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Topic: Electric power


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  Encyclopedia: Electric power   (Site not responding. Last check: 2007-10-22)
Electric power, like mechanical power, is represented by the letter P in electrical equations, and is measured in units called watts (symbol W), after Scottish engineer James Watt.
Electricity is transmitted from remote electricity generation power plants and sold to end consumers by retailers via electric power transmission and electricity distribution.
It is necessary to transmit the electricity at high voltage to reduce the percentage loss of power over long distances: for a given cable the loss of power is proportional to the square of the current, while for a given transported power, this current is inversely proportional to the voltage.
www.nationmaster.com /encyclopedia/Electric-power   (1755 words)

  
 Electric power transmission - Wikipedia, the free encyclopedia
Typically power transmission is between the power plant and a substation in the vicinity of a populated area.
Power is transmitted underground in densly populated areas (such as large cities) but is typically avoided due to the high capacitive and resistive losses incurred.
AC power transmission is the transmission of electric power by alternating current.
en.wikipedia.org /wiki/Electric_power_transmission   (2466 words)

  
 Learn more about Electric power transmission in the online encyclopedia.   (Site not responding. Last check: 2007-10-22)
Electricity is transmitted from remote electricity generation power plants and sold to end consumers by retailerss via electric power transmission and electricity distribution.
The rapid industrialization in the 20th century made electric power transmission lines and grids a critical part of the economic infrastructure in most industrialized nations.
Electricity is usually sent over long distance and in rural areas over power transmission lines such as those in the photo on the right.
www.onlineencyclopedia.org /e/el/electric_power_transmission.html   (627 words)

  
 Encyclopedia topic: Electric power   (Site not responding. Last check: 2007-10-22)
In 1878, Thomas Edison (United States inventor; inventions included the phonograph and incandescent electric light and the microphone and the Kinetoscope (1847-1931)) developed and sold a commercially viable replacement for gas lighting and heating using locally generated and distributed direct current (An electric current that flows in one direction steadily) electricity.
Increasing the voltage (The rate at which energy is drawn from a source that produces a flow of electricity in a circuit; expressed in volts) reduces the current (A steady flow (usually from natural causes)) and therefore reduces resistive losses in the cable.
Today, Tesla's alternating-current electric power (additional info and facts about alternating-current electric power) system is still the primary means of delivering electrical energy to consumers throughout the world.
www.absoluteastronomy.com /encyclopedia/e/el/electric_power.htm   (904 words)

  
 power, electric. The Columbia Encyclopedia, Sixth Edition. 2001-05
The amount of electrical energy used by an appliance is found by multiplying its consumed power by the length of time of operation.
Electrical energy is of little use unless it can be made available at the place where it is to be used.
Power losses incurred in transmission from heat and electromagnetic emissions are included in the total reactive power requirement as are the needs of power hungry devices, such as electric motors, electromagnetic generators, and alternators.
www.bartleby.com /65/po/power-el.html   (1570 words)

  
 Electric Power eTool: Glossary
Electric circuit: Path followed by electrons from a power source (generator or battery) through an external line (including devices that use the electricity) and returning through another line to the source.
The commutation of power (conversion from DC to AC) is controlled by the power line, so that, if there is a failure in the power grid, the Photovoltaic system cannot feed power into the line.
Photovoltaic (Photovoltaic) conversion efficiency: The ratio of the electric power produced by a photovoltaic device to the power of the sunlight incident on the device.
www.osha.gov /SLTC/etools/electric_power/glossary.html   (11601 words)

  
 Electric Power   (Site not responding. Last check: 2007-10-22)
The electric power in watts associated with a complete electric circuit or a circuit component represents the rate at which energy is converted from the electrical energy of the moving charges to some other form, e.g., heat, mechanical energy, or energy stored in electric fields or magnetic fields.
The resistor is a special case, and the AC power expression for the general case includes another term called the power factor which accounts for phase differences between the voltage and current.
The fact that the power dissipated in a given resistance depends upon the square of the current dictates that for high power applications you should minimize the current.
hyperphysics.phy-astr.gsu.edu /hbase/electric/elepow.html   (211 words)

  
 Electric Power Industry Restructuring and Deregulation   (Site not responding. Last check: 2007-10-22)
Electricity Restructuring Fact Sheets This series of fact sheets, each devoted to one of the current hot topics concerning electricity deregulation, is designed to answer today's most frequently asked questions about the industry.
The Restructuring of the Electric Power Industry -- A Capsule of Issues and Events This booklet is an update to the original which was published in 1997.
Electricity Reform Abroad and U.S. Investment Looks at how Argentina, Australia, and the United Kingdom each addressed their country's electricity sector reform.
www.eia.doe.gov /cneaf/electricity/page/restructure.html   (284 words)

