GE UR Series L90, Инструкция по эксплуатации

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GE Multilin L90 Line Current Differential System 5-159
5 SETTINGS 5.6 GROUPED ELEMENTS
5
an undervoltage condition, which in turn is controlled by the
VT FUSE FAIL OP
operand with a 10 ms coordination timer. If a
trip from distance in not required, then it can be disabled with the
LINE PICKUP DISTANCE TRIP
setting. Configure the
LINE
PICKUP RCL TRIP
operand to perform a trip action if the intent is apply zone 1 extension.
The zone 1 extension philosophy used here normally operates from an under-reaching zone, and uses an overreaching
distance zone when reclosing the line with the other line end open. The
AR ACCELERATE
setting is provided to achieve
zone 1 extension functionality if external autoreclosure is employed. Another zone 1 extension approach is to permanently
apply an overreaching zone, and reduce the reach when reclosing. This philosophy can be programmed via the autore-
close scheme.
Figure 5–64: LINE PICKUP SCHEME LOGIC
837000AL.CDR
D60, L60, and L90 only
(LEO = line end open)
OR
AND
AND
AND
AND
AND
OR
OR
OR
AND
OR
0
8 cycles
IC < 0.05 pu
IA < 0.05 pu
IB < 0.05 pu
AND
OR
AND
AND
AND
OR
10 ms
0
AND
AND
SETTING
Enabled = 1
Function
SETTING
Off = 0
Block
VAG VAB
VBG VBC
VCG VCA
IC
IA
IB
SETTING
Signal Source
SETTING
Disabled = 0
Autoreclose Coordination
Bypass
FLEXLOGIC OPERANDS
GND DIST Z2 PKP
PH DIST Z2 PKP
SETTING
Enabled = 1
Distance Trip
SETTING
Off = 0
Autoreclose Accelerate
FLEXLOGIC OPERANDS
AR CLOSE BKR1
AR CLOSE BKR2
Source selected in the line pickup element
FLEXLOGIC OPERAND
SRCX VT FUSE FAIL OP
SETTING
Off = 0
Terminal Open
VAG or VAB < setting
VBG or VBC < setting
VCG or VCA < setting
SETTING
Undervoltage Pickup
RUN
IA > setting
IB > setting
IC > setting
SETTING
Phase IOC Line Pickup
RUN
RUN
TIMER
SETTING
Overvoltage Pickup Delay
T
PKP
T = 0
RST
SETTINGS
Line End Open Pickup Delay
Line End Open Reset Delay
T
PKP
T
RST
SETTINGS
Autoreclose Coordination
Pickup Delay
Autoreclose Coordination
Reset Delay
T
PKP
T
RST
FLEXLOGIC OPERANDS
LINE PICKUP I<A
LINE PICKUP I<B
LINE PICKUP I<C
FLEXLOGIC OPERAND
LINE PICKUP RCL TRIP
FLEXLOGIC OPERAND
LINE PICKUP LEO PKP
FLEXLOGIC OPERAND
LINE PICKUP UV PKP
AND
OR
FLEXLOGIC OPERANDS
LINE PICKUP OP
LINE PICKUP PKP
LINE PICKUP DPO
AND