【摘要】 本文利用胶片电花图技术探讨了在冲击电压作用下水份对油一纸沿面放电的影响。实验结果表明:油中含水量高于15ppm时,随着水份增加,沿面放电流注增长。观察了同幅值不同波形冲击电压作用下的油一纸沿面放电,发现在一定条件下出现逆放电现象。更多还原

【Abstract】 This paper studied the effect of moisture on oil-pressboard surface discharge when impulse voltage was applied by using the photo-graphic Lichtenberg Figure Technique. It was proved that the length of streamer of surface discharge gets longer with the increase of moisture contained in oil, when the moisture-quantity was more than 15 ppm.The oil-pressboard surface discharges under impulse voltage of different wave shapes were observed.It was found that the phenomenon of the so-called "back discharge" occurred under certain conditions.更多还原