A Power Smoothing Approach Based on Battery Energy Storage System for Power Fluctuations of Wind Power Generation

In order to solve the problem of power fluctuation caused by grid-connected wind power, this paper uses battery energy storage system to stabilize the output power of wind power generation. Based on the simple system built in this paper for stabilizing wind power, the power balance equation was established, and the mathematical model of wind power generation was put forward based on SOC for Power smoothing of Wind Power Generation. After determining the differences between the wind power generation curve and load curve, and the membership function of SOC for energy storage battery, the fuzzy algorithm rules were determined for controlling battery charge and discharge. Taking the wind power generation system in a certain area of Inner Mongolia as an example, a simulation system was established. Through the comparison and analysis of the simulation results, it is proved that the proposed method can effectively suppress power fluctuations of wind power generation.