(参考资料)供配电系统英文文献.docx

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1、(参考资料)供配电系统英文文献PowerSupplyandDistributionSystemABSTRACT:Thebasicfunctionoftheelectricpowersystemistotransporttheelectricpowertowardscustomers.Thel0kVelectricdistributionnetisakeypointthatconnectsthepowersupplywiththeelectricityusingontheindustry,businessanddaily-life.Fortheelectricpower,allcostumers

2、expecttopaythelowestpriceforthehighestreliability,butdontconsiderthatitsself-contradictoryintheco-existenceofeconomyandreliable.Toimprovethereliabilityofthepowersupplynetwork,wemustincreasetheinvestmentcostofthenetworkconstructionBut,ifthecostthatimprovethereliabilityofthenetworkconstruction,butthei

3、nvestmentonthiskindofconstructionwouldbeworthlessifthereducinglossisonthepower-offislessthantheincreasinginvestmentonimprovingthereliability.Thuswefindoutabalancepointtomakethemosteconomic,betweentheinvestmentandthelossbycalculatingtheinvestmentonpowernetandthelossbroughtfrompower-off.KEYWORDS:power

4、supplyanddistribution,powerdistributionreliability，reactivecompensation,loaddistributionTherevolutionofelectricpowersystemhasbroughtanewbigroundconstruction,whichispushingthegreaterrevolutionofelectricpowertechniquealongwiththeapplicationofnewtechniqueandadvancedequipment.Especially,thecombinationof

5、theinformationtechniqueandelectricpowertechnique,togreatex-tent,hasimprovedreliabilityonelectricqualityandelectricsupply.Thetechnicaldevelopmentdecreasesthecostonelectricconstructionanddrivesinnovationofelectricnetwork.Onthebasisofnationalandinternatio-naladvancedelectricknowledge,thedissertationint

6、roducestheresearchhotspotforpresentelectricpowersy-etemasfollowing.Firstly,Thisdissertationintroducesthebuildingconditionofdistributionautomation(DA),andbringsforwardtwotypicalconstructionmodesonDAconstruction,integrativemodeandfissionmode.ItemphasizetheDAstructureundertheconditionofthefissionmodean

7、dpresentsthesystemconfiguration,themainstationscheme,thefeederscheme,theoptimizedcommunicationschemeetc.,whichisforDAresearchreference.Secondly,asforthe(DA)troublemeasurement,position,isolationandresume,Thisdissertationanalyzesthechangesofpressureandcurrentforlineproblem,getsmathequationbyeducingpha

8、seshortcircuitandproblempositionundertheconditionofsingle-phaseandworksoutequationandseveralparametersU&,sI&andeI&tableonproblem.Itbringsoutoptimizedisolationandresumeplan,realizesautoisolationandnetworkreconstruction,reducesthepoweroffrangeandtimeandimprovesthereliabilityofelectricpowersupplythroug

9、hproblemself-diagnosesandself-analysis.Italsointroducessoftwareflowanduseforproblemjudgementandsetsamodelonnetworkreconstructionandcomputerflow.Thirdly,electricitysystemstateisestimatedtobeoneofthekeytechniquesinDArealization.Thedissertationrecommendstheresolventofbadmeasurementdataandstructuremista

10、keonthegroundofdescribingstateestimateway.Italsoadvancesapracticaltestandjudgingwayontopologymistakeinstateestimateaboutbaddatatestandabnormityinstateestimateaswellastheproblemandeffectonbaddatafromstatemeasuretostateestimate.Asforrealtimemonitorandcontrolproblem,thedissertationintroducesanewwaytoso

11、lvethembyelectricitybreakandexceptionalanalysis,andthewayhasbeentestedinWeifangDA.Fourthly,aboutthedifficultyforbuildingthemodelofloadforecasting,bigparameterscatterlimitandsomethingconcerned,thedissertationintroducessomeparameters,eg.weatherfactor,datetypeandsocialenvironmenteffectbasedonanalysisof

