Development and Testing of a 10-kA Hybrid Mechanical–Static DC Circuit Breaker
Development and Testing of a 10-kA Hybrid Mechanical–Static DC Circuit Breaker
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DOI：
10.1109/tasc.2011.2169411
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发表时间：
2011-10
影响因子：
1.8
通讯作者：
L. Novello;Fabio Baldo;A. Ferro;A. Maistrello;E. Gaio
中科院分区：
文献类型：
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作者：
L. Novello;Fabio Baldo;A. Ferro;A. Maistrello;E. Gaio
本文介绍了一种基于机械开关并联静态断路器的超导磁体失电保护机械-静态混合型直流断路器样机的研制和试验。在正常操作时，机械开关闭合，它处理直流电流的连续流动，最大限度地减少导通状态损失。在干预的情况下，机械开关打开，将电流换向静态CB，该CB迅速中断并将电流转移到放电电阻中，承受重新施加的电压。本文的目的是面对和解决该设计方案在具有显著功率等级的同类应用实例中没有的一些问题。混合型CB的运行测试已成功地达到10ka的电流，恢复电压约为1kv。专门进行了试验，以表征从机械开关到静态断路器的电流换相的可靠性和可重复性，并表征不同条件下的电弧电压。
This paper presents the development and testing of the prototype of a hybrid mechanical-static dc circuit breaker (CB) for quench protection of superconducting magnets based on a mechanical switch paralleled to a static CB. In normal operation, the mechanical switch is closed and it handles the continuous flow of dc current, minimizing the on-state losses. In case of intervention, the mechanical switch opens, commutating the current into the static CB that quickly interrupts and transfers the current into a discharge resistor, withstanding the reapplied voltage. This paper was carried out to face and solve some issues of this design solution being not available in the literature examples of similar applications rated for significant power levels. The operation of the hybrid CB has been successfully tested up to a current of 10 kA with a recovery voltage of about 1 kV. Special tests have been dedicated to characterize the reliability and the repeatability of the current commutation from the mechanical switch to the static CB and to characterize the arc voltage under different conditions.