http://www.ck12.org Chapter 5. Energy
5.92 Electrical Grid
- Describe an electrical grid.
- Identify the roles of power plants, transmission lines, and electric substations in an electrical grid.
These electric power towers carry high-voltage electric lines. The lines transmit electricity from power plants to
homes like yours. The towers are a crucial part of the electrical grid.
What Is an Electrical Grid?
Anelectrical gridis the entire electrical system that generates, transmits, and distributes electric power throughout
a region or country. A very simple electrical grid is sketched in theFigure5.197. The grid includes a power plant,
transmission lines, and electric substations, all of which work together to provide alternating current to customers.
For an overview of electric power generation, transmission, and distribution in the U.S., go to this URL: http://w
ww.youtube.com/watch?v=2eU3BgrmzkY.
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/82390