The sensor nodes on power transmission lines are essential for real-time monitoring of parameters such as vibration

temperature

humidity

tilt

and wind deflection

playing a critical role in ensuring the safe operation of transmission lines. However

current power supply methods

such as chemical batteries and solar energy

suffer from limitations like short lifespan and poor environmental adaptability

making it difficult to provide consistent and stable power. This study proposes a hybrid vibration energy harvester that integrates triboelectric

piezoelectric

and electromagnetic technologies. By optimizing a cantilever beam structure and array configuration

the device efficiently captures and converts specific micro-wind vibration frequencies into stable and enduring power for sensor nodes. Experimental results demonstrate that the hybrid energy harvester can stably generate power under natural micro-wind vibration conditions

achieving an average output power of 3.7 mW and a daily energy yield of approximately 25.26 mA?h

sufficient to power a self-assembled sensor node group with a daily energy consumption of 10. 39 mA?h. This innovation provides a reliable energy solution for online monitoring systems of power transmission lines

significantly contributing to their safe operation and stable power supply.