1. Presentation
On
Guru Gobind Singh Super Thermal Plant
Roopnagar
Submitted By:
Atul Kataria

2. INRTRODUCTION
• Guru Gobind Singh Super Thermal Plant is situated at a site
adjacent to Nangal Hydel Channel near Ghanauli which is 12
km from Roopnagar ;55km from Chandigarh.

4. Features of Plant
• No of Units- 6
• Each Unit Capacity- 210MW
• Total generating capacity -1260MW
• Source of water supply- From Nangal Hydel channel
• Fuel used- Coal from Bihar, West Bengal and Madhya
Pradesh
• Turbines- 210MW, German made KWU type ,3000
rpm
• Generators- 247MVA,50Hz
• Total energy generation annually- 6942MUs

5. Working of Plant
• Thermal power station burns pulvarised coal in boiler to
generate steam.
• The generated steam is super heated to 540°C to run turbine.
• Turbine is coupled with generator to generate 210MW at
15.75KV. This voltage is maintained constant with DVR
(Digital Voltage Regulator).
• The generated voltage is step-up to 220KV by transformer
for onward transmission.

8. BOILER
The Boiler part of the plant can be subdivided into 3 main parts:
• Fans
 PA(Primary Air Fan)
FD(Forced Draft Fan)
ID(Induced Draft Fan)
• Mills
• Furnace

9. WINDING JB
BEARRINGS/RTDs
Coal Mill grinds/pulverizes the coal for feeding into the BURNER
GRINDED COAL FED TO
FURNACE THROUGH
PIPES
COAL BUNKER
HEATED
PRIMARY AIR
FROM PA FAN
MOTOR
GEAR OIL
WORM SHAFT
VERTICAL SHAFT
COUPLING
BOWL
GRINDING ROLL
RC FEEDER
FURNACE
Various components of coal Mills

10. DISTRIBUTED PROCESSING UNIT(DPU)
FEATURES:
•Comprehensive alarming and
calculations.
• Logging of Sequence of Events (SOE)
data.
• Acquisition of trend information.
•Continuous scanning of Model IOP I/O
modules.
•Execution of predefined Control and
Data.
•Blocks for process control and data
acquisition.
•Provides on-line graphic monitoring of
control and ladder execution.
•Assurance of secure link-level data
highway communications.

11. Ovation OCR 400
Features
1. Flash memory 128 Mb
2. Total point capacity 3200 points
3. 400 Mhz celeron processor
4. Serial and parallel IO scanning options
5. 64 Mb DRAM memory
The controller executes modulating and sequential control strategy and
supports the following functions.
1. Originates and receives process points.
2. Adds, deletes and modifies points on – line.
3. Provides alarming and command word processing for originated points.
4. Reads I/O modules and converts data to process points.
5. Reads process points and writes data to I/O modules.
6. Executes control algorithms.

12. CONTROLLER
POWER
ETHERNET
PORTS
POWER
COMMUNICATIONS
CONTROL
NODE
LEDS
ALIVE
ERROR

13. Processor Module Status
LED Meaning On Off Blinking
P Power Lights green
when module is
powered
Unlit when
module is not
powered
NA
N Ethernet port Port is receiving
power
Port is not
receiving power
Module is
linked to the
network port
Cm Comm. Communication
hung
No commands
being received
Commands
being received
Ct Control Controller
acting as
primary
Cleared Controller
acting as
secondary
A Alive Alive under
hardware
Alive timer
timed out
NA
E Error Performing
diagnostics
No errors Error indication

14. •QAI card: It contains 4 ADC’s and a digital
multiplexed interface to the DIOB of a process
control system. It takes the analog input signal of
data inputs like starting of the machine, resetting
and changing control etc.
•QBO card : The QBO card receives DIOB signals
and provides up to 48 V DC, 300mA field level
signals for relay coils , stepping motors , lamps
etc. It provides an 8 bit memory function.
•QRT card: It converts an analog field signal to
digital data. The digital data is summation of a
frequency counted for a time period. It is
basically a Q line RTD input amplifier.
Types of Q-Line Cards

15. 15
MOTOR
WINDING
TEMP HIGH
MOTOR/MILL
BEARING
TEMP HIGH
COAL MILL
TRIP
Prepared Logic
Diagram
Digital output card
Relay
Alarm
Logic Circuit prepared to Generate potential free contact
to provide Alarm/Tripping to Coal Mill

16. 16
I/P Positionor
ALR
Main Air
Filter
Regulator
5.8 kg
I/P
Convertor
Control
Air Filter
Regulator
1.4 kg
Positioner
Air Lock
Relay
INPUT
4 to 20 ma
0.2 t0 1.0 kg
OUTPUT
Signal
Output
card
AIR SUPPLY
Power
Cylinder
Working of Power cylinder

17. ATRS (Automatic Turbine Run Up
System)
Two types of controller
• Electro hydraulic controller
• Hydraulic controller
• Electro hydraulic controller: Purpose of this system is to
govern all the control, which can be done in 2 ways
• Speed : It govern the system till the time of
synchronization or we can say when our machine
attains the speed of 3000 rpm.
• Load : After synchronization all of the control comes to
the load system and it is varied around 207 to 212 volt.

18. Turbine Oiling System
Main components
Main Oil Pump
Auxiliary Oil Pump
Emergency Oil Pump
Jacking Oil Pump

19. Instruments Used in Plant
• Resistor Temperature
Detector(RTD)
A Resistance Thermometer or
Resistance Temperature Detector is a
device which used to determine the
temperature by measuring the
resistance of pure electrical wire. This
wire is referred to as a temperature
sensor. If we want to measure
temperature with high accuracy, RTD is
the only one solution in industries. It has
good linear characteristics over a wide
range of temperature.

20. •Temperature gauge: It
gives us the reading of the
furnace. It has two set
points namely alarm and
trip point. When the
temperature of furnace
reaches the first set point
the alarms will trigger and
we can manually take an
action but if it further
reaches to the trip point ,
our machine will
automatically tripped .

21. Pollution Control System
In order to ensure that NTPC comply with all the stipulated
environment norms, various pollution control systems have been
installed to control air and water pollution
1.Electrostatic Precipitators :The ash left after the combustion
of coal is rested in high efficiency ESP and particular emission
is control well within the stipulated norms. The ash collected in
the ESP’s are used by cement factories and some ash is
disposed to ash ponds in slurry form.

22. 2. Flue gas stacks :Tall flue gas stacks have been provided for
wide dispersion of the gaseous emissions(SOX,NOX etc.) into
the atmosphere
3. Neutralization pits :These have been provided in the water
treatment plant for pH correction of the effluent gases before
discharge into effluent treatment plants for further treatment
and use.
4. Cooling towers :They have been provided for cooling the hot
condenser cooling water in closed cycle Condenser Cooling
Water System.This helps in reduction in thermal pollution and
conservation of fresh water.
5. Ash water recycling system : In the AWRS effluent from the
ash pond is circulated back to the station for further ash
sluicing to the ash pond. This helps in saving of fresh water
requirements for transportation of ash from the plant.