Current redistribution between strands and quench process in a superconducting cableстатья
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Дата последнего поиска статьи во внешних источниках: 15 июля 2021 г.
Аннотация:The influence of current redistribution between strands on the quench process in a superconducting cable is studied. A theoretical model is developed which accounts for non-uniformities in strands. In agreement with experimental data, the model predicts that three different current redistribution modes may be observed in the cable, depending on the initial current; namely the current sharing mode, and slow and fast quench modes. It is shown that fast current redistribution can initiate multiple normal zone nucleation in strands. This phenomenon is responsible for an abnormally large normal zone propagation velocity. The results obtained are of importance for understanding the quench process in multistrand superconducting cables.