HGT20573-1995分散型控制系统复习过程.doc

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1、Good is good, but better carries it.精益求精，善益求善。HGT20573-1995分散型控制系统-HGUDCTRADESTANDARDOFTHEPEOPLESREPUBLICOFCHINA中华人民共和国行业标准HG/T20573-95CodeforDistributedControlSystemEngineeringDesign分散型控制系统工程设计规定IssuedonAugust28,1995ImplementonNovember1,1995MinistryofChemicalIndustryofThePeoplesRepublicofChinaDocum

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

3、controlsystemengineeringdesignconstitutedbyChinaChengdaChemicalEngineeringCo.,Ltd.undertheorganizationoftheCentralStationofAutomationDesignTechnologyofourministryhasbeenapprovedtobevoluntaryprofessionalstandard;thenumberisHG/T20573-95.ItwillenterintoforcefromNov1,1995.Thisstandardisundertheadministr

4、ationoftheCentralStationofAutomationDesignTechnologyoftheministryandwillbepublishedandissuedunderthechargeoftheCenterforEngineeringConstructionStandardCompilationoftheministry.MinistryofChemicalIndustryAugust28,1995TRADESTANDARDOFTHEPEOPLESREPUBLICOFCHINA中华人民共和国行业标准CodefordistributedcontrolsystemEng

5、ineeringdesign分散型控制系统工程设计规定HG/T20573-95ChiefEditingorganization:ChinaChengdachemicalengineeringCo.,Ltd.Approvaldepartment:MinistryofChemicalIndustryImplementationdate:November1,1995CenterforEngineeringConstructionStandardCompilation,MinistryofChemicalIndustry1995,BeijingContents1General51.1Purpose51

6、.2Scopeofapplication51.3Referencedstandardsandcodes52DCSapplicationprinciple62.1Necessity62.2Feasibility63BasicfunctionsofDCS73.1Processcontrolfunction73.2Operatingfunction73.3Displayfunction73.4Alarmfunction73.5Tablingandprintingfunction73.6Informationmanagementfunction73.7Communicationfunctionwith

7、uppercomputerandPLC83.8Systemconfigurationfunction84BasicstructureofDCS94.1Operationstation94.2Controlstation(processinterfaceunit,controlunitanddatacollectionunit)94.3Communicationbus104.4ComputerinterfaceofDCS104.5Systemconfigurationstation(engineerstation)105PowersupplyofDCS125.1Externalpowersupp

8、lyofDCS125.2InternalpowersupplyofDCS126ReliabilityofDCS136.1Redundancyrequirement136.2Qualityrequirementsforhardware136.3InterferenceImmunity136.4Expansionofthesystem136.5Maturityofsystemsoftware137Controlroom148Cablesandwires158.1Connectionmethod158.2Selectionofconductors158.3Layingofcablesandwires

9、158.4Wiringmethod159Electricgrounding169.1Protectivegrounding169.2Shieldedgrounding169.3Signalgrounding169.4Intrinsicsafetygrounding169.5Specialgrounding169.6Grounding,executionmaterialandinstallation1610Tasksofbasicdesignandengineeringdesign1710.1Basicdesignstage1710.2Engineeringdesignstage1711DCSa

10、pplicationconfiguration1911.1DCSsupplierconfiguration1911.2DCSuserconfiguration1912Inspection,installationandcommissioningofDCS2012.1InspectionofDCS2012.2Installationandcommissioning2013CompilationofDCStechnicalspecification2113.1Thefunctionoftechnicalspecification2113.2Compilationtimeoftechnicalspe

11、cification2113.3Maincontentsoftechnicalspecification21AppendixADCSengineeringdesignprocedure23AppendixBOutlineforCompilationofDCSTechnicalSpecification27Compilationcomments351General1.1PurposeThiscodeisatechnicalspecificationconstitutedfortheapplicationofdistributedcontrolsystem(hereinafterreferredt

12、oasDCS)inchemicalautomationengineeringdesigntohelpthedesignerstoadoptDCScorrectlyandreasonablyandfullyrealizethesuperiority,practicabilityandreliabilityofDCS.1.2ScopeofapplicationThiscodeappliestothefollowingworkingscopeintheDCSengineeringdesign:1.2.1Investigatetheexecutiveplanofprocessmonitoringsys

13、tem;1.2.2WorkoutthepreliminaryconfigurationofDCShardwaresystem;1.2.3CompiletheDCStechnicalspecification;1.2.4AssessthequotationforDCS;1.2.5SubmittheexternaldesignconditionsofDCSinstallationandoperation;1.2.6Completethetechnicaldocumentsrequiredbywork,suchasDCSapplicationconfiguration.1.3Referencedst

