Electrical Engineering - When there is a sudden loss in the demand what happens to the transformer and generation?

GeekInterview.com > Engineering > Electrical Engineering

Go To First | Previous Question | Next Question

Electrical Engineering | Question 34 of 239

When there is a sudden loss in the demand what happens to the transformer and generation?

Total Answers and Comments: 4

Last Update: August 29, 2009 Asked by: kAVITA

Sponsored Links

Best Rated Answer

—

Submitted by: Abhijit_atrangi

When their is sudden loss in demand nothing is happened neither with generation nor with transformer cause while designing transformer andÂ generator the max. load in the area for whichÂ generator and transformer are going to used is considered.Â When tranformer is on no load it will supply only core losses.

Above answer was rated as good by the following members:
pawansingh, shobhit bansal, anupam_srivastav

July 24, 2007 09:07:32

Anandkumar Modakwar

Member Since: July 2007 Contribution: 3

RE: When there is a sudden loss in the demand what hap...

May be but not sure. there'll not be any harm to the Transformer & nothing to worry about the generation.
In case if there is increament in demand there may be a extra load on the generator & it may damage the transformer.

Is this answer useful? Yes | No

0 3

Overall Rating: -3

July 30, 2008 07:12:31

Abhijit_atrangi

Member Since: July 2008 Contribution: 22

RE: When there is a sudden loss in the demand what happens to the transformer and generation?

When their is sudden loss in demand nothing is happened neither with generation nor with transformer cause while designing transformer and generator the max. load in the area for which generator and transformer are going to used is considered. When tranformer is on no load it will supply only core losses.

Is this answer useful? Yes | No

1 2

Overall Rating: -1

July 19, 2009 07:18:46

spcspc1654

Member Since: July 2009 Contribution: 1

RE: When there is a sudden loss in the demand what happens to the transformer and generation?

When there is a sudden loss in the demand then there is over-excitation of the generation and the power factor is increased. Also the rotor angle of generator is changed (unstable) for a while.

Is this answer useful? Yes | No

August 29, 2009 10:36:17

csbalu

Member Since: August 2009 Contribution: 3

RE: When there is a sudden loss in the demand what happens to the transformer and generation?

When there is a sudden loss of load The Generator terminal voltage increases due to the fact that the IX drop in the generator winding decreases. The EMF generated being the same the reduced reactance loss leads to a sudden rise in generator voltage..but the AVR (Automatic Voltage Regulator) will act instantly to bring this voltage to the set value by reducing the excitation.
There is practically no effect of this on the transformer barring the reduction in I2R (copper Losses) and reduced IX drop.

Is this answer useful? Yes | No

2 0

Overall Rating: +2

Go To Top

User Name		Remember Me?
Password

Question Bank