Research Of The On-line Temperature Monitoring Technology Of Transmission Lines

Transmission lines is the main architecture of the grid in China,its operation directly affects the safety and reliable operation of the whole power grid.It is closely related to the economic development and social livelihood,especially in major political and cultural activities.Transmission lines are widely distributed in our country,the surrounding environment is complex and prone to failure.Transmission line temperature on-line monitoring can not only understand the front-end equipment running status,to provide reliable data for fault diagnosis,circuit design,can also be used for dynamic capacity increase of transmission line through the real-time monitoring of temperature and other information,to provide technical support to improve the line capacity.To carry out on-line monitoring technology of transmission line temperature is the basis of realizing "strong smart grid" in china.Firstly,this paper describes the background and significance of the research on the on-line temperature monitoring technology of transmission lines,and introduces the current research status of the technology at home and abroad.Based on the analysis of the current temperature measurement method,and then from the relationship between the transmission line load and the line temperature,a mathematical model of dynamic compatibilization based on the transmission line temperature is constructed.According to the system design principles and requirements,analysis and research from the power supply mode and the communication way,according to the temperature measurement terminal electric difficult problem,put forward an improved power technology from high voltage electric field induction,solve the supply problem,in order to ensure the reliable communication system,using Zig Bee distance combined with GPRS remote communication mode.To achieve the communication between the host and the temperature measurement terminal,base station,monitoring center.Then,put forward the overall scheme of on-line monitoring system of transmission line temperature,and analyzes the function of each part of the structure of the system function and the system,because the transmission link will generate huge amounts of data,the traditional database is difficult to deal with the current requirements of data storage and analysis,data analysis module in the monitoring center in the background with the overall structure of the system.Finally,on the basis of the previous research,the hardware and software of the temperature measuring terminal and temperature measuring host are designed and studied.The main controller of the terminal adopts the leading CC2530 chip,which can transmit and receive data wirelessly,without external communication module.According to the function of the system,the software is designed,the temperature measurement system is tested,and the system is applied in Zibo city.