Loadability Assessment of a Photovoltaic Penetrated Grid to Offset Intermittency and Reduce Total Losses using Battery Energy Storage System

Because of many substantial benefits over other renewable energy resources (RES), photovoltaic (PV) and wind technologies are the most important distributed generation (DG) means and, they are rapidly and widely propagating. However, they are non-dispatchable and, the stochastic and intermittent natures of solar irradiation and wind, are some of the fundamental barriers and challenges to their development and their large-scale deployment. As a result, power systems operators have no control over DG’s available resources and are compelled to operate conventional generators to both cater for normal changes in load demand and make provision for DG’s output variations. This paper investigates, the effectiveness the integration of battery storage system (BSS) to offset the challenge of intermittency on a power grid with photovoltaic penetration. The simulation results on a modified IEEE-9 test network show that energy storage can successfully shape the fluctuation thereby reducing total losses of the combined PV-Battery plant while increasing the system loadability.