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F-2

Setting Negative-Sequence Overcurrent Elements

Date Code 20011205

SEL-311B Instruction Manual

Figure F.1: Minimum Response Time Added to a Negative-Sequence Time-Overcurrent

Element 51QT

O

THER

N

EGATIVE

-S

EQUENCE

O

VERCURRENT

E

LEMENT

R

EFERENCES

A. F. Elneweihi, E. O. Schweitzer, M. W. Feltis, “Negative-Sequence Overcurrent Element
Application and Coordination in Distribution Protection,” IEEE Transactions on Power Delivery,
Volume 8, Number 3, July 1993, pp. 915–924.

This IEEE paper is the source of the coordination guidelines and example given in this
appendix. The paper also contains analyses of system unbalances and faults and the
negative-sequence current generated by such conditions.

A. F. Elneweihi, “Useful Applications for Negative-Sequence Overcurrent Relaying,” 22nd
Annual Western Protective Relay Conference, Spokane, Washington, October 24–26, 1995.

This conference paper gives many good application examples for negative-sequence
overcurrent elements. The focus is on the transmission system, where negative-sequence
overcurrent elements provide better sensitivity than zero-sequence overcurrent elements in
detecting some single-line-to-ground faults.

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Summary of Contents for SEL-311B

Page 1: ...SEL 311B PROTECTION AND AUTOMATION SYSTEM INSTRUCTION MANUAL SCHWEITZER ENGINEERING LABORATORIES 2350 NE HOPKINS COURT PULLMAN WA USA 99163 5603 TEL 509 332 1890 FAX 509 332 7990 ...

Page 2: ... mots de passe confidentiels Dans le cas contraire un accès non autorisé à l équipement pourrait être possible SEL décline toute responsabilité pour tout dommage résultant de cet accès non autorisé DANGER Removal of this front panel exposes circuitry which may cause electrical shock that can result in injury or death DANGER Le retrait du panneau avant expose à la circuiterie qui pourrait être la s...

Page 3: ...mary of Revisions table 20011205 Reissued entire manual to reflect the following changes Updated Section 2 and Section 3 figure references throughout the manual Section 1 Added 220 V control input voltage specification to General Specifications Updated Terminal Connections information in General Specifications Section 2 Added Connectorized rear panel drawings Section 3 Added Ground and Phase Dista...

Page 4: ...nce Element Resistive Reach Test Using Three Voltage Sources and One Current Source section Section 14 Updated SELOGIC Equivalent to SEL 221F Relay Word Bits table Updated SELOGIC Equivalent to SEL 221F 3 Relay Word Bits table Appendix A Updated firmware Appendix D Updated A5C0 Relay Definition Block section Updated information in ID Message and DNA Message sections Appendix H Updated SEL 311B Wye...

Page 5: ...Output Contacts information Section 2 Updated Relay Dimensions drawing Added Product Safety Compliance paragraph Added Danger statement to Accessing the Relay Circuit Boards subsection Added Caution statement to the Clock Battery subsection Section 5 Corrected Zone LED subsection Section 8 Removed reference to NDEM and NDEMP in the Demand Meter Settings subsection Section 9 Settings Sheets Updated...

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Page 7: ...G THE RELAY SECTION 10 SERIAL PORT COMMUNICATIONS AND COMMANDS SECTION 11 FRONT PANEL INTERFACE SECTION 12 STANDARD EVENT REPORTS AND SER SECTION 13 TESTING AND TROUBLESHOOTING SECTION 14 APPLICATION SETTINGS FOR SEL 221 SERIES RELAYS SECTION 15 APPENDICES Appendix A Firmware Versions Appendix B Firmware Upgrade Instructions Appendix C SEL Distributed Port Switch Protocol Appendix D Configuration ...

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Page 9: ...nnections 1 6 Relay Specifications 1 8 General Specifications 1 8 Processing Specifications 1 10 Relay Element Settings Ranges and Accuracies 1 11 FIGURES Figure 1 1 SEL 311B Relay Transmission Line Protection with MIRRORED BITS Reclosing and Synch Check 1 4 Figure 1 2 SEL 311B Relay Inputs Outputs and Communications Ports 1 5 Figure 1 3 SEL 311B Relay Communications Connections Examples 1 6 Figur...

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Page 11: ...ruction manual Section 2 Installation describes mounting and wiring the SEL 311B Relay application connections and the operation of circuit board jumpers Figure 2 2 through Figure 2 4 show the SEL 311B Relay front and rear panels Section 3 Distance Overcurrent Voltage and Synchronism Check Elements describes the operation of Phase and ground distance elements phase mho ground mho and Zone 1 extens...

Page 12: ...se initiation via serial port or optoisolated inputs Section 7 Inputs Outputs Timers and Other Control Logic describes the operation of Optoisolated inputs IN101 through IN106 Local control switches local bit outputs LB1 through LB16 Remote control switches remote bit outputs RB1 through RB16 Latch control switches latch bit outputs LT1 through LT16 Multiple setting groups six available Programmab...

Page 13: ...el Interface describes the front panel operation of Pushbuttons and correspondence to serial port commands Local control switches local bit outputs LB1 through LB16 Rotating default displays and display points Section 12 Standard Event Reports and SER describes Standard 15 30 60 and 180 cycle event reports Event summaries Sequential events recorder SER report Section 13 Testing and Troubleshooting...

Page 14: ... 311B Unsolicited SER Protocol SEL 311B Relay Command Summary briefly describes the serial port commands that are described in detail in Section 10 Serial Port Communications and Commands APPLICATIONS SEL 311B SEL 311B MIRRORED BITS M311B001a SEL 311B Compensator Distance Application Figure 1 1 SEL 311B Relay Transmission Line Protection with MIRRORED BITS Reclosing and Synch Check AC DC CONNECTIO...

Page 15: ...221 Relays use the numeric terminal labels Section 14 describes how to easily set the SEL 311B to emulate the popular SEL 221 relays For installation in systems with drawings designed for SEL 311B Relays use the alphanumeric terminal labels See Figure 2 2 through Figure 2 4 for rear panel drawings Figure 1 2 SEL 311B Relay Inputs Outputs and Communications Ports ...

Page 16: ... 311B Instruction Manual COMMUNICATIONS CONNECTIONS See Port Connector and Communications Cables in Section 10 Serial Port Communications and Commands for more communications connection information Figure 1 3 SEL 311B Relay Communications Connections Examples ...

Page 17: ...EL 311B Instruction Manual SEL 2800 SEL 2800 IN101 Relay SEL 311B Relay SEL 2800 SEL 2800 SEL 2505 Transformer Alarms SEL 2800 M311B004 SEL 311B Relay SEL 2100 Protection Logic Processor Figure 1 4 SEL 311B Relay Communications Connections Examples Continued ...

Page 18: ... recommended Minimum temperature rating of 105 C AC Current Inputs 5 A nominal 15 A continuous linear to 100 A symmetrical 500 A for 1 second 1250 A for 1 cycle Burden 0 27 VA 5 A 2 51 VA 15 A 1 A nominal 3 A continuous linear to 20 A symmetrical 100 A for 1 second 250 A for 1 cycle Burden 0 13 VA 1 A 1 31 VA 3 A AC Voltage Inputs 67 VL N three phase four wire connection 150 VL N continuous connec...

Page 19: ...ely 5 mA of current 110 Vdc inputs draw approximately 8 mA of current All current ratings are at nominal input voltages Note 220 Vdc optoisolated inputs are not available in the Connectorized version of the relay Routine Dielectric Test Voltage Current inputs 2500 Vac for 10 s Power supply optoisolated inputs and output contacts 3000 Vdc for 10 s The following IEC 60255 5 Dielectric Tests 1977 are...

Page 20: ...e Environmental Cold IEC 60068 2 1 1990 Test Ad 16 hr 40 Dry Heat IEC 60068 2 2 1974 Test Bd 16 hr 85 Damp Heat Cyclic IEC 60068 2 30 1980 Test Db 55 C 6 cycles 95 humidity Object Penetration IEC 60529 1989 IP30 IP54 Vibration IEC 60255 21 1 1988 Class 1 IEC 60255 21 2 1988 Class 1 IEC 60255 21 3 1993 Class 2 Safety Impulse IEC 60255 5 1977 0 5 J 5000 V Certifications ISO Relay is designed and man...

Page 21: ...ho Phase Distance Elements Zones 1 3 Impedance Reach Setting Range OFF 0 05 to 64 Ω sec 0 01 Ω steps 5 A nominal OFF 0 25 to 320 Ω sec 0 01 Ω steps 1 A nominal Minimum sensitivity is controlled by the pickup of the supervising phase to phase overcurrent elements for each zone Accuracy 5 of setting at line angle for 30 SIR 60 3 of setting at line angle for SIR 30 Transient Overreach 5 of setting pl...

Page 22: ...See pickup and reset time curves in Figure 3 14 and Figure 3 15 Instantaneous Definite Time Overcurrent Elements Pickup Range OFF 0 25 100 00 A 0 01 A steps 5 A nominal OFF 0 05 20 00 A 0 01 A steps 1 A nominal Steady State Pickup Accuracy 0 05 A and 3 of setting 5 A nominal 0 01 A and 3 of setting 1 A nominal Transient Overreach 5 of pickup Time Delay 0 00 16 000 00 cycles 0 25 cycle steps Timer ...

Page 23: ...V 0 01 V steps phase elements OFF 0 00 260 00 V 0 01 V steps phase to phase elements Steady State Pickup Accuracy 1 V and 5 of setting Transient Overreach 5 of pickup Synchronism Check Elements Slip Frequency Pickup Range 0 005 0 500 Hz 0 001 Hz steps Slip Frequency Pickup Accuracy 0 003 Hz Phase Angle Range 0 80 1 steps Phase Angle Accuracy 4 ...

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Page 25: ...d Corresponding Output Contacts 2 13 Table 2 3 Move Jumper JMP23 to Select Extra Alarm 2 14 Table 2 4 Password and Breaker Jumper Operation 2 15 Table 2 5 EIA 232 Serial Port Voltage Jumper Positions for Standard Relay Shipments 2 15 FIGURES Figure 2 1 SEL 311B Relay Dimensions and Panel Mount Cutout 2 1 Figure 2 2 SEL 311B Relay Front and Rear Panel Drawings Models 0311B00H2 Rack and 0311B0032 Pa...

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Page 27: ...Date Code 20011205 Installation 2 1 SEL 311B Instruction Manual SECTION 2 INSTALLATION RELAY MOUNTING Figure 2 1 SEL 311B Relay Dimensions and Panel Mount Cutout ...

Page 28: ...2 2 Installation Date Code 20011205 SEL 311B Instruction Manual FRONT AND REAR PANEL DIAGRAMS Figure 2 2 SEL 311B Relay Front and Rear Panel Drawings Models 0311B00H2 Rack and 0311B0032 Panel ...

Page 29: ...Date Code 20011205 Installation 2 3 SEL 311B Instruction Manual Figure 2 3 SEL 311B Relay Front and Rear Panel Drawings Model 0311B0041 ...

Page 30: ...2 4 Installation Date Code 20011205 SEL 311B Instruction Manual Figure 2 4 SEL 311B Relay Connectorized Rear Panel Drawing ...

Page 31: ...ol power circuitry is isolated from the relay chassis ground Refer to Section 1 Introduction and Specifications for power supply ratings The relay power supply rating is listed on the serial number sticker on the relay rear panel Output Contacts The contact outputs in the SEL 311B Relay are not polarity dependant Refer to General Specifications in Section 1 Introduction and Specifications for cont...

Page 32: ... Table 10 1 also see following discussion on IRIG B time code input The pin definitions for all the ports are given on the relay rear panel and are detailed in Table 10 1 through Table 10 3 in Section 10 Serial Port Communications and Commands Refer to Table 2 1 for a list of cables available from SEL for various communication applications Refer to Section 10 Serial Port Communications and Command...

Page 33: ...232 ports SEL 2100 C272A 2 SEL 2100 with IRIG C273A 2 3 SEL 2505 SEL 2800 A corresponding main board jumper must be installed to power the Telenetics Modem with 5 Vdc 0 5 A limit from the SEL 311B Relay See Figure 2 8 and Table 2 5 IRIG B Time Code Input The SEL 311B Relay accepts a demodulated IRIG B time signal to synchronize the relay internal clock with some external source A demodulated IRIG ...

Page 34: ... Voltage Channel VS is used in voltage and synchronism check elements and voltage metering 2 Current Channel IP does not need to be connected Channel IP provides current for current polarized directional elements Figure 2 5 SEL 311B Relay Provides Distance and Overcurrent Protection Reclosing and Synch Check for a Transmission Line ...

Page 35: ...ge and synchronism check elements and voltage metering 2 In this example current Channel IP provides current polarization for a directional element used to control ground elements Figure 2 6 SEL 311B Relay Provides Distance and Overcurrent Protection and Reclosing for a Transmission Line Current Polarization Source Connected to Channel IP ...

Page 36: ...truction Manual Figure 2 7 SEL 311B Line Protection Through a Delta Wye Transformer Using Compensator Distance Elements 1 Use compensator distance elements for line protection through a delta wye transformer 2 Voltage VS does not need to be connected ...

Page 37: ... of this front panel exposes circuitry which may cause electrical shock that can result in injury or death 4 Disconnect circuit board cables as necessary to allow the main board and drawout tray to be removed Ribbon cables can be removed by pushing the extraction ears away from the connector The 6 conductor power cable can be removed by grasping the power connector wires and pulling away from the ...

Page 38: ...2 12 Installation Date Code 20011205 SEL 311B Instruction Manual Figure 2 8 Jumper Connector and Major Component Locations on the SEL 311B Relay Main Board ...

Page 39: ...ntacts are all a type output contacts This is how these jumpers are configured in a standard relay shipment Refer to Figure 7 26 for examples of output contact operation for different output contact types Table 2 2 Output Contact Jumpers and Corresponding Output Contacts Output Contact Jumpers Corresponding Output Contacts Reference Figures JMP21 JMP29 but not JMP23 ALARM OUT101 Figure 2 8 Extra A...

Page 40: ...contact is operating as an extra alarm driven by the same signal that operates the dedicated ALARM output contact it will be in the opposite state of the dedicated ALARM output contact in a standard relay shipment In a standard relay shipment the dedicated ALARM output contact comes as a b type output contact and all the other output contacts including the extra alarm come as a type output contact...

Page 41: ...ircuit breaker control or testing purposes see Section 10 Serial Port Communications and Commands Note that JMP6 in Figure 2 8 has multiple jumpers A through D Jumpers A and B are used see Table 2 4 Since jumpers C and D are not used the positions ON or OFF of jumpers C and D are of no consequence EIA 232 Serial Port Voltage Jumpers The jumpers listed in Table 2 5 connect or disconnect 5 Vdc to Pi...

Page 42: ... Vac no BR2335 or equivalent recommended by manufacturer Dispose of used batteries according to the manufacturer s instructions If external power is lost or disconnected the battery powers the clock When the relay is powered from an external source the battery only experiences a low self discharge rate Thus battery life can extend well beyond the nominal 10 years because the battery rarely has to ...

Page 43: ...ive Sequence Time Overcurrent Element 3 30 Voltage Elements 3 31 Voltage Values 3 31 Voltage Element Settings 3 32 Voltage Element Operation 3 35 Synchronism Check Elements 3 36 Fixed Angle Synchronism Check 3 36 Dynamic Synchronism Check 3 36 Synchronism Check Elements Settings 3 37 Synchronism Check Elements Voltage Inputs 3 40 Synchronism Check Elements Operation 3 40 Synchronism Check Applicat...

Page 44: ...ay Nondirectional Instantaneous Overcurrent Element Pickup Time Curve 3 20 Figure 3 15 SEL 311B Relay Nondirectional Instantaneous Overcurrent Element Reset Time Curve 3 21 Figure 3 16 Levels 1 Through 3 Residual Ground Instantaneous Definite Time Overcurrent Elements with Directional and Torque Control 3 22 Figure 3 17 Levels 1 Through 3 Negative Sequence Instantaneous Definite Time Overcurrent E...

Page 45: ...ge and a polarizing reference voltage using the following concepts Sampled currents and voltages are represented in the relay as vectors by using the most recent sample as the real vector component and the sample taken one quarter cycle earlier as the imaginary vector component See Figures 12 3 and 12 4 in Chapter 12 Standard Event Reports and SER for a description of this process If vector V1 V1 ...

Page 46: ... torque calculation Positive torque restrains negative torque operates Z Replica line impedance at operating or balance point As mentioned previously a digital relay mho element tests the angle between a line drop compensated voltage and a polarizing reference voltage Figure 3 1 through Figure 3 3 show the operating voltages inside positive sequence polarized mho elements and compensator distance ...

Page 47: ...estrain cos q 0 Z I V I Zsource Test Angle cos q 0 Balance cos 90 0 I X I R Vmem Z I V Z I V I Zsource Test Angle cos q 0 Operate cos q 0 I X I R Vmem Z I V Z I V I Zsource Test Angle cos q 0 Forward External Fault Forward Fault at the Balance Point Forward Internal Fault M311B034 Figure 3 1 Positive Sequence Polarized Mho Element ...

Page 48: ...q 0 VB VAB Z IAB V BC Z I BC Fault Near Balance Point VA VC VB VAB Z IAB V BC Z I BC Forward External Fault VA VC VB VAB Z IAB V BC Z I BC Internal Fault VA VC Test Angle q 180 sin q 0 Test Angle q 180 sin q 0 Note VA VB and VC are internal element voltages not system voltages Test Angle q 180 sin q 0 M311B035 Figure 3 2 Compensator Distance Phase to Phase Element Operation ...

Page 49: ...sequence polarized and compensator distance mho elements each have different operating advantages in different protection environments but work equally well in the majority of transmission line applications Consider using compensator distance elements when A different phase distance operating principle is desired for backup relaying Protecting a transmission line through a delta wye transformer Th...

Page 50: ...ones in the E21P setting e g 3C is three zones of compensator distance relaying If EADV N and compensator distance elements are selected E21MG is set to N and hidden If EADV Y setting E21MG is visible and the user may apply ground distance relaying along with compensator distance phase relaying Mho Phase Distance Elements Zones 1 3 Enable Setting E21P 1 3 1C 3C Setting range for Mho Phase Distance...

Page 51: ...AB Z1P X1 CVTBL VPOLV ILOP FSB FSA Relay Word Bits unless noted 32QF F32P Internal Element MABC1 Zone 1 Compensator Distance Logic Note 2 ABC1 and PP1 are compensator distance element calculations Zone 1 extension if active is included in this calculation IAB 50PP1 Setting C in E21P Setting VPOLV ILOP IBC ICA See Note 2 ABC1 0 Calc See Note 2 PP1 0 Calc MPP1 CVTBL C in E21P Setting _ _ _ M1P MBC1 ...

Page 52: ...P Zone 2 Distance Setting VPOLV ILOP FSB FSA F32P Internal Element M311B049a 32QF F32P Internal Element MABC2 Zone 2 Compensator Distance Logic Note 2 ABC2 and PP2 are compensator distance element calculations IAB 50PP2 Setting C in E21P Setting VPOLV ILOP IBC ICA See Note 2 ABC2 0 Calc See Note 2 PP2 0 Calc MPP2 _ _ _ C in E21P Setting MABC2 MPP2 Relay Word Bits Relay Word Bits Relay Word Bits un...

Page 53: ...ernal Element R32P Internal Element See Note 1 M311B050a 32QF R32P Internal Element MABC3 Zone 3 Compensator Distance Logic Note 2 ABC3 and PP3 are compensator distance element calculations IAB 50PP3 Advanced Setting C in E21P Setting VPOLV ILOP IBC ICA See Note 2 ABC3 0 Calc See Note 2 PP3 0 Calc MPP3 _ _ _ MBC3 MCA3 MPP3 MABC3 C in E21P Setting F32P Internal Element DIR3 F Setting 32QR DIR3 F Se...

Page 54: ...0 Transient Overreach 5 of setting plus steady state accuracy Phase and Residual Current Fault Detectors Zones 1 3 Setting Range for Phase and Residual Current Fault Detectors 50L1 through 50L3 and 50GZ1 through 50GZ3 Note If EADVS N levels 2 and 3 fault detectors are set at their minimum values and are hidden 0 50 100 00 A secondary 0 01 A steps 5 A nominal 0 10 20 00 A secondary 0 01 A steps 1 A...

Page 55: ...L 3PO ILOP VPOLV Zone 1 A Phase Mho Ground Distance Logic B and C Phase Are Similar Note 1 mAG A Phase to Ground Distance Calculation Z1MG Zone 1 Distance Setting X1 Zone 1 Extension MAG1 MBG1 MCG1 Z1G Relay Word Bit Relay Word Bits unless noted Relay Word Bits 5 4 2 1 3 From Figure 4 12 From Figure 4 1 From Figure 4 2 From Figure 3 11 From Figure 5 3 Figure 3 7 Zone 1 Mho Ground Distance Logic ...

Page 56: ... See Note 1 mAG Z2MG M311B038a FSA 3PO ILOP VPOLV Zone 2 A Phase Mho Ground Distance Logic B and C Phase Are Similar Note 1 mAG A Phase to Ground Distance Calculation Z2MG Zone 2 Distance Setting MAG2 MBG2 MCG2 Z2G Relay Word Bits Relay Word Bits unless noted Relay Word Bit 2 1 3 From Figure 4 12 From Figure 4 1 From Figure 5 3 Figure 3 8 Zone 2 Mho Ground Distance Logic ...

Page 57: ...lay Word Bit 2 1 3 1 From Figure 4 12 From Figure 4 1 From Figure 5 3 Figure 3 9 Zone 3 Mho Ground Distance Logic Distance Element Operating Time Curves at Nominal Frequency Figure 3 10 shows operating times for the SEL 311B Relay distance elements The diagrams show operating times at each test point Operating times include output contact closure time For the distance element test a fault was appl...

Page 58: ...SIR 1 0 SIR 10 0 SIR 30 0 M311B056 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 2 25 0 10 20 30 40 50 60 70 80 90 Fault Location in Percent of Set Reach Operating Time in Cycles SEL 311B Mho Ground Operating Times Single Line to Ground Faults SIR 0 1 SIR 1 0 SIR 10 0 SIR 30 0 0 0 25 0 5 0 75 1 1 25 1 5 1 75 2 0 10 20 30 40 50 60 70 80 90 Fault Location in Percent of Set Reach Trip Time in Cycles SEL 311B Pha...

Page 59: ...s Distance elements BG CG AB and CA are blocked Zone 1 Extension See Figure 3 11 When enabled this logic modifies the reach of all Zone 1 distance elements by multiplier setting Z1EXTM once all three poles are closed for Z1EXTD time All Zone 1 reaches retreat to their set reach when 3PO asserts The Zone 1 reaches cannot be extended if any of the following elements are asserted M1P M2P Z1G Z2G 51G ...

Page 60: ...se and ground distance elements drive separate timers for each zone For the common mode the phase and ground distance elements both drive a common timer Common Timer Settings Z1D through Z3D Independent Phase Timer Settings Z1PD through Z3PD Independent Ground Timer Settings Z1GD through Z3GD Pickup Ranges OFF 0 00 16 000 00 cycles 0 25 cycle steps Pickup and dropout accuracy for all timers 0 25 c...

Page 61: ...T Z3G Zone 3 Delay Timer Logic M3PT Z3GT SUSPEND TIMING Z2T Z2G Zone 2 Delay Timer Logic M2PT Z2GT M311B041a M1P M3P M2P Z2D 0 Z2PD 0 Z2GD 0 Z3D 0 Z3PD 0 Z3GD 0 5 4 2 1 3 6 From Figure 3 4 From Figure 3 8 From Figure 3 7 From Figure 3 6 From Figure 3 5 From Figure 3 9 Figure 3 12 Zone Timing Elements INSTANTANEOUS DEFINITE TIME OVERCURRENT ELEMENTS Phase Instantaneous Definite Time Overcurrent Ele...

Page 62: ... and 3 of setting 1 A nominal phase current inputs IA IB IC Timer 0 25 cycles and 0 1 of setting Transient Overreach 5 of setting Pickup Operation See the phase instantaneous definite time overcurrent element logic in Figure 3 13 The pickup settings for each level 50P1P through 50P3P are compared to the magnitudes of the individual phase currents IA IB and IC The logic outputs in Figure 3 13 are R...

Page 63: ... Control Levels 1 through 3 in Figure 3 13 have corresponding SELOGIC control equation torque control settings 67P1TC through 67P3TC SELOGIC control equation torque control settings cannot be set directly to logical 0 The following are torque control setting examples for Level 1 phase instantaneous definite time overcurrent elements 67P1 67P1T 67P1TC 1 Setting 67P1TC set to logical 1 Then 67P1 67P...

Page 64: ...ckup and Reset Time Curves Figure 3 14 and Figure 3 15 show pickup and reset time curves applicable to all nondirectional instantaneous overcurrent elements in the SEL 311B Relay 60 Hz or 50 Hz relays These times do not include output contact operating time and thus are accurate for determining element operation time for use in internal SELOGIC control equations Output contact pickup dropout time ...

Page 65: ...own in Figure 3 16 All residual ground instantaneous definite time overcurrent elements are available for use in any user defined tripping or control scheme To understand the operation of Figure 3 16 follow the explanation given for Figure 3 13 in the preceding Phase Instantaneous Definite Time Overcurrent Elements subsection substituting residual ground current IG IG 3I0 IA IB IC for phase curren...

Page 66: ...g Level 1 E50G 1 Setting 32GF 32GF Enabled Levels Relay Word Bits Relay Word Bits unless noted 1 1 1 1 From Figure 4 12 Figure 3 16 Levels 1 Through 3 Residual Ground Instantaneous Definite Time Overcurrent Elements with Directional and Torque Control Settings Ranges Setting range for pickup settings 50G1P through 50G3P OFF 0 25 100 00 A secondary 5 A nominal phase current inputs IA IB IC OFF 0 05...

Page 67: ...ing negative sequence current 3I2 3I2 IA a2 IB a IC ABC rotation 3I2 IA a2 IC a IB ACB rotation where a 1 Ð 120 and a2 1 Ð 120 for phase currents and substituting like settings and Relay Word bits In Figure 3 17 Levels 1 and 2 67Qn elements have directional controls fixed forward Level 3 has selectable forward and reverse directional controls See Figure 4 14 in Section 4 Loss of Potential CCVT Tra...

Page 68: ...1 Setting Relay Word Bits unless noted 32QF 32QF 32QR Enabled Levels 1 1 1 1 From Figure 4 12 Figure 3 17 Levels 1 Through 3 Negative Sequence Instantaneous Definite Time Overcurrent Elements with Directional and Torque Control TIME OVERCURRENT ELEMENTS Phase Time Overcurrent Elements One phase time overcurrent element is available The element is enabled with the E51P enable setting as follows Tab...

Page 69: ...C curve type U1 U5 US curves see Figure 9 1 Figure 9 10 C1 C5 IEC curves 51PTD time dial 0 50 15 00 US curves see Figure 9 1 Figure 9 10 0 05 1 00 IEC curves 51PRS electromechanical reset timing Y Enable electromechanical reset timing N 1 cycle reset delay 51PTC SELOGIC control equation torque control setting Relay Word bits referenced in Tables 9 3 and 9 4 or set directly to logical 1 see note be...

Page 70: ...ent element is timed out on its curve Tripping and other control applications See Trip Logic in Section 5 Trip and Target Logic 51PR Phase time overcurrent element is fully reset Element reset testing or other control applications 51PT Element Torque Control Switch Operation Torque Control Switch Closed The pickup comparator in Figure 3 18 compares the pickup setting 51PP to the maximum phase curr...

Page 71: ...g to logical 0 IABC also effectively appears as a magnitude of zero 0 to the curve timing reset timing functions resulting in Relay Word bit 51PT also deasserting to logical 0 The phase time overcurrent element then starts to time to reset Relay Word bit 51PR asserts to logical 1 when the phase time overcurrent element is fully reset Torque Control Refer to Figure 3 18 SELOGIC control equation tor...

Page 72: ...omechanical reset timing setting 51PRS Y the phase time overcurrent element reset timing emulates electromechanical reset timing If maximum phase current IABC goes above pickup setting 51PP element is timing or already timed out and then current IABC goes below 51PP the element starts to time to reset emulating electromechanical reset timing Relay Word bit 51PR resetting indication logical 1 when ...

Page 73: ...s IA IB IC 51GC curve type U1 U5 US curves see Figure 9 1 Figure 9 10 C1 C5 IEC curves 51GTD time dial 0 50 15 00 US curves see Figure 9 1 Figure 9 10 0 05 1 00 IEC curves 51GRS electromechanical reset timing Y Enable electromechanical reset timing N 1 cycle reset delay 51GTC SELOGIC control equation torque control setting Relay Word bits referenced in Tables 9 3 and 9 4 or set directly to logical...

Page 74: ...0 multiples of pickup Negative Sequence Time Overcurrent Element To understand the operation of Figure 3 20 follow the explanation given for Figure 3 18 in the preceding Phase Time Overcurrent Elements subsection substituting negative sequence current 3I2 3I2 IA a2 IB a IC ABC rotation 3I2 IA a2 IC a IB ACB rotation where a 1 Ð 120 and a2 1 Ð 120 for maximum phase current IABC and like settings an...

Page 75: ...1 cycle reset delay 51QTC SELOGIC control equation torque control setting Relay Word bits referenced in Tables 9 3 and 9 4 or set directly to logical 1 see note below Note SELOGIC control equation torque control settings e g 51QTC cannot be set directly to logical 0 See Section 9 Setting the Relay for additional time overcurrent element setting information Accuracy Pickup 0 05 A secondary and 3 of...

