5-208
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
GROUPED ELEMENTS
CHAPTER 5: SETTINGS
5
3.2.
For a three-terminal line
X
react_n
= the total neutral reactor inductive reactance. If identical reactors are installed at both ends of the line, the
inductive reactance is divided by 2 (or 3 for a three-terminal line) before inserting in the above equations. If the
reactors installed at both ends of the line are different, the following equations apply:
3.1.
For a two-terminal line
3.2.
For a three-terminal line
5.6.3.10 Open breaker echo
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
PHASE COMPARISON ELEMENTS
ADVANCED FAULT
DETECTORS
OPEN BREAKER ECHO
As operation of the permissive tripping mode of phase comparison protection and tripping of the line is fundamentally
dependent on transmitting the signal to the remote end of the line, some cases of system operating conditions require
attention:
•
If a line is open at one end, the phase comparison element is unable to detect an internal fault and give trip
permission to the remote terminal relay.
Perform charging current compensation calculations for an arrangement where the VTs are connected to the line
side of the circuit. Otherwise, opening the breaker at one end of the line causes a calculation error. The calculated
charging current per line terminal is recorded in oscillography per each phase.
OPEN BREAKER
ECHO
OPEN BREAKER KEYING
Disabled
Range: Disabled, Enabled
BRK 1 AUX CONTACT:
Off
Range: FlexLogic operand
BRK 1 CONT SUPV:
Off
Range: FlexLogic operand
BRK 2 AUX CONTACT:
Off
Range: FlexLogic operand
BRK 2 CONT SUPV:
Off
Range: FlexLogic operand
OPEN BREAKER KEYING
PKP DELAY: 0.000 s
Range: 0.000 to 50.000 s in steps of 0.001
OPEN BREAKER KEYING
RST DELAY: 0.000 s
Range: 0.000 to 50.000 s in steps of 0.001
WEAK-INFEED KEYING:
Off
Range: FlexLogic operand
WEAK-INFEED SUPV:
Off
Range: FlexLogic operand
WEAK-INFEED PICKUP
DELAY: 0.000 s
Range: 0.000 to 50.000 s in steps of 0.001
WEAK-INFEED RESET
DELAY: 0.035 s
Range: 0.000 to 50.000 s in steps of 0.001
Содержание L60
Страница 10: ...x L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 122: ...3 72 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL CONNECT TO D400 GATEWAY CHAPTER 3 INSTALLATION 3 ...
Страница 590: ...5 382 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 632: ...7 12 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 736: ...A 14 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 744: ...C 6 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 752: ...iv L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...