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單元機(jī)組控制系統(tǒng)一體化的崛起
　　隨著一些電廠將電氣發(fā)變組和廠用電系統(tǒng)的控制(ECS)功能納入DCS的SCS控制功能范圍，ETS控制功能改由DCS模件構(gòu)成，DEH與DCS的軟硬件合二為一，以及一些機(jī)組的煙氣濕法脫硫控制直接進(jìn)入單元機(jī)組DCS控制的成功運(yùn)行，標(biāo)志著控制系統(tǒng)一體化，在DCS技術(shù)的發(fā)展推動(dòng)下而走向成熟。
　　由于一體化減少了信號(hào)間的連接接口以及因接口及線路異常帶來(lái)的傳遞過(guò)程故障，減少了備品備件的品種和數(shù)量，降低了維護(hù)的工作量及費(fèi)用，所以近幾年一體化控制系統(tǒng)在不同容量的新建機(jī)組中逐漸得到應(yīng)用，如浙江華能玉環(huán)電廠4×1000MW機(jī)組、臺(tái)州電廠2×300MW機(jī)組和安徽鳳臺(tái)電廠4×600MW機(jī)組均全廠采用西屋Ovation系統(tǒng)，國(guó)華浙能寧海電廠4×600MW機(jī)組全廠采用西門(mén)子公司的T-XP系統(tǒng)，大唐烏沙山電廠4×600MW機(jī)組全廠采用I/A系統(tǒng)，國(guó)華臺(tái)山電廠2×1000MW機(jī)組采用北京和利時(shí)公司系統(tǒng)，浙江樂(lè)清電廠4×600MW機(jī)組全廠采用ABB公司的SYMPHONY系統(tǒng)等。 控制系統(tǒng)一體化的實(shí)現(xiàn)，是電力行業(yè)DCS應(yīng)用功能快速發(fā)展的體現(xiàn)。排除人為因素外，控制系統(tǒng)一體化將為越來(lái)越多的電廠所采用。
　　3)DCS結(jié)構(gòu)變化，應(yīng)用技術(shù)得到快速發(fā)展
　　隨著電子技術(shù)的發(fā)展，近年來(lái)DCS系統(tǒng)在結(jié)構(gòu)上發(fā)生變化。過(guò)去強(qiáng)調(diào)的是控制功能盡可能分散，由此帶來(lái)的是使用過(guò)多的控制器和接口間連接。但過(guò)多的控制器和接口間連接，不一定能提高系統(tǒng)運(yùn)行可靠性，相反倒有可能導(dǎo)致故障停機(jī)的概率增加。何況單元機(jī)組各個(gè)控制系統(tǒng)間的信號(hào)聯(lián)系千絲萬(wàn)縷，互相牽連，一對(duì)控制器故障就可能導(dǎo)致機(jī)組停機(jī)，即使沒(méi)有直接導(dǎo)致停機(jī)，也會(huì)影響其它控制器因失去正確的信號(hào)而不能正常工作。
　　因此隨之控制器功能與容量的成倍增加、更多安全措施(包括采用安全性控制器)、冗余技術(shù)的采用(有的DCS的核心部件CPU，采用2×2冗余方式)以及速度與可靠性的提高，目前DCS正在轉(zhuǎn)向適度集中，將相互聯(lián)系密切的多個(gè)控制系統(tǒng)和非常復(fù)雜的控制功能集中在一對(duì)控制器中，以及上述所說(shuō)的單元機(jī)組采用一體化控制系統(tǒng)，正成為DCS應(yīng)用技術(shù)發(fā)展的新方向，這不但減少了故障環(huán)節(jié)，還因內(nèi)部信息交換方便和信息傳遞途徑的減少而提高了可靠性。
　　此外，隨著近幾年DCS應(yīng)用技術(shù)的發(fā)展，如采用通用化的硬件平臺(tái)，獨(dú)立的應(yīng)用體系，標(biāo)準(zhǔn)化的通訊協(xié)議，PLC控制器額融入，F(xiàn)CS功能的實(shí)現(xiàn)，一鍵啟動(dòng)技術(shù)的成功應(yīng)用等，都為DCS增添了新的活力，功能進(jìn)一步提高，應(yīng)用范圍更加寬廣。
　　4)全廠輔控系統(tǒng)走向集中監(jiān)控
　　一個(gè)火電廠有10多個(gè)輔助車(chē)間，國(guó)內(nèi)過(guò)去通常都是由PLC和上位機(jī)構(gòu)成各自的網(wǎng)絡(luò)，在各車(chē)間控制室內(nèi)單獨(dú)控制，因此得配備大量的運(yùn)行人員。為了提高外圍設(shè)備控制水平和勞動(dòng)生產(chǎn)率，達(dá)到減員增效的目的，隨著DCS技術(shù)和網(wǎng)絡(luò)通訊功能的提高，目前各個(gè)輔助車(chē)間的控制已趨向適度集中，
　　整合成一個(gè)輔控網(wǎng)(簡(jiǎn)稱(chēng)BOP 即Balance Of Plant的縮寫(xiě))方向發(fā)展，即將相互獨(dú)立的各個(gè)外圍輔助系統(tǒng)，利用計(jì)算機(jī)及網(wǎng)絡(luò)技術(shù)進(jìn)行集成，在全廠IT系統(tǒng)上進(jìn)行運(yùn)行狀況監(jiān)控，實(shí)現(xiàn)外圍控制少人值班或無(wú)人值班。
　　近幾年新建工程迅速向這個(gè)方向發(fā)展。如國(guó)華浙能寧海電廠一期工程(4×600MW)燃煤機(jī)組BOP覆蓋了水、煤、灰等共13個(gè)輔助車(chē)間子系統(tǒng)的監(jiān)控，下設(shè)水、煤、灰三個(gè)監(jiān)控點(diǎn)，集中監(jiān)控點(diǎn)設(shè)在四機(jī)一控室里，打破了傳統(tǒng)的全廠輔助車(chē)間運(yùn)行管理模式，不但比常規(guī)減員30%，還提升了全廠運(yùn)行管理水平。整個(gè)輔控網(wǎng)的硬件和軟件的統(tǒng)一，減少了庫(kù)存?zhèn)淦穫浼叭粘９芾砭S護(hù)費(fèi)用。由于取消了多個(gè)就地控制室，使得基建費(fèi)用和今后的維護(hù)費(fèi)用都減少。一些老廠的輔助車(chē)間也在進(jìn)行BOP改造，其中浙江省第一家完成改造的是嘉興發(fā)電廠2×300MW機(jī)組，取得較好效果。

