电阻型高温超导限流单元设计与试验  

Design and test of a resistive high-temperature superconducting fault current limiter unit

作　　者：马倩 窦飞 刘柏良 马韬[3] 徐莹 戴少涛[3] Ma Qian;Dou Fei;Liu Bailiang;Ma Tao;Xu Ying;Dai Shaotao(Jiangsu Provincial Electric Power Corporation,Nanjing 210000,China;Research Institute of Economics and Technology,Jiangsu Provincial Electric Power Corporation,Nanjing 210000,China;School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]国网江苏省电力有限公司,南京210000 [2]国网江苏省电力有限公司经济技术研究院,南京210000 [3]北京交通大学电气工程学院,北京100044

出　　处：《低温与超导》2020年第10期41-44,78,共5页Cryogenics and Superconductivity

基　　金：国网江苏省电力有限公司科技项目(J2018004)资助。

摘　　要：在电网中,快速响应并处理超标的故障电流是亟待解决的一个重要问题。基于超导体状态转变特性的电阻型超导限流器具有结构简单、抗扰动能力强、对系统影响小等优势,是抑制故障电网故障电流的一种具有发展潜力的使能技术。本文基于模块化思路,使用"八卦形"拓扑设计了电阻型超导限流模块,以16个模块并联形成电阻型超导限流单元。通过额定通流试验和大电流冲击试验,考核了限流单元的额定载流能力。结果表明,被试超导限流单元额定通流条件下运行稳定;暂态大电流冲击下可在5 ms内响应故障,具有良好的限流效果。In the power grid,it is an important issue to quickly respond to and deal with fault currents exceeding standards.Resistive superconducting current limiters based on the state transition characteristics of superconductors have the advantages of simple structure,strong anti-disturbance ability and small impact on the system.They are an enabling technology with potential for suppressing fault current in faulted power grids.Based on the modular idea,this paper used a"gossip"topology to design a resistive superconducting current-limiting module.16 modules were connected in parallel to form a resistive superconducting current-limiting unit.Through the rated current test and high current impact test,the rated current carrying capacity of the current limiting unit was evaluated.The results show that the tested superconducting current-limiting unit operates stably under the rated flow conditions;it can respond to faults within 5 ms under transient large current shocks,and has good current-limiting effects.

关 键 词：高温超导 限流器 电阻型 额定通流 大电流冲击 

分 类 号：TM471[电气工程—电器] TM26[一般工业技术—材料科学与工程]