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高压电器  2015 

基于曲线拟合的悬式绝缘子串外力破损检测技术

DOI: 10.13296/j.1001-1609.hva.2015.11.019, PP. 116-121

Keywords: 绝缘子串,破损检测,曲线拟合,图像处理,差分法

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Abstract:

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。

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