Study on Recovery Time of Conduction-Cooled Resistive Superconducting Fault Current Limiter

Janusz Kozak ()
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Janusz Kozak: Faculty of Electrical Engineering and Computer Science, Department of Electrical Engineering and Superconducting Technology, Lublin University of Technology, 38A Nadbystrzycka St., 20-618 Lublin, Poland

Energies, 2024, vol. 17, issue 13, 1-12

Abstract: This paper presents the influence of superconducting tape insulation on the recovery time of superconducting fault current limiters. The analysis is based on the experimental results of short-circuit tests. The reduction in the thermal and dynamic effects of the passage of a fault current can be achieved by limiting the short-circuit time and the value of the surge current. An ideal fault current limiter is required to have almost zero impedance at operating currents and significant impedance at fault conditions. A superconducting fault current limiter (SFCL) meets these requirements under certain conditions. The recovery time—a very important parameter—shows the ability of the limiter to return to the superconducting state to be ready to limit the subsequent short circuit. The experimental results show that the recovery time can be significantly reduced with the application of thin-film insulation and an appropriate design of the conduction cooling of the HTS tape.

Keywords: superconducting fault current limiter; recovery time; superconducting tape; short circuit (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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