【REXROTHVT-VSPA2-50-10/T5】电话：18506919598，***：312782195本产品网址:http:///b2b/lujun888/sell/itemid-ml厦门莫格电气自动化有限公司<<***>><<诚信>><<创新>><<合作>><<共赢>>的经营理念《《不断开发新产品》》《《为客户提供优质服务》》《《以***大限度追求客户满意》》《《并不断开拓新领域业务》》Allen-Bradley（美国AB)系列产品Schneider(施耐德电气)系列产品Generalelectric(通用电气)系列产品Westinghouse（美国西屋）系列产品SIEMENS(西门子系列产品------------------------------------------------------------------------------------DCS为分散控制系统的英文缩写，上世纪八十年代中后期，我国开始在成套引进的发电机组卜应用DCS，至目前，无论是大机组还是供热的小机组，DCS的应用已越来越广泛，为电力生产的安全、经济运行做出了巨大贡献。1、DCS控制系统可靠性对于各个电厂来说，控制系统的可靠性对整个电厂的安全可靠性是生死攸关的，如何尽可能的提高DCS的可靠性，从而保证电力生产的安全和经济已成为一项越来越重要的工作。本文作者根据自己在电厂从事热控检修工作的经验，从DCS控制系统角度，从控制系统选型、设备安装、程序设计和调试验收以及技术培训等方面，就如何提高整个DCS的可靠性进行了阐述。2、DCS控制系统选型不论在新建机组还是老机组进行的控制系统改造，均面临着尽可能质优价廉地选择理想的控制系统的问题。在此，我们姑且撇开控制系统的价格，仅从提高可靠性要的角度来考虑，在DCS选型过程中需要注意以下各方面的问题：(1)在选择DCS控制系统时要优先考虑有在类似机组上良好运行业绩的控制系统，这样的控制系统通过了工厂试验和实际投运，其可靠性得到了时间的检验。(2)控制系统的硬件一定要具有高可靠性，在电子元器件上的生产工艺各环节上采用了成熟技术，电子模件***好能热拔插。控制器的运算和存储能力要足够，IO卡件具有很强的抗干扰能力。(3)控制系统从结构上要充分地采用冗余技术。对于控制系统的控制器、网络通讯等必须冗余，且各冗余设备之间必须能实现无扰切换。采用冗余结构不仅能避免控制系统的局部故障扩大事故，保证机组安全稳定运行，同时也保证设备故障的在线排除，从而消除事故隐患。(4)控制系统软件的可维护性要好。尤其是以下几个方面：程序及软件的稳定性好，不会出现系统或单个控制器死机等问题;系统自诊断性好，控制器及I/O信号有出错报警;人机交换友好，可以在线修改程序及下装;备品备件有可靠保证，在15年内采购容易且周期短，价格低;控制系统软件的可读性好，其组态功能块的功能是否能轻易实现DCS控制系统的各种工艺功能的需要。3、施工工艺和质量对DCS控制系统的安装有严格规定，选择有良好资质和施工经验的施工单位尤其重要。控制系统选型一旦确定后，施工单位的技术人员要一同介入控制系统设计、出施工图、制定施工措施和进行技术培训等。工程开工前，必须根据工期要求，制定严格的进度计划，并要求施工单位***好施工力量，拿出他们的施工方案。在DCS安装、调试中尤其注意以下问题：(1)施工中要注意盘柜与地的可靠绝缘和盘柜母线的叮靠接地，同时对孔洞等必须做防火处理，盘柜等要有防振动措施。(2)敷设电缆时尤其要注意强电弱电分开，屏蔽线的可靠接地和抗干扰。在布线过程中一定要按照设计图纸施_[，在接线中，电缆及芯线标记要清晰完整，能长期保持;压接端子必须用绝缘管预装端头处理。(3)要严格控制电子设备问的环境条件，注意搞好消防、空调、通风及照明等工作。尤其要提的是通风和空调，由于DCS控制系统温度要求严格，所以应尽早将空调系统投入运行，空调的出风口不能正对机柜或DCS其他电子设备，以免冷凝水渗透到设备内造成危害;同时，电子卡件决不允许有粉尘进入，所以，要求电子间能一直保持环境清洁和滤网干净，注意除湿和调整好温度。4、程序设计和调试验收在程序设计和验收过程中，要充分调动全体员工的积极性，使大家尽可能多地对DCS控制系统进行了解、熟悉和掌握。在组态和验收中，要特别注意以下问题：(1)在程序组态设计中，一定要采用保障机组安全运行控制策略。保护或连锁的逻辑判据必须是充要的。对汽轮机转速、汽轮机润滑油压力等，宜采用硬接线保护和软件保护相结合，建议采用常闭信号，以确保保护的可靠投入;对重要的三取二保护信号，要采用模拟量和开关量进行组合，在保证重要主设备安全的前提下，建议尽可能采用常开信号，以避免保护的误动作。(2)在控制系统选型、设计、测试、验收、投入运行和在线调整各阶段，程序设计和测试人员一定要全程参与，要结合类似控制系统使用中存在的问题，严格审核保护控制逻辑设计和组态的合理性。测试中一定要***测试所有的回路，要仔细记录各次检查和试验结果，若发现与软件相关的问题要立即与供应商取得联系，并将情况完整地反馈给他们以尽快解决问题。(3)要有必需的后备手段：重要的保护和联锁，出了有通讯连接外，还必须具有硬接线方式;对重要的调节设备，除了在操作员站上有软手操外，还必须有后备手操，以便在DCS控制器或I/O模件发生故障时，仍可以对重要设备进行及时干预。