powerplant

1. A Presentation on
Various Types of Power Plants and Overall
Power Management Scenario of Bangladesh
Training Arranged by
Rajshahi Training Center
Bangladesh Power Development Board
Rajshahi, Bangladesh
Presented by,
Sajib Das
Sadat Hossain Bhuiya
Department of EEE, RUET
2/4/2023 1

2. Course Content EEE
RUET
Course Name: Substantial Training
Duration of Course: 03/04/2022 to 10/04/2022 (08 Days)
Venue: Rajshahi Training Center, BPDB, Rajshahi
Course Director: Engr. Md. Hasibul Huda, Director,
Rajshahi Training Center, BPDB, Rajshahi
Course Coordinator: Engr. Md. Shahabuddin, Deputy Director,
Rajshahi Training Center, BPDB, Rajshahi
Associate Course Coordinator: Engr. Md. Golam Kibria, Assistant Engineer,
Rajshahi Training Center, BPDB, Rajshahi
Assistant Course Coordinator: Md. Rony Khan, Sub-Assistant Engineer,
Rajshahi Training Center, BPDB, Rajshahi
2/4/2023 2

3. Overview of Power System EEE
RUET
Generation
Transmission
Distribution
Power
System
1
2
3
For
Generation
Base Load Power Plant: This plant operate continuously stopping
only for maintenance or unexpected outages.
Peaking Power Plant: Power plants that generally run only when
there is a high demand, known as peak demand, for electricity.
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4. Power Generation Units in Bangladesh
(Fuel Type Wise)
Installed Capacity of BPDB Power Plants as
on April 2022
Fuel Type
Capacity(Uni
t)
Total(%)
Coal 1768.00 MW 7.93 %
Gas 11330.00 MW 50.82 %
HFO 6238.00 MW 27.98 %
HSD 1341.00 MW 6.01 %
Hydro 230.00 MW 1.03 %
Imported 1160.00 MW 5.2 %
Solar 229.00 MW 1.03 %
Total 22296 MW 100 %
EEE
RUET
Gas based power plant has the highest share among them.
2/4/2023 4

5. Power Generation Units
(Fuel Type Wise) (Cont.)
Fuel Type
Capacity(Uni
t)
Total(%)
Coal 1688.00 MW 7.96 %
Gas 10995.00 51.83 %
HFO 5576.00 MW 26.28 %
HSD 1337.00 MW 6.3 %
Hydro 230.00 MW 1.08 %
Imported 1160.00 MW 5.47 %
Solar 229.00 MW 1.08 %
Total 21215 MW 99 %
Derated Capacity of BPDB Power Plants as on April
2022
EEE
RUET
2/4/2023 5

6. List of Power Plants
in Bangladesh
Nuclear
2.4 GW Rooppur Nuclear Power Plant is under construction. The two units of VVER-1200/523
be operational in 2023 and 2024.
Power station Location Capacity (MW) Coal Type
Barapukuria Power
Durgapur,
Dinajpur
525 Bituminous
Payra Thermal Power
Kalapara
District
1320 Sub-bituminous
Coal Fired
Power station Location Capacity (MW) Coal Type Plant type
Expected in
Operation
Matarbari Power
Station
Maheshkhal
Upazila, Cox's
District
1200 Sub-bituminous Ultra Super 2024
Rampal Power
Rampal
Upazila, Bagerh
District
1320 Sub-bituminous Ultra Super
Coal Fired (Under Construction)
EEE
RUET
2/4/2023 6

7. List of Power Plants
in Bangladesh (Cont.)
Power station Location Capacity (MW)
Ashuganj Power Station Brahmanbaria 1627
Ghorasal Ghorasal 950
Shikalbaha Shikalbaha, Chattagram 150
Siddhirganj Siddhirganj 260
Orion Group(4 plant) Narayangonj & Khulna 400
Lakdhanavi Bangla Power Comilla 52.2
Desh Energy Chandpur Power Chandpur 200
Katakhali Peaking Power Plant Rajshahi 50
Oil and Gas-fired Thermal
EEE
RUET
2/4/2023 7

