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GE Multilin
L60 Line Phase Comparison Relay
5-115
5 SETTINGS
5.5 GROUPED ELEMENTS
5
Figure 5–65: LOAD ENCROACHMENT APPLIED TO DISTANCE ELEMENT
•
LOAD ENCROACHMENT MIN VOLT:
This setting specifies the minimum positive-sequence voltage required for oper-
ation of the element. If the voltage is below this threshold a blocking signal will not be asserted by the element. When
selecting this setting one must remember that the L60 measures the phase-to-ground sequence voltages regardless of
the VT connection.
The nominal VT secondary voltage as specified under
PATH: SYSTEM SETUP
AC INPUTS VOLTAGE BANK X5
PHASE VT SECONDARY
is the p.u. base for this setting.
•
LOAD ENCROACHMENT REACH:
This setting specifies the resistive reach of the element as shown in the Load
Encroachment Characteristic diagram. This setting should be entered in secondary ohms and be calculated as the
positive-sequence resistance seen by the relay under maximum load conditions and unity power factor.
•
LOAD ENCROACHMENT ANGLE:
This setting specifies the size of the blocking region as shown on the Load
Encroachment Characteristic diagram and applies to the positive sequence impedance.
Figure 5–66: LOAD ENCROACHMENT SCHEME LOGIC
837731A1.CDR
X
R
SETTING
SETTING
SETTING
SETTING
SETTINGS
SETTINGS
FLEXLOGIC OPERANDS
LOAD ENCROACHMENT
FUNCTION:
LOAD ENCRMNT BLK:
LOAD ENCROACHMENT
SOURCE:
LOAD ENCROACHMENT
MIN VOLT:
LOAD ENCROACHMENT
RST DELAY:
LOAD ENCROACHMENT
PKP DELAY:
LOAD ENCROACHMENT
REACH:
LOAD ENCROACHMENT
ANGLE:
Load Encroachment
Characteristic
LOAD ENCHR OP
LOAD ENCHR DPO
LOAD ENCHR PKP
Off=0
Pos Seq Voltage (V_1)
V_1 > Pickup
Pos Seq Current (I_1)
Enabled=1
Disabled=0
827847A2.CDR
RUN
t
t
PKP
RST
AND
Содержание L60
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Страница 24: ...1 14 L60 Line Phase Comparison Relay GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1...
Страница 42: ...2 18 L60 Line Phase Comparison Relay GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2...
Страница 78: ...3 36 L60 Line Phase Comparison Relay GE Multilin 3 3 DIRECT INPUT OUTPUT COMMUNICATIONS 3 HARDWARE 3...
Страница 368: ...8 28 L60 Line Phase Comparison Relay GE Multilin 8 2 SINGLE POLE TRIPPING 8 THEORY OF OPERATION 8...
Страница 470: ...D 10 L60 Line Phase Comparison Relay GE Multilin D 1 PROTOCOL APPENDIXD D...
Страница 482: ...E 12 L60 Line Phase Comparison Relay GE Multilin E 2 DNP POINT LISTS APPENDIXE E...
Страница 498: ...x L60 Line Phase Comparison Relay GE Multilin INDEX Z ZERO SEQUENCE CORE BALANCE 3 9...