大型新能源富集地区储能电站电压无功控制策略  

Voltage and Reactive Power Control Strategy of Energy Storage Power Stations in Large New Energy Enriched Areas

作　　者：傅美平[1] 毛建容[1] 宋锐 王光辉 傅国斌 FU Meiping;MAO Jianrong;SONG Rui;WANG Guanghui;FU Guobin(XJ Group Co.,Ltd.,Xuchang 461000,China;State Grid Qinghai Electric Power Research Institute,Xining 810008,China)

机构地区：[1]许继集团有限公司,河南许昌461000 [2]国网青海省电力公司电力科学研究院,青海西宁810008

出　　处：《电器与能效管理技术》2022年第2期88-94,共7页Electrical & Energy Management Technology

基　　金：国家电网有限公司总部科技项目资助(SGQHDKY0DWJS1900077)。

摘　　要：为提升新能源富集地区电压无功支撑能力,提出了储能电站联合新能源双层电压无功协调控制策略。首先,区域层分钟级的电压无功优化以电压偏差和网损最小为目标,采用改进粒子群算法求解区域最优电压分布;针对节点电压波动的秒级调节采用基于电压无功灵敏度的偏差恢复控制策略,通过两个时间尺度的控制策略协调配合实现储能与新能源等多种无功资源的合理利用。其次,在电站层分析了储能电站电压无功关系,考虑储能的荷电状态对区域调节指令进行多源协同控制。最后,通过算例分析验证了所提策略的有效性和实用性。In order to improve the voltage and reactive power support capacity in new energy enriched areas, a double-layer voltage and reactive power coordinated control strategy for energy storage power stations combined with new energy is proposed.Firstly, on the minute-level time scale, the voltage and reactive power optimization at the regional level aims is the minimum voltage deviation and network loss, and the improved particle swarm optimization is used to solve the regional optimal voltage distribution.For the second-level adjustment of node voltage fluctuations, the deviation recovery control strategy based on voltage and reactive power sensitivity is adopted.Through the coordination of two time-scale control strategies, the various reactive resources such as energy storage and new energy is used rationally.Secondly, at the power station level, the voltage and reactive power relationship of the energy storage power station is analyzed, and the multi-source coordinated control of the regional regulation command is carried out considering the state of charge of the energy storage.Finally, the effectiveness and practicability of the proposed strategy are verified through the example analysis.

关 键 词：新能源 储能电站 电压无功 灵敏度 控制策略 

分 类 号：TM76[电气工程—电力系统及自动化]