期刊
NANO ENERGY
卷 117, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2023.108911
关键词
Multi-directional wind; High-voltage transmission tower; Triboelectric nanogenerator; Self-powered sensing; Aeolian vibration
This paper introduces a self-powered multi-directional wind-driven triboelectric nanogenerator (SMW-TENG), which efficiently harvests wind energy through optimized structural parameters and response characteristics. A hybrid power supply strategy is proposed to prolong the continuous power supply, and a self-powered ambient weather and multichannel wind vector sensing system is developed to monitor temperature, humidity, wind speed, and direction in real time.
The concentration of abundant wind energy on the high-voltage transmission tower with the feature of high height not only provides a promising solution for powering distributed sensors in smart grid, but also enables a potential feasibility for the real-time sensing of the multi-directional wind to evaluate the transmission line aeolian vibration induced by wind excitation. In this paper, the comprehensive strategy appropriately hybridizes the ingenious integration of a rotating-type TENG for efficient wind energy harvesting and a flapping-type TENG for multi-directional wind vector sensing to establish the self-powered multi-directional wind-driven triboelectric nanogenerator (SMW-TENG). The basic D-TENG and F-TENG in terms of structural parameters and response characteristics are systematically optimized to realize an efficient energy harvesting with the peak power of 3.9 mW, a smooth output in the wind speed of 3.7-16.3 m s(-1) and sensitive response to eight-direction wind speed ranging from 2.6 to 13.5 m s(-1). Hybrid power supply strategy based on collaborative working of UD-TENG as a standby power and LD-TENG as a main power is innovatively proposed to prolong the continues power supply of a Bluetooth temperature and humidity sensor by 70% and 126.7% compared to the single module, respectively. Importantly, the F-TENG equipped with an eight-channel signal acquisition and processing is developed to achieve the multi-directional wind vector information in response to the aeolian vibration. Furthermore, a selfpowered ambient weather and multichannel wind vector sensing system based on the SMW-TENG, a hybrid power supply circuit, an eight-channel signal acquisition circuit and a Bluetooth module is developed to comprehensively realize the real-time monitoring of temperature, humidity, wind speed and direction. The abnormal wire vibration alarm can be realized through monitoring the wind direction angle on the transmission line cross-section, thereby exhibiting a great potential for developing self-powered sensing in the field of smart grids.
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