Wind Power Plant PPT

8/13/2019 Wind Power Plant PPT

1/21


2/21

WIND POWER PLANT

Introduction to renewable sources.

Need of wind power plant

Site selection

Operating principleWorking & power generation

Merits and demerits

Present scenario & future


3/21

Introduction

The horiontal a!is wind turbine "#$WT% with upstream threeblade rotor has

resulted to be the most suitable t'polog' and conse(uentl' has found a remarkable

de)elopment* characteried both b' a (uick grown in sie and power* as well as b' a

wide spread.

Wh' wind power++

Wind power has alwa's gi)en the necessar' propulsi)e force to sailing ships and

has been also used to run windmills.

#owe)er* the recent attention paid to climate changes *the demand to increase the

amount of green energ' and fear of a decrease of oil fuel in the future ha)e promoted arenewed interest in the production of electrical energ' from renewable sources and also from

the wind power.


4/21

Generalities on wind power plants

Ph'sics and nature of wind

The ,arth continuousl' releases into the atmosphere the heat recei)ed b' thesun* but une)enl'.

In the areas where less heat is released"cool air ones% the pressure of

atmospheric gases increases* whereas where more heat is released* air warms

up and gas pressure decreases.


5/21

Since the atmosphere tends to constantl' reestablish the pressure balance* the air

mo)es from the areas where the pressure is higher towards those where it is lower-

therefore* wind is the mo)ement of an air mass* more or less (uick* between ones at

different pressure.

The profile and une)enness of the surface of the dr' land or of the sea deepl' affect thewind and its local characteristics- in fact the wind blows with higher intensit' on large and

flat surfaces* such as the sea/ this represents the main element of interest for wind plants

on and off shore.

Moreo)er* the wind gets stronger on the top of the rises or in the )alle's oriented parallel

to the direction of the dominant wind* whereas it slows down on une)en surfaces* such astowns or forests* and its speed with respect to the height abo)e ground is influenced b'

the conditions of atmospheric stabilit'.


6/21

SITE SELECTION OF

WIND POWER PLANT

Most important decision throughout 'our installation.

0ital part in the performance and efficienc' of a wind turbine.

#igh* e!posed sites.

Not suitable sites in highl' populated residential areas.

$)oid roof mounted turbines.

Power transmission loss

1istance between the turbine and the nearest obstacle 2onnection with national power grid


7/21

Workin Principle o! Wind tur"ine #

Wind turbines operate on a simple principle. Wind is merel' air in motion. Windturbines con)ert kinetic energ' from the wind that passes o)er the rotors into

electricit'.

The kinetic energ' in the wind turns two or three propellerlike blades around a

rotor. The rotor is connected to the main shaft* which spins a generator to create

electricit'.

Wind turbines are mounted on a tower to capture the most energ'. $t 344 feet "54

meters% or more abo)e ground* the' can take ad)antage of faster and less turbulent

wind.

Wind turbines can be used to produce electricit' for a single home or building* or

the' can be connected to an electricit' grid for more widespread electricit'

distribution.

wind turbines harness the power of the wind and use it to generate electricit'.

Simpl' stated* a wind turbine works the opposite of a fan. Instead of using

electricit' to make wind* like a fan* wind turbines use wind to make electricit'.


8/21


9/21

PARTS OF WIND T$R%INE #


10/21

Wind turbines consist of four main componentsBthe rotor* transmission s'stem* generator* and 'aw and

control s'stems

Rotor#

The rotor consists of the hub* three blades and a pitch regulation s'stem* all of which are located upwind of thetower. The blades are airfoils* which depend on aerod'namic lift to mo)e the blades and cause rotation. "$ir

mo)ing o)er the blades creates a negati)e pressure on the upper side of the airfoil and a positi)e pressure on

the lower side- this causes the rotor to rotate.% The design speed of the rotor is 3= rpm.

Trans&ission s'ste

The mechanical power generated b' the rotor blades is transmitted to the generator b' the transmission

s'stem. This consists of a gearbo! and a braking s'stem plus the au!iliar' lubricating and cooling s'stems.

The gearbo! is needed to increase the rotorCs speed "3= rpm% to the 3@44rpm speed of the generator. Thebraking s'stem is designed to lock the rotor when shut down.

Generator#

The generator con)erts the mechanical energ' to electrical energ' in an as'nchronous "induction% generator.

(aw and control s'ste&s#

The 'aw s'stem turns the nacelle into the actual wind direction using a rotar' actuator and a gear mechanism

at the top of the tower. $ full' automatic microprocessorbased control and monitoring s'stem is a part of thewind turbine. The control s'stem is designed for remote operation from the shorebased operations center )ia a

fiber optic communications s'stem.


11/21


12/21


13/21


14/21

ADVANTAGES AND DISADVANTAGES OF

WIND POWER PLANT

$1$NT$


15/21

1IS$10$NT$


16/21

Present Scenario:

Started de)elopment in 3AA4s.

India has the fifth largest installed wind power capacit' in the world

$s of 53 Kan 7435 the installed capacit' of wind power in India was 3A??A.3; mw

Statele)el wind power/

Tamilnadu ?3;@ mw


17/21


18/21

WIND POWER PLANTS STATUS ALL OVER THE WORLD

Click icon to add ict!re


19/21

uture/ The Ministr' of New and 8enewable ,nerg' "MN8,% has fi!ed a target of 34*;44 MW

between 744?H37* but an additional generation capacit' of onl' about =*444 MW

might be a)ailable for commercial use b' 7437.

The Ministr' of New and 8enewable ,nerg' "MN8,% has announced a re)isedestimation of the potential wind resource in India from 9A*354 MW assessed at ;4m

#ub heights to 347*?@@ MW assessed at @4 #ub height. The wind resource at higher

#ub heights that are now pre)ailing is possibl' e)en more .


20/21

"UESTIONS # "UERIES # DOU$TS %

Click icon to add ict!re


21/21

T#$NG >O:

P8,P$8,1 6> H

S#8,> S#$8M$

P8$TIG P$T,E

S#$# #$8S#

0$TS$E T$E$TI

8$2#IT T8I0,1I

M$N$N P$8IG#

H P8O. S$

Documents

Wind Power Plant PPT