摘要
文章通过研究金属导体回路在交流电下做功与对外界散热的关系,建立了电力金具的温升试验模型,并给出了温升与时间的方程.通过对试验数据的拟合,得到了平衡温升与时间常数.通过该方程导出了温升与电流的平方成正比.该关系可用来确定稳态温升时的试验电流,并能通过拟合系数计算对流换热系数.
By studying the relationship of current work in metal and heat dissipation to the air,the temperature risse model is established.With the equation,experimental data is fitted,time constant and equilibrium temperature are obtained.Throught this equation,the temperature rist is proportional to the square of the current,which can be used to determine the test current at the steady state.Also the convective heat transfer coefficient can be calculated through the fitted coefficient.
作者
陈敏
宋箎
姜尧
胡建伟
CHEN Min;SONG Chi;JIANG Yao;HU Jianwei
出处
《电力系统装备》
2023年第4期15-17,共3页
Electric Power System Equipment
关键词
温升方程
对流换热系数
电流与温升的关系
temperature rise equation
convective heat transfer coefficient
the relationship between current and temperatre rise
