Solar PV-BES in distribution system with novel technique for DC voltage regulation
Naveen Gira, Anil Kumar
Abstract
The incremental penetration of solar photovoltaic (SPV) is creating voltage related issues in the distribution system. The problem gets complicated during the peak load demand and peak generation from SPV. This article proposes the real time implementation of SPV and Battery energy storage (BES) to regulate the DC link voltage and to compensate reactive power while supplying active power to local load in grid connected operation. The DC voltage regulation controller is derived using the curve fitting toolbox in Simulink (MATLAB) software. The combined operation of SPV and BES is investigated to sure that voltage profile of the distribution system is improved. Variations in PV generation and load are considered to verify the efficacy of the proposed scheme. Further, simulation is carried out in real time environment using real time (OPAL-RT) simulator. The results demonstrate that the reactive power compensation capability of SPV, combined with BES, is very effective to improve the voltage profile while supplying active power to the local loads.