摘要
弧垂作为输电线路基本结构参数,不仅表明架空输电导线所处的力学状态,又直接影响着电气绝缘安全距离,一直是输电线路在线监测的焦点。该文基于机载激光雷达点云数据和实时环境信息,提出一种架空导线弧垂的实时监测方法。通过结合抛物线构型方程、输电线路状态方程和短时温升计算模型,实现了安装工况、首次激光勘测工况和第二次激光勘测工况3种状态下导线应力、温度和弧垂的转换。此外,基于某500kV实际线路的两次激光勘测弧垂数据和相应的实时环境信息,对弧垂计算过程中涉及的具有平均意义的参数进行修正,结果表明:修正后的参数可有效提升模型的计算精度。
As a basic structural parameter of transmission lines,sag not only reflects the mechanical state of overhead transmission lines,but also directly affects the safety distance of electrical insulation,which has always been the focus of on-line monitoring of transmission lines.In this paper,a real-time monitoring method for overhead line sag is proposed based on airborne LiDAR point cloud data and real-time environmental information.By combining parabolic configuration equation,transmission line state equation and short-term temperature rise calculation model,the transformation of conductor stress,temperature and sag under three conditions of installation condition,first laser survey condition and second laser survey condition is realized.In addition,based on the sag data of a 500kV actual line and the corresponding real-time environmental information,the parameters with average significance involved in the sag calculation process are modified.The results show that the modified parameters can effectively improve the calculation accuracy of the model.
作者
刘静
程洋
操松元
傅毓斐
廖志斌
张东东
张文博
LIU Jing;CHENG Yang;CAO Songyuan;FU Yufei;LIAO Zhibin;ZHANG Dongdong;ZHANG Wenbo(State Grid Anhui Electric Power Research Institute,Anhui Hefei 230000;State Grid Anhui Electric Power Co.,Ltd.,Hefei 230000,China;State Grid Suzhou Electric Supply Company.Suzhou 234000,China;Nanjing Institute of Technology,Nanjing 211167,China)
出处
《中国测试》
CAS
北大核心
2024年第S01期38-43,共6页
China Measurement & Test
基金
国家电网有限公司科技项目资助(5500-202320188A-1-1-ZN)
关键词
无人机
点云数据
弧垂
抛物线构型方程
输电线路状态方程
UAV
point cloud data
sag
parabolic configuration equation
transmission line state equation
作者简介
刘静(1981-),女,安徽巢湖市人,高级工程师,从事架空输电线路运行与检修技术工作。
