6、基波零序电压与三次谐波电压分开处理;第二种形式无需将两者分开,直接把机端和中性点两侧零序电压故障暂态分量的和与差作为保护动作信号与制动信号,通过比较相应信号的谱能量大小检测定子单相接地故障。 关键词:发电机,接地故障,零序电压,故障暂态分量,谱能量,定子单相接地保护 ,23贵州大学本科毕业论文(设计)Project of Simulation and Protection for Stator Ground Fault Synchronous generator AbstractThe ground faults in the generator stator are by f
7、ar common faults to which generators are subjected. Internal short-circuit faults, which may immediately damage generator, are always preceded by the ground faults. The possibility of internal fault and damages caused by it can be decreased largely