基于殘差生成器的直流微電網(wǎng)穩(wěn)定性控制策略研究

基于殘差生成器的直流微電網(wǎng)穩(wěn)定性控制策略研究基于殘差生成器的直流微電網(wǎng)穩(wěn)定性控制策略研究

摘要：直流微電網(wǎng)已成為新一代低碳、高效的分布式能源系統(tǒng)，在能源轉(zhuǎn)型背景下，直流微電網(wǎng)穩(wěn)定性控制逐漸成為研究的熱點(diǎn)。本文針對直流微電網(wǎng)中存在的負(fù)載變化、逆變器故障等問題，提出一種反饋殘差生成器控制策略。該方法能夠生成直流微電網(wǎng)各環(huán)節(jié)的反饋殘差信號，從而控制微電網(wǎng)系統(tǒng)的穩(wěn)定性。同時(shí)，本文建立了直流微電網(wǎng)模型，分析了微電網(wǎng)控制系統(tǒng)的穩(wěn)定性特性，驗(yàn)證了提出控制策略的有效性和優(yōu)越性。實(shí)驗(yàn)結(jié)果表明，該方法能夠有效地提升直流微電網(wǎng)控制系統(tǒng)的響應(yīng)速度、穩(wěn)定性和抗干擾能力，保證了直流微電網(wǎng)的安全穩(wěn)定運(yùn)行。

關(guān)鍵詞：直流微電網(wǎng)；穩(wěn)定性控制；殘差生成器；反饋殘差信號；模型建立

Abstract:DCmicrogridhasbecomeanewgenerationoflow-carbonandefficientdistributedenergysystem.Underthebackgroundofenergytransformation,stabilitycontrolofDCmicrogridhasgraduallybecomearesearchhotspot.Inthispaper,afeedbackresidualgeneratorcontrolstrategyisproposedtosolvetheproblemsofloadchangeandinverterfaultinDCmicrogrid.ThemethodcangeneratefeedbackresidualsignalsofvarioussectionsofDCmicrogrid,therebycontrollingthestabilityofmicrogridsystem.Meanwhile,theDCmicrogridmodelisestablished,andthestabilitycharacteristicsofthemicrogridcontrolsystemareanalyzed,whichverifiestheeffectivenessandsuperiorityoftheproposedcontrolstrategy.Experimentalresultsshowthattheproposedmethodcaneffectivelyimprovetheresponsespeed,stabilityandanti-interferenceabilityoftheDCmicrogridcontrolsystem,andensurethesafeandstableoperationoftheDCmicrogrid.

Keywords:DCmicrogrid;Stabilitycontrol;Residualgenerator;Feedbackresidualsignal;ModelestablishmentIntheproposedDCmicrogridcontrolsystem,thestabilitycontrolisachievedthroughtheuseofaresidualgeneratorandafeedbackresidualsignal.Theresidualgeneratorisresponsibleforgeneratingaresidualsignalthatcanreflectthedifferencebetweentheactualoutputandthedesiredoutputofthesystem.Thisresidualsignalisthenfedbacktothecontrollertoadjustthesystemaccordingly,improvingthestabilityofthemicrogrid.

Toachievethestabilitycontrol,amathematicalmodeloftheDCmicrogridwasestablished.Themodelincludesthesystemdynamics,theconverterdynamics,andtheloaddynamics.Basedonthismodel,theresidualgeneratorwasdesignedtobealinearcombinationofthemeasuredoutputsignals,whichcaneffectivelyreflectthesystemdynamics.

TheproposedmethodwastestedonaDCmicrogridprototype,andtheexperimentalresultsshowedthattheproposedcontrolstrategycaneffectivelyimprovethestabilityandanti-interferenceabilityofthemicrogridcontrolsystem.Theresponsespeedofthesystemwasalsoimproved,andthesafeandstableoperationofthemicrogridwasensured.

Inconclusion,theproposedDCmicrogridcontrolsystemwithstabilitycontrolusingaresidualgeneratorandfeedbackresidualsignalwasanalyzedandverifiedtobeeffectiveandsuperior.Thismethodcaneffectivelyimprovetheresponsespeed,stability,andanti-interferenceabilityofthemicrogridcontrolsystem,andensurethesafeandstableoperationofthemicrogridTofurtherenhancetheperformanceoftheproposedDCmicrogridcontrolsystem,severalfutureresearchdirectionscanbeexplored.First,theintegrationofrenewableenergysources,suchaswindandsolarpower,canbeconsidered.Thiswillrequirethedevelopmentofefficientalgorithmsforforecastingtheoutputpowerofthesesources,aswellascoordinationstrategiesbetweendifferentsourcestoensureastableandreliablesupplyofpower.Second,theuseofadvancedenergystoragesystems,suchasbatteriesandsupercapacitors,canbeinvestigated.Thiscanhelptoimprovetheflexibilityandreliabilityofthemicrogrid,andalsoenhanceitsabilitytorespondtodynamicloadchanges.Third,thedevelopmentofoptimalcontrolstrategiesforthemicrogridcanbepursued.Thiscaninvolvetheuseofadvancedoptimizationtechniquessuchasmodelpredictivecontrol,whichcanhelptominimizeenergycostsandreducecarbonemissions.Finally,theintegrationofinternetofthings(IoT)technologiescanbeexplored,whichcanenablereal-timemonitoringandcontrolofthemicrogridfromremotelocations,aswellastheintegrationofothersmartgridapplicationssuchasdemandresponseandgridmanagement.

Overall,theproposedDCmicrogridcontrolsystemisapromisingsolutionforachievingasafe,stable,andefficientoperationofsmall-scalepowersystems.Byincorporatingstabilitycontrolusingresidualsignalsandfeedback,thesystemcaneffectivelyreducetheimpactofdisturbancesandensureasmoothtransitionbetweendifferentoperatingmodes.Withfurtherresearchanddevelopment,thistechnologyhasthepotentialtorevolutionizethewaywegenerate,distribute,andconsumeelectricity,leadingtoamoresustainableandresilientenergyinfrastructureFurthermore,thistechnologycanbeintegratedwithrenewableenergysources,suchassolarandwindpower,tocreatemicrogridsthatarecapableofsupplyingreliable,cleanenergytoremoteandoff-gridcommunities.Byutilizingenergystoragesystemsanddemand-sidemanagementstrategies,thesemicrogridscanprovideastableandcost-effectiveenergysupply,whilereducinggreenhousegasemissionsandpromotingenergyindependence.

Inaddition,theuseofadvancedsensorsandmonitoringequipmentcanprovidereal-timedataontheperformanceofthepowersystem,allowingoperatorstoidentifyandaddressissuesbeforetheybecomemajorproblems.Thiscanimprovetheoverallefficiencyofthesystem,reducedowntime,andultimatelysavecosts.

Moreover,small-scalepowersystemscanalsoplayavitalroleindisasterresponseandrecoveryefforts.Intheaftermathofnaturaldisasters,suchashurricanesorearthquakes,traditionalpowergridscanbeseverelydamaged,leavingcommunitieswithoutaccesstoelectricityforextendedperiods.However,microgridscanfunctionindependentlyofthelargergrid,providingcriticalenergyservicestoemergencyresponders,hospitals,andotheressentialfacilities.

Overall,thedevelopmentanddeploymentofstable,efficient,andresilientsmall-scalepowersystemscanhavesignificantbenefitsforindividuals,communities,andthee