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Fault current limiting method using a SFCL in a neutral line of a three-phase power system

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3 Author(s)
Sung-Hun Lim ; Soonsil Univ., Seoul ; Jong-Fil Moon ; Jae-Chul Kim

In this paper, we suggested the fault current limiting method using superconducting fault current limiter (SFCL) in a neutral line of a power system. Generally, the occurrence frequency of the single line-to-ground fault is highest among three-phase fault types in a power system. Therefore, since it can cover most of faults in a power system, this limiting method using one SFCL in a neutral line can be more profitable compared to the conventional method using three SFCLs in all three phases. To confirm the usefulness of the suggested method, the single line- to-ground fault experiments for the suggested method and the conventional one were performed. Through the comparison for the experimental results of two methods, it was shown that the suggested method was more advantageous from the viewpoint of the practical use and the coordination with other protective device in the power system.

Published in:

Electrical Machines and Systems, 2007. ICEMS. International Conference on

Date of Conference:

8-11 Oct. 2007