8. List of Power Plants
in Bangladesh (Cont.)
Power Station Location Capacity(MW) Expected in operation
Feni Lanka Power Limited Feni 114 End of September 2019
Manikganj Power Generations
Limited
Manikganj 162 January 2020
Bhairob Power Limited Bhairab 55 January 2020
Payra LNG Power Plant
Kalapara Upazila, Patuakhali
District
3600
1st Phase in December 20222nd
Phase in December 2023
Under Construction
Gas turbines
Power station Max. Capacity (MW) Turbines Fuel type
Meghnaghat 450 2+1 natural gas
Ashuganj 146 2+1 natural gas
Haripur 360 1+1 natural gas
Goalpara, Khulna 265 HFO
Mymensingh 210 4+1 natural gas
Baghabari, Sirajgonj 171 natural gas
EEE
RUET
2/4/2023 8

9. List of Power Plants
in Bangladesh (Cont.)
Gas engines
Power station Max. Capacity (MW) Engines Fuel type
Baraka Power Ltd. 51 16 natural gas
Dhaka 7 2 natural gas
Gazipur 53 6 natural gas
Gopalganj 100 16 natural gas
Maona 35 4 natural gas
Raozan 240 6 natural gas
Ghorashal Regent 108 34 natural gas
APSCL, Ashuganj 50 natural gas
Hydroelectric
Power station Max. Capacity (MW) Turbines
Karnafuli 230 5
EEE
RUET
2/4/2023 9

10. Katakhali Peaking Power Plant
Rajshahi
Date Visited: 04/04/2022
2/4/2023 10

11. Overview EEE
RUET
Katakhali power plant is a peaking power plant in Bangladesh.
The production capacity is 50 MW.
This is basically diesel engine based power plant. No turbine. Engine itself acts as
prime mover.
Have 6 units each of the engine capacity is 8.7 MW. If we are summing of all the
engines capacity, it will be 52.2 MW.
Production of Each Unit: 7.8 MW
Quick starting time: about 30 minutes
Generation Voltage: 11 KV
Fuel source: diesel and furnace oil.
Diesel is called LFO(low fuel oil) and furnace is called HFO (heavy fuel oil).
Initially started with diesel.
Then entire operation is continued with furnace oil.
Change-over valve do the function of fuel change-over.
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12. Different Sections EEE
RUET
Furnace oil: Raw oil, thick specially during winter. Need
to be heated. Auxiliary boiler uses the heat of exhaust
gas (500℃) to heat HFO. Steam tube from boiler passes
through the oil tank to heat the furnace oil.
The average difference in furnace fuel and diesel fuel
price is about 30-40%. Diesel oil is more expensive
mainly because of the wider field of application.
Auxiliary
Boiler
MAN Gensets – 18v32/40 Engine
Engine
The MAN engine 18V32/40 is a four-stroke, medium-
speed diesel engine, turbocharged and charge air-
cooled.
V-shaped engine. 18 cylinders on two sides (9 cylinders
on each side).
The engine is prepared for operation on heavy fuel oil.
Exhaust Line to
Chimney
2/4/2023 12

13. Different Sections (Cont..) EEE
RUET
Chimney: A chimney is a structure which provides
ventilation for hot flue gases or smoke from a boiler to
outside atmosphere. In Katakhali the chimney height was
50 m. So, less environmental heating issue near the
ground.
Water Pumping System: The water used is underground
water.
6 Chimney
For 6 generating units
(50 m height)
Water Pumping Room
Start Up Boiler
2/4/2023 13

14. Different Sections (Cont..) EEE
RUET
Chemical Dosing: In this room the water is treated by dosing
Ammonia and Phosphate to prevent boiler corrosion.
Engine Cooling and Warm-Up: The engine is water cooled.
Before starting the engine, it is warm up to prevent thermal
shock, by circulating lubrication oil. Lubrication oil
temperature should be minimum 50℃.
Air Sucker: Removes moisture and dust particle from air. Air Sucker and Filtration
Chemical Dosing
Water Cooling System
Salt Mixed Water basin
to remove iron (3 m height)
2/4/2023 14

