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1769-L20現(xiàn)貨 in stock! 歡迎來電咨詢~?。?

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)展推動下而走向成熟。
　　由于一體化減少了信號間的連接接口以及因接口及線路異常帶來的傳遞過程故障，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、臺州電廠2×300MW機(jī)組和安徽鳳臺電廠4×600MW機(jī)組均全廠采用西屋Ovation系統(tǒng)，國華浙能寧海電廠4×600MW機(jī)組全廠采用西門子公司的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)，國華臺山電廠2×1000MW機(jī)組采用北京和利時公司系統(tǒng)，浙江樂清電廠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DCS系統(tǒng)在結(jié)構(gòu)上發(fā)生變化。過去強(qiáng)調(diào)的是控制功能盡可能分散，由此帶來的是使用過多的控制器和接口間連接。但過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)組各個控制系統(tǒng)間的信號聯(lián)系千絲萬縷，互相牽連，一對控制器故障就可能導(dǎo)致機(jī)組停機(jī)，即使沒有直接導(dǎo)致停機(jī)，也會影響其它控制器因失去正確的信號而不能正常工作。
　　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)系密切的多個控制系統(tǒng)和非常復(fù)雜的控制功能集中在一對控制器中，以及上述所說的單元機(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，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
　　一個火電廠有10多個輔助車間，國內(nèi)過去通常都是由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，目前各個輔助車間的控制已趨向適度集中，
　　整合成一個輔控網(wǎng)(簡稱BOP 即Balance Of Plant的縮寫)方向發(fā)展，即將相互獨(dú)立的各個外圍輔助系統(tǒng)，利用計算機(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人值班。
　　近幾年新建工程迅速向這個方向發(fā)展。如國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個輔助車間子系統(tǒng)的監(jiān)控，下設(shè)水、煤、灰三個監(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。整個輔控網(wǎng)的硬件和軟件的統(tǒng)一，減少了庫存?zhèn)淦穫浼叭粘９芾砭S護(hù)費(fèi)用。由于取消了多個就地控制室，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。

ABB 64513591 MAIN CIRC. INTERFACE NINT-72C SEALED

ABB PHARPS32200000 POWER SUPPLY MODULE F8-G2B9B3B6

YS 110420 UC-360DZL Inspection Station / Conveyor

0,5-100A/5A 0,02% Current Transber I561 an-g Siemens,Midwest,Kele,Weston,GR

MODICON MM-PMC2-40-SC USPP MMPMC240SC

ALLEN BRADLEY 1756-M3 USPP 1756M3

ALLEN BRADLEY 1771-NIVR USPP 1771NIVR

MODICON 91-01213-03 USPP 910121303

SIEMENS 6SC9111-2GA05 USPP 6SC91112GA05

SIEMENS 1FT6102-8AC71-3TA0 NSFP 1FT61028AC713TA0

ADLINK D7BCOMBONO NSFP D7BCOMBONO

Siemens 6ES5 921 3WB11 _6ES5921-3WB11 _6ES5213WB11 PCB

Siemens S5 6ES5 482-7LF31 DIGITAL I/O MODULE IN BOX

SIEMENS 6ES5470-4UA12 6ES5 470-4UA12S5 470-4 Analog Output WARRANTY

Siemens 6ES5 430-4UA14/6ES54304UA14 Digital Input Sealed OFFERS ACCEPTED

Siemens S5 Relay Output 6ES5 458-7LB11

Siemens DCS Module 6DS1318-8AB in Box, Seal opened,

SEL-2505 SCHWEITZER REMOTE I/O MODULE L@@K

Square D 8501 RSD4

SIEMENS 6ES5 324-3UA12 IM324 INTERFACE MODULE /BOX

WE SHIP SAME CISCO WS-C3750V2-24TS-E 3750V2-24TS SWICTH 1 YR WARRANT

Siemens 6GK7 343-1EX11-0XE0 NIB

Siemens TP177B 6AV6 642-0BC01-1AX1 Touchscreen Glass

Schneider Modicon Discrete Output AS-BDAP-216/DAP

Schneider Modicon AS-BDEP-209Compact AC IN Module ASBDEP209

Schneider Modicon AS-B807-032 USPP ASB807032

Schneider Modicon PLC AS-B875-001 I/O MODULE ASB875001 8 POINT

Schneider Modicon AS-P120-000 PLC

Schneider Modicon AS-BA33-016 I/O 2VVDC Module

Schneider/Modicon Panelmate Plus 2000 Logic Module

SIEMENS 6ES7 321-1BL00-0AA0 DIGITAL Input MODULE

Sans Digital HA-ARC-ARC1882X 2 Port Mini-SAS 6GB PCI Express x8 RAID Controller

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SIEMENS SINUMERIK 810 6FX1121-4BA02 TESTED WARRANTY

