Mitigating SSR in hybrid system with steam and wind turbine by UPFC

With increasing use of wind power in power systems, impact of wind generator on subsynchronous resonance (SSR) is going to more important. Subsynchronous 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 generator-based wind turbine to carry out the studies. In this paper for damping the SSR, a unified power flow controller (UPFC) has been used. In this paper wind and steam turbine have been used as a hybrid energy production system. In order to have an optimal control on pitch angle in high speed of wind, fuzzy logic damping controller (FLDC) has been used. Also a supplementary shunt controller for UPFC has been design and ANFIS controller is added to this controller to mitigate the SSR.