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  3. "Cleverness" Charged Barbed Wire Net Current Group, a Germantown-based technology firm, has taken over an ordinary looking h

"Cleverness" Charged Barbed Wire Net Current Group, a Germantown-based technology firm, has taken over an ordinary looking h

admin2013-04-03  79
问题                     "Cleverness" Charged Barbed Wire Net
    Current Group, a Germantown-based technology firm, has taken over an ordinary looking house in Bethesda and turned it into a laboratory tor smart-grid technology, the system the company believes will bring the nation’s electricity grids into the digital age.
    In the front yard stands a utility pole hooked up to a special transformer that connects the power lines to high-speed Internet. Hundreds of sensors attached to the lines monitor how power flows through the home That information is then sent back to the utility company.
    The process lets a utility more efficiently manage the distribution of electricity by allowing two-way communication between consumers and energy suppliers via the broadband network on the power lines. Based on data they receive from hundreds of homes, utilities can monitor usage and adjust output and pricing mresponse to demand. Consumers can be rewarded with reduced rates by cutting back on consumption during peak periods. And computerized substations can talk to each other so overloaded circuits hand off electricity to those that axe not fully loaded, helping to prevent blackouts.
    Some utility companies have launched initiatives to give consumers data about their energy consumption habits in an effort to lower energy bills. Smart-grid technology takes such programs further by automating electricity distribution, which would make grids more reliable and efficient.
    By partnering with utilities, the company hopes to tap into $4. 5 billion in stimulus grants intended to encourage smart-grid development. When he announced the funding, President Obama pointed to a project in Boulder, Colo. , as an example of a successful smart-grid experiment. Current is one of the companies working on the project.
    Current’s chief executive Tom Casey believes the technology will help utility companies better distribute electricity produced by renewable resources, such as solar panels or wind farms. "A smart grid’s system can be paired up with the renewable resources so that when the renewable source is varying, the overall load can be varied as well," Casey told the House Select Committee on Energy Independence and Global Warming. "This will re-dace or eliminate the need for backup coal or gas-based power generation plants. "
What benefit can the smart-grid technology bring?
选项 A、The electricity supply of a certain area can be adjusted accordingly.
B、The consumers and energy suppliers can have direct communication.
C、Consumers can be rewarded for using less electricity.
D、Substations can talk to each other through computers.
答案A
解析 事实细节题。由题干中的benefit，smart-grid technology定位到第三段。第一句说，电力部门可以更好地控制电流的分布。也就是说“可以相应地调整某个区域的电流供应情况"，故[A]为正确答案。第一句中还说．消费者和电力供应商可以通过连接在电线的高速互联网进行双向交流，但并不是意味着[B]“消费者可以和电力供应商进行直接交流”，本选项断章取义，故排除；第三句说，消费者如果在用电高峰期减少用电量可以获得奖励。其中，“用电高峰期”也是条件之一，所以[C]片面，故排除；第四句说，计算机化的各变电站之间也可以进行交流，将电流从负载过重的电路上调整到非满负荷运转的电路上，从而避免了停电，并不是[D]“变电站可以通过计算机进行交谈”，故排除。
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