ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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1 INTRODUCTION................................................................................................................................................. 2
1.1 ELECTRO MAGNETIC COMPATIBILITY AND CE-MARKING ...................................................................................... 2
2 CONTROL NETWORK ....................................................................................................................................... 2
3 BLOCK 1 CONTROL........................................................................................................................................... 3
3.1 ADVANT CONTROLLER 450 "AC450"................................................................................................................... 33.2 DISTRIBUTED "S800" I/O STATIONS ..................................................................................................................... 9
4 BLOCK 2 CONTROL......................................................................................................................................... 11
5 CENTRAL CONTROL ROOM.......................................................................................................................... 11
5.1 ADVANT STATION 520OS "OS520".................................................................................................................... 115.2 ALARM & EVENT PRINTERS ............................................................................................................................... 135.3 HARDCOPY PRINTERS ........................................................................................................................................ 135.4 ADVANT STATION 130 ENGINEERING STATIONS "AS130"................................................................................... 135.5 DATA STORAGE STATION DSS. .......................................................................................................................... 145.6 BLOCK ALLOCATION OF EQUIPMENT IN CENTRAL CONTROL ROOM...................................................................... 14
6 GENERATING UNIT GT13............................................................................................................................... 15
6.1 ADVANT CONTROLLER 450 "AC450"................................................................................................................. 156.2 ADVANT CONTROLLER 160 "AC160" PROTECTION ........................................................................................ 176.3 ADVANT CONTROLLER 160 "AC160" TURBINE CONTROLLER...................................................................... 176.4 ADVANT CONTROLLER 110 "AC110" VOLTAGE CONTROLLER .................................................................... 186.5 ADVANT STATION 520OS "OS520".................................................................................................................... 18
7 GENERATING UNIT GT11............................................................................................................................... 19
8 GENERATING UNIT GT22............................................................................................................................... 19
9 GENERATING UNIT GT24............................................................................................................................... 19
10 GENERATING UNIT ST10................................................................................................................................ 20
10.1 ADVANT CONTROLLER 160 "AC160" PROTECTION.................................................................................... 2010.2 ADVANT CONTROLLER 160 "AC160" TURBINE CONTROLLER................................................................. 2010.3 DISTRIBUTED I/O RACK "S100 I/O" ............................................................................................................... 21
11 GENERATING UNIT ST20................................................................................................................................ 21
12 CLOCK SYNCHRONISATION......................................................................................................................... 21
12.1 TIME RESOLUTIONS OF EVENT ....................................................................................................................... 21
13 ALARM MANAGEMENT SYSTEM ................................................................................................................. 21
14 FAT OF EQUIPMENT ....................................................................................................................................... 22
15 PROCESSOR AND BUS LOAD, SPARE CAPACITY...................................................................................... 22
16 LOCAL CONTROLLERS IN PACKAGE SYSTEMS ...................................................................................... 22
16.1 FUEL SEPARATOR - SIGNAL EXCHANGE ......................................................................................................... 2416.2 WATER TREATMENT - SIGNAL EXCHANGE ..................................................................................................... 2516.3 COMPRESSED AIR - SIGNAL EXCHANGE ......................................................................................................... 2816.4 CONDENSER CLEANING - SIGNAL EXCHANGE................................................................................................. 2916.5 DIESEL GENERATOR - SIGNAL EXCHANGE ..................................................................................................... 29
ALSTOM Power SwedenSheet
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011030Reg.
B000690/S9P738Description ofDistributed Control System
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Mats Johansson Gaza 140MW CCPP
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16.6 FUEL HEATER - SIGNAL EXCHANGE............................................................................................................... 29
17 REVENUE METERING AND SWITCH-YARD MONITORING.................................................................... 31
17.1 FUEL REVENUE METERING ............................................................................................................................ 32
18 FUNCTIONAL GROUP "FG"........................................................................................................................... 33
19 OPERATOR STATION PASSWORDS ............................................................................................................. 34
20 SINGLE FAILURE CRITERIA ......................................................................................................................... 34
21 SELF-DIAGNOSTIC .......................................................................................................................................... 36
1 IntroductionThe Distributed Control System "DCS" is of fabricate ABB and consists of units from the Advant OCSfamily.Advant OCS is an open, integrated and distributed system for industrial automation. It consists ofcomputer-based units and various communication options including field buses and local and widearea networks. These combine effectively to form powerful automation systems, which can be used inapplications ranging from small machine control to total, plant-wide automation.
All the DCS:s of the Power Generating Units in the plant are connected to each other and to theoperator stations in the Central Control Room by a Control network.For Distributed Control System configuration layout see drawing 2414964 and 2450029.
1.1 Electro Magnetic Compatibility and CE-markingAdvant Controller 110, 160, 450, S800 I/O, the RTA-board of the Advant Station OS 520, and theAdvant Station OS 520 meets the requirement specified in EMC Directive 89/336/EEC and in LowVoltage Directive 72/23/EEC provided appropriate cabinet is used.The cabinets used does not follow the EMC Directive, the degree of protection ratings is; IP55according to EN 60529/10.91 NEMA 12.This is because market outside EU/EFTA does not normally require the EMC Directive accordingEEC.
2 Control networkThe Control network is based on a redundant Master Bus 300 "MB300".MB300 is a high performance serial synchronous half-duplex bus for medium communicationdistances.
The MB300 are connecting all the Generating Units main controllers, Advant Controller 450 "AC450"and the block Controllers, AC450 together.The MB300 is also making it possible for the Operator Stations 520 "OS520" to communicate with allsignals and objects in the AC450.
The MB300 redundancy network numbers is Net11 and Net12.From a functional viewpoint, the redundant networks work in a hot stand-by implementation.
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B000690/S9P738Description ofDistributed Control System
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This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action. In the stand-by mode of operation, basic messages for diagnosticsare continuously sent and received.
The Control network is performed by optical fibres and a star coupler that is power supplied fromredundant 230VAC UPS. This secures that a network fault in plant block #1 is not affecting the otherplant block #2 and vice versa.
3 Block 1 Control
3.1 Advant Controller 450 "AC450"Equipment in Control Equipment Block 1 room:
-The AC450 DCS keeps the application software for: Plant load control Plant main sequence Block sequence Unit sequence Main cooling water system * Closed cooling water system * External liquid fuel * Water treatment system * Main steam system Condenser system Condenser evacuation system Drain system Condensate system Compressed air system * HRSG system Feedwater system Steam turbine systems for ST10 Low voltage switchyard 0,4 kV Medium voltage switchyard 6,10 kV High voltage switchyard 220 kV
* Systems common for both blocks in plant:Redundant process objects are divided between Block-1 and Block-2 controllers.
The controller includes the following main parts:1) Basic unit, comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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3.1.1 Basic unit
The basic unit is an AC450 equipped with the latest functions library (PC-elements) available.Redundant microprocessor is used as a backup to normal pre-selected microprocessor. At indicatedfault in the pre-selected microprocessor, the redundant microprocessor will take over control. This takeover is made bumbles without any manual action. CPU and memory board type: PM511V08.