14、andardsandcodesZBN10008-89TerminologiesofdistributedcontrolsystemISA-S5.1-1984GraphicalsymbolsandlettercodesforinstrumentsHG20505-92GraphicalsymbolsandlettercodesforprocessdetectionandcontrolsystemHG20508-92RegulationfordesignofcontrolroomHG20509-92RegulationfordesignofinstrumentpowersupplysystemHG2

15、0512-92RegulationfordesignofinstrumenttubingandwiringHG20513-92Regulationfordesignofinstrumentsystemgrounding2DCSapplicationprincipleThefollowingprinciplesshallbetakenintocomprehensiveconsiderationintherespectofnecessityandfeasibilityofDCSapplicationbeforetheadoptionofDCSisdetermined.2.1Necessity2.1

16、.1Intheeventoflongprocessflowandmanydetectionandcontrolcircuits,thefeaturesofDCSsuchasbigcapacityandstrongfunctioncanbefullyutilizedthroughapplication.2.1.2Intheeventofcomplexprocesscontrolplan,manyseniorcontrolsystemsandhighsecurityandreliabilityrequirements,theapplicationofconventionalanaloginstru

17、mentscanhardlymeetthetechnicaloperationrequirements.2.1.3Intheeventofhighrequirementsforoperationmanagementfunctions,suchasprintingofoperationandcross-limitalarmdataaswellasexecutionofcostaccountingandtechnicaleconomicindexanalysisreportforms.2.1.4TheadoptionofDCScanhelptoimproveproductionefficiency

18、andproductquality.2.2Feasibility2.2.1SophisticatedproductiontechnologyandrichdesignexperiencewillhelpDCStocomeintooperation.2.2.2TheenduserofDCShasastrongtechnicalforceandcertainoperation,maintenanceandmanagementcapabilities.2.2.3Incomparisonwithconventionalanaloginstruments,thetechnicaleconomicinde

19、xoftheinvestmentforDCSisreasonable.Theenduserhastheabilitytoinvestfunds.3BasicfunctionsofDCSDCShasavarietyoffunctions.Thereasonableandeffectiveimplementationofthefollowingfunctionsshallbeconsideredinthefirstplaceduringdesignselectionandsystemconfiguration.3.1ProcesscontrolfunctionInengineeringdesign

20、,suchseniorcontrolfunctionsascascade,ratio,feedforward,overrideandpuredelaytimecompensationcanbeappliedaccordingtotheactualrequirementsofprocessmonitoringinadditiontothebasicfeedbackcontrolfunctionandsequentialcontrolfunction.Moreover,anintegratedcontrolarithmeticformulacanbeestablishedwithvariousar

21、ithmeticunitstomeetmorecomplicatedcontrolrequirements.3.2OperatingfunctionCommonoperationstationinwhichonlykeyboardisusedtorealizeproductionprocessoperationortheoperationstationinwhichkeyboard,ball(mouse)or(and)touchscreenareusedtorealizeproductionprocessoperationcanbeadoptedaccordingtotheoperationr

22、equirementsandtheoperationmodeofthevariousDCSs.3.3DisplayfunctionSuchframesasgroupingdisplay,trenddisplayanddynamicprocessdisplayarearrangedwithreasonontheprincipleoffacilitatingobservationandoperationbasedongeneralpicturedisplay,groupingdisplay,singlepointdisplay,historytrenddisplay,alarmpointsumma

23、rydisplayanddynamicanalogprocessdisplayfunctionofDCS.Ifnecessary,thedisplayoperationfunctionofopeningawindowontheflowframecanalsobeselected.3.4AlarmfunctionThesystemalarmfunctionofDCSshallbeabletoautomaticallydiagnosethemalfunctionsoccurredinoperationstation,on-sitecontrolstationorcommunicationsyste

24、mandsendoutalarmsignals.TheprocessalarmfunctionofDCSshallbeabletodetecttheabnormalstateoftheproductionprocessanddisplayalarmsignalontheCRTscreen.Forimportantalarmsignalsorsysteminterlocksignals,individualalarmpanelcanalsobeadopted(someDCSsdonothavethealarmpanelstructure).Ifnecessary,audioalarmdevice

25、canalsobeequipped.Flashalarminstalledonauxiliaryoperationdeskcanbeadoptedasrequired.3.5TablingandprintingfunctionReportformprinterandreal-timealarmprintershallbeselectedrespectively.Reportformprinting:Printingcantakeplaceinrealtimeaccordingtotheformat,contentandprintingperiodofreportformspecifiedbyt

