高温超导方形细线的交流损耗特性研究  

Study on AC loss characteristics of high-temperature superconducting square wires

作　　者：张龙[1] 史正军 宋萌 李柱永 席东民[1] 梅桂华 Zhang Long;Shi Zhengjun;Song Meng;Li Zhuyong;Xi Dongmin;Mei Guihua(School of Electric Power,Inner Mongolia University of Technology,Hohhot 010000,China;Key Laboratory of Power Superconducting Technology of Guangdong Power Grid Co.,Ltd,EPRI of Guangdong Power Grid Co.,Lid,Guangzhou 510080,China;School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]内蒙古工业大学电力学院,呼和浩特010000 [2]广东电网有限责任公司电力超导技术研究重点实验室,广东电网有限责任公司电力科学研究院,广州510080 [3]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《低温与超导》2020年第6期51-54,76,共5页Cryogenics and Superconductivity

基　　金：南方电网公司科技项目(GDKJXM20172779)资助。

摘　　要：当前超导电缆能否实现大规模应用还面临着多项关键技术问题,进一步改进超导电缆的结构和绕制技术、进一步降低交流损耗就是其中的两个方面。将多根高温超导方形细线(Soldered-Stacked-Square HTS wire)通过并联形成一根双根结构的高温超导缆线,采用电测量法,在77 K、零外场及不同频率条件下,对高温超导方形细线通以不同运行电流时产生的交流传输损耗进行测量,可以获得双根高温超导方形细线的交流损耗与传输电流频率之间的关系,结果表明两者无关,并且超导方形细线的双根并联结构对减小线材的交流损耗能够产生一定影响。At present,there are many key problems in the large-scale application of superconducting cable.Further improving the structure and winding technology of superconducting cable and further reducing AC loss are two aspects.Multiple high-temperature superconducting square wires(Soldered-Stacked-Square HTS wire)are connected in parallel to form a high-temperature superconducting cable with double-strand structure,in this paper,an electrical measurement method was used to measure the AC transmission loss of high temperature superconducting square wires under the condition of 77 K,zero external magnetic field and different frequencies.Guided square wires were measured with the AC transmission loss generated at different operating currents,and the relationship between the AC loss of two high-temperature superconducting square wires and the frequency of the transmission current could be obtained.The results show that they are irrelevant and the double parallel structure of superconducting square wires can have an effect on reducing the AC loss of the wire.

关 键 词：高温超导方形线 临界电流 交流损耗 频率特性 

分 类 号：TM249.7[一般工业技术—材料科学与工程]