2. 2
Damodar Valley corporation is the first ever multipurpose river valley project of
independent India which came into being on July 7, 1948 by an Act of the constituent
Assembly ( Act no. Xiv, 1948).
Having command area of 24,325 sq.kms spreading across the damodar basin , boundaries of
which transcends the state of Jharkhand & West Bengal . The upper valley consists of two
entirely districts ( Dhanbad & Bokaro) & eight districts partly ( Hazaribagh, Koderma, Giridih,
chhatra, Palamu, Ranchi, Lohardaga & dumka) in the state of Jharkhand .The lower valley on the
other hand consist of five districts partly ( Burdwan & Hoogly, Howrah , Bankura, & purulia) in the
state of West Bengal.
Since the beginning, DVC has given due emphasis on power generation & distribution, besides
flood control and irrigation, eco conservation & socio- economic development.
Today DVC power is a vital input to core sectors including Steel plants , Railways, collieries along
with State Electricity Boards of Jharkhand & West Bengal, big & medium industries within &
beyond the Damodar Valley.
DVC was set up with the intent of promoting & operating the schemes which may cause social and
economic uplift in the valley region. DVC has already established it existence in discharging its
obligations for more than five decades in perfect harmony. The difficult but effective water
management by Corporation has turned the devastating river Damodar from ‘River of Sorrow’
to ‘River of Prospects and opportunities ’. Proficient management of water resources through
dams ,canals & barrage, DVC facilitates irrigation as well as industrial & domestic water supply
which at large benefited the region as a whole. It has also contributed significantly in
conservation of soil & promotion of schemes of social integration in valley area.
***********
3. 3
The mission
The mission at the time of its inception was :
Flood control
Promotion & operation of schemes for irrigation
Water supply for industrial & domestic use
Navigation & drainage
Generation , Transmission & Distribution of electrical energy
Promotion of a forestation and control of soil erosion in valley area
Promotion of public health , agriculture, industrial, economic & general well-being in
damodar valley
In keeping with industrialisation in DVC command area , power generation , transmission
& distribution gained priority for providing electricity to the core industries like steel ,
railways , coal & other industrial & consumers through respective State Electricity Boards .
However other mandated objectives also received equal importance as part of overall
responsibility and commitment of DVC.
Capacity addition programme for power generation gained a new direction when ministry
of power, Govt. Of India started advocating for setting up of thermal power plants at or
near pit heads & transmit power rather than transporting coal and advising DVC to world
towards adequate capacity addition during the Tenth and Eleventh plan in order to meet
the power vision. In addition to programme of capacity addition of 1210MW in Tenth Five
year plan and 6000MW in Eleventh plan , DVC has decided to rejuvenate the existing
unit through comprehensive overhauling and refurbishment.
Besides this , extension and augmentation of transmission network of DVC , devised with
the assistance of CEA and also strengthening of existing transmission and distribution
network are also under process of implementation.
DVC is implementing rural electrification project in states of West Bengal & Jharkhand
under “ Rajiv Gandhi Grameen vidyutikaran yojna ”
4. 4
THE VISION
To establish DVC as one of the largest power majors of Eastern India while discharging
the responsibilities of its other objects adequately .
In order to achieve this goal against the backdrop of competitive market scenario in the
power sector, the objectives of the corporation have been redefined.
CORPORATE OBJECTIVES :
Generate more power at lowest possible cost by improving operational
efficiencies of the existing plants, rejuvenating old generating units through
comprehensive overhauling as well as by installing new generating plants
Transmit , distribute and supply reliable and quality power at competitive tariff.
Improve the financial health of corporation by adoption of efficient industrial ,
commercial and human resource management practices.
Ensure optimum utilization of available water resources through effective and
Efficient management and harness the remaining potential of Damodar basin to
extent possible.
Fortify measures for environmental protection at plant levels and to continue with
activities of conservation in the valley area.
Strengthen socio-economic development for the inhabitants of villages
neighbouring major projects of DVC.
Pioneering Role
First multipurpose river valley project of Government of India .
A Govt. Of India organisation generating power utilizing two sources – Coal and water
First Govt. Of India project managing generation transmission and distribution of
electricity
First underground hydel station at Maithon
Bokaro Thermal Power station , biggest thermal power plant of the nation in 50’s of last
century
Bokaro Thermal Power Station boilers, first to burn pulverized coal in India.
First re-heat units in India utilizing high steam parameter at Chandrapura Thermal Power
station
Mejia Thermal Power Station , first in eastern India for the application of Direct Ignition of
Pulverized coal (DIPC) system for reducing oil consumption in the boiler.
5. 5
Mejia Thermal Power Station , First of its kind in eastern India with tube mills
With the time DVC developed and expanded its infrastructure Five thermal
power stations with a capacity of 2570 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 2796.5 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.
DVC Command Area 24,235 Sq. Kms
POWER MANAGEMENT
Total Installed Capacity 2796.5 MW
Thermal Power Stations Five Capacity 2570 MW
Hydel Power Stations Three Capacity 144 MW
Gas Turbine Station One Capacity 82.5 MW
Sub-stations and Receiving Stations
At 220 KV– 11 nos.
At 132 KV– 33 nos.
At 33 KV– 16 nos.
Transmission Lines
220 KV– 1500 ckt kms
132 KV– 3415 ckt kms
33 KV– 1070 ckt kms
6. 6
Water Management
Major Dams and Barrage
Tilaiya, Konar, Maithon Panchet dams and
Durgapur Barrage
Irrigation Command Area (gross) 5.69 lakh hectares
Irrigation Potential Created 3.64 lakh hectares
Flood Reserve Capacity 1292 million Cu.m.
