DC fault detection and location in meshed multi-terminal HVDC systems based on DC reactor voltage change rate

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Li, Rui and Xu, Lie and Yao, Liangzhong (2017) DC fault detection and location in meshed multi-terminal HVDC systems based on DC reactor voltage change rate. IEEE Transactions on Power Delivery, 32 (3). pp. 1516-1526. ISSN 0885-8977 (https://doi.org/10.1109/TPWRD.2016.2590501)

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Abstract

The change rate of the DC reactor voltage with predefined protection voltage thresholds is proposed to provide fast and accurate DC fault detection in a meshed multi-terminal HVDC system. This is equivalent to the measurement of the second derivative of the DC current but has better robustness in terms of EMI noise immunization. In addition to fast DC fault detection, the proposed scheme can also accurately discriminate the faulty branch from the healthy ones in a meshed DC network by considering the voltage polarities and amplitudes of the two DC reactors connected to the same converter DC terminal. Fast fault detection leads to lower fault current stresses on DC circuit breakers and converter equipment. The proposed method requires no telecommunication, is independent of power flow direction, and is robust to fault resistance variation. Simulation of a meshed three-terminal HVDC system demonstrates the effectiveness of the proposed DC fault detection scheme.

ORCID iDs

Li, Rui ORCID logoORCID: https://orcid.org/0000-0001-8990-7546, Xu, Lie ORCID logoORCID: https://orcid.org/0000-0001-5633-7866 and Yao, Liangzhong;
  • Item type:Article
    ID code:56936
    Dates:
    Date
    Event
    30 June 2017
    Published
    12 July 2016
    Published Online
    9 July 2016
    Accepted
    Notes:© 2016 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:12 Jul 2016 08:56
    Last modified:16 Dec 2024 22:54
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/56936
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