26、heenduser,oratanymomentasrequired.Alarmprinting:Thetagnumber,timeandalarmoperatingconditionofallthealarmpointsshallbeprintedinrealtime.3.6InformationmanagementfunctionExternalmemory(suchasdisk,tapedrive)isadoptedtosaveimportantinformationaccordingtotherequirementsofprocessoperationandmanagement.Thet

27、ypeandcapacityofexternalmemorycanbedeterminedaccordingtotheamountofinformationtobesaved,thesavingdurationandtheenoughmarginstobeleft.3.7CommunicationfunctionwithuppercomputerandPLCDCScanbeaskedtocommunicateinrealtimewithuppersupervisorycontrolcomputertoperformoptimizationcontrolandproductionmanageme

28、ntfunction,orcommunicatewiththeprogrammablelogiccontrollertoperformcomplexsequentialcontrolandsignalinterlockfunctionasrequired.IftheDCSandtheuppercomputerarenotconfiguredatthesametime,DCScanberequiredtobeequippedwiththecommunicationinterfacewiththeuppercomputer.3.8SystemconfigurationfunctionTheDCSw

29、ithofflineandonlinesystemconfigurationfunctionsshallbeadopted.Thesystemconfigurationfunctionshallincludeconfiguration,generationandmodificationofoperationstationmonitorandcontrolstationcontrolfunction.4BasicstructureofDCSDCSmainlyconsistsofthreeparts,operationstation,controlstationandcommunicationsy

30、stem.Thefollowingitemsshallbeconsideredinthefirstplaceduringdesignandselection.4.1Operationstation4.1.119orabovecolorcathode-raytubedisplay(hereinafterreferredtoasCRT)withoperationalkeyboardshallbeadoptedtoprovidedtheoperator,engineerandDCSmaintenancepersonnelwithdifferentmonitoringandoperatingfunct

31、ion.Suchfactorsasthescaleofdetectionandcontrolsystem,theactualoperatingandmonitoringrequirementsandtheredundancyshallbetakenintoconsiderationduringconfigurationofthenumberofCRTwithkeyboard(hereinafterreferredtoas“manmachineinterface”).Generally,theconfigurationofmanmachineinterfacecanbeselectedaccor

32、dingtothefollowingranges.4.1.1.1Twosetscanbeequippedfor50-setandbelowcontrolsystem.4.1.1.2Twotofoursetscanbeequippedfor50-to-100-setcontrolsystem.4.1.1.3Fourtofivesetscanbeequippedfor100-to-150-setcontrolsystem.4.1.1.4Fivetosevensetscanbeequippedfor150-to-200-setcontrolsystem.4.1.1.5Aproperamountofm

33、anmachineinterfacescanbeequippedfor200-setandabovecontrolsystemaccordingtotheoperationfeatureoftheprocessunit.4.1.2Diskdrive(includingfloppydiskandharddisk)orCDdriveshallbeconfiguredtobeusedforsystemconfiguration,generationanddownloadaswellassavingprogramsanddata.Tapedrivecanbeequippedifnecessary.4.

34、1.3Reportformprinterandalarmprintershallbeconfiguredrespectively.4.1.4Colorcopierorcolorlaserprintercanbeadoptedifrequired.4.1.5Multi-pentrendrecordercanbeadoptedifrequired.4.1.6Backupmanualoperatorcanbeadoptedifrequired.4.1.7Auxiliarycontroldeskcanbeconfiguredifrequired.Therecorder,manualoperator,f

35、lashalarmandthecontrolswitchofmachinepumpandmotorvalveaswellastheinterlockshut-offswitchcanbeinstalledonthisdesk.4.2Controlstation(processinterfaceunit,controlunitanddatacollectionunit)4.2.1Processinterfaceunit4.2.1.1Thetypeofinputandoutputsignals:(1)Analoginput/outputsignalforcontrol4-20mA.DC(2)Ana

36、loginput/outputsignalfordetection4-20mA.DC(3)ThermocoupleinputsignalThethermocoupleshallbeinconformitywithIECstandard.(4)ThermalresistanceinputsignalThree-wiresystemisadopted.ThethermalresistanceshallbeinconformitywithIECstandard.(5)MillivoltorvoltageinputsignalThesignalrangeshallmeettherequirements

