基于多物理场有限元的开关柜温升仿真研究Simulation Research on Temperature Rise of Switch Cabinet Based on Multi-physics Finite Element
黄宪武,唐锦尧,张庆波,谢龙裕,周卓伟,叶灿伦
HUANG Xianwu,TANG Jinyao,ZHANG Qingbo,XIE Longyu,ZHOU Zhouwei,YE Canlun
摘要(Abstract)：
长期加热和温度过高会严重影响电力设备的电气和绝缘性能,从而造成安全隐患。基于涡流场、气体流场和温度场的理论,通过有限元建模和仿真计算,研究了强制对流进风口风速、安装位置对开关柜内最高温度的影响。结果表明:进风口在开关柜底部,当风速大于1.2 m/s时,随着气流速度的增大,开关柜内最高温度下降明显;进风口在前后门对开关柜内最高温度位置的降温效果最佳,底部次之,顶部降温效果最差;随着通风孔数量的增多,柜内温度略有下降。
Long-term heating and high temperature will seriously affect the electrical and insulation performance of power equipment, and thereby causing potential safety hazards. This paper, based on the theory of eddy current field, airflow field and the temperature field, studies the impact of forced convection inlet air velocity and different installation positions on the maximum temperature in the switchgear via finite element modeling and simulation. The result shows that the maximum temperature in the cabinet decreases with the air velocity increase when the inlet is at the cabinet bottom and the air velocity is larger than 1.2 m/s; the cooling effect reduces progressively when the inlets are at the front and rear doors, at the bottom and the top;with the increase of air vents, the temperature in the cabinet is slightly reduced.
关键词(KeyWords)：
开关柜;温度;流速;进风口风速;通风口
switchgear;temperature;flow rate;inlet wind speed;vent
基金项目(Foundation): 广东省电网公司科技项目(GDKJXM20190392,031900KK52190001)
作者(Author):
黄宪武,唐锦尧,张庆波,谢龙裕,周卓伟,叶灿伦
HUANG Xianwu,TANG Jinyao,ZHANG Qingbo,XIE Longyu,ZHOU Zhouwei,YE Canlun
DOI: 10.19585/j.zjdl.202007004
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