触发电流对真空触发开关导通特性影响的实验

Experiment on Influence of Trigger Current on Conduction Characteristics of Triggered Vacuum Switches

基于真空触发开关的导通机理,设计真空触发开关导通特性的实验研究方案。在详细分析真空触发开关导通过程的基础上,利用不同参数的触发电流导通真空间隙来研究对真空间隙导通过程的影响规律:在相同主间隙电压下,导通所需的触发电荷量随着导通时间的增长而在一定小范围内随之增长,而导通延时又随着触发电流的电流增长率和峰值增大而减小。再通过对导通过程影响规律的深入分析,得到了真空间隙的导通条件。即在主间隙电压为定值时,真空间隙导通所需的触发电荷量要近似满足一定关系。

Based on the conduction mechanism of triggered vacuum switch,an experimental scheme was designed to study the conduction characteristics of triggered vacuum switch.Based on the detailed analysis of conduction process of triggered vacuum switch,trigger currents with different characteristics were used to conduct triggered vacuum switch in order to study the factors affecting conduction process.With the same main gap voltage,triggering charge quantity increased with increasing time delay,while the time delay decreased with increasing current growth rate and peak value of trigger current.Through the analysis of factors affecting conduction process,conduction condition was obtained,that is,when the main gap voltage is fixed,the required triggering charge quantity to switching-on the TVS should approximately satisfy a certain relationship.