中英文翻译--光伏系统设计.doc

PhotovoltaicSystemDesign1IntroductionAfterPVworkersunremittingefforts,solarcellproductiontechnologyconstantlyimprove,andincreasinglywidelyusedinvariousfields.Postsandtelecommunicationsinparticular,thetelecommunicationsindustryinrecentyearsbecauseoftherapiddevelopmentofcommunicationpowerrequirementshavebecomemoresophisticated,sostableandreliablepowerSolarenergyiswidelyusedincommunications.Andhowthevariousregionsofsolarradiationconditions,tothedesignofbotheconomicandreliablephotovoltaicpowersystem,whichisoneofthemanyexpertsandscholarsstudythelong-standingissue,buttherearemanyexcellentresearchresults,forthedevelopmentofChinasphotovoltaiclaidasolidfoundation.Theauthorofthestudyatthedesignmethodologyofexpertsfoundthatthedesignhasonlyconsideredtheself-maintenanceofbatterytime(thatis,thelongestconsecutiverainydays),withouttakingintoaccountthelossofelectricbatteriesassoonaspossibleaftertherecoverytime(ie,twosetsofthelongestcontinuousraindays,theshortestintervalbetweenthedays).ThisproblemparticularlyinthesouthernChinaregionshouldpaygreatattentiontothesouthernregionbecauseofourrainydayislongtoo,andfortheconvenienceofindependentphotovoltaicpowersystem,becausethereisnootheremergencybackuppowerprotection,sothisproblemshouldbeincludedinthedesignconsideredtogether.Inthispaper,anintegrateddesignmethodofthepreviousadvantages,combinedwiththeauthorovertheyearsactuallyengagedinthedesignofphotovoltaicpowersystemsexperience,theintroductionoftwosetsofthelongestconsecutiverainydays,theshortestintervalbetweenthenumberofdaysasthebasisforthedesignofone,andcomprehensiveconsiderationofthetheimpactofsolarradiationconditionsofthefactorsthatmadesolarcells,theformulaforcalculatingbatterycapacity,andrelateddesignmethods.2ManyfactorsaffectthedesignSunsolarcellsonthegroundsquareontheradiationoflightspectrum,lightintensitybythethicknessoftheatmosphere(ieairquality),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.Characteristicsare:thedatausedinmostpreviousstatisticaldata,thestatisticaldatameasurementanddataselectionareimportant.Designersofthemissionare:Inthesolarcellmatrixundertheconditionsoftheenvironment(thatis,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,theloadshouldincludeallpowersystemdevices(exceptforusebutalsohaveabatteryandelectricalcircuits,controllers,etc.)consumption.Matrixcomponentsoftheoutputpowerandthenumberofseries-parallel,andseriesarerequiredinordertoobtaintheoperatingvoltage,inparallelarenecessaryinordertoobtainthecurrentwork,anappropriatenumberofcomponentsthroughwhichthecompositionofseries-parallelconnectionofsolarcellsrequiredphalanx.3DesignedcapacityofbatteriesSolarcellpowersupplysystemisthebatteryenergystoragedevices.AndsolarcellbatteriesareusuallysquarematchingjobatFloatingstate,withthesquareofitsvoltageoutputandloadpowerconsumptionchanges.Itsloadcapacitythanthepowerrequiredismuchgreater.Batteriestoprovideenergyisalsoaffectedbyenvironmentaltemperature.Andsolarcellsinordertomatchthejobrequirementsoflonglifebatteryandeasymaintenance.(1)BatterySelectionAndbeabletosupporttheuseofsolarcells,manydifferenttypesofbatteries,widelyusedatpresenthavelead-acidmaintenance-freebatteries,ordinarylead-acidbatteriesandalkalinenickel-cadmiumbatteriesofthree.Domesticusearemainlymaintenance-freelead-acidbatteries,becauseofitsinherent"free"maintenanceofpropertiesandlesspollutingtotheenvironmentcharacteristics,itissuitablefortheperformanceofreliablepowersystemssolarpower,especiallyinunattendedworkstations.Ordinarylead-acidbatteriesrequireregularmaintenancebecauseofitslargerenvironmentalpollution,sothemainsuitableforthemaintenanceoftheabilityorhavetheuseoflow-gradeoccasions.Althoughalkalinenickel-cadmiumbatterieshavebetterlow-temperature,over-charge,take-offperformance,butbecauseoftheirhigherprices,onlyappliestomorespecialoccasions.(2)CalculationofbatterycapacityBatterycapacitytoensurecontinuouspowersupplyisveryimportant.Atoneyear,themonthofmatrixgenerationhasverydifferent.Phalanxatthegeneratingcapacitycannotmeettheelectricityneedsofthemonth,torelyonbatterypowergivesupplement；electricityrequiredinmorethanmonth,arerelyingonbatteriestostoreexcessenergy.Phalanxsoinadequategeneratingcapacityandsurplusvalue,istodeterminethebasisforoneofthebatterycapacity.Similarly,thecontinuousovercastandrainydaysduringtheloadofelectricitymustalsobeobtainedfromthebattery.Therefore,thepowerconsumptionduringthisperiodtodeterminethebatterycapacityisalsooneofthefactors.