A Fast Mechanical Switch for Medium-Voltage Hybrid DC and AC Circuit Breakers
作者： Chang Peng , Iqbal Husain , Alex Q Huang , Bruno Lequesne , Roger Briggs
关键词: Electronic engineering 、 Disconnector 、 Capacitor 、 Fuse (electrical) 、 Prospective short circuit current 、 Engineering 、 Circuit breaker 、 Electrical engineering 、 Transient recovery voltage 、 Short circuit 、 Distribution board
摘要: This paper presents the design and experimental results of a Thomson coil-based fast mechanical switch for hybrid ac dc circuit breakers rated at 30-kV voltage 630-A current. The compact with optimized parameters geometric dimensions components targets 2-mm travel within 1 ms when driven by 2-mF capacitor bank precharged to 500 V. use disc spring as damping holding mechanism is presented. Structural complete assembly rather than just actuator given. Experimental show that can 1.3 mm in first 3.1 mm 2 ms 360-V bank. Such switches facilitate breaker interruptions 2 or 3 ms ultra-fast highly efficient protections 5–35 kV medium-voltage well systems.
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