Interconnection Functions; Directional Reactive Power Undervoltage Protection; Low-Voltage Ride-Through Protection - ABB REG615 Product Manual

Generator and Interconnection Protection
REG615
Product version: 5.0 FP1

Interconnection functions

Table 84. Directional reactive power undervoltage protection (DQPTUV )
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Operate time accuracy
Suppression of harmonics
1) Start value = 0.05 × S , reactive power before fault = 0.8 ×
n
2) Includes the delay of the signal output contact
Table 85. Directional reactive power undervoltage protection (DQPTUV) main settings
Parameter
Voltage start value
Operate delay time
Min reactive power
Min Ps Seq current
Pwr sector reduction
Table 86. Low-voltage ride-through protection (LVRTPTUV)
Characteristic
Operation accuracy
Start time 1)2)
Reset time
Operate time accuracy
Suppression of harmonics
Number of Start phases = 1 out of 3, results based on statistical distribution of 1000 measurements
1) Tested for
2) Includes the delay of the signal output contact
52
Start value , reactive power overshoot 2 times, results based on statistical distribution of 1000 measurements
Function
DQPTUV
DQPTUV
DQPTUV
DQPTUV
DQPTUV
Value
Depending on the frequency of the measured current and voltage:
f ±2 Hz
n
Reactive power range |PF| <0.71
Power:
±3.0% or ±0.002 × Q
n
Voltage:
±1.5% of the set value or ±0.002 × U
Typically 46 ms
<50 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,...
n
Value (Range)
0.20...1.20 × U
n
100...300000 ms
0.01...0.50 × S
n
0.02...0.20 × I
n
0...10°
Value
Depending on the frequency of the measured voltage:
f ±2 Hz
n
±1.5% of the set value or ±0.002 × U
Typically 40 ms
Recovery time setting
Based on maximum value of
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
1MRS758279 B
n
Step
0.01
10
0.01
0.01
1
n
ABB