The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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Operating Properties for a Resistive SFCL of YBCO Thin Films

YBCO 박막의 저항형 초전도 한류기에 대한 동작 특성

  • 최효상 (한국전력공사 전력연구원 전력계통연구실) ;
  • 현옥배 (한국전력공사 전력연구원 전력계통연구실) ;
  • 김혜림 (한국전력공사 전력연구원 전력계통연구실) ;
  • 황시돌 (한국전력공사 전력연구원 전력계통연구실) ;
  • 김상준 (한국전력공사 전력연구원 전력계통연구실) ;
  • 문승현 (LG 종합기술원) ;
  • 한병성 (전북대학교 전기공학과)
  • Published : 1999.10.01
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Abstract

We fabricated a resistive superconducting fault current limiter (SFCL) of a meander type based on a YBCO film with the meander cross section of 5 $\times$ $10^{-6}$$cm^2$, and performed current limitation experiments. The film was coated quench current was 9.6 Apeak at 60 Hz, and the fast quench time was 0.63 msec. The resistance of the limiter continuously increased for three cycles dut to the temperature rise in the gold layer. The temperature of the current limiting element reached the room temperature in 11 msec, $150^{\circ}C$ in 54 msec after quench, and was saturated afterwards. For $45^{\circ}$and $90^{\circ}$faults the fast quench times were 0.56 msec and 0.26 msec, respectively. The quench time is believed to be reduced because the fault occurred when the current was either increasing or at the peak value. This limiter effectively limited the fault current to about 1/5 of the potential current with no SFCL right after the fault and to about 1/8.5 in three cycles. We confirmed that the gold layer effectively carried out the role of heat dissipation as the SFCL was quenched.

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References

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