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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Sustainable Energy Systems
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1531266
This article is part of the Research Topic Advances in Renewable Energy System Monitoring, Situational Awareness, and Control View all 18 articles

Dual H-Bridge Integrated Multiport DC Circuit Breaker for Bus Fault Interruption in HVDC Grids Supporting Large-Scale Renewable Energy Integration

Provisionally accepted
Hui Qin Hui Qin 1*Zhen Pan Zhen Pan 1*Yuxin Lu Yuxin Lu 2*Changyue zou Changyue zou 2*Xuebo Qiao Xuebo Qiao 2*Yunfeng Huang Yunfeng Huang 1
  • 1 Guangxi Power Grid Corporation, Nanning, China
  • 2 Electric Power Research Institute, CSG, Guangzhou, China

The final, formatted version of the article will be published soon.

    To address the technical challenge of rapid and reliable interruption of DC faults in offshore wind power DC collection and transmission systems, which are critical for large-scale renewable energy integration, this paper proposes an integrated multi-port DC circuit breaker (DCCB) with bus fault clearing capability based on a dual H-bridge configuration. By extending a pair of bridge arms in the H-bridge to connect to the DC bus and employing diodes in the load commutation switches (LCSs) to form the second H-bridge, the proposed DCCB not only achieves conventional line fault clearing but also has the ability to interrupt bus faults. A five-terminal offshore wind power DC transmission system simulation model was built in PSCAD/EMTDC to verify the performance of the DCCB under various operating conditions. The results demonstrate that the proposed multi-port DCCB can protect multiple DC lines effectively under different conditions.

    Keywords: offshore wind power, Multi-port, dc circuit breaker, H-bridge, DC fault

    Received: 20 Nov 2024; Accepted: 16 Dec 2024.

    Copyright: © 2024 Qin, Pan, Lu, zou, Qiao and Huang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Hui Qin, Guangxi Power Grid Corporation, Nanning, China
    Zhen Pan, Guangxi Power Grid Corporation, Nanning, China
    Yuxin Lu, Electric Power Research Institute, CSG, Guangzhou, China
    Changyue zou, Electric Power Research Institute, CSG, Guangzhou, China
    Xuebo Qiao, Electric Power Research Institute, CSG, Guangzhou, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.