基于有限元法的户外环网柜防凝露方法研究  

Anti-condensation Method for Outdoor RMU Based on Finite Element Analysis

作　　者：张炜 闫志强[2] 王也[3] 朱斌[3] 贾志东[3] 朱正国 

机构地区：[1]深圳市供电局有限公司,深圳518000 [2]西华大学,成都610039 [3]清华大学深圳研究生院,深圳518055

出　　处：《高压电器》2017年第9期101-106,113,共7页High Voltage Apparatus

摘　　要：凝露问题普遍存在于广东等南方地区的户外环网柜中,到目前为止还没有彻底有效的解决方案。加强户外环网柜的自然通风可以绿色安全地缓解其内部凝露问题,进而增强供电可靠性。文中利用三维建模软件Solidworks及有限元分析软件Ansys对户外环网柜内部的空气流场进行了仿真研究,研究了风速、外壳尺寸以及通风口形状对通风效果的影响。仿真结果表明:户外环网柜外壳在现行尺寸、结构和通风口的形状位置条件下,其通风效果受到了严重制约。通过合理增加外壳尺寸、优化结构以及改进进风口的形状位置可以有效提高通风效果,达到防凝露的目的。Condensation in outdoor RMU exists widely in south of China, and until now there is no effective solution to this problem. Enhancing natural ventilation is a safe and effective approach without pollution for preventing condensation in outdoor RMU, and can hence improve the reliability of power supply. In this paper, the three-dimensional modeling software Solidworks and the finite element analysis software Ansys are adopted to simulate the convection field in outdoor RMU, and the effects of wind speed, outer case size and vent shape on ventilation are analyzed. Simulation indicates that the existing size, structure, and vent shape and position of the outer case hinder the ventilation in outdoor RMU. So, the ventilation in outdoor RMU can be effectively improved to prevent clew condensation by properly increasing the outer case size and optimizing the structure, vent shape and position.

关 键 词：户外环网柜 凝露 有限元 箱体尺寸 通风口形状 

分 类 号：TM643[电气工程—电力系统及自动化]