| Title |
Analysis on the Improvement of Power Capacity Increase in the Transformer-Type SFCL with Neutral Lines |
| Authors |
조용선(Cho, Yong-Sun) ; 최효상(Choi, Hyo-Sang) ; 김덕구(Kim, Deog-Goo) ; 고성필(Go, Sung-Pil) |
| DOI |
https://doi.org/10.5370/KIEE.2011.60.7.1438 |
| Keywords |
Transformer-type SFCL ; Neutral line ; Consumption power ; Simultaneous quench |
| Abstract |
The increase of power capacity in the superconducting fault current limiter (SFCL) is essential for application into the power grid. To achieve this, when superconducting units were connected in series and parallel, the unbalanced quenching characteristics between superconducting units generated by different critical current behavior should be improved. In the transformer-type SFCL, the superconducting units connected in series could be simultaneously quenched by the connection of neutral lines between secondary coils and superconducting units. From this the consumed power in superconducting units was equally distributed. In addition, the more the turn ratio of the transformer was reduced, the more consumed power in the superconducting units was reduced by the decrease of the induction voltage generated in the superconducting units. From those results, the transformer-type SFCL using neutral lines could increase the power capacity of the SFCL by the equal power division into the superconducting units. |