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6GT2002-0AB00現(xiàn)貨 in stock! 歡迎來電咨詢~！！

單元機組控制系統(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，以及一些機組的煙氣濕法脫硫控制直接進入單元機組DCS控制的成功運行，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，降低了維護的工作量及費用，所以近幾年一體化控制系統(tǒng)在不同容量的新建機組中逐漸得到應(yīng)用，如浙江華能玉環(huán)電廠4×1000MW機組、臺州電廠2×300MW機組和安徽鳳臺電廠4×600MW機組均全廠采用西屋Ovation系統(tǒng)，國華浙能寧海電廠4×600MW機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機組全廠采用I/A系統(tǒng)，國華臺山電廠2×1000MW機組采用北京和利時公司系統(tǒng)，浙江樂清電廠4×600MW機組全廠采用ABB公司的SYMPHONY系統(tǒng)等。 控制系統(tǒng)一體化的實現(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)運行可靠性，相反倒有可能導(dǎo)致故障停機的概率增加。何況單元機組各個控制系統(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)致機組停機，即使沒有直接導(dǎo)致停機，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和上位機構(gòu)成各自的網(wǎng)絡(luò)，在各車間控制室內(nèi)單獨控制，因此得配備大量的運行人員。為了提高外圍設(shè)備控制水平和勞動生產(chǎn)率，達到減員增效的目的，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，即將相互獨立的各個外圍輔助系統(tǒng)，利用計算機及網(wǎng)絡(luò)技術(shù)進行集成，在全廠IT系統(tǒng)上進行運行狀況監(jiān)控，實現(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，集中監(jiān)控點設(shè)在四機一控室里，打破了傳統(tǒng)的全廠輔助車間運行管理模式，不但比常規(guī)減員30%，還提升了全廠運行管理水平。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護費用。由于取消了多個就地控制室，使得基建費用和今后的維護費用都減少。一些老廠的輔助車間也在進行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機組，取得較好效果。

AllenBradley2711E-K10C6PanelView1000EOperatorInterfaceSer.DRev.A

ALLEN-BRADLEY 2711-T6C2L1X TESTED!! PANELVIEW 600 TOUCH SCREEN

ABB 57275871 / UC86-8CH / UC868CH / UC86 8CH / UC86.8CH

Acterna TB / MTS-8000 11.1G Optical Ethernet Transport Module T-BERD / MTS 8000

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MEASUREX 09437300 USPP 09437300

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ASEA BROWN BOVERI 57171847 USPP 57171847

ALLEN BRADLEY 8000-MDD USPP 8000MDD

LORAIN PRODUCTS 486531001 USPP 486531001

HEWLETT PACKARD TEST & MEASURE 9888A USPP 9888A

ALLEN BRADLEY 1336-B007S-EOD/L3 USPP 1336B007SEODL3

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Tripp Lite B054001USB USB Server Interface Module B054-001-USB

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Schneider Modicon Gould AS-B370-001 Register Output ASB370001

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Schneider Modicon AS-E380-902 MEMORY CARTRIDGE ASE380902

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Schneider Modicon module AS-B824-016. 24 VDC INPUT TRUE HIH

Schneider TSX CPP110 TSXCPP110

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SIEMENS 6ES5 440-8MA11 DIGITAL OUTPUT MODULE IN BOX

SIEMENS 6FC5247-0AA02-1AA0 6FC52470AA021AA0 Sinumerik

HILSCHER CIF-50-PB COMMUNICATION MODULE INTERFACE CIF50PB

SIEMENS SIMODRIVE 6SN1146-1AB00-0BA1SINUMETIK 840D NCU-BOX 6FC5247-0AA00-0AA2#4

SIEMENS SINUMERIK 802D KEY BOARD 6FC5603-0AC13-1AA0

SIEMENS MOORE 123712-386 REPAIR KIT FOR MODEL 74 VALVE POSITIONER 41493

Allen-Bradley Panelview 1200 Operator Interface 2711-TC1X

5800: 430-450Mhz Total Surveying Solution 90D

ABB Upper arm cable w/cust. conn. part# 3HAA0001-YH

A06B-0153-B175#7076 FANUC SERVO MOTORS REMANUFACTURED

7451 IC 14 Pin Dip- Dual 2-Wide 2-IN AND/OR/Invert Gate

RELIANCE ELECTRIC 40V2060 NSFP 40V2060

ALLEN BRADLEY 1785-L80E/E USPP 1785L80EE

ALLEN BRADLEY 150-B35NBDA-J1 USPP 150B35NBDAJ1

GETTYS 110-0221 USPP 1100221

TRICONEX 4107 USPP 4107

TECH MOTIVE TOOL 48S440-31023 USPP 48S44031023

FOXBORO P0400DA-0K USPP P0400DA0K

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SIEMENS 6ES5 373-1AA61 -- 6ES53731AA61

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Siemens LOGO! DM8 230R 6ED1 055-1FB00-0BA1 Module NIB

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Texas Instruments 2587678-8008

Spirent Adtech 400308A AX/4000 ATM DS1 Interface

VMware 2U Server 4x Six-Core Istanbul 2.6GHz 128GB RAM

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Schneider Modicon Automation DEP 218/AS-BDEP-218 DEP218ASBDEP218 Module

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Schneider Modicon AS-BADU-204 USPP ASBADU204

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Schneider Modicon PLC Modules DEP216/AS-BDEP-216 DAP216/AS-DDAP-216 DTA200 Rack

Schneider Modicon AS-S482-000 PCB PC Board Card

SCHNEIDER AS-BDAP-210 8POINT OUTPUT MODULE

Sharp JW-264N DC Input Module JW264N

Reliance Automate 30 45C305A 45C305 Processor

SIEMENS 6ES7 322-8BH01-0AB0 DIGITAL OUTPUT MODULE 6ES73228BH010AB0

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Numatics 256 671 Rev. E DeviceNet Quick Connect/Communication Module Converter

