考虑可再生能源随机性和需求响应的电力系统日前经济调度  

Day-ahead Economic Dispatch of Power System Considering Renewable Power Uncertainty and Demand Response

作　　者：唐程辉 张凡 张宁[2] 曲昊源 马莉 TANG Chenghui;ZHANG Fan;ZHANG Ning;QU Haoyuan;MA Li(State Grid Energy Research Institute Co. Ltd., Beijing 102209, China;Department of Electrical Engineering, Tsinghua University, B&jing 100084, China)

机构地区：[1]国网能源研究院有限公司,北京市102209 [2]清华大学电机工程与应用电子技术系,北京市100084

出　　处：《电力系统自动化》2019年第15期18-25,63,共9页Automation of Electric Power Systems

基　　金：国家重点研发计划资助项目(2016YFB0900100);国家电网公司科技项目“全国统一电力市场架构设计及量化评估技术研究”~~

摘　　要：当前中国电力系统中可再生能源的占比不断提高,区别于传统能源,可再生能源需要在经济调度中考虑其出力的随机性。文中通过最小化社会成本,建立了含常规机组、可再生能源发电站并考虑负荷聚合商需求响应的电力系统日前经济调度模型。采用截断通用分布模型准确描述可再生能源随机性,并利用其闭合解析的累积分布函数提高算法求解效率。通过交替方向乘子法进行求解,在保证负荷聚合商隐私的前提下通过分布式求解得到日前经济调度结果。算例计算结果表明,所提出的日前经济调度方法能有效考虑可再生能源的出力随机性,并在鼓励可再生能源发电商在改进预测技术的同时降低社会成本;所提出的基于交替方向乘子法的求解算法具备良好的收敛性,可保证较高的求解效率。Currently,the proportion of renewable power is increasing in power system in China.Different from the conventional power generators,it is needed to consider the uncertainty of renewable power in economic dispatch.A day-ahead economic dispatch method considering conventional power generators,renewable power producers and demand response of load aggregators is proposed by minimizing the social cost.The uncertainty of renewable power is modelled based on the truncated versatile distribution model,which could accurately represent the renewable power uncertainty and improve the algorithm efficiency by its analytical cumulative distribution function.Based on the alternating direction method of multipliers,the dayahead economic dispatch model is solved in a distributed manner on the premise of ensuring the privacy of load aggregators.Results show that the proposed method can effectively consider the renewable power uncertainty,encouraging renewable power producers to improve their forecasting technology and reducing the social cost at the same time.The proposed algorithm based on the alternating direction method of multipliers has the characteristic of good convergence and can guarantee the high solving efficiency.

关 键 词：可再生能源 经济调度 截断通用分布模型 需求响应 交替方向乘子法 

分 类 号：TM73[电气工程—电力系统及自动化]