Transient Stability Improvement by using PSS4C in Hybrid PV Wind Power System

Abstract

Distributed generation with wind power and solar power has gained increasing penetration to the power system. This changed the operating conditions and degraded the power system stabilizers (PSS) for synchronous generator performances. PSS tuning have been studied to provide damping to suppress low frequency oscillations. IEEE 9-bus system is modified to include wind turbine and photovoltaic (PV) array. ETAP simulation results on modified IEEE 9-bus system show that PSS4C can outperform improved particle swarm optimized PSS4B (GPSO-PSS4B) and PSS4B in suppressing very low frequency oscillations.