GE Multilin L60, Инструкция по эксплуатации

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5-164 L60 Line Phase Comparison System GE Multilin
5.5 GROUPED ELEMENTS 5 SETTINGS
5
The
FORCE SELF-POLAR
and
FORCE MEM-POLAR
settings should never be asserted simultaneously. If this happens, the logic
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.
In firmware 7.20, when the fast distance algorithm is applied, the HardFiber brick is not supported. The fast dis-
tance algorithm is supported by the L60. It is not supported by the HardFiber, which maintains the original distance
element timing.
The distance zones of the L60 are identical to that of the UR-series D60 Line Distance Relay. For additional infor-
mation on the L60 distance functions, see the Theory of Operation chapter of the D60 manual, available on the GE
EnerVista DVD or free on the GE Digital Energy web page.
Figure 5–62: MEMORY VOLTAGE LOGIC
b) PHASE DISTANCE
PATH: SETTINGS

GROUPED ELEMENTS

SETTING GROUP 1(6)

DISTANCE

PHASE DISTANCE Z1(Z3)
 PHASE DISTANCE Z1

PHS DIST Z1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
PHS DIST Z1 DIR:
Forward
Range: Forward, Reverse, Non-directional
MESSAGE
PHS DIST Z1
SHAPE: Mho
Range: Mho, Quad
MESSAGE
PHS DIST Z1 XFMR VOL
CONNECTION: None
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1, Yd3,
Yd5, Yd7, Yd9, Yd11
MESSAGE
PHS DIST Z1 XFMR CUR
CONNECTION: None
Range: None, Dy1, Dy3, Dy5, Dy7, Dy9, Dy11, Yd1, Yd3,
Yd5, Yd7, Yd9, Yd11
MESSAGE
PHS DIST Z1
REACH: 2.00
ohms
Range: 0.02 to 500.00 ohms in steps of 0.01
MESSAGE
PHS DIST Z1
RCA: 85°
Range: 30 to 90° in steps of 1
MESSAGE
PHS DIST Z1 REV
REACH: 2.00 ohms
Range: 0.02 to 500.00 ohms in steps of 0.01
MESSAGE
PHS DIST Z1 REV
REACH RCA: 85°
Range: 30 to 90° in steps of 1
NOTE
NOTE
NOTE
827842A9.CDR
Use V_1
Use V_1 memory
AND
AND
OR
AND
AND
S Q
R
RUN
Update memory
SETTING
Off = 0
Force Memory Polarization
| V_1 | < 1.15 pu
| Vrms – | V | | < Vrms / 8
| Vrms – | V | | < Vrms / 8
| Vrms – | V | | < Vrms / 8
| V_1 | > 0.80 pu
| IA | < 0.05 pu
| IB | < 0.05 pu
SETTING
Off = 0
Force Self Polarization
SETTING
= VA, Vrms_A
= VB, Vrms_B
Distance Source
= VC, Vrms_C
= V_1
= IA
= IB
= IC
| IC | < 0.05 pu
| V_1 | < 0.10 pu
TIMER
5 cycles
0
TIMER
6 cycles
0
AND
AND
OR
SETTING
Memory duration
0
T
reset
Tracking Freq, *SRCx Freq
= IC
| f - f | > 1 Hz
TRACK SRC
*SRCx is the source used in distance
L90 Only