高壓輸電線路的潛供電流特性與對策研究

1、分類號UDC碩士學位論文。巧9859主8高壓輸電線路的潛供電流特性與對策研究楊芳學科專業(yè)電力丕統(tǒng)區(qū)墓自動絲指導教師王巨主教援論文答辯日期2QQ生旦3旦學位授予日期答辯委員會主席粱型!述數量論文評閱人蘊至數援睦掛遠直縫工猩』垂AbstractSTUDlESlNCHARACTERlSTlCANDCOUNTERMEASUREOFTHESECONDARYARCCURRENTlNHIGHVOLTAGETRANMlSSIONLINEAbstract

2、Morethan90％faultsoccurredinpowersystemhighvoltagetransmissionlinesa∞singlephaseto—groundfaultsandmostlytemporarythesystemadoptthesinglepoleauto—reclosuretoeliminatethefaultsThesinglepoleautoreclosureisoneoftheeffectiveme

3、asurestoenhancethepowersystemstabilizationandthepowertransmissioncapabilitybutthepersistentcombustionofthesecondaryarcatfaultpointhinderthemeasurerealization，thereforeselfextinctionsmoothlyofthesecondaryarcisanecessaryco

4、nditionforsingle—phaseauto—reclosuresuccessfulForthisreasonweshouldtrytoreducetheparameters(secondaryarccurrentandrecoveryvoltage)Onhi曲voltagetransmissionline，thecurrentinfaultedphase，whichkeeponprovidedbycapacitivelycou

5、pledandinductivelycoupledbetweenfaultedphaseandnon—faultedphase，iscalledthesecondarccurrentafterthelinefaulthasbeenisolatedBecauseoftheselfextinctionspeedeoncemedwiththesecondaryarcparameters，thispaperutilizesPSCADsimula

6、tionsoftwaretoanalyzecapacitanceandinductanceunderinfluenceofdifferentconditionsandfactorsbyusingdifferentcompensationmodes，tocalculateparametervaluesItisnecessarytoestimatearc—quenchingconditionandchoosecorrespondingcom

7、pensationWithaugmentingpowergridtransmissioncapacitytheseriescompensationtechnologywillbeadoptedingeneraluseSeriescompensationchangesthecharacteristicoftheparameterdistributionevenlyoftheoriginaltransmissionlineItalsocha