Analysis of the Influence of Metal Erosion on the Thermal-pressure Effect of Short-circuit Arcing Inside a Closed Container

LI Peng; GAO Yehe; LIU Chang; HONG Qianying; LIU Qihui; WU Tian

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Analysis of the Influence of Metal Erosion on the Thermal-pressure Effect of Short-circuit Arcing Inside a Closed Container

更新时间：2025-06-18

- Analysis of the Influence of Metal Erosion on the Thermal-pressure Effect of Short-circuit Arcing Inside a Closed Container
- High Voltage Apparatus Pages: 1-9(2025)
- 作者机构：
  
  1.三峡大学湖北省输电线路工程技术研究中心，湖北　宜昌　 443002
  2.三峡大学电气与新能源学院，湖北　宜昌　 443002
  3.国网邯郸供电公司，河北　邯郸　 056035
  4.国网浙江省电力有限公司磐安县供电公司，浙江　磐安　 322300
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51807110);National Natural Science Research Project of Yichang(A20-3-020)
- DOI：
  CLC：
- Published：
- 稿件说明：
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LI Peng, GAO Yehe, LIU Chang, et al. Analysis of the Influence of Metal Erosion on the Thermal-pressure Effect of Short-circuit Arcing Inside a Closed Container[J/OL]. High voltage apparatus, 2025, 1-9.
DOI：

LI Peng, GAO Yehe, LIU Chang, et al. Analysis of the Influence of Metal Erosion on the Thermal-pressure Effect of Short-circuit Arcing Inside a Closed Container[J/OL]. High voltage apparatus, 2025, 1-9. DOI：

摘要

金属封闭开关设备内部发生短路燃弧故障时，电弧烧蚀金属材料生成的金属蒸气是影响热—力效应的重要因素之一，但目前仍缺乏金属烧蚀量对热—力效应影响的定量研究。基于磁流体动力学（MHD）理论与金属蒸气的质量浓度方程，建立了考虑金属烧蚀的短路电弧数学模型，并在计算模型内部放置带孔金属板，通过改变金属板孔径大小控制金属烧蚀量，以定量评估金属烧蚀量对封闭容器内部短路燃弧产生的热—力效应的影响。结果表明：铜、铁金属板孔径越小，金属烧蚀量越大，封闭容器内压力升与最高温升越低；相同孔径下，铜金属板蒸发质量高于铁金属板，且安装铜金属板时获得的压力升与最高温升均低于安装铁金属板。

Abstract

When a short-circuit arcing fault occurs inside a metal-enclosed switchgear

the metal vapor generated by arc erosion of metal materials is one of the important factors affecting the thermal-pressure effect. However

there is still a lack of quantitative research on the effect of metal erosion on the thermal-pressure effect. Based on the magnetic hydro-dynamics theory and the mass concentration equation of metal vapor

a mathematical model of short-circuit arc considering metal erosion is established. A perforated metal plate is placed inside the calculation model

and the amount of metal erosion is controlled by changing the inner diameter of the metal plate

so as to quantitatively evaluate the effect of metal erosion on the thermal-pressure effect of short-circuit arcing inside the closed container. The results show that the smaller the inner diameter of copper and iron metal plates

the greater the amount of metal erosion

and the lower the pressure rise and the highest temperature rise in the closed container; under the same inner diameter

the evaporation mass of copper metal plate is higher than that of iron metal plate

and the pressure rise and the highest temperature rise obtained when the copper metal plate is installed are lower than those when the iron metal plate is installed.

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references

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