A Hybrid Genetic Algorithm based Power System Stabilizer

This paper presents a novel hybrid power system stabilizer (HyPSS), which is a parallel combination of conventional delta-omega power system stabilizer (CPSS) and fuzzy logic power system stabilizer (FLPSS). HyPSS is aimed at improving both transient and dynamic stability of the system. CPSS parameters and normalization and de-normalization factors of FLPSS are optimized using genetic algorithm (GA). Simulation results of multi machine power system reveal that the performance of HyPSS is quite robust to wide variations in loading conditions both for small and large perturbations.