Application of Battery Energy Storage System to Power System Operation for Reduction in PV Curtailment Based on Few-hours-ahead PV Forecast

The output suppression of PV generation (PV curtailment) is important to maintain the supply-demand balance in power systems. However, the energy loss due to PV curtailment will become larger in the future. In this study, we propose and evaluate an operation scheduling method for a battery energy storage system (BESS) on the basis of the day-ahead and intraday few-hours-ahead PV generation forecasts for a reduction in the PV curtailment. The BESS is used in the economic-load dispatching control (EDC) in power systems, which considers the unit commitment (UC) of conventional power units. Numerical simulations are carried out to evaluate the proposed method. The simulation results show that the BESS operation based on the intraday few-hours-ahead forecast method is effective for the efficient use of PV energy.