快速故障限流器中爆炸电弧抑制的数值模拟

K. Niayesh, J. Jadidian, E. Hashemi, E. Agheb, A.A. Shaygani-Akmal
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引用次数: 0

摘要

对由两根平行半管状导线(爆破桥)组成的爆炸电流灭流系统的物理特性进行了数值模拟。采用磁流体力学方法,结合膨胀电极的详细爆炸方程,描述了爆炸电弧抑制的行为。爆破桥传导50Hz大电流(最大200kA),充满高爆药。跳闸后,炸药被引爆,爆炸管状导体(爆破桥),分离电极,以极快的方式抑制等离子体流动。这种结构最近被用作具有很高短路电流水平的配电网络中的快速限流器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical simulations of explosive arc suppression used in fast fault current limiters
Numerical simulations are presented for physical behavior of the explosive current interrupter system consisting of two parallel half tube-shaped conductors (bursting bridge). The magnetohydrodynamic approach, together with the detailed explosion equations for the expanding electrodes, is used to describe the behavior of explosive arc suppression. Bursting bridge conduct a 50Hz high current (up to 200kA) filled with high explosive charge. After tripping, the explosive charge is detonated, explodes the tube-shaped conductors (bursting bridge), separates the electrodes and suppresses the plasma flow in an extremely fast manner. Such configuration has been used recently as a fast current limiter in electrical distribution networks with very high short circuit current levels.
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