Question

hydroelectric power plant explain with diagram step by step

Answer 1

Hydroelectricity is electricity produced from hydro power. In 2015 hydro power generated 16.6% of the world's total electricity and 70% of all renewable electricity,[1] and was expected to increase about 3.1% each year for the next 25 years.

Hydropower is produced in 150 countries, with the Asia-Pacific region generating 33 percent of global hydropower in 2013. Chinais the largest hydroelectricity producer, with 920 TWh of production in 2013, representing 16.9 percent of domestic electricity use.

The cost of hydroelectricity is relatively low, making it a competitive source of renewable electricity. The hydro station consumes no water, unlike coal or gas plants. The average cost of electricity from a hydro station larger than 10 megawatts is 3 to 5 U.S. cents perkilowatt-hour.[2] With a dam and reservoir it is also a flexible source of electricity since the amount produced by the station can be changed up or down very quickly to adapt to changing energy demands. Once a hydroelectric complex is constructed, the project produces no direct waste, and in many cases, has a considerably lower output level of greenhouse gases than fossil fuel powered energy plants.
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Answer 2

Hydropower plants capture the energy of falling water to generate electricity. A turbine converts the kinetic energy of falling water into mechanical energy. Then a generator converts the mechanical energy from the turbine into electrical energy.

Limitation of abundant potential water sources availability is expected to hinder global hydropower market. Hydropower plant requires huge initial investment which may hamper the market growth. However, long run operating cost is lower than other conventional source based plants owing to approximately zero raw material cost which is free water.