REACTIVE POWER COMPENSATION USING FUZZY GAIN SCHEDULING CONTROLLED STATCOM FOR GRID CONNECTED PV SYSTEM

Abstract

Integration of a grid-connected renewable energy system is expected to meet the energy demand of the grid and reduce the carbon emission thereby global warming. This paper presents a grid-connected photovoltaic (PV) system combined with STATic synchronous COMpensator (STATCOM) that uses Fuzzy Gain Scheduling controller, to improve the grid quality of the power system by reactive power injection from STATCOM to compensate the voltage oscillation and to improve the voltage stability. This paper compares the proposed STATCOM with Fuzzy Gain Scheduling (FGS) controller for the dynamic state voltage oscillation of the PV system with the conventional PI controller for voltage compensation. On testing the proposed system through simulation using MATLAB/Simulink, the proposed model was found to be effective in mitigating voltage sags and swells with improved voltage regulation and power factor.