微型电脑应用

针对目前激光雷达架空输电线测距时存在数据依赖高、对天气条件不敏感等问题，提出一种基于无人机机载激光雷达架空输电线弧垂仿真模型。利用无人机采集架空输电线3D点云数据。提出一个架空输电线弧垂曲线模型，可基于抛物线悬链线方程模拟不同天气条件下输电线形变形状。实验阶段，以中国某省110 kV输电线路为例验证所提方法。实验结果表明，温度的升高导致张力减小和输电线长度的伸长，垂直于输电线的水平张力随着风压的增加而增加。同时，所提模型模拟出的输电线形变与真实情况相比偏度小于1.22%。仿真结果验证了所提模型的有效性，该模型对架空输电线巡检和输电线安全分析的发展提供了一定借鉴作用。

Aiming at the problems of high dependence on data and insensitivity to weather conditions in the current lidar ranging of overhead transmission lines, a simulation model of overhead transmission line sag based on UAV airborne lidar is proposed. The UAV is used to collect 3D point cloud data of overhead transmission lines. A sag curve model of overhead transmission line is proposed, which can simulate the deformation shape of transmission line under different weather conditions based on parabolic catenary equation. In the experimental stage, the proposed method is verified by taking a 110 kV transmission line in a province of China as an example. The experimental results show that the increase of temperature leads to the decrease of tension and the extension of transmission line length, and the horizontal tension perpendicular to the transmission line increases with the increase of wind pressure. At the same time, the skewness of the deformation of the transmission line simulated by the proposed model is less than 1.22% compared with the real situation. The simulation results verify the validity of the proposed model, which provides a reference for the development of overhead transmission line inspection and transmission line safety analysis.