Dielectric recovery in a high-voltage circuit breaker in SF6

被引：33
|
作者：
Seeger, M. [1 ]
Schwinne, M. [1 ]
Bini, R. [1 ]
Mahdizadeh, N. [1 ]
Votteler, T. [1 ]
机构：
[1] ABB Switzerland Ltd, Corp Res, CH-5405 Baden, Switzerland
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2012年 / 45卷 / 39期
关键词：
CURRENT ZERO; HOT SF6; BREAKDOWN; ARC;
D O I：
10.1088/0022-3727/45/39/395204
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The dielectric recovery in high-voltage circuit breakers after interruption of high-current amplitudes was investigated experimentally in a test device. Various current amplitudes were tested, which cover a typical range of practical interest. Simulations with computational fluid dynamics together with electric field simulations allowed one to deduce the physical parameters in the region where the breakdown was decided. A leader inception model using these parameters explains under which condition leader inception occurs; causing breakdown of the gap. Based on this model scaling laws for leader inception are given.
引用
收藏
页数：12
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