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ALLENBRADLEY1794-0A8OUTPUTMODULE17940A8

ALLEN-BRADLEY 1771-OG 1771OG TTL Output Module NIB NOS Free USA Shipping

ABB DSQC314B REMAN. DSQC 314B

ACBE17FPU 17" FLAT PANEL MONITOR UPGRADE KIT

A06B-6058-H322 FANUC SERVO AMPLIFIER - -

8" LCD 800x600 Video Zoom Microscope 3.3x-147x w/ Track Stand

SEW EURODRIVE MDX60A0220-503-4-00 USPP MDX60A0220503400

ALLEN BRADLEY 803-A12 NSFP 803A12

ALLEN BRADLEY 3500-P10 USPP 3500P10

INTERMEC J2050-A-07102 USPP J2050A07102

GENERAL ELECTRIC DS3800HPMA1E1D USPP DS3800HPMA1E1D

YAMATAKE 82408470-001 USPP 82408470001

MERLIN GERIN NFNF-36225-AAHJ00 NSFP NFNF36225AAHJ00

Siemens 6ES5-305-7LB11 MODULE 6ES53057LB11

SIEMENS 6ES5 430-4UA12 6ES54304UA12

SIEMENS S5 6ES5 420-4UA14 6ES54204UA14 Input Module

Siemens Digital Input 8 x 24VDC 6ES5 431-8MA11

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RELEASE SuperMicro X9DBU-IF MB ※Check W/ Us for Availability FIRST※

Texas Instruments 5TI-2459514

Telenex PL-951-158-2 T1 Dual Port Interface Module

TSXETY5102 Modicon Premium TSX57 10/100 FCAST MOD TSX-ETY-5102

Siemens DCS Module 6DS1844-8FA in box, Seal opened,

Modicon MM-PMA2-300

Schneider Modicon Gould AS-B875-111 ASB875111 I/O Analog Input PLC Module

Schneider Modicon ASBADU206 TESTED and GUARANTEED Compact Analog Input AS-BADU-206

