Study of a SFCL Equipped with a Vacuum Interrupter Driven by Electromagnetic Repulsion Force for High-voltage SFCLs

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  • 電磁反発式遮断器を搭載した超電導限流器とその大型化への検討
  • デンジ ハンパツシキ シャダンキ オ トウサイシタ チョウデンドウ ゲンリュウキ ト ソノ オオガタカ エノ ケントウ

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Abstract

Using a high-temperature superconductor, we constructed and tested a model superconducting fault current limiter (SFCL). The superconductor and vacuum interrupter as the commutation switch were connected in parallel using a bypass coil. When the fault current flows in this equipment, the superconductor is quenched and the current is then transferred to the parallel coil due to the voltage drop in the superconductor. This large current in the parallel coil actuates the magnetic repulsion mechanism of the vacuum interrupter and the current in the superconductor is broken. Using this equipment, the current flow time in the superconductor can be easily minimized. On the other hand, the fault current is also easily limited by large reactance of the parallel coil. In this paper, we describe the current limiting module using four serial and two parallel-connected YBCO thin films.

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