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Underimpedance starters (UZ) up to initial pick-up

GUID-69036925-0AA6-488C-A93E-410F5C113C09 v1

The variables at the inputs of the underimpedance starters are the phase currents I

, I

and

and the residual current I

(3I

) and the phase-to-neutral voltages U

, U

and the

neutral voltage U

(3U

, U

, I

START

> 3I0min) AND

>0.25Imax) AND/OR

>3U0min)

(Iph > Imin

UPh

Z = -----------

2 x IPh

Z < Z Start

Set temp.

signals “Ph”,

“E”

All Ph-0

loops

Loop =

Phase selection

Uph Uph1 – Uph2

Z = ------------------- or Z = -------------------

1x Iph + 1 x IE Iph1 – Iph2

Z < ZStart

Log.signals =

temp.signals

END

(Iph1 > Imin)

AND

(Iph2 > Imin

Uph1 – Uph2

Z = ---------------------

Iph1 – Iph2

Z < Z Start

Set temp.

signals “Ph1”,

“Ph2”

All Ph-Ph

loops

Selectivity

conditions

Set

log. signals

18000013-IEC19000415-1-en.vsdx

IEC19000415 V1 EN-US

Figure 14: Underimpedance starters (UZ)

Depending on the setting of the parameter

Gnd Fault Mode (I

, I

AND U

, I

OR U

), the

function determines initially whether one or both of the ground fault criteria are fulfilled, that

is, whether the residual current I

exceeds the setting of the parameter

3I0min and/or the

residual voltage U

the setting of the parameter

3U0min. Should this be the case, the three

phase-to-ground loops are measured first, otherwise just the three phase-to-phase loops.

The three phase-to-ground loops are processed as follows:

If I

(or I

, or I

) is greater than I

min

, the corresponding loops are enabled and the loop

impedances calculated as follows:

Section 5

1MRK 505 406-UEN B

Bay protection functions

Bay protection functions REB500

Technical manual

Содержание Relion REB500

Страница 1: ...ions REB500 Version 8 3 IEC Technical manual t1ainm1 nu Events Measurements Disturbance records Settings 2013 03 3010 53 10 j superUser joi jectname a Mainmenu I D D i 9 J e t SettirlgS confi ation rua gr ostics rests O L 19 39f I D I D ...

Страница 2: ......

Страница 3: ...ettings 2013 03 30 10 53 10 j superUser joi jectname a Mainmenu I D D i 9 J e t SettirlgS confi ation rua gr ostics rests O L 19 39f I D I D Document ID 1MRK 505 406 UEN Issued May 2019 Revision B Product version 8 3 Copyright 2019 ABB All rights reserved ...

Страница 4: ...terms of such license This product includes software developed by the OpenSSL Project for use in theOpenSSL Toolkit http www openssl org This product includes cryptographicsoftware written developed by Eric Young eay cryptsoft com and Tim Hudson tjh cryptsoft com Trademarks ABB and Relion are registered trademarks of the ABB Group All other brand or product names mentioned in this document may be ...

Страница 5: ...product failure would create a risk for harm to property or persons including but not limited to personal injuries or death shall be the sole responsibility of the person or entity applying the equipment and those so responsible are hereby requested to ensure that all measures are taken to exclude or mitigate such risks This document has been carefully checked by ABB but deviations cannot be compl...

Страница 6: ...erning electrical equipment for use within specified voltage limits Low voltage directive 2006 95 EC This conformity is the result of tests conducted by ABB in accordance with the product standards EN 50263 and EN 60255 26 for the EMC directive and with the product standards EN 60255 1 and EN 60255 27 for the low voltage directive The product is designed in accordance with the international standa...

Страница 7: ...y inputs and outputs 13 3 1 2 2 Signal designations of BP internal signals 14 3 1 2 3 Binary input signals of BP 14 3 1 2 4 Binary output signals of BP 17 Section 4 System settings 23 4 1 Voltage transformers for bay protection 23 4 2 Star point setting for bay protection 23 4 3 Scaling factor setting for bay protection 24 Section 5 Bay protection functions 25 5 1 Distance protection 21 DIST 25 5 ...

Страница 8: ...3 Binary outputs 91 5 2 3 4 Measurements 91 5 2 4 Function settings 92 5 2 5 Parameters 92 5 2 6 Configuration 92 5 3 Inverse time overcurrent protection 51 OC 94 5 3 1 Mode of operation 94 5 3 2 Features 94 5 3 3 Inputs and outputs 95 5 3 3 1 CT VT inputs 95 5 3 3 2 Binary inputs 95 5 3 3 3 Binary outputs 95 5 3 3 4 Measurements 95 5 3 4 Function settings 95 5 3 5 Parameters 96 5 3 6 Configuratio...

Страница 9: ...6 5 Parameters 112 5 6 6 Configuration 113 5 7 Synchrocheck 25 SYNC 114 5 7 1 Mode of operation 114 5 7 2 Features 114 5 7 3 Inputs and outputs 115 5 7 3 1 CT VT inputs 115 5 7 3 2 Binary inputs 115 5 7 3 3 Binary outputs 115 5 7 3 4 Measurements 116 5 7 4 Function settings 116 5 7 5 Parameters 117 5 7 6 Configuration 121 5 7 6 1 General 121 5 7 6 2 Parameters to be set 122 5 7 6 3 Supplementary i...

Страница 10: ...ce protection 160 5 9 6 2 Choice of operating mode 161 5 9 6 3 Choice of transfer tripping scheme 161 5 9 6 4 Setting the enabling pick up levels 165 5 9 6 5 Setting the characteristic angle 166 5 9 6 6 Setting the basic time tBasic 166 5 9 6 7 Circuit breaker delay 166 5 9 6 8 Comparison time 166 5 9 6 9 Setting the wait time tWait 166 5 9 6 10 Setting the transient blocking time t TransBlk 167 5...

Страница 11: ...gration 178 5 13 Three phase current plausibility 46 I3PH 178 5 13 1 Mode of operation 178 5 13 2 Features 178 5 13 3 Inputs and outputs 179 5 13 3 1 CT VT inputs 179 5 13 3 2 Binary inputs 179 5 13 3 3 Binary outputs 179 5 13 3 4 Measurements 179 5 13 4 Function settings 179 5 13 5 Parameters 180 5 14 Three phase voltage plausibility 47 U3PH 180 5 14 1 Mode of operation 180 5 14 2 Features 180 5 ...

Страница 12: ...puts 182 5 15 3 3 Binary outputs 183 5 15 3 4 Measurements 183 5 15 4 Function settings 183 5 15 5 Parameters 183 5 15 6 Configuration 184 Table of contents 6 Bay protection functions REB500 Technical manual Copyright 2019 ABB All rights reserved ...

Страница 13: ...stallation and commissioning personnel must have a basic knowledge in handling electronic equipment 1 3 Product documentation GUID 91F0A03F D1AF 4695 A239 1FC87E7459EE v2 REB500 manuals Document numbers Product guide 1MRK 505 402 BEN Application manual 1MRK 505 399 UEN Technical manual 1MRK 505 400 UEN Operation manual 1MRK 500 132 UEN Engineering manual 1MRK 511 452 UEN Commissioning manual 1MRK ...

Страница 14: ... 1 4 2 Document conventions GUID 37C3ACF4 BD79 43C6 B37E 24B38EE69301 v2 A particular convention may not be used in this manual Abbreviations and acronyms in this manual are spelled out in the glossary The glossary also contains definitions of important terms Push button navigation in the LHMI menu structure is presented by using the push button icons For example to navigate the options use and HM...

Страница 15: ...ctrical installation National and local electrical safety regulations must always be followed The frame of the IEDs has to be carefully earthed Whenever changes are made in the IEDs measures should be taken to avoid inadvertent tripping The IEDs contain components which are sensitive to electrostatic discharge Unnecessary touching of electronic components must therefore be avoided 1MRK 505 406 UEN...

Страница 16: ...10 ...

Страница 17: ...blocking signal is cancelled and providing a starting signal is present and current is flowing the timers start again at t 0 13610_BP Trip transfer Reserved for the special application trip transfer This signal is directly activated by the bay protection unit and does not therefore appear as a binary input signal 13761_BP Start BFP L1L2L3_5 This signal is functionally identical to signal 13760_Sta...

Страница 18: ... on the local HMI 19600_Activation BP ParSet_1 The protection functions and settings assigned to parameter set 1 are active They remain active after the signal has been reset 19605_Activation BP ParSet_2 The protection functions and settings assigned to parameter set 2 are active They remain active after the signal has been reset 19610_Activation BP ParSet_3 The protection functions and settings a...

Страница 19: ...protection function specific signals 3 1 2 1 Signal designations of binary inputs and outputs GUID FE8F3DC7 0BD5 420D B714 A153E9909188 v1 The signal range of REB500 is expanded for the bay protection functions The BP function specific signal can be identified by a 6 digit signal number Example Signal 211105_DIST_Trip CB L1 211105 DIST Trip CB L1 6 Digit signal number Protection function Signal de...

Страница 20: ...l ExtBlock Z1 111235_DIST Ext Block Z1 Input for blocking measurement in the first zone Manual close 111505_DIST Manual Close Circuit breaker manual close command Isolator Open 111510_DIST Isolator Open Isolator open signal for activating the short zone logic and protection T section in 1 breaker schemes ChgMeasDir 111605_DIST Change Meas Dir Input for changing the direction of measurement DeadLin...

Страница 21: ...the synchrocheck O P s Bus 1 Active 117805_SYNC Bus 1 Active Input for remotely switching voltage channel bus 1 in double busbar stations Bus 2 Active 117810_SYNC Bus 2 Active Input for remotely switching voltage channel bus 2 in double busbar stations Override Sync 117815_SYNC Override Bypassing the synchrocheck function Operation Mode Input 1 117820_SYNC Op Mode Input 1 Inputs for remotely selec...

Страница 22: ...XT_1P3P_3P External 1P3P 3P selector for 1st AR MD1_EXT_1P3P_1P3P 118850_AR EXT_1P3P_1P3P Ext 1P3P 1P3P select for 1st AR Master Delay 118855_AR Master Delay Delay from master CB 2 and 3 denote the inputs of protection functions 2 and 3 or relays 2 and 3 in a redundant protection scheme 2 denotes the inputs for CB2 in a duplex scheme Table 15 BU_ DIREFGND input signals BP internal signal Designati...

