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NTIS 바로가기IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee, v.15 no.2 pt.2, 2005년, pp.1835 - 1838
Lue, J.W. (Oak Ridge Nat. Lab., TN, USA) , Gouge, M.J. , Duckworth, R.C.
High-temperature superconducting (HTS) transmission cables are subjected to short-circuit fault currents 10 to 30 times the normal operating current and lasting up to 15 cycles. These over-currents will drive the HTS conductor normal and generate heat during the fault. A concern is whether the fault current will either electromechanically or thermally damage the HTS conductor and degrade it or burn-out the tape altogether. Electromechanical and thermal limitations of over-current pulses were measured on BSCCO and YBCO tapes in a liquid nitrogen bath. With pulse lengths as short as 35 ms, it is found that single BSCCO and YBCO tapes can be pulsed to at least 1 to 1.2 kA without being damaged electromechanically. Longer pulses at moderate (450-750 A) over-currents indicated that HTS tapes can be heated transiently to over 400 K without suffering degradation. Thus, it is likely that other considerations of the cable rather than the HTS tape itself would set the limit for short-circuit fault protection.
Lue, J.W., Barber, G.C., Demko, J.A., Gouge, M.J., Stovall, J.P., Hughey, R.L., Sinha, U.K.. Fault current tests of a 5-m HTS cable. IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee, vol.11, no.1, 1785-1788.
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