西萨摩亚5MW可研报告英文版 精品.docx

西萨摩亚5MW可研报告英文版 精品.docx

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西萨摩亚5MW可研报告英文版精品

FeasibilityResearchReport

Of5MWOn-GridPVPowerSystem

ProjectinSamoa

CEEG

2009-8-4

TableofContents

1.Generalintroduction

1.1Overview

1.2Solarenergyresourcesandgeographical/meteorologicalconditions

1.3Engineeringgeology

1.4Taskandscaleofproject

1.5Projectdesign

1.6Technicaldesign

1.7Fireprotection

1.8Organizationstructuredesign

1.9Engineeringmanagementdesign

1.10Environmentalprotectionandsoil/waterconservation

1.11Laborsafetyandindustrialhygiene

1.12Engineeringbudgetaryestimate

1.13Energysavingandemissionreductionbenefits

2.TheconstructionconditionsofSamoa

2.1Solarradiationcondition

2.2LocationTerm

2.2.1SiteLocation

2.2.2Constructionsiteconditions

2.2.3Geographicallandforms

2.2.4Geologysituation

2.2.5Siteconclusion

2.3Climatecharacteristic（providedbycustomer,needten-yearmeteorologicaldata）

3.ThebasicconditionsofelectricpowersysteminSamoa

3.1Basicconditionsofpowerconstruction

3.2Supplyconditionofpowersystem

3.3Demandconditionofpowersystem（needbalancetableofelectricpower）

3.4Theproblemofpowersystem

3.5Thedevelopmentplanofpowersystem

4.Designofsolarphotovoltaicpowerstation

4.1Designofsolararrays

4.1.1SelectionofPVmodules

4.1.2Theefficiencyevaluationofon-gridPVpowersystem

4.1.3Radiationcalculationoftheinclinedsurfaceofsolararray

4.1.4Series-parallelplanofPVsystem

4.1.5LayoutofPVarray

4.1.6Civilengineeringdesign

4.2DCcombinerboxdesignwithlightingprotectionforPVarray

4.3DCpowerdistributioncabinetdesign

4.4SelectionofPVgrid-tieinverter

4.5ACpowerdistributioncabinetdesignwithlightningprotection

4.6ACstep-uptransformerdesign

4.7Blockdiagramofsystemprogram

4.8Designofinterfacetopowergrid

4.9Programimprovements

4.10Constructiondesign

4.10.1Constructioncondition

4.10.2Transportationofconstruction

4.10.3Permanentlandforconstruction

4.10.4Mainpartofconstruction

4.10.5InstallationofPVarray

4.10.6Arrangementofconstruction

5.Environmentalimpactassessmentinconstructionphaseandmeasurementofemissionreduce

6.Publicbenefits

6.1Promotetouristindustry

6.2Createjobopportunities

7.Predictionofelectricitygeneration

7.1Electricitygenerationinfirstyear

7.2Electricitygenerationin25years

8.Investmentcostandrecovery

8.1Staticinvestmentevaluation

8.1.1Projectconstructioncostbudget

8.1.2Maintenancefee

8.1.3Totalstaticinvestment

8.2Revenueofelectricitygenerated

8.3Comparisonofstaticinvestmentandrevenue

8.4Recoveryofstaticinvestment

9.IntroductionofCEEG

1.Generalintroduction

1.1Overview

Samoa’s5MWon-gridPVdemonstrationprojectislocatedinPolynesia,thesouthernequatorialregion.Itsgeographicalcoordinates:

13.82°S,172.01°W,theaveragealtitudeof63m.Thesiteisopen,flat,easilyaccessibleandconvenient.（SpecificlocationcanbefoundintheattachedmapinFig.1.1）.

Fig.1ThelocationofPVpowerstation

ThePVpowerstationcoversaround100,000㎡withalengthof563mandawidthof180.5m.Accordingtotheanalysisofsolarenergyresourcespre-installedrequirementsandoptimizedlayout,17,920280Wmodules,998mm（width）×1956mm（length）foreachmodule,willbeinstalledinthe100,000㎡area.ThetotalcapacityofPVpowerstationis5.0176MWandwillgeneratearound7,752,900kWheachyear.

1.2Solarenergyresourcesandgeographical/meteorologicalconditions

Accordingtoregionalsolarradiationdataandanalysis,solarresourceintheprojectsitehasseveralfeaturesinthefollowingconclusions:

1.2.1TheprojectislocatedinrichsolarresourceareaofSamoa

AccordingtoNASAsolarradiationdatameasuredinthepast30years,theaverageamountofsolarradiationis6,908.1MJ/m2,theaveragehoursofsunshineare3,313hours.

1.2.2ChoosethebestangleofPVarraycaneffectivelyincreasetheamountofradiation

BasedontheNASAdatabaseonSamoa’sradiationwithdifferentinclinedangle,theoptimumforPVpanelinstallationis18.9°.ThenthePVpanelwillreceivemaximumradiationof7053.9MJ/m2throughouttheyear.

