2 Major Component of Ddcmis

7/31/2019 2 Major Component of Ddcmis

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24 May 2012 PMI Revision 00 1

(DIGITAL DISTRIBUTEDCONTROLS AND

MANAMAGEMENTINFORMATIONSYSTEMS)

IN POWER PLANT


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INTEGRATED PLANT OPERATION THROUGH FULLYINTERCHANGEABLE OPERTAOR WORK STATIONS(OWS) FOR SG, TG AND BALANCE OF PLANT

(SOMETIMES THIS MAY NOT BE POSSIBLE DUE TOPACKAGING CONCEPT)


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PROVISION OF EXTENSIVE SELF-DIAGNOSTICS

USE OF LARGE VIDEO SCREENS FOR

PROJECTIONS OF VARIOUS PLANT MIMICSETC.

PROVISION OF FAULT ALARM ANALYSIS TOGUIDE THE OPERATOR TO THE MOST LIKELYEVENT

PROVISION OF TREND ALARMS


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PROVISION OF SAFETY HARDWARE FORBURNER MANAGEMENT SYSTEMS

PROVISION OF FAIL-SAFE HARDWARE FOR

TURBINE PROTECTION SYSTEM

PROVISION OF ADEQUATE RELIABILITY ANDAVAILABILITY WITH PROPER REDUNDANCY IN

SENSOR, I/O AND CONTROLLER.


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HMIREDUNDANT

SERVERS

Redundant

F.G.Controllers

ENGG.STN.

FOR CONTROL SYS.

HMIENGG. STN

FOR HMI

PROCONTROL

SYSTEM

Measurement system / I/O

subsystem

I.P. BUS Max. 4nos. rdundant

maxDNA

SYSTEM

MMI LAN


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CONTROL SYSTEM

MAN-MACHINE INFORMATION AND PLANT

INFORMATION SYSTEM (MMIPIS)

REDUNDANT DATA COMMUNICATION SYSTEM

(DCS)


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CONTROL SYSTEM

PROGRAMMING & MMIPIS M & S

CONFIGURATION SYSTEM CLOCK

SG- C&I BOP- C&I TG- C&I

SYSTEM SYSTEM SYSTEM

DCS


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SG-C&I SYSTEM

CONSISTS OF BURNER MANAGEMENTSYSTEM(BMS), SOOT BLOWER CONTROLSYSTEM (SBC), SECONDARY AIR DAMPER

CONTROL SYSTEM (SADC), AUXILIARY PRDSCONTROLS (APRDS)

FOR BMS, SAFETY SYSTEM HARDWARE IS

SPECIFIED, i.e. THE HARDWARE , WHICHMEETS THE REQUIREMENT OF RELEVANTNFPA AND VDE STANDARDS`


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SG-C&I SYSTEM

TRIPLE REDUNDANT CONFIGURATION FOR THEFURNACE PROTECTION (MFT) PORTION OF BURNERMANAGEMENT SYSTEM(BMS)

FOR SBC,SADC,APRDS,MILL & OIL ELEV.SEQUENCE, INTERLOCK AND PROTECTION,CONFIGURATION SIMILAR TO OLCS/CLCS(DESCRIBED LATER)

FOR MILL & OIL ELEV. LOGICS, SAFETY SYSTEMHARDWARE SHALL BE USED


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TG-C&I SYSTEM

CONSISTS OF TURBINE PROTECTION SYSTEM(TPS), AUTOMATIC TURBINE RUN-UP SYSTEM(ATRS), AUTOMATIC TURBINE TESTING

SYSTEM(ATT), ELECTRO- HYDRAULIC TURBINECONTROL SYSTEM (EHTC) FORMAIN & BFPTURBINE, TURBINE STRESS CONTROL SYSTEM(TSCS), GLAND STEAM PRESSURE CONTROL

GENERATOR SEAL OIL, PRIMARY WATER &HYDROGEN CONTROL SYSTEM (RECENTADDITION).