Page 76: ...ng subsection Synchronism Check Elements Voltage VS is also used in the three voltage elements described at the end of Table 3 8 and in Figure 3 23 These voltage elements are independent of the synchronism check elements even though voltage VS is used in both Voltage Element Settings Table 3 8 lists available voltage elements and the corresponding voltage inputs and settings ranges for the SEL 311...

Page 77: ...on Manual Voltage Element Relay Word bits Operating Voltage Pickup Setting Range See Figure 27S VS 27SP 0 00 150 00 V secondary 59S VS 59SP 0 00 150 00 V secondary Figure 3 23 Accuracy Pickup 1 V and 5 of setting Transient Overreach 5 of setting Figure 3 21 Single Phase and Three Phase Voltage Elements ...

Page 78: ...3 34 Distance Overcurrent Voltage Date Code 20011205 and Synchronism Check Elements SEL 311B Instruction Manual Figure 3 22 Phase to Phase Elements Figure 3 23 Channel VS Voltage Elements ...

Page 79: ...ickup setting 27P 27B 1 logical 1 if VB pickup setting 27P 0 logical 0 if VB pickup setting 27P 27C 1 logical 1 if VC pickup setting 27P 0 logical 0 if VC pickup setting 27P 3P27 1 logical 1 if all three Relay Word bits 27A 27B and 27C are asserted 27A 1 27B 1 and 27C 1 0 logical 0 if at least one of the Relay Word bits 27A 27B or 27C is deasserted e g 27A 0 Overvoltage Element Operation Example R...

Page 80: ... slip frequency exercise caution if synchronism check elements 25A1 or 25A2 are used to close a circuit breaker A high slip frequency and a slow breaker close could result in closing the breaker outside the synchronism check window Qualify the breaker close command with a time delay such as SV1 25A1 CL CC SV1T Set SV1PU with enough pickup delay to insure that the slip frequency is low enough for t...

Page 81: ...althy voltage window 0 00 150 00 V secondary 25SF maximum slip frequency 0 005 0 500 Hz 25ANG1 synchronism check element 25A1 maximum angle 0 80 25ANG2 synchronism check element 25A2 maximum angle 0 80 SYNCP synchronizing phase VA VB VC VAB VBC or VCA TCLOSD breaker close time for angle compensation OFF 1 00 60 00 cycles BSYNCH SELOGIC control equation that blocks synchronism check Relay Word bits...

Page 82: ...e Overcurrent Voltage Date Code 20011205 and Synchronism Check Elements SEL 311B Instruction Manual See bottom of Figure 3 25 To Figure 3 25 Figure 3 24 Synchronism Check Voltage Window and Slip Frequency Elements ...

Page 83: ...Date Code 20011205 Distance Overcurrent Voltage 3 39 and Synchronism Check Elements SEL 311B Instruction Manual From Figure 3 24 See Figure 6 2 Figure 3 25 Synchronism Check Elements ...

Page 84: ...e compared to a voltage window to verify that the voltages are healthy and lie within settable voltage limits 25VLO and 25VHI If both voltages are within the voltage window the following Relay Word bits assert 59VP indicates that voltage VP is within voltage window setting limits 25VLO and 25VHI 59VS indicates that voltage VS is within voltage window setting limits 25VLO and 25VHI As discussed pre...

Page 85: ...VS and VA are healthy 59VP 59VS and 59VA asserted to logical 1 and the SELOGIC control equation setting BSYNCH Block Synchronism Check is deasserted logical 0 The Slip Frequency Calculator output is Slip Frequency fP fS in units of Hz slip cycles second fP frequency of voltage VP in units of Hz cycles second determined from VA fS frequency of voltage VS in units of Hz cycles second A complete slip...

Page 86: ... frequency setting 25SF Relay Word bit SF is asserted Voltages VP and VS are Static Refer to top of Figure 3 25 If the slip frequency is less than or equal to 0 005 Hz or TCLOSD OFF the Angle Difference Calculator does not take into account breaker close time it presumes voltages VP and VS are static not slipping with respect to one another This would usually be the case for an open breaker with v...

Page 87: ...oaching VP Angle Difference angle compensation for breaker close time TCLOSD setting 25ANG1 or 25ANG2 setting 25ANG1 or 25ANG2 Angle Difference angle compensation for breaker close time TCLOSD setting 25ANG1 or 25ANG2 setting 25ANG1 or 25ANG2 DWG M35177 VP VS VS VS VP VS Figure 3 26 Angle Difference Between VP and VS Compensated by Breaker Close Time fP fS and VP Shown as Reference in This Example...

Page 88: ... cycles 1 second 60 cycles 0 167 second Resulting in Angle Difference ÐVP ÐVS fP fS TCLOSD 1 second 60 cycles 360 slip cycle ÐVP ÐVS 0 10 0 167 360 ÐVP ÐVS 6 During the breaker close time TCLOSD the voltage angle difference between voltages VP and VS changes by 6 degrees This 6 degree angle compensation is applied to voltage VS resulting in derived voltage VS as shown in Figure 3 26 Note The angle...

Page 89: ... 0 degrees but has now moved past VP If the Angle Difference is increasing but the Angle Difference is still less than maximum angle settings 25ANG1 or 25ANG2 then corresponding synchronism check elements 25A1 or 25A2 assert to logical 1 In this scenario of the Angle Difference increasing but still being less than maximum angle settings 25ANG1 or 25ANG2 the operation of corresponding synchronism c...

Page 90: ...or example if SELOGIC control equation setting 79CLS Reclose Supervision is set as follows 79CLS 25A1 and the angle difference is less than angle setting 25ANG1 at that instant setting 79CLS asserts to logical 1 for 1 4 cycle allowing the sealed in open interval time out to propagate on to the close logic in Figure 6 1 in Section 6 Close and Reclose Logic Element 25A2 operates similarly Synchronis...

Page 91: ... Control for Phase Distance and Negative Sequence Elements 4 19 Internal Enables 4 19 Directional Elements 4 20 Directional Element Routing 4 20 Directional Control Settings 4 22 Settings Made Automatically 4 22 Settings 4 23 E32IV SELOGIC Control Equation Enable 4 28 Overcurrent Directional Control Provided by Torque Control Settings 4 29 TABLES Table 4 1 Elements Controlled by Zone Level Directi...

Page 92: ...ure 4 10 Zero Sequence Voltage Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements 4 16 Figure 4 11 Channel IP Current Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements 4 17 Figure 4 12 Ground Distance and Residual Ground Directional Logic 4 18 Figure 4 13 General Logic Flow of Directional Control for Negative Sequence...

Page 93: ...4 1 From Figure 5 3 To Figure 3 4 through Figure 3 9 To Figure 4 12 Figure 4 9 through Figure 4 11 Figure 4 14 and Figure 4 15 Figure 4 1 Loss of Potential Logic Inputs into the LOP logic are 3PO three pole open condition indicates circuit breaker open condition see Figure 5 3 V1 positive sequence voltage V secondary I1 positive sequence current A secondary V0 zero sequence voltage V secondary I0 ...

Page 94: ...t breaker is open Set SV1PU longer than the reclose open time interval In this expression if any phase voltage is less than setting 59P while the circuit breaker is open or LOP is asserted the expression is true logical 1 If the output is asserted check the relay input potentials before closing the circuit breaker In a system using line side potential transformers remove SV1T from the expression T...

Page 95: ...ient blocking is enabled setting ECCVT Y and the relay detects a high SIR during a Zone 1 fault the relay delays tripping for up to 1 5 cycles allowing the CCVT to stabilize User settings are not required The relay automatically adapts to different system SIR conditions by monitoring voltage and current For close in faults on systems with high SIRs the SEL 311B Relay uses distance calculation smoo...

Page 96: ...C The load encroachment logic see Figure 4 3 and settings are enabled disabled with setting ELOAD Y or N The load encroachment feature allows distance and phase overcurrent elements to be set independent of load levels Relay Word bit ZLOAD is used to block the positive sequence voltage polarized directional element see Figure 4 15 which may assert for three phase load The distance elements M1P thr...

Page 97: ...ent logic in Figure 4 3 Load is largely a balanced condition so apparent positive sequence impedance is a good load measure The load encroachment logic only operates if the positive sequence current I1 is greater than the Positive Sequence Threshold shown in Figure 4 3 For a balanced load condition I1 phase current magnitude Forward load load flowing out lies within the hatched region labeled ZLOU...

Page 98: ...aximum Positive Load Angle Forward 90 to 90 NLAF Maximum Negative Load Angle Forward 90 to 90 PLAR Maximum Positive Load Angle Reverse 90 to 270 NLAR Maximum Negative Load Angle Reverse 90 to 270 Load Encroachment Setting Example Example system conditions Nominal Line Line Voltage 230 kV Maximum Forward Load 800 MVA Maximum Reverse Load 500 MVA Power Factor Forward Load 0 90 lag to 0 95 lead Power...

Page 99: ...To provide a margin for setting ZLF multiply by a factor of 0 9 ZLF 13 2 W secondary 0 9 11 90 W secondary For the maximum reverse load 230 2 400 500 2000 21 1 W secondary Again to provide a margin for setting ZLR ZLR 21 1 W secondary 0 9 19 00 W secondary Convert Power Factors to Equivalent Load Angles The power factor forward load can vary from 0 90 lag to 0 95 lead Setting PLAF cos 1 0 90 26 Se...

Page 100: ...nd Synchronism Check Elements To prevent phase time overcurrent element 51PT from operating for high load conditions make the following SELOGIC control equation torque control setting 51PTC ZLOAD For a load condition ZLOAD logical 1 phase time overcurrent element 51PT cannot operate with this torque control setting regardless of the phase current level 51PTC logical 1 NOT logical 1 logical 0 For a...

Page 101: ...al elements are available to control the ground distance and residual ground overcurrent elements These three directional elements are Negative sequence voltage polarized directional element Zero sequence voltage polarized directional element Channel IP current polarized directional element Figure 4 6 Figure 4 10 Figure 4 7 Figure 4 11 Figure 4 8 Figure 4 12 Figure 4 9 Figure 4 5 General Logic Flo...

Page 102: ...ment 32IE Channel IP current polarized directional element Note that Figure 4 6 has extra directional element enable 32QE which is used in the logic that controls phase distance elements see Figure 4 14 The settings involved with 32QGE 32VE and 32IE in Figure 4 6 and Figure 4 7 e g settings a2 k2 a0 are explained in the following subsection Directional Control Settings Best Choice Ground Direction...

Page 103: ...f Potential Note in Figure 4 12 that if all the following are true enable setting ELOP Y a loss of potential condition occurs Relay Word bit LOP asserts and internal enable 32IE for channel IP current polarized directional element is not asserted then the forward logic point Relay Word bit 32GF asserts to logical 1 thus enabling the residual ground overcurrent elements that are set direction forwa...

Page 104: ...1205 Load Encroachment and Directional Element Logic SEL 311B Instruction Manual From Figure 4 7 To Figure 4 8 To Figure 4 9 To Figure 4 9 To Figure 4 14 Figure 4 6 Internal Enables 32QE and 32QGE Logic for Negative Sequence Voltage Polarized Directional Elements ...

Page 105: ...oachment and Directional Element Logic SEL 311B Instruction Manual To Figure 4 10 To Figure 4 8 To Figure 4 11 To Figure 4 12 To Figure 4 6 Figure 4 7 Internal Enables 32VE and 32IE Logic for Zero Sequence Voltage Polarized and Channel IP Current Polarized Directional Elements ...

Page 106: ...Transient Detection Date Code 20011205 Load Encroachment and Directional Element Logic SEL 311B Instruction Manual From Figure 4 6 Figure 4 10 From Figure 4 7 Figure 4 12 Figure 4 9 Figure 4 8 Best Choice Ground Directional Logic ...

Page 107: ... Load Encroachment and Directional Element Logic SEL 311B Instruction Manual From Figure 4 6 From Figure 4 8 From Figure 4 1 To Figure 4 12 Figure 4 9 Negative Sequence Voltage Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements ...

Page 108: ...05 Load Encroachment and Directional Element Logic SEL 311B Instruction Manual From Figure 4 7 From Figure 4 8 From Figure 4 1 To Figure 4 12 Figure 4 10 Zero Sequence Voltage Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements ...

Page 109: ... 17 Load Encroachment and Directional Element Logic SEL 311B Instruction Manual From Figure 4 7 From Figure 4 8 From Figure 4 1 To Figure 4 12 Figure 4 11 Channel IP Current Polarized Directional Element for Ground Distance and Residual Ground Overcurrent Elements ...

Page 110: ... and Directional Element Logic SEL 311B Instruction Manual From Figure 4 1 From Figure 4 11 From Figure 4 7 To Figure 3 7 through Figure 3 9 From Figure 4 9 and Figure 3 16 From Figure 4 10 To Figure 3 9 and Figure 3 16 Figure 4 12 Ground Distance and Residual Ground Directional Logic ...

Page 111: ...tive sequence voltage polarized directional element operates for unbalanced faults while the positive sequence voltage polarized directional element operates for three phase faults Figure 4 13 gives an overview of how the negative sequence voltage polarized and positive sequence voltage polarized directional elements are enabled and routed Figure 4 6 Figure 4 15 Figure 4 14 Figure 3 4 through Figu...

Page 112: ...hase faults Note in Figure 4 15 that the assertion of ZLOAD disables the positive sequence voltage polarized directional element ZLOAD asserts when the relay is operating in a user defined load region see Figure 4 3 Directional Element Routing Refer to Figure 4 13 and Figure 4 14 The directional element outputs are routed to the forward Relay Word bit 32QF and reverse Relay Word bit 32QR logic poi...

Page 113: ...d Encroachment and Directional Element Logic SEL 311B Instruction Manual From Figure 4 6 To Figure 3 4 through Figure 3 6 From Figure 4 1 and Figure 3 17 Figure 4 14 Negative Sequence Voltage Polarized Directional Element for Phase Distance and Negative Sequence Elements ...

Page 114: ...CTIONAL CONTROL SETTINGS The directional control for overcurrent elements is configured by making directional control enable setting E32 Setting E32 has setting choices Y All directional control settings made manually AUTO Sets most of the directional element settings automatically Settings Made Automatically If the directional control enable setting E32 is set E32 AUTO then the following directio...

Page 115: ...the elements that are controlled by each level direction setting Table 4 1 Elements Controlled by Zone Level Direction Settings Corresponding Overcurrent and Directional Element Figure Numbers in Parentheses Level Direction Settings Phase Distance Ground Distance Residual Ground Negative Sequence Forward M1P 3 4 M1PT 3 11 Z1G 3 7 Z1GT 3 11 67G1 3 15 67G1T 3 15 67Q1 3 16 67Q1T 3 16 Forward M2P 3 5 ...

Page 116: ...0 provides directional control for the ground distance and residual ground overcurrent elements all the time Setting ORDER can be set with any element combination e g ORDER IQV ORDER QVI ORDER IV ORDER VQ ORDER I ORDER Q Z2F Forward Directional Z2 Threshold Z2R Reverse Directional Z2 Threshold Setting Range 64 00 to 64 00 W secondary 5 A nominal phase current inputs IA IB IC 320 00 to 320 00 W sec...

Page 117: ...ected negative sequence current magnitude for unbalanced reverse faults 50QFP and 50QRP Set Automatically If configuration setting E32 AUTO settings 50QFP and 50QRP are set automatically at 50QFP 0 50 A secondary 5 A nominal phase current inputs IA IB IC 50QRP 0 25 A secondary 5 A nominal phase current inputs IA IB IC 50QFP 0 10 A secondary 1 A nominal phase current inputs IA IB IC 50QRP 0 05 A se...

Page 118: ...quantities in making directional decisions for the ground distance and residual ground overcurrent elements If both of the internal enables 32VE enable for the zero sequence voltage polarized directional element that controls the ground distance and residual ground overcurrent elements 32IE enable for the channel IP current polarized directional element that controls the ground distance and residu...

Page 119: ...50GR of the zero sequence voltage polarized and channel IP current polarized directional elements see Figure 4 7 Ideally the setting is above normal load unbalance and below the lowest expected zero sequence current magnitude for unbalanced reverse faults 50GFP and 50GRP Set Automatically If configuration setting E32 AUTO settings 50GFP and 50GRP are set automatically at 50GFP 0 50 A secondary 5 A...

Page 120: ... Z0F and Z0R are used to calculate the Forward and Reverse Thresholds respectively for the zero sequence voltage polarized directional elements see Figure 4 10 If configuration setting E32 Y settings Z0F and Z0R zero sequence impedance values are calculated by the user and entered by the user but setting Z0R must be greater in value than setting Z0F by 0 1 W 5A nominal or 0 5 W 1A nominal Z0F and ...

Page 121: ...sequence overcurrent elements is available with SELOGIC torque control settings Elements that do not have directional control such as 67P1 may be directionally controlled with SELOGIC control equations For example the SELOGIC control equation 67P1TC M2P will enable 67P1 and 67P1T when the Zone 2 phase distance element asserts forward The default settings for all torque control equations is logic 1...

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Page 123: ...ogic 5 8 Close Bus Operated Switch Onto Fault Logic 5 9 Switch Onto Fault Logic Output SOTFE 5 9 Switch Onto Fault Trip Logic Trip Setting TRSOTF 5 9 Front Panel Target LEDs 5 10 Additional Target LED Information 5 10 Target Reset Lamp Test Front Panel Pushbutton 5 12 TABLES Table 5 1 SEL 311B Relay Front Panel Target LED Definitions 5 10 FIGURES Figure 5 1 Trip Logic 5 2 Figure 5 2 Minimum Trip D...

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Page 125: ...Switch Onto Fault Trip Conditions Setting TRSOTF is supervised by the switch onto fault condition SOTFE See Switch Onto Fault SOTF Trip Logic on page 5 6 for more information on switch onto fault logic TR Other Trip Conditions Setting TR is the SELOGIC control equation trip setting most often used if tripping does not involve DTT or switch onto fault setting TRSOTF trip logic Note in Figure 5 1 th...

Page 126: ...ne example in Figure 5 2 the Minimum Trip Duration Timer with setting TDURD outputs a logical 1 for a time duration of TDURD cycles any time it sees a rising edge on its input logical 0 to logical 1 transition if it is not already timing timer is reset The TDURD timer ensures that the TRIP Relay Word bit remains asserted at logical 1 for a minimum of TDURD cycles If the output of OR 1 gate is logi...

Page 127: ... following setting is made TR OC IN105 With this setting the OPEN command can provide a trip only if optoisolated input IN105 is asserted This is just one OPEN command supervision example many variations are possible To prevent the execution of the OPEN command from initiating reclosing Relay Word bit OC is entered in the SELOGIC control equation setting 79DTL Drive to Lockout in the factory setti...

Page 128: ...c for Relay Word bit TRIP The factory settings for the trip logic SELOGIC control equation settings are TR M1P Z1G M2PT Z2GT 51GT 51QT OC trip conditions ULTR 50L 51G unlatch trip conditions The factory setting for the Minimum Trip Duration Timer setting is TDURD 9 000 cycles See the settings sheets in Section 9 Setting the Relay for setting ranges Set Trip In SELOGIC control equation setting TR M...

Page 129: ...utputs Timers and Other Control Logic ULTR 52A Input IN101 has to be deenergized 52a circuit breaker auxiliary contact has to be open before the trip logic unlatches and the TRIP Relay Word bit deasserts to logical 0 ULTR 52A NOT 52A Unlatch Trip with 52b Circuit Breaker Auxiliary Contact A 52b circuit breaker auxiliary contact is wired to optoisolated input IN101 52A IN101 SELOGIC control equatio...

Page 130: ...reaker is closed into an existing fault condition For example suppose safety grounds are accidentally left attached to a line If the circuit breaker is closed into such a condition the resulting fault needs to be cleared right away and reclosing blocked An instantaneous element is usually set to trip in the three pole open 3PO logic and the SOTF trip logic Refer to the switch onto fault trip logic...

Page 131: ... 2 in Section 9 Setting the Relay The open circuit breaker condition is determined by load current 50L and either one of Circuit breaker status 52A logical 0 Positive sequence voltage V1 27PO Select OPO 52 if 3PO is determined by circuit breaker status Select OPO 27 if 3PO is determined by positive sequence voltage If OPO 52 and the circuit breaker is open 52A logical 0 and current is below phase ...

Page 132: ... breaker is closed Relay Word bit 50L picks up logical 0 current above phase pickup 50LP and the 3PO condition deasserts after the 3POD dropout time 3PO logical 0 circuit breaker closed Circuit Breaker Operated Switch Onto Fault Logic Circuit breaker operated switch onto fault logic is enabled by making time setting 52AEND 52AEND OFF Time setting 52AEND qualifies the three pole open 3PO condition ...

Page 133: ...SOTF logic output SOTFE asserts to logical 1 for SOTFD time Switch Onto Fault Logic Output SOTFE Relay Word bit SOTFE is the output of the circuit breaker operated SOTF logic or the close bus operated SOTF logic described previously Time setting SOTFD in each of these logic paths provides the effective time window for the instantaneous elements in SELOGIC control equation trip setting TRSOTF to tr...

Page 134: ... picked up at time of trip 14 2 Zone Level 2 element picked up at time of trip 15 3 Zone Level 3 element picked up at time of trip 16 51 Time overcurrent element trip Target LEDs numbered 2 through 5 and 9 through 16 in Table 5 1 are updated and then latched for every new assertion rising edge of the TRIP Relay Word bit The TRIP Relay Word bit is the output of the trip logic see Figure 5 1 Further...

Page 135: ... the result of SELOGIC control equation setting DTT see Figure 5 1 Use the DT target LED to indicate tripping via remote communications channels e g via serial port commands or SCADA asserting optoisolated inputs Use SELOGIC control equation setting DTT Direct Transfer Trip to accomplish this see Figure 5 1 For example if the OPEN command or remote bit RB1 see CON Command in Section 10 Serial Port...

Page 136: ...detected during the fault M1P M2P M3P Z1G Z2G Z3G 50P1 67P1 67P2 67P3 67G1 67G2 67G3 67Q1 67Q2 67Q3 51 Target LED The 51 target LED illuminates at the rising edge of trip if a time overcurrent element 51PT 51GT or 51QT causes the trip Target Reset Lamp Test Front Panel Pushbutton When the Target Reset Lamp Test front panel pushbutton is pressed All front panel LEDs illuminate for one 1 second All ...

Page 137: ...TR DP3 SV8 DP3_1 BREAKER FAILURE DP3_0 blank Figure 5 4 Seal in of Breaker Failure Occurrence for Message Display If a breaker failure trip has occurred the momentary assertion of SV7T breaker failure trip will cause SV8 in Figure 5 4 to seal in Asserted SV8 in turn asserts DP3 causing the message BREAKER FAILURE to display in the rotating default display This message can be removed from the displ...

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Page 139: ...15 Reclosing Relay Timer Settings 6 16 Reclosing Relay Shot Counter 6 19 Reclosing Relay SELOGIC Control Equation Settings Overview 6 19 Reclose Initiate and Reclose Initiate Supervision Settings 79RI and 79RIS Respectively 6 20 Drive to Lockout and Drive to Last Shot Settings 79DTL and 79DLS Respectively 6 22 Skip Shot and Stall Open Interval Timing Settings 79SKP and 79STL Respectively 6 24 Bloc...

Page 140: ...ure 6 3 Reclose Supervision Limit Timer Operation Refer to Bottom of Figure 6 2 6 7 Figure 6 4 SEL 311B Relays Installed at Both Ends of a Transmission Line in a High Speed Reclose Scheme 6 10 Figure 6 5 Reclosing Relay States and General Operation 6 13 Figure 6 6 Reclosing Sequence From Reset to Lockout with Example Settings 6 17 Figure 6 7 Reclose Blocking for Islanded Generator 6 25 ...

Page 141: ...dition check right before the close logic asserts the close output contact Reclose Logic This subsection describes all the reclosing relay settings and logic needed for automatic reclosing besides the final close logic and reclose supervision logic described in the previous subsections The reclose enable setting E79 has setting choices N 1 2 3 and 4 Setting E79 N defeats the reclosing relay Settin...

Page 142: ...s not exist Relay Word bit CF 0 Then the CLOSE Relay Word bit can be asserted to logical 1 if either of the following occurs A reclosing relay open interval times out qualified by SELOGIC control equation setting 79CLS see Figure 6 2 Or SELOGIC control equation setting CL goes from logical 0 to logical 1 rising edge transition The CLOSE command is included in the close logic in the factory setting...

Page 143: ...The factory settings for the close logic SELOGIC control equation settings are 52A IN101 CL CC ULCL TRIP The factory setting for the Close Failure Timer setting is CFD 60 00 cycles See the settings sheets at the end of Section 9 Setting the Relay for setting ranges Set Close If the Reclosing Relay Open Interval Time Out logic input at the top of Figure 6 1 is ignored reclosing is discussed in deta...

Page 144: ...losing Relay later in this section Circuit Breaker Status Refer to the bottom of Figure 6 1 Note that SELOGIC control equation setting 52A circuit breaker status is available as Relay Word bit 52A This makes it convenient to set other SELOGIC control equations For example if the following setting is made 52A IN101 52a auxiliary contact wired to input IN101 or 52A IN101 52b auxiliary contact wired ...

Page 145: ...This input into the close logic in Figure 6 1 is the indication that a reclosing relay open interval has timed out a qualifying condition SELOGIC control equation setting 79CLS has been met and thus automatic reclosing of the circuit breaker should proceed by asserting the CLOSE Relay Word bit to logical 1 This input into the close logic in Figure 6 1 is an output of the reclose supervision logic ...

Page 146: ...6 6 Close and Reclose Logic Date Code 20011205 SEL 311B Instruction Manual To Figure 6 1 Figure 6 2 Reclose Supervision Logic Following Open Interval Time Out ...

Page 147: ...Date Code 20011205 Close and Reclose Logic 6 7 SEL 311B Instruction Manual Figure 6 3 Reclose Supervision Limit Timer Operation Refer to Bottom of Figure 6 2 ...

Page 148: ...close logic in Figure 6 1 to automatically reclose the circuit breaker If 79CLS is deasserted to logical 0 at the instant of an open interval time out the following occurs No automatic reclosing takes place Relay Word bit RCSF Reclose Supervision Failure indication asserts to logical 1 for one processing interval The reclosing relay is driven to the Lockout State See Settings Example and Additiona...

Page 149: ...ing relay open interval time out seals in Figure 6 2 Then when 79CLS asserts to logical 1 the sealed in reclosing relay open interval time out condition will propagate through Figure 6 2 and on to the close logic in Figure 6 1 Unlatch Reclose Supervision Logic Bottom of Figure 6 2 Refer to the bottom of Figure 6 2 If the reclosing relay open interval time out condition is sealed in it stays sealed...

Page 150: ...mit Timer setting is 79CLSD 0 00 cycles Any time a reclosing relay open interval times out it propagates immediately through Figure 6 2 and then on to Figure 6 1 because SELOGIC control equation setting 79CLS is always asserted to logical 1 Effectively there is no special reclose supervision Additional Settings Example 1 Refer to the top of Figure 6 2 and Figure 6 4 SEL 311B Relays are installed a...

Page 151: ...A is in synchronism with monitored single phase transmission line voltage channel VS and both are hot Other Setting Considerations for SEL 311B 1 and SEL 311B 2 Relays Refer to Skip Shot and Stall Open Interval Timing Settings 79SKP and 79STL Respectively in the following Reclosing Relay subsection SELOGIC control equation setting 79STL stalls open interval timing if it asserts to logical 1 If set...

Page 152: ... Elements Also refer to Figure 6 3 and Figure 6 4 If the synchronizing voltages across open circuit breaker 52 2 are slipping with respect to one another the Reclose Supervision Limit Timer setting 79CLSD should be set greater than zero so there is time for the slipping voltages to come into synchronism For example 79CLSD 60 00 cycles 79CLS 25A1 The status of synchronism check element 25A1 is chec...

Page 153: ...different states of the reclosing relay and its operation Figure 6 5 Reclosing Relay States and General Operation Table 6 1 Relay Word Bit and Front Panel Correspondence to Reclosing Relay States Reclosing Relay State Corresponding Relay Word Bit Corresponding Front Panel LED Reset 79RS RS Cycle 79RCY CY Lockout 79LO LO The reclosing relay is in one and only one of these states listed in Table 6 1...

Page 154: ...ectively later in this subsection The Reclose Supervision Limit Timer setting 79CLSD times out see Figure 6 2 and top of Figure 6 3 The OPEN OPE command is included in the reclosing relay logic via SELOGIC control equation settings For example 79DTL OC drive to lockout Relay Word bit OC asserts for execution of the OPE command See OPE Command Open Breaker in Section 10 Serial Port Communications a...

Page 155: ...ter in this section See also the settings sheets at the end of Section 9 Setting the Relay If the reclosing relay is defeated the following also occur Both reclosing relay state Relay Word bits 79RS and 79LO are forced to logical 0 see Table 6 1 All shot counter Relay Word bits SH0 SH1 SH2 SH3 and SH4 are forced to logical 0 the shot counter is explained later in this section The front panel LEDs ...

Page 156: ...be set For example if setting E79 3 the first three open interval time settings in Table 6 2 are made available for setting If an open interval time is set to zero then that open interval time is not operable and neither are the open interval times that follow it In the example settings in Table 6 2 the open interval 3 time setting 79OI3 is the first open interval time setting set equal to zero 79...

Page 157: ...f reclosures is equal to the number of open interval time settings that precede the first open interval time setting set equal to zero The last shot value is also equal to the number of reclosures In the above example settings two set open interval times precede open interval 3 time which is set to zero 79OI3 0 00 79OI1 30 00 79OI2 600 00 79OI3 0 00 For this example The number of reclosures last s...

