0
Fstart (50,3Hz )
Gradient 83.3% Pimax / Hz
Pimax
Figure 6-1 : Power vs. frequency characteristic
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 a active factor
at the network connection point of
cos ϕ = 0.8 underexcited to 0.8 overexcited
(VDE-AR-N 4105,CEI 0-21 cos ϕ = 0.9 underexcited to 0.9 overexcited)
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. The setting value is either
1. fixed power factor cosφ (VDE-AR-N 4105 ,CEI 0-21)
2. displacement factor/active power characteristic curve cosφ(p)
(VDE-AR-N 4105 ,CEI 0-21)
3. fixed reactive power in Var.(CEI 0-21)
4. reactive power/voltage characteristic Q(U). (CEI 0-21)
30
Active/Reactive Power Control and LVRT (Optional)
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