磁控超导限流器直流绕组结构改进方法仿真研究  

Simulation research on improvement of DC winding Structure of magnetron superconducting current limiter

作　　者：耿延 姚磊 常路宇 GENG Yan;YAO Lei;CHANG Luyu(School of Optical-Electrical and Computer Engineering,University of Shanghai forScience and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《电力科学与工程》2018年第9期7-13,共7页Electric Power Science and Engineering

摘　　要：通过改变直流绕组结构,可以改变磁控超导限流器(饱和铁心型)磁场分布,有利于减小励磁成本。提出了一种具有新型直流绕组结构的磁控超导限流器,按照设计要求对铁心与线圈的主要参数进行了详细设计。针对超导绕组的电磁特性提出了改变直流绕组的结构及采取不均匀绕制方法,用以减小超导绕组分布的磁场强度,增大其通流能力的方法。通过ANSOFT有限元分析软件分析了限流器不同结构下的磁场强度分布及最后的限流效果。仿真结果表明,改变限流器直流绕组结构,能有效增大交流侧磁饱和程度,减小直流超导绕组磁场分布,增大其通流能力,磁控超导限流器限流能力满足预期要求。By changing the DC winding structure,the magnetic field distribution of a magnetically controlled superconducting current limiter（ saturated core type） can be changed,which is beneficial to equipment operation and can reduce the excitation cost. In this paper,a magnetron superconducting current limiter with a new type of DC winding structure is proposed. The main parameters of the core and the windings are designed in detail for the design requirements. According to the electromagnetic characteristics of superconducting windings,we proposed to change the structure of DC windings and adopt non-uniform winding methods to reduce the magnetic field strength of superconducting windings and increase their flow capacity. The ANSOFT finite element analysis software was used to analyze the magnetic field intensity distribution and the final current limiting effect of different structures of the current limiter. The simulation results show that changing the DC winding structure of the current limiter can effectively increase the degree of magnetic saturation on the AC side,reduce the magnetic field distribution of the DC superconducting windings,and increase the flow capacity of the DC superconducting windings. In such way,the current limit capability can meet expectations.

关 键 词：饱和铁心 直流超导绕组 有限元分析 不均匀绕制 

分 类 号：TM73[电气工程—电力系统及自动化]