Zhou Liming Qiu Yuchang. Effect of Space Charges on Positive Lightning Impulse Breakdowm Voltage in SF6[J]. High voltageapparatus, 1996, (2): 13-17.DOI:
空间电荷对SF6气体正雷电冲击击穿的作用
摘要
利用两种实验方法对比测试了预注入单极性空间电荷时
SF
6
气体极不均匀场间隙正雷电冲击击穿特性。分析表明;直流叠加冲击电压法不适用于观察空间电荷的作用
而切换直流/冲击电压法能有效地反映空间电荷对冲击击穿的作用。
Abstract
I Positive and negative polarity charges are respectively injected intoa highly non-uniform field gap in SF6 gas by pre-existing dc corona discharges. The results indicate that the total breakdown voltage does not directly reflect the space charge effect on impulse breakdown under combined dc and impulse conditions
whereas the relation between impulse breakdown voltage and dc bias voltage is avaiable for this study under alternative dc/impulse voltage.