4.ELECTRICAL ENERGY:


Is a form of energy that is transported by an electrical current.
Electricity is very common for two reasons:

• It can be easily transformed into other types of energy,such as ligth and heat.
• It can be transported over long distances in ways that are cheap and efficient.

4.1.ELECTRIC POWER STATIONS:
Is a place where energy from natural resources is transformed into energy that we can consume.If the energy obtained is electricity,it is called an electric power stations.

  HOW ELETRICITY IS GENERATED:

• They use generators to transform this energy into electricity.
• The electric generators used in power stations are called alternators.
• An alternator usually has a stationary part,called a startor,and a moving part,called a rotor.

The turbine-alternator system is used at all power stations except for photovoltaic station,which use a different type of technology.


4.2.THE TRANSPORTATION AND DISTRIBUTION OF ELECTRICITY:
The transportation of electrical energy includes:

• RAISING VOLTAGE: Electricy must be transported over long distances,so the voltaje is raised to avoid the loss of energy as heat.
• HIGH VOLTAGE LINES: Routes for high voltaje lines are carefully planned and the lines are installed on towers.
• DISTRIBUTIONS: The power distributed to homes,offices,industries and public installations,such as streetlights and traffic lights.