SF_6混合气体负离子稳定性对冲击击穿机理的影响

Influence of Stability of the Negative Ions in SF_6 Mixtures on Impulse Breakdown Mechanisms

在利用辅助电极的负直流电晕放电向枫不均匀场间隙注入负离子电荷条件下,测试了SF_6及其混合气体的正雷电冲击击穿电压。依据实验结果,分析了SF_6混合气体负离子的稳定性对冲击击穿机理的影响。

When the negative ions are injected into a highly non-uniform field gap by means of the auxiliary needle electrodes,to which the negative dc voltage is applied,the positive lightning impluse breakdown voltages are measured in SF6 and its mixtures. Based on the experimental results the influence of the stability of the negative ions on the impulse breakdown mechanism is analysed.