Page 158: ...D emulates reclosing relays with motor driven timers that have a relatively short reset time from the lockout position to the reset position The 79RSD and 79RSLD settings are set independently setting 79RSLD can even be set greater than setting 79RSD if desired SELOGIC control equation setting 79BRS block reset timing can be set to control reset timing see Block Reset Timing Setting 79BRS later in...

Page 159: ...nter Correspondence to Relay Word Bits and Open Interval Times Shot Corresponding Relay Word Bit Corresponding Open Interval 0 SH0 79OI1 1 SH1 79OI2 2 SH2 79OI3 3 SH3 79OI4 4 SH4 When the shot counter is at a particular shot value e g shot 2 the corresponding Relay Word bit asserts to logical 1 e g SH2 logical 1 Reclosing Relay SELOGIC Control Equation Settings Overview Table 6 4 Reclosing Relay S...

Page 160: ...et in the reclose cycle state 79CY logical 0 at the instant of the first trip Then for any subsequent trip operations in the auto reclose cycle the SEL 311B is in the reclose cycle state 79CY logical 1 and the SEL 311B successfully initiates reclosing for each trip Because of setting 79RIS 52A 79CY successful reclose initiation in the reclose cycle state 79CY logical 1 is not dependent on the circ...

Page 161: ...hen 79RI 52A ULCL 0 avoids going to lockout prematurely for an instantaneous trip after an auto reclose by not turning CLOSE off until the circuit breaker status indication tells the relay that the breaker is closed The circuit breaker anti pump circuitry should take care of the TRIP and CLOSE being on together for a short period of time Other Settings Considerations 1 In the preceding additional ...

Page 162: ...t value greater than or equal to the calculated last shot see Reclosing Relay Shot Counter earlier in this subsection Settings Example The drive to lockout example setting is 79DTL IN102 LB3 OC Optoisolated input IN102 is set to operate as a reclose enable switch see Optoisolated Inputs in Section 7 Inputs Outputs Timers and Other Control Logic When Relay Word bit IN102 logical 1 reclosing enabled...

Page 163: ...y to the Lockout State immediately when the reclose enable switch optoisolated input IN102 is put in the reclosing disabled position Relay Word bit IN102 logical 0 79DTL IN102 NOT IN102 NOT logical 0 logical 1 To disable reclosing but not drive the relay to the Lockout State until the relay trips make settings similar to the following 79DTL IN102 TRIP Additional Settings Example 2 To drive the rel...

Page 164: ... shot turns out to be the last shot no open interval timing takes place and the relay goes to the Lockout State if the circuit breaker is open see Lockout State earlier in this subsection If the relay is in the middle of timing on an open interval and 79STL changes state to 79STL logical 1 open interval timing stops where it is If 79STL changes state back to 79STL logical 0 open interval timing re...

Page 165: ...H0 logical 0 and then setting 79SKP logical 0 regardless of Relay Word bit 50P2 Additional Settings Example 2 If the SEL 311B Relay is used on a line serving an independent power producer cogenerator the utility should not reclose into a line still energized by an islanded generator To monitor line voltage and block reclosing connect a line side single phase potential transformer to channel VS on ...

Page 166: ...n the reset timer is fully loaded Thus successful reset timing has to be continuous Use the RSTMN Relay Word bit to monitor reset timing see Monitoring Open Interval and Reset Timing earlier in this subsection Settings Example 1 The block reset timing setting is 79BRS 51P 51G 79CY Relay Word bit 79CY corresponds to the Reclose Cycle State The reclosing relay is in one of the three reclosing relay ...

Page 167: ... in the Reclose Cycle State This helps prevent repetitive trip reclose cycling Additional Settings Example 2 If the block reset timing setting is 79BRS 51P 51G then reset timing is blocked if time overcurrent pickup 51P or 51G is picked up regardless of the reclosing relay state Sequence Coordination Setting 79SEQ The 79SEQ setting is applicable to distribution applications for transmission system...

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Page 169: ...tch Control Switch Settings with Care 7 18 Multiple Setting Groups 7 20 Active Setting Group Indication 7 20 Selecting the Active Setting Group 7 20 Operation of SELOGIC Control Equation Settings SS1 Through SS6 7 21 Operation of Serial Port GROUP Command and Front Panel GROUP Pushbutton 7 21 Relay Disabled Momentarily During Active Setting Group Change 7 22 Active Setting Group Switching Example ...

Page 170: ...up Switching 7 26 Table 7 8 Mnemonic Settings for Metering on the Rotating Default Display 7 44 Table 7 9 Mnemonic Settings for Self Check Status on the Rotating Default Display 7 47 FIGURES Figure 7 1 Example Operation of Optoisolated Inputs IN101 Through IN106 7 2 Figure 7 2 Circuit Breaker Auxiliary Contact and Reclose Enable Switch Connected to Optoisolated Inputs IN101 and IN102 7 3 Figure 7 ...

Page 171: ... IN101 IN102 and IN103 for Active Setting Group Switching 7 26 Figure 7 22 Active Setting Group Switching with Rotating Selector Switch Time Line 7 28 Figure 7 23 SELOGIC Control Equation Variables Timers SV1 SV1T Through SV6 SV6T 7 30 Figure 7 24 SELOGIC Control Equation Variables Timers SV7 SV7T Through SV16 SV16T 7 30 Figure 7 25 Dedicated Breaker Failure Scheme Created with SELOGIC Control Equ...

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Page 173: ...istance overcurrent voltage and reclosing elements in SELOGIC control equation settings to realize numerous protection and control schemes Relay Word bits and SELOGIC control equation setting examples are used throughout this section See Section 9 Setting the Relay for more information on Relay Word bits and SELOGIC control equation settings See Section 10 Serial Port Communications and Commands f...

Page 174: ...80 internally the timer runs at the nearest 1 8 cycle 13 16 cycles 6 8 0 75 For most applications the input pickup dropout debounce timers should be set in 1 4 cycle increments The relay processing interval is 1 4 cycle so Relay Word bits IN101 through IN106 are updated every 1 4 cycle The optoisolated input status may assert input debounce timer settings less than 1 4 cycle because these timers r...

Page 175: ...ord bit IN101 Figure 7 2 is used in the settings for the SELOGIC control equation circuit breaker status setting 52A IN101 Connect input IN101 to a 52a circuit breaker auxiliary contact If a 52b circuit breaker auxiliary contact is connected to input IN101 the setting is changed to 52A IN101 IN101 NOT IN101 See Close Logic in Section 6 Close and Reclose Logic for more information on SELOGIC contro...

Page 176: ...nd the reclosing relay is driven to lockout 79DTL IN102 NOT IN102 NOT logical 0 logical 1 When the reclose enable switch is closed input IN102 is energized and the reclosing relay is enabled if no other setting condition is driving the reclosing relay to lockout 79DTL IN102 NOT IN102 NOT logical 1 logical 0 See Section 6 Close and Reclose Logic for more information on SELOGIC control equation sett...

Page 177: ...ocal Bits LB1 Through LB16 The output of the local control switch in Figure 7 3 is a Relay Word bit LBn n 1 through 16 called a local bit The local control switch logic in Figure 7 3 repeats for each local bit LB1 through LB16 Use these local bits in SELOGIC control equations For a given local control switch the local control switch positions are enabled by making corresponding label settings Note...

Page 178: ...NLBn is the overall switch name setting Make each label setting through the serial port using the command SET T View these settings using the serial port command SHO T see Section 9 Setting the Relay and Section 10 Serial Port Communications and Commands Local Control Switch Types Configure any local control switch as one of the following three switch types ON OFF Switch Local bit LBn is in either...

Page 179: ... 1 or OFF LBn logical 0 position or is in the OFF LBn logical 0 position and pulses to the MOMENTARY LBn logical 1 position for one processing interval 1 4 cycle Figure 7 6 Local Control Switch Configured as an ON OFF MOMENTARY Switch Table 7 2 Correspondence Between Local Control Switch Types and Required Label Settings Local Switch Type Label NLBn Label CLBn Label SLBn Label PLBn ON OFF X X X OF...

Page 180: ...eclosing relay to lockout CLB3 RETURN OFF position return from MOMENTARY position SLB3 ON position not used left blank PLB3 TRIP MOMENTARY position LB4 NLB4 MANUAL CLOSE closes breaker separate from automatic reclosing CLB4 RETURN OFF position return from MOMENTARY position SLB4 ON position not used left blank PLB3 CLOSE MOMENTARY position Figure 7 7 and Figure 7 8 show local control switches with...

Page 181: ...ained Power Loss The states of the local bits Relay Word bits LB1 through LB16 are retained if power to the relay is lost and then restored If a local control switch is in the ON position corresponding local bit is asserted to logical 1 when power is lost it comes back in the ON position corresponding local bit is still asserted to logical 1 when power is restored If a local control switch is in t...

Page 182: ...s made newly operable because of a settings change i e the corresponding label settings are set the corresponding local bit starts out at logical 0 REMOTE CONTROL SWITCHES Remote control switches are operated via the serial communications port only see CON Command Control Remote Bit in Section 10 Serial Port Communications and Commands Figure 7 9 Remote Control Switches Drive Remote Bits RB1 Throu...

Page 183: ...l asserted to logical 1 after the change If a remote control switch is in the OFF position corresponding remote bit is deasserted to logical 0 before a settings change or an active setting group change it comes back in the OFF position corresponding remote bit is still deasserted to logical 0 after the change If settings are changed for a setting group other than the active setting group there is ...

Page 184: ...ough 16 called a latch bit The latch control switch logic in Figure 7 11 repeats for each latch bit LT1 through LT16 Use these latch bits in SELOGIC control equations These latch control switches each have the following SELOGIC control equation settings SETn set latch bit LTn to logical 1 RSTn reset latch bit LTn to logical 0 If setting SETn asserts to logical 1 latch bit LTn asserts to logical 1 ...

Page 185: ...ed to optoisolated input IN104 Each pulse of the SCADA contact changes the state of the reclosing relay The SCADA contact is not maintained just pulsed to enable disable the reclosing relay Figure 7 12 SCADA Contact Pulses Input IN104 to Enable Disable Reclosing Relay If the reclosing relay is enabled and the SCADA contact is pulsed the reclosing relay is then disabled If the SCADA contact is puls...

Page 186: ...ack of latch bit LT1 guides input IN104 to the correct latch control switch input If latch bit LT1 logical 0 input IN104 is routed to setting SET1 set latch bit LT1 SET1 IN104 LT1 IN104 NOT LT1 IN104 NOT logical 0 IN104 rising edge of input IN104 RST1 IN104 LT1 IN104 logical 0 logical 0 If latch bit LT1 logical 1 input IN104 is routed to setting RST1 reset latch bit LT1 SET1 IN104 LT1 IN104 NOT LT...

Page 187: ...rval With latch bit LT1 now at logical 1 for the next processing interval input IN104 is routed to setting RST1 as discussed previously RST1 IN104 rising edge of input IN104 This would then appear to enable the reset input setting RST1 the next processing interval But the rising edge condition occurred during the preceding processing interval IN104 is now at logical 0 so setting RST1 does not asse...

Page 188: ...panying Figure 7 13 SET1 RB1 LT1 rising edge of remote bit RB1 AND NOT LT1 RST1 RB1 LT1 rising edge of remote bit RB1 AND LT1 79DTL LT1 NOT LT1 drive to lockout setting Pulse remote bit RB1 to enable reclosing pulse remote bit RB1 to disable reclosing etc much like the operation of optoisolated input IN104 in the previous example Remote bits Relay Word bits RB1 through RB16 are operated through th...

Page 189: ...ndividual settings are changed for the active setting group or one of the other setting groups or the active setting group is changed the states of the latch bits Relay Word bits LT1 through LT16 are retained much like in the preceding Power Loss explanation If individual settings are changed for a setting group other than the active setting group there is no interruption of the latch bits the rel...

Page 190: ...r relay service life This requires that SELOGIC control equation settings SETn and RSTn for any given latch bit LTn be set with care Settings SETn and RSTn cannot result in continuous cyclical operation of latch bit LTn Use timers to qualify conditions set in settings SETn and RSTn If any optoisolated inputs IN101 through IN106 are used in settings SETn and RSTn the inputs have their own debounce ...

Page 191: ...o 300 cycles Then the SV6T timer keeps the state of latch bit LT1 from being able to be changed at a rate faster than once every 300 cycles 5 seconds Figure 7 16 Latch Control Switch with Time Delay Feedback Controlled by a Single Input to Enable Disable Reclosing Figure 7 17 Latch Control Switch with Time Delay Feedback Operation Time Line ...

Page 192: ...ting Group 3 is the active setting group SG4 Indication that setting Group 4 is the active setting group SG5 Indication that setting Group 5 is the active setting group SG6 Indication that setting Group 6 is the active setting group For example if setting Group 4 is the active setting group Relay Word bit SG4 asserts to logical 1 and the other Relay Word bits SG1 SG2 SG3 SG5 and SG6 are all deasse...

Page 193: ... logical 0 setting Group 3 still remains the active setting group With setting Group 3 as the active setting group if setting SS3 is deasserted to logical 0 and one of the other settings e g setting SS5 asserts to logical 1 the relay switches from setting Group 3 as the active setting group to another setting group e g setting Group 5 as the active setting group after qualifying time setting TGR T...

Page 194: ...lay In this example optoisolated input IN105 on the relay is connected to a SCADA contact in Figure 7 18 Each pulse of the SCADA contact changes the active setting group from one setting group e g setting Group 1 to another e g setting Group 4 The SCADA contact is not maintained just pulsed to switch from one active setting group to another Figure 7 18 SCADA Contact Pulses Input IN105 to Switch Ac...

Page 195: ...ups 1 and 4 Figure 7 19 SELOGIC Control Equation Variable Timer SV8T Used in Setting Group Switching In this example timer SV8T is used in both setting groups different timers could have been used with the same operational result The timers reset during the setting group change allowing the same timer to be used in both setting groups Timer pickup setting SV8PU is set greater than the pulse width ...

Page 196: ...ise for the setting Group 4 settings at the bottom of the figure Setting Group 4 is now the active setting group and Relay Word bit SG4 asserts to logical 1 After the relay has been in setting Group 4 for a time period equal to SV8PU the timer logic output SV8T asserts to logical 1 thus enabling SELOGIC control equation setting SS1 for a new assertion of input IN105 Note that input IN105 is still ...

Page 197: ... by the assertion of three optoisolated inputs e g IN101 IN102 and IN103 in different combinations as shown in Table 7 6 Table 7 6 Active Setting Group Switching Input Logic Input States Active IN103 IN102 IN101 Setting Group 0 0 0 Remote 0 0 1 Group 1 0 1 0 Group 2 0 1 1 Group 3 1 0 0 Group 4 1 0 1 Group 5 1 1 0 Group 6 The SEL 311B Relay can be programmed to operate similarly Use three optoisola...

Page 198: ...in Table 7 7 when the selector switch is moved from one position to another a different setting group is activated The logic in Table 7 6 is implemented in the SELOGIC control equation settings in Table 7 7 Table 7 7 SELOGIC Control Equation Settings for Rotating Selector Switch Active Setting Group Switching SS1 IN103 IN102 IN101 NOT IN103 NOT IN102 IN101 SS2 IN103 IN102 IN101 NOT IN103 IN102 NOT...

Page 199: ...e desired setting group position Selector Switch Switched to Position 5 Refer to Figure 7 22 If the selector switch is rested on position 5 in Figure 7 21 setting Group 5 becomes the active setting group after qualifying time setting TGR Relay Word bit SG5 logical 1 Inputs IN101 and IN103 are energized and IN102 is deenergized SS5 IN103 IN102 IN101 IN103 NOT IN102 IN101 logical 1 NOT logical 0 log...

Page 200: ...oup active when power is restored Settings Change If individual settings are changed for the active setting group or one of the other setting groups the active setting group is retained much like in the preceding Power Loss explanation If individual settings are changed for a setting group other than the active setting group there is no interruption of the active setting group the relay is not mom...

Page 201: ...group If optoisolated inputs IN101 through IN106 are used in settings SS1 through SS6 the inputs have their own built in debounce timer that can help in providing the necessary time qualification see Figure 7 1 SELOGIC CONTROL EQUATION VARIABLES TIMERS The SELOGIC control equation variables timers are enabled using the ESV setting Set ESV to the number of SELOGIC control equation variables timers ...

Page 202: ...d Other Control Logic Date Code 20011205 SEL 311B Instruction Manual Figure 7 23 SELOGIC Control Equation Variables Timers SV1 SV1T Through SV6 SV6T Figure 7 24 SELOGIC Control Equation Variables Timers SV7 SV7T Through SV16 SV16T ...

Page 203: ...ings Example 1 Another application idea is dedicated breaker failure protection see Figure 7 25 SV6 IN101 breaker failure initiate SV7 SV7 IN101 50P1 50G1 OUT101 SV6T retrip OUT102 SV7T breaker failure trip Figure 7 25 Dedicated Breaker Failure Scheme Created with SELOGIC Control Equation Variables Timers Note that the above SELOGIC control equation setting SV7 creates a seal in logic circuit as s...

Page 204: ...e SELOGIC control equation setting SV7 to SV IN101 50P1 50G1 If the seal in logic circuit is removed optoisolated input IN101 breaker failure initiate has to be continually asserted for a breaker failure time out Timers Reset When Power Is Lost Settings Are Changed or Active Setting Group Is Changed If power is lost to the relay settings are changed for the active setting group or the active setti...

Page 205: ...rial port command PULSE n n OUT101 through OUT107 asserts the corresponding Relay Word bit OUT101 through OUT107 to logical 1 The assertion of SELOGIC control equation setting OUTm m 101 through 107 to logical 1 also asserts the corresponding Relay Word bit OUTm m 101 through 107 to logical 1 The assertion of Relay Word bit OUTm m 101 through 107 to logical 1 causes the energization of the corresp...

Page 206: ...ntact coil is deenergized and open when the output contact coil is energized To verify ALARM output contact mechanical integrity execute the serial port command PULSE ALARM Execution of this command momentarily deenergizes the ALARM output contact coil The Relay Word bit ALARM is deasserted to logical 0 when the relay is operational When the serial port command PULSE ALARM is executed the ALARM Re...

Page 207: ...ration ROTATING DEFAULT DISPLAY ONLY ON MODELS WITH LCD The rotating default display on the relay front panel replaces indicating panel lights Traditional indicating panel lights are turned on and off by circuit breaker auxiliary contacts front panel switches SCADA contacts etc They indicate such conditions as circuit breaker open closed reclosing relay enabled disabled ...

Page 208: ... Figure 7 27 the 79 ENABLED panel light illuminates when the 79 Enable switch is closed When the 79 Enable switch is open the 79 ENABLED panel light extinguishes and it is understood that the reclosing relay is disabled Circuit Breaker Status Indication In Figure 7 27 the BREAKER CLOSED panel light illuminates when the 52a circuit breaker auxiliary contact is closed When the 52a circuit breaker au...

Page 209: ...d SET T View these text settings using the serial port command SHO T see Section 9 Setting the Relay and Section 10 Serial Port Communications and Commands These text settings are displayed on the SEL 311B Relay front panel display on a time variable rotation using Global setting SCROLD see Rotating Default Display in Section 11 Front Panel Interface for more specific operation information The fol...

Page 210: ...sults in the display of corresponding text setting DP1_1 on the front panel display 79 ENABLED Reclosing Relay Disabled In Figure 7 28 optoisolated input IN102 is deenergized to disable the reclosing relay resulting in DP1 IN102 logical 0 This results in the display of corresponding text setting DP1_0 on the front panel display 79 DISABLED Circuit Breaker Status Indication Make SELOGIC control equ...

Page 211: ...lay of corresponding text setting DP2_0 on the front panel display BREAKER OPEN Additional Settings Examples Display Only One Message To display just one screen but not its complement set only one of the text settings For example to display just the breaker closed condition but not the breaker open condition make the following settings DP2 IN101 52a circuit breaker auxiliary contact connected to i...

Page 212: ...ine 1204 the line name can be continually displayed with the following settings DP5 1 set directly to logical 1 DP5_1 LINE 1204 displays when DP5 logical 1 DP5_0 blank This results in the continual display of text setting DP5_1 on the front panel display LINE 1204 This can also be realized with the following settings DP5 0 set directly to logical 0 DP5_1 blank DP5_0 LINE 1204 displays when DP5 log...

Page 213: ...ponding text setting DP1_1 on the front panel display 79 ENABLED Reclosing Relay Disabled In Figure 7 28 optoisolated input IN102 is deenergized to disable the reclosing relay resulting in DP1 IN102 logical 0 This results in the display of corresponding text setting DP1_0 on the front panel display 79 DISABLED Now the active setting group is switched from setting Group 1 to 4 Switch to Setting Gro...

Page 214: ...rmation To program a display point to show the pickup setting of a time overcurrent element first enter the two character sequence double colon followed by the name of the desired time overcurrent element pickup settings for 51PP 51GP or 51QP For example with the factory default settings for 51PP and CTR setting DP1_0 51PP will display 1200 00 A pri The relay calculates the value to display by mul...

Page 215: ...6 and the description set on the odd display points DP1 DP3 each screen the relay scrolls through will have a description with the value below it For additional format control for the setting elements only use the following SET T control string Dpi_j XXX ABCDE YYY where i is a number between 1 and 16 representing the 16 display points and j is either 1 or 0 representing logic high or low respectiv...

Page 216: ...º IC input current IP I P x x x x A y y y º IN input current VA V A x x x x K V y y y º VA input voltage VB V B x x x x K V y y y º VB input voltage VC V C x x x x K V y y y º VC input voltage VS V S x x x x K V y y y º VS input voltage IG I G x x x x A y y y º IG IA IB IC residual 3IO 3 I 0 x x x x A y y y º 3IO IG zero sequence I1 I 1 x x x x A y y y º positive sequence current 3I2 3 I 2 x x x x...

Page 217: ...x x x B peak megawatts in MWCDI MW C I N D E M x x x x C demand megawatts in MWCPI MW C I N P K x x x x C peak megawatts in MW3DI MW 3 I N D E M x x x x three phase demand megawatts in MW3PI MW 3 I N P K x x x x three phase peak megawatts in MVRADI M V R A I D E M x x x x A demand megavars in MVRAPI M V R A I P K x x x x A peak megavars in MVRBDI M V R B I D E M x x x x B demand megavars in MVRBPI...

Page 218: ...x x x x x A megavar hours in MVRHAO M V A R h A O x x x x x A megavar hours out MVRHBI M V A R h B I x x x x x B megavar hours in MVRHBO M V A R h B O x x x x x B megavar hours out MVRHCI M V A R h C I x x x x x C megavar hours in MVRHCO M V A R h C O x x x x x C megavar hours out MVRH3I M V A R h 3 I x x x x x three phase megavar hours in MVRH3O M V A R h 3 O x x x x x three phase megavar hours o...

Page 219: ... S T D A T m m d d y y last reset date BRKTIME R S T T I M h h m m s s last reset time CTRLTR C T R L T R I P S x x x x x internal trip count OPSCNTR O P S C N T R x x x x x internal trip count CTRLIA C T R L I A x x x x x k A internal trip S IA CTRLIB C T R L I B x x x x x k A internal trip S IB CTRLIC C T R L I C x x x x x k A internal trip S IC EXTTR E X T T R I P S x x x x x external trip coun...

Page 220: ...splay in the rotating default display Set the following SET T SET L DP1_0 EXTTR DP1 0 DP2_0 CTRLTR DP2 0 DP3_0 CTRLIA DP3 0 DP4_0 EXTIA DP4 0 DP5_0 WEARA DP5 0 Setting DPn 0 and using the DPn_0 in the text settings allows the setting to permanently rotate in the display The DPn logic equation can be set to control the text display turning it on and off under certain conditions With the relay set a...

Page 221: ...n Raise Pickup for Unbalance Current 8 26 View or Reset Demand Metering Information 8 28 Demand Metering Updating and Storage 8 28 Energy Metering 8 28 View or Reset Energy Metering Information 8 28 Energy Metering Updating and Storage 8 29 Maximum Minimum Metering 8 29 View or Reset Maximum Minimum Metering Information 8 29 Maximum Minimum Metering Updating and Storage 8 30 TABLES Table 8 1 Break...

Page 222: ...voltage Elements 8 15 Figure 8 10 Create DC Voltage Elements with SELOGIC Control Equations 8 16 Figure 8 11 Response of Thermal and Rolling Demand Meters to a Step Input Setting DMTC 15 Minutes 8 21 Figure 8 12 Current IS Applied to Parallel RC Circuit 8 22 Figure 8 13 Demand Current Logic Outputs 8 25 Figure 8 14 Raise Pickup of Residual Ground Time Overcurrent Element for Unbalance Current 8 26...

Page 223: ...ance The breaker monitor is enabled with the enable setting EBMON Y The breaker monitor settings in Table 8 2 are available via the SET G and SET L commands see Table 9 1 in Section 9 Setting the Relay and also Settings Sheet 17 at the end of Section 9 Also refer to BRE Command Breaker Monitor Data and BRE n Command Preload Reset Breaker Wear in Section 10 Serial Port Communications and Commands T...

Page 224: ... breaker maintenance information in Table 8 1 is plotted in Figure 8 1 Connect the plotted points in Figure 8 1 for a breaker maintenance curve To estimate this breaker maintenance curve in the SEL 311B Relay breaker monitor three set points are entered Set Point 1 maximum number of close open operations with corresponding current interruption level Set Point 2 number of close open operations that...

Page 225: ...Date Code 20011205 Breaker Monitor and Metering Functions 8 3 SEL 311B Instruction Manual Figure 8 1 Plotted Breaker Maintenance Points for an Example Circuit Breaker ...

Page 226: ...P1 100 The following settings are made from the breaker maintenance information in Table 8 1 and Figure 8 1 COSP1 10000 COSP2 150 COSP3 12 KASP1 1 20 KASP2 8 00 KASP3 20 00 Figure 8 2 shows the resultant breaker maintenance curve Breaker Maintenance Curve Details In Figure 8 2 note that set points KASP1 COSP1 and KASP3 COSP3 are set with breaker maintenance information from the two extremes in Tab...

Page 227: ...Date Code 20011205 Breaker Monitor and Metering Functions 8 5 SEL 311B Instruction Manual Figure 8 2 SEL 311B Relay Breaker Maintenance Curve for an Example Circuit Breaker ...

Page 228: ... 1 transition as the indication to read in current values The acquired current values are then applied to the breaker maintenance curve and the breaker monitor accumulated currents trips For example the SELOGIC control equation breaker monitor initiation setting may be set BKMON TRIP TRIP is the logic output of Figure 5 1 Refer to Figure 8 3 When BKMON asserts Relay Word bit TRIP goes from logical...

Page 229: ...ed 290 times 290 close open operations 480 190 pushing the breaker maintenance curve from the 10 percent wear level to the 25 percent wear level Compare the 100 percent and 25 percent curves and note that for a given current value the 25 percent curve has only 1 4 of the close open operations of the 100 percent curve 25 Percent to 50 Percent Breaker Wear Refer to Figure 8 6 The current value chang...

Page 230: ...8 8 Breaker Monitor and Metering Functions Date Code 20011205 SEL 311B Instruction Manual Figure 8 4 Breaker Monitor Accumulates 10 Percent Wear ...

Page 231: ...Date Code 20011205 Breaker Monitor and Metering Functions 8 9 SEL 311B Instruction Manual Figure 8 5 Breaker Monitor Accumulates 25 Percent Wear ...

Page 232: ...8 10 Breaker Monitor and Metering Functions Date Code 20011205 SEL 311B Instruction Manual Figure 8 6 Breaker Monitor Accumulates 50 Percent Wear ...

Page 233: ...Date Code 20011205 Breaker Monitor and Metering Functions 8 11 SEL 311B Instruction Manual Figure 8 7 Breaker Monitor Accumulates 100 Percent Wear ...

Page 234: ...ee BRE Command Breaker Monitor Data in Section 10 Serial Port Communications and Commands The BRE command displays the following information Accumulated number of relay initiated trips Accumulated interrupted current from relay initiated trips Accumulated number of externally initiated trips Accumulated interrupted current from externally initiated trips Percent circuit breaker contact wear for ea...

Page 235: ...ip count information accumulated Under relay initiated trips or externally initiated trips To make this determination the status of the TRIP Relay Word bit is checked at the instant BKMON newly asserts TRIP is the logic output of Figure 5 1 If TRIP is asserted TRIP logical 1 the current and trip count information is accumulated under relay initiated trips Rly Trips If TRIP is deasserted TRIP logic...

Page 236: ...asserts energizing the trip bus the breaker monitor will deem it an externally initiated trip This is because when BKMON is newly asserted input IN106 energized the TRIP Relay Word bit is deasserted Thus the current and trip count information is accumulated under externally initiated trips Ext Trips STATION DC BATTERY MONITOR The station dc battery monitor in the SEL 311B Relay can alarm for under...

Page 237: ...wer supply limits listed in Section1 Introduction and Specifications Figure 8 9 DC Under and Overvoltage Elements Logic outputs DCLO and DCHI in Figure 8 9 operate as follows DCLO 1 logical 1 if Vdc pickup setting DCLOP 0 logical 0 if Vdc pickup setting DCLOP DCHI 1 logical 1 if Vdc pickup setting DCHIP 0 logical 0 if Vdc pickup setting DCHIP Create Desired Logic for DC Under and Overvoltage Alarm...

Page 238: ...DCHIP are set such that output contact OUT106 asserts when dc battery voltage goes below or above allowable limits If the relay loses power entirely Vdc 0 Vdc Vdc DCLOP then output contact OUT106 should logically assert according to top of Figure 8 10 but cannot because of the total loss of power all output contacts deassert on total loss of power Thus the resultant dc voltage element at the botto...