Страница 23: ...ut signal Description Block 126205_OCINST Block Input for blocking of OCINST 3 1 2 4 Binary output signals of BP GUID F1D864A5 98AE 4329 8CF0 DEA1F988A246 v1 Table 22 BU_ DIST output signals BP internal signal Designation of binary output signal Description Trip CB L1 211105_DIST TRIP CB L1 Circuit breaker L1 phase trip This signal is disabled while a blocking signal is being applied with the exce...

Страница 24: ...T Start L1L2L3211715_DIST Start L1L2L3 Aux General distance protection starting signal OR logic for all starting signals including weak infeed Start L1 Start L1 Aux 211720_DIST Start L1 211725_DIST Start L1 Aux Distance protection L1 phase starting signal including weak infeed Start L2 Start L2 Aux 211730_DIST Start L2 211735_DIST Start L2 Aux Distance protection L2 phase starting signal including...

Страница 25: ...elayed operation of the VT supervision after 12 s Com Send 211880_DIST Com Send Signal generated when a transfer trip signal is transmitted Com Boost 211885_DIST Com Boost Signal for boosting PLC transmitting power Freq dev 211890_DIST Freq Dev Signal indicating a deviation of the memory voltage frequency Table 23 BU_OCDT output signals BP internal signal Designation of binary output signal Descri...

Страница 26: ...escription Trip 216105_OVDT TRIP Trip signal Start 216705_OVDT Start Start signal Table 28 BU_SYNC output signals BP internal signal Designation of binary output signal Description Permit To Close 217105_SYNC Permit to Close Circuit breaker closing enable signal Sync Blocked 217405_SYNC Blocked Function disabled signal Trig Blocked 217410_SYNC Trig Blocked Enable output blocked signal Start 217705...

Страница 27: ...835_AR Fourth AR 4th reclosure in progress Delay Flwr 218840_AR Delay Flwr Delay Follower CB ZExtension 218845_AR Z Extension Overreach switching signal 2 denotes the inputs for CB2 in a duplex scheme Table 30 BU_DIREFGND output signals BP internal signal Designation of binary output signal Description Trip 220105_DIREFGND TRIP Trip signal Receive Inh 220405_DIREFGND Receive Inh Input for Distance...

Страница 28: ...rt Start signal Table 34 BU_CHKI3PH output signals BP internal signal Designation of binary output signal Description Trip 224605_CHKI3PH Picked Up Trip signal Table 35 BU_CHKU3PH output signals BP internal signal Designation of binary output signal Description Trip 225605_CHKU3PH Picked Up Trip signal Table 36 BU_OCINST output signals BP internal signal Designation of binary output signal Descrip...

Страница 29: ...ctive voltage being set via HMI500 to either 100 V or 200 V Other voltages are accommodated by appropriately setting the scaling factor This menu item appears only if voltage transformers have been fitted 17000039 IEC19000402 1 en vsdx IEC19000402 V1 EN US Figure 1 Settings Voltage transformers 4 2 Star point setting for bay protection GUID E46BBD87 3168 4615 9034 73AC7E11B8E4 v1 If a REB500 bay u...

Страница 30: ...g factor 1 1 4 3 Scaling factor setting for bay protection GUID A75CBB73 281A 482A B09A C94D9D528700 v1 The scaling factor only applies to the voltage functions and not to distance protection Section 4 1MRK 505 406 UEN B System settings 24 Bay protection functions REB500 Technical manual Copyright 2019 ABB All rights reserved ...

Страница 31: ... not used for these applications 5 1 2 Features GUID C6B602BB E3EC 46F4 9602 3BF51C578BEE v1 Overcurrent or underimpedance starters polygon characteristic Directional or non directional configurable underimpedance starters 5 distance stages independently set polygon characteristics Polygon characteristic with adjustable load discrimination 6 concurrently computed measuring loops L1E L2E L3E L1L2 L...

Страница 32: ...arter L1 starter L2 starter L3 starter E starter I0 starter U0 starter I starter Z starter Overcurrent backup starter O C backup Switch onto fault starter Single phase starter CB trip L1L2L3 trip L1 trip L2 trip L3 trip Three phase trip Single phase trip Overcurrent backup trip O C backup Switch onto fault trip Trip with transfer trip signal Short zone protection trip Time 2nd step Timer Zone 2 ti...

Страница 33: ... 4 X 1 I O C backup IN 000 00 0 10 0 01 X Delay O C backup s 005 00 0 10 0 01 X Time PS block s 000 00 0 10 0 01 X 1 Either one or other of these two inputs I0 I0P can be used but not both Table 38 Starting Text Unit Default Min Max Step Setting StartMode UZ Select X PhaseSelMode solid ground Select X GndFaultMode I0 Select X IStart IN 001 00 0 5 10 0 01 X 1 Imin IN 000 20 0 1 2 0 01 X 3I0min IN 0...

Страница 34: ...ase 006 00 300 300 0 01 X R 2 ohm phase 002 00 300 300 0 01 X RR 2 ohm phase 006 00 300 300 0 01 X RRE 2 ohm phase 008 00 300 300 0 01 X K0 2 1 001 00 0 8 0 01 X K0 Angle 2 deg 000 00 180 180 0 01 X Delay 2 s 000 50 0 10 0 01 X X 3 ohm phase 010 00 300 300 0 01 X R 3 ohm phase 003 00 300 300 0 01 X RR 3 ohm phase 008 00 300 300 0 01 X RRE 3 ohm phase 010 00 300 300 0 01 X K0 3 1 001 00 0 8 0 01 X ...

Страница 35: ...up UN 000 20 0 01 0 5 0 01 X I0 minVTSup IN 000 07 0 01 0 5 0 01 X I2 minVTSup IN 000 07 0 01 0 5 0 01 X Table 41 Trip schemes Text Unit Default Min Max Step Setting ComMode off Select X TripMode 1Ph trip Select X SOTFMode off Select X SOTF10sec off Select X Weak off Select X Unblock off Select X Echo off Select X TransBl off Select X t1Block s 000 07 0 0 25 0 01 X t1TransBl s 000 05 0 0 25 0 01 X...

Страница 36: ...nput module I O C backup Phase current pick up setting of the backup overcurrent unit The function is blocked when set to zero Delay O C backup Tripping delay of the O C backup function Time PS block Determines the maximum blocking time of the power swing blocking function The power swing blocking function is blocked when set to zero Table 43 Starting Text Explanation StartMode Choice UZ underimpe...

Страница 37: ...cteristic in the tripping direction RB Resistive reach of the impedance characteristic in the restraint direction RLoad Resistive reach for avoiding load encroachment AngleLoad Limit phase angle for avoiding load encroachment Uweak Phase to neutral setting for detecting a weak infeed or a dead line for enabling manually energizing the line The function is blocked when set to zero 18000001 IEC19000...

Страница 38: ...rip Only trips if the directions during the present and the preceding times steps are in opposition DefDirMode Response at the end of the final time step definitive time Non direct Trips for faults in both directions Forwards Trips only for faults in the forwards direction BlockZ1 Zone 1 measurement blocking off on X n Pick up line reactance for Zone n X 0 for restraint direction X 0 disables the ...

Страница 39: ...ive reach for phase faults in the reverse zone RRE BACK Resistive reach for ground faults in the reverse zone 18000002 1 en vsdx R 7 14 X n R n RR n RRE n X n 8 RR n 2 RRE n 2 27 27 X IEC19000404 V1 EN US Figure 3 Distance measurement settings 1MRK 505 406 UEN B Section 5 Bay protection functions Bay protection functions REB500 33 Technical manual Copyright 2019 ABB All rights reserved ...

Страница 40: ...re 4 Reverse zone settings 18000004 1 en vsdx S1 X S2 S3 S4 SR Starter resp Final zone Delay Def R IEC19000406 V1 EN US Figure 5 Starting and distance measurement characteristic Section 5 1MRK 505 406 UEN B Bay protection functions 34 Bay protection functions REB500 Technical manual Copyright 2019 ABB All rights reserved ...

Страница 41: ...ediate reset on delayed reset U0min VTSup Pick up setting of the neutral voltage U0 for VT supervision referred to the rated VT voltage 100 3 or 200 3 U2min VTSup Pick up setting of the negative sequence voltage U2 for VT supervision referred to the rated VT voltage 100 3 or 200 3 I0min VTSup Pick up setting of the neutral current I0 for VT supervision I2min VTSup Pick up setting of the NPS curren...

Страница 42: ...er tripping modes Uweak must also be set off on Unblock Enables the deblocking logic off on only suitable for PLC Echo Enables the Echo logic for the POTT transfer tripping mode off on TransBl Enables the Transient blocking logic stabilization for reversal of power direction on double circuit lines for the POTT and BLOCK OR overreaching blocking scheme transfer tripping modes off on t1Block Waitin...

Страница 43: ...ons 5 1 6 2 Starters GUID 3570AA0F 8DE9 46B0 B18F 21CFB453AF53 v1 The distance function provides for two methods of starting that is overcurrent or underimpedance The desired method is selected by appropriately setting the parameter StartMode in the STARTERS sub menu Depending on the setting of the parameter DefDirMode a starter can also trip on its own after the time Delay Def Overcurrent starter...

Страница 44: ... next section of line max min K N Istart I I Should the above relationships result in IStart max being lower than IStart min the underimpedance starters must be used instead Underimpedance starters GUID AB1404EC 2679 4CA9 AA8B F84A320C432E v1 The underimpedance starters are enabled by selecting UZ as the StartMode parameter The following parameters then have to be set XA XB RA RB RLoad AngleLoad T...

Страница 45: ... the protected line In the case of short lines fault resistance becomes a factor to be taken into account Maximum permissible reach of the underimpedance starters The setting must take account of the considerable increase in the load current of the healthy circuit of a double circuit line when a fault on one circuit is tripped To ensure that the phase selection is correct for single phase autorecl...

Страница 46: ... GUID 052C389C 6C20 4342 BD93 8C51FCC560F8 v1 There are five alternative methods of detecting ground faults the desired one shall be selected by the setting of the parameter GndFaultMode The neutral current can either be used on its own or in conjunction with the neutral voltage The following operating modes are available I0 IE 3I0min AND IE 0 25 Imax I0 OR U0 IE 3I0min AND IE 0 25 Imax OR UE 3U0m...

