GE D60 Instruction Manual page 173

5 SETTINGS
The distance zones can be forced to become self-polarized through the
dition (FlexLogic™ operand) can be configured to force self-polarization. When the selected operand is asserted (logic 1),
the distance functions become self-polarized regardless of other memory voltage logic conditions. When the selected oper-
and is de-asserted (logic 0), the distance functions follow other conditions of the memory voltage logic as shown below.
The distance zones can be forced to become memory-polarized through the
condition (FlexLogic™ operand) can be configured to force memory polarization. When the selected operand is asserted
(logic 1), the distance functions become memory-polarized regardless of the positive-sequence voltage magnitude. When
the selected operand is de-asserted (logic 0), the distance functions follow other conditions of the memory voltage logic.
The and
FORCE SELF-POLAR FORCE MEM-POLAR
will give higher priority to forcing self-polarization as indicated in the logic below. This is consistent with the overall philoso-
phy of distance memory polarization: the memory polarization cannot be applied permanently but for a limited time only; the
self-polarization may be applied permanently and therefore should take higher priority.
SETTING
FORCE MEM-POLAR:
Off=0
SETTING
DISTANCE SOURCE:
V_1 < 1.15 pu
V_A, V_RMS_A
V_RMS- V < V_RMS/8
V_B, V_RMS_B V_RMS- V < V_RMS/8
V_C, V_RMS_C V_RMS- V < V_RMS/8
V_1 V_1 > 0.8 pu
IA < 0.05 pu
IA
IB < 0.05 pu
IB
IC < 0.05 pu
IC
V_1 < 0.1 pu
SETTING
FORCE SELF-POLAR:
Off=0
b) PHASE DISTANCE
PATH: SETTINGS GROUPED ELEMENTS
PHASE DISTANCE Z1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
GE Multilin
settings should never be asserted simultaneously. If this happens, the logic
UPDATE MEMORY
AND
RUN
5 cy
AND
0
S Q
AND
R
OR
Figure 5–39: MEMORY VOLTAGE LOGIC
SETTING GROUP 1(6) DISTANCE
PHS DIST Z1
FUNCTION: Disabled
PHS DIST Z1 DIR:
Forward
PHS DIST Z1
SHAPE: Mho
PHS DIST Z1 XFMR VOL
CONNECTION: None
PHS DIST Z1 XFMR CUR
CONNECTION: None
PHS DIST Z1
REACH: 2.00 ohms
PHS DIST Z1
RCA: 85°
PHS DIST Z1 REV
REACH: 2.00 ohms
PHS DIST Z1 REV
REACH RCA: 85°
D60 Line Distance Relay
5.5 GROUPED ELEMENTS
setting. Any user-selected con-
FORCE SELF-POLAR
setting. Any user-selected
FORCE MEM-POLAR
SETTING
MEMORY DURATION:
0
AND
t
RST
AND
OR
AND
PHASE DISTANCE Z1(Z5)
Range: Disabled, Enabled
Range: Forward, Reverse, Non-directional
Range: Mho, Quad
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1, Yd3,
Yd5, Yd7, Yd9, Yd11
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1, Yd3,
Yd5, Yd7, Yd9, Yd11
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 30 to 90° in steps of 1
Range: 0.02 to 500.00 ohms in steps of 0.01
Range: 30 to 90° in steps of 1
Use V_1 mem
Use V_1
5
827842A6.CDR
5-83