500kV复合绝缘子运行特性分析  

Analysis of Operating Performance for the 500 kV Composite Insulator

作　　者：张福增 宋磊[2] 屠幼萍[3] 许卓[3] 李锐海 王国利 

机构地区：[1]南方电网科学研究院有限责任公司,广州510080 [2]清华大学电机工程与应用电子技术系电力系统及发电设备控制和仿真国家重点实验室,北京100084 [3]华北电力大学高电压与电磁兼容北京重点实验室,北京102206

出　　处：《高电压技术》2012年第10期2536-2541,共6页High Voltage Engineering

基　　金：特高压工程技术(昆明;广州)国家工程实验室开放基金~~

摘　　要：为分析500kV复合绝缘子的运行特性,从而为实验室评价现场运行复合绝缘子的特性和状态提供指导,对5支500kV交流和6支500kV直流复合绝缘子进行了研究,主要包括污秽度测量,憎水性测试、解剖试验、水扩散试验和水煮及陡波试验。在此基础上,比较了交、直流复合绝缘子的积污特性,分析了复合绝缘子劣化特性和运行年限的关系,讨论了不同检测方法的应用情况。结果表明,直流绝缘子比交流绝缘子积污严重,直流绝缘子积污量随运行年限增加显著增加,交流绝缘子无明显变化;劣化特性显著的绝缘子并不是运行年限最长的绝缘子;采用的几种检测方法均能很好地反映复合绝缘子某一方面的劣化特性。To analyze the performance characteristic of 500 kV composite insulators,which could provide reference for evaluating the performance and the status of composite insulators in service,5 pieces of 500 kV AC composite insulators and 6 pieces of 500 kV DC composite insulators were selected to be tested.The detection items included pollution measurement,hydrophobicity test,dissecting test,water diffusion test,water immersion test and steep front impulse test.Based on the tests,the contamination characteristics of the AC and DC insulators were compared and the relationship between insulators＇ operating years and its deterioration were studied.The application of different detection methods was also discussed.The results show that contamination of DC insulators is more serious than that of AC insulators.Moreover,contamination of DC insulators is significantly increased with the operation years,while that of AC insulators has no obvious change.Under the test conditions,there is no obvious relationship between the aging characteristics and the operating years of the tested insulators.Each of the evaluation methods is capable of reflecting a certain aspect of deterioration of composite insulators.

关 键 词：复合绝缘子 检测 评估方法 憎水性 水扩散试验 自然污秽 

分 类 号：TM216[一般工业技术—材料科学与工程]