Predictive maintenance of vacuum switchgear

Su Sheng, Zeng Xiangjun, K. K. Li, Wai Lok Chan, Li Weiguo

Research output: Journal article publicationConference articleAcademic researchpeer-review

5 Citations (Scopus)


The vacuum switchgear interrupts short circuit current with vacuum interrupter. The internal pressure of vacuum interrupter, which can only be measured in an undetached approach, is the key to the arc interrupting capability of vacuum switchgear. An electric field measurement based approach is developed in this paper. This approach and the Magnetron discharge current measurement based approach are employed in combination to detect the internal pressure of the vacuum switchgear to facilitate the predict replacement of the vacuum interrupter of the switchgear. The Magnetron discharge based approach is employed to calibrate the internal pressure within vacuum interrupter accurately offline and the electric field measurement based approach is employed to detect the deterioration trends online. The apparatus developed followed by the electric field measurement approach has been applied on three power utilities for about three years and the measured data with aforementioned two approaches are provided in this paper.
Original languageEnglish
Pages (from-to)1737-1740
Number of pages4
JournalConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Publication statusPublished - 1 Dec 2004
EventConference Record of the 2004 IEEE Industry Applications Conference; 39th IAS Annual Meeting - Seattle, WA, United States
Duration: 3 Oct 20047 Oct 2004


  • Electric field measurement based approach
  • Internal pressure Inspection
  • Magnetron discharge based approach
  • Predictive maintenance

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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