A Novel I-SFCL Concept for Application in Flexible DC Grid Considering the Operation Stability

被引：5
作者：
He, Jiawei [1 ]
Li, Bin [1 ]
Li, Chao [1 ]
Jia, Hanru [1 ]
Li, Ye [1 ]
Coombs, Tim [2 ]
机构：
[1] Tianjin Univ, Key Lab Smart Grid, Minist Educ, Tianjin 300072, Peoples R China
[2] Univ Cambridge, Dept Engn, Elect Engn Div, Cambridge CB3 0FA, England
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2021年 / 31卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Flexible dc grid; dc SFCL; transient response ability; operation stability;
D O I：
10.1109/TASC.2021.3101787
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
DC fault current limitation is the key technique to improve the reliability and security of flexible dc grid operation. But the traditional dc fault current limiting method, which directly installs inductor in dc grid, will seriously deteriorate transient response ability and operation stability of the dc grid. In this paper, a simple I-SFCL topology is proposed. According to the theoretical analysis, the I-SFCL has similar ability of limiting dc fault current compared with the method directly installing dc inductor. And it can effectively eliminate negative effect of dc inductor on system transient response ability and operation stability. Finally, the simulation cases based on PSCAD/EMTDC proves the correctness of theoretical analysis and superiority of the proposed I-SFCL.
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页数：5
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