同轴-三平板型水介质自击穿开关设计
Design of 4 MV coaxial-triplate water pulse forming line switch
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摘要: 在1 MV水介质自击穿开关降压实验的基础上，设计了用于脉冲功率装置的水介质输出开关，设计的最高运行电压为4 MV，放电电流600 kA。4 MW水介质自击穿开关为同轴-三平板结构，由输入输出电极、预脉冲屏蔽板和连接部件组成。在结构设计中拟使用电流线圈测量每个通道的放电电流，用开关前后传输线上靠近开关端的D-dot测量开关的输入输出电压。对开关间隙进行了2维和3维静电场分析，结果发现二者差别较大，3维静电场分析应该更接近实际电场分布。Abstract: A 4 MV water pulse forming line switch that would be used in a water pulse forming line machine was designed based on the experiments of the 1 MV water self-breaking switch. The designed breakdown voltage is 4 MV with a current about 600 kA. The water self-breaking switch is made up of electrodes, a prepulse suppression plane and joint parts. The water switch is at the joint of pulse forming line and water insulated tri-plate transmission line. The gaps of the switch are arrayed at the input section of the tri-plate transmission line linearly. The discharge current of each gap will be tested by Rogowski coil while the input and output voltages of the switch by D-dot probes. Present 2 D and 3 D models of the electrostatic field analysis are useful tools for the design. There are many differ
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Key words:
- pulse forming line switch /
- deionized water /
- prepulse
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