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25 kV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 performance 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 well with that of the experiments. Based on the experiments and simulations, 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.