Разпределена мощност

Meaning

Themostconcisedefinitionofdistributedpoweris:35kVandbelowthepowersupplythatisnotdirectlyconnectedtothecentralizedtransmissionsystem,whichmainlyincludespowergenerationequipmentandenergystoragedevices.

Advantages

(1)Economical:Becausedistributedgenerationislocatedontheusersideandclosetotheloadcenter,theconstructioncostandlossofthetransmissionanddistributionnetworkaregreatlyreduced;atthesametime,thedistributionPowergenerationplanningandconstructioncycleisshort,investmentiseffective,andinvestmentriskissmall.

(2)Environmentalprotection:Distributedpowergenerationcanmakeextensiveuseofcleanandrenewableenergy,reducingtheconsumptionoffossilenergyandtheemissionofharmfulgases.

(3)Flexibility:Distributedpowergenerationsystemsmostlyusesmallandmedium-sizedmodularequipmentwithadvancedperformance,whicharefastonandoff,convenientformaintenanceandmanagement,flexibleadjustment,andeachpowersourceisrelativelyindependent,whichcanmeetpeakshavingandfilling.Valley,powersupplyforimportantusersandotherdifferentneeds.

(4)Security:Therearevariousformsofdistributedpowergeneration,whichcanreducethedependenceonasingleenergysourceandalleviatetheexpansionoftheenergycrisistoacertainextent;atthesametime,thedistributedpowergenerationlocationisscattered,anditisnotvulnerabletoaccidentaldisasters.Ortheimpactofemergencieshasthepotentialtowithstandlarge-scaleblackouts.

Features

Distributedenergysystemsdonotsimplyusetraditionalpowergenerationtechnologies,butarebasedonnewtechnologiessuchasautomaticcontrolsystems,advancedmaterialtechnologies,andflexiblemanufacturingprocesses.Onthebasis,anewenergyproductionsystemwithlowpollutionemissions,flexibility,convenience,highreliabilityandhighefficiency.

Thepowergenerationsystemthatcomposesthedistributedenergysystemhasthefollowingcharacteristics:

①Efficientuseofwasteenergygeneratedbypowergenerationtogenerateheatandelectricity;

②Система за възобновяема енергия на място;

③Includesanenergyrecyclingsystemthatuseson-sitewastegas,wasteheatandexcesspressuretogenerateelectricity.

Classification

DistributedGeneration(DG)devicescanbedividedintocogenerationpowergeneration,internalcombustionenginepowergeneration,gasturbinepowergeneration,andsmallhydropowergenerationaccordingtodifferenttechnologiesused.,Windpower,solarphotovoltaicpowergeneration,fuelcells,etc.;accordingtothetypeofenergyused,DGcanbedividedintofossilenergy(coal,oil,naturalgas)powergenerationandrenewableenergy(wind,solar,tidal,biomass,smallhydropower,etc.))Twoformsofpowergeneration.DistributedEnergyStorage(DES)devicesrefertoenergystorageandconversiondevicesthataremodular,canbequicklyassembled,andconnectedtothepowerdistributionnetwork.Accordingtodifferentformsofenergystorage,DEScanbedividedintoelectrochemicalenergystorage(suchasbatteryenergystoragedevices),electromagneticenergystorage(suchassuperconductingenergystorageandsupercapacitorenergystorage,etc.),mechanicalenergystoragedevices(suchasflywheelenergystorageandCompressedairenergystorage,etc.),thermalenergystoragedevices,etc.Inaddition,thefast-developingelectricvehiclescanalsosendelectricitytothedistributionnetworkwhenneeded,soitisalsoakindofDES.

Definition

Thedefinitionofdistributedpoweristhatitislocatedneartheuser,thegeneratedpowercanbeusedon-site,anditisconnectedtothegridatavoltagelevelof10kVandbelow,andasinglegrid-connectedpointhasatotalPowergenerationprojectswithinstalledcapacitynotexceeding6MW.Includingsolarenergy,naturalgas,biomassenergy,windenergy,geothermalenergy,oceanenergy,comprehensiveutilizationofresourcesforpowergenerationandothertypes.

