單親遺傳算法對(duì)于在梯級(jí)水力發(fā)系統(tǒng)中多級(jí)電站的經(jīng)濟(jì)分配方法的改進(jìn)作用畢業(yè)論文外文翻譯

1、外文資料原文AnimprovedparthenogeicalgithmfmultiobjectiveeconomicdispatchincadedhyowersystemsAbstract：Themultiobjectiveeconomicdispatch(MOED)problemincadedhyowersystemsisacomplicatednonlinearoptimizationproblemwithagroupofcompl

2、exconstraints.Inthispaperanimprovedparthenogeicalgithm(IPGA)fresolvingtheMOEDprobleminhyowerenergysystemsbasedonthenonunifmmutationoperatisproposed.Inthenewalgithmthecrossoveroperatisremovedonlymutationoperationismadewhi

3、chmakesitsimplerthanGAinthegeicoperationsnotgenerateinvalidoffspringduringevolution.WiththehelpofincpatinggreedyionideaintothenonunifmmutationoperatIPGAsearchesthesolutionspaceunifmlyattheearlystageverylocallyatthelaters

4、tagewhichmakesitavoidtheromblindjumpingstayatthepromisingsolutionareas.FinallytheproposedalgithmisappliedtoarealistichyowerenergysystemwithtwogiantscalecadedhyowerplantsinChina.Comparedwithotheralgithmstheresultsobtained

5、usingIPGAverifyitssuperiityinbothefficienc.Keywds:multiobjectiveoptimizationImprovedparthenogeicalgithmNonunifmmutationoperat.Cadehyowerstationgroupof.IntroductionOptimizationofmultiobjectiveeconomicdispatch(MOED)incaded

6、hyowersystemsisoneofthemostcomplicatedissuesinwaterresourcesmanagementasittypicallyinvolvestradeoffs.Fexampleasinglemultipurposereservoirwhichnotonlyserveshyowerbutalsonavigationitsdispatchermaywishtomaximizebenefitsfrom

7、hyowergenerationwhilereleasingsufficientwaterfnavigationtosatisfythedems.Howeverahigherprofitfromhyowergenerationwouldconflictwiththenavigationreleasesthatistosayanyimprovementofoneobjectivecanbeachievedonlyattheexpenseo

8、fanother.Thecurvesurface(fmethan2objectives)describingtheoptimaltradeoffsolutionsbetweentheobjectivesisknownastheParetofront.Inreallifemostofreservoirsystemsservemultiplepurposestheyaremultiobjectiveinnature.Duetothedisp

9、atchrulesfajointoperationofcadereservoirsenabletodevelopthecapacityofhyowergenerationtheMOEDproblemincadedhyowersystemsbecomesanactiveresearchareainrecentyears.ThegoalofMOEDincadedhyowersystemsistodeterminethewaterdisgep

10、rocessofallhyowerstationsduringtheschedulingperiodindertomaximizethetotalbenefitwhilefulfillingvariousactualwaterdemsothercomplicatedAccdingtotheparthenogeicschematheemsproposedinliteraturewefindthathighrankschemasinthes

11、ubsequentgenerationdecreaseexponentiallythoughtheirfitnessvaluesaremeoptimalthantheaverageoneinthepopulationwhichmaycausethehighrankschemasthatmatchtheglobaloptimalindividualtobedesertedfastbefetheglobaloptimalindividual

12、isfound.ItseemsthatPGArunsawayfromtheareawheretheglobaloptimalindividualliesthoughsearchnearstheareawhichreducesthesearchingefficiencyofPGA.Indertoovercomethisshtcomingavoidtheundesirabletendencythispaperpresentsanimprov

13、edparthenogeicalgithm(IPGA)basedonthenonunifmmutationoperattosolvetheMOEDproblemincadedhyowersystems.Meanwhilethegreedyideatheideaofmutatingasinglecomponentoftheindividualvectratherthanmodifyingallthecomponentsareincpate

14、dintoIPGAindertoavoidpossibleromjumpstoensurethealgithmtostayatthepromisingareajustfoundbythesearchenginefthebetteroptimalindividual.Therestofthepaperisganizedasfollows.Section‘Numericalmodel’describesthemodeloftheMOEDpr

15、oblemincadedhyowersystems.Section‘Improvedparthenogeicalgithm’presentstheIPGAintroducesitsrealizationprocessindetail.Section‘ImplementationofIPGAfeconomicdispatchincadehyowersystems’evaluatestheproposedalgithmcomparesitw

16、ithdifferentalgithmsusingthedatafromahyowerenergysystemwithtwocadereservoirsinChina.FinallyweconcludethispaperinSection‘Conclusions’.NumericalmodelTheeconomicdispatchofcadedhyowerplantsisatypicalproblemintheoptimalfields

17、ofhyowerenergysystem.Usuallytheoperationpurposeistomaximizethetotalpowergenerationbenefitstotalelectricityproductionofcadedhyowerplantsduringtheschedulingperiodbydeterminingtheoptimalprocessofwaterdisgevalueofhyowerstati

18、onsundertheconditionofsatisfyingallconstraints.HoweverwiththedevelopmentofsocialeconomyinChinachangeofpowerconsumptionstructurerequiresmostlargecapacityunitstobeinvolvedinpeakloadregulationofelectricitygrid.Indertoguideo

19、ptimaloperationofcadereservoirsgivefullplaytocapacitybenefitsofcadehyowerstationsamathematicalmodelisestablishedbasedontheprinciplesof(1)maximumtotalelectricityproduction(2)maximumtotalleastoutputofthecadedhyowerplantsin

20、thispaper.Thespatialcouplingofahyowerenergysystemwithtwocadereservoirsisshownintheobjectivefunctionsconstraintsofafementionedmathematicalmodelareexpressedasfollows:Obviouslythisisamultiobjectiveoptimizationproblem.Weight

21、edapproachconstraintmethodareusuallyemployedbymanyresearcherstohleitinwaterresourcesmanagement.FtheconstraintmethodallobjectivesexceptthemajoneareconstrainedtospecificvaluestoyieldaParetooptimalsolution.Withincrementofth