CE Pro July 2024 - 46

TECHNOLOGY | Energy Management
Energy
Management
Market Matures
& Entices
Changing technologies and more manufacturers in
the 'Wild West' of electrical power management are
enabling integrators to design a range of systems -
now it's up to the channel to embrace the opportunity.
By Orrin Charm
THE STATUS of electrical
power keeps
changing, as new means of
generation, new users, and
new methods of storage
change the game for both
electrical utilities and their
customers.
First, some background.
Most electrical power is
generated through electromagnetism:
a generator
rotates in a magnetic field,
converting the rotational
power into electrical power
that is fed to a distribution
grid.
The source of the
rotational power is what
distinguishes the energy
sources. Most generators
are powered by steam,
which drives the rotor
blades. That steam can be
46 | CE Pro July 2024
produced by burning coal,
oil, or gas, nuclear fission,
or from solar energy. Other
generators are powered
directly by water, using
hydroelectric turbines, or
by wind.
Finally, there are photovoltaic
generators, which
produce power directly
from sunlight.
Electromagnetic generators
share some specific
properties: they have a very
large rotational mass to
provide stability, they are
capable of constant 24/7
operation, they are difficult
to shut down and start up,
and they generate a constant
amount of power as
long as they are spinning.
Photovoltaic power, by
contrast, only generates
power during daylight
hours, and the power output
varies with the amount
of available sunlight.
One thing they all have
in common is that they are
extremely expensive to
build, update, and maintain.
For the electrical utilities,
the highest expense is the
creation of additional power
capacity, and the difficulty
of obtaining locations,
acquiring permits, and
dealing with the political
opposition that invariably
accompanies any attempt
to build additional power
plants.
Since the power generation
from most sources is
constant, it is most efficient
if the utilities can provide a
constant supply of electricity
to the grid and their
customers. There is still no
efficient way to store large
amounts of electricity and
deliver it at another time,
or to efficiently transport it
over long distances.
Customers, however,
have their own schedules,
and those don't necessarily
provide a constant
demand. Most people
wake up and go to work in
the morning, shifting their
power consumption from
their homes to their workplaces.
Then they all go
home in the evening, adjust
their home temperature
for comfort, turn on lights
and appliances, and then
go to sleep. Power demand
is greater during the day,
peaks between 4 and 9
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CE Pro July 2024

Table of Contents for the Digital Edition of CE Pro July 2024

CE Pro July 2024 - Intro
CE Pro July 2024 - Cover1
CE Pro July 2024 - Cover2
CE Pro July 2024 - 1
CE Pro July 2024 - 2
CE Pro July 2024 - 3
CE Pro July 2024 - 4
CE Pro July 2024 - 5
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CE Pro July 2024 - Cover3
CE Pro July 2024 - Cover4
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