基于曲线拟合的悬式绝缘子串外力破损检测技术  

Suspension Insulator String Damage Detection Technology Based on Curve Fitting

作　　者：黄新波[1] 张菲[1] 

机构地区：[1]西安工程大学电子信息学院,西安710048

出　　处：《高压电器》2015年第11期116-121,127,共7页High Voltage Apparatus

基　　金：西安工程大学控制科学与工程学科建设经费资助(107090811)~~

摘　　要：为了减少因绝缘子串外力破损给输电线路运行带来的严重影响,提高线路运行维护水平,文中提出一种将差分法和曲线拟合法相结合的悬式绝缘子串外力破损检测方法。其以截取的视频流中绝缘子串的单帧图像为研究对象,通过Canny算子提取出绝缘子串的边缘,运用曲线拟合的方法将提取出的边缘拟合成标准的光滑曲线,将提取出的边缘曲线与拟合的标准曲线进行差分,通过差值来判断绝缘子是否处于完好状态。仿真结果表明,该方法较传统的基于背景差分法的绝缘子串破损检测法运行速度更快,且能准确地定位出绝缘子串的破损处。In order to reduce the serious influence the insulator string breakage force on the transmission lineoperation, and to improve the level of line operation maintenance, a kind of damage detection method for the sus-pension insulator string mixed with difference method and curve fitting is proposed in this paper. Single frame im-age intercepted from the insulator string video stream is used as the research object, though the canny operator toextract the edge of the insulator string, and the extracted edge into smooth and standard curve is fitted by fittingmethod, then the difference of the extracted edge and the fitted standard curve is computed through the differentialvalue to judge whether the insulator is in good condition. Simulation results show that this method has a faster run-ning speed than the traditional insulator string broken detection method which is based on the background differ-ence, and can accurately locate the breakage of insulator string.

关 键 词：绝缘子串 破损检测 曲线拟合 图像处理 差分法 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]