3.1.2 Communication boards
• Board for MB300 communication: Communication between AC450s and OS520.Redundant communication board and cable are used.From a functional viewpoint, the redundant networks work in a hot stand-by implementation.This means that the primary network has the communication responsibility. The secondarynetwork stands by to automatically take over in case of fault in the primary network. This takeover is made bumbles without any manual action. Communication board type: CS513.
• Board for Advant Fieldbus 100 "AF100". AF100 is the local control network between AC450and the Steam Turbines two AC160. Decentralised I/O stations "S800" are also connected to theAF100. A modem "TC516" is used at the AC450 end.Redundant communication board and cable are used.From a functional viewpoint, the redundant local control networks work in a hot stand-byimplementation.This means that the primary network has the communication responsibility. The secondarynetwork stands by to automatically take over in case of fault in the primary network. This takeover is made bumbles without any manual action. Communication board type: CI522.
• Board for GCOM: GCOM communication board and cable are used for communication with a PC-based Data
Storage System (DSS). There is one GCOM pro Controller AC450 communicating with oneOPC Server on each of the two blocks. There is no redundancy for the GCOM communicationboard.
GCOM communication board and cable used for communication with the switch-yard, GazaWest S/S Operator Station GCOM DDE-server. From the switch-yard Operator Station aremeasurements and breaker status transmitted to the AC450 of block 1.
3.1.3 GCOM Switch-Yard
Signal exchange list AC450 of Block 1<-- Gaza West S/S
NAME DESCR Id UNIT DISPMAX DISPMIND1Q0GS001XN12 BREAKER
TRIPPEDDOC460
D1Q0GS001XP01 BREAKER OPEN DOC458D1Q0GS001XP11 BREAKER
CLOSEDDOC459
D1Q1GS001XP01 BREAKER OPEN DOC454D1Q1GS001XP11 BREAKER
CLOSEDDOC455
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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2414 963
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D1Q2GS001XP01 BREAKER OPEN DOC456D1Q2GS001XP11 BREAKER
CLOSEDDOC457
D1Q8GS001XP01 BREAKER OPEN DOC464D1Q8GS001XP11 BREAKER
CLOSEDDOC465
D1Q9CE001 D1 AOC128 kV 240 0D1Q9CE002 D1 AOC129 A 1000 0D1Q9CE003 D1 AOC130 MW 300 -300D1Q9CE004 D1 AOC131 MVAr 300 -300D1Q9GS001XN12 BREAKER
TRIPPEDDOC463
D1Q9GS001XP01 BREAKER OPEN DOC461D1Q9GS001XP11 BREAKER
CLOSEDDOC462
D2Q0GS001XN12 BREAKERTRIPPED
DOC472
D2Q0GS001XP01 BREAKER OPEN DOC470D2Q0GS001XP11 BREAKER
CLOSEDDOC471
D2Q1GS001XP01 BREAKER OPEN DOC466D2Q1GS001XP11 BREAKER
CLOSEDDOC467
D2Q2GS001XP01 BREAKER OPEN DOC468D2Q2GS001XP11 BREAKER
CLOSEDDOC469
D2Q8GS001XP01 BREAKER OPEN DOC476D2Q8GS001XP11 BREAKER
CLOSEDDOC477
D2Q9CE001 D2 AOC132 kV 240 0D2Q9CE002 D2 AOC133 A 1000 0D2Q9CE003 D2 AOC134 MW 300 -300D2Q9CE004 D2 AOC135 MVAr 300 -300D2Q9GS001XN12 BREAKER
TRIPPEDDOC475
D2Q9GS001XP01 BREAKER OPEN DOC473D2Q9GS001XP11 BREAKER
CLOSEDDOC474
DABQ0CE002 DAB AOC136 A 2000 0DABQ0GS001XN12 BREAKER
TRIPPEDDOC484
DABQ0GS001XP01 BREAKER OPEN DOC482DABQ0GS001XP11 BREAKER
CLOSEDDOC483
DABQ15GS001XP01 BREAKER OPEN DOC485DABQ15GS001XP11 BREAKER DOC486
ALSTOM Power SwedenSheet
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011030Reg.
B000690/S9P738Description ofDistributed Control System
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Mats Johansson Gaza 140MW CCPP
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CLOSEDDABQ1GS001XP01 BREAKER OPEN DOC478DABQ1GS001XP11 BREAKER
CLOSEDDOC479
DABQ25GS001XP01 BREAKER OPEN DOC487DABQ25GS001XP11 BREAKER
CLOSEDDOC488
DABQ2GS001XP01 BREAKER OPEN DOC480DABQ2GS001XP11 BREAKER
CLOSEDDOC481
DG1Q0CE001 DG1 AOC108 kV 240 0DG1Q0CE002 DG1 AOC109 A 1000 0DG1Q0CE003 DG1 AOC110 MW 80 -80DG1Q0CE004 DG1 AOC111 MVAr 40 -40DG1Q0CE005 DG1 AOC112 PF 1 0DG1Q0GS001XN12 BREAKER
TRIPPEDDOC424
DG1Q0GS001XP01 BREAKER OPEN DOC422DG1Q0GS001XP11 BREAKER
CLOSEDDOC423
DG1Q1GS001XP01 BREAKER OPEN DOC418DG1Q1GS001XP11 BREAKER
CLOSEDDOC419
DG1Q2GS001XP01 BREAKER OPEN DOC420DG1Q2GS001XP11 BREAKER
CLOSEDDOC421
DG1Q5GS001XP01 BREAKER OPEN DOC425DG1Q5GS001XP11 BREAKER
CLOSEDDOC426
DG2Q0CE001 DG2 AOC113 kV 240 0DG2Q0CE002 DG2 AOC114 A 1000 0DG2Q0CE003 DG2 AOC115 MW 80 -80DG2Q0CE004 DG2 AOC116 MVAr 80 -80DG2Q0CE005 DG2 AOC117 PF 1 0DG2Q0GS001XN12 BREAKER
TRIPPEDDOC433
DG2Q0GS001XP01 BREAKER OPEN DOC431DG2Q0GS001XP11 BREAKER
CLOSEDDOC432
DG2Q1GS001XP01 BREAKER OPEN DOC427DG2Q1GS001XP11 BREAKER
CLOSEDDOC428
DG2Q2GS001XP01 BREAKER OPEN DOC429DG2Q2GS001XP11 BREAKER
CLOSEDDOC430
DG2Q5GS001XP01 BREAKER OPEN DOC434
ALSTOM Power SwedenSheet
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011030Reg.
