基于多物理场的输电线路在线监测装置内部温湿度控制方法研究  

Research on Temperature and Humidity Control Method in Transmission Line Online Monitoring Device Based on Multiple Physical Fields

作　　者：龚培林 魏敏 严波 张国强 程洋 罗林根[1] 盛戈皞[1] Gong Peilin;Wei Min;Yan Bo;Zhang Guoqiang;Cheng Yang;Luo Lingen;Sheng Gehao(Department of Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Grid Anhui Electric Power Co.,Ltd.,Hefei Anhui 230601,China;Feixi Power Supply Branch,State Grid Anhui Electric Power Co.,Ltd.,Hefei Anhui 230601,China;China Electric Power Research Institute Co.,Ltd.,Beijing 100192,China;State Grid Anhui Electric Power Research Institute,Hefei Anhui 230601,China)

机构地区：[1]上海交通大学电气工程系,上海200240 [2]国网安徽省电力有限公司,安徽合肥230601 [3]国网安徽省电力有限公司肥西县供电公司,安徽合肥230601 [4]中国电力科学研究院有限公司,北京100192 [5]国网安徽省电科院,安徽合肥230601

出　　处：《电气自动化》2024年第6期55-57,共3页Electrical Automation

基　　金：国家电网有限公司科技项目(5500-202220140A-1-1-ZN)。

摘　　要：低温、凝露问题是造成输电线路状态监测装置测量性能下降的重要原因。以输电线路状态监测装置为研究对象,建立了监测装置的有限元数值仿真模型,得到了在安装加热器的条件下装置内部温湿度分布和变化情况,进而分析了加热对于装置内部不同位置的影响,讨论了温度升高和相对湿度降低的对应关系,为加热器的安装方式提供参考。仿真试验结果表明:加热条件下,装置上部空间的平均温度高于下部空间的平均温度;装置内部温度上升10 K,对应相对湿度降低30%RH以上。通过对加热器对内部温湿度场的研究有效提升了监测装置的环境适应性和监测可靠性。Low temperature and condensation problems are important reasons for the decline in measurement performance of transmission line status monitoring devices.A finite element numerical simulation model was established for the monitoring device of transmission line status,and the distribution and changes of temperature and humidity inside the device were obtained under the condition of installing heaters.The influence of heating on different positions inside the device was analyzed,and the corresponding relationship between temperature increase and relative humidity decrease was discussed,providing reference for the installation method of heaters.The simulation and experimental results show that under heating conditions,the average temperature in the upper space of the device is higher than that in the lower space;the internal temperature of the device increases by 10 K,corresponding to above 30%RH above decrease in relative humidity.By studying the effect of heaters on the temperature and humidity fields inside the monitoring device,the environmental adaptability and monitoring reliability of the device have been effectively improved.

关 键 词：输电线路监测装置 低温 凝露 有限元仿真 温湿度分布 

分 类 号：TM835[电气工程—高电压与绝缘技术]