在役复合绝缘子伞裙材料老化研究  

Research on Aging of Shed Materials for In⁃Service Composite Insulators

作　　者：辛力坚 王超 燕宝峰 郑建军 XIN Lijian;WANG Chao;YAN Baofeng;ZHENG Jianjun(Inner Mongolia Power(Group)Co.,Ltd.,Inner Mongolia Electric Power Research Institute Branch,Hohhot 010020,China;Inner Mongolia Key Laboratory of Smart Grid of New-type Power System,Hohhot 010020,China)

机构地区：[1]内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司,呼和浩特010020 [2]内蒙古自治区新型电力系统智能电网企业重点实验室,呼和浩特010020

出　　处：《内蒙古电力技术》2024年第2期44-48,共5页Inner Mongolia Electric Power

基　　金：内蒙古电力(集团)有限责任公司科技项目“极端污秽地区复合绝缘子选型方法及运维策略研究”(2023-5-32)。

摘　　要：选取内蒙古电网不同输电线路多支在役复合绝缘子,利用扫描电子显微镜(SEM)、X射线能谱仪(EDS)、傅里叶红外光谱仪(FTIR)、邵氏硬度计及拉伸试验机等仪器对各系列复合绝缘子高压侧伞裙材料性能进行表征分析。结果表明,随着运行年限的增加,绝缘子伞裙表面粗糙度基本呈逐渐增大趋势,而C元素质量分数和Si-CH3峰面积则随运行时间的增加不断下降;此外,硅橡胶材料的老化对伞裙硬度、拉伸强度及断裂伸长率同样具有显著影响。最后,基于各特征参量测试结果建立寿命预测模型,并初步制订复合绝缘子老化性能判断依据。The author selects multiple in⁃service composite insulators from different transmission lines of Inner Mongolia Power Grid,and make an analysis of the material properties of high⁃voltage(HV)side shed from each series of composite insulators by SEM,EDS,FTIR,Shore durometer and tensile testing machine.The results show that with the increase of the operating time,the surface roughness of the shed shows a gradually increasing trend,while the mass fraction of element C and the peak area of Si-CH3 continuously decrease.In addition,the aging of silicone rubber materials also has a significant impact on the hardness,tensile strength,and elongation at break of sheds.Finally,a life prediction model based on the test results of various characteristic parameters is established,and a basis for judging the aging performance of composite insulators is also preliminarily proposed.

关 键 词：复合绝缘子 伞裙 拉伸强度 老化 硬度 

分 类 号：TM216[一般工业技术—材料科学与工程]