固体电介质空间电荷研究进展  

Review of Research on Space Charge in Solid Dielectrics

作　　者：周远翔[1] 王宁华[1] 王云杉[1] 孙清华[1] 梁曦东[1] 关志成[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《电工技术学报》2008年第9期16-25,共10页Transactions of China Electrotechnical Society

基　　金：教育部新世纪优秀人才支持计划(NCET-04-0095);国家自然科学基金(NSFC50437030;NSFC50277023;NSFC50347010)资助项目

摘　　要：随着空间电荷测量技术在近30年的巨大进步,固体电介质空间电荷研究成为国际研究热点。本文论述了固体电介质空间电荷检测技术从有损发展到无损的过程,分析对比了目前应用较普遍的压力波法和电声脉冲法的原理及特点,介绍了国内空间电荷测量技术研究的发展特点。在此基础上,从预电压效应、形态效应、空间电荷包现象、空间电荷的动态测量等方面论述了空间电荷效应对电介质电气性能的综合影响,对利用空间电荷进行固体电介质陷阱深度等性能参数的研究进行了探讨,强调了空间电荷在电介质材料的开发和评估中的重要作用以及不同应用领域对空间电荷特性的不同要求。指出空间电荷测量技术的进步为固体电介质的研究提供了新的有力手段,但仍需更多的深入研究,以完善电介质理论和促进空间电荷的工程应用。With great progress of space charge measurement technologies in the last three decades, lots of researches are focused on space charge in solid dielectrics. The space charge measurement technology for solid dielectrics has developed from destructive ways to non-destructive ways. Pressure wave propagation method and pulsed electro-acoustic method are two kinds of most popular methods nowadays. Theories and features of these two methods are compared and analyzed. Development of space charge measurement technologies in China is introduced. Based on above reviews, the influences of space charge effects on electrical properties are reviewed by prestressing effects, morphology effects, space charge phenomena and space charge dynamics, etc. Studies of some features of solid dielectrics by using space charge, such as trap depth, are discussed. The important role of space charge in developments and evaluations is emphasized. It＇s also emphasized that different space charge characteristics are needed for applications in different areas. Progresss of space charge measurement technology provide new powerful ways for researches on solid dielectrics. However, more detail work should be carried out to improve dielectric theories and industrial applications of space charges.

关 键 词：空间电荷 固体电介质 预电压 形态 陷阱深度 

分 类 号：TM215[一般工业技术—材料科学与工程]