Siemens 560-2126R Remote Communications Module

SIEMENS 6SN1145-1BA01-0BA2 Servo Drive 480V

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SIEMENS 6FC5114-0AA02-0AA2 6FC51140AA020AA2 ver A

ALLENBRADLEYOUTPUTMODULE17710BNSERIESB

ALLEN BRADLEY X-33553-EACH NSPP X33553EACH

ABB DSCS 131 40H-20/3 COMMUNICATION MODULE CARD BOARD 62964

Adimec MX12P 1K x1K progressive scan camera

(9774) 2 Honeywell PC Boards PIC 20 VDG 51400666-100 + 51400665-100

INDRAMAT TRANS-01-M04-0000 USPP TRANS01M040000

XYCOM 8450 USPP 8450

FANUC A16B-0190-0061 USPP A16B01900061

EMERSON M035480 USPP M035480

RELIANCE ELECTRIC 86466-77S NSFP 8646677S

OMRON CV500-BSC11 NSFP CV500BSC11

OPTO 22 G4-LC32 NSPP G4LC32

Siemens 6ES5 441-7LA13 -FS- 6ES54417LA13

Siemens 6ES5-922-1AA11 CPU MODULE BYTE PROCESSOR 6ES59221AA11

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Spectrum Controls 8000 SAM-316

MTL4000 Series isolating interface module BPS08

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Siemens RWX62.7034 Controller

Reliance 0-58719-B

Schneider Modicon Inkworks 2002.

Schneider Modicon AS-B260-005 USPP ASB260005

Schneider Modicon AS-PRTU-252 NSFP ASPRTU252

Schneider Modicon AS-B840-108

Schneider Modicon AS-B804-016 115 VAC Output Module 16Pt WARRANTY-GUARENTEED

Modicon MM-PM10-300 PanelMate Plus MMPM10300

Siemens Simatic 505-2555 Analog Input Module

Siemens 6ES5100-8MA02 6ES5 100-8MA02 SIMATIC S5-100U CPU100 Controller

SIEMENS S5 6ES5 458-7LC11 Relay Output Module

SIEMENS 6DD2920-0AR1 TRANSFORMER SA61

SIEMENS SINUMERIK 840D/DE 6FC5247-0AA00-0AA2

SIEMENS 6SN11131AA000DA0 FNFP 6SN11131AA000DA0

SIEMENS Simodrive 611 LT 108A 6SN1124-1AA00-0LA1 NIB

SIEMENS 6FC9344-5PA NSFP 6FC93445PA

Advantech PCA-6006 CPU Main Board REV A1

Allen-Bradley 1771-OBD PLC-5 Digital DC Output Module - ATS 365 Warranty

ABB ACS800-U1-0050 ACS800U10050 50HP VFD

ADEPT 10330-11350 MODULE 30330-11351

6FC5103-0AB03-1AA2 SIEMENS SINUMERIK Slimline Operators Panel Colour TFT

92692 - , Allen Bradley 2711-M3A18L1 Panelview 24Vdc 2.5W Series A

SQUARE D S174A NSFP S174A

CONTROL TECHNIQUES UNI-3405 USPP UNI3405

BRINKMANN LAUDA RM20 USPP LAUDARM20

NACHI ROP501 USPP ROP501

MEASUREX 51305406-100 NSPP 51305406100

FANUC A20B-1000-0940 USPP A20B10000940

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SIEMENS S5 CPU 6ES5-942-7UA12 PLC Offer

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Siemens TD200 6ES7 272-0AA30-0YA0 Operator Interface

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INTERFACE MODULE IF01A A03B-0801-C101 A03B0801C101 LEBLOND BARON 25

YOSHIMURA FOR SUZUKI KINGQUAD 750 08-1

Siemens 6ES5944-7UB11 in Sealed Box

Siemens MP277-8 6AV6643-0CB01-1AX1 Protective Film ping worldwide

Oriental Motor UDX5114N-E

Schneider Modicon AS-B885-002 ASCII Basic Module

Schneider Modicon AS-516P-008 NSFP AS516P008

Schneider Modicon AS-M380-006 USPP ASM380006

Schneider Modicon AS-8534-000 Connector High/Low Density 800 AEG

Schneider Modicon 110 CPU 311 01 Micro CPU 110CPU31101 AS-IS

Schneider Modicon AS-BDAP-209

SIEMENS U-25N 100120VAC INPUT MODULE

Schneider/Modicon TM2DDO32TK TM2DD032TK

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SIEMENS 500-5011 OUTPUT MODULE 5005011

