Power Quality and Reliability Improvement of Distribution System by Control of PV and Battery Integrated DSTATCOM

The proposed work deals with the multifunctional operation of a a distribution static compensator (DSTATCOM) integrated with photovoltaic (PV) and battery in a distribution system. It focuses on the improvement of quality and reliability of power along with a reduction in environmental pollution by using the combination of PV, battery and DSTATCOM. Depending on system dynamics such as load harmonics, load variation, unbalanced load, varying solar irradiance and battery SOC, the controller of DSTATCOM and battery energy storage system (BESS) operates to assure mitigation of power quality issues along with optimum utilisation of green power. Here, the DC-link is regulated by DSTATCOM, hence, BESS operates in reference power based current control mode. Also, the presence of a battery supports the DC-link voltage during any transient condition (such as load change) and smoothens the performance of DSTATCOM. The presented work is investigated under various dynamic conditions using MATLAB/Simulink and real-time simulation.