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- 저자 : 趙鎔善(Yong-Eun Cho) (검색결과 1 건)
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Operating Characteristics of Hybrid Type Superconducting Fault Current Limiter
趙鎔善(Yong-Eun Cho),崔孝祥(Hyo-Sang Choi),南肯賢(Gueng-Hyun Nam),林成勳(Sung-Hun Lim) 대한전기학회 2006 전기학회논문지A Vol.55 No.6
We investigated the operating characteristics of the hybrid-type superconducting fault current limiter (SFCL) according to the inductance of secondary windings. The hybrid type SFCL consists of a transformer that has a primary winding and a secondary winding with serially connected YBa₂Cu₃O? (YBCO) films. The resistive-type SFCL has difficulty when it comes to raising the capacity of the SFCL due to slight differences of critical current densities between units and structure of the SFCL. The hybrid-type SFCL with closed-loop is able to achieve capacity increase through the electrical isolation and reduction of the inductance of the secondary winding with a superconducting element of the same critical current. On the other hand, the current limiting characteristics were nearly identical in the hybrid-type SFCL with open-loop compared to closed-loop, but quench time was longer than the hybrid-type SFCL with closed-loop. We confirmed that the capacity of the SFCL was increased effectively by the reduced inductance of the secondary winding. In addition, the power burden of the system also could be lowered by reducing the inductance of secondary winding.
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