供配电系统中英文对照外文翻译文献Word文件下载.docx
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供配电系统中英文对照外文翻译文献Word文件下载.docx
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POWERSUPPLYANDDISTRIBUTIONSYSTEMABSTRACT
Thebasicfunctionoftheelectricpowersystemistotransporttheelectricpowertowardscustomers.Thel0kVelectricdistributionnetisakeypointthatconnectsthepowersupplywiththeelectricityusingontheindustry,businessanddaily-life.Fortheelectricpower,allcostumersexpecttopaythelowest price for the highest reliability, but don'
t consider that it'
sself-contradictoryintheco-existenceofeconomyandreliable.Toimprovethereliabilityof thepowersupplynetwork,wemustincreasetheinvestmentcostofthenetworkconstructionBut,ifthecostthatimprovethereliabilityofthenetworkconstruction,buttheinvestmentonthiskindofconstructionwouldbeworthlessifthereducinglossisonthepower-offislessthantheincreasinginvestmentonimprovingthereliability.Thuswefindoutabalance
12
pointtomakethemosteconomic,betweentheinvestmentandthelossbycalculatingtheinvestmentonpowernetandthelossbroughtfrompower-off.
KEYWARDS:
powersupplyanddistribution,powerdistributionreliability,reactivecompensation,loaddistribution
TEXT
The revolution of electric power system has brought a new big roundconstruction,whichispushingthegreaterrevolutionofelectricpowertechniquealongwiththeapplicationofnewtechniqueandadvancedequipment.Especially,thecombinationoftheinformationtechniqueandelectricpowertechnique,togreatex-tent,hasimprovedreliabilityonelectricqualityandelectricsupply.Thetechnicaldevelopmentdecreasesthecostonelectricconstructionanddrivesinnovationofelectricnetwork.Onthebasisofnationalandinternatio-naladvancedelectricknowledge,thedissertationintroducestheresearchhotspotforpresentelectricpowersy-etemasfollowing.
Firstly, This dissertation introduces the building condition of distributionautomation(DA),andbringsforwardtwotypicalconstructionmodesonDAconstruction,integrativemodeandfissionmode.ItemphasizetheDAstructureundertheconditionofthefissionmodeandpresentsthesystemconfiguration,themainstationscheme,thefeederscheme,theoptimizedcommunicationschemeetc.,whichisforDAresearchreference.
Secondly,asforthe(DA)troublemeasurement,position,isolationandresume,Thisdissertationanalyzesthechangesofpressureandcurrentforlineproblem,getsmathequationbyeducingphaseshortcircuitandproblempositionundertheconditionofsingle-phaseandworksoutequationandseveralparametersU&
sI&
andeI&
tableonproblem.Itbringsoutoptimizedisolationandresumeplan,realizesautoisolationandnetworkreconstruction,reducesthepoweroffrangeandtimeandimprovesthereliabilityofelectricpowersupplythroughproblemself-diagnosesandself-analysis.Italsointroducessoftwareflowanduseforproblemjudgementandsetsamodelonnetworkreconstructionandcomputerflow.
Thirdly,electricitysystemstateisestimatedtobeoneofthekeytechniquesinDArealization.Thedissertationrecommendstheresolventofbadmeasurementdataandstructuremistakeonthegroundofdescribingstateestimateway.Italsoadvancesapracticaltestandjudgingwayontopologymistakeinstateestimateaboutbaddatatestandabnormityinstateestimateaswellastheproblemandeffectonbaddatafromstatemeasuretostateestimate.Asforrealtimemonitorandcontrolproblem,thedissertationintroducesanewwaytosolvethembyelectricitybreakandexceptionalanalysis,andthewayhasbeentestedinWeifangDA.
Fourthly,aboutthedifficultyforbuildingthemodelofloadforecasting,bigparameterscatterlimitandsomethingconcerned,thedissertationintroducessomeparameters,eg.weatherfactor,datetypeandsocialenvironmenteffectbasedonanalysisofroutineloadforecastingandmeans.Itpresentsthewayforelectricityloadforecastingfoundedonneuralnetwork(ANN),whichhasbeentestedit’svaliditybyexampleandmadetobegoodpracticaleffect.
Fifthly,concerningthelackofconcordantwaveonpreventingconcordantwaveandnon-powercompensationandnon-continuityoncompensation,thereisatopologystructureofPWMmaincircuitandnonpowertheoryonactivefilterthewavestechniqueandbuildsflatproofonthegroundofSaberDesignerandprovestobepractical.Meanwhile,itanalyzesanddesignsthewayofnon-powerneedofelectricnetworktre-ndsanddecreasinglinelosscombinedwithDA,whichhavebeentesteditsobjectiveeconomicbenefitthrou-ghcountingexample.
Sixthly,notonlydothedissertationdesignawayfoundedonthemagrginalelectricpricefittedtoourpresentnationalelectricpowermarketwithregardstofuturetrendsofelectricpowermarketinChinaandfairtradeunderthegovernmentsurveillance
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