P
0
Gradient 40% Pm/Hz
Pm
Fstart(50,2Hz)
P
0
Fstart(50,3Hz)
Gradient 83.3% Pimax/Hz
Pimax
Figure 6-1: Power vs. frequency characteristic
Power vs. frequency curve for VDE-AR-N 4105
Power vs. frequency curve for CEI-021
6.2 Reactive Power Control
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 an active factor
at the network connection point of the range below:
• cos φ = 0.8 under-excited to 0.8 over-excited
• (For VDE-AR-N 4105 or CEI 0-21)
cos φ = 0.9 under-excited to 0.9 over-excited
Values deviating from the above must be agreed upon by contract. 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.
25
Active/Reactive Power Control and LVRT (Optional)
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