An improved DC line fault detection scheme using zone partition for MTDC wind power integration systems

Yang, Saizhao and Xiang, Wang and Wen, Jinyu (2022) An improved DC line fault detection scheme using zone partition for MTDC wind power integration systems. IEEE Transactions on Power Delivery, 37 (2). pp. 1109-1119. ISSN 0885-8977 (https://doi.org/10.1109/TPWRD.2021.3077473)

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Abstract

The MMC based DC grids are an effective solution to integrate bulk wind power. Under DC faults, the wind power is continuously fed into DC grids, resulting in large fault currents. To guarantee the uninterrupted and safe operation of healthy parts, DC faults should be detected and isolated selectively. Most existing DC fault detection schemes rely on large current-limiting reactors (CLR) to guarantee high selectivity. The reliability of them will be deteriorated under weak boundary conditions. Besides, some schemes fail to identify close-in faults. Though fault detection schemes independent of CLRs are proposed, they cannot work well for remote faults. Hence, to protect the entire transmission line with smaller CLRs, an improved DC fault detection scheme using zone partition is proposed. Firstly, according to different fault distances, internal faults are partitioned into four zones along the transmission line. The fault characteristics in different zones are analyzed. Then, the polarities and arrival times of traveling-waves are used to design the criteria dedicated to different zones. The proposed method is endurable to fault resistance and noise disturbance. Simulation results show that the MTDC wind power integration systems can operate safely during DC fault isolation.

  • Item type:Article
    ID code:76906
    Dates:
    Date
    Event
    30 April 2022
    Published
    4 May 2021
    Published Online
    30 April 2021
    Accepted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:29 Jun 2021 11:11
    Last modified:14 Apr 2024 00:56
    URI:https://strathprints.strath.ac.uk/id/eprint/76906
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