高压电晕电场放电特性的研究

20099()Sept.2009405JournalofInnerMongoliaUniversityVol.40No.5:1000-1638(2009)05-0600-05许　潇1,2,那　日1,2,杨　军1,2,刘俊杰1,2(1.,010021;2.,010021):-.--.:,,20mm,;20mm,.-,,-25mm,.:;;:TM89:A,,,,.,,14,,.,,--.-da;--,.1-1,-.030kV,10%A,Q-3V,,0.01mm,1.5mm,2.6mm,n=100,a4mm,432mm,-d060mm.1-Fig.1Sketchmapofcoronadischargeequipment:2009-06-09:(50767002);(200711020101):(1982),,,..:(1955),(),,.E-mail:[e-mail]22.1-d2.1.1-da=16mma=20mm,1kV,Ad=10,15,20,25,30mm,2,3.2a=16mmFig.2Current-voltagecharacteristicsofcoronadischargewithdifferentspacesofplateswhenneedlespacea=16mm3a=20mmFig.3Current-voltagecharacteristicsofcoronadischargewithdifferentspacesofplateswhenneedlespacea=20mm23:1)-5.2)-,.,,6,,,,,.,,,.-,,,.3)-,.,-d,,.2.1.2-da=24mm,-d=7,10,15,20,25,30mm,1kV,4.,d10mm,,,,,,,,,,.:,,=,Pmax=UmaxImax.,,.,,-,d6015,-;d,,-.-,,d-.4a=24mmFig.4Current-voltagecharacteristicsofcoronadischargewithdifferentspacesofplateswhenneedlespacea=24mm5-Fig.5Relationshipbetweenmaximaldischarge-powerandspaceofneedleandplate5,-d=25mm,Pmax,,,1kV,6,,-25mm,,-25mm.6-Fig.6Relationshipbetweeneffectivedischarge-powerandspaceofneedleandplate7-d=25mmFig.7Current-voltagecharacteristicsofcoronadischargewithdifferentspacesbetweenneedleswhentheneedle-platespaced=25mm2.2a2.2.1a-d=25mm,a=8mm,4mm,a=8,12,16,20,24,28,32mm,7.7:1).2),,.7:602()2009E=2U(r+2x)ln(r+2dr)r;U;x.,.3)a,,a,,,,.2.2.2a7,12kV13kV14kV15kVPa8.8Fig.8Relationshipbetweendischarge-powerfordifferentspacesbetweenneedles9-Fig.9Current-voltagecharacteristicsofelectrodesofamulti-needleplatefornegativecoronadischarge20mm,a=20mm,20mm,,,a,,,,,,a20mm.2.312mm,-30mm28mm,-25mm9.0kV,1kV,-,,,.,:,,.,,,,,10--Fig.10Current-voltagecharacteristicsbetweenelectrodesofamulti-needleplateandsingle-needleplatefornegativecoronadischarge,-.60352.4-,--:d,.10,d=30mm,6.5kV6kV;19kV,18kV,15kV.,,,,.3,,-.1),;-,,;,a,-d,-.2)d=25mm,,-25mm;,a20mm,,a=20mm,..:[1],,,.[J].中国基础科学,2004,6(4):2327.[2],,,.[J].电工技术学报,2004,19(9):4245.[3]NelsonDA,ZiaS,WhippleRL.Coronadischargeefectsonheattransferandpressuredropintubeflows[J].JournalofEnhancedHeatTransfer,2000,7(2):8195.[4],,,.[J].北京理工大学学报,2005,(25):2831.[5]RaizerYP.GasdischargePhysics[M].Berlin:Springer-Verlag,1991.349.(李国栋)AResearchonCharacteristicsofCoronaDischargeXUXiao1,2,NARi1,2,YANGJun1,2,LIUJun-jie1,2(1.KeyLaboratoryofIonBeamBioengineering,Hohhot010021,China;2.SchoolofPhysicalScienceandTechnology,InnerMongoliaUniversity,Hohhot010021,China)Abstract:Thecurrentcharacteristics,dischargeenergy,andoutputstabilityofcoronadischargeformulti-needleplatesareexperimentallyresearchedwiththechangeofspacingbetweenneedles,andspacingofneedleandplate.Thecurrent-voltagecharacteristicsofamulti-needleplateandasingle-needleplatefornegativecoronadischargearecompared.Experimentalresultsshowthattheneedle-tipspacingisbigger,thecoronacurrentisbigger.Whentheneedle-tipspacingisbiggerthan20mm,thecoronadischargeoutputgrowthbecomesslower,andwhentheneedle-tipspacingis20mm,thecoronadischargemayoutputastablehighpower.Thespacingofneedleandplateissmaller,thecoronacurrentisbigger.Whenthespacingofneedleandplateis25mm,thecoronadischargeoutputisbiggest.Keywords:coronadischarge;dischargeoutputpower;outputstability604()2009