Страница 47: ...e undervoltage starters are used in conjunction with the switch onto fault function and the transfer tripping schemes POTT and PUTT NONDIR The corresponding pick up value is set in relation to the rated voltage with the aid of the parameter Uweak which has a setting range of 0 to 2 UN in steps of 0 01 5 1 6 3 Measurement GUID 1C206723 EE56 4815 829C 56FD2084967D v1 All the settings for the impedan...

Страница 48: ...ximum fault current possible IB is the minimum fault current possible 1 5 are the distance relays Calculating the secondary line impedances The primary values calculated from the grading table for the line impedances have to be converted to secondary values These are obtained by applying the following relationship LP LP LS Z U I Z Z Z K K K where ZLp is the primary positive sequence line impedance...

Страница 49: ... regardless of the settings of its other parameters this zone and all following zones with the exception of the final zone are blocked For example if zone X 3 is set to zero zones 3 and 4 are blocked If in the present example the user wants to block just zone 3 this can be achieved indirectly by setting zone 3 to all the settings determined for zone 4 and blocking zone 4 by setting X 4 0 that is z...

Страница 50: ...dance plane according to the type of fault Where the value of the fault resistance RF in Ω is known it has to be entered in the R X diagram as follows phase to ground fault F 0 R R 1 k phase to phase fault F R R 2 three phase fault F R R 3 It is for this reason that fault resistance is compensated individually the parameters RRE and RR The parameter RR will generally be set lower than RRE because ...

Страница 51: ...oes not exist when starting is provided by the overcurrent starter OC Zero sequence compensation of the protected line The magnitude and phase angle of the zero sequence compensation factor are set individually for each zone using parameters k0 and k0Ang The k0 factors are calculated from the positive sequence impedance ZL and the zero sequence impedance Z0L of the line 0 0 1 3 L L L Z Z k x Z 0 0...

Страница 52: ...f the second zone is used for overreaching An overreaching zone is necessary for the switch onto fault and zone extension logics and for overreaching transfer tripping schemes Reverse zone BACK GUID 5C7E7430 152E 46A3 9CA7 2CEC0AE6519B v1 A reverse measuring zone is used in a blocking scheme and also the logic for detecting a reversal of fault energy direction It is set using the parameters X BACK...

Страница 53: ...o about 2 Delay 2 Zone 4 Delay 4 or Delay Def is normally set to at least 4 Delay 2 Special cases may require settings which deviate considerably from the above recommendations The time steps of zones 1 to 4 must have settings less than Delay Def 5 1 6 4 Definitive zone Def GUID 42A75BFC 871D 41BB A9C0 327B47EE2AB2 v1 The definitive or fifth zone is subject to the same parameters as the underimped...

Страница 54: ...SUPERVISON One of four different operating modes can be selected by using VTSupMode The function processes zero and negative sequence components which are either used on their own ZeroSeq and NegSeq or combined Zero NegSeq and Spec ZeroSeq 0 0 U I NegSeq 2 2 U I Zero NegSeq 0 0 2 2 U I U I Spec 2 0 2 U I I The four pick up values are the settings of the parameters U0min VTSup U2min VTSup I0min VTS...

Страница 55: ...Weak enables the weak infeed logic PUTT FWD Permissive underreaching transfer tripping in line direction No other parameters PUTT OR2 Permissive underreaching transfer tripping overreaching zone Zone 2 Unblock selects the enabling logic for communications channel failure POTT Permissive overreaching transfer tripping Weak enables the weak infeed logic Unblock selects the enabling logic for communi...

Страница 56: ...he setting of the parameter t1EvolFaults determines the time during which the detection of an evolving fault causes a three phase trip 5 1 6 8 Power swing blocking GUID 290AFE08 EF8B 49ED BB97 D443777923B7 v1 Only the parameter tPSblock for the time during which the power swing blocking signal is maintained has to be set in the POWER SWING BLOCKING sub menu The setting range is 0 to 10 s in steps ...

Страница 57: ...hether an isolator is open or not ComRec This input is needed for the external signal ComRec signal received by PLC optical fiber link or point to point radio ComFail This input signals to the protection that the PLC channel has failed 1PolAR This input permits single phase tripping to take place and is used in conjunction with single or three phase autoreclosure schemes See Section 5 8 for the co...

Страница 58: ...Iph is checked to determine whether it exceeds the setting of the parameter Imin current enable and also 80 of Imax In the case of the ground current IE it is checked whether it exceeds the setting of the parameter 3I0min and also 25 of Imax Depending on the setting of the parameter And Fault Mode I0 I0 AND U0 I0 OR U0 it is checked at the same time whether the residual voltage UE has exceeded the...

Страница 59: ... Imin Iph 0 8 Imax set log All phase currents IL1 IL2 IL3 IE 3I0min AND IE 0 25Imax AND OR UE 3U0min 18000012 IEC19000414 1 en vsdx IEC19000414 V1 EN US Figure 13 Overcurrent starters IStart 1MRK 505 406 UEN B Section 5 Bay protection functions Bay protection functions REB500 53 Technical manual Copyright 2019 ABB All rights reserved ...

Страница 60: ...ns Set log signals N Y J N Y 18000013 IEC19000415 1 en vsdx IEC19000415 V1 EN US Figure 14 Underimpedance starters UZ Depending on the setting of the parameter Gnd Fault Mode I0 I0 AND U0 I0 OR U0 the function determines initially whether one or both of the ground fault criteria are fulfilled that is whether the residual current IE exceeds the setting of the parameter 3I0min and or the residual vo...

Страница 61: ...sis of these signals loop selected phase Phase ground loop For a phase ground loop the impedance is calculated with a compensation factor k0 1 Ph 0 Ph 0 Ph E U Z I 1 I For example L L 1 L10 1 E U Z I 1 I Phase to phase loop For a phase to phase loop the impedance is calculated using phase to phase variables Ph Ph Ph Ph Ph Ph U Z I For example 1MRK 505 406 UEN B Section 5 Bay protection functions B...

Страница 62: ... L L L L L U U Z I I 3 1 3 1 3 1 L L L L L L U U Z I I Comparison of the three starting impedances eliminates the healthy loops selectivity condition If just one of the loop impedances lies within the underimpedance starting characteristic Zstart only the signals L1 and L2 or L2 and L3 or L3 and L1 would be set to logical 1 If more than one of the loop impedances lie within the under impedance sta...

Страница 63: ...3L1 Three phase fault L1 L2 L3 L3L1 L1L2 L2L3 In a solidly grounded system both phases involved in a phase to phase to ground fault have to trip which is not the case in ungrounded systems or systems with Petersen coils The phase to phase loops are measured In ungrounded systems or systems with Petersen coils parameter PhaseSelMode set to cyclic acyclic phase selection the loop to be measured is d...

Страница 64: ...rocessing period I and lasts until a trip signal is generated in the first zone or a maximum of one period of the power system frequency At the latest after one period of the power system frequency all six impedance loops are measured This is called processing period II during which the three phase to ground loops and the three phase to phase loops are measured alternately Comparison of the result...

Страница 65: ... be the same as that of IE This prevents a healthy parallel circuit from being adversely influenced by a fault relatively close to the relay location of the faulted circuit Assuming a fault between L1 and L2 the impedance of the phase to phase loop is calculated using the equation 1 2 1 2 1 2 L L L L L L U U Z I I It is determined almost simultaneously whether the impedance measured lies within th...

Страница 66: ...4224 9871 EB915AC3D2FD v1 Processing period II commences after the first tripping signal or at the latest one period of the system frequency after a starter picks up The variables measured are the same as those already processed during processing period I Only in the case of a cross country fault in an ungrounded system or system with Petersen coils is measurement restricted during processing peri...

Страница 67: ...tic and whether it is in the direction of the zone being measured The overreaching zone and reverse measuring zone are evaluated as part of the measurement of the first zone The corresponding tripping and other signals are processed by the system logic Tripping of the circuit breaker however only takes place after a measuring unit has operated twice 1MRK 505 406 UEN B Section 5 Bay protection func...

Страница 68: ...Z Ph 0 ZStart Z1 4 ZOR ZBack direction 18000015 IEC19000417 1 en vsdx IEC19000417 V1 EN US Figure 16 Processing period II Directional decision GUID 10744C55 5A70 473E 84CF B1D445573981 v1 Before deciding the direction of a fault the fault voltage used as reference voltage is checked to determine whether it is higher than the setting of the parameter UKmin minimum fault Section 5 1MRK 505 406 UEN B...

Страница 69: ...the fault voltage is less than the setting of the parameter Umin minimum fault voltage the impedance is determined from the fault current and a separate reference voltage arg arg arg arg ref ref ref U Z U I I where arg angle argument of the complex number Uref reference voltage Uref UL2 UL3 27 phase to ground loop L1 E Uref UL1 UL3 1 8 UL1mem UL3mem phase to phase loop L1 L2 I fault current I IL1 ...

Страница 70: ...count for the phase to ground loop and tripping is blocked In the case of the phase to phase loops tripping is either enabled or blocked depending on the setting of the parameter MemDirMode 5 1 7 3 VT supervision GUID 66C20810 64C5 419C 9A32 29BBE2A3DA00 v1 The purpose of the VT supervision function is to monitor the VT leads with respect to asymmetrical short circuits and open circuits An MCB can...

Страница 71: ...ettings of the parameters U0min VTSup U0_VTSUP I0min VTSup I0_VTSUP U2min VTSup U2_VTSUP I2min VTSup I2_VTSUP the associated binary signals U0 U2 I0 and I2 are then set to logical 1 or left at logical 0 The signals U0 and U2 are delayed by 5 ms as a precaution against incorrect blocking as a result of discrepancies between the operating times of the three circuit breaker poles Depending on the ope...

Страница 72: ...generated by the VT supervision function VTSupMode instantly blocks the distance protection function Resetting the parameter VTSupMode VTSUP_BLKDEL enables the distance function to be blocked after delay of 12 s From 12 s after the VT supervision circuit has picked up resetting of blocking is delayed by 1 s Standard MCB s can therefore be used providing their main contacts do not close before thei...

