Study on capacity of wind power integrated into power grid based on static voltage stability

The voltage stability of power system would be deteriorated with the steady increase of wind energy penetration, considering the large variation range of power output from wind farms. The capacity of the power system in integrating wind power is investigated in this paper. Model of grid-connected wind farm is firstly introduced, and the influence of large-scale wind farms on power system static voltage stability is analyzed, with the P-V curve of doubly-fed induction generator (DFIG). Based on these theoretical researches, simulations on the power system of Xinjiang province is done, using the Power System Analysis Software Package (PSASP), in which the capacity of wind farm integration from is analyzed from the aspect of static voltage, and impact of power factor on the capacity of wind farm integration is discussed.