Introduction to Anpara - Copy

8/3/2019 Introduction to Anpara - Copy

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Mahatma Gandhi Missions

College of Engineering and Technology

NOIDA (U.P.)

Report on Practical Industrial Training

Carried out at

ANPARA THERMAL POWER STATION

SONEBHADRA

From: _21-06-2011 to 18-07-2011.

SUB. BY:- SUB. TO:- MECHANICAL ENGINEERING

SANTOSH MAURYA DEPARTMENT MGM COET , NOIDA

CLASS:- BT ME

UNI. ROLL NO.:-0809540040


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Mahatma Gandhi Missions

College of Engineering and Technology.

Training Coordinator Head of the Department

:-Mr. ANURAG KUMAR :-Mr. S. R. JAMBULE

Noida, U.P., India

Department of Mechanical Engineering

CERTIFICATE

This is to certify that Mr. SANTOSH MAURYA of B. Tech.

Mechanical Engineering, Class_BT ME, Roll No. 0809540040 ha

completed his Industrial Training during the academic year 20

21-06-2011 to 31-07-2011 at ATPS,ANPARA

SONEBHADRA.


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CONTENT

Introduction1

Major requirement.1

Raw material used..2

Salient data and design specifications....3

Design parameter...3

Introductory overview...6

Coal fired thermal power station..8

Boiler and auxiliaries...9

Draught.11

Ash handling system12

Advantage & disadvantage..13

Induced draft fan..14

Milling system......16

Primary air preheater....17

Turbine-salient design..18

Constructional features.19

Role of turbine in power generation.20

Governing system.22.


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INTRODUCTION TO ANPARA A

Name of the factoryANPARA THERMAL POWER STATION

Address:- A.T.P.P

POST:-ANPARA

Disst.:-Sonebhadra(u.p)

Location- ATPP is situated at the north bank of Rihand reservoir about 220 kms south from

Varanasi and about 35 kms west south from Renukoot by road.

Total proposed capacity 4030MW in four stages

(3*210MW+2*500MW+2*600MW+2*600MW)

Present capacity 1630MW Anpara

Project cost- Anpara ATPS-Rs.721Cr.

Anpara BTPS-Rs-2060Cr.

Major Requirements-

COAL-A.Source-Kakri,Bina,Khadia coal mines.

B.Maximum consumption-48,840 MT/ day for 3130 MW(F grade coal).

C.Mode of transportation- MGR Rail Transportation System.

Water Source-Rihand reservoirChimney height:- ATPS-220 meters, BTPS-275 meters.

Ash disposal-ash slurry pumped to ash dyke.

Commencement of Work-July 1980

Commissioning of Unit 1 of ATPS-28Mar 1986

Commissioning of Unit 2 of ATPS-28 Feb 1987

Commissioning of Unit 3 of ATPS-12 Mar 1988


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Boundary Wall of the factory is about 1Km (in all direction from the main plant equipment).

RAW Material Used:

1.Water From Rihand reservoir

2.Coal From NCL having high ash content and low calorific value about 20000T/day.

3.Acid We use very dilute acid (5% conc.) about 1.5T/day.

4.Alkali We use very dilute alkali solution (5% conc.) about 1.5T/day.

List of all the section/ process plant:

Cole Handling plant. Boiler Area. Turbine Area. Generator & Transformer. Switch-Yard. Dematerializing plant. Ash Slurry Disposal System.

Salient data and design specification

A. Salient data Capacity 3*210MW Project cost 657.74 Cr. Generation per annum at 72%plf 4500MU/Annum Main plant & equipment

Steam generator(boiler and aux.) M/s BHEL,INDIA

Turbine ,Generator aux. KWU,WEST GERMANY through BHEL

Coal consumption per annum (E grade) 2.72Milliontone/annnum

Ash disposal(per annum) .816Milliont/annum Cooling water 30Meter cube/sec.

