SAURYA BANERJEEElect. Engg., 2nd Year

Roll No.-1203074KIIT University

BhubaneswarRoll no:-1203074

oll no:-1203074Roll no:-1203074

Roll no:-1203074Roll no:-1203074

no:-1203074

Elect. Engg., 2nd YearElect. Engg., 2nd

DURGAPUR THERMAL POWER STATION

AcknowledgementAt the outset, I would like to express gratitude to the iconic institution of Durgapur Thermal

Power Station (DTPS), DVC, for the invaluable exposure to the treasure-house of information on technology in the field of “Power Generation & Distribution” .

Am thankful to Mrs. G. Chakravarty, Dy. Manager (HRD), and Mr. C. Mandal, Electrical Superintendent-II, for providing me the opportunity to carry out my vocational

training at DTPS.

I also take this opportunity to express my profound gratitude and deep regards to Mr. S. S. Chowdhury, Asst. Engineer (E), for his exemplary guidance, monitoring and constant encouragement throughout the course of this thesis. The help and guidance given by him

shall carry me a long way in the professional journey of life on which I am about to embark.

I am obliged to staff members of DTPS, DVC for the valuable information provided by them in their respective fields and also for their cooperation during the period of my assignment.

My heartfelt thanks to my University and my professors for allowing me to undergo 'Summer Training' at such a great organisation.

Lastly, I thank almighty, my parents, brother and friends for their constant encouragement without which this assignment would not have been possible.

- Saurya Banerjee

- Summer Trainee - B.Tech, Electrical Engineering, KIIT University, Bhubaneswar

Damodar Valley CorporationHISTORY:-

Damodar Basin

Damodar Valley Corporation(DVC), a legacy to the people of India, emerged as a culmination of attempts

made over a whole century to control the wild and erratic Damodar river. The river spans over an area of

25,000 km2 covering the states of Bihar & West Bengal.

The Damodar Valley has been ravaged frequently by floods of varying intensities and the first of the major

recorded flood dates back to 1730. Thereafter serious floods occurred at regular intervals, but it was the

flood of 1943 that left the worst devastation in its wake. As a result, the Governor of Bengal appointed a

Board of Inquiry headed by the Maharaja of Burdwan and the noted physicist Dr. Meghnad Saha as

member. In their report, the Board suggested creation of an authority similar to the Tennessee Valley

Authority (TVA) of United States of America. The Government of India agreed, and Mr. W.L. Voorduin, a

senior engineer of the TVA, was appointed to make recommendations for comprehensive development of

the valley. Accordingly, in August, 1944, Mr. Voorduin submitted his "Preliminary Memorandum on the

Unified Development of the Damodar River".

Mr. Voorduin’s "Preliminary Memorandum" suggested a multipurpose development plan designed for

achieving flood control, irrigation, power generation and navigation in the Damodar Valley. Four consultants

appointed by the Government of India examined its findings. They also approved the main technical

features of Voorduin’s scheme and recommended early initiation of construction beginning with Tilaiya to

be followed by Maithon.

Maithon Dam

By April 1947, full agreement was practically reached between the three Governments of Central, Bengal

and Bihar on the implementation of the scheme and in March 1948, the Damodar Valley Corporation Act

(Act No. XIV of 1948) was passed by the Central Legislature, requiring the three governments – the Central

Government and the State Governments of West Bengal and Jharkhand to participate jointly for the

purpose of building the Damodar Valley Corporation.

The Corporation came into existence on 7 July 1948 as the first multipurpose river valley project of

independent India.

Vision

To foster integrated development of Damodar Valley Command Area and achieve par excellence in its

multifaceted activities of control of floods, provision of irrigation, generation, transmission and distribution of

electrical energy and also soil conservation, unified tourism, fisheries, socio-economic & health

development of villages within a radius of 10 KM of its projects.

To establish DVC as one of the largest power majors of Eastern India while discharging the responsibilities

of its other projects adequately.

In order to achieve this goal against the backdrop of the competitive market scenario in the power sector,

the objective of the Corporation has been redefined.

