复合绝缘子的应用及关键技术研究  

Application and Key Technical Study of Composite Insulators

作　　者：关志成[1] 彭功茂[1] 王黎明[1] 贾志东[1] 张若兵[1] 

机构地区：[1]清华大学深圳研究生院,深圳518055

出　　处：《高电压技术》2011年第3期513-519,共7页High Voltage Engineering

基　　金：国家自然科学基金(50777033);国家重点基础研究发展计划(973计划)(2009CB724503)~~

摘　　要：复合绝缘子由于其优异的耐污闪性能越来越广泛地应用到输电线路中,特别是特高压输电线路,目前基本上是采用复合绝缘子。为此首先介绍了复合绝缘子在我国的研制、发展和应用情况,然后针对复合绝缘子在使用中的关键技术问题进行了分析讨论,涉及到的关键技术主要有,断裂和脆断发生的环境及相关原理,人工污秽试验方法中惰性物质、环境温度及迁移时间的选取,伞裙形状中的伞间距及伞伸出对直流污闪电压的影响,红外与紫外技术对复合绝缘子的在线监测等问题。结果表明:惰性物质、环境温度及迁移时间的选取对试验结果影响显著;选取合适的伞间距及伞伸出,可以较大幅度的提高污闪电压;红外及紫外技术在复合绝缘子在线监测方面,效果显著。It is about 20 years for composite insulators application of large scale in electric system in China.Because of its excellent antifilthy spark overability,composite insulators which were the inevitable choice to solve external insulation problem of UHVDC transmission project were used more and more in the transmission lines.The paper firstly introduces the manufacture,development and application of composite insulators in China,then analyzes and discusses the key technical study of the insulator,such as the environment and theory of break and brittle failure happened,test method of artificial pollution that about how to choose inert material,ambient temperature and transfer time,shed parameters of overhang and distance influenced the DC flashover voltage of insulator,infra-red and ultraviolet technique for on-line monitoring etc.The test results showed that inert material,ambient temperature and transfer time have a significant influence on the result;appropriate shed distance and overhang can greatly increased the DC flashover voltage of insulators;infra-red and ultraviolet technique have a remarkable effectiveness on on-line monitoring for composite insulator.

关 键 词：复合绝缘子 应用情况 芯棒断裂 人工污秽试验 伞裙形状 在线监测 

分 类 号：TM216[一般工业技术—材料科学与工程]