Schneider Modicon AS-BSEA-020 USPP ASBSEA020

Schneider Modicon AS-C484-600

Schneider Modicon AS-BDAP-210 TSX OUTPUT MODULE NIB

Schneider Modicon I/O HOUSING AS-H8190199 ~ NS

SCHNEIDER Telemecanique Switch XB4 BVB1

Schneider Automation Inc 140 DDI 841 00 140DDI84100 Input Module Sealed

PWR-4000-DC 4000W DC POWER SUPPLY FOR CATALYST 6500/7600 1YR - ASK 4 Q

SIEMENS 6ES5-441-8MA11 PLC OUTPUT MODULE ""

SIEMENS 6DD1641-0AC0 EB11 DIGITAL I/O MODULE IN BOX

Lenze EMF2102IBCV003 Lecom-LI Communication Module EMF2102IBC-V003

SIEMENS Simodrive 6SN1130-1AA11-0BA0

SIEMENS SINUMERIK 840C NC CPU 6FC5110-0BB01-0AA2

SIEMENS Moore XTC Transmitter-Controller 340DBBSAAB NN213

ALLEN-BRADLEY SLC 500 1746-OB8 OUTPUT MODULE QUANTITY

ALLEN BRADLEY RIGHT HAND DOOR HARDWARE KIT 1494V-L3

ABB SACE PR231/P W/ BK15494 P4KLAM04006 OUT OF

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7 Digiboard DBI A/N30000354 Full size I/O ISA card

PACIFIC SCIENTIFIC SC755A001-01 USPP SC755A00101

ALLEN BRADLEY 1771-NT1 FNFP 1771NT1

ALLEN BRADLEY 1336S-B010-AN-EN-GM1-L4 USPP 1336SB010ANENGM1

GENERAL ELECTRIC DS215SLCCG2AZZ01B NSPP DS215SLCCG2AZZ0B

TELEMECANIQUE ATV-66D23-N4 USPP ATV66D23N4

SQUARE D LC-26600AC USPP LC26600AC

CUTLER HAMMER AGSCH120N030040 NSFP AGSCH120N030040

Siemens 6ES5 951-7NB21 -- 6ES59517NB21

SIEMENS 6ES5-752-0AA23/6ES5752-0AA23 INTERFACE MODULE NIB

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Siemens 6AV6642-0DA01-1AX1 OP177B No Box

Siemens LOGO 6ED1 055-1CB00-0BA0 in sealed box

RPS MKS ASTRON AX7685 GENERATOR

Telemecanique TSX1723428

Siemens Simatic 6ES7 151-1AA05-0AB0 6ES71511AA050AB0 Interface Module

Wago 750-478 2-CHANNEL ANALOG INPUT MODULE

SIEMENS 6SL3211-0KB13-7UA0 0.37KW 220V

Modicon AS-P801-001

Schneider Modicon DTA 200/AS-HDTA-200 DTA200ASHDTA200 Primary Subrack

Schneider Modicon ASB232501 Output Module AS-B232-501

Schneider Modicon AS-B875-011 8CH Analog Module ASB875011

Schneider Modicon AS-W922-015 GENERIC OEM CABLE ASW922015

Schneider Modicon Gould AS-C484-266 484 Controller Programmable

Schneider Modicon AS-J892-001 Communication Module ASCII 984/800 RI/O INTERFACE

SCHNEIDER AUTOMATION PM+ 1000 MODBUS PLUS INTERFACE NNB

SIEMENS 505-4332 MODULE DIGITAL INPUT 505 32IN 14-30VDC 5054332

RELIANCE ELECTRIC I/O PROCESSOR MODULE 45C200A

SIEMENS 7MH71561AA001AA MILLTRONICS SF500 INTERFACE NIB

SIEMENS SINUMERIK OP 010S 6FC5203-0AF04-0AA0 NIB

Prosoft MVI56-ADM MVI56ADM Communications Module

SIEMENS Parameter Board 6SN1114-0AA01-0AA0 WOW

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D 6FC5247-0AA00-0AA26SN1123

SIEMENS 6FC3-551-1AC-Z USPP 6FC35511ACZ

ALLENBRADLEY2706E43J128B1OPERATORINTERFACEDATA

Allen Bradley Terminal Board 9101-1779 Amphenol Connector /Sealed

ABB K - Line K-600S 600V 600A AIR CIRCUIT BREAKER

ZEBRA Z220-451-00054 USPP Z22045100054

(SIEMENS) Spare parts C98043-A1200-L good in condition for industry use

MITSUBISHI FR-SF-2-15K-BN04U-573 USPP FRSF215KBN04U573

ALLEN BRADLEY 1336VT-B040-EOR-FA2-L3 NSFP 1336VTB040EORFA2

GENERAL ELECTRIC 5K33GN2A USPP 5K33GN2A

FISHER ROSEMOUNT DM6004X1-FA1 NSFP DM6004X1FA1

SIEMENS 6ES5-927-3KA13 NSPP 6ES59273KA13

REXROTH 1070080542-404 USPP 1070080542404

THK GL20N-106-SWQ-B20Q-U-C-X-N-Y-A053846 NSFP GL20N106SWQB20QU

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Siemens 6ES5 422-8MA11 6ES54228MA11