Canals 2494 kms
Soil Conservation
Forests, Farms, Upland and Wasteland Treatment 4 lakh hectares (approx)
Check Dams 16,000 (approx)
7. 7
Name Location Existing Capacity Commissioning
HYDEL
Name Location Capacity Commissioning
THERMAL
Bokaro 'B' Dist- Bokaro
State- Jharkhand
630 MW
(3 X 210 MW)
U-I Mar 86
U-II Nov 90
U-III Aug 93
Chandrapura Dist- Bokaro
State- Jharkhand
890 MW
(3 X 130 MW)
+
(2 X 250 MW)
U-I Oct 64
U-II May 65
U-III July 68
U-VII Nov 11
U-VIII Jul 11
Durgapur Dist.- Barddhaman
State- WestBengal
350 MW
(1X140 MW)
+
(1X210 MW)
U-III Dec 66
U-IV Sept 82
Mejia Dist.- Bankura
State- WestBengal
2340 MW
(4 X 210 MW)
+
(2 X 250 MW)
+
(2 X 500 MW)
U-I Mar 96
U-II Mar 98
U-III Sept 99
U-IV Feb 05
U-V Feb 08
U-VI Sept 08
U-VII Aug 11
U-VIII Aug 12
DSTPS Dist.- Bardhaman
State- WestBengal
1000 MW
(2 X 500 MW)
U-I May 12
U-II Mar 13
KTPS Dist.- Koderma
State- Jharkhand
500 MW
(1 X 500 MW)
U-I July 13
Total Thermal 5710 MW
8. 8
Tilaiya River- Barakar
Dist.-Hazaribagh
State- Jharkhand
4 MW
(2 X 2 MW)
U-I Feb’53
U-II July’53
Maithon River- Barakar
Dist.- Burdhaman
State- West Bengal
63.2 MW
(2 X 20 MW)
+
(1 X 23.2 MW)
U-I Oct’57
U-II Mar’58
U-II Dec’58
Panchet River- Damodar
Dist.- Dhanbad
State -Jhankhand
80 MW
(2 X 40 MW)
U-I Dec’59
U-II Mar’91
Total Hydel . 147.2 MW
GRAND TOTAL 5857.2 MW
Powermap
9. 9
Sl.
No.
Project Unit Capacity
(MW)
Status
Project implementation by DVC own
1 MTPS Extension Unit#5 250 MW COD declared on
29.02.2008
2 MTPS Extension Unit#6 250 MW COD declared on
24.09.2008
3 CTPS Extension Unit#7 250 MW COD declared on
02.11.2011
4 CTPS Extension Unit#8 250 MW COD declared on
15.07.2011
5 Mejia TPS Unit#7 500 MW COD declared on
02.08.2011
6 Mejia TPS Unit#8 500 MW Full load achieved on
26.03.2011
7 Koderma TPS Unit#1 500 MW Full load achieved on
20.07.2011
8 Koderma TPS Unit#2 500 MW Under Construction
9 Durgapur Steel TPS Unit#1 500 MW COD declared on
15.05.2012
10 Durgapur Steel TPS Unit#2 500 MW Full load achieved on
23.03.2012
11 Raghunathpur Ph-I TPS Unit#1 600 MW Under Construction
12 Raghunathpur Ph-I TPS Unit#2 600 MW Under Construction
13 Bokaro-A TPS Unit#1 500 MW Under Construction
Project implementation through Joint Venture
1 Maithon RB TPS [by MPL, JV of
DVC & TPC]
Unit#1 525 MW COD declared on
Sept'2011
Unit#2 525 MW Full load achieved on
May'2012
10. 10
DVC started its Renovation & Modernization (R & M) Programme
in 1987 in order to meet stricter pollution control standards,
enhance operational efficiency and improve Plant Load Factor.
As part of its 10th plan activities DVC has planned for overall
improvement of performance through comprehensive R & M / LE
(Life Extension) of its old hydel and thermal power generating
units based on Residual Life Assessment (RLA) studies. This
conforms to the policy of the Government of India on LE of old
power generation units by R & M with economical investment.
Ten thermal units in operation from last 25 to 51 years and four
hydel units in operation from 45 to 47 years have been taken up
for RLA based R&M / LE work.
Renovation and Moderization (R&M) wing has been renamed as
Operation Services an Upgradation (OS&U) to look into the
upgradation process / sytem for improved and sustained
generation of power in DVC power plants.
Major Activities of Operation Services and Up-gradation
Operation Services
• Regular monitoring of day-to-day power generation and
associated O&M problems.
• Assistance to power stations for maximization of generation and
availability with approach towards zero forced outage.
• Assistance for induction of improved maintenance management
practices.
• Formulate new maintenance strategies.
• Generation and overhaul scheduling (Rolling Plan) and co-
ordination with MOP, CEA and other external agencies.
• Develop and implement new initiatives.
• Collate and review O&M. budgets and cost reduction initiatives.
• Co-ordinate O&M monitoring and lend proactive assistance.
• Co-ordinate of trip analysis/ lessons learnt / feedback recycle.
• Develop and update system and ensure compliance.
• Service support to power stations in terms of :
11. 11
Monitoring overhaul quality and other repair jobs at outside
works.
Expert assistance from OEM and other reputed agencies.
Developing improvement initiatives.
