Question
How do power grids work?
Key Words
power grids, generators, high-voltage transmission lines, sub-stations, transformers,
interconnected electricity network, freeway for electrons, highways, railroad easements, electrical power,
interconnected grids, benefits to neighboring countries, blackout
Answer
Power grids are the overhead, high-voltage transmission
lines that criss-cross our nations. This interconnected
network enables multiple generators to feed this
grid simultaneously, allowing utilites to buy and
sell power at least cost.
Often running alongside highways and railroad easements,
these grids act as the freeway for electrons for
delivery of electrical power from generation sources
through high-voltage transmission lines, sub-stations,
and transformers to customers in cities and industry.
Interconnected grids enable power to be transferred
from one region to another — leveling loads
between time zones and the seasonal variations between
north and south. Today, 100 nations are interconnected
across borders, taking advantage of these benefits
that accrue to the trading nations.
Related Issues
Link August,
2003 Blackout of northeast United States and Canada (145kb swf)
Related Links
Related Issue Link
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Updated: 2016/06/30
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