55电工电气电工电气(2023No.3)工艺与装备作者简介:董雪生(1985—),男,工程师,学士,从事输变站设备、开关柜、绝缘件设计与仿真分析等工作。董雪生(上海安亦极企业发展有限公司,上海200090)摘要:为了研究可分离连接器与套管在不同配合尺寸下的电场分布特性并给出合理的结构设计方案及安装配合尺寸,调研了几种12kV开关柜用可分离连接器及套管的典型结构,对不同配合尺寸及屏蔽方式下电场进行仿真分析。在此基础上,引入了放电概率系数α,判断首先发生放电的位置。结果表明:配合尺寸和屏蔽方式对套管与可分离连接器安装配合后电场分布影响较大,在环氧树脂中埋入金属网作为屏蔽并减小屏蔽网端部距离套管锥度端部的尺寸,增加与套管配合的可分离连接器台阶尺寸,以及可分离连接器采用屏蔽层与绝缘层平齐的屏蔽方式,可以起到均匀电场的作用。关键词:可分离连接器;套管;配合尺寸;屏蔽方式中图分类号:TM216+.5;TM503+.5文献标识码:A文章编号:1007-3175(2023)03-0055-05Abstract:Inordertostudyelectricfielddistributionofseparableconnectorsandbushingsunderdifferentfittingsizes,andtoproposetheirreasonablestructuraldesignschemesandfittingsizes,thepaperdoesresearchontypicalstructuresofseparableconnectorsandbushingsusedinseveral12kVswitchgearsandmakessimulatedanalysisofelectricfieldunderdifferentfittingsizesandshieldingways.Then,thedischargeprobabilitycoefficientαisintroducedtojudgethefirstdischargelocation.Theresultsshowthatfittingsizesandshieldingwayshavegreatimpactonelectricfielddistributionwhenseparableconnectorsareinstalledintobushings.Therefore,torealizethetargetofuni-formelectricfield,thepaperembedsthemetalmeshintotheepoxyresinasalowvoltageelectrode,reducesthesizebetweentheshieldingnetandseparableconnector,increasestheseparableconnectorstepsize,andfinallyadoptstheshieldingwaywhichmakestheshieldinglayerflushtotheinsulatinglayerfortheseparableconnector.Keywords:separableconnector;bushing;fittingsize;shieldingwayDONGXue-sheng(ShanghaiAEGEnterpriseDevelopmentCo.,Ltd,Shanghai200090,China)SimulationAnalysisofElectricFieldAfterInstallingSeparableConnectorsintoBushings可分离连接器与套管装配后电场仿真分析0引言可分离连接器在安装后存...