Implementing improvement initiatives.
Spares and vendor development.
Finalization of purchase/works contracts requiring assistance
headquarters.
Up-gradation
Technology up gradation in different areas of power
stations, replacement of obsolete equipment and
modification in different areas such as boiler, turbine and
their auxiliaries, coal handing plant, ash handing plant, coal
mills, electrical systems.
12. 12
FRONT VIEW OF SPILLWAYS OF MAITHON DAM :
Dams
Tilaiya Konar Maithon Panchet
Inauguration 21.02.53 15.10.55 27.09.57 06.12.59
On River Barakar Konar Barakar Damodar
District Hazaribagh Hazaribagh Dhanbad Dhanbad
State Jharkhand Jharkhand Jharkhand/
W. Bengal
Jharkhand/
W.Bengal
Height above river bed (meters) 30.18 48.77 50.00* 40.84*
44.00** 45.00**
Length (meters) 366 4535 4860 6777
Width of roadway (meters) 3.81 5.79 6.78 10.67
Power generating capacity 2 x 2 MW - 3 x 20 MW 2 x 40 MW
Storage capacity (million cu.m.)
To dead storage 75.25 60.4 207.24 170.37
To top of gates 394.74 336.76 1361.84 1497.54
Allocation of storage capacities (MCM)
For irrigation & power 141.86 220.81 611.84 228.21
For flood control 177.63 55.51 542.76 1086.76
Drainage area (sq. km.) 984.2 997.1 6293.17 10966.1
Reservoir (sq. km.)
At dead storage level 15.38 7.49 24.28 27.92
At maximum conservation pool 38.45 23.15 71.35 121.81
13. 13
Area top of gates 74.46 27.92 107.16 153.38
*Earthen Dam **Concrete Dam
Durgapur Barrage
Year of construction 1955
Length 692 m
Number of gates 34 (including under sluice)
Size of gates 18.3m x 4.9m [60 ft x 16 ft]
Left & right under sluice 18.3m x 5.5 m [60 ft x 18 ft]
Operating levels
Between RL. 64.5 m [211.5 ft] to RL. 63.4 m [208.0
ft]
Details of Canal Network.
Length
(Km)
Discharge at Head
Regulator (Cumec)
LBMC (Left Bank Main Canal)(Canal originating
from Durgapur Barrage)
136.8 260
RBMC (Right Bank Main Canal) (Canal originating
from Durgapur Barrage)
88.5 64.3
Total length of main and branch canals 2494
DURGAPUR BARRAGE
14. 14
Social Integration Programme
DVC launched its Social Integration Programme (SIP) in 1981.SIP is basically
an expression of DVC’s deep commitment to socio-economic and infrastructural
development of the communities residing within a 10 Km radius of its main
projects.
The programme started with 25 villages. At present it operates in 375 villages
covering 70 Panchayats in 12 blocks of Dhanbad, Giridih, Bokaro and
Hazaribagh districts of Jharkhand and Barddhaman, Purulia and Bankura
districts of West Bengal.
Areas covered under the programme:
·Education
·Agriculture
·Health
·Infrastructural Development
·Sports and Culture
·Rural Electrification
·Self- employment
·Social Forestry
DVC’s Social Integration Programme (SIP) offers the following facilities:
Non-formal adult education centers, rural libraries and community centers run by
DVC to help spread literacy among the communities residing within a 10 km
radius of DVC’s main projects. All inputs are fed by DVC
DVC runs 43 Sishu Siksha Kendras for imparting primary level education to
children of economically disadvantaged families and also to dropouts and those
over aged. At present 1200-1300 students are getting free primary education.
In these Kendras students get reading and writing materials free of cost. Even
Kerosene oil is provided to run these Kendras in the remote areas of Panchet,
Konar and Tilaiya projects.
15. 15
Children belonging to SIP villages are eligible to study in the schools meant for
the children of DVC’s employees.
Social Development
DVC implements integrated social development work in villages situated with in 10 km
area of it's major projects through it's social integration programme.
Environment Management
The Environment Management work of DVC consists of two parts the first part DVC is
installing proper equipment and augmenting majors to follow the pollution norms in it's
thermal power plants the second part consists of a forestations and other conservation
work for preservation of eco system of Damodar Valley area.
Soil Conservation
Soil Conservation work of DVC aims to check soil erosion, and siltation of dams,
improve agricultural production, afforestation and reserves ecological balance.
Rural Electrification
DVC has been entrusted with the responsibility of implementing rural electrification
project in selected district of West Bengal and Jharkhand under'RAJIV GANDHI
GRAMIN VIDYUTIKARAN YOJANA'.
Welfare
DVC provides various facilities for the well being of it's employees and their
dependents. Some of the facilities are also being extended to the villagers covered
under the social integration programme
DVC is engaged in the following activities to increase agricultural yield from
fields:
Initiation of micro-lift irrigation programmes in the upper valley
Digging of irrigation wells
Construction of check dams
Renovation of ponds
Arranging training programmes for farmers
DVC has constructed more than 16,000 check dams
Farmers of the local villages are encouraged to adopt modern scientific farming
practices, Experts from KVK, Sindri, Holy Cross Krishi Vigyan Kendra, Hazaribagh and
16. 16
Birsa Agricultural University, Ranchi and R.K. Mission of Amarkanan Sewa Ashram,
Purulia impart training in this regard.
DVC’s health programmes under SIP are basically preventive as well as curative in
nature
Preventive Health Services:
DVC organizes from time to time various camps
Pulse-polio immunization camp.
