1MJ超导储能-限流磁体暂态脉冲过程的传热规律研究  

Investigation on heat transfer law during the impulsive transient process of HTS magnet for a 1MJ SMES-FCL

作　　者：丁立晴[1] 张京业[2] 辛昭昭[1] 张润理[1] 王玉平[1] 李侠[1] 戴少涛[2] 

机构地区：[1]西安高压电器研究院有限责任公司,西安710075 [2]中国科学院电工研究所,北京100080

出　　处：《低温与超导》2015年第12期1-5,30,共6页Cryogenics and Superconductivity

基　　金：国家863项目(2013AA050803)

摘　　要：超导储能-限流磁体的运行需承受短时大电流冲击的极端条件,如此快速变化的电流和磁场会诱发磁体快速产生大量的损耗,这些损耗最终以热的形式释放出来。由于制冷机传导冷却速率低,热的传导远远滞后于生热率,势必造成磁体的局部温升,甚至危及磁体安全。文中针对以上暂态脉冲过程,建立了暂态热仿真的微观模型,在时间和空间上揭示了磁体内部的传热规律。在此基础上,研究了极端运行工况下的超导带材温升情况及其临界电流的衰减程度,为磁体设计提供了理论依据。The HTS magnet of SMES-FCL（ Superconducting Magnetic Energy Storage-Fault Current Limiting） could be shocked by high and short-time current during the operational process. These fast-changing current and magnetic field will make the magnet generate a lot of loss quickly,which will be released as heat finally. While the rate of conduction lags far behind that of heat generation,the temperature of the partial magnet will consequently increase due to the lower conduction-cooled rate of the refrigerator,which even affects the safety of the HTS magnet. This paper established a micro model of the impulsive transient process in order to simulate the transient thermal performance of the HTS magnet. The heat transfer law inside the magnet was investigated from the aspects of time and space. Furthermore,the temperature rise of superconducting tapes and attenuation degree of critical current under extreme operational conditions were also investigated,which could provide theoretical basis for the design of the HTS magnet.

关 键 词：传导冷却 高温超导磁体 暂态脉冲 传热规律 

分 类 号：TM712[电气工程—电力系统及自动化]