Multiphysics Finite Element Modelling of the Fault Response and Recovery of First Generation Superconducting Cables

了解超导电缆的故障响应对其广泛应用具有重要意义。特别是，了解电缆的额定值和空间设计如何影响其故障响应和在特定电网中发生高过流故障后的恢复时间是有用的。要做到这一点，必须建立可靠的建模技术。电缆的详细电磁和热建模将在COMSOL中进行。该模型将通过MATLAB中的耦合样本电网模型进行补充。到目前为止，已经成功地建立了Bi-2223超导带磁场依赖行为的数值模型。该模型已被用于提出和验证两种均匀化技术的Bi-2223磁带，减少计算时间通过简化几何结构。未来的工作将包括引入热模型并将问题扩展到电缆级别。

Understanding the fault response of superconducting cables is important to their wider adoption. In particular, it is useful to understand how the cable's rating and spatial design would influence both its fault response and time of recovery after a high through fault overcurrent in a particular grid. To achieve that, reliable modelling techniques must be established. A detailed electromagnetic and thermal modelling of a cable will be performed in COMSOL. This modelling will be complemented by a coupled sample power grid model in MATLAB. So far, a successful numerical model of magnetic field dependent behaviour of a Bi-2223 superconducting tape has been demonstrated. This model has been used to propose and verify two homogenization techniques for Bi-2223 tapes that decrease the computation time by simplifying the geometry. Future work will include introducing a thermal model and scaling the problem to cable level.