Title :
Investigation of high-Tc bulk material for its use in resistive superconducting fault current limiters
Author :
Noe, Mathias ; Juengst, Klaus-Peter ; Werfel, Frank ; Cowey, Lisa ; Wolf, André ; Elschner, Steffen
Author_Institution :
Inst. fur Tech. Phys., Forschungszentrum Karlsruhe, Germany
fDate :
3/1/2001 12:00:00 AM
Abstract :
Superconducting fault current limiters (SCFCL) offer an attractive means to limit short-circuit currents in power systems. Comparisons of available HTS material led to the derision to investigate melt cast processed (MCP) BSCCO and melt textured polycrystalline YBCO for use in resistive SCFCLs. As a great length of a superconductor per unit element is preferred, the BSCCO samples are shaped as bifilar coils prepared from tubes and the YBCO samples are manufactured in a meander shaped geometry. Test results concerning contact resistances, E-J curves, AC losses as well as the quench behaviour of the samples are presented. The experiments reveal the requirement of a high material homogeneity as the main challenge
Keywords :
fault current limiters; high-temperature superconductors; power system faults; power system protection; short-circuit currents; superconducting coils; superconducting devices; AC losses; Bi2Sr2CaCu2O8; E-J curves; YBaCuO; bifilar coils; contact resistances; high-Tc bulk superconducting material; melt cast processed superconductors; power systems; quench behaviour; resistive superconducting fault current limiters; short-circuit currents limitation; Bismuth compounds; Fault current limiters; Geometry; High temperature superconductors; Manufacturing; Power system faults; Superconducting coils; Superconducting materials; Testing; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
