Influence of Interface Oxidation on the Electrical Contact Properties of C-Cu Contact Pairs

被引：0

作者：

Gao G. ^{[1
]}

Wang Q. ^{[1
]}

He Z. ^{[2
]}

Xiao S. ^{[1
]}

Wang H. ^{[1
]}

Qian P. ^{[1
]}

Peng W. ^{[1
]}

Wu G. ^{[1
]}

机构：

[1] School of Electrical Engineering, Southwest Jiaotong University, Sichuan Province, Chengdu

[2] China Energy Engineering Group Anhui Electric Power Design Institute, Co., Ltd., Anhui Province, Hefei

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 21期

基金：

中国国家自然科学基金;

关键词：

C/Cu contact pairs; current-carrying friction and wear; electrical contact characteristics; interfacial oxidation;

D O I：

10.13334/j.0258-8013.pcsee.221877

中图分类号：

学科分类号：

摘要：

Pantograph catenary system sliding electrical contact is the only way for train energy transmission. And the oxidation degree of contact interface has an obvious effect on the current carrying friction and wear of C/Cu contact pairs. This paper designs a linear reciprocating current carrying friction test bench and presents a method to simulate different oxidation states by quantitatively controlling the thickness of oxide film on the surface of carbon sliding plate. The electrical contact characteristics of C/Cu contact pairs under different oxidation degrees of oxidation and the effect of interface oxidation on the electrical contact performance of current carrying friction pair are studied. The results show that Proper thickness of oxide film is helpful to obtain lower contact resistance, which is 17.9% lower than the initial value, improving the electrical contact performance of carbon/copper contact pair and facilitate energy transmission. However, excessively thick oxide film will increase the contact resistance, leading to frequent discharge at the contact interface. The total discharge energy is 104.4% higher than the initial value, and its electrical contact performance is degraded. The research content is helpful to further improve the service performance of carbon/copper contact pairs in low oxygen environment. ©2023 Chin.Soc.for Elec.Eng.

引用

页码：8502 / 8510

页数：8

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