A Study on the Wind Power Generation Fluctuation of Multiple Sites

Abstract

The use of renewable energy sources such as the sun and wind is increasing steadily. High penetration of wind power may affect electric power system frequency, because the fluctuations in wind power generation are much larger than that of conventional power plants. To evaluate wind power fluctuation and its effect on the power systems, it is important to acquire actual fluctuation data of wind farm power.In this paper, the authors report the results of an analysis of wind power fluctuation and smoothing effect from data measured at existing wind power sites in the Hokuriku region. A novel index is proposed to evaluate the smoothing effect, and impacts of high wind penetration are estimated using this index. This paper also proposes a control strategy of battery storage system for stabilizing wind farm output.