Assessing Power Quality of Large-Scale Photovoltaic Sources Interconnected Distribution Systems Utilising Hybrid Energy Storage-based Custom Power Device

Abstract

Non-conventional energy sources are becoming more prevalent because they discharge little to no carbon dioxide. As the world's population grows, technological advances and power requirements increase. Renewable energy sources (RES) are integrated into conventional systems to meet this demand. Despite its benefits, this interconnectivity affects the reliability and security of the power grid. The most significant concerns are power-quality issues, impacting consumer devices, and grid system operations. This study presents a simulated investigation of the effects of solar energy systems (PV) on the electric power quality of a distribution network using a Modified IEEE 33 Node Radial Distribution Test System. This article addresses power quality concerns such as voltage and power fluctuations, voltage profiles, and harmonics. Hybrid energy storage-based distributed STATCOM improves the voltage profile, voltage and power variations, and system harmonics. A battery supercapacitor is used as hybrid energy storage. The simulation analysis was performed using the MATLAB/Simulink environment.