HVDC換流站電磁騷擾統(tǒng)計特性及與抗擾度波形相關性的研究.pdf

1、華北電力大學（保定）碩士學位論文HVDC換流站電磁騷擾統(tǒng)計特性及與抗擾度波形相關性的研究姓名：高飛申請學位級別：碩士專業(yè)：電氣工程；電力系統(tǒng)及其自動化指導教師：張衛(wèi)東201103摘要IIAbstractInrecentyearsHVDCtransmissiontechnologyiswidelyusedinourcountrymemescholarsbegantostudyonelectromagiccompatibility.Conv

2、erterisrepresentativeofcomplexelectromagicenvironment.ThispapercontainsthreepartstoanalyzetransientelectromagicdisturbanceofHVDCconverterstations.Thefirstpartisthetheysectionofmathematicalstatistics.Mostoftheelectromagic

3、disturbancecausedbyswitchoperationduetoswitchoperationhasastrongromicityweneedtousestatisticalmethodstoanalysismeasureddataofelectromagicdisturbance.Befeappliedstatisticalmethodstodataprocessingweshouldtestthehypotheseso

4、fdata.Thispaperfirstlyintroducesseveraldifferentkindsofhypothesistestmethod.thenexpoundsthetraditionalstatisticsmethodBesselmethod.Becausethenumberofswitchoperatingislimitedelectromagicdisturbancedatahastheacteristicsofs

5、mallsamplesthispaperalsointroducestwosmallsamplestatisticalmethodselfhelpmethod(bootstrap)thestochasticweightedmethod.Bycomparingthesemethodsthetextchoosestochasticweightedmethodfthelatterstatisticalstudies.Thesecondpart

6、firstlyintroducesthedefinitionoftransientelectromagicdisturbancefundamentalacteristicparametersanalizethemeasurementdatathecalculatedresultswerelistedintablethenappliesstochasticweightedmethodtogetstatisticacteristicsoft

7、heelectromagicdisturbance.Accdingtotheresearchprocessthetextproviodanelectromagicharassmentanalysisinterface.Theinterfaceincludestwopartsbasicacteristicinterfacestatisticalanalysisinterface.Thebasicacteristicparametersof

8、electromagicdisturbanceitsprobabilitydistributionhistogramtimedomainfrequencydomainwavefmsthestatisticalacteristicshypothesisthefrequencydomainstatisticalenvelopecanbeobtainedthroughtheinterface.Thethirdpartofthearticlee

9、xpoundthedefinitionofsignalrelatedintroducestheautocrelationfunctioncrosscrelationfunction.Atpresentthereisnoexplicitstardfimmunitytestofthesecondaryequipmentinconverterstationwehavetoestimatetherelevancybetweenactualdis

10、turbanceacteristicsexistedstardinthebasisofmakingstatisticalanalysisofthemeasurementdatasoastomodifyaddexistedstarddevelopmesuitablestard.Keywds:electromagicdisturbance；convertstation；switchoperation；basicacteristic；stat