IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v15y2023i17p12745-d1223056.html
   My bibliography  Save this article

Protection Scheme for Transient Impedance Dynamic-Time-Warping Distance of a Flexible DC Distribution System

Author

Listed:
  • Pinghao Ni

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Jinghan He

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Chuanjian Wu

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Dahai Zhang

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Zhaoxiang Yuan

    (State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China)

  • Zhihong Xiao

    (State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China)

Abstract

Flexible DC power distribution systems have characteristics such as rapid fault occurrence and fragile power electronics. DC faults usually result in rapid converter blocking (2–5 ms). However, existing protection schemes are susceptible to distributed capacitance, cannot tolerate long communication delays, and require artificial boundaries, among other features that make it impossible to combine speediness, selectivity, and reliability. A technique based on normalized transient impedance dynamic-time-warping (DTW) distance is proposed to improve the performance of the protection scheme. First, the fault equivalent circuit of the flexible DC distribution system (±10 kV) is established, and its transient impedance expression is derived accordingly. Subsequently, the expression components are split and their fault characteristics are resolved separately. Finally, the protection scheme for normalized DTW distance is proposed based on the transient impedance fault characteristics. A flexible DC distribution system (±10 kV) is established to verify the performance of the scheme.

Suggested Citation

  • Pinghao Ni & Jinghan He & Chuanjian Wu & Dahai Zhang & Zhaoxiang Yuan & Zhihong Xiao, 2023. "Protection Scheme for Transient Impedance Dynamic-Time-Warping Distance of a Flexible DC Distribution System," Sustainability, MDPI, vol. 15(17), pages 1-20, August.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:12745-:d:1223056
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/15/17/12745/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2071-1050/15/17/12745/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:15:y:2023:i:17:p:12745-:d:1223056. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.