Why Generation is 11KV in the power stations?

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. Therefore in order to compensate for this, the primary generation voltage would be; the required nominal voltage + transmission losses.

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.

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 is the generating voltage in the power station?

Turbines/Generator Inside the generator is a magnetic field which produces voltage—or electricity at approximately 15,000 volts (V).

What is 11kV feeder?

A three- phase, three-wire distribution line operating at 11 kV, known as a feeder, begins at the primary substation, and traverses the rural areas through villages and agricultural areas, serving a mixed customer base of agriculture, households and small businesses.

What is 11kV 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.

Where is 11kV used?

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.

What conductor is used for 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.

Is 11kV High Voltage?

Specifically, ANSI C84. 1-2020 defines high voltage as 115 kV to 230 kV, extra-high voltage as 345 kV to 765 kV, and ultra-high voltage as 1,100 kV. In electric power transmission engineering, EHV is classified as voltages in the range of 345,000– 765,000 V.

What is 11kV substation?

11 KV Substation. Pole-Mounted Sub-Station: 1. It is a distribution sub-station placed overhead on a pole. It is the cheapest form of substation as it does not involve any building work.

Why 11kV is 240v generally used?

The increase in voltage rating corresponds to increase in insulation. Increase in insulation will increase the cost. So,the electricity is generated at a voltage in between the higher &lower voltages i.e,11kV.So that the losses due to both voltages are minimum i.e,thickness & insulation is minimum.

How do you measure 11kV voltage?

In ancient times when we needed to use 10 kV at destination, simply multiplied the form factor to it Say 1.11X10=1.11 =11KV aprox. (we had taken 10\% losses as standard thumb rule) similarly for 30 & 60 KV. Form Factor = RMS voltage/Average Voltage For AC sine wave Form Factor is 1.11.

Why generation voltage in power plant is low(11kV to 33kV)?

Why Generation Voltage in Power Plant is Low (11kV to 33kV)? Generally electrical power is generated at low voltages (generation voltage will be around 11 to 33kV) depending on the power output rating of the generator and transmitted to the load centers by stepping up the generating power through step-up transformer.

Why transformer and substation rating is mentioned in 33kV / 11kv/11kv?

Why the transformer and substation rating are mentioned in 33kV / 11kV , 11kV/440V and so on. In case of no load, there may be negligible voltage drop and we may get 110\% (i.e. Sending + 10\% extra which is 11kV) voltage at the receiving point. For this reason, transformer and substation should be rated at full 110\% which is 11kV, 22kV and so on.

What is the normal distribution voltage of a power line?

Most distribution voltages are between 4 and 35 kV. In this article, unless otherwise specified, voltages are given as line-to-line voltages; this follows normal industry practice, but it is sometimes a source of confusion. Primary Distribution Voltage Levels. The four major voltage classes are 5, 15, 25, and 35 kV.

Is it true that all transmission and distribution voltages are multiple 11?

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.