轴向磁场分布对抗大电流真空电弧收缩影响的实验研究

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Plasma Science & Technology Pub Date : 2009-06-01 DOI:10.1088/1009-0630/11/3/08

Shi Zongqian, L. Zhigang, Jia Shenli, S. Xiaochuan, W. Lijun

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引用次数: 1

摘要

研究了轴向磁场(AMF)对抗大电流真空电弧收缩的影响。研究了两种典型的AMF分布，即传统的钟形AMF和鞍形AMF。实验在一个可拆卸的真空室中进行，平均电弧电流在10 kA至25 kA之间。弧柱由高速数码相机拍摄，曝光时间为2微秒。通过对两种不同场形下的电弧柱图像进行处理，并对电极附近的电弧柱尺寸进行数值计算，比较了真空电弧的收缩情况。同时也证实了AMF的分布对其抗电弧收缩的有效性有显著影响。此外，在抗电弧收缩方面，靠近电弧外围的电动力强度比电极中心的电动力强度影响更大。

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Experimental Investigation on the Influence of Axial Magnetic Field Distribution on Resisting the Constriction of a High-Current Vacuum Arc

Effect of the axial magnetic field (AMF) on resisting the constriction of a high-current vacuum arc is studied in this paper. Two typical AMF distributions were investigated, i.e., the traditional bell-shaped AMF, and the saddle-shaped AMF. Experiments were conducted in a detachable vacuum chamber with a rms arc current in the range of 10 kA to 25 kA. The arc column was photographed by a high-speed digital camera with an exposure time of 2 microseconds. The constriction of the vacuum arc was compared by processing the images of the arc column under the two different field configurations and numerically determining the dimensions of the arc column near the electrodes. It was also confirmed that the AMF distribution had a significant influence on its effectiveness in resisting arc constriction. Furthermore, the AMF strength near the periphery of the arc is more influential than that at the centre of the electrodes in resisting arc constriction.

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来源期刊

Plasma Science & Technology 物理-物理：流体与等离子体

CiteScore

3.10

自引率

11.80%

发文量

3773

审稿时长

3.8 months

期刊介绍： PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.