ddcmis lecture

7/31/2019 Ddcmis Lecture

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24 May 2012 PMI Revision 00 2




• INTEGRATED PLANT CONTROL SYSTEM FORSG, TG AND BALANCE OF PLANT.

• INTEGRATED PLANT OPERATION THROUGH

FULLY INTERCHANGEABLE OPERTAOR WORKSTATIONS (OWS) FOR SG, TG AND BALANCEOF PLANT

• IT MAY BE REMEMBERED THAT THE TERM

DDCMIS USED TO BE REFERRED FOR THESO-CALLED “BOP - C&I” , THE “SG-C&I”, i.e.FSSS, BOILER PROTECTION AND “TG-C&I” i.e.ATRS, TURBINE PROTECTION etc.




maxDNA

SYSTEM

HMI

REDUNDANT

SERVERS

RedundantF.G.Controllers

ENGG.STN.

FOR CONTROL SYS.

HMIENGG. STN

FOR HMI

PROCONTROL

SYSTEM

Measurement system / I/O

subsystem

I.P. BUS Max. 4nos. rdundant

MMI LAN




• CONTROL SYSTEM

• MAN-MACHINE INFORMATION AND PLANT

INFORMATION SYSTEM (MMIPIS)

• REDUNDANT DATA COMMUNICATION SYSTEM(DCS).

• MASTER & SLAVE CLOCK SYSTEM.




• SEQUENCE OF EVENT (SOE ) ANDANNUNCIATION SYSTEM FUNCTIONS.

• SYSTEM PROGRAMMING FACILITY:-

a) TUNING & CONFIGURATION FOR

CONTROL SYSTEM.

b) MODIFICATION & PROGRAMDEVELOPMENT FOR MMIPIS.




PROCONTROL P13/42 CONTAINS A BUSSYSTEM:-

• P-42 REPRESENTS INTRA PLANT BUS, IS

RESPONSIBLE FOR SIGANL TRANSPORT.

• P-13 REPRESENTS LOCAL BUS, ISRESPONSIBLE FOR SIGANL CONVERSION AND

SIGNAL PROCESSING.




CONTROL SYSTEM

PROGRAMMING & MMIPIS M & S

CONFIGURATION SYSTEM CLOCK

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

SYSTEM SYSTEM SYSTEM

DCS




SG-C&I SYSTEM

SG-C&I SYSTEM CONSISTS OF :

1. BURNER MANAGEMENT SYSTEM (BMS).

2. SOOT BLOWER CONTROL SYSTEM (SBC).

3. SECONDARY AIR DAMPER CONTROL SYSTEM(SADC).

4. AUXILIARY PRDS CONTROL SYSTEM (APRDS).




TG-C&I SYSTEM FEATURES

• TRIPLE REDUNDANT OR 2 X 100 % REPEATEDTWICE CONFIGURATION FOR THE TURBINE

PROTECTION SYSTEM (TPS). FOR THIS,SAFETY SYSTEM HARDWARE OR FAIL-SAFEHARDWARE SHALL BE USED.

• FOR OTHERS, CONFIGURATION SIMILAR TO

OLCS/CLCS TO BE USED.




BOP-C&I SYSTEM

BOP-C&I SYSTEM CONSISTS OF :

1. OPEN LOOP CONTROL SYSTEM (OLCS).

2. CLOSED LOOP CONTROL SYSTEM (CLCS).

OLCS INCLUDES THE SEQUENCE CONTROL ANDTHE INTERLOCK OF ALL THE PLANT SYSTEMS

WHICH ARE NOT COVERED IN SG-C&I AND TG-C&I.THIS INCLUDES MAJOR AUXILIARIES LIKE FD/ID/PAFANS, AIR-PREHEATER, BFP/CEP/CWP/ BCWP/ DMCWP/CLCWP AND ELECTRICAL BREAKERS.




MAN-MACHINE INTERFACE AND

PLANT INFORMATION SYSTEM• LATEST STATE-OF-THE-ART WORKSTATIONS

/PCs AND SERVERS BASED ON OPEN-

ARCHITECTURE AND INDUSTRY STANDARDHARDWARE AND SOFTWARE TO ENSUREBETTER CONNECTIVITY.

• HARDWARE FROM COMPAQ/DIGITAL, HP, SUN

MICRO-SYSTEM OR OTHER MAJOR SUPPLIERS• OPERATING SYSTEM WINDOWS-2000, OPEN-

VMS OR UNIX.




