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Reliability assessment method of wind power DC transmission system based on level fault tree analysis

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  • Bai, Xueyan
  • Fan, Yanfang
  • Hou, Junjie

Abstract

The wind power direct current transmission system forms an essential constituent of the wind farm, and its reliability bears a direct and profound correlation with the secure and stable operation of the entire wind farm. This paper proposes a reliability assessment method for wind power DC transmission systems based on level fault tree analysis. In consideration of the operational idiosyncrasies of the pivotal equipment, specifically the modular multilevel converter, within the wind power direct current transmission system, the equipment-level fault tree reliability assessment method is utilized to precisely calculate the failure rate, thus proffering solid data underpinnings for the ensuing reliability assessment. Given the intricate electrical interconnections among each component within the wind power direct current transmission system, as well as the characteristic failure rate patterns of these individual elements, by leveraging the system-level fault tree reliability assessment method, an in-depth and comprehensive analysis of the reliability of both the overall system and its constituent parts is carried out. The simulation results unequivocally demonstrate that this method showcases remarkable effectiveness and conspicuous superiority in the relevant research domain.

Suggested Citation

  • Bai, Xueyan & Fan, Yanfang & Hou, Junjie, 2025. "Reliability assessment method of wind power DC transmission system based on level fault tree analysis," Energy, Elsevier, vol. 327(C).
    • Handle: RePEc:eee:energy:v:327:y:2025:i:c:s0360544225020687
    DOI: 10.1016/j.energy.2025.136426
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