用于输电线路微风振动监测的自供电风速传感装置

Self-Powered Wind Speed Sensing Device for Breeze Vibration Monitoring of Transmission Lines

高压架空输电线路地处旷野,常年受到环境风的影响,微风振动是导致输电线路损伤的主要原因。基于摩擦-电磁混合发电机的自供电系统提供了一种远距离在线监测环境风速的方法。设计了一种基于摩擦-电磁混合发电机的风速监测装置。配合自行设计的单片机程序,利用风速监测装置对输电线路微风振动的累积持续时间进行了记录和分析。结果表明该装置的峰值功率是54.3 mW,可以通过电源管理电路长时间为中央处理单元、信号处理模块和无线传输模块供电。此外,风速监测装置在3~15 m/s风速范围内可达到的电压频率为7~70 Hz,拟合优度R^(2)=0.996。该工作为利用摩擦纳米发电机技术进行输电线路风振监测提供了一种新的策略,有望长时间在电网中得到应用。

High voltage overhead transmission lines are located in the wilderness and affected by the environmental wind all the year round.Wind vibration is the major cause of transmission line damage.A method of remote on-line monitoring of ambient wind speed was presented based on the self-powered system of friction-electromagnetic hybrid generator.A wind speed monitoring device based on friction-electromagnetic hybrid generator was designed.The cumulative duration of the breeze vibration of transmission lines was recorded and analyzed by using the wind speed monitoring device with the self-designed single-chip computer program.The results shows that the peak power of the device is 54.3 mW and can power the central processing unit,signal processing module and wireless transmission module for a long time through the power management circuit.In addition,the voltage frequency of the wind speed monitoring device can reach 7-70 Hz in the wind speed range of 3-15 m/s,and the goodness of fit R^(2)=0.996.This work provides a new strategy for breeze vibration monitoring of transmission lines by using triboelectric nanogenerator technology,which is expected to be applied in power grid for a long time.