CHAPTER 9: COMMISSIONING
TESTING
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
9-5
9
6.
At the remote relay, make the following changes in the
SETTINGS
GROUPED ELEMENTS
LINE DIFFERENTIAL
ELEMENT
CURRENT DIFFERENTIAL
menu:
CURRENT DIFF DTT
: “Enabled”
7.
At the Local relay, make the following changes in the
SETTINGS
INPUTS/OUTPUTS
CONTACT OUTPUT N1
menu:
CONTACT OUTPUT N1 OPERATE
: “
87L DIFF RECVD DTT
”
8.
At the Local relay, verify that
ACTUAL VALUES
STATUS
CONTACT OUTPUTS
Cont Op N1
is in the “Off” state.
9.
Apply current to phase A of the remote relay and increase until 87L operates.
10. At the Local relay, observe
ACTUAL VALUES
STATUS
CONTACT OUTPUTS
Cont Op N1
is now in the “On” state.
11. Repeat steps 8 through 10 for phases A and B and observe Contact Outputs N2 and N3, respectively.
12. Repeat steps 8 through 11 with the Remote and Local relays inter-changed.
13. Make the following setting change in the
SETTINGS
GROUPED ELEMENTS
LINE DIFFERENTIAL ELEMENT
CURRENT
DIFFERENTIAL
menu of both relays:
CURRENT DIFF FUNCTION
: “Disabled”
14. At the Remote relay, set
SETTINGS
INPUTS/OUTPUTS
CONTACT OUTPUT N1
CONTACT OUTPUT N1 OPERATE
to
the
CURRENT DIFF KEY DTT
operand.
15. At the Local relay, observe under the
ACTUAL VALUES
STATUS
CONTACT OUTPUTS
menu that
CONTACT OUTPUT N1
,
N2
, and
N3
are “Off”.
16. At the Remote relay, set
SETTINGS
TESTING
FORCE CONTACT INPUTS
FORCE Cont Ip N1
to “Closed”.
17. At the Local relay, observe under
ACTUAL VALUES
STATUS
CONTACT OUTPUTS
that
CONTACT OUTPUT N1
,
N2
, and
N3
are now “On”.
18. At both the Local and Remote relays, return all settings to normal.
9.1.4.2 Final tests
As proper operation of the relay is fundamentally dependent on the correct installation and wiring of the CTs, it must be
confirmed that correct data is brought into the relays by an on-load test in which simultaneous measurements of current
and voltage phasors are made at all line terminals. These phasors and differential currents can be monitored at the
ACTUAL VALUES
METERING
87L DIFFERENTIAL CURRENT
menu where all current magnitudes and angles can be
observed and conclusions of proper relay interconnections can be made.
Содержание L30
Страница 10: ...x L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 126: ...3 68 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL CONNECT TO D400 GATEWAY CHAPTER 3 INSTALLATION 3 ...
Страница 214: ...4 88 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4 INTERFACES 4 ...
Страница 582: ...7 16 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 598: ...9 6 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 9 COMMISSIONING 9 ...
Страница 622: ...10 24 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FAULT LOCATOR CHAPTER 10 THEORY OF OPERATION 10 ...
Страница 670: ...A 18 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 678: ...C 6 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 682: ...D 4 L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL REVISION HISTORY APPENDIX D MISCELLANEOUS D ...
Страница 686: ...iv L30 LINE CURRENT DIFFERENTIAL SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...