1.3Engineeringgeology

TheprojectSiteiscoveredbyplantbutnoriver,lakeinthearound.Thedistancetotheairportisabout400mandtheairporthighwayinthenorth.Noresidentsliveinthesurroundingarea,nordoesanyminingfactory.（Moreinformationisrequiredtobeprovidedbycustomers,focusedonthegeologyconditions,whichshouldmeettheconstructionrequirementandtheeffectonconstruction.）

1.4Taskandscaleofproject

ThelocationisidealforPVpowerplantbecauseoftherichsolarresource,convenienttransportandgridconnectioncondition.Samoa’s5MWon-gridPVdemonstrationprojectwilladheretotheprincipleofworldsustainabledevelopmentofenergy,inlinewiththenationalenergystrategywhichcallsforreducingconsumptionoffossilresourcesandharmfulemissionssuchascoal-firedpollution.Sothisprojectwillplayanimportantroleinpromotingthelocaltourismandlocaleconomicdevelopment.Therefore,thedevelopmentofthisprojectisvitalnecessary.

1.5Projectdesign

Thisprojectusesdistributedgenerationandcentralizedgridconnectionstrategy.Thewholesystemwillbedividedintofive1MWunitsandconnectstolocalgridat22kVvoltagepointthroughfive0.4/22kVtransformer.Thewholesystemhas17920280Wmono-crystallinePVpanels,theactualoutput5.0176MW.Foreach1MWsubsystem,therearefour250kWgrid-tieinverters.Each250kWinverterconsistsofoneDCpowerdistributionunit,inwhichthereis10DCcombinerboxwithlightningprotection,6inputsforeachcombinerboxandtotal56inputsfor1MWunit.Foreachinput,thereisonePVstringwith16panelsinseries.So1250kWinverterhas896PVpanelsinput,and3584PVpanelsinputfor4inverters.Attheoutputofeachinverter,thereisanACpowerdistributioncabinetwithlightingprotection,andconnectingtoa1250kVA0.4/22kVstep-uptransformer.

1.6Technicaldesign

1.6.1Mainpowersystemdesign

SiliconPVmoduleisCEEGSST280-72P,mono-crystalline,thestandardpowerof280W,thepeakvoltageof35.5V.Grid-tieinverterisSG250KTL,maximumpowertrackingvoltagerangeDC450V~880V,outputpower250kW,theoutputvoltage270V,Europeefficiency98.3%,total20grid-tieinvertersforPVpowersystem.

Five0.4/22kVdistributiontransformersconnectstoone22kVdistributionconnectingpoint,5inputand1output,thentolocal22kVclassgrid.

1.6.2Centralcontrolsystemdesign

ThedepartmentofelectricpowerinSamoawilltakechargeoftheprojectandtakefew-peopleattendedmethod.Tele-controlworkstationwillbeusedinthecontrolroomforinformationtransmissiontoandmonitoringfromdispatchingdepartment.Theautomationsystemachieves22kVline,themaintransformers,thecentralizedmonitoringanddispatchingdepartmenttele-controlmonitoringofACswitchcabinet.

20grid-tieinverterswillbeappliedintheproject.Themonitoringandprotectionofeachinverterisachievedbyitsinnerdetectingsystemandprotectiondevice.1setofenvironmentalmonitoringsystemisequippedtomonitortheenvironmentconditions.PowermeasurementofthePVpowerstationwillbeattheinterfacepointtothegrid.

1.6.3Communication

ThecommunicationofSamoa’s5MWon-gridPVpowerprojectincludessystemcommunication,administrationcommunicationandinnerstationdispatchcommunication.

1.6.4Construction

Thetotalcapacityoftheprojectis5.0176MWwith17920280Wsolarmodules,1120supportsoffixedinstallationstyle,five1250KVAtransformersandinterfacetogridthrough22KVclasspowerline.CivilengineeringofthePVpowerstationincludesbaseofPVmodules,fiveACandDCpowerdistributionrooms,comprehensivebuilding,comprehensivepumpingstation,sand-proofwall,insideroad,etc.Accordingto（GB50011-2001）,theComprehensiveBuilding,AC-DCpowerdistributionroom,andcomprehensivepumpingroomsbelongtoCcategories,seismicintensityof7degrees,thebasicdesignofthegroundaccelerationvalueof0.10g.

Accordingtositeconditions,solarmodulefollowsthebasisof50m/sdesign.SinglearraytakesconcretereinforcementandgradeofC25.Thebaseis0.4mmhigherthansiteaverage,thedepth0.6m,andtheconcretepouringofonepointis0.256m3.

ThePVpowerstationinthewindyarea,thecombinationofengineeringandbiologicalmeanswillbeadoptedforwindproofatthisstage.Thatis,building2.5mheightwallaroundthePVpowerstationandplantingpoplaroutsideofthewall.What’smore,PVmodules,supportsandbasesaresand-proofdesigned.

1.7Fireprotection

A.PVpowerstationisnotequippedwithfirefightingorganization,butapart-timefirefightershouldbeemployed.Atinitialstage,firewillbehandledbypersonnelfromtheinternalstation,andmeanwhilewithnotificationofthelocalfirebrigadetofightagainstfires;

B.Thefireengineeringdesignoftheprojectadoptstheintegratedfiretechnicalmeasuresincludethefireprevention,monitoring,alarm,control,firefighting,smokeexhaustion,andescape.Theaimistoreducethepossibilityoffire.Oncehappens,itcanbeextinguishedinashorttimeandthelosscanbereducedtoaminimum,whileensuringthesafetyoffireevacuation;

C.PVpowerstationfirecontrolroomisintegrateddesignedwiththemainbuildingcontrolroom;

D.Firefacilitiesandequipmentsaresetaccordingtotheimportanceofproductionandthedegreeoffirerisk;

E.FireservicephoneisinstalledforeachimportantsiteinPVpowerstation.

1.8Organizationstru