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Electrical Insulation Diagnosis and Breakdown Prediction of Gas Insulated Power Apparatus Based on Partial Discharge Mechanism

  • H. Okubo
  • N. Hayakawa

Abstract

Partial discharge (PD) has been recognized as an important signal of pre-breakdown phenomenon and the PD measurement has been utilized for electrical insulation diagnosis of SF6 gas insulated equipment such as switchgears (GIS) and circuit breakers (GCB). However, it can be said that the PD measurements, so far, have not always been based on their physical mechanisms, because PD phenomena are very complicated and hard to be measured precisely. Thus, it is generally very difficult to predict breakdown (BD) and life time of electrical insulation.

Keywords

Streamer Discharge Partial Discharge Electron Avalanche Waveform Parameter Leader Discharge 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    H.Okubo, T.Takahashi, N.Hayakawa, Investigation of Partial Discharge Mechanism and Breakdown Prediction Technique in SF6 Gas Insulated Systems, Fourth Workshop & Conference on EHV Technology, Workshop Papers, pp.8–14 (1998)Google Scholar
  2. 2.
    T.Takahashi, T.Yamada, N.Hayakawa, H.Okubo, Space Charge Behavior in SF6 Gas and Sequential Generation of PD Pulses, IEEE Trans. on Dielectrics and Electrical Insulation, Vol.7, No.l, pp. 141–145 (2000)CrossRefGoogle Scholar
  3. 3.
    H.Okubo, M.Yoshida, T.Takahashi, T.Hoshino, M.Hikita, M.Miyazaki, Partial Discharge Measurement in a Long Distance SF6 Gas Insulated Transmission Line (GIL), IEEE Trans. on Power Delivery, Vol.13, No.3, pp.683–690 (1998)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

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

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