Abstract
Superconducting fault current limiters offer superior technical performance in comparison with conventional methods to limit fault currents. Due to prominent advantages and practical demand, the saturated iron-core superconductive fault current limiter (SISFCL) has been applied on transmission lines and distribution system. Considering the actual structure, the sophisticated equivalent magnetic circuit of the SISFCL was proposed first in the paper. Based on those above, the electromagnetic transient simulation model of the SISFCL was built in Matlab/Simulink. To realize accurate electromagnetic transient simulation, Newton iteration method and fundamental magnetic magnetization curve are introduced into the calculation of the current-limiting inductance during simulation. The transient behavior of the SISFCL in simulation tests illustrated that the proposed method is valid and correct.
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