Transportation of coal MARRY GO ROUND RLY SYSTEM


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B.Design ParameterBoiler:

Radiant reheat,pulverized fuel,corner fired,bottom steam generator.

Steam generating capacity 680 Pressure 155kg/cmsqure Steam temp. at super heater outlet 540DegreeC Reheat steam flow 598T/hr Steam pre. At RH 37.6-36.1kg/cm2 Steam temp at RH inlet/outlet 342/540degree celsius

Feed water: Temp.at EOC inlet: 242degreeC Pressure at ECO inlet: 180kg/cm^2 Rated flow at ECO inlet: 655T/hr

Fuel: F/E grade bituminous coal of CV: 3750Kcal/kg Fixed carbon: 28% to 24% Volatile matter: 28% to 21% Moisture: 11% to 15% Ash: 33% to 40% Fusion temp: 1400degreeC Pulverisers: 6 nos. Capacity: 39.6T/hr.at55HGI

Steam turbine:Reaction, condensing, reheating,horizontal tandem compound, three

cylinder,regenerative,throttle governed.


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Rated output: 210000KW Speed: 3000rpm Pressure of steam at inlet: 150kg/cm^2 Temp. of steam at inlet: 535degreeC Condenser area: 11435m^2 Circulating water flow: 27000m^3/hr. Condenser vacuum: (-) 0.89kg/cm^2

Generator:247 MVA,PF0.85(lag),terminal voltage 15.75KV,rotor hydrogen cooled,stator

water cooled.

Seal oil pressure: 4.8 to 5.8kg/cm^2 Hydrogen pressure: 3to3.5kg/cm^2 (hydrogen purity98.8%) Stator water pressure: 2.5 to 2.8kg/cm^2 Static excitation system: Thirstier convertor power pack Field breaker.

At present 54.09% or 93918.38 MW (Data Source CEA, as on 31/03/2011) of total electricity

production in India is from Coal Based Thermal Power Station. A coal based thermal power plant

converts the chemical energy of the coal into electrical energy. This is achieved by raising the steam in

the boilers, expanding it through the turbine and coupling the turbines to the generators which converts

mechanical energy into electrical energy.


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Introductory overview-In a coal based power plant coal is transported from coal mines to the power plant by railway in

wagons or in a merry-go-round system. Coal is unloaded from the wagons to a moving

underground conveyor belt. This coal from the mines is of no uniform size. So it is taken to theCrusher house and crushed to a size of 20mm. From the crusher house the coal is either stored in

dead storage( generally 40 days coal supply) which serves as coal supply in case of coal supply

bottleneck or to the live storage(8 hours coal supply) in the raw coal bunker in the boiler house.

Raw coal from the raw coal bunker is supplied to the Coal Mills by a Raw Coal Feeder. The Coal

Mills or pulverizer pulverizes the coal to 200 mesh size. The powdered coal from the coal mills

is carried to the boiler in coal pipes by high pressure hot air. The pulverized coal air mixture is

burnt in boiler in the combustion zone.

Generally in modern boilers tangential firing system is used i.e. the coal nozzles/ guns form

tangent to a circle. The temperature in fire ball is of the order of 1300 deg.C. The boiler is a

water tube boiler hanging from the top. Water is converted to steam in the boiler and steam is

separated from water in the boiler Drum. The saturated steam from the boiler drum is taken to

the Low Temperature Superheater, Platen Superheater and Final Superheater respectively for

superheating. The superheated steam from the final superheater is taken to the High Pressure

Steam Turbine (HPT). In the HPT the steam pressure is utilized to rotate the turbine and the

resultant is rotational energy. From the HPT the out coming steam is taken to the Reheater in the

boiler to increase its temperature as the steam becomes wet at the HPT outlet. After reheating

this steam is taken to the Intermediate Pressure Turbine (IPT) and then to the Low Pressure
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Turbine (LPT). The outlet of the LPT is sent to the condenser for condensing back to water by a

cooling water system. This condensed water is collected in the Hotwell and is again sent to the

boiler in a closed cycle. The rotational energy imparted to the turbine by high pressure steam is

converted to electrical energy in the Generator.

