Operation of offshore wind farms connected with DRU-HVDC transmission systems with special consideration of faults

Li, R. and YU, L. and Xu, L. (2019) Operation of offshore wind farms connected with DRU-HVDC transmission systems with special consideration of faults. Global Energy Interconnection, 1 (5). pp. 608-617. ISSN 2590-0358 (https://doi.org/10.14171/j.2096-5117.gei.2018.05.0...)

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Abstract

The diode rectifier unit (DRU)-based high-voltage DC (DRU-HVDC) system is a promising solution for offshore wind energy transmission thanks to its compact design, high efficiency, and strong reliability. Herein we investigate the feasibility of the DRU-HVDC system considering onshore and offshore AC grid faults, DC cable faults, and internal DRU faults. To ensure safe operation during the faults, the wind turbine (WT) converters are designed to operate in either current-limiting or voltage-limiting mode to limit potential excessive overcurrent or overvoltage. Strategies for providing fault currents using WT converters during offshore AC faults to enable offshore overcurrent and differential fault protection are investigated. The DRU-HVDC system is robust against various faults, and it can automatically restore power transmission after fault isolation. Simulation results confirm the system performance under various fault conditions.

ORCID iDs

Li, R. ORCID logoORCID: https://orcid.org/0000-0001-8990-7546, YU, L. ORCID logoORCID: https://orcid.org/0000-0002-0889-7751 and Xu, L. ORCID logoORCID: https://orcid.org/0000-0001-5633-7866;
  • Item type:Article
    ID code:66403
    Dates:
    Date
    Event
    20 February 2019
    Published
    29 November 2018
    Accepted
    8 November 2018
    Submitted
    Notes:Copyright © 2018 Global Energy Interconnection Group Co. Ltd. Published by Elsevier B.V. Rui Li, Lujie Yu, Lie Xu, Operation of offshore wind farms connected with DRU-HVDC transmission systems with special consideration of faults, Global Energy Interconnection, Volume 1, Issue 5, 2018, Pages 608-617, https://doi.org/10.14171/j.2096-5117.gei.2018.05.010
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:18 Dec 2018 11:36
    Last modified:11 Nov 2024 12:10
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/66403
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