smart grid - A smart grid delivers electricity from...

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A smart grid delivers electricity from suppliers to consumers using digital technology to save energy, reduce cost and increase reliability and transparency. Such a modernized electricity network is being promoted by many governments as a way of addressing energy independence , global warming and emergency resilience issues. As with any heavily promoted initiative, many similar proposals have many similar names, including at least smart electric grid , smart power grid, intelligent grid (or intelligrid ), FutureGrid , and the more modern intergrid and intragrid . [ edit ] Deployments and deployment attempts One of the first attempted deployments of "smart grid" technologies in the United States caused a firestorm of criticism and was recently rejected by electricity regulators in the Commonwealth of Massachusetts , a US state . [1] According to an article in the Boston Globe , Northeast Utilities' Western Massachusetts Electric Co. subsidiary actually attempted to create a "smart grid" program using public subsidies that would switch low income customers from post-pay to pre- pay billing (using " smart cards ") in addition to special hiked "premium" rates for electricity used above a predetermined amount. [1] This plan was rejected by regulators as it "eroded important protections for low-income customers against shutoffs". [1] According to the Boston Globe , the plan " unfairly targeted low-income customers and circumvented Massachusetts laws meant to help struggling consumers keep the lights on". [1] A spokesman for an environmental group supportive of smart grid plans and Western Massachusetts' Electric's aforementioned "smart grid" plan, in particular, stated "If used properly, smart grid technology has a lot of potential for reducing peak demand, which would allow us to shut down some of the oldest, dirtiest power plants. .. It’s a tool." [1] [ edit ] Goals In principle, the smart grid is a simple upgrade of 20th century power grids which generally "broadcast" power from a few central power generators to a large number of users, to instead be capable of routing power in more optimal ways to respond to a very wide range of conditions. [ edit ] Respond to many conditions in supply and demand The conditions to which a smart grid, broadly stated, could respond, occur anywhere in the power generation, distribution and demand chain. Events may occur generally in the environment (clouds blocking the sun and reducing the amount of solar power, a very hot day), commercially in the power supply market (prices to meet a high peak demand exceeding one dollar per kilowatt-hour), locally on the distribution grid (MV transformer failure requiring a temporary shutdown of one distribution line) or in the home (someone leaving for work, putting various devices into hibernation, data ceasing to flow to an IPTV), which motivate a change to power flow. Latency
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This note was uploaded on 03/21/2010 for the course KNOWLEDGE 5654 taught by Professor Mr.david during the Spring '10 term at IESE Business School.

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smart grid - A smart grid delivers electricity from...

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