dr. t.r.rangaswamy professor/eee
TRANSCRIPT
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Dr. T.R.Rangaswamy Professor/EEE
BEE045 INSTRUMENTATION AND CONTROL IN POWER PLANT INDUSTRIES
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CONDENSER
D/A HPH
LPH
G TUR B O I L E R
F/P
C/P
THERMAL POWER PLANT
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SCHEMATIC DIAGRAM
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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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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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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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S.HEATER
R.H.
I.P L.P
condenser
H.P
STEAM SYSTEM
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BOILER CONTROLS
• Drum Level Control
• Combustion Control
• Furnace Draft Control
• Super Heater Temperature Control
• Reheater Temperature Control
• Feed Water Systems Control 11
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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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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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B O I L E R
FUEL
AIR
WATER
TURBINE
GENERATOR
STEAM
INPUT/OUTPUT
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GEN TURBINE
B O I L E R
GENERATION CONTROL
DEMAND CONTROL
FUEL CONTROL
AIR CONTROL
CONTROL&DEMAND SIGNAL
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FUEL
AIR
COMBUSTION CONTROL
DRUM
G T STEAM
O2
O2 TRIM
THROTTLE PRESSURE CONTROLLER
HEAT RATE CALCULATION
LOAD CONTROLLER
WATER
FLUE GAS
BOILER
Legends
T-Turbine G-Generator O2-Oxygen
Block diagram for combustion control of boiler
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CONTROLLERS • PID Based Controller
• Feed forward Controller
• Feedback Controller
• Feed forward - Feedback Controller
• Cascade Controller
• Split-Range Controller
• Ratio Controller
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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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INTELLIGENT CONTROLLERS
NEURAL NETWORK
FUZZY CONTROLLERS
NEURO-FUZZY CONTROLLERS
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CONTROL ROOM
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