SDCS-PIN-48
分散控制系统在火电厂电气自动化中的应用
1.分散控制系统的优越性分析
分散控制系统简称为DCS（Distributed Control System），国内习惯将之称为集散控制系统，其归属于计算机系统的范畴，具体是由过程控制级与过程监控级两个部分组成，并以通信网络进行数据传输，该系统融合当前最为先进的“4C”技术，即计算机技术、通讯技术、显示技术以及控制技术，它的基本设计思想是分散控制、集中操作、分级管理，突出的特点是配置灵活、组态方便。
自20世纪90年年代开始，DCS被广泛应用于国内火电厂机组的自动控制系统当中，在这一背景下，业内的专家学者加大了DCS的研究力度，并取得了一定的成果，DCS也随之变得更加完善，其优越性主要体现在如下几个方面：其一，可靠性更高。当DCS中的某个控制器发生故障时，其它控制功能依然能够正常运行，这种超强的容错设计使系统的可靠性获得了大幅度提升。不仅如此，单个控制器的控制负荷也越来越小，这使得故障的发生几率显著降低。其二，开放性更强。标准化与模块化设计思想的引入，使得DCS的开放性变得越来越强，网络通信技术的应用，使控制器进行功能扩展时，不会影响到系统的原有功能。统一通信协议的应用极大程度地增强了系统的开放性。鉴于DCS的诸多优点，使其在火电厂中的应用范围越来越广，下面本文重点对DCS在火电厂电气自动化中的应用进行论述。
金品质，你选择， 品质超群惠选厦门莫格电气自动化，
诚信经营，质量为首，诚信至上，竭诚为您服务！
对待客户，我们是认真的。
【诚信经营】【质量可靠】【进口原装】【拆包防伪】
【大量库存】【当天付款】【顺丰速运】【欢迎抢购】
CHESTERTON 155E SIZE 09 1.125IN SINGLE CARTRIDGE SS PUMP SEAL B407769
NEW SR8GPL 11/16 IN C-RING FASTENER REPLACEMENT PART D426685
NEW ASCO 100-874 REPAIR REBUILD KIT SOLENOID VALVE D490505
NEW MILWAUKEE 01530-0-40 SERVICE KIT PNEUMATIC CYLINDER REPLACEMENT PART D382389
NEW AMP-ROSE 42B123S153 KR882 CHANGE GEAR REPLACEMENT PART D338408
NEW NATIONAL PARTS SUPPLY 489390246 VALVE STEM STAINLESS D388678
NEW TUCHENHAGEN 933-979 STAINLESS VALVE AIR FITTING REPLACEMENT PART D350094
NEW ALFA LAVAL 9612-1314-02 5 VANE PUMP IMPELLER STAINLESS REPLACEMENT B351519
NEW NUMATICS 229-664 SPEED CONTROL VALVE KIT REPLACEMENT PART D456836
NEW ASCO MP-C-082 REDHAT 120V-AC COIL SOLENOID VALVE D401467
CHESTERTON 1.5X3-13 STEEL PUMP POWER END D499244
NEW VANTON PUMP A-300005-18 VERTICAL PUMP SUMP-GARD BEARING SLEEVE D484215
DEZURIK ACTUATOR 38J6 4IN KNIFE GATE VALVE SEAT FLANGED STAINLESS 8BOLT B251002
NEW TRI CLOVER 19TR-571-01-1 1/2-316 PLUG ASSEMBLY 1-1/2 IN D425523
NEW NORGREN 2796-51 PNEUMATIC LUBRICATOR REPLACEMENT PART D442691
NEW FLOWSERVE 007655-00 STEEL BUSHING BKDN BF-5IN D512832
HONEYWELL MP918B 1113 2 1045 8-13PSI 29PSI-MAX SPRING DAMPER ACTUATOR B295179
HONEYWELL MP918B 1113 2 0240 8-13PSI 29PSI-MAX SPRING DAMPER ACTUATOR B295162
NEW REEVES 605020-06L BRG END PLATE COVER GEAR REDUCER REPLACEMENT PART D363461
NEW 284 6IN DIAPHRAGM REPLACEMENT PART D341663
NEW VICTOR 0740-0013 WELDER SEAT & STEM ASSEMBLY D491647
NEW Q102172 RACK GEAR REPLACEMENT PART D389754