Power Generation:-Entrusted with the responsibilities of providing the vital input power for industrial growth in the resource rich

Damodar Valley region, DVC has been practically operating as a pioneer, using latest available

technologies to supply bulk power at reasonable rates to the major industries.

DVC has maintained its lead role in the eastern region by adopting itself to the challenges of time and

technology during the course of last 64 years. DVC has been generating and transmitting power since 1953

and has succeeded not only in meeting the needs of consumers but has also helped to increase the

demand of power which itself is an index of development.

DVC Plants:-Thermal-Coal based

Sr. No. City State Installed Capacity in MW

1 Bokaro Thermal Power Station-B Jharkhand 630

2 Chandrapura Thermal Power Station Jharkhand 890

3 Durgapur Thermal Power Station West Bengal 350

4 Durgapur Steel Thermal Power Station West Bengal 1000

5 Mejia Thermal Power Station West Bengal 2,340

6 Koderma Thermal Power Station Jharkhand 500+500

7 Raghunathpur Thermal Power Station West Bengal 1200

8 Bokaro Thermal Power Station- A Jharkhand 1200

Total : 7,610

Thermal-coal cased (JVs)

Sr.

No.City State

Installed

Capacity in

MW

Remarks

1BPSCL

Power Plant

Jharkhan

d302

Owned by Bokaro Power Supply Corporation Limited

(BPSCL) a joint venture between DVC and Bokaro

Steel Limited

Sr.

No.City State

Installed

Capacity in

MW

Remarks

2Maithon

Power Plant

Jharkhan

d1,050

Owned by Maithon Power Limited a joint venture

between DVC and Tata Power

Total : 1,352

Hydel-Power based

Sr.

No.City State Installed Capacity in MW

1 Tilaiya Dam Jharkhand 4

2 Maithon Dam Jharkhand 63.2

3 Panchet Dam Jharkhand 80

Total : 147.2

Gas based

Sr.

No.City State Installed Capacity in MW

1 Maithon Gas Turbine Station Jharkhand 82.5

Total : 82.5

InfrastructureWith the time DVC developed and expanded its infrastructure seven thermal power stations with a capacity

of 22 MW, three hydro-electric power stations with a capacity of 144 MW and one gas turbine station with a

capacity of 82.5 MW contribute to a total installed capacity of 9136.5 MW. Presently DVC has 60 sub-

stations and receiving stations more than 5500-circuit km of transmission and distribution lines. DVC has

also four dams, a barrage and a network of canals that play an effective role in water management. The

construction of check dams, development of forests and farms and upland and wasteland treatment

developed by DVC play a vital role in eco conservation.

Water Management OverviewDVC has a network of four dams - Tilaiya and Maithon on river Barakar, Panchet on river Damodar and

Konar on river Konar. Besides, Durgapur barrage and the canal network, handed over to Government of

West Bengal in 1964, remained a part of the total system of water management. DVC dams are capable of

moderating floods of 6.51 lac cusec to 2.5 lac cusecs.

Four multipurpose dams were constructed during the period 1948 to 1959.

Maithon Dam

Panchet dam

Tilaiya Dam

Konar Dam

Flood reserve capacity of 1292 mcm has been provided in 4 reservoirs, which can moderate a peak flood

of 18395 cumec to a safe carrying capacity of 7076 cumec.419 mcm of water is stored in the 4 DVC

reservoirs to supply 680 cusec of water to meet industrial, municipal and domestic requirements in West

Bengal & Jharkhand.A barrage on river Damodar was constructed in 1955 at Durgapur for supply of

irrigation water to the districts of Burdwan, Bankura & Hoogly.

Irrigation Command Area (Gross) - 5.69 lakh hectares. Irrigation Potential Created - 3.64 lakh hectares.

Canals - 2494 km.

30,000 ha of land in the upper valley is being irrigated, every year by lift irrigation with the water available

from 16,000 (approx) check dams constructed by DVC.

