Research on fuzzy power system stabilizer for hydro-generator′s governor

Fixing power system stabilizer on the governor of synchronous generator is an effective method to restrain low frequency oscillation.This paper introduces a fuzzy governor-based power system stabilizer(FGPSS) of hydro-turbine generator adopting the elastic water hammer model of hydraulic system and Philips-Heffron model of synchronous generator. Simulation studies are performed through Matlab/Simulink. The simulation results indicate that the FGPSS which has strong robustness can improve the dynamic quality of hydro-generator units.