GE Multilin
L60 Line Phase Comparison System
5-153
5 SETTINGS
5.5 GROUPED ELEMENTS
5
•
NEG SEQ di/dt FD EVENTS
: This setting controls event recording of the function. These events are logged indepen-
dently from the 87PC events.
Figure 5–55: NEGATIVE-SEQUENCE CURRENT RATE OF CHANGE FAULT DETECTOR LOGIC
f) RATE OF CHANGE OF POSITIVE-SEQUENCE CURRENT FAULT DETECTION
PATH: SETTINGS
GROUPED...
PHASE COMPARISON...
ADVANCED FAULT...
RATE OF CHANGE OF POS SEQ CURRENT
The element responds to the vector difference of the positive-sequence current phasors taken at the present moment and
one-half a power system cycle earlier. Two current thresholds are provided for the low-set and high-set operation control-
ling keying and tripping. The raw
di
/
dt
condition of the element detects the change and resets when reaching a steady
state fault condition. As such, a seal-in timer is provided to maintain the detected fault condition for a user specified period
of time.
•
POS SEQ di/dt FD FUNCTION
: This setting enables or disables the rate of change of positive-sequence current fault
detection. Note that all fault detectors operate in parallel toward the 87PC function. If not required, a given fault detec-
tor shall be disabled. To effectively disable the overcurrent fault detectors under the main 87PC menu, set their thresh-
old very high.
RATE OF CHANGE OF
POS SEQ CURRENT
POS SEQ di/dt FD
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
POS SEQ di/dt FDL
PICKUP: 0.10 pu
Range: 0.01 to 5.00 pu in steps of 0.01
MESSAGE
POS SEQ di/dt FDL
SEAL-IN: 0.600 s
Range: 0.000 to 10.000 s in steps of 0.001
MESSAGE
POS SEQ di/dt FDH
PICKUP: 0.50 pu
Range: 0.01 to 5.00 pu in steps of 0.01
MESSAGE
POS SEQ di/dt FDH
SEAL-IN: 0.200 s
Range: 0.000 to 10.000 s in steps of 0.001
MESSAGE
POS SEQ FDH SUPV:
Off
Range: any FlexLogic operand
MESSAGE
POS SEQ di/dt BLK:
Off
Range: any FlexLogic operand
MESSAGE
POS SEQ di/dt FD
TARGET: Self-reset
Range: Self-Reset, Latched, Disabled
MESSAGE
POS SEQ di/dt FD
EVENTS: Disabled
Range: Disabled, Enabled
831800A2.CDR
| I_2 - I_2* |
(summed
current)
FAST MEASUREMENTS
F1 PHASE CT BANK:
Neg-seq current, I_2
L1 PHASE CT BANK:
Neg-seq current, I_2
SETTINGS
NEG SEQ di/dt
FDL PICKUP:
NEG SEQ di/dt
FDH PICKUP:
> FDL PICKUP
> FDH PICKUP
87PC dI2/dt FDH OP
Hardwired to the
87PC function
RUN
AN
D
Enabled = 1
Off = 0
SETTINGS
NEG SEQ di/dt
FD FUNCTION:
NEG SEQ di/dt
BLK:
(*) value delayed
by 0.5 cycle
0
t
DPO
TIMERS
NEG SEQ di/dt
FDL SEAL-IN:
0
t
DPO
87PC dI2/dt FDL OP
FLEXLOGIC
OPERANDS
NEG SEQ di/dt
FDH SEAL-IN:
OR
AN
D
SETTINGS
NEG SEQ FDH
SUPV:
Off = 0
Σ
Содержание L60
Страница 10: ...x L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Страница 57: ...GE Multilin L60 Line Phase Comparison System 2 27 2 PRODUCT DESCRIPTION 2 3 SPECIFICATIONS 2 ...
Страница 58: ...2 28 L60 Line Phase Comparison System GE Multilin 2 3 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Страница 100: ...3 42 L60 Line Phase Comparison System GE Multilin 3 3 DIRECT INPUT AND OUTPUT COMMUNICATIONS 3 HARDWARE 3 ...
Страница 482: ...6 26 L60 Line Phase Comparison System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Страница 554: ...10 8 L60 Line Phase Comparison System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Страница 674: ...B 110 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Страница 704: ...C 30 L60 Line Phase Comparison System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Страница 720: ...E 10 L60 Line Phase Comparison System GE Multilin E 1 PROTOCOL APPENDIX E E ...
Страница 732: ...F 12 L60 Line Phase Comparison System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Страница 742: ...H 8 L60 Line Phase Comparison System GE Multilin H 3 WARRANTY APPENDIX H H ...