NEW FESTO 175095 MOUNTING KIT REPLACEMENT PART D439204
NEW SKF SR-22-19 STABILIZING RING BEARING REPLACEMENT PART D453641
NEW ARMSTRONG B1672-6 PCA REPAIR KIT STEAM TRAP REPLACEMENT PART D365772
NEW RENOLD 119123/12 120 OFFSET CHAIN LINK CHAIN REPLACEMENT PART B483758
NEW DONALDSON 6342-1001 HANGER BEARING REPLACEMENT PART 769-1001 D337955
NEW WATTS 0841680 KIT F-RK REPLACEMENT PART D398762
NEW NATIONAL PARTS SUPPLY 411914162 36T REV A 2-7/16IN BORE GEAR D393878
YALE 21556701 CENTER GUIDE BLOCK FOR 2 TON CRANE HOIST REPLACEMENT PART B365381
NEW DWYER A-605 MAGNEHELIC AIR FILTER GAGE ACCESSORY PACKAGE KIT D398290
NEW DRESSER 52743 BRASS SHAFT NUT D495925
NEW VICKERS 224342 HYDRAULIC VALVE HYDROSTAT D488297
NEW TOLOMATIC RKBC220 SK24 PNEUMATIC BAND CYLINDER REPAIR KIT D507486
NEW STEARNS 61-546061 COIL BRAKE REPLACEMENT PART D306285
NEW DODGE RELIANCE 132222 SLEEVOIL RT THRUST PLATE 5-7/16IN BEARING B355344
SCHRADER BELLOWS B732750 1-1/2IN ER-II PISTON SEAL KIT CYLINDER PART B261342
NEW GW DAHL 3264-03-2000-50?0 4IN GLOBE VALVE D459061
NEW PSC 203433 130TOOTH 1-7/8N ID STEEL 13-1/4IN OD GEAR REPLACEMENT D300996
SHIM & METAL PROCESSING LIMITED 005X6X100 .005100X6 IN BRASS SHIM B489790
NEW WARREN RUPP 476-053-638 REPAIR KIT D414719
NEW DODGE D-2590-016 VARIABLE SPEED HOUSING HALF PULLEYS D331786
NEW KG SYSTEMS 14552809 DRIVE SHAFT 445X30MM CONVEYOR REPLACEMENT PART D350121
NEW HYTROL B-04925 DRIVE ROLLER CONVEYOR REPLACEMENT PART D393418
NEW PARKER 202424 O-RING KIT D432969
NEW KUNKLE 223000153JE RELIEF VALVE STEM REPLACEMENT PART D481163
NEW WARNER 5371-111-005 ARMATURE EM-210 EM-215 CLUTCH/BRAKE D372313
NEW SUDMO 2901022 DS X620-AS 1IN SEAL KIT REPLACEMENT PART D360975
NEW WATTS 0861477 REPAIR KIT REPLACEMENT PART D425827
NEW MICHIGAN DRILL MDR 200-11/16 2MT 11/16IN TAPER SHANK DRILL BIT D515162
HYTROL B3894X120 B-03894-280 SNUB 14-1/2IN ROLLER ASSEMBLY CONVEYOR B239427
NEW NORGREN 5347501 PNEUMATIC POPPET VALVE SEAL KIT REPLACEMENT PART D439248
KOEI UNIC-10 UA-10 VENTIM ELECTRIC ACTUATOR 24V-AC D469307
NEW ALFA LAVAL 9611-92-0504 B SMP-SF 4IN EPDM SERVICE KIT D393407
NEW MILLER FLUID POWER 11873 090-KB002-00325 CYLINDER REPLACEMENT PART D3
