kA class resistive fault current limiting device development using QMG HTC bulk superconductor

被引:16
作者
Ito, D [1 ]
Yang, C
Miura, O
Morita, M
Tokunaga, T
机构
[1] Tokyo Metropolitan Univ, Tokyo 158, Japan
[2] Nippon Steel Corp Ltd, Adv Technol Res Labs, Kawasaki, Kanagawa 211, Japan
关键词
D O I
10.1109/77.783543
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
kA class HTC bulk superconducting elements of devices for a resistive type fault current limiter for 6 kV distribution networks have been developed and tested The YBCO devices made with the quench melt growth method has 20,000 - 30,000 A/cm(2) critical current densities at 77 K and 1 T determined by the 1 mu V/cm criterion for the current flow parallel to the a-b plane. The QMG device has 5 Cin-m normal state resistivity and an n-value of approximately 6 for the same direction of current flow. An element of the device with a 1.5 x 1.5 mm(2) cross-section with silver electrodes formed by sputtering could successfully carry exceeding 2,200 A(peak) a.c. transport current in self field at 77 K.
引用
收藏
页码:1312 / 1315
页数:4
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