Single Partial Discharge in Nonuniform Electric Field for Different Polymer Dielectrics

被引:0
|
作者
Emelyanov, Oleg [1 ]
Kliuiko, Pavel [1 ]
Shemet, Mikhail [1 ]
机构
[1] Peter Great St Petersburg Polytech Univ, Dept High Voltage Engn Elect Insulat & Cable Tech, St Petersburg, Russia
关键词
partial discharge; surface charge; polymer; dielectric barrier discharge; nonuniform electric field; AIR; TRANSITION; MECHANISM; SPARK;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The first single partial discharges under ramp voltage are investigated in submillimetric air gaps and nonuniform field. Several polymer films with different thicknesses are used as a dielectric barrier: 12- and 100-mu m polyethylene terephthalate films, 28-mu m polyimide film, 6- and 12-mu m polypropylene films. The inception voltage (breakdown voltage) and the discharge current are registered. The parameters of the accumulated surface charges measured by a rotating capacitive probe are presented. The surface charge patterns obtained by means of the dust figure method are shown. Probable mechanisms of the discharge development are discussed.
引用
收藏
页码:1171 / 1174
页数:4
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