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TG-C&I SYSTEM

TRIPLE REDUNDANT OR 2 X 100 % REPEATEDTWICE CONFIGURATION FOR THE TURBINEPROTECTION SYSTEM(TPS). FOR THIS,SAFETY SYSTEM HARDWARE / FAIL-SAFEHARDWARE SHALL BE USED

FOR OTHERS, CONFIGURATION SIMILAR TO

OLCS/CLCS (DESCRIBED LATER) TO BE USED


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BOP-C&I SYSTEM

CONSISTS OF OPEN LOOP CONTROL SYSTEM(OLCS) AND CLOSED LOOP CONTROL SYSTEM(CLCS)

OLCS -THE SEQUENCE CONTROL, INTERLOCK OF OFALL THE PLANT SYSTEMS WHICH ARE NOT COVEREDIN THE SG-C&I AND TG-C&I. THIS INCLUDES MAJORAUXILIARIES LIKE FD/ID/PA FANS, AIR-PREHEATER,

BFP/CEP/CWP/ BCWP , DMCWP/CLCWP ANDELECTRICAL BREAKERS.


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BOP-C&I SYSTEM

(CLCS) -THE MODULATING CONTROL FOR VARIOUS

IMPORTANT PLANT PARAMETERS, LIKE FW FLOW

(DRUM LEVEL), FURNACE DRAFT, COMBUSTION

CONTROL (FUEL FLOW AND AIR FLOW), PA HDR

PRESSURE CONTROL,

DEAERATOR/HOTWELL/HEATER LEVEL CONTROLS

ETC.


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MAN-MACHINE INTERFACE AND

PLANT INFORMATION SYSTEM LATEST STATE-OF-THE-ART WORKSTATIONS /PCs AND

SERVERS BASED ON OPEN-ARCHITECTURE ANDINDUSTRY STANDARD HARDWARE AND SOFTWARE TO

ENSURE BETTER CONNECTIVITY.

e.g. HARDWARE FROM COMPAQ/DIGITAL, HP, SUNMICRO-SYSTEM OR OTHER MAJOR SUPPLIERS (LESSDEPENDENCE ON THE C&I SYSTEM SUPPLIER IN THE

LONG RUN) OPERATING SYSTEM WINDOWS-2000, OPEN-VMS OR

UNIX.


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MAN-MACHINE INTERFACE AND

PLANT INFORMATION SYSTEM 64/ 32-BIT SERVER/OWS WITH HIGH-SPEED ANDLARGE MEMORY (256/512 MB RAM, 8 GB HDD FORSERVER AND 128/256 MB RAM AND 4/6 GB HDD FOROWS) TO ENSURE FAST RESPONSE

PROVISION OF LVS

CONNECTION TO OTHER SYSTEM THROUGHSTATIONWIDE WAN


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VPC OPERATION

OTHER OPERATOR INFORMATIONS THROUGHVARIOUS DISPLAYS

ALARMS, LOGS, HISTORICAL AND LONG TERMSTORAGE.

PERFORMANCE AND OTHER CALCULATIONS


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Software

Driver

Software

Driver

Software

Driver

Software

Driver

OPC OPC OPC OPC

Display

Application

Trend

Application

Report

Application

OPC OPC OPC

OPC Solves the Problem


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SEQUENCE OF EVENT (SOE ) AND ANNUNCIATION

SYSTEMFUNCTIONS

ORIGINALLY THESE USED TO BE STAND-ALONESYSTEM (DIODE AUCTIONEERING, DBTC ETC

REQUIRED) NOW INTEGRATED -THEREFORE THE DIODE

AUCTIONEERING, DBTC ETC NOT REQUIRED

SOE - 1mS RESOLUTION, STORAGE OF REPOTRS FOR

LONG DURATION ANNUNCIATION LOGIC THROUGH OLCS/CLCS

CONTROLLERS.


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SYSTEM

PROGRAMMINGFACILITY


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Graphical object-orientedconfiguration software tool

Includes self-documentation

of configuration True object-orientedfeatures includingencapsulation and

inheritance Library of standard

algorithms or objects

C

Object-Oriented Configuration


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MASTER & SLAVECLOCK SYSTEM


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MASTER & SLAVE CLOCK SYSTEM

RECEIVES TIME SYNCHRONISATIONSIGNALS EITHER FROM THE GEO-

POSITIONARY SATELITE (NPL SIGNAL)

DISTRIBUTES THIS SIGNAL TO THE MMIPIS

AND THE CONTROL SYSTEM.


