摘  要：定子绕组匝间短路是同步发电机一种很常见的内部故障。该文通过分析推导建立了发电机定子绕组发生匝间短路的故障模型，采用二维有限元方法借助Maxwell 2D软件进行了内部磁场的仿真分析，并利用快速傅里叶变换获得了其端电压故障前后频谱对比分析表，总结了发生匝间短路时的故障特征，为发电机早期的故障预测提供了依据。
关键词：同步发电机；匝间短路；有限元方法；Maxwell 2D；快速傅里叶变换

Abstract: Stator winding short-cuts faults are one of the most common internal faults of synchronous generator. Stator winding short-cuts fault model was established through analysis. Based on finite element method, internal magnetic field simulation and analysis were implemented using Maxwell 2D and terminal voltage frequency spectrum was analysed by FFT method. The characteristics of stator winding short-cuts faults were summerized, which lay a solid foundation for generator earlier faults prediction.
Key Words: Synchronous generator; Stator winding short-cuts; Finite element method; Maxwell 2D; FFT