多级串联LTD中开关自放电故障耦合特性实验

Coupling characteristics experiment of switch prefire in multi-stage linear transformer driver

基于50级模块串联的LTD单路样机,开展了开关自放电故障耦合影响实验,获得了开路和短路负载下、不同位置LTD模块内单只开关自放电对其余LTD模块的电压耦合影响规律。结果表明,两种负载条件下,LTD模块内单只开关自放电时在其余模块内耦合的电压幅度均较低,且LTD距离越远电压幅度越低。在±83 kV的单只开关自放电电压下其相邻模块内耦合的最大电压幅度约2.43 kV(对应电压波动约3%)。

The influences of switch prefire in different LTD cavities on the other cavities with shorted or open load have been researched based on the 50 stages linear transformer driver module.It is shown that the induced voltage in the other cavities is very low,and the amplitude of voltage signal will decrease with increase of distance.The maximal induced voltage is 2.43 kV when switch prefire occurred in neighbouring cavity at voltage of±83 kV.The results will contribute to reliability model constructing,analysis and assessment of large scale LTD generator.