Title :
Thermal and magnetic characteristics of bulk superconductor and performance analysis of magnetic shielding type of superconducting fault current limiter
Author :
Ueda, H. ; Ishiyama, A. ; Kado, H. ; Ichikawa, M.
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Waseda Univ., Tokyo, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
Superconducting fault current limiter (SCFCL) is expected to be the first application of a high-temperature superconductor (HTS) to electric power systems. The authors have been developing a magnetic shielding type of SCFCL that uses a cylindrical Bi-2223 HTS bulk. Short-circuit fault tests in a small SCFCL model were performed experimentally. A computer program based on the finite element method (FEM) taking the voltage-current (E-J) characteristics of the bulk material into account was developed to analyze the performance in the short-circuit fault tests and to investigate the dynamic electromagnetic behavior within a bulk superconductor. Because the E-J characteristic of HTS bulk depends on temperature and magnetic field, they investigated experimentally the E-J characteristics of a bulk superconductor in various operating temperatures and magnetic fields. The computer program considering the measured E-J characteristics simulated the electromagnetic behaviors in an SCFCL test model successfully (BiPb)2Sr2Ca2Cu3O10
Keywords :
bismuth compounds; calcium compounds; copper compounds; fault current limiters; finite element analysis; high-temperature superconductors; lead compounds; magnetic fields; strontium compounds; superconducting device testing; superconducting devices; thermal analysis; (BiPb)2Sr2Ca2Cu3O 10; (BiPb)2Sr2Ca2Cu3O 10 HTSC bulk; E-J characteristics; computer program; cylindrical Bi-2223 HTS bulk; dynamic electromagnetic behavior; electromagnetic behaviors; finite element method; magnetic characteristics; magnetic shielding; operating temperatures; performance analysis; power systems; short-circuit fault tests; superconducting fault current limiter; thermal characteristics; voltage-current characteristics; Application software; Fault current limiters; High temperature superconductors; Magnetic field measurement; Magnetic shielding; Power system modeling; Superconducting magnets; Superconducting materials; Temperature dependence; Testing;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
