电晕老化对纳米复合PI薄膜介电性能的影响  

Effect of Corona Aging on Dielectric Properties of Nanocomposite PI Thin Films

作　　者：张良 张舒萌 陈亦杰 刘道生[4] ZHANG Liang;ZHANG Shumeng;CHEN Yijie;LIU Daosheng(Chang′an Hunan New Energy Technology Co.,Ltd.,Yiyang 413000,China;Hunan Nonferrous Environmental Research Institute Co.,Ltd.,Changsha 410125,China;Guangfeng Cigarette Factory,Jiangxi China Tobacco Industry Co.,Ltd.,Guangfeng 334600,China;Jiangxi University of Science and Technology,Ganzhou 341099,China)

机构地区：[1]长安湖南新能源科技有限公司,湖南益阳413000 [2]湖南有色环保研究院有限公司,湖南长沙410125 [3]江西中烟工业有限责任公司广丰卷烟厂,江西广丰334600 [4]江西理工大学,江西赣州341099

出　　处：《湖南电力》2024年第4期47-51,共5页Hunan Electric Power

基　　金：国家自然科学基金项目(5176070081)。

摘　　要：高温超导非晶合金变压器作为低温运行设备具有节能降耗的功能。选择耐低温的聚酰亚胺(PI)薄膜为高温超导非晶合金变压器主绝缘材料,改进PI薄膜的制备工艺,搭建电晕老化系统,对PI薄膜进行电晕老化预处理。对经电晕老化预处理后的薄膜的介电特性进行研究,发现液氮环境中电晕老化薄膜的介质损耗角正切值要低于常温环境,在质量分数小于或等于5%时纳米粒子填充PI薄膜的介质损耗角正切值小于处理前薄膜的质损耗角正切值。High temperature superconducting amorphous alloy transformers,as low-temperature operating equipment,have energy-saving and consumption reducing functions.The low-temperature resistant polyimide(PI)film is selected as the main insulation material for high-temperature superconducting amorphous alloy transformers,the preparation process of PI film is improved,a corona aging system is built,and corona aging pretreatment on PI film is performed.A study is conducted on the dielectric properties of films pre-treated with corona aging,and it is found that the dielectric loss tangent of films pre-treated with corona aging in liquid nitrogen environment is lower than that in room temperature environment.When the mass fraction is less than or equal to 5%,the dielectric loss tangent of PI films filled with nanoparticles is smaller than that of the films before treatment.

关 键 词：高温超导 电晕老化 PI薄膜 液氮 击穿场强 

分 类 号：TM851[电气工程—高电压与绝缘技术]