Delta PhotoVoltaic RPI-C500, Manual

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I
NSTALLATION
G
UIDE
37
I
NSTALLATION
A
CTIVE
/R
EACTIVE
P
OWER
C
ONTROL
A
ND
F
AULT
R
IDE
T
HROUGH
Figure 5-23. Power vs. frequency characteristic
5.10.2. 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, 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) a fixed
active factor cosφ or
b) a active factor cosφ(P) or
c) a fixed reactive power in MVar or
d) a reactive power/voltage characteristic Q(U).
5.10.2.1. Fixed Active Factor cosφ
User can set reactive current from Cap 0.80 to Ind 0.80 (inverter would stop reactive power
control if output power is below 10% rated power).
5.10.2.2. Active Factor cosφ(P)
Once user enables this method, inverter will deliver reactive current according to output active
power at that moment. The below figure is an example. Please refer to
5.11.7.4.4
cosφ(P)
for
the settings procedure.
Figure 5-24.
cosφ(P) characteristic