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Characteristics of Hybrid-Type SFCL by the Number of Secondary Windings with YBCO Films  

Cho Yong-Sun (조선대 공대 전기공학과)
Choi Hyo-Sang (조선대 공대 전기공학과)
Park Hyoung-Min (조선대 공대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers A / v.55, no.2, 2006 , pp. 62-66 More about this Journal
Abstract
We investigated the characteristics of the hybrid-type superconducting fault current limiter (SFCL) by the number of secondary windings. The SFCL consists of a transformer, which has a primary winding and several secondary windings with serially connected $YB_{a2}Cu_{3}O_{7}$ films. In order to increase the capacity. of the SFCL, the serial connection between each current limiting unit is necessary. Resistive-type SFCL has a difficulty in quenching simultaneously between the units due to slight differences of their critical current densities. The hybrid-type SFCL could achieve the simultaneous quenching through the electrical isolation and the mutual flux linkage among the units. We confirmed that the capacity of the SFCL could be increased effectively through the simultaneous quenching among the units. In addition, the power burden of the system could be reduced by adjusting the number of secondary windings. We will investigate the method to increase the capacity through serial and Parallel connections among current limiting units.
Keywords
하이브리드형 초전도 사고전류제한기;전력부담;동시??치;2차권선의 개수;
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Times Cited By KSCI : 2  (Citation Analysis)
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