HGT20573-1995分散型控制系統(tǒng)復習過程

1、Good is good, but better carries it.精益求精，善益求善。HGT20573-1995分散型控制系統(tǒng)HGUDCTRADESTANDARDOFTHEPEOPLESREPUBLICOFCHINA中華人民共和國行業(yè)標準HG/T20573-95CodeforDistributedControlSystemEngineeringDesign分散型控制系統(tǒng)工程設計規(guī)定IssuedonAugust28,1995ImplementonNovember1,1995MinistryofChemicalIndustryofThePeoplesRepublicofChinaDocume

2、ntofMinistryofChemicalIndustryHJF(1995)647ThenotificationaboutissuingtheprofessionalstandardCodefordistributedcontrolsystemengineeringdesignTotheprovinces,autonomousregions,municipalities,municipalchemicalagencies(bureaus,companies)listedinthestateplan,therelevantorganizations:TheCodefordistributedc

3、ontrolsystemengineeringdesignconstitutedbyChinaChengdaChemicalEngineeringCo.,Ltd.undertheorganizationoftheCentralStationofAutomationDesignTechnologyofourministryhasbeenapprovedtobevoluntaryprofessionalstandard;thenumberisHG/T20573-95.ItwillenterintoforcefromNov1,1995.Thisstandardisundertheadministra

4、tionoftheCentralStationofAutomationDesignTechnologyoftheministryandwillbepublishedandissuedunderthechargeoftheCenterforEngineeringConstructionStandardCompilationoftheministry.MinistryofChemicalIndustryAugust28,1995TRADESTANDARDOFTHEPEOPLESREPUBLICOFCHINA中華人民共和國行業(yè)標準CodefordistributedcontrolsystemEngi

5、neeringdesign分散型控制系統(tǒng)工程設計規(guī)定HG/T20573-95ChiefEditingorganization:ChinaChengdachemicalengineeringCo.,Ltd.Approvaldepartment:MinistryofChemicalIndustryImplementationdate:November1,1995CenterforEngineeringConstructionStandardCompilation,MinistryofChemicalIndustry1995,BeijingContentsTOCo1-2hzuHYPERLINKl_T

6、oc1464278031GeneralPAGEREF_Toc146427803h5HYPERLINKl_Toc1464278041.1PurposePAGEREF_Toc146427804h5HYPERLINKl_Toc1464278051.2ScopeofapplicationPAGEREF_Toc146427805h5HYPERLINKl_Toc1464278061.3ReferencedstandardsandcodesPAGEREF_Toc146427806h5HYPERLINKl_Toc1464278072DCSapplicationprinciplePAGEREF_Toc14642

7、7807h6HYPERLINKl_Toc1464278082.1NecessityPAGEREF_Toc146427808h6HYPERLINKl_Toc1464278092.2FeasibilityPAGEREF_Toc146427809h6HYPERLINKl_Toc1464278103BasicfunctionsofDCSPAGEREF_Toc146427810h7HYPERLINKl_Toc1464278113.1ProcesscontrolfunctionPAGEREF_Toc146427811h7HYPERLINKl_Toc1464278123.2Operatingfunction

8、PAGEREF_Toc146427812h7HYPERLINKl_Toc1464278133.3DisplayfunctionPAGEREF_Toc146427813h7HYPERLINKl_Toc1464278143.4AlarmfunctionPAGEREF_Toc146427814h7HYPERLINKl_Toc1464278153.5TablingandprintingfunctionPAGEREF_Toc146427815h7HYPERLINKl_Toc1464278163.6InformationmanagementfunctionPAGEREF_Toc146427816h7HYP

9、ERLINKl_Toc1464278173.7CommunicationfunctionwithuppercomputerandPLCPAGEREF_Toc146427817h8HYPERLINKl_Toc1464278183.8SystemconfigurationfunctionPAGEREF_Toc146427818h8HYPERLINKl_Toc1464278194BasicstructureofDCSPAGEREF_Toc146427819h9HYPERLINKl_Toc1464278204.1OperationstationPAGEREF_Toc146427820h9HYPERLI

