Research on Coordinated Control of PV- Storage Microgrid and Distribution Network

In order to solve the problems brought by the PV-storage microgrid embedded to distribution network, this paper proposes a hierarchical coordinated control scheme to alleviate negative effect. First, the characteristic of distribution network with microgrid is analyzed, the model of PV-storage microgrid is built and the interactive optimization objective function of microgrid and distribution network is proposed. Second, interactive model between microgrid and distribution network is established and coordinated control strategies are proposed and digitally simulated. Finally, the proposed scheme is implemented in a real-world PV-storage system and tested physically. The test results validate the proposed scheme and show the excellent performance in feasibility and reliability. Keywords-Hierarchical coordinated control; microgrid; distribution network; PV-storage; Scheduling optimization

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