同步发电机短路故障研究

Study on Short Circuit Fault of Synchronous Generator

同步发电机是电力系统中最重要和最复杂的元件,由多个具有电磁耦合关系的绕组构成。同步发电机突然短路的暂态过程所产生的冲击电流可能达到额定电流的十几倍,对电机本身和相关的电气设备都可能产生严重的影响[1-3],特别是同步发电机的三相突然短路会对电力系统造成巨大危害。通过数学建模并对同步发电机三相突然短路故障进行仿真实验,根据仿真结果对理论分析加以验证。

Three-phase sudden short circuit of synchronous generator will cause great harm to power system.In this pa- per,a mathematical model is established to simulate the three-phase short-circuit fault of synchronous generator,according to the simulation results,the theoretical analysis is verified.