Optimal Allocation of Curtailment Levels of PV Power Output in Different Regions in Consideration of Reduction of Aggregated Fluctuations

Due to the high penetration of photovoltaic power generation system (PV) anticipated in future, curtailment PV output becomes crucial, not only maintain supply-demand balance but also preserve an adequate capacity for frequency control. When level (CL) aggregated is determined a day-ahead unit commitment (UC) scheduling, different CL should be applied regions with distinctive weather modes area so that fluctuations are minimized. The objective this study optimally allocate each region based on short-term forecasting hourly maximum fluctuation (MF agg ) minimized as long average (Avg same scheduled value UC. Based past observations output, proposed method employs relations between regions’ MF and (MF-CL patterns), Avg (Avg-CL patterns) several typical modes. Thus, specific MF-CL pattern Avg-CL mode, optimization proceeded by using these patterns. methods tested time-series at 61 observation points central Japan one year. As result, it demonstrated merely acknowledging mode enabled practically have similar results where perfect was utilized entire