典型区域复合绝缘子的微观特性研究  

Study on the Microscopic Characteristics of Composite Insulators in the Typical Areas

作　　者：屠幼萍[1] 梁栋[1] 王璁[1] 王梦丹[1] 魏杰 高海峰[2] 

机构地区：[1]华北电力大学高电压与电磁兼容北京市重点实验室,北京102206 [2]中国电力科学研究院,北京100192

出　　处：《高压电器》2017年第11期9-14,共6页High Voltage Apparatus

摘　　要：复合绝缘子作为输电线路中的重要绝缘设备,其老化问题受到相关部门与学者的广泛关注。为了研究不同环境因素对复合绝缘子老化的影响,文中以4个典型区域的现场运行复合绝缘子为研究对象,对复合绝缘子伞裙材料进行了热刺激电流特性(TSC)测试、红外光谱(FTIR)测试与扫描电镜(SEM)测试,并对不同区域复合绝缘子的微观特性进行比较分析。研究结果表明,不同地区试样的微观特性存在一定的差异。浙江地区试样的老化程度与其他地区相比较高,可能与其盐雾与湿润的环境有关。青海地区试样的老化程度较轻。黑龙江试样的老化程度位于两者之间。而河南试样虽然表面破坏程度与官能团反应程度较高,但其陷阱电荷量并不高。研究结果有助于合理考虑环境因素对运行复合绝缘子的影响,从而为运行维护提供参考。Composite insulators are important insulation equipment for transmission lines, so their aging problem is concerned by the relevant departments and scholars. In order to study the effect of different environmental factors on the aging of composite insulator, in this paper, composite insulators from four typical areas are chosen to do ther real stimulation current（TSC）test, Fourier Transform Infra-Red（FTIR）spectrum test and Scanning Electron Microscopy （SEM）test, and the differences of the composite insulators from different areas are compared. The results show that there are some differences in the microscopic characteristics of samples from different areas. The aging degree of the samples from Zhejiang is higher than that from other areas, which may be related to the salt spray and wet environment. The aging degree of the samples from Qinghai is relatively mild. The aging degree of the samples from Heilongjiang is between the former two areas. The damage degree of surface and functional groups of samples from Henan is higher, but their charge amounts are relatively small. The results are helpful to consider the influence of environmental factors on the running composite insulators, which can provide reference for operation and maintenance.

关 键 词：复合绝缘子 微观特性 典型区域 老化 热刺激电流 

分 类 号：TM216[一般工业技术—材料科学与工程]