P0902BLNodebusExtenderTerminatorAssemblyP0902BPFBM24B/25BTermCable,Wire,(Contact)P0902BQFBM24C/25CTermCable,Wire,(Contact-ExtPwr)P0902BVFBM24B/25BTermCable,Direct,(Contact)P0902BWFBM24C/25CTermCable,Direct,(Cont-ExtPwr)P0902BXFBM24B/25BTermCable,Plug,(Contact)P0902BYFBM24C/25CTermCable,Plug,(Contact-ExtPwr)P0902CAFBM26B/27BTermCable,Wire,(Contact)P0902CBFBM26C/27CTermCable,Wire,(Contact-ExtPwr)P0902CCFBM26B/27BTermCable,Direct,(Contact)P0902CDFBM26C/27CTermCable,Direct,(Cont-ExtPwr)P0902CEFBM26B/27BTermCable,Plug,(Contact)P0902CFFBM26C/27CTermCable,Plug,(Contact-ExtPwr)P0902DZCommunicationProcessor15P0902EADoorAssembly,Rear,Extended,220VacP0902EEDoorAssembly,Rear,Extended,120VacP0902ES2x4CellBusAssemblyP0902HKLetterbugToolP0902JDMIWStraightBayMountingKitP0902JM20FtNodebus"A"CableP0902JN20FtNodebus"B"CableP0902KZ50FtNodebus"A"CableP0902LN50FtNodebus"B"CableP0902LWIE/FENodebusCableKitP0902LXIE/WSNodebusCableKitP0902LYWS/WSNodebusCableKitP0902MFHPInk-JetPrinterForPW's(120Vac)P0902MXHPInk-JetPrinterForPW's(220Vac)P0902MYHPInk-JetPrinterForPW's(240Vac)P0902NDHPInk-JetPrinterForPW's(100Vac)P0902NXPanelMountedDisplayStationInterfaceCableP0902NZDoorAssembly,Front,Extended,120VacP0902PHDoorAssembly,Front,Extended,220VacP0902QRWorkstationProcessor25ForTheJapaneseMarketP0902SFSSIInterfaceCard(OPTO22)P0902SGPW-CProcessorUnit(120Vac)P0902SHPWorPW-NBProcessorUnit(120Vac)P0902SJPW-FBProcessorUnit(120Vac)P0902SKPW-SSIProcessorUnit(120Vac)P0902SLPWOrPW-NBProcessorUnit(220Vac)P0902***PW-FBProcessorUnit(220Vac)P0902SNPW-SSIProcessorUnit(220Vac)P0902SPPW-CProcessorUnit(220Vac)P0902UB13-InchHardenedWorkstationDisplay,120VacP0902UC13-InchHardenedWkstDisplay/TS,120VacP0902UD19-InchHardenedWorkstationDisplay,120VacP0902UE19-InchHardenedWorkstationDisplay/TS,120VacP0902UF13-InchHardenedWorkstationDisplay,220/240VacP0902UG13-InchHardenedWkstDisplay/TS,220/240VacP0902UH19-InchHardenedWorkstationDisplay,220/240VacP0902UJ19-InchHardenedWSDisplay/TS,220/240VacP0902UTFBM39IntelligentTran***itterInput/0-20mAOutputP0902VG80MbDiskDrivew/AP20KanjiSWP0902VH80MbDiskDrivew/AP20KanjiSW(PedestalMtg)P0902VJ80MbDiskDrivew/AP20KanjiSW(WorkstationMtg)P0902VYResistorAssemblyForIntelligentFieldDevicesP0902WD4-PortPassiveTapP0902WH4-PortTerminatingTapP0902WTTrunkCableSpliceSetP0902WW170MbHardDisk(SCSI),ForWorkstationMtgP0902WX170MbHardDisk(SCSI)P0902WY170MbHardDisk(SCSI),PedestalMountedP0902XAFBM41Contact/dcInput/HighCurrentDcOutputP0902XBFBM42Contact/dcIn/HighCurrentdcOutExpanderP0902YTFBM41A/42ATermCable(60V/2.2A),WireP0902YUFBM41C/42CTermCable(Cont/2.2