The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Electrical Breakdown Characteristics of Air according to Electrode Gap

전극 간격에 따른 공기의 절연파괴 특성에 관한 연구

  • Kang, Jong O (Dept. of Electrical and Electronic Engineering, Korea National University of Transportation) ;
  • Lee, Onyou (Dept. of Electrical and Electronic Engineering, Korea National University of Transportation) ;
  • Kim, Junil (Dept. of Electrical and Electronic Engineering, Korea National University of Transportation) ;
  • Bang, Seungmin (Dept. of Electrical and Electronic Engineering, Korea National University of Transportation) ;
  • Lee, Hongseok (Dept. of Electrical and Electronic Engineering, Korea National University of Transportation) ;
  • Lee, Jong Doug (Guju Technology, Inc.) ;
  • Kang, Hyoungku (Dept. of Electrical Engineering, Korea National University of Transportation)
  • Received : 2014.11.18
  • Accepted : 2014.11.26
  • Published : 2014.12.01
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Abstract

Recently in accordance with the rapid development of the industrial society, the accidents caused by dielectric breakdown have been increasing in power grid. It is important to prevent the dielectric breakdown of a high voltage apparatus to reduce the damage from electrical hazards. To establish an electrically reliable database of insulation design criteria for high voltage apparatus, a study on dielectric characteristics test is indispensable. In this study, dielectric characteristics according to field utilization factors (${\xi}$) which are represented as the ratio of mean electric field to maximum electric field are investigated. the dielectric breakdown experiments by using several kinds of electrode systems made with stainless steel are performed by AC breakdown voltage under air-insulation. Also, the experimental results are analyzed by the Weibull distribution. As a result, it is found that the dielectric characteristics of air-insulation are determined by ${\xi}$ as well as arrangement of electrode systems. It is considered that the results of this study would be applicable to designing the air-insulated high voltage apparatuses.

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References

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