Pengjie He, Jie Li, Ziqiang Lu, Haibo Ru, and Ziying Lu
Transmission line: Sag, remote monitoring
In the past, the transmission line condition monitoring often needs to be realised by manual method. This traditional method has great limitations and can not carry out real-time monitoring of the transmission line. In this paper, based on Narrowband Internet of Things (NB-IoT) wireless communication technology, a modern remote monitoring terminal for transmission line sag is designed to solve the real-time monitoring of transmission line status and reduce a series of transmission line accidents caused by sag. The specific design will start from the hardware and software, and the FreeRTOS operating system is used in the design process to ensure the real-time information processing. At the same time, a number of sub-tasks are established, such as sensor data acquisition, data filtering processing, etc. Through the system design, the sag status online monitoring and remote transmission functions are completed. To test the feasibility of the terminal design, the OneNet cloud platform was used for implementation research, and the results showed that the platform could view historical data and corresponding curve changes, which confirmed the feasibility of the terminal design, and could be applied in the remote monitoring of the arc of the transmission line to ensure the efficient operation of the transmission line.
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