摘要
为探究电弧触发器的燃弧规律,从电弧触发器的电热场模型出发,在满足一定假设条件下提出了电弧触发器的二维电热场模型,并推导出二维电位及温度场迭代式。基于MATLAB软件编写电弧触发器弧前时间的计算程序,分析了不同短路电流上升率仿真计算的弧前时间与试验结果的对比,误差在15%以内。
A two-dimensional thermo-electric field model of arc triggers was proposed under certain assumptions in order to explore the pre-arcing time’s law of arc triggers. Based on the model,the two-dimensional iteration formula of potential field and thermal field was derived. Based on the Matlab software,a program for calculating the pre-arcing time of arc triggers was written. The difference between the pre-arcing time of simulation and the test results was analyzed when the di/dt is different. The error is less than 15%,and the simulation results can provide certain reference value.
作者
杨建波
YANG Jianbo(Shanghai Electric Group Co.,Ltd.,Central Academy,Shanghai 200070,China)
出处
《电器与能效管理技术》
2018年第16期13-17,共5页
Electrical & Energy Management Technology
关键词
电弧触发器
电热场模型
弧前时间
温度场
arc trigger
thermo-electric field model
pre-arcing time
temperature field
