Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker
Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker
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DOI：
10.1109/tasc.2018.2793226
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发表时间：
2018-01
影响因子：
1.8
通讯作者：
X. Pei;O. Cwikowski;Alexander C. Smith;M. Barnes
中科院分区：
文献类型：
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作者：
X. Pei;O. Cwikowski;Alexander C. Smith;M. Barnes
直流（DC）断路器是多端高压直流（HVDC）系统故障管理的关键使能技术。直流故障隔离是具有挑战性的，由于故障电流的高上升率和缺乏自然电流过零发现交流系统。在本文中，我们提出了一种新的超导混合直流断路器，利用超导材料的固有特性。由于高故障电流导致的超导线圈的自动失超将电流从机械开关转移到半导体开关。因此，隔离机械开关能够在低电流下打开并快速恢复其介电能力。低压直流断路器原型已建成使用多股二硼化镁（MgB2）线圈，真空灭弧室，和绝缘栅双极晶体管模块。该样机成功地演示了中断500 A直流在4.4 ms内。本文介绍了超导混合断路器样机的设计和实验结果的详细分析。这种超导混合直流断路器在高压大电流应用中具有很大的潜力。
Direct current (DC) circuit breakers are a key enabling technology for fault management in multiterminal high-voltage DC (HVDC) systems. DC fault isolation is challenging due to the high rate of rise of the fault current and the lack of natural current zero-crossings found in ac systems. In this paper, we present a novel superconducting hybrid dc circuit breaker that utilizes the intrinsic characteristics of the superconductor material. The automatic quench of the superconductor coil as a result of a high fault current transfers the current from the mechanical switch to the semiconductor switch. The isolating mechanical switch is able therefore to open at low current and recover its dielectric capability rapidly. A low voltage DC circuit breaker prototype has been built using a multistrand magnesium diboride (MgB2) coil, a vacuum interrupter, and an insulated-gate bipolar transistor module. This prototype successfully demonstrated interruption of 500 A DC within 4.4 ms. This paper presents the design of the superconducting hybrid breaker prototype and a detailed analysis of the experimental results. This superconducting hybrid dc circuit breaker has significant potential for scaling up the high-voltage and high-current applications.