Страница 73: ...l In Out Source Drain U2_VTSUP X U2 U2 VT Sup U0_VTSUP X U0 U0 VT Sup D_L1L2L3 X Binary output Trip L1L2L3 MANCL_DIST X Binary input Manual Close HFREC X Binary input Com Rec EXTBLK_DIST X Binary input Ext Blk Dist I2_VTSUP X I2 I2 VT Sup I0_VTSUP X I0 I0 VT Sup VTSUP_BLKDEL X Input parameter Sup Blk Del On 1 Off 0 VTSUP_DEBDEL X Input parameter Sup Deb Del On 1 Off 0 VTFAIL_IU2 X Internal logic s...

Страница 74: ...tive setting 5 1 7 5 System logic Structure of the system logic GUID 1AF2E4BA F6B1 4611 A4DA ED64F2D7C3A4 v1 The system logic processes the binary input signals from external plant optocoupler inputs and all the binary signals of the distance protection function 18000018 IEC19000420 1 en vsdx IEC19000420 V1 EN US Figure 19 System logic in the distance protection function The system logic outputs a...

Страница 75: ...s Power transformer with high inrush currents at the remote end of the line In such cases fault detection involving the distance measuring units is safer Close faults with complete voltage collapse may possibly not otherwise be detected in which case the parameter MemDirMode has to be set to Trip The switch onto fault logic can be activated and the switch onto fault signal SOTF set to logical 1 in...

Страница 76: ...ves rise to three phase tripping SOTF of the circuit breaker Uweak_L1 Uweak_L2 Uweak_L3T AND CREL_L1 CREL_L2 OR DeadLine AND SOTF_10S AND 10000 200 OR 1000 AND MANCL_DIST SOTF_INI START_SOTF SOTF CREL_L3 18000020 IEC19000422 1 en vsdx 18000020 IEC19000425 1 en vsdx IEC19000422 V1 EN US Figure 21 SOFT segment Table 53 Signals SOFT see above diagram Signal In Out Source Drain Uweak_L1 X Starter UL1 ...

Страница 77: ...ircuit breakers AND 25 ISOL_OPEN TRIP_OC_L1L2L3 TRIP_STUB 18000021 IEC19000423 1 en vsdx IEC19000423 V1 EN US Figure 22 STUB segment Table 54 Signals VT STUB see above diagram Signal In Out Source Drain ISOL_OPEN X Binary input Isolator open TRIP_OC_L1L2L3 X Binary signal Trip O C TRIP_STUB X Binary signal Trip Stub Zone extension logic ZE GUID 732C90E0 C051 498E 8E01 B8BAEF2D48A1 v1 This logic en...

Страница 78: ...ogic causes the communication channel failure signal from the communication equipment optocoupler input Com Fail to be interpreted as a receive signal for 100 ms This enables tripping BIT_UNBL to take place in PUTT OR2 or POTT schemes in cases where the PLC receive signal is attenuated by the primary system fault on the line AND 20 20 AND P UNBLOCK HFREC HFFAIL BIT_UNBL 180000023 IEC19000425 1 en ...

Страница 79: ...logic PUTT_SEND transfers its output signals to a common transmit logic for PUTT POTT and BLOCK OR schemes AND PUTT ON PUTTSEND PUTT NONDIR PUTT FWD PUTT OR OR DELAY3 MEAS MAIN START LIL2L3 18000024 IEC19000427 1 en vsdx IEC19000427 V1 EN US Figure 25 PUTT_SEND segment Table 57 Signals PUTT_SEND see above diagram Signal In Out Source Drain PUTT_NONDIR PUTT_FWD PUTT_OR X Setting Com Mode PUTT non d...

Страница 80: ... tripping criterion to the entire underimpedance starting characteristic PUTT non directional PUTT_NONDIR starting in forwards direction PUTT Forwards PUTT_FWD or the overreaching of 2nd zone PUTT OR2 PUTT_OR2 AND AND OR AND OR OR AND AND AND OR OR OR PUTT_NONDIR START_L1L2L3 PUTT_OR MEAS_OR2 PUTT_FWD UZ_FWD DELAY2 M_OWN BIT_UNBL HFREC P_WEAK 100 100 AND AND TRIP_PUTT UWEAK_PUTT UWEAK_L1_PUTT UWEA...

Страница 81: ... tripping logic TRIP1 UWEAK_L3_PUTT X Internal signal to tripping logic TRIP1 Permissive overreaching transfer tripping POTT GUID 0BCB973B 50BB 4274 B7A5 6E26D6CDC88D v1 The POTT logic is divided into a receive logic POTT_REC and a transmit logic POTT_SEND The receive logic POTT_REC transfers its output signals to the tripping logic Account is taken of any weak infeed Weak UWEAK_L1 L2 L3 a short e...

Страница 82: ...ND OR P_POTT POTT_ON MEAS_OR2 BIT_TBE DELAY2 P_ECHO 100 EXTBLK_HF HFREC 150 POTT_SEND MEAS_BWD M_OWN 18000026 IEC19000430 1 en vsdx IEC19000430 V1 EN US Figure 27 POTT_SEND segment Table 59 Signals POTT_SEND Signal In Out Source Drain P_POTT X Setting Com Mode POTTP_POTT 1 MEAS_OR2 X Binary output Meas Oreach BIT_TBE X Internal logic signal TRANSBL DELAY2 X Binary output Delay 2 P_ECHO X Setting E...

Страница 83: ...6F 41AD B91E B5B03E15C4C6 v1 OR AND OR AND OR AND OR OR 200 20 200 5000 AND AND MEAS_OR2 BIT_UNBL HFREC BIT_TBE DELAY2 M_OWN EXTBLK_HF MEAS_BWD UWEAK_L1 UWEAK_L2 UWEAK_L3 P_WEAK TBA_POTT TRIP_POTT UWEAK_POTT UWEAK_L2_POTT UWEAK_L3_POTT 18000027 IEC19000431 1 en vsdx UWEAK_L1_POTT IEC19000431 V1 EN US Figure 28 POTT_REC segment 1MRK 505 406 UEN B Section 5 Bay protection functions Bay protection fu...

Страница 84: ... TRIP1 UWEAK_L1_POTT X Internal signal to tripping logic TRIP1 UWEAK_L2_POTT X Internal signal to tripping logic TRIP1 UWEAK_L3_POTT X Internal signal to tripping logic TRIP1 Overreaching blocking scheme BLOCK OR GUID 26BC59BE 2C94 4675 A3EA E6724D37FEAC v1 The BLOCK OR logic is divided into a receive logic BLOC_REC and a transmit logic BLOC_SEND The output signals from the receive logic BLOC_REC ...

Страница 85: ...dx OR IEC19000433 V1 EN US Figure 29 BLOC_SEND segment Table 61 Signals BLOC_SEND Signal In Out Source Drain P_BLOCK X Setting Com Mode BLOCK OR P_BLOCK 1 HFFAIL X Binary input Com Fail BIT_TBE X Internal logic signal TRANSBL MEAS OR2 X Binary output Meas Oreach DELAY2 X Binary output Delay 2 MEAS_BWD X Binary output Meas Bward EXTBLK_HF X Binary input Com Rec BLOCK_ON X Internal signal to the dis...

Страница 86: ...HFREC X Binary input Com Rec TRIP_BLOCK X Internal signal to tripping logic TRIP2 where it is compared with all the tripping conditions to generate the binary signals Trip L1 Trip L2 etc TBA_BLOCK X Internal logic signal TRANSBL Reversal of power direction TRANSBL GUID 967B11E2 07FE 4A97 BAE5 7A1B47E5868E v1 This logic is only used in conjunction with a permissive over reaching transfer tripping s...

Страница 87: ...te end A1 A2 B2 B1 CB A1 opens before CB B1 opens Relay A2 detects the fault in the OR zone but still receives a signal from the remote end for example it trips and opens the Healthy line 18000030 IEC19000435 1 en vsdx IEC19000435 V1 EN US Figure 31 Reversal of power direction The operation of the logic is as follows POTT solution 1MRK 505 406 UEN B Section 5 Bay protection functions Bay protectio...

Страница 88: ...everse measurement signal MEAS_BWD is maintained for at least T1 setting t1TransBl and resets at the latest after T2 setting t2TransBl The purpose of T2 is to ensure that blocking is maintained should there be autoreclosure of the faulted circuit T1 allows time for the incorrect Com Rec signal to reset Its setting is thus given by the reset time of relay B2 and the reset time of the communication ...

Страница 89: ...ching blocking scheme BLOCK OR OR OR OR AND OR AND AND PUTT_ON POTT_ON BLOCK_ON PUTT_SEND POTT_SEND BLOCK_SEND UWEAK_L1 UWEAK_L2 UWEAK_L3 2000 START_L1L2L3 DISTBL BIT_HF_ON HF_SEND HF_BOOST 18000032 IEC19000437 1 en vsdx IEC19000437 V1 EN US Figure 33 TRANSBL segment Table 63 Signals TRANSBL Signal In Out Source Drain PUTT_ON X PUTT logic POTT_ON X POTT logic BLOCK_ON X BLOCK logic PUTT_SEND X PUT...

Страница 90: ... signal is being generated by the enable and blocking logic this signal cannot block tripping by the back up overcurrent unit or short zone logic Only single phase tripping will take place when Trip Mode is set to 1 Ph Trip The starter of just one phase has picked up None of the conditions for three phase tripping is fulfilled Any of the following conditions results in three phase tripping Trip Mo...

Страница 91: ...SEL_L1 X Phase sel L1 UWEAK_L1_PUTT X PUTT UWEAK_L1_POTT X POTT START_L1 X Start L1 PHSEL_L2 X Phase sel L2 UWEAK_L2_PUTT X PUTT UWEAK_R_POTT X POTT START_L2 X Start L2 PHSEL_L3 X Phase sel L3 UWEAK_L3_PUTT X PUTT UWEAK_L3_POTT X POTT START_L3 X Start L3 OC_L1SL3 X Start O C Backup BIT_L1 X TRIP3 TRIP2 SIG_L1 X Binary output Start L1 BIT_L2 X TRIP3 TRIP2 SIG_L2 X Binary output Start L2 BIT_L3 X TR...

