Accumulation of surface charges on the particle contaminated spacer surface in compressed gas under impulse voltage stress

被引:28
作者
Imano, AM [1 ]
机构
[1] Univ Stuttgart, Inst Power Transmiss & High Voltage Technol, D-7000 Stuttgart, Germany
关键词
surface charge; space charge; charge accumulation; partial discharges; streamer; sulphur hexafluoride; gas insulating systems; spacer;
D O I
10.1016/j.elstat.2003.11.003
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
In this paper, the influence of a conducting particle on the surface charging of a solid insulator during the stress with impulse voltages is investigated. The experimental study was carried out using a simplified spacer model with an adhering particle under homogeneous field conditions in SF6 gas and also in different gas mixtures. A specially designed set-up was used to bring about the surface charge data through potential measurement by means of an electrostatic probe. The results show that the particle position, the type of impulse voltage, the type of gas and the gas pressure all combine to explain the accumulation of charges on the spacer surface. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 19
页数:19
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