Family welfare and operation camp.
Anti-malaria camp.
Aids and HIV awareness camp.
Anti-diarrhea camp.
Eye (cataract) operation camp.
TB awareness and detection camp.
Infrastructural development works are essentially need-based activities:
Drinking water
Safe drinking water facilities through tap points, hand pumps and wells.
Communication
Construction of roads (WBM / bituminous / PCC), culverts, drainage system,
passenger shelters etc.
Education and Health Care
Construction of school buildings along with boundary walls, community
buildings, adult education centers and dispensary buildings
Irrigation Facilities
Installation of micro lift irrigation/RL
Renovation and construction of ponds
Construction of check dams and irrigation wells.
Others
Construction of toilets, urinals, washing and bathing ghats and burning ghats.
17. 17
In SIP villages DVC is actively engaged in promoting sports and culture as
recreational activities so that the inhabitants may develop a healthy mind and a
spirit of cooperation
Sports
Every year DVC organizes football tournament, cricket tournament, athletic
meet, volley ball tournament etc. in SIP villages
Sports materials are provided to various youth clubs set up by DVC.
Proper coaching by experts is arranged for promising players.
Cultural Activities
Different cultural activities based on local culture through various youth clubs set
up by DVC.
Training Programme and Self-employment
DVC is actively engaged in helping local unemployed youths find meaningful
occupations. For this the following facilities are offered:
Training centers at Maithon, CTPS, BTPS, DTPS and Panchet.
Youths sent to different centres run by outside organizations for training on
poultry, duckary, goattery, para-veterinary, plant propagation, dairy, diesel
pump mechanic, mushroom cultivation, piggery etc.
First time assistance by DVC in terms of raw materials and kits to help trained
youths set up their own business/ enterprises.
18. 18
We care for the Earth
DVC strongly believes that excellence in the environmental fields is of prime
importance. DVC strives to work with environmental issues in a consistent and
systematic manner.
DVC’s environmental management programme consists of
Pollution control at its thermal power stations and
Combating soil erosion and soil decay in order to restore and preserve the
quality of the land.
Pollution Control
Pollutants in the form of ash and emissions from stack are the major sources of
pollution at coal-based thermal power stations. In old units, of DVC, at Bokaro,
Chandrapura and Durgapur, which were commissioned, before pollution control
standards became stringent, the following measures have been taken to bring the
pollutants within the limits:
Initiation / installation of ESPs with additional fields to bring down emission
within limits.
Renovation of de-ashing and ash handling system.
Installation of oil and grease separator.
Plantation in and around plant areas, ash disposal areas and outside the
project areas.
Modern units at MTPS, commissioned during 1990s, comply with latest
pollution control norms, including the provision of reuse and recycling of
maximum affluent to conserve land and water.
DVC’s solid waste management system consists of evacuation of ash from the
ash ponds at BTPS, CTPS and DTPS, transported in protective manner and
dumped into abandoned open cast coal mines of CCL, BCCL and ECL
respectively. After filling up of the mines is over, the top surface is covered
with earth of sufficient thickness to facilitate growth of vegetation
20. 20
NATIONAL LOAD DISPATCH CENTRE supervise regional load dispatch centres
according to Sec-26(2)- act of Ministry of Power (2005).
These four regions are
ER - EAST REGION
WR- WEST REGION
NR – NORTH REGION
SR – SOUTH REGION
CLD- MAITHON comes under ER
CLD MAITHON IS RESPONSIBLE FOR :
Optimum Scheduling and dispatch of Electricity within the region
Monitor grid operation
Accounts of quantity of electricity transmitted through the regional grid
Supervise & control over Inter-State Transmission System.
Real Time Operation of grid control & dispatch of electricity through secure
& economic operations according with grid standard & grid code
21. 21
04/
01/
201
4
BTPS CTPS
DSTP
S
DTPS MTPS
K
TP
S
Total
Blo
ck
U#
1
U#
2
U#
3
U#
1
U#
2
U#
3
U#
7
U#
8
U#
1
U#
2
U#
3
U#
4
U#
1
U#
2
U#
3
U#
4
U#
5
U#
6
U#
7
U#
8
U#
1
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
D
C
S
G
Rev
No
0 1 2 0 0 0 4 1 2 1 3 3 1 6 3 6 0 2 0 0 0 1 0 3 2 4 0 0 1 3 1 3 0 5 0 5 0
1
0
1 0 1 2
000
0
1
6
5
1
3
0
0 0
1
7
0
0
1
0
0
7
5
1
0
0
7
5
1
0
0
7
5
2
3
0
2
0
0
0 0
4
9
5
0 0 0
1
2
0
9
0
1
9
0
1
5
0
1
9
0
1
5
0
0 0
1
9
0
1
5
0
1
9
0
1
5
0
2
3
0
1
8
0
2
3
0
1
8
0
4
8
5
4
0
0
0 0
4
8
5
4
0
0
36
70
.0
24
05
.0
001
5
1
6
5
1
3
0
0 0
1
7
0
0
1
0
0
7
5
1
0
0
7
5
1
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5
