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中文摘要：
为给触发真空开关（TVS）在脉冲功率系统多级放电中的应用提供参考和设计依据，通过空载和通流两种触发实验研究了一种沿面击穿型的TVS，对比分析触发间隙电阻和触发电压两个参数变化规律的实验结果表明，在通流实验次数不多时存在触发间隙电阻增大、触发电压减小的趋势，原因在于沿面击穿型TVS工作过程中主间隙电流的作用远大于触发电流的作用，而主间隙电流的作用取决于大电流电弧以及金属蒸气沉积的效果。
英文摘要：
A surface breakdown type triggered vacuum switch （TVS） employing a ceramic dielectric coating with a semiconducting layer is studied. Two kinds of triggering experiments are performed with zero main gap current and with high main gap current respectively. During the two experiments, both the trigger gap surface resistance varia tion and the trigger voltage variation are compared and analyzed. The statistical analyses of the experimental results show that there exists a tendency of increasing the trigger gap resistance and decreasing the trigger voltage while the times of high main gap current experiments are limited. It is concluded that the role of the main gap current is much greater than that of the trigger current in the working process of the surface breakdown typed TVS. The role of the main gap current consists of the effects of the high current arc as well as its metal vapour deposit. The deposited high temperature metal granules not only influence the state of the surface semiconducting layer but also change the electric field distribution of the trigger gap. The study provides the reference and the design guidelines for the TVS application in the multi-stage discharges of pulsed power systems.
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