Page 239: ...ting OUT106 is asserted OUT106 SV4T logical 1 dc voltage OK the state of output contact OUT106 according to contact type is closed a type output contact open b type output contact If SELOGIC control equation setting OUT106 is deasserted OUT106 SV4T logical 0 dc voltage not OK the state of output contact OUT106 according to contact type is open a type output contact closed b type output contact If ...

Page 240: ...in Section 12 Station DC Battery Voltage Dips During Circuit Breaker Tripping Event reports are automatically generated when the TRIP Relay Word bit asserts TRIP is the logic output of Figure 5 1 For example output contact OUT101 is set to trip OUT101 TRIP When output contact OUT101 closes and energizes the circuit breaker trip coil any change in station dc battery voltage can be observed in colum...

Page 241: ...can be used to time tag station dc battery voltage dips see Sequential Events Recorder SER Report in Section 12 Standard Event Reports and SER Operation of Station DC Battery Monitor When AC Voltage Is Powering the Relay If the SEL 311B Relay has a 125 250 Vac Vdc supply it can be powered by ac voltage 85 to 264 Vac connected to the rear panel terminals labeled POWER When powering the relay with a...

Page 242: ...le and three phase megawatts Single and three phase megavars Depending on enable setting EDEM these demand and peak demand values are thermal demand or rolling demand values The differences between thermal and rolling demand metering are explained in the following discussion Comparison of Thermal and Rolling Demand Meters The example in Figure 8 11 shows the response of thermal and rolling demand ...

Page 243: ...Date Code 20011205 Breaker Monitor and Metering Functions 8 21 SEL 311B Instruction Manual Figure 8 11 Response of Thermal and Rolling Demand Meters to a Step Input Setting DMTC 15 Minutes ...

Page 244: ...p current input top In general just as voltage VC across the capacitor in Figure 8 12 cannot change instantaneously the thermal demand meter response cannot change instantaneously for increasing or decreasing current The thermal demand meter response time is based on the demand meter time constant setting DMTC see Table 8 3 Note in Figure 8 11 the thermal demand meter response middle is at 90 perc...

Page 245: ...y step calculation of the rolling demand response example in Figure 8 11 bottom Time 0 Minutes Presume that the instantaneous current has been at zero for quite some time before Time 0 minutes or the demand meters were reset The three 5 minute intervals in the sliding time window at Time 0 minutes each integrate into the following 5 minute totals 5 Minute Totals Corresponding 5 Minute Interval 0 0...

Page 246: ...0 to 5 minutes 1 0 per unit 5 to 10 minutes 1 0 per unit 10 to 15 minutes 3 0 per unit Rolling demand meter response at Time 15 minutes 3 0 3 1 0 per unit Demand Meter Settings Table 8 3 Demand Meter Settings and Settings Range Setting Definition Range EDEM Demand meter type THM thermal ROL rolling DMTC Demand meter time constant 5 10 15 30 or 60 minutes PDEMP Phase demand current pickup OFF GDEMP...

Page 247: ...nd current pickup settings in Table 8 3 are applied to demand current meter outputs as shown in Figure 8 13 For example when residual ground demand current IG DEM goes above corresponding demand pickup GDEMP Relay Word bit GDEM asserts to logical 1 Use these demand current logic outputs PDEM GDEM and QDEM to alarm for high loading or unbalance conditions Use in other schemes such as the following ...

Page 248: ...rd bit GDEM to detect the residual ground unbalance demand current IG DEM and effectively raise the pickup of the residual ground time overcurrent element 51GT This is accomplished with the following settings from Table 8 3 pertinent residual ground overcurrent element settings and SELOGIC control equation torque control setting 51GTC EDEM THM DMTC 5 GDEMP 1 0 51GP 1 50 50G2P 2 30 51GTC GDEM GDEM ...

Page 249: ...trends Residual Ground Demand Current Goes Above Pickup GDEMP When unbalance current IG increases unbalance demand current IG DEM follows going above corresponding demand pickup GDEMP 1 00 A secondary and Relay Word bit GDEM asserts to logical 1 This results in SELOGIC control equation torque control setting 51GTC being in the state 51GTC GDEM GDEM 50G2 NOT GDEM GDEM 50G2 NOT logical 1 logical 1 5...

Page 250: ...vailable via the front panel METER pushbutton See Figure 11 2 in Section 11 Front Panel Interface Demand Metering Updating and Storage The SEL 311B Relay updates demand values approximately every 2 seconds The relay stores peak demand values to nonvolatile storage once per day it overwrites the previous stored value if it is exceeded Should the relay lose control power it will restore the peak dem...

Page 251: ...3 50 hours on the previous day MAXIMUM MINIMUM METERING View or Reset Maximum Minimum Metering Information Via Serial Port See MET Command Metering Data MET M Maximum Minimum Metering in Section 10 Serial Port Communications and Commands The MET M command displays maximum minimum metering for the following values Currents IA B C IG Input currents A primary Residual ground current A primary IG 3I0 ...

Page 252: ...pdating of maximum minimum metering values The metering value is above the previous maximum or below the previous minimum for 2 cycles For voltage values the voltage is above 13 V secondary For current values the currents are above 0 25 A secondary 5 A nominal 0 05 A secondary 1 A nominal Megawatt and megavar values are subject to the above voltage and current thresholds The SEL 311B Relay stores ...

Page 253: ...e SEL 311B Relay 9 29 TABLES Table 9 1 Serial Port SET Commands 9 1 Table 9 2 Set Command Editing Keystrokes 9 2 Table 9 3 SEL 311B Relay Word Bits 9 7 Table 9 4 Relay Word Bit Definitions for the SEL 311B 9 8 FIGURES Figure 9 1 U S Moderately Inverse Curve U1 9 4 Figure 9 2 U S Inverse Curve U2 9 4 Figure 9 3 U S Very Inverse Curve U3 9 4 Figure 9 4 U S Extremely Inverse Curve U4 9 4 Figure 9 5 U...

Page 254: ......

Page 255: ...imers etc 16 17 SET R SER Sequential Events Recorder trigger conditions 18 SET T Text Front panel default display and local control text 19 22 SET P m Port Serial port settings for Serial Port m m 1 2 3 or F 23 Located at the end of this section View settings with the respective serial port SHOWSET commands SHO SHO L SHO G SHO R SHO T SHO P See SHO Command Showset in Section 10 Serial Port Communi...

Page 256: ...diting keystrokes are shown in Table 9 2 Table 9 2 Set Command Editing Keystrokes Press Key s Results ENTER Retains setting and moves to the next setting ENTER Returns to previous setting ENTER Returns to previous section ENTER Moves to next section END ENTER Exits editing session then prompts you to save the settings CTRL X Aborts editing session without saving changes The relay checks each entry...

Page 257: ...rent Relays tp operating time in seconds tr electromechanical induction disk emulation reset time in seconds if electromechanical reset setting is made TD time dial setting M applied multiples of pickup current for operating time tp M 1 for reset time tr M 1 U S Moderately Inverse Curve U1 U S Inverse Curve U2 tp TD 0 0226 0 0104 M0 02 1 tp TD 0 180 5 95 M2 1 tr TD 1 08 1 M2 tr TD 5 95 1 M2 U S Ve...

Page 258: ...g the Relay Date Code 20011205 SEL 311B Instruction Manual Figure 9 1 U S Moderately Inverse Curve U1 Figure 9 2 U S Inverse Curve U2 Figure 9 3 U S Very Inverse Curve U3 Figure 9 4 U S Extremely Inverse Curve U4 ...

Page 259: ... Code 20011205 Setting the Relay 9 5 SEL 311B Instruction Manual Figure 9 5 U S Short Time Inverse Curve U5 Figure 9 6 I E C Class A Curve Standard Inverse C1 Figure 9 7 I E C Class B Curve Very Inverse C2 ...

Page 260: ... 90 100 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 01 02 03 04 05 06 07 08 09 100 1 2 3 4 5 6 7 8 9 5 6 7 8 9 90 80 70 60 50 40 30 20 10 Time in Seconds Time in Cycles 60 Hz 50Hz 6000 5000 3000 2500 1500 1250 600 500 300 250 150 125 60 50 30 25 15 12 5 6 5 3 2 5 DWG M300G153 Multiples of Pickup 0 05 0 10 0 20 0 30 0 40 0 50 0 60 0 70 0 80 0 90 1 00 Figure 9 10 I E C Short Time Inverse Curve C5 ...

Page 261: ... 4 51G 51GT 51GR LOP ILOP ZLOAD ZLOUT ZLIN 5 LB1 LB2 LB3 LB4 LB5 LB6 LB7 LB8 6 LB9 LB10 LB11 LB12 LB13 LB14 LB15 LB16 7 RB1 RB2 RB3 RB4 RB5 RB6 RB7 RB8 8 RB9 RB10 RB11 RB12 RB13 RB14 RB15 RB16 9 LT1 LT2 LT3 LT4 LT5 LT6 LT7 LT8 10 LT9 LT10 LT11 LT12 LT13 LT14 LT15 LT16 11 SV1 SV2 SV3 SV4 SV1T SV2T SV3T SV4T 12 SV5 SV6 SV7 SV8 SV5T SV6T SV7T SV8T 13 SV9 SV10 SV11 SV12 SV9T SV10T SV11T SV12T 14 SV13 ...

Page 262: ...BADB ROKB LBOKA CBADA RBADA ROKA 1 See Figure 7 1 for more information on the operation of optoisolated inputs IN101 through IN106 2 All output contacts can be a or b type contacts See Figure 2 7 and Figure 7 26 for more information on the operation of output contacts OUT101 through ALARM Table 9 4 Relay Word Bit Definitions for the SEL 311B Row Bit Definition Primary Application 0 EN Relay Enable...

Page 263: ...ne 2 phase distance instantaneous see Figure 3 5 M2PT Zone 2 phase distance time delayed see Figure 3 12 Z2G Zone 2 mho distance instantaneous see Figure 3 8 Z2GT Zone 2 ground distance time delayed see Figure 3 12 3 Z1T Zone 1 phase and or ground distance time delayed see Figure 3 12 Z2T Zone 2 phase and or ground distance time delayed see Figure 3 12 50P1 Level 1 phase instantaneous overcurrent ...

Page 264: ...nt element 51GT reset see Figure 3 16 Testing LOP Loss of potential see Figure 4 1 Testing Special directional control schemes ILOP Internal loss of potential see Figure 4 1 Distance directional control enable ZLOAD ZLOUT ZLIN see Figure 4 3 Special phase overcurrent element control ZLOUT Load encroachment load out element see Figure 4 3 ZLIN Load encroachment load in element see Figure 4 3 5 LB1 ...

Page 265: ...mote Bit 6 asserted see Figure 7 9 Remote Bit 7 asserted see Figure 7 9 Remote Bit 8 asserted see Figure 7 9 Remote control via serial port 8 RB9 RB10 RB11 RB12 RB13 RB14 RB15 RB16 Remote Bit 9 asserted see Figure 7 9 Remote Bit 10 asserted see Figure 7 9 Remote Bit 11 asserted see Figure 7 9 Remote Bit 12 asserted see Figure 7 9 Remote Bit 13 asserted see Figure 7 9 Remote Bit 14 asserted see Fig...

Page 266: ...ELOGIC control equation variable timer input SV4 asserted see Figure 7 23 SV1T SELOGIC control equation variable timer output SV1T asserted see Figure 7 23 Control SV2T SELOGIC control equation variable timer output SV2T asserted see Figure 7 23 SV3T SELOGIC control equation variable timer output SV3T asserted see Figure 7 23 SV4T SELOGIC control equation variable timer output SV4T asserted see Fi...

Page 267: ...ntrol equation variable timer output SV10T asserted see Figure 7 24 SV11T SELOGIC control equation variable timer output SV11T asserted see Figure 7 24 SV12T SELOGIC control equation variable timer output SV12T asserted see Figure 7 24 14 SV13 SV14 SV15 SV16 SELOGIC control equation variable timer input SV13 asserted see Figure 7 24 SELOGIC control equation variable timer input SV14 asserted see F...

Page 268: ...ault trip 16 MAG1 Mho ground distance A phase zone 1 see Figure 3 7 Testing MBG1 Mho ground distance B phase zone 1 see Figure 3 7 MCG1 Mho ground distance C phase zone 1 see Figure 3 7 MAG2 Mho ground distance A phase zone 2 see Figure 3 8 MBG2 Mho ground distance B phase zone 2 see Figure 3 8 MCG2 Mho ground distance C phase zone 2 see Figure 3 8 DCHI Station dc battery instantaneous overvoltage...

Page 269: ...3 active see Table 7 3 SG4 Setting group 4 active see Table 7 3 SG5 Setting group 5 active see Table 7 3 SG6 Setting group 6 active see Table 7 3 OC Asserts 1 4 cycle for Open Command execution see OPE Command Open Breaker in Section 10 Serial Port Communications and Commands Control CC Asserts 1 4 cycle for Close Command execution see CLO Command Close Breaker in Section 10 Serial Port Communicat...

Page 270: ...uence overcurrent threshold exceeded see Figures 4 5 4 6 and 4 14 50GF Forward direction residual ground overcurrent threshold exceeded see Figures 4 5 and 4 7 50GR Reverse direction residual ground overcurrent threshold exceeded see Figures 4 5 and 4 7 21 32QF Forward directional control routed to phase distance elements see Figures 4 13 and 4 14 Directional control 32QR Reverse directional contr...

Page 271: ...e voltage polarized directional element see Figure 4 5 and 4 10 23 IN106 IN105 IN104 IN103 IN102 IN101 Optoisolated input IN106 asserted see Figure 7 1 Optoisolated input IN105 asserted see Figure 7 1 Optoisolated input IN104 asserted see Figure 7 1 Optoisolated input IN103 asserted see Figure 7 1 Optoisolated input IN102 asserted see Figure 7 1 Optoisolated input IN101 asserted see Figure 7 1 Rel...

Page 272: ...rque controlled phase instantaneous overcurrent element derived from 50P2 see Figure 3 13 67P2T Level 2 phase definite time overcurrent element 67P2T timed out derived from 67P2 see Figure 3 13 50P3 Level 3 Phase instantaneous overcurrent element A B or C above pickup setting 50P3P see Figure 3 13 67P3 Level 3 torque controlled phase instantaneous overcurrent element derived from 50P3 see Figure 3...

Page 273: ...e current above pickup setting 51PP for phase time overcurrent element 51PT see Figure 3 18 Testing Control 51PT Phase time overcurrent element 51PT timed out see Figure 3 18 Tripping 51PR Phase time overcurrent element 51PT reset see Figure 3 18 Testing Z1X Zone 1 extension element picked up see Figure 3 11 Indication 59VA Channel VA voltage window element channel VA voltage between threshold set...

Page 274: ...VS less than setting 25SF see Figure 3 24 25A1 Synchronism check element see Figure 3 25 25A2 Synchronism check element see Figure 3 25 RCSF Reclose supervision failure asserts for 1 4 cycle see Figure 6 2 OPTMN Open interval timer is timing see Reclosing Relay in Section 6 Close and Reclose Logic RSTMN Reset timer is timing see Reclosing Relay in Section 6 Close and Reclose Logic 31 79RS Reclosin...

Page 275: ...nt above pickup setting 50Q1P see Figure 3 17 Tripping 67Q1 Level 1 torque controlled negative sequence instantaneous overcurrent element derived from 50Q1 see Figure 3 17 67Q1T Level 1 torque controlled negative sequence definite time overcurrent element 67Q1T timed out derived from 67Q1 see Figure 3 17 50Q2 Level 2 negative sequence instantaneous overcurrent element negative sequence current abo...

Page 276: ...Q3 see Figure 3 17 39 51Q Negative sequence current above pickup setting 51QP for negative sequence time overcurrent element 51QT see Figure 3 20 Testing Control 51QT Negative sequence time overcurrent element 51QT timed out see Figure 3 20 Tripping 51QR Negative sequence time overcurrent element 51QT reset see Figure 3 20 Testing Not used Not used 40 41 42 27A A phase instantaneous undervoltage e...

Page 277: ...27PP see Figure 3 22 27BC BC phase to phase instantaneous undervoltage element BC phase to phase voltage below pickup setting 27PP see Figure 3 22 27CA CA phase to phase instantaneous undervoltage element CA phase to phase voltage below pickup setting 27PP see Figure 3 22 59AB AB phase to phase instantaneous overvoltage element AB phase to phase voltage above pickup setting 59PP see Figure 3 22 59...

Page 278: ... 1 Relay to relay communication see Appendix I MIRRORED BITS 48 TMB8A Channel A transmit bit 8 TMB7A Channel A transmit bit 7 TMB6A Channel A transmit bit 6 TMB5A Channel A transmit bit 5 TMB4A Channel A transmit bit 4 TMB3A Channel A transmit bit 3 TMB2A Channel A transmit bit 2 TMB1A Channel A transmit bit 1 49 RMB8B Channel B received bit 8 RMB7B Channel B received bit 7 RMB6B Channel B receive...

Page 279: ...A received data OK IMPORTANT See Appendix F for special instructions on setting negative sequence overcurrent elements SETTINGS EXPLANATIONS Note that most of the settings in the settings sheets that follow include references for additional information The following explanations are for settings that do not have reference information anywhere else in the instruction manual Identifier Labels Refer ...

Page 280: ...y To convert line impedance W primary to W secondary W primary CTR PTR W secondary where CTR phase IA IB IC current transformer ratio PTR phase VA VB VC potential transformer ratio wye connected Line length setting LL is unitless and corresponds to the line impedance settings For example if a particular line length is 15 miles enter the line impedance values W secondary and then enter the correspo...

Page 281: ...ther ABC or ACB Set DATE_F to format the date displayed in relay reports and the front panel display Set DATE_F to MDY to display dates in Month Day Year format set DATE_F to YMD to display dates in Year Month Day format SETTINGS SHEETS The settings sheets that follow include the definition and input range for each setting in the relay Refer to Relay Element Pickup Ranges and Accuracies in Section...

Page 282: ......

Page 283: ...ondary 1 A nom Z1MAG Positive sequence line impedance angle 5 00 90 00 degrees Z1ANG Zero sequence line impedance magnitude 0 05 255 00 W secondary 5 A nom 0 25 1275 00 W secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Application Settings See Section 14 Application 311B 221F 221F3 221C 221 16 2PG10 APP Distance Settings Mho p...

Page 284: ...splay points N 1 16 Set EDP N if no latches are required EDP Demand Metering THM Thermal ROL Rolling see Figure 8 11 EDEM Advanced settings Y N EADVS Phase Distance Elements Number of mho phase distance element settings dependent on preceding enable setting E21P 1 3 1C 3C Zone 1 OFF 0 05 64 00 W secondary 5 A nom 0 25 320 00 W secondary 1 A nom see Figure 3 3 Z1P Zone 2 OFF 0 05 64 00 W secondary ...

Page 285: ...A secondary 1 A nom see Figure 3 8 50L2 ÝZone 3 phase current FD 0 5 100 00 A secondary 5 A nom 0 1 20 00 A secondary 1 A nom see Figure 3 9 50L3 Zone 1 residual current FD 0 5 100 00 A secondary 5 A nom 0 1 20 00 A secondary 1 A nom see Figure 3 7 50GZ1 ÝZone 2 residual current FD 0 5 100 00 A secondary 5 A nom 0 1 20 00 A secondary 1 A nom see Figure 3 8 50GZ2 ÝZone 3 residual current FD 0 5 100...

Page 286: ...ent on preceding enable setting E50P 1 3 Level 1 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P1P Level 2 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P2P Level 3 OFF 0 25 100 00 A secondary 5 A nom 0 05 20 00 A secondary 1 A nom 50P3P Phase Definite Time Overcurrent Element Time Delays See Figure 3 13 Number of phase element time delay settings depe...

Page 287: ...ite Time Overcurrent Element Time Delay See Figure 3 17 Number of negative sequence element time delay settings dependent on preceding enable setting E50Q 1 3 Level 1 0 00 16000 00 cycles in 0 25 cycle steps 67Q1D Level 2 0 00 16000 00 cycles in 0 25 cycle steps 67Q2D Level 3 0 00 16000 00 cycles in 0 25 cycle steps 67Q3D IMPORTANT See Appendix F for information on setting negative sequence overcu...

Page 288: ...o 90 00 PLAF Negative forward load angle 90 00 to 90 00 NLAF Positive reverse load angle 90 00 to 270 00 PLAR Negative reverse load angle 90 00 to 270 00 NLAR Zone Level 3 Directional Control Zone Level 3 direction Forward Reverse F R DIR3 Directional Elements See Directional Control Settings in Section 4 Make setting ORDER if preceding enable setting E32 Y or AUTO Ground directional element prior...

Page 289: ...enable setting EVOLT Y Phase undervoltage pickup OFF 0 0 150 0 V secondary 27P Phase overvoltage pickup OFF 0 0 150 0 V secondary 59P Channel VS undervoltage pickup OFF 0 0 150 0 V secondary 27SP Channel VS overvoltage pickup OFF 0 0 150 0 V secondary 59SP Phase to phase undervoltage pickup OFF 0 0 260 0 V secondary 27PP Phase to phase overvoltage pickup OFF 0 0 260 0 V secondary 59PP Synchronism ...

Page 290: ...T Y Zone 1 extension delay time 0 00 16000 00 cycles Z1EXTD Zone 1 distance multiplier 1 00 4 00 Z1EXTM Demand Metering Settings See Figures 8 11 and 8 13 Make the following settings whether preceding enable setting EDEM THM or ROL Time constant 5 10 15 30 60 minutes DMTC Phase pickup OFF 0 50 16 00 A secondary 5 A nom 0 10 3 20 A secondary 1 A nom PDEMP Residual ground pickup OFF 0 50 16 00 A sec...

Page 291: ...ime 0 00 16000 00 cycles in 0 25 cycle steps SV7DO SV8 Pickup Time 0 00 16000 00 cycles in 0 25 cycle steps SV8PU SV8 Dropout Time 0 00 16000 00 cycles in 0 25 cycle steps SV8DO SV9 Pickup Time 0 00 16000 00 cycles in 0 25 cycle steps SV9PU SV9 Dropout Time 0 00 16000 00 cycles in 0 25 cycle steps SV9DO SV10 Pickup Time 0 00 16000 00 cycles in 0 25 cycle steps SV10PU SV10 Dropout Time 0 00 16000 0...

Page 292: ...ault trip conditions TRSOTF Direct transfer trip conditions DTT Unlatch trip conditions ULTR Close Logic Equations See Figure 6 1 Circuit breaker status used in Figure 5 3 also 52A Close conditions other than automatic reclosing or CLOSE command CL Unlatch close conditions ULCL Reclosing Relay Equations See Reclosing Relay in Section 6 Reclose initiate 79RI Reclose initiate supervision 79RIS Drive...

Page 293: ...t Latch Bit LT13 RST13 Set Latch Bit LT14 SET14 Reset latch Bit LT14 RST14 Set Latch Bit LT15 SET15 Reset Latch Bit LT15 RST15 Set Latch Bit LT16 SET16 Reset Latch Bit LT16 RST16 Torque Control Equations for Inst Def Time Overcurrent Elements Note torque control equation settings cannot be set directly to logical 0 Level 1 phase see Figure 3 13 67P1TC Level 2 phase see Figure 3 13 67P2TC Level 3 p...

Page 294: ...Control Equation Variable SV6 SV6 SELOGIC Control Equation Variable SV7 SV7 SELOGIC Control Equation Variable SV8 SV8 SELOGIC Control Equation Variable SV9 SV9 SELOGIC Control Equation Variable SV10 SV10 SELOGIC Control Equation Variable SV11 SV11 SELOGIC Control Equation Variable SV12 SV12 SELOGIC Control Equation Variable SV13 SV13 SELOGIC Control Equation Variable SV14 SV14 SELOGIC Control Equa...

Page 295: ... Group 5 SS5 Select Setting Group 6 SS6 Other Equations Event report trigger conditions see Section 12 ER Fault indication used in time target logic see Table 5 1 used also to suspend demand metering updating and peak recording and block max min metering see Demand Metering and Maximum Minimum Metering in Section 8 FAULT Block synchronism check elements see Figure 3 24 BSYNCH Close bus monitor see...

Page 296: ...hannel A transmit bit 6 TMB6A Channel A transmit bit 7 TMB7A Channel A transmit bit 8 TMB8A Channel B transmit bit 1 TMB1B Channel B transmit bit 2 TMB2B Channel B transmit bit 3 TMB3B Channel B transmit bit 4 TMB4B Channel B transmit bit 5 TMB5B Channel B transmit bit 6 TMB6B Channel B transmit bit 7 TMB7B Channel B transmit bit 8 TMB8B ...

Page 297: ...vent Report Parameters See Section 12 Length of event report 15 30 60 180 cycles LER Length of pre fault in event report 1 14 cycles in 1 cycle steps for LER 15 PRE 1 29 cycles in 1 cycle steps for LER 30 1 59 cycles in 1 cycle steps for LER 60 1 179 cycles in 1 cycle steps for LER 180 Station DC Battery Monitor See Figures 8 9 and 8 10 DC battery instantaneous undervoltage pickup OFF 20 300 Vdc D...

Page 298: ...lowing settings if preceding enable setting EBMON Y Close Open set point 1 max 0 65000 operations COSP1 Close Open set point 2 mid 0 65000 operations COSP2 Close Open set point 3 min 0 65000 operations COSP3 kA Interrupted set point 1 min 0 00 999 00 kA primary in 0 01 kA steps KASP1 kA Interrupted set point 2 mid 0 00 999 00 kA primary in 0 01 kA steps KASP2 kA Interrupted set point 3 max 0 00 99...

Page 299: ...05 Sequential Events Recorder settings are comprised of three trigger lists Each trigger list can include up to 24 Relay Word bits delimited by commas Enter NA to remove a list of these Relay Word bit settings See Sequential Events Recorder SER Report in Section 12 SER Trigger List 1 SER1 SER Trigger List 2 SER2 SER Trigger List 3 SER3 ...

Page 300: ...Local Bit LB3 Name 14 characters NLB3 Clear Local Bit LB3 Label 7 characters CLB3 Set Local Bit LB3 Label 7 characters SLB3 Pulse Local Bit LB3 Label 7 characters PLB3 Local Bit LB4 Name 14 characters NLB4 Clear Local Bit LB4 Label 7 characters CLB4 Set Local Bit LB4 Label 7 characters SLB4 Pulse Local Bit LB4 Label 7 characters PLB4 Local Bit LB5 Name 14 characters NLB5 Clear Local Bit LB5 Label ...

Page 301: ... characters NLB11 Clear Local Bit LB11 Label 7 characters CLB11 Set Local Bit LB11 Label 7 characters SLB11 Pulse Local Bit LB11 Label 7 characters PLB11 Local Bit LB12 Name 14 characters NLB12 Clear Local Bit LB12 Label 7 characters CLB12 Set Local Bit LB12 Label 7 characters SLB12 Pulse Local Bit LB12 Label 7 characters PLB12 Local Bit LB13 Name 14 characters NLB13 Clear Local Bit LB13 Label 7 c...

Page 302: ...s DP4_1 Display if DP4 logical 0 16 characters DP4_0 Display if DP5 logical 1 16 characters DP5_1 Display if DP5 logical 0 16 characters DP5_0 Display if DP6 logical 1 16 characters DP6_1 Display if DP6 logical 0 16 characters DP6_0 Display if DP7 logical 1 16 characters DP7_1 Display if DP7 logical 0 16 characters DP7_0 Display if DP8 logical 1 16 characters DP8_1 Display if DP8 logical 0 16 char...

Page 303: ...l 0 16 characters DP14_0 Display if DP15 logical 1 16 characters DP15_1 Display if DP15 logical 0 16 characters DP15_0 Display if DP16 logical 1 16 characters DP16_1 Display if DP16 logical 0 16 characters DP16_0 Reclosing Relay Labels See Functions Unique to the Front Panel Interface in Section 11 Reclosing Relay Last Shot Label 14 char 79LL Reclosing Relay Shot Counter Label 14 char 79SL ...

Page 304: ...1 2 STOP Other Port Settings See Below Time out 0 30 minutes T_OUT DTA Meter Format Y N DTA Send Auto Messages to Port Y N AUTO Enable Hardware Handshaking Y N MBT RTSCTS Fast Operate Enable Y N FASTOP Other Port Settings Set T_OUT to the number of minutes of serial port inactivity for an automatic log out Set T_OUT 0 for no port time out Set DTA Y to allow an SEL DTA or SEL DTA2 to communicate wi...

Page 305: ... Level 1 10 9 Access Level B 10 9 Access Level 2 10 10 Command Summary 10 10 Command Explanations 10 12 Access Level 0 Commands 10 12 Access Level 1 Commands 10 14 Access Level B Commands 10 32 Access Level 2 Commands 10 36 SEL 311B Relay Command Summary 10 39 TABLES Table 10 1 Pinout Functions for EIA 232 Serial Ports 2 3 and F 10 2 Table 10 2 Terminal Functions for EIA 485 Serial Port 1 10 2 Tab...

Page 306: ......

Page 307: ...l Procomm Plus Relay Gold and SmartCOM For the best display use VT 100 terminal emulation or the closest variation The default settings for all serial ports are Baud Rate 2400 Data Bits 8 Parity N Stop Bits 1 To change the port settings use the SET P command see Section 9 Setting the Relay or the front panel SET pushbutton PORT CONNECTOR AND COMMUNICATIONS CABLES Figure 10 1 DB 9 Connector Pinout ...

