A distribution-market based game-theoretical model for the coordinated operation of multiple microgrids in active distribution networks

摘要

With an increasing number of microgrids being integrated into active distribution networks (ADN), it becomes a challenge how to efficiently coordinate the operations of multiple microgrids (MGs) which are individual entities seeking for their self-interests. In this paper, a bi-level noncooperative game-theoretical model is proposed for MGs operation in ADN based on the distribution system operator (DSO) market and distribution locational marginal prices (DLMPs). The upper level is modeled as a game among MGs who develop their optimal strategies to bid into the DSO market aiming at maximizing their own payoffs. In the lower-level, the DSO of the ADN implements the market-clearing and calculates the DLMPs. An iterative solving algorithm is proposed to find the Nash equilibrium of the game model. The case studies show that through the proposed model, the coordinated operation of MGs is achieved while satisfying the security constraints of the ADN.