Значење
<п>Thedatacollectionsystemincludes:visualreportdefinition,auditrelationshipdefinition,reportapprovalandrelease,datafilling,datapreprocessing,datareview,comprehensivequerystatistics,etc.functionalmodule.Throughthenetworkinganddigitizationofinformationcollection,thecoverageofdatacollectionwillbeexpanded,andthecomprehensiveness,timelinessandaccuracyoftheauditworkwillbeimproved;finally,themodernizationofrelatedbusinessworkmanagement,standardizationofprocedures,scientificdecision-making,andnetworkingofserviceswillberealized.
Увод
Уводtothecurrentsituation
<п>mycountry'ssmallandmediumcapacityunits(200MWandbelow)accountforaconsiderableproportionofthermalpowerplants,andthemonitoringmodeoftheseunitsissimulationThecontrolsystemisadataacquisitionsystembasedonconventionalinstruments.Thiskindofmonitoringmodehasdisadvantagessuchasheavymaintenanceworkloadandnoreliablehistoricalrecords.Inaddition,conventionalanaloginstrumentshavealsoenteredaperiodofagingandelimination,thereliabilityoftheequipmenthasbeensignificantlyreduced,andthesparepartsofsomeinstrumentscannotbeguaranteed.Therefore,thetechnicaltransformationofthemonitoringsystemofsmallandmedium-sizedunitsisimperative.Combiningmycountry’snationalconditionsanddrawinglessonsfromdomesticsimilarsystemdevelopmentexperience,asetofeconomicalandpracticalFDC-Ⅱdistributedpowerplantoperationreal-timedatamonitoringsystemhasbeendeveloped,whichcanbeusedfortechnicaltransformationofsmallandmedium-sizedunits,aswellassubstations,powersupplybureaus,etc.Electricityproductionandmanagementdepartments.Thesystemhasbeenputintoactualoperationina150MWthermalpowerplantinShandongProvince.
Фунцтионинтродуцтион
<п>Thequalityofdomesticthermalcontroldevicesandthecontrollabilityofmainandauxiliaryunitsarenotsatisfactory,andtherearesomeproblemsindesign,installation,commissioning,andoperationlevel.Inviewofthissituation,theFDC-Ⅱdistributedpowerplantoperationreal-timedatamonitoringsystemisdesigned.Itisacomputermonitoringsystemwithonlymonitoringfunctionsbutnocontrolfunctions,thatis,adataacquisitionsystem-DAS.<п>Thepowerplantoperatingdatathatthissystemcancollectincludeselectricalparametersandnon-electricalparameters.Amongthem,electricalparametersmainlyincludeanalogquantitiessuchascurrent,voltage,power,andfrequency,switchquantitiessuchascircuitbreakerstatus,isolatingswitchposition,relayprotectionactionsignals,andpulsequantitiesthatrepresentelectricaldegrees.Therearemanytypesofnon-electricalparameters.Itcancollectvarioustemperature,pressure,flowandotherthermalsignalsintheoperationofthermalpowerplants,aswellaswaterlevel,flowrate,flowandotherhydraulicsignalsinhydropowerplants,andcanalsocollectOthersignalssuchasthestateoftheinsulatingmediumandthemeteorologicalenvironment.<п>ThesystemalsoincludesbackgroundprocessingsoftwaredevelopedwithVisualC++,whichmainlyincludesfunctionssuchasdataprocessing,databasemanagement,real-timemonitoring,exceptionhandling,statisticalcalculationandreporting,performanceanalysisandoperationguidance.
Тип система
Врста опреме
<п>referstotheprocessofautomaticallycollectinginformationfromanaloganddigitalunitsundertestsuchassensorsandotherequipmentundertest.Thedataacquisitionsystemisacombinationofcomputer-basedmeasurementsoftwareandhardwareproductstorealizeaflexible,user-definedmeasurementsystem.Forexample,barcodemachines,scanners,etc.arealldatacollectiontools(systems).
Нетворкцласс
<п>Akindofinformationtoolusedtocollectthecontentsofwebpages,forums,etc.directlyinthedatabaseorpublishtothenetwork.Theoriginalwebpagecanbeautomaticallycollectedaccordingtotherulessetbytheuser,thecontentneededintheformatwebpagecanbeobtained,andthedatacanalsobeprocessed.<п>
Систембацкгроунд
<п>Formostmanufacturingenterprises,theautomaticdatacollectionofmeasuringinstrumentshasalwaysbeenanannoyingthing.EveniftheinstrumentalreadyhasRS232/485interfaces,itisstillUsingthemethodofmeasuringwhilemanuallyrecordingtopaper,andfinallyinputtingittothePCforprocessing,notonlyisheavywork,butalsocannotguaranteetheaccuracyofthedata.Oftenthedataobtainedbythemanagerisalreadyoneortwodaysbehindthedata;Foron-sitebadproductinformationandrelatedoutputdata,howtoachievehigh-efficiency,concise,andreal-timedatacollectionisevenmoredifficult.
