DIANQI YU NENGXIAO GUANLI JISHU ›› 2020, Vol. 591 ›› Issue (6): 65-70.doi: 10.16628/j.cnki.2095-8188.2020.06.013

• Distribution System Technology • Previous Articles     Next Articles

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

XIAO Xiaobing, FU Yu, ZHANG Ruifeng, LONG Qiufeng, ZHENG Youzhuo, LIU Anjiang, ZHANG Yang   

  1. Guizhou Power Grid Co.,Ltd.,Electric Power Research Institute,Guiyang 550000,China
  • Received:2020-01-21 Online:2020-06-15 Published:2020-07-07

Abstract: 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.

Key words: modular multilevel converter(MMC), single-phase grounding fault, simulation analysis, protection configuration scheme

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