中文摘要：

通过实验方式测量在各种不同幅值工频交流冲击下,具有稳定层与没有稳定层的钇钡铜氧（YBa2Cu3Ox,YBCO）超导带材上不同区域的电压和温度。针对超导带材的临界电流分布不均匀的现象,提出分析这种不均匀性的物理模型,利用该模型对具有不均匀临界电流密度分布的YBCO超导带材的过电流冲击特性进行仿真计算分析。通过实验结果与仿真计算结果的对比,分析了YBCO超导带材的不均匀性对其过流特性的影响,研究结果可以为超导电力设备的设计提供有益的参考。

英文摘要：

The voltage and temperature in various sections of YBa2Cu3Ox （YBCO） tapes with or without stabilizer were measured at AC over-current with different amplitudes. A model considering the inhomogeneous critical current density distribution in the tape was proposed. Using this model, the over-current properties of the YBCO HTS tape was numerically simulated. Comparing the experiments with the numerical results, effects of inhomogeneous superconducting properties of YBCO HTS tape on the transient characteristics under over-current condition were obtained. The results are helpful for the design of superconducting electrical equipment.