计及源荷不确定性的多综合能源微网协同优化运行策略  

Co-Optimized Operation Strategy for Multiple Integrated Energy Microgrids Considering Source-Load Uncertainty

作　　者：曹猛 解超 尹纯亚 张高航 CAO Meng;XIE Chao;YIN Chunya;ZHANG Gaohang(School of Electrical Engineering,Xinjiang University,Urumqi 830047,Xinjiang,China)

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《电网与清洁能源》2025年第3期112-124,共13页Power System and Clean Energy

基　　金：新疆维吾尔自治区重点研发计划项目(2022B01016-4)。

摘　　要：综合能源微网(integrated energy microgrids,IEM)因其具有灵活的产销特性,为分布式可再生能源消纳提供了有效支撑,但因“灵活”导致其应对新能源随机性出力和多能负荷功率不确定性能力差,出现能源利用率低等问题。提出一种计及源荷不确定性的多IEM协同优化运行策略。建立含电热气多能耦合的综合能源微网模型,并引入虚拟储能(virtual energy storage,VES);采用鲁棒优化的方法处理源荷双侧不确定性对微网的影响;为探寻公平合理的能量交互机制,基于纳什谈判建立多IEM合作运行模型,并将谈判的原问题等效转化为2个子问题求解(一是求解多IEM系统运行效益最大化;二是求解多IEM间电能交互收益最大化)。为保护IEM的隐私,采用交替方向乘子法(alternating direction multiplier method,ADMM)对2个子问题进行分布式求解。算例结果表明,合作后IEM系统运行成本降低了10.7%,风光消纳率达到95%以上,同时提升了多IEM系统抗不确定性风险的能力。The flexible production and sales characteristics of integrated energy microgrids(IEM)provide effective support for distributed renewable energy consumption,however,this"flexibility"results in poor ability to cope with the uncertainty of new energy random power and multi-energy load power,and leading to low energy utilization.To address this,a multi-IEM co-optimization operation strategy considering the source-load uncertainty is proposed in the paper.Firstly,an integrated energy microgrid model that couples electricity,heat and gas is established,and a virtual energy storage(VES)is introduced.Secondly,a robust optimization approach is employed to deal with the impact of source-load bilateral uncertainty on microgrids.Next,to establish a fair and reasonable energy interaction mechanism,a multi-IEM cooperative operation model is developed based on the Nash negotiation.The original negotiation problem is equivalently transformed into 2 subquestions for solution.Sub-question 1 aims to maximize the operational benefits of the multi-IEM system,while subquestion 2 seeks to maximize the benefits of power interactions between multi-IEMs..Finally,to protect the privacy of IEMs,the alternating direction multiplier method(ADMM)is utilized to solve the 2 sub-questions in a distributed manner.The results of the example demonstrate that the operating cost of the IEM system has been reduced by 8.73%following cooperation,and the accommodation rate for wind and solar power has exceeded 95%,enhancing the multi-IEM system's ability to withstand the risks associated with uncertainty.

关 键 词：综合能源微网 纳什谈判 交替方向乘子法 鲁棒优化 虚拟储能 

分 类 号：TM73[电气工程—电力系统及自动化]