10、NKl_Toc1464278214.2Controlstation(processinterfaceunit,controlunitanddatacollectionunit)PAGEREF_Toc146427821h9HYPERLINKl_Toc1464278224.3CommunicationbusPAGEREF_Toc146427822h10HYPERLINKl_Toc1464278234.4ComputerinterfaceofDCSPAGEREF_Toc146427823h10HYPERLINKl_Toc1464278244.5Systemconfigurationstation(e

11、ngineerstation)PAGEREF_Toc146427824h10HYPERLINKl_Toc1464278255PowersupplyofDCSPAGEREF_Toc146427825h12HYPERLINKl_Toc1464278265.1ExternalpowersupplyofDCSPAGEREF_Toc146427826h12HYPERLINKl_Toc1464278275.2InternalpowersupplyofDCSPAGEREF_Toc146427827h12HYPERLINKl_Toc1464278286ReliabilityofDCSPAGEREF_Toc14

12、6427828h13HYPERLINKl_Toc1464278296.1RedundancyrequirementPAGEREF_Toc146427829h13HYPERLINKl_Toc1464278306.2QualityrequirementsforhardwarePAGEREF_Toc146427830h13HYPERLINKl_Toc1464278316.3InterferenceImmunityPAGEREF_Toc146427831h13HYPERLINKl_Toc1464278326.4ExpansionofthesystemPAGEREF_Toc146427832h13HYP

13、ERLINKl_Toc1464278336.5MaturityofsystemsoftwarePAGEREF_Toc146427833h13HYPERLINKl_Toc1464278347ControlroomPAGEREF_Toc146427834h14HYPERLINKl_Toc1464278358CablesandwiresPAGEREF_Toc146427835h15HYPERLINKl_Toc1464278368.1ConnectionmethodPAGEREF_Toc146427836h15HYPERLINKl_Toc1464278378.2Selectionofconductor

14、sPAGEREF_Toc146427837h15HYPERLINKl_Toc1464278388.3LayingofcablesandwiresPAGEREF_Toc146427838h15HYPERLINKl_Toc1464278398.4WiringmethodPAGEREF_Toc146427839h15HYPERLINKl_Toc1464278409ElectricgroundingPAGEREF_Toc146427840h16HYPERLINKl_Toc1464278419.1ProtectivegroundingPAGEREF_Toc146427841h16HYPERLINKl_T

15、oc1464278429.2ShieldedgroundingPAGEREF_Toc146427842h16HYPERLINKl_Toc1464278439.3SignalgroundingPAGEREF_Toc146427843h16HYPERLINKl_Toc1464278449.4IntrinsicsafetygroundingPAGEREF_Toc146427844h16HYPERLINKl_Toc1464278459.5SpecialgroundingPAGEREF_Toc146427845h16HYPERLINKl_Toc1464278469.6Grounding,executio

16、nmaterialandinstallationPAGEREF_Toc146427846h16HYPERLINKl_ToasksofbasicdesignandengineeringdesignPAGEREF_Toc146427847h17HYPERLINKl_To1BasicdesignstagePAGEREF_Toc146427848h17HYPERLINKl_To2EngineeringdesignstagePAGEREF_Toc146427849h17HYPERLINKl_ToCSa

17、pplicationconfigurationPAGEREF_Toc146427850h19HYPERLINKl_To1DCSsupplierconfigurationPAGEREF_Toc146427851h19HYPERLINKl_To2DCSuserconfigurationPAGEREF_Toc146427852h19HYPERLINKl_Tonspection,installationandcommissioningofDCSPAGEREF_Toc146427853h20HYPERLINKl_Toc1464

18、2785412.1InspectionofDCSPAGEREF_Toc146427854h20HYPERLINKl_To2InstallationandcommissioningPAGEREF_Toc146427855h20HYPERLINKl_ToompilationofDCStechnicalspecificationPAGEREF_Toc146427856h21HYPERLINKl_To1ThefunctionoftechnicalspecificationPAGEREF_Toc146427857h21HYPE