B000690/S9P738Description ofDistributed Control System
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DG2Q5GS001XP11 BREAKERCLOSED
DOC435
DG3Q0CE001 DG3 AOC118 kV 240 0DG3Q0CE002 DG3 AOC119 A 1000 0DG3Q0CE003 DG3 AOC120 MW 80 -80DG3Q0CE004 DG3 AOC121 MVAr 80 -80DG3Q0CE005 POWER FACTOR AOC122 PF 1 0DG3Q0GS001XN12 BREAKER
TRIPPEDDOC442
DG3Q0GS001XP01 BREAKER OPEN DOC440DG3Q0GS001XP11 BREAKER
CLOSEDDOC441
DG3Q1GS001XP01 BREAKER OPEN DOC436DG3Q1GS001XP11 BREAKER
CLOSEDDOC437
DG3Q2GS001XP01 BREAKER OPEN DOC438DG3Q2GS001XP11 BREAKER
CLOSEDDOC439
DG3Q5GS001XP01 BREAKER OPEN DOC443DG3Q5GS001XP11 BREAKER
CLOSEDDOC444
DG4Q0CE001 DG4 AOC123 kV 240 0DG4Q0CE002 DG4 AOC124 A 1000 0DG4Q0CE003 DG4 AOC125 MW 80 -80DG4Q0CE004 DG4 AOC126 MVAr 40 -40DG4Q0CE005 DG4 AOC127 PF 1 0DG4Q0GS001XN12 BREAKER
TRIPPEDDOC451
DG4Q0GS001XP01 BREAKER OPEN DOC449DG4Q0GS001XP11 BREAKER
CLOSEDDOC450
DG4Q1GS001XP01 BREAKER OPEN DOC445DG4Q1GS001XP11 BREAKER
CLOSEDDOC446
DG4Q2GS001XP01 BREAKER OPEN DOC447DG4Q2GS001XP11 BREAKER
CLOSEDDOC448
DG4Q5GS001XP01 BREAKER OPEN DOC452DG4Q5GS001XP11 BREAKER
CLOSEDDOC453
DT3Q0CE001 DT3 AOC100 kV 240 0DT3Q0CE002 DT3 AOC101 A 1000 0DT3Q0CE003 DT3 AOC102 MW 80 -80DT3Q0CE004 DT3 AOC103 MVAr 80 -80DT3Q0GS001XN12 BREAKER
TRIPPEDDOC406
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B000690/S9P738Description ofDistributed Control System
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Mats Johansson Gaza 140MW CCPP
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DT3Q0GS001XP01 BREAKER OPEN DOC404DT3Q0GS001XP11 BREAKER
CLOSEDDOC405
DT3Q1GS001XP01 BREAKER OPEN DOC400DT3Q1GS001XP11 BREAKER
CLOSEDDOC401
DT3Q2GS001XP01 BREAKER OPEN DOC402DT3Q2GS001XP11 BREAKER
CLOSEDDOC403
DT3Q5GS001XP01 BREAKER OPEN DOC407DT3Q5GS001XP11 BREAKER
CLOSEDDOC408
DT4Q0CE001 DT4 AOC104 kV 240 0DT4Q0CE002 DT4 AOC105 A 1000 0DT4Q0CE003 DT4 AOC106 MW 80 -80DT4Q0CE004 DT4 AOC107 MVAr 80 -80DT4Q0GS001XN12 BREAKER
TRIPPEDDOC415
DT4Q0GS001XP01 BREAKER OPEN DOC413DT4Q0GS001XP11 BREAKER
CLOSEDDOC414
DT4Q1GS001XP01 BREAKER OPEN DOC409DT4Q1GS001XP11 BREAKER
CLOSEDDOC410
DT4Q2GS001XP01 BREAKER OPEN DOC411DT4Q2GS001XP11 BREAKER
CLOSEDDOC412
DT4Q5GS001XP01 BREAKER OPEN DOC416DT4Q5GS001XP11 BREAKER
CLOSEDDOC417
3.1.4 I/O boards
For types and quantity of I/O boards Circuit diagram 2450 010.The I/O boards are divided in:-Analogue inputs placed in "S100" I/O sub-rack.-Analogue outputs placed in "S100" I/O sub-rack.-Digital inputs placed in "S100" I/O sub-rack.-Digital outputs placed in "S100" I/O sub-rack.
The controller is powered from redundant 230VAC UPS supplies, one from each block to redundantcontroller internal electronic boards.
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B000690/S9P738Description ofDistributed Control System
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3.2 Distributed "S800" I/O StationsEquipment not in Control Equipment Block 1 room:
3.2.1 Electrical building at workshop
One S800 I/O station is placed in electrical building at workshop.There will be hardwired 230VAC digital signal exchange to the equipment placed in the On shorepump house.This station handles I/O signals for this area of the plant for example: Raw cooling water, Maincooling water system, External liquid fuel system.
Included main parts:1) Communication boards.2) I/O boards.
3.2.1.1 Communication boards
Board for Advant Fieldbus 100 "AF100".Redundant communication board and cable are used.From a functional viewpoint, the redundant local control networks work in a hot stand-byimplementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action. Communication board type: CI820.
3.2.1.2 I/O boards
For types and quantity of boards see Circuit diagram 2450 010.
The I/O boards are divided in:-Analogue inputs.-Analogue outputs.-Digital inputs.-Digital outputs.
The station is powered from redundant 230VAC UPS supplies, one from each block to redundantinternal I/O-station electronic boards.
3.2.2 HRSG11
One S800 I/O station is placed at HRSG11.This station handles I/O signals for this area of plant.
Included main parts:1) Communication boards.2) I/O boards.
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B000690/S9P738Description ofDistributed Control System
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3.2.2.1 Communication boards
Board for Advant Fieldbus 100 "AF100".Redundant communication board and cable are used.From a functional viewpoint, the redundant local control networks work in a hot stand-byimplementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action. Communication board type: CI820.
3.2.2.2 I/O boards
For types and quantity of boards see Circuit diagram 2450 010.The I/O boards are divided in:-Analogue inputs.-Analogue outputs.-Digital inputs.-Digital outputs.
The station is powered from redundant 230VAC UPS supplies, one from each block to redundantinternal I/O-station electronic boards.
3.2.3 HRSG13
One S800 I/O station is placed at HRSG13.This station handles I/O signals for this area of plant.
Included main parts:1) Communication boards.2) I/O boards.
3.2.3.1 Communication boards
Board for Advant Fieldbus 100 "AF100".Redundant communication board and cable are used.From a functional viewpoint, the redundant local control networks work in a hot stand-byimplementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action. Communication board type: CI820.
3.2.3.2 I/O boards
For types and quantity of boards see Circuit diagram 2450 010.The I/O boards are divided in:-Analogue inputs.-Analogue outputs.-Digital inputs.-Digital outputs.
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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The station is powered from redundant 230VAC UPS supplies, one from each block to redundantinternal I/O-station electronic boards.
4 Block 2 ControlThe equipment for block2 is identical as for block1 with following exception:Block2 has only limited functions for plant overall control.Process systems common for block1 and block2 has all single signals connected to the Block1controller. In case of failure of block1 controller, some of the most important signals needed forrunning redundant components for serving block2 units are connected to block2 controller.