  
 Electric Power Steering
Honda went with an electric power steering system mainly because (1) It's compact and light and (2) it's not parasitic (robbing power from the engine) since it only draws electric power on demand.
Honda reduced the size of their original power steering unit in '95 to make it about 4 pounds lighter than the original ones in the '91-'94 automatics.
If the steering wheel is turned and held in the full-lock position and steering assist reaches a maximum, the control unit reduces current to the electric motor to prevent an overload situation that might damage the motor.
www.nsxprime.com /FAQ/Technical/eps.htm   (627 words)

  
 The R/C Aircraft Proving Grounds - Electrics Home Page
Electric power can be used for any kind of flying glider, aerobatics, even racing.
Electric power systems are heavier for a given power output.
In the ideal world, motors would be specified by the total power they are capable of supporting and by the number of cells (or voltage) with which that power is produced.
www.geistware.com /rcmodeling/electricpower   (1344 words)

  
 Electric Power - Succeed in Physical Science
The electrical power used in operate an electrical device is defined as the potential energy or voltage times the current passing through the device.
The electrical power required to operate a device is the input voltage times the current required.
Your electric bill is based on the electric power times the time used, in kilowatt-hours.
www.school-for-champions.com /science/electpower.htm   (893 words)

  
 Electric Power Monthly
At nuclear power plants, however, generation decreased 2.3 percent, from 598.4 to 584.6 billion kilowatthours, due to a higher rate of maintenance and refueling downtime in 2005 than in 2004.
Year-to-date, consumption of coal for electric power generation increased by 2.8 percent, natural gas consumption was up 8.2 percent, and consumption of petroleum coke increased 7.5 percent.
Sectoral Distribution of Generation and Consumption of Fuels: During September 2005, 62.3 percent of electric power generation was produced at utility power plants, 34.1 percent by independent power producers (IPPs), and the remainder at industrial and commercial combined heat and power plants.
www.eia.doe.gov /cneaf/electricity/epm/epm_sum.html   (2339 words)

  
 World Electric Power Guide
It includes a table describing electrical systems worldwide, illustrations of electrical plugs you may run across, advice on using your computer and other general advice that you may find helpful.
If you are going to use electrical appliances in another country, you need to know what type of electrical voltage is used in the country you're traveling to and the type(s) of plugs and outlets used there.
Also, since the quality of electrical power might be an issue, a Universal Surge Suppressor might be a goody buy, especially one that includes plug adaptors that will work in most of the world.
kropla.com /electric.htm   (1168 words)

  
 Electricity Around the World
Most electrical power systems are prone to slight variations in voltage due to demand or other factors.
The electric power frequency is shown in the number of hertz (cycles per second).
110V power with plugs A and B was previously used but is being phased out.
kropla.com /electric2.htm   (1424 words)

  
 Franklin Electric - EMPD - World Electric Power Guide   (Site not responding. Last check: 2007-10-22)
If you are going to use electrical appliances abroad, you need to know what type of electrical voltage is used in the country where you're traveling and what type of adapter or plug is needed to plug your appliances into the outlet.
If you must take some electrical appliances with you abroad, your best bet is to buy travel-size dual-voltage appliances that can run on both 110 and 220 currents.
If you need more information about electricity in the country you are visiting, you can try asking Magellan's or you can order a comprehensive guide to electric current abroad from the U.S. Department of Commerce National Technical Information Service (NTIS) by calling 703-605-6050 or 800-553-6847.
www.fele.com /empd/tech/fe-power.html   (968 words)

  
 Power Window Kits, regulators & motors for power windows, door locks, keyless entry & pop doors
If you are looking for the best power window kit to install in your vehicle, you've come to the right place.
A1 Electric is your best choice for power windows, power door locks, pop door kits, alarms and keyless entry systems.
We have been selling Electric Life power windows for over 15 years and have the products and expertise you need to install power auto accessories in your car or truck.
www.a1electric.com   (383 words)

  
 NS Electric Power Companies
Electric utility companies were required to report annually to the PUB, certain basic statistics such as operating revenue, operating expenses, taxes, debt, and the like.
This transmission line bringing electric power from The Falls was the sole source of supply for the Cobequid Power Co. until 1 October 1933, when Cobequid ceased to draw its power from The Falls, and began purchasing it from the Truro Electric Commission.
The Pereaux Electric Light &; Power Company was incorporated in 1934.  On 19 November 1934, the Pereaux EL&P Co. was authorized to issue 30 common shares at a par value of $100.00 each, to raise $3,000 to pay for construction of a transmission line and electrical distribution system.
alts.net /ns1625/electric.html   (11758 words)

  
 Electric power - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-10-22)
Power Generation Handbook : Selection, Applications, Operation, Maintenance
The Solar Electric House: Energy for the Environmentally-Responsive, Energy-Independent Home
Electric Power Distribution Handbook (Electric Power Engineering Series)
encyclopedia.worldsearch.com /electric_power.htm   (731 words)

