Reactive Power Injection Strategies For Wind Energy Regarding Its Statistical Nature (original) (raw)

This work studies reactive power strategies for wind turbines and wind farms. Previous Spanish regulation stated unity power factor (P.F.) as target. New regulation introduced in RD 436/2004 rewarded up to 8% with P.F. < 0,95 inductive (on low-load hours) and P.F. < 0,95 capacitive (on peak hours). A better utilization of the infrastructure can be attained considering the reactive power generation availability even in calm periods -depending on the reactive power compensation scheme implemented in the wind farm-. This can lead to a voltage support strategy in a nearby node, especially if the voltage at that node can be estimated despite tap changing transformers. The effect of some control strategies in nearby nodes are quantified statistically regarding the stochastic nature of wind power.