Research on Transmission Line Vibration Condition Monitoring System and Energy Management Scheme Based on Micro Energy Harvesting

In view of the problem that the current transformer is mainly used in the existing transmission line vibration condition monitoring system, which is easily affected by the line load and has the problem of missing report, this paper proposes a new design scheme of transmission line vibration condition monitoring system based on micro energy collection. In this scheme, the vibration energy of transmission line is collected to obtain electric energy, and then a micro energy management circuit based on logic device is used to control the accumulation of weak energy and the power supply to the load. Finally, the sensor node can start to work when the line vibrates, so as to avoid the influence of line load on the condition monitoring system, avoid the omission of vibration data, and improve the system reliability. The experimental results show that the system can realize the condition monitoring of transmission line when the vibration frequency is 100Hz and the vibration intensity is 0.5g, 0.8g and 1g. The sampling interval is 21s, 17s and continuous sampling respectively.