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Bi-2212/Cu-Ni 튜브로 제작한 초전도 한류소자의 단락사고시험 결과
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  • Bi-2212/Cu-Ni 튜브로 제작한 초전도 한류소자의 단락사고시험 결과
  • Fabrication and Fault Test Results of Bi-2212/Cu-Ni Tubes for Superconducting Fault Current Limiting Elements
저자명
오성용,임성우,유승덕,김혜림,현옥배,Oh. S.Y.,Yim. S.W.,Yu. S.D.,Kim. H.R.,Hyun. O.B.
간행물명
Progress in superconductivity
권/호정보
2008년|10권 1호|pp.45-49 (5 pages)
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한국초전도학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

For the development of superconducting fault current limiters (SFCLs), fault current limiting elements were fabricated out of Bi-2212 bulk tubes and tested. The SFCL elements consisted of tube shaped Bi-2212 bulks and metal shunts for the stabilizers. Firstly, the Bi-2212 bulk tubes were processed based on a design of monofilar coils in order to acquire large resistance and high voltage rating. 300 mm-long Bi-2212 tubes were designed to have the current path of 410 cm in length with 24 turns and 41 mm in diameter. The processed monofilar coil, as designed, had 300 A $I_c$ at 77 K. The fabricated superconducting monofilar coils were affixed to Cu-Ni alloy as that of stabilizers. The Cu-Ni alloys were processed to have the same shape of the superconducting monofilar coils. The Cu-Ni coil had resistivity of 32 ${mu}{Omega}$-cm at 77 K and 37 ${mu}{Omega}$-cm at 300 K. The metal shunts were attached to the outside of the Bi-2212 monofilar coil by a soldering technique. After the terminals made of copper were attached to both ends of the superconductor-metal shunt composite, the gap between the turns and the surface of the elements was filled with an epoxy and a dense mesh made of FRP in order to enhance the mechanical strength. The completed SFCL elements went through fault tests, and we confirmed that the voltage rating of 143 $V_{rms}$ (E =0.35 $V_{rms}$/cm) could be accomplished.