EffectsOfVoltageOp0miza0on

Presenta0onOutline

1. LegendPowerIntroduc0on2. WhatisVoltageOp0miza0on

• Conserva0onVoltageRegula0on

3. ElectricalHarmonizer‐AVRTechnology4. EffectsOnLigh0ngLoads5. EffectsOnMotorLoads6. FacilityAudit7. Measurement&Verifica0on8. CaseStudy–HondaCanada9. Conclusion

LegendPowerIntroduc0on

• LegendPowerisEnergyConserva0onCompany

• TargetCommercial&LightIndustrial

• CompletedR&DinJanuary2009• Completed20+pilotprojectinBC,OntarioandCalifornia

• Dr.WilliamDunford–CTOandinventoroftheAVR

• MarkPetersen–P.Eng,LeadEngineer

EnergyWasteFromHighVoltage

• U0li0escannoteffec0velyregulatevoltageontheen0regrid

• Somebuildingsreceivevoltageathigherlevelsthanothers

• Highvoltageresultsin:– energywaste

– largerenergybills

– unnecessaryGHGemissions

ElectricalHarmonizer‐AVR

126Volts

118Volts

PowerGenera6on

PowerDistribu6on Customer

VoltageOp6miza6on

WhatisVoltageOp0miza0onConserva0onVoltageRegula0on

• Duetolinelossresistancebuildingreceivehighervoltageatthebeginningoftheelectricalgrid

• VoltageOp0miza0onorConserva0onVoltageRegula0on,regulatesincomingvoltagetothelowerop0mallevel

126Volts 114Volts

WhatisVoltageOp0miza0onConserva0onVoltageRegula0on

• AllElectricalEquipmentisdesigntooperate+/‐5%ofratedvalue

• Voltageop0miza0onensuresequipmentisopera0ngnearthelowerlimit

• ReduceEnergyConsump0onby6‐10%• RealPowerReduc0on‐kW• Reac0vePowerReduc0onKVar• EnergyConsump0onReduc0onkWh

• IncreasethelifeofElectricalEquipment• ScienceWorlddoubledlifeexpectancyofexteriorbulbs

ElectricalHarmonizer‐AVRTechnologyHarmonizer

• Harmonizer=Autotransformer– 2%,4%,6%taps

– 99.98%Efficient• Canbeinstalledbeforethemeter

– 30Yearlifeexpectancy

– 300,000installedinJapan

ElectricalHarmonizer‐AVRTechnologyAutoma0cVoltageRegulator

• AVR–Automa0cVoltageRegulator– ElectronicTapSelector– U0lizeszerocrossingdetec0ontominimizetransients

• Reducesharmoniccontent

– Ratedfor1000Amps@600Volts– Includesfailsafebypasstoensureuninterruptedpowertoload

EffectsonResis0veLoads

• Hea0ngandLigh0ngLoads• Averagepowercaneasilybecontrolledviathevoltage,irrespec0veofthewaveform

• Instantaneouselectricalpowerconsump0on=voltagesquared

• Resistortemperaturechangesslowerthanvoltage

• Hea0ngLoads• Manyarethermosta0callycontrolled• Peakpowerwillbereduced• Averagepowerwillremainunchanged

EffectsonResis0veLoadsLigh0ngLoads

• ResponsiveLigh0ngLoads:• Incandescent

• T8andT12Fluorescent• CompactFluorescent

• MetalHalide

• HighPressureSodium

• FrontEndRegulatedBallast• Electronicallyregulatedloadsdonotrespondtovoltageop0miza0on

EffectsonMotorLoads

• Realpower‐kW• Mechanicaloutput

• ironandcopperlosses

• Reac0vepowerdrawntomaintainthemagne0cflux‐kVar

• Powerfactor

• Harmonics

• Effectsofvoltageop0miza0oniscomplex

EffectsonMotorLoads

• Nameplatecondi0onsdonotrepresentthemostefficientpointformotoropera0on

• highervoltageresultsin:• Increasedreac0vepowerdemand• Increasedharmoniccurrentflow.

• Increasedlossesintheironcore

• Overallmotorefficiencyandpowerfactorareusuallyincreasedbyreducingthemotorvoltagetoitsratedvalueorbelow

FacilityAudit

1. BillingReview

2. FacilityWalkthrough

3. VoltageOp0miza0onSimula0on

4. PowerQualityAnalysis

5. ProposalDelivery

Installa0on&Commissioning

• Typicallyonedaytoroughinandinstall

• Lessthanthreehoursofdown0me

• AVRcanbehotswappedtoavoiddown0meduringanyrequiredmaintenance

Measurement&Verifica0on

• Instantaneouseffectsofvoltagechangecaneasilybemeasured

• SoowareinstalledintheAVRforcesatapchange• executedevery30minutesforoneweek

• 48samplesperdayforoneweek

• Measurementsaretakenbeforeandaoereachtapchange

• kWhfortheweekdeterminedbysummingthe30minutesampleswhichwillyieldtheactualkWhusedandthekWhwhichwouldhavebeenusedwithouttheAVR

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

Conclusion

BookAnAudit:

Ifyouthinkyourfacilitymightbeagoodcandidate,wecanhelpyoudosomeofthepreliminaryinves0ga0ons.BookNow:

www.legendpower.com/energy‐audit/