摘要
研究绝缘子的闪络特性,准确检测绝缘子的闪络位置及强弱,对于保证电力系统的安全可靠运行、减少设备损坏具有重要的意义。针对俄罗斯菲林-6紫外检测图像亮度较暗、检测目标与背景对比度不高的缺点,提出一种基于数学形态学的紫外图象处理方法,该方法综合应用数学形态学中组合结构元素及其方向差异性,依次进行直方图匹配增强、滤波、梯度边界提取等图像处理,提高了图像的信噪比、增强了目标。以绝缘子闪络放电为实例,提取并突出显示图像中的真实放电通道,为进一步分析绝缘子闪络特性提供了重要参考依据,证明了该方法的有效性。
Research on the flashover characteristics of insulators and accurately detecting the location and intensity play an important role to guarantee the safe operation of power systems and reduce damage to the equipment. Owning to the image intensity is darker, and the contrast between the target and background is not high detected by the Russian film-6 ultraviolet imager, an UV image process method based on mathematical morphology is proposed. This method synthetically applies the structure elements and their directional difference, and making histogram matching enhancement, filtering and gradient boundary extracting which can improve the signal to noise ratio of the image and enhance the target. The image of insulator flashover is taken as an example, extracts and reveals the discharge channel outstanding, which provides a reference frame to analyze the flashover characteristics of insulator, the validity of the method is proved.
出处
《电瓷避雷器》
CAS
北大核心
2014年第4期21-25,共5页
Insulators and Surge Arresters
基金
国家高技术研究发展计划(863计划)(编号:2012AA050802)
国家自然科学基金资助项目(编号:51077054)
关键词
绝缘子
闪络
紫外成像
数学形态学
图像处理
insulator
flashover
UV imaging
mathematical morphology
image processing
