一种新型高温超导方形线的制备及基础特性研究

发布时间：2018-11-18 09:12

【摘要】：为了减小外界磁场对超导带材性能的影响,一些新型结构例如堆叠、换位、扭绞等高温超导线被广泛研究,在此基础上,提出一种制备新型高温超导方形线的工艺且制备了若干新型超导方形线样品。首先,将宽度为4mm的高温超导带材分切为1mm宽的超导窄带,同时将数根超导窄带堆叠、焊接成一根超导方形线。为了验证工艺的可行性,制备了若干高温超导方形线样品并对其基本特性进行了研究。结果表明,两组样品的临界电流分别为170A与255A,且临界电流曲线呈现出良好的超导特性。从椭圆和薄带方程的理论模型分析,其自场损耗的测试结果与理论结果基本一致。另外,同时对超导方形线的弯曲直径和轴向张力进行了测试,表明,样品的最小弯曲直径与最大轴向张力分别为60mm和350N。高温超导方形线的这些特性基本可以满足在高温超导电力设备的应用中。
[Abstract]:In order to reduce the influence of external magnetic field on the properties of superconducting tapes, some new structures, such as stacking, transposition, twisting, and so on, have been extensively studied. A new type of high temperature superconducting square wire is proposed and some new superconducting square wire samples are prepared. Firstly, the high temperature superconducting tape with width of 4mm is cut into 1mm wide superconducting narrow band. At the same time, several superconducting narrow bands are stacked and welded into a superconducting square wire. In order to verify the feasibility of the process, several high temperature superconducting square wire samples were prepared and their basic properties were studied. The results show that the critical currents of the two groups are 170A and 255A, respectively, and the critical current curves show good superconductivity. From the theoretical model analysis of elliptic and thin strip equations, it is found that the measured results of the self-field loss are in good agreement with the theoretical results. In addition, the bending diameter and axial tension of the superconducting square wire are measured. The results show that the minimum bending diameter and the maximum axial tension of the sample are 60mm and 350 N, respectively. These characteristics of high temperature superconducting square wires can be applied in high temperature superconducting power equipment.
【作者单位】：上海交通大学;国网上海市电力公司青浦供电公司;国网福建省电力有限公司;国网安徽省电力公司东至县供电公司;内蒙古工业大学;
【分类号】：TM26

【相似文献】