高电压技术2012，Vol.38Issue(2)：393-399,7.
±1100kV直流输电工程换流变压器阀侧套管的设计
Bushings Design of Converter Transformer＇s Valve Side of UHVDC Transmission Project
张学成 1檀金华 1牛万宇 1潘良胜 1李灿1
作者信息
摘要
Abstract
On the basis of IEC GB/T 22674—2008 standard ＂Bushings for d.c.application＂ and the technical specifications of ＂±1 100 kV UHVDC transmission project equipment development specification for converter transformer＂ issued by the State Grid Corporation in May 2011,we investigated the structure type,external insulation,performance and key technology of the bushings of converter transformer＇s valve side of the Zhundong-Chongqing ±1 100 kV UHVDC transmission project.The results show that,due to the complex structure of bushings of converter transformer＇s valve side,it is better to adopt filling SF6-type,due to strict insulation level of the bushings,it is necessary to increase specification ratios as follows： for the DC voltage withstand type tests,the ratio is 1.15;for the DC polarity reversal type test,the ratio is 1.15;for the AC voltage withstand type tests,the ratio is 1.15;for BIL tests,the ratio is 1.05;for SIL tests,the ratio is 1.05.Moreover,the technical parameters of the bushings of converter transformer＇s valve side of Zhundong converter station are provided.关键词
±1100kV/特高压直流输电/换流变压器/阀侧套管/套管结构/外绝缘Key words
± 1 100 kV/UHVDC transmission/converter transformer/the bushings of valve side/structure of bushing/external insulation分类
信息技术与安全科学引用本文复制引用
张学成,檀金华,牛万宇,潘良胜,李灿..±1100kV直流输电工程换流变压器阀侧套管的设计[J].高电压技术,2012,38(2):393-399,7.