• Board for GCOM: Same as for block1 except that the GCOM board for communication with theswitch-yard will not be installed in the block2 control.
5 Central Control RoomEquipment in Central Control room:
5.1 Advant Station 520OS "OS520"1 set of Advant Station 520OS:
OS520 computer is a Hewlett Packard operator station with UNIX operative system included.The system consists of a workstation with 256 Mbytes RAM and 9 G-bytes hard disk.Included is operator keyboard, mouse, and colour graphic monitor.Monitor size is (21”).The operator station has TCP/IP connection.The station is included with software for:• Displays for all generating units, BoP and process system.• Displays for logged signals.• For each AC450 controller a limited value of tag no can be selected for regulary sampling andstored for a short time for presentation in an short time trend curve.• Standard/object displays for each tag are available.• Process Alarm and event list presentation.• DCS alarm list.• The system is self diagnostic and all disturbances are shown on a special display page calledsystem alarm page.• Presentation of control system status.• Presentation of trend curves.• Presentation of tags which are sampled in a log table.
Additional included software:When the station is used as an Engineering station there is two main functions:1) Configuration of Operator displays.
With the Display configuration tool all operator displays are configured.Configured displays can be dumped to the DAT recorder for loading on the 7 others Operatorstations in plant.
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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Mats Johansson Gaza 140MW CCPP
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2414 963
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Displays stored on DAT tape can be loaded from DAT recorder.The station can transfer configured displays through the TCP/IP net to the 3 others AdvantOperator Stations placed in CCR with installed client software, whereas the Advant Stationdescribed here has the server software. Although there is only one Advant Station that has theserver software installed it does not have any impact on the plant availability. Server down-loadingof displays is a off-line procedure done after engineering work with display modifications as DATtapes are always possible to use for back-up and transfer of the displays.
2) Configuration of AC450 application program.With the Online Builder tool all AC450 can be selected for modification of the applicationprogram.
3 set of Advant Station 520OS:
OS520 computer is a Hewlett Packard operator station with UNIX operative system included. Thesystem consists of a workstation with 128 Mbytes RAM and 9 G-bytes hard disk. Included is operatorkeyboard, mouse, and colour graphic monitor.Monitor size is (21”).The operator station has TCP/IP connection.The station is included with software for• Displays for all generating units, bop and process system.• Displays for logged signals.• For each AC450 controller a limited value of tag no can be selected for regulary sampling andstored for a short time for presentation in an short time trend curve.• Standard/object displays for each tag are available.• Process Alarm and event list presentation.• DCS alarm list.• The system is self diagnostic and all disturbances are shown on a special display page calledsystem alarm page.• Presentation of control system status.• Presentation of trend curves.• Presentation of tags which are sampled in a log table.
Additional included software:When the station is used as an Engineering station there is two main functions:1) Configuration of Operator displays.
With the Display configuration tool all operator displays are configured.Configured displays can be dumped to the DAT recorder for loading on the 7 others Operatorstations in plant.Displays stored on DAT tape can be loaded from DAT recorder.The station can receive configured displays through the TCP/IP net from the Advant Operatorstations placed in CCR with installed server software, whereas the Advant Station described herehas the client software.
2) Configuration of AC450 application program.With the Online Builder tool all AC450 can be selected for modification of the applicationprogram.
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B000690/S9P738Description ofDistributed Control System
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The four Advant Stations OS 520 are configured in such a way that all displays for all units throughoutthe plant is installed in each of the four stations. One and each of the four stations has the predefinedkeys for selection of displays from the key-board assigned to one of the Units 11/13/22 or 24. Thismakes an Advant Station OS 520 predefined but not forced for control of one Unit.Each of the displays has a big note identifying the display to one Unit (GT11/13 etc.) or Block whennecessary for separation.
Event and alarm lists that can be called up to the screens will be divided into process sections. Thedifferent sections can be selected in any combination to each and one of the Advant Stations OS 520.For instance will one Advant Station OS 520 be pre-assigned only one GT and HRSG, etc. It makes anAdvant Station OS 520 predefined but not forced for control of one Unit.The process sectioning:Process Section number Process etc.1 BoP, the common process for both the blocks2 ST 103 GT 11 and HRSG 114 GT 13 and HRSG 135 ST 206 GT 22 and HRSG 227 GT 24 and HRSG 248 BoP Block 19 BoP Block 210 Middle Voltage Switch-gear, common for both blocks11 Switch-yard, signals from the client systems12-16 Spare
5.2 Alarm & Event Printers4 sets of Matrix Printers:Matrix printer is used for alarm and event list. Connection to operator station with RS 232C. It meansthat the TCP/IP can not be used for the alarm and event printers.The events are divided so block1 events are on printer1, 2 and block2 events are on printer3, 4.
5.3 Hardcopy Printers2 sets of Hardcopy Printers:
Hardcopy printer is used for copy of process displays, alarm list printout, event list printout, trendcurves printout and log pages printout.Any of the operator stations in CCR can use the hardcopy printer through the TCP/IP net.
5.4 Advant Station 130 Engineering Stations "AS130"2 sets of Advant Station 130 Engineering Stations "AS130":
Advant Station 130 Engineering Stations is ready to use and includes everything necessary for
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configuration and programming of Advant OCS systems. Connections are made locally to actual targetsystem. It contains the tools and the necessary hardware for configuration, application building, faulttracing, documentation, testing and commissioning of the following target systems:• Advant Controller 100 Series• Advant Controller 400 SeriesAS 130 Engineering Station is based on an IBM PC-compatible personal computer,suitable for use in industrial environment and satisfies the Advant OCS environmentalimmunity specifications and safety standards. It includes Windows NT 4.0 operating system and thecorresponding manuals.AS 130 stations are equipped with an active 12.1" ThinFilmTransistor colour display, aPentium 120 MHz CPU, a 2 G-Bytes hard disk, and 32 M-Bytes RAM.The AS 130 Engineering Station is the only Engineering station to handle the AC110/AC160.AC110/AC160 couldn't be handled with the Engineering tool in OS520.
5.5 Data Storage Station DSS.The DSS is a basic PI system and it consists of a PI server with six interfaces. Operators useProcessBooks (PB) to read collected history and real-time values. The information flow goes from thecontrol system to the PI server and from PI-server to ProcessBook. The PI interface system consists of,except for the interface, two PI API nodes. An API node is a PC with Windows NT Workstation, PIAPI software and interfaces. The API node communicates with the control system and sends data to PIserver.
The DSS system includes software for:• Long (1-year) and short term (35-days) data storage.• Retrieving of data, event recording, logging and trending of selected points of data.• Displays for logged signals.• Presentation of trend curves.• Automatic generated reports.• Programmable report functions.• Reports in Excel format.• Storage of data on optical disc.
