Power Quality Analysis for Distributed Generation and Electric Vehicle Integrated Distribution System

Towards a sustainable future, the adoption of eco-friendly distributed generation (DG) and electric vehicle (EV) in the distribution network is increasing rapidly. However, the stochastic nature of renewable-based DGs and high penetration of EV charging have some adverse impacts on power quality in regional distribution grids. To mitigate these problems, we have presented a novel technique of bidirectional power flow control for DG-coupled battery energy storage system (BESS). The verification and validation of the proposed algorithm have been done by performing several case studies considering real-time practical solar photovoltaic (PV) irradiation and wind speed data, and actual EV load data. For the case studies, we adopted the IEEE 13 node distribution feeder as the testbed which is implemented in the MATLAB/Simulink environment. We observed that, by intelligent charging and discharging of BESS, the proposed method controls fast-varying power generated from PV effectively, and improves the voltage fluctuation and power quality significantly.