MAN-MACHINE INTERFACE AND

PLANT INFORMATION SYSTEM• 64/ 32-BIT SERVER/OWS WITH HIGH-SPEED AND

LARGE 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 (LARGE VIDEO SCREEN).

• CONNECTION TO OTHER SYSTEM THROUGHSTATIONWIDE WAN.




• VPC OPERATION

• OTHER OPERATOR INFORMATIONS THROUGHVARIOUS DISPLAYS

• ALARMS, LOGS, HISTORICAL AND LONG TERMSTORAGE.

• PERFORMANCE AND OTHER CALCULATIONS




SEQUENCE OF EVENT (SOE )

AND ANNUNCIATION SYSTEM FUNCTIONS

• 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 REPOTS

FOR LONG DURATION• ANNUNCIATION LOGIC THROUGH OLCS/CLCS

CONTROLLERS.




• Event Activated logs

– SOE

– Post Trip Log

– Start-Up Log

• Time Activated Logs

– Daily Log

– Shift Log

• Maintenance Data Log

• On Demand Logs




• Displays all the alarms in the order of theiroccurrence

– Useful for analysing the cause of the major

failures. – All digital DATA and Analog values crossing the

limits will be displayed in this window in the orderof their occurrence.




REAL TIME TREND

• Operator can configure the required points for realtime trending purpose and can see the real time

trend and in case of any deviation (abnormalchange) can react quickly.

OPERATOR GUIDANCE MESSAGES

• Operator Guidance messages can be displayed onthe DAS monitors when rolling or any importantactivity is going on.




• CPU

• I/O CARDS

• CRTS

• PRINTERS

• NETWORK



* Di it l I t M d l




* Digital Input Module

Process 16 Digital Inputs




* Analog Output Module

4 Outputs

Outputs are short circuit protected

Scan time 8 millisecond

Resolution 12 Bit




* Digital Output Module

16 Outputs are available

Contact Rating

5 A 240 V AC

3 A 30 V DC

0.3 A 110 V DC




SYSTEM

PROGRAMMINGFACILITY




SYSTEM PROGRAMMING FACILITY

• LATEST TREND - COMBINED CONTROL

SYSTEM TUNING & MMIPIS PROGRAMMING

• SELF-DOCUMENTATION

• ENGINEERING WORKSTATIONS




• 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




• POWER SUPPLY SYSTEM

• CABLING & TERMINATION OF SG/TG C&I SYSTEM/

EQUIPMENT.

• OPERATION PHILOSOPHY , CONTROL AREA AND

BACK-UP INSTRUMENTATION & GEOGRAPHICAL

DISTRIBUTION - COMBINED CYCLE PLANTS.

• REDUNDANCY

• DESIGN CRITERIA




CONTROL SYSTEM POWER SUPPLY

• TWO SETS OF DC POWER SUPPLIES - ONE SET FORSG/TG-C&I AND OTHER FOR BOP-C&I EACH WITH 2 X100 % CHARGER AND 2 X 100 % BATTERY.

• OTHER IMPORTANT AC LOADS LIKE MMIPIS, PANELINSTRUMENTS, ANALYSERS ETC. SHALL BEPOWERED 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 FOR LONGER LIFE & LESSERMAINTENANCE




• 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 FORTRANSMITTERS, SWITCHES, LS/TS etc.




• 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 LEVEL MONITORING SYSTEM

• TURBINE SUPERVISORY SYSTEM• TDBFP TURBINE SUPERVISORY SYSTEM




• CENTRALISED OPERATION OF MAIN PLANT THROUGHOWS / LVS.

• OFF-SITE PLANTS TO BE CONTROLLED FROM THEIRLOCAL STATIONS WITH STATION-WIDE LAN DATA LINK.

• MINIMUM BACKUP INSTRUMENTATION.• GEOGRAPHICAL DISTRIBUTION - ALTHOUGH NOT VERY

USEFUL FOR POWER PLANTS AS COMPARED TOPROCESS/INDUSTRIES, BEING ADOPTED FOR FEW

AREAS WHERE SIGNALS ARE CONCENTRATED.• REDUCTION OF CABLING, MUCH LESS ERECTION &

COMMISSIONING TIME.




• PROVENNESS

– SUPPLIER’S 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.




• OPERATABILITY – 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

ddcmis lecture

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