75米三相交流高温超导电缆冷却系统  

CRYOGENIC SYSTEM FOR THE 75-m THREE-PHASE AC HIGH TEMPERATURE SUPERCONDUCTING POWER CABLE

作　　者：范宇峰[1] 龚领会[1] 徐向东[1] 张亮[1] 吴江[1] 李来风[1] 肖立业[2] 

机构地区：[1]中国科学院理化技术研究所,北京100080 [2]中国科学院电工研究所,北京100080

出　　处：《低温物理学报》2005年第A02期1068-1073,共6页Low Temperature Physical Letters

基　　金：国家科委"863"超导专项(No.2002AA306161);甘肃长通电缆股份有限公司资助

摘　　要：在继2003年完成10米三相高温超导电缆之后,我们于2004年年底成功完成了75米高温超导电缆的组装、调试和通电试运行.这两套电缆装置的低温冷却系统都是采用单相密闭液氮流程循环冷却高温超导电缆本体及终端,都是采用液氮减压制冷方式获取制冷量,借助过冷器内液氮作为冷媒把冷量传递给液氮循环系统.本文在简要介绍10米长高温超导电缆低温冷却系统基础上,重点介绍75米高温超导电缆冷却系统的试运行和在通电情况下的实验结果,并对实验数据进行热平衡分析和制冷量与液氮消耗量的分析,从而得到高温超导电缆冷却系统运行的经济性参数.After the completion of 10-m HTS power cable in 2003, the building, commissioning and electrical test of 75-m HTS power cable have been finished in the end of 2004. The close liquid nitrogen （LN2） flow was adopted to cool the HTS power cable and their terminations, and the liquid nitrogen decompression （LND） method was adopted to achieve the cooling power in both of the two cryogenic systems. Through the heat exchanger in a sub-cooler, the cooling power is transferred into the loop LN2 system. Based on a brief introduction of cryogenic system for 10-m power cable, this paper mainly present the results of cryogenic system for 75m HTS power cables in the commissioning and electrical test. In addition, we also obtained the economic parameter of cryogenic system for HTS power cable according to the analysis of the heat balance in the LN2 loop system and the relation between cooling power and LN2 consumption.

关 键 词：高温超导电缆 冷却系统 液氮减压方法 

分 类 号：TM249.7[一般工业技术—材料科学与工程] U464.138[电气工程—电工理论与新技术]