首页 | 官方网站   微博 | 高级检索  
     

考虑环境相对湿度和污秽度的零值绝缘子红外检测方法
作者姓名:陶玉宁  方春华
作者单位:三峡大学电气与新能源学院, 湖北 宜昌 443002
基金项目:国家自然科学基金资助项目(51807110)
摘    要:零值绝缘子红外检测方法因精准、高效、安全等优点得以广泛应用,但其测量结果易受环境相对湿度和污秽度影响。为此,文中首先建立污秽绝缘子串电-热-流场耦合模型,分析零值绝缘子位置、环境相对湿度和污秽度对绝缘子串温度分布的影响;然后提出一种基于相邻温升差的零值绝缘子红外检测方法,并进行试验验证。结果表明:零值的存在会使绝缘子串连续性马鞍型温度分布遭到破坏;绝缘子离回转中心轴越远,温升越小,反之越大,最大温升出现在铁脚与下表面连接处;随着环境相对湿度和污秽度的增加,绝缘子串的整体温升逐渐增加,零值绝缘子与正常绝缘子温升差逐渐变大。试验结果证明了所提方法用于现场零值绝缘子检测的可行性和有效性。

关 键 词:零值绝缘子  相对湿度  温度分布  污秽度  多物理场  红外检测
收稿时间:2021/8/21 0:00:00
修稿时间:2021/11/17 0:00:00

Infrared detection method of zero value insulator considering relative humidity and pollution degree
Authors:TAO Yuning  FANG Chunhua
Affiliation:College of Electrical Engineering and New Energy, China Three Gorges University, Yichang 443002, China
Abstract:Zero-value insulator infrared detection method is widely used with the characteristics of precision, efficiency and safety, but its measurement results are easily affected by the relative humidity and pollution degree of the environment. The coupling model of electric-thermal-flow field of polluted insulator string is established, and the influence of zero value insulator position, environmental relative humidity and pollution degree on the temperature distribution of insulator string is analyzed. Then, an infrared detection method of zero value insulator based on adjacent temperature rise difference is proposed and verified by experiments. The results show that the continuous saddle temperature distribution of insulator stringcanbe destroyed because of zero value. The farther the insulator is from the rotating center shaft, the lower the temperature rise is, and vice versa. The maximum temperature rise appears at the connection between the iron foot and the lower surface. With the increase of environmental relative humidity and pollution degree, the overall temperature rise of insulator string gradually increases, and the temperature rise difference between zero value insulator and normal insulator gradually increases. The experimental results show that it is feasible and effective for the zero-value insulator detection in field with this method.
Keywords:zero value insulator  relative humidity  temperature distribution  pollution degree  multiphysics  infrared detection
本文献已被 维普 等数据库收录!
点击此处可从《》浏览原始摘要信息
点击此处可从《》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号