5.6 Block allocation of equipment in Central Control RoomAll units are operational from each OS520 but the equipment will be divided for the two blocks of theplant.For each block of the plant there is the following equipment in Central Control room:• 2 sets of Advant Station 520OS "OS520".• 2 set of Matrix Printers.• 1 set of Hardcopy Printers.• 1 set of Advant Station 130 Engineering Stations "AS130".
The two Advant Station allocated for the block will have quick access to the displays useful foroperation of the block. The alarm/event list will include events relevant for the actual block.
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B000690/S9P738Description ofDistributed Control System
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Common equipment for both blocks:1 set of Laser Printer.The Laser printer is used for documentation of application software for all Controllers.The printer must be manually connected to the Operator station OS520 or Engineering Station ES130used for the actual printout. There is no redundancy for the laser printer, its function to support off-lineprinting of application software does not require redundancy.
The equipment allocated for block1 will be powered from block1 230VAC UPS, equipment allocatedfor block2 will be powered from block2 230VAC UPS.
6 Generating Unit GT13For detailed information about the GT equipment see GT documentation:Protection system description: drawing 3813 375.Turbine governor system description: drawing 3813 373.Computer system description: drawing 3813 374.
The equipment is powered from one 230VAC UPS and fed by redundant cables and controller internalelectronic boards.
Equipment in Gas turbine GT13 Local Control room:
6.1 Advant Controller 450 "AC450"The AC450 computer keeps the application software of the automatic and sequencing of GT andhandles all measurements of electrical signals and orders for MCC.Included main parts:1) Basic unit, comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.
6.1.1 Basic unit
The basic unit is an AC450 equipped with the latest functions library (PC-elements) available.Redundant microprocessor is used for hot standby take over control.
6.1.2 Communication boards
• Board for MB300 communication: Communication between AC450 and OS520.Redundantcommunication board and cable are used for hot standby take over communication.• Board for Advant Fieldbus 100 "AF100". AF100 is the local control network between AC450and the Advant Controllers 1x0. A modem is used in the AC450 end. Redundant communicationboard and cable are used are used for hot standby take over communication.• Board for GCOM: GCOM communication board and cable are used for communication with aPC-based Data Storage System (DSS). There is one GCOM pro Controller AC450communicating with one OPC Server on each of the two blocks. There is no redundancy for theGCOM communication board.
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B000690/S9P738Description ofDistributed Control System
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6.1.3 I/O boards
For I/O boards types see GT documentation.There are other types of cards used for GT application compared with BOP application.
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6.2 Advant Controller 160 "AC160" PROTECTION-AC160 computer keeps the application software for channel 1 of the protection system.Included main parts:1) Basic station, comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.Basic stationThe basic unit is an AC160 equipped with the latest functions library (PC-elements) available.Redundant microprocessor are used for hot standby take over control.
6.2.1 Communication boards
Board for AF100.Redundant communication board and cable are used for hot standby take over communication.
6.2.2 I/O boards
For I/O boards types see GT documentation.
6.3 Advant Controller 160 "AC160" TURBINE CONTROLLER-AC160 computer keeps the application software for turbine controller and channel 2 of the protectionsystem.Included main parts:1) Basic station, comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.
6.3.1 Basic station
The basic unit is an AC160 equipped with the latest functions library (PC-elements) available.Redundant microprocessors are used for hot standby take over control.
6.3.2 Communication boards
Board for AF100.Redundant communication board and cable are used for hot standby take over communication.
6.3.3 I/O boards
For I/O boards types see GT documentation.
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B000690/S9P738Description ofDistributed Control System
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6.4 Advant Controller 110 "AC110" VOLTAGE CONTROLLER-AC110 computer keeps the application software for the generator voltage controller.Included main parts:1) Basic station , comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.
6.4.1 Basic station
The basic station is an AC110 equipped with the latest functions library (PC-elements) available.The station is not equipped with redundant microprocessors.
6.4.2 Communication board
Board for AF100.The communication board operates with two redundant bus cables. In case of disrupted bus cable thecommunication will switch to the intact bus.There is no redundant communication board.
6.4.3 I/O boards
For I/O boards types see GT documentation.
6.5 Advant Station 520OS "OS520"OS520 computer is a Hewlett Packard operator station with UNIX operative system included.The system consists of a workstation with 128 Mbytes RAM and 4 G-bytes hard disk.Included are operator keyboard, mouse, and colour graphic monitor.Monitor size is (21”).The operator station has TCP/IP connection which not is used as standard.The station is included with software for• Displays for gas turbine 13 with auxiliary system, HRSG13 and steam turbine 10.
The displays can be used for operation of equipment in the same way as the equipment could beoperated from Central Control room.
• Displays for logged signals.For each AC450 controller a limited value of tag no can be selected for regularly sampling andstored for a short time for presentation in an short time trend curve.
• Standard/object displays for each tag are available.• Effective dialogue for manual control of the turbo generator unit.• Process Alarm and event list presentation.• DCS alarm list.
The system is self diagnostic and all disturbances are shown on a special display page called systemalarm page.
• Presentation of control system status.• Presentation of trend curves.
Presentation of tags which are sampled in a log table.
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B000690/S9P738Description ofDistributed Control System
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Additional included software:When the station is used as an Engineering station there is two main functions:1) Configuration of Operator displays.With the Display configuration tool all operator displays are configured.Configured displays can be dumped to the DAT recorder for loading on the 7 others Operator stationsin plant.Displays stored on DAT tape can be loaded from DAT recorder.2) Configuration of AC450 application program.With the Online Builder tool all AC450 can be selected for modification of the application program.
The four Advant Stations OS 520 are configured in such a way that only displays for belonging unit isinstalled in each of the four stations. For unit 13 and 24 also the ST displays of the block are installedin the local control room Advant Station OS 520.For the purpose of the unit control there will be a display available where all pant information areavailable which are important for the operators control of the unit from the local control room. Forinstance he will see the other units out-put in MW, and there operation modes.
Event and alarm lists that can be called up to the screens will be divided into process sections. Thedifferent sections can be selected in any combination to each and one of the Advant Stations OS 520.For instance will one Advant Station OS 520 be pre-assigned only one GT and HRSG, etc. It makes anAdvant Station OS 520 predefined but not forced for control of one Unit.
The GT control room also includes:• Alarm/event printer.• Hardcopy printer.• DAT tape recorder.
7 Generating Unit GT11The equipment for GT11 is identical as for GT13 except for operator displays.Operator Displays is included for gas turbine 11 with auxiliary system, HRSG11.
8 Generating Unit GT22The equipment for GT22 is identical as for GT13 except for operator displays.Operator Displays is included for gas turbine 22 with auxiliary system, HRSG22.
9 Generating Unit GT24The equipment for GT24 is identical as for GT13 except for operator displays.Operator Displays is included for gas turbine 24 with auxiliary system, HRSG24 & steam turbine 20.
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B000690/S9P738Description ofDistributed Control System
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10 Generating Unit ST10For detailed information about the ST equipment see ST documentation.The equipment is powered from 230VAC UPS and fed by redundant cables and controller internalelectronic boards.
