Interaction Mechanism Between Copper-impregnated Carbon Materials and Arc

被引：0
|
作者：
Shi Y., Sr. [1 ]
Zhou Y. [2 ]
Gao G. [3 ]
Wei W. [3 ]
Yang Z. [3 ]
Guo Y. [3 ]
机构：
[1] State Grid Sichuan Electric Power Company, Chengdu
[2] State Grid Zhejiang Yuyao Electric Power Company, Yuyao
[3] College of Electrical Engineering, Southwest Jiaotong University, Chengdu
来源：
Gaodianya Jishu/High Voltage Engineering | 2018年 / 44卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Arc; Copper-impregnated carbon materials; Emission spectrum; Interaction mechanism; Microcosmic morphology; Phase analysis;
D O I：
10.13336/j.1003-6520.hve.20181126013
中图分类号：
学科分类号：
摘要：
The wear of metal impregnation carbon material will be more severe when subjected to arc erosion. Consequently, we experimentally investigated the arc erosion by using copper-impregnated carbon materials and copper electrode, and clarified the interaction mechanism between copper-impregnated carbon materials and arc. Moreover, we analyzed the breaking arc combustion process and the effect of copper-impregnated carbon materials, and discussed the influences of arc erosion on the macroscopic and microscopic appearances as well as phases of copper-impregnated carbon materials. The research results show that the copper phase in copper-impregnated carbon materials can provide high-temperature metal vapor for the ignition and stable combustion process of arc, and the size and distribution of copper phase will affect the movement of arc root. Besides, the arc affected zone can be divided into two parts according to the main reaction. One is the arc erosion region, the other is heat affected region, which results from the arc-induced temperature gradient on the cathode surface. With the movement of arc root, the droplet ejection will occur, which will cause the loss, transformation and redistribution of copper phase of copper-impregnated carbon materials surface. This research work will be helpful for finding effective measures to decrease the erosion degree of copper-impregnated carbon materials and prolong its service life. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：3872 / 3879
页数：7
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