Thesis - New methodology for transmission line relay testing

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1、NEWMETHODOLOGYFORTRANSMISSIONLINERELAYTESTINGANDEVALUATIONUSINGADVANCEDTOOLSAThesisbyDRAGANRISTANOVICSubmittedtotheOfficeofGraduateStudiesofTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofMASTEROFSCIENCEDecember2003MajorSubject:ElectricalEngineeringNEWMETHODOLOGYFORTRANSMISSI

2、ONLINERELAYTESTINGANDEVALUATIONUSINGADVANCEDTOOLSAThesisbyDRAGANRISTANOVICSubmittedtoTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofMASTEROFSCIENCEApprovedastostyleandcontentby:____________________________________________________________________MladenKezunovicAliAbur(Chairof

3、Committee)(Member)____________________________________________________________________ZixiangXiongWilliamM.Lively(Member)(Member)__________________________________ChananSingh(HeadofDepartment)December2003MajorSubject:ElectricalEngineeringiiiABSTRACTNewMethodologyforTransmissionLineRelayTestingand

4、EvaluationUsingAdvancedTools.(December2003)DraganRistanovic,B.S.,UniversityofBelgrade,YugoslaviaChairofAdvisoryCommittee:Dr.MladenKezunovicProtectiverelaysareimportantpartsofthepowersystem.Theprotectionguardsvaluableequipment,andprotectiverelaysplayavitalroleinperformingthetask.Therelaydetectsfau

5、ltconditionswithinanassignedarea,opensandclosesoutputcontactstocausetheoperationofotherdevicesunderitscontrol.Therelayactstooperatetheappropriatecircuitbreakerstopreventdamagetopersonnelandproperty.Toensureconsistentreliabilityandproperoperation,protectiverelayequipmentmustbeevaluatedandtested.Th

6、eimportanceoftherelayevaluationissueislinkedtocapabilitytotesttherelaysandrelayingsystemsusingveryaccuratewaveformrepresentationofafaultevent.Thepurposeoftestingprotectiverelaysistoensurecorrectoperationoftherelayforallpossiblepowersystemconditionsanddisturbances.Tofulfillthispurpose,relaytesting

7、invaryingnetworkconfigurationsandwithdifferentfaulttypesisrequired.Thereareavarietyofoptionsthathavedifferentperformancepotentialsandimplementationconstraints.Useofdigitalsimulatorstotestprotectiverelayshasproventobean