MITIGATING SUBSYNCHRONOUS RESONANCE IN HYBRID SYSTEM WITH STEAM AND WIND TURBINE BY UPFC

With increasing the usage of wind power turbines in power systems, impact of wind generator on sub-synchronous resonance (SSR) is going to more important. Sub-synchronous resonance (SSR) is a significant problem in a series compensated power systems. The IEEE second benchmark model on SSR is taken with integrating aggregated synchronous generatorbased wind turbine to carry out the studies. In this paper for damping the SSR in hybrid energy production system comprise wind and steam turbine a unified power flow controller (UPFC) has been used. To provide an optimal control on pitch angle in high speed of wind, fuzzy logic damping controller (FLDC) has been used. Supplementary shunt controller for UPFC has been also designed and ANFIS controller is added to this controller to mitigate the SSR.