Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of Over-current Characteristics in YBCO Coated Conductor

YBCO Coated Conductor의 과전류 특성해석

  • Lee, C. (Electro-Mechanical Research Institute, R&D Division, Hyundai Heavy Industries, Co., LTD.) ;
  • Nam, K. (Electro-Mechanical Research Institute, R&D Division, Hyundai Heavy Industries, Co., LTD.) ;
  • Kang, H. (Electro-Mechanical Research Institute, R&D Division, Hyundai Heavy Industries, Co., LTD.) ;
  • Ko, T.K. (Department of Electrical Engineering, Yonsei University) ;
  • Seok, B.Y. (Electro-Mechanical Research Institute, R&D Division, Hyundai Heavy Industries, Co., LTD.)
  • 이찬주 (현대중공업 기술개발본부 기계전기연구소) ;
  • 남관우 (현대중공업 기술개발본부 기계전기연구소) ;
  • 강형구 (현대중공업 기술개발본부 기계전기연구소) ;
  • 고태국 (연세대학교 전기전자공학과) ;
  • 석복렬 (현대중공업 기술개발본부 기계전기연구소)
  • Published : 2006.07.12
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Abstract

In order to develop a high temperature superconducting(HTS) coil for the fault current limiter(FCL), the over-current characteristics in YBCO coated conductor(CC) with Ni-W alloy substrate are analyzed. The HTS wire is wound by bifilar winding method for resistive current limitation and it is operated in 65K sub-cooled nitrogen. In order to analyze the resistance and the temperature characteristics of the CC wire, an analysis program is developed considering all the composition materials except the buffer layer. Using this program, the temperature rise, the resistance development and the current limitation of CC are calculated depending on the applied voltage and the stabilizer materials. According to the analysis results, under the temperature restriction of 300K, the maximum voltage per meter is determined as 40V/m if the stabilizer is $25{\mu}m$ thick stainless steel at each side. Finally, the wire length needed for the distribution level HTS FCL is estimated.

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