GE D30 Instruction Manual page 312
Line distance
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6.4 RECORDS
6
If the
FAULT REPORT 1 VT SUBSTITUTION
tion is performed based on the actual phase to ground voltages. If the VTs are connected in a delta configuration, fault loca-
tion is performed based on the delta voltages and zero-sequence voltage approximated based on the zero-sequence
current:
where Z
is the equivalent zero-sequence impedance behind the relay as entered under the fault report setting menu.
SYS0
SETTING
FAULT REPORT
TRIG:
Off=0
SETTINGS
FAULT REPORT
SOURCE:
SRC 50DD OP
I
A
I
B
I
C
3I_0
VA or VAB
VB or VBC
VC or VCA
Vn or V_0
SHOT # FROM
AUTO RECLOSURE
6-20
1
-- - V
(
V
=
A
3
1
-- - V
(
V
=
B
3
1
-- - V
(
V
=
B
3
setting value is "I0" and the VTs are connected in a wye configuration, the fault loca-
1
V
-- - V
(
=
A
AB
3
1
V
-- - V
(
=
B
BC
3
1
V
-- - V
(
=
B
CA
3
0
X
3 SEC
Figure 6–5: FAULT LOCATOR SCHEME
D30 Line Distance Relay
)
V
V
+
–
N
AB
CA
)
V
V
+
–
N
BC
AB
)
V
V
+
–
N
CA
BC
V
) Z
I
–
–
CA
SYS0
0
V
) Z
I
–
–
AB
SYS0
0
V
) Z
I
–
–
BC
SYS0
0
SETTINGS
FAULT REPORT 1 Z1
MAG:
FAULT REPORT 1 Z1
ANGLE:
FAULT REPORT 1 Z0
MAG:
FAULT REPORT 1 Z0
ANGLE:
FAULT REPORT 1
LENGTH UNITS:
FAULT REPORT 1
LENGTH:
FAULT REPORT 1 VT
SUBSTITUTION:
FAULT REP 1
SYSTEM Z0 MAG:
FAULT REP 1
SYSTEM Z0 ANGLE:
AND
RUN
FAULT
LOCATOR 1
6 ACTUAL VALUES
(EQ 6.13)
(EQ 6.14)
ACTUAL VALUES
FAULT REPORT #
DATE
TIME
FAULT TYPE
FAULT LOCATION
FAULT# RECLOSE SHOT
827094A5.CDR
GE Multilin
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