Страница 92: ...nals TRIP 2 Signal In Out Source Drain Signal In Out Source Drain BIT_L1 X TRIP1 BIT_L2 X TRIP1 BIT_L3 X TRIP1 P_L1L2L3 X TRIP1 DL1L2L3 X Binary output TRIP L1L2L3 P_T1_TRIP X Setting t1 Evol Faults OC_D X Binary output Trip O C SOTF X Binary output Trip CB TRIP_STUB X STUB TRIP_3PH X Setting Trip Mode AR_1POL_IN X Binary input 1 pol AR BIT_3P X TRIP3 Section 5 1MRK 505 406 UEN B Bay protection fu...

Страница 93: ... M_OWN REL_DH 18000035 IEC19000440 1 en vsdx IEC19000440 V1 EN US Figure 36 TRIP 3 segment Table 66 Signals TRIP 3 Signal In Out Source Drain SOTF X SOTF ZE_FOR_DIST X Binary input ZExtension AR_ZE X Binary input ZExtensionarAR MEAS_OR2 X Binary output Meas Oreach START_L1L2L3 X Binary output Start L1 L2 L3 TRIP_STUB X STUB Table continues on next page 1MRK 505 406 UEN B Section 5 Bay protection f...

Страница 94: ...CK POTT PUTT D X Binary output TRIP CB DL1 X Binary output TRIP CB L1 DL2 X Binary output TRIP CB L2 DL3 X Binary output TRIP CB L3 Trip 4 GUID B6D5C506 FA0F 441A 8B86 1A14A44CB930 v1 OR AND AND AND AND OR AND 8 REL_DH DL1 DL2 DL3 DH DL1L2L3 D3PH D1PH 18000036 IEC19000441 1 en vsdx IEC19000441 V1 EN US Figure 37 TRIP 4 segment Section 5 1MRK 505 406 UEN B Bay protection functions 88 Bay protection...

Страница 95: ...p The power swing blocking function does not influence the operation of the back up overcurrent function When power swings occur the electrical parameters of the system vary at a slower or faster rate in relation to the angle δ be tween the voltage vectors of the energy sources in different parts of the system In the case of a fault on the other hand step changes of these parameters take place The...

Страница 96: ... U cosϕ in relation to time only occurs once and at a much higher rate than the function s operating range Slow swings are evaluated over five periods by a second system At its lowest operating limit this system detects a frequency of 0 2 Hz Together the two systems cover a range from 0 2 to 8 Hz and no setting is required during commissioning The blocking signal PSB is maintained for as long as t...

Страница 97: ...n or for monitoring a current minimum 5 2 2 Features GUID 0F07ECF4 7210 44FF A17D 97F403D140FB v1 Insensitive to DC component Insensitive to harmonics Single or three phase measurement Maximum respectively minimum value detection in the three phase mode Detection of inrush currents 5 2 3 Inputs and outputs 5 2 3 1 CT VT inputs GUID F644DFAA 0B84 4353 9F19 FE8FD67FE590 v1 Current 5 2 3 2 Binary inp...

Страница 98: ... blocking Settings MIN 3ph Undercurrent Three phase functions detect the highest phase current Not permitted for single phase functions MIN 1ph Undercurrent Three phase functions detect the lowest phase current MAX 3ph Overcurrent Three phase functions detect the lowest phase current Not permitted for single phase functions MAX 1ph Overcurrent Three phase functions detect the highest phase current...

Страница 99: ...tching operations and load surges into account 18000038 IEC19000443 1 en vsdx I 0 t I N I I Setting Delay IEC19000443 V1 EN US Figure 39 Operating characteristic of the definite time over current function Compensating any difference between the rated currents of CT IN1 and protected unit IGN is recommended This is achieved with the aid of the reference value of the A D channel or by correcting the...

Страница 100: ...when the amplitude of the fundamental component of the current exceeds the current function setting The inrush detector is based on the evaluation of the second harmonic component of the current I2h in relation to the fundamental frequency component I1h evaluation of the amplitudes The output of the function is disabled when the ratio I2h I1h exceeds 10 and enabled again when it falls below 8 Ther...

Страница 101: ...C864F19B CB26 4E35 81D0 736E8B679554 v1 Current amplitude 5 3 4 Function settings GUID 784F9416 151F 42BE 9371 39A4C1D7E75F v1 Table 70 Inverse time overcurrent function settings Text Unit Default Min Max Step ParSet4 1 P1 Select c Setting 1 00 Select k1 Setting s 013 5 0 01 200 0 0 01 IStart IB 1 10 1 00 4 00 0 01 t min s 00 00 0 0 10 0 0 1 NrOfPhases 1 1 3 2 CurrentInp CT VT Addr 0 IB Setting IN...

Страница 102: ...s have to be set Base current IB Setting Characteristic enabling current IStart Type of characteristic c Setting Multiplier k1 Setting The Inverse time overcurrent function is used to protect transformers feeders and loads of the auxiliaries supply system against phase and earth faults The function responds largely only to the fundamental component of the fault current Base current IB Setting The ...

Страница 103: ...nabling the characteristic IStart The characteristic is enabled when the current exceeds the setting IStart A typical setting for IStart is 1 1 IB Choice of characteristic c Setting The constant c Setting determines the shape of the characteristic The settings for the standard characteristics according to BS 142 are normal inverse c 0 02 very inverse and long time earth fault c 1 00 extremely inve...

Страница 104: ...5 s at 6 times the base current IB is required the factor k1 for each of the relays is given by k1 5 t For operating times between 0 5 and 2 5 s this results in the following settings for k1 t s k1 s 0 5 2 5 1 5 1 5 7 5 2 10 2 5 12 5 The characteristics according to BS 142 are set as follows normal inverse k1 0 14 s very inverse k1 13 5 s extremely inverse k1 80 s long time earth fault k1 120 s Ty...

Страница 105: ... CT VT inputs GUID B92FE713 87AB 48C5 B7E3 B2C694BEF819 v1 Current Voltage 5 4 3 2 Binary inputs GUID 35EB42DC C990 4FAD A2BB F917C4FD096A v1 Blocking PLC receive 5 4 3 3 Binary outputs GUID 4742C8ED 8E75 406E 8618 E7BF2947A0F1 v1 Start Start L1 Start L2 Start L3 Forwards measurement Backwards measurement Tripping 5 4 3 4 Measurements GUID 67F086A8 8A33 44FD AC5C 097F44217914 v1 Current amplitude ...

Страница 106: ...rectional overcurrent definite time function parameters Signal Description ParSet4 1 Parameter for determining in which set of parameters a particular function is active CurrentInp Defines the CT input channel Only three phase CTs can be set VoltageInp Defines the VT input channel Only three phase VTs can be set I Setting Pick up setting for tripping Angle Characteristic angle Delay Delay between ...

Страница 107: ...acteristic angle Angle Delay Delay Time allowed for receipt of signal tWait Response at the end of the memorized power direction time MemDirMode Time during which the memorized direction is valid MemDuration Pick up value I Setting I Setting must be selected high enough to prevent false tripping or alarms from taking place and low enough to reliably detect the minimum fault current The setting mus...

Страница 108: ...e setting For example assuming IGN 800 A and IN1 1000 A the setting to pick up at 1 5 IGN 1200 A should be 1 800 1 5 1 5 1 2 1000 GN N I A I A Characteristic angle Determining the phase angle of the current provides an additional criterion for preserving discrimination compared with non directional overcurrent protection The directional sensitivity is 180 in relation to the reference voltage This ...

Страница 109: ...ase to phase values are calculated for Y connected VTs VT type UTS while the input voltages are used directly for delta connected VTs VT type UTD Delay The delay enables the protection to be graded with other time overcurrent relays to achieve discrimination Its setting is thus chosen in relation to the timer settings of upstream and down stream protective devices The zone of protection covered by...

Страница 110: ...valid direction is used for an adjustable period MemDirMode provides facility for setting how the protection must respond after this time or in the event that the circuit breaker is closed onto a fault and no voltage could be memorized beforehand The two possible settings are the protection can trip or it can block Time during which the memorized direction is valid The MemDuration setting determin...

Страница 111: ...A2D3 FAEF 4F61 B7A1 1C8C6BA71BB7 v1 Current amplitude Amplitude of the three phase currents IL1 IL2 IL3 Active power A positive measurement indicates the forwards direction IL1 UL2L3 IL2 UL3L1 IL3 UL1L2 Voltage amplitude Amplitudes of the phase to phase voltages UL2L3 UL3L1 UL1L2 5 5 4 Function settings GUID E0DE2E94 EF62 4944 AE37 55CC917D3A30 v1 Table 75 Directional overcurrent inverse time func...

Страница 112: ...gle c Setting Setting for the exponential factor determining the operating characteristic according to BS 142 k1 Setting Constant determining the parallel shift of the characteristic time grading t min Definite minimum operating time operating characteristic constant IB Setting Base current for taking account of differences of rated current IN twait Time allowed for the directional decision to be ...

Страница 113: ...the position of the characteristic is chosen such that it is above the load current The function however has a base current setting which is set to the full load current IB1 of the protected unit The base current setting determines the position of the basic characteristic The characteristic is enabled when the base current is exceeded by a preset amount IStart The adjustment of the base current IB...

Страница 114: ... long time earth fault c 1 00 extremely inverse c 2 00 t I IStart IB t k1 I IB c 1 t min 18000042 IEC19000447 1 en vsdx IEC19000447 V1 EN US Figure 43 Operating characteristic of the directional overcurrent inverse time function Multiplier k1 Setting The multiplier k1 Setting enables the directional overcurrent inverse time characteristic to be shifted This is used for grading a series of relays a...

Страница 115: ...se k1 0 14 s very inverse k1 13 5 s extremely inverse k1 80 s long time earth fault k1 120 s Characteristic angle Determining the phase angle of the current provides an additional criterion for preserving discrimination compared with non directional overcurrent protection The directional sensitivity is 180 in relation to the reference voltage This is illustrated in the following diagram 1MRK 505 4...

Страница 116: ...pe UTS while the input voltages are used directly for delta connected VTs VT type UTD Time allowed for a signal to be received Where directional functions are configured in both line terminals each can send a signal from the MeasBwd output to the Receive input of the function at the opposite end of the line for example via a PLC channel when it is measuring a fault in the reverse direction This si...

Страница 117: ...he MemDuration setting determines how long the last valid direction measurement shall be used The setting should be as short as possible 200 ms when the function is being used as backup for a distance function in an HV power system because an actually measured voltage is only available during this time and therefore it is only possible to detect a reversal of direction during this time For longer ...