Главне карактеристике
<п>Систем има следеће карактеристике:<п>a.Thedatacollectionismoreversatile.Notonlycancollectelectricalquantities,butalsonon-electricalquantities.TheelectricalparametersarecollectedbyACdiscretesampling,andthenon-electricparametersarecollectedbyrelaysurvey.Thesignalprocessingisadjustedbythehigh-precisionisolationoperationalamplifierAD202JY,whichhasgoodlinearityandhighprecision.<п>b.Theentiresystemadoptsadistributedstructure,andbothsoftwareandhardwareadoptamodulardesign.Thedataacquisitionpartadoptstheself-developedRS-485networkwithopticalisolation,whichhashighcommunicationefficiency,goodsafetyandsimplestructure.Thebackgroundsystemcanformdistributednetworkssuchas485network,NovellnetworkandWindowsNTnetworkaccordingtotheactualsizeandrequirementsofthemonitoredsystem.Becausethesoftwareandhardwarearedistributedandmodularized,itiseasytoupgradeandmaintainthesystemandformdifferentsystemsaccordingtoneeds.<п>c.DataprocessingadoptsVisualC++languageprogrammingonWindowsNTplatform,whichhasstrongprocessingability,fastspeed,friendlyinterface,andcanrealizenetworkdatasharing.<п>d.Theentiresystemisself-developed,inlinewithmycountry'snationalconditions.Thechangestotheoriginalsystemofthepowerplantaresmall,andthesystemcostisrelativelylow,whichismoresuitableforthetechnicaltransformationneedsofsmallandmedium-sizedpowerplants.
Главне функције
<п>·Real-timecollectionofoutputdatafromtheproductionlineorthenumberofdefectiveproducts,orthetypeoffailureoftheproductionline(suchaslinestoppage,lackofmaterial,quality),andtransmissionTothedatabasesystem;<п>·Примање информација из базе података: као што су информације о плану производње, информације о материјалу итд.;<п>·Transferthenameandquantityinformationofdefectiveproductsattheinspectionstation;<п>p><п>·Connectthedetectioninstrumenttorealizethedigitizationofthedetectioninstrument.Thedataacquisitioninstrumentautomaticallyobtainsthemeasurementdatafromthemeasurementinstrument,records,analyzesandcalculates,formsthecorrespondingvariousgraphics,andautomaticallyjudgesthemeasurementresults,suchasinthemechanicalRunoutmeasurementofprocessedparts,drawingoftensileforcecurveoftensionmeter,etc.;
Маинекуипмент
<п>·EquippedwithRS232andRS485serialports,multipletestinginstrumentscanbeconnectedtorealizeautomaticdatacollection;<п>·EquippedwithaUSBinterface,convenientfordataoutput;<п>·EquippedwithRJ45interface,canbeconnectedtothenetworkthroughanetworkcable;<п>·EquippedwithVGAvideooutputandaudiooutputInterface;<п>·Уграђени ВИФИ модул, који се може бежично повезати да би се олакшало умрежавање на локацији;<п>·Макимумсуппортфор32Гдатасторагеспаце;<п>·Опрема 4,3-инчни екран осетљив на додир, једноставан за руковање;<п>·UserscanobtaindatafromanyPCinthenetworkthroughtheinterface,whichisconvenientforsecondarydevelopment;<п>·Опремљен са 4,3-инчним екраном осетљивим на додир, једноставан за руковање;<п>·Removablemeasurement,real-timedatatransmission,alsocanuploaddatathroughthenetworkafterthetestiscompleted;<п>·Thecontinuousworkingtimeofthepowersupplyis6hours,andthestandbytimeisupto10days;<п>Productionsitedatacollectionisaveryimportantlinkinthequalityprocess.Agooddatacollectionplancanfreequalitymanagementpersonnelfromtheheavyworkofprocessingdataandhavemoretimetosolvetheactualproblem.Atthesametime,real-timedatacollectionalsoenablesthesystemtotrulyrealizereal-timemonitoring,findproblemsasearlyaspossible,andavoidgreaterlosses.
