高电压技术2011，Vol.37Issue(8)：1961-1966,6.
采用图像处理技术的输电线路导线弧垂测量
Measurement of Transmission Lines Conductor Sag Using Image Processing
摘要
Abstract
The safe operation of transmission lines is greatly influenced by conductor sag, its size must be in the range of safety, and it is necessary that an effective method of monitoring wire line should be put forward. Conse- quently, the conductor sag is calculated automatically using video image processing technology which is useful and reliable. When the conductor sag is beyond the normal range, an alarm is sent to some managers who can adopt some useful methods to avoid disasters at all times. Some images which will be studied are obtained by the video mo- nitoring system of transmission lines, the image preprocessing are made by camera calibration, image＇s gray level transformation image smoothing , which are important in the process of extraction of wire. If the camera calibration is made, the impact of distortion of the camera cannot be eliminated, likewise, image smoothing can abate noise which may be taken for useful information in the process of extraction of wire. Unfortunately, this extracted wrong information maybe lead directly to the result of wrong lowest point. The Harris interest point extraction method is used to realize characteristic extraction of images, by which the lowest point of sag and fittings are found out, and the actual sag is obtained in world coordinate system by coordinate transformation. Finally, the video of NO. 500 tower of UHV transmission lines is processed and analyzed, and the conductor sag is 9. 1847 m which is in a safe range. Compared with the actual measurement, the relative error of sag is 0.6%, which is in the range of error tol- erance. This method can precisely be used to measure conductor sag and the operation is simnle and reM-time关键词
输电线路/导线弧垂/图像处理技术/实时监测/视频监控装置/Harris角点提取方法Key words
transmission lines/conductor sag/image processing technology/real-time monitoring/equipment of videomonitoring/Harris interest points extraction method分类
信息技术与安全科学引用本文复制引用
黄新波,张晓霞,李立涅,罗兵..采用图像处理技术的输电线路导线弧垂测量[J].高电压技术,2011,37(8):1961-1966,6.基金项目
国家重点基础研究发展计划（973计划） （）
中国博士后科学基金 （）
·中国博士后基金 （）
陕西省重大科技专项 （）
陕西省教育厅产业化中试项目（20LOJC08）. （）
