80
Parameter
Desciptions
Default
Range
PU Voltage De-
crease Start
Point
Under-voltage derating start point on
P-U curve - Charge
94.0% Un 90%~100%
PU Voltage De-
crease End
Point
Under-voltage derating end point on P-
U curve - Charge
90.0% Un 80%~100%
Reactive Power Control
In the on-grid operation mode, the PCS can control grid-connected reactive power by means
of power factor and reactive power ratio control. In the VSG on-grid operation mode, the
grid-connected reactive power can be controlled by means of reactive power instruction reg-
ulation and voltage instruction regulation.
Q(U) Mode
figure 10-3 Q(U) curve
table 10-3 Q(U) Mode Parameters Descriptions
Parameter
Desciptions
Default
Range
Minimum
Voltage
Grid voltage at P1 on Q(U) curve 80% 80%~90%
U1 Grid voltage at P2 on Q(U) curve 95% 95%~100%
U2 Grid voltage at P3 on Q(U) curve 105% 100%
~105%
Maximum
Voltage
Grid voltage at P4 on Q(U) curve 115% 110%~120%
10 PCS Functions System Manual
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