轴向磁场抽真空电弧点火方式研究

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI:10.1109/DEIV.2016.7748715

D. Feng, S. Xiu, Yi Wang, Ting Wang, Zixi Liu

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引用次数: 2

摘要

在抽真空电弧中，电弧柱将在熔融金属桥破裂后形成。初始电弧将对随后的电弧过程产生重大影响。本文利用峰值电流高达25kA的可拆卸真空室，对抽真空电弧的引弧方式进行了实验研究。对轴向磁场(AMF)进行了研究，并与已有的横向磁场(TMF)接触进行了比较。利用高速电荷耦合器件(CCD)摄像机，观察了带AMF触点的电弧的多点引弧模式。研究了电弧点火方式与初始电弧过渡阶段的关系，以及电弧点火方式对后续电弧过程的影响。研究发现，电弧点火方式对有TMF触点的电弧的影响更为明显，对电弧的旋转有一定的影响。对于带AMF触点的电弧，电弧点火方式主要影响初始电弧膨胀过程。

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Investigation of arc ignition modes for drawn vacuum arc with axial magnetic field (AMF)

In a drawn vacuum arc, the arc column would form just after the rupture of the molten metal bridge. The initial arc would have a significant influence on the subsequent arcing process. In this paper, arc ignition modes for drawn vacuum arc were investigated experimentally by using a demountable vacuum chamber with peak currents up to 25kA. Axial Magnetic Field (AMF) was studied and compared with our previous research for Transverse Magnetic Field (TMF) contacts. By using a high-speed charge-coupled device (CCD) video camera, multiple-point arc ignition (MPAI) mode was observed for arc with AMF contacts. The relationship between arc ignition mode and the initial arc transition stage was studied, and the influence of arc ignition modes on the following arcing process was also investigated. It was found that the impact of arc ignition modes was more obvious for arc with TMF contacts, which would affect the arc rotation to some degree. For arc with AMF contacts, the arc ignition mode would mainly affect the initial arc expansion process.

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来源期刊

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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