Is hydropower generated by running water

How is electricity generated from hydropower

How is electricity generated from hydropower?

Through evaporation of water and the formation of clouds, solar radiation (solar energy) gives the water a potential energy (energy of the location). The rain clouds are transported and rain down through interactions with the wind.

By raining and collecting the water in the ground, a major part of it is stored and slowly dissipated in the form of kinetic energy (energy of movement) via the rivers. By using this energy in storage power plants or river power plants, mechanical energy is made available with the help of water turbines to drive the generators.

The function of a water turbine
The function of a water wheel is well known. Water itself is a potential energy and flowing water can use its kinetic energy to drive a water wheel. The change in speed of the water when it hits the blades creates a force (impulse) that sets the wheel in motion. The potential energy is converted into kinetic energy.

The same principle applies to a turbine. The kinetic energy of the water is converted into mechanical energy by utilizing a height difference and by the impulse forces of the flowing water. This energy in turn drives the generators.

The function of the generator
By moving or rotating a conductor in the generator's magnetic field, a force is exerted on the free electrons. This creates an electrical voltage that moves the electrons in the direction of the conductor, that is, an electrical current flows. Electrical energy is provided by the flow of the electrical current.

Units:
Electrical output: watts (W), kilowatts (KW), megawatts (MW)
Electrical voltage: volts (V)
Electrical energy: watt-second (Ws), kilowatt-hour (Kwh)
Electric current: Ampère (A)

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