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
Key words
transmission line monitoring device/low temperature/condensation/finite element simulation/temperature and humidity distribution
维普
万方数据