Triboelectric–electromagnetic hybridized module for energy harvesting of power transmission lines galloping and self-powered galloping state monitoring

Compact, robust, and regulated-output hybrid generators for magnetic energy harvesting and self-powered sensing applications in power transmission lines

“…However, several challenges, including inadequate output power, device damage resulting from high current magnetic core saturation, current fluctuations that can easily harm load components, and low-current dead zones, hinder the broader adoption of CT energy harvesters. Recently, advanced mechanical energy harvesting technologies like TENGs, [12][13][14][15][16][17][18][19][20][21] PENGs, [22][23][24][25] and EMGs, 14,15 converting wind and vibration energy around power transmission lines into electrical energy, demonstrate compelling advantages, such as high power density, lightweight, high current impact resistance, and low cost making them highly desirable solutions.…”

“…For instance, Hu et al 20 innovated a highly efficient TENG device that harvests vibration energy from power transmission lines, generating 4.31 mW output power at 4 Hz frequency and mitigating wind-induced vibrations effectively. Gao et al 15 developed a self-powered power transmission line galloping sensor using hybrid TENG and EMG devices, generating 16.7 mW output power at 1.7 Hz galloping frequency, facilitating real-time monitoring of power transmission line galloping. However, mechanical fatigue and random wind/vibration challenge the long-term use of these mechanical energy harvesters due to poor stability, limited lifespan, and difficult-to-utilize disorderly electrical energy output.…”

Multi-frequency piezoelectric vibration energy harvesters powered sensing in power grid transformer

“…To ensure the sensor can maintain long-term stable operation, it is very important to solve the problem of sustainable power supply. Energy harvesting technology is the mainstream solution of self power supply [1], such as harvesting electric [2] and magnetic eld energy [3] from power lines, and harvesting solar energy [4] and wind energy [5] from outdoor environment. However, the transformer oil tank is lled with oil and equipped with electromagnetic shielding.…”

Multi‐Mode Vibrational Triboelectric Nanogenerator for Broadband Energy Harvesting and Utilization in Smart Transmission Lines

“…[35] Additionally, Gao et al proposed a triboelectric-electromagnetic hybridized generator for harvesting the galloping energy from transmission lines and monitoring their galloping state. [36] Notably, the vibration frequency and amplitude range of transmission lines are different in vertical and horizontal directions. However, it is difficult for the current research to achieve a broadband response for vibration energy harvesting in both directions simultaneously.…”