hydro electricity generation what is hydroelectricity? the production of electrical power through...
TRANSCRIPT
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Hydro Electricity Generation
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What is Hydroelectricity?
the production of electrical power through the use of the gravitational force of falling or flowing water
Hydropower is the renewable energy contained in flowing water
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History
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History
In 19th century, Electrical Generator was developed.
In 1878 the world's first hydroelectric power scheme was developed at Crag side in Northumberland.
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Appleton, Wisconsin became the first operational hydroelectric generating station in the United States, in 1882,
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Still in use today, Niagra Falls was the first hydropower site developed for a vast quantity of electricity
Hoover Dam's(U.S) initial 1,345 MW power station was the world's largest hydroelectric power station in 1936.
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Structural Overview
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Basic Structure
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Classification of hydropower plantsAccording to
Capacity
Large
Medium
Small
Mini
Micro
Pico
According to head
High
Medium
Low
According to purposeSingle
purpose
Multi purpose
According to facility types
Run-of-River
Reservoirs
Tidal
Pumped storage
According to hydrological
relationSingle
Cascade
According to transmission
systemIsolated
Connected to grid
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Types of Hydroelectric Power Plants
Conventional DamsPumped-StorageRun of River.Tide Power HydroelectricityUnderground Hydroelectricity
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Conventional Dam
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Pumped Storage
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Run of The River
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Tide Power Hydroelectricity
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Power Plant Layout
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How Electricity Generate
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Six Important Components
1) Dam
2) Water Reservoir
3) Intake or Control Gates
4) The Penstock
5) Water Turbines
6) Generators
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Types Of Turbine
Turbines
Impulse Type
Pelton Cross Flow
Reaction Type
Propeller
Francis Kinetic
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Basic Parts Of Generator & Turbine
Generator Turbine
Rotor Runner Blades
Stator Spiral Case
Shaft Wicket Gates
Guided Bearing Draft Tube
Exciter Runner Cone
Hydraulic Brecks Hydraulic Brecks
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Governor System To control the opening and closing of
Wicket gates To stabilizing Frequency To control the Generation For monitoring
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Cross sectional view of Power House
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Types Of Power House LARGE: >100 MW MEDIUM: 25 – 100 MW SMALL: 1-25 MW MINI: 100 KW - 1MW MICRO: 5 – 100 KW PICO: < 5 KW
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Transmission
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Facts & Figure
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Advantages
No pollutants! Say no to greenhouse gases Saving natural resources A predictable renewable source of energy Dams as a water reservoir Economical advantage Constant source of energy Controllable source of energy Flexibility
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Disadvantages Emission of methane and carbon dioxide Disturbance of habitat Installation costs Limited use Divert natural waterway Effects on agriculture Fish killing Disputes between people Siltation and flow shortage. Failure risks
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World Largest Dams
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Thank You!