Analysis of DC Line Bipolar Short Circuit Fault in Full Bridge MMC Flexible DC System

被引:0
|
作者
Liu, Zhong [1 ]
Zhang, Junyan [1 ]
Liu, Chaowu [1 ]
Zhang, Kaixin [2 ]
Shi, Shenxing [2 ]
Dong, Xinzhou [2 ]
机构
[1] State Grid Corp, Yangzhou Power Supply Co, Yangzhou, Jiangsu, Peoples R China
[2] Tsinghua Univ, Dept Elect Engn, Beijing, Peoples R China
关键词
flexible DC system; converter; fault analysis; PSCAD;
D O I
10.1109/IFEEA57288.2022.10038103
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
After the bipolar fault occurs in the flexible DC transmission line, the converter will affect the fault current, so it is necessary to analyze the fault of the system with converter. Aiming at the common full bridge MMC converter topology, this paper establishes its corresponding circuit model after fault, and derives the fault current expressions in capacitor discharge stage and bridge arm inductance freewheeling stage after blocking. Finally, the simulation is carried out in PSCAD.
引用
收藏
页码:306 / 310
页数:5
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