超导限流器变电站运行低温系统设计与实验  

Cryogenic System Design and Test for Magneto-biased Superconducting Fault Current Limiter Operating at Substation

作　　者：韦德福 刘钧迪 诸嘉慧 吴晗序 金涌川 杨秀峰 WEI Defu;LIU Jundi;ZHU Jiahui;WU Hanxu;JIN Yongchuan;YANG Xiufeng(Liaoning Dongke Electric Power Co.,Ltd,Shenyang 110179,China;Electric Power Research Institute,State Grid Liaoning Electric Power Co.,Ltd,Shenyang 110006,China;China Electric Power Research Institute,Beijing 100192,China;State Grid Liaoning Electric Power Co.,Ltd,Shenyang 110004,China;Materials Branch,State Grid Liaoning Electric Power Co.,Ltd,Shenyang 110006,China)

机构地区：[1]辽宁东科电力有限公司,沈阳110179 [2]国网辽宁省电力有限公司电力科学研究院,沈阳110006 [3]中国电力科学研究院有限公司,北京100192 [4]国网辽宁省电力有限公司,沈阳110004 [5]国网辽宁省电力有限公司物资分公司,沈阳110006

出　　处：《电力系统及其自动化学报》2025年第4期40-45,共6页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金面上资助项目(52277030);辽宁东科电力有限公司科技项目(2303)。

摘　　要：磁偏置超导故障限流器在低温环境运行,需在并网运行时额外配置低温辅机系统。本文通过低温热力学理论计算,分析超导故障限流器低温系统的整体稳态热负荷分布规律,提出低温系统布局和低温液氮控制方式,并在变电站现场进行超导故障限流器的系统集成。超导故障限流器在变电站的低温运行和并网测试结果表明,该低温系统具备良好的自持运行效果,可保障超导故障限流器的稳定运行。Due to the low-temperature operating condition,a magneto-biased superconducting fault current limiter(SF-CL)needs to be equipped with an additional cooling auxiliary system during its grid-connected operation.In this paper,through the theoretical calculation of low-temperature thermodynamics,the overall steady-state heat load distribution in a cryogenic system for the SFCL was analyzed,and the layout of the cryogenic system and the control mode of cryogenic liquid nitrogen were proposed.Then,the SFCL was on-site integrated into a substation.The low-temperature operation and grid-connected test results of the SFCL at the substation show that the cryogenic system has a good self-sustaining operation effect and it can ensure the stable operation of the SFCL.

关 键 词：磁偏置超导故障限流器 低温系统 热负荷 并网试验 

分 类 号：TM725[电气工程—电力系统及自动化] TM471