Industrial Training at NTPC Anta Gas power Plant full report
#1

Presentation on Industrial Training at NTPC Anta Gas power Plant

Presented by:-
Dulara Sharma
Nand kishor


Topics to be covered:-
Introduction
Gas turbine
Generator
combined cycle process
Waste heat recovery boiler(WHRB)
Steam turbine
Generator & Transformer protection
Switchyard
Power evacuation







Introduction NTPC Ltd.
NTPC Limited is the largest power generating company of India.
A public sector company, it was incorporated in the year 1975 to accelerate power development in the country as a wholly owned company of the Government of India.
the installed capacity of NTPC is30,644 MW .

Introduction NTPC Ltd.
Through its
15 coal based (24,395 MW),
7 gas based (3,955 MW)
4 Joint Venture Projects (2,294 MW).
NTPC's share on 31 Mar 2008 in the total installed capacity of the country was 19.1% and it contributed 28.50% of the total power generation of the country during 2008-09.


Units Configuration

Gas Turbine is a heat engine
The Process Includes

Compression :
of working medium (air) taken from atmosphere in a compressor.
Combustion
Increase of working medium temperature by constant pressure ignition of fuel in combustion chamber.
Expansion
of the product of combustion in a turbine.
Start-up of the GT
Start-up of the GT is driven with the help of starting equipment which runs the generator as a motor with speed increasing from 0to 600rpm. At this speed a pilot flame is ignited in the combustion chamber, fuel (gas/naphtha) enters and combustion takes place.

The speed increases further both with the help of generator motoring and the combustion of fuel up to about 2000 rpm. At this speed starting equipment is switched off and only the generator is made ready for synchronization with the grid. After synchronizations, the turbine load increases up to base load with more and more fuel entering the combustion chamber.
Applications of Gas Turbine
Conventional applications are
Simple cycle operation.
 Combined cycle operation.

Electric utility companies use gas turbine predominantly in simple cycle and combined cycle applications.
Combined cycle operation is much efficient than open cycle operation.



Advantages of gas turbine w.r.t steam turbine are:

They can be started and loaded quickly.

Less maintenance and simple design.

They have lower installation cost.

GT plant involve less metal and material.

They donâ„¢t require enormous water for cooling.

They are more compact.






Combined Cycle Power Plant
Generator
Generator is three phases, two pole air cooled machine.

The mechanical energy generated by turbine is converted to electrical energy by the generator and appear in the stator winding in the form of current and voltage. This balances the torque of the gas turbine.

It lead the magnetic flux, and carries the field winding, the generator is self excited. The power required for the excitation is taken from the generator terminals and fed to the field winding through the excitation transformer and the thyristor- controlled rectifier units.


Waste Heat Recovery Boiler
Anta Combined cycle power plant also known as Waste Heat Recovery Boilers (WHRB) plant, which are of non-fired, dual pressure and forced circulation type. The boiler has two different water/steam cycle known as high-pressure system and low-pressure system.

Components of WHRB
The main components of the WHRB can be divided into following categories:
LP Economizer
LP Drum & Evaporator
LP Super-heater
HP Economizer
HP Drum & Evaporator


LP Economizer
In economizer the flue gas heats up the feed water.
After the economizer the feed water enters the LP evaporator and then to LP drum boiler.

HP BOILER PARTS
HP Economizer
The HP economizer coils are in two part one part is just below the LP economizer and other part is below LP super heater and both the coils are connected in series

HP Boiler Drum & Evaporator
The feed water in the HP-boiler drum is pumped through the evaporator by means of 2 x 100 % HP circulation pumps.

HP Super-Heater
The HP super heater consists of two parts with a spray attemperator between them. This configuration allows the temperature control of the super heated steam.


Condensate Pre-Heater
The main condensate is pumped by condensate extraction pumps (CEPs) to the feed water tank.

Before entering the feed water tank the condensate is passed through the condensate pre-heaters, which are situated at the tail end of the WHRBs and heated by the flue gas to achieve the highest cycle efficiency.
Cooling tower

Unit Auxiliary Transformer (UAT) Specification of three winding UAT : Rated power 6300 MVA Rated voltage no load HV 15.75 KV Rated voltage no load LV side 2.55 KV and 0.433 KV Rated current HV side 230.9 A Rated current LV side 1143 A and 1667 A Frequency 50 Hz  
Transformer protections
Transformer Differential protection.
Three phase over current protection.
Earth fault relay
Restricted earth fault relay
Buchholz relay


