A Novel Aggregation Method for Doubly Fed Wind Farm

With the increasing penetration of wind power, many problems like frequency and voltage stability appear frequently, so the power grid gradually requires that the wind farm can be dispatched and controlled. In this paper, a new aggregation method is proposed to calculate the aggregated active and reactive power regulation range of a doubly-fed wind farm, which provides a dispatching reference for the power system control center. In this method, voltage security and different operation states of wind turbines and internal power losses of the wind farm are considered. Finally, the actual aggregated P-Q regulation range of the wind farm that can ensure operation safety is obtained. A wind farm with 25 doubly fed induction generator (DFIG) wind turbines is used to verify the proposed aggregation method.