Abstract
Superconducting cables can be used to transport large amounts of energy with small lossesin considerably smaller volume compared to conventional cables. At present, the firstYBCO cable demonstrations are under development and they are expected tooutperform BSCCO cables. Due to extremely high current densities in very thinsuperconducting films these cables are sensitive to overcurrents and therefore cabledesigners should be able to predict their behaviour during faults. In this paper, thetemperature distribution in various 1 kA YBCO cable geometries was computedwith several fault current waveforms in order to study the cable stability. FEMmodels were used to determine simultaneously both the current density and thetemperature distributions of the cable as functions of time. Real temperaturedependent properties of the cable materials and the strong magnetic field and currentdensity dependence of the superconductor resistivity were taken into account.
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