The JC-TLOM500B transmission line wire temperature online monitoring system independently developed by the company uses a high-precision temperature sensor attached to the wire to collect the wire temperature, and sends the collected information to the Monitoring center to realize real-time monitoring of wire temperature. The system supports two modes: induction power supply and solar panel + battery power supply, which is easy to install. After being put into operation, the operation department can timely grasp the heating condition and development trend of the wire, and scientifically arrange the online capacity increase of the transmission line based on this parameter, improve economic efficiency, and improve the safe operation of the line and the level of information management.