EEE- BEE045 -Thermal Power Plant- Dr. T.R. Rangaswamy.pdf

thermal power plant

1. Dr. T.R.Rangaswamy
Professor/EEE
BEE045 INSTRUMENTATION AND CONTROL IN
POWER PLANT INDUSTRIES

2. CONDENSER
D/A
HPH
LPH
G TUR
B
O
I
L
E
R
F/P
C/P
THERMAL POWER PLANT
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3. SCHEMATIC DIAGRAM

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4. BIHER EEE
COMPONENTS OF THERMAL POWER PLANT
Boiler
Turbine
Generator
Demineralization
Plant
Ash handling
Fuel Handling
Sea Water Intake
Cooling Water System
Instrument Air System
Service Air System
Potable Water System
HV/LV Electrical System
Uninterrupted Power Supply
DCS Network
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5. Thermal power plant consists of the
following four main circuits :

(a) Feed water and steam flow circuit.

(b) Coal and ash circuit.
(c) Air and gas circuit.

(d) Cooling water circuit.
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6. WATER SYSTEM
D.M.
PLANT
ECONOMIZER
B
O
I
L
E
R
C
O
N
D
E
N
S
E
R
HOT WATER
COOL WATER
B.F.P
STEAM
COOLING
TOWER
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7. S.HEATER
R.H.
I.P
L.P
condenser
H.P
STEAM SYSTEM
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11. BIHER EEE
BOILER CONTROLS

•Drum Level Control

•Combustion Control

•Furnace Draft Control

•Super Heater Temperature Control

•Reheater Temperature Control

•Feed Water Systems Control

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12. BIHER EEE
TURBINE CONTROLS.

•Speed Governor
•Load Governor
•Pressure Governor
•Gland seal steam header pressure control
•Condenser hot well level control
•LP Heater level control
•HP Heater level control
•Deaerator level control
•Speed control
•Fast runback control
•Lube oil pressure control

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13. BIHER EEE
GENERATOR CONTROLS

•MW control
•Runback control
•Capability of the Generator
•Variation of terminal voltage
•Frequency variation
•Temperature of the coolants
•Over loading
•Stator winding temperature

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14. B
O
I
L
E
R
FUEL
AIR
WATER
TURBINE
GENERATOR
STEAM
INPUT/OUTPUT
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15. GEN TURBINE
B
O
I
L
E
R
GENERATION
CONTROL
DEMAND CONTROL
FUEL
CONTROL
AIR
CONTROL
CONTROL&DEMAND SIGNAL
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16. FUEL
AIR
COMBUSTION
CONTROL
DRUM
G
T STEAM
O
2
O
2 TRIM
THROTTLE PRESSURE
CONTROLLER
HEAT RATE CALCULATION
LOAD CONTROLLER
WATER
FLUE GAS
BOILER
Legends

T-Turbine
G-Generator
O
2-Oxygen
Block diagram for combustion
control of boiler
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17. BIHER EEE
CONTROLLERS
• PID Based Controller

• Feed forward Controller

• Feedback Controller

• Feed forward - Feedback Controller

• Cascade Controller

• Split-Range Controller

• Ratio Controller

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18. BIHER EEE
ADVANCED CONTROLLERS
• Adaptive Controller
• Scheduled Adaptive Controller
• Self-adaptive Controller
• Model-Reference Adaptive Controller
• Gain Scheduled Controller
• Predictive controllers
• Intelligent controllers

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19. BIHER EEE



INTELLIGENT CONTROLLERS

NEURAL NETWORK

FUZZY CONTROLLERS

NEURO-FUZZY CONTROLLERS

EXPERT CONTROLLERS


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20. BIHER EEE
CONTROL ROOM
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