水轮发电机不同材料灭磁电阻特性研究  

Research on De-Excitation Resistance of Different Materials for Hydro-Generator

作　　者：胡思宇 刘守豹 陈小明 钟建 宋佳骏 HU Si-yu;LIU Shou-bao;CHEN Xiao-ming;ZHONG Jian;SONG Jia-jun(Datang Hydropower Science&Technology Research Institute Co.,Ltd,Nanning 530007,China)

机构地区：[1]大唐水电科学技术研究院有限公司,广西南宁530007

出　　处：《电工电气》2023年第2期34-40,共7页Electrotechnics Electric

摘　　要：发电机组常采用灭磁电阻进行灭磁,不同灭磁电阻具有不同的电气特性。分析了水轮发电机灭磁过程,并利用电磁暂态分析软件ATP-EMTP建立了水轮发电机灭磁仿真模型,在考虑转子铁芯饱和对灭磁过程影响前提下,对不同类型电阻的灭磁性能进行了比较。仿真结果表明,非线性灭磁电阻的灭磁性能优于线性灭磁电阻,为发电机灭磁电阻的选型、设计、制造及故障分析提供了参考。The generator set usually uses de-excitation resistors to erase magnetism,and different de-excitation resistors have different electrical characteristic.The paper makes analysis of the magnetism erasing of hydro-generators,employs the electromagnetic transient analysis software ATP-EMTP to build a hydro-generator de-excitation simulation model.Considering the influence of rotor core saturation on magnetism erasing,the de-excitation properties of different types of resistors are compared.According to the simulation results,the magnetism erasing of non-linear resistors is better than that of linear resistors,which provides reference for the selection,design,manufacturing and fault analysis of de-excitation resistors for generator sets.

关 键 词：水轮发电机 励磁电流 灭磁电阻 电磁暂态分析 

分 类 号：TM312[电气工程—电机]