摘要
采用球板电极在不同温度条件下实验研究了油冷式变频电机中油污环境对不同厚度芳纶纸局部放电起始放电电压(PDIV)的影响规律。结果表明:芳纶纸的PDIV随厚度的增加而上升,且受温度影响较大,随着温度的不断升高,PDIV有较大程度的下降;冷却油在常温下能够大幅提升PDIV,在高温时PDIV反而有所降低,可能影响芳纶纸的绝缘性能。因此,采用芳纶纸作为变频电机主绝缘时,为提升绝缘系统绝缘性能需考虑以上特性。
The effect of oil contaminated environment in oil-cooled inverter-fed motor on the partial discharge inception voltage(PDIV)of aramid papers with different thickness was studied at different temperatures using a ball-plate electrode configuration.The results show that the PDIV of aramid papers increases with the increase of thickness and is greatly affected by temperature.With the continuous increase of temperature,the PDIV decreases to a great extent.Cooling oil can significantly increase the PDIV at room temperature,but at high temperature,the PDIV will reduce,which may affect the insulation properties of aramid papers.Therefore,in order to improve the electrical properties of insulation system when aramid paper is used as the main insulation in inverter-fed motor,the above characteristics need to be considered.
作者
陈林
杜玉春
安笑妍
郭厚霖
董涵
刘国栋
王鹏
CHEN Lin;DU Yuchun;AN Xiaoyan;GUO Houlin;DONG Han;LIU Guodong;WANG Peng(College of Electrical Engineering,Sichuan University,Chengdu 610065,China;Yantai Metastar Special Paper Co.,Ltd.,Yantai 264006,China)
出处
《绝缘材料》
CAS
北大核心
2022年第3期67-71,共5页
Insulating Materials
基金
国家自然科学基金资助项目(51977134)。
关键词
变频电机
芳纶绝缘
冷却油液
绝缘系统
局部放电
inverter-fed motor
aramid insulation
cooling oil
insulation system
partial discharge
