基于通风条件的GIL管廊温度分布模拟分析  

Simulation analysis of temperature distribution in the GIL pipe gallery based on ventilation conditions

作　　者：马秀婷 张文科 王康悦 李艳 MA Xiuting;ZHANG Wenke;WANG Kangyue;LI Yan

机构地区：[1]山东建筑大学热能工程学院,山东济南250101

出　　处：《节能》2024年第10期20-25,共6页Energy Conservation

摘　　要：以设置通风系统的某地下气体绝缘金属封闭输电线路(GIL)管廊为研究对象,采用数值分析的方法,利用Fluent软件建立GIL管廊的物理及数学模型,充分考虑送风和排风对管廊温度的影响,设定管廊空间合理的初始和边界条件,基于自然送风、机械排风的通风方式,分析夏冬两季和极端温度下GIL管廊热环境的变化以及不同位置的温度变化,并对比正常工况与非正常工况的区别,揭示空间的温度分布特性。结果显示,在自然进风、机械排风模式下,GIL管廊内温度沿长度方向逐渐增加,管廊尾部温度最高,能够满足《电力电缆隧道设计规程》(DL/T 5484—2013)要求。夏季非正常工况下,尾部温度较高,可通过增加风口和风量改善;冬季则可考虑自然进风自然排风方式。Taking an underground gas-insulated metal-enclosed transmission line(GIL) corridor with a ventilation system as the research object,the numerical analysis method was adopted to establish the physical and mathematical model of GIL corridor by using Fluent software.The influence of air supply and exhaust on the temperature of the corridor was fully considered.Reasonable initial and boundary conditions of the corridor space were set.The thermal environment changes of GIL corridor in summer and winter and at extreme temperatures as well as temperature changes at different locations were analyzed,and the difference between normal and abnormal working conditions was compared to reveal the spatial temperature distribution characteristics.The results show that under the natural ventilation and mechanical exhaust mode,the temperature inside the GIL tunnel gradually increases along the length,with the highest temperature at the end of the tunnel,which can meet the requirements of the "Code for design of power cables tunnel"(DL/T 5484—2013).In the event of abnormal conditions in summer,the temperature at the tail is relatively high and can be improved by increasing the air inlets and wind volume;in winter,natural ventilation and natural exhaust methods can be considered.

关 键 词：地下管廊 通风系统 温度分布 数值模拟 

分 类 号：TM75[电气工程—电力系统及自动化]