What is generator inverse power protection?

When the main valve of the turbine generator is closed for some reason, the turbine is in a state of no steam operation, at this time the generator turns into a motor to drive the turbine rotor rotation, the high-speed rotation of the turbine blade will cause wind wear loss, especially in the tail end of the blade may cause overheating, resulting in turbine rotor blade damage accident. (It can be understood as the protection of turbine blades)

1000kw load bank
 

What is generator programmed reverse power protection

To prevent the generator with a certain amount of active power, suddenly cut off the main circuit breaker and the main valve is not all closed, at this time the turbine generator may appear overspeed and racing accidents. In order to avoid such accidents, the main valve of the steam turbine should be closed first after operation for certain types of protection that are not short circuit faults (loss of magnetic protection, out of step protection, generator water cut off, main transformer cooler failure, heat engine protection, etc.). After the reverse power relay of the standby motor is operated, the auxiliary contact connected with the main valve is composed of and gate. After a short time, the inverse power protection of the program is formed, and after the operation, it acts on the full stop.