2
3
0
2
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0
0 0
4
9
5
3
8
0
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1
2
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9
0
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9
0
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0
1
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1
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1
9
0
1
5
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2
3
0
1
8
0
2
3
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1
8
0
4
8
5
4
0
0
0 0
4
8
5
4
0
0
36
70
.0
27
85
.0
003
0
1
6
5
1
3
0
0 0
1
7
0
0
1
0
0
7
5
1
0
0
7
5
1
0
0
7
5
2
3
0
2
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0
0 0
4
9
5
3
8
0
0 0
1
2
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0
1
9
0
1
5
0
1
9
0
1
5
0
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1
9
0
1
5
0
1
9
0
1
5
0
2
3
0
1
8
0
2
3
0
1
8
0
4
8
5
4
0
0
0 0
4
8
5
3
5
0
36
70
.0
27
35
.0
004
5
1
6
5
1
3
0
0 0
1
7
0
0
1
0
0
7
5
1
0
0
7
5
1
0
0
7
5
2
3
0
2
0
0
0 0
4
9
5
3
8
0
0 0
1
2
0
9
0
1
9
0
1
5
0
1
9
0
1
5
0
0 0
1
9
0
1
5
0
1
9
0
1
5
0
2
3
0
1
8
0
2
3
0
1
8
0
4
8
5
4
0
0
0 0
4
8
5
3
5
0
36
70
.0
27
35
.0
010
0
1
6
5
1
3
0
0 0
1
7
0
0
1
0
0
7
5
1
0
0
7
5
1
0
0
7
5
2
3
0
2
0
0
0 0
4
9
5
3
8
0
0 0
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2
0
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9
0
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0
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0
2
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0
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8
0
2
3
0
1
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0
4
8
5
4
0
0
0 0
4
8
5
3
5
0
36
70
.0
27
35
.0
NOTE : BLOCK COVERS 1145 , BUT DUE TO LACK OF SPACE IT CANNOT BE TABULATED
22. 22
SCADA/EMS
or data server maintain all data acquired
from other SLDCs etc an make it available
to display and reporting.
data obtained from the summary diagram at CLD is tabulated as :
UI RATE OVER INJECTION (3) UNDER INJECTION(2)
BSEB JSEB DVC GRIDCO WBSEB
GENERATION 308 242 3384 2479 3092
DRWL SCHD -1404 -458 931 -446 850
ACT DRAWL -1467 328 1003 227 847
DEMAND -1468 570 2382 2704 3939
GENERATION AND UI RATE OF ALL THE POWER STATIONS OF DVC
ON – 04-01-2014 TIME 10:39 am (row- power station, column- units)
DSTPS BOKAROb MEJIA WARIA CTPS132 CTPSb KTPS
412mw
6.30paise
165mw
3.43paise
154mw
3.44paise
- 79mw
3.49pse
- 404mw
0 0 0 - - 404mw
- 0 147mw 112 mw
4.77paise
104mw
3.49
0
- - 174mw 193mw 99mw -
23. 23
- - 231mw - 0 -
- - 232mw - - -
- - 443mw - - -
- - 0 - - -
COMMENTS :
The communication system failed to give real time data and UI
rate at that time ( e.g - UI rate of koderma)
MHS PHS THS -
UNIT 1 0 0 0 -
UNIT 2 0 0 0 -
UNIT 3 0 0 0 -
TIME BLOCK AVERAGE FREQUENCY
10:00 - 10:15 49.98 HZ
10:15 - 10:30 49.82 HZ
NET EXPORT - 470 EXPORT RATE 162.20 PAISE
NET IMPORT - 301 IMPORT RATE 202.90 PAISE
TIE LINES
LINE MW
PURULIA PG1 (S) 25
PURULIYA PG2 24
KALYANESHWARI- MAITHON P.G1 -41
KALYANESHWARI- MAITHON P.G2 -39
DHANBAD – MAITHON P.G1 -58
DHANBAD – MAITHON P.G2 -54
MEJIA-JAMSHEDPUR P.G1 96
DSTPS- JAMSHEDPUR P.G1 122
DSTPS –JAMSHEDPUR P.G2 117
MEJIA – MAITHON P.G1 127
29. 29
PRELIMINARY WORKS
Selection of Route
Reconnaissance Survey
Preliminary Survey
Approvals & Clearances for the Line Route
CONSTRUCTION ACTIVITIES
Detailed Survey & Plotting of Profile
Tower Spotting & Tower Schedule
Check Survey & Location Marking
Stub Setting
Erection of Towers & Fixing of Accessories
Stringing of Conductors & Earth Wire
Earthing
Protection of Tower Footings
Clearing of Right of Way
Final Checking
Testing & Commissioning
30. 30
TRANSMISSION ROUTE
The route of a transmission line is decided from the following main
considerations:
Shortest length, hence least capital cost.
Route near roads for easy approach & accessibility during construction
and maintenance.
Requirement of future loads near the proposed route so that the line
can easily be connected to the loads and optimal use of line.
Required separation distance from parallel communication lines (P&T,
Railways, etc.) for meeting the conditions of induced voltage for
obtaining PTCC approval.
Avoiding of forest areas as well as wild life sanctuaries as far as
possible.
Cost of securing and clearing right of way (ROW).
Maintaining statutory distances from Airports / Helipads
AVOID :-
Tough inaccessible areas
Towns and villages, leaving sufficient margin for their growth
Swamps and shallow lands subject to flood, marshy areas, low lying
lands, river beds and land slide zones, etc. involving risk of stability
for foundations
Rifle shooting areas and other protected areas such as army /
defence installations and ammunition depots.
Buildings / Storage areas for explosives or inflammable materials,
bulk oil storage tanks, oil or gas pipelines etc.