Diagram of a typical coal-fired thermal power station

Principal-Coal based thermal power plant works on the principal of Modified Rankine Cycle.
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Components of Coal Fired Thermal Power Station:

Coal Preparationi)Fuel preparation system:In coal-fired power stations, the raw

feed coal from the coal storage area is first crushed into small pieces and then conveyed to the

coal feed hoppers at the boilers. The coal is next pulverized into a very fine powder, so that coal

will undergo complete combustion during combustion process.

pulverizer is a mechanical device for the grinding of many different types of materials. Forexample, they are used to pulverize coal for combustion in the steam-generating furnaces of

fossil fuel power plants.

Types of Pulverisers: Ball and Tube mills; Ring and Ball mills; MPS; Ball

mill; Demolition.

ii)Dryersthey are used in order to remove the excess moisture from coal mainly wetted during transport.

As the presence of moisture will result in fall in efficiency due to incomplete combustion and

also result in CO emission.
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iii)Magnetic separators: coal which is brought may contain iron particles.These iron particles may result in wear and tear. The iron particles may include bolts, nuts wire

fish plates etc. so these are unwanted and so are removed with the help of magnetic separators.

The coal we finally get after these above process are transferred to the storage site.Purpose of fuel storage is two

Fuel storage is insurance from failure of normal operating supplies to arrive. Storage permits some choice of the date of purchase, allowing the purchaser to take

advantage of seasonal market conditions. Storage of coal is primarily a matter of

protection against the coal strikes, failure of the transportation system & general coal

shortages.

There are two types of storage:

1. Live Storage(boiler room storage): storage from which coal may bewithdrawn to supply combustion equipment with little or no remanding is live storage.

This storage consists of about 24 to 30 hrs. of coal requirements of the plant and is usually

a covered storage in the plant near the boiler furnace. The live storage can be provided

with bunkers & coal bins. Bunkers are enough capacity to store the requisite of coal. Frombunkers coal is transferred to the boiler grates.

2. Dead storagestored for future use. Mainly it is for longer period of time, and it isalso mandatory to keep a backup of fuel for specified amount of days depending on the

reputation of the company and its connectivity.

There are many forms of storage some of which are

1. Stacking the coal in heaps over available open ground areas.2. As in (I). But placed under cover or alternatively in bunkers.3. Allocating special areas & surrounding these with high reinforced concerted

retaking walls.

Boiler and auxiliaries:A Boiler or steam generator essentially is a container into which water can be fed and steam can

be taken out at desired pressure, temperature and flow. This calls for application of heat on the

container. For that the boiler should have a facility to burn a fuel and release the heat. The

functions of a boiler thus can be stated as:-

1. To convert chemical energy of the fuel into heat energy2. To transfer this heat energy to water for evaporation as well to steam for superheating.

The basic components of Boiler are: -1. Furnace and Burners2. Steam and Superheating

a. Low temperature superheater

b. Platen superheater

c. Final superheater


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Economiser:It is located below the LPSH in the boiler and above pre heater. It is there to improve the

efficiency of boiler by extracting heat from flue gases to heat water and send it to boiler drum.

Advantages of Economiser include

1) Fuel economy:used to save fuel and increase overall efficiency of boiler plant.

2) Reducing size of boiler: as the feed water is preheated in the economiser and enter boiler

tube at elevated temperature. The heat transfer area required for evaporation reduced

considerably.

Air Preheater:The heat carried out with the flue gases coming out of economiser are further utilized for

preheating the air before supplying to the combustion chamber. It is a necessary equipment for

supply of hot air for drying the coal in pulverized fuel systems to facilitate grinding andsatisfactory combustion of fuel in the furnace

Reheater:Power plant furnaces may have a reheater section containing tubes heated by hot flue gases

outside the tubes. Exhaust steam from the high pressure turbine is rerouted to go inside the

reheater tubes to pickup more energy to go drive intermediate or lower pressure turbines.

