Table of Contents
Why do we use 11 kV for voltage?
It is cheaper to generate at a relative lower voltage and then step it up for transmission. Hence, most power generating plants are designed to operate at 11KV. and hence the off load generated voltages became 3, 6, 11 + 10%.
Why we use 11kV 22kv 33kV?
Due to the form factor=1.11, so output voltage must be multiply of form factor, so we get 11,22,33. First let us define form factor before we go into the question: Also alternators are now available with terminal voltages from 10.5 kV to 15.5 kV so generation in multiples of 11 does not arise.
Why transmission is 11kV or 33kV 66kv?
But we already know that there are some voltage drop due to the resistance of the transmission lines. For this reason, they transmit 10% extra voltage. Sending Voltage = 10kV x 10% = 11kV. While the receiving end voltage are 10kV due to voltage drop.
Why do we need high voltage AC?
Adding to the colleagues above, High voltage transmission either AC or DC is necessary for reducing the conducting metallic wire size and thereby render electric power transmission feasible. The generated electric power is AC so one needs to raise its voltage for transmission by electric transformers.
How do you convert KV to volts?
To convert a kilovolt measurement to a volt measurement, multiply the voltage by the conversion ratio. The voltage in volts is equal to the kilovolts multiplied by 1,000.
What is 11kV voltage?
The voltage between any two live conductors is often referred to as the “line voltage”. For instance, in an 11kV three-phase system, the voltage between any two live conductors gives a line voltage of 11kV while the voltage between any live conductor and neutral (or earth) gives a phase voltage of 6.35kV.
What is the difference between 33kV and 11kV?
The 11kV lines are used in residential areas and is what feeds the local transformers, which then distributes power to the buildings in the area. 33kV lines on the other hand involve much higher voltages and are used to distribute power from one small sub-station to another.
Why do we use AC and not DC system in India?
Simply put, AC voltage is capable of converting voltage levels with just a transformer, making it far easier to transport across great distance than DC, whose conversion requires more complex electronic circuitry. Electric charge in AC periodically changes direction, causing the voltage level to reverse.
What is the meaning of 33 11 kV?
Thus, when a substation is of rating 66/11 kV, means substation has been designed to receive 80 MVA on 66 kV and it will distribute the received power on 11 kV. Again, substation of rating 33/11kV means, the substation has been designed to receive 5 MVA of power at 33 kV and it will distribute the same on 11 kV.
Why DC is not used in homes?
Direct current is not used at home because for the same value of the voltage, DC is more lethal than AC since direct current does not go through zero. Electrolytic corrosion is more an issue with direct current.
Which is better AC or DC?
DC power is significantly more energy efficient than AC power. DC motors and appliances have higher efficiency and power to size characteristics. DC-based lighting (LED) is as much as 75% more efficient than incandescent lighting. DC is inherently compatible with renewable sources of energy such as solar and wind.
How many volts are in a kV?
Kilovolts to volts conversion table
|Kilovolts (kV)||Volts (V)|
|0.001 kV||1 V|
|0.01 kV||10 V|
|0.1 kV||100 V|
|1 kV||1000 V|
Why are there different voltages in India 11kV and 33KV?
Why in India 11kV, 22kV, 33kV, 66kV, 132kV …. This is all the electrical engineer must know, why in India 11kV, 22kV, 33kV, 66kV, 132kV like that we have different level of voltages.
Why do we generate only 11kV voltage?
(2)Generation above 11kV:-w.r.t. increase in voltage,the current rating decreases.The increase in voltage rating corresponds to increase in insulation.Increase in insulation will increase the cost.
Why is 60kV multiple of 11 i.e 11kV?
60kV x 1.11 = 66.6kV The above calculation clearly shows that the results are different then the general values i.e. in case of 132kV, with the from factor multiplication, it is 133.2kV. In addition, We use 230V instead of 220V (Single Phase) and 400V instead of 440V (Three Phase).
Are there any voltages that are multiple of 11?
Now, we are going to explain the simple logic behind the story. First of all, It is not true that all the transmissions and distribution voltages are multiple of 11. In most case, they are multiple of 11 such as 11kV, 22,kV, 33kV, 66kV & 132kV.