Simulation Study on Arc Interruption Characteristics of DC Contactor Under Different Parameters

WANG Lijun; LIU Tongqi; HUANG Yifan; LI Wei; MA Qiang; LYU Wenqing

doi:10.13296/j.1001-1609.hva.2026.01.008

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Simulation Study on Arc Interruption Characteristics of DC Contactor Under Different Parameters

Research & Analysis | 更新时间：2026-04-13

- Simulation Study on Arc Interruption Characteristics of DC Contactor Under Different Parameters
- High Voltage Apparatus Vol. 62, Issue 1, Pages: 60-68(2026)
- 作者机构：
  
  西安交通大学电工材料电气绝缘全国重点实验室，西安　710049
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.01.008
  CLC：
- Received：07 June 2025，
  
  Revised：2025-09-02，
  
  Published：16 January 2026
- 稿件说明：
移动端阅览
WANG Lijun, LIU Tongqi, HUANG Yifan, et al. Simulation Study on Arc Interruption Characteristics of DC Contactor Under Different Parameters[J]. High Voltage Apparatus, 2026, 62(1): 60-68.
DOI：

WANG Lijun, LIU Tongqi, HUANG Yifan, et al. Simulation Study on Arc Interruption Characteristics of DC Contactor Under Different Parameters[J]. High Voltage Apparatus, 2026, 62(1): 60-68. DOI： 10.13296/j.1001-1609.hva.2026.01.008.

摘要

直流接触器广泛应用于电路的分断、控制与保护之中。直流接触器电弧的开断特性对于其工作可靠性至关重要。论文基于磁流体动力学（MHD）理论，建立了耦合外电路的直流接触器二维电弧仿真模型，该模型综合考虑了外部负载电路、触头运动以及非均匀外部磁场等因素对接触器电弧特性的影响，仿真研究了直流接触器不同关键参数下电弧开断过程中的电流电压变化曲线以及温度场分布。仿真结果表明，触头分断速度越大，燃弧时间越短；灭弧室气压越大，燃弧时间越短；不同的灭弧介质作用下，氢气灭弧性能最优，不同比例的气体灭弧介质进行灭弧，氢气含量越高燃弧时间越短。实验结果验证了仿真结果的正确性。

Abstract

DC contactors are widely used in the breaking

control and protection of electric circuit. The arc interruption characteristics of DC contactors is of great importance for its operating reliability. In this paper a two-dimensional arc simulation model of DC contactors based on the magneto-hydrodynamic(MHD)theory is set up

which comprehensively considers the influence of such factors as external load circuit

contact motion and uneven external magnetic field on the arc characteristic of contactors.The current-voltage variation curve and temperature field distribution during the arc interruption period of the DC contactor under different key parameters are simulated and studied. The simulation result shows that the higher the breaking speed of the contact

the shorter the arcing time.The higher the gas pressure in the interrupter

the shorter the arcing time.The best arc interruption performance of hydrogen under the action of different interrupting media is the best. In case of arc interruption with gas media with different ratio

the higher the contents of the hydrogen

the shorter the arcign time.The correctness of the simulation result is verified by the experimental result.

关键词

Keywords

references

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