Self-Adaptive Omnidirectional Wind Domain Energy Harvesting Based on Dual-Mode Complementary Strategy of Wind-Induced Vibration.

The harvesting and utilization of vibration energy from transmission lines can effectively advance the development of smart grids. However, variations in wind direction significantly affect the vibration status of transmission lines-a problem often overlooked in research. This paper clarifies the gap problem of wind-induced vibration energy harvesting in transmission lines for the first time, and presents a dual-mode complementary strategy of wind-induced vibration for transmission lines. The core innovation is to achieve self-adaptive omnidirectional wind domain energy harvesting by wind-vibration energy collaborative response, which overcomes the limitation of single vibration energy harvesting in transmission lines that depend on a specific wind direction. The designed wind-vibration hybrid nanogenerator (W-VHNG) ingeniously integrates two different TENG mechanisms to achieve broadband breeze vibration energy capture (vibration frequency range of 5-60 Hz), wide wind speed and direction adaptability (wind speed range of 4.2-14 m s and the wind direction range of ±30°), and mW-scale power output (maximum mean power of 1.33 mW). Finally, the potential of the W-VHNG for self-powered sensing of transmission lines is highlighted through three application strategies. This research provides a new solution for the sustainable harvesting of complex and variable high-entropy energy in transmission lines.