Evaluation of the effect of wind farms with doubly-fed induction generators on steady state voltage stability

Similar to the other renewable energy resources, wind power is geographically expanded, at the same time, dispersed, decentralized and always accessible. With the ever-increasing growth of electricity demand, wind farms contribution is remarkable in this regard and they have the enormous effect on the power system. Accordingly, this intermittent and new energy resource influences impressively the stability of the power system. In this paper, a novel method is proposed to improve the voltage stability of the power system. Utilizing this new method leads to the improved voltage stability margin in power system integrating wind farms with high power injection. This enhancement is, of course, the result of controlling voltage of the doubly-fed induction generators (DFIG) in wind turbines and analyzing the precise load flow in the case studies.