平抑风电功率的电池储能系统控制策略

A Control Strategy for Battery Energy Storage System to Level Wind Power Output

为缩小0～24h时间尺度内的风电功率波动幅度,抑制风电输出较大峰谷差,提高风电可靠性,改善电网调峰能力,基于风电功率短期预测技术,提出了平抑风电功率波动的全钒电池储能系统(Vanadium redox flow battery energy storagesystem,VRB-ESS)运行控制策略,并给出控制算法流程。应用上述储能控制方法,以典型风电场为例,将风电输出功率波动限设置为10%进行风储联合仿真分析,结果证明该控制策略在风电部分削峰填谷方面有效、可行。

To decrease the fluctuation range of wind power output within the time scale from zero hour to 24 hour, restrain obvious peak-valley difference and improve reliability of wind power generation, enhance peak load regulation ability of power grid, based on short-term forecasting of wind power generation an operation and control strategy for Vanadium redox flow battery energy storage system （VRB-ESS） is proposed to restrain the fluctuation of wind power, and the flowchart of the proposed algorithm is given. Using the proposed energy storage and control strategy and taking typical wind farm for example, the limit of wind power output fluctuation is set as 10% and joint simulation of wind power generation and energy storage is performed. Simulation results show that the proposed control strategy is effect and feasible in partial peak shaving for wind power generation.