中英文翻译--光伏系统设计.doc

PhotovoltaicSystemDesign1IntroductionAfterPVworkersunremittingefforts,solarcellproductiontechnologyconstantlyimprove,andincreasinglywidelyusedinvariousfields.Postsandtelecommunicationsinparticular,thetelecommunicationsindustryinrecentyearsbecauseoftherapiddevelopmentofcommunicationpowerrequirementshavebecomemoresophisticated,sostableandreliablepowerSolarenergyiswidelyusedincommunications.Andhowthevariousregionsofsolarradiationconditions,tothedesignofbotheconomicandreliablephotovoltaicpowersystem,whichisoneofthemanyexpertsandscholarsstudythelongstandingissue,buttherearemanyexcellentresearchresults,forthedevelopmentofChinasphotovoltaiclaidasolidfoundation.Theauthorofthestudyatthedesignmethodologyofexpertsfoundthatthedesignhasonlyconsideredtheselfmaintenanceofbatterytimethatis,thelongestconsecutiverainydays,withouttakingintoaccountthelossofelectricbatteriesassoonaspossibleaftertherecoverytimeie,twosetsofthelongestcontinuousraindays,theshortestintervalbetweenthedays.ThisproblemparticularlyinthesouthernChinaregionshouldpaygreatattentiontothesouthernregionbecauseofourrainydayislongtoo,andfortheconvenienceofindependentphotovoltaicpowersystem,becausethereisnootheremergencybackuppowerprotection,sothisproblemshouldbeincludedinthedesignconsideredtogether.Inthispaper,anintegrateddesignmethodofthepreviousadvantages,combinedwiththeauthorovertheyearsactuallyengagedinthedesignofphotovoltaicpowersystemsexperience,theintroductionoftwosetsofthelongestconsecutiverainydays,theshortestintervalbetweenthenumberofdaysasthebasisforthedesignofone,andcomprehensiveconsiderationofthetheimpactofsolarradiationconditionsofthefactorsthatmadesolarcells,theformulaforcalculatingbatterycapacity,andrelateddesignmethods.2ManyfactorsaffectthedesignSunsolarcellsonthegroundsquareontheradiationoflightspectrum,lightintensitybythethicknessoftheatmosphereieairquality,geographiclocation,thelocationoftheclimateandweather,terrainandsurfacefeaturessuchastheimpactofitsenergyinoneday,Januaryandayearofgreatchange,orevenyearsbetweenthetotalannualamountofradiationTherewerealsolargedifferences.Squaresolarphotoelectricconversionefficiency,bythebatteryitself,temperature,sunlightintensityandbatteryvoltagefluctuations,whichisthreeinonedaywillchange,sosquarephotovoltaicsolarcellconversionefficiencyisalsovariable.Batteryischarginginthefloatstate,withthesquareofitsvoltageoutputandloadpowerconsumptionchanges.Batteriestoprovideenergyisalsoaffectedbyenvironmentaltemperature.Solarenergybatterychargeanddischargecontrollermadebytheelectroniccomponentsmanufacturer,itisalsonecessaryenergy,whiletheuseofcomponentsofperformance,quality,etc.isalsorelatedtothesizeofenergyconsumption,thusaffectingtheefficiencyofcharge.Loadofelectricity,butalsoasdeterminedbyuses,suchascommunicationsrelaystations,unmannedweatherstationsandsoon,haveafixedpowerequipment.Someequipmentsuchasalighthouse,beaconlights,civilianpowerconsumptionsuchaslightingandequipmentpowerconsumptionareoftenchanging.Therefore,thesolarpowersystemdesign,theneedtoconsidermanyfactorsandcomplex.Characteristicsarethedatausedinmostpreviousstatisticaldata,thestatisticaldatameasurementanddataselectionareimportant.DesignersofthemissionareInthesolarcellmatrixundertheconditionsoftheenvironmentthatis,thesceneofthegeographicallocation,solarradiation,climate,weather,terrainandsurfacefeatures,etc.,thedesignofsolarcellandbatterypowersystemmatrixisWeshouldpayattentiontoeconomicefficiency,butalsotoensuresystemreliability.Locationofaparticularenergyofsolarradiationdatatometeorologicalinformationprovidedthebasisforthedesignofsolarcellsusedphalanx.Thesemeteorologicaldatarequiredtochecktheaccumulationofseveralyearsorevendecadesonaverage.VariousregionsontheEarthbysunlightandradiationchangesinthecyclefortheday,24h.Inasquareareaofsolarcellsalsohavethepoweroutput24hofthecyclicalchangesinitslawsandsunradiationintheregion,thechangesofthesame.However,changesinweatherwillaffectthesquareofthegeneratingcapacity.Ifyouhaveafewdaysconsecutiveraindays,almostsquareonthepowergenerationshouldnotrelyonbatteriestopower,andbatterydepthofdischargeandthenneedtobeaddedassoonaspossiblegood.Mostdesignersinordertoweatherthesuntoprovideadailytotalofradiationenergyortheannualaveragesunshinehoursasthedesignofthemaindata.Eachyearbecauseofaregionaldataisnotthesameasforthesakeofreliabilityshouldbetakenwithinthelastdecadeoftheminimumdata.Undertheloadofelectricityconsumption,insunshineandnosunshinewhenbatterypowerisrequired.Weatherprovidedbysolarpowerorthetotalamountofradiationthetotalsunshinehoursonthebatterycapacityofthesizeofthedecisionisindispensabledata.Phalanxofthesolarcell,theloadshouldincludeallpowersystemdevicesexceptforusebutalsohaveabatteryandelectricalcircuits,controllers,etc.consumption.Matrixcomponentsoftheoutputpowerandthenumberofseriesparallel,andseriesarerequiredinordertoobtaintheoperatingvoltage,inparallelarenecessaryinordertoobtainthecurrentwork,anappropriatenumberofcomponentsthroughwhichthecompositionofseriesparallelconnectionofsolarcellsrequiredphalanx.3DesignedcapacityofbatteriesSolarcellpowersupplysystemisthebatteryenergystoragedevices.AndsolarcellbatteriesareusuallysquarematchingjobatFloatingstate,withthesquareofitsvoltageoutputandloadpowerconsumptionchanges.Itsloadcapacitythanthepowerrequiredismuchgreater.Batteriestoprovideenergyisalsoaffectedbyenvironmentaltemperature.Andsolarcellsinordertomatchthejobrequirementsoflonglifebatteryandeasymaintenance.1BatterySelectionAndbeabletosupporttheuseofsolarcells,manydifferenttypesofbatteries,widelyusedatpresenthaveleadacidmaintenancefreebatteries,ordinaryleadacidbatteriesandalkalinenickelcadmiumbatteriesofthree.Domesticusearemainlymaintenancefreeleadacidbatteries,becauseofitsinherentfreemaintenanceofpropertiesandlesspollutingtotheenvironmentcharacteristics,itissuitablefortheperformanceofreliablepowersystemssolarpower,especiallyinunattendedworkstations.Ordinaryleadacidbatteriesrequireregularmaintenancebecauseofitslargerenvironmentalpollution,sothemainsuitableforthemaintenanceoftheabilityorhavetheuseoflowgradeoccasions.Althoughalkalinenickelcadmiumbatterieshavebetterlowtemperature,overcharge,takeoffperformance,butbecauseoftheirhigherprices,onlyappliestomorespecialoccasions.2CalculationofbatterycapacityBatterycapacitytoensurecontinuouspowersupplyisveryimportant.Atoneyear,themonthofmatrixgenerationhasverydifferent.Phalanxatthegeneratingcapacitycannotmeettheelectricityneedsofthemonth,torelyonbatterypowergivesupplementelectricityrequiredinmorethanmonth,arerelyingonbatteriestostoreexcessenergy.Phalanxsoinadequategeneratingcapacityandsurplusvalue,istodeterminethebasisforoneofthebatterycapacity.Similarly,thecontinuousovercastandrainydaysduringtheloadofelectricitymustalsobeobtainedfromthebattery.Therefore,thepowerconsumptionduringthisperiodtodeterminethebatterycapacityisalsooneofthefactors.