Steam turbines:Steam turbines have been used predominantly as prime mover in all thermal power stations. The

steam turbines are mainly divided into two groups: -

1. Impulse turbine2. Impulse-reaction turbine

The turbine generator consists of a series of steam turbines interconnected to each other and a

generator on a common shaft. There is a high pressure turbine at one end, followed by an

intermediate pressure turbine, two low pressure turbines, and the generator. The steam at high

temperature (536 c to 540 c) and pressure (140 to 170 kg/cm2) is expanded in the turbine.

Condenser:The condenser condenses the steam from the exhaust of the turbine into liquid to allow it to bepumped. If the condenser can be made cooler, the pressure of the exhaust steam is reduced and

efficiency of the cycle increases. The functions of a condenser are:-

1) To provide lowest economic heat rejection temperature for steam.

2) To convert exhaust steam to water for reserve thus saving on feed water requirement.

3) To introduce make up water.


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We normally use surface condenser although there is one direct contact condenser as well. In

direct contact type exhaust steam is mixed with directly with D.M cooling water.

Boiler feed pump:Boiler feed pump is a multi stage pump provided for pumping feed water to economiser. BFP is

the biggest auxiliary equipment after Boiler and Turbine. It consumes about 4 to 5 % of

total electricity generation.

Cooling tower:The cooling tower is a semi-enclosed device for evaporative cooling of water by contact with air.

The hot water coming out from the condenser is fed to the tower on the top and allowed to tickle

in form of thin sheets or drops. The air flows from bottom of the tower or perpendicular to the

direction of water flow and then exhausts to the atmosphere after effective cooling.

The cooling towers are of four types: -

1. Natural Draft cooling tower

2. Forced Draft cooling tower

3. Induced Draft cooling tower

4. Balanced Draft cooling tower

Fan or draught system:In a boiler it is essential to supply a controlled amount of air to the furnace for effective

combustion of fuel and to evacuate hot gases formed in the furnace through the various heat

transfer area of the boiler. This can be done by using a chimney or mechanical device such asfans which acts as pump.

i) Natural draught:

When the required flow of air and flue gas through a boiler can be obtained by the stack

(chimney) alone, the system is called natural draught. When the gas within the stack is hot, its

specific weight will be less than the cool air outside; therefore the unit pressure at the base of

stack resulting from weight of the column of hot gas within the stack will be less than the column

of extreme cool air. The difference in the pressure will cause a flow of gas through opening in

base of stack. Also the chimney is form of nozzle, so the pressure at top is very small and gasesflow from high pressure to low pressure at the top.

ii) Mechanized draught:

There are 3 types of mechanized draught systems

1) Forced draught system
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2) Induced draught system

3) Balanced draught system

Forced draught:In this system a fan called Forced draught fan is installed at the inlet of the

boiler. This fan forces the atmospheric air through the boiler furnace and pushes out the hotgases from the furnace through superheater, reheater, economiser and air heater to stacks.

Induced draught: Here a fan called ID fan is provided at the outlet of boiler, that is, just

before the chimney. This fan sucks hot gases from the furnace through the superheaters,

economiser, reheater and discharges gas into the chimney. This results in the furnace pressure

lower than atmosphere and affects the flow of air from outside to the furnace.

Balanced draught:-In this system both FD fan and ID fan are provided. The FD fan is utilized to

draw control quantity of air from atmosphere and force the same into furnace. The ID fan sucks

the product of combustion from furnace and discharges into chimney. The point where draught is

zero is called balancing point.

