饱和铁芯型高温超导故障限流器漏磁场分析与等效磁路模型的建立

摘要

在分析饱和铁芯型高温超导故障限流器(Saturated iron-core superconducting fault current limiter, SISFCL)基本结构的基础上，建立由44个双饼组成的单螺管型超导绕组的限流器三维模型；利用三维有限元方法(Finite element method, FEM)计算限流器漏磁感应强度的大小和方向，得到了漏磁的分布特点；采用磁场分割的方法建立了考虑漏磁影响的 SISFCL 等效磁路模型；最后将仿真计算结果与实测结果进行对比，验证了所建立的等效磁路模型的有效性。%In this paper, the basic structure of saturated iron-core superconducting fault current limiter (SISFCL) was analyzed and 3D model of the limiter whose superconducting coil was comprised of 44 double pancake rings was established. The magnetic flux leakage distribution of the limiter was calculated by using the finite element method (FEM), the distribution characteristics of leakage magnetic field was analyzed. The equivalent magnetic circuit model was built with magnetic field division method with the magnetic flux leakage. The simulation was compared with the test results. The results show that the equivalent magnetic circuit model is valid. This has a certain reference value for the design and application of SISFCL.