Page 308: ... Table 10 2 Terminal Functions for EIA 485 Serial Port 1 Terminal Function 1 TX 2 TX 3 RX 4 RX 5 SHIELD 6 N C 7 IRIG B 8 IRIG B The following cable diagrams show several types of EIA 232 serial communications cables that connect the SEL 311B Relay to other devices SEL provides fiber optic transceivers and cable for communications links with improved safety noise immunity and distance as compared t...

Page 309: ...ND 5 5 GND CTS 8 8 CTS 7 RTS 1 DCD 4 DTR 6 DSR Cable C227A SEL 311B Relay 25 Pin DTE Device 9 Pin Male 25 Pin Female D Subconnector D Subconnector GND 5 7 GND TXD 3 3 RXD RXD 2 2 TXD GND 9 1 GND CTS 8 4 RTS 5 CTS 6 DSR 8 DCD 20 DTR SEL 311B to Modem or Other DCE Cable C222 SEL 311B Relay DCE Device 9 Pin Male 25 Pin Male D Subconnector D Subconnector GND 5 7 GND TXD 3 2 TXD IN RTS 7 20 DTR IN RXD ...

Page 310: ...D IRIG 6 6 IRIG RTS 7 8 CTS CTS 8 7 RTS DTE Data Terminal Equipment Computer Terminal Printer etc DCE Data Communications Equipment Modem etc SEL 311B to SEL DTA2 Cable C272A SEL DTA2 SEL 311B Relay 9 Pin Male 9 Pin Male D Subconnector D Subconnector RXD 2 3 TXD TXD 3 2 RXD GND 5 5 GND RTS 7 7 RTS CTS 8 8 CTS SEL 311B to SEL PRTU Cable C231 SEL PRTU SEL 311B Relay 9 Pin Male 9 Pin Male Round Conxa...

Page 311: ...orts support RTS CTS hardware handshaking RTS CTS handshaking is not supported on the EIA 485 Serial Port 1 To enable hardware handshaking use the SET P command or front panel SET pushbutton to set RTSCTS Y Disable hardware handshaking by setting RTSCTS N If RTSCTS N the relay permanently asserts the RTS line If RTSCTS Y the relay deasserts RTS when it is unable to receive characters If RTSCTS Y t...

Page 312: ...ASCII code to the relay 2 The relay transmits all messages in the following format STX MESSAGE LINE 1 CRLF MESSAGE LINE 2 CRLF LAST MESSAGE LINE CRLF ETX Each message begins with the start of transmission character ASCII 02 and ends with the end of transmission character ASCII 03 Each line of the message ends with a carriage return and line feed 3 The relay implements XON XOFF flow control The rel...

Page 313: ...ore information on SEL Distributed Port Switch Protocol LMD SEL Fast Meter Protocol SEL Fast Meter protocol supports binary messages to transfer metering and control messages The protocol is described in Appendix D SEL Compressed ASCII Protocol SEL Compressed ASCII protocol provides compressed versions of some of the relay ASCII commands The protocol is described in Appendix E Distributed Network ...

Page 314: ... Y the AUTO setting is hidden and forced to Y With DTA set to Y the SEL 311B Relay is compatible with the SEL DTA2 Display Transducer Adapter SERIAL PORT ACCESS LEVELS Commands can be issued to the relay via the serial port to view metering values change relay settings etc The available serial port commands are listed in Table 10 5 The commands can be accessed only from the corresponding access le...

Page 315: ...the relay to go to Access Level 2 Enter the 2AC command at the Access Level 1 prompt 2AC ENTER The BAC command allows the relay to go to Access Level B Enter the BAC command at the Access Level 1 prompt BAC ENTER Access Level B When the relay is in Access Level B the relay sends the prompt Commands BRE n through PUL in Table 10 5 are available from Access Level B For example enter the CLO command ...

Page 316: ...ial port commands is also available via the front panel pushbuttons The correspondence between the serial port commands and the front panel pushbuttons is also given in Table 10 5 See Section 11 Front Panel Interface for more information on the front panel pushbuttons The serial port commands at the different access levels offer varying levels of control The Access Level 1 commands primarily allow...

Page 317: ...MET Metering data METER 1 SER Sequential Events Recorder 1 SHO Show view settings SET 1 STA Relay self test status STATUS 1 SUM Display Event Summary EVENTS 1 TAR Display relay element status OTHER 1 TIM View change time OTHER 1 TRI Trigger an event report B BRE n Preload reset breaker wear OTHER B CLO Close breaker B GRO n Change active setting group GROUP B OPE Open breaker B PUL Pulse output co...

Page 318: ...y by changing the DATE_F relay setting Time This is the time the command response was given except for relay response to the EVE or SUM command where it is the time the event occurred The serial port command explanations that follow in the Command Explanations subsection are in the same order as the commands listed in Table 10 5 COMMAND EXPLANATIONS Access Level 0 Commands ACC Command Go to Access...

Page 319: ...el 0 At the Access Level 0 prompt enter the ACC command ACC ENTER Because the Password jumper is not in place the relay asks for the Access Level 1 password to be entered Password The relay is shipped with the default Access Level 1 password OTTER Enter the default password Password OTTER ENTER The relay responds SEL 311B Date 08 18 00 Time 16 22 04 372 EXAMPLE BUS B BREAKER 3 Level 1 The prompt i...

Page 320: ... much the same with command BAC or 2AC entered at the access level screen prompt The relay closes the ALARM contact for one second after a successful Level B or Level 2 access If access is denied the ALARM contact closes for one second Access Level 1 Commands 2AC and BAC Commands See previous discussion on passwords BRE Command Breaker Monitor Data Use the BRE command to view the breaker monitor r...

Page 321: ... the channel specifier may be omitted Use the L parameter to get a summary report followed by a listing of the COMM records COM L ENTER COM L ENTER COM L ENTER COM L ENTER SEL 311B Date 08 22 00 Time 16 24 01 623 EXAMPLE BUS B BREAKER 3 FID SEL 311B R100 V0 Z001001 D20000818 CID F30B Summary for Mirrored Bits channel A For 08 18 00 17 18 12 993 to 08 21 00 18 37 36 123 Total failures 4 Last error ...

Page 322: ... the internal calendar clock If the date format setting DATE_F is set to MDY the date is displayed as month day year If the date format setting DATE_F is set to YMD the date is displayed as year month day To set the date type DAT mm dd yy ENTER if the DATE_F setting is MDY If the DATE_F is set to YMD enter DAT yy mm dd ENTER To set the date to August 1 2000 enter when DATE_F MDY DAT 8 1 00 ENTER D...

Page 323: ...rom nonvolatile memory The event summaries include the date and time the event was triggered the type of event the fault location the maximum phase current in the event the power system frequency the number of the active setting group the reclose shot count and the front panel targets To display the relay event summaries enter the following command HIS ENTER HIS ENTER HIS ENTER HIS ENTER SEL 311B ...

Page 324: ...T column is one of the following TRIP event report generated by assertion of Relay Word bit TRIP ER event report generated by assertion of SELOGIC control equation event report trigger setting ER PULSE event report generated by execution of the PUL Pulse command TRIG event report generated by execution of the TRI Trigger command The TARGETS column will display any of the following illuminated fron...

Page 325: ...ge energy demand and maximum minimum logging of selected quantities To make the extensive amount of meter information manageable the relay divides the displayed information into four groups Instantaneous Demand Energy and Maximum Minimum MET k Instantaneous Metering The MET k command displays instantaneous magnitudes and angles if applicable of the following quantities Currents IA B C P IG Input c...

Page 326: ...14 198 090 0 302 4 880 I ANG DEG 8 03 128 02 111 89 52 98 81 22 A B C S V MAG KV 11 691 11 686 11 669 11 695 V ANG DEG 0 00 119 79 120 15 0 05 A B C 3P MW 2 259 2 228 2 288 6 774 MVAR 0 319 0 322 0 332 0 973 PF 0 990 0 990 0 990 0 990 LAG LAG LAG LAG I1 3I2 3I0 V1 V2 3V0 MAG 195 283 4 630 4 880 11 682 0 007 0 056 ANG DEG 8 06 103 93 81 22 0 12 80 25 65 83 FREQ Hz 60 00 VDC V 129 5 MET D Demand Met...

Page 327: ...tion on demand metering see Demand Metering in Section 8 Breaker Monitor and Metering Functions MET E Energy Metering The MET E command displays the following quantities Energy MWhA B C MWh3P MVARhA B C MVARh3P Single phase megawatt hours in and out Three phase megawatt hours in and out Single phase megavar hours in and out Three phase megavar hours in and out Reset Time Last time the energy meter...

Page 328: ... 10 00 15 05 19 558 31 8 08 10 00 14 50 55 536 IC A 200 4 08 10 00 15 00 42 578 52 2 08 10 00 14 51 02 332 IP A 42 6 08 10 00 14 51 02 328 42 6 08 10 00 14 51 02 328 IG A 42 0 08 10 00 14 50 55 294 42 0 08 10 00 14 50 55 294 VA kV 11 7 08 10 00 15 01 01 576 3 4 08 10 00 15 00 42 545 VB kV 11 7 08 10 00 15 00 42 937 2 4 08 10 00 15 00 42 541 VC kV 11 7 08 10 00 15 00 42 578 3 1 08 10 00 15 00 42 54...

Page 329: ...ngs and text label settings Below are the SHO command options SHO n Show relay settings n specifies the setting group 1 2 3 4 5 or 6 n defaults to the active setting group if not listed SHO L n Show SELOGIC control equation settings n specifies the setting group 1 2 3 4 5 or 6 n defaults to the active setting group if not listed SHO G Show global settings SHO P n Show serial port settings n specif...

Page 330: ...25 N EFLOC Y ELOP Y E79 N EZ1EXT N ECCVT N ESV N ELAT 16 EDP 16 EDEM THM EADVS N Z1P 6 24 Z2P 9 36 Z3P 1 87 50PP1 0 50 Z1MG 6 24 Z2MG 9 36 Z3MG 1 87 50L1 0 50 Press RETURN to continue 50GZ1 0 50 k0M1 0 726 k0A1 3 69 Z1PD OFF Z2PD 20 00 Z3PD OFF Z1GD OFF Z2GD 20 00 Z3GD OFF Z1D OFF Z2D OFF Z3D OFF 50P1P 11 25 67P1D 0 00 51GP 0 75 51GC U3 51GTD 2 00 51GRS Y 51QP 2 20 51QC U3 51QTD 2 00 51QRS N ZLF 9...

Page 331: ...A IN101 CL CC ULCL TRIP SET1 0 RST1 0 SET2 0 RST2 0 SET3 0 RST3 0 SET4 0 RST4 0 SET5 0 RST5 0 Press RETURN to continue SET6 0 RST6 0 SET7 0 RST7 0 SET8 0 RST8 0 SET9 0 RST9 0 SET10 0 RST10 0 SET11 0 RST11 0 SET12 0 RST12 0 SET13 0 RST13 0 SET14 0 RST14 0 SET15 0 RST15 0 Press RETURN to continue SET16 0 RST16 0 67P1TC 1 51GTC 1 51QTC 1 OUT101 TRIP OUT102 TRIP OUT103 CLOSE OUT104 0 OUT105 0 OUT106 0...

Page 332: ...SHO G ENTER Global Settings TGR 180 00 NFREQ 60 PHROT ABC DATE_F MDY FP_TO 15 00 SCROLD 5 LER 15 PRE 4 DCLOP OFF DCHIP OFF IN101D 0 00 IN102D 0 00 IN103D 0 00 IN104D 0 00 IN105D 0 00 IN106D 0 00 EBMON N SHO P ENTER SHO P ENTER SHO P ENTER SHO P ENTER Port F PROTO SEL SPEED 2400 BITS 8 PARITY N STOP 1 T_OUT 15 DTA N AUTO Y RTSCTS N FASTOP N SHO R ENTER SHO R ENTER SHO R ENTER SHO R ENTER Sequential...

Page 333: ...LB7 PLB7 NLB8 CLB8 SLB8 PLB8 NLB9 CLB9 SLB9 PLB9 NLB10 CLB10 SLB10 PLB10 NLB11 CLB11 SLB11 PLB11 NLB12 CLB12 SLB12 PLB12 NLB13 CLB13 SLB13 PLB13 NLB14 CLB14 SLB14 PLB14 NLB15 CLB15 SLB15 PLB15 NLB16 CLB16 SLB16 PLB16 DP1_1 BREAKER CLOSED DP1_0 BREAKER OPEN Press RETURN to continue DP2_1 DP2_0 DP3_1 DP3_0 DP4_1 DP4_0 DP5_1 DP5_0 DP6_1 DP6_0 DP7_1 DP7_0 DP8_1 DP8_0 DP9_1 DP9_0 DP10_1 DP10_0 DP11_1 D...

Page 334: ...S 15V_PS PS 4 92 4 98 5 02 11 87 11 98 14 89 14 95 TEMP RAM ROM A D CR_RAM EEPROM IO_BRD 28 1 OK OK OK OK OK N A Relay Enabled STA Command Row and Column Definitions FID FID is the firmware identifier string It identifies the firmware revision CID CID is the firmware checksum identifier OS OS Offset displays measured dc offset voltages in millivolts for the current and voltage channels The MOF mas...

Page 335: ...fore the relay is enabled Refer to Section 13 Testing and Troubleshooting for self test thresholds in Table 13 1 and corrective actions SUM Command Long Summary Event Report The SUM command displays a long summary event report see TRI Command below The long summary event report is displayed on all ports with AUTO Y whenever an event is generated To view a summary event report enter the command SUM...

Page 336: ...d via the front panel display does remap the bottom row of the front panel target LEDs see Figure 11 3 pushbutton OTHER The TAR command options are TAR n k Shows Relay Word row number n 0 51 k is an optional parameter to specify the number of times 1 32767 to repeat the Relay Word row display If k is not specified the Relay Word row is displayed once TAR name k Shows Relay Word row containing Rela...

Page 337: ...is in the Lockout State 79LO logical 1 and the shot is at shot 2 SH2 logical 1 Command TAR 31 will report the same data since the SH1 bit is in Row 31 of the Relay Word TIM Command View Change Time TIM displays the relay clock To set the clock type TIM and the desired setting then press ENTER Separate the hours minutes and seconds with colons semicolons spaces commas or slashes To set the clock to...

Page 338: ...ee Section 12 Standard Event Reports and SER for more information on event reports Recall this event summary with the SUM command Access Level B Commands BRE n Command Preload Reset Breaker Wear Use the BRE W command to preload breaker monitor data BRE W ENTER BRE W ENTER BRE W ENTER BRE W ENTER Breaker Wear Preload Internal Trips 0 65000 ITRIP 0 11 ENTER 11 ENTER 11 ENTER 11 ENTER Internal Curren...

Page 339: ...0 LAST RESET 08 18 00 05 41 07 See Breaker Monitor in Section 8 Breaker Monitor and Metering Functions for further details on the breaker monitor CLO Command Close Breaker The CLO command asserts Relay Word bit CC for 1 4 cycle Relay Word bit CC can then be programmed into the SELOGIC control equation CL to assert the CLOSE Relay Word bit which in turn asserts an output contact e g OUT102 CLOSE to...

Page 340: ...SELOGIC control equation settings SS1 through SS6 are asserted to logical 1 the active setting group may not be change with the GRO command SELOGIC control equations settings SS1 through SS6 have priority over the GRO command in active setting group control For example assume setting Group 1 is the active setting group and the SS1 setting is asserted to logical 1 e g SS1 IN101 and optoisolated inp...

Page 341: ...Command Pulse Output Contact The PUL command allows you to pulse any of the output contacts for a specified length of time The command format is PUL x y where x is the output name e g OUT101 OUT107 ALARM see Figure 7 26 y is the pulse duration 1 30 seconds If y is not specified the pulse duration defaults to 1 second To pulse OUT101 for 5 seconds PUL OUT101 5 ENTER PUL OUT101 5 ENTER PUL OUT101 5 ...

Page 342: ...relay responds Invalid Command Table 10 8 SEL 311B Relay Control Subcommands Subcommand Description SRB n Set Remote Bit n ON position CRB n Clear Remote Bit n OFF position PRB n Pulse Remote Bit n for 1 4 cycle MOMENTARY position See Remote Control Switches in Section 7 Inputs Outputs Timers and Other Control Logic for more information COP m n Command Copy Setting Group Copy relay and SELOGIC con...

Page 343: ... default values while loopback is enabled Are you sure Y N If only one MIRRORED BITS port is enabled the channel specifier may be omitted To enable looped back mode for other than the default 5 minutes enter the desired number of minutes 1 5000 as a command parameter To allow the looped back data to modify the RMB values include the DATA parameter LOO 10 DATA ENTER LOO 10 DATA ENTER LOO 10 DATA EN...

Page 344: ... Upper and lower case letters are treated as different characters Examples of valid distinct passwords include OTTER otter Ot3456 TAIL 123456 12345 12345 If the passwords are lost or you wish to operate the relay without password protection put the main board Password jumper in place Password jumper ON Refer to Table 2 4 for Password jumper information If you wish to disable password protection fo...

Page 345: ...Format setting DATE_F MDY DAT y m d Enter date in this manner if Date Format setting DATE_F YMD EVE n Show event report number n with 1 4 cycle resolution EVE L n Show event report number n with 1 16 cycle resolution EVE R n Show raw event report number n with 1 16 cycle resolution EVE C n Show compressed event report number n for use with SEL 5601 Analytic Assistant GRO Display active group numbe...

Page 346: ...sion following Table 6 1 for more information concerning the OPE command PUL n k Pulse output contact n OUT101 OUT107 ALARM for k 1 30 seconds Parameter n must be specified k defaults to 1 if not specified Access Level 2 Commands The Access Level 2 commands allow unlimited access to relay settings parameters and output contacts All Access Level 1 and Access Level B commands are available from Acce...

Page 347: ... State Retained When Relay Deenergized 11 11 Rotating Default Display 11 11 Scroll Lock Control of Front Panel LCD 11 14 Stop Scrolling Lock 11 15 Restart Scrolling Unlock 11 15 Single Step 11 15 Exit 11 15 Cancel 11 15 Additional Rotating Default Display Example 11 15 FIGURES Figure 11 1 SEL 311B Relay Front Panel Pushbuttons Overview 11 1 Figure 11 2 SEL 311B Relay Front Panel Pushbuttons Primar...

Page 348: ......

Page 349: ...secondary A primary function is selected first e g METER pushbutton After a primary function is selected the pushbuttons revert to operating on their secondary functions CANCEL SELECT left right arrows up down arrows EXIT For example after the METER pushbutton is pressed the up down arrows are used to scroll through the front panel metering screens The primary functions are activated again when th...

Page 350: ...Command Metering Data in Section 10 Some of the front panel primary functions do not have serial port command equivalents These are discussed in the following subsection Functions Unique to the Front Panel Interface Figure 11 2 SEL 311B Relay Front Panel Pushbuttons Primary Functions Front Panel Password Security Refer to the comments at the bottom of Figure 11 3 concerning Access Level B and Acce...

Page 351: ... with LCD 11 3 SEL 311B Instruction Manual The factory default passwords for Access Level 1 B and 2 are Access Level Factory Default Password 1 OTTER B EDITH 2 TAIL See Table 2 4 Figure 11 3 SEL 311B Relay Front Panel Pushbuttons Primary Functions Continued ...

Page 352: ...red function Then press the SELECT pushbutton to select the function Use left right arrows to underscore a desired setting digit Then use the up down arrows to change the digit After the setting changes are complete press the SELECT pushbutton to select enable the setting Press the CANCEL pushbutton to abort a setting change procedure and return to the previous display Press the EXIT pushbutton to...

Page 353: ...Date Code 20011205 Front Panel Interface Only on Models with LCD 11 5 SEL 311B Instruction Manual Figure 11 4 SEL 311B Relay Front Panel Pushbuttons Secondary Functions ...

Page 354: ...th demonstration settings SET RECLOSURES 2 RECLOSE COUNT 0 If the reclosing relay doesn t exist see Reclosing Relay in Section 6 Close and Reclose Logic the following screen appears No Reclosing set The corresponding text label settings shown with example settings are 79LL SET RECLOSURES Last Shot Label limited to 14 characters 79SL RECLOSE COUNT Shot Counter Label limited to 14 characters If 79LL...

Page 355: ...es to the reclose cycle state front panel CY LED illuminated The reclosing relay shot counter screen still appears as SET RECLOSURES 2 RECLOSE COUNT 0 The first open interval 79OI1 30 times out the shot counter increments from 0 to 1 and the relay recloses the breaker The reclosing relay shot counter screen shows the incremented shot counter SET RECLOSURES 2 RECLOSE COUNT 1 The relay trips the bre...

Page 356: ...sable schemes trip close breakers etc via the front panel In more specific terms local control asserts sets to logical 1 or deasserts sets to logical 0 what are called local bits LB1 through LB16 These local bits are available as Relay Word bits and are used in SELOGIC control equations see Rows 5 and 6 in Table 9 3 and Table 9 4 Local control can emulate the following switch types in Figure 11 5 ...

Page 357: ...el settings were made the following message displays with the rotating default display messages Press CNTRL for Local Control Assume the following settings TR LB3 Trip setting includes LB3 CL LB4 Close setting includes LB4 NLB3 MANUAL TRIP CLB3 RETURN PLB3 TRIP NLB4 MANUAL CLOSE CLB4 RETURN PLB4 CLOSE Press the CNTRL pushbutton and the first set local control switch displays MANUAL TRIP Position R...

Page 358: ...TRIP Position TRIP Because this is an OFF MOMENTARY type switch the MANUAL TRIP switch returns to the RETURN position after momentarily being in the TRIP position Technically the MANUAL TRIP switch being an OFF MOMENTARY type switch is in the TRIP position for one processing interval 1 4 cycle long enough to assert the corresponding local bit LB3 to logical 1 and then returns to the RETURN positio...

Page 359: ...d to enable disable reclosing If local bit LB1 is at logical 1 reclosing is enabled If power to the relay is turned off and then turned on again local bit LB1 remains at logical 1 and reclosing is still enabled This is akin to a traditional panel where enabling disabling of reclosing and other functions is accomplished by panel mounted switches If dc control voltage to the panel is lost and then r...

Page 360: ...SABLED and BREAKER OPEN are enabled for display they also enter into the display rotation display time SCROLD The following table and figures demonstrate the correspondence between changing display point states e g DP2 and DP4 and enabled display point labels DP2_1 DP2_0 and DP4_1 DP4_0 respectively The display time is equal to global setting SCROLD for each screen The display point example settin...

Page 361: ...tates Display Point Label Settings DP2 LB1 DP4 IN101 logical 0 logical 0 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN DP2 LB1 DP4 IN101 logical 1 logical 0 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN DP2 LB1 DP4 IN101 logical 1 logical 1 DP2_1 79 ENABLED DP2_0 79 DISABLED DP4_1 BREAKER CLOSED DP4_0 BREAKER OPEN ...

Page 362: ...oint label settings are set with the SET T command or viewed with the SHO T command via the serial port see Section 9 Setting the Relay and SHO Command Show View Settings in Section 10 Serial Port Communications and Commands For more detailed information on the logic behind the rotating default display see Rotating Default Display in Section 7 Inputs Outputs Timers and Other Control Logic Scroll L...

Page 363: ...ck ON SELECT to Unlock Restart Scrolling Unlock The SELECT key unlocks the LCD and resumes the rotating display Single Step From the Scroll Locked state single step through the display screens by pressing the SELECT key twice Wait for the first press to display the next screen as the active display then press the SELECT key a second time to freeze scrolling Exit Press the EXIT key to leave Scroll ...

Page 364: ......

Page 365: ...9 SER Triggering 12 29 Making SER Trigger Settings 12 29 Retrieving SER Reports 12 30 Clearing SER Report 12 31 Example Sequential Events Recorder SER Report 12 31 TABLES Table 12 1 Event Types 12 5 Table 12 2 Standard Event Report Current Voltage and Frequency Columns 12 9 Table 12 3 Output Input and Protection and Control Element Event Report Columns 12 10 Table 12 4 Communication Elements Event...

Page 366: ......

Page 367: ...a programmable condition The SER lists date and time stamped lines of information each time a programmed condition changes state The relay stores the latest 512 lines of the SER report in nonvolatile memory If the report fills up newer rows overwrite the oldest rows in the report See Figure 12 5 for an example SER report STANDARD 15 30 60 180 CYCLE EVENT REPORTS See Figure 12 2 for an example even...

Page 368: ...ker e g SELOGIC control equation setting OUT101 TRIP Programmable SELOGIC Control Equation Setting ER The programmable SELOGIC control equation event report trigger setting ER is set to trigger standard event reports for conditions other than trip conditions When setting ER sees a logical 0 to logical 1 transition it generates an event report if the SEL 311B Relay is not already generating a repor...

Page 369: ... for testing purposes The PUL command asserts the output contacts for testing purposes or for remote control If output contact OUT101 through OUT107 asserts via the PUL command the relay triggers a standard event report The PUL command is available at the serial port and the relay front panel CNTRL pushbutton See Section 10 Serial Port Communications and Commands and Section 11 Front Panel Interfa...

Page 370: ... 131 730 ANG DEG 0 04 120 27 120 04 59 15 149 15 165 15 0 00 120 03 119 94 Fault MAG A kV 200 2478 2480 0 212 4294 131 570 113 930 113 980 ANG DEG 0 46 172 34 6 65 59 15 11 30 94 15 0 73 123 36 124 67 L C R L C R B B B R B B B R O A A O O A A O K D D K K D D K MB 8 1 RMBA TMBA RMBB TMBB A A A A B B B B TRIG 00000000 00000000 00000000 00000000 0 0 0 0 0 0 0 0 TRIP 00000000 00000000 00000000 0000000...

Page 371: ...e fault locator does not operate successfully just TRIP or ER is displayed Fault Location The relay reports the fault location if setting EFLOC Y and the fault locator operates successfully after an event report is generated If the fault locator does not operate successfully or if EFLOC N is listed in the field Fault location is based upon the line impedance settings Z1MAG Z1ANG Z0MAG and Z0ANG an...

Page 372: ...e stored in nonvolatile memory Each event report includes five sections Current voltage station battery and V1Mem Protection elements contact outputs and optoisolated inputs MIRRORED BITS and SELOGIC control equation elements Event summary Group SELOGIC control equations and global settings Use the EVE command to retrieve the reports There are several options to customize the report format The gen...

Page 373: ...l data are unfiltered raw EVE 2 D L10 Display 10 cycles of the protection and contact I O elements section of the second event report at 1 4 cycle resolution EVE 2 A R S4 Display the unfiltered analog section of the second event report at 1 4 cycle resolution If an event report is requested that does not exist the relay responds Invalid Event Compressed ASCII Event Reports The SEL 311B Relay provi...

Page 374: ...onvolatile memory See Section 10 Serial Port Communications and Commands for more information on the HIS Event Summaries History command Standard Event Report Column Definitions Refer to the example event report in Figure 12 2 to view event report columns Note Figure 12 2 is on multiple pages This example event report displays rows of information each 1 4 cycle and was retrieved with the EVE comma...

Page 375: ...dual current IG 3I0 IA IB IC primary A VA Voltage measured by channel VA primary kV VB Voltage measured by channel VB primary kV VC Voltage measured by channel VC primary kV VS Voltage measured by channel VS primary kV Vdc Voltage measured at power input terminals Z25 and Z26 Vdc V1Mem Positive sequence memory voltage primary kV Output Input Protection and Control Columns Table 12 3 summarizes the...

Page 376: ... 1 phase phase distance element MPP1 set If Zone 2 phase phase distance element MPP2 set not ZPP1 If Zone 3 phase phase distance element MPP2 set not ZPP1 or ZPP2 ZBC1 MBC1 MBC2 MBC3 1 2 3 If Zone 1 BC phase phase distance element MBC1 set If Zone 2 BC phase phase distance element MBC2 set not ZBC1 If Zone 3 BC phase phase distance element MBC3 set not ZBC1 or ZBC2 Z 3P2 MABC1 MABC2 MABC3 1 2 3 If...

Page 377: ...2 CG element XCG2 or MCG2 set not ZCG1 If Zone 3 CG element XCG3 or MCG3 set not ZCG1 or ZCG2 VPOL VPOLV V VPOLV asserted 51 P 51P 51PT 51PR p Time overcurrent element picked up and timing 51 G 51G 51GT 51GR T Time overcurrent element timed out 51 Q 51Q 51QT 51QR r Time overcurrent element timing to reset 1 Time overcurrent element timing to reset after having timed out when element reset is set f...

Page 378: ... zero sequence ground directional element R32V picked up F32I I Forward current polarized ground directional element F32I picked up R32I i Reverse current polarized ground directional element R32I picked up 67P 1 2 67P1 67P2 1 2 b 67P1 asserted 67P2 asserted both 67P1 and 67P2 asserted 67P 3 67P3 3 67P3 asserted 67G 1 2 67G1 67G2 1 2 b 67G1 asserted 67G2 asserted both 67G1 and 67G2 asserted 67G 3 ...

Page 379: ...nstantaneous undervoltage element 27AB picked up B BC phase to phase instantaneous undervoltage element 27BC picked up C CA phase to phase instantaneous undervoltage element 27CA picked up a 27AB and 27CA elements picked up b 27AB and 27BC elements picked up c 27BC and 27CA elements picked up 3 27AB 27BC and 27CA elements picked up 27 S 27S Channel VS instantaneous undervoltage element 27S picked ...

Page 380: ...s overvoltage element 59S picked up 25 59 V 59VP 59VS P Phase voltage window element 59VP picked up used in synchronism check S Channel VS voltage window element 59VS picked up used in synchronism check b Both 59VP and 59VS picked up 25 SF SF Slip frequency element SF picked up used in synchronism check 25 A 25A1 25A2 1 First synchronism check element 25A1 picked up 2 Second synchronism check elem...

