Trading strategy and benefit optimization of load aggregators in integrated energy systems considering integrated demand response: A hierarchical Stackelberg game
2022
Li, Songrui | Zhang, Lihui | Nie, Lei | Wang, Jianing
With the rise of integrated energy systems, the load aggregator's role in forming a connection between the demand and supply sides has been gaining increasing importance. Traditional demand response has gradually developed into integrated demand response. Considering consumer psychology, a bilateral integrated demand response model between the integrated energy production base, load aggregator, and users is established; the model is a hierarchical Stackelberg game. Simultaneously, a mixed integer quadratic programming-multi-verse optimizer distributed algorithm is proposed to solve the game model. During the continuous interactive gaming process, the utilities of all parties can be maximized while achieving a balance of benefits. Considering whether price incentives should be implemented and including consumers' psychological characteristics, three scenarios were established for case analysis. The results show that the proposed trading strategy can increase the benefits of the integrated energy production base, load aggregator, and users by 5%, 4%, and 23%, respectively. In addition, the penalty cost of abandoning wind and solar power and of power reserve capacity are reduced by $34.4 and $9, respectively. The introduction of the hierarchical game model ensures the sustainability of the mechanism and provides innovative ideas for the development of integrated energy systems.
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