Real-time FuzzyLogic Based Power Quality Analysis of Hybrid microgrid System

This paper depicts voltage and current control of micro-grid system which is adequate to meet the power demand of local loads. The Hybrid microgrid considered in this work is a combination of a micro hydro based SEIG system, a PV array along with a Battery Energy Storage System(BESS) and a STATCOM. The SEIG system delivers a fixed amount of power to the loads. During load variation the SEIG does not have ample amount of power to serve the load requirement, so the system voltage and frequency fluctuations occurs and system performance deteriorates. To maintain the power quality the Fuzzy Controller based STATCOM is employed which supplies the required power to the loads. The active power demand of the load is managed by the dc side of the STATCOM which houses a PV-BESS system. The STATCOM controls the dc link voltage which on the other hand manages the active power flow to the load. The model has been simulated in real-time simulator for various load conditions like linear RL load, dynamic load and nonlinear load and the results are presented in the paper.