5-242
G30 Generator Protection System
GE Multilin
5.7 CONTROL ELEMENTS
5 SETTINGS
5
Once the fuse failure condition is declared, it is sealed-in until the cause that generated it disappears.
An additional condition is introduced to inhibit a fuse failure declaration when the monitored circuit is de-energized; positive-
sequence voltage and current are both below threshold levels.
The
VT FUSE FAILURE 1 FUNCTION
setting enables and disables the fuse failure feature for Source 1 VT Fuse Fail.
The
VT NEU WIRE OPEN 1 FUNCTION
setting enables and disables the VT neutral wire open detection function. When the
VT is connected in Delta, do not enabled this function because there is no neutral wire for Delta connected VT.
The
VT NEU WIRE OPEN 1 3 HRAM PKP
setting specifies the pickup level of 3rd harmonic of 3V0 signal for the VT NEU
WIRE OPEN detection logic to pick up.
Figure 5–114: VT FUSE FAIL SCHEME LOGIC
Base voltage for this element is PHASE VT SECONDARY setting in the case of WYE VTs and (PHASE VT SECONDARY)/
in case of DELTA VTs.
827093AQ.CDR
FUSE
FAIL
FAULT
AND
AND
AND
SET
RESET
Reset-dominant
Latch
AND
AND
AND
AND
OR
OR
OR
OR
Function
SETTING
Enabled = 1
SOURCE 1
V_2
V_1
I_1
Run
V_1 < 0.05 pu
Run
V_2 > 0.1 pu
Run
I_1 > 0.075 pu
Run
V_1 < 0.80 pu
Run
I_1 < 0.05 pu
SRC1 50DD OP
FLEXLOGIC OPERANDS
2 cycles
20 cycles
SRC1 VT FUSE FAIL OP
FLEXLOGIC OPERANDS
SRC1 VT FUSE FAIL DPO
SRC1 VT FUSE FAIL VOL LOSS
FLEXLOGIC OPERAND
TIMER
OPEN POLE OP
The OPEN POLE OP operand applies
to the C60, D60, L60, L90, N60
Neutral Wire Open Detect
SETTING
Enabled = 1
SOURCE 1
3V_0 (3rd Harmonic)
SETTING
Run
3V_0 3rd Harm >setting
3 HARM PKP
AND
SRC1 3V0 3nd Harmonic
FLEX-ANALOG
AND
5 cycles
0
TIMER
SRC1 VT NEU WIRE OPEN
FLEXLOGIC OPERAND
OR
AND
0
20 cycles
TIMER
2 cycles
0
TIMER
30 cycles
0
TIMER
COMPARATORS
VA
VB
VC
Run
|VB’|-|VB| > 0.2 pu
& |VB’| > 0.8 pu
Run
|VA’|-|VA| > 0.2 pu
& |VA’| > 0.8 pu
Run
|VC’|-|VC| > 0.2 pu
& |VC’| > 0.8 pu
OR
VA’, VB’ and VC’ are the
voltage magnitude of one
cycle before
3
Содержание G30
Страница 10: ...x G30 Generator Protection System GE Multilin TABLE OF CONTENTS ...
Страница 30: ...1 20 G30 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Страница 414: ...5 274 G30 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Страница 456: ...8 2 G30 Generator Protection System GE Multilin 8 1 DIRECTIONAL PRINCIPLE 8 THEORY OF OPERATION 8 ...
Страница 470: ...9 14 G30 Generator Protection System GE Multilin 9 1 SETTING EXAMPLE 9 APPLICATION OF SETTINGS 9 ...
Страница 484: ...11 12 G30 Generator Protection System GE Multilin 11 6 DISPOSAL 11 MAINTENANCE 11 ...
Страница 512: ...A 28 G30 Generator Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Страница 620: ...B 108 G30 Generator Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Страница 666: ...E 10 G30 Generator Protection System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Страница 678: ...F 12 G30 Generator Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Страница 687: ...GE Multilin G30 Generator Protection System H 7 APPENDIX H H 2 ABBREVIATIONS H Z Impedance Zone ...