Electric Power ›› 2022, Vol. 55 ›› Issue (12): 168-178.DOI: 10.11930/j.issn.1004-9649.202209094

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Analysis of Distributed Green Power Transaction Optimization Based on Nash Bargaining Theory

ZHANG Yan1, QIAO Songbo2, XU Qifeng2, YU Jing3   

  1. 1. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, China;
    2. Zhejiang Electric Power Trading Center Co., Ltd., Hangzhou 310020, China;
    3. Zhejiang Huayun Information Technology Co., Ltd., Hangzhou 310051, China
  • Received:2022-09-22 Revised:2022-11-07 Published:2022-12-28
  • Supported by:
    This work is supported by Science and Technology Project of SGCC (Research and Demonstration Application of Green Power Trading Mechanism and Key Technologies Serving the Construction of New Power System, No.B311DJ220002)

Abstract: In order to promote the market-oriented consumption of distributed green power and improve the operation efficiency of distributed green power units, this paper studies the cooperative trading mode of distributed power generation operators, energy storage operators and flexible load aggregators that aggregate distributed green power by using virtual power plant joint technology. Firstly, the optimal operation model of each subject is established under the premise of energy transaction between each subject, and then the multi-agent cooperative game model is established based on Nash bargaining theory. In order to better solve the cooperative game model, the model is transformed into a sub-problem of maximizing the total benefit of cooperative operation and a sub-problem of asymmetric income distribution. The alternating direction multiplier method is used to solve the two sub-problems in a distributed manner. Finally, the effectiveness of the proposed model is further verified by simulation. The conclusion shows that participating in power cooperative trading can effectively improve the operating efficiency of distributed green power units.

Key words: distributed power supply, green electricity transaction, Nash bargaining, cooperative game, alternating direction multiplier method