15. Different Sections (Cont..) EEE
RUET
HFO Storage (50 lakh liter each)
Total 1 crore liter oil can be stored
Day Tank
(10 lakh liter)
Oil Requirement: If the plant runs for 10
hours in a day at full load the HFO required
is 120000 liter.
Oil Storage: This huge quantity of furnace oil
need to be stored in a large storage. The oil
then supplied to the day tank, after
purification in the oil purification unit,
which is required daily or for a short
interval. Also there are storage for diesel
and lubricating oil. There are totally nine
storage tanks in this power plant. Two of
them are primary storage tank and seven of
them are secondary storage tank.
2/4/2023 15

16. EEE
RUET
Compressed Air System
Separator
Oil Pump
Separator: On the way from storage tank
the HFO is passed through the separator
to separate moisture and suspended
impurities from oil. Then the oil is
delivered to the day tank.
The pumping of oil from storage tank to
day tank is done by oil pump.
No purification needed for diesel.
Compressed Air System: In this system, there are arrangement
for both instrument air and starting air.
Air is compressed
Moisture level in air is monitored
Anti moisture arrangement removes moisture, make it dry and
feed to engine.
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17. Generator EEE
RUET
Generator
Number of generator 6
Generator apparent
power
11,155 KVA
Rated power factor 0.8
Nominal voltage 11 kv
Rated current 585 A
Voltage adjustment range ±5 %
Frequency 50 Hz
Speed & Poles 750 rpm & 8 Poles
Over speed 900 rpm
Cooling metdod Air
Generator Rating
Engine
2/4/2023 17

18. Different Units EEE
RUET
Fig: Neutral Grounding Resistor Fig: View of 6 Units
6
6
2/4/2023 18

19. Substation EEE
RUET
Fig: Single Line Diagram of Katakhali Power Plant
2/4/2023 19

20. Substation (Cont..) EEE
RUET
Spare
3 single phase transformer bank Conservator
tank
CT
∆ − 𝒀
11/132 KV
2/4/2023 20

21. Substation (Cont..) EEE
RUET
SF6 Circuit Breaker
Isolator PT
Lightning Arrester
2/4/2023 21

22. Control Room EEE
RUET
 The control room controls the
power plant digitally.
 The power plant can also be
controlled manually.
 The control room of the relays,
circuit breaker and the generation
condition of the power plant is
monitored by the control room all
time.
 In this power plant, the control
room updates their generating
voltage every 15 minutes.
2/4/2023 22

23. Barapukuria Power Station is located near Durgapur, Dinajpur, Bangladesh.
It is the 1st coal-fired power plant in Bangladesh founded in 2006 and it is operated by the Bangladesh Power
Development Board (BPDB).
Barapukuriya Coal Fired Power plant

24. Plant Type: Thermal coal-fired
Location: Phulbari and Parbatipur Upazilas, Dinajpur district, Rangpur Division, Bangladesh
Capacity: 525 MW with 3 Units ( 2 x 125 and 275)
Coal Type: Bituminous Coal (Unpurified)
Finance: 224 million US$ in debt from ICBC (Industrial and Commercial Bank of China); 106.52 million
US$ in equity from the Government of Bangladesh.
Parent company: Bangladesh Power Development Board (BPDB)
Organization Type: Public service limited
Brief specification of Barapukuriya Power plant

25. 3 Units
In the early stage two units with a capacity of 125 MW were built. Back then total capacity was 250
MW.
Later in 2018 3rd unit was built with a capacity of 275 MW.
Now it has a total 525 MW capacity.
When we visited the power station, unit two was shut down for some reason. Only unit one and
three were running.
Capacity

