自屏蔽高温超导直流电缆的故障电流分析  

Analysis on fault current characteristics of self-shielding HTS DC cable

作　　者：成健 赵雅轩 胡力广 黄有义 周碧波 王邦柱[3] 皮伟[2] Cheng Jian;Zhao Yaxuan;Hu Liguang;Huang Youyi;Zhou Bibo;Wang Bangzhu;Pi Wei(Shenzhen Power Supply Bureau Co.,Ltd.,China Southern Power Grid,Shenzhen 518000,China;The State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]中国南方电网深圳供电局有限公司,深圳518000 [2]华北电力大学新能源电力系统全国重点实验室,北京102206 [3]北京交通大学电气工程学院,北京100044

出　　处：《低温与超导》2025年第1期9-14,共6页Cryogenics and Superconductivity

基　　金：中国南方电网重点科技项目(090000KK52222195);国家自然科学基金(52277025);北京市自然科学基金(3252022)资助。

摘　　要：由REBCO超导带制成的自屏蔽高温超导(HTS)直流电缆几乎可以消除电缆层内的磁场,这极大地提高了电流分布和磁场分布的均匀性。本文基于H公式和电缆电路模型,模拟了由REBCO超导带制成的两种不同电流方向的自屏蔽HTS直流电缆在故障电流下的电流演化特性,并且比较了限制故障电流的能力。结果表明电流方向为“正负负正”的自屏蔽高温超导直流电缆在故障电流下有较大的失超电阻,能有效限制故障电流的上升率和峰值,具有更佳的故障电流抑制性能。Self-shielding high-temperature superconducting(HTS)DC cables made of REBCO tapes can almost eliminate the magnetic field within the cable layers,greatly improving the uniformity of current and magnetic-field distributions.In this paper,based on the H equation and the circuit model of the cable,the current evolutions in two self-shielding HTS DC cables made of REBCO tapes with different current directions were simulated under fault currents and their abilities to limit fault currents were also compared.Results show the HTS DC cable with the current direction of“+--+”has a larger quench resistance,and can effectively limit the rise and peak of the fault current,showing better performance in limiting the fault current.

关 键 词：超导电缆 REBCO带材 失超电阻 故障电流 

分 类 号：TM26[一般工业技术—材料科学与工程]