电化学储能参与调频市场的贡献评估方法  

A Method to Evaluate the Contribution of Electrochemical Energy Storage Participating in Frequency Regulation Market

作　　者：宋少群 熊嘉丽 张伟骏 惠东[3] 牛萌 戴立宇 蔡强 SONG Shaoqun;XIONG Jiali;ZHANG Weijun;HUI Dong;NIU Meng;DAI Liyu;CAI Qiang(State Grid Fujian Electric Power Co.,Ltd.,Fuzhou 350003,China;State Grid Fujian Electric Power Research Institute,Fuzhou 350007,China;China Electric Power Research Institute,Beijing100192,China)

机构地区：[1]国网福建省电力有限公司,福建福州350003 [2]国网福建省电力有限公司电力科学研究院,福建福州350007 [3]中国电力科学研究院,北京100192

出　　处：《中国电力》2023年第1期87-95,共9页Electric Power

基　　金：国网福建省电力有限公司科技资助项目(52130017000Z)。

摘　　要：电化学储能参与调频服务市场、秒级响应联络线功率偏差,而衡量联络线功率偏差控制的指标CPS1和CPS2是由分钟级的联络线偏差电量累计值计算得到的,难以客观评价储能对调频的贡献。为此,提出了一种电化学储能参与调频服务市场的贡献评估方法。该方法将区域控制偏差作为反映储能电站调频作用的影响变量,通过建立“储能电站调频功率”与“区域控制偏差ACE”间的关联性,得到储能调频对区域控制偏差的作用值,进而构建衡量储能对系统调频贡献程度的指标;基于置信水平,分析储能对调频贡献程度指标的分布情况,确定储能在调频市场的贡献及经济效益。根据某省级电网的实际运行数据进行测算的结果表明,该方法能准确衡量储能的调频贡献,为科学合理地制定储能参与调频服务机制提供依据。Electrochemical energy storage responds to tie-line power deviation in seconds, while the indexes CPS1 and CPS2 that measure the tie-line power deviation are computed by the cumulative value of tie-line power deviation in minutes, thus making it hard to objectively evaluate the contribution of energy storage to frequency regulation. To this end, a method is proposed to evaluate the contribution of electrochemical energy storage participating in the frequency regulation auxiliary service market. In this method,the “area control error” is used as an influencing variable to indicate the frequency regulation effect of energy storage power stations, and a correlation is established between “frequency regulation power of energy storage power station” and “area control error” to obtain the effect value of energy storage frequency regulation on area control error, eventually constructing an index to measure the frequency regulation contribution of energy storage. Based on the confidence level, the distribution of frequency regulation contribution index of energy storage is analyze to determine the contribution and economic benefits of energy storage in the frequency regulation market. The proposed method is verified through the actual operation data of a provincial power grid, which shows that the proposed method can accurately measure the frequency regulation contribution of energy storage, providing a reference for reasonably formulating the mechanism of energy storage participating in frequency regulation auxiliary service.

关 键 词：调频服务 电化学储能 区域控制偏差 调频贡献评估 经济效益评价 

分 类 号：TK02[动力工程及工程热物理] TM73[电气工程—电力系统及自动化]