The Transactions of the Korean Institute of Electrical Engineers A (대한전기학회논문지:전력기술부문A)

The Korean Institute of Electrical Engineers (대한전기학회)
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Characteristics of Hybrid-Type SFCL by the Number of Secondary Windings with YBCO Films

2차회로의 수에 따른 하이브리드형 초전도 한류기의 동작 특성

  • 조용선 (조선대 공대 전기공학과) ;
  • 최효상 (조선대 공대 전기공학과) ;
  • 박형민 (조선대 공대 전기공학과)
  • Published : 2006.02.01
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Abstract

We investigated the characteristics of the hybrid-type superconducting fault current limiter (SFCL) by the number of secondary windings. The SFCL consists of a transformer, which has a primary winding and several secondary windings with serially connected $YB_{a2}Cu_{3}O_{7}$ films. In order to increase the capacity. of the SFCL, the serial connection between each current limiting unit is necessary. Resistive-type SFCL has a difficulty in quenching simultaneously between the units due to slight differences of their critical current densities. The hybrid-type SFCL could achieve the simultaneous quenching through the electrical isolation and the mutual flux linkage among the units. We confirmed that the capacity of the SFCL could be increased effectively through the simultaneous quenching among the units. In addition, the power burden of the system could be reduced by adjusting the number of secondary windings. We will investigate the method to increase the capacity through serial and Parallel connections among current limiting units.

Keywords

References

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