Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Electrical Insulation Characteristics of HTS SMES

초고온초전도 SMES의 절연특성

  • Cheon, Hyeon-Gweon (Department of Electrical Engineering, Gyeongsang National University and Automation and Computer Research Centre of Engineering Research Institute) ;
  • Choi, Jae-Hyeong (Department of Electrical Engineering, Gyeongsang National University and Automation and Computer Research Centre of Engineering Research Institute) ;
  • Kim, Hae-Jong (Korea Electrotechnology Research) ;
  • Seong, Ki-Chul (Korea Electrotechnology Research) ;
  • Kim, Sang-Hyun (Department of Electrical Engineering, Gyeongsang National University and Automation and Computer Research Centre of Engineering Research Institute)
  • Published : 2005.07.07
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Abstract

Toward the practical applications, on operation of conduction-cooled HTS SMES at temperatures well below 77 K should be investigated, in order to take advantage of a greater critical current density of HTS and considerably reduce the size and weight of the system. Recently, research and development concerning application of the conduction-cooled HTS SMES that is easily movement are actively progressing in Korea. Electrical insulation under cryogenic temperature is a key and an important element in the application of this apparatus. Using multi wrapped copper by polyimide film for HIS SMES, the breakdown characteristics of models for turn-to-turn, that is surface contact model, were investigated under ac and impulse voltage at 77 K. A material that is Polyimide film (Kapton) 0.025 mm thickness is used for multi wrapping of the electrode. Statistical analysis of the results using Weibull distribution to examine the wrapping number effects on breakdown voltage under ac and impulse voltage in $LN_2$ was carried.

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