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Modeling Thermal Process in a Resistive Element of a Fault Current Limiter

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6 Author(s)
Dul'kin, I.N. ; All-Russian Electr. Eng. Inst., Moscow ; Yevsin, D.V. ; Fisher, L.M. ; Ivanov, V.P.
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The thermal regime of the Ni tape immersed into liquid nitrogen and heated up due to Joule losses generated by a step-like direct current is studied experimentally and theoretically. The temporal dependence of the temperature rise in Ni tape is measured. An adiabatic approach is shown to give a conservative result. According to our results, taking into account the heat transfer by thermal conduction into liquid nitrogen is necessary. This circumstance allows one to reduce a significantly necessary amount of high-temperature-superconductor material for the superconducting part of a resistive fault current limiter.

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Applied Superconductivity, IEEE Transactions on  (Volume:18 ,  Issue: 1 )