研究了固体绝缘表面电荷对不均匀电场直流电晕起始电压、伏安特性的影响。
The effect of insulator surface charges on DC corona initial voltage and V-I characteristic in non-uniform field is studied.
文中通过实验测量和模拟计算，得到了不同气压湿度下的正直流电晕起始电压和电晕离子电流。
It was obtained through experiment and simulation that positive DC corona inception voltage and corona ion current under different air pressure and humidity conditions.
在较大分子的气体（如SF_6）中，正、负电晕起始电压有明显差别，而且随着气体压强增加而增大。
The results show that in SF6 there is obvious difference between the positive and negative onset voltage and the difference is increased by an increase of gas pressure.
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