综合管廊电力舱三维磁场-热场耦合计算

Three Dimensional Magnetic-Thermal Fields Coupling Calculation of Integrated Powerhouse

综合管廊电力舱内部拥有众多不同电压等级的电缆线路,会产生大量的热量,需强制通风对其散热,故风速的大小会影响舱内温度的分布.本文根据综合管廊电力舱实际工程图建立三维等效计算模型,通过加载电流、风速等条件,采用有限元法对电力舱进行三维磁场-热场耦合计算,得到电力舱内空气速度分布和温度分布.通过改变进风口风速,研究不同风速情况下电力舱内温升分布规律.对做好电缆线路入廊规划,以此提高电力电缆等管线运行的可靠性和安全性具有重要意义.

There heat and require are many different types of cable lines in the integrated powerhouse, which generate a lot of forced ventilation to dissipate the heat. Therefore, the wind velocity will affect the temperature distribution inside the cabin. In this paper, the 3D equivalent calculation model is established based on the actual engineering drawings of the integrated powerhouse. The finite element method is used to calculate the air velocity and temperature distribution in the electric power cabin by 3D magnetic thermal field coupling of the electric power cabin by loading current, wind velocity and other conditions. The temperature distribu tion in electric power cabin with different wind velocities is studied by changing inlet air velocity. It is of great significance to plan the corridor of the cable line so as to improve the reliability and safety of the operation of power cable and other pipelines.