HYDROELECTRIC POWER PLANTS

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HYDROELECTRIC POWER PLANTS By OMKAR KONDE : 

HYDROELECTRIC POWER PLANTS By OMKAR KONDE

CONTENT : 

CONTENT DAM. POWER STATION. HOW HYDROELECTRICPOWER WORKS? POWER TRANSMISSION. SIZE OF HYDROELECTRICPOWER STATIONS. ADVANTAGES & DISADVANTAGES. LOCATIONS OF HYDROELECTRICPOWER PLANTS IN INDIA.

DAM : 

DAM Dams are structures built over rivers to stop the water flow and form a reservoir. The reservoir stores the water flowing down the river. This water is diverted to turbines in power stations. The dams collect water during the rainy season and stores it, thus allowing for a steady flow through the turbines throughout the year. Dams are also used for controlling floods and irrigation. The dams should be water-tight and should be able to withstand the pressure exerted by the water on it. There are different types of dams such as arch dams, gravity dams and buttress dams. The height of water in the dam is called head race.

POWER STATION : 

POWER STATION Power station contains a turbine coupled to a generator. The water brought to the power station rotates the vanes of the turbine producing  torque and rotation of turbine shaft. This rotational torque is transferred to the generator and is converted into electricity. The used water is released through the tail race. The difference between head race and tail race is called gross head and by subtracting the frictional losses we get the net head available to the turbine for generation of electricity

Hydropower to Electric Power : 

Hydropower to Electric Power

How Hydropower Works : 

How Hydropower Works Water from the reservoir flows due to gravity to drive the turbine. Turbine is connected to a generator. Power generated is transmitted over power lines.

Turbine Classified : 

Turbine Classified

POWER TRANSMISSION : 

POWER TRANSMISSION

Is it renewable? : 

Is it renewable? Hydro-electric power is renewable . The Sun provides the water by evaporation from the sea and will keep on doing so The Sun evaporates water from the sea and lakes, which forms clouds and falls as rain in the mountains, keeping the dam supplied with water.

Sizes of Hydropower Plants : 

Sizes of Hydropower Plants Pico hydroelectric plant Up to 10kW, remote areas away from the grid Micro hydroelectric plant Capacity 10kW to 300kW, usually provided power for small community or rural industry in remote areas away from the grid Small hydroelectric plant Capacity 300kW to 1MW Mini hydroelectric plant Capacity above 1MW Medium hydroelectric plant 15 - 100 MW usually feeding a grid Large hydroelectric plant More than 100 MW feeding into a large electricity grid

Advantages of Hydroelectric Power Plants : 

Advantages of Hydroelectric Power Plants Once the dam is built , the energy is virtually free Water can be stored above the dam ready to cope with peaks in demand much more reliable than wind , solar or wave power No waste or pollution produced Electricity can be generated constantly Hydro-electric power stations can increase to full power very quickly unlike other power stations

Disadvantages of Hydroelectric Power Plants : 

The dams are very expensive to build , however many dams are also used for flood control or irrigation , so building costs can be shared Building a large dam will flood a very large area upstream , causing problems for animals that used to live there Finding a suitable site can be difficult - the impact on residents and the environment may be unacceptable. Water quality and quantity downstream can be affected, which can have an impact on plant life. Disadvantages of Hydroelectric Power Plants

HYDROELECTRIC POWER PLANTS IN INDIA : 

HYDROELECTRIC POWER PLANTS IN INDIA

THANK YOU : 

THANK YOU *****************************************

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