부산대학교 도서관

The wind-solar combined power generation system can effectively suppress the fluctuation of wind power and photovoltaic output and reduce its impact on the power grid. Accurate understanding of the complementary characteristics of wind-solar output and the matching law of wind-solar output and grid load is of great significance for guiding the planning and safe and stable operation of the cogeneration system. It can effectively guide the operation and dispatch of regional wind-solar power stations, improve the wind-solar absorption capacity, and ensure the safe and stable operation of the power system. In this paper, the fluctuation complementarity of wind-solar combined output and its matching to power grid load are studied, and the corresponding laws of the two are revealed. The fluctuation complementarity rate, rank correlation coefficient based on Copula theory and comprehensive distance are selected as 2 evaluation indexes. The fluctuation, complementarity of combined wind-solar output and its matching to power grid load are respectively studied around them, and the corresponding rules of evaluation indexes are revealed. Based on the research results obtained from the historical measured output data and load data of the wind-solar combined electric field, the following findings are found in this paper: Under the time resolution of 6 hours, the wind power and photovoltaic output have good complementarity, and under the time resolution of 15 minutes, the source-charge matching is good.