Analysis of fault Current Limiting Characteristics due to Ratio of Inductances between Coil 1 and coil 2 in a Flux-lock Type SFCL

자속구속형 고온초전도 전류제한기의 인덕턴스 변화에 따른 전류제한 특성 분석

  • 박충렬 (전북대학교 전기공학과) ;
  • 임성훈 (전북대학교 공업기술연구센터) ;
  • 박형민 (조선대학교 전기공학과) ;
  • 최효상 (조선대학교 전기공학과) ;
  • 한병성 (전북대학교 전기공학과)
  • Published : 2005.09.01


A flux-lock type SFCL consists of two coils, which are wound in parallel each other through an iron core, and a HTSC thin film connected in series with coil 2. If the current of the HTSC thin film exceeds its critical current by the fault accident, the resistance generated of the HTSC thin film, and thereby the fault current can be limited by the impedance of the flux-lock type SFCL. The amplitude of fault current can be set by the impedance of the flux-lock type SFCL. In this paper, we investigated the variance of the limiting current due to the ratio of inductances between coil 1 and coil 2 in the flux-lock type SFCL through the computer simulations and short circuit tests. In addition, both the simulation results and experimental ones were compared each other. From the comparison of both the results, the simulation results agreed well with the experimental ones.


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