Improvement of Current Limiting and Recovery Characteristics of Flux-Lock Type SFCL with Series Connection of Two Coils Using Its Third Coil

다국어 초록 (Multilingual Abstract)

In this work, the current limiting and recovery characteristics of a flux-lock type superconducting fault current limiter (SFCL) with series connection of two coils were effectively improved by adding a third winding into the conventional flux-lock type SFCL with series connection of two coils. To confirm the contribution of the third winding to the current limiting and recovery characteristics of this type of the SFCL, short-circuit testing was carried out with consideration of the third winding, and the effect of the third winding on the current limiting and recovery characteristics was examined by comparative analysis of the amplitude of the limited fault current and the power burden of the high-TC superconducting (HTSC) element comprising the SFCL. Through the analysis of both the limiting impedance and the operational current as the main design parameter of the SFCL, the improved current limiting and recovery characteristics of the flux-lock type SFCL using the third winding could be verified.

참고문헌 (Reference)

1 S. H. Lim, "Study on peak current limiting characteristics of a flux-lock type SFCL using its third winding" 21 (21): 1275-1279, 2011

2 S. H. Lim, "Quench characteristics of HTSC elements in series-connected flux-lock type SFCLs through magnetic flux-linkage" 445-448 : 1073-1077, 2006

3 H. Shimizu, "Proposal of flux flow resistance type fault current limiter using Bi2223 high Tc superconducting bulk" 12 (12): 876-879, 2002

4 S. H. Lim, "Operational characteristics of flux-lock type SFCL with series connection of two coils" 17 (17): 1895-1898, 2007

5 H. S. Choi, "Operating performance of the flux-lock and the transformer type superconducting fault current limiter using the YBCO thin films" 17 (17): 1823-1826, 2007

6 H. Kado, "Inductive type fault current limiter using Bi-2223 thick film on MgO cylinder with Bi-2212 buffer Layer" 15 (15): 2051-2054, 2005

7 S. H. Lim, "Fault current limiting characteristics of resistive type SFCL using a transformer" 15 (15): 2055-2058, 2002

8 S. H. Lim, "Current limiting characteristics of a fluxlock type SFCL dependent on fault angles and core saturation" 17 (17): 1827-1830, 2007

9 S. H. Lim, "Comparative study on current limiting characteristics of flux-lock type SFCL with series or parallel connection of two coils" 468 : 2076-2080, 2008

10 Seckcheol Ko, "Analysis on fault current limiting and recovery characteristics of a flux-lock type SFCL with an isolated transformer" 484 : 263-266, 2013

11 S. H. Lim, "Analysis on current limiting characteristics of a transformer type SFCL with two triggering current levels" 484 : 253-257, 2013

12 S. H. Lim, "Analysis on current limiting characteristics of a flux-lock type SFCL with two triggering current levels" 471 : 1354-1357, 2011