A Novel Distributed Economic Power Dispatch Method for Interconnected Microgrids

Interconnected microgrids are a new type of power system that interconnects multiple microgrids through tie‐lines and communications to realize coordinated control and optimized management. In many existing applications, the interconnected microgrids need a central controller to realize the scheduling of generators, energy storage systems, and flexible loads. However, each microgrid belongs to different owners, rendering the centralized control inconvenient. Thus, a novel distributed method for solving the economic dispatch problem (EDP) of interconnected microgrids is proposed in this paper. First, the EDP is reformulated to incorporate a penalty, and decomposed to subproblems for the microgrids. Then, a penalty‐based distributed economic dispatch method (PDED) is proposed accordingly for each microgrid to solve the entire problem in parallel. Rigorous theoretical analysis has been provided to guarantee the equivalence of reformulation and the convergence of PDED to optimal solutions. Simulations have also been conducted to demonstrate the effectiveness and advantages over existing methods. © 2025 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.