A novel fault let-through energy based fault location for LVDC distribution networks

Wang, Dong and Psaras, Vasileios and Emhemed, Abdullah and Burt, Graeme M. (2020) A novel fault let-through energy based fault location for LVDC distribution networks. IEEE Transactions on Power Delivery. ISSN 0885-8977 (https://doi.org/10.1109/TPWRD.2020.2998409)

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Abstract

Low Voltage Direct Current (LVDC) distribution systems have recently been considered as an alternative approach to electrical system infrastructure as they provide the additional flexibility and controllability required to facilitate the integration of more low carbon technologies (LCTs). However, DC protection systems and, more specifically high accuracy DC fault location, have been recognised as a key challenge to facilitating post-fault network maintenance. Most of the existing fault location techniques rely on current derivative or communications-based methods that are either very sensitive to noise, or require a high level of data synchronisation. Fault energy has been recognized as a reliable indicator of more accurate fault location estimations. Therefore, this paper develops a mathematical model for describing fault energy during the transient period of DC faults. The method subsequently proposes a new fault let-through energy based DC fault location working strategy to facilitate post-fault network maintenance. The proposed method does not require data synchronisation regardless of the voltage, current, and the size of the converters connected to the LVDC feeder. The capabilities of the proposed fault location strategy are validated against different faults applied on an LVDC test network in PSCAD/EMTDC and shown to be more reliable and accurate than existing methods.

ORCID iDs

Wang, Dong, Psaras, Vasileios, Emhemed, Abdullah and Burt, Graeme M. ORCID logoORCID: https://orcid.org/0000-0002-0315-5919;
  • Item type:Article
    ID code:72551
    Dates:
    Date
    Event
    28 May 2020
    Published
    28 May 2020
    Published Online
    25 May 2020
    Accepted
    Notes:© 2020 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:03 Jun 2020 15:00
    Last modified:11 Nov 2024 12:42
    URI:https://strathprints.strath.ac.uk/id/eprint/72551
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