Mixed Game Theory Based to Thermoelectric Cooperative Operation of Community Micro-Energy Grids Considering Subject Contribution and Energy Sharing

Abstract

With the increasing popularity of flexible resources, the community micro-energy grids (CMEGs) that integrates traditional energy with renewable energy and energy storage has become the trend of future development for energy supply. In this context, a mixed game theory based optimal operational scheduling method for CMEGs with energy sharing is proposed in this paper to solve the cooperative management problem. In this method, the community users were treated as a load aggregator(LA). The framework for energy sharing among CMEGs has been established, and a mixed game simulation model was built with the microgrid operator (MGO) and multiple load aggregator (MLA) as the main components. To ensure a fair distribution of cooperative benefits among LAs, an asymmetric bargaining model based on each subject's participation contribution degree was proposed. The case study with asymmetric bargaining model demonstrated that the cooperative game mode, compared to the traditional independent operation mode, led to a reduction in energy consumption costs for each LA, a 5.1% decrease in electricity transaction between MLA and MGO, and a 10.87% decrease in heat transaction. Therefore, the application of an asymmetric bargaining model based on different contribution  could promote a fairer distribution of benefits among communities and increases LAs’ income.

Keywords: Community micro-energy grid, mixed game, energy sharing, subject contribution degree, Asymmetric bargaining