Цел

Днешните разпределени източници на енергия се отнасят главно до двигатели с вътрешно горене (IC), които използват течни или газови горива, микротурбини (Микротурбини) и различни инженерни горивни клетки (FuelCell), слънчеви електроцентрали и вятърни турбини. лунни единици"вече не са едно и също понятие.

Общ модел

Разпределено постояннотоково захранване400W;

800W;600W;широк диапазон на приложение,

Висока производителност

Значение

Разпределената енергия може да използва природен газ, метан от въглищни залежи и други горива, както и ресурси от отпадъчен газ като биогаз, коксов газ и дори енергия от вятъра, слънчева енергия и вода. Може да чака за възобновяеми ресурси. горивото от повечето разпределени източници на енергия е предимно природен газ или дизел. По-конкретно, значението на развитието на разпределената енергия има следните аспекти:

(1)Икономичност

BecausethewasteheatofdistributedenergycanbeusedtogenerateelectricityHeatingandcooling,soenergycanbeusedinareasonablecascade,whichcanimprovetheefficiencyofenergyuse(upto70%-90%).Duetotheintegrationofdistributedpowersources,large-scalepowerplantsandhigh-voltagetransmissiongridshavebeenreducedorpostponed,andtheconstructionofpowergridshasbeenpostponedtosaveinvestment.Atthesametime,thepowerflowofthetransmissionanddistributionnetworkisreduced,andthenetworklossiscorrespondinglyreduced.

(2)Опазване на околната среда

Becauseitusesnaturalgasasfuelorhydrogen,solarenergy,andwindenergyasenergysources,itcanreducethetotalemissionsofharmfulsubstances.Reducethepressureonenvironmentalprotection:Alargeamountofnearbypowersupplyreducestheconstructionoflarge-capacityandlong-distancehigh-voltagetransmissionlines,whichnotonlyreducestheelectromagneticpollutionofhigh-voltagetransmissionlines,butalsoreducesthelandacquisitionareaandlinecorridorsofhigh-voltagetransmissionlines.Thefellingoftreesunderthelineisconducivetoenvironmentalprotection.

(3) Разнообразие на оползотворяване на енергия

Distributedpowergenerationcanuseavarietyofenergysources,suchascleanenergy(naturalgas)andnewenergy(hydrogen)Andrenewableenergy(windenergyandsolarenergy,etc.),andprovideuserswithmultipleenergyapplicationssuchascold,heat,andelectricityatthesametime,soitisagoodwaytosolvetheenergycrisis,improveenergyefficiencyandenergysecurity.

(4) Ефект на бръснене

Summerandwinterareoftenthepeakperiodsofload.Atthistime,suchastheuseofnaturalgasasfuelgasturbinesandothercold,Thecombinedheatandpowersystemcannotonlysolvethecoolingandheatingneedsinwinterandsummer,butalsoprovidepartoftheelectricity,whichcanreducethepeakandfillthevalley.Inaddition,italsopartiallysolvedtheproblemofexcessivepeak-to-valleydifferenceinnaturalgassupply,andplayedacomplementaryroleinnaturalgasandelectricity.

(5) Безопасност и надеждност

Whenalarge-scaleblackoutoccursinalargepowergrid,aspeciallydesigneddistributedpowergenerationsystemcanstillmaintainNormaloperation,whichcanimprovethesafetyandreliabilityofpowersupply.

(6) Проблеми с пазара на електроенергия

Distributedpowergenerationcanadapttotheneedsofpowermarketdevelopment.Multiplefundsareusedtogeneratepower,andthepowerconstructionmarketcanbefullyutilized.Thecompetitionmechanismoftheelectricitysupplymarket.

(7)Инвестиционен риск

Theinstalledcapacityofdistributedpowergenerationisgenerallysmallandtheconstructionperiodisshort,soitcanbeavoidedSimilartotheinvestmentrisksbroughtbytheconstructioncycleoflargepowerstations.

(8)Проблеми с електрозахранването в отдалечени райони

ManyremoteandruralareasThegridsuppliespowertoit.Anindependentpowergenerationsystemusingsolarphotovoltaicpowergeneration,windpowergenerationandbiomasspowergenerationisapreferredmethod.