Uncertainty-aware prosumer coalitional game for peer-to-peer energy trading in community microgrids

Increasingly deployment of distributed renewable energy sources has driven the emergence of peer-to-peer (P2P) energy trading, which refers to trading energy directly among the end energy customers. This paper studies the feasibility and mechanism of establishing cooperation among different types of energy prosumers in a community microgrid environment with uncertainty. In particular, a coalitional game-based P2P energy trading framework is proposed, through which participating prosumers are enabled to form a coalition to share the energy trading profit by sufficiently considering the renewable energy and load uncertainties. To incentivize prosumers to participate in energy trading cooperation, some contract constraint rules are designed to ensure that the risk of the prosumer energy systems is controllable, and a theoretical analysis framework is presented to strictly prove the benefit of the prosumer coalition. A Shapely value-based payoff distribution scheme is designed to allocate profit for each prosumer in the coalition. Comprehensive numerical simulation is conducted to validate the proposed method.