19、RLINKl_To2CompilationtimeoftechnicalspecificationPAGEREF_Toc146427858h21HYPERLINKl_To3MaincontentsoftechnicalspecificationPAGEREF_Toc146427859h21HYPERLINKl_Toc146427860AppendixADCSengineeringdesignprocedurePAGEREF_Toc146427860h23HYPERLINKl_Toc146427861AppendixBOutlineforCom

20、pilationofDCSTechnicalSpecificationPAGEREF_Toc146427861h27Compilationcomments351General1.1PurposeThiscodeisatechnicalspecificationconstitutedfortheapplicationofdistributedcontrolsystem(hereinafterreferredtoasDCS)inchemicalautomationengineeringdesigntohelpthedesignerstoadoptDCScorrectlyandreasonablya

21、ndfullyrealizethesuperiority,practicabilityandreliabilityofDCS.1.2ScopeofapplicationThiscodeappliestothefollowingworkingscopeintheDCSengineeringdesign:1.2.1Investigatetheexecutiveplanofprocessmonitoringsystem;1.2.2WorkoutthepreliminaryconfigurationofDCShardwaresystem;1.2.3CompiletheDCStechnicalspeci

22、fication;1.2.4AssessthequotationforDCS;1.2.5SubmittheexternaldesignconditionsofDCSinstallationandoperation;1.2.6Completethetechnicaldocumentsrequiredbywork,suchasDCSapplicationconfiguration.1.3ReferencedstandardsandcodesZBN10008-89TerminologiesofdistributedcontrolsystemISA-S5.1-1984Graphicalsymbolsa

23、ndlettercodesforinstrumentsHG20505-92GraphicalsymbolsandlettercodesforprocessdetectionandcontrolsystemHG20508-92RegulationfordesignofcontrolroomHG20509-92RegulationfordesignofinstrumentpowersupplysystemHG20512-92RegulationfordesignofinstrumenttubingandwiringHG20513-92Regulationfordesignofinstruments

24、ystemgrounding2DCSapplicationprincipleThefollowingprinciplesshallbetakenintocomprehensiveconsiderationintherespectofnecessityandfeasibilityofDCSapplicationbeforetheadoptionofDCSisdetermined.2.1Necessity2.1.1Intheeventoflongprocessflowandmanydetectionandcontrolcircuits,thefeaturesofDCSsuchasbigcapaci

25、tyandstrongfunctioncanbefullyutilizedthroughapplication.2.1.2Intheeventofcomplexprocesscontrolplan,manyseniorcontrolsystemsandhighsecurityandreliabilityrequirements,theapplicationofconventionalanaloginstrumentscanhardlymeetthetechnicaloperationrequirements.2.1.3Intheeventofhighrequirementsforoperati

26、onmanagementfunctions,suchasprintingofoperationandcross-limitalarmdataaswellasexecutionofcostaccountingandtechnicaleconomicindexanalysisreportforms.2.1.4TheadoptionofDCScanhelptoimproveproductionefficiencyandproductquality.2.2Feasibility2.2.1Sophisticatedproductiontechnologyandrichdesignexperiencewi

27、llhelpDCStocomeintooperation.2.2.2TheenduserofDCShasastrongtechnicalforceandcertainoperation,maintenanceandmanagementcapabilities.2.2.3Incomparisonwithconventionalanaloginstruments,thetechnicaleconomicindexoftheinvestmentforDCSisreasonable.Theenduserhastheabilitytoinvestfunds.3BasicfunctionsofDCSDCS

28、hasavarietyoffunctions.Thereasonableandeffectiveimplementationofthefollowingfunctionsshallbeconsideredinthefirstplaceduringdesignselectionandsystemconfiguration.3.1ProcesscontrolfunctionInengineeringdesign,suchseniorcontrolfunctionsascascade,ratio,feedforward,overrideandpuredelaytimecompensationcanb

