SF_(6)/N_(2)混合气体在126kV气体绝缘金属封闭开关设备中的应用  

Application of SF_(6)/N_(2) mixture in 126kV gas insulated switchgear

作　　者：戴振 王通德 朱振华 DAI Zhen;WANG TongdeZHU Zhenhua(Jiangsu NARI Hengchi Electrical Equipment Co.,Ltd,Wuxi,Jiangsu 214161;Wuxi Hengchi CHEM Switchgear Co.,Ltd,Wuxi,Jiangsu 214161)

机构地区：[1]江苏南瑞恒驰电气装备有限公司,江苏无锡214161 [2]无锡恒驰中兴开关有限公司,江苏无锡214161

出　　处：《电气技术》2023年第9期60-64,共5页Electrical Engineering

基　　金：江苏南瑞恒驰电气装备有限公司科技项目“混合气体型126kV GIS产品研制”(524647220001)。

摘　　要：在役的大部分气体绝缘金属封闭开关设备(GIS)使用绝缘性能较好的SF6气体作为绝缘介质。为实现“双碳”目标,开展绝缘气体的替代研究以控制SF6气体的使用与排放有助于提升电力设备的环境友好性。为实现SF_(6)/N_(2)混合气体在126kV GIS中的应用,首先确定126kV SF_(6)/N_(2)混合气体型GIS的基本参数,并通过建立各单元的有限元模型进行仿真计算,验证了设计的可行性。型式试验的顺利通过表明,在维持现有GIS结构的前提下,适当混合比及充气压力的SF_(6)/N_(2)混合气体能保证GIS的正常运行。Most gas insulated switchgear(GIS)in service use SF6 with better insulation properties as the insulating medium.For the achievement of carbon peaking and carbon neutrality goals,research on the replacement of insulating gas to control the use and emission of SF6 gas is helpful to improve the environmental friendliness of power equipment.In order to realize the application of SF_(6)/N_(2)mixtures in 126kV GIS,the basic parameters of 126kV SF_(6)/N_(2)mixture GIS are first determined,while the feasibility of the design is verified by establishing the finite element model of each unit.The type test shows that on the premise of maintaining the existing GIS structure,a mixture of SF_(6)/N_(2)with appropriate mixing ratio and inflation pressure can ensure the normal operation of GIS.

关 键 词：六氟化硫(SF_(6))替代 SF_(6)/N_(2)混合气体 绝缘性能 温升性能 力学性能 有限元仿真 

分 类 号：TM595[电气工程—电器] TM213[一般工业技术—材料科学与工程]