基于激光超声的电网支柱瓷绝缘子载荷在线监测  

Online Load Monitoring of UHV Pillar Porcelain Insulator Based on Laser Ultrasound

作　　者：赵洲峰 熊欣睿 罗宏建 邹君文 周桢 鲁旷达 李小英 宋涛[4] 张俊[4] Zhao Zhoufeng;Xiong Xinrui;Luo Hongjian;Zou Junwen;Zhou Zhen;Lu Kuangda;Li Xiaoying;Song Tao;Zhang Jun(Zhejiang Electric Power Boiler&Pressure Vessel Supervision and Inspection Institute Company Limited,Hangzhou 310014,Zhejiang,China;International Campus,Zhejiang University,Haining 314400,Zhejiang,China;State Grid Zhejiang Electric Power Corporation Research Institute,Hangzhou 310014,Zhejiang,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,Hubei,China)

机构地区：[1]浙江省电力锅炉压力容器检验所有限公司,浙江杭州310014 [2]浙江大学国际联合学院,浙江海宁314400 [3]国网浙江省电力有限公司电力科学研究院,浙江杭州310014 [4]武汉大学动力与机械学院,湖北武汉430072

出　　处：《应用激光》2024年第7期155-163,共9页Applied Laser

基　　金：国网浙江省电力有限公司科技资助项目(B311DS210014)。

摘　　要：针对特高压支柱瓷绝缘子载荷的远程带电测量重大需求,构建激光超声载荷测量数值模型,提出基于激光超声同步激励的空气波与表面波的修正算法,开发激光超声的支柱瓷绝缘子载荷在线监测方法与系统,并利用绝缘子弯曲试验进行验证。试验结果表明,该系统可以实现支柱瓷绝缘子超声数据的非接触式采集与分析,解决实际测量过程中光斑间距难以控制的难题,实现了弯曲载荷测量平均误差为16.20%,具有良好的工程应用前景。The Ultra-High Voltage(UHV)pillar porcelain insulator,a critical component in power systems,is prone to brittle fracture due to stress concentration and internal cracks,posing safety risks.To mitigate this,real-time load monitoring of these insulators is imperative.This paper presents a novel online load monitoring system for UHV pillar porcelain insulators utilizing laser ultrasonic technology,coupled with an advanced correction algorithm for air and surface wave interference during synchronous excitation.The theoretical foundation for laser ultrasonic stress detection on porcelain insulators is substantiated through simulation analysis.The hardware and software components of the system have been meticulously designed and developed.Experimental results demonstrate the system′s high efficiency in online monitoring,achieving an average error of 16.20%between measured and actual bending loads.This accuracy meets engineering detection requirements,indicating the system′s promising application potential for enhancing the safety and reliability of UHV power systems.

关 键 词：支柱瓷绝缘子 载荷测量 激光超声 在线监测 

分 类 号：O348.11[理学—固体力学]