特高压直流SF_6气体绝缘穿墙套管绝缘结构设计研究进展  

Research Progress in Insulation Structure Design of UHVDC SF_6 Gas-insulated Wall Bushing

作　　者：李乃一 彭宗仁[2] 许佐明[2,3] LI Naiyi;PENG Zongren;XU Zuoming(State Grid Zhejiang Electric Power Co., Ltd. Research Institute, Hangzhou 310014, China;State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China;China Electric Power Research Institute, Wuhan 430074, China)

机构地区：[1]国网浙江省电力有限公司电力科学研究院,浙江杭州310014 [2]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049 [3]中国电力科学院有限公司,湖北武汉430074

出　　处：《绝缘材料》2019年第5期6-16,共11页Insulating Materials

基　　金：国家高技术研究发展计划(863计划)项目(2014AA051801)

摘　　要：特高压直流穿墙套管作为换流站中连接阀厅和直流场的唯一通道,是承载系统全电压、全电流的核心设备。本文综述了特高压直流SF_6气体绝缘穿墙套管的研发和应用进展,讨论了该类套管的绝缘特性和绝缘结构设计方法,以及国产套管的组成、外绝缘设计和结构形式,并提出了当前绝缘结构设计中需要解决的问题。UHVDC wall bushing is a key equipment which connects valve hall and DC yard in converter station, and it loads total voltage and current. In this paper, the research and application progress of UHVDC SF6 gas-insulated wall bushing was reviewed. The insulation characteristics and insulation structure design mehods of these bushings, and the components, outdoor insulation design and layout of domestic bushings were discussed. The problems need to solved in the design of insulation structure at present were proposed.

关 键 词：特高压直流 穿墙套管 非均匀雨闪 气体放电 表面电荷 绝缘结构设计 

分 类 号：TM854[电气工程—高电压与绝缘技术]