Coordinated economic dispatch and cost allocation of cooperative multi-microgrids

This study models the cooperative behaviours of multi-microgrid (MMG) in order to achieve higher energy efficiency and operation economy. Under the framework of cooperative game theory, microgrid members aggregate as one grand coalition and are scheduled via coordinated economic dispatch. Furthermore, a Nash–Harsanyi (N–H) cost allocation scheme is proposed to ensure a fair cost sharing among the players. Considering the combinatorial explosive characteristic of the cost allocation problem, a bi-level programming algorithm is designed to quickly pin the N–H share. Case studies with a MMG system demonstrate the advantages of microgrid cooperation and the robustness of the formulated grand coalition, as well as the computation efficiency of the proposed cost sharing method.