饱和铁芯型超导限流器的高温超导磁体的磁场仿真分析  

STUDY ON MAGNETIC FIELD FORHIGH TEMPERATURE SUPERCONDUCTING MAGNET OF SATURATED IRON-CORE SUPERCONDUCTING FAULT CURRENT LIMITER

作　　者：郝溪 罗映红[1] 黄林柯 史冬蓓 李重阳[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《低温物理学报》2015年第4期306-310,共5页Low Temperature Physical Letters

基　　金：金川公司预研基金(批准号:JCYY2013003)资助的课题

摘　　要：高温超导磁体是饱和铁芯型高温超导故障限流器的核心部件之一,通过超导磁体对铁芯进行直流励磁,控制铁芯的饱和状态,从而限制故障电流.本文以35kV/90MVA饱和铁芯型高温超导故障限流器的超导磁体为研究对象,通过ANSYS有限元软件建立44个双饼线圈的单螺管型磁体的二维电磁模型,得到不同结构磁体产生的磁场,特别是径向磁场的变化规律,结果表明,采用端部并联结构可以有效降低磁体端部径向磁场分量,提高临界电流,该结果为研究饱和铁芯型高温超导故障限流器的电磁特性、磁体励磁能力和结构设计提供一定的参考依据.High Temperature Superconducting Magnet is one of the core components of Saturated Iron-Core Superconducting Fault Current Limiter, the superconducting magnet dc excitation was carried out on the core to control the saturation state of the core to limit the fault current. In this paper, the High Temperature Superconducting Magnet of 35kV/90MVA Saturated Iron-Core Superconducting Fault Current Limiter is the main study object, with ANSYS finite element analysis software, modeling a two-dimensional electro-magnetic analysis of 44 double pancakes to get the magnetic field distribution of different structure, specially get the radial magnetic field distribution. It is presented that the critical current was improved by reducing the radial magnetic component with five double pancakes connecting in parallel. The results of the analysis provide a reference for Saturated Iron-Core Superconducting Fault Current Limiter of the electro-magnetic characteristics and magnet of excitation ability and structure design.

关 键 词：饱和铁芯型高温超导故障限流器 单螺管型磁体 径向磁场 ANSYS 

分 类 号：O511.3[一般工业技术—材料科学与工程]