29、eappliedaccordingtotheactualrequirementsofprocessmonitoringinadditiontothebasicfeedbackcontrolfunctionandsequentialcontrolfunction.Moreover,anintegratedcontrolarithmeticformulacanbeestablishedwithvariousarithmeticunitstomeetmorecomplicatedcontrolrequirements.3.2OperatingfunctionCommonoperationstatio

30、ninwhichonlykeyboardisusedtorealizeproductionprocessoperationortheoperationstationinwhichkeyboard,ball(mouse)or(and)touchscreenareusedtorealizeproductionprocessoperationcanbeadoptedaccordingtotheoperationrequirementsandtheoperationmodeofthevariousDCSs.3.3DisplayfunctionSuchframesasgroupingdisplay,tr

31、enddisplayanddynamicprocessdisplayarearrangedwithreasonontheprincipleoffacilitatingobservationandoperationbasedongeneralpicturedisplay,groupingdisplay,singlepointdisplay,historytrenddisplay,alarmpointsummarydisplayanddynamicanalogprocessdisplayfunctionofDCS.Ifnecessary,thedisplayoperationfunctionofo

32、peningawindowontheflowframecanalsobeselected.3.4AlarmfunctionThesystemalarmfunctionofDCSshallbeabletoautomaticallydiagnosethemalfunctionsoccurredinoperationstation,on-sitecontrolstationorcommunicationsystemandsendoutalarmsignals.TheprocessalarmfunctionofDCSshallbeabletodetecttheabnormalstateofthepro

33、ductionprocessanddisplayalarmsignalontheCRTscreen.Forimportantalarmsignalsorsysteminterlocksignals,individualalarmpanelcanalsobeadopted(someDCSsdonothavethealarmpanelstructure).Ifnecessary,audioalarmdevicecanalsobeequipped.Flashalarminstalledonauxiliaryoperationdeskcanbeadoptedasrequired.3.5Tablinga

34、ndprintingfunctionReportformprinterandreal-timealarmprintershallbeselectedrespectively.Reportformprinting:Printingcantakeplaceinrealtimeaccordingtotheformat,contentandprintingperiodofreportformspecifiedbytheenduser,oratanymomentasrequired.Alarmprinting:Thetagnumber,timeandalarmoperatingconditionofal

35、lthealarmpointsshallbeprintedinrealtime.3.6InformationmanagementfunctionExternalmemory(suchasdisk,tapedrive)isadoptedtosaveimportantinformationaccordingtotherequirementsofprocessoperationandmanagement.Thetypeandcapacityofexternalmemorycanbedeterminedaccordingtotheamountofinformationtobesaved,thesavi

36、ngdurationandtheenoughmarginstobeleft.3.7CommunicationfunctionwithuppercomputerandPLCDCScanbeaskedtocommunicateinrealtimewithuppersupervisorycontrolcomputertoperformoptimizationcontrolandproductionmanagementfunction,orcommunicatewiththeprogrammablelogiccontrollertoperformcomplexsequentialcontrolands

37、ignalinterlockfunctionasrequired.IftheDCSandtheuppercomputerarenotconfiguredatthesametime,DCScanberequiredtobeequippedwiththecommunicationinterfacewiththeuppercomputer.3.8SystemconfigurationfunctionTheDCSwithofflineandonlinesystemconfigurationfunctionsshallbeadopted.Thesystemconfigurationfunctionsha

38、llincludeconfiguration,generationandmodificationofoperationstationmonitorandcontrolstationcontrolfunction.4BasicstructureofDCSDCSmainlyconsistsofthreeparts,operationstation,controlstationandcommunicationsystem.Thefollowingitemsshallbeconsideredinthefirstplaceduringdesignandselection.4.1Operationstat

39、ion4.1.119orabovecolorcathode-raytubedisplay(hereinafterreferredtoasCRT)withoperationalkeyboardshallbeadoptedtoprovidedtheoperator,engineerandDCSmaintenancepersonnelwithdifferentmonitoringandoperatingfunction.Suchfactorsasthescaleofdetectionandcontrolsystem,theactualoperatingandmonitoringrequirement

