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ID:34223748
大小:6.69 MB
页数:57页
时间:2019-03-04
《低压微电网运行特性及控制技术的研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、ResearchontheOperatingCharacteristicsandControllingTechnologyoftheLowVoltageMicrogridABSTRACTAtpresent.issuesaboutenergyandenvironmenthavebecomeakeyfactorrestrictingsocialdevelopment.Distributedgenerationcanachievethewin’Wlnsituationofenergysavingandbeingenv
2、ironmentallyfriendly;therefore,itgraduallybecomesanimportantresearchorientationofthepowerindustry·However.distributedgenerationhasmanydeficiencies.Theconceptofmicrogridwasbroughtintobeingtosolvethecontradictionbetweenthepowersystemandtheconnectionofdistribut
3、edgeneration,andtogivefullplaytothepotentialofdistributedgeneration,andithasgraduallybecomeahottopicofresearchathomeandabroad.Thispapermainlyfocusesontheresearchintotheoperatingcharacteristicsandcontrollingtechnologyoflow—voltagemicrogrid,andthemaincontentsa
4、reasfollows:First.theoDerationmodeandcontrollingrequirementsofatypicalmicrogridaredeeplyanalyzed,andabriefintroductionofthedistributedgenerator,energystoragedevices,switches,powerelectronicdevices,communicationstechnologyandcharacteristicsofloadisgiven.Secon
5、d.onthebasisthatmostofthedistributedgeneratorsinmicrogridareottheinverter.type,thispapermainlyfocusesonthreecommonlyusedcontrollingmethodsofdistributedgenerators:constantpowercontrol,constantvoltage/constantfrequencycontrolanddroopingcontr01.Theconclusionist
6、hatdifferentdistributedgeneratorsanddifferentoperatingmodeofthemicrogridsystemrequiredifferentcontrollingmethods.Onthisbasis,threecommonlyusedmicrogridsystemcontrollingmodesareresearched.i.e.masterslavecontrol,peer—to’peercontrolandhierarchicalcontrol,withde
7、tailedanalysisofimplementationmethodsofthethreecontrollingmethodsandtheircharacteristics.Builtonthebasisoftheoreticalanalysis,andbasedonMatlab/Simulinksimulationplatform,thesimulationmodelofV/fcontrolandPQcontrolsystemofmlcrosourcesarebullt·Besides.asimplest
8、ructureofmicrogridsimulationmodelcontainingtwomicrosourcesisestablished.Simulationaboutpartofthecharacteristicsotgrid—connectedmodeandislandedmodeofmicrogridismadeusingmasterslavecontrol,andthes
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