Joint venture projectsMaithon Power Limited

A joint venture company by DVC and Tata Power has been formed to implement 1050 MW Maithon Right

Bank Thermal Power Project for meeting the energy needs of power deficient regions on export basis.

Bokaro Power Supply Corporation Limited (BPSCL)

A joint venture company of DVC and SAIL has been established to operate and maintain the captive power

and steam generation plant, hived off by SAIL and its Bokaro Steel Plant and supply power and steam

exclusively to Bokaro Steel Ltd.

DVC EMTA Coal Mines Limited

A joint venture company formed with Eastern Minerals & Trading Agency for development and operation of

Captive Coal Mine Blocks and supply of coal exclusively to DVC Thermal Power Projects of 10th and 11th

plan.

Mining & Allied Machinery Corporation (MAMC)

The Mining and Allied Machinery Corporation (MAMC) in Durgapur —one of the PSU's in India set up

under the rupee-rouble agreement and enjoying Soviet patronage in the early sixties.

Basic Needs and Overview of a Thermal Power Plant

The idea that STEAM has potential energy and can be converted into kinetic energy was given by famous scientist, Sir. James Watt. This idea became the governing principal of many mechanical processes and finally led to the success of Thermal Power Energy. The need of establishing a Thermal Power Plant came to engineers by the realization of the fact that Hydel Power could be utilized only for certain period of time in a year. This section will give the basic requirements for Thermal Power Plant.

SITE REQUIREMENT : - The basic requirements of thermal power plant is determined by the type, size and other specifications of the plant. ft is required to know the immediate capacity of the power plant after construction and the extension of capacity in the future, to determine the area required for construction of the plant. The basic things that are taken into consideration are:-

<1>Station Building <2> Coal Store <3>Cooling Towers <4>Switch yard compound <5>Surrounding areas and approaching.

GEOLOGY:- The geology of the site should be cost effective and the subsoil must be able to withstand huge load of foundation.

WATER REQUIREMENT :- Water is required in power plant for two basic needs, first is for steam generation and second is for cooling purpose. Thermal Power Plant requires huge volume of water, nearly of about 3 to 4 Tonnes/hr/MW only for steam generation. So site of plant must also have reliable and huge water sources located near to it.

COAL :- Coal is the prime requirement of any thermal power plant, it is the main source of fuel as it is most economic and residue of coal after combustion is also used by many industries like cement industries, so the plant must have reliable sources of coal and regular supply in huge amount like 20,000 Tonnes per week.

TRANSPORT :- It is one of the another vital factor of the plant as huge burden lies on transportation in daily basis because of huge need of coal, furnace oil, hydrochloric acid and other chemical products along with mechanical products.

DISPOSAL OF EFFLUENTS :-Due to heavy rate of coal combustion residual volume is also high. The main residual product is ash. The plant must have facilities like ash pond to dispose them safely without harming the environment.

TRANSMISSION :-The plant area must have route available for transmission over head cables to the nearest grid lines or load points which will be capable of accepting the generated power output of the power station.

CLIMATIC CONDITION :- The tropical climate is best for erection of thermal power plant, because areas having high humidity and fluctuating temperature lead to dew point and condensation which as a result damages the electrical machines and corrodes the insulation and over head cables.

PROXIMITY OF AIRFIEIDS :- The airfields must be studied properly to avoid mishaps as the chimney height ranges from 500 to 600 feet and boiler housing is of 200 feet in general.

PERSONNEL REQUIREMENTS : - To run a plant smoothly requirement of skilled and unskilled personnel is very important. So recruitment of workers and skilled personnel should be made carefully and in adequate amount.

AMENITIES: -Some considerations like availability of hospital, educational institutes and other facilities must be taken into account.

Durgapur Thermal Power Station

Durgapur Thermal Power Station is located near Waria Railway Station, 5 km from Durgapur city in West

Bengal. The power plant is one of the coal based power plants of DVC

Power PlantDTPS was set up in the sixties of last century with two 75 MW units and one 140 MW unit in the first stage.

