Simulation of High-voltage Circuit Breaker Contact Resistance via Contact Area Coupling Method

NIU Chunping; QIANG Ruochen; WANG Xiaohua; RONG Mingzhe; JIN Guangyao

doi:10.13296/j.1001-1609.hva.2015.02.003

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Simulation of High-voltage Circuit Breaker Contact Resistance via Contact Area Coupling Method

更新时间：2025-04-26

- Simulation of High-voltage Circuit Breaker Contact Resistance via Contact Area Coupling Method
- High VoltageApparatus Vol. 51, Issue 2, Pages: 18-23(2015)
- 作者机构：
  
  1. 西安交通大学电力设备电气绝缘国家重点实验室
  2. 国网陕西省电力公司经济技术研究院
  3. 河南平高电气股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.02.003
  CLC： TM561
- Published：2015
- 稿件说明：
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[1]纽春萍,强若辰,王小华,荣命哲,金光耀.高压断路器接触电阻的耦合面积法分析[J].高压电器,2015,51(02):18-23.

NIU Chunping, QIANG Ruochen, WANG Xiaohua, et al. Simulation of High-voltage Circuit Breaker Contact Resistance via Contact Area Coupling Method[J]. High voltageapparatus, 2015, 51(2): 18-23.
[1]纽春萍,强若辰,王小华,荣命哲,金光耀.高压断路器接触电阻的耦合面积法分析[J].高压电器,2015,51(02):18-23. DOI： 10.13296/j.1001-1609.hva.2015.02.003.

NIU Chunping, QIANG Ruochen, WANG Xiaohua, et al. Simulation of High-voltage Circuit Breaker Contact Resistance via Contact Area Coupling Method[J]. High voltageapparatus, 2015, 51(2): 18-23. DOI： 10.13296/j.1001-1609.hva.2015.02.003.

摘要

高压断路器触头部位因电接触现象而产生的热量是热分析中的关键问题。然而

作为一种传统并常用的接触电阻模型

导电桥结构在模拟电接触时参数的准确获取存在一定困难

且不易使用在高压断路器复杂的多触指结构中

因此笔者提出了一种新的接触电阻建模处理方法。新方法不再建立类似于导电桥的宏观几何结构

而是将两侧接触面上的部分面积耦合在一起

使得电流仅可以从耦合面内流过

通过控制耦合面积值即可实现电流收缩效果

模拟出适当的接触电阻值。在此基础上

笔者通过仿真结果与实际值的对比及进一步研究

证明了接触面积耦合法的有效性

对今后高压断路器触头模型的处理具有一定的参考意义。

Abstract

The key issue in thermal analysis of high voltage circuit breakers is the heat due to electric contact. However

as a conventional contact resistance model

the contact bridge structure is difficult in obtaining accurate parameters and is not feasible for the complex multi-contact structure of a high-voltage circuit breaker. In this paper

a novel contact resistance modeling method is proposed. In the method

the establishment of macro geometrical structure like contact bridge is given up

alternatively

some areas on both contact surfaces are coupled together to localize the current in the coupled area. Thus

the shrinking effect of current can be easily achieved via controlling the coupled area and proper contact resistance can be simulated. The validity of the proposed contact area coupling method is proved through the comparison between simulating and real results and further studies. This method may facilitate the process of high-voltage breaker contact model.

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