40、sandtheredundancyshallbetakenintoconsiderationduringconfigurationofthenumberofCRTwithkeyboard(hereinafterreferredtoas“manmachineinterface”).Generally,theconfigurationofmanmachineinterfacecanbeselectedaccordingtothefollowingranges.Twosetscanbeequippedfor50-setandbelowcontrolsystem.Twotofoursetscanbee

41、quippedfor50-to-100-setcontrolsystem.Fourtofivesetscanbeequippedfor100-to-150-setcontrolsystem.Fivetosevensetscanbeequippedfor150-to-200-setcontrolsystem.Aproperamountofmanmachineinterfacescanbeequippedfor200-setandabovecontrolsystemaccordingtotheoperationfeatureoftheprocessunit.4.1.2Diskdrive(inclu

42、dingfloppydiskandharddisk)orCDdriveshallbeconfiguredtobeusedforsystemconfiguration,generationanddownloadaswellassavingprogramsanddata.Tapedrivecanbeequippedifnecessary.4.1.3Reportformprinterandalarmprintershallbeconfiguredrespectively.4.1.4Colorcopierorcolorlaserprintercanbeadoptedifrequired.4.1.5Mu

43、lti-pentrendrecordercanbeadoptedifrequired.4.1.6Backupmanualoperatorcanbeadoptedifrequired.4.1.7Auxiliarycontroldeskcanbeconfiguredifrequired.Therecorder,manualoperator,flashalarmandthecontrolswitchofmachinepumpandmotorvalveaswellastheinterlockshut-offswitchcanbeinstalledonthisdesk.4.2Controlstation

44、(processinterfaceunit,controlunitanddatacollectionunit)4.2.1ProcessinterfaceunitThetypeofinputandoutputsignals:(1)Analoginput/outputsignalforcontrol4-20mA.DC(2)Analoginput/outputsignalfordetection4-20mA.DC(3)ThermocoupleinputsignalThethermocoupleshallbeinconformitywithIECstandard.(4)Thermalresistanc

45、einputsignalThree-wiresystemisadopted.ThethermalresistanceshallbeinconformitywithIECstandard.(5)MillivoltorvoltageinputsignalThesignalrangeshallmeettherequirementsofthemachinemodel.(6)Digitalinput/outputsignalNormallyopen(ornormallyclosed)contactisadopted.Normally,itshallbepassivecontact(thecapacity

46、ofthecontactshallmeettherequirementsofthemachinemodel).(7)PulseinputsignalThefrequencyrangeis0-6kHz.Theinterfaceunitandon-sitetransmittershallbecapableofadoptingtwo-wire(powersupply,signalcollection)connectionandreceivingactiveinputsignals(suchastheoutputsignalofanalyzer,theoutputsignalofthevibratio

47、nmeasurerofcompressor).Whenthesignalsourceissituatedinanexplosion-proofarea,explosionprotectionmeasuresshallbetakenaccordingtotheexplosion-proofgraderequirement.Forexample,explosionproofbarriercanbeinstalledinfrontofthesitesideofinput/outputcardinsertion.4.2.2ControlunitThestructureandfunctionofthec

48、ontrollerareasfollows:(1)Thecontrollershallbaseonmicroprocessor;(2)Theoutputshallbemaintainedincaseoffailureofthecontroller(3)Besidesthefeedbackcontrolfunction,thecontrollershallbeabletoperformcomplicatedcalculationandcontrolfunctionbasedonstandardarithmeticformulaorusersarithmeticformula.Thecontrol

49、lershouldhaveself-tuningfunctionforPIDadjustingparameter.Whenbackupcontrollerhasbeenequipped,automaticnon-disturbanceswitchbetweenthecontrollerandthebackupcontrollershallberealized.4.2.3DatacollectionunitWhenDCSisequippedwithdatacollectionunit,theinputsignalsnotforcontroluseshallbeconnectedtothedata

50、collectionunitasmuchaspossible.See4.2.1forthetypesofinputsignalandtheexplosionproofrequirement.Thedatacollectionunitshallhavecalculation,alarm,sequentialcontrolandinputindicationfunction.4.3Communicationbus4.3.1Theinterfacecontrolequipmentofthecommunicationbusshallbedoublyconfigured.4.3.2Thecommunic

