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Study of Superconductor Recovery Time Characteristics and High-Speed Reclosing of Electromagnetic Repulsion Switch

机译：电磁斥力开关的超导体恢复时间特性和高速重合闸的研究

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摘要

Using a high-temperature superconductor, we constructed and tested a model super conducting fault current limiter (SFCL). The superconductor and a vacuum interrupter serving 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 interrupted. Using this equipment, the current flow time in the superconductor can easily be minimized. On the other hand, the fault current is also easily limited by the large reactance of the parallel coil. This system has many advantages. Thus, we introduced an electromagnetic repulsion switch. High-speed reclosing after interrupting the fault current in the electrical power system is essential. Thus, the SFCL should recover to the super conducting state before high-speed reclosing. But the superconductor generates heat at the time of quenching, and it takes time to recover to the super conducting state. Therefore, the recovery time is an issue. In this paper, we study the superconductor recovery time. We also propose an electromagnetic repulsion switch with a reclosing system.
机译：我们使用高温超导体构造并测试了模型超导故障电流限制器（SFCL）。使用旁路线圈将超导体和用作换向开关的真空断路器并联连接。当故障电流在该设备中流动时，超导体被淬火，由于超导体中的电压降，电流然后被传输到并联线圈。并联线圈中的大电流启动了真空灭弧室的磁斥力机制，超导体中的电流被中断。使用该设备，可以轻松地使超导体中的电流流动时间最小化。另一方面，并​​联线圈的大电抗也容易限制故障电流。该系统具有许多优点。因此，我们引入了电磁排斥开关。中断电力系统中的故障电流后的高速重合闸至关重要。因此，SFCL应该在高速重合闸之前恢复到超导状态。但是，超导体在淬火时会发热，恢复至超导状态需要时间。因此，恢复时间是一个问题。在本文中，我们研究了超导体的恢复时间。我们还提出了带有重合闸系统的电磁斥力开关。

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