配电室温度场与湿度场的建模与仿真分析
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摘要
考虑到变电站配电室内配电设备对环境温度和湿度有较严苛要求,因此有必要研究配电室内温度和湿度分布规律,有助于提高配电设备可靠性。按照与温度计算有关的能量传递方程和与湿度计算有关的气体扩散方程,由理论计算公式分析可知直接计算涉及多变量的耦合,求解难度大。本文采用有限元分析软件ANSYS对配电室的温度场和湿度场进行仿真计算,首先根据实际的典型配电室建立仿真计算模型,并高精度划分有限元网格。其次根据现场运行情况整定计算仿真需要的计算参数,利用仿真计算模型得到了室内温度场和湿度场的水平面分布情况。通过改变风机流量,分析了风机流量变化对配电柜内部温度的影响效果,总结了配电室内温度场与湿度场的分布规律。
Distribution equipment in substation distribution room has stringent requirements on environment temperature and humidity,so it is necessary to study the distribution law of temperature and humidity in distribution room,which is helpful to improve the reliability of distribution equipment. According to the energy transfer equation related to temperature calculation and the gas diffusion equation related to humidity calculation,it can be seen from the theoretical calculation formula that the direct calculation involves multivariable coupling,so it is difficult to solve. In this paper,the finite element analysis software ANSYS is used to simulate the temperature field and humidity field in the distribution room. Firstly,the simulation calculation model is established according to the actual typical distribution room,and the finite element mesh is divided accurately. Secondly,the simulation parameters are set according to the field operation,then the horizontal distribution of indoor temperature field and humidity field is obtained by the simulation calculation model. Then,by changing the flow rate of the fan,the effect of the change of the flow rate of the fan on the internal temperature of the distribution cabinet is analyzed,and the distribution law of the temperature field and the humidity field in the distribution room is summarized.
Distribution equipment in substation distribution room has stringent requirements on environment temperature and humidity,so it is necessary to study the distribution law of temperature and humidity in distribution room,which is helpful to improve the reliability of distribution equipment. According to the energy transfer equation related to temperature calculation and the gas diffusion equation related to humidity calculation,it can be seen from the theoretical calculation formula that the direct calculation involves multivariable coupling,so it is difficult to solve. In this paper,the finite element analysis software ANSYS is used to simulate the temperature field and humidity field in the distribution room. Firstly,the simulation calculation model is established according to the actual typical distribution room,and the finite element mesh is divided accurately. Secondly,the simulation parameters are set according to the field operation,then the horizontal distribution of indoor temperature field and humidity field is obtained by the simulation calculation model. Then,by changing the flow rate of the fan,the effect of the change of the flow rate of the fan on the internal temperature of the distribution cabinet is analyzed,and the distribution law of the temperature field and the humidity field in the distribution room is summarized.
引文
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[17]陈丽,黄新波,吴孟魁,等.箱式变电站温湿度在线监测关键技术研究[J].广东电力,2016,29(05):118-123.CHEN Li,HUANG Xinbo,WU Mengkui,et al.Research on key technology for online monitoring on humiture of box-type substation[J].Guangdong Electric Power,2016,29(05):118-123.
[18]贺琛,王彦波,王云烨.基于电力通信传输网大数据的温度监测系统研究[J].浙江电力,2016,35(07):65-68.HE Chen,WANG Yanbo,WANG Yunye.Research on temperature monitoring system based on big data of power communication transmission system[J].Zhejiang Electric Power,2016,35(07):65-68.
[2]刘云鹏,郭沁.高压开关柜电缆室温湿度场数值计算分析[J].高压电器,2017,53(09):6-10+16.LIU Yunpeng,GUO Qin.Numerical calculation of temperature and humidity fields in cable room of high-voltage switchgear[J].High Voltage Apparatus,2017,53(09):6-10+16.
[3]耿江海,钦雨晨,郭沁等.不同通风条件对环网柜凝露现象的影响[J].中国电力,2017,50(11):103-107.GENG Jianghai,QIN Yuchen,GUO Qin,et al.Research on RMUcondensation phenomenon under different ventilation conditions[J].Electric Power,2017,50(11):103-107.
[4]林浩然,牛海清,张耿斌,等.高湿条件下空气间隙放电规律的试验研究[J].高压电器,2014,50(01):87-91.LIN Haoran,NIU Haiqing,ZHANG Gengbin,et al.Experimental study on air-gap discharge characteristics in heavy humidity[J].High Voltage Apparatus,2014,50(01):87-91.
[5]韦玮,李鑫,徐晓刚,等.基于Fluent的植物绝缘油配电变压器温度场有限元仿真分析[J].广东电力,2016,29(10):121-126.WEI Wei,LI Xin,XU Xiaogang,et al.Finite element simulation for temperature field of vegetable insulating oil distribution transformer based on fluent[J].Guangdong Electric power,2016,29(10):121-126.
