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A Novel Traveling-wave Direction Criterion for Hybrid Multi-terminal HVDC System
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  • Botong Li,
  • Yuqi Li,
  • bin li,
  • Xiaolong Chen,
  • Liang Ji,
  • Qiteng Hong
Botong Li
Tianjin University

Corresponding Author:[email protected]

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Yuqi Li
Tianjin University
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bin li
Tianjin University
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Xiaolong Chen
Tianjin University
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Liang Ji
Shanghai University of Electric Power
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Qiteng Hong
University of Strathclyde
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Fast and accurate fault direction criteria is crucial for efficient protection in hybrid multi-terminal HVDC transmission systems. The current variation method is commonly used to identify fault direction but is affected by fault resistance and distributed capacitance. This paper proposes a new direction criterion based on the backward fault traveling-wave, which has stronger resistance to interference from transition resistance and operates at a faster speed than other methods. Additionally, this paper provides the time-domain expression of the traveling wave after multiple reflections between the fault point and the converter station port, enabling the calculation of the threshold setting for the criterion. The new direction criterion is tested in PSCAD/EMTDC, and simulation results demonstrate that it can accurately identify fault direction and has a strong ability to withstand transition resistance.
17 May 2023Submitted to IET Generation, Transmission & Distribution
18 May 2023Submission Checks Completed
18 May 2023Assigned to Editor
28 May 2023Reviewer(s) Assigned
13 Jul 2023Review(s) Completed, Editorial Evaluation Pending
22 Jul 2023Editorial Decision: Revise Major
28 Jul 20231st Revision Received
03 Aug 2023Submission Checks Completed
03 Aug 2023Assigned to Editor
06 Aug 2023Reviewer(s) Assigned
13 Aug 2023Review(s) Completed, Editorial Evaluation Pending
15 Aug 2023Editorial Decision: Accept