5-168 D60 Line Distance Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
5.6.3 LINE PICKUP
PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) LINE PICKUP
The line pickup feature uses a combination of undercurrent and undervoltage to identify a line that has been de-energized
(line end open). Alternately, the user may assign a FlexLogic operand to the
TERMINAL OPEN setting that specifies the termi-
nal status. Three instantaneous overcurrent elements are used to identify a previously de-energized line that has been
closed onto a fault. Faults other than close-in faults can be identified satisfactorily with the distance elements.
Co-ordination features are included to ensure satisfactory operation when high speed automatic reclosure (AR) is
employed. The
AR CO-ORD DELAY setting allows the overcurrent setting to be below the expected load current seen after
reclose. Co-ordination is achieved by all of the LINE PICKP UV elements resetting and blocking the trip path before the AR
CO-ORD DELAY times out. The AR CO-ORD BYPASS setting is normally enabled. It is disabled if high speed autoreclosure is
implemented.
The line pickup protection incorporates zone 1 extension capability. When the line is being re-energized from the local ter-
minal, pickup of an overreaching zone 2 or excessive phase current within eight power cycles after the autorecloser issues
a close command results in the LINE PICKUP RCL TRIP FlexLogic operand. For security, the overcurrent trip is supervised by
LINE PICKUP
LINE PICKUP
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
LINE PICKUP SIGNAL
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
PHASE IOC LINE
PICKUP: 1.000 pu
Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
LINE PICKUP UV PKP:
0.700 pu
Range: 0.000 to 3.000 pu in steps of 0.001
MESSAGE
LINE END OPEN PICKUP
DELAY: 0.150 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
LINE END OPEN RESET
DELAY: 0.090 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
LINE PICKUP OV PKP
DELAY: 0.040 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
AR CO-ORD BYPASS:
Enabled
Range: Disabled, Enabled
MESSAGE
AR CO-ORD PICKUP
DELAY: 0.045 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
AR CO-ORD RESET
DELAY: 0.005 s
Range: 0.000 to 65.535 s in steps of 0.001
MESSAGE
TERMINAL OPEN:
Off
Range: FlexLogic operand
MESSAGE
AR ACCELERATE:
Off
Range: FlexLogic operand
MESSAGE
LINE PICKUP DISTANCE
TRIP: Enabled
Range: Disabled, Enabled
MESSAGE
LINE PICKUP BLOCK:
Off
Range: FlexLogic operand
MESSAGE
LINE PICKUP
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
LINE PICKUP
EVENTS: Disabled
Range: Disabled, Enabled
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