Summary
In water-cooled generators, the water constitutes a primary risk to the stator winding, since leakage can result in ground faults between the stator bars and the surrounding structure. One common source of leakage is the water box joints. There are several factors that contribute to these faults, including improper soldering, end-winding vibration, and arcing at the strand wire connections. These issues can be monitored and corrected through targeted maintenance strategies. Generally, inspection of critical areas during scheduled maintenance is crucial for mitigating potential water leakage risks, especially at the stator winding connection points.
Read more Read lessHowever, the condition of stator end-winding during operation is difficult to monitor or analyse when the critical incident occurs. Therefore, the deployment of end-winding vibration sensors enables real-time monitoring of vibration behaviour during operation, thereby supporting timely and informed maintenance decisions.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | A1_12055_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Thailand |
| Study committees | |
| File size | 811 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
THAMPANYASAKUL Kraiwit
Keywords
End Winding Vibration Sensor, Generator Maintenance, Water-cooled Generators, Stator Ground Fault
