An enhanced Series-Connected Offshore Wind Farm (SC-OWF) system considering fault resiliency

Tait, James and Wang, Shuren and Ahmed, Khaled H. (2024) An enhanced Series-Connected Offshore Wind Farm (SC-OWF) system considering fault resiliency. IEEE Transactions on Power Delivery, 39 (1). pp. 352-362. ISSN 0885-8977 (https://doi.org/10.1109/TPWRD.2022.3219373)

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Abstract

The series-connected offshore wind farm (SC-OWF) is a promising offshore wind generation solution to mitigate the need of centralized offshore high-voltage/power converter stations. Predominantly, researchers have focused on the steady-state operation and control of SC-OWFs, without considering the system-level characteristics and ability to ride-through dc side and ac network faults. This paper proposes an enhanced system for SC-OWF applications with fault-resilient capability, where comprehensive circuit configuration and protection strategies are articulated to minimize the negative effects caused by various types of dc and ac faults. For the offshore wind farm architecture, a grouping scheme is adopted where a substation based on disconnectors and diodes is proposed to realize prompt fault bypass/isolation and protection functions in the event of offshore system faults. Additionally, an onshore fault-tolerant modular multilevel converter (MMC) with modified dc-system-oriented control is employed to enable smooth and secure operation under steady-state and fault conditions. The proposed SC-OWF system is quantitatively substantiated by time-domain simulations where four ac/dc fault cases are considered, and the results consolidate the feasibility of the proposed configuration and control, indicating fault resilience of the SC-OWF system. Additionally, size, weight and cost estimations of the proposed offshore substation are presented and compared to a conventional MMC offshore station, to further highlight the merits of the proposed solution

ORCID iDs

Tait, James, Wang, Shuren ORCID logoORCID: https://orcid.org/0000-0002-2311-3652 and Ahmed, Khaled H.;
  • Item type:Article
    ID code:83094
    Dates:
    Date
    Event
    1 February 2024
    Published
    3 November 2022
    Published Online
    3 November 2022
    Accepted
    Notes:© 2022 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:08 Nov 2022 09:52
    Last modified:11 Nov 2024 13:41
    URI:https://strathprints.strath.ac.uk/id/eprint/83094
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