With more and more distributed generator (DG) and energy storage devices being integrated into the distribution network, the distribution network can improve its self-healing ability after faults. At the same time, the role of information systems in the distribution network cannot be ignored. Therefore, this article proposes a distribution network fault recovery strategy that considers distributed energy storage and information system constraints. Based on DG output, energy storage power, and remaining energy storage, the island range is divided, and then the network is reconstructed to supply power to other loads that have not been restored. The role of the information physical coupling system in fault recovery is compared and analyzed. Finally, the effectiveness of the proposed strategy was verified through numerical simulation, and the results showed that this strategy can ensure priority recovery of important loads during fault recovery, and the utilization rate of new energy is improved when considering energy storage.

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A Fault Recovery Strategy for Distribution Networks Considering Distributed Energy Storage and Information Systems

  • Guangru Zhang,
  • Jun Zhao,
  • Zhenqi Ma,
  • Jie Chen,
  • Haodong Ren

摘要

With more and more distributed generator (DG) and energy storage devices being integrated into the distribution network, the distribution network can improve its self-healing ability after faults. At the same time, the role of information systems in the distribution network cannot be ignored. Therefore, this article proposes a distribution network fault recovery strategy that considers distributed energy storage and information system constraints. Based on DG output, energy storage power, and remaining energy storage, the island range is divided, and then the network is reconstructed to supply power to other loads that have not been restored. The role of the information physical coupling system in fault recovery is compared and analyzed. Finally, the effectiveness of the proposed strategy was verified through numerical simulation, and the results showed that this strategy can ensure priority recovery of important loads during fault recovery, and the utilization rate of new energy is improved when considering energy storage.