为提高绝缘子的真空沿面闪络电压, 采用氩气下辉光放电对绝缘子进行处理, 研究了辉光放电频率、放电电流大小和处理时间对绝缘子真空闪络电压的影响。结果表明, 辉光放电能极大提高绝缘子的真空闪络电压。未处理的绝缘子真空闪络电压为55 kV左右; 经高频辉光放电预处理40 min后, 绝缘子真空闪络电压达到100 kV; 经工频辉光放电预处理40 min后, 绝缘子真空闪络电压可达125 kV, 高出高频下25 kV; 同时, 辉光放电电流(数十mA)越大, 处理后的绝缘子真空闪络电压越高, 但随着辉光放电电流的增大, 闪络电压的增加幅度趋于饱和。

The effects of glow discharge frequency, current magnitude and treatment time are studied by using glow discharge to treat the insulator in order to improve the flashover voltage of insulator in vacuum. Experiment results show that the flashover voltage of insulator could be greatly improved through glow discharge pre-treatment. The flashover voltage of unconditioned insulator is 55 kV. After treating for 40 min by high frequency glow discharge, the saturated flashover voltage becomes 100 kV. After treating for 40 min by AC glow discharge, the flashover voltage reaches to 125 kV, which is 25 kV higher than that of high frequency glow discharge. Meanwhile, the larger the current is, the higher the saturated flashover voltage will be. However, as the current gets larger, the growth of flashover voltage saturates gradually.