Abstract
The advancement in Doubly-Fed induction generator (DFIG) deployed in fields can produce enormous power irrespective of wind speed. Since the cost of DFIG is very high, protection of machines components against super and sub synchronous oscillations must be assured in any operating condition. In this paper the causes and effect for the resonant conditions are well addressed. The DFIG model is developed using MATLAB software and mathematical equations are derived for the considered IEEE first benchmark system. The Eigen value analysis is performed and it’s validated with help of PSCAD/EMTDC simulation for various levels of series compensation and wind power penetration. The impact of sub synchronous resonance (SSR) is clearly identified and the corresponding series compensation and power level are measured. The induction generator effect and torsional interaction are the major issues for the SSR in DFIG. These two effects are well analyzed and stability limit in terms of series capacitor and power penetration is obtained.
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