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논문 기본 정보

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학술저널
저자정보
정병익 (조선대학교) 최효상 (조선대학교) 박정일 (국토해양부) 조금배 (조선대학교)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제61권 제11호
발행연도
2012.11
수록면
1,743 - 1,747 (5page)

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The research of superconducting fault current limiter (SFCL) for reduction of the fault current is actively underway in the worldwide. In this paper, we analyzed the characteristics of a SFCL using the transformer and superconducting elements combined mutually in accordance with the fault types. The structure of this SFCL was composed of the secondary and third windings of a transformer connected to the load and the superconducting element, respectively. The provided electric power flew into the load connected to the secondary winding of the transformer in normal state. On the other hand, when the fault occurred in power system, the fault current was limited by closing the line of third winding of the transformer. At this time, the effect of the fault was minimized by opening the fault line in secondary winding of a transformer in power system. The sensing of the fault state was performed by the current transformer(CT) and then turn-on and turn-off switching behavior of the secondary line in the transformer was performed by the silicon-controlled rectifier(SCR). As a result, the proposed SFCL limited the fault current within one-cycle efficiently. Also, the degradation of the superconducting element in the normal state was avoided.

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UCI(KEPA) : I410-ECN-0101-2014-560-000960210