Abstract
Electrodynamic forces developed under short-circuit events must be well characterized in power-grid applications, as they can compromise the integrity of network systems, particularly power transformers, but also inductive superconducting fault current limiters (SFCLs). These strains can destroy windings causing failure of the devices and affecting power-grid operation. In this paper, the analysis of electrodynamic forces developed in an inductive SFCL of transformer type under such extreme conditions is carried out based on finite-elements method (FEMs). The secondary of the envisaged devices is built by high-temperature superconducting (HTS) coated conductors and distinct configurations (radially and axially distributed windings) are analyzed in order to determine the most adequate for electromagnetic forces minimization. FEM results for developed radial and axial forces are evaluated and compared, as well as current distribution and normal magnetic induction in each winding.
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