摘要
LCC-MMC型混合直流输电系统(LCC-MMC Hybrid Based High Voltage Direct Current,LCC-MMC Hybrid HVDC)是通过串并联等方式结合各种电网换相换流器(Line Commutated Converter)和模块化多电平换流器(Modular Multilevel Converter)的技术特性,相互扬长避短而形成的新型直流输电拓扑结构。本文在简要介绍LCC和MMC基本结构和技术特点的基础上,分别阐述了LCC-MMC型混合两端、混合多端、混合多馈入和混合双极直流输电系统各自的运行特性、优缺点及应用场景等,指出当前其面临的问题及相应的研究现状。最后总结了LCC-MMC型混合直流输电系统的优势和不足,展望了未来混合直流技术的研究和发展方向,表明了该技术在未来的直流建设中将会得到广泛的应用。
The LCC-MMC Hybrid based high voltage direct current(HVDC)transmission system is a new type of DC transmission topology formed by combining the technical characteristics of various line commutated converter(LCC)and modular multilevel converter(MMC)by series and parallel.Based on a brief introduction to the basic structure and technical characteristics of LCC and MMC,this paper describes the operating characteristics,advantages,disadvantages,and applications of LCC-MMC two-terminal,multi-terminal,multi-infeed,and bipolar HVDC transmission systems.And then,pointing out the current problems and the corresponding research status.Finally,the advantages and disadvantages of LCC-MMC hybrid HVDC transmission system are summarized.The research and development direction of hybrid DC technology in the future are forecasted.It shows that this technology will be widely used in future HVDC construction.
作者
黄俊玮
谭建成
文泓铸
HUANG Jun-wei;TAN Jian-cheng;WEN Hong-zhu(College of Electrical Engineering,Guangxi University,Nanning 530004,China)
出处
《电气开关》
2019年第5期1-5,10,共6页
Electric Switchgear
