Analysis on Dynamic Contact Resistance Between Arcing Contacts for High Voltage Circuit Breaker

LIU Beiyang; FU Zhong; LIU Chun; ZANG Chunyan; TANG Guolong; YANG Jinggang; LIU Yuan

doi:10.13296/j.1001-1609.hva.2018.09.008

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Analysis on Dynamic Contact Resistance Between Arcing Contacts for High Voltage Circuit Breaker

更新时间：2025-04-26

- Analysis on Dynamic Contact Resistance Between Arcing Contacts for High Voltage Circuit Breaker
- High VoltageApparatus Vol. 54, Issue 9, Pages: 43-51(2018)
- 作者机构：
  
  1. 中国电力科学研究院
  2. 华中科技大学电气与电子工程学院
  3. 国网江苏省电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.09.008
  CLC： TM561
- Published：2018
- 稿件说明：
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[1]刘北阳,傅中,刘春,臧春艳,汤国龙,杨景刚,刘媛.高压断路器弧触头动态接触电阻研究[J].高压电器,2018,54(09):43-51.

LIU Beiyang, FU Zhong, LIU Chun, et al. Analysis on Dynamic Contact Resistance Between Arcing Contacts for High Voltage Circuit Breaker[J]. High voltageapparatus, 2018, 54(9): 43-51.
[1]刘北阳,傅中,刘春,臧春艳,汤国龙,杨景刚,刘媛.高压断路器弧触头动态接触电阻研究[J].高压电器,2018,54(09):43-51. DOI： 10.13296/j.1001-1609.hva.2018.09.008.

LIU Beiyang, FU Zhong, LIU Chun, et al. Analysis on Dynamic Contact Resistance Between Arcing Contacts for High Voltage Circuit Breaker[J]. High voltageapparatus, 2018, 54(9): 43-51. DOI： 10.13296/j.1001-1609.hva.2018.09.008.

摘要

高压断路器触头间的动态接触电阻是反映SF6高压断路器弧触头烧蚀程度的一个重要参数。研究弧触头动态接触电阻与弧触头的烧蚀程度之间的关系具有重要意义。基于电接触理论

建立了一个弧触头动态接触电阻仿真的理论模型。通过开断过程中的弧触头受力情况分析

得出在八触指自力型弧触头模型中

电流小于2 k A时

可忽略各种电动力的影响

只考虑触指接触压力的影响。在这个假设下

文中首次建立了简化的弧触头动态接触电阻的仿真模型。与大量弧触头模拟烧蚀试验结果对比

文中所提出的弧触头动态接触电阻仿真模型

在弧触头接触行程为15 mm以后

仿真结果与试验结果吻合度较高。

Abstract

The dynamic contact resistance between the arcing contacts of an SF6 high voltage circuit breaker is an im-portant parameter reflecting the erosion degree of the arcing contacts of the circuit breaker. It is of great importanceto study the relationship between the dynamic contact resistance of the arcing contacts and their erosion degree of thearcing contact. In this study

a theoretical model for dynamic contact resistance simulation of the arcing contacts isestablished on the basis of the theory of electrical contact. The contact force on the arcing contact during breakingprocess is analyzed. Result indicates that the influence of the contact force is only considered when the current is lessthan 2 kA in the model of eight-finger self-propelled arcing contacts. Under this assumption

a simulation model ofsimplified dynamic contact resistance of the arcing contact is established. Compared with the simulated erosion testresults of a large number of arcing contacts

the proposed simulation model of arcing contact dynamic contact resis-tance shows a good agreement with the test results after 15 mm of the contacting distance of arcing contact.

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