含多分布式能源聚合商的本地电力市场最优能源交易策略  

Optimal Energy Trading Strategies for Local Electricity Markets with Multiple Distributed Energy Resource Aggregators

作　　者：曾垂辉 李文正 李宝伟 谢俊[1] ZENG Chuihui;LI Wenzheng;LI Baowei;XIE Jun(Central China Branch of SGCC,Wuhan 430000,China;XJ Electric Co.,Ltd.,Xuchang 461000,China;State Key Laboratory of Strong Electromagnetic Engineering and New Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]国家电网有限公司华中分部,湖北武汉430000 [2]许继电气股份有限公司,河南许昌461000 [3]强电磁工程与新技术国家重点实验室(华中科技大学),湖北武汉430074

出　　处：《中国电力》2023年第11期236-245,共10页Electric Power

基　　金：国家自然科学基金资助项目(51877090)。

摘　　要：分布式能源虽广泛存在,但单体容量小,导致其无法直接参与市场的能源交易。为此,提出了一种含多分布式能源聚合商的本地电力市场最优能源交易策略。首先,零散的分布式能源以多个聚合商的形式参与本地电力市场的能源交易,配电系统运营商作为系统所有者参与本地电力市场和上级电力批发市场的能源交易;其次,建立一个含多分布式能源聚合商的本地电力市场最优能源交易双层模型;最后,利用Karush-Kuhn-Tucker(KKT)条件、强对偶理论以及大M法等将该模型转换为单层模型进行求解。算例仿真结果表明,所提模型可以有效促进分布式能源参与电力市场能源交易,并提高系统运行经济性。Distributed energy resources are small-scale and widely-distributed,which make them unable to directly participate in the energy trading.Therefore,it is proposed by an optimal energy trading strategy for local electricity market with multiple distributed energy resource(DER)aggregators.Firstly,scattered DERs are formulated as aggregators to participate in the energy trading of the local electricity market,and distribution system operators participate act as system owners to participate the energy trading of the local electricity market and the wholesale market of the upper grid.Secondly,a two-tier model of optimal energy trading in local electricity market with multiple DER aggregators is established.Finally,the Karush-Kuhn-Tucker(KKT)condition,the strong duality theory and the big-M method are adopted to transform the proposed model into a single layer model.The simulation results show that the proposed model can effectively promote DER to participate in energy trading and improve the operation efficiency of the overall power system.

关 键 词：分布式能源聚合商 配电系统运营商 KKT条件 强对偶理论 本地电力市场 

分 类 号：F426.61[经济管理—产业经济] TM73[电气工程—电力系统及自动化]