How Hydroelectricity works?


{Intro Music} Green or Renewable energy is generated from Natural sources Such as wind, water, sunlight, rain and geothermal heat. One of them is hydroelectricity which uses water as a source and is generated in Hydro-power plants today Hydroelectricity produces approximately 24 percent of the world's electrical energy. In this video we will learn how hydro electricity is produced. The six main component of hydropower plants are dams, gates, penstock, turbine, AC generator and transformer dams are built to hold back water which means a large water reservoir. As the gates are opened, a small opening up a large reservoir, builds very high water pressure as it flows through the penstock. Penstock is a pipeline that leads to the turbine. It is designed in such a way that the gravitational force pulls the water down to the turbine which produces kinetic energy. Turbines consist of a large fan blades and the spindle. The spindle rotates when the water strikes the blades thus converting Kinetic energy to Mechanical energy. On the top there's an exciter which gets small DC power. Below the exciter is the generator the working up in AC generator depends on Electromagnetic Induction.

Inside the generator is a rotor, which is driven by the spindle outside rotor, the stationary part is a stator, which is made up of three Coils of copper wires called winding. on a rotor there are a number of electromagnets powered by the DC current through exciter. The magnets are lined up in a way that adjacent poles have opposite field to each other. As the rotor spins within the stator, each poles magnetic field acts on the stator winding. Each time one pole completes one full revolution a pulse of AC power is generated on the windings and transmitted to the grid by conductors attached to the stator. The grid station has transformers which converts AC power to AC higher Voltage Current & BINGO!!! there's the light.

The hydrologic cycle is important to hydropower plants because they depend on water flow if there is a lack a rain near the hydro plant, water won't collect upstream. With no water collecting upstream less water flows through the hydropower plant and less electricity is generated. Yeah! that's no rocket science. Please like and subscribe to my channel for more videos. Thank You!.