Optimal Dispatch for Multi-microgrids: a Source-Grid-Load-Storage Collaboration Based Perspective

In order to improve the utilization rate of renewable energy under the goal of "emission peak and carbon neutrality", this paper studies the operation characteristics of source-grid-load-storage and establishes the source-grid-load- storage interactive dispatching strategies in the form of multi-microgrids, which increases the flexibility of electric energy regulation. During the dispatching process, the electric energy mainly shows self-sufficiency within the microgrid and mutual assistance between microgrids, which not only ensures the local consumption of renewable energy, but also relieves the pressure of the electric energy supply of other microgrids and reduces the dependence on the upper grid. Under grid-connected conditions, this paper proposes the optimal dispatching model of electric energy considering the economy of system operation and environmental maintenance, and adopts particle swarm optimization (PSO) algorithm to find the optimal solution in the analysis of arithmetic cases to verify the effectiveness of the dispatching strategy.