SURVEY OF LINES
METHOD : Theodolite , Total Station ,Satellite with Total Station
PLOTTING OF ROUTE PROFILE : Manual , PLSCAD
31. 31
APPROVAL REQUIREMENT
Forest clearance
Railway clearance
Clearance from mining authority
NH Clearance
Power and Telecommunication Coordination Committee (PTCC)
clearance
CEA Clearance
MINIMUM CLEARANCE
MINIMUM CLEARANCE CONTINUED
32. 32
MINIMUM CLEARANCE : IS: 5613 (Part II/Sec-1)-1976
MINIMUM CLEARANCE : AS PER - IS :5613 (PART II/SEC I) -1976
33. 33
TOWER USED FOR TRANSMISSION LINE
Lattice type tower
A2, S15, B30, C60, D90 – 132&220KV line
A2, B15, C30, D60 – 400KV line
Wide base tower
Narrow base tower
Multi circuit Tower
Special Crossing Tower
APPLICATION OF SAG TEMPLATE ON PROFILE
34. 34
TYPICAL BILL OF MATERIAL FOR THE CONSTRUCTION OF :
220KV DOUBLE CIRCUIT LINE
1. 220 kV D/C Tower with stub and cleats 10. ACSR Zebra conductor
i. ‘A’ type 11. 7 / 4.00 mm GSS Earth wire
ii. ‘B’ type 12. GI Bolts and Nuts
iii. ‘C’ type
iv. ‘D’ type
2. + 3.0 Mtr. Extension for 220 kV D/C Tower
i. ‘A’ type
ii. ‘B’ type
iii. ‘C’ type
iv. ‘D’ type
3. + 6.0 Mtr. Extension for 220 kV D/C Tower
i. ‘A’ type
ii. ‘B’ type
iii. ‘C’ type
iv. ‘D’ type
4. i. 220 kV D/C Special tower
ii. +9.0 Mtr. Extension for 220 kV D/C Special Tower
5. GSS type structure
i. ‘AT6’ type Column
ii. ‘AT8’ type Column
iii. ‘AB’ type Beam 13. Number plates
6. Earthing Material 14 Danger plates
i. Pipe type earthing set 15 Phase plates
ii. Counter poise type earthing set 16 circuit plates
iii. Coke Churi
7. ACSR Zebra conductor Hardware and accessories
i. Single tension Hardware compression type
ii. Double tension Hardware compression type
iii. Single suspension Hardware
iv. Double suspension Hardware
v. Preformed Armour Rod
vi. Vibration Damper
vii. Mid Span compression joint
viii. Aluminium Repair sleeve
xi. Jumper type suspension Hardware for single Zebra
8. Disc Insulators
i. 120 kN Disc Insulator
ii. 70 kN Disc Insulator
9. 7 / 4.00 Earth wire Hardware and Accessories
i. Tension Assembly compression type
ii. Suspension Assembly
iii. Vibration Damper
iv. Mid Span joint
v. Repair sleev
vi. Copper Earth bond
i. M 16 × 35 mm
ii. M 16 × 40 mm
iii. M 16 × 45 mm
iv. M 16 × 50 mm
v. M 16 × 55 mm
vi. M 16 × 60 mm
vii. M 16 × 65 mm
viii. M 16 × 70 mm
ix. M 16 × 75 mm
x. M 16 × 80 mm
xi. M 16 × 85 mm
xii. M 16 × 175 mm
Step Bolts
xiii. GI spring
washer, 16 × 3 mm
35. 35
TOWER CONSTRUCTION : EXCAVATION MARKING CHART
The excavation pit marking drawing indicates the distance of centres, sides and
corners of
the pits with reference to the centre point of the tower
From the dimensions shown in the drawing, the triangle ABC is first marked with the
help
of a measuring tape. The distance CD, equal to F (width of the pit) is marked on the ground.
The triangle AB'C is then marked by shifting the point B and without changing the points A
and C. The distance CD', equal to F, is then marked. The sides DE and D'E, both equal to
F, are then marked. The procedure is repeated for marking the other three pits.
The dimension G shown in the drawing is the centre to centre distance between
stubs of the
tower at their lowest point. The dimension M is the diagonal distance between the ends of
the stubs of the tower. The excavation pit marking drawing is prepared on the basis of these
dimensions. TOWER FOUNDATION : PYRAMID CHIMNEY TYPE
39. 39
FOLLOW THE STEPS TO ERECT THE TOWER
Erection of Tower body - first story
Erection of Tower body - second story upwards
Erection of cross arms
Conclusion:
Pulley and guy ropes are the minimum accessories to erect a tower
40. 40
STRINGING OF CONDUCTORS AND EARTHWIRE
HOSTING OF INSULATOR STRING
Single / Double suspension insulator strings are used on suspension towers
and single /
double tension insulator strings are used on angle and dead end towers. This is
indicated in
the tower schedule.
Before hoisting, all insulators are cleaned in a manner that will not spoil, injure
or scratch
the surface of the insulator, but in no case shall any oil be used for the purpose.
Disc insulators shall be examined for any cracks / chipping, etc. Disc
insulators having any
hair cracks or chipping or defective glazing or any other defect shall not be used .
NO. OF DISC / E&M STRENGTH (KN)
400kv 220kv 132kv
single suspension
–I string
1 X 23 120
KN
1 X 13 70
KN
1 X 9 45
KN
Double
suspension-I
String
2 X 24 120
KN
2 X 13
70KN
2 X 9 45
KN
Single suspension-
v string
2 X 23 120
KN
N.A N.A
Double suspension
v string
2 X 2 X 23 120KN N.A N.A
Single tension
string
1 X 23 120
KN
1 X 14 120
KN
1 X 10
120KN
Double tension
string
2 X 23
160KN
2 X 14
120KN
2 X 10
120KN
Single suspension
pilot string
2 X 23
120KN
1 X 13
70KN
1 X 9
45KN
44. 44
Substation construction
Selection of site
As near the load centre as possible.