Generator Protections
Generator Differential Protection
Generator Stator earth fault protection
Generator rotor earth fault protection


Switchyard and transmission equipment
Transformer
Isolators
Circuit breakers
Earth switches
Wave trap
Lightning arrestor
Current transformer
Potential transformer
Bus bars







Bus Switching Schemes
ADVANTAGES OF GAS BASED PLANTS
HIGH THERMAL EFFICIENCY
LOW WATER REQUIREMENTS
ENVIRONMENT FRIENDLINESS
FAST START - UP
LOW INSTALATION COST
POWER EVACUATION FROM NTPC ANTA
There are total six 220 kv transmission lines for evacuation of power generated at Anta.
two lines for Bhilwara,
two lines for Jaipur and
one line for Kota and
one line for Rawatbhata power plant
Reply
#2
sir,
i want a full report made on intustrial training in ntpc anta.
Reply
#3
please give me the full report of gas plant......i need it to submit in the college..!! kishan108
Reply
#4


KAPIL YADAV
EC IV YEAR


[attachment=7904]

NTPC TODAY

The largest power generation company in India, with
comprehensive in-house capabilities in building and
operating power projects

Current operating capacity – 28,644 MW (including JV)

18 coal based (23209 MW) and 8 gas based (5435 MW)
power plants

Setting up hydro based power plants (2471 MW under
implementation)

Developing coal mines for captive use (47 mtpa by 2017)

Plans to become 50,000 + MW company by 2012
ONE OF THE LARGEST INDIAN COMPANIES WITH A MARKET
CAP OF MORE THAN US$ 50 BILLION

HAS A NET WORTH OF AROUND US$ 13 BILLION

THE LARGEST GENERATOR IN INDIA WITH 20% OF INSTALLED
CAPACITY & 28% GENERATION OF THE COUNTRY

494TH LARGEST COMPANY IN THE WORLD: 6TH LARGEST UTILITY
IN ASIA (FORBES RANKING – 2006)

PLATTS HAS RANKED NTPC AS NO. 1 INDEPENDENT POWER
PRODUCER COMPANY IN ASIA, 2007
GOVERNMENT HAS 89.5% STAKE

10.5% WITH PUBLIC

GROWTH STRATEGY
Multi pronged approach to capacity addition

• Greenfield projects
• Brownfield expansion
• Joint ventures /Acquisitions

• Diversification in related business areas

• Hydro projects
• Coal Mining
• Power trading
• Oil / gas exploration
• LNG value chain
• Consultancy services

NTPC .… Performance Highlights
Environmental Focus

• World’s largest ESPs used by NTPC

• Environmental monitoring emphasis

• Efforts to increase Energy efficiency

11 NTPC Stations amongst top 20 in the country in 2005-06 including
taken over plants.

Lower Plant Efficiency in India
The reported efficiency of Indian power plants is generally lower as compared
to efficiency of plants abroad, primarily due to
• Poorer condenser vacuum due to hot climatic conditions

• Higher unburnt carbon losses in boiler due to low grade high ash Indian coal

• Efficiency is reported on HHV basis of coal (same as the practice followed in USA)
as against LHV used elsewhere


Adoption of new technologies
NTPC has been a pioneer in introducing new technologies in the
country.

Currently, super critical technology, advanced class GTs are some of
the technologies under induction.

NTPC has worked on development of Integrated Coal Gasification

Our Energy Technologies Centre is working in both fundamental and
applied fields and has a well-defined mandate to develop various
technologies which will enhance plant reliability, efficiency etc.

Technologies… for cleaner environment
High Concentration Ash Slurry Disposal System

Pneumatic Conveying System for Fly Ash

Pipe Conveyors for Cross Country Coal Conveying

Vapor Absorption Refrigeration System for all

Air Conditioning Requirements of Station

Ash Water Recirculation System

ELECTROSTATIC PRECIPITATOR
NTPC has installed high efficiency Electrostatic Precipitators (ESP)
in all its coal fired units.

Typical Indian coal has 3300 kcal/kg GCV with 45 % ash content

• Four/Six pass ESPs with 10/9 fields each for 500/660 MW unit

• NTPC’s ESPs are amongst the world’s largest

• Electrode spacing of 400 mm

• ESP efficiency of the order of 99.97%

• Limits Outlet Dust Burden at outlet to 20 mg/Nm3 with design coal


Flue Gas Desulphurization (FGD)
Provision of space is being kept in all existing plants for installation of FGD in future

• NTPC is putting up Flue Gas Desulphurization (FGD) plant for its Bongaigaon
TPP (3 x 250 MW) which is proposed to use high sulphur (as high as 2%) coal.

