Wind Power Fluctuation Smoothing of Double-Fed Induction Generator by Using Confining Factor

A control strategy for the wind power smoothing is proposed based on the analysis of the wind power energy capture. In the proposed method, the power reference command of double-fed induction generator is adjusted by using a factor, which can be determined by the system operator according to the system spinning reserve requirements. The power reference command is used to control the wind power generator speed and the pitch angle of the wind turbine. The newly proposed strategy has some advantages compared with the proposed methods in literatures. Simulation test for a wind farm with 6×1.5MW DFIG verifies the proposed wind power fluctuation smoothing strategy.