Design of Multi-Microgrid Energy Trading Mechanism Based on Improved Nash Bargaining Method in Electricity Market Environment

被引：0
作者：
Shuai X. [1 ]
Wang X. [1 ]
Yuan S. [1 ]
Chen G. [1 ]
Huang Y. [2 ]
机构：
[1] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an
[2] State Grid Shanghai Electric Power Company, Shanghai
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2021年 / 55卷 / 11期
关键词：
Cooperative game; Dynamic electricity price; Electricity market; Energy transaction; Multi-microgrid; Nash bargaining; Non-cooperative game;
D O I：
10.7652/xjtuxb202111011
中图分类号：
学科分类号：
摘要：
It is necessary to design a scientific and reasonable energy trading mechanism between multiple microgrids. In view of the two issues of the imperfect reflection of the degree of competition in the trading market and the unreasonable benefit distribution in the process of multi-microgrid transactions, a multi-microgrid transaction mechanism based on improved Nash bargaining method is proposed, and the operating model and profit model of each unit in a microgrid are constructed. Considering that electricity can be traded between each microgrid to realize energy complementation among the microgrids, a dynamic electricity price model among multiple microgrids is proposed, and then a multi-microgrid market transaction model is established. The results show that the proposed multi-microgrid energy transaction model can reflect the degree of competition between microgrids. With the goal of maximizing the overall profit of the microgrids, a multi-microgrid cooperative operation model is suggested, and the operating profit of each microgrid under the non-cooperative game is regarded as the point of negotiation breaking point, then Nash bargaining method is used to distribute the profit of each microgrid. The results of the three modes of independent operation, non-cooperative game and cooperative game of each microgrid are compared and analyzed to verify that the proposed method can maintain the enthusiasm of each microgrid to participate in cooperation. Taking four microgrids as an example, the Yalmip tool and IPOPT solver are used for modelling and simulating on MATLAB platform. Compared with the independent operation of each microgrid, the total profit of the microgrids increases by 766.98 yuan, and the interaction electricity with the main network reduces by 153.08 kW•h. Compared with all microgrids in non-cooperative game mode, the proposed distribution method increases the profit of the four microgrids by 1.07%, 0.76%, 0.66%, and 0.88% respectively, which encourages each microgrid to participate in the cooperation. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.
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页码：97 / 105
页数：8
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