Page 381: ...ss of potential element LOP picked up Vdc DCHI DCLO H Station battery instantaneous overvoltage element DCHI picked up L Station battery instantaneous undervoltage element DCLO picked up b Both DCHI and DCLO asserted Out1 1 2 OUT101 OUT102 1 2 b Output contact OUT101 asserted Output contact OUT102 asserted Both OUT101 and OUT102 asserted Out1 3 4 OUT103 OUT104 3 4 b Output contact OUT103 asserted ...

Page 382: ... mho elements are enabled E21P does not contain C 2 This column is visible only when compensator distance mho elements are enabled E21P contains C Table 12 4 Communication Elements Event Report Columns Column Heading Corresponding Elements Relay Word Bits Symbol Definition 3PO 3PO Three pole open condition 3PO asserted SOTF SOTF Switch onto fault condition SOTF asserted TMB A 1 2 TMB1A TMB2A 1 MIR...

Page 383: ...A asserted RMB A 5 6 RMB5A RMB6A 5 MIRRORED BITS channel A receive bit 5 RMB5A asserted 6 MIRRORED BITS channel A receive bit 6 RMB6A asserted b Both RMB5A and RMB6A asserted RMB A 7 8 RMB7A RMB8A 7 MIRRORED BITS channel A receive bit 7 RMB7A asserted 8 MIRRORED BITS channel A receive bit 8 RMB8A asserted b Both RMB7A and RMB8A asserted TMB B 1 2 TMB1B TMB2B 1 MIRRORED BITS channel B transmit bit ...

Page 384: ...h RMB3B and RMB4B asserted RMB B 5 6 RMB5B RMB6B 5 MIRRORED BITS channel B receive bit 5 RMB5B asserted 6 MIRRORED BITS channel B receive bit 6 RMB6B asserted b Both RMB5B and RMB6B asserted RMB B 7 8 RMB7B RMB8B 7 MIRRORED BITS channel B receive bit 7 RMB7B asserted 8 MIRRORED BITS channel B receive bit 8 RMB8B asserted b Both RMB7B and RMB8B asserted ROK ROKA ROKB A MIRRORED BITS channel A recei...

Page 385: ...value of Relay Word 9 LT1 LT8 Latch Bits Ltch RW 10 LT9 LT16 00 FF Hex Hex value of Relay Word 10 LT9 LT16 Latch Bits SELOGIC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SV1 SV1T SV2 SV2T SV3 SV3T SV4 SV4T SV5 SV5T SV6 SV6T SV7 SV7T SV8 SV8T SV9 SV9T SV10 SV10T SV11 SV11T SV12 SV12T SV13 SV13T SV14 SV14T SV15 SV15T SV16 SV16T p T d SELOGIC control equation variable timer input SV_ asserted timer timing...

Page 386: ...owing the V1Mem column identifies the trigger row This is the row that corresponds to the Date and Time values at the top of the event report The asterisk in the column following the V1Mem column identifies the row corresponding to the fault values listed in the event summary report See Currents and Voltages on page 12 6 The phase current is calculated from the row identified with the asterisk and...

Page 387: ...171 1945 1975 0 201 112 4 5 5 103 5 112 7 24 107 3 6 104 1533 1500 1 71 68 4 113 8 47 7 68 3 24 64 8 170 1945 1973 0 198 112 4 5 4 103 6 112 7 24 106 1 105 1533 1503 1 75 68 4 113 8 47 7 68 4 24 64 2 172 1944 1973 1 201 112 4 5 3 103 6 112 6 24 105 1 7 104 1536 1504 0 72 68 5 113 8 47 5 68 5 24 63 7 171 1944 1971 0 198 112 3 5 3 103 6 112 6 24 104 4 105 1538 1507 1 74 68 6 113 8 47 5 68 6 24 63 3 ...

Page 388: ... 3 111 7 24 110 8 15 1 0 0 0 1 70 0 131 6 61 7 70 0 24 69 1 1 0 0 0 1 111 3 4 8 116 4 111 6 24 110 9 0 1 1 1 2 70 1 131 5 61 6 70 1 24 69 3 0 1 0 1 1 111 3 4 9 116 4 111 6 24 111 1 Protection and Contact I O Elements 21 V 51 50 32 67 Dm 27 59 ZZZZZZ P P G Q Q P G Q 255 TSih ZLV Out1 In1 ABCABC O 1 1 1 V 1 1 1 P P P 9S 7mo lOd 1357 135 BCAGGG L PGQ 232323 QI 232323 QG PPS PPS VFA 9et dPc 246A 246 1...

Page 389: ...rp QQ b V rr b 12 V rr b V rr b V rr b V r b 13 V r b V r b V r b V r b 14 V r V r V r V r 15 V r V r V r V r Communication Elements S TMB RMB TMB RMB RRCL Lcl Rem Ltch SELogic 3O A A B B OBBB PT 1357 1357 1357 1357 KAAO O RW RW RW RW RW RW 1111111 OF 2468 2468 2468 2468 DDK C 5 6 7 8 9 10 1234567890123456 1 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 2 00 00 00 00 40 0...

Page 390: ...00 00 40 00 9 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 10 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 11 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 12 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 13 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 00 00 00 00 40 00 14 00 00 00 00...

Page 391: ... 87 50L1 0 50 50GZ1 0 50 k0M1 0 726 k0A1 3 69 Z1PD OFF Z2PD 20 00 Z3PD OFF Z1GD OFF Z2GD 20 00 Z3GD OFF Z1D OFF Z2D OFF Z3D OFF 50P1P 11 25 67P1D 0 00 51GP 0 75 51GC U3 51GTD 2 00 51GRS Y 51QP 2 20 51QC U3 51QTD 2 00 51QRS N ZLF 9 22 ZLR 9 22 PLAF 30 00 NLAF 30 00 PLAR 150 00 NLAR 210 00 DIR3 R ORDER QVI CLOEND OFF 52AEND 10 00 SOTFD 30 00 DMTC 60 PDEMP OFF GDEMP OFF QDEMP OFF TDURD 9 00 CFD 60 00...

Page 392: ...UT107 0 DP1 52A DP2 0 DP3 0 DP4 0 DP5 0 DP6 0 DP7 0 DP8 0 DP9 0 DP10 0 DP11 0 DP12 0 DP13 0 DP14 0 DP15 0 DP16 0 SS1 0 SS2 0 SS3 0 SS4 0 SS5 0 SS6 0 ER M2P Z2G 51G 51Q 50P1 LOP FAULT 51G 51Q M2P Z2G BSYNCH 0 CLMON 0 E32IV 1 Global Settings TGR 1800 00 NFREQ 60 PHROT ABC DATE_F MDY FP_TO 15 00 SCROLD 5 LER 15 PRE 4 DCLOP OFF DCHIP OFF IN101D 0 00 IN102D 0 00 IN103D 0 00 IN104D 0 00 IN105D 0 00 IN10...

Page 393: ...mn data relates to the actual sampled waveform and RMS values Figure 12 4 shows how the event report current column data can be converted to phasor RMS values Voltages are processed similarly Figure 12 3 Derivation of Event Report Current Values and RMS Current Values From Sampled Current Waveform In Figure 12 3 note that any two rows of current data from the event report in Figure 12 2 1 4 cycle ...

Page 394: ...12 28 Standard Event Reports and SER Date Code 20011205 SEL 311B Instruction Manual Figure 12 4 Derivation of Phasor RMS Current Values From Event Report Current Values ...

Page 395: ... each element in the SER lists every 1 4 cycle If an element changes state the relay time tags the changes in the SER For example setting SER1 contains distance and time overcurrent element pickups Thus any time one of these elements picks up or drops out the relay time tags the change in the SER The relay adds a message to the SER to indicate power up or settings change to active setting group co...

Page 396: ...dest row row 33 at the beginning top of the report and the latest row row 10 at the end bottom of the report Chronological progression through the report is down the page and in descending row number SER 47 22 If SER is entered with two numbers following it 47 and 22 in this example 47 22 all the rows between and including rows 47 and 22 are displayed if they exist They display with the newest row...

Page 397: ... the above example SER commands are dependent on the Date Format setting DATE_F If setting DATE_F MDY then the dates are entered as in the above examples Month Day Year If setting DATE_F YMD then the dates are entered Year Month Day If the requested SER event report rows do not exist the relay responds No SER Data Clearing SER Report Clear the SER report from nonvolatile memory with the SER C comm...

Page 398: ... Example Sequential Events Recorder SER Event Report The SER event report rows in Figure 12 5 are explained in the following text numbered in correspondence to the column The boxed numbered comments in Figure 12 2 also correspond to the column numbers in Figure 12 5 The SER event report in Figure 12 5 may contain records of events that occurred before and after the standard event report in Figure ...

Page 399: ...13 11 Test Setup 13 11 Test Source Connections 13 11 Serial Communication Equipment Connections 13 16 Test Procedures 13 17 Overcurrent Elements 13 17 Negative Sequence Directional Element 13 19 Phase Mho Distance Elements 13 29 Ground Mho Distance Elements 13 35 Troubleshooting Test Results 13 42 Relay Self Tests 13 43 Relay Troubleshooting 13 46 Inspection Procedure 13 46 Troubleshooting Procedu...

Page 400: ...round Fault Test Connections Using Two Current Sources 13 13 Figure 13 4 Three Phase Fault and METER Test Connections Using Two Current Sources 13 14 Figure 13 5 Phase to Ground Fault Test Connections Using a Single Current Source 13 15 Figure 13 6 Phase to Phase Fault Test Connections Using a Single Current Source 13 16 Figure 13 7 Communications Connections Between the SEL 311B Relay and a Termi...

Page 401: ...y system Goals a Ensure that the relay meets published critical performance specifications such as operating speed and element accuracy b Ensure that the relay meets the requirements of the intended application c Gain familiarity with relay settings and capabilities What to test All protection elements and logic functions critical to the intended application SEL performs detailed acceptance testin...

Page 402: ...ns that lower the utility dependence on routine maintenance testing Use the SEL relay reporting functions as maintenance tools Periodically verify that the relay is making correct and accurate current and voltage measurements by comparing the relay METER output to other meter readings on that line Review relay event reports in detail after each fault Using the event report current voltage and rela...

Page 403: ...mary for each oscillographic event report Use the SUM command to view and acknowledge the event summaries Use the event summary to quickly verify proper relay operation Compare the reported fault current and voltage magnitudes and angles against the reported fault location and fault type If you question the relay response or your test method obtain the oscillographic event report for a more detail...

Page 404: ...ing module relay main board You can test the relay processing module using signals from the SEL RTS Low Level Relay Test System Never apply voltage signals greater than 9 volts peak peak to the low level test interface Figure 13 1 shows the signal scaling factors CAUTION The relay contains devices sensitive to Electrostatic Discharge ESD When working on the relay with front or top cover removed wo...

Page 405: ...w of the LCD displays all elements asserted in Relay Word Row 28 The relay maps the state of the elements in Relay Word Row 28 on the bottom row of LEDs The 51PT element state is reflected on the LED labeled B See Table 9 3 for the correspondence between the Relay Word elements and the TAR command To view the 51PT element status from the serial port issue the TAR 51PT command The relay will displa...

Page 406: ...es and the SEL 311C has four zones Settings E21P E21MG and E21XG will need to be set to 2 instead of 3 when testing the SEL 311A Equipment Required The following equipment is necessary for initial checkout 1 Source of control power 2 Source of three phase voltages and at least two currents 3 Ohmmeter or contact opening closing sensing device Checkout Procedure Step 1 Purpose Be sure you received t...

Page 407: ... service is lost Step 4 Purpose Apply power supply voltage to the relay and access the relay via the optional LCD front panel Method Turn on the voltage source connected to the relay power supply inputs If you are using a battery simulator as the relay power supply voltage source be sure the simulator voltage level is stabilized The relay front panel Enable target EN should illuminate EN should ap...

Page 408: ...or of 1 73 Real power P should be approximately 160 1 MW reactive power Q should be approximately 0 MVAR If you inadvertently switched a pair of voltages or currents the MW reading should be approximately zero It is important to remember this when commissioning the relay using system voltages and currents Step 9 Purpose Use the front panel setting feature to adjust a relay setting Method The follo...

Page 409: ...per line of the display reads LL 100 00 Press SELECT Use the left right up and down arrow keys to change the setting to LL 99 00 Press SELECT Press EXIT Press SELECT YES to save the new settings Step 10 Purpose Test the fault locator Method Test the fault locator using the voltages and currents in Table 13 1 These voltages and currents were obtained for various locations and fault types assuming a...

Page 410: ... the expected results Table 13 2 Output Contact and Target LED Results Location Type Output Relays Target LEDs 75 miles AG OUT1 OUT2 OUT4 INST Zone 1 A G 75 miles BC OUT1 OUT2 OUT4 INST Zone 1 B C 85 miles AG OUT1 OUT2 OUT4 TIME Zone 2 A G 85 miles BC OUT1 OUT2 OUT4 TIME Zone 2 B C Output Contact Explanation The OUT1 and OUT2 are set to close for trips The relay is set to trip instantaneously for ...

Page 411: ...ile you are reviewing the fault data press the EXIT button then the EVENT button to review the new data You may review the long form event report for each fault using a terminal connected to one of the relay serial ports Each event report is a record of the currents voltages relay element states and logic input and contact output states See Section 12 Standard Event Reports and SER for further det...

Page 412: ... Voltage Source and Two Current Source Connections Figure 13 3 and Figure 13 4 show connections to use when three voltage sources and two current sources are available Phase to phase phase ground and two phase ground faults may be simulated using the connections shown in Figure 13 3 Three phase faults may be simulated using the connections shown in Figure 13 4 ...

Page 413: ...Date Code 20011205 Testing and Troubleshooting 13 13 SEL 311B Instruction Manual Figure 13 3 Phase to Phase Phase to Ground and Two Phase to Ground Fault Test Connections Using Two Current Sources ...

Page 414: ...rrent Sources Three Voltage Source and One Current Source Connections Figure 13 5 and Figure 13 6 show connections to use when three voltage sources and a single current source are available Phase ground faults may be simulated using the connections shown in Figure 13 5 Phase to phase faults may be simulated using the connections shown in Figure 13 6 ...

Page 415: ...Date Code 20011205 Testing and Troubleshooting 13 15 SEL 311B Instruction Manual Figure 13 5 Phase to Ground Fault Test Connections Using a Single Current Source ...

Page 416: ... relay event reports We recommend using a terminal during relay testing Figure 13 7 shows typical connections between a computer and the SEL 311B Relay Port F Complete details regarding serial communications with the relay may be found in Section 10 Serial Port Communications and Commands WARNING Use only serial communications cables manufactured by SEL or built to SEL specifications with the SEL ...

Page 417: ...element under test If the element under test is supervised by other conditions be sure that you understand the inputs necessary to satisfy the supervisory conditions and the overcurrent condition Step 2 Verify the element setting by executing the SHOWSET command via a terminal connected to a relay serial port or by examining the relay settings via the front panel LCD display using the Access Level...

Page 418: ...r C phase current Test using single phase current 50P1 50P2 50P3 Residual Residual current IR IA IB IC Test using single phase current 50G1 50G2 50G3 50G4 50GF 50GR Negative Sequence 3 I2 IA a2 IB a IC Test using single phase current 50Q1 50Q2 50Q3 50Q4 50QF 50QR Positive Sequence I1 1 3 IA a IB a2 IC Test using three phase or single phase current 50ABC Overcurrent Element Test Examples Examples b...

Page 419: ...1 element asserts causing OUT106 to close This should occur when current applied is approximately 11 25 amps Note As you perform this test other protection elements may assert causing the relay to close other output contacts and assert relay targets This is normal and is not a cause for concern Negative Sequence Directional Element The SEL 311B Relay includes phase F32Q and R32Q and ground F32QG a...

Page 420: ...ault ondary sec amps 90 2 I ondary sec volts 180 10 V 90 ANG 1 Z 2 2 Ð Ð Ð 2 2 90 2 90 1 180 Re 10 c 2 Z Ð Ð Ð 4 ohms 20 c 2 Z ohms 5 c 2 Z Notice that the result of Equation 13 1 is positive for a reverse fault and negative for a forward fault This result is consistent with actual behavior on the power system The relay determines fault direction by comparing the result of Equation 13 1 to forward...

Page 421: ...s for both Z2F and Z2R may be either positive or negative depending upon the constraints of the relay application Negative Sequence Directional Element Supervisory Conditions There are a number of supervisory conditions that must be fulfilled before the relay asserts the negative sequence directional elements These supervisory conditions are described below Magnitude of 3I2 The SEL 311B Relay uses...

Page 422: ... voltage and current sources set ELOP N to simplify the test Negative Sequence Directional Element Test Using Single Voltage and Current Sources Step 1 Execute the SHOWSET command and verify the following relay settings Z1MAG Z1ANG Z2F 50QF Z2R 50QR and a2 The example relay settings use the following settings Z1MAG 7 8 W Z1ANG 83 97 Z2F 0 77 W 50QF 0 5 amps secondary Z2R 5 45 W 50QR 0 5 amps secon...

Page 423: ... V a V a V V Using single phase signals simplifies the V2 and I2 calculations A 3 1 2 A 3 1 2 C B C B I I V V amps 0 I I volts 0 V V Assume that you apply a test voltage VA 18 0 Ð180 volts secondary volts 180 0 6 V volts 180 0 18 V 2 3 1 2 Ð Ð Determine the test angle of A phase current from the Z1ANG relay setting Equation 13 1 yields a positive result when I2 lags V2 by the angle of Z1ANG Equati...

Page 424: ...when Z2c is less than Z2FT As the magnitude of IA is increased the magnitudes of Z2c and Z2m decrease For magnitudes of IA less than 23 4 amps F32Q should not assert given the other test quantities For IA magnitudes greater than 23 4 amps Z2c applied is less than Z2FT so F32Q asserts Step 5 Turn on the voltage source Apply VA 18 0 V Ð180 IA 0 0 A Ð96 Slowly increase the magnitude of IA without var...

Page 425: ... to close other output contacts and assert relay targets This is normal and is not a cause for concern Negative Sequence Directional Element Test Using Three Voltage Sources and One Current Source Step 1 Execute the SHOWSET command and verify the following relay settings Z1MAG Z1ANG Z2F 50QF Z2R 50QR and a2 The example relay settings use the following settings Z1MAG 7 8 W Z1ANG 83 97 Z2F 0 77 W 50...

Page 426: ...e magnitude and angle of negative sequence voltages and currents You can calculate the magnitude and angle of V2 and I2 given the magnitude and angle of each of the phase quantities using the equations below C B 2 A 3 1 2 C B 2 A 3 1 2 I a I a I I V a V a V V Using a single phase current source simplifies the I2 calculation A 3 1 2 C B I I amps 0 I I Assume that you apply the following test voltag...

Page 427: ... 3 3 I ohms 45 5 volts 0 6 3 I A A Calculate Z2m ohms 45 5 m 2 Z A 1 1 V 0 6 m 2 Z I V m 2 Z 2 2 Because Z2R is positive use Equation 13 4 to calculate Z2RT ohms 45 5 RT 2 Z 45 5 25 0 45 5 75 0 RT 2 Z m 2 Z 25 0 R 2 Z 75 0 RT 2 Z The R32Q element asserts when Z2c applied is greater than Z2RT As the magnitude of IA is increased the magnitudes of Z2c and Z2m decrease For magnitudes of IA less than 3...

Page 428: ...t varying the phase angle The relay R32Q element asserts closing OUT107 when IA 0 5 amps This indicates that Z2c applied is greater than Z2RT 3I2 is greater than 50QR and I2 is greater than a2 I1 where a2 is the relay setting Continue to increase the magnitude of IA R32Q deasserts when IA 3 3 amps indicating that Z2c is now less than Z2RT F32Q asserts closing OUT106 when IA 23 4 amps indicating th...

Page 429: ...zone must be set to reach in the same direction Reach is set in secondary ohms The phase distance element maximum reach angle is always equal to the angle of Z1ANG Each zone has an instantaneous indication For example the M3P element asserts without intentional time delay for A B B C or C A faults within the Zone 3 characteristic All zones also include time delayed indication through elements M1PT...

Page 430: ...ge signals set ELOP N to simplify the test Load Encroachment Logic The relay includes Load Encroachment logic to help prevent the relay phase distance elements from operating improperly under heavy load conditions Forward and reverse load regions are defined using impedance and angle settings The relay calculates the positive sequence impedance If the calculated impedance falls within the set load...

Page 431: ...lays the current logic settings Type Y ENTER to accept those settings Connect output OUT106 to the sense input of your test set an ohmmeter or some other contact sensing device Step 3 Connect the voltage sources to the relay A phase B phase and C phase voltage inputs Connect the current source to the relay B phase and C phase current inputs Refer to the voltage and current connections shown in Fig...

Page 432: ...ated by the following equations TEST BC B BC C B BC C B TEST I 2 I I 2 I I I I I I I With a 50PP2 setting of 2 22 amps 50PP2 picks up when ITEST is greater than 1 11 amps The 50QF negative sequence overcurrent element operates based upon the magnitude of 3I2 applied Using the current connections shown in Figure 13 6 we can calculate the magnitude of 3I2 applied based upon the magnitude of ITEST Ð ...

Page 433: ...ngs the magnitude of VBC equals 46 8 volts From the equations above select the following test voltage magnitudes and angles volts 150 8 46 V volts 150 8 46 V volts 0 0 67 V C B A Ð Ð Ð The phase distance element maximum reach is measured when faulted phase to phase current lags faulted phase to phase voltage by the distance element maximum torque angle In the SEL 311B Relay the phase distance elem...

Page 434: ... Ð Ð Ð Ð Due to the test connections used IB IC ITEST Ð Ð Ð 03 6 A 5 2 I 97 173 A 5 2 I 0 A 0 0 I C B A amps 03 96 44 1 I amps 03 6 5 2 120 1 97 173 5 2 240 1 0 0 0 I 2 3 1 2 Ð Ð Ð Ð Ð Ð Using Equation 13 1 to calculate Z2c the result is ohms 47 15 c 2 Z ohms 91 2 FT 2 Z 47 15 25 0 77 0 25 1 FT 2 Z ohms 47 15 m 2 Z The Z2FT threshold is 2 91 W Z2c applied 15 47 W is less than the Z2FT threshold ba...

Page 435: ...he magnitude of ITEST2 using Equation 13 10 sec amps Angle pedance Im Test New Angle pedance Im Line cos I I 1 TEST 2 TEST amps 54 3 I amps 45 cos 5 2 I amps 97 38 97 83 cos 5 2 I 2 TEST 2 TEST 2 TEST Equation 13 10 Note As you perform this test other protection elements may assert causing the relay to close other output contacts and assert relay targets This is normal and is not a cause for conce...

Page 436: ...distance elements Phase and Ground Nondirectional Overcurrent Elements 50Ln and 50GZn Each zone ground distance element is supervised by two nondirectional overcurrent elements 50GZn and 50Ln where n indicates the zone associated with the overcurrent element For example the relay may assert the Zone 3 A ground distance element only if the A phase current is greater than the 50L3 setting and the re...

Page 437: ...ing relay settings Z1MAG Z1ANG E21MG E32 Z2MG 50L2 50GZ2 k0M1 k0A1 ORDER Z2F and 50QF The example relay settings use the following settings Z1MAG 7 8 Z1ANG 83 97 E21G 3 E32 Y Z2MG 9 36 W 50L2 0 50 50GZ2 0 50 k0M 0 726 k0A 3 69 ORDER Q Z2F 0 77 W 50QF 0 5 amps secondary Execute the SET command and change the following settings Change E21XG to N and ELOP from Y to N Changing the E21XG setting preven...

Page 438: ...gnals that fulfill the impedance and supervisory requirements of the relay but are within the ability of the test sources to produce accurately The Zone 2 ground distance element is forward reaching Thus it is supervised by the forward directional element 32GF as well as the 50L2 and 50GZ2 phase and residual overcurrent elements Applied phase current must exceed the 50L2 setting applied residual c...

Page 439: ...ctor for Zone 1 ground distance elements When the advanced user settings are not enabled EADVS N the remaining zone settings k0M and k0A follow k0M1 and k0A1 The impedance measured by the relay ground mho distance element for a Zone 2 fault is defined by the following equation R A A AG I 0 k I V Z Equation 13 11 Where k0 k0M Ðk0A For a fault on a radial system and when testing a ground distance el...

Page 440: ... are supervised by the negative sequence directional element It is important to check the negative sequence quantities applied and verify that the 32GF element should assert allowing the forward reaching distance element to operate Calculate the magnitude and angle of negative sequence voltage and current applied for the test quantities listed above Then calculate the negative sequence impedance Z...

Page 441: ...current angle to 82 Slowly increase the magnitude of current applied until the Z2G element asserts causing OUT106 to close This occurs when current applied is approximately 2 5 amps You may wish to test the distance element characteristic at impedance angles other than the line positive sequence impedance angle To do this you must adjust the magnitude and angle of ITEST from the values shown in Ta...

Page 442: ... small signals to the connected current and voltage inputs Trigger an event report using the TRIGGER command Plot the magnitude and angle of measured currents and voltages Check the TR TRCOMM and TRSOTF settings to determine which elements are enabled to trip Check the output logic equation settings to determine which outputs are enabled to trip Check the settings of elements that are enabled to t...

Page 443: ...signals were applied to cause the element under test to assert RELAY SELF TESTS The relay runs a variety of self tests The relay takes the following corrective actions for out of tolerance conditions see Table 13 5 Protection Disabled The relay disables protection elements and trip close logic All output contacts are deenergized The EN front panel LED is extinguished ALARM Output The ALARM output ...

Page 444: ...0 V 5 20 V No Pulsed Measures the 5 V power supply every 10 seconds Failure 4 65 V 5 40 V Yes Latched 5 V REG Warning 4 75 V 5 20 V 4 75 V 5 25 V No Pulsed Measures the regulated 5 V power supply every 10 seconds Failure 4 50 V 5 40 V 4 50 V 5 50 V Yes Latched 12 V PS Warning 11 50 V 12 50 V No Pulsed Measures the 12 V power supply every 10 seconds Failure 11 20 V 14 00 V Yes Latched 15 V PS Warni...

Page 445: ...Yes Latched Performs a checksum test on the nonvolatile copy of the relay settings every 10 seconds The following self tests are performed by dedicated circuitry in the microprocessor and the SEL 311B Relay main board Failures in these tests shut down the microprocessor and are not shown in the STATUS report Micro processor Crystal Failure Yes Latched The relay monitors the microprocessor crystal ...

Page 446: ...djustment Use the steps below to adjust the contrast a Remove the relay front panel by removing the six front panel screws b Press any front panel button The relay should turn on the LCD back lighting c Locate the contrast adjust potentiometer adjacent to the serial port connector d Use a small screwdriver to adjust the potentiometer e Replace the relay front panel Relay Does Not Respond to Comman...

Page 447: ...not loose or defective 5 Inspect the relay self test status with the STA command or with the front panel STATUS button RELAY CALIBRATION The SEL 311B Relay is factory calibrated If you suspect that the relay is out of calibration please contact the factory FACTORY ASSISTANCE We appreciate your interest in SEL products and services If you have questions or comments please contact us at Schweitzer E...

Page 448: ......

Page 449: ...5 SEL 221F 3 Settings Sheets 14 27 SEL 221C to SEL 311B Settings Conversion Guide 14 33 Application Settings 14 34 Convert SEL 221C Primary Quantities to SEL 311B Secondary Quantities 14 34 Convert SEL 221C Relay Settings to SEL 311B Relay Settings 14 34 Convert SEL 221C Output Mask Logic Settings to SELOGIC Control Equations 14 39 SEL 221C Settings Sheets 14 45 SEL 221 16 to SEL 311B Settings Con...

Page 450: ... and E 14 25 Table 14 11 SEL 221F 3 Setting BFIN1 14 25 Table 14 12 SEL 311B Settings Calculated From SEL 221C Settings 14 35 Table 14 13 SEL 311B SELOGIC Equation Equivalent to Each SEL 221C Mask Logic Setting 14 39 Table 14 14 SELOGIC Equivalent to SEL 221C Relay Word Bits 14 39 Table 14 15 Default SEL 221C Mask Logic Setting for MTU 14 41 Table 14 16 SEL 311B Settings Calculated From SEL 221 16...

Page 451: ...e used after setting APP is changed from 221F to 311B do not change setting APP back to 221F As described above when setting APP 221F the user is presented only with SEL 311B settings associated with the features found in an SEL 221F This section explains how to make those remaining SEL 311B settings directly from the settings used in an SEL 221F There are mainly two kinds of settings in the SEL 3...

Page 452: ...ted from percent of primary line impedance to secondary impedance in ohms For example the Zone 1 distance setting in the SEL 311B Z1P is calculated as MAG Z Z P Z 1 100 1 1 where Z1 is the SEL 221F distance reach setting Z1MAG is the SEL 311B positive sequence line impedance setting in secondary ohms Z1P is the SEL 311B Zone 1 reach setting in secondary ohms Convert SEL 221F Relay Settings to SEL ...

Page 453: ... SPTR Z1MAG R X CTR PTR 1 1 2 2 é ë ê ù û ú Section 9 Settings Sheets Section 5 R1 X1 R0 X0 and Line Length LL Z1ANG Arc X R tan 1 1 é ë ê ù û ú degrees MTA Z0MAG R X CTR PTR 0 0 2 2 é ë ê ù û ú Z0ANG Arc X R tan 0 0 é ë ê ù û ú degrees LL LL APP None ELOP N Y LOPE N Y Section 4 Loss of Potential Section 5 Loss of Potential LOP Enable Setting LOPE Z1P Z1MG MAG Z Z 1 100 1 Section 3 Phase Distance ...