Страница 118: ...determining in which set of parameters a particular function is active Delay Time delay between the function picking up and tripping V setting Voltage setting for tripping MaxMin Over or undervoltage mode selection Settings MIN 3ph Undervoltage Three phase functions detect the highest phase voltage Not permitted for single phase functions MIN 1ph Undervoltage Three phase functions detect the lowes...

Страница 119: ... of the VT phase to neutral voltage Compensating any difference between the rated voltages of VTs UN1 and protected unit UGN is recommended This is achieved with the aid of the reference value of the A D channel or by correcting the voltage setting For example for UGN 12 kV and UN1 15 kV the setting for a pick up voltage of 1 4 UGN should be 1 12 1 4 1 4 1 12 15 GN N U kV U kV MaxMin This paramete...

Страница 120: ...lectrical systems and providing the corresponding limits are satisfied enabling them to be connected in parallel 5 7 2 Features GUID 77360B06 0E90 4F91 9363 5FA0E9CF3BA9 v1 Monitoring synchronism Single phase voltage measurement Comparison of the voltages dU phase shift dPh and frequencies df of two voltage vectors Calculation of the corresponding differences between the voltage vectors in the com...

Страница 121: ... A0A1 7DD8B563FD8F v1 2 inputs for enabling the synchrocheck function ReleaseInp1 and ReleaseInp2 3 inputs for interlocking the synchrocheck O Ps BlckTrigBus1 BlckTrigBus2 and BlckTrigLine 1 input for bypassing the synchrocheck function OverridSync 2 inputs for remotely selecting operating mode OpModeInp1 and OpModeInp2 2 inputs for remotely switching voltage channels in double busbar stations uBu...

Страница 122: ... 1 4 P1 Select maxVoltDif UN 0 20 0 05 0 40 0 05 maxPhaseDif deg 10 0 05 0 80 0 05 0 maxFreqDif Hz 0 20 0 05 0 40 0 05 minVoltage UN 0 70 0 60 1 00 0 05 maxVoltage UN 0 30 0 10 1 00 0 05 Operat Mode only SynChck Select supervisTime s 0 20 0 05 5 00 0 05 t Reset s 0 05 0 00 1 00 0 05 uBusInp Ph 1ph L1 L2 Select uBusInput1 AnalogAddr 0 uBusInput2 AnalogAddr 0 uLineInp Ph 1ph L1 L2 Select uLineInput ...

Страница 123: ...function is active maxVoltDif Max permissible voltage difference dU between the phases used for checking synchronism maxPhaseDif Max permissible phase shift dPh between the voltages of the phases used for checking synchronism maxFreqDif Max permissible difference of frequency df between the phases used for checking synchronism minVoltage Voltage level for discriminating between busbar and line bei...

Страница 124: ...if selected uBusInput2 uBusInput1 1st voltage I P channel on the busbar side This must agree with the phase chosen uBusInp Ph uBusInput2 2nd voltage input channel if applicable on the busbar side This must agree with the chosen phase uBusInp Ph and must agree with the voltage of uBusInput1 If a second input is not configured the function only takes account of the first voltage I P channel uBusInpu...

Страница 125: ... F input disabled T input continuously enabled xx all binary inputs or outputs of protection functions PermitToClose Signal indicating that the synchrocheck function is enabling closure of the circuit breaker It is generated at the end of the measuring period supervisTime and remains active for as long as the synchronism conditions are fulfilled or until a blocking signal is received or the synchr...

Страница 126: ...g inputs are connected internally to an OR gate and the CB close enabling outputs are blocked if one of them is set to TRUE T 3 See Table 84 Table 82 uBus1Activ uBus2Activ uBus1Activ uBus2Activ Selected voltage input T TRUE F FALSE uBusInput1 active F FALSE T TRUE uBusInput2 active Other conditions The previous blocking input remains active Table 83 BlkSynchBus1 BlkSynchBus2 BlkSynchLine uBus1Acti...

Страница 127: ...r the adjustable time supervisTime According to the operating mode Operat Mode selected the function also permits de energized parts of a power system to be coupled Provision is also made for switching between voltage inputs belonging to the busbars of a double busbar station by appropriately controlling two binary inputs uBus1Activ and uBus2Activ Note that the function can only check the synchron...

Страница 128: ...on the line side BlckTrigBus1 BlckTrigBus2 Inputs for blocking the synchro BlSyncLine check function by the VT fuse failure equipment uBus1Activ uBus2Activ Binary inputs for switching between the analogue busbar voltage inputs in accordance with the configuration of the isolators mimic busbar 5 7 6 2 Parameters to be set GUID 658DA938 FF60 44EA BB99 96C62BC6136C v1 Max voltage difference dU maxVol...

Страница 129: ...e the analogue values are first filtered by a digital Fourier bandpass filter to obtain the fundamentals and then the orthogonal components UBus and ULine are derived The phase shift dPh between the voltages and the difference between their amplitudes dU are calculated from the corresponding vector diagram in the complex plane Synchrocheck function Monitoring the conditions for synchronism 1800004...

Страница 130: ...an be either based on monitoring a single phase or all three phases depending on how the particular AnalogAddr is configured If the three phases are included then the highest voltage of the three is detected for the maximum limit respectively the lowest of the three for the minimum limit In order to be able to monitor the voltages in a wide frequency range instantaneous values are measured instead...

Страница 131: ...the five operating modes can be selected by external signals applied to two of the function s binary inputs OpModeInp1 and OpModeInp2 Table 86 Operating modes selected by external signals Binary input signals Operating Mode OpModeInp1 OpModeInp2 F FALSE F FALSE Mode specified in the control program Operat Mode F FALSE T TRUE Synchrocheck OR bus dead AND line live T TRUE F FALSE Synchrocheck OR bus...

Страница 132: ...e which is initiated at the end of the pick up time is the period during which all the conditions for synchronism must be continuously fulfilled to permit closure of the circuit breaker The timer is reset should one of the parameters move out of the permissible range Providing they all remain within their preset ranges the enable signal PermitToClose is issued at the end of the measuring period Es...

Страница 133: ... the synchronism conditions are no longer fulfilled the enabling signal output PermitToClose and the pick up signal reset after the time set for t Reset This ensures a CB closing signal can be maintained for a certain minimum time Typical value t Reset 50 ms Where high slip frequencies df are to be expected t Reset must be short enough to prevent the phase shift from exceeding the set permissible ...

Страница 134: ... BlckSyncLine F FALSE T TRUE BlckSyncBus2 and BlckSyncLine Other combinations of the states of these two inputs do not influence the blocking inputs and the prevailing situation is maintained If only one busbar voltage input is configured all the blocking I Ps BlkSyncBus1 BlkSyncBus2 and BlckTrigLine are enabled regardless of the states of the binary I Ps uBus1Activ and uBus2Activ The active block...

Страница 135: ...be generated immediately regardless of whether the conditions for synchronism are fulfilled or not This input overrides all other blocking or enabling inputs 5 8 Autoreclosure 79 AR GUID C9F0769D 51E8 4D70 857D 019C7F3C578F v1 5 8 1 Mode of operation GUID 866541F5 4D5B 4E45 8A2C 468F6825B5E4 v1 The function can be configured for single or three phase auto reclosure The unit can operate in conjunct...

Страница 136: ...hrocheck 2 SynchroChck2 Dead line Dead Line Dead line 2 Dead Line2 External blocking input ExtBlkAR Conditional blocking input CondBlkAR Manual close blocking input Manual Close External synchrocheck bypass Ext SCBypas External extension of dead time Extend t1 Delay from master CB MasterDel Block from master CB MasterUnsucc Block reclosure by follower redundant scheme Inhibit Inp External 1P 1P se...

Страница 137: ... in a duplex scheme 5 8 3 4 Measurements GUID FC4B02BD 9787 4B7B 870B 725CAE54A890 v1 None 5 8 4 Function settings GUID EFD006C2 2320 4D06 BF6F D1EF2609EFFE v1 Table 87 Autoreclosure function settings Text Unit Default Min Max Step ParSet 4 1 P1 Select 1 AR Mode 1P3P 1P3P Select 2 4 AR Mode off Select t Dead1 1P s 001 20 0 05 300 0 01 t Dead1 3P s 000 60 0 05 300 0 01 t Dead1 Ext s 001 00 0 05 300...

Страница 138: ...p BinaryAddr Always off Extend t1 BinaryAddr Always off MD1 EXT 1P 1P BinaryAddr Always off MD1 EXT 1P 3P BinaryAddr Always off MD1 EXT 1P3P 3P BinaryAddr Always off MD1 EXT 1P3P 1P3P BinaryAddr Always off Close CB SignalAddr Trip 3 Pol SignalAddr Def Trip SignalAddr AR Ready SignalAddr AR in Prog SignalAddr AR Blocked SignalAddr First AR 3P SignalAddr First AR 1P SignalAddr Second AR SignalAddr T...

Страница 139: ...e dead time initiated by single phase trip no reclosure for phase faults 1 1P3P 3P three phase trip and reclosure for earth and phase faults three phase dead time 1 1P3P 1P3P single phase trip and reclosure for ground faults single phase dead time three phase trip and reclosure for phase faults three phase dead time Ext Wahl External selection by the binary inputs MD1_EXT_1P_1P MD1_EXT_1P_3P MD1_E...

Страница 140: ...ignal In redundant protection schemes the general tripping signal from the 2nd protection is connected to this input Set to off F or False if not needed Trip CB2 Input for the general trip signal In redundant protection schemes the general trip signal from the 2nd protection is connected to this input Set to off F or False if not needed Start 3 Input for the AR start signal The general start signa...

Страница 141: ...ed to more than one input the next mode in the list is the one that is active The autoreclosure function is blocked if none of the inputs is used Close CB CB close signal Trip 3 Pol Signal to the distance function so that it can only carry out a three phase trip This signal is inverted and connected to the distance protection I P 1P AR This signal is active in many situations but particularly when...

Страница 142: ...ching ZExtension signal inactive ZE 1 AR Distance relay reach after the first reclosure attempt on overreaching ZExtension signal active off underreaching ZExtension signal inactive ZE 2 AR Distance relay reach after the second reclosure attempt on overreaching ZExtension signal active off underreaching ZExtension signal inactive ZE 3 AR Distance relay reach after the third reclosure attempt on ov...

