What are the main elements of the Power System?

• A. Generation, Transmission, Substation, Distribution
• B. Generation, Mechanical, Substation, Distribution
• C. Generation, Transmission, Distribution, Transmission
• D. Generation, Transmission, Regulation, Distribution

Answer: (A)

The main elements of a Power System are generation, transmission, substations, and distribution. Generation is where electrical energy is produced, using power plants or renewable sources. Transmission moves that high-voltage electricity over long distances to minimize losses. Substations act as the bridge between transmission and distribution, stepping voltage down to usable levels and providing switching, protection, and routing to different feeders. Distribution then delivers the electricity at lower voltages to homes and businesses.

This combination—generation, transmission, substation, and distribution—captures the full path from producing power to delivering it to end users. The other options introduce elements that aren’t primary parts of the system layout (like mechanical or regulation) or repeat an stage (transmission), which doesn’t reflect the standard flow.