26. Hot Air
Coal
Pulverizer
Coal
Crusher
Magnetic
Separator Coal Mine
Boiler
Rated Power :
125 MW
Turbine
125 MW, 300
MW, 3000 rpm
Generator
3000 rpm
Coal Conveyer
Transformer
Coal Powder Steam Rotor
Coal
Conveyer
TO NATIONAL GRID
13.8 KV (Unit 1 & 2)/20 KV
(unit 3) to
230 KV
Unit 3:
Coal Per Unit Generation= 0.37 Kg/kwh
Rated Coal Flow: 110 T/H
Rated Max. Gross Efficiency: 38%
Auxiliary Consumption: 10%
GCV=6200 KCal/Kg
COAL CONSUMPTION (At Rated Load)
Unit#1 per day : 1200 M.Ton
Unit#2 per day : 1200 M.Ton
Unit#3 per day : 2600 M.Ton
Total for all units per day : 5000 M.Ton (Aprox.)
Coal Consumption /Kwh : 0.4 Kg (Unit#1/2) (Aprox.)
Coal Consumption/Kwh: 0.37 Kg (Unit#3)
Sub-Critical pressure: < 22.115 MPa
Temp.=538oC
Efficiency=38%~ 40%

27. 1. Power plant proper (Land)
2. Ash Ponds
3. Waste water & Raw Water Dis. channel
4. Conveyer belt and route
5. River Water/DT-wells
6. Residential areas
7. ETP (Effluent Treatment Plant)
8. Coal Storage yard
9. Ash Handling System
Salient Features

28. Boiler Proper
Drum, water wall, super heater, re-
heater, economizer, coal burner, Feed
Water heater
Boiler Auxiliary
◦FD, ID, PA, Seal Air, Scan Fan, coal mill,
air pre heater
Furnace & Metal Temperature control
in Boiler
◦Spray water system, soot blower etc.
• Boiler Start Up
procedure
•Aux. Steam Header
•Drum Level
•Scan Fan
•Air Pre heater
•Bottom ash system
•FD, ID fan
•Purging of Boiler
•PA Fan, Seal Fan
•Coal Mill
•SH & RH Spray Water
•Boiler Blowdown
Boiler

29. Steam Turbine
◦Pressure energy to mechanical energy
◦Prime Mover
◦Simple impulse turbine and Reaction Turbine
◦39 Stages
◦HP, IP, LP Turbine
◦Rotating and stationary blades
Turbine

30. 2/4/2023 30
Turbine

31. Generator

32. 2/4/2023 32
used to pre-heat water delivered to a steam generating boiler.
Feed Water Heater

33. 2/4/2023 33
Steam Turbine auxiliaries
• Lub-oil system: Pumps, L.O Filters, L.O. Coolers, L.O. Centrifuge
• Turbine Governor
• Steam Turbine Condenser
• Air Ejector
• Condensate pump
• Tray dearator
• Boiler feed pump
• Circulating water pumps

34. Other Parts:
Chimney
ESP : Electrostatic precipitators (ESP) collect dust in the flue gas produced by boiler
De-SOx Plant and De-NOx Plant : To prevent air pollution with NOx and SOx

35. EEE
RUET
Baghabari Power Station
Baghabari, Sirajgonj
Date of Visit: 09.04.2022

36. EEE
RUET
Baghabari power station is a Gas Turbine based power station having an overall capacity of 171 MW with two units:
 71 MW unit 1 (Commissioned in 1991)
Machine: PG911B
Manufacturer: France
Fuel Consumption: 0.373𝑚3
 100 MW unit 2(Commissioned in 2001)
Machine: PG 9171E
Manufacturer:
Turbine- France
Generator- India
Fuel Consumption: 0.373𝑚3
Unit
1
Unit
2
Substation type:
Swithching Substation
Generation Voltage:
11.5 KV at Unit 1
11 KV at Unit 2
Fuel:
Natural Gas

37. EEE
RUET
Principle of Operation:
 Gas turbine works on Brayton Cycle which is a thermodynamic cycle that describes the operation
of a heat engine that uses air or other gases as the working fluid.
 Gas Turbine of Baghabari Power Station is an open cycle gas turbine.
 In open cycle Gas Turbine
exhaust gases are released
to the environment instead
of being used again