Страница 143: ...on T or True if not needed not fitted and Dead line 2 or ExtSCBypas not used Input logic for enabling the close command synchrocheck2 AND CO Ready 2 OR Dead line 2 OR ExtSCBypas Dead line 2 Input indicating that line 2 is de energized CB2 open and VTs 2 on the busbar side Set to off F or False if not needed An active input overrides the following logical relationship of the inputs synchrocheck 2 A...

Страница 144: ...p 3 Pol signal informs the distance protection whether it should perform a single or a three phase trip The ZExtension signal switches the distance protection s over reaching zone on and off Where the SOTF logic is not required to operate during autoreclosure connect the AR in prog signal to the ExtBlkSOTF binary input of the distance function The SOTF 10 s timer in the distance function s SOTF lo...

Страница 145: ...se must be set longer than the maximum operating time of the activated graded overcurrent functions tClose from AR function tmax overcurrent time delay In cases where the zone extension signal is used in conjunction with overcurrent functions the terms overreach and underreach have the following meanings overreach enabling of an overcurrent function having a short non graded time delay underreach ...

Страница 146: ...B500sys bay unit The starting signals Start L1L2L3 and tripping signals Trip CB and Trip CB 3P generated by the REB500sys distance function UZ 2 are connected to their own autoreclosure function AR 2 and to the autoreclosure function AR 1 The corresponding signals from the external distance protection UZ 1 are only connected to the external autoreclosure device AR 1 On the other hand the signal fr...

Страница 147: ...lAR ZExtensionAR AR 1 Start Trip CB Trip CB 3P Trip 3 Pol ZExtension CB open CB Manual Close CO Ready Close CB Ext Blk AR AR Ready 1 1 1 1 IEC19000456 V1 EN US Figure 52 Coordinating autoreclosure of main protection 1 with main protection 2 5 8 6 5 Timers GUID 6CEC8BC6 7684 4944 B5AB AF62A7DDC672 v1 The timers have setting ranges extending up to 300 s in steps of 10 ms The purpose of each of the t...

Страница 148: ... fault duration is set using parameter t Oper The timer for the fault duration is started by the pick up signal from the protection function Start Faults resulting in tripping after t Oper are locked out Def Trip and reclosure does not take place Should the fault duration time expire before the protection trips autoreclosure is blocked and the reclaim time is started Example Time T Oper Delay 2 of...

Страница 149: ... three phase trip that is every second trip by the distance protection function trips all three phases The autoreclosure function also signals the switchover to three phase tripping by exciting the signal Trip 3 Pol at the end of the fault discrimination time t Discrim 1P It is advisable to set the time t1EvolFaults longer than the autoreclosure dead time t Dead1 1P t Timeout The parameter t Timeo...

Страница 150: ...nputs is not used it must be set to TRUE An active CB ready signal informs the autoreclosure function that reclosure is permissible that is sufficient energy is available for a full open close open cycle Once a reclosure cycle has started this signal is ignored because the pressure varies during a reclosure cycle of an air blast breaker Resetting of this signal is internally delayed by 100 ms The ...

Страница 151: ...tch onto fault SOTF protection or by a directional ground fault protection via PLC To prevent the SOFT from initiating autoreclosure the distance protection SOFT start signal must be connected to the CondBlkAR input Manual close The reclosure function is immediately blocked for the blocking time t AR Block by a Manual close signal This signal is also needed for the overreaching logic to switch the...

Страница 152: ...ose command during the time t Close 300 ms switches the dead time step second third and fourth AR or initiates a lock out trip depending on the setting A close command is reset immediately after a trip Definitive trip Def Trip The Def Trip signal indicates that the circuit breaker will remain tripped and no further reclosure attempts will be made The following conditions can cause a definitive tri...

Страница 153: ...o overreach either before fault occurrence or for the following reclosure attempt otherwise the distance relay is set to underreach With the exception of its first change of state when setting the ZEPrefault parameter to ON it resets together with the signal Trip CB or Trip CB 3P this signal picks up and resets together with the Close CB signal The distance relay is switched to overreaching for a ...

Страница 154: ...nhibit t Dead1 1P time t Oper Trip 3 Pol t Discrim 1P Unsuccessful AR Successful AR t Close 300 ms IEC19000457 V1 EN US Figure 53 Timing diagram for a single or double busbar arrangement with one distance and one AR function Response for ground fault Settings 1 AR Mode 1P 1P or 1P3P 1P3P 2 4 AR Mode off ZE Prefault on ZE 1 AR off Section 5 1MRK 505 406 UEN B Bay protection functions 148 Bay protec...

Страница 155: ...ing fault within t Dead1 1P but after t Di s crim1P Close CB ZExtension Def Trip First AR 1P AR in Prog AR Ready AR Blocked Trip 3 Pol t Discrim 1P IEC19000458 V1 EN US Figure 54 Timing diagram for a single or double busbar arrangement with one distance and one AR function Response for a ground fault which evolves Settings 1 AR Mode 1P3P 1P3P 2 4 AR Mode off ZE Prefault on ZE 1 AR off 1MRK 505 406...

Страница 156: ... t Dead2 t Dead3 Trip 3 Pol AR in Prog AR Ready AR Blocked t Dead1 3P t Dead2 t Dead3 t Inhibit Trip 3 Pol 300 ms IEC19000459 V1 EN US Figure 55 Timing diagram for a single or double busbar arrangement with one distance and one AR function Response for phase faults Settings 1 AR Mode 1P3P 1P3P 2 4 AR Mode 3AR ZE Prefault on ZE 1 AR off ZE 2 AR on ZE 3 AR off Section 5 1MRK 505 406 UEN B Bay protec...

Страница 157: ...locked t inhibit t De ad1 1P time t Oper Trip 3 Pol t D iscrim 1P t clo se 300 ms IEC19000460 V1 EN US Figure 56 Timing diagram for scheme with main protections 1 and 2 REB500sys both equipped with an autoreclosure function Main protection 1 is in operation Response for successful autoreclosure Settings 1 AR Mode 1P 1P or 1P3P 1P3P 2 4 AR Mode off Zextension on ZE 1 AR off 1MRK 505 406 UEN B Secti...

Страница 158: ... Blocked t inhibit t Dead1 1P time t Oper Trip 3 Pol t D iscrim 1P t Close 300 ms IEC19000461 V1 EN US Figure 57 Timing diagram for scheme with main protections 1 and 2 REB500sys both equipped with an autoreclosure function Main protection 1 not in operation Response for successful autoreclosure Settings 1 AR Mode 1P 1P or 1P3P 1P3P 2 4 AR Mode off Zextension on ZE 1 AR off Section 5 1MRK 505 406 ...

Страница 159: ...AR Ready AR Blocked t Dead1 1P time t Oper Trip 3 Pol t Discrim 1P IEC19000462 V1 EN US Figure 58 Timing diagram for scheme with main protections 1 and 2 REB500sys both equipped with an autoreclosure function Main protection 1 in operation Response for unsuccessful autoreclosure Settings 1 AR Mode 1P 1P or 1P3P 1P3P 2 4 AR Mode off Zextension on ZE 1 AR off 1MRK 505 406 UEN B Section 5 Bay protect...

Страница 160: ...s 1 and 2 REB500sys both equipped with an autoreclosure function Main protection 1 not in operation Response for unsuccessful autoreclosure Settings 1 AR Mode 1P 1P or 1P3P 1P3P 2 4 AR Mode off Zextension on ZE 1 AR off 5 8 8 Checking the dead times GUID AB1C349F B540 4E71 B77D D3DA75A571CE v1 When commissioning the autoreclosure function it is not sufficient to check the combined operation of pro...

Страница 161: ...akers at both ends of the line are of the same type and thus permit the same tolerances to be assumed at both ends the same dead time tp can be set in the two terminal stations Where this is not the case the tripping and closing times of the two circuit breakers must also be measured in addition to the dead times The dead times set for the two autoreclosure functions must then ensure that a suffic...

Страница 162: ... breaker 1 B circuit breaker 2 C closed position O open position 0 start 1 trip signal 2 contacts part 3 current interrupted 4 close signal 5 current flows again 6 contacts make t2 reclosing time t1 tripping time t4 dead time t3 arc extinction time t6 duration of interrupt t5 pre ignition time t7 resulting dead time tp dead time ts inhibit time tw fault duration Section 5 1MRK 505 406 UEN B Bay pr...

Страница 163: ...equence components derived either internally or externally Current pick up enabling level Reference voltage enabling level Adjustable characteristic angle Permissive and blocking transfer tripping schemes Echo logic for weak infeed and open circuit breaker Transient blocking logic for reversal of energy direction 5 9 3 Inputs and outputs 5 9 3 1 CT VT inputs GUID CB029954 E781 47DD ACCC 5BF0449C0C...

Страница 164: ...etting IN 0 100 0 100 1 000 0 01 V Setting UN 0 200 0 003 1 000 0 001 Angle deg 60 0 90 0 90 0 5 ComMode Permissive Select SendMode MeasBwd Select 1 Channel off Select Echo off Select tBasic s 0 050 0 000 1 000 0 001 tWait s 0 050 0 000 0 500 0 001 tTransBlk s 0 100 0 000 0 500 0 001 Ext block BinaryAddr Always off Receive BinaryAddr Always off CB closed BinaryAddr Always off VT Superv BinaryAddr ...

Страница 165: ...ermissive scheme non directional only blocking scheme backwards measurement only blocking scheme 1 Channel Supplementary logic needed for coordinating ground fault and distance protections when using the same communications channel for a permissive scheme off on Echo Echo logic for weak infeed and open CB off Echo logic disabled Weak Echo only for weak infeed Bkr Echo only when CB open Weak Bkr Ec...

Страница 166: ...tain starting and tripping signals generated by the distance function and the E F protection is blocked in the following situations starting of more than one distance phase three phase tripping any trip single and three phase if 1 Channel is set to on Scheme with independent communication channels Apart from the added security of redundancy independent communication channels enable different trans...

Страница 167: ...69710 v1 It is assumed that the ground fault protection settings at both ends of the protected line are the same This applies especially to the basic time the blocking time the transfer tripping scheme in use and options 5 9 6 3 Choice of transfer tripping scheme GUID 692976A1 6A65 42D4 BEB9 AF17A9234C94 v1 In the case of a permissive directional comparison scheme the amount of fault resistance wh...