As far as possible rectangular or square in shape for ease of
proper orientation of bus – bars and feeders.
Far away from obstructions, to permit easy and safe
approach / termination of high voltage overhead transmission
lines.
Free from master plans / layouts or future development
activities to have free line corridors for the present and in
future.
Easily accessible to the public road to facilitate transport of
material
As far as possible near a town and away from municipal
dumping grounds, burial grounds, tanneries and other
obnoxious areas.
g) Preferably fairly leveled ground. This facilitates reduction
in leveling expenditure.
h) Above highest flood level (HFL) so that there is no water
logging.
i) Sufficiently away from areas where police and military rifle
practices are held.
45. 45
Main Equipments of Sub-station:
Transformer
LA
CVT/PT
Isolator
CT
Circuit Breaker
Control & Relay Panel
Sub station layout
52. 52
INTRODUCTION
Maithon Hydel Power Station is located on the river Barakar about 12.9 km
above its confluence with the Damodar near the border of Dhanbad and
Burdwan districts of the states of Jharkhand and West Bengal respectively. The
unique feature of this Hydel Power Station is that it is located underground in
the left bank of the river and is the first of its kind in India. The Power Station
has a total generating capacity of 60 MW with 3 units of 20 MW each.
14-01-2014 - MAITHON HYDEL STATION AT A GLANCE :
drainage area 2430 sq mile
inflow maximum 2,50000 cusec
annual inflo max 70 inches
annual inflow min 30.5 inches
annual inflow avg 49 inches
area submerged at design 28,400 acre flood storag
length of back water 15 miles ( river)
maximum reservoir level EL- 500 ft
gross storage capacity 1040000 AC ft
flood control reservoir
storage
EL 480’ – 500 ft
Monsoon storage capacity EL 435- 480 ft
Dead storage capacity 168000 acre fit
Estimated cost of maithon
dam
13.68 crore
Estimated cost of hydel
station
4.71 crore
ACCESS TUNNEL LENGTH 700 FT
ACCESS TUNNEL WIDTH 18FT
ACCESS TUNNEL HIGHT 21 FT
ACCESS TUNNEL SLOPE 12 %
BASEMENT FLOOR EL 310.50 FT
TURBINE FLOOR EL 324 FT
DEPTH OF POWER HOUSE 184FT
53. 53
FROM ROADWAY
GENERATOR FLOOR EL 328 FT
AXIS OF TURBINE EL – 332 FT
SURGE CHAMBER EL 358 FT
TOP OF CRANE RAIL LEVEL 354 FT
ROTOR DIAMETER 14’
STATOR DIAMETER 21’
MAIN SHAFT DIAMETER 600MM
INTERMEDIATE SHAFT DIA. 630MM
WEIGHT OF INTR. SHAFT 10 TONS
NO. OF MAGNETIC POLES 34
WEIGHT OF THE STATOR 45+ 30 TONS
WEIGHT OF THE ROTOR 30 + 30 TONS
AIR GAP 11.5 TO 12 MM
SPAIRAL CASE DIAMETER 11.5/ 8.5’
DRAFT TUBE DIAMETER 10’/19.5’
NO. OF RUNNER BLADE 15
NO. OF GUIDE VAINS 24
NO. OF STAY VAIN 12
MONORAIL CAPACITY 10TONS
WEIGHT OF RUNNER 12 TONS
RUNNER CLEARANCE 1.25
GENERATOR CLEARANCE 0.2MM
TURBINE CLEARANCE 0.25MM
EOT CRANE CAPACITY 112 TONS
DISTANCE G1-G2-G3 55 FT
AXIS OF GENERATOR 1 54 FT
DISTANCE BTW TWO
TRANSFORMER (11KV/33KV)
23 FT
LENGTH OF GENERATOR
HALL
205’
WIDTH OF GENERATOR
HALL
45’
MAITHON DAM
HIGHT ABOVE RESERVOIR
BED= 162 FT
LENGTH ABOVE RESERVOIR
BED= 2061 FT
EARTH DYKE RIGHT=6209 FT NON OVER FLOW
DAM=
EARTH DYKE LEFT= 5329FT RIGHT ABUTMENT=395FT
BREACHMING DYKE =924FT LEFT ABUTMENT= 175.5 FT
CONCRETE DRAIN OVER ALL LENGTH=
54. 54
SPILLWAY=618FT 157.2 FT
SPILL WAY SECTION=108 FT INCLUDING BUCKET=147FT
MAIN EARTH DAM 103 FT UPSTREAM CLAY B ANK 272
BASIC COMPONENTS OF MAITHON HYDEL POWER STATION
MAITHON DAM ( RESERVOIR ) : MHPS rely upon Maithon dam that holds back water
creating large reservoir.
INTAKE -
Gates on the dam open and gravity pulls the water through the penstock, a pipeline that
leads to the turbine. Water builds up pressure as it flows through this pipe.
