Which component connects generators to the DWP Transmission System and typically steps up voltage from 18 kV to transmission levels of 138 kV or 230 kV?

Which component connects generators to the DWP Transmission System and typically steps up voltage from 18 kV to transmission levels of 138 kV or 230 kV?

• A. Banks
• B. Switchyard
• C. Circuit breakers
• D. Transformers

Answer: (A)

The key idea is how generation is linked to the high-voltage transmission system: the voltage must be stepped up from a generator’s output to a level suitable for long-distance transmission. This stepping up is done by transformers, and in power plants that power level is usually achieved with a bank of transformers rather than a single unit. A transformer bank connects the generator’s output, often around 18 kV, to the transmission system at higher voltages such as 138 kV or 230 kV. Using a bank provides the needed capacity and reliability, and it’s arranged in the plant’s switchyard to feed the transmission grid smoothly. Switchyards host the equipment and connections, but the actual voltage increase comes from the transformer bank, while circuit breakers protect those transformers and lines. Therefore, the component described is the transformer bank.

The key idea is how generation is linked to the high-voltage transmission system: the voltage must be stepped up from a generator’s output to a level suitable for long-distance transmission. This stepping up is done by transformers, and in power plants that power level is usually achieved with a bank of transformers rather than a single unit. A transformer bank connects the generator’s output, often around 18 kV, to the transmission system at higher voltages such as 138 kV or 230 kV. Using a bank provides the needed capacity and reliability, and it’s arranged in the plant’s switchyard to feed the transmission grid smoothly. Switchyards host the equipment and connections, but the actual voltage increase comes from the transformer bank, while circuit breakers protect those transformers and lines.

Therefore, the component described is the transformer bank.