ters
Electrical
- Nov 24, 2004
- 247
This LM6000 project, with a gearbox (50 Hz). Suppose the following scenario:
The turbine shuts down for some reason other than electrical fault on the generator side. The GT control system will then trip the generator protection and the generator breaker. However, generator breaker fails to open. The generator remains on the grid since breaker failure zone trip scheme is not implemented. Generator happily continues to run as a an induction motor while the turbine is shut down. This condition persist until other breakers contributing to the same bus are open manually.
What are mechanical consequences in this case - may any major turbine or gearbox damage occur? Thank you.
The turbine shuts down for some reason other than electrical fault on the generator side. The GT control system will then trip the generator protection and the generator breaker. However, generator breaker fails to open. The generator remains on the grid since breaker failure zone trip scheme is not implemented. Generator happily continues to run as a an induction motor while the turbine is shut down. This condition persist until other breakers contributing to the same bus are open manually.
What are mechanical consequences in this case - may any major turbine or gearbox damage occur? Thank you.