Triboelectric Nanogenerator With the Distributed‐Mass Pendulum for Galloping Energy Harvesting in Transmission Lines

Intelligent monitoring devices are essential for safeguarding power grid security. Traditional battery‐powered sensors, however, suffer from short lifespans and demand frequent maintenance, accelerating the development of self‐powered technologies. Wind‐induced vibrations in transmission lines constitute an underutilized energy source, in which transmission lines galloping attracts particular attention owing to its substantial energy potential. The low‐frequency, broadband characteristics of transmission lines galloping, though, restrict the energy harvesting efficiency of conventional devices. In this article, we propose a triboelectric nanogenerator integrated with a distributed‐mass pendulum (DMP‐TENG) for harvesting galloping energy in transmission lines, aiming to power intelligent monitoring devices. By adjusting the distribution of mass blocks on the pendulum, the system's moment of inertia can be precisely tuned, thereby regulating its resonant frequency and oscillation amplitude to achieve broadband energy harvesting. With optimized mass distribution, the harvesting bandwidth increases from 0.6 to 1.6 Hz, representing a 167% improvement, while an average output power of 0.33 mW is achieved. Furthermore, application experiments validate the practical feasibility of the prototype. This article offers a promising solution to enhance the energy harvesting capacity of transmission lines, providing a reliable power supply for intelligent monitoring systems.