Reverse Power/Directional Overpower Protection; Three-Phase Under Excitation Protection - ABB REG615 Product Manual

Generator and Interconnection Protection
REG615
Product version: 5.0 FP1
Table 75. Reverse power/directional overpower protection (DOPPDPR)
Characteristic
Operation accuracy 1)
2)3)
Start time
Reset time
Reset ratio
Operate time accuracy
Suppression of harmonics
Measurement mode = "Pos Seq" (default)
1)
2) U = U , f = 50 Hz, results based on statistical distribution of 1000 measurements
n n
3) Includes the delay of the signal output contact
Table 76. Reverse power/directional overpower protection (DOPPDPR) main settings
Parameter
Start value
Operate delay time
Directional mode
Power angle
Table 77. Three-phase under excitation protection (UEXPDIS)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy
Suppression of harmonics
1) f = 50Hz, results based on statistical distribution of 1000 measurements
n
2) Includes the delay of the signal output contact
ABB
Function
DOPPDPR
DOPPDPR
DOPPDPR
DOPPDPR
Value
Depending on the frequency of the measured current and voltage:
f = f ±2 Hz
n
Power measurement accuracy ±3% of the set value or ±0.002 × S
Phase angle: ±2°
Typically 45 ms
Typically 30 ms
Typically 0.94
±1.0% of the set value of ±20 ms
-50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.01...2.00 × S
n
40...300000 ms
2 = Forward
3 = Reverse
-90...90°
Value
Depending on the frequency of the measured current and voltage:
f = f ± 2 Hz
n
±3.0% of the set value or ±0.2% Zb
Typically 45 ms
Typically 30 ms
Typically 1.04
Total retardation time when the impedance returns from the operating
circle <40 ms
±1.0% of the set value or ±20 ms
-50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
1MRS758279 B
n
Step
0.01
10
-
1
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