纳米Al_2O_3改性变压器绝缘纸性能的研究  

Insulating properties of insulation paper modified by nano-Al_2O_3 for power transformer

作　　者：廖瑞金[1] 吕程[1] 吴伟强[1] 梁宁川[1] 杨丽君[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电力科学与技术学报》2014年第1期3-7,共5页Journal of Electric Power Science And Technology

基　　金：中央高校基本科研基金(CDJZR12110018)

摘　　要：为了研究纳米Al2O3改性绝缘纸的绝缘性能,实验室制备了含不同质量分数的纳米Al2O3绝缘纸手抄片,并对真空浸油后的绝缘纸性能进行了测试。结果表明在一定的质量分数内纳米Al2O3改性后的绝缘纸的工频击穿场强得到较大的提高,在质量分数为1%时,工频击穿场强提高了12.75%,绝缘纸的抗张强度增加了14.13%;在1%的添加量内绝缘纸的介电常数、介电损耗都随纳米Al2O3含量的增加而减小。This paper describes the insulating properties of insulation paper composited with nano-Al2 O3 filler.The hand-sheets of insulating paper with different mass fraction of nano-Al2 O3 were prepared,and the performance of these hand-sheets which were immersed in oil under vacuum condition was tested.Results showed that the power frequency breakdown field of these hand-sheets containing different mass fraction of nano-Al2 O3 was greatly improved,when containing 1% nano-Al2 O3 the breakdown field increased by 20.83%,the tensile strength increased by 14.13%.When the mass fraction of nano-Al2 O3 was no more than 1%,the dielectric constant,the dielectric loss and the electric conductivity decreased with the mass fraction increase of nano-Al2 O3 .

关 键 词：绝缘纸 纳米 AL2O3 工频击穿场强 介电常数 介电损耗 NANO-AL2O3 

分 类 号：TM73[电气工程—电力系统及自动化]