Partial Discharge Mechanism and Current Waveforms in Electronegative Gases and Gas Mixtures

  • H. Okubo
  • T. Ishida
  • T. Yamada
  • N. Hayakawa


Partial discharge (PD) measurement is expected to be an effective method for electrical insulation diagnosis and breakdown prediction of the power apparatus. In order to establish the reliable insulation diagnostic techniques, physical mechanism of PD phenomena are required to be clarified. Especially, electronegative gases and gas mixtures are of interest from the viewpoint of high insulation performance due to corona stabilization effect. Although many investigations1,2 have been so far carried out, PD phenomena have not yet been fully understood.


Partial Discharge Electron Avalanche Critical Electric Field Critical Electric Field Strength High Insulation Performance 
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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • H. Okubo
    • 1
  • T. Ishida
    • 1
  • T. Yamada
    • 1
  • N. Hayakawa
    • 1
  1. 1.Department of Electrical EngineeringNagoya UniversityNagoyaJapan

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