Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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An experimental study on the fast quench Phenomenon of superconducting cable

초전도연선의 fast quench애 관한 실험적 고찰

  • Lee, Sang-Jin (Dept. of Electrical Engineering, Yonsei University) ;
  • Oh, Yun-Sang (Dept. of Electrical Engineering, Yonsei University) ;
  • Bae, Joon-Han (Dept. of Electrical Engineering, Yonsei University) ;
  • Ko, Tae-Kuk (Dept. of Electrical Engineering, Yonsei University)
  • Published : 1995.07.20
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Abstract

A superconducting parallel bifilar winding with one strand in each branch was tested and analyzed. When the superconducting parallel bifilar winding was quenched by fault current, it showed the so-called 'fast quench' and the results of experiment well explained the resistance curve. Also the experiments confirm that the current redistribution of magnetically coupled strands develops new normal zones after the initial quench, and that the size of normal zones at an early stage increases almost linearly as dI/dt increases. By these results, we could explain the resistance rise of superconducting parallel bifilar winding when it is quenched by the current above the critical value.

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