조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제23권2호
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  • Pages.77-81
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  • 2009
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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병렬연결된 두 코일을 가진 자속구속형 초전도 전류제한기의 공극유무에 따른 전류제한 특성 분석

Analysis on Fault Current Limiting Characteristics Dependent on Air-Gap in a Flux-Lock Type SFCL with parallel connection of two coils

  • 발행 : 2009.02.28
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초록

병렬연결된 두 코일을 가진 자속구속형 초전도 전류제한기의 사고발생시 철심의 포화를 억제하기 위한 방안으로 공극을 도입하였다. 하지만, 공극의 도입으로 인해 자화전류가 증가하게 되어 자속구속형 초전도 전류제한기의 임피던스 감소를 초래하게 된다. 본 논문에서는 공극유무에 따른 병렬연결된 두 코일을 가진 자속구속형 초전도 전류제한기의 전류제한 특성을 등가회로와 실험결과에 대한 비교분석을 통해 공극도입의 장.단점을 확인하였다.

Air-gap was introduced to suppress the saturation of the iron core comprising the flux-lock type superconducting fault current limiter (SFCL) with parallel connection of two coils. However, the air-gap makes the impedance of this SFCL decreased and can result in unusefulness of the SFCL. To analyze the current limiting characteristics of the SFCL with the air-gap, the experimental circuit for short-circuit test was constructed. Through the comparison with the current limiting characteristics of the SFCL without air-gap, the merit and the demerit of the flux-lock type SFCL with the air-gap were discussed.

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참고문헌

  1. S. H. Lim, H. S. Choi, and B. S. Han, "The fault current limiting characteristics of a flux-lock type high-TC superconducting fault current limiter using a seriesresonance", Cryogenics, vol. 44, pp. 249-254, April 2004 https://doi.org/10.1016/j.cryogenics.2003.11.002
  2. S. H. Lim, H. S. Choi, and B. S. Han, "Fault Current Limiting Characteristics due to Winding Direction between Coil 1 and Coil 2 in a flux-lock type SFCL", Phys. C, vol. 416, pp. 34-42, November 2004 https://doi.org/10.1016/j.physc.2004.08.019
  3. Sung-Hun Lim, Hyo-Sang Choi, Dong-Chul Chung, Seokcheol Ko, and Byoung-Sung Han, "Impedance Variation of a Flux-Lock Type SFCL Dependent onWinding Direction Between Coil 1 and Coil 2", IEEE Trans. on Appl. Supercond., vol. 15, no. 2, pp. 2039-2042, June 2005 https://doi.org/10.1109/TASC.2005.849446
  4. S. H. Lim, H. S. Choi, and B. S. Han, "The improved hysteresis characteristics of flux-lock type SFCL using third winding," Phys. C, vol. 406, pp. 37-45, July 2004 https://doi.org/10.1016/j.physc.2004.02.177
  5. Sung-Hun Lim, Tae-Hee Han, Seong-Woo Yim, Hyo-Sang Choi, and Byoung-Sung Han, "Current Limiting Characteristics of a Flux-Lock Type SFCL Dependent on Fault Angles and Core Saturation", IEEE Trans. on Appl. Supercond., vol. 17, no. 2, pp. 1827-1830, June 2007 https://doi.org/10.1109/TASC.2007.899868