基于行波法的輸電線路故障測(cè)距方法的研究與實(shí)現(xiàn).pdf

1、東北農(nóng)業(yè)大學(xué)碩士學(xué)位論文基于行波法的輸電線路故障測(cè)距方法的研究與實(shí)現(xiàn)姓名：桑亞平申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：農(nóng)業(yè)電氣化與自動(dòng)化指導(dǎo)教師：趙玉林20070620RESEARCHANDIMPLEMENTATIoNoNFAUI』rLoCATIoNFoRPOWERTRANSMISSl0NLINESBYTRAVELINGⅥfAVEMETHoDAbstractWiththedevelopmentofpowernetworkintercoonection

2、thescaleofpowersystemisextendingthedemandsforsafetyoperationisincreasinglyhigherBecauseofwidedistributioncomplexterrainerraticweatherconditionsandlongtermexposuretonaturalenvironmentthetransmissionlinesgetoutoforderunavo

3、idablyAtp㈣nt，alltheexistingfaultlocationmethodsforHVtransmissionlines啪beclassifiedintotwomaintypes：faultanalyticallocationandtravelingwavefaultlocationBecauseaffectedbythetypeoflines，faultresistanceandtwosidessystems，fau

4、ltanalyticallocationhaslowerprecision；travelingwavelocationisnotwidelyusedbecauseofdifficultdetectionfortravelingwaveheadThelineinspectionisusedtofindfaultbutitisnotgood，becauseitwastestime，laborandresolucz，especiallyiti

5、sdifficulttofindfaultpointforinstantaneousfaultlikeflashoverThereforeweneedtofindamethodtofindfaultpointquicklyandexactlyThepapersystematicallyanalyzesexistingdomesticandforeignmethodsforfaultlocationoftransmissionline，a

6、ndinfinallyweadoptedthetravelingwavefaultlocationbasedonsingleendtealizefaultlocationThewholedeviceoffaultlocationiSdesignedwhichincludetheheadoftravelingwavedetectioncircuitsignalconditioningcimuitanddataacquisitionbloc

7、kandSOonThepapersystematicallyanalyzesthepropagationprocessofthetransienttravelingwaveinthepowersystemWavelettransformWasadoptedtoresolvethekeyproblemintravelingwavefaultlocationbasedonsingleendtravelingwaveheadwithdrawi

8、ngTheexperimentalresultsshowthattheprecisionofwavewithdrewhasbeengreatlyimprovedThedigitalsignalprocesstechnologyisappliedintheprojectItisanewtechniquethatdevelopsrapidlyandbeusedwidelyTheTMS320LF2407datasignalprocessoro

9、fTICompanyisusedtomeetthedemandsofdigitalprocessingIftransmissionlineocCUln3faultstartssystem。andmeasuresthefaultpointlocation，thentransmitstheacquiredfaultpointdatatoPCbyRS232serialportThesubordinatecomputersoftwareispr

10、ogrammedbyassemblelanguageandthehostcomputersofivareisprogrammedbyVisualBasic60ThehostcomputerreceivesdatafromDSPandStoresitindatabaseandthefaultpointinformationisanalyzedconvenientlybythedesigneduserinteffaceInordertove