Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Operational Characteristics of SFCL using Magnetic Coupling of Coils

코일의 자기결합을 이용한 초전도 사고전류제한기의 동작특성

  • Lim, Sung-Hun (School of Electrical Engineering, Soongsil University) ;
  • Kim, Jae-Chul (School of Electrical Engineering, Soongsil University)
  • Published : 2007.04.19
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Abstract

The operational characteristics of superconducting fault current limiter (SFCL) using magnetic coupling of coils were investigated. This SFCL consists of a high-Tc superconducting (HTSC) element and two coils with series or parallel connection on the same iron. This SFCL has the merit that the operational current of SFCL can be increased higher than the critical current of the superconducting element by adjusting the inductance ratio between two coils. To confirm its operation, the circuit for the fault simulation was constructed. From the measured voltage and current of the SFCL, it was confirmed that the resistance of HTSC element comprising this SFCL increased more than that of HTSC element's independent operation.

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