基于激光点云的三维实景张力放线动态过程模拟  

Simulation of Dynamic Process of 3DRealistic Tension Release Based on Laser Point Cloud

作　　者：胡锦军 方春华[1] 王强 吴军 李小来 路雯棋 刘家良 Hu Jinjun;Fang Chunhua;Wang Qiang;Wu Jun;Li Xiaolai;Lu Wenqi;Liu Jialiang(College of Electrical and New Energy,Three Gorges University,Yichang 443002,Hubei,China;State Grid Hubei Ultra-High Voltage Company,Wuhan 430000,Hubei,China;State Grid Hubei Electric Power Co.,Ltd.UHV Company Yichang Operation and Maintenance Branch,Wuhan 443000,Hubei,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]国网湖北省超高压公司,湖北武汉430000 [3]国网湖北省电力有限公司超高压公司宜昌运维分部,湖北宜昌443000

出　　处：《应用激光》2024年第10期157-169,共13页Applied Laser

基　　金：国家自然科学基金资助(51807110)。

摘　　要：针对输电线路张力放线施工过程中存在的安全隐患以及各种碰撞问题,提出一种基于激光点云的输电线路张力放线施工流程模拟方法。首先利用机载激光雷达采集输电线路施工现场的三维点云数据,使用归一化高程阈值滤波算法分割点云数据得到地面点和非地面点,根据点云空间维度特征粗提取杆塔点;然后通过使用改进的K-Means算法对体元中心进行聚类,实现对单个输电杆塔点云高精度提取;根据激光点云采用BIM技术对目标设备及施工环境进行逆向建模,搭建施工现场数字化三维实景模型;最后利用虚拟样机技术建立输电线路三维实景张力放线系统,模拟施工现场张力放线动态过程,实现施工过程控制、安全勘探以及危险点分析。结果表明,该方法能够精确有效地模拟现场张力放线施工流程,数值误差均在5%以内,可为张力放线精准施工、过程控制以及安全勘测提供可靠的数据支撑,具有一定的工程价值。Aiming at the safety hazards and various collision problems in the construction process of transmission line tension release,this paper proposes a simulation method of transmission line tension release construction process based on laser point cloud.Firstly,the 3Dpoint cloud data of the transmission line construction site is collected by airborne LiDAR,and the normalized elevation threshold filtering algorithm is used to segment the point cloud data to obtain ground and non-ground points,and the tower points are coarsely extracted according to the spatial dimensional features of the point cloud;then the point cloud of a single transmission tower is extracted with high precision by using the improved K-Means algorithm to cluster the center of the body elements;according to the laser point cloud,the laser point cloud is used to BIM technology is used to reverse model the target equipment and construction environment to build a digital 3Dreal-world model of the construction site;finally,the virtual prototype technology is used to establish a 3Dreal-world tension release system for transmission lines to simulate the dynamic process of tension release at the construction site and realize the construction process control,safety exploration and hazard point analysis.Results demonstrate that this method can effectively and accurately simulate the tension release construction process on-site with a numerical error within 5%.This provides reliable data support for precise construction,process control,and safety survey of tension release,indicating its significant engineering value.

关 键 词：激光点云 输电线路 K-MEANS算法 BIM技术 张力放线 安全勘测 

分 类 号：TM752[电气工程—电力系统及自动化]