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1、电气设计的负荷计算方法及其应用范围（Loadcalculationmethodofelectricaldesignanditsapplicationrange）LoadcalculationmethodofelectricaldesignanditsapplicationrangeThecalculationmethodsofelectricloadincludedemandcoefficientmethod,coefficientofutilizationmethod,binomialcoefficientmethod,powercalculationp
2、erunitarea,calculationmethodofpowerperunitproductandsoon.(1)demandfactormethod:thecalculationloadiscalculateddirectlybymultiplyingtheequipmentpowerbytherequiredcoefficientsandthesimultaneouscoefficients;(2)themethodofcoefficientofutilization:theaverageloadofthemaximumloadclassisca
3、lculatedbythecoefficientofutilization,thentheinfluenceofthedifferencebetweentheequipmentplatformandthepowerdifferenceistakenintoaccount,andthemaximumloadfactorismultipliedtoobtainthecalculatedload;(3)binomialcoefficientmethod:loadisdividedintobasicloadandadditionalload,andthelatte
4、rtakesintoaccounttheinfluenceofacertainamountoflargecapacityequipment;(4)perunitarea,powerunitmethod,indexmethod,unitpowerconsumptionmethod,canbeusedforpreliminarydesignforestimatingconsumptionindicators,forresidentialconstruction,invariousstagesofdesigncanusepowerperunitarea.Thei
5、rrangeofapplicationisdifferent.Accordingtothecodeforelectricaldesignofcivilbuildings3.4.2.1.,theunitindexmethodcanbeadoptedinthedesignstage,andthedemandfactormethodshouldbeadoptedinthepreliminarydesignstage."Visible:civilbuildingelectricalloadcalculationrecommendedneedcoefficientm
6、ethod;thisisbecauseinthecivilbuildingelectricalequipmenthaslittlepowerequipmentespecially,accordingtothedemandcoefficientmethodissimple;andintheindustrialbuilding,becausetheequipmentforpowersavegreatdifference,calculatedandactualvarygreatlywithdemandcoefficientmethod.Forexample,aw
7、orkshopuseselectricalequipmentasfollows:Electricweldingmachine25sets,poweris:3.0KVA*8;8KVA*6;16KVA*5;30KVA*2;=50%;180KVA*2;200KVA*2;epsilonFan:50units,poweris:2.2KWMachinetools:66units,poweris:7.5Kw*30;15KW*30;30KW*2;90KW*2;45KW*2;Crane:2units,respectively15KW,22KW.Thetotalpowerdi
8、stributionloadscalculatedinthiswo