Equipment in Steam turbine ST10 Local Electrical room:
10.1 Advant Controller 160 "AC160" PROTECTION.-AC160 computer keeps the application software for channel 1 of the protection system.Included main parts:1) Basic station, comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.
10.1.1 Basic station
The basic unit is an AC160 equipped with the latest functions library (PC-elements) available.Redundant microprocessors are used for hot standby take over control.
10.1.2 Communication boards
Board for AF100.Redundant communication board and cable are used for hot standby take over communication.
10.1.3 I/O boards
For I/O boards types see ST documentation.
10.2 Advant Controller 160 "AC160" TURBINE CONTROLLER-AC160 computer keeps the application software for turbine controller and channel 2 of the protectionsystem.Included main parts:1) Basic station, comprising CPU and rack with back plane bus.2) Communication boards.3) I/O boards.
10.2.1 Basic station
The basic unit is an AC160 equipped with the latest functions library (PC-elements) available.Redundant microprocessors are used for hot standby take over control.
10.2.2 Communication boards
Board for AF100.Redundant communication board and cable are used for hot standby take over communication.
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10.2.3 I/O boards
For I/O boards types see ST documentation.
10.3 Distributed I/O rack "S100 I/O"The S100 I/O is a distributed I/O rack placed in the ST10 local electrical room and connected by aback-plane bus extender to the AC450 controller which is placed in central control equipment room.Steam Turbine process signals are connected to this S100 I/O except for the signals to protection andturbine controller.
For I/O boards types see ST documentation.There are other types of cards used for ST application compared with BOP application.
There is no monitoring equipment for local operation in the ST Local Electrical Room.
11 Generating Unit ST20The equipment for ST20 is identical as for ST10.
12 Clock SynchronisationClock synchronisation is performed externally to the two Block 1 and Block 2 controllers that givesclock synchronisation to all other stations on MB300 and AF100.The clock synchronisation within the controllers by use of an external minute pulse signal will providefor the synchronization of the time tagging of events.The relative time accuracy < 2ms for the two Block 1 and Block 2 controllers AC450, which areexternally clock synchronized.Whereas the relative time accuracy on the MB300 control network is < 3 ms and the GT controllerswill be synchronized from the Block 1 and 2 controllers by use of the MB300 control network.
12.1 Time Resolutions of EventEvents are continuously monitored and time tagged with the relative time accuracy of < 4 ms for thetwo Block 1 and Block 2 controllers AC450, which are externally clock synchronized.Whereas the relative time accuracy of events within the separate controllers < 5 ms when the MB300control network is used for the clock synchronisation.Events has the internal time accuracy of < 2 ms within one controller.
The hardwired trips of the different units are monitored and time tagged in order that it should bepossible to see the first out information during shut downs.
13 Alarm Management SystemThe process alarm list has three priority levels in different colours:Red:Alarms related to trip signals.
ALSTOM Power SwedenSheet
22 (36)Respons. dept
GPEDate
011030Reg.
B000690/S9P738Description ofDistributed Control System
Prepared
Mats Johansson Gaza 140MW CCPP
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2414 963
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Yellow:Alarms related to start blocking of GT.Purple:Other alarms.
There is no possibility to switch to related process display from an alarm in the alarm list.
14 FAT of EquipmentA Factory Acceptance Test will be performed on the equipment before shipping to site.
GT equipment will be tested during the GT workshop test.
ST equipment will be tested after the ST Control cabinet assembly.
BOP equipment will be tested after the BOP Control cabinet assembly and will include:Test of all system functions:-Operator stations communication- Printers communication.-Control Network communication-Communication with Distributed I/O stations.-Single failure Criteria's for the control system equipment.
Database and Program application:-Operator mimics are checked-All Input and Output channels are testedThe application Program will not be tested. The correct functions will be verified during thecommissioning on site.
15 Processor and Bus Load, Spare CapacityCycle times of application programs is set in relation to the specific requirements.The controllers are sized for the expected load of the application.The screen response time to operator shall not exceed 2 seconds.The design is based on 20% wired spare capacity.
16 Local Controllers in Package SystemsAll signal exchange to Package PLC's is hardwired and deigned to handle the most importantfunctions.If something is fault in the package the operator has to go to the local PLC for further trouble shooting.
Following local controllers exists:- One Siemens Simatic PLC controls the Fuel separator equipment.
Local is an operator place with mimic display and control buttons.
- Four Mitsubishi Melsec PLC controls the Water treatment equipment.
ALSTOM Power SwedenSheet
23 (36)Respons. dept
GPEDate
011030Reg.
B000690/S9P738Description ofDistributed Control System
Prepared
Mats Johansson Gaza 140MW CCPP
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Each line (total 3 lines) of the seawater reverse osmosis has a PLC and a mimic display & controlbuttons.The 3 lines for freshwater reverse osmosis and demineralisation has one common PLC and amimic display & control buttons.
- One Smart air PLC controls the Compressors for Instrument and service air.Local is an operator place with control buttons.
- Two Siemens Simatic PLC controls the Condenser tube cleaning equipment.
- Two Mitsubishi Melsec PLC controls the Diesel Generators.
- One ? PLC controls the Hypoclorite unit for raw water.
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
Prepared
Mats Johansson Gaza 140MW CCPP
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16.1 Fuel Separator - Signal ExchangeSignal exchange list ABB<-->ALFA LAVALLocal PLC type: Siemens S5 95U.The PLC is power supplied by 230vac ups from ABB.Potential free contacts in both directions.Fault on the PLC impacts the total fuel separation equipment. The fuel day tank gives time for hardware replacement.
FROM ABB TO ALFA-LAVAL KKS nameSTARTOPERATION
1=START
00EGC35AT005 -S01
RELEASE TANK FARM 1=RELEASE(It is OK to fillfuel in tank)
00EGC35AT005 -S02
FROM ALFA-LAVAL TO ABB KKS nameREMOTE/LOCAL 1=REMOTE 00EGC35AT005 -S03SYSTEM IN OPERATION 1=IN
OPERATION00EGC35AT005 -S04
MECHANICAL FAULT 1=NO FAULT 00EGC35AT005 -S05PROCESSFAULT
1=NO FAULT 00EGC35AT005 -S06
ELECTRICALFAULT
1=NO FAULT 00EGC35AT005 -S07
FEEDER EXTERNAL VALVESFAULT
1=NO FAULT 00EGC35AT005 -S08
FEED TO TREATED TANK 1=TO TANK(There is fuelfed to tank)
00EGC35AT005 -S09
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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16.2 Water Treatment - Signal ExchangeSignal exchange list ABB<-->HOHLocal PLC type:4 of MITSUBISHI MELSECThe PLC is power supplied by 230vac ups from ABBPotential free contacts in both directionsFault on the PLC impacts the total equipment. The water tanks give time for hard ware replacement.Analogue signals from water tanks disappear at faults in the PLC.
