超高压输电线路复合绝缘子性能老化评估  

Performance Aging Evaluation of Composite Insulators for EHV Transmission Lines

作　　者：杨跃光[1] 王敩青[1] 徐剑伟[2] 熊志伟 鲁海亮[2] 文习山[2] 杨华 YANG Yue-guang;WANG Xiao-qing;XU Jian-wei;XIONG Zhi-wei;LU Hai-liang;WEN Xi-shan;YANG Hua(China Southern Power Grid EHV Transmission Company,Guangzhou 510663,China;College of Electrical Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]中国南方电网超高压输电公司,广东广州510663 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《水电能源科学》2019年第3期168-171,共4页Water Resources and Power

摘　　要：为及时了解在运复合绝缘子运行状态、系统评估电力网运行可靠性,2016年相关运行单位依据南方电网有关规定对超高压输电线路运行环境较为复杂的复合绝缘子进行抽样检测,测试内容共分为材料性能、电气性能和机械性能三项。测试结果表明,复合绝缘子在镀锌层厚度、水煮后陡波冲击、机械破坏负荷和端部密封性这四方面的性能未随运行年限的增加而出现明显老化;复合绝缘子性能老化主要体现在憎水性、带护套芯棒水扩散、伞裙漏电起痕、芯棒护套粘结性这几个方面,且性能老化程度与绝缘子运行年限表现出一定的正相关性。!In order to timely grasp the operational status of the composite insulators and systematically evaluate the operation stability of the power grid,relevant operating department samples and examines the composite insulators of ultrahigh voltage transmission lines according to the relevant provisions in 2016.The test items include material properties,electrical properties and mechanical properties.The test results show that the performance of the composite insulators in the four aspects of the thickness of zinc coating,steep wave impact after boiled,mechanical failure load and end sealing performance did not significantly deteriorate with the increase of operating years;The aging performance of composite insulators mainly reflected in the four aspects of the hydrophobicity,sheath core rod water diffusion,umbrella skirt creepage,core rod sheath adhesion,and there is a certain positive correlation between the degree of aging performance and insulator operating years.

关 键 词：超高压 复杂运行环境 复合绝缘子 性能老化 运行抽检 状态评估 

分 类 号：TM216[一般工业技术—材料科学与工程]