补偿微网电压暂降的超级电容储能式pf-研究

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1、万方数据AbstractThroughouttheworldenergyoverahundredyearsofdevelopment，thecontradictionbetweenenergysupplyanddemandforcespeopletothesamedegreeofconcernforgreenenergyecologicalenvironmentgradually．Microgridcanbeintegratedphotovoltaic，biomasspowergeneration，windpowerandotherrenewableenergygenerati

2、onunits，itcansaveinvestment，reduceenergyconsumption，improveenergyefficiency，tomeetthegrowingdemandforelectricity．However，newenergygenerationmicro—gridrandomandintermittentexample：instantaneouspowerfailure，voltagesagsandotherpowerqualityproblemscausedgreatimpactonthestableoperatiomofthemicro—

3、grid．Andalsoonthemicro-gridpowersystemandpowergenerationtodevelopamorestringentpowerqualitystandards．Inthisform，aimingatmicro—gridvoltagesagpowerqualityproblemsareanalyzedinordertoimprovetheproposedsupercapacitorenergystorageelementasanactivepowerfilter(APF)，toachieveamulti—functionalrequire

4、ments，integratedmicrogridqualityimprovement．SupercapacitorenergystorageAPFhastwomodes：normaloperationwhenthemicrogrid，itsworkinharmonicsuppressionmodeforharmonicsuppressionmicrogrid；inmicrogridvoltagesagoccurs，itsworkingvoltagecompensationmodetocompensateformicro—gridvoltagesags．Dependingont

5、hecauseofthemicro-gridvoltagesags，classificationcompensation：Forintemalreasonsvoltagepowergridcausedbythemicro-dips，voltagesmallerdecline，theuseofsupercapacitorenergystoragetocompensateAPFalone；forreasonscausedbythedistributionnetworksidethevoltagesag，usingsupercapacitorenegystorageAPFandser

6、iesinvertermicro-gridvoltagesagcompensation．ByMatlab／Simulinksimulationtoverifythefeasibilityofthemethodsused．Themethodproposedinthepapertorunflexibleandeffectiveagainstmicro-gridvoltagesagtocompensate，effectivelylimitingthedistributionnetworkvoltagesagoccurswhenthefaultcurrentdistributionne

7、tworkbetweenthemicrogridandcontactline，haveacertainpracticalsignificanceandpracticalengineeringapplication．KeyWords：Supercapacitor；Voltagesagcompensation；Micro酣d；Activepowerfilter万方数据目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯_⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．IAbstract．．⋯⋯．⋯．．⋯．