Transformers play a crucial role in power plants by ensuring efficient electricity generation, transmission, and distribution. Here’s how they are used:

1. Step-Up Transformers (Generator Transformers)

Located at the power plant’s output.

Increase (step up) the generated voltage (e.g., from 11kV or 33kV to 132kV, 220kV, or higher).

Higher voltage reduces transmission losses over long distances.

2. Station Service Transformers

Provide power to internal plant equipment (e.g., control systems, motors, lighting).

Convert generated voltage to lower levels (e.g., 6.6kV, 415V) for plant operations.

3. Step-Down Transformers (Substation Transformers)

Used at receiving substations near cities or industries.

Reduce (step down) the voltage to safer levels (e.g., 33kV, 11kV, 415V) for distribution.

4. Auxiliary Transformers

Supply power to critical subsystems like cooling pumps, lubrication systems, and excitation systems.

Ensure smooth operation of generators and turbines.

5. Current & Potential Transformers

Used for measurement and protection purposes.

Provide accurate current and voltage readings for monitoring and relay operations.

Transformers help optimize efficiency, minimize energy losses, and ensure safe electricity distribution from the power plant to end-users.