多间隙气体开关电晕均压结构优化  

Structural optimization of multi-gap gas switch with corona discharge for voltage balance

作　　者：姜占兴 赵光义[1] 张小强[1] 曾红凯 周林[1] 王真[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2017年第7期89-94,共6页High Power Laser and Particle Beams

摘　　要：电晕针均压的多间隙气体开关,其各间隙电晕电流一致性会直接影响开关的耐压稳定性。在工作气压0.1,0.2,0.3,0.4 MPa条件下,实验测量了六间隙气体开关在不同电压下的各间隙电晕电流。结果显示,针-板间隙电晕电流明显高于针-杆间隙电晕电流。对针-板间隙进行结构调整并进行三维静电场仿真。对调整结构后的针-板间隙进行电晕电流测试,测试数据的变化趋势与仿真结果相符。基于实验和仿真结果,优化了针-板间隙中电晕针的高度,充电25kV时,开关各间隙电晕电流的相对标准偏差最大为8%。The corona discharge effect was employed in the design of the multi-gap gas switch for voltage balance. The per- formance of the switch was determined by the consistency of the corona current in each gap. Aiming at optimizing the design of the 6-gap switch, corona current in each gap was experimentally investigated at gas pressure from 0. 1 to 0.4 MPa. The result shows that corona current in the pin-panel gap is significantly higher than that in the pin-rod gap. 3-D static-electric simulations were carried out, the results of which agree weU with that of the experiments. Based on the experiments and simutations, design of the multi-gap gas switch was improved, which achieved a relative standard deviation of corona current in each gap of 8% when charged to 25 kV.

关 键 词：直线型变压器驱动器 多间隙气体开关 电晕电流 仿真 

分 类 号：TM85[电气工程—高电压与绝缘技术]