Electrode Conditioning Mechanism Based on Pre-breakdown Current under Non-uniform Electric Field in Vacuum

被引：0

作者：

Okubo, Hitoshi ^{[1
]}

Yasuoka, Takanori ^{[1
]}

Kato, Tomohiro ^{[1
]}

Kato, Katsumi ^{[1
]}

机构：

[1] Nagoya Univ, Nagoya, Aichi 4648601, Japan

来源：

ISDEIV 2008: PROCEEDINGS OF THE XXIIIRD INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM, VOLS 1 AND 2 | 2008年

关键词：

D O I：

10.1109/DEIV.2008.4676705

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：

Electrode conditioning in vacuum is very important technique for improvement of the insulation performance of vacuum circuit breakers (VCBs). This paper discusses the spark conditioning mechanism through the measurement and analysis of the pre-breakdown current under non-uniform field. From F-N plots, we made sure that the pre-breakdown current was based on field emission mechanism. We quantitatively evaluated the variation of pre-breakdown current in the conditioning process. As a result, field enhancement factor beta decreased as the conditioning proceeded and reached the final value. In addition, in case of non-uniform field, we found that p on rod electrode surface after conditioning was distributed according to the electric field distribution on the surface.

引用

页码：13 / 16

页数：4

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