What are the two main types of substations?

The two main types of substations are transmission and distribution. Transmission substations are responsible for stepping up the voltage of electricity generated at power plants for long-distance transportation across high-voltage transmission lines. These substations typically include transformers, circuit breakers, and other equipment designed to handle high voltage safely and effectively.

On the other hand, distribution substations serve the purpose of stepping down the voltage for local distribution to residential and commercial customers. These substations take the high-voltage power from the transmission system and reduce it to a lower voltage suitable for use in homes and businesses.

This classification based on the functions and voltage levels helps in the efficient management and operation of the electrical grid, ensuring that electricity is transmitted over long distances at high voltages and then distributed effectively at lower voltages where it is consumed. Other options provided may refer to different aspects or classifications of substations but do not encapsulate the primary distinctions based on their operational roles in the power supply system.