Reactive Power Control; Fixed Active Factor Cosφ; Active Factor Cosφ(P) - Delta RPI-M8 User Manual

6.2 Reactive Power Control

According to BDEW:
With active power output, it must be possible to operate the generating plant in
any operating point with at least a reactive power output corresponding to a
active factor at the network connection point of
cos φ = 0.95 underexcited to 0.95 overexcited
Values deviating from the above must be agreed upon by contract. In the
consumer reference arrow system (see Annex B.4), that means operation in
quadrant II (under-excited) or III (overexcited).With active power output, either a
fixed target value for reactive power provision or a target value variably
adjustable by remote control (or other control technologies) will be specified by
the network operator in the transfer station. The setting value is either
a fixed active factor cosφ
a)
b) a active factor cosφ(P)
c) a fixed reactive power in MVar
d) a reactive power/voltage characteristic Q(U).
6.2.1 Fixed Active Factor cosφ
Configurations can be made to set the power factor from Cap 0.8 to Ind 0.8
(inverter would stop reactive power control if output power is below 10% rated
power).
6.2.2 Active Factor cosφ(P)
Once user enables this method, inverter will deliver the reactive current
according to output active power in that moment. The below figure is an example.
Please refer to 7.2.6.4.4 cosφ(P) for the settings procedure.
Cap 0.85
cosφ
Ind 0.85
Figure 6-2 cosφ(P) characteristic
or
or
or
1
P/Pn
31