A transmission and distribution system moves power from a utility's power production and purchase points to it's customers. Retail sale of electric energy involves the delivery of power in ready to use form to the final consumers. This electric power must flow through a power delivery system beginning at it's production until it reached the end-users. The delivery system is called the transmission and distribution system and it consists of lines, substations, transformers, and other equipment scattered over a wide geographic strategically located. The transmission and distribution's function is to mainly deliver power as needed to the utility's customers.
Normally, power generation is concentrated at few large, and usually isolated, power stations. The transmission and distribution moves this power to the customers. But in some cases, power stations are small, but numerous, and strategically located throughout the power system in proximity of the customers.
However, even which scenario of power delivery is available, Transmission and Distribution requires investment in billions of dollars. It will be the main objective of the Power Distribution Planner to make the power system deliver readily and widely available, economical, and reliable energy to the customers.
We will discuss the concepts and principles, objectives, and missions of Transmission and Distribution on later posts.
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