Energy Portfolio Mechanism for Hybrid Energy Sharing in Multimicrogrids Based on Coalitional Game

Currently, more and more renewable energy enters the market, and the traditional vertically integrated market can no longer guarantee the consumption of renewable energy. In order to promote local consumption of distributed resources and improve energy efficiency, the market mechanism based on energy sharing has emerged in recent years. This paper proposes a novel mechanism for multi-energy microgrids to participate in energy sharing in the electricity-heat market based on coalitional game. Three coalitional game models that share electricity only, heat only, and both electricity and heat are constructed, and their revenues are compared. Further, in order to encourage distributed resources to participate in the sharing and enhance the willingness and enthusiasm of market entities, the Shapley value is used to allocate revenues reasonably. In addition, the alternating direction method of multipliers is used to solve the problem by decomposing the whole into several subproblems for protecting privacy. Finally, the example validates the effectiveness of the proposed mechanism to increase the revenue of each multi-energy microgrid.