Why electrical generation done on 11KV?

Answer 1

In most countries electrical power is generated at high voltages, such as 11 kilovolts.

The reason for this is that it is much more efficient to generate and distribute electrical power at such a high voltage instead of at lower voltages.

For more information please see the answer to the Related Question shown below: 'Why is electricity transported in high voltage but not in current?'.

Another reason is something historical: in olden days when the electricity became popular, engineers had a misconception that there would be a voltage loss of around 10% in the transmission line. So, in order to get 10 kilovolts at the load point, they started sending 11 kilovolts from supply side. This is the reason. It has nothing to do with form factor (1.11).

Nowadays that reasoning has changed and we are using 400V instead of 440V, or, in Europe and other 50Hz areas of the world, 230V instead of 220V.

Answer 2

A high voltage of 11 kV - 33 kV is used for electricity transmission in order to reduce loss of power due to resistance. This is because, using a lower voltage would mean a higher current, raising resistance.

Answer 3

Though most of the loads using 415V or 110V, the generation is done 11kv.Becoz most of the generating station is far away from the loads. to overcome the voltage drops that occur in the transmission lines.. 11kV generation is being in practice

Answer 4

In distribution we have 11 kV factors as supply/step down voltages: 11kV 33kV 132kV 220kV but after that you are not factoring 400kV (380kV) & 800 kV (765kV) and I would like some one to help me getting this factoring understand.

Answer 5

bkoz the voltage generated depends up on the FORM FACTOR
in India the FORM FACTOR is 1.1
so, the generated voltage is multiple of 1.1
hence the
generating Transformers are in 11kv

Answer 6

This question concerns the generation of electricity.

The actual generators at a (New Zealand) hydro power station operate at 11kV. This provides a compromise between the insulation requirements for the operating environment, and the quantity of current being generated, which affects wire size and weight of rotating machine. At the station's "switch yard" this is transformed to 220kV for long distance transmission.

Further notes about the distribution of electricity

The voltage drop along a conductor is proportional to the resistance and to the current carried. (V=IxR) So, for a given quantity of Power (W=VxI), if the voltage is very high there will be less current and therefore less power loss.

In some countries 415kV (kilovolts), and in others 220kV, are common wide-area transmission voltages, and there are several commonly used "step down" voltages between these and household voltages of either 230V (50Hz) or 240/120V (60Hz).

Answer 7

In the UK, 11 kV is not a transmission voltage, but a secondary distribution voltage. In the UK:

• transmission voltages: 400 kV, 275 kV
• primary distribution voltages: 132 kV, 66 kV, 33 kV
• secondary distribution voltage: 11 kV
• tertiary distribution voltages: 400/230 V

Answer 8

we know the form factor is rms

value / avg value is =

1.11,for sinusoidal waveform. so due to this reason it always in 11 multiple