Square D 8030 DLM-110

Schneider TCCX1730LW Operator Interface Module with Cable

Wireless Eight 8 Channel Relay Module Board Virtual Com Port Controlled

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Siemens Touch Panel TP170A 6AV6545-0BA15-2AX0 ping Worldwide

Shimaden SR2201-21B

Schneider Modicon ASH819100800 Series Rack AS-H819-100

Schneider Modicon AS-B573-005 USPP ASB573005

Schneider Modicon Controller AS-B890-101

Schneider Modicon AS-H827-100 11-Slot PLC I/O Rack

Schneider Modicon AS-B846-001 Analog Mix Voltage In ASB846001

Modicon 19" Operator Interface 557VCM74210 11141

SIEMENS 6ES7421-1BL01-0AA0 SIMATIC S7 DIGITAL INPUT MODULE 62669

Schneider Modicon 140CRA21110 MB Drop AC Module

SIEMENS MC S85 OPERATOR PANEL 853 362 GOOD TAKEOUT

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SIEMENS 6SN1123-1AA00-0HA1 Power Supply Module 8 Amp AS-IS

SIEMENS 6SN1123-1AB00-0AA1 SIMODRIVE LT-MODUL INT. 2X15A WORKING VERY CLEAN

SIEMENS 6FC5-210-0DA20-2AA1 MAIN MEMORY CONTROL UNIT MMC 103. 32MB DRAM

AllenBradleySLC500OutputModule1746-OW16SeriesA

Allen-Bradley 1 Pair AC Output Modules 2755-OA5S

ABB CIRCUIT BREAKER S5H 400 AMP 3P # S5H400EWS4 803NW

ADEPT TECH 90332-48050 NSFP 9033248050

(4459) Allen Bradley Industrial Computer 6181-CIBBBBZZZ (4459)

INDRAMAT MAC112A-0-VD-3-C/130-A-1 USPP MAC112A0VD3C130A

TOSHIBA VT130G2-4400 USPP VT130G24400

FANUC A06B-6044-H008 USPP A06B6044H008

DANFOSS 175L2045 USPP 175L2045

RELIANCE ELECTRIC 419003-R NSPP 419003R

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MEASUREX 052940-00 USPP 05294000

Siemens 6ES5 377-0BB41 6ES53770BB41

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Siemens 6ES5 385-8MB11 6ES53858MB11 High Speed Counter

Siemens PG 615 Programmer 6ES5 615-0UA11 WOW

Siemens 6SE7014-0TP50-Z NIB

Siemens TP7 6AV3607-1NH00-0AX0 Touch Panel

Siemens 6SA8110-2BC00

METTLER TOLEDO B90074000A SERIAL INTERFACE MODULE NNB

XENPAK-10GB-SR 10GBASE-SR MODULE FOR CISCO

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Siemens PLC 6ES7 216-2AD23-0XB0 6ES7216-2AD23-0XB0

Reliance 0-52003

Schneider Modicon AS-9534-002/AS9534002 7 Slot Chassis Rack

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Schneider Modicon AS-P800-003 NICE

Schneider Modicon AS-B805-016 OUTPUT MODULE ASB805016

Schneider Modicon AS-B275-501 10-60 VDC INPUT MODULE GOOD TAKEOUT

Modicon PanelMate Plus MM-PM10300C 92-01685-00 WOW

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SIEMENS Sinumerik System 800 6FC3988-7AF01 9 inch monitor

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SIEMENS Circuit Board 6FC9310-1MB01 _ 6FC93101MB01 _ DO-L1348-1A01

