Answer / rohit chandan

The main purpose of Automatic Voltage Regulator (AVR) is to
control the excitation to limit the terminal voltage of
synchronous generator at reference level.The excitation
system of a Turbo generator contains the exciter and the
AVR. AVR acts upon DC Vf that supply excitation to the
synchronous generator.

Answer / d oldham

The synchronous generators used do not naturally operate at
any particular voltage but the voltage can be adjusted by
manually setting the excitation. However as soon as any
load is put on the generator a different value of
excitation is required. The AVR automatically makes the
necessary adjustment by closed loop control to keep the
generator voltage constant. The operator can manually
adjust the AVR reference to allow connection to a power
system. Once connected to a large power system the AVR
setting determines the reactive power load kVAR on the
generator. A high setting exports kVAR (lagging power
factor) and a low setting imports kVAR (leading power
factor).

Answer / mohan kumar

AVR is used to maintain the generator voltage the exciter system w.k.t the exciter give excitation to generator field wdg the the output of AVR is fed to exciter and exciter output voltage is converted to DC through RDFR and it feeds the DC volt to generator field WDG

Answer / raja

Any one have a book 📖 for the fundamental electrical structure of an thermal power plant.... Please send me @rajako0202@gmail.com

Answer / nelson mathew

regulat theminal voltag

The neutarl to earth voltage in system is 7volts on Electricity power but it lowers to 1.3volts when load transfered to DG power.what may be the reason.

3 Answers  

How to set the relay,,??

0 Answers   Megatron Solutions, Nestle,

I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

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what is the need of representing AC power in sinusoidal waveform? why not in square or rectangular etc...

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What is the function of UV coil ACB?

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why generally transformer are in star to delta or delta to star used?

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why do we prefer -48 volt instead of -24volt or -12 volt etc. ??

1 Answers  

How can we save electrical cost i.e switchgear, wiring, conduiting etc in a room?

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want happens when a dc is given to a commutator

2 Answers