Another 210 MW unit was added to the plant in the early eighties to augment supplies to the growing

industrial demand. The first 2 units of the Station had to be de-commissioned after a fire accident in 1985

Installed capacity

Stag

eUnit Number Installed Capacity (MW) Date of Commissioning Status

First 1 75 NA Closed

First 2 75 NA Closed

First 3 140 December, 1966 Running

Second 4 210 September, 1982 Running

U#3 has ABL make boilers and GE make turbine-generators, while U#4 has boiler, turbine and generator

are of BHEL make.

Coal Handling Plant Coal: The Black Diamond

Coal is the basic and the oldest raw material used on large scale throughout the world. Throughout history, coal has been a useful resource. It is primarily burned for the production of electricity and/or heat, and is also used for industrial purposes, such as refining metals. A fossil fuel, coal forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes that take place over a long period.

Coal Handling Plant In a coal based thermal power plant, the initial process in the power generation is "Coal Handling". Coal is extracted from the ground by coal mining, either underground by shaft mining, or at ground level by open pit mining extraction. The huge amount of coal is usually supplied through railways. A railway siding line is taken into the power station and the coal is delivered in the storage yard. The coal is unloaded from the point of delivery by means of wagon tippler. It is rack and pinion type. The coal is taken from the unloading site to dead storage by belt conveyors. The belt delivers the coal to Om level to the pent house and further moves to transfer point 8.

Operation of a Coal Handling Plant :-

The purpose of the Coal handling plant in a thermal power plant is to process raw coal & insure against their regular supply of coal which is dependent on many players in the supply chain.

The function of a CHP is to receive process, store, and feed the Coal bunkers consistently over the entire life of the Power plant.

Coal is received from mines in the form of lumps, the sizes varying from 100mm to 350mm, in two types of wagons through Rail; BOBR meaning Bogie Open Bottom Rapid discharge & BOXN meaning Bogie Open High Sided Side discharge Wagon BOBR wagons are unloaded in Track Hoppers & BOXN Wagons are unloaded by Wagon tipplers.

Coal is then supplied to the crusher house through Roller screens or Vibrating feeders to sieve the coal before feeding to the crusher; 20% of the coal that is received is already <20mm size so this is separated & only larger lumps are fed to the Crusher.

The crusher breaks the lumps to sizes <20mm which is the input size to the coal Pulverisers. The crushed coal is fed to the conveyors in the crusher house through Belt feeders; Coal is

either directly fed to the coal bunkers or to the Stacker/Reclaimers for stocking when the bunkers are full.

The stacking is done to insulate the plant against the erratic supply of coal; CERC allows stocking of 1 months stock of coal for Pithead plants.

In case of non-receipt of wagons the coal from the stockpile is reclaimed through the Stacker/Reclaimers & fed to the coal Bunkers.

To increase redundancy certain Plants also have Emergency reclaim Hoppers near the Crushed coal Stock pile where the dozers are used to feed coal to the bunkers when the Reclaimers breakdown.

Coal is conveyed by means of conveyor Belts in the coal handling plant.

Components of Coal Handling Plant:-

1. Stockpile 2. Stack 3. Reclaimer4. Crush House5. Tipplers6. Pull chord switch 7. Vibrating feeder 8. Flap gates9. Magnetic separator10. Metal detector 11. Belt weigher 12. Reclaim hopper

FURNACE & BOILER:What is a Boiler?

A boiler is a closed vessel in which water or other fluid is heated. The heated or vapourised water or fluid exits the boiler for use in various processes or heating applications, including boiler based power generation, cooking, sanitation etc.

Types of Boiler:-

1.Fire Tube Boiler:

Hot gasses pass through the tubes and the boiler feed water in the shell side is converted to steam.

These are generally used for relatively small steam capacities( around 12000 kg/hr) and low to medium steam pressure(around 18 kg/cm2)

These are operated with oil, gas or solid fuels

2.Water Tube Boiler:

Here the boiler feed water flows through the pipes and enters the boiler drum. The circulated water is heated by the combustion gases and converted into steam at

the vapour space in the drum. These boilers are selected when the steam demand(4500-120000kg/hr) as well the

steam pressures are very high.

