超—特高压长串瓷绝缘子温度分布曲线拼接方法  

Temperature distribution curve splicing method for EHV-UHV long string porcelain insulators

作　　者：周学明 尹骏刚 胡丹晖 王森林 张睿清 朱广飞 姚建刚[2] ZHOU Xueming;YIN Jungang;HU Danhui;WANG Senlin;ZHANG Ruiqing;ZHU Guangfei;YAO Jiangang(Electric Power Science Research Institute, State Grid Hubei ELectric Power Co., Ltd., Wuhan 430077, China;College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;HDHL Electrical and Information Technology, Co., Ltd., Changsha 410205, China;School of Electrical and Imformation Engineering, Zhengzhou University, Zhengzhou 450001, China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [2]湖南大学电气与信息工程学院,湖南长沙410082 [3]湖大华龙电气与信息技术有限公司,湖南长沙410205 [4]郑州大学电气与信息工程学院,河南郑州450001

出　　处：《电力科学与技术学报》2022年第3期199-205,共7页Journal of Electric Power Science And Technology

基　　金：国家电网有限公司总部科技项目(52153219000F)。

摘　　要：红外热像检测法在瓷绝缘子低零值诊断领域拥有独特的优越性。但由于超—特高压瓷绝缘子串长度可达10 m以上,常用工业热像仪—机载镜头难以清晰地拍摄超—特高压瓷绝缘子全串红外图谱,对基于全串温度特征的劣化智能诊断造成了严重困难。针对此现实难题,提出一种基于加权数据融合的双段温度曲线拼接方法。本方法避免常规红外图像拼接方法存在的目标缺失问题,且相比于舍入拼接、中点拼接等曲线拼接方法具有较高的拟合准确性。以1000 kV绝缘子串为例,阐明所提曲线拼接方法的基本算法和流程;以500 kV绝缘子串为例,进行多种曲线拼接方法的对比研究,分析验证所提方法的有效性与可行性。The infrared thermal imaging detection method has unique advantages inthe diagnosis of low/zero-valued porcelain insulators.However,anEHV/UHV porcelain insulator string is generally too long(even 10 meters or above)to be entirely displayed in a single infrared imageshotbyan industrial handheld/airborne thermal camera,which causes serious difficulties to the intelligent diagnosis of deterioration based on the whole string temperature characteristics.To solve this problem,this article proposes a double-segmenttemperature curve splicing method based on weighted data fusion.This methodcan solve the problems of target missing byapplying general infrared image splicingtechnology,and can obtainhigher fitting accuracy compared with curve splicing methods such as rounding and midpoint splicing.The basic algorithm and process of the proposed curve splicing method are illustrated through an example ofa 1000 kV insulator string.A comparative study of various curve splicing methods is carried out by taking a 500 kV insulator string into account.Therefore,the effectiveness and feasibility of the proposed method are verified.

关 键 词：超—特高压 长串瓷绝缘子 温度分布曲线 曲线拼接 

分 类 号：TM93[电气工程—电力电子与电力传动]