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DIFFERENT HYDRO ELECTRIC
POWER PLANTS
UNIT-II BEYOND SYLLABUS)
K.RADHAKRISHNANMECHANICAL DEPARTMENT
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IMPORTANCE
The importance of generating power
through hydel resources is increasing
day by day as the generating costthermal plants is increasing rapidly.
In addition to this, there are many
problems associated with thermal plantlike coal mining, cleaning, transportation
and storage.
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Conventional sourcesinclude: firewood,
cattle dung cake, coal,petroleum, natural
gas and electricity (both hydel andthermal).
Non-conventional sources include solar,
wind, tidal, geothermal, biogas and atomicenergy.
Energy resources are the chief sources of
fuel and power in India.
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HYDRO POWER PLANT IN INDIA
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HYDRO ELECTRIC POWER
GENERATION
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THERE ARE THREE TYPES OF
HYDROPOWER FACILITIES
Impoundment
Diversion
Pumped storage
Some hydropower plants use dams and
some do not. The images below show
both types of hydropower plants
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IMPOUNDMENT
The most common type of hydroelectricpower plant is an impoundment facility.
An impoundment facility, typically a large
hydropower system,
Uses a dam to store river water in a
reservoir. Water released from the
reservoir flows through a turbine,
spinning it, which in turn activates a
generator to produce electricity.
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IMPOUNDMENT
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DIVERSION
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PUMPED STORAGE
Another type of hydropower called pumped
storage works like a battery It stores energy by pumping water up hill to a
reservoir at higher elevation from a second
reservoir at a lower elevation.
When the demand for electricity is low, a
pumped storage facility stores energy by
pumping water from a lower reservoir to an
upper reservoir. During periods of high electrical demand, the
water is released back to the lower reservoir and
turns a turbine, generating electricity.
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SIZE OF HYDROELECTRIC
POWER PLANTS
Facilities range in size from large power
plants that supply many consumers with
electricity to small and micro plants thatindividuals operate for their own energy
needs or to sell power to utilities
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LARGE HYDRO POWER
Although definitions vary, Its defineslarge hydropower as facilities that have a
capacity of more than 30 megawatts.
SMALL HYDRO POWER
Although definitions vary, Its defines
small hydropower as facilities that have acapacity of 100 kilowatts to 30
megawatts.
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MICRO HYDRO POWER
A micro hydropower plant has a capacity
of up to 100 kilowatts. A small or micro-
hydroelectric power system can produceenough electricity for a home, farm,
ranch, or village.
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TH NK YOU