Abstract
The growing integration of wind energy into power networks will have a significant impact on power system stability. With the development of wind turbine (WT) techniques, the doubly fed induction generator (DFIG) becomes the dominant WT type used in wind farms. In this situation, DFIG should be modeled properly in power system stability analysis. A detailed model of the WT with DFIG and its associated controllers is presented, based on which the small signal stability model is derived. Small signal stability analysis shows that the DFIG control can significantly improve the stability of WT system. Applying a set of optimized controller parameters, the stability can be further enhanced. Dynamic simulations are performed to illustrate the control performance
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