In future power systems with extremely large integration of photovoltaic (PV) generation, it is necessary to not only properly maintain supply-demand balance without power shortfall but also utilize as much PV energy as possible. The application of PV power forecast and energy storage devices to power system operation is necessary. In this study, we propose a method for determining and modifying the charging and discharging schedule of battery energy storage system (BESS) and the unit commitment (UC) of thermal generators based on the PV power forecast. The proposed method is evaluated by numerical simulations for one year. The results show that both the energy shortfall and PV curtailment can be reduced by the proposed method.
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