水滴形态对输电线路导线电晕放电特性的影响

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1、重庆大学硕士学位论文II英文摘要ABSTRACTConductorcorona,whichwillresultintremendousnegativeimpacts,isoneofthosemajorfactorsthatshouldbetakenintoconsiderationduringthedesignandoperationprocedureoftransmissionlines.Sofar,extensivestudieshavebeenconductedonatmosphericparametersandelect

2、romagneticenvironmentchangescausedbyconductorcorona.However,noresearchhasfocusedonimprovingthecoronaoftransmissionlinesinrainyweather,alsothedeformationandtheprocessofwaterintheelectricfieldisnotclear.Becauseofthelowsurfaceenergyofhydrophobiccoatingsthatcanreducethen

3、umberofthewaterdropletsattachedonthecoatedmaterialsurface,amethodtoimprovetransmissionlinecoronainrainyweatherbyusingvarioushydrophobiccoatingsonthewireisproposedforthefirsttimeinthisstudy.Theresultsareexpectedtoimprovethecoronaoftransmissionlinesinrainyweatherandthe

4、dischargemechanismofwater,soitisofimportantacademicsignificanceandengineeringpracticalworthiness.ACcoronatesthasbeencarriedoutinthisarticlewhichisaimedtofigureoutthecoronacharacteristicsofthecoatedconductorwithwaterdropsadheredtoitssurfaceinsideasmallcoronacage.Thede

5、formationandtheprocessofwaterintheelectricfieldisattained.Theforcevibrationmechanismofwaterisanalyzed.Theelectricfielddistributionofcoatedconductorattachedwithwateriscalculated.Thefollowingconclusionsarefound:①Becauseoftherollangleofsuperhydrophobiccoatingwasextremel

6、ysmallandthesurfaceenergywasextremelylow,nodropletonthelowersurfaceoftheconductorcoveredwithsuperhydrophobiccoatingwasobserved.Thecoronadevelopmentofdryingwireandthesuperhydrophobiccoatingconductorwithwatersissimilar;itcanbedividedintotwostages:corona-freezoneandcond

7、uctorcoronazone.HowerverThecoronadevelopmentofdryingwireandthesuperhydrophobiccoatingconductorwithwatersisdifferent.a)Therearefewwatersattachedonitssurface,itcanbedividedintofourstages:corona-freezone,transientwaterdropletcoronazone,steadywaterdropletcoronazoneandcon

8、ductorcoronazone.b)itcanbedividedintothreestages:corona-freezone,transientwaterdropletcoronazoneandconductorcoronazonewhentheconduc