Why the output of generator varies eventhough the shaft
speed is constant in thermal power plant?

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Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?..

Answer / abhishek-gaur

n=120f/p

i.e speed dirctly proprtnal to freq
when load is increasd , speed decreases, so the frequncy ,
frequncy has to be maintained within a limit to prevent
appliances from failure...

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Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?..

Answer / nethaji

I do know

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Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?..

Answer / k.prakashchandra

There is some defect in governor or pressure tank.When the
gen is connected to grid the speed remains constant as the
grid determines the speed.Check pf meter for fluctuations
also.These are teething problems in newly commissioned
gen.If the AVR is defective there will be fluctuations in
pf but not load

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Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?..

Answer / pandiya

due to stepup or stepdown transformer is my opinion

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Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?..

Answer / hardik085gmdc

It is ALL controlled by automatic voltage regulator,when we increase steam flow in turbine, stator current increase so generator terminal voltage decreased then for increasing voltage A.V.R increase excitation voltage and current SO MW INCRESE. OK

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