在PTS单路样机上进行了4 MV水介质同轴-三平板型水介质自击穿开关实验研究, 开关由3个线性排列的球-板结构的电极间隙构成。根据PTS单路样机部件组成及其结构, 建立了单路样机Pspice全电路模型及开关等效电路。给出了开关在自击穿电压3.3 MV和2.9 MV状态下的电路模拟与实验对比, 模拟结果与实验结果一致。实验及模拟结果表明, 装置和开关模型与参数选取及设置合理, 水介质自击穿开关的参数与实际值相近。

A 4 MV coax-to-triplate multi-channel water dielectric self-breaking switch designed for oil and water section of PTS, the high power pulse device and primary test stand, is investigated on the prototype module of PTS. The switch contains three linear array self-breaking gaps and supporting hardware. The equivalent electric circuits of the prototype module of PTS and the switch are modeled based on the configurations of compositive parts. The results of experiments and simulations are compared at 2.9 MV and 3.3 MV break voltage of the switch. It is indicated that the simulative results agree with that of experiments well. It is important that the parameters of the equivalent electric circuits of the prototype module of PTS and the switch are selected reasonably. The Parameters approach to the actual values well.