550kV SF_6气体绝缘组合电器套管研制  

Development of 550 kV SF_6 gas-insulated switchgear (GIS)’s bushings

作　　者：狄谦[1] 刘之方[1] 李国富[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《中国电力》2010年第10期16-19,共4页Electric Power

摘　　要：介绍550 kV SF6气体绝缘组合电器(GIS)套管的绝缘结构、机械结构和密封结构设计及试验情况。通过建立550 kV SF6气体绝缘GIS套管电场模型及优化设计平台,选择经电场优化的单屏蔽层方案;对套管的结构部件进行有限元校核并选取较大的安全系数;对套管的密封结构选取单道多重密封槽设计;经型式试验验证,产品各项性能指标满足技术规范要求并具有较大的裕度,套管具有良好的技术经济指标。Insulation structure, mechanical structure, tightness structure and test results of 550 kV SF6 gas-insulated switehgear （GIS） ＇s bushings were introduced. Based on 550 kV SF6 GIS bushing electric field model and optimum design, single shield structure was selected. High assurance coefficient for structure parts of bushings was checked by FEM method. Single-multiplex-seal groove cavity was designed for gas tightness of bushings. The type tests indicated that performance indexes of bushings are in concordance with the concerned standard and have a high tolerance. The bushings have good technique and economy indexes as well.

关 键 词：SF6气体绝缘套管 电场计算 单屏蔽结构 

分 类 号：TM216.5[一般工业技术—材料科学与工程]