38. EEE
RUET
Major Parts of a Gas Turbine Power Plant
Compressor
Combustion
chamber
Rotor
Main components of a Gas Turbine:
 Air-intake System
 Inlet Guide Vane (IGV)
 Compressor
 Combustion Chamber
 Turbine-Rotor
 Exhaust
 Support System
 Air Intake System contains Air Filter to filter out dust
particle from air
 IGV regulates air flow through compressure
 Axial flow, heavy duty Compressor consists of
17 stages
 Air mix is ignited in the combustion chamber
 Hot flue gas gets expanded through the 3 stage
turbine rotor

39. EEE
RUET
Inlet Guide Vane:
Inlet Guide Vanes (IGVs) deliver air to the inlet of the gas turbine's axial compressor
and regulates the airflow.
Adjustable inlet guide vanes can change angle from 34° to 87° according to the
requirement of generation.
Compressor:
 Takes in air from outside of the turbine and increases its
pressure.
The Axial flow compressor consists of Compressor Rotor and
Enclosing Casing.
Within the compressor casing there are 17 stages of rotor and airfoil
shaped
blades.
 Compressor runs at a speed of 3000 rpm
Air Intake System:
 Air Filter
 Air Processing Unit

40. EEE
RUET
Combustion Chamber:
The combustion system is a reverse-flow type with 14 combustion chambers arranged around the periphery of the compressor
discharge casing.
Major components of a combustion chamber:
• Fuel nozzles
• Spark plug ignition system
• Ultraviolet flame detector
• Combustion wrapper
• Combustion chamber - comb. liners
& transition piece
• Crossfire tubes
Turbine:
The MS9001E gas turbine has three-stage turbine-rotor where energy, in the form of high
temperature pressurized gas produced by the compressor & combustion sections,
is converted in to mechanical energy. Turbine rotates at 3000 rpm.
Main parts of turbine are:
• Turbine rotor which consists of two wheel shafts, three
Stages turbine wheel with buckets & two turbine spacers
• Turbine stator - consists of turbine shell and
exhaust frame.

41. EEE
RUET
Accessory Components of Gas Turbine:
 Starting Mean
 Fuel System
 Lubrication and Seal Oil System
 Hydraulic system
 Cooling Water System
 Atomizing Air System
Lubrication Oil System:
Common forced-feed lubrication type system. Lubricating fluid is
circulated to the three main turbine bearings, generator
bearings, reducing gear, accessory gear
Cooling Water System: closed system, used in dissipating
heat
Starting System:
starting mean is an induction motor operating through a torque converter
coupled to the accessory gear.
Fuel System:
 duel fuel capability
 supplied with both a natural gas & a liquid fuel (distillate) system.

42. EEE
RUET
Generator and Exciter Compartment
Exciter
This is the generator and exciter compartment inside which there is an exciter to supply direct current to
the rotor field winding. The exciter is mounted on the same shaft of the generator.
Generator

43. EEE
RUET
Journal Bearing and
Lube Oil Pipe
Internal Bearings
of Exciter
There are some bearings on the shaft. The functions are: 1. Heat Reduce , 2. Vibration Reduce , 3. Lubrication,
4. Sealing
For cooling the bearings
there is a lube oil pipe and
exhaust pipe to supply the
lube oil and extract the
vapor after cooling.

44. EEE
RUET
Control Room
Generator Control Panel Turbine control panel AVR
This is the control room of the power plant. From here we can control the plant automatically. There is
generator and turbine control panel and there is also automatic voltage regulator to control the
excitation.

45. EEE
RUET
Transformers
Unit-1 Unit-2
3 single phase transformers are used as a three phase transformer for both the units. The transformer
of unit-2 has extra fans for cooling system. There are following types of transformer protection- 1. over
current, 2. Earth Fault, 3. Differential protection, 4. Buchholz Relay. We observed the buchholz relay
external to the transformer for the protection of transformers.

46. EEE
RUET
Fig.: Single Line Diagram of Baghabari Switching Substation

47. EEE
RUET
Baghabari 11KV to 132 KV Substation
Bus
Circuit
Breaker
PT CT
Isolator
Bay
There are two buses in the substation and 8 bay. In each bay there is 3 conductors. In each bay there is 4
CT per phase. So total 96 CTs , 52 circuit breakers, 89 isolators is there.

48. Thank You
48