Ash handling system:The disposal of ash from a large capacity power station is of same importance as ash is produced

in large quantities. Ash handling is a major problem.

i) Manual handling: While barrows are used for this. The ash is collecteddirectly through the ash outlet door from the boiler into the container from manually.

ii) Mechanical handling: Mechanical equipment is used for ash disposal, mainly bucketelevator, belt conveyer. Ash generated is 20% in the form of bottom ash and next 80% through

flue gases, so called Fly ash and collected in ESP.

iii) Electrostatic precipitator: From air preheater this flue gases (mixed with ash) goesto ESP. The precipitator has plate banks (A-F) which are insulated from each other between

which the flue gases are made to pass. The dust particles are ionized and attracted by charged

electrodes. The electrodes are maintained at 60KV.Hammering is done to the plates so that fly

ash comes down and collect at the bottom. The fly ash is dry form is used in cement

manufacture.

Generator:Generator or Alternator is the electrical end of a turbo-generator set. It is generally known as the

piece of equipment that converts the mechanical energy of turbine into electricity. The

generation of electricity is based on the principle of electromagnetic induction.


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Advantages of coal based thermal Power Plant They can respond to rapidly changing loads without difficulty A portion of the steam generated can be used as a process steam in different industries Steam engines and turbines can work under 25 % of overload continuously Fuel used is cheaper Cheaper in production cost in comparison with that of diesel power stations

Disadvantages of coal based thermal Power Plant Maintenance and operating costs are high Long time required for erection and putting into action A large quantity of water is required Great difficulty experienced in coal handling Presence of troubles due to smoke and heat in the plant Unavailability of good quality coal

Maximum of heat energy lost Problem of ash removing


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Induced Draft Fan

Each 210 MW ATP boiler is provided with two ID fens of AN 25e-6 (13) bladed. Axial impulse

BHEL makes. One fan can serves the purpose under low loads, through from operational point

of view. It preferable to van both fans at low Load as well. Each fan is capable for delivering

180.3m^3/sec. flue gases from The furnace for subsequent through the chimney.

Each fan consists of the following sub assemblies-

1. Suction chamber.

2. Impeller vane control.

3. Impeller supporting on two bearing.

4. Outlet guide vanes.

5. Diffuser.

6. Flexible couplingPin type

7. Outlet damper.

8. Bearing - self oiling roller bearing type.

Each fan driven by 6.6KV, 1520KW motor.

Specifications:

1. Fan type Axial impulse2. No. of fans per boiler two3. Fan capacity 244m^3/sec4. Head developed 503mm WCL5. Speed 990 rpm6. Motor rating 6.6KV,1520KW,50Hz,3-phase 0.86

lag, 95%

7. Power input to fan 1432KW8. Full load current 162.6Amp.


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9. NO load current 45 Amp.10.Insulation class F

Primary Air Fans

Each 210 MW boiler is provided with two PA fans of type NDV 22 TICFSTO. Radial single

suction, backward curved bladed BHEL make. This fan handles Clean atmospheric air which is

then preheated in L jungstorm air preheater. The hot primary air which comes out of the air

preheater scavenges. The bowl Mill and carries the coal particles to the burners. A parts of cold

air is used for sealing RC feeder, coal dust line at the discharge of mill. The other part of

suction of seal air fans is also primary cold air line .

Specification:-

1. Fan capacity 70 m^3/sec

2. Head developed 1210 mm WCL, 720(MCR)

3. Speed of fans& motor 1480 rpm

4. motor rating 6.6 KV, 1250 KW, 50 Hz 3-phase,

0.88 lag 94%


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Milling system

There are six bowl mills in each unit of3*210 MWATPS fromwhich four millr are takeninti

service for full load butdue to pour quality of coal five mills actually run.

Bowl mills specifications

I. Rating 6.6KV,3- phase,AC 985rpmII. Speed 985rpmIII. Full load current 40.5Amp.IV. No load current 16 Amp.V. Power 340KVVI. Bearing DE(NU324)VII. NDE(6324)VIII. MakeM/s BHEL,Haridwar.

