Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Study on the Reliability of Superconducting Fault Current Limiter

초전도한류기의 신뢰도에 관한 연구

  • 배인수 (강원대학교 전기공학과) ;
  • 김성열 (한양대학교 대학원 전기공학과) ;
  • 김진오 (한양대학교 전기생체공학부)
  • Received : 2010.10.28
  • Accepted : 2010.11.30
  • Published : 2011.01.31
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Abstract

The failure of cooling system in Superconducting Fault Current Limiter(SFCL) increases the impedance of superconducting device, and due to malfunction of inner switches the SFCL opens the distribution system inadvertently when required to do so. In this paper, the ground fault and short circuit fault were classified as active failure and the open circuit fault was passive failure. A reliability model of SFCL considers the passive failure as well as active failure, and in the case study the reliability indices of distribution system are evaluated. It is possible that the reliability evaluation excluded passive failure makes the customers reliability seem so worse than it really was. Therefore, the reliability models of SFCL must include the active failure and passive failure together to evaluate the reliability of distribution system connected SFCL.

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References

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