Страница 168: ...rrent does not reach the enabling level a signal is returned to the opposite end of the line if one is received This enables tripping to take place at the end with the stronger infeed AND AND AND AND AND AND tBasic tBasic Start AND AND AND AND AND AND tBasic tBasic Start Send Receive Send Receive Rel 1 Rel 2 18000060 IEC19000465 1 en vsdx FWD RVS Directional Characteristic INx INx FWD RVS Directio...

Страница 169: ...rds direction Rx receive T trip t TransBlk blocking time TB transient blocking tBasic basic time tWait waiting time Tx send V setting reference voltage Blocking directional comparison scheme Providing the conditions for directional measurement are fulfilled that is the current higher than I dir and the voltage higher than its enabling level V setting a protection function transmits a blocking sign...

Страница 170: ...or directional measurement 0 7 I Setting I Setting current enabling level MeasFwd fault in forwards direction MeasBwd fault in backwards direction tBasic basic time tWait waiting time 18000063 IEC19000468 1 en vsdx I0 U0 I dir I Setting U Setting Iasymm Tx I dir MeasBwd tBasic I dir MeasFwd tBasic D I Setting MeasFwd tBasic R tWait TB MeasBwd tTransBl Tx I dir MeasBwd tBasic I dir MeasFwd tBasic T...

Страница 171: ...al voltages in the vicinity of the fault the current flowing via the system capacitances also has a zero sequence component A capacitive current of this kind on a long line lies within the setting range of the sensitive ground fault protection function The pick up level I dir of the current circuit for the directional measurement has a fixed setting of 0 7 I Setting to take account of influences s...

Страница 172: ...elayed to allow time for the distance protection to respond to a fault if it is possible The basic time is normally set to tBasic max tripping time of the phase selective distance protection taking account of signal transmission time and sequential tripping CB operating time aux contact time input CB closed safety margin The sum of these times is usually about 100 to 200 ms 5 9 6 7 Circuit breaker...

Страница 173: ... sequence components of the voltages and the currents are derived internally the CT and VT inputs must be connected precisely as shown in the wiring diagram The neutral of the CTs in this case is formed on the line side and the parameter CT neutral must be set to line side 5 9 6 12 Supplementary information for binary inputs GUID 75464C67 88D9 463F BB75 563F5B765F94 v1 Ext Block Applying a signal ...

Страница 174: ...n the backwards direction that is the settings of I dir and V setting have been exceeded Send The Send output is the signal sent to the remote end of the line Receive Inhibit The Recve Inh signal prevents the distance function from receiving a PLC signal see Section 5 9 6 1 It is only generated when the parameter 1 Channel is set the basic time has expired or the ground fault protection picks up f...

Страница 175: ...10 3 4 Measurements GUID 781E4787 7BED 4D41 B2BB 44121AACEE17 v1 Neutral current 5 10 4 Function settings GUID E3F8BFC3 6B93 47A9 98DE 2C0730B455EA v1 Table 91 Inverse time earth fault overcurrent function settings Text Unit Default Min Max Step ParSet 4 1 P1 Select c Setting 1 00 Select k1 Setting s 013 5 0 01 200 0 0 01 IStart IB 1 10 1 00 4 00 0 01 tmin s 00 0 00 0 10 0 0 1 NrOfPhases 1 1 3 2 C...

Страница 176: ... 3 neutral current derived internally from the three phases IB Setting Reference current to take account of discrepancies with respect to IN BlockingInp I P for the external blocking signal F unused T function always blocked xx all binary I P s or O P s of protection functions Trip Tripping signal Start Pick up signal 5 10 6 Configuration GUID 7782BCDB EEF4 4AE5 8B8A 204E8D180EFE v1 Protection fun...

Страница 177: ...urrent inverse time characteristic to be shifted This is used for grading a series of relays along a line to achieve discrimination For example in the case of the very inverse characteristic the constant c 1 and the factor k1 13 5 The operating time t is given by the equation 1 0 3 1 B k t I I Assuming a grading time of 0 5 s at 6 times the base current IB is required the factor k1 for each of the...

Страница 178: ...e blocking input of the inverse time earth fault overcurrent protection The input must be inverted so that blocking of the function is cancelled by an active forwards signal When using this arrangement it must be noted that when MeasFwd does not pick up the I0 Invers function cannot trip when the reference voltage of the ground fault function is too low If tripping is required for this case the di...

Страница 179: ...ts for resetting The output is 0 if at least one of the reset inputs is 1 The output is 1 if at least one of the set inputs is 1 AND none of the reset inputs is 1 The output status is sustained when all the inputs are at 0 Every logic has an additional blocking input which when activated switches the output to 0 5 11 3 Inputs and outputs 5 11 3 1 CT VT inputs GUID 8E843CD7 DFCF 451A 9D4E 8C4505AE7...

Страница 180: ...d R2 The output is set or reset when at least one of the corresponding inputs is at logical 1 OR gate Reset inputs take priority over the set inputs BinOutput Output for signaling a trip logic respectively tripping trip logic BlockInp Input for blocking the function F not used xx all binary inputs or outputs of protection functions The output is always at logical 0 when the blocking input is at lo...

Страница 181: ...nstant the timer starts until it is either reset or expires counts 5 12 3 Inputs and outputs 5 12 3 1 CT VT inputs GUID 54D2B968 A98D 438A 935B 307DBC75FF29 v1 None 5 12 3 2 Binary inputs GUID 43DB6E1E 779C 4DA4 9640 8ADC5AEF7422 v1 Input signal Blocking 5 12 3 3 Binary outputs GUID E3343A2A D0CE 496F BAE3 E6B1D30F077E v1 Pick up Tripping 5 12 3 4 Measurements GUID 705F1915 B394 44BA BAB0 C33D582D...

Страница 182: ...gration Determination of the response of the function in the presence of a pulsating input signal 0 The delay continues to run providing the input signal does not disappear for longer than the reset time 1 The time during which the input is at logical 1 is integrated that is tripping does not take place until the sum of logical 1 time equals the set delay time BinaryInp Timer input xx all binary i...

Страница 183: ...0 0 0 0 tR tR tA No tripping tA No tripping tA tA tR tR tR Start Impulse prolongation Tripping IEC19000470 V1 EN US Figure 66 Operation of the delay function without integration Tripping only takes place if a start also occurs within the time tR tA tripping time Trip Delay tR reset time Reset Delay 1MRK 505 406 UEN B Section 5 Bay protection functions Bay protection functions REB500 177 Technical ...

Страница 184: ...7 Operation of the delay function with integration tint integrated time for tripping tR reset time Reset Delay Setting Trip Delay 5 13 Three phase current plausibility 46 I3PH 5 13 1 Mode of operation GUID 64F2F15C D25A 4639 9172 6BFC4F4EAF8B v1 Checking the plausibility of the three phase current inputs for monitoring the symmetry of the three phase system detection of a residual current supervis...

Страница 185: ... v1 Blocking 5 13 3 3 Binary outputs GUID 5C506AEB CB08 4C01 A40F A781D202DD3F v1 Tripping 5 13 3 4 Measurements GUID 16C59088 A3A6 4D1B BC6A F25743D4CEF4 v1 Difference between the vector sum of the three phase currents and the neutral current 5 13 4 Function settings GUID A1348575 07E6 4E14 A2B9 3A194AA0B057 v1 Table 97 Three phase current plausibility function settings Text Unit Default Min Max ...

Страница 186: ...ion functions Trip Tripping signal If the phase sequence is incorrect tripping takes place regardless of setting I Setting 5 14 Three phase voltage plausibility 47 U3PH 5 14 1 Mode of operation GUID DFFD6CC5 9BC6 492C 9A4B 2A5DB48A79A9 v1 Checking the plausibility of the three phase voltage inputs for detection of residual voltage monitoring the asymmetry of the three phase voltage system due to t...

Страница 187: ...hase voltage plausibility function settings Text Unit Default Min Max Step ParSet 4 1 P1 Select Select V setting UN 0 20 0 05 1 20 0 05 Delay s 10 00 0 1 60 0 0 1 VT Compens 01 00 2 00 2 00 0 01 VoltageInp CT VT Addr VT U1 U3 SumInp CT VT Addr 0 BlockInp BinaryAddr Always off Trip Signaladdr 5 14 5 Parameters GUID 978F9F5D A13B 4F69 BBCB 4D44BAC54CEB v1 Table 100 Three phase voltage plausibility f...

Страница 188: ...er and undercurrent protection 50 OCINST 5 15 1 Mode of operation GUID D7DE20A4 ACBA 4383 B058 EF37A04454F0 v1 General current monitoring with instantaneous response over and undercurrent Current monitoring where insensitivity to frequency is required over and undercurrent 5 15 2 Features GUID B08B6010 76E7 49F0 B403 0547FAB5381A v1 Processes instantaneous values and is therefore fast and largely ...

Страница 189: ...rent function parameters Signal Description ParSet 4 1 Parameter for determining in which set of parameters a particular function is active Delay Time between the function picking up and tripping I Setting Pick up current setting Setting restrictions 1 6 IN when supplied from metering cores 0 2 IN when supplied from protection cores f min Defines the minimum frequency for which measurement is requ...

Страница 190: ...le of the function is relatively insensitive to frequency and operates in a range extending from 4 to 120 of rated frequency It is therefore able to protect units with synchronous starting equipment during the starting sequence before reaching system frequency for example gas turbine sets with solid state starters The function detects when the instantaneous value of the input current exceeds the p...

Страница 191: ... IN i IN i IEC19000472 V1 EN US Figure 68 Operation of the peak value overcurrent function Typical settings Peak value phase fault protection I Setting according to application Delay 0 01 s f min 40 Hz 1MRK 505 406 UEN B Section 5 Bay protection functions Bay protection functions REB500 185 Technical manual Copyright 2019 ABB All rights reserved ...

Страница 192: ...186 ...

Страница 193: ...187 ...

Страница 194: ...B AB Grid Automation Products SE 721 59 Västerås Sweden Phone 46 0 21 32 50 00 www abb com protection control Copyright 2019 ABB All rights reserved Scan this QR code to visit our website 1MRK 505 406 UEN ...

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