多端直流汇流母线差动保护的整定逻辑、配合原则和工程应用研究  

Research on Setting Logic,Coordination Principle and Engineering Application of Multi-terminal HVDC Busbar Differential Protection

作　　者：罗小林 冯文昕[1] 侯谭松 方睿 LUO Xiaolin;FENG Wenxin;HOU Tangsong;FANG Rui(Guiyang Bureau,Extra High Voltage Power Transmission Company,China Southern Power Grid,Guiyang 550081,China)

机构地区：[1]中国南方电网超高压输电公司贵阳局,贵州贵阳550081

出　　处：《电工技术》2022年第1期149-151,172,共4页Electric Engineering

摘　　要：随着两端直流日臻成熟,多端直流逐渐得到应用,尤其是最近几年相继建成了多条多端直流,可预见三端乃至多端直流将在电力系统中起到越来越重要的作用。三端直流的工程应用为电力系统的发展带来了许多前沿课题。以禄高肇直流汇流母线差动保护为例,分析了汇流母线差动保护的判据、整定逻辑和保护配合原则,以及在工程中的应用情况,并提出改进建议。With the maturity of DC at both ends,multi terminal DC has gradually entered the historical stage.Especially in recent years,China has built many multi terminal DC.It can be predicted that three terminal and even multi terminal DC will play a more and more important role in power system.The engineering application of three-terminal DC has brought many frontier issues to the development of power systems.Taking lugaozhao DC bus differential protection as an example,the criterion,setting logic and protection coordination principle of bus differential protection are analyzed,as well as its application in engineering,and improvement suggestions are put forward.

关 键 词：多端直流 高压直流输电 汇流母线保护 整定逻辑 保护配合原则 

分 类 号：TM721.1[电气工程—电力系统及自动化]