[6]汪德华,杨春,王革鹏,等.基于Fluent的超高压变压器二维温度场分析[J].高压电器,2015,51(06):161-165.WANG Dehua,YANG Chun,WANG Gepeng,et al.Analysis of two-dimensional temperature field in ultra-high voltage transformer based on fluent[J].High Voltage Apparatus,2015,51(06):161-165.
[7]王秉政,江健武,赵灵,等.高压开关柜接触发热温度场数值计算[J].高压电器,2013,49(12):42-48.WANG Bingzheng,JIANG Jianwu,ZHAO Ling,et al.Temperature field simulation of contact heating in high voltage switchgear[J].High Voltage Apparatus,2013,49(12):42-48.
[8]徐立群,申亮,倪福生.KYN28A-12 k V/4000A开关柜的结构改进与温度场分析[J].高压电器,2017,53(03):254-258.XU Liqun,SHEN Liang,NI Fusheng.Structure modification and temperature field analysis of KYN28A-12 kV/4 000 A switchgear cabinet[J].High Voltage Apparatus,2017,53(03):254-258.
[9]谢裕清,李琳,宋雅吾,等.油浸式电力变压器绕组温升的多物理场耦合计算方法[J].中国电机工程学报,2016,36(21):5957-5965.XIE Yuqing,LI Lin,SONG Yawu,et al.Multi-physical field coupled method for temperature rise of winding in oil-immersed power transformer[J].Proceedings of the Csee,2016,36(21):5957-5965.
[10]刘凤英,郭振华,景崇友,等.油浸式变压器绕组热点温度的计算与影响因素的研究[J].变压器,2014,51(06):22-26.LIU Fengying,GUO Zhenhua,JING Chongyou,et al.Research on influence factors and calculation of winding hot spot temperature of oil-immersed transformer[J].Transformer,2014,51(06):22-26.
[11]华征,侯智剑,戚岭娜,等.基于Fluent的集合式并联电容器内部温度场仿真分析[J].电力电容器与无功补偿,2016,37(04):37-42.HUA Zheng,HOU Zhijian,QI Lingna,et al.Internal temperature field simulation analysis of assembled shunt capacitor based on fluent[J].Power Capacitor&Reactive Power Compensation,2016,37(04):37-42.
[12]倪学锋,王子建,林浩,等.特高压用并联电容器温度场仿真[J].高压电器,2016,52(02):107-114.NI Xuefeng,WANG Zijian,LIN Hao,et al.Temperature field simulation of shunt power capacitor used to uhv engineering[J].High Voltage Apparatus,2016,52(02):107-114.
[13]石光,曾凯,吴春红,等.基于ANSYS的多次换相失败时平波电抗器暂态温度场仿真[J].变压器,2016,53(11):29-33.SHI Guang,ZENG Kai,WU Chunhong,et al.Transient temperature field simulation based on ANSYS for smoothing reactor during commutation failure repeatedly[J].Transformer,2016,53(11):29-33.
[14]陈荆州,杜志业,王栋,等.高压开关柜温度场数值分析[J].电工电能新技术,2018,37(01):38-44.CHEN Jingzhou,DU Zhiye,WANG Dong,et al.Numerical analysis of temperature field of high voltage switchgear[J].Advanced Technology of Electrical Engineering&Energy,2018,37(01):38-44.
[15]熊兰,徐敏捷,杨子康,等.高压开关柜电缆室温度场分析及在线监测系统构建[J].电力自动化设备,2014,34(6):153-157.XIONG Lan,XU Minjie,YANG Zikang,et al.Thermal field analysis for cable room of high-voltage switchgear and design of online monitoring system[J].Electric Power Automation Equipment,2014,34(06):153-157.
[16]钱家骊,袁大陆,杨丽华,等.高压开关柜-结构、计算、运行、发展[M].北京:中国电力出版社,2007.
[17]陈丽,黄新波,吴孟魁,等.箱式变电站温湿度在线监测关键技术研究[J].广东电力,2016,29(05):118-123.CHEN Li,HUANG Xinbo,WU Mengkui,et al.Research on key technology for online monitoring on humiture of box-type substation[J].Guangdong Electric Power,2016,29(05):118-123.
[18]贺琛,王彦波,王云烨.基于电力通信传输网大数据的温度监测系统研究[J].浙江电力,2016,35(07):65-68.HE Chen,WANG Yanbo,WANG Yunye.Research on temperature monitoring system based on big data of power communication transmission system[J].Zhejiang Electric Power,2016,35(07):65-68.