Effects of negative direct voltage pre-stressing on the breakdown of conductor-rod gaps under positive impulse voltages

被引：5

作者：

Allen, NL

Gourgoulis, DE

Mikropoulos, PN

Stassinopoulos, CA

Yakinthos, CG

机构：

[1] Univ Manchester, Inst Sci & Technol, Dept Elect Engn & Elect, High Voltage Lab, Manchester M60 1QD, Lancs, England

[2] Aristotelian Univ Salonika, Dept Elect & Comp Engn, High Voltage Lab, GR-54006 Thessalonika, Macedonia, Greece

来源：

IEE PROCEEDINGS-SCIENCE MEASUREMENT AND TECHNOLOGY | 1998年 / 145卷 / 03期

关键词：

conductor-rod gaps; impulse voltage; direct voltage pre-stress; gap geometry; 50% breakdown voltage; humidity; spark paths;

D O I：

10.1049/ip-smt:19981964

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 sparkover of a 50 cm conductor-rod gap under positive impulses is investigated when a pre-stressing negative direct voltage is applied to the rod. Under lightning impulses the pre-stress has a small effect on the breakdown voltage of the gap. For long-front impulses, a considerable increase in the dielectric strength of the gap can be observed. Several parameters affect this behaviour, like the value of the prestressing direct voltage, the diameter of the energised conductor, the position of the rod with regard to the conductor and the waveshape of the applied impulse.

引用

页码：105 / 109

页数：5