发电机定子线圈受潮接地保护动作分析与处理

Analysis and Treatment on Grounding Protection of Generator Stator Coil Affected with Damp

通过对某电厂发电机一次定子接地保护动作跳闸事件的处理,发现发电机在检修及运行期间存在一些问题,经过对发电机试验数据、曲线和继电保护分析结果,确定跳闸原因就是发电机定子线圈受潮引起的。并根据实际情况探讨和制定相应的防范措施,从而避免在今后运行和维护过程中发生类似情况,保证发电机机组运行的可靠性。

Through the processing of the tripping of generaton stator grounding protection in a power plant, it is found that there are some problems in the period of maintenance and operation of the generator, with the test data, curve and relay protection analysis, it is determined that the generator stator coil is caused by damp. Preventive measures are developped on the actual situation to avoid the same happening and to ensure the reliability of the generator unit operation.