12、routineloadforecastingandmeans.Itpresentsthewayforelectricityloadforecastingfoundedonneuralnetwork(ANN),whichhasbeentesteditsvaliditybyexampleandmadetobegoodpracticaleffect.Fifthly,concerningthelackofconcordantwaveonpreventingconcordantwaveandnon-powercompensationandnon-continuityoncompensation,ther

13、eisatopologystructureofPWMmaincircuitandnonpowertheoryonactivefilterthewavestechniqueandbuildsflatproofonthegroundofSaberDesignerandprovestobepractical.Meanwhile,itanalyzesanddesignsthewayofnon-powerneedofelectricnetworktre-ndsanddecreasinglinelosscombinedwithDA,whichhavebeentesteditsobjectiveeconom

14、icbenefitthrou-ghcountingexample.Sixthly,notonlydothedissertationdesignawayfoundedonthemagrginalelectricpricefittedtoourpresentnationalelectricpowermarketwithregardstofuturetrendsofelectricpowermarketinChinaandfairtradeunderthegovernmentsurveillance,thatisgroupcompetitioninshort-termtradeundertheway

15、ofgroupedpriceandquantityharmony,butalsoputsforwardcombinationarithmetic,mathmodeloftradingplanandsaftyeconomicalrestriction.Itcansolvetheoriginalcontradictionbetweenmediumandlongtermcontractpriceandshorttermcompetitivepricewithimprovementoncompetitivepercentageandcutdowntheunfairincomedifferenceofe

16、lectricfactory,atthesametime,itcanoptimizetheelectriclimitforallelectricfactoriesandreducethetotalpurchasechargeofelectricpowerfromburthencurveofwholeelectricmarketnetwork.Thedistributionnetworkisanimportantlinkamongthepowersystem.Itsneutralgroundingmodeandoperationconnectssecurityandstabilityofthep

17、owersystemdirectly.Atthesametime,theproblemaboutneutralgroundingisassociatedwithnationalconditions,naturalenvironment,devicefabricationandoperation.Forexample,theactivitysituationofthethunderandlightning,insulatingstructureandtheperipheralinterferencewillinfluencethechoiceofneutralgroundingmodeConve

18、rsely,neutralgroundingmodeaffectsdesign,operation,debugsanddeveloping.Generallyinthesystemhigheringradeinthevoltage,theinsulatingexpensesaccountformoresizableproportionatthetotalpriceoftheequipment.Itisveryremarkabletobringtheeconomicbenefitsbyreducingtheinsulatingle文档视界2022/25e7762b48fe04a1b0717fd5

19、360cba1aa9118c22epchy1kjfnd.htmluallysuchsystemadopttheneutraldirectlygroundingandadopttheautoreclosingtoguaranteepowersupplyreliability.Onthecontrary,thesystemwhichislowerinthevoltageadoptsneutralnonegroundingtoraisepowersupplyreliability.Soitisanimportantsubjecttomakeuseofnew-typeearthdevicetoappl

20、ytothedistributionnetworkunderconsideringthesituationinsuchfactorsofvariousfieldsaspowersupplyreliability,safetyfactor,over-voltagefactor,thechoiceofrelayprotection,investmentcost,etc.Themainworkofthispaperistoresearchandchoicetheneutralgroundingmodeofthel0kVdistributionnetwork.Theneutralgroundingmo

21、deofthel0kVnetworkmainlyadoptsnonegrounding,groundingbyarcsuppressingcoil,groundingbyreactancegroundinganddirectlygrounding.Thebestgroundingmodeisconfirmedthroughthetechnologycomparison.Itcanhelpthenetworkruninsafetyandlimittheearthelectricarcbyusingauto-trackingcompensatedeviceandusingthelineprotec

22、tionwiththedetectionofthesensitivesmallgroundcurrent.Thepaperintroducesandanalyzesthecharacteristicofallkindofgroundingmodesaboutl0kVnetworkatfirst.Withthecomparisonwithtechnologicalandeconomy,theconclusionisdrawnthattheimprovedarcsuppressingcoilgroundingmodeshowsaverybigdevelopmentpotential.Then,th

