储能电池与常规机组配合参与一次调频的自适应控制策略.pdfVIP

第60卷第9期 电测与仪 表 Vol.60 No.9 2023年9月15日 Electrical Measurement Instrumentation Sep. 15,2023 储能电池与常规机组配合参与一次调频的 自适应控制策略 朱晓荣，韩啸 （华北电力大学（保定）电力工程系，河北保定071003） 摘要：为充分发挥电池储能系统与常规机组在一次调频中的各自优势，文中对储能采用下垂控制与虚拟惯性控制 结合的控制策略，通过设置随频率偏差变化而调整的下垂系数,实现增发功率在常规机组与储能之间的合理分配； 为避免储能电池发生过充过放现象，提出一种考虑SOC反馈调整出力的自适应控制策略；电网中储能容量配置不 如常规机组,设计一种储能适时投入与退出调频的控制策略，使储能在频率急剧变化或偏移至常规机组一次调频 能力范围外时投人调频；在频率基本稳定时储能平稳退出调频以保持SOC 。利用Digsilent/Power Factory软件对区 域电网分别进行阶跃负荷扰动和连续负荷扰动仿真实验，结果表明在阶跃扰动下该控制策略可显著改善暂态频率 特性,在连续扰动下可以兼顾频率偏移指标与SOC的保持。 关键词：储能电池；荷电状态；一次调频；下垂控制；虚拟惯性控制 D0I:10. 19753/j. issn1001-1390.2023.09.006 中图分类号：TM732 文献标识码：A The adaptive control strategy of energy storage battery cooperating with conventional generating units to participate in primary frequency regulation Zhu Xiaorong, Han Xiao (Department of Electrical Engineering, North China Electric Power University, Baoding 071003, Hebei, China) Abstract: In order to give full play to the advantages of battery energy storage system and conventional units in primary frequency regulation, the control strategy of combining droop control and virtual inertia control is adopted for energy stor- age. The reasonable distribution of additional power between conventional units and energy is realized by setting the droop coefficient adjusted with the variation of frequency deviation. In order to avoid the phenomenon of overcharge and over-dis- charge of energy storage battery, an adaptive control strategy is proposed which considers the output of SOC feedback ad- justment. The configuration of energy storage capacity in the power grid is not as good as that of conventional units. A control strategy is designed to timely input and exi