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中文摘要：
真空电弧形态的研究对真空开关能否有效控制和保护电路有着重要的影响。本文设计了真空开关电弧实验系统,建立了基于高速摄像设备CMOS的真空开关电弧采集系统。通过该采集系统可以每秒200,000帧采集速度得到了真空开关电弧图像。实验结果表明,真空开关电弧起始处于扩散形态,随着电流的增大,电弧月逐渐集聚,并产生阳极斑点,峰值电流过后再次转变成扩散形态,最终在阴极表面形成很多阴极斑点,做高速运动并数量不断减少至电弧完全熄灭。
英文摘要：
The forms of vacuum switching arc have great influence on the vacuum circuit breakers＇ protection and control of power system. An experimental setup was thus designed for vacuum switching arc and an image collection system was designed to collect the images of vacuum arc using high-speed camera CMOS with the systems the images could be successfully collected at the speed of 200,000fps. The result shows that vacuum arc is initially in diffused form and then with the increasing arc current it turns into constricted form with anode spots produced on the surface of anode contact. After the peak current, it turns into diffused form again. Many cathode spots are finally kept to move at high speed and discrease continuously down to full extinction.
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