摘要
建立了架空导线温度场的数学模型,针对3种不同型号的架空导线(LGJ-120/25,LGJ-150/25及LGJ-240/ 30)的温度场分布,对导线在自然对流及强迫对流条件下的散热情况进行了计算机建模模拟计算,导线温度计算结果与实测结果相符,在环境温度一定的情况下,得到导线温度与载流量、风速的关系曲线,得出导线温度与环境温度近似呈线性关系,环境温度每上升1℃导线温度上升的0.95℃。
The numerical model on conductor temperature field of overhead transmission lines is established. The temperature field distributions of 3 types aluminium conductor steel reinforced in 66 kV overhead transmission lines are analysed. The conductor temperature is approximately linear with the environmental temperature and it increases approximately 0. 95 ℃ as the environmental temperature increases 1 ℃. The computational solution is in accord with the measured solution. Through researching on the relationship of conductor current capacity with the environmental temperature, the wind velocity and the conductor operation temperature, thereby the theoretical and methodical foundation are provided on calculating the overhead transmission lines operation temperature accurately.
出处
《吉林电力》
2007年第5期5-8,共4页
Jilin Electric Power
关键词
架空输电线路
导线
温度场
数值计算
载流量
模拟
overhead transmission lines
conductor
temperature field
numerical calculation
current capacity
simulation
