Performance analysis of a hybrid renewable generation system connected to grid in the presence of DVR

Abstract

This paper discusses the performance of a hybrid renewable generation system (HRGS). Dynamic voltage restorer (DVR) enhances the voltage profile of the grid. HRGS consists of Photovoltaic (PV), Battery storage unit (BSU) and an auxiliary unit (AU). AU is a backup generation consists of Diesel Generator (DG) and fuel cell. In stand-alone mode, HRGS supply power to remote residents, while the remainder is supplied to the grid. If the load demand exceeds the capacity of the PV generation and the State of Charge (SOC) is less than 0.2, AU is used to generate power otherwise excess power stored in the BSU and supply to the grid. The performance of HRGS has been improved using modified Perturb and Observe (P&O) algorithm of PV, control strategy of BSU & AU. The validation of different shunt fault and power quality issues are also tested to check the effectiveness and stability of the system.