By 2050, North America will need somewhere between 15 and 20 Terawatt hours/year of electric power (DOE/EIA estimate1). The storage, transmission, and distribution technologies of the smart grid of the future—a web-enabled, digitally controlled, intelligent delivery system—must be able to deliver that amount of power to all corners of the continent efficiently. Millions of generation and storage points, both remote and locally distributed, from many different energy sources will be needed to supply that amount of electricity. A continental-scale grid will be needed to interconnect remote gas, coal and nuclear generation with wind, solar, geothermal and other renewables, in both centralized (deserts, offshore) and distributed (house, block, community, business, town) facilities.
Why? At present, the grid is not even equipped to deal with the large increases in congestion and electricity traffic being stimulated by the long-distance demands of the power trading and deregulation of U.S. electricity markets. Slow response times of mechanical switches, lack of automated analysis of problems, inability to “see the whole grid,” are contributing to a noticeable increase in failures of the grid.
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发表于 2009-12-29 17:54:24
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