Local Load Control
In principle, any appliance that operates to a duty cycle (such as industrial or domestic air conditioners, water heaters, heat pumps and refrigeration) could be used to provide a constant and reliable grid balancing service by timing their duty cycles in response to system load.
Because it is possible to measure grid frequency from any power outlet on the grid, it is possible to design controllers for electrical appliances that detect any frequency imbalance in real time. Dynamic-demand enabled appliances would react to this same signal. When the frequency decreases they would be more likely to switch off, reducing the load on the grid and helping to restore the balance. When the frequency increases past the standard, they would be more likely to switch on, using up the excess power. Obviously, the controller must also ensure that at no point does the appliance stray out of its acceptable operating range. As line frequency is directly related to the speed of rotation of generators on the system, millions of such devices acting together would act like a huge, fast-reacting peaking power plant.
Read more about this topic: Dynamic Demand (electric Power)
Famous quotes containing the words local, load and/or control:
“Eclecticism is the degree zero of contemporary general culture: one listens to reggae, watches a western, eats McDonald’s food for lunch and local cuisine for dinner, wears Paris perfume in Tokyo and “retro” clothes in Hong Kong; knowledge is a matter for TV games. It is easy to find a public for eclectic works.”
—Jean François Lyotard (b. 1924)
“‘Tis all men’s office to speak patience
To those that wring under the load of sorrow,
But no man’s virtue nor sufficiency
To be so moral when he shall endure
The like himself.”
—William Shakespeare (1564–1616)
“All industries are brought under the control of such people [film producers] by Capitalism. If the capitalists let themselves be seduced from their pursuit of profits to the enchantments of art, they would be bankrupt before they knew where they were. You cannot combine the pursuit of money with the pursuit of art.”
—George Bernard Shaw (1856–1950)