A Directional Pilot Protection Based on Phase Angle of Transient High-frequency Impedance for Flexible DC Distribution Grid

被引：0
|
作者：
Jia K. [1 ]
Xuan Z. [1 ]
Li C. [2 ]
Wang C. [1 ]
Li M. [1 ]
Bi T. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Changping District, Beijing
[2] State Grid Chengdu Electric Power Supply Company, Chengdu, 610041, Sichuan
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2018年 / 38卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Directional pilot protection; Fault identification; Flexible DC distribution grid; High frequency impedance; Modular multilevel converter (MMC);
D O I：
10.13334/j.0258-8013.pcsee.171978
中图分类号：
TM7 [输配电工程、电力网及电力系统];
学科分类号：
080802 ;
摘要：
Flexible DC distribution system has become the development trend of future distribution grid, but it's so vulnerable to the DC faults. Thus, a rapid and selective DC fault discrimination method is required to enhance the system security. Considering the transient high-frequency impedances are different when the faults locate on the various lines, this paper proposed a novel transient high-frequency impedance comparison based DC protection and detailed system protection scheme has also been designed.Finally, a flexible DC distribution model with the converters which can clear the fault current was built in PSCAD/EMTDC. The simulation results show the proposed method is robust to different system parameters and fault transition resistances, the protection scheme has the great anti- noise capability. © 2018 Chin. Soc. for Elec. Eng.
引用
收藏
页码：5343 / 5351
页数：8
相关论文
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