电气外文文献及翻译.docx

《电气外文文献及翻译.docx》由会员分享，可在线阅读，更多相关《电气外文文献及翻译.docx（15页珍藏版）》请在优知文库上搜索。

1、Powersupplysystemofhigh-risebuildingdesignAbstract:Withthecontinuousdevelopmentofcitysize,moreandmorehigh-risebuildings,therefore,high-risebuildingelectricaldesigntothedesignershadtoface.Inthispaper,anengineeringexample,describestheelectricaldesignofhigh-risebuildingsandsomeofthemoretypicalissuesofu

2、niversalsignificance,combinedwiththeactualpracticeofanengineeringsolutiontotheproblemdescribed.Keywords:high-risebuilding;electricaldesign;distribution;loadcalculation1 ProjectOverviewThecommercialcomplexproject,withatotalconstructionareaof405570m2,onthegroundfloorareaof272330m2,undergroundconstruct

3、ionareaof133240m2,themainheightof99m.Projectcomponentsare:twoofficebuildings,constructionareais70800m2,28layers,thestandardstoryis3.2m.2 1.oadCalculation1) 1.oadcharacteristics:electricload,muchlargerthanthe,nationalcivilengineeringtechnicalmeasures*1.arge120Wm2indicators,especiallyintheelectricityl

4、oadmorefood,anddifferenttypesoffoodandbeveragecateringdifferentculturalbackgroundsalsohigh.2) theuncertaintyofalargeload,becausethecommercialrealestaterentsareoftenbasedonmarketdemand,andconstantlyadjustthenatureoftheshops,makingtheloadinthedynamicchanges.3) Thereisnospecificationandtechnicalmeasure

5、sinthedifferenttypesofcommercialprojectsrefertothedetailedparametersoftheshops,engineeringdesignloadcalculationinthelackofdata,inmostcasestorelyonstaffwithpreviousexperienceinengineeringdesigncalculations.1.oadtheselectionofparameters:fortheaboveproblems,theloadcalculation,thefirstdeveloperofsalesan

6、dgoodcommunication,todeterminetheformoflayersoftheformsandnatureoffloorarea,whichiscalculatedonthebasisofelectricalloadbasis;followedtodetermineparameterindexwithintheunitareaofshopsisalsoveryimportantandcomplexbecausethereisnoclearindicatorofthespecificationcanreferto;anddifferentlevelsofeconomicde

7、velopmentbetweencitiesisnotbalanced,powerindicesarealsodifferent;willbeinthesamecity,differentregionshavedifferentconsumergroups.4) theneedtofactorinthechoice:parametersdetermined,theneedforloadcalculation.Needtofactorcommonlyusedmethod,thecalculationwillnotrepeatthem.Needtoexploreistheneedforcoeffi

8、cientselection,whichinthecurrentspecifications,manualsandtheunifiedtechnicalmeasuresisalsonotclearrequirements,basedonyearsofdesignexperiencethatmostendshopsinthedistributionorlevelwithinthehouseholddistributionboxwithcaseKxgenerallytakeawhile,inthecalculationofthelooproutetotake0.7to0.8,thedistribu

9、tiontransformersinthesubstationcalculationstake0.4to0.6.3 substationsset1.oadcalculationbasedontheresultsofthisprojectthetotalinstalledcapacityoftransformer43400Kv.A,afterrepeatedconsultationswiththepowercompany,respectively,intheprojectinnorthern,centralandsouthernthreesectionssetthethreebuildingsi

10、ntothreepowersubstations,1#set6sets2500Kv.Atransformersubstation,takethenorthernsectionofpowersupply;2#41600Kv.Atransformersubstationslocated,plus6sets2000Kv.Atransformers,takethemiddleofthepowersupply,inadditionto5Taiwan10Kv.Ahigh-pressurewaterchillers(total4000Kv.A);3#substationlocated2unitsplus2u

11、nits1000Kv.A2000Kv.Atransformers,takethesouthernsectionofA,Btwoofficesupply.IOKvpowerconfigurationofthisprojectintotwopoints,eachatthetwoIOKvlines,thepowercompanyundertheprovisionsofIOKvpowercapacity:maximumloadperchannelisaboutto11000Kv.A,twoisthe22000Kv.A,design#1,3#combinationofasubstation10Kv,po

12、werline,withatotalcapacityof21000Kv.A;2#substationtransformersand10Kv,IOKvchillerssharingapowerline,withatotalcapacityof22400Kv.A.Thedesignofthesubstationlayout,inadditiontomeetingregulatoryrequirements,italsoneedtoconsiderthehigh-pressurecabinets,transformersandlowvoltagepowersupplycabinetbyorderof

13、arrangement,especiallyinlowvoltagedistributioncabinettofeedthecablesmoothandeasyinspectiondutyproblemsarenotseriouslyconsidertheconstructionofthecablecrossingwillcausemorelongdetour,awasteoffloorspace,andconvenientinspectionsandotherissues.4 smallfireloadpowersupplyInthedesignoflargecommercialprojec

14、tsoftenencountersmallfireloadofelectricalequipmentandmoredisperseddistribution,iffedbyasubstation,asubstationwillbefedalotoflow-voltagelow-currentcountercircuitbreakingcapacitycircuitbreakerandconductorofthedynamicandthermalstabilityinacertainextent.AccordingtoGB50045-199511fireprotectiondesignoftal

15、lbuildings,nrule11shouldbeusedinFireEquipmentdedicatedpowersupplycircuit,thepowerdistributionequipmentshallbeprovidedwithclearsigns.Interpretationoftheprovisionsofthepowersupplycircuitmeansfromthelow-voltagemaindistributionroom(includingthedistributionofelectricalroom)tolastadistributionbox,andthege

16、neraldistributionlinesshouldbestrictlyseparated.,Inthisdesign,theuseofmethodstoincreasethelevelofdistribution,thatisdifferentfromthesubstationbussegments,respectively,afirefedaspecialcircuit,setinplacetwodistributioncabinets,distributioncabinetsandthentheresultingradialallocatedtotheendofthedualpowertovoteeachbox,sothatnotonlymeetsthespecificationrequirementsfordedicatedpowersupplycircuit,butalsotoavoidfeedingthesubstationlevelofmanysmallcurrentloop.5 ,thechoi