The quench protection in high-temperature superconducting (HTS) magnets is a well-known issue. Therefore, it is fundamental to have reliable models available for the analysis of the quench propagation in such magnets. The quench propagation in an ENEA HTS cable-in-conduit conductor, developed for fusion applications with the particular reference to an insert for the central solenoid of the Italian Divertor Tokamak Test (DTT) facility, is analyzed here with a new 1-D multiregional thermal-hydraulic and electric model, based on dedicated preliminary analyses and experimental and numerical characterization of the conductor. It is shown that large temperature differences arise in the conductor cross section during the quench propagation. The model is then applied to parametrically assess the effects of delay and fast current-discharge times on the conductor peak temperature, to avoid damaging the HTS. The parametric study shows that both the delay and current discharge time should stay below 0.5 s, to keep the peak temperature below 150 K.

中文翻译：

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对 ENEA HTS 电缆套管导体中的失超传播进行建模

高温超导 (HTS) 磁体中的失超保护是一个众所周知的问题。因此，拥有可用于分析此类磁体中的失超传播的可靠模型至关重要。ENEA HTS 电缆套管导体中的失超传播，为融合应用而开发，特别参考了意大利转向器托卡马克测试 (DTT) 设施的中央螺线管的插件，这里使用新的一维多区域进行分析热工水电模型，基于专门的初步分析以及导体的实验和数值表征。结果表明，在失超传播过程中，导体横截面会出现较大的温差。然后应用该模型以参数方式评估延迟和快速电流放电时间对导体峰值温度的影响，以避免损坏 HTS。参数研究表明，延迟和电流放电时间都应保持在 0.5 s 以下，以保持峰值温度低于 150 K。