#In DTPS, the boilers had the following characteristics:-

Vertical, top suspended water tube, single horizontal, non-radiant drum. Natural circulation(sub-critical boiler) Balance draft with pulverised fuel firing with tilting tangential firing system 2 part type boiler; one part with water wall furnace and radiant heat recovery occurs

and in the other part convection heat recovery occurs.

What is a FURNACE?

A furnace is a device used for heating. The name derives from Latin "fornax" meaning 

"oven". In DTPS, the furnaces have installed tangential firing.

ELECTRICAL SYSTEM OVERVIEWElectrical System of a Thermal Power Plant comprises of the following components:

Generators & Transformers Switchyard Power Distribution

Generators:-In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric current to flow through an external circuit. The source of mechanical energy may be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, aninternal combustion engine, a wind turbine,[1] a hand crank, compressed air, or any other source of mechanical energy. Generators provide nearly all of the power for electric power grids.

The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities. Many motors can be mechanically driven to generate electricity and frequently make acceptable generators.

A.C. generators or alternators (as they are usually called) operate on the same fundamental principles of electromagnetic induction as D.C. generators.

    Alternating voltage may be generated by rotating a coil in the magnetic field or by rotating a magnetic field within a stationary coil. The value of the voltage generated depends on-

The no. of turns in the coil

Strength of the field

The speed at which the coil or magnetic field rotates

Specification of Generattors in DTPS:

PARAMETERS UNIT-3 UNIT-4

Maker BHEL BHEL

MW 140 210

P.F 0.85 Lag 0.85 Lag

TRANSFORMERS:

It is a static device which transfers electric power from one circuit to the other without any change in frequency, but with a change in voltage and corresponding current levels also.

Here the transformers used are to transfer electric power from 15.75KV to 220KV or

400KVthat are provided to the national grid.

The step-up generator transformers are of ONAN/ANOF/AFOF cooling type.

Types of Transformers:-

1. Neutral Grounding Transformer(NGT)The NGT is used to prevent the generator from earth faults. It comprises of primary winding and secondary winding, the secondary winding is connected with a high value resistance. Whenever earth fault arises heavy current flows to the primary winding and as a result an e.m.f is induced in the secondary. The voltage drop across the resistance is sensed by the NGT relay and it actuates to actuate the Generator Circuit Breaker (GCB) and thus the generator is tripped.

2. Autotransformer(AT)High voltage auto-transformers represent an important component of bulk transmission systems and are used to transform voltage from one level to another. These auto-transformers are critical for regional load supply, inter-regional load transfers and for certain generator/load connections.

3. Power TransformerPower Transformers enhances the productivity 'as well as maximizes the capacity level of the high power supply equipments. These are ultimate for the regular power without any cut off. They are used for control high voltage and frequency for the different systems

4. Generating Transformer(GT)This is a type of Power Transformer where the LV winding is connected to the generator through the bus duct and HV winding to the transmission system. In addition to the features of Power Transformer, our Generator Transformer is

designed to withstand over voltage caused by sudden bad throw. It is built as a single or three phase unit and located in power stations

5. Station Service Transformer(SST)Station service voltage transformers (SSVTs) are intended to provide low voltage control power for substations, cell tower installations, and at switching stations by tapping directly from the high voltage line (220 KV BUSBAR ).

6. Unit Auxiliary Transformer(UAT)The Unit Auxiliary Transformer is the Power Transformer that provides power to

the auxiliary equipment of a power generating station during its normal operation.

This transformer is connected directly to the generator out-put by a tap-off of the

isolated phase bus duct and thus becomes cheapest source of power to the

generating station.

Details about the transformers at DTPS:-

There are 2 units currently in DTPS. Unit no. 3 generates 140 MW and Unit no. 4 generates 210 MW power.

