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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  44
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. "
Which of the following is a must for smart-grid technology to work?
选项 A、The front yard of a house with a tall wooden pole.
B、A huge hook that can connect power lines together.
C、High-speed Internet access and Internet services.
D、Many monitors through which power flowing can be seen.
答案C
解析 事实细节题。由题干中的smart-grid technology定位到第二段可知，智能电网实验房的房子前院里竖着一根电线杆，上面带有特殊变压器，将电线和高速互联网联接在一起。电线上有成百上千个传感器，监控着房子里的电流使用情况。所有信息都被送回总公司。所以[C]“高速互联网接人和服务”是必要条件，故为正确答案。本实验用房有前院，但前院和高高的木杆与智能电网技术无关，故排除[A]；特殊的传感器把电线和网络连接在一起，然后由杆子作支撑，并不是说要用钩子把所有电线钩在一起，故排除[B]；整个过程需要通过传感器将电流情况送回到公司，并没有说会有很多显示器显示电流的流动情况，故排除[D]。
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