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POWER SUPPLY SYSTEM

CABLING & TERMINATION OTHER

SG/TG C&I SYSTEM/ EQUIPMENT

PACKAGING CONCEPTS- SCOPE OF

SUPPLY OF C&I SYSTEM/PACKAGE


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OPERATION PHILOSOPHY , CONTROLAREA AND BACK-UPINSTRUMENTATION & GEOGRAPHICALDISTRIBUTION - COMBINED CYCLEPLANTS

REDUNDANCY

DESIGN CRITERIA


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CONTROL SYSTEM POWER SUPPLY TWO SETS OF DC POWERSUPPLIES - ONE SET FOR SG/TG-C&I AND OTHER FOR BOP-C&IEACH WITH 2 X 100 % CHARGER AND 2 X 100 % BATTERY.

OTHER IMPORTANT AC LOADS LIKE MMIPIS, PANELINSTRUMENTS, ANALYSERS ETC. SHALL BE POWERED FROM

UPS COMPRISING OF 2 X 100 % CHARGER, 2 X 100 %INVERTER AND 1 X 100 % BATTERY.

HEAVY DUTY Ni-Cd BATTERIES HAVE BEEN ENVISAGED FORLONGER LIFE & LESSER MAINTENANCE


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EXTENSIVE GROUPING OF SIGNALS BY LARGE

SCALE USE OF JBs AT STRATEGIC LOCATIONS

USE OF CABLES WITH HIGHER NO OF PAIRS

USE OF CAGE-CLAMP CONNECTION FOR SYSTEM

CABINETS, MARSHALLING PANELS & OUTGOING

SIDE OF JBs, CJS BOXES etc.

USE OF PLUG-IN SOCKET AND CONNECTORS FOR

TRANSMITTERS, SWITCHES, LS/TS etc.


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FLAME MONITORING SYSTEM

COAL FEEDER C&I

ELECTROMATIC SAFETY VALVES

FURNACE TEMP PROBES

ACCOUSTIC PYROMETER FOR FURNACE TEMP PROFILE BOILER FLAME ANALYSIS SYSTEM

COAL BUNKER LEVEL MONITORING SYSTEM

ELECTRONIC DRUM/SEPARATOR LEVEL MONITORING SYSTEM

TURBINE SUPERVISORY SYSTEM

TDBFP TURBINE SUPERVISORY SYSTEM

IN PACKAGED SYSTEM, THESE ARE UNDER SG & TG PACKAGES.


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CENTRALISED OPERATION OF MAIN PLANT THROUGH OWS & LVS

OFF-SITE PLANTS TO BE CONTROLLED FROM THEIR LOCALSTATIONS WITH STATION-WIDE LAN DATA LINK

MINIMUM BACKUP INSTRUMENTATION (ORIGINALLY

CONSERVATIVE, NOW REDUCED. CRITERIA - HANDLINGEMERGENCY & SAFE SHUT-DOWN)

GEOGRAPHICAL DISTRIBUTION - ALTHOUGH NOT VERY USEFULFOR POWER PLANTS AS COMPARED TO PROCESS/INDUSTRIES,BEING ADOPTED FOR FEW AREAS WHERE SIGNALS ARECONCENTRATED (REDUCTION OF CABLING, MUCH LESSERECTION & COMMISSIONING TIME)


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PROVENNESS

SUPPLIERS EXPERIENCE

SYSTEM EXPERIENCE

PROVENNESS VS OBSOLESCENCE

RELIABILITY AVAILABILITY

HARDWARE QUALITY (PUBLISHED MTBF etc.)

CONFIGURATION

REDUNDANCY

FAULT TOLERANCE

STANDARDISATION AND UNIFORMITY OF H/W

SAME SERIES & FAMILY OF H/W AS FAR AS POSSIBLE

DIFFICULTIES BECAUSE OF PACKAGING CONCEPTS &RESPOSIBILITY CENTRE & INTERFACES (EVEN IN TURNKEYPACKAGE)


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OPERABILITY DESIGN CONCEPT - FAIL SAFE ETC. FALSE TRIP VS SAFETY OPERATOR CONVENIENCE DURING NORMAL RUNNING &

EMERGENCY MANAGEMENT REPORTING

MAINTAINBILITY STANDARDISATION (AS INDICATED ABOVE) MODULAR DESIGN AND EXPANDABILITY DIAGNOSTIC, FAULT IDENTIFICATION AND FAULT TOLERANCE GUARD AGAINST OBSOLESCENCE AVAILABILTY OF SPARES

OTHER CRITERIA UNIT OPERATION PHILOSOPHY MARKET TRENDS AND EVOLUTION OF INFORMATION

TECHNOLOGY FEEDBACKS FROM EXISTING SYSTEMS


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2 Major Component of Ddcmis