复合绝缘子界面光纤植入方法与界面性能试验  

Implantation Method of Optical Fiber over the Interface of Composite Insulator and Interface Performance Experiment

作　　者：郝艳捧[1] 韦杰 黄磊 潘锐健 阳林[1] 许文荣 洪文波 HAO Yanpeng;WEI Jie;HUANG Lei;PAN Ruijian;YANG Lin;XU Wenrong;HONG Wenbo(School of Electric Power,South China University of Technology,Guangzhou,Guangdong 510641,China;CSG Digital Grid Research Institute Co.,Ltd.,Guangzhou,Guangdong 510663,China;CSG Electric Power Research Institute Co.,Ltd.,Guangzhou,Guangdong 510663,China;CYG Insulator Co.,Ltd.,Dongguan,Guangdong 523128,China)

机构地区：[1]华南理工大学电力学院,广东广州510641 [2]南方电网数字电网研究院有限公司,广东广州510663 [3]南方电网科学研究院有限责任公司,广东广州510663 [4]长园高能电气股份有限公司,广东东莞523128

出　　处：《广东电力》2022年第4期71-79,共9页Guangdong Electric Power

基　　金：国家自然科学基金委员会国家电网有限公司智能电网联合基金重点项目(U1766220)。

摘　　要：复合绝缘子运行状态检测是电网安全运行的重要保障之一,为此,分别采用环氧树脂胶(epoxy resin,ER)和室温硫化硅橡胶(room temperature vulcanized silicone rubber,RTV)作为光纤粘接剂,在护套芯棒界面植入刻录光栅的光纤,制得光纤复合绝缘子,分别记为ER光纤复合绝缘子和RTV光纤复合绝缘子。进行改进水扩散试验、泄漏电流测量和扫描电子显微镜(scanning electron microscope,SEM)试验,用界面泄漏电流和微观图像分析界面性能。结果表明,ER光纤复合绝缘子的粘接层有气泡且存在界面缺陷,界面性能不满足标准GB/T 19519—2014要求;水煮100 h的RTV光纤复合绝缘子的界面泄漏电流为0.006 mA,满足标准要求;水煮200 h内RTV光纤复合绝缘子的界面泄漏电流与常规复合绝缘子相同,各界面未出现缺陷;RTV光纤复合绝缘子的界面性能优于ER光纤复合绝缘子。所做工作为复合绝缘子植入光纤光栅监测其运行状态提供了制备方法并验证了界面性能。Detection of the operating conditions of composite insulators is critical to guarantee the safety of the power grid.The optical fibers with fiber Bragg grating(FBG)are embedded over the interface between the housing and core using the epoxy resin(ER)and room temperature vulcanized silicone rubber(RTV)as adhesives,and then,the composite insulators with embedded FBG(CIEF)are produced,called CIEF-ER and CIEF-RTV.In addition,the modified water diffusion test,leakage current measurement and scanning electron microscope(SEM)test are performed for analyzing interface properties by interface leakage current and microscopic images.The results show that there are bubbles and interface failures in CIEF-ER,and it can’t satisfy the requirements in GB/T 19519.After a boiling time of 100 h,the interface leakage current of CIEF-RTV is 0.006 mA which satisfies the standard requirements.Within a boiling time of 200 h,the interface leakage current of CIEF-RTV is equal to that of the normal composite insulator,and there are no interface failures in CIEF-RTV.The interface performance of CIEF-RTV is superior to that of CIEF-ER.This paper provides a manufacturing method for monitoring conditions of composite insulators by embedding the optical fibers with FBG and verifies the interface performance as well.

关 键 词：光纤布拉格光栅 复合绝缘子 植入方法 界面泄漏电流 界面微观形貌 

分 类 号：TM216.3[一般工业技术—材料科学与工程] TM85[电气工程—电工理论与新技术]