The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Dependence of External Magnetic Field in the Matrix-Type SFCL with the Separated or the Integrated Reactors

분리형과 일체형 리액터에 따른 매트릭스형 초전도 한류기의 외부자장 의존성 연구

  • 조용선 (조선대 공대 전기공학과) ;
  • 최효상 (조선대 공대 전기공학과) ;
  • 정병익 (조선대 공대 전기공학과) ;
  • 고성필 (한국폴리텍Ⅰ대학 제주캠퍼스 신재생에너지학과)
  • Received : 2011.01.25
  • Accepted : 2011.03.02
  • Published : 2011.04.01
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Abstract

The matrix-type superconducting fault current limiter (MSFCL) consists of the trigger and current-limiting parts. The trigger part with reactors connected in parallel improves the quenching characteristics by applying the external magnetic field into the superconducting units. The current-limiting part with superconducting units connected in parallel and shunt reactors connected in series limit the fault current when the fault occurs. We developed the integrated reactor with the trigger and the current-limiting parts to apply high external magnetic field into the superconducting units. This was composed of a superconducting unit for the trigger part and two superconducting units for the current-limiting parts. We confirmed that the external magnetic field generated in the MSFCL with an integrated reactor was larger than that of the MSFCL with the separated reactors. So the differences of voltages generated between superconducting units were decreased in the difference according to the increment of the applied voltage. The whole magnitude of the SFCL was reduced because the volume of an integrated reactor could be reduced by one-third than that of the separated reactors. We confirmed that the critical behavior between the superconducting units in the MSFCL with an integrated reactor was more improved than that of the MSFCL with the separated reactors.

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References

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