Fuzzy logic based PV STATCOM operation for grid voltage regulation in night

Abstract

For the generation of electricity with less impact on the environment, utilization of renewable energy resources is growing worldwide as a clean energy source. With the increasing penetration of renewable based Distributed Generators (DG) on the distribution grid can create power quality issues like voltage variations, relay malfunctioning, and reverse power flow during lightly loaded condition which rises the voltage level beyond the limit. To control the voltage variables, there is a need to install power electronics converter based FACTs devices like STATCOM. Now a days, a new way to utilize the PV inverter working as a STATCOM for the grid voltage regulation while the PV plant cannot generate power during night time and cloudy days. This new technology called as PV STATCOM. This paper introduces the fuzzy logic based control scheme of PV STATCOM for the grid voltage regulation and controls the voltage rise during a reverse power flow condition.