电池储能系统用于风电功率部分“削峰填谷”控制及容量配置

BESS for Wind Power“Peak Shaving”Control and Capacity Configuration

为缩减风电输出功率小时级的峰谷差,减小风电功率间歇性、波动性对规模化风电并网带来的不利影响,基于风电功率短期预测技术的小时级风电功率输出指令,提出风电功率部分"削峰填谷"控制策略,利用电池储能系统(battery energy storage system,BESS)缩减小时级尺度的风电功率峰谷差,并在各时间窗口内将风储合成出力的风电功率波动限制在一定的带宽范围以内;提出基于正态分布的储能功率计算方法,基于电池储能系统优化控制策略,分析电池储能系统实现部分"削峰填谷"控制策略与储能容量之间的关系。仿真实验结果验证该控制策略下储能容量配置的正确性与可行性。

In order to reduce the peak-to-valley D-value of hour-level wind power output power,and lower the negative impacts of the intermittence and fluctuation of the wind power on power grid,a wind power peak-shaving control strategy was proposed according to the hour-level wind power output instruction based on the short-term wind power forecast technology;the battery energy storage system（BESS） was used to lower the hour-level valley-to-peak difference of wind power,and the wind power fluctuation of the synthesized storage wind power output in every time scale was restricted within a certain limit of bandwidth.The paper put forward a normal distribution-based energy storage power calculation method and a BESS-based optimization control strategy,analyzed the relationship between the part peak-shaving control strategy by BESS and the energy storage capacity Simulation results proved that the energy storage capacity configuration was valid and feasible under such control strategy. ：