SIEMENS SINUMERIK 820 T 6EW1861-3BA TESTED WARRANTY

CISCO WS-SVC-CMM-24FXS Communication Media Module

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SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 B2

Advantech PCA-6003 PCA-6003V

Allen-Bradley 2711-TC1-B PanelView Touch Screen

ABB 3HAB-6182-1 PLC CPU Board DSQC-335 WOW

ACCURAY 100639-001 MODULE PRINTED PCB CIRCUIT BOARD VME B209300

A16B-1210-0340 FANUC ELECTRONIC CIRCUIT BOARD

810A02A ALLEN BRADLEY 810 A02A

SIEMENS 6ES5-944-7UB11 FNFP 6ES59447UB11

ASEA BROWN BOVERI 57310001-CX/2 USPP 57310001CX2

ALLEN BRADLEY 8410-MTVE USPP 8410MTVE

MAGNETEK 71616-G3U40301E USPP 71616G3U40301E

HOFFMAN M13-0126-G1008 NSFP M130126G1008

ALLEN BRADLEY 1336-SCR-SP15A NSFP 1336SCRSP15A

Returns: Accepted within 7 days

Siemens 6ES5-373-1AA81 USPP 6ES53731AA81

SIEMENS 6ES5 451-4UA12 6ES54514UA12

SIEMENS Westinghouse NLPS-2707 6ES5 1 Power Supply

Siemens Output ModuleS5-110 6ES5 415-7AB11 WARRANTY

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PWR-C45-1300ACV CATALYST 4500 1300W AC POWER SUPPLY WITH INLINE POWER

GSM Modem Pool 8 Ports RS232 PCI interface Wavecom Module AT Commands Q2303A

Tripp Lite B078-101-PS2 PS/2 Server Interface Module

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Modicon SW-APPR-XXX

Schneider Modicon GOULD 800 SERIES 7 SLOT RACK AS-H819-007

Schneider Modicon ASM84A001 Controller AS-M84A-001

Schneider Modicon AS-E381-904 NSPP ASE381904

Schneider Modicon AS-S908-110

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Schneider Modicon NUL 200/AS-BNUL-200 BLANK UNIT PREWIRING 16X1 NIB

Schneider TSX08EAV8A2 Telemecanique NESA PLC NIB

Schneider Modicon Lexium 17D HP Servo Drive MHDA1112N00

PLC DIRECT D0-06AR USPP D006AR

SIEMENS 6ED1-055-1HB00-0BA0 6ED10551HB000BA0 LOGO DIGITAL IN/OUTPUT MODULE

SIEMENS 6FC5370-0AA00-0AA0 SINUMERIK 802D /PCU 210.3

GM VCIM Module LG 22794713 Chevrolet Chev Traverse Communication Bluetooth

SIEMENS SIMODRIVE Controller Board 6SN1118-0AA11-0AA0 6SC6110-0EA00

SIEMENS SINUMERIK 6FC9320-5DC00 ELECTRONIC HANDWHEEL

SIEMENS 15747-130 SERVO PEN MOORE RECORDER 15747130

Allen-Bradley PanelView 1200 Operator Interface 2711TC1MC

5913868 Grossenbacher TRIPLE AXIS BOARD 5070084

ABB VFD Drive Motor Control 460 V 125 Hp ACS800-U1-0120-5+P901 90 Grnty

A06B-0157-B175#7076 FANUC SERVO MOTORS REMANUFACTURED

75 Agilent/HP Coaxial Switches 8762/8763

RELIANCE ELECTRIC 45C-301A NSFP 45C301A

ALLEN BRADLEY 1785-V40L USPP 1785V40L

ALLEN BRADLEY 1745-LP153 NSFP 1745LP153

GIDDINGS & LEWIS 502-03638-61R4 USPP 5020363861R4

UNICO 109220-ECL00 USPP 109220ECL00

TELEMECANIQUE LC1F500G7 USPP LC1F500G7

FOXBORO P0400YL USPP P0400YL

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SIEMENS 6ES5 374-1FH21 6ES5374-1FH21 memory card

