基于超声换能器的输电线路舞动监测系统

Transmission Line Galloping Monitoring System Based on Ultrasonic Transducer

舞动监测是深入开展舞动机理、模型分析和防舞设计的基础条件,舞动监测技术及相关设备已在输电线路获得广泛应用,但普遍采用的加速度传感器由于采用二次积分的计算方法,该领域的加速度测量及积分算法存在其固有缺陷,所获取的位移值误差较大;采用的基于视频监测和轨迹提取的舞动监测方法,虽然能有效监测被测点的绝对运动轨迹,但其基于可见光进行视频分析,因此需要较为理想的光学观测环境,无法在夜晚实施,同时还需要被测点与其背景存在较大的色斑差异。因此,为了更加精确以及能在更宽松的环境下监测导线的舞动轨迹,选择超声换能器作为测量基础,论证超声换能器测量特定情况下导线舞动轨迹的可行性。

Galloping monitoring is the basic condition for the further development of galloping mechanism, modelanalysis and anti-galloping design, galloping monitoring technology and related equipment have been widely used intransmission line. But most acceleration transducers have adopted the computing method of quadratic integral whichhas inherent defect, the error value of the displacement is rather big. Galloping monitoring method based on videomonitoring and trajectory extraction, can monitor the absolute movements of the observation point, but its video analy-sis based on visible light, so the ideal optical observation environment is needed, it can not be implemented at night.At the same time, the significantly differences should be exist between the observation point and the background.Therefore, in order to more accurately and can be in a more relaxed environment to monitor the galloping track, ultra-sonic transducers was chose as the basis of measurement, to demonstrate the feasibility of the galloping track of ultra-sonic transducer measurement under specific circumstances.