  
 ABC News: American Electric Power 2Q Earnings Soar   (Site not responding. Last check: 2007-10-22)
The American Electric Power corporate headquarters building is seen April 29, 2004 in Columbus, Ohio.
American Electric Power Co., the nation's largest power generator, said Friday that its second-quarter profit more than doubled from increased retail sales, higher margins in off-system sales and lower operation and maintenance costs.
COLUMBUS, Ohio Jul 29, 2005 — American Electric Power Co., the nation's largest power generator, said Friday its second-quarter profit more than doubled, helped by increased sales to residential and commercial customers, higher wholesale sales of power to other utilities and lower operation and maintenance costs.
abcnews.go.com /Business/wireStory?id=990963   (360 words)

  
 Electric Power Generation Association   (Site not responding. Last check: 2007-10-22)
Electric Power Generation Association • 800 N. 3rd Street • Harrisburg, PA 17102 • 717-909-EPGA ph • 717-909-1941 fax •
The EPGA is a regional trade association of major electric generating companies that supply wholesale power in Pennsylvania and surrounding states.
The Electric Power Generation Association (EPGA) sponsors the Pennsylvania Energy News which brings you the latest information concerning the rapidly changing energy industry in Pennsylvania, and the rest of the nation.
www.epga.org   (152 words)

  
 > energy.gov : Electric Power
Research is also underway to increase the fuel efficiency of coal-fueled power plants.   Today’s plants convert only a third of coal’s energy potential to electricity.   New technologies in DOE’s Fossil Energy program could nearly double efficiency levels in the next 10-15 years.   Higher efficiencies mean even more affordable electricity and fewer greenhouse gases.
The 103 U.S. nuclear units supply about 20 percent of the electricity produced in the United States – second only to coal as a fuel source.   The Nuclear Energy program is working to develop cost-efficient technologies that further enhance nuclear safety, minimize the generation of nuclear waste, and further reduce the risk of proliferation.
But "superconducting" materials have no resistance, and if they are used to transmit electricity in the future, very little of the electricity will be lost.
www.energy.gov /engine/content.do?BT_CODE=ELECTRICPOWER   (295 words)

  
 LOCAL COMMENT: ELECTRIC POWER: Don't unplug fairness   (Site not responding. Last check: 2007-10-22)
Michigan's electric utilities want to change all that and transfer the risk of building new power plants to you, the ratepayer.
In other words, the utilities want to be assured that they will recover, in the rates you are charged for electricity, the costs of a plant that may appear to be needed today but may not be needed when it's completed.
Finally, the utilities are proposing to assess customers who have chosen an alternative provider for their electricity a charge for not only new plants but existing generation as well, allowing utilities to drive competitors out of business.
www.freep.com /apps/pbcs.dll/article?AID=/20060104/OPINION01/601040336/1068/OPINION   (780 words)

  
 SRP: Delivering More Than Power   (Site not responding. Last check: 2007-10-22)
Electricity prices are lower during certain hours on this plan.
Simplify electric bill payment with three convenient services in one.
Residential electric customers can get electronic bill notification, paperless billing and more.
www.srpnet.com   (150 words)

  
 S&C Electric Company - Electric Power Switching and Protection, Power Quality Specialists
Power from the Sun: Circuit-Switchers with Solar-Powered Operators.
As semiconductor devices become increasingly small and the manufacturing process increasingly precise, the need for reliable, dependable electric power has never been greater.
Not only do power disturbances stop production, they halt the manufacturing process during cleanup, quality assurance checks, and revalidation and regulatory agency reporting.
www.sandc.com   (282 words)

  
 Florida Municipal Electric Association - Public power electric utility industry news and information.   (Site not responding. Last check: 2007-10-22)
The association is at the forefront of energy industry trends, and advances public power utilities toward enhancing services and continually innovating in all aspects of utility operations.
The Florida Municipal Electric Association is affiliated with and works closely with the American Public Power Association on federal issues.
The Energy Brief is a historical electric industry news archive with easy-to-read summaries of the dozens of issues related to electric deregulation and competition.
www.publicpower.com   (612 words)

  
 NECA News - Home
Founded in 1985, NECA's mission is to facilitate an open forum among all electric power stakeholders to foster the development and maturation of competitive power markets.
NECA's 300 members include developers and owner/operators of competitive power projects, both regulated and merchant transmission and distribution companies, power marketers and traders, fuel and equipment suppliers, power consumers and various service providers to the power industry, including law firms, investment bankers, environmental engineering and economic consulting firms.
Through its State and Regional Partner membership in the Electric Power Supply Association (EPSA), the competitive power industry's premier national trade association, NECA also participates in the development of policies at the FERC and in Congress.
www.necanews.org   (342 words)

  
 EIA - Electricity Data, Electric Power Capacity and Fuel Use, Electric Surveys and Analysis
EIA - Electricity Data, Electric Power Capacity and Fuel Use, Electric Surveys and Analysis
Electric Power Flash data estimate for next month
Electric Power Annual 2004 - State Data Tables
www.eia.doe.gov /fuelelectric.html   (38 words)

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