SIEMENS 6ES5-951-7LB14 S5 POWER SUPPLY MODULE 3A 6ES59517LB14

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SIEMENS 6ES5 393-0UA14

Siemens LOGO! PLC 12/24RCo 6ED1 052-2MD00-0BA2

REMAN Allen Bradley 1756-L62 /B ControlLogix Processor 4MB

Texas Instruments 305-01T

Spirent Adtech AX/4000 400301 ATM OC-3c Single Mode Interface

VMETRO VME Midas M120R-16D2 with I/O module DPIO-LI/32k/16bit

Siemens C98043-A1001-L5 09 Board

Modicon AS-T984-107

Schneider Modicon AUTOMATION DEP 216 AS-BDEP-216 DISCRETE INPUT 16X24 VDC

Schneider Modicon TSX DISCRETE OUTPUT MODULE AS-BDAP-217

Schneider Modicon AS-BADU-206 NSFP ASBADU206

Schneider Modicon AS-B824-016

Schneider Modicon POWER SUPPLY AS-P840-000 ASP840000 115/230V

Schneider Modicon AS-S908-000 REMOTE I/O PROCESSOR GOOD TAKEOUT

Schneider 140ACI03000 140ACI03000R NIB

SELECTRON DIC-701 8PT INPUT MODULE 24VDC NIB

Reliance 57401 57401-1B Digital I/O Module NIB

Siemens 6ES7 322-1FF010AA0 Output Module

SIEMENS SINUMERIK 800 6FX1126-1AA03 6FX11261AA03

NOTIFIER CCM-1 COMMUNICATION CONVERTER MODULE CCM 1

SIEMENS Simodrive 611 6SN1118-0NJ01-0AA1 Free Ship

SIEMENS SINUMERIK OP010S 6FC5203-0AF04-0AA0 Membrane Keypad

SIEMENS Fujitsu CA06600-E344 300Gb 15K.6 FC Fibre Channel hard drive HDD H-Plug

ALLENBRADLEY1771-OAD/C120VOUTPUTMODULE

ALLEN BRADLEY SLC-500 1746-OA8 SERIES A OUTPUT MODULE

ABB POWER 6TERMINAL MEDIUM VOLTAGE GROUND TEST DEVICE 3000A SWITCHGEAR B204772

YSI Incorporated 2700D Select 230v Biochemistry Analyzer U

+GF+ George Fischer 317 Diaphram Valve PN: 175 317 057

MODICON AS-9003-180 NSFP AS9003180

ALLEN BRADLEY 1395-B63-D1-PZ USPP 1395B63D1PZ

HARMONIC DRIVE 472448-1 NSFP 4724481

GE FANUC IC3600STDC1 NSFP IC3600STDC1

SIEMENS 6SE7-022-6TP70 USPP 6SE70226TP70

SIEMENS 6AV7722-1BC10-0AB0 USPP 6AV77221BC100AB0

ALLEN BRADLEY 1746-NIO4V FNFP 1746NIO4V

Siemens 6ES5 923-3WB 11 CPU

Siemens S5 6ES55353MA12 6ES5-535-3MA12 COMM PROCESSOR

SIEMENS 6ES5-482-8MA13 USPP 6ES54828MA13

Siemens 6ES5 431-8MA11

Siemens S5-101U Central Controller 6ES5 101-8UA33 PLC S5101U 1018UA33

Siemens Display 6GF6100-1BV

Schneider Modicon TSXDEY32D2K Premium 32 24VDC Input

Square D 8884 SOM-221

SIEMENS 6ES5-312-5CA21 INTERFACE MODULE 6ES53125CA21

WE SHIP SAME CISCO WS-C3750-24TS-S CATALYST 3750-24TS SWICTH 1 YEAR WARRA

SIEMENS 6GK7-343-1HX00-0XE0 6GK73431HX000XE0

Siemens TP27 6AV3627-1QK00-2AX0 Display Panel

Schneider Modicon TSX Compact DTA210/AS-HDTA-201 6 Slot Subrac

Schneider Modicon AS-BDAU-202 OUTPUT MODULE ASBDAU202

Schneider Modicon AS-B814-108 NSPP ASB814108

Schneider Modicon Remote I/O Processor AS-P451-622 -DI-

Schneider Modicon AS-P464-002/ASP464002 Monitor with control