发电机匝间保护误动作的分析及处理

Analysis and dispose of generator interturn protection misoperation

发电机变压器组成套保护装置采用发电机纵向零序过电压及故障分量负序方向型匝间保护，当发电机出口电压互感器一次熔断器熔断时保护会误动，经过分析此类型的匝间保护原理及逻辑框图，通过整改及运行调整等相应措施．避免发电机匝间保护误动作跳闸。

Generator transformer protection device adopted the generator longitudinal zero - sequence overvohage and fault component negative sequence direction interturn protection, when the generator output voltage transformer of a fuse fuses, protection could faultily operated. By analysis of this type of interterm protection principle and logic diagram, through reforming and operating adjustment and corresponding measures, can avoided generator interturn protection disoperation trip.