基于居民可控负荷的微电网电压响应策略-研究

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1、AbstractMicrogridisasmallautonomouspowerdistributionsystem，includingdistributedgeneration，energystoragedevicesandloads．Microgridtakestheadvantagesofdistributedgenerationwhileweakeningthenegativeeffectsofdistributedgenerationonthegrid，Microgridhastheadvantageofhighpowersupplyreliability，fle

2、xibility，economyandenvironmentallyfriendly．However，themicrosourcesinmicrogridaresignificantlyinfluencedbynaturalconditions，resultingintheirrandom，intermittentanduncontrollableoutputpower·IteasilYcausesvoltagefluctuations，especiallyforthemicrogridthatisoperatedinisland·Therefore，microgridus

3、uallyconsistsofacertaincapacityofenergystorageunttandreactivecompensationdevicetomaintainthesystemvoltagestability，whichresultsintheincreaseofpowergridconstructioncost．Residentialcontroilableloadssuchasthermostaticallycontrolledloads(TCL)arethermalenergystorageequipment，whichcanstoreenergy

4、forseveralmmute8o。evenhoursandcansubstitutetraditionalenergystoragesystem·Inaddirion，comparedtotheresourcesingenerationside，Residentialloadsareextremelydecentralized，whichcanprovidereservetomakerapidresponseinJustafewminutesor1ess．Therefore，responsemadebyresidentialcontrollableloadsissigni

5、ficanttoimprovethemicrogridoperatingcharacteristicsanditsVoItagestabilitvcontr01．Focusingonresidentialcontrollableloadsrespondingtothevoltagetoimprovethevoltagestabilityinmicrogrid，thispapermakesthemamcontributionswhicharelistedasfollowing：First．thispapersummarizestheconcept，basicstructure

6、andcontroltechnologyofmicrogrid．Also，thecurrentstatusofmierogridhasbeenreviewedandtheapplicationstatusofresidentialcontrollableloadsinthemicrogridhasbeenconcluded．Second，thepaperresearchesthefeasibilityofresidentialcontrollableloadsmakingresponsetothemicrogridvoltageis．Then，basedontheabove

7、analysis，controlstrategyforresidentialcontrollableloadstorespondtothemicrogridvoltageisproposed。Throughthecontrolstrategy，residentialcontrollableloadsmakesresponsetothesystemrequirementactivelybychangingthetriggertemperatureofthecontrolsystem，providingmicrogri