含微网的配电系统电压暂降-分析和控制

《含微网的配电系统电压暂降-分析和控制》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、万方数据华北电力大学硕士学位论文AbstractChinahasthevastterritoryandabundantresources，butthedistributionofresourcesisextremelyunbalanced．Itisanefficientandenvironment-friendlywaytobuildpowerplantnearbypitandtransporttheenergyfromplanttoloadcenterthroughtheultrahighvoltage(uav)transmissionline

2、．Butthewind，solarandbiomassenergycanbetransportedthroughlong·-distanceandlarge··scalewayinlimitedplaces．Somostrenewableenergyisdevelopedandutilizedinadistributedway．Differenttypesofcomplementaryenergyformacommonmicro—networkandtheprimaryenergycanbeconvertedthroughvarietyofdev

3、icestosecondenergy,whicheffectivelyimprovestheefficiencyoftheutilizationofprimaryenergy．Atthesametimetheenergystorageisaddedintomicro·grid，whichcanbeusedtosmooththepowerfluctuationsandensurethevoltageandfrequencystabilityandbalanceofgenerationandload．Micro—gridbringsconvenien

4、cetoourlife，butitcontainsalargenumberofpowerelectronicconversiondevices，whichneedhigherpowerqualityandrequirements．Voltagesagmayleadtoabnormaloperationofpowerelectronicdevices，whichmaycausethecollapseofmicro—girdandusersmaysufferhugeeconomiclosses．Sothestudyofvoltagesagofdist

5、ributionsystemcontainingmicro-gridhasimportantsignificanceanditcanimprovethepowerqualityofmicro—gridanddistributionsystem．Inthispaper,thestructure，keytechnologyandmainmicrosourcesofthemicro-gridarestudied．Thesimulationmodelofdistributionsystemwithmicro-gridiSestablishedonthep

6、latformofPSCADsoftwareandthemechanismofvoltagesaginthedistributionwithmicro—gridisanalyzed．Accordingtothecharacteristicsofmicro·gridandmicro-sources，avoltagedynamiccompensatorsuitablefordistributionsystemwithmicro-gridshasbeenputforward，whichcoordinatelycontrolsthePVunitandce

7、lltoprovideenergyforDVR．FinallythecompensationeffectofDVRisverifiedthroughthesimulation．TheresultsshowthattheDVRcanbeappliedindistributionsystemwithmicro．gridsduringnormalrunninganditcaneffectivelyimprovethepowerqualityofdistributionsystemwithmicro·grids．Keywords：Micro-grid，p

8、owerquality，voltagesagII万方数据华北电力大学硕士学位论文目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