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http://dx.doi.org/10.4313/JKEM.2011.24.2.136

Analysis on Current Limiting Characteristics of Flux-Lock Type SFCL Using a Transformer Winding  

Han, Tae-Hee (Department of Energy Resources Engineering, Jungwon University)
Lim, Sung-Hun (Department of Electrical Engineering, Soongsil University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.24, no.2, 2011 , pp. 136-140 More about this Journal
Abstract
The fault current limiting characteristics of the flux-lock type superconducting fault current limiter (SFCL) using a transformer winding were investigated. The suggested flux-lock type SFCL consists of two parallel connected coils on an iron core and the transformer winding connected in series with one of two coils. In this SFCL, the high-TC superconducting (HTSC) element was connected with the secondary side of the transformer. The short-circuit experimental devices to analyze the fault current limiting characteristics of the flux-lock type SFCL using the transformer winding were constructed. Through the short-circuit tests, the flux-lock type SFCL using transformer winding was shown to perform more effective fault current limiting operation compared to the previous flux-lock type SFCL without the transformer winding from the viewpoint of the quench occurrence and the recovery time of the HTSC element.
Keywords
Flux-lock type superconducting fault current limiter (SFCL); Fault current limiting characteristics; Transformer winding;
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