The induced overvoltage between UHV AC and DC transmission lines built on the same tower under fault conditions

Qiuqin Sun, Shi Wei, Wah Hoon Siew, Hongshun Liu, Qingmin Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

3 Citations (Scopus)

Abstract

Rapid increase of the transmission capacity and environmental limit of the power transmission passage have indispensably promoted development of the AC/DC hybrid transmission lines on the same tower, especially for UHV systems being established in China. Unfortunately, severe electromagnetic coupling effects will inevitably exist between the UHV AC and DC transmission lines built on the same tower. The generating mechanisms, as well as the computational methodology, of both the inductive and capacitive coupling effects within the hybrid transmission lines are elucidated in the paper, then an equivalent circuitry model is established as to analyze the induced overvoltage within the hybrid transmission lines under different fault conditions. Further, the impacts on the induced overvoltage on the healthy line from key influential factors, such as the grounding fault resistance, the collocation and layout of DC filters and fault type, are accounted for in details. Specifically, phase-mode transform method is adopted to theoretically analyze the effect of transposition mode of the UHV AC transmission line as how to reduce the induced overvoltage within the hybrid transmission lines. The proposed method and analyzed results present reliable reference for realizing optimal design of the UHV AC/DC hybrid transmission lines.
Original languageEnglish
Title of host publication2009 Proceedings of the 44th International Universities Power Engineering Conference (UPEC)
Place of PublicationNew York
PublisherIEEE
Number of pages5
ISBN (Print)9781424468232
Publication statusPublished - 2009
EventThe 44th International Universities' Power Engineering Conference - Glasgow, United Kingdom
Duration: 1 Sep 20094 Sep 2009

Conference

ConferenceThe 44th International Universities' Power Engineering Conference
CountryUnited Kingdom
CityGlasgow
Period1/09/094/09/09

Keywords

  • poles and towers
  • HVDC power transmission
  • earthing
  • fault diagnosis
  • induced overvoltage
  • UHV AC and DC transmission lines
  • fault conditions

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  • Cite this

    Sun, Q., Wei, S., Siew, W. H., Liu, H., & Li, Q. (2009). The induced overvoltage between UHV AC and DC transmission lines built on the same tower under fault conditions. In 2009 Proceedings of the 44th International Universities Power Engineering Conference (UPEC) New York: IEEE.