基于MMC的配电网交流前保护区单相接地故障分析  

Analysis of Single-Phase Grounding Fault in Pre-AC Protection Zone of Distribution Network Based on MMC

作　　者：肖小兵 付宇 张锐锋 龙秋风 郑友卓 刘安茳 张洋 XIAO Xiaobing;FU Yu;ZHANG Ruifeng;LONG Qiufeng;ZHENG Youzhuo;LIU Anjiang;ZHANG Yang(Guizhou Power Grid Co.,Ltd.,Electric Power Research Institute,Guiyang 550000,China)

机构地区：[1]贵州电网有限责任公司电力科学研究院,贵州贵阳550000

出　　处：《电器与能效管理技术》2020年第6期65-70,88,共7页Electrical & Energy Management Technology

基　　金：南方电网科技项目(066600KK52170087)。

摘　　要：基于模块化多电平换流器(MMC)在配电网中良好的适应性,对基于MMC的配电网建模过程、故障仿真、故障特性分析和保护配置方案进行研究,包括配电装置的拓扑结构和仿真模型的搭建。以故障仿真得出的故障特性结果为依据,设计主保护与后备保护方案,以便对配电网进行更加有效的保护。The modular multilevel converter(MMC)shows good adaptability in distribution network with its unique structural advantages and has been applied more and more widely.In this paper,the distribution network modeling process based on MMC,fault simulation,fault feature analysis and protection configuration scheme were studied,including the topological structure of distribution equipment and the construction of the simulation model.Based on the result of failure characteristics and,the main protection and backup protection scheme was designed,so that to more effectively protect the power distribution network.

关 键 词：模块化多电平换流器 单相接地故障 仿真分析 保护配置方案 

分 类 号：TM743[电气工程—电力系统及自动化]