Unit-3:-

Voltage level-o Generator Output=15.75 KV

o Generator Transformer-

oo LV side-15.75 KV

o HV side-220KV

Unit Auxiliary Transformer-o LV side-6.6 KV

o HV side-15.75 KV

Station Service Transformero LV side-6.6 KV

o HV side-7.5 KV

Unit-4:-

Voltage level-o Generator Output=14.75 KV

o Generator Transformer-

o LV side-14.75 KV

o HV side-132KV

Unit Auxiliary Transformer-o LV side-3.15 KV

o HV side-14.75 KV

Station Service Transformero LV side- 3.15 KV

o HV side-415 V

Switch YardWhat is Switch Yard?

The switchyard is a junction connecting the Transmission & Distribution system to the power plant. It means a collection of electrical equipment where high voltage electricity is switched using various components.

Function of Switch Yard

The function of electrical switch yard is to deliver the generated power from power plant at desired voltage level to the nearest grid or in Another way we can simply say that, switching the received power supply from various generating stations to various locations with respect to their requirement.

EQUIPMENTS IN A SWITCHYARD

1.Isolator :

It is a disconnection switch and to be operated on no load. Isolator is also capable of switching with the charging current and also breaks the bus transfer current which is its functional requirement.

An isolator switch is used to make sure that an electrical circuit can be completely de-

energized for service or maintenance.

USES OF ISOLATOR

1.It provide electrical isolation of the equipment, bus bar, and circuit from the live parts for maintenance purpose.

2. It is using for transfer of load from one bus to another.

2. Circuit Breaker :A circuit breaker is an automatically-operated electrical switch designed to protect an

electrical circuit from damage caused by overload or short circuit. Its basic function is

to detect a fault condition and, by interrupting continuity, to immediately discontinue

electrical flow. It can make or break a circuit either manually or by remote under

normal or fault conditions. It is operated only when off load.

a)Actuator lever - Used to manually trip and reset the circuit breaker.

b)

Actuator mechanism - Forces the contacts together or apart.

c)Contacts - Allows current when touching and break the current when moved apart

using Terminals Bimetallic strip.d)

Calibration screw - Allows the manufacturer to precisely adjust the trip current of the device after assembly.

e)

Arc divider/extinguisher — SF6 gas is used as arc extinguisher. Nowadays Vacuum arc extinguisher is used.

f) Driver— A 220v dc motor is used for switching purpose.

USES OF CIRCUIT BREAKER

Circuit breaker are used for all type of voltage.

It is using in high power laboratories. It is used for outdoor as well as indoor protection.

CURRENT TRANSFORMER:CT is a type of instrument transformer that is used in power system for measurement, detection, protection the system. Current transformers are used extensively for measuring current and monitoring the operation of the power grid.

USES OF CURRENT TRANSFORMER:-

Current Transformer are used for electronic meter whose VA are very less. V Unit protection such as bus zone, differential protection it is use.

Current transformers are used extensively for measuring current and monitoring the operation of the power grid.

Protection devices and revenue metering may use separate CTs to provide isolation between metering and protection circuits.

Potential Transformer :

Voltage transformers (VT) (also called potential transformers (PT) are a parallel connected

type of instrument transformer, used for metering and protection in high-voltage circuits or

phasor phase shift isolation. They are designed to present negligible load to the supply being

measured and to have an accurate voltage ratio to enable accurate metering.

Lightning Arrestor:

A lightning arrester is a device used on electrical power systems to protect the insulation on the system from the damaging effect of lightning. It is a protective device for limiting surge voltages by discharging or bypassing surge current, and it also prevents the flow of follow current while remaining capable of repeating these functions.

USES OF LIGHTNING ARRESTER

It protects the equipment from lightning stroke.

It is used to give electrostatic shielding against external field. Lightning arrester is used to provide path to unwanted excessive currents.

Busbar:

In electrical power distribution, a busbar is a thick strip of copper or aluminium that conducts electricity within a switchboard, distribution board, substation or other electrical apparatus. Busbars are used to carry very large currents, or to distribute current to multiple devices within switchgear or equipment. Constant frequency and voltage are always maintained in the busbar system.

