A new method for contribution of DFIG-based wind farms in power system frequency regulation

This paper investigates the contribution of Doubly-Fed Induction Generator (DFIG) based wind farms in short term frequency control of power systems. First, three features of DFIGs that make them capable to participate in frequency control are introduced. Then, a new effective method to exploit these capabilities is proposed. The method estimates the system active power imbalance, using system average frequency, and uses kinetic energy stored in the wind farm inertia to compensate it. The performance of the proposed method is evaluated by simulation using MATLAB/SIMULINK.