A),WireP0902YVFBM41A/42cTermCable(60V/2.2A),DirectP0902YWFBM41C/42CTermCable(Cont/2.2A),DirectP0902YXFBM41A/42ATermCable(60V/2.2A),PlugP0902YYFBM41C/42CTermCable(Cont/2.2A),PlugP0902ZHFieldConversionKitForFE-8OrIE-16SideDoorsP0902ZH-LFE-8OrIE-16SideDoorKitWithLockP0902ZJFieldConversionKitForIE-32SideDoorP0902ZJ-LIE-32SideDoorKitWithLockP0903AA1x8CellBusAssemblyP0903BX2x8CellBusAssemblyP0903CVAnnunciatorKeyboardP0903CWAnnunciator/NumericKeyboardP0903EMFiberOpticLANConverterP0903HLCellSupportP0903NFMetalIndustrialEnclosureAirFilterP0903NKPowerCord,ac(EC96)P0903PGMtgKitForUFMSPECTRUMFieldbusTerminationP0903PHMtgKitForFIOSPECTRUMFieldbusTerminationP0903PJMtgKitForUCMSPECTRUMFieldbusTerminationP0903PQMigrationExpertDisketteDriveP0903QEFiberOpticFieldbusModem,MidBusP0903QFFiberOpticFieldbusModem,EndBusP0903QKFieldbusPowerDistributionUnitP0903***CableAssembly,PowerPDU/ModemP0903QZInsertKitForAnnunciatorKeyboardP0903RLBatteryReplacementDrive,24V,IPM06P0903SAFBM05TerminationCable,WireP0903SBFBM04ATerminationCable,WireP0903SVCB4CableBalunModuleP0903TWFBM06ATerminationCable,WireP0903UPSPEC200FieldbusIsolator(SSFBI)P0903UQSPEC200StandardControlIntegrator(S2BM04)P0903URMetalVentedEnclosure-SingleICH19,120VacP0903USMetalVentedEnclosure-SingleICH19,240VacP0903UTMetalVentedEnclosure-SingleICH12,120VacP0903UUMetalVentedEnclosure-SingleICH12,240VacP0903UWMetalVentedEnclosure-FieldTerminati***P0903UXMetalVentedEnclosure-FieldTerminationP0903UZSPEC200FieldbusIsolatorCableP0903VSSPECTRUMMigrationIntegratorForUCM(FBP11)P0903VTSPECTRUMMigrationIntegratorForFIO(FBP12)P0903VVSPECTRUMMigrationIntegratorForUFM(FBP13)P0903VWSPECTRUMMigrationIntegratorForUIO(FBP14)P0903VYTerminationCableAssemblyP0903WASPEC200ConfigurableControlIntegrator(S2BM17)P0903WBMetalVentedEnclosure-DualICH19,120VacP0903WCMetalVentedEnclosure-DualICH19,240VacP0903WDMetalVentedEnclosure-DualICH12,120VacP0903WEMetalVentedEnclosure-DualICH12,240VacP0903WFSPEC200FieldbusIsolatorExtensionCableP0903WMAirDeflectorForCustomMountingOfClusterI/OP0903XKMountingKitForUIOSPECTRUMFieldbusTerminationP0903XLSPEC200MICROControlIntegrator(S2MM17)P0903XRSPEC200MICROControlIntegratorExtend(S2MM09)P0903XUSPEC200MICROFieldbusIsolator(MSFBI)P0903YE1x12FBMNestWithAlarmP0903ZEFieldbusIsolator(EC96)P0903ZLIndustrialPwrMod2,120-240Vac,100ms(EC96)P0903ZMInputPowerBus,240VP0903ZNPowerBus,InterP0903ZPPowerBus,Inter,BackupP0903ZQIndustrialPwrMod3A,acBackupPwr(EC96)P0903ZRInputPowerBus,120VP0903ZWAW70LocalFBCableTo1x8OrMS,10FtP0904AHWP20/30SeriesGCIOwo/TSw/Tabletop(EC96)P0904AJWP20/30SeriesGCIOw/TSW/Tabletop(EC96)P0904AK50SeriesGCIOInterfacew/oTS(EC96)P0904AL50SeriesGCIOInterfacew/TS(EC96)P0904ATCableAssemblyPowerPDU/Modem(EC96)P0904AUFieldbusPowerDistributionUnit(EC96)P0904BDPowerBus,24VdcP0904BEPCFieldbusInterface(EC96)P0904BFJunctionBox2,100/120VacP0904BHJunctionBox2,220/240VacP0904BPWP20/30SeriesGCIOw/TS(MIWTop)(EC96)P0904BQWP20/30SeriesGCIOw/oTS(MIWTop)(EC96)P0904BRMIWGCIOw/TS(EC96)P0904BSMIWGCIOwo/TS(EC96)P0904BV19"WSDisplayw/TS(WP20/30Tabletop)(EC96)P0904BW19"WSDisplay(WP20/30Tabletop)(EC96)P0904FHInputBusShortP0904HAIndustrialPowerModule,2LAMBDAP0904HBIndustrialPowerModule,3ALAMBDAP0904HL28VoltPowerSupply,LZS500P0904HM28VoltPowerSupply,LZS1000P0904HN28VoltPowerSupply,LZS1500P0904HV500WattPowerSupplyP0904HW500Div2/Zone2WattPowerSupplyP0904HX250WattDiv2/Zone2PowerSupplyP0911ACCommunicati***Processor15(Synchronous)P0911AJCable,ModiconGWTo984-380,984-480,980-680PLCP0911AKCable,ModiconGWToModicon984A,Or984BPLCP0911ANWideRangePowerModule2(WPM2)P0911ATSynchronousSerialCableAdapterP0911AXPW-CProcessorUnit(120Vac)P0911AYPW-CProcessorUnit(220Vac)P0911AZPWProcessorUnit(120Vac),WithoutMonitorP0911BAPWProcessorUnit(220Vac),WithoutMonitorP0911BDDot-MatrixPrinter,136,Color-120VacP0911BEDot-MatrixPrinter,136,Color-220/240VacP0911BFColorRibbon,DotMatrixColorPrinter136P0911BGBlackRibbon,Dot-MatrixPrinter136P0911BHPrinthead,Dot-MatrixColorPrinter136P0911BJRS232PrinterCable(136Color),40FeetP0911BPVideoExtension(WP20,25,&30),50FeetP0911BQVideoExtension(WP20,25,&30),200FeetP0911BRVideoExtension(WP20,25,&30),300FeetP0911BSVideoExtension(WP20,25,&30),400FeetP0911BTWPGCIOExtension(WP20,25,&30),50FeetP0911BUWPGCIOExtension(WP20,25,&30),200FeetP0911BVWPGCIOExtension(WP20,25,&30),300FeetP0911BWWPGCIOExtension(WP20,25,&30),400FeetP0911BXWPGCIOExtension(WP20,25,&30),50FtP0911BYWPGCIOExtension(WP20,25,&30),200FtP0911BZWPGCIOExtension(WP20,25,&30),300FtP0911CAWPGCIOEXtension(WP20,25,&30),400FtP0911CCPRINTERBROTHER1900220VP0911CDVideoAmp-120V(WP20&25)P0911CEVideoAmp-220V(WP20&25)P0911CFVideoCable(WP20&25-Amp),20FtP0911CKWPGCIOExtension(WP20,25,&30),100FeetP0911CLWPGCIOExtension(WP20,25,&30),500FeetP0911CMWPGCIOEXtension(WP20,25,&30),100FtP0911CNWPGCIOEXtension(WP20,25,&30),500FtP0911CQVideoAmpOutputAdapter(WP20&25))