检测发电机转子匝间短路故障的方法

Inspecting Methods of the Interturn Fault of Electric Motor Rotor

分析考虑饱和条件下的转子匝间短路故障模型,找到励磁电流和发电机无功功率损失之间的关系以及故障严重程度、励磁电流变化之间的关系,提出借助于转子侧故障前后励磁电流相对变化率识别匝间短路故障的一种有效方法。

By analyzing the models with rotor interturn fault in the saturation condition,the paper finds out the relationship between the exciting current and generator reactive power loss and the relationship between the fault serious level and the exciting current,then puts forward an effective method by the relative ratio of the exciting current before and after fault in the rotor side to identify the interturn short circuit fault.