40.5 kV空气绝缘开关柜穿墙套管关键技术研究  

Research on Key Techniques of Wall Bushing in 40.5 kV Air-insulated Switchgear

作　　者：张卓 苏迪[2] 陈志刚[2] 丁同奎 ZHANG Zhuo;SU Di;CHEN Zhigang;DING Tongkui(Stated Power Grid Henan Power Company,Zhengzhou 450018,China;Stated Grid Zhengzhou Power Company,Zhengzhou 450052,China)

机构地区：[1]国网河南省电力公司,郑州450018 [2]国网郑州供电公司,郑州450052

出　　处：《高压电器》2020年第11期57-64,共8页High Voltage Apparatus

摘　　要：穿墙套管是40.5 kV空气绝缘开关柜的核心零部件之一,其绝缘性能严重影响了整柜的绝缘寿命。影响穿墙套管绝缘性能的因素不仅有外形尺寸、伞裙结构、双屏蔽设计等结构设计,还涉及到制作套管的环氧树脂材料性能,特别是耐电痕性、屏蔽网的材料选择及加工工艺、套管的选型、安装工艺和运行环境等多种因素。目前,针对40.5 kV穿墙套管进行了许多涉及故障分析、结构设计和电场优化等的技术研究,但对诸如结构设计、模具制造、材料造型、制造过程工艺、安装和运行环境等的全面研究相对较少。因此,文中从影响套管运行可靠性的上述多种因素进行综合研究,为确保套管的安全可靠运行提供有益的技术参考。Wall bushing is one of the core components of 40.5 kV air-insulated switchgear,and its insulation perfor-mance determines the insulation level of the whole cabinet.The key technologies of the wall bushing are not only the structural design of the external dimensions,umbrella skirt structure,double shielding design,but also the perfor-mance of the epoxy resin material that makes the bushing,especially the hydrophobicity and tracking resistance,and the selection of the shielding mesh material and various factors such as processing technology,mold structure,production process,selection,installation process and operating environment.At present,there are many technical researches on the 40.5 kV wall bushing,involving the failure analysis,structural design and electric field optimiza-tion of the bushing.Comprehensive researches such as structural design,mold structure,material selection,produc-tion process,selection,installation and the operating environment are still rare.Therefore,the paper conducts a comprehensive study from the above-mentioned key technologies of bushing to ensure its safe and reliable operation.

关 键 词：40.5 kV开关柜 双屏蔽套管 选型和安装 电场仿真 

分 类 号：TM591[电气工程—电器] TM216.52[一般工业技术—材料科学与工程]