[1]龚宇佳,阮江军,吴泳聪,等.螺栓紧固型接触电阻数值拟合及等效方法[J].电瓷避雷器,2019,(06):169-175.[doi:10.16188/j.isa.1003-8337.2019.06.027]
 GONG Yujia,RUAN Jiangjun,WU Yongcong,et al.Numerical Fitting and Equivalent Method for Bolt-Fastening Contact Resistance[J].,2019,(06):169-175.[doi:10.16188/j.isa.1003-8337.2019.06.027]
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螺栓紧固型接触电阻数值拟合及等效方法()
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《电瓷避雷器》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年06期
页码:
169-175
栏目:
避雷器
出版日期:
2019-12-10

文章信息/Info

Title:
Numerical Fitting and Equivalent Method for Bolt-Fastening Contact Resistance
作者:
龚宇佳 阮江军 吴泳聪 龙明洋 黎 鹏
(武汉大学电气工程学院, 武汉 430072)
Author(s):
GONG Yujia RUAN Jiangjun WU Yongcong LONG Mingyang LI Peng
(School of Electrical Engineering, Wuhan University, Wuhan 430072, China)
关键词:
单位面积接触电阻 螺栓紧固搭接 参数测定 接触电阻数值计算模型 电磁-应力耦合计算
Keywords:
contact resistance per unit area bolt-fastening lap parameter determination numerical calculation model of contact resistance electromagnetic-stress coupling calculation
DOI:
10.16188/j.isa.1003-8337.2019.06.027
摘要:
接触电阻是影响电气设备电流场与温度场计算的重要参数,本文提出一种基于单位面积接触电阻的金属搭接接触电阻数值计算模型,用于计算不同工况下的搭接铜排的电流密度分布与热功率分布,并试验获得了裸铜排、镀镍铜排单位面积接触电阻与温度及压强的定量关系。利用上述计算模型与试验参数,通过电磁-应力耦合计算分析了搭接面积为60 mm×60 mm、50 mm×50 mm镀镍与裸铜排试品在不同扭矩下的接触电阻,并与测量结果进行了对比,仿真与试验结果最大相对误差7.00%,证明了计算方法的准确性。此外,该接触电阻模型不仅可以应用到开关柜温度场计算,还可推广到其它材料搭接的接触电阻计算。
Abstract:
The contact resistance is an important parameter to calculate the current field and the temperature field of the electrical equipment. This paper presents a numerical calculation model based on contact resistance per unit area, which is used to calculate the current density distribution and thermal power distribution under different working conditions. And the relationship between the contact resistance per unit area and temperature and pressure of bare copper row and nickel-plated copper row is obtained through the experiment. Using the calculation model above, the copper row test contact resistances of the lap area of 60 mm×60 mm and 50 mm×50 mm product are calculated under different torques through the analysis of electromagnetic-stress coupling calculation. And comparing the simulation results with the measured results, the maximum relative error is 7.00%, which proves the accuracy of the calculation method. In addition, the contact resistance model can be applied not only to calculate the temperature field of switchgear, but also to popularize the contact resistance calculation of other materials.

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备注/Memo

备注/Memo:
收稿日期:2018-03-29 作者简介:龚宇佳(1995—),女,硕士,研究方向为高压电磁多物理场分析。
更新日期/Last Update: 2019-12-10