Research And Application Of Transmission Line Condition Monitoring System

As an important part of the power network,the normal operation of transmission lines is the basis of ensuring the stability of the whole power network.Transmission lines span a wide range,and are mostly located in remote areas with complex terrain.These areas are prone to severe meteorological environment,which may lead to faults such as short circuit and disconnection,and may lead to tower collapse accidents in severe cases,endangering the stable operation of power system.Traditional manual inspection method is greatly influenced by external environmental factors,which is not only inefficient,but also consumes a lot of manpower and financial resources.At present,the on-line monitoring system of transmission lines in the market has a single monitoring function,and the collected data are mostly transmitted by wire,and shielded wires are used to prevent high voltage interference,which increases the cost for multi-point monitoring and is not conducive to the maintenance of later workers.Therefore,this paper proposes to use the mature Lo Ra and GPRS wireless communication technology to send the line state information collected by sensors to the cloud server,and the cloud server analyzes the data and stores it in My SQL database.Users can access the database through the Web client to view the running status of transmission lines in real time,which has significantly improved the efficiency of transmission line management.This paper first introduces the problems faced by transmission lines,expounds the current research status of transmission line condition monitoring technology,analyzes the requirements and functions of transmission line condition monitoring system,determines the overall scheme of the system,the scheme of taking electricity and the communication scheme,and establishes the mathematical model of wire vibration,sag and icing.Then the hardware and software system of state monitoring is studied.STM32 MCU is used as the core microprocessor in the hardware part,and the hardware circuit of microprocessor module,line state acquisition module,energy acquisition module and communication module is studied,and the hardware foundation of the system is realized.The software part mainly realizes the collection of line running state parameters,and transmits the collected data through the Lo Ra and GPRS communication program,and then analyzes and stores the data from the monitoring center designed from the cloud server,database and client,which ensures that the user can monitor the running state of the transmission line in real time.Finally,the experimental platform is set up to debug the transmission line condition monitoring system and the debugging results verify the reliability and effectiveness of the system studied in this paper.