A Study on the Design of the Stabilizer of Coated Conductor for Applying to SFCL

• Published in: IEEE transactions on applied superconductivity Vol. 17; no. 2; pp. 1855 - 1858
• Main Authors: Ahn, Min Cheol, Park, Dong Keun, Yang, Seong Eun, Kim, Min Jae, Kim, Ho Min, Kang, Hyoungku, Nam, Kwanwoo, Seok, Bok-Yeol, Park, Jung-Wook, Ko, Tae Kuk
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Cladding; Coated conductor; COATINGS; Conductivity; Conductors; Conductors (devices); Connection and protection apparatus; COPPER OXIDE; Electric connection. Cables. Wiring; Electric resistance; Electric wire; ELECTRICAL CONDUCTORS; Electrical engineering. Electrical power engineering; Electronics; Exact sciences and technology; Fault current limiters; Fault currents; Faults; High temperature superconductors; MATHEMATICAL ANALYSIS; Matrices; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; stabilizer; Superconducting devices; Superconducting epitaxial layers; superconducting fault current limiter; Superconducting filaments and wires; Superconducting films; Superconducting tapes; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TAPE; Various equipment and components; WIRE; Yttrium barium copper oxide; YTTRIUM OXIDE; Asia; Korea; Electrical conductivity; stabilizer; Protective device; superconducting fault current limiter; Superconductor device; Clad; Flexibility; Fault current limiters; Damage prevention; Coated material; Optimal design; Fault currents; Thick film; Coated conductor; Electrical conductor; High temperature superconductor
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2007.898130

A superconducting fault current limiter (SFCL) using high temperature superconducting (HTS) wire has been developed in Korea. While the first-generation wire has difficulty in adopting various matrices because it is made by PIT process, the second-generation wire has flexibility in the design of its stabilizer. In general, coated conductor (CC) tape is clad with a thick metal layer as a stabilizer on the superconducting layer such as YBCO. In addition, the metal layer has good electrical conductivity. However, resistive SFCL, when a fault occurs, limits fault current using high resistance of the stabilizer. Therefore, the design of stabilizer is one of the most important parts in the design of SFCL. In this paper, over-current characteristics of CC tapes clad with stabilizers having various specifications were experimentally investigated. It was possible to design the stabilizer of CC based on calculation. An SFCL rated on 13.2 kV/630 A was designed using the optimal design of the stabilizer.