Page 454: ...5 Zone 3 Phase and Ground Time Delay Z3D 50P1P 50H CTR Section 5 Switch Onto Fault SOTF Trip Logic Section 5 High Set Phase Overcurrent Element Setting 50G1P N A 67G1TC 1 67NP CTR 67NTC In the SEL 311B 50G1P is fixed forward Section 3 Residual Ground Inst Def Time Overcurrent Elements Section 5 67NP Residual Overcurrent Settings 67NP 67NTC 51GP 51NP CTR Section 3 Residual Ground Time Overcurrent E...

Page 455: ...t Protection SOTFD 52BT Dropout TDURD TDUR Section 4 Unlatch Trip Section 5 Trip Duration Timer TDUR SV1PU A1TP Section 7 SELOGIC control equation Variables Timers Section 2 Miscellaneous Timers SV1DO A1TD SV2PU VCT Section 3 Voltage Elements SV2DO None Section 7 Latch Control Switches Curve U1 in the SEL 311B is slightly different from curve 1 in the SEL 221F Time dial adjustments may be necessar...

Page 456: ...F Mask Logic Setting SEL 221F Settings Mask SEL 311B SELOGIC Equations MTU TR MPT SV3 DTT MTB SV4 DTT MTO TRSOTF MA1 OUT104 MA2 OUT105 MA3 OUT106 MA4 OUT107 MRI 79RI MRC 79DTL Table 14 3 shows all SEL 221F Relay Word bits and an approximate equivalent SEL 311B SELOGIC expression when setting APP 221F in the SEL 311B Table 14 2 shows each SEL 221F Mask Logic Setting and the equivalent SEL 311B SELO...

Page 457: ...ay Word Bits SEL 221F Relay Word Bit Equivalent SEL 311B SELOGIC Expression Z1P M1P Z1G Z1G Z2PT M2PT Z2GT Z2GT Z3 M3P M3G Z3T Z3T 3P21 M3P 32QF 32Q 32GF 32QF 67N 67G1 51NP 51G 51NT 51GT 50NG None 50P None 50H 50P1 IN1 IN101 REJO None LOP ILOP 52BT SOTFE 27S 59VS 27P 59VP 59S 59VS 59P 59VP SSC 25A1 VSC LSDP LPDS SV2T 59VS 59VP 50L 59VP 59VS 50L ...

Page 458: ...tically sets the following SELOGIC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221F to customize the relay logic Table 14 4 Default SEL 221F Mask Logic Setting for MRC Z1P Z1G Z2PT Z2GT Z3 Z3T 3P21 32Q 0 0 0 0 0 1 0 0 67N 51NP 51NT 50NG 50P 50H IN1 REJO 0 0 1 0 0 0 0 0 LOP 52BT 27S 27P 59S 59P SSC VSC 0 0 0 0 0 0 0 0 Default Tripping Logic Equat...

Page 459: ...4 5 SEL 221F Setting PSVC for Settings P S and E SEL 311B Relay Word Bit PSVC S Default PSVC P PSVC E SET1 0 1 1 RST1 1 0 0 SET2 1 0 1 RST2 0 1 0 The following contact input assignments are made automatically by the SEL 311B when setting APP 221F These assignments cannot be changed unless setting APP is changed back to APP 311B Default Contact Input Functions IN101 Programmable Input Direct Trip I...

Page 460: ......

Page 461: ...NG Zero sequence line impedance magnitude 0 05 255 00 W secondary 5 A nom 0 25 1275 00 W secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Application 311B 221F 221F3 221C 221 16 2PG10 APP 221F Loss of Potential Y Y1 N see Figure 4 1 ELOP Phase Distance Elements See Settings Explanations in Section 3 Zone 1 OFF 0 05 64 00 W seco...

Page 462: ...1 C5 see Figures 9 1 through 9 10 51GC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 51GTD Synchronism Check Elements See Figures 3 24 and 3 25 Voltage window low threshold 0 00 150 00 V secondary 25VLO Voltage window high threshold 0 00 150 00 V secondary 25VHI Maximum slip frequency 0 005 0 500 Hz 25SF Maximum angle 1 0 00 80 00 25ANG1 Maximum angle 2 0 00 80 00 25ANG2 Synchro...

Page 463: ... trip conditions TRSOTF Direct transfer trip conditions DTT Reclosing Relay Equations See Reclosing Relay in Section 6 Reclose initiate 79RI Drive to lockout 79DTL Latch Bits Set Reset Equations See Figure 7 11 Set Latch Bit LT1 SET1 Reset Latch Bit LT1 RST1 Set Latch Bit LT2 SET2 Reset Latch Bit LT2 RST2 Torque Control Equations for Inst Def Time Overcurrent Elements Note torque control equation ...

Page 464: ... details on the LMD protocol The following settings are used if PROTO LMD LMD Prefix PREFIX LMD Address 01 99 ADDR LMD Settling Time 0 30 seconds SETTLE Communications Settings Baud Rate 300 1200 2400 4800 9600 19200 38400 SPEED Data Bits 6 7 8 BITS Parity O E N Odd Even None PARITY Stop Bits 1 2 STOP Other Port Settings See Below Time out 0 30 minutes T_OUT DTA Meter Format Y N DTA Send Auto Mess...

Page 465: ...racters it deasserts the RTS line Setting RTSCTS is not applicable to serial Port 1 EIA 485 or a port configured for SEL Distributed Port Switch Protocol Set FASTOP Y to enable binary Fast Operate messages at the serial port Set FASTOP N to block binary Fast Operate messages Refer to Appendix D for the description of the SEL 311B Relay Fast Operate commands Power System Configuration See Settings ...

Page 466: ......

Page 467: ...nged from 221F3 to 311B do not change setting APP back to 221F3 As described above when setting APP 221F3 the user is presented only with SEL 311B settings associated with the features found in an SEL 221F 3 This section explains how to make those remaining SEL 311B settings directly from the settings used in an SEL 221F 3 There are mainly two kinds of settings in the SEL 311B Relay settings are s...

Page 468: ...rted from percent of primary line impedance to secondary impedance in ohms For example the Zone 1 distance setting in the SEL 311B Z1P is calculated as MAG Z Z P Z 1 100 1 1 where Z1 is the SEL 221F 3 distance reach setting Z1MAG is the SEL 311B positive sequence line impedance setting in secondary ohms Z1P is the SEL 311B Zone 1 reach setting in secondary ohms Convert SEL 221F 3 Relay Settings to...

Page 469: ...TRS SPTR Z1MAG R X CTR PTR 1 1 2 2 é ë ê ù û ú Section 9 Settings Sheets Section 5 R1 X1 R0 X0 and Line Length LL Z1ANG Arc X R tan 1 1 é ë ê ù û ú degrees MTA Z0MAG R X CTR PTR 0 0 2 2 é ë ê ù û ú Z0ANG Arc X R tan 0 0 é ë ê ù û ú degrees LL LL APP None ELOP N Y LOPE N Y Section 4 Loss of Potential Section 5 Loss of Potential LOP Enable Setting LOPE Z1P Z1MG MAG Z Z 1 100 1 Section 3 Phase Distan...

Page 470: ...ection 5 Switch Onto Fault SOTF Trip Logic Section 5 High Set Phase Overcurrent Element Setting 50P2P None Breaker failure phase overcurrent pickup 50G1P N A 67G1TC 1 67NP CTR 67NTC In the SEL 311B 50G1P is fixed forward Section 3 Residual Ground Inst Def Time Overcurrent Elements Section 5 67NP Residual Overcurrent Settings 67NP 67NTC 50G2P None Breaker failure residual overcurrent pickup 51GP 51...

Page 471: ...Fault Protection SOTFD 52BT Dropout TDURD TDUR Section 4 Unlatch Trip Section 5 Trip Duration Timer TDUR SV1PU BFTD Section 3 Inst Def Time Overcurrent Elements Section 2 Breaker Failure Features of the SEL 221 3 121F 3 and 221F 4 Relays SV1DO None Section 7 Latch Control Switches SV2PU VCT Section 3 Voltage Elements SV2DO None Section 7 Latch Control Switches Curve U1 in the SEL 311B is slightly ...

Page 472: ...EL 311B SELOGIC Equations MTU TR MPT SV3 DTT MTB SV4 DTT MTO TRSOTF MA1 OUT104 MA2 OUT105 MA3 OUT106 MA4 OUT107 MRI 79RI MRC 79DTL Table 14 8 shows all SEL 221F 3 Relay Word bits and an approximate equivalent SEL 311B SELOGIC expression when setting APP 221F3 in the SEL 311B Table 14 7 shows each SEL 221F 3 Mask Logic Setting and the equivalent SEL 311B SELOGIC control equation To convert a SEL 22...

Page 473: ... factory default setting for MRC in the SEL 221F 3 is shown in Table 14 9 From Table 14 7 the equivalent SEL 311B SELOGIC control equation to MRC is 79DTL Constructing the logical OR of the equivalent of each element selected in the MRC mask from Table 14 8 gives 79DTL Z3T 51GT Include the open command OC 79DTL Z3T 51GT OC This is the default SELOGIC control equation for 79DTL when APP 221F3 When ...

Page 474: ...efault Tripping Logic Equations TR M1P Z1G M2PT Z2GT Z3T 67G1 51GT OC TRSOTF M1P Z1G M2PT Z2GT M3P Z3G Z3T 67G1 51GT 50P1 DTT IN101 SV3 IN102 SV4 IN103 Default Reclose Logic Equations 79RI M1P Z1G M2PT Z2GT 67G1 79DTL Z3T 51GT OC Default Output Contact Logic Equations OUT101 TRIP OUT102 TRIP OUT103 CLOSE OUT104 25A1 OUT105 SV4T OUT106 M1P Z1G M2PT Z2GT 67G1 OUT107 Z3T 51GT SELOGIC Variables Equati...

Page 475: ...SET2 1 0 0 RST2 0 1 1 The SELOGIC latch equation SET3 emulates the SEL 221F 3 setting BFIN1 Table 14 11 SEL 221F 3 Setting BFIN1 SEL 311B Relay Word Bit BFIN1 N Default BFIN1 Y SET3 0 1 RST3 1 0 The following contact input assignments are made automatically by the SEL 311B when setting APP 221F3 These assignments cannot be changed unless setting APP is changed back to APP 311B Default Contact Inpu...

Page 476: ......

Page 477: ...ANG Zero sequence line impedance magnitude 0 05 255 00 W secondary 5 A nom 0 25 1275 00 W secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Application 311B 221F 221F3 221C 221 16 2PG10 APP 221F3 Loss of Potential Y Y1 N see Figure 4 1 ELOP Phase Distance Elements See Settings Explanations in Section 3 Zone 1 OFF 0 05 64 00 W se...

Page 478: ...ndary 1 A nom 50G2P Residual Ground Time Overcurrent Element See Figure 3 19 Pickup OFF 0 50 16 00 A secondary 5 A nom 0 10 3 20 A secondary 1 A nom 51GP Curve U1 U5 C1 C5 see Figures 9 1 through 9 10 51GC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 51GTD Synchronism Check Elements See Figures 3 24 and 3 25 Voltage window low threshold 0 00 150 00 V secondary 25VLO Voltage win...

Page 479: ...9 00 cycles in 0 25 cycle steps SV2PU SV2 Dropout Time 0 00 999999 00 cycles in 0 25 cycle steps SV2DO Trip Logic Equations See Figure 5 1 Direct trip conditions TR Switch onto fault trip conditions TRSOTF Direct transfer trip conditions DTT Reclosing Relay Equations See Reclosing Relay in Section 6 Reclose initiate 79RI Drive to lockout 79DTL Latch Bits Set Reset Equations See Figure 7 11 Set Lat...

Page 480: ...tact OUT107 OUT107 Protocol Settings See Below Protocol SEL LMD DNP MBA MBB MB8A MB8B PROTO Protocol Settings Set PROTO SEL for standard SEL ASCII protocol For SEL Distributed Port Switch Protocol LMD set PROTO LMD Do not use MIRRORED BITS MBx protocol in Application Settings Refer to Appendix C for details on the LMD protocol The following settings are used if PROTO LMD LMD Prefix PREFIX LMD Addr...

Page 481: ...TS Y to enable hardware handshaking With RTSCTS Y the relay will not send characters until the CTS input is asserted Also if the relay is unable to receive characters it deasserts the RTS line Setting RTSCTS is not applicable to serial Port 1 EIA 485 or a port configured for SEL Distributed Port Switch Protocol Set FASTOP Y to enable binary Fast Operate messages at the serial port Set FASTOP N to ...

Page 482: ......

Page 483: ...B do not change setting APP back to 221C As described above when setting APP 221C the user is presented only with SEL 311B settings associated with the features found in an SEL 221C This section explains how to make those remaining SEL 311B settings directly from the settings used in an SEL 221C There are mainly two kinds of settings in the SEL 311B relay settings and SELOGIC settings Relay settin...

Page 484: ... used in the SEL 311B Divide the SEL 221C current setting by the current transformer ratio setting CTR to make the change SEL 221C impedance settings must be converted from percent of primary line impedance to secondary impedance in ohms For example the Zone 1 distance setting in the SEL 311B Z1P is calculated as MAG Z Z P Z 1 100 1 1 where Z1 is the SEL 221C distance reach setting Z1MAG is the SE...

Page 485: ... ID CTR CTR Section 9 Settings Sheets Section 5 Current and Potential Transformer Ratio Selection CTRP CTR PTR PTR PTRS PTR Z1MAG R X CTR PTR 1 1 2 2 é ë ê ù û ú Section 9 Settings Sheets Section 5 R1 X1 R0 X0 and Line Length Z1ANG ú û ù ê ë é R1 X1 tan Arc degrees MTA Z0MAG R X CTR PTR 0 0 2 2 é ë ê ù û ú Z0ANG ú û ù ê ë é R0 X0 tan Arc degrees LL LL Section 9 Settings Sheets APP None EFLOC LOCAT...

Page 486: ... Time Delay Elements Section 5 Zone 3 Distance Element Timer 50P1P 50H CTR Section 5 Switch Onto Fault SOTF Trip Logic Section 5 High Set Phase Overcurrent Setting 50P2P 50M CTR Section 4 Loss of Potential Logic Section 5 Medium Set Phase Overcurrent Setting 50M 50G1P 50N1P CTR Section 3 Inst Def Time Overcurrent Elements Section 5 Residual Overcurrent Setting 50N1P 50G2P 50N2P CTR Section 5 Resid...

Page 487: ...GP 51NP CTR Section 3 Residual Section 5 Residual 51GC 51NC Ground Time Time Overcurrent U1 1 Overcurrent Element Settings 51PP 51PC U2 2 51PTD 51NTC U3 3 U4 4 51GTD 51NTD 51GTC 51NTC 1 N 32GF Y DIR3 ZONE 3 Section 4 Directional Control Settings Section 5 Zone 3 Direction Setting ORDER Q V I 32QE 32VE 32IE Section 4 Directional Control for Ground Distance and Residual Ground Overcurrent Elements S...

Page 488: ...osing Relay Timer Settings 79RSLD None 52AEND 52BT Pickup Section 5 Switch Onto Fault SOTF Trip Logic Section 5 52BT Setting 52BT and Switch Onto Fault Protection SOTFD 52BT Dropout TDURD TDUR Section 4 Unlatch Trip Section 5 Trip Duration Timer TDUR SV1PU 50MFD Section 5 Medium Set Overcurrent Setting 50M SV9DO VCT Section 2 Reclosing Relay Curve U1 in the SEL 311B is slightly different from curv...

Page 489: ... OUT105 MA3 OUT106 MA4 OUT107 MRI 79RI MRC 79DTL Table 14 14 shows all SEL 221C Relay Word bits and an approximate equivalent SEL 311B SELOGIC expression when setting APP 221C in the SEL 311B Table 14 13 shows each SEL 221C Mask Logic Setting and the equivalent SEL 311B SELOGIC control equation To convert a SEL 221C Mask Logic Setting to a SELOGIC control equation logically OR each appropriate SEL...

Page 490: ...V1T SV1 50P2 ILOP RC None SELOGIC equation 79DTL RI None SELOGIC equation 79RI Z3PT M3PT 50M 50P2 TRIP TRIP or OUT101 or OUT102 TC OC DT IN101 52BT SOTFE 59N 59N1 For example the factory default setting for MTU in the SEL 221C is shown in Table 14 15 From Table 14 13 the equivalent SEL 311B SELOGIC control equation to MTU is TR Constructing the logical OR of the equivalent of each element selected...

Page 491: ... would change the Mask Logic settings in an SEL 221C to customize the relay logic Table 14 15 Default SEL 221C Mask Logic Setting for MTU 51PT 1ABC 2ABC 3ABC 51PP 50H 50L LOP 1 1 0 0 0 0 0 0 51NT 67N1 67N2 67N3 51NP Z1P Z2P Z3P 1 1 0 0 0 1 0 0 DF DR Z2GT Z3GT 50MF RC RI Z3PT 0 0 1 1 0 0 0 1 50M TRIP TC DT 52BT 59N 0 0 1 1 0 0 0 0 Default Tripping Logic Equations TR M1P M3PT 67G1 67G2T 67G3T 51PT 5...

Page 492: ...LC equal to a logical 1 at the same time This is an illegal condition in the SEL 221C and will cause misoperation of voltage supervised reclosing Figure 14 1 shows the implementation of SEL 221C voltage supervised reclosing in the SEL 311B These settings are made automatically by the SEL 311B when setting APP 221C These assignments cannot be changed unless setting APP is changed back to APP 311B S...

Page 493: ...1 R 52A SV13 SV12 79STL 79DTL 79CLS SV14 SV14 SV14 M311B047 Figure 14 1 Voltage Supervised Reclosing Logic The following contact input assignments are made automatically by the SEL 311B when setting APP 221C These assignments cannot be changed unless setting APP is changed back to APP 311B Default Input Logic Equations IN101 DT DIRECT TRIP IN102 PT PERMIT TO TRIP IN103 BT BLOCK TRIP IN104 DC DIREC...

Page 494: ......

Page 495: ...0 W secondary 5 A nom 0 25 1275 00 W secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Application 311B 221F 221F3 221C 221 16 2PG10 APP 221C Fault location Y N see Table 12 1 and Fault Location in Section 12 EFLOC Loss of Potential Y Y1 N see Figure 4 1 ELOP Mho Phase Distance Elements See Settings Explanations in Section 3 Zon...

Page 496: ...gures 9 1 through 9 10 51PC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 51PTD Residual Ground Time Overcurrent Element See Figure 3 19 Pickup OFF 0 50 16 00 A secondary 5 A nom 0 10 3 20 A secondary 1 A nom 51GP Curve U1 U5 C1 C5 see Figures 9 1 through 9 10 51GC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 51GTD Zone Level 3 and 4 Directional Control Zone ...

Page 497: ... Settings Minimum trip duration time 4 00 16000 00 cycles in 0 25 cycle steps TDURD SELOGIC Control Equation Variable Timers See Figures 7 23 and 7 24 SELOGIC control equation settings consist of Relay Word bits see Table 9 4 and SELOGIC control SV1 Pickup Time 0 00 999999 00 cycles in 0 25 cycle steps SV1PU SV1 Dropout Time 0 00 999999 00 cycles in 0 25 cycle steps SV1DO SV9 Dropout Time 0 00 160...

Page 498: ...ct OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Protocol Settings See Below Protocol SEL LMD DNP MBA MBB MB8A MB8B PROTO Protocol Settings Set PROTO SEL for standard SEL ASCII protocol For SEL Distributed Port Switch Protocol LMD set PROTO LMD Do not use MIRRORED BITS MBx protocol in A...

Page 499: ...ailable when PROTO SEL or LMD Set AUTO Y to allow automatic messages at the serial port Set RTSCTS Y to enable hardware handshaking With RTSCTS Y the relay will not send characters until the CTS input is asserted Also if the relay is unable to receive characters it deasserts the RTS line Setting RTSCTS is not applicable to serial Port 1 EIA 485 or a port configured for SEL Distributed Port Switch ...

Page 500: ......

Page 501: ...ot change setting APP back to 221 16 As described above when setting APP 221 16 the user is presented only with SEL 311B settings associated with the features found in an SEL 221 16 This section explains how to make those remaining SEL 311B settings directly from the settings used in an SEL 221 16 There are mainly two kinds of settings in the SEL 311B relay settings and SELOGIC settings Relay sett...

Page 502: ...must be converted from percent of primary line impedance to secondary impedance in ohms For example the Zone 1 distance setting in the SEL 311B Z1P is calculated as MAG Z Z P Z 1 100 1 1 where Z1 is the SEL 221 16 distance reach setting Z1MAG is the SEL 311B positive sequence line impedance setting in secondary ohms Z1P is the SEL 311B Zone 1 reach setting in secondary ohms Convert SEL 221 16 Rela...

Page 503: ...S PTR Z1MAG R X CTR PTR 1 1 2 2 é ë ê ù û ú Section 9 Settings Sheets Section 5 R1 X1 R0 X0 and Line Length LL Z1ANG Arc X R tan 1 1 é ë ê ù û ú degrees MTA Z0MAG R X CTR PTR 0 0 2 2 é ë ê ù û ú Z0ANG Arc X R tan 0 0 é ë ê ù û ú degrees LL LL APP 221 16 None ELOP N Y LOPE N Y Section 4 Loss of Potential Section 5 Loss of Potential LOP Enable Setting LOPE Z1P Z1MG MAG Z Z 1 100 1 Section 3 Phase Di...

Page 504: ...H CTR Section 5 Switch Onto Fault SOTF Trip Logic Section 5 High Set Phase Overcurrent Element Setting 50G1P N A 67G1TC 1 67NP CTR 67NTC In the SEL 311B 50G1P is fixed forward Section 3 Residual Ground Inst Def Time Overcurrent Elements Section 5 67NP Residual Overcurrent Settings 67NP 67NTC 51GP 51NP CTR Section 3 Residual Ground Time Overcurrent Element Section 5 Residual Time Overcurrent Settin...

Page 505: ...fault detector settings 50PP1 50PP2 50PP3 are set to their minimum values and hidden This corresponds to SEL 221 16 setting 50P SEL 311B phase to ground and residual fault detector settings 50L1 50L2 50L3 50GZ1 50GZ2 and 50GZ3 are set to their minimum values and hidden This corresponds to SEL 221 16 setting 50NG SEL 221 16 function Remote End Just Opened REJO is not implemented in the SEL 311B Con...

Page 506: ...ing to a SELOGIC control equation logically OR each appropriate SEL 221 16 Relay Word bit equivalent expression Table 14 18 and enter the resultant expression in the related SELOGIC control equation Table 14 17 Table 14 18 SELOGIC Equivalent to SEL 221 16 Relay Word Bits SEL 221 16 Relay Word Bit Equivalent SEL 311B SELOGIC Expression Z1P M1P Z1G Z1G Z2PT M2PT Z2GT Z2GT Z3 M3P M3G Z3T Z3T 3P21 M3P...

Page 507: ...IC control equations Change the settings just as you would change the Mask Logic settings in an SEL 221 16 to customize the relay logic Table 14 19 Default SEL 221 16 Mask Logic Setting for MRC Z1P Z1G Z2PT Z2GT Z3 Z3T 3P21 32Q 0 0 0 0 0 1 0 0 67N 51NP 51NT 50NG 50P 50H IN1 REJO 0 0 1 0 0 0 0 0 LOP TRIP 0 0 Default Tripping Logic Equations TR M1P Z1G M2PT Z2GT Z3T 67G1 51GT OC TRSOTF M1P Z1G M2PT ...

Page 508: ...ction IN101 IN1 Monitor IN102 PT Monitor IN103 BT Monitor IN104 DC Monitor IN105 52A Circuit Breaker Aux Contact IN106 ET External Event Report Trigger Default Output Contact Logic Equations OUT101 TRIP OUT102 TRIP OUT103 CLOSE OUT104 0 Reserved for MA1 OUT105 0 Reserved for MA2 OUT106 M1P Z1G M2PT Z2GT 67G1 Reserved for MA3 OUT107 Z3T 51GT Reserved for MA4 ...

Page 509: ...NG Zero sequence line impedance magnitude 0 05 255 00 W secondary 5 A nom 0 25 1275 00 W secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Application 311B 221F 221F3 221C 221 16 2PG10 APP 221 16 Loss of Potential Y Y1 N see Figure 4 1 ELOP Phase Distance Elements See Settings Explanations in Section 3 Zone 1 OFF 0 05 64 00 W se...

Page 510: ... nom 51GP Curve U1 U5 C1 C5 see Figures 9 1 through 9 10 51GC Time Dial 0 50 15 00 for curves U1 U5 0 05 1 00 for curves C1 C5 51GTD Reclosing Relay See Tables 6 2 and 6 3 Open interval 1 time 0 00 999999 00 cycles in 0 25 cycle steps 79OI1 Reset time from reclose cycle 0 00 999999 00 cycles in 0 25 cycle steps 79RSD Reset time from lockout 0 00 999999 00 cycles in 0 25 cycle steps 79RSLD Switch O...

Page 511: ...ontact OUT101 OUT101 Output Contact OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 Protocol Settings See Below Protocol SEL LMD DNP MBA MBB MB8A MB8B PROTO Protocol Settings Set PROTO SEL for standard SEL ASCII protocol For SEL Distributed Port Switch Protocol LMD set PROTO LMD Do not us...

Page 512: ...vailable when PROTO SEL or LMD Set AUTO Y to allow automatic messages at the serial port Set RTSCTS Y to enable hardware handshaking With RTSCTS Y the relay will not send characters until the CTS input is asserted Also if the relay is unable to receive characters it deasserts the RTS line Setting RTSCTS is not applicable to serial Port 1 EIA 485 or a port configured for SEL Distributed Port Switch...

Page 513: ... APP back to 2PG10 As described above when setting APP 2PG10 the user is presented only with SEL 311B settings associated with the features found in an SEL 2PG10 This section explains how to make those remaining SEL 311B settings directly from the settings used in an SEL 2PG10 There are mainly two kinds of settings in the SEL 311B relay settings and SELOGIC settings Relay settings are settings for...

Page 514: ...he change SEL 2PG10 impedance settings must be converted from percent of primary line impedance to secondary impedance in ohms For example the Zone 1 distance setting in the SEL 311B Z1P is calculated as MAG Z Z P Z 1 100 1 1 where Z1 is the SEL 2PG10 distance reach setting Z1MAG is the SEL 311B positive sequence line impedance setting in secondary ohms Z1P is the SEL 311B Zone 1 reach setting in ...

Page 515: ...Settings Sheets CTRP CTR PTR PTR PTRS SPTR Z1MAG R X CTR PTR 1 1 2 2 é ë ê ù û ú Section 9 Settings Sheets Z1ANG Arc X R tan 1 1 é ë ê ù û ú degrees MTA Z0MAG R X CTR PTR 0 0 2 2 é ë ê ù û ú Z0ANG Arc X R tan 0 0 é ë ê ù û ú degrees LL LL APP None Z1P MAG Z Z 1 100 where Z1MAG ú û ù ê ë é PTR CTR X R 2 2 1 1 Section 3 Phase Distance Elements Z1PD PTMR Section 3 Zone Time Delay Elements 50G1P SV1 5...

Page 516: ...t Elements Curve U1 in the SEL 311B is slightly different from curve 1 in the SEL 2PG10 Time dial adjustments may be necessary Note SEL 311B phase to phase fault detector setting 50PP1 is set to its minimum value and hidden This corresponds to SEL 2PG10 setting 50L Convert SEL 2PG10 Output Mask Logic Settings to SELOGIC Control Equations See Access Level 2 Commands in Section 4 Commands and Serial...

Page 517: ...4 22 SELOGIC Equivalent to SEL 2PG10 Relay Word Bits SEL 2PG10 Relay Word Bit Equivalent SEL 311B SELOGIC Expression 50L None ZABC MABC1 ZP MPP1 ZPT M1PT 67NP 51G 67NT 51GT 67NI 67G1 Directional 50G1 Non directional 67DT 67G1T Directional SVIT Non directional For example the factory default setting for MT in the SEL 2PG10 is shown in Table 14 23 From Table 14 21 the equivalent SEL 311B SELOGIC con...

Page 518: ...TC 1 SELOGIC Variables Equations SV1 0 Reserved for non directional instantaneous overcurrent timer Default Contact Input Functions 311 Input 2PG10 Label Function IN101 ET1 External Trigger 1 IN102 ET2 External Trigger 2 IN103 E1 Monitor 1 IN104 E2 Monitor 2 IN105 E3 Monitor 3 IN106 52A Circuit breaker auxiliary contact Default Output Contact Logic Equations OUT101 TRIP OUT102 TRIP OUT103 MABC1 Re...

Page 519: ...00 W secondary 5 A nom 0 25 1275 00 W secondary 1 A nom Z0MAG Zero sequence line impedance angle 5 00 90 00 degrees Z0ANG Line length 0 10 999 00 unitless LL Application 311B 221F 221F3 221C 221 16 2PG10 APP 2PG10 Mho Phase Distance Elements See Settings Explanations in Section 3 Zone 1 OFF 0 05 64 00 W secondary 5 A nom 0 25 320 00 W secondary 1 A nom Z1P Mho Phase Distance Element Time Delays Se...

