ABB RELION 630 Series Product Manual page 40

Generator Protection and Control
REG630
Product version: 1.3
Table 70. Directional reactive power undervoltage protection (DQPTUV)
Characteristic
Operation accuracy
1)
Start time
Reset time
Reset ratio
Operate time accuracy in definite time mode
Suppression of harmonics
1) Start value = 0.05 × S , Reactive power before fault = 0.8 ×
n
Table 71. Directional reactive power undervoltage protection (DQPTUV) main settings
Parameter
Voltage start value
Operate delay time
Min reactive power
Min PS current
Pwr sector reduction
Table 72. Reverse power/directional overpower protection (DOPPDPR)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy
1) U = U , F = 50 Hz, results based on statistical distribution of 1000 measurements.
n n
2) Includes the delay of the signal output contact.
Table 73. Reverse power/directional overpower protection (DOPPDPR) main settings
Parameter
Directional mode
Start value
Power angle
Operate delay time
40
Start value . Reactive power overshoot 2 times. Results based on statistical distribution of 1000 measurement.
Function
DQPTUV
DQPTUV
DQPTUV
DQPTUV
DQPTUV
Function
DOPPDPR
DOPPDPR
DOPPDPR
DOPPDPR
Value
At the frequency f = f
n
Power:
1.5% or 0.002 × Q (±1.5%) for power, PF -0.71...0.71
n
Voltage:
±1.5% of the set value or ±0.002 × U
Typically 22 ms
<40 ms
Typically 0.96
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5 and so on
n
Value (Range)
0.20...1.20 pu
0.1...300.00 s
0.01...0.50 pu
0.02...0.20 pu
0.0...10.0°
Value
At the frequency f = f
n
±3% of the set value or ±0.002 × S
Typically 20 ms (±15 ms)
<40 ms
Typically 0.94
<45 ms
±1.0% of the set value of ±20 ms
Value (Range)
Forward
Reverse
0.01...2.00 pu
-90.00...90.00°
0.04...300.00 s
1MRS757583 C
n
Step
0.01
0.01
0.01
0.01
1.0
n
Step
-
0.01
0.01
0.01
ABB