Title :
Resistive current limiters with YBCO films
Author :
Gromoll, B. ; Ries, G. ; Schmidt, W. ; Kramer, H.-P. ; Kummeth, P. ; Neumuller, H.-W. ; Fischer, S.
Author_Institution :
Siemens AG, Erlangen, Germany
fDate :
6/1/1997 12:00:00 AM
Abstract :
The aim of this work is to develop a function model of a resistive HTSC fault current limiter. The switching elements of the fault current limiter are bath-cooled in a liquid nitrogen cryostat. The elements consist of YBaCuO films which are deposited on different substrates with critical current densities of up to 3/spl middot/10/sup 6/ A/cm/sup 2/. For the most effective limiting samples so far the peak let-through current was twice tile nominal current and the steady short-circuit current below nominal current. The concept of a 100 kVA function model is introduced.
Keywords :
barium compounds; copper compounds; critical current density (superconductivity); current limiters; high-temperature superconductors; power system protection; short-circuit currents; superconducting devices; yttrium compounds; 100 kVA; YBaCuO; YBaCuO HTSC; critical current densities; liquid nitrogen cryostat; peak let-through current; resistive fault current limiter; short-circuit current; substrates; switching elements; Critical current density; Current limiters; Fault current limiters; Gold; Substrates; Superconducting cables; Superconducting epitaxial layers; Superconducting films; Superconducting magnetic energy storage; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
