GE Multilin
C70 Capacitor Bank Protection and Control System
5-257
5 SETTINGS
5.8 INPUTS AND OUTPUTS
5
Example 1: Extending input/output capabilities of a C70 relay
Consider an application that requires additional quantities of contact inputs or output contacts or lines of programmable
logic that exceed the capabilities of a single UR-series chassis. The problem is solved by adding an extra UR-series IED,
such as the C30, to satisfy the additional inputs/outputs and programmable logic requirements. The two IEDs are con-
nected via single-channel digital communication cards as shown below.
Figure 5–118: INPUT AND OUTPUT EXTENSION VIA DIRECT INPUTS AND OUTPUTS
Assume contact input 1 from UR IED 2 is to be used by UR IED 1. The following settings should be applied (Direct Input 5
and bit number 12 are used, as an example):
The
Cont Ip 1 On
operand of UR IED 2 is now available in UR IED 1 as
DIRECT INPUT 5 ON
.
Example 2: Interlocking busbar protection
A simple interlocking busbar protection scheme can be accomplished by sending a blocking signal from downstream
devices, say 2, 3 and 4, to the upstream device that monitors a single incomer of the busbar, as shown in the figure below.
Figure 5–119: SAMPLE INTERLOCKING BUSBAR PROTECTION SCHEME
Assume that Phase Instantaneous Overcurrent 1 is used by Devices 2, 3, and 4 to block Device 1. If not blocked, Device 1
would trip the bus upon detecting a fault and applying a short coordination time delay.
The following settings should be applied (assume Bit 3 is used by all 3 devices to send the blocking signal and Direct Inputs
7, 8, and 9 are used by the receiving device to monitor the three blocking signals):
UR IED 2:
DIRECT OUT 3 OPERAND
: "
PHASE IOC1 OP
"
UR IED 3:
DIRECT OUT 3 OPERAND
: "
PHASE IOC1 OP
"
UR IED 4:
DIRECT OUT 3 OPERAND
: "
PHASE IOC1 OP
"
UR IED 1:
DIRECT INPUT 7 DEVICE ID
: "2"
DIRECT INPUT 7 BIT NUMBER
: "3"
DIRECT INPUT 7 DEFAULT STATE
: select "On" for security, select "Off" for dependability
DIRECT INPUT 8 DEVICE ID
: "3"
DIRECT INPUT 8 BIT NUMBER
: "3"
DIRECT INPUT 8 DEFAULT STATE
: select "On" for security, select "Off" for dependability
UR IED 1:
DIRECT INPUT 5 DEVICE ID
= “2”
DIRECT INPUT 5 BIT NUMBER
= “12”
UR IED 2:
DIRECT OUT 12 OPERAND
= “Cont Ip 1 On”
UR IED 1
TX1
RX1
UR IED 2
TX1
RX1
842712A1.CDR
UR IED 1
UR IED 2
UR IED 4
UR IED 3
BLOCK
Содержание C70
Страница 10: ...x C70 Capacitor Bank Protection and Control System GE Multilin TABLE OF CONTENTS ...
Страница 30: ...1 20 C70 Capacitor Bank Protection and Control System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Страница 394: ...5 270 C70 Capacitor Bank Protection and Control System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Страница 452: ...8 18 C70 Capacitor Bank Protection and Control System GE Multilin 8 1 OVERVIEW 8 THEORY OF OPERATION 8 ...
Страница 474: ...9 22 C70 Capacitor Bank Protection and Control System GE Multilin 9 4 SETTING EXAMPLE 9 APPLICATION OF SETTINGS 9 ...
Страница 486: ...10 12 C70 Capacitor Bank Protection and Control System GE Multilin 10 6 DISPOSAL 10 MAINTENANCE 10 ...
Страница 630: ...B 110 C70 Capacitor Bank Protection and Control System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Страница 676: ...E 10 C70 Capacitor Bank Protection and Control System GE Multilin E 1 OVERVIEW APPENDIX E E ...
Страница 688: ...F 12 C70 Capacitor Bank Protection and Control System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Страница 698: ...H 8 C70 Capacitor Bank Protection and Control System GE Multilin H 3 WARRANTY APPENDIX H H ...