Study on Superconducting Fault Current Limiters Based on Normal Transformers
- Authors
- Chung, Dong Chul; Pak, Byeong Ha; Cho, Yong Sun; Jung, Byung Ik; Sung, Tae Hyn; Choi, Hyo Sang
- Issue Date
- Jun-2012
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Fault currents; quench; SFCL; superconductors; transformer
- Citation
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, v.22, no.3, pp.1 - 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
- Volume
- 22
- Number
- 3
- Start Page
- 1
- End Page
- 4
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/165448
- DOI
- 10.1109/TASC.2011.2177511
- ISSN
- 1051-8223
- Abstract
- We propose a new structure of superconducting fault current limiters (SFCLs) coupled with a conventional transformer. The proposed SFCL systems have structures that the primary winding and the secondary winding of a transformer are connected with normal power grids and the tertiary winding of a transformer is connected with superconductors. These structures have advantages of both a transformer type SFCL and a resistive type SFCL. Therefore our SFCL can easily control the current limiting ratio by variation of the turn number of a transformer and minimize quantity of superconductors. Also it can be invisible in normal power grids and not bulky structure unlike a transformer type SFCL or a flux-lock type SFCL. Experimental results are reported in terms of current limiting properties, fault voltages and quench characteristics of superconductors in this system.
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