Positive streamer propagation in large oil gaps - Experimental characterization of propagation modes

被引：180

作者：

Lesaint, O ^{[1
]}

Massala, G ^{[1
]}

机构：

[1] CNRS,UJF, LEMD, Grenoble, France

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 1998年 / 5卷 / 03期

关键词：

D O I：

10.1109/94.689425

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：

This paper presents an experimental study of positive streamer propagation in mineral oil, in large point-plane gaps under impulse voltage. A systematic investigation was done concerning the influence of gap distance (less than or equal to 35 cm), and voltage from streamer inception up to large overvoltages. The measurements presented concern breakdown voltage measurements, time to breakdown, visualization of streamers (streak and still photographs), electrical measurements (transient current, charge), light emission intensity. Streamers are characterized and then classified into different modes (2nd, 3rd and 4th modes) according to their propagation velocities up to more than 100 km/s. According to the applied voltage, transitions between modes are observed, and correlations are established between charge, shape, and streamer velocity. The physical mechanisms as well as practical consequences are then discussed.

引用

页码：360 / 370

页数：11

共 28 条

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