南方电网技术2016，Vol.10Issue(7)：62-68,7.DOI:10.13648/j.cnki.issn1674-0629.2016.07.012
±350 kV柔性直流系统穿墙套管设计选型
Design and Type Selection of ± 350 kV VSC-HVDC Wall Bushing
孙夏青 1赵林杰 1罗雨 1李锐海 1饶宏1
作者信息
摘要
Abstract
According to the system characteristics of ± 350 kV Luxi back-to-back VSC-HVDC transmission project for asynchronous interconnection between Yunnan Power Grid and China Southern Power Grid,key technical principles are proposed for the design and type selection of the VSC-HVDC valve AC side wall bushing considering the requirements of system equipment adaptability,parameter configuration,typical structure selection,monitoring device and test inspection. The research shows that key influencing factors,such as system topology and grounding bias leading to AC and DC voltage superposition,various operation mode resulting in wide range fluctuation of voltage and current,different installation location affecting the rated current calculation,should be considered during the design of VSC-HVDC wall bushing. Both the dry-capacitor type structrure form and the dry-inflation type structrure form of wall bush-ing are analyzed,and it is proved that temperature compensation function is not needed in the SF6 pressure monitoring device of the wall bushing. Research results of this paper have been applied to the design and type selection of the wall bushing of ± 350 kV Luxi back-to-back VSC-HVDC project.关键词
柔性直流输电工程/穿墙套管/设计选型/压力监视Key words
VSC-HVDC/wall bushing/design and type selection/pressure monitoring分类
信息技术与安全科学引用本文复制引用
孙夏青,赵林杰,罗雨,李锐海,饶宏..±350 kV柔性直流系统穿墙套管设计选型[J].南方电网技术,2016,10(7):62-68,7.
