高海拔多山地区架空输电线路高密点云数据获取方法研究及应用  

Research and application of high-density point cloud data acquisition method for overhead transmission lines in high-altitude and mountainous areas

作　　者：杨刚[1] 吕宝雄[1] 杨振胤 宁春晖 王明[1] 雷尧 田毅 YANG Gang;LBaoxiong;YANG Zhenyin;NING Chunhui;WANG Ming;LEI Yao;TIAN Yi(Power China Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065

出　　处：《测绘通报》2024年第10期157-162,共6页Bulletin of Surveying and Mapping

摘　　要：为解决高海拔多山地区有人直升机、复合翼无人机作业相对航高较高、易受侧风影响、点云稀疏的痛点,本文提出了一种“仿塔飞行”架空输电线路三维激光扫描点云数据获取方法,优化了传统的“仿地飞行”方式,对西藏藏中联网某500 kV超高压架空输电线路进行了点云数据获取,经数据处理及分析,点云数据体素密度大,空间位置精度高。试验结果表明,大载重多旋翼无人机在高海拔多山地区进行“仿塔飞行”作业,在降低作业风险的同时,所获取的点云数据密度高、噪声小,且金具和导线微部特征明显;同时,该方法具有机动性高、稳定性强、作业风险低的优势,为架空输电线路精细化自主巡检及国家电网智慧化应用提供了支撑。In order to solve the problem that manned helicopters and compound wing UAVs in high altitude and mountainous areas operate at high relative altitude,are vulnerable to crosswind and have sparse point clouds,this paper proposes a method to obtain three-dimensional laser point cloud data of overhead transmission lines by “tower imitation flight”,optimizes the traditional “ground imitation flight” mode,and obtains point cloud data of a 500 kV ultra-high voltage line of Shannan in Tibet.After data processing and analysis,the obtained point cloud data has a high voxel density and high spatial positional accuracy.The experimental results show that the high-capacity multi rotor aircraft conducting “tower imitation flight” operations in high-altitude and mountainous areas not only reduces operational risks,but also obtains high point cloud data density,low noise,and obvious micro characteristics of hardware and wires.At the same time,this method has the advantages of high maneuverability,strong stability,and low operational risks,providing support for the fine autonomous inspection of overhead transmission lines and the intelligent application of the State Grid.

关 键 词：高海拔多山 点云体素密度 激光雷达 仿塔飞行 双航线 

分 类 号：P23[天文地球—摄影测量与遥感]