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Slide 1: INSTRUMENTATION & CONTROL FOR THERMAL POWER PLANT AN INTRODUCTION SHIVAJI CHOUDHURY
Slide 2: OBJECTIVE OF INSTRUMENTATION & CONTROL SAFE OPERATION OF PLANT LOWEST COST OF GENERATION LONGEST EQUIPMENT LIFE MINIMUM ENVIROMENTAL FFECTS MAXIMUM EFFICIENCY ENERGY CONSERVATION
Slide 4: OVERVIEW OF INSTRUMENTATION & CONTROL DDCMIS (DISTRIBUTED DIGITAL CONTROL & MANAGEMENT INFORMATION SYSTEM) BURNER MANAGEMENT SYSTEM TURBINE CONTROL SYSTEM GENERATOR INSTRUMENTS ANALYSERS MEASUREMENT
Slide 5: OBJECTIVE OF DDCMIS HIGH RELIABILITY . IMPROVED RESPONSE TIME EXTEND PLANT EQUIPMENT LIFETIME. IMPROVE OPERATOR INTERFACE TO PLANT IMPROVE ACCESSABILITYOF PLANT DATA TO ENGINEERING &MANAGEMENT PERSONAL HISTORICAL STORAGE AND RETRIVAL SYSTEM
Slide 6: DDCMIS MAN MACHINE INTERFACE PLANT INFORMATION SYSTEM AUTO CONTROL SYSTEM INTERLOCK & PROTECTION BURNER MANAGEMENT SYSTEM TURBINE CONTROL SYSTEM GENERATOR INSTRUMENTATION SEQUENCE OF EVENTS RECORDING SYSTEM MEASUREMENT PROGRAMMING/DOCUMENTATION
Slide 7: DDCMIS –MaxDNA ( 500 MW ) REDUNDENT CONTROLLERS-32 BIT MICROPROCESSORS INPUT ANALOG CARDS for THERMOCOUPLE, RTD, MILLI VOLTS, 4-20MA. OUTPUT ANALOG CARDS SEQUENCE OF EVENT CARD INPUT/ OUTPUT DIGITAL CARDS POWER SUPPLY MODULE ALL CONTROLLERS ARE CONNECTED WITH DATA HI WAY OPERATOR WORK STATION ( PC)
Slide 8: DDCMIS Architecture
Slide 9: Man Machine Interface CRT/TFT MONITORS (OPERATOR WORK STATION-PC) PRINTERS INDICATERS RECORDERS ANNUNCIATION SYSTEM DESK MOUNTED PB ILL PB
Slide 10: Operator workstationDisplay           ALARM MONITORING & REPORTING MIMIC/GRAPHIC DISPLAY TREND DISPLAY(X-T ) X-Y PLOT OPERATOR GUIDENCE DISPLAY SYSTEM & DIAGNOSTIC DISPLAY CONTROL BAR CHART SEQUENCE DISPLAY FAULT ANALYSIS DISPLAY
Slide 11: LOGS / SUMMARIES / REPORTS EVENT ACTIVATED LOGS - ALARM LOG, TRIP ALARM ANALYSIS LOG ,STARTUP LOG TIME ACTIVATED LOGS-SHIFT LOG,,DAILY LOG OPERATOR DEMAND LOGS-SUMMARY LOG,PERFORMANCE LOG, MAINTENANCE LOG SEQUENCE OF EVENTS LOG
Slide 12: AUTO CONTROL LOOP COORDINATED CONTROL TOTAL AIR CONTROL SUPER HEATER/ REHEATER TEMP CONTROL MILL OUT TEMP CONTROL HOTWELL LEVEL CONTROL LP/ HP HEATER LEVEL CONTROL DEARATOR LEVEL /PRESSURE CONTROL DRUM LEVEL CONTROL FURNACE DRAFT CONTROL MILL AIR FLOW CONTROL HFO/LDO PRESS /FLOW CONTROL
