基于COMSOL仿真分析的环网柜湿度控制

doi:10.11930/j.issn.1004-9649.201903057

中国电力 ›› 2020, Vol. 53 ›› Issue (12): 206-213.DOI: 10.11930/j.issn.1004-9649.201903057

基于COMSOL仿真分析的环网柜湿度控制

王寅超¹, 丁银梅¹, 李卫彬¹, 杨勇¹, 王月强¹, 汪胡根², 乔飞², 王俊生², 谢勇¹, 俞佳敏¹, 陆忠心¹

1. 国网上海市电力公司长兴供电公司，上海 202150;
2. 中国电建集团装备研究院有限公司，上海 201399

收稿日期:2019-03-26 修回日期:2019-10-10 发布日期:2020-12-16
作者简介:王寅超(1987—)，男，工程师，从事电力系统自动化研究，E-mail: 15801881593@163.com;陆忠心(1971—)，男，通信作者，工程师，从事电力系统自动化研究，E-mail: 505307970@qq.com
基金资助:
国家自然科学基金资助项目（51577135）；上海市科学与技术委员会基金资助项目（17511109300）

Humidity Control of RMU Based on COMSOL Simulation Analysis

WANG Yinchao¹, DING Yinmei¹, LI Weibin¹, YANG Yong¹, WANG Yueqiang¹, WANG Hugen², QIAO Fei², WANG Junsheng², XIE Yong¹, YU Jiamin¹, LU Zhongxin¹

1. Changxing Power Supply Company of Shanghai Electric Power Co., Ltd., Shanghai 202150, China;
2. China Electrical Construction Group Equipment Research Institute Co., Ltd., Shanghai 201399, China

Received:2019-03-26 Revised:2019-10-10 Published:2020-12-16
Supported by:
This work is supported by National Natural Science Foundation of China (No.51577135) and Science Foundation of Shanghai Municipal Commission of Science and Technology (No.17511109300)

摘要/Abstract

摘要： 环网柜在潮湿凝露的环境下长期运行会导致设备的绝缘强度下降，从而易发生放电、击穿等故障，进一步造成设备的使用寿命缩短，因此需要保证良好的环网柜运行环境。半导体冷凝除湿是新兴的除湿技术，通过将水分冷凝后排出柜体，可控制柜内湿度。利用COMSOL仿真软件对半导体冷凝除湿进行模拟，将柜内的气流场、温度场及水分传输3个物理场进行耦合，研究安装除湿器后柜内的流场、温度、相对湿度的分布变化以及除湿器安装位置对除湿效果的影响。结果表明：加装除湿器后，环网柜内温度变化不大，相对湿度在11 h左右可从90%降至50%，且除湿器安装在柜体底部的除湿效果最优，仿真结果得到了实验验证。给出的除湿器的安装位置对环网柜内温度、湿度的分布变化及对除湿效果的影响可供环网柜内安装除湿器时参考。

关键词: 环网柜, 冷凝除湿, COMSOL, 相对湿度, 控制

Abstract: The long-term operation of ring main unit (RMU) in humid condensation environment will lead to the decrease of insulation strength of equipment, which will result in discharge and breakdown faults, and further shorten the service life of equipment. Therefore, it is very necessary to ensure a good operation environment for RMU. Semiconductor condensation dehumidification is an emerging dehumidification technology that controls the humidity in the cabinet by condensing moisture and discharging it out of the cabinet. In this paper, the COMSOL simulation software is used to simulate semiconductor condensation dehumidification. The air flow field, heat field and water transport in the dehumidifier are coupled to study the distribution changes of flow field, temperature and relative humidity after the installation of the dehumidifier, as well as the influence of dehumidifier installation position on dehumidification effect. The results show that the temperature inside the RMU changes little after the installation of the dehumidifier, the relative humidity can be reduced from 90% to 50% in about 11h, and the dehumidification effect is the best when the dehumidifier is installed at the bottom of the cabinet. The results of the simulation are verified by experiments. In this paper the influence of installation position of dehumidifier on temperature and humidity distribution and dehumidification effect in RMU is given, which can provide a reference for installation of dehumidifier in RMU.

Key words: RMU, condensation dehumidification, COMSOL, relative humidity, control

王寅超, 丁银梅, 李卫彬, 杨勇, 王月强, 汪胡根, 乔飞, 王俊生, 谢勇, 俞佳敏, 陆忠心. 基于COMSOL仿真分析的环网柜湿度控制[J]. 中国电力, 2020, 53(12): 206-213.

WANG Yinchao, DING Yinmei, LI Weibin, YANG Yong, WANG Yueqiang, WANG Hugen, QIAO Fei, WANG Junsheng, XIE Yong, YU Jiamin, LU Zhongxin. Humidity Control of RMU Based on COMSOL Simulation Analysis[J]. Electric Power, 2020, 53(12): 206-213.

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https://www.electricpower.com.cn/CN/Y2020/V53/I12/206

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基于COMSOL仿真分析的环网柜湿度控制

Humidity Control of RMU Based on COMSOL Simulation Analysis

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基于COMSOL仿真分析的环网柜湿度控制

Humidity Control of RMU Based on COMSOL Simulation Analysis

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