摘要
针对输电线路在冬季覆冰期间导线脱冰跳跃时的精确测量需求,研究了一种基于大数据的导线悬垂面摄影测量方法,讨论了基于此技术方案的高速摄影性能及主要算法及便携式脱冰跳跃摄影测量仪的制备方法。根据导线脱冰跳跃时悬垂面的摄影测量数学模型和数据采集模型,通过数据的有效帧的梳状区域连续判定法实现了数据的有效梳理,获得了有效的数据。实验结果表明,基于大数据的摄影测量方法,通过大量数据对本文提出的方法进行学习和训练,得到高速摄影测量方法在悬垂面摄影测量的精度与影像在悬垂面处的空间分辨率基本相当,能很好地捕捉导线在脱冰跳跃情况下的舞动状况,对于导线脱冰跳跃和雷击这类随机短促突发事件的高速影像采集的情况能够得到很好地应用。
In order to meet the accurate measurement requirements of the deicing jump of iced conductor during the winter icing,A research method for photogrammetry of wire overhanging surface based on big data was researched,and the high-speed photographic performance and main algorithms based on this technical solution were discussed,as well as the preparation method of the portable deicing jumping photogrammeter. According to the photogrammetric mathematical model and data acquisition model of the overhanging surface when the wire was de-iced and jumped,the combing region continuous determination method of the effective frames of the data was used to effectively comb the data and obtain valid data. Acorrding to the experimental results,photogrammetry based on big data,the method proposed in the paper was studied and trained through a large amount of data,and the accuracy of the high-speed photogrammetry method on the overhanging surface was basically equivalent to the spatial resolution of the image on the overhanging surface,which can well capture the galloping state of the conductor in the case of the ice breaking and jumping. The galloping condition could be well applied to the high-speed image acquisition of random short-term emergencies such as wire deicing jumping and lightning strikes.
作者
马晓红
吕乾勇
毛先胤
徐舒蓉
王建国
唐敏
MA Xiaohong;LV Qianyong;MAO Xianyin;XU Shurong;WANG Jianguo;TANG Min(Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002 Guizhou,China;Key Laboratory of Ice Prevention&Disaster Reducing of China Southern Power Grid Co.,Ltd.,Guiyang 550002 Guizhou,China;Wuhan University,Wuhan 430079 Hubei,China)
出处
《电力大数据》
2020年第3期40-46,共7页
Power Systems and Big Data
关键词
脱冰跳跃
悬垂面
高速摄影测量
大数据
空间分辨率
ice shedding
overhanging surface
high-speed photogrammetry
big data
spatial resolution
