How Is Electricity Made



Click Here for E-Book Details



Click Here for E-Book Details

How Is Electricity Made? A generator manufactures electricity. In a generator, something causes the shaft and armature to spin. An electric current is generated, as shown in the picture (lighting bolt).

Lots of things can be used to make a shaft spin - a pinwheel, a crank, a bicycle, a water wheel, a diesel engine, or even a jet engine. They're different sizes but it's the same general idea. It doesn't matter what's used to spin the shaft - How is Electricity Made, is all the same.

Electric generators are essentially very large quantities of copper wire spinning around inside very large magnets, at very high speeds.

A commercial utility electric generator -- for example, a 180-megawatt generator at the Hawaiian Electric Company's Kahe power plant on Oahu -- can be quite large. It is 20 feet in diameter, 50 feet long, and weighs over 50 tons. The copper coils (called the "armature") spin at 3600 revolutions per minute. Although the principle is simple (copper wire and magnets), it's not necessarily easy!

Steam turbine generators, gas turbine generators, diesel engine generators, alternate energy systems (except photovoltaics), even nuclear power plants all operate on the same principle - magnets plus copper wire plus motion equals electric current. The electricity produced is the same, regardless of source.

 

When it comes to How Is Electricity made, power stations need large amounts of energy to turn the turbines. Most use heat energy produced from burning coal. Others use wind energy or moving water. The spinning turbine causes large magnets to turn within wire coils - these are the generators. The moving magnets within the coil of wire causes the electrons (charged particles) to move within the coil of wire. This is electricity.

Steam turbine generators, gas turbine generators, diesel engine generators, alternate energy systems (except photovoltaics), even nuclear power plants all operate on the same principle - magnets plus copper wire plus motion equals electric current. The electricity produced is the same, regardless of source.

How Is Electricity made? It is not important to consumers, who expect their electricity to be available whenever they plug in an appliance, turn a switch, or open a refrigerator. Satisfying these instantaneous demands requires an uninterrupted flow of electricity. In order to meet this requirement, utilities and nonutility electricity power producers operate several types of electric generating units, powered by a wide range of fuel sources. These include fossil fuels (coal, natural gas, and petroleum), uranium, and renewable fuels (water, geothermal, wind, and other renewable energy sources).

How Is Electricity Made

 


So, when it comes to How Is Electricity Made, where do all the different fuels come in when it comes to How Electricity Is Made? It's all a question of how to get (and keep) the system moving (i.e. how to keep the copper wire spinning around).

In a steam power plant, fuels (such as petroleum, coal, or biomass) are burned to heat water which turns into steam, which goes through a turbine, which spins...turning the copper wire (armature) inside the generator and generating an electric current.


How Is Electricity Made

Subscription

 
Training Courses

Electrical Testing and Troubleshooting Electrical Systems

  • January 22-23, 2015 - Mississauga, ON
  • January 26-27, 2015 - Edmonton, AB
  • January 28-29, 2015 - Richmond, BC

VFDs and Electric Motor Control Training

  • February 3-4, 2015 - Richmond, BC
  • February 5-6, 2015 - Edmonton, AB
  • February 9-10, 2015 - Winnipeg, MB
  • February 11-12, 2015 - Saskatoon, SK
  • February 17-18, 2015 - Mississauga, ON

HV Substation Maintenance Practices

  • February 4-5, 2015 - Mississauga, ON
  • February 11-12, 2015 - Edmonton, AB

2015 Electrical Code Update Training

  • February 12-13, 2015 - Richmond, BC
  • February 17-18, 2015 - Calgary, AB
  • February 19-20, 2015 - Edmonton, AB
  • March 2-3, 2015 - St. Johns, NL
  • March 5-6, 2015 - Moncton, NB
  • March 10-11, 2015 - Ottawa, ON
  • March 12-13, 2015 - Mississauga, ON
  • April 20-21, 2015 - Winnipeg, MB
  • April 22-23, 2015 - Saskatoon, SK

1-Day Arc Flash/Electrical Safety Workshop

  • February 19, 2015 - Winnipeg, MB
  • February 20, 2015 - Saskatoon, SK
  • February 23, 2015 - Richmond, BC
  • February 24, 2015 - Edmonton, AB
  • February 26, 2015 - Mississauga, ON

2-Day LV-MV-HV Electrical Safety Training

  • February 24-25, 2015 - Edmonton, AB
  • February 26-27, 2015 - Mississauga, ON

1-Day HV Electrical Safety Workshop

  • February 25, 2015 - Edmonton, AB
  • February 27, 2015 - Mississauga, ON

Electrical Relay Protection Training

  • March 24-25, 2015 - Mississauga, ON
  • March 26-27, 2015 - Winnipeg, MB
  • April 7-8, 2015 - Richmond, BC
  • April 9-10, 2015 - Edmonton, AB

2-Day Arc Flash/Electrical Safety Workshop

  • May 4-5, 2015 - Richmond, BC
  • May 6-7, 2015 - Edmonton, AB
  • May 11-12, 2015 - Mississauga, ON
  • May 13-14, 2015 - St. Johns, NL

Generators and Standby Emergency Power

  • May 11-12, 2015 - Richmond, BC
  • May 13-14, 2015 - Edmonton, AB
  • May 20-21, 2015 - Mississauga, ON
 
Affiliates
 
Featured Product

S&C IntelliRupter® PulseCloser

S&C Electric Company
S&C's IntelliRupter PulseCloser is a breakthrough in distribution system protection.
more...
 
Advertisement
 
Latest Buyer's Guide Companies
Sign Up Today and Receive Our FREE E- Newsletter

E-newsletter service - Exciting industry trends, technical developments, product information, forums and electrical training courses.