The normal zone propagation velocity (NZPV) of three families of REBCO tape architectures designed for superconducting fault current limiters and to be used in high voltage direct current transmission systems has been measured experimentally in liquid nitrogen at atmospheric pressure. The measured NZPVs span more than three orders of magnitude depending on the tape architectures. Numerical simulations based on finite elements allow us to reproduce the experiments well. The dynamic current transfer length (CTL) extracted from the numerical simulations was found to be the dominating characteristic length determining the NZPV instead of the thermal diffusion length. We therefore propose a simple analytical model, whose key parameters are the dynamic CTL, the heat capacity and the resistive losses in the metallic layers, to calculate the NZPV.

中文翻译：

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各种 REBCO 磁带架构中的正常区域传播

为超导故障限流器设计并用于高压直流输电系统的三个 REBCO 带结构系列的正常区域传播速度 (NZPV) 已在大气压力下的液氮中进行了实验测量。根据磁带架构，测得的 NZPV 跨越三个数量级以上。基于有限元的数值模拟使我们能够很好地重现实验。从数值模拟中提取的动态电流传输长度 (CTL) 被发现是决定 NZPV 而不是热扩散长度的主要特征长度。因此，我们提出了一个简单的分析模型，其关键参数是动态 CTL、热容量和金属层中的电阻损耗，以计算 NZPV。