Generating Electrical Energy Generating Electricity Diagram - Electric Power Generation and Use:

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Presentation transcript:

Generating Electrical Energy

Generating Electricity Diagram - Electric Power Generation and Use:

Generating Electricity Diagram - Electric Power Plant:

Generating Electricity Description of Components:  Fuel/source – Electrons in wires will not move in an organized way without a source of power. (ex. battery, electrical power plant) Electrical power plants differ in how they are powered: burning coal, oil, or natural gas Biofuels (ethanol, biodiesel) nuclear fuel (uranium) solar wind hydroelectric (the pressure of water behind a dam) geothermal (heat from the earth)

Generating Electricity  Turbine – Consists of thousands of moving blades Transfers the energy in moving steam or water into the rotational (mechanical) energy of a shaft in a generator Ultimately forces wire coils to rotate within a magnetic field in the generator

Generating Electricity  Generator – Mechanical energy is converted to electrical energy Thousands of coils of wire spin between the poles of a strong magnet Electricity is generated at at approx. 20,000 volts  Transformer – A device that is used to step-up (increase) or step- down (decrease) voltage Voltage is stepped up before traveling large distances and stepped down before distribution to homes and businesses.

Generating Electricity  Transmission Lines – Carry electric power many miles at high voltages (approx. 760,000 volts) to the appropriate destination  Distribution and Use – Electricity is “stepped-down” or decreased in a distribution transformer to approx. 12,000 volts Voltage is then decreased further; volt lines extend to homes and buildings where it is used Electricity is unique because it cannot be stored. It must be produced on demand and used immediately!