基于张力测量的输电线路导线舞动在线监测系统

On-line monitoring system of transmission line galloping based on tension measurement

本文依据输电线路舞动时导线张力变化的模型,计算了其水平分量和竖直分量的变化值,研制了一套可在线测量导线舞动的监测系统。基于导线机械结构,设计出了适应于线路测量的压力传感器;通过A/D转换,输出张力变化的数字信号;基于ZigBee无线传输技术,实现导线张力的在线监测。最后通过某线路对比测试,证明该测量系统可有效地实现输电线路的舞动测量。当风速大于6.7m/s时,导线舞动幅值与风速呈现正相关关系,直到风速为12m/s时,舞动达到最大值6.1m;随着风速进一步增大,导线舞动幅值呈现震荡趋势。

Based on the model of tension variation in transmission line,the paper calculates the change in the horizontal component and the vertical component and develops on-line monitoring system of transmission line galloping.Based on conductor structure,the pressure sensor adapted to line measurement is designed.The system exports digital signal of tension variation through A/D transformation.Based on ZigBee wireless transmission technology,the function of tension variation is realized.Finally through certain comparison test of transmission line,it is proved that the measurement system can effectively implement the transmission line galloping.When the wind speed is greater than6.7 m/s,the galloping.amplitude of conductor is positively correlated with the wind speed.When the wind speed is12 m/s,it reaches a maximum of 6.1 m.As the wind speed increases,the amplitude of the wire is oscillating.