ELECTRICAL STRENGTH OF PAPER-OIL INSULATION SUBJECTED TO COMPOSITE VOLTAGES

被引：13
|
作者：
MOSINSKI, F
WODZINSKI, J
SIKORSKI, L
ZIENCIKIEWICZ, J
机构：
[1] High Voltage Department, Lodz Technical University
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 1994年 / 1卷 / 04期
关键词：
D O I：
10.1109/94.311704
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The results of a composite voltage, ac with lightning impulse (LI) tests of a paper-oil insulation model are presented. It was demonstrated that the presence of the background ac voltage leads to a decrease in LI breakdown voltage. This is particularly conspicuous at opposite polarities. The dispersion of LI breakdown voltages decrease save on the case, when the LI is superimposed on the opposite polarities. The dispersion of LI breakdown voltages decrease save on the case, when the LI is superimposed on the opposite polarity peak value of the ac sinusoid. In this critical case the combined breakdown voltage (ac + LI) may be even lower than the ac one.
引用
收藏
页码：615 / 623
页数：9
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