AIR PREHEATER

The purpose of air preheater is to recover heat from the gases which isat considerable high temp.

and transfer this heat to incoming cold air bymeans of continuously rotating heating surface

element of specially formed metal plant as the rotor slowly revolves the mass of heating surfaceelements alternate through the gas air passes. Heat is absorbed by the heating surface elements

passing through the hot streams, then as these same elements are carried through the air stream

they realesed the stored up heat. This increases the temp of incoming cold air .

tri sector air preheater has three sector for:

I. Flue gasesII. Primary air(use for drying and transportof coal through mill to burner)III. Secondry air (additional air for combustion around the burner)

Specifications-

I. No of air preheater 2II. Size 27 VI 80(T)III. Arrangement vertical


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IV. Approximately heating surface 1900m2 APHV. Compressed air required for air motor 380NM3/hr/APHVI. Air line pressure 7kg/cm2VII. Drive motor rating

Wattage 11KW

Speed 1480rpm

Current 22 Amp.

210MW KWUTURBINE-SALIENT DESIGN

&CONSTRUCTIONAL FEATURES-

The turbine is tendem compound design with separate design with separate hp,ip&lp cylinder.

The hp turbine is of single flow type while ip & lpturbine are of double flow type. This is

condencing type single reheat. It is basically engineered on reaction principle with throttlegoverning .the stage are arranged fully capacity turbo generator. The turbine is capable of

accepting variation from the rated condition within the limit as recommended by IEC-45.

MODULAR CONCEPT-

The turbine built on well proven design philosophy of modular principal

in steam turbine engineering field the radially designed hp,ip, lp turbine modules are combined

and sized to required output ,steam parameter and cycle configuration to give most economical

turbine set .its main over ability is achieved without impairing the realibility of the modules

which is governed by the shape and configuration or rotors ,cylinders and distance between the

bearing.

TECHNICAL DATA FOR 210 MW TURBINE-

A.Thermal data in MKS. UNIT:


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I. Main steam pressure 150kg/cm2

II. MAIN STEAM TEMP. 535

III.Reheat temp 535

IV. FULL LOAD STEM FLOW 614T/hrV. Back pressuere range .03ATA to .12 ATA (ABS)VI. NO. EXTRACTIONS 6VII. NO. OF stages in hpt 25

IPT 2*20

LPT 2*8

C.Weight,length&speed-I. Weight of turbine 475 toneII. Over all length 16.975 mIII. Over all width 10.5mIV. Rated speed 3000rpmV. MAX. speed 3090rpmVI. MIN. speed 2850rpm

CONSTRUCTIONAL FEATURES-

I. HP TURBINE-The outer casing of the turbine is barrel type constructional

without any massive horizontal flange. This unique constructional permits rapid start

up from any thermal ,state and high rates of load change of the turbo sets . The steam

and metal temp matching requirements are also less stringent .

As there is not asymmetry of mass distribution in transverse or longitudinal planes.

II. IP TURBINE-THE IP TURBINE IS DOUBLE FLOW TURBINE with a horizontal

spilit ,inner casing being pnumetically supported within the outer casing as well as lp

inner casing is suspended from top halves so as to totally eliminate the effect on TG


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center line with of flanges although the casing is off horizontal spilit design yet these

do not impose any constraints on start thing and rapid fluctuations.

III. LP TURBINE-Lp turbine is also double flow type with area optimally selected for the

expected vaccum conditions . the casing of lp turbine is connected with ip cylinder by

two cross around pipes. One on either side of the machine level with the floor. The

horizontally split fabricated ip casing is comprised of three shells the bearing

pedestals are mounted on foundation.

