高压电器2025，Vol.61Issue(9)：18-23,6.DOI:10.13296/j.1001-1609.hva.2025.09.003
GIS盆式绝缘子残余应力分布检测及成像研究
Study on Detection and Imaging of Residual Stress Distribution in GIS Insulating Spacer
摘要
Abstract
Insulating spacer is an important support and insulation structure of GIS.However,the crosslinking reac-tion and cooling shrinkage of epoxy resin compound during the casting process will cause certain residual stress in the insulating spacer which,in case of superposition wiht the operation load,will likely to cause cracking of the insu-lating spacer and seriously threaten reliable operation of GIS equipment.In this paper,an automatic detection and im-aging system for the internal residual stress of the insulating spacer is designed based on the acoustic elastic effect.First,the acoustic elastic coefficients of ultrasonic longitudinal waves at such two frequencies as 2.5 MHz and 1.5 MHz are tested.By compiling the scanning path of the industrial robot arm,the automatic acquisition of the ultra-sonic transmission time of each point on the insulating spacer to be measured is completed,the acoustic elastic equa-tion under dual frequencies is solved to eliminate variable of the structure thickness,the distribution detection and imaging of internal residual stress of insulaing spacer is achieved,which provides a reference for reliability assess-ment of GIS insulating spacer.关键词
GIS/盆式绝缘子/残余应力/声弹性效应/分布成像Key words
GIS/insulating spacer/residual stress/acoustic elastic effect/distribution imaging引用本文复制引用
陈荣,何金,贺春,李松原,赵琦,刘松涛,张涵璞,李进..GIS盆式绝缘子残余应力分布检测及成像研究[J].高压电器,2025,61(9):18-23,6.基金项目
国家自然科学基金项目(51807136) （51807136）
国网天津市电力公司科技项目(KJ22-1-26).Project Supported by National Natural Science Foundation of China(51807136),State Grid Tianjin Electric Power Company Science and Technology Project(KJ22-1-26). （KJ22-1-26）