FROM HOH TO ABBdigital00GCY10GH001XE01 W.TREAT
EQ.FAULT A1=NO FAULT
00GCY10GH001XE02 W.TREATEQ.FAULT B
1=NO FAULT
00GCB11AP001XP11 SALT WATER P.11RUN
00GCB12AP001XP11 SALT WATER P.12RUN
00GCB13AP001XP11 SALT WATER P.13RUN
00GCY10GH001XE03 UF LINE5000GCY10GH001XE04 UF LINE6000GCY10GH001XE05 UF LINE7000GCY10GH001XE06 SEAWATER RO
LINE5000GCY10GH001XE07 SEAWATER RO
LINE6000GCY10GH001XE08 SEAWATER RO
LINE7000GCY10GH001XE09 CIP00GCY10GH001XE10 SERVICE W RO
LINE4000GCY10GH001XE11 SERVICE W RO
LINE5000GCY10GH001XE12 SERVICE W RO
LINE6000GCY10GH001XE13 DEMIN. LINE40
RUN00GCY10GH001XE14 DEMIN. LINE40
REGEN00GCY10GH001XE15 DEMIN. LINE40
STOP00GCY10GH001XE16 DEMIN. LINE50
RUN
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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00GCY10GH001XE17 DEMIN. LINE50REGEN
00GCY10GH001XE18 DEMIN. LINE50STOP
00GCY10GH001XE19 DEMIN. LINE60RUN
00GCY10GH001XE20 DEMIN. LINE60REGEN
00GCY10GH001XE21 DEMIN. LINE60STOP
00GKB21AP001XN11 SERVICE W P.21RUN
00GKB22AP001XN11 SERVICE W P.22RUN
00GKB23AP001XN11 SERVICE W P.23RUN
00GKB13AP001XN11 SW UV PUMP13RUN
00GKB14AP001XN11 SW UV PUMP14RUN
00GKB15AP001XN11 SW UV PUMP15RUN
00GCY10GH001XE22 NEUTRALIZATIONON
00GKB10CL005XH11N OVERFILL PROTSERV W
00GHC10CL005XH11N OVERFILL PROTDEMI W
00GCY10GH001XE23 WATER TREATMAN.REQ.
1=NO REQUEST
00GHC13AP001XN11 DEMI UV PUMP13RUN
00GHC14AP001XN11 DEMI UV PUMP14RUN
00GHC15AP001XN11 DEMI UV PUMP15RUN
00GCY10GH001XE24 WATER TREATUNIT RUN
analogue00GCB40CL005 LEVEL SEA W.
TANK00GKB10CL010 LEVEL SERV. W.
TANK00GHC10CL010 LEVEL DEMI W.
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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00GHC10CL010 LEVEL DEMI W.TANK
00GCE80CL005 LEVEL NEUTRAL.TANK
00GCE80CQ225 PHNEUTRAZILATION
00GCB57CQ240 REDOX ORPLINE1
00GCB67CQ240 REDOX ORPLINE2
00GCB77CQ240 REDOX ORPLINE3
00GCB59CQ005 COND S.W.ROLINE1
00GCB69CQ005 COND S.W.ROLINE2
00GCB79CQ005 COND S.W.ROLINE3
00GKB47CQ005 COND MIX BEDWATER1
00GKB57CQ005 COND MIX BEDWATER2
00GKB67CQ005 COND MIX BEDWATER3
ALSTOM Power SwedenSheet
28 (36)Respons. dept
GPEDate
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B000690/S9P738Description ofDistributed Control System
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16.3 Compressed Air - Signal ExchangeControl signal exchange list ABB<-->"JOHSJÖ"Local plc type: "SMARTAIR"The PLC is power supplied by 2*230vac ups from ABBPotential free contacts in both directions 1=closed contact
FROM ABB TO JOHSJÖCOMRESSOR UNIT1 STBY OPERATION ON 1= Pulsad ON orderCOMRESSOR UNIT1 STBY OPERATION OFF 1= Pulsad OFF orderCOMRESSOR UNIT2 STBY OPERATION ON 1= Pulsad ON orderCOMRESSOR UNIT2 STBY OPERATION OFF 1= Pulsad OFF order
FROM JOHSJÖ TO ABBVENTILATION FAULT 1=NO FAULTSMART AIR STOPPED OR FAULTY 1=NO FAULTCOMPRESSOR FAULTYOR NOT AVAILABLE
0=NO FAULT
00QEA10AN001 RUN 1=RUN00QEA20AN001 RUN 1=RUN00QEA10AN001BLOCKED
1=Disconnector NOTOFF
00QEA20AN001BLOCKED
1=Disconnector NOTOFF
00QEA60AN001BLOCKED
1=Disconnector NOTOFF
00QEA70AN001BLOCKED
1=Disconnector NOTOFF
OBJECT SIGNALS DIRECTLY CONNECTED TO ABB CONTROLCABLES.NO JOHSJÖ CONTROL OF THIS OBJECTS:00QEA50CP005 PRESSURE COMPRESSED AIR Analogue00QEA30AA002YU11 ORDER OPEN TO SERVICE AIR VALVE Digital00QEA30AA002XP01 CLOSED POSITION SERVICE AIR
VALVEDigital
00QEA30AA002XP11 OPENED POSITION SERVICE AIRVALVE
Digital
ALSTOM Power SwedenSheet
29 (36)Respons. dept
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B000690/S9P738Description ofDistributed Control System
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16.4 Condenser Cleaning - Signal ExchangeSignal exchange list ABB<-->KOLLERLocal PLC type: SIEMENS SIEMATIC100UThe PLC is power supplied from internal transformers.Potential free contacts in both directions.
From ABB to KOLLERSTARTOPERATION
1=START
From KOLLER to ABBREMOTE/LOCAL 1=REMOTESYSTEM IN OPERATION 1=IN
OPERATIONCOMMON ALARM 1=NO FAULT
16.5 Diesel Generator - Signal ExchangeHold: nothing available yet.
16.6 Fuel Heater - Signal ExchangeNo local PLC.Digital signals due: potential free contacts in both directions.Analogue signals due: 4-20mA with galvanic isolation in sending end.
From ABB to HEATEXdigitalHEATER 1SELECTED
CLOSED CONTACT=SELECTEDWHEN LOCAL SWITCH INPOS.REMOTE
HEATER 2SELECTED
CLOSED CONTACT=SELECTEDWHEN LOCAL SWITCH INPOS.REMOTE
HEATER 1+2 SELECTED CLOSED CONTACT=SELECTEDWHEN LOCAL SWITCH INPOS.REMOTE
START OF SELECTEDHEATER
CLOSED CONTACT=STARTWHEN LOCAL SWITCH INPOS.REMOTE
analogueSETPOINT FOR TEMPERATURE AFTERHEATERS
TO BE USED WHEN LOCAL SWITCH INPOS.REMOTE
From HEATEX to ABB
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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digitalLOCAL/REMOTE SELECTED CLOSED CONTACT=REMOTE
SELECTEDHEATER 1 IN OPERATION CLOSED CONTACT=IN
OPERATIONHEATER 2 IN OPERATION CLOSED CONTACT=IN
OPERATIONHEATER 1 ALARM CLOSED CONTACT=NO ALARMHEATER 2 ALARM CLOSED CONTACT=NO ALARMCOMMON ALARM CLOSED CONTACT=NO ALARManalogueTEMPERATURE IN CABINET
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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17 Revenue Metering and Switch-yard Monitoring
Double revenue meters are located on 200 kV side of each step up transformer. One meter is located inthe HV switchyard and one back up meter is placed in the power plant central control room.