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ALLENBRADLEY1771-OBDC1771OBDDCOUTPUTMODULE

Allen Bradley SLC500 CPU w/ 13 Slot holder w/ 4 b modules 4 output modules

ABB PLC CI830

YORK FRICK RXB / RDB REV B COMPRESSOR CONTROL BOARD

[2 UNITS] Keithley 238 High-Current Source-Measure Unit - Functionally Tested

MODICON AS-584L-211 USPP AS584L211

ALLEN BRADLEY 1395-A63-C1-P51-X1 USPP 1395A63C1P51X1

GIDDINGS & LEWIS M.1301.5649 NSFP M13015649

GE FANUC IC3600SHPB1 USPP IC3600SHPB1

SIEMENS 6SE3-221-5DC40 NSFP 6SE32215DC40

SIEMENS 6AV3-520-1DK00 USPP 6AV35201DK00

ALLEN BRADLEY 1391-DES15-DI-AQB USPP 1391DES15DIAQB

Siemens 6ES5 922-3UA11 6ES59223UA11

Siemens S5 6ES5 955-3LF11 6ES59553LF11 Power Supply

SIEMENS 6ES5-482-3BA11 USPP 6ES54823BA11

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SCHWEITZER 250603414X SEL-2506 REMOTE I/O MODULE NIB

Square D 8803 P00CO2C

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WE SHIP SAME CISCO WS-C3750G-24PS-S CATALYST 3750G-24PS SWICTH 1 YR WARRA

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Schneider Modicon TSX08CD12R8AS Telemecanique TSX NESA

Schneider Modicon AS-BDAU-204 SEALED BOX Compact Analog OUT ASBDAU204

Schneider Modicon AS-B810-008 USPP ASB810008

Schneider Modicon POWER SUPPLY AS P800 003

Schneider Modicon AS-P190-112

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Schneider XBTGT5330 XBT-GT-5330 10.4 Panel SEALED

SIEMENS 6ES7 321-1BH02-0AA0 INPUT MODULE 6ES73211BH020AA0

Samsung NP400B2B-A01US Notebook laptop 2.50 GHz 12.5" Screen Size 1.3 MP Cam

SIEMENS DRMC-11-51 4720 POWER METER OPERATOR INTERFACE GOOD TAKEOUT

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SICK COMMUNICATION CONNECTION MODULE CDM420-0102

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ALLEN BRADLEY X1494V-L1 NSFP X1494VL1

ABB DSQC 249A 3HAA 3563-AGA, Rectifier, Remanufactured

ADI-TSSOP -ADG1636BURZ IC CHIP good quality

(A13) 1 GOULD MODICON AS-506P-002 REV C23 MEMORY MODULE A13

INDRAMAT TWM1.1-100-300-W1/115 NSFP TWM11100300W1115

YASKAWA ELECTRIC CIMR-F7U40371E USPP CIMRF7U40371E

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EUROTHERM CONTROLS TC3041/AC/03/100A/120V/220V140/120/4MA20/PA/0/UDR/3D/IND/V2/0

RELIANCE ELECTRIC DPS1A NSFP DPS1A

ORMEC MAC-B200F/K1A NSPP MACB200FK1A

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Spectrum Controls 8000STC-222

NEHB442ASP-N POWERLINK AS POWER INTERFACE MODULE

WS-X4516 Cisco Supervisor Engine V 4516 Control processor

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Schneider Modicon AS-B266-500 USPP ASB266500

Schneider Modicon AS-S290-011 NSPP ASS290011

Schneider Modicon AS-B862

Schneider Modicon AS-B804-116 115v Output Module C PICS

Modicon MM-16MP-001 Interface Panel AS-040A-003

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Allen-Bradley 1771-OB/B Output Module

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ADEPT 10332-12350 INTERFACE MODULE REV P6 SIO CARD

6-S A02B-0200-B503 WITH A16B32000040 A16B12120871 A16B32000054 A16B32000010

955L8R42 EUROTHERM SSD PARKER 590 Link Series DRV DC Drive, Rev. 6.12

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CUTLER HAMMER 55PTHX NSPP 55PTHX

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NEMATRON CORP IWS-1513 USPP IWS1513

MICRON 34-510-883-2341 USPP 345108832341

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Schneider Modicon AS-B875-111 REM ASB875111 ANALOG INPUT MODULE

Schneider Modicon AS-521P-006 USPP AS521P006

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Schneider Modicon 16 OUTPUT MODULE MODEL DAP 217/AS-BDAP-217 24VDC TSX COMPACT

Schneider Modicon DAP 216N/AS-B DAP-216N

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Schneider/Telemecanique Twido TWDLMDA20DTK

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SIEMENS Sinumerik 820G 6FC3801-3AC-Z 6FC8504-1AX00 CRT Monitor Operator Panel

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ADVANTECH PCA-6010 PCA-6010VG PCA6010 in Box

Allen-Bradley 2711-T9C10 ser C rv E 3.15 PanelView 900

ABB 3HAC 5980-1 WRIST COMPLETE 150KG EXCHANGE NO. 6369901-386,

ACCURAY 64829-003 USPP 64829003

A200M5CXXZ1 SIZE5 STARTER 480V COIL

810A16AB ALLEN BRADLEY

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ASEA BROWN BOVERI 57360001-KG USPP 57360001KG

ALLEN BRADLEY 8600-BP8D USPP 8600BP8D

MEASUREX 05325100 USPP 05325100

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SAFELINE 2813189 FNFP 2813189

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

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Schneider Modicon AS-E480-904 USPP ASE480904