I want to know about "hunting" of a generator. what's the effect of hunting in generator? what's the solution of that problem?

 

Among most Problems, Generator Hunting mainly is due to Governor Mal-Fuction. So check your Governor, Service it or if Problem exists then replace it with new one.

Also check your Pickup coil functioning.

 

Generators aren't allowed to use weapons, therefore they can't hunt.

Seriously, the prime mover is the cause for the generator output oscillations. A generator is simply a device for converting torque into amps. Is the torque input is fluctuating, the amps and therefore the generator output will oscillate.

Solve the problem with the prime mover driving the generator and the load will stabilize. Prime mover control systems are sometimes called 'governors'. It's likely some input to the control system, or the output which is controlling the steam or fuel input to the prime mover (turbine, reciprocating engine, etc.) is not working properly. Could also be the actuator on the control valve that's not working properly.

It's kind of like the computer adage: Garbage in; garbage out. If the torque input to the generator is not stable, the load of the generator will not be stable.

 

Actually Stator frequency hunts the frequency of rotor and rotor is rotated through shaft by some prime mover. The difference between the frequencies of rotor and stator is slip which is actual output of generator. When this difference increases due to many reasons like malfunctioning of governor, fuel is not supplied continuously etc, this slip value disturbs and consequently generator is not able to take load and produce noises.

 

Ask... search Control List Archives for thread # 1026226787. It may provide you with a course-of-action toward solution!

Regards, Phil Corso

 

We have the same problem of hunting which was due to one fluctuating 4-20mA flow input to turbine which resulted in fluctuating of MW, MVar etc so we removed the link of flow input which solved the problem.
Actually governor shifted to other input which was power.

 

NOT

We have the same problem of hunting which was due to one fluctuating 4-20mA flow input to turbine which resulted in fluctuating of MW, MVar etc so we removed the link of flow input which solved the problem.
Actually governor shifted to other input which was power.

Not understand your logic ..please elaborate

 

Without knowing anything about turbine generator controls, it appears from Faisal's reply that the governor has an input signal that it uses for its operation. When the governor input was an fluctuating/oscillating flow signal, the overall result was "Hunting". When the oscillating flow signal was disabled as an input to the governor, the governor used an alternative input, apparently "power", which resulted in stable operation.