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Flexible resource security regulating capability for distribution systems: Concept, method, and applications

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Listed:
  • Xiao, Jun
  • Li, Chengjin
  • He, Guowei
  • Lv, Zihan
  • Sun, Gang
  • Zhou, Yupeng
  • Liang, Haishen

Abstract

The integration of multiple flexible resources in the distribution system calls for updated security analysis, especially considering flexible resource power regulating. This paper proposes the flexible resource security regulating capability (SRC) for distribution systems. First, the flexible resource SRC is defined as the feasible maximum power regulation amount at a given time within a certain area that meets the system security demand direction and can last longer than the security demand time. Several specific SRCs are proposed, including the node SRC, feeder SRC, available SRC, and priority SRC. The node SRC uniformly quantifies the SRC of different flexible resources. The feeder SRC provides the flexible resource SRC at the feeder level. Second, the calculation methods of the SRCs are presented. Third, the application of SRC is explored, in which a real-time security monitoring, warning, and emergency control method with SRC is proposed. Moreover, the scheme of integrating SRC-related functionalities into the DSCADA and DMS is presented. Finally, the proposed SRCs are verified in the case study. Compared with existing researches, SRC is suitable for security analysis while other metrics are not. SRC can provide better compatibility with diverse flexible resources and faster security emergency control.

Suggested Citation

  • Xiao, Jun & Li, Chengjin & He, Guowei & Lv, Zihan & Sun, Gang & Zhou, Yupeng & Liang, Haishen, 2025. "Flexible resource security regulating capability for distribution systems: Concept, method, and applications," Applied Energy, Elsevier, vol. 382(C).
    • Handle: RePEc:eee:appene:v:382:y:2025:i:c:s0306261924026370
    DOI: 10.1016/j.apenergy.2024.125253
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    References listed on IDEAS

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