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

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

초전도 한류기를 이용한 Bi-2223/Ag 선재의 퀜치 보호를 위한 기초 연구

Preliminary study on the quench protection of Bi-22231 Ag tape using superconducting fault current limiter

  • 두호익 (전북대학교 전기공학과) ;
  • 임성우 (한전전력연구원 전략기술연구소 초전도그룹) ;
  • 현옥배 (한전전력연구원 전략기술연구소 초전도그룹) ;
  • 황시돌 (한전전력연구원 전략기술연구소 초전도그룹) ;
  • 조철용 (전북대학교 기계공학과) ;
  • 박충렬 (전북대학교 전기공학과) ;
  • 한영성 (전북대학교 전기공학과)
  • 발행 : 2006.06.22
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초록

As an preliminary study for the quench protection of high temperature superconducting (HTS) cable using superconducting fault current limiter (SFCL), experimental research was carried out. The test circuit was composed of Bi-2223/Ag HTS tape and a SFCL made of YBCO thin films. In the normal state, the applied current of 56 A, which was critical current of HTS tape, could be flown through the circuit without resistive loss. Increasing the currents, the quench development of both materials was investigated from the voltage signal acquired from the resistance of the quenched superconductor. Up to around 10 times of the critical current was applied to the HTS tape and the current limiting characteristics of SFCL were investigated. In addition, for the finding out the optimal operating condition of SFCL such as the numbers of elements, a shunt resistor was applied to the SFCL and quench characteristics were analyzed as well.

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