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Studies of Simultaneous Quench of Superconducting YBCO Flims for Fault Current Limiter Under the Influence of Magnetic Fields  

박권배 (LG산전 전력연구소 연구원)
이방욱 (LG산전 전력연구소)
강종성 (LG산전 전력연구소)
오일성 (LG산전 전력연구소 책임연구원)
최효상 (한전 전력연구원)
현옥배 (한전 전력연구원 책임연구원)
Publication Information
Progress in Superconductivity and Cryogenics / v.4, no.1, 2002 , pp. 84-88 More about this Journal
Abstract
The resistive fault current limiter (SFCL) is a very attractive device for power networks. But it has a serious Problem in using YBCO films for fault current limiter is inhomogeneities caused by imperpect manufacturing. So simultaneous quenches are a difficult problem which elements for current limiting are connected in series for increasing voltage ratings. We investigated extended electric field-current characteristics for current limiting element of YBCO film when O-130mT magnetic field is applied. And quench characteristics were investigated in over all element and between elements of YBCO films. From the experiments, it was shown that applied magnetic fields using solenoid coil induced uniform quench distribution for over all stripes and simultaneous quench in all elements for current limiting of YBCO film was realized. We have achieved resistive fault current limiter of 1.2kV/20A rating using magnetic field.
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  • Reference
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