Update on energy saving opportunities in industrial electric文稿

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1、ESL-IE-86-06-129UPDATEONENERGYSAVINGOPPORTUNITIES~INDUSTRIALELECTRICALPOWERSYSTEMSbyJ.W.FrasureandC.J.FredericksDowEngineeringCompanyHouston,TexasABSTRACT%EnernLossCo"llonentatFuLoadHighelectricalpowercosts,rlslngatarateMlnMaxconsistentlyabovethatofgeneralinflation,OutdoorCircuitBrea

2、kers........0~2OJDIforcetheindustrialpowerusertocontinuouslyupdateandevaluateavailablemeansofsavingGenerators.....'...........0.0903.50electricalenergy.Thispaperprovidesasurveyofonecompany'sexperiencewithseveralmethods5and15kVSwitchgear0.0050.02ofenergyconservationinelectricaldistrib

3、utionsystems,anditspresentpracticesinthisarea.CurrentLimitingReactors......0.090.30Topicscoveredincludethelocationoflargeandreduciblelosses,thedeterminationoftheworthTransformers.............0.401.90oftheselosses,andasurveyofwaystoreducetheminaneconomicalmanner.LoadBreakSwitches0.003

4、0.02MediumVoltageStarters0.020.15INTRODUCTIONBusway(600voltandbelow)......0.050.50SincetheAraboilembargoof1973,wehaveseenadramaticincreaseintherelativecostofLowVoltageSwitchgear0.130.34electricity.Morerecently,theworthofonekWofelectricallosshasfluctuatedwildlywiththeMotorControlCente

5、rs.......O.Ol0.40priceofoi1.TheintentofthispaperistodescribeasystematicmethodthatelectricalCable......................1.004.00equipmentbuyersinindustrycanusetominimizecombinedequipmentandenergycosts.WiththisMotorssysteminplace,thebuyerispreparedforfuture1through10HP..........I0.0035.

6、00energypricehikes,andcanbeconfidentof10through200HP........6.0012.00findingagoodbalancebetweenenergyandcapital200through1500HP...........4.007.00costsinanyeconomiccircumstance.1500HPandup2.304.50Rectifiers(large)...........1.009.00GENERALAPPROACHTOTHEELECTRICALLOSSESPROBLEMStaticVar

7、iableSpeedDrives.....5.0015.00FindingLossesCapacitors(wattlosspervar)...0.502.00Electricallossesinanindustrialpowersystemarenotfoundin1argelumpsinone,ortwoLighting(lumensperwatt)......10.00180.00locations.Itwouldbefineiftheywere,butthisisnotthecase.Instead,theyarescatteredPercentener

8、gylossissimp