USES OF BUSBAR

Bus bar are used to carry high current. It can be used for protection of generator and transformer.

Transfer Bus :

A back-up busbar to which any circuit can be connected independently of its bay equipment

(circuit-breaker, instrument transformer), the control of this circuit being ensured by another

specific bay, available for any circuit.

Wave Trap :

Power plants and substations are connected by high voltage power transmission lines which

transmit power typically at 50 Hz. These lines are also used to carry communication and

control signals for the operation of the grid (local equipment status, readings, alarms and

switching signals). These signals which are of much lower voltage than the power, use high

frequency carriers and wave trap filters are employed to separate the power and

communication signals at every receiving end.

Switchgear:In an electric power system, switchgear is the combination of electrical disconnect

switches, fuses or circuit breakers used to control, protect and isolate electrical equipment.

Switchgear is used both to de-energize equipment to allow work to be done and to clear

faults downstream. This type of equipment is important because it is directly linked to the

reliability of the electricity supply.

Typically, the switchgear in substations is located on both the high voltage and the low

voltage side of large power transformers. The switchgear on the low voltage side of the

transformers may be located in a building, with medium-voltage circuit breakers for

distribution circuits, along with metering, control, and protection equipment. For industrial

applications, a transformer and switchgear line-up may be combined in one housing, called a

unitized substation or USS.

POWER DISTRIBUTION:NATIONAL GRID

ER-NR 400 KV AC Link (Muzaffarpur-Gorakhpur)

400 KV AC Link (Patna-Balia)

500 KV HVDC at Sasaram-

Pusauli.ER-WR 400 KV AC Link (Rourkela-Raipur)

220 KV AC Link (Budipadar-

Korba)ER-SR 500 KV HVDC (Talcher-Kolar)

500 KV HVDC (Jeypur-

Gajuwaka)ER-NER 220 KV AC Link (Birapara- Salakati)

400 KV AC Link (Binaguri-

Bongaigaon)

Distribution from DTPS:There are 4 Voltage levels from which Electricity is distributed from DTPS. They are as

follows:

1. 220 KV

2. 132 KV

3. 33 KV

4. 25 KV

220 KV:-

1) West Bengal State Electricity Distribution Company (WBSEDCL),

Bidhannagar

a) Line #209

b) Line #210

2) Power Grid Corporation of India Limited (PGCIL), Parulia

a) Line #211

b) Line #212

3) Mejia Thermal Power Station (MTPS), DVC

a) Line #221

b) Line #222

132 KV:-1) WBSEDCL, Bardhaman

Line #75

Line #76

2) Alloy Steel Plant (ASP), Durgapur

Line #61

Line #62

3) DVC Substation, Kalipahari

Line #21

Line #20

4) DVC Substation, Jamuria

Line #100

5) Chandrapuria Thermal Power Station (CTPS), DVC

Line #61

6) Durgapur Projects Limited (DPL), Durgapur

Line #91

Line #92

32 KV:-

1) Durgapur Cement Works (DCW)

2) Durgapur Hitech Cement (DHTC)

25 KV:-

Supply To Railways network

ConclusionThe vocational training had been concluded in a very efficient way. I have acquired

thorough knowledge about generation, transmission and distribution of power from one

of the superpowers of power generation in Eastern India, Durgapur Thermal Power

Station (DTPS),Damodar Valley Corporation.

I underwent the training under well experienced and highly qualified engineers of

various departments viz. Mechanical, Electrical and Instrumentation depts of DTPS,

DVC. It was very inspiring to see the energetic work culture at DTPS. Although this is

an old power plant, the machines and entire instruments are functioning very well due

to proper maintenance and skill in handling them.

This Project Report has covered the Mechanical and Electrical aspects of power

generation in a thermal power plant.

I was able to acquire immense practical knowledge regarding the various stages of

"Power Generation", only the theoretical aspects of which I was aware of till now.

Saurya Banerjee

B. Tech, Elect. Engg.

KIIT University

Bhubaneswar