37、ofthemachinemodel.(6)Digitalinput/outputsignalNormallyopen(ornormallyclosed)contactisadopted.Normally,itshallbepassivecontact(thecapacityofthecontactshallmeettherequirementsofthemachinemodel).(7)PulseinputsignalThefrequencyrangeis0-6kHz.4.2.1.2Theinterfaceunitandon-sitetransmittershallbecapableofado

38、ptingtwo-wire(powersupply,signalcollection)connectionandreceivingactiveinputsignals(suchastheoutputsignalofanalyzer,theoutputsignalofthevibrationmeasurerofcompressor).4.2.1.3Whenthesignalsourceissituatedinanexplosion-proofarea,explosionprotectionmeasuresshallbetakenaccordingtotheexplosion-proofgrade

39、requirement.Forexample,explosionproofbarriercanbeinstalledinfrontofthesitesideofinput/outputcardinsertion.4.2.2Controlunit4.2.2.1Thestructureandfunctionofthecontrollerareasfollows:(1)Thecontrollershallbaseonmicroprocessor;(2)Theoutputshallbemaintainedincaseoffailureofthecontroller(3)Besidesthefeedba

40、ckcontrolfunction,thecontrollershallbeabletoperformcomplicatedcalculationandcontrolfunctionbasedonstandardarithmeticformulaorusersarithmeticformula.Thecontrollershouldhaveself-tuningfunctionforPIDadjustingparameter.4.2.2.2Whenbackupcontrollerhasbeenequipped,automaticnon-disturbanceswitchbetweentheco

41、ntrollerandthebackupcontrollershallberealized.4.2.3Datacollectionunit4.2.3.1WhenDCSisequippedwithdatacollectionunit,theinputsignalsnotforcontroluseshallbeconnectedtothedatacollectionunitasmuchaspossible.4.2.3.2See4.2.1forthetypesofinputsignalandtheexplosionproofrequirement.4.2.3.3Thedatacollectionun

42、itshallhavecalculation,alarm,sequentialcontrolandinputindicationfunction.4.3Communicationbus4.3.1Theinterfacecontrolequipmentofthecommunicationbusshallbedoublyconfigured.4.3.2ThecommunicationbusshallbeopentoensurethatthesystemequipmentsofDCScommunicatewitheachotheronthesamelevel.4.3.3Thecommunicatio

43、nrateshallbeatleast1mb/s.4.3.4Thecommunicationbusshallhave50%backuploadcapacity.4.4ComputerinterfaceofDCS4.4.1Ifrequired,externalconnectionwithuppermonitorormanagershallberealizedthroughinternalcommunicationorstandardcommunicationinterface(suchasRS232).4.4.2Ifrequired,externalconnectionwithrelevants

44、ystems(suchasPLC,chromatographicinstrument,etc.)shallberealizedbymeansofstandardcommunicationinterface(suchasRS232).4.5Systemconfigurationstation(engineerstation)4.5.1Whenspecialsystemconfigurationstation(engineerstation)isrequiredduringsystemconfigurationofDCS,systemconfigurationstation(engineersta

45、tion)shallbeconfigured.4.5.2Systemconfigurationstation(engineerstation)shallbecapableofofflineconfigurationandonlineconfiguration.Itshallbeprovidedwithallthefunctionsofoperationstationandcapableofbeingusedforsoftwaredevelopment.4.5.3Onlyonesystemconfigurationstation(engineerstation)isrequiredforones

46、etofDCS(includingseveraloperationstationsandcontrolstations).5PowersupplyofDCS5.1ExternalpowersupplyofDCS5.1.1TheelectricityofDCSshallbeprovidedbyUninterruptedPowerSupply(UPS).5.1.2ThepowersupplyofDCSshallconformtothespecificationswithregardtoDCSpowersupplyintheRegulationforDesignofInstrumentPowerSu

47、pplySystem(HG20509-92).ThequalityofthepowersupplyshallmeettherequirementsofcontinuousnormaloperationofDCS.5.1.3UPSshallbeprovidedwithnoncorrosivehighperformancebattery,ofwhichthecapacityshouldsupport15-30minbackupusebasedonthescaleofDCS.5.2InternalpowersupplyofDCS5.2.1RedundancypowersupplyunitshallbeprovidedinsideDCS.5.2.2Thecapacityofeachpowersupplyunitshallnotbelessthan125%oftheactualmaximumload.5.2.3Alarmdisplayandcontactoutputshallbeprovidedincaseoflowvoltageofthepowersupplyunit.6ReliabilityofDCS6.1Redundancyrequirement6.1.1Redundancyconfigurationshallbeadoptedfortheopera