二滩水电厂发电机失磁分析

Analysis on Generator Loss of Excitation in Ertan Hydropower Station

分析了二滩水电厂发电机失磁后,发电机电流、电压、相位、无功等物理量的变化过程及其保护动作的正确性,并对发电机横差保护提出改进建议。

The paper analyzes variation of generator current,voltage,phase angle,reactive power and other physical parameters after gen- erator loss of excitation in Ertan hydropower Station.The paper also analyzes correctness of protective relay operation and presents sugges- tion on improving generator's transversal differential protection.