基于非对称纳什谈判的多微网电能共享运行优化策略  

Operation Optimization Strategy of Multi-microgrids Energy Sharing Based on Asymmetric Nash Bargaining

作　　者：吴锦领 楼平 管敏渊 黄宇宙 张炜鑫 曹元成[1] WU Jinling;LOU Ping;GUAN Minyuan;HUANG Yuzhou;ZHANG Weixin;CAO Yuancheng(State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China;Huzhou Power Supply Company of State Grid Zhejiang Electric Power Company Limited,Huzhou 313000,Zhejiang Province,China)

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074 [2]国网浙江省电力有限公司湖州供电公司,浙江省湖州市313000

出　　处：《电网技术》2022年第7期2711-2721,共11页Power System Technology

基　　金：国家电网公司科技项目(5211UZ2000K1)。

摘　　要：推进可再生能源高效利用,实现电力系统低碳化运行成为电力系统改革的重要方向。该文首先构建了包含电热气多能协同的微电网模型,考虑了含有碳配额和碳交易的优化运行机制,并在热电联产机组模型中改进加入了碳捕集系统和电转气装置,以降低碳排放。然后,基于纳什谈判理论建立了多微网电能共享合作运行模型,进而将其分解为微网联盟效益最大化子问题和合作收益分配子问题,选择交替方向乘子法分布式求解,从而有效保护各主体隐私。在合作收益分配子问题中,提出以非线性能量映射函数量化各参与主体贡献大小的非对称议价方法,各微网分别以其在合作中的电能贡献大小为议价能力相互谈判,以实现合作收益的公平分配。最后,仿真结果验证了所提方法的有效性。结果表明,通过所提的多微网电能共享方法,微网联盟收益实现最大化;并且,微网联盟的合作收益基于各微网的能量贡献大小实现了公平分配;在碳排放方面,结果证明了碳捕集联合电转气系统,以及微网间的能量共享方法,都能够有效减少微电网运行过程中的碳排放量。Promoting the efficient use of renewable energy and achieving low-carbon operation has become an important direction for the power system reform.This paper first builds a microgrid model that includes multi-energy synergy between electricity,heat and gas.Considering the optimal dispatch under the carbon allowances and carbon trading,the carbon capture systems and the power-to-gas devices are added to the integrated energy system to reduce carbon emission.Then,based on the Nash bargaining theory,a multi-microgrids energy sharing model is established.Then,the model is decomposed into the sub-problems of the alliance benefit maximization and the cooperative benefits distribution.The alternating direction method of the multiplier(ADMM)is used to solve the problems,effectively protecting the privacies of the different parts.In the sub-problem of cooperative benefits distribution,an asymmetric bargaining method that quantifies the contribution of each participant with a nonlinear energy mapping function is proposed.Each microgrid negotiates with one aother based on its power contribution as the bargaining power to realize the fair distribution of cooperative benefits.Finally,the simulation results verify the effectiveness of the proposed method.The results show that through the proposed energy sharing method,the benefits of the microgrid alliance are maximized and the microgrid operating costs are significantly reduced.The benefits of cooperation are fairly distributed based on their contributions.In terms of carbon emissions,the results prove that the carbon capture,combined with the power-to-gas system and the energy sharing method,will effectively reduce carbon emissions of the microgrid.

关 键 词：综合能源系统 电转气 碳捕集 P2P电能交易 非对称议价 低碳优化运行 

分 类 号：TM721[电气工程—电力系统及自动化]