23、ispaperresearchesandintroducessomeoperationcharacteristicsofthearcsuppressingcoilgroundingmodeofthel0kVdistributionnetwork.Andthenthepaperputemphasisonhowtoextinguishtheearthelectricarceffectivelybyutilizingtheresonanceprinciple.Thispapercombinesthedevelopmentofdomesticandinternationaltechnologyandi

24、nnovativeachievement,andintroducesthecomputerearthprotectionandautotrackingcompensatedevice.Itprovesthattheimprovedarcsuppressingcoilgroundingmodehavebetteroperationcharacteristicsinpowersupplyreliability,personalsecurity,securityofequipmentandinterferenceofcommunication.Theapplicationofthearcsuppre

25、ssingcoilgroundingmodeisalsoresearchedinthispaper.Finally,thepapersummarizesthistopicresearch.Asaresultofthedominationofthearcsuppressingcoilgroundingmode,itshouldbemorepopularizedandappliedinthedistributionnetworkinthefuture.Thewayofthinking,projectandconclusionsinthisthesishaveeffectontheresearcht

26、ochoosetheneutralgroundingmodenotonlyinI0kVdistributionnetworkbutalsoinotherpowersystem.Thebasicfunctionoftheelectricpowersystemistotransporttheelectricpowertowardscustomers.Thel0kVelectricdistributionnetisakeypointthatconnectsthepowersupplywiththeelectricityusingontheindustry,businessanddaily-life.

27、Fortheelectricpower,allcostumersexpecttopaythelowestpriceforthehighestreliability,butdontconsiderthatitsself-contradictoryintheco-existenceofeconomyandreliable.Toimprovethereliabilityofthepowersupplynetwork,wemustincreasetheinvestmentcostofthenetworkcon-structionBut,ifthecostthatimprovethereliabilit

28、yofthenetworkconstruction,buttheinvestmentonthiskindofconstructionwouldbeworthlessifthereducinglossisonthepower-offislessthantheincreasinginvestmentonimprovingthereliability.Thuswefindoutabalancepointtomakethemosteconomic,betweentheinvestmentandthelossbycalculatingtheinvestmentonpowernetandthelossbr

29、oughtfrompower-off.Thethesisanalysesontheeconomicandthereliableofthevariouslinemodes,accordingtothecharacteristicsvariouslinemodesexistedintheelectricdistributionnetinfoshan.First,thethesisintroducesasthedifferentlinemodesinthel0kVelectricdistributionnetandinsomeforeigncountries.Makingitcleartowtoco

30、nductanalyzingonthelinemodeoftheelectricdistributionnet,andtellingushowimportantandnecessarythatanalysesare.Second,itturnstothenecessityofcalculatingthenumberofoptimizationsubsection,elaboratinghowitinfluencesontheeconomyandreliability.Thenbybuildingupthecalculationmodeofthenumberofoptimizationsubse

31、ctionitintroducesdifferentpowersupplyprojectsonthedifferentlinemodesinbrief.Third,itcarriesonthecalculationandanalysestowardsthereliabilityandeconomyofthedifferentlinemodesofelectricdistributionnet,describingdraftsaccordingbythecalculation.Thenitmakesanalysisanddiscussiononthenumberofoptimizationsub

32、section.Atlast,thearticlemakeconclusionontheeconomyandreliabilityofdifferentlinemodes,aswellas,itsapplicationsituation.Accordiontotheactualcircumstance,thethesisputsforwardthebeneficialsuggestionontheprogrammingandconstructionofthel0kVelectricdistributionnetinallareasinfoshan.Providingthebasictheoriesandbeneficialguidelinefortheprogrammingdesignofthe10kVelectricdistributionnetandbuildingupasolidnet,reasonablelayout,qualifiedsafeandefficiently-workedelectricdistributionnet.