Page 520: ...l 0 Residual Ground see Figure 3 19 51GTC SELOGIC Control Equation Variable Timer Input Equations See Figure 7 23 SELOGIC Control Equation Variable SV1 SV1 Output Contact Equations See Figure 7 26 Output Contact OUT101 OUT101 Output Contact OUT102 OUT102 Output Contact OUT103 OUT103 Output Contact OUT104 OUT104 Output Contact OUT105 OUT105 Output Contact OUT106 OUT106 Output Contact OUT107 OUT107 ...

Page 521: ...low an SEL DTA or SEL DTA2 to communicate with the relay This setting is available when PROTO SEL or LMD Set AUTO Y to allow automatic messages at the serial port Set RTSCTS Y to enable hardware handshaking With RTSCTS Y the relay will not send characters until the CTS input is asserted Also if the relay is unable to receive characters it deasserts the RTS line Setting RTSCTS is not applicable to ...

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Page 523: ...tion D 1 Message Lists D 1 Binary Message List D 1 ASCII Configuration Message List D 2 Message Definitions D 2 A5C0 Relay Definition Block D 2 A5C1 Fast Meter Configuration Block D 3 A5D1 Fast Meter Data Block D 4 A5C2 A5C3 Demand Peak Demand Fast Meter Configuration Messages D 4 A5D2 A5D3 Demand Peak Demand Fast Meter Message D 7 A5B9 Fast Meter Status Acknowledge Message D 7 A5CE Fast Operate C...

Page 524: ...rrent Elements F 1 Other Negative Sequence Overcurrent Element References F 2 APPENDIX G SETTING SELOGIC CONTROL EQUATIONS G 1 Relay Word Bits G 1 Relay Word Bit Operation Example Phase Time Overcurrent Element 51PT G 1 Other Relay Word Bits G 2 SELOGIC Control Equations G 3 SELOGIC Control Equation Operators G 3 All SELOGIC Control Equations Must Be Set G 7 SELOGIC Control Equation Limitations G ...

Page 525: ... Unsolicited Data Transfer Sent From Master to Relay J 2 02 Function Code Disable Unsolicited Data Transfer Sent From Master to Relay J 3 18 Function Unsolicited Fast SER Response Sent From Relay to Master J 3 Acknowledge Message Sent from Master to Relay and from Relay to Master J 5 TABLES Table G 1 SELOGIC Control Equation Operators Listed in Processing Order G 3 Table H 1 Data Access Methods H ...

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Page 527: ...n Added STA C command Added Fast SER SEL 311B R102 V0 Z001001 D20010625 This firmware differs from the original as follows Modified SEL 311 Relays to record consecutive event reports Modified the SUM command so that the Breaker Status reports the status from the last row of the event report SEL 311B R101 V0 Z001001 D20010518 This firmware differs from the original as follows Improved overflow supe...

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Page 529: ... computer Terminal emulation software that supports XMODEM CRC protocol e g CROSSTALK Microsoft Windows Terminal and HyperTerminal Procomm Plus Relay Gold and SmartCOM Serial communications cable SEL 234A or equivalent Disk containing firmware upgrade file UPGRADE PROCEDURE The instructions below assume you have a working knowledge of your personal computer terminal emulation software In particula...

Page 530: ...ompt and Y ENTER to the Are you sure Y N prompt The relay will send Relay Disabled and will then send the SELBOOT prompt after a few seconds Note SELBOOT does not echo nonalphabetic characters as the first character of a line This may make it appear that the relay is not functioning properly when just the ENTER key is pressed on the connected PC even though everything is OK 7 Make a copy of the fi...

Page 531: ... 38400 at the SELBOOT prompt The firmware receive can be started again at Step 8 The file transfer takes approximately 6 minutes at 38 400 baud using the 1k XMODEM protocol After the transfer completes the relay will reboot and return to Access Level 0 The following screen capture shows the entire process L_D ENTER L_D ENTER L_D ENTER L_D ENTER Disable relay to send or receive firmware Y N Y ENTER...

Page 532: ...s will be in effect OTTER for level 1 TAIL for level 2 e Issue the Restore Settings R_S command to restore the factory default settings in the relay This takes about two minutes then the EN LED will illuminate Note If the relay asks for a part number to be entered use the number from the label on the firmware diskette or from the new part number sticker if supplied f Enter Access Level 2 by issuin...

Page 533: ...press ENTER If the relay reinitializes after saving the changes go to Access Level 2 15 Execute the Status STA command to verify that all relay self test parameters are within tolerance and that the relay is enabled 16 Apply current and voltage signals to the relay Issue the MET command verify that the current and voltage signals are correct Issue the Trigger TRI and Event EVE commands Verify that...

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Page 535: ... is 01 SETTLE Time in seconds that transmission is delayed after the request to send RTS line asserts This delay accommodates transmitters with a slow rise time OPERATION 1 The relay ignores all input from this port until it detects the prefix character and the two byte address 2 Upon receipt of the prefix and address the relay enables echo and message transmission 3 Wait until you receive a promp...

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Page 537: ...e connected to the other end of the link requires software that uses the separate data streams to exploit this feature The binary commands and ASCII commands can also be accessed by a device that does not interleave the data streams SEL Application Guide AG95 10 Configuration and Fast Meter Messages is a comprehensive description of the SEL binary messages Below is a description of the messages pr...

Page 538: ...ngth 74 04 Support SEL LMD DNP 3 00 and R6 SEL protocols 03 Support Fast Meter fast demand and fast peak 03 Status flag for Warn Fail Group or Settings change A5C1 Fast Meter configuration A5D1 Fast Meter message A5C2 Fast demand configuration A5D2 Fast demand message A5C3 Fast peak configuration A5D3 Fast peak message 0004 Settings change bit A5C100000000 Reconfigure Fast Meter on settings change...

Page 539: ...channel name IB 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 494300000000 Analog channel name IC 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 495000000000 Analog channel name IP 01 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 564100000000 Analog channel name VA 01 ...

Page 540: ...x 06 VC channel index 00 Reserved checksum 1 byte checksum of all preceding bytes A5D1 Fast Meter Data Block In response to the A5D1 request the relay sends the following block Data Description A5D1 Command 94 Length 1 byte 1 Status Byte 80 bytes X and Y components of IA IB IC IP VA VB VC VS Freq and Vbatt in 4 byte IEEE FPS 8 bytes Time stamp 54 bytes 54 Digital banks TAR0 TAR53 1 byte Reserved c...

Page 541: ...Fast Meter message 334932000000 Analog channel name 3I2 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50412B000000 Analog channel name PA 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50422B000000 Analog channel name PB 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message...

Page 542: ...32D000000 Analog channel name PC 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 50332D000000 Analog channel name P3 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51412D000000 Analog channel name QA 02 Analog channel type FF Scale factor type 0000 Scale factor offset in Fast Meter message 51422D000000 Analog ch...

Page 543: ...ernal device should request the A5C1 A5C2 and A5C3 messages The external device can then determine if the scale factors or line configuration parameters have been modified A5CE Fast Operate Configuration Block In response to the A5CE request the relay sends the following block Data Description A5CE Command 3C Length 01 Support 1 circuit breaker 0010 Support 16 remote bit set clear commands 0100 Al...

Page 544: ...RB10 29 Operate code set remote bit RB10 49 Operate code pulse remote bit RB10 0A Operate code clear remote bit RB11 2A Operate code set remote bit RB11 4A Operate code pulse remote bit RB11 0B Operate code clear remote bit RB12 2B Operate code set remote bit RB12 4B Operate code pulse remote bit RB12 0C Operate code clear remote bit RB13 2C Operate code set remote bit RB13 4C Operate code pulse r...

Page 545: ...ns assert the remote bit for one processing interval 1 4 cycle It is common practice to route remote bits to output contacts to provide remote control of the relay outputs If you wish to pulse an output contact closed for a specific duration SEL recommends using the remote bit pulse command and SELOGIC control equations to provide secure and accurate contact control The remote device sends the rem...

Page 546: ... The breaker jumper JMP2B is in place on the SEL 311B Relay main board A5CD Fast Operate Reset Definition Block In response to an A5CD request the relay sends the configuration block for the Fast Operate Reset message Data Description A5CD Command 0E Message length 01 The number of Fast Operate reset codes supported 00 Reserved for future use Per Fast Operate reset code repeat 00 Fast Operate rese...

Page 547: ...ode for the SEL 311B PARTNO is the part number that matches the Model Option Table number CONFIG is configuration string used for SEL internal use only The ID message is available from Access Level 1 and higher DNA Message In response to the DNA command the relay sends names of the Relay Word bits transmitted in the A5D1 message The first name is associated with the MSB the last name with the LSB ...

Page 548: ...67P2 67P2T 50P3 67P3 67P3T 0AC0 50G2 67G2 67G2T 50G3 67G3 67G3T 09D3 51P 51PT 51PR Z1X 59VA MAB3 MBC3 MCA3 0B3C MAG3 MBG3 MCG3 27S 59S 59VP 59VS 0A6D SF 25A1 25A2 RCSF OPTMN RSTMN 0A70 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 0AAD 04D0 04D0 04D0 04D0 MPP1 MABC1 MPP2 MABC2 08EE 50Q1 67Q1 67Q1T 50Q2 67Q2 67Q2T 0A09 50Q3 67Q3 67Q3T 0771 51Q 51QT 51QR 071D 04D0 04D0 27A 27B 27C 59A 59B 59C 3P27 3P59 096E 27...

Page 549: ...mmand the relay sends the name string of the SER SER1 SER2 SER3 settings SNS command is available at Access Level 1 The relay responds to the SNS command with the name string in the SER settings The name string starts with SER1 followed by SER2 and SER3 For example If SER1 50G1 OUT101 SER2 67P1T SER3 OUT102 52A the name string will be 50G1 OUT101 67P1T OUT102 52A If there are more than eight setti...

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Page 551: ...I configuration message provides data for an external computer to extract data from other compressed ASCII commands To obtain the configuration message for the compressed ASCII commands available in an SEL relay type CAS CR The relay sends STX CAS n yyyy CR COMMAND 1 ll yyyy CR H xxxxx xxxxx xxxxx yyyy CR D ddd ddd ddd ddd ddd yyyy CR COMMAND 2 ll yyyy CR h ddd ddd ddd yyyy CR D ddd ddd ddd ddd dd...

Page 552: ...rs e g 10S for a 10 character string yyyy is the 4 byte hex ASCII representation of the checksum A compressed ASCII command may require multiple header and data configuration lines If a compressed ASCII request is made for data that are not available e g the history buffer is empty or invalid event request the relay responds with the following message STX No Data Available 0668 CR ETX CASCII COMMA...

Page 553: ...kV V1MEM VDC TRIG Names of elements in the relay word separated by spaces YYYY CR 240D I I I I I F F F F I F 2S 104S 0B7B CR CEV R 1 021D CR 1H FID 022C CR 1D 45S 0211 CR 7H MONTH DAY YEAR HOUR MIN SEC MSEC 0BB9 CR 1D I I I I I I I 05F4 CR 14H FREQ SAM CYC_A SAM CYC_D NUM_OF_CYC EVENT LOCATION SHOT TARGETS IA IB IC IP IG 3I2 1B59 CR 1D F I I I 6S F I 22S I I I I I I 0BAB CR 13H IA IB IC IP IG VA k...

Page 554: ...VENT Command for the definition of the Names of elements in the relay word separated by spaces field CSTATUS COMMAND SEL 311B Display status data in compressed ASCII format by sending CST CR The relay sends STX FID yyyy CR Relay FID string yyyy CR MONTH DAY YEAR HOUR MIN SEC MSEC yyyy CR xxxx xxxx xxxx xxxx xxxx xxxx xxxx yyyy CR IA IB IC IP VA VB VC VS MOF 5V_PS 5V_REG 5V_REG 12V_PS 12V_PS 15V_PS...

Page 555: ... the relay responds STX No Data Available 0668 CR ETX CEVENT COMMAND SEL 311B Display event report in compressed ASCII format by sending CEV n Sx Ly L R C parameters in are optional where n event number from 1 to 44 if LER 15 1 to 23 if LER 30 1 to 11 if LER 60 or 1 to 4 if LER 180 defaults to 1 if not specified Sx x samples per cycle 4 or 16 defaults to 4 If Sx parameter is present it overrides t...

Page 556: ...ksum FREQ is the power system frequency at the trigger instant SAM CYC_A is the number of analog data samples per cycle 4 or 16 SAM CYC_D is the number of digital data samples per cycle 4 or 16 NUM_OF_CYC is the number of cycles of data in the event report EVENT is the event type LOCATION is the fault location SHOT is the recloser shot counter TARGETS are the front panel tripping targets IA IB IC ...

Page 557: ... MAB3 MBC3 MCA3 MAG3 MBG3 MCG3 27S 59S 59VP 59VS SF 25A1 25A2 RCSF OPTMN RSTMN 79RS 79CY 79LO SH0 SH1 SH2 SH3 SH4 MPP1 MABC1 MPP2 MABC2 50Q1 67Q1 67Q1T 50Q2 67Q2 67Q2T 50Q3 67Q3 67Q3T 51Q 51QT 51QR 27A 27B 27C 59A 59B 59C 3P27 3P59 27AB 27BC 27CA 59AB 59BC 59CA MPP3 MABC3 RMB8A RMB7A RMB6A RMB5A RMB4A RMB3A RMB2A RMB1A TMB8A TMB7A TMB6A TMB5A TMB4A TMB3A TMB2A TMB1A RMB8B RMB7B RMB6B RMB5B RMB4B R...

Page 558: ...9 10 39 4 614 046F CR EVENT LOCATION HOUR_T MIN_T SEC_T MSEC_T EVENT_ID SHOT FREQ GROUP HOUR_C MIN_C SEC_C MSEC_C TARGETS BREAKER 22F6 CR TRIG 10 39 4 614 15 59 99 1 Open 0AE9 CR IA_PF IA_DEG_PF IB_PF IB_DEG_PF IC_PF IC_DEG_PF IP_PF IP_DEG_PF IG_PF IG_DEG_PF 3I2_PF 3I2_DEG_PF VA_PF VA_DEG_PF VB_PF VB_DEG_PF VC_PF VC_DEG_PF 2E41 CR 199 0 06 198 120 53 201 119 91 1 105 04 4 105 04 14 44 96 131 490 0...

Page 559: ...eous and definite time overcurrent elements SETTING NEGATIVE SEQUENCE TIME OVERCURRENT ELEMENTS Negative sequence time overcurrent element 51QT should not be set to trip directly when it is set with a low time dial setting 51QTD that results in curve times below 3 cycles see curves in Figures 9 1 through 9 10 in Section 9 Setting the Relay This is because negative sequence current can transiently ...

Page 560: ...is the source of the coordination guidelines and example given in this appendix The paper also contains analyses of system unbalances and faults and the negative sequence current generated by such conditions A F Elneweihi Useful Applications for Negative Sequence Overcurrent Relaying 22nd Annual Western Protective Relay Conference Spokane Washington October 24 26 1995 This conference paper gives m...

Page 561: ... element being dropped out or otherwise deasserted Complete listings of Relay Word bits and their descriptions are referenced in Tables 9 3 and 9 4 in Section 9 Setting the Relay Relay Word Bit Operation Example Phase Time Overcurrent Element 51PT As an example of protection element operation via the logic output of Relay Word bits a phase time overcurrent element is examined Refer to phase time o...

Page 562: ...g state 51PR 1 logical 1 If phase time overcurrent element 51PT is not fully reset the element is either Timing on its curve Already timed out Timing to reset one cycle reset or electromechanical emulation see setting 51PRS Relay Word Bit Application Examples Phase Time Overcurrent Element 51PT Common uses for Relay Word bits 51P 51PT and 51PR 51P testing e g assign to an output contact for pickup...

Page 563: ...inations of Relay Word bits to accomplish such functions as tripping circuit breakers assigning functions to optoisolated inputs operating output contacts torque controlling overcurrent elements switching active setting groups enabling disabling reclosing Traditional or advanced custom schemes can be created with SELOGIC control equations SELOGIC Control Equation Operators SELOGIC control equation...

Page 564: ... setting is labeled 52A See Optoisolated Inputs in Section 7 Inputs Outputs Timers and Other Control Logic and Close Logic in Section 6 Close and Reclose Logic for more information on SELOGIC control equation circuit breaker status setting 52A When a circuit breaker is closed the 52a circuit breaker auxiliary contact is closed When a circuit breaker is open the 52a contact is open The opposite is ...

Page 565: ...ent pickup indication Relay Word bits deassert ULTR 50L 51G NOT 50L 51G As stated previously the logic within the parentheses is performed first In this example the states of Relay Word bits 50L and 51G are ORed together Then the NOT operator is applied to the logic resultant from the parentheses If either one of 50L or 51G is still asserted e g 51G 1 logical 1 the unlatch condition is not true UL...

Page 566: ... example allow setting ER to see each transition individually Suppose a ground fault occurs and a breaker failure condition finally results Figure G 1 demonstrates the action of the rising edge operator on the individual elements in setting ER Figure G 1 Result of Rising Edge Operators on Individual Elements in Setting ER Note in Figure G 1 that setting ER sees three separate rising edges due to t...

Page 567: ...nsition as a falling edge and asserts to logical 1 for one processing interval For example suppose the SELOGIC control equation event report generation setting is set with the detection of the falling edge of an overcurrent element ER 50G1 This allows recovery from an overcurrent condition to be observed Figure G 2 demonstrates the action of the falling edge operator on the overcurrent element 50G...

Page 568: ...settings is set directly to logical 1 e g 67QTC 1 set directly to logical 1 then the corresponding overcurrent element is subject only to the directional control See Figure 3 19 in Section 3 Distance Overcurrent Voltage and Synchronism Check Elements for negative sequence overcurrent element 67QTC logic SELOGIC Control Equation Limitations Any single SELOGIC control equation setting is limited to ...

Page 569: ...operators can still be applied in the SELOGIC control equations for the particular settings group PROCESSING ORDER AND PROCESSING INTERVAL The relay elements and logic and corresponding SELOGIC control equation settings and resultant Relay Word bits are processed in a predetermined order They are processed every quarter cycle 1 4 cycle and the Relay Word bit states logical 1 or logical 0 are updat...

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Page 571: ... places 1 STIMEO Select operate time out 0 30 sec 1 0 DRETRY Data link retries 0 15 3 DTIMEO Data link time out 0 5 sec 1 MINDLY Minimum time from DCD to Tx 0 1 sec 0 05 MAXDLY Maximum time from DCD to Tx 0 1 sec 0 10 PREDLY Settle time from RTS on to Tx OFF 0 30 sec 0 PSTDLY Settle time after Tx to RTS off 0 30 sec 0 ANADB Analog reporting dead band 0 32767 counts 100 UNSOL Enable Unsolicited rep...

Page 572: ...significantly reduces communications overhead Otherwise it is necessary to enable confirmation and determine how many retries to allow and what the data link time out should be The noisier the communications channel the more likely a message will be corrupted Thus the number of retries should be set higher on noisy channels Set the data link time out long enough to allow for the worst case respons...

Page 573: ...olls and relies on unsolicited reports only Set ECLASS to a non zero value Set UNSOL Y Set NUMEVE and AGEEVE according to how often messages are desired to be sent DEVICE PROFILE The following is the device profile as specified in the DNP 3 00 Subset Definitions document DNP 3 00 DEVICE PROFILE DOCUMENT This document must be accompanied by a table having the following headings Object Group Request...

Page 574: ...while waiting for Data Link Confirm None Fixed at Variable þ Configurable Complete Appl Fragment þ None Fixed at Variable Configurable Application Confirm None Fixed at Variable þ Configurable Complete Appl Response þ None Fixed at Variable Configurable Others Attach explanation if Variable or Configurable was checked for any timeout Sends Executes Control Operations WRITE Binary Outputs Never þ A...

Page 575: ...ver þ Binary Input Change With Time Binary Input Change With Relative Time Configurable attach explanation Sends Unsolicited Responses Never þ Configurable attach explanation Only certain objects Sometimes attach explanation þ ENABLE DISABLE UNSOLICITED Function codes supported Sends Static Data in Unsolicited Responses þ Never When Device Restarts When Status Flags Change No other options are per...

Page 576: ...th Relative Time 1 6 7 8 129 17 28 10 0 Binary Output All Variations 1 0 1 6 7 8 10 1 Binary Output 10 2 Binary Output Status 1 0 1 6 7 8 129 0 1 12 0 Control Block All Variations 12 1 Control Relay Output Block 3 4 5 6 17 28 129 echo of request 12 2 Pattern Control Block 12 3 Pattern Mask 20 0 Binary Counter All Variations 1 0 1 6 7 8 20 1 32 Bit Binary Counter 20 2 16 Bit Binary Counter 20 3 32 ...

Page 577: ... 7 8 129 17 28 22 7 32 Bit Delta Counter Change Event with Time 22 8 16 Bit Delta Counter Change Event with Time 23 0 Frozen Counter Event All Variations 23 1 32 Bit Frozen Counter Event without Time 23 2 16 Bit Frozen Counter Event without Time 23 3 32 Bit Frozen Delta Counter Event without Time 23 4 16 Bit Frozen Delta Counter Event without Time 23 5 32 Bit Frozen Counter Event with Time 23 6 16...

Page 578: ...with Time 40 0 Analog Output Status All Variations 1 0 1 6 7 8 40 1 32 Bit Analog Output Status 1 0 1 6 7 8 129 0 1 7 8 40 2 16 Bit Analog Output Status 1 0 1 6 7 8 129 0 1 7 8 41 0 Analog Output Block All Variations 41 1 32 Bit Analog Output Block 3 4 5 6 17 28 129 echo of request 41 2 16 Bit Analog Output Block 3 4 5 6 17 28 129 echo of request 50 0 Time and Date All Variations 50 1 Time and Dat...

Page 579: ...htly different data map The following is the default object map supported by the SEL 311B wye connected PTs FID SEL 311B Rxxx VM Dxxxxxxxx Table H 3 SEL 311B Wye DNP Data Map DNP Object Type Index Description 01 02 000 499 Relay Word where 51 is 0 and LBOKB is 415 01 02 500 999 Relay Word from the SER encoded same as inputs 000 499 with 500 added 01 02 1000 1015 Relay front panel targets where 101...

Page 580: ...5 IC magnitude and angle 30 32 06 07 IP magnitude and angle 30 32 08 09 VA magnitude kV and angle 30 32 10 11 VB magnitude kV and angle 30 32 12 13 VC magnitude kV and angle 30 32 14 15 VS magnitude kV and angle 30 32 16 17 IG magnitude and angle 30 32 18 19 I1 magnitude and angle 30 32 20 21 3I2 magnitude and angle 30 32 22 23 3V0 magnitude kV and angle 30 32 24 25 V1 magnitude kV and angle 30 32...

Page 581: ...hot counter 30 109 111 Fault time in DNP format high middle and low 16 bits 40 41 00 Active settings group Binary inputs objects 1 and 2 are supported as defined by the previous table Binary inputs 0 499 and 1000 1023 are scanned approximately once per second to generate events When time is reported with these event objects it is the time at which the scanner observed the bit change This may be si...

Page 582: ...ed points in 0 27 will only generate an event if in addition to their dead band check the corresponding magnitude the preceding point contains a value greater than the value given by the ANADB setting Analog inputs are scanned at approximately a 1 second rate except for analogs 103 111 During a scan all events generated will use the time the scan was initiated Analogs 103 111 are derived from the ...

Page 583: ... outside of the range 1 through 6 the relay will not accept the value and will return a hardware error status Relay Summary Event Data Whenever there is unread relay event summary data fault data binary input point 1023 will be set In order to load the next available relay event summary the master should pulse binary output point 23 This will cause the event summary analogs points 103 111 to be lo...

Page 584: ... data requests with an unknown point error If the DNP command is issued with an A or B parameter at level 2 or greater the relay requests that the user enter indices for the corresponding list where a parameter of A specifies the Analog list and B specifies the Binary list The relay accepts lines of indices until a line without a final continuation character is entered Each line of input is constr...

Page 585: ... 0 0 30 0 STIMEO Number of data link retries 0 for no confirm 1 15 DRETRY Data Link Time out interval seconds 0 5 DTIMEO Minimum Delay from DCD to transmission seconds 0 00 1 00 MINDLY Maximum Delay from DCD to transmission seconds 0 00 1 00 MAXDLY Transmission delay from RTS assertion seconds OFF 0 00 30 00 PREDLY Post transmit RTS deassertion delay seconds 0 00 30 00 PSTDLY Analog reporting dead...

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Page 587: ...and are also usable as inputs to any SELOGIC control equations Further channel status information is available via the COM command Important Do not connect an unconfigured port to a MIRRORED BITS device Otherwise the relay will appear to be locked up Configure the port first then connect the device OPERATION Message Transmission All messages are transmitted without idle bits between characters Idl...

Page 588: ...ore a security counter set to two counts will delay a bit by about 1 2 power system cycle Things get a little more complicated when two relays of different processing rates are connected via MIRRORED BITS such as a SEL 321 talking to a SEL 311B The SEL 321 processes power system information each 1 8 power system cycle but processes the pickup dropout security counters as messages are received Sinc...

Page 589: ...ecent communications errors Each record will contain at least the following fields Dropout Time Date Pickup Time Date Time elapsed during dropout Reason for dropout See Message Decoding and Integrity Checks Use the COMM command to generate a long or summary report of the communications errors There is only a single record for each outage but an outage can evolve For example the initial cause could...

Page 590: ...to enable the MIRRORED BITS protocol channel B on this port For the remainder of this section PROTO MBA is assumed baud rate 300 38400 SPEED 9600 Use the SPEED setting to control the rate at which the MIRRORED BITS messages are transmitted in power system cycles based on the following table SPEED SEL 321 SEL 311B 38400 1 message per 1 8 cycle 1 message per 1 4 cycle 19200 1 message per 1 8 cycle 1...

Page 591: ... Y 2 1 Relay Z 3 2 Mirrored Bits receive default state string of 1s 0s or Xs 87654321 RXDFLT 00000X11 Use the RXDFLT setting to determine the default state the MIRRORED BITS should use in place of received data if an error condition is detected The setting is a mask of 1s 0s and or Xs for RMB1A RMB8A where X represents the most recently received valid value Mirrored Bits RMB_ Debounce PU msgs 1 8 ...

Page 592: ...te Code 20011205 SEL 311B Instruction Manual Supervise the transfer of received data or default data to RMB1A RMB8A with the MIRRORED BITS pickup and dropout security counters Set the pickup and dropout counters individually for each bit ...

Page 593: ...a streams MAKE SEQUENTIAL EVENTS RECORDER SER SETTINGS WITH CARE The relay triggers a row in the Sequential Events Recorder SER event report for any change of state in any one of the elements listed in the SER1 SER2 or SER3 trigger settings Nonvolatile memory is used to store the latest 512 rows of the SER event report so they can be retained during power loss The nonvolatile memory is rated for a...

Page 594: ...d for future use in multiple frame messages XX Response number XX 00 01 02 03 00 01 18 Function to enable 18 unsolicited Fast SER messages 0000 Reserved for future use as function code data nn Maximum number of SER records per message 01 20 hex cccc Two byte CRC 16 check code for message The SEL 311B Relay verifies the message by checking the header length function code and enabled function code a...

Page 595: ...multiple frame messages XX Response number XX 00 01 02 03 01 02 18 Function to disable 18 Unsolicited Fast SER 00 Reserved for future use as function code data cccc Two byte CRC 16 check code for message The SEL 311B Relay verifies the message by checking the header length function code and disabled function code against the expected values and checks the entire message against the CRC 16 field If...

Page 596: ...02 00000000 Four bytes reserved for future use as a return routing address dddd Two byte day of year 1 366 yyyy Two byte four digit year e g 1999 or 07CF hex mmmmmmmm Four byte time of day in milliseconds since midnight XX 1st element index match with the response to the SNS command 00 for 1st element 01 for second element and so on uuuuuu Three byte time tag offset of 1st element in microseconds ...

Page 597: ... hex of overflow message generation mmmmmmmm Four byte time of day in milliseconds since midnight FFFFFFFE Four byte end of records flag 00000000 Element status unused cccc Two byte CRC 16 checkcode for message Acknowledge Message Sent from Master to Relay and from Relay to Master The acknowledge message is constructed and transmitted for every received message which contains a status byte with th...

Page 598: ...ed A5 46 10 00 00 00 00 00 01 02 C0 XX 18 00 cc cc XX 0 1 2 3 4 Successful acknowledge from the relay for the Disable Unsolicited Data Transfer message A5 46 0E 00 00 00 00 00 00 82 00 XX cc cc XX is as same as the response number in the Disable Unsolicited Data Transfer message to which it responds 5 Successful acknowledge message from the master for a Fast SER message A5 46 0E 00 00 00 00 00 00 ...

Page 599: ...rement the response number it will wrap around to zero from three A single SER message packet from the relay can have a maximum number 32 records and the data may span a time period of no more than 16 seconds The master may limit the number records in a packet with the third byte of function code data in the Enable Unsolicited Data Transfer message function code 01 The relay may generate a Fast SE...

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Page 601: ...Format setting DATE_F MDY DAT y m d Enter date in this manner if Date Format setting DATE_F YMD EVE n Show event report number n with 1 4 cycle resolution EVE L n Show event report number n with 1 16 cycle resolution EVE R n Show raw event report number n with 1 16 cycle resolution EVE C n Show compressed event report number n for use with SEL 5601 Analytic Assistant GRO Display active group numbe...

Page 602: ...sion following Table 6 1 for more information concerning the OPE command PUL n k Pulse output contact n OUT101 OUT107 ALARM for k 1 30 seconds Parameter n must be specified k defaults to 1 if not specified Access Level 2 Commands The Access Level 2 commands allow unlimited access to relay settings parameters and output contacts All Access Level 1 and Access Level B commands are available from Acce...

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