The positions of the breakers and the revenue values are shown on the DCS operator station screens.
The Single Line Diagram has the number 2414 925.
Rev Metering 0.2%
Rev Metering 0.2% Rev Metering 0.2% Rev Metering 0.2%
DG1 DG2 DG3 DG4
D1D2 DAB
220kV
11 kVGT11
11 kVGT13
11 kVGT22
11 kVGT24
ALSTOM Power SwedenSheet
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B000690/S9P738Description ofDistributed Control System
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The generators have revenue meters 0.2%. All feeders from the MV switch-gear has metering, 0.5%.The transformer feeders have energy meters, motor feeders have power metering.All breaker positions and revenue values are shown on the DCS operator station screens.
17.1 Fuel Revenue MeteringThe fuel unloaded and supplied to the power plant is fed through a metering station, which is 2*100%and it has 0.25% accuracy. The metering station has communication with the plant DCS for total flowand instantaneous flow measurement.
Rev Metering 0.2%
G11
M
Rev Metering 0.5%
Power 0.5%
Rev Metering 0.5%
Pump house
Rev Metering 0.5%
Block 10
Rev Metering 0.2%
G13
M
Rev Metering 0.5%
Power 0.5% Rev Metering 0.5%
Pump house
Rev Metering 0.5%
Rev metering 0.5%
11 kV11 BBA
11 kV13 BBA
6 kV11BBC
6 kV13BBC
ALSTOM Power SwedenSheet
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Each GT has a metering station for its fuel consumption, the total flow and instantaneous flowmeasurement are shown on the operation station of the GT and in the plant DCS operator station.
18 Functional Group "FG"Description of Functional groups used in plant will be included in the control part of the systemdescription for each system in plant.
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19 Operator Station PasswordsAll the operator stations will have passwords for 3 levels of station handling permits.
"Supervisor"Permit to select displays and alarm/eventlist.No Permission to acknowledge alarms, operate objects etc.
"Operator"Permit to acknowledge alarms, operate objects.No permission for configuration of system etc.
"Engineer"Permit for configuration of system.
20 Single Failure CriteriaSegregation is provided in the DCS system such that the failure of one object will not affect theoperation of another object1.
Within the DCS system the I/O-system is not always redundant, but the final control elements aredesigned for failure safe condition. A fault on an individual I/O card will not cause shutdown of agenerating unit, for example analogue controller outputs. The reasons are listed below:
Most of the closed loop control measurements (sensors) are three or two and there is an automatic andmanual de-selection of a faulty measurement1. Only closed loop controls with little influence on plantoperation are equipped with only one measurement.Wherever closed loop control systems with Auto/Manual stations are used, the controls will reject tomanual control in cased of problem and an operator can override control in case the automatic systemis not available1. Any failure will result in annunciation by use of Operator Stations.Modulating control valves are provided with a bypass valve which has either local manual control orremote manual control1.Critical process indications (e.g., drum level) and operator override command signals, emergency trippush buttons are hard-wired and independent of the DCS.
DCS controllers are provided with redundancy with take over without any system interruptCommunication within system will use redundant data highway routed in two segregated paths.
Specifically a single failure in following parts of the DCS system will not cause shutdown of anygenerating unit.
1 This is not valid for the GT and ST those are supplies according to Supplier's Standard scope of supply.
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B000690/S9P738Description ofDistributed Control System
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Operator stations in CCR:There are four operator stations in CCR. If one of them failures there is still three with full operationfacilities for all components in plant.
Operator stations in GT LCR:The GT is normally not operated from LCR. All GT operator mimics is included in CCR operatorstations.
Control network MB300:The Control network is based on a redundant Master Bus 300. Two redundant fibre cables perform it.From a functional viewpoint, the redundant networks work in a hot stand-by implementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action.
Control network Star coupler:The star coupler connecting the fibres in the control network is divided in two parts for each network.It is supplied with redundant power supplies.
Advant Controller AC450 processor and memory:Redundant microprocessor is used as a backup to normal pre selected microprocessor. At indicatedfault in the pre selected microprocessor, the redundant microprocessor will take over control. This takeover is made bumbles without any manual action. CPU and memory board type: PM511V08.
Advant Controller AC450 communication card for MB300:Redundant communication board and cable are used.From a functional viewpoint, the redundant networks work in a hot stand-by implementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action. Communication board type: CS513.
Advant Controller AC450 communication card for AF100:Redundant communication board and cable are used.From a functional viewpoint, the redundant local control networks work in a hot stand-byimplementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action. Communication board type: CI522.
Advant Controller AC450 power supplies:Block AC450s are supplied with double incoming 230VAC UPS power supplies, redundant powersupplies transformers 230VAC-24VDC and redundant voltage regulators 24VDC-5VDC.GT AC450s are supplied with single incoming 230VAC UPS power supply. Some of the parts in theinternal power supply are redundant.
ALSTOM Power SwedenSheet
36 (36)Respons. dept
GPEDate
011030Reg.
B000690/S9P738Description ofDistributed Control System
Prepared
Mats Johansson Gaza 140MW CCPP
Approved
R.AnderssonArchive HG
Checked
H.Hansson
Latest revision
Rev. 6 As Built No.
2414 963
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Field network AF100:The field network is based on a redundant AF100. Two redundant fibre/twisted-pair/coax cablesperform it. From a functional viewpoint, the redundant networks work in a hot stand-byimplementation.This means that the primary network has the communication responsibility. The secondary networkstands by to automatically take over in case of fault in the primary network. This take over is madebumbles without any manual action.
Advant Controller AC160 processor:Redundant microprocessor and memory are used for hot standby take over control.
Advant Controller AC160 processor communication card for AF100:Redundant communication board and cable are used for hot standby take over communication.
Advant Controller AC160 power supplies:Some of the parts in the power supply are redundant.
Distributed S800 I/O stations communication card for AF100:Redundant communication board and cable are used for hot standby take over communication.
Distributed S800 I/O stations power supplies:Distributed S800 I/O stations are supplied with double incoming 230VAC UPS power supply,redundant power supplies transformers 230VAC-24VDC.
21 Self-DiagnosticThe control system equipment of the Advant family OCS is built up of different components and eachof them has relevant self-diagnostic built in. For each components the user manual have informationconcerning the self-diagnostic and most of the components have announcements for faults on thediagnostic displays on the operator stations.
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