legend power - effects of voltage optimziation
TRANSCRIPT
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EffectsOfVoltageOp0miza0on
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Presenta0onOutline
1. LegendPowerIntroduc0on2. WhatisVoltageOp0miza0on
• Conserva0onVoltageRegula0on
3. ElectricalHarmonizer‐AVRTechnology4. EffectsOnLigh0ngLoads5. EffectsOnMotorLoads6. FacilityAudit7. Measurement&Verifica0on8. CaseStudy–HondaCanada9. Conclusion
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LegendPowerIntroduc0on
• LegendPowerisEnergyConserva0onCompany
• TargetCommercial&LightIndustrial
• CompletedR&DinJanuary2009• Completed20+pilotprojectinBC,OntarioandCalifornia
• Dr.WilliamDunford–CTOandinventoroftheAVR
• MarkPetersen–P.Eng,LeadEngineer
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EnergyWasteFromHighVoltage
• U0li0escannoteffec0velyregulatevoltageontheen0regrid
• Somebuildingsreceivevoltageathigherlevelsthanothers
• Highvoltageresultsin:– energywaste
– largerenergybills
– unnecessaryGHGemissions
ElectricalHarmonizer‐AVR
126Volts
118Volts
PowerGenera6on
PowerDistribu6on Customer
VoltageOp6miza6on
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WhatisVoltageOp0miza0onConserva0onVoltageRegula0on
• Duetolinelossresistancebuildingreceivehighervoltageatthebeginningoftheelectricalgrid
• VoltageOp0miza0onorConserva0onVoltageRegula0on,regulatesincomingvoltagetothelowerop0mallevel
126Volts 114Volts
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WhatisVoltageOp0miza0onConserva0onVoltageRegula0on
• AllElectricalEquipmentisdesigntooperate+/‐5%ofratedvalue
• Voltageop0miza0onensuresequipmentisopera0ngnearthelowerlimit
• ReduceEnergyConsump0onby6‐10%• RealPowerReduc0on‐kW• Reac0vePowerReduc0onKVar• EnergyConsump0onReduc0onkWh
• IncreasethelifeofElectricalEquipment• ScienceWorlddoubledlifeexpectancyofexteriorbulbs
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ElectricalHarmonizer‐AVRTechnologyHarmonizer
• Harmonizer=Autotransformer– 2%,4%,6%taps
– 99.98%Efficient• Canbeinstalledbeforethemeter
– 30Yearlifeexpectancy
– 300,000installedinJapan
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ElectricalHarmonizer‐AVRTechnologyAutoma0cVoltageRegulator
• AVR–Automa0cVoltageRegulator– ElectronicTapSelector– U0lizeszerocrossingdetec0ontominimizetransients
• Reducesharmoniccontent
– Ratedfor1000Amps@600Volts– Includesfailsafebypasstoensureuninterruptedpowertoload
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EffectsonResis0veLoads
• Hea0ngandLigh0ngLoads• Averagepowercaneasilybecontrolledviathevoltage,irrespec0veofthewaveform
• Instantaneouselectricalpowerconsump0on=voltagesquared
• Resistortemperaturechangesslowerthanvoltage
• Hea0ngLoads• Manyarethermosta0callycontrolled• Peakpowerwillbereduced• Averagepowerwillremainunchanged
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EffectsonResis0veLoadsLigh0ngLoads
• ResponsiveLigh0ngLoads:• Incandescent
• T8andT12Fluorescent• CompactFluorescent
• MetalHalide
• HighPressureSodium
• FrontEndRegulatedBallast• Electronicallyregulatedloadsdonotrespondtovoltageop0miza0on
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EffectsonMotorLoads
• Realpower‐kW• Mechanicaloutput
• ironandcopperlosses
• Reac0vepowerdrawntomaintainthemagne0cflux‐kVar
• Powerfactor
• Harmonics
• Effectsofvoltageop0miza0oniscomplex
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EffectsonMotorLoads
• Nameplatecondi0onsdonotrepresentthemostefficientpointformotoropera0on
• highervoltageresultsin:• Increasedreac0vepowerdemand• Increasedharmoniccurrentflow.
• Increasedlossesintheironcore
• Overallmotorefficiencyandpowerfactorareusuallyincreasedbyreducingthemotorvoltagetoitsratedvalueorbelow
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FacilityAudit
1. BillingReview
2. FacilityWalkthrough
3. VoltageOp0miza0onSimula0on
4. PowerQualityAnalysis
5. ProposalDelivery
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Installa0on&Commissioning
• Typicallyonedaytoroughinandinstall
• Lessthanthreehoursofdown0me
• AVRcanbehotswappedtoavoiddown0meduringanyrequiredmaintenance
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Measurement&Verifica0on
• Instantaneouseffectsofvoltagechangecaneasilybemeasured
• SoowareinstalledintheAVRforcesatapchange• executedevery30minutesforoneweek
• 48samplesperdayforoneweek
• Measurementsaretakenbeforeandaoereachtapchange
• kWhfortheweekdeterminedbysummingthe30minutesampleswhichwillyieldtheactualkWhusedandthekWhwhichwouldhavebeenusedwithouttheAVR
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CaseStudyHondaCanada
FacilityProfile• 45%Ligh0ng
• 40%Motor&HVAC
• 10%OfficeEquipment
• 5%BaperyChargers
• AverageVoltage:610Volts
Results• AnnualkWhSavings:76,271
• AveragekWReduc0on:8.73
• PercentSavings:5.98%
• AnnualDollarSavings:$4,400($8,800Ontario)
• Op0mizedVoltage:575Volts
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Conclusion
BookAnAudit:
Ifyouthinkyourfacilitymightbeagoodcandidate,wecanhelpyoudosomeofthepreliminaryinves0ga0ons.BookNow:
www.legendpower.com/energy‐audit/