Research On On-line Monitoring System Of Transmission Line Based On Onenet Platform

As an important part of power system,transmission line is the key to the stable operation of power system.However,it has been exposed to the open field for a long time,and is devastated by bad weather and geographical environment.At the same time,it is also affected by the surrounding buildings construction and the behaviors of tower theft and other factors.Therefore,there is big safety problem in transmission line.Traditional manual inspection not only needs a lot of manpower and material resources,but also cannot monitor online in real time,which not meet the demand of modern safe production for transmission line.In order to solve this problem,first of all,the types and methods of system monitoring are determined by analyzing the development status of on-line monitoring technology for transmission lines.An improved C4.5 algorithm model is established to apply the anti-theft alarm to the cable,which improves the accuracy of anti-theft alarms.After that,a set of on-line monitoring system for transmission line based on OneNet platform is designed.The system is composed of monitoring terminal and OneNet platform.The hardware circuit of the monitoring terminal is based on STM32F407VET6 and STM32F103C8T6 as the core controller,which realize the following functions:connecting angle sensor,pull sensor,vibration sensor and camera module to identify the state of the tower and wire,the function of anti-theft alarm and image information monitoring is realized;connecting the temperature and humidity sensor and the wind speed sensor,the micro meteorological monitoring function is realized;connecting the infrared temperature sensor is to realize the temperature monitoring function;With the combination of infrared detection and buzzer,the bird driving function of power tower is realized.Finally,the real-time monitoring data information is uploaded to the OneNet network platform by using WIFI or GPRS module.The staff can use the smart devices such as mobile phone and computer to monitor the state of the transmission line in real time at any time.And when the line is in an abnormal state,the GSM module is used to realize short message alarm.The hardware and software of the system are installed and debugged in the laboratory,and the function of the system is verified.The experimental results show that the parameters range and accuracy monitored by the system meet the national regulations,and the functions are successfully realized.Finally,the design scheme is summarized and further optimization and upgrading of the system are proposed.