大型水轮发电机转子金属性一点接地真机故障模拟与快速查找试验

Real-machine Simulation of the Metallic One-point Grounding Faults of Large-scale Hydro-turbine Generator Rotor and Fast Detection Experiment

为了缩短发电机转子一点接地故障查找时间,保障机组等效可用系数,减少因故障停机造成的电量损失,通过在大型水轮机上真机模拟不同类型的转子金属性一点接地故障,比较各类故障查找方法的有效性、准确性及快速性,从而针对不同类型故障制定最为有效的查找方法。

In order to reduce the detection time for the one-point grounding faults of the generator rotor, improve the equivalent unit availability coefficient and reduce the power loss due to maintenance shutdown, real-machine simulation of the metallic one-point grounding faults of the generator rotor is carried out in large-scale hydro-turbine generator unit. The effectiveness, accuracy and rapidity of various fault detection methods are compared. Then, the most effective fault detection methods are formulated for different type of faults.