ADb PROX-H471

Allen-Bradley 1785-BCM Output Module

ABB ACS 600 FREQUENCY DRIVE 250HP ACS60402605000B00009R1

Acton Research SpectraPro 2300i 0.300m Imaging Triple Grating Monochromator/Spec

6ES7317-2EJ10-0AB0 Brand , Factory Sealed,

90-

SIEMENS NXD63S120A USPP NXD63S120A

BOSCH 1070071356-101 USPP 1070071356101

BAILEY CONTROLS IMASI-03 USPP IMASI03

MODICON AS-P500-610 USPP ASP500610

JR3 VME-2105 USPP VME2105

CONTROL TECHNIQUES AXIMA0400 USPP AXIMA0400

Siemens 6ES5 095-8MA04 6ES50958MA04

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SIEMENS 6ES5 777-0BC00 -- 6ES57770BC00

SIEMENS S5 6ES5 470-4UC12 Module 6ES5-470-4UC12

Siemens S5Input Card 6ES5420-4UA13 E Stand 02

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HP Agilent 54650A HP-IB Interface Module

WS-X6748-GE-TX Cisco Exp. Forw.720 Interface Module Switch 48 ports ma

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Siemens LOGO! RS232 CABLE 6ED1 057-1AA00-0BA0

Omron C200H-OD218

Schneider Modicon AS-BVIC-224 4Ch 24V 25KHz Counter Input VIC-224 ASBVIC224 VIC224

Schneider Modicon Analog Input Module AS-B875-111 B875111

Schneider Modicon AS-J474-000 NSFP ASJ474000

Schneider Modicon 5V TTL FAST INPUT MODULES AS-B829-116

Schneider Modicon AS-WBXT-201

Schneider Modicon /115VAC 8-Pt Output Module AS-B350-001

SLC500 Input Module AB 1746-IV16/C

Schneider Telemecanique XBTGT5330 95%

Siemens Texas Instruments U-15T Output Relay Module U15T

Siemens 6AG7010-0AA00-0AD0 SIMATIC Panel PC IL70 Integrated Display Computer 12"

SIEMENS Sinumerik 6FX1136-2BA01 CPU Module

Eaton Communications Adaptor Module 58801-441

SIEMENS Simodrive LT Module Int 50A

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5357 BBE

ADLink NuDAQ ACL-6128A Isolated Analog Output Card NIB

ALLEN-BRADLEY 800MB-CPB16RAS PUSH BUTTON

ABB 20 HP ACH550-VDR-031A-4+F267 AC Drive w/ Bypass and Disconnect VFD

ACCU SORT 5400 USPP 5400

A06B-6066-H012 FANUC SERVO AMPLIFIER REMANUFACTURED

800 HP AC MOTOR 3/60/4160 VOLT 593 RPM 127 AMP

SIEMENS 3WN6231-0FC74-1FA1 USPP 3WN62310FC741FA1

ALLEN BRADLEY 8520-3S5A-BAT-EX4-S-1-2-3-5-7 USPP 85203S5ABATEX4S2

ALLEN BRADLEY 6155-RLYZGLCHGFZ USPP 6155RLYZGLCHGFZ

JOHNSON CONTROLS NU-DCM140-0 USPP NUDCM1400

GENERAL ELECTRIC DS3800NFCD1S1L USPP DS3800NFCD1S1L

YASKAWA ELECTRIC CIMR-F7U4018 USPP CIMRF7U4018

MODICON 140-CPS-114-20 USPP 140CPS11420

Siemens 6ES5-310-3AB11 NSPP 6ES53103AB11

SIEMENS 6ES5 430-8MB11 6ES54308MB11

SIEMENS S5 6ES5 458-4UA12 Relay Output Module

Siemens Digital Output Module 6ES5-451-8MA11 17038

SIEMENS 6ES7 222-1HF21-0XA0 6ES7222-1HF21-0XA0 FreeShip

Siemens OP277 6AV6643-0BA01-1AX0 Membrane Keypad

Ready bundle for WS-X6708-10G-3C 8 Cisco X2-10GB-ER

GE FANUC interface module ethernet smartstack 10baset IC300ETN100A

TEXAS INSTRUMENTS 500 5040 NETWORK INTERFACE Module

TSXASZ4Siemems 6SE5 942-7UB11 6SE5942-7UB11 115U CPU 942B

Siemens EM 222 6ES7 222-1BF22-0XA0 EM222 PLC

Modicon NW-BM85-000

Schneider Modicon AS-H827-103 800 Series 11-Slot I/O PLC Module Rack Chassis

Schneider Modicon AS-BDAP-250 Compact Combo ASBDAP250