基于等裕度的60 kV油纸套管纵绝缘优化  

Longitudinal Insulation Optimization of 60 kV Oil-Paper Bushing Based on Equal Margin Design Method

作　　者：刘道生 陈星蓉 赵子明 LIU Daosheng;CHEN Xingrong;ZHAO Ziming(Laboratory of High Voltage and Insulation Technology,School of Electrical Engineering and Automation,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学电气工程与自动化学院高电压与绝缘技术实验室,江西赣州341000

出　　处：《绝缘材料》2020年第10期62-68,共7页Insulating Materials

基　　金：国家自然科学基金资助项目(51767008);江西省自然科学基金资助项目(20192ACBL20016)。

摘　　要：为减少因套管局部放电导致的设备故障问题,以60 kV电压等级的油纸电容套管为研究对象,介绍了等电容与等厚度绝缘结构设计的套管芯子模型,并采用等裕度方法对其纵绝缘结构进行优化。通过有限元仿真计算,对电场分布结果进行了比较。制作了电容芯子等效模型,通过测试验证了计算方法的正确性。结果表明:采用等裕度方法设计的60 kV油纸套管芯子的电场分布更加均匀,局部放电起始电压设计值提升了12.36%。In order to reduce the equipment failure caused by partial discharge of bushing,we chose 60 kV class oil-paper capacitor bushing as the research object,introduced the bushing core models with equal capacitance and equal thickness insulation structure design,and optimized the longitudinal insulation structure by equal margin method.According to finite element simulation calculation,the electric field distribution results were compared.An equivalent model of capacitor core was manufactured,and the correctness of the calculation method was verified by testing.The results show that the electric field distribution of the 60 kV oil-paper bushing core designed by equal margin method is more uniform and the design value of partial discharge inception voltage increases by 12.36%.

关 键 词：油纸电容 有限元 套管结构 等裕度 仿真分析 

分 类 号：TM216[一般工业技术—材料科学与工程]