Temperature Field Computation of CuCr Contact Under Large Impulse Current

WU Guolin; XU Guoshun; ZHANG Yong; ZHUANG Jinwu; WANG Chen

doi:10.13296/j.1001-1609.hva.2015.08.011

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Temperature Field Computation of CuCr Contact Under Large Impulse Current

更新时间：2025-04-26

- Temperature Field Computation of CuCr Contact Under Large Impulse Current
- High VoltageApparatus Vol. 51, Issue 8, Pages: 68-73(2015)
- 作者机构：
  
  1. 海军工程大学电气工程学院
  2. 湖北机场集团公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.08.011
  CLC： TM503.5
- Published：2015
- 稿件说明：
移动端阅览
[1]吴国林,徐国顺,张勇,庄劲武,王晨.脉冲大电流下的CuCr触头温度场计算[J].高压电器,2015,51(08):68-73.

WU Guolin, XU Guoshun, ZHANG Yong, et al. Temperature Field Computation of CuCr Contact Under Large Impulse Current[J]. High voltageapparatus, 2015, 51(8): 68-73.
[1]吴国林,徐国顺,张勇,庄劲武,王晨.脉冲大电流下的CuCr触头温度场计算[J].高压电器,2015,51(08):68-73. DOI： 10.13296/j.1001-1609.hva.2015.08.011.

WU Guolin, XU Guoshun, ZHANG Yong, et al. Temperature Field Computation of CuCr Contact Under Large Impulse Current[J]. High voltageapparatus, 2015, 51(8): 68-73. DOI： 10.13296/j.1001-1609.hva.2015.08.011.

摘要

电器开关触头温度场的研究

对于电器开关的正常运行有着重要意义。文中针对真空灭弧室Cu Cr触头

采用数值分析法

考虑触头材料硬度随温度的变化及触头间的电动斥力

提出了一种导电桥半径在仿真中实时变化的MATLAB算法

得到了触头在脉冲大电流下的瞬态温度场分布

并通过试验验证了仿真的正确性。结果表明

在对大电流的仿真中

对触头硬度随温度变化的考虑是十分必要的

文中提出的算法也是准确有效的。

Abstract

To investigate the temperature field of Cu Cr contact in vacuum arc control device of switch

numerical analysis method was adopted to proposed a MATLAB algorithm

in which the influence of temperature on the contact material’s hardness and the electric repulsion between contacts are considered

and the radius of conductive bridge can change in real time. Thus

the transient temperature field of the contact under large impulse current was obtained with the proposed algorithm

and the accuracy and effectiveness of the simulation were verified by experiment. The result shows that it is necessary to consider the influence of temperature on the contact’s hardness in large current simulation.

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