Turbine –
The water strikes and turns the large blades of a turbine, which is attached to a generator
above it by way of a shaft. The most common type of turbine for hydropower plants is the
Francis Turbine, which looks like a big disc with curved blades
Generators –
As the turbine blades turn, so do a series of magnets inside the generator. Giant magnets
rotate past copper coils, producing alternating current (AC) by moving electrons
Transformer –
The transformer inside the powerhouse takes the AC and converts it to higher-voltage current.
Power lines –
Out of every power plant come four wires: the three phases of power being produced
simultaneously plus a neutral or ground common to all three
Outflow –
Used water is carried through pipelines, called tailraces, and re-enters the river downstream.
UNIQUE FEATURES
Underground power station ( 1st
of its kind ) in India
Horizontal axis francis turbine with unique conical draft
tube
Black start facility (starting from low power generation)
56. 56
FRANCIS TURBINE PARTS
Spiral Casing: The spiral casing around the runner of the turbine is known as volute casing.
All throughout its length, it has numerous openings at regular intervals to allow the working
fluid to impound on the blades of the runner. these openings convert the pressure energy of
the fluid into momentum energy just before the fluid impound on the blades. to maintain a
constant flow rate despite the fact that numerous openings have been provided for the fluid
to gain entry to the blades,the cross-sectional area of this casing decreases uniformly along
the circumference.
Guide or Stay Vanes: The primary function of the guide or stay vanes is to convert the
pressure energy of the fluid into the momentum energy. it also serves to direct the flow at
design angles to the runner blades
Runner Blades:Runner blades are the heart of any turbine as these are the centers where
the fluid strikes and the tangential force of the impact causes the shaft of the turbine to
rotate and hence electricity is produced. In this part one has to be very careful about the
blade angles at inlet and outlet as these are the major parameters affecting the power
production.
Draft tube ( conical )- The draft tube is a conduit which connects the runner exit to the tail
race where the water is being finally discharged from the turbine. The primary function of
the draft tube is to reduce the velocity of the discharged water to minimize the loss of
kinetic energy at the outlet. This permits the turbine to be set above the tail water without
any appreciable drop of available head. The purpose of providing a draft tube will be better
understood if we carefully study the net available head across a reaction turbine.
57. 57
DRAFT TUBE / SPIRAL CASING / VOLUTE CASING
The Francis turbine is a type of reaction turbine, a category of turbine in which the working fluid
comes to the turbine under immense pressure and the energy is extracted by the turbine blades
from the working fluid. A part of the energy is given up by the fluid because of pressure changes
occurring in the blades of the turbine, quantified by the expression of Degree of reaction, while
the remaining part of the energy is extracted by the volute casing of the turbine. At the exit, water
acts on the spinning cup-shaped runner features, leaving at low velocity and low swirl with very
little kinetic or potential energy left. The turbine's exit tube is shaped to help decelerate the
water flow and recover the pressure.
GENERATOR 20MW – SIEMENS – GERMANY 3 PHASE
Y 11 KV – 1310- 1525 AMPERE , 176.5 RPM
25,000-29000KVA, COS₵ = 0.8
EXITATOR 295 /330 /445 V .....465 / 505 / 700 A
MAIN EXITATOR 310 / 333 / 500 V....478 /514 / 770 A
148 /171/ 385 KW , 176.5 RPM
V=140 , A =14
RAPIDIER DC GEN. 225/445V 23/25A , 5.2- 11 A
1485 RPM TEMP. 50degree TEMP
PILOT EXITATOR 230V / 15.6A , 3.6KW 1490 RPM
GEN. BEARING , LIFT PUMP MOTOR ELECTROMOTOREN WERKE KAISER,
58. 58
250V / 8A 2HP RPM 1500 50DEGREE TEMP
AC GOVERNER SCREW PUMP (MOTOR) 1425RPM, 400V ,31.5 A, 17.7KW , COS₵=.9
PUMP ACTIEDOLAGET, AAG , 70.3 NHB
INTAKE SERVICE GATE MOTOR SIEMEN, 400V 6.6A 32KW
MOTOR GES- SHUNT EXCIETED CONTINUOUS SERVICE 250V, 21.7 A
1500RPM
EXHUST FAN MOTOR- BREMA AC INDUCTION ,35HP ,1460RPM 400V 3PH
UNDER SLUICE GATE 13” 18’ 15TON
DRAFT TUBE GATE 20”6’ – 20”2’ , KEEPER BAR 4” X 1 X 8DEG
DRAFT TUBE OPENING 19” 6’
DRAFT TUBE GATE & TURBINE DISTANCE 62” 4 ‘
SURGE CHAMBER MONO HOIST
CRANE HAVING TWO ROPE TWO MOTOR
7.4HP 9FT PER MINUTE
33 FT LIFT
SUMP PUMP MOTOR/ 3 PH INDUTION MOTOR 415V, 1470RPM 830 galon/ min
MG SET 3PH MOTOR DC GENERATOR
RENOVATION & MODERNISATION OF UNIT # 2 MHPS
BHEL
HYDROGENERATOR - 23,200 KW - 29,000 KVA -11,000 VOLT
STAR CONNECTED - 3PH - 50 HZ - .8 PF - CLOCKWISE ROTATION
176.5 RPM - RUNNER DIAMETER 3030 MM - GUIDE VANE = 24
13 STAINLESS STEEL BLADES.
PLC IN UNIT # 2
59. 59
PROJECT
BY : PIYUSH KUMAR SAHAY VT-( 02/01/2014)
To implant solar power in Maithon: - an inception during vt
Location:
The right side of the spill way can be utilised as implanting solar panels .
1000 no.’s of 2 x 2 m panels may occupy this vacant space
