Table of Contents
Why is generating voltage 11kV?
Generally, high voltages like 66kv or more than that are generated when the power is transmitted over larger distance. When the power is to be transmitted to shorter distances, power stations use 11kv. The specific reason for that is as the distance to be covered increases, so does the resistance of the wire.
Why is India generating voltage is 11kV?
The voltage is generated at 11 KV because it requires less insulation in comparison to the generation of voltage at above 11 KV. The high voltage rotating machine may not be so reliable as compared to the low voltage rotating machine.
Why 11kV is used in distribution system?
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. This power can then be safely distributed in order to power a town near the transformer.
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. In case of a sinusoidal wave, the form factor is approximately 1.11. The reason is something historical.
Which conductor is used in 11kV line?
ACSR Conductors
The other types of conductors (mentioned from S. No. 3 to 7 are all ACSR Conductors and are commonly used on 11kv lines, except Dog conductors.
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.
What voltage is 11kV?
High voltage (HV) – means and voltage exceeding 1kV a.c. or 1.5kV d.c. Extra high voltage (EHV) means any voltage exceeding 220kV….Standard line voltages.
| Line Voltages | Usage |
|---|---|
| 11kV | Used for urban and rural HV distribution |
| 22kV | |
| 12.7kV (SWER) | |
| 22kV |
How much current is in 11kV line?
Take a 11kV/415v, 500KVA distribution system. Then maximum current on HV side = 500/{sqrt(3) * 11} = 26.24 A. maximum current on LV side = 500/{sqrt(3) * 0.415} = 695.6 A.
What is the full form of ACSR?
Aluminium conductor steel-reinforced cable (ACSR) is a type of high-capacity, high-strength stranded conductor typically used in overhead power lines.
Why is the voltage generated at 11 kV?
The voltage is generated at 11 KV because it requires less insulation in comparison to the generation of voltage at above 11 KV. The high voltage rotating machine may not be so reliable as compared to the low voltage rotating machine.
Why do power stations use 66kV instead of 11kV?
Generally, high voltages like 66kv or more than that are generated when the power is transmitted over larger distance. When the power is to be transmitted to shorter distances, power stations use 11kv. The specific reason for that is as the distance to be covered increases, so does the resistance of the wire.
Why does power generation below 11kV cost more?
(1)Generation below 11kV:- As the voltage dcreases,current increases.In order to carry high current,thickness of conductors increases.So ,size increases & thereby cost increases.
Why is a 33kV generator used in a 11kV plant?
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. To generate at 33KV, the size of the motor might be twice as large as the size of 11KV generator.
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