Slide 13: INTERLOCK & PROTECTION INTERLOCK &PROTECTION ARE USED FOR SAFE START UP / OPERATION / SHUTDOWN / TRIP OF ANY EQUIPMENT OR AUXILLARY EXAMPLES CW PUMP,ID FAN ,FD FAN,BOILER FEED PUMP,CEP, MILL ,PA FANS ,PUMPS LP / HP HEATERS AIR HEATERS REHEATER PROTECTION VALVE &DRAINS
Slide 14: BURNER MANAGEMENT SYSTEM THE SYSTEM PROVIDE INCREASED SAFTY & RELIABILITY FOR FURNANCE PROTECTION FROM IMPOLTION & EXPLOTION FURNACE PURGE SUPERVISION HIGH ENERGY ARC IGNITOR CONTROL LDO/ HFO OIL ON/ OFF CONTROL PULVERISER & FEEDER CONTROL / SUPERVISION FLAME SCANNER INTELLIGENCE
Slide 15: TURBINE CONTROL SYSTEM TURBINE GOVERNING SYSTEM TURBINE STRESS CONTROL SYSTEM HP/LP BYPASS AUTOMATIC TURBINE RUNUP SYSTEM ( ATRS) TURBINE SUPERVISORY SYSTEM
Slide 16: AUTOMATIC TURBINE RUNUP SYSTEM (ATRS) AUTOMATIC STARTUP/ SHUT DOWN SEQUENCE STRESS /TEMPRETURE MARGIN CONTROL ACCELERATION STRESS/TEMPRETURE MARGIN CONTROLLED LOADING/UNLOADING AUTOMATIC SYNCHRONISATION AND LOADING UPTO 100% MCR UNLOADING & SHUTDOWN OF MACHINE
Slide 17: TURBINE SUPERVISORY SYSTEM BEARING VIBRATION SHAFT VIBRATION DIFF EXPANTION OF ROTOR AND CYLINDER FOR HPT/IPT/LPT OVERALL EXPANTION OF HPT/IPT AXIAL SHIFT OF ROTOR TURBINE SPEED EMERGENCY STOP & CONTRL VALVE POSITION BEARING TEMPRETURE OF TUBINE
Slide 18: DDCMIS CONTROLLER GROUPING DETAILS-BOILER(500MW) MASTER FUEL TRIP. OIL PA FANS COAL MILL (A TO K) SADC & APRDS SOOT BLOWING CONTROL. HP BY PASS
Slide 19: DDCMIS CONTROLLER GOUPING DETAILS-TURBINE(500 MW) TUBINE PROTECTION A & B AUTO TURBINE TESTER ELECTRO HYDROLUIC TURBINE CONTRL TURBINE STRESS CONTROLLER LPBYPASS GENERATOR ATRS TURBINE DRIVEN BFP
Slide 20: DDCMIS CONTROLLER GROUPING DETAILS-STATION (500MW) ALL AUTO CONTROL SYSTEM(CLCS) INTERLOCK & PROTECTION(OLCS) ELECTRICAL BREAKERS
Slide 21: DDCMIS - PERFORMANCE CALCULATION BOILER EFFICIANCY STEAM TURBINE HP/IP/LP TUBINE AIR PREHEATER FEED WATER HEATERS DEAERATOR CONDENSER UNIT HEAT RATE
Slide 22: FLUE GAS ANALYSERS WE MEASURE OXYGEN,CARBON MONO OXIDE IN FLUE GASES FOR PROPER & OPTIMISATION OF COMBUSTION OF FUELS IN BOILER. WE MEASURE SULPHER DI OXIDE, NITROGEN OXIDES,DUST DENSITY IN FLUE GASES TO MINIMISE THE ENVIROMENTAL EFFECTS.
Slide 23: STEAM & WATER ANALYSER CONDUCTIVITY , pH , SILICA , DISOLVED OXYGEN ETC ARE MEASURED TO ENSURE QUALTY OF D M WATER TO BOILER TO PREVENT COROSSION TO REMOVE IMPURITIES TO PREVENT SCALE DEPOSIT IN THE BOILER TUBE TO PREVENT SILICA DEPOSIT ON THE BLADES OF TUBINE
Slide 24: MEASUREMENT TEMPRETURE FLOW PRESSURE LEVEL
Slide 25: AIM DO IT RIGHT FIRST TIME