500 kVA/10 kV高温超导变压器设计及稳态特性研究  

Design and steady-state characteristics of a 500 kVA/10 kV HTS transformer

作　　者：皮伟[1] 田宾一 马元通 王银顺[1] Pi Wei;Tian Binyi;Ma Yuantong;Wang Yinshun(State Key Laboratory for Alternate Electrical Power System with Renewable Source,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《低温与超导》2022年第5期6-11,36,共7页Cryogenics and Superconductivity

基　　金：国家自然科学基金(51877083)资助。

摘　　要：设计了一台500 kVA/10 kV单相高温超导变压器,对其在工况下的电磁特性与温度特性进行仿真研究。根据工程经验公式给出超导变压器的铁心规格与绕组结构等重要参数,使用有限元软件建立了超导变压器的二维轴对称仿真模型,基于高温超导体的H方程与传热理论,计算超导变压器正常运行时的磁通密度、温度及交流损耗。仿真结果表明,在超导变压器绕组端部存在较大的径向漏磁通,导致端部线圈损耗较大、温度较高,需采用适当方法减小径向漏磁通。In this paper, a 500 kVA/10 kV single-phase HTS transformer was designed and its electromagnetic characteristics and temperature characteristics under working conditions were simulated. Based on the empirical formula, the core specifications and winding structure of the HTS transformer were given. A 2-D axismetrical simulation model of HTS transformer was established by the finite element software. Based on the H-equation of HTS and heat transfer theory, the magnetic flux density, temperature and AC loss of HTS transformer in normal operation were calculated. The simulation results show that there is a large radial flux leakage at the end of HTS transformer winding, which leads to the large coil loss and the high temperature. It is necessary to adopt an appropriate method to reduce the radial flux leakage.

关 键 词：高温超导变压器 漏磁通 温度分布 交流损耗 

分 类 号：TM406[电气工程—电器]