1 MV紧凑型重频Marx发生器绝缘设计和数值分析
Electrical insulation design and numerical simulation analysis of 1 MV compact repetitive Marx generator
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摘要: 通过分析六氟化硫气体在静态高电压和脉冲高电压作用下的绝缘特性对Marx模块式开关结构和外筒尺寸进行了优化设计，着重优化设计了Marx发生器中的两个关键绝缘部位——开关腔体结构和外金属筒与顶部电容绝缘距离，并通过数值模拟计算，分析了该区域的局部3维电场强度分布。结果表明:最大场强均小于六氟化硫的沿面闪络和电击穿场强阈值。对模块式开关腔和外筒尺寸进行优化得到的绝缘结构满足0.3 MPa下六氟化硫的绝缘要求。Abstract: An electrical insulation optimum design and electric-field numerical simulation of a 1MV compact repetitive Marx generator filled with sulfur hexafluoride gas was performed. Two critical insulating regions in Marx generator, modular switch cavity and outer shell were well-designed with compact dimension base on the analysis of sulfur hexafluoride insulating property in static and pulse high-voltage environment, 3D electric-field numerical simulation results of the interested regions indicate that the current design meets the insulating requests of Sulfur hexafluoride at 0.3 MPa.
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