Hierarchical Optimization Scheduling Strategy for Active Distribution Network With Multiple Microgrids Using Energy Router

Résumé fourni par la source

Microgrids (MGs) provide an effective approach for distributed generations (DGs) integration, yet current research lacks coordinated power transmission strategies, particularly in voltage regulation and economic dispatch. This paper introduces a grid-connected multiple MGs optimization system coordinated by an energy router (ER), which dynamically regulates power flows among MGs to enable fast and efficient energy allocation. To maximize the utilization of DGs and the mutual balance of MGs, a hierarchical optimal scheduling scheme is developed for MGs in distribution networks (DNs) under ER control. Compared to direct power supply from the DN, inter-MG power exchange is prioritized to minimize transmission losses. The proposed strategy adopts a hierarchical optimization framework, simultaneously minimizing power losses and maximizing economic benefits. The alternating direction method of multipliers (ADMM) is improved to solve the hierarchical optimization problem with binary variables, achieving decentralized collaborative control. Finally, the proposed strategy is simulated on the modified IEEE 33-node system. The results show that this strategy can improve the voltage quality of the DNs, reduce reliance of the multiple MGs on the DNs, and improve resource scheduling efficiency through inter-MG coordination.

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