Power towers are the most basic equipment of the transmission line. Various weather or terrain conditions can cause damage to transmission lines such as wear, corrosion, strand breakage, resulting in deformation or tilting of the tower, which may cause serious accidents such as regional power outages if not repaired and inspected in time. Considering the difficulty, low efficiency and low accuracy of traditional measurement methods, an accurate measurement method of power tower tilt rate based on UAV LiDAR point cloud is proposed. This method uses the scattered 3D laser point cloud of power tower to calculate the tower centerline by fitting the tower body structure, so as to calculate the tilt rate. The measurement error sources and application conditions of this method are discussed. The application in transmission line detection proves the effectiveness and correctness of this method. To verify the effectiveness of the method, the paper selects 6 types of towers, 3 of each, 18 in total, to analyze the influence of point cloud density to the tilt rate measurement method, and calculate the accuracy of the method. The relative error of the calculation of the tilt rate is better than 0.7°, proves the validity and correctness of this method.
LU Zhumao, GONG Hao, JIN Qiuheng, HU Qingwu, LI Jiayuan
. Tilt Rate Measurement of Power Tower Based on UAV LiDAR Point Cloud[J]. Journal of Applied Sciences, 2022
, 40(3)
: 389
-399
.
DOI: 10.3969/j.issn.0255-8297.2022.03.003
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