The Role of Turbines in Power

Generation

Large scale electrical energy production largely depends on the

use of turbines. Nearly all of the world's power that is supplied

to a major grid is produced by turbines. From steam turbinesused at coal-burning electricity plants to liquid water turbines

used at hydro-electric plants, turbines are versatile and can be

used in a number of applications. There are also gas turbines

that combust natural gas or diesel fuel for use in remote locations or where a large backup power

supplyis required.A turbine is a simple device with few parts that uses flowing fluids (liquids or gases) to produceelectrical energy. Fluid is forced across blades mounted on a shaft, which causes the shaft to

turn. The energy produced from the shaft rotation is collected by a generator which converts the

motion to electrical energy using a magnetic field.

Most power plants use turbines to produce energy by burning

coal or natural gas. The heat produced from combustion isused to heat water in boiler. The liquid water is converted to

steam upon heating and is exhausted through a pipe which

feeds the steam to the turbine. The pressurized steam flowimparts energy on the blades and shaft of the turbine causing itto rotate. The rotational mechanical energy is then converted

to electrical energy using a generator.

A good analogy would be the common practice of heating water in a teapot on your stove. When

the water is heated to boiling temperature steam is produced increasing the pressure inside of thepot. The increased pressure causes the steam to exhaust through a tiny hole at a high rate.
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After the steam exits the turbine it is fed to a cooling tower where the steam cools and reverts

back to water. You can see this occurring when driving past a power plant and noticing thewhite plumes of smoke being emitted from large towers. This is not smoke, but rather a product

of the hot pipes heating water vapor in the cooler air

and generating steam.

A similar turbine design is used to produce hydro-

electric power at dams. When water is released fromthe lake side of the dam to the river side, it is fed across

a series of turbines. The high rate of flowing water

causes the turbines to turn rapidly where this energycaptured and converted to electricity. Energy produced

by hydro electric means has the added benefit of not

using emission producing fossil fuels which will pollute

the air. However, hydro-electric dams do affect theenvironment in other ways as they can disrupt vulnerable ecosystems that rely on the

environment where the dam is built.

There are also other forms of large scale electricity generation, like nuclear and geothermal;

however they are still very similar in that they still use turbines to produce the electricity but the

water is just heated by an alternative source. Some added risks are involved when using nuclearreactors to produce heat thus limiting their widespread use.

Other smaller scale types of turbines exist to produce power in remote locations or to generate

power in areas of the world where a power grid has yet to be established. The advantage of thistype of turbine is its high efficiency rating. If the waste heat is recovered by heat exchanger and

used to power another generator, in a combined cycle configuration, the efficiency can be as high

as 60%. In a cogeneration configuration where the waste heat is recovered and used to for spaceand water heating, the efficiency can be as high as 90%.

There are numerous other benefits to using a turbine to produce electrical power. Gas turbinesproduce a large amount of power in a small package. They can be turned on and off on demand

and it costs a lot less money and takes a lot less time to build a turbine than it does to build a coal

or natural gas burning power plant. They are also ideal for situations where high demand existson a power grid for short periods of time, like hot days in the summer, and a turbine is in place to

carry the extra load.

Large electrical companies like Siemens and GE manufacture and custom build turbines from 10MW to over 400MW depending on the customer's demands. There are also used dealers and

distributors around the world that may have a new surplus or used turbine immediately available

that fits your specifications.

The simplistic design, versatility, and efficiency of turbines allow for its widespread use in

electrical power generation. When deciding on your power supply, be sure to investigate the useof a turbine if the electrical demand is large enough.
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GOVERNING SYSTEM

The turbine is equipped with electrohydraulic governing system to facilitate the operation of

turboset is an inter connected grid system . the electrical measuring of and processing of signaloffer the advantage such as flexibility, dynamic stability , and simple representation of

complicated functional relationship. The processed electrical signal is introduced at a suitable

point in for control valve and the controls are continuous propotionaltype the offering following

advantages the speed of turbine generator set can be control by these types-

Hydraulic speed control Electrohydraulic control. Change over from hydraulic to electro hydraulic control. Change over from electro hydraulic to hydraulic control.

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