Electrical Power System - Electrical C & V

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25 March 2020

Electrical Power System

Power System

Electrical energy is generated in a power station (Hydro electric, Thermal electric or nuclear electric). They are usually located at a much greater distance from the load center, therefore a wider network of conductors is required for the transfer of power between the power station and the consumer.
This conductor network is mainly divided into two parts.

1- Transmission system and
2- Distribution system
   
The generation, transmission and distribution system of electrical power is called electrical power system.
Electrical power system can be well understood by the picture below



power system
Electrical Power System
   

Generation Station

A generation station is a station in which electrical energy is generated.



GENERATION STATION
                                         


Today's generation voltage is 3.3 kv, 6.6 kv, 11kv, and 33kv. But the highest useful generation voltage in India is only 11kv. After the legitimate energy is generated, this energy has to be transmitted (transmission) which requires a transmission station.


TRANSMISSION STATION

In electric transmission, electric power is supplied from power station to sub-station and various types of industrial consumers.


TRANSMISSION LINE
TRANSMISSION LINE
                                             


The transmission station is divided into two parts

1-primary transmission and
2-secondary transmission.

The primary transmission voltages are 110 kv, 132 kv, 220kv, and 400kv by electric power transmission and distance.

And the secondary transmission voltage is generally 33kv and 66 kv.

After power transmission, the number to distribute power comes. For this, power distribution sub-stations are built in which the secondary transmission voltages 33kv and 66kv are converted to useful voltage by step down.


DISTRIBUTION STATION


Distributed generation (DG) is a method of generating electricity from multiple renewable energy sources that are very near to load demands.

There are also two types of distribution systems

1-primary distribution system and
2-secondary distribution system.

Conductors used in Transmissions and distribution system full details ..

The primary distribution voltage is 6.6 kv and 3.3kv
And the secondary distribution voltage is usually 415V or 240V.

We use these secondary distribution voltages to run the electric machines or electric appliances of our homes.




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