基于柔性SCADA的电网复杂故障诊断方法的研究

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1、华北电力大学（保定）博士学位论文基于柔性SCADA的电网复杂故障诊断方法的研究姓名：杨海晶申请学位级别：博士专业：电力系统及其自动化指导教师：杨以涵;刘文颖20090501华北电力大学博士学位论文摘要AbstractTheissueoffaultdiagnosisofpowersystemisakindofresearchthatbasedonfaultcomprehensiveinformationandKnowledge-BasedSystemormodel，usingkindofdiagnosismechanismtodeterminefaultequipmentsorre

2、ason,atthesametimeappraisingtheactionsofprotectingdevices，automaticsecuritydevicesandothersuchasautomaticmonitoringandcontrollingequipments．Atpresent，thefaultdiagnosismethodsstillhavesomeproblemsinoverallsituationandinpractical．Therearethreemainreasons．First,theinformationisincomplete．Second，

3、theinformationnoiseinterferenceistoolarge．Third，therobustnessofdiagnosticistoopoorwhiletheinformationisincomplete．Tothisend，thepaperresearchaboutcomplexfaultdiagnosismethodbasedontheflexibleSCADAinpowersystem．AflexibleSCADAsystemthatinformationCanexchangeisputforward．Inthealarminformationproc

4、essing，intelligentalarmsystemisdeveloped．Afterthat，Petrinetsfaultdiagnosismodelbasedonforwardandbackwardreasoningisputforward，combiningthefeaturesPetrinetsandexpertsystem．ThefaultinformationanddiagnosticresultsisverifiedbyusingWAMSinformation．Firstofall，thepaperdidadeepresearchtocompletethein

5、formationandraisedtocreatetheflexibleSCADAsystembasedonwideareanetwork，whichCanclassifyanduploadaccordingtoimportanceoffaultinformation,havinginitiativeandwaitingtwopatternsatthesametime，inordertoprovideaflexibleandeffectiveplatformofdataexchangeandfunctionscoordinationforfaultdiagnosis．Thefl

6、exibleSCADAsystemisnolongerafixedpoint—to-pointone—waypathofinformationexchange，butthenetworkCanachieveanytwo(ormore)nodesofinformationexchangeintwo·way，whichCanreflectintelligenceofinformationexchangebetweenmaster-stationandthesub—stations．ItisthedevelopmentandexpansionoftraditionalSCADA，exp

7、andingthesystem’Sdatasourcesforthefaultdiagnosismodel．Secondly，astherearealotofnoiseproblemsofwarningmessagesafterlarge-areacomplexfaultinpowersystem，informationprocessingandintelligentalarmwasstudiedinthispaper．Noisesofreal．timealarminformat