6.3 Transmission and Distribution of Electricity

The components involved in the electrical power transmission and distribution system are:

1. Power station

2. Step-up transformer station

3. National Grid Network

4. Step-down transformer

5. Substation 

1. Generators at power stations produce alternating current with a voltage of 11 kV or 25 kV. 

2. Alternating current from the power stations is then transmitted to a step-up transformer station (Bn). Here, the voltage of the alternating current is increased to 132 kV, 275 kV or 500 kV using a step-up transformer. 

3.