汽轮发电机定子绕组内部故障规律和保护方案的研究

随着电力工业的发展，大容量汽轮发电机内部故障保护的重要性不断增加，迫切需要对汽轮发电机定子绕组内部故障进行深入研究。文中应用编制的电机仿真程序计算发电机在各种内部不对称短路故障情况下的过渡过程，讨论各故障特征量的变化规律。根据动模试验和仿真计算的结果对现有的各种机组保护方案优缺点进行对比分析，最后提出大型汽轮发电机定子绕组内部短路的主保护方案。

THE INTERNAL FAULT ANALYSIS AND PROTECTION SCHEME OF THE TURBOGENERATOR ARMATURE WINDINGS

Along w ith the developm ent of electric pow er industry, the internal fault protection of turbogenerator becom es m ore im portant. As a result, further study on the operation ofthe turbogenerator w ith internalfaults in stator windings is required. This paper presents the sim ulation and calculation of the transient process of the turbogenerator w ith arm ature asym m etry through sim ulation program s, and discussesthechangesofseveralfaultcharacteristics. On thebasisofsim ulation and experim ental results, this paper also m akes a com parison am ong severalgenerator protection schem es in current use. Finally, the protection schem es forthe internalfaults ofthe large turbogenerator are proposed.