51、ationbusshallbeopentoensurethatthesystemequipmentsofDCScommunicatewitheachotheronthesamelevel.4.3.3Thecommunicationrateshallbeatleast1mb/s.4.3.4Thecommunicationbusshallhave50%backuploadcapacity.4.4ComputerinterfaceofDCS4.4.1Ifrequired,externalconnectionwithuppermonitorormanagershallberealizedthrough

52、internalcommunicationorstandardcommunicationinterface(suchasRS232).4.4.2Ifrequired,externalconnectionwithrelevantsystems(suchasPLC,chromatographicinstrument,etc.)shallberealizedbymeansofstandardcommunicationinterface(suchasRS232).4.5Systemconfigurationstation(engineerstation)4.5.1Whenspecialsystemco

53、nfigurationstation(engineerstation)isrequiredduringsystemconfigurationofDCS,systemconfigurationstation(engineerstation)shallbeconfigured.4.5.2Systemconfigurationstation(engineerstation)shallbecapableofofflineconfigurationandonlineconfiguration.Itshallbeprovidedwithallthefunctionsofoperationstationan

54、dcapableofbeingusedforsoftwaredevelopment.4.5.3Onlyonesystemconfigurationstation(engineerstation)isrequiredforonesetofDCS(includingseveraloperationstationsandcontrolstations).5PowersupplyofDCS5.1ExternalpowersupplyofDCS5.1.1TheelectricityofDCSshallbeprovidedbyUninterruptedPowerSupply(UPS).5.1.2Thepo

55、wersupplyofDCSshallconformtothespecificationswithregardtoDCSpowersupplyintheRegulationforDesignofInstrumentPowerSupplySystem(HG20509-92).ThequalityofthepowersupplyshallmeettherequirementsofcontinuousnormaloperationofDCS.5.1.3UPSshallbeprovidedwithnoncorrosivehighperformancebattery,ofwhichthecapacity

56、shouldsupport15-30minbackupusebasedonthescaleofDCS.5.2InternalpowersupplyofDCS5.2.1RedundancypowersupplyunitshallbeprovidedinsideDCS.5.2.2Thecapacityofeachpowersupplyunitshallnotbelessthan125%oftheactualmaximumload.5.2.3Alarmdisplayandcontactoutputshallbeprovidedincaseoflowvoltageofthepowersupplyuni

57、t.6ReliabilityofDCS6.1Redundancyrequirement6.1.1RedundancyconfigurationshallbeadoptedfortheoperationstationandcommunicationbusofDCS.ThesupplierofDCS(includingDCSmanufacturerandwholesetsupplyingdepartment,thesamebelow)shallguarantee20%sparecapacityoftheoperationstationandcommunicationbus.6.1.2Thesupp

58、lierofDCSshallguarantee10%-15%sparecapacityoftheI/OcardofDCSaswellas10%cardinstallationspaceand10%spareterminalsinthemachinecabinet.6.1.3Theredundancyofthecontrollercanbeconfiguredbytheuserpursuanttothefollowingprinciples:Importantcontrolcircuit:1:1Lessimportantcontrolcircuit:n:1(nistheactualnumbero

59、fcircuits)6.1.4Fortheinputofimportantdetectionsignals,theusercanadoptdualinputcard.6.2Qualityrequirementsforhardware6.2.1Themeantimebetweenfailures(MTBF)andthemeantimetorepair(MTTR)ofDCSshallbewithinthepermissiblerange.6.2.2TheaccuracyofanalogI/Ocardshallnobelowerthan0.1%.6.2.3TheDCSswithISO9001qual

60、ityassurancecertificateandachievementsofcomingintooperationinthepetrochemicalfieldshallbeadoptedasmuchaspossible.6.3InterferenceImmunityDCSdevicesshallhavetheabilityofresistingtheinfluenceofradioelectromagneticfield.6.4ExpansionofthesystemItshallbepossibletoexpandthesystemasrequiredwithoutinterrupti