• Adoption of wet lime stone based Gypsum recovery Process

• SO2 removal efficiency> 90%

• Utilisation of Gypsum envisaged







Reply
#5


[attachment=8126]

By:- RAJAT RAVI PALIWAL

ABOUT NTPC
NTPC has installed capacity of 29,394 MW.
15 coal based power stations (23,395 MW)
7 gas based power stations (3,955 MW)
4 power stations in Joint Ventures (1,794 MW).
The company has power generating facilities in all major regions of the country.
NTPC, was setup in 1975 world’s largest .
In Forbes list of World’s 2000 Largest Companies for the year 2007, NTPC occupies 411th place.


VISION:-

A world class integrated power major, powering India’s growth, with increasing global presence"

MISSION:-

"Develop and provide reliable power, related products and services at competitive prices, integrating multiple energy sources with innovative and eco – friendly technologies and contribute to society"

ABOUT NTPC NOIDA

SATELLITE COMMUNICATION DEP.
RND DEP.
HR DEP.
QUALITY CHECK DEP.

SATELLITE COMMUNICATION SYSTEM

It is also possible for satellites to communicate with other satellites
Communication can be by microwave or by optical laser


Communication frequencies

Microwave band terminology
L band 800 MHz - 2 GHz
S band 2-3 GHz
C band 3-6 GHz
X band 7-9 GHz
Ku band 10-17 GHz
Ka band 18-22 GHz


Basics: Advantages of Satellites

The advantages of satellite communication over terrestrial communication are:
The coverage area of a satellite greatly exceeds that of a terrestrial system.
Transmission cost of a satellite is independent of the distance from the center of the coverage area.
Satellite to Satellite communication is very precise.
Higher Bandwidths are available for use.


Basics: Disadvantages of Satellites

The disadvantages of satellite communication:
Launching satellites into orbit is costly.
Satellite bandwidth is gradually becoming used up.
There is a larger propagation delay in satellite communication than in terrestrial communication.

Major problems for satellites

Positioning in orbit
Stability
Power
Communications
Harsh environment



Reply
#6
hi............... i need full report at ntpc anta befor 8/8/11



rajesh kumar bilotia[/font]
Reply
#7

[attachment=15137]
ABOUT THE COMPANY
NTPC, the largest power Company in India, was setup in 1975 to accelerate power development
in the country. It is among the world’s largest and most efficient power generation companies. In
Forbes list of World’s 2000 Largest Companies for the year 2007, NTPC occupies 411th place.
Figure-1 A View of Badarpur Thermal Power Station, ew Delhi
NTPC has installed capacity of 29,394 MW. It has 15 coal based power s tations (23,395 MW), 7
gas based power stations (3,955 MW) and 4 power stations in Joint Ventures (1,794 MW). The
company has power generating facilities in all major regions of the country. It plans to be a
75,000 MW company by 2017.
NTPC has gone beyond the thermal power generation. It has diversified into
hydro power, coal mining, power equipment manufacturing, oil & gas exploration, power
trading & distribution . NTPC is now in the entire power value chain and is poised to become an Integrated Power Major. NTPC's share on 31 Mar 2008 in the total installed capacity of the country was 19.1% and it contributed 28.50% of the total power generation of the country during 2007-08. NTPC has set new benchmarks for the power industry both in the area of power plant construction and operations.
With its experience and expertise in the power sector, NTPC is extending consultancy service
to various organizations in the power business. It provides consultancy in the area of power
plant constructions and power generation to companies in India and abroad.
In November 2004, NTPC came out with its Initial Public Offering (IPO) consisting of 5.25% as
fresh issue and 5.25% as offer for sale by Government of India. NTPC thus became a listed
company with Government holding 89.5% of the equity share capital and rest held by
Institutional Investors and Public. The issue was a resounding success. NTPC is among the
largest five companies in India in terms of market capitalization.
Recognizing its excellent performance and vast potential, Government of the India has identified
NTPC as one of the jewels of Public Sector 'Navratnas'- a potential global giant. Inspired by its
glorious past and vibrant present, NTPC is well on its way to realize its vision of being "A world
class integrated power major, powering India's growth, with increasing global presence".
Figure-2
VISION
A world class integrated power major, powering India's growth with increasing global presence.
Mission
Develop and provide reliable power related products and services at competitive prices,
Integrating multiple e nergy resources with innovative & Eco-friendly technologies and
contribution to the society
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