Temperature rise in a model of resistive HTS element of a fault current limiter

The thermal regime of the Ni tape immersed into liquid nitrogen and heated up due to a step-like direct current is studied. The tape cooling after a transport current is switched off has been investigated as well. The aim of this study consists in modeling the thermal regime of a HTS of a resistive...

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Bibliographic Details
Published in:Journal of physics. Conference series 2008-02, Vol.97 (1), p.012035
Main Authors: Dul'kin, I N, Fisher, L M, Ivanov, V P, Kalinov, A V, Sidorov,, V A, Yevsin, D V
Format: Article
Language:English
Subjects:
Cooling
Current limiters
Direct current
Heat transfer
Liquid nitrogen
Physics
Temperature dependence
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Summary:The thermal regime of the Ni tape immersed into liquid nitrogen and heated up due to a step-like direct current is studied. The tape cooling after a transport current is switched off has been investigated as well. The aim of this study consists in modeling the thermal regime of a HTS of a resistive fault current limiter during and after the fault. At the first stage a temporal dependence of a temperature rise in Ni tape is measured. An adiabatic approach that is commonly accepted is shown to give a conservative result. The thermal conduction into surroundings is necessary to take into account. This heat transfer mechanism is shown to play also the main role during the cooling. According to our results, necessary amount of HTS material for a resistive fault current limiter can be significantly reduced if one takes into account the heat transfer to liquid nitrogen.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/97/1/012035