Bi-Level Demand-Sensitive LED Street Lighting Systems (EW 201017) - PowerPoint PPT Presentation

Bi-Level Demand-Sensitive LED Street Lighting Systems (EW 201017) Dr. Saifur Rahman Virginia Tech – Advanced Research Institute Project Outbrief September 5, 2013

Project Team ! ! Dr. Saifur Rahman (PI), Virginia Tech ! ! Dr. Manisa Pipattanasomporn (co-PI), Virginia Tech ! ! Dr. Isaac Flory (co-PI), Old Dominion University

Technical Objectives ! ! To design, develop and demonstrate an energy efficient bi-level demand-sensitive LED street lighting system The streetlight Returned to full will be dimmed intensity when traffic at night is detected. ! "#$%&#'()$#*+! ,($%-(./0!/1!23#!#45#62#-!/5#'(./0($!(0-!#6/0/7%6!)#0#82*! • ! 9&($:(./0!/1!2#630/$/;<!(66#52(06#!(0-!#0-=:*#'!1##-)(6>! • ! "#&#$/57#02!/1!;:%-#$%0#*!(0-!8#$-!#45#'%#06#!-(2(!2/!'#5$%6(2#!23%*!5%$/2! • ! %0*2($$(./0!%0!/23#'!"/"!1(6%$%.#*!

Technology Description 3. Traffic/photocell sensors 4. Smart Server 2. Streetlight 1. LED controller Technology components: 1. ! LEDs 2. ! Streetlight controllers 3. ! Traffic/light sensors 4. ! Smart server 4

Uniqueness of the Work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

Performance Objectives Performance Data Success Metric Results Objective Requirements Criteria 1. Quantitative Performance Objectives Reduction in - Electricity saving (kWh) Power > 50% electricity ~ 74% electricity Electricity usage measurements saving savings (kWh) (V, A, kW, kVAR, PF) Annual electricity > 50% reduction in ~ 74% CO 2 emission Reduction in consumption (kWh) carbon footprint reduction Carbon foot print - CO 2 emission (lbs) and emission rate (lbs of CO 2 ) (lbs/kWh) - Net present value (NPV) Capital costs and - NPV LED < NPV HPS - NPV LED < NPV HPS Lower cost of - ! Savings to inv ratio (SIR) O&M costs - SIR >= 1.5 - SIR = 2.02 ownership over the - ! Payback period - Payback <= 7 yrs - Payback = 6 yrs life time - ! Adjusted internal rate of - AIRR >= 5% - AIRR = 9.19% return (AIRR) Illumination Average luminance >= 1.40 fc @ 100% Illumination levels - Illumination levels (fc) measurements (fc) 0.8 fc 0.86 fc @ 60% Color temperature Correlated color Color temperature CCT of 4000°K > 4000°K performance temperature (CCT in °K) measurements (°K) compared to existing CCT of 1600-2100°K Reduction in Amount of mercury saving Amount of mercury in 100% reduction in 100% reduction mercury waste (mg) existing lamps (mg) mercury disposal requirements

Performance Objectives (cont’d) Performance Data Success Metric Results Objective Requirements Criteria 2. Qualitative Performance Objectives - Survey and feedback Feedback from Positive feedback and Positive - Color photographs individuals, including high level of user feedback; high level of comfort, light User acceptance satisfaction level of user and light quality quality, retrofit ability; satisfaction; better light Color photographs quality and before and after the lower light installation pollution 3. Operational Performance Objectives The amount of time the System logs that > 95% availability 100% availability System availability system is operational or record LED output ready to operate performance The amount of time the System logs that > 95% reliability 100% reliability system performs as record LED output System reliability designed performance

Demonstration Site Building 80 ! $" %" ! '" #" (" ! )" !" ! &" Completed installation in January 2012 Technology components QTY Locations 1 LED light fixtures 8 Installed at existing light poles 2 Streetlight controllers 8 Installed inside the LED fixtures 3 Traffic sensors 4 Installed at the locations marked by X 4 Smart server 1 Building 80 8 5 Network mgnt center 1 Building 80

Technology Integration and Controller Development SmartServer/ PLC Interface For managing the LED street lighting system Outdoor Light Controller (OLC) For controlling the ON/OFF and dimming of LED fixture Smart Server PLC Interface 9

Technology Integration and Controller Development (Cont’d) :P.-.,833" %O0P+1183"B.C.1" @G"42+157;55;.1" QK;-,P" D8-8,-.2"@8,8;<82" ?%$$HI#BJ9A"" 9.18"!" 9.18"#" 9.18"$" 9.18"%" B.C.1"D8-8,-" :+55;<8"=162+28>"?:=@A"B.C.1" Q;U1+3"!#*.3-5" D8-8,-.25E42+157;F825" S.27+33R"TN81" @83+R"0.1-+,-" X182UR">+-+" 3.UU82" ;LTS"Q7+2-" #%"*+,"QMNN3R" :.K82" Q82<82" -.":P.-.,833" L;18" QK;-,P" 0.MN382" #%" *+," 9.18"!" 9.18"#" 9.18"$" 9.18"%" #))"*+,"-."!#/"*+," 0.1-2.3"42+156.2782" L1 Traffic !#/" Counters *+," 0;2,M;-" 8 Lamps !#/"*+," #))"*+," V28+W82" N 120Vac to 24 Vac G Control Transformer 10

Demonstration Results 1. Electricity savings 2. CO 2 emission savings 3. Illumination levels 4. Color temperature performance 5. Reduction in mercury waste 6. User acceptance and light quality 7. System availability 8. System reliability 9. Cost of ownership 11

1. Electricity Savings S&#'(;#!#$#62'%6%2<! 5+<;1U5".6")'Y" B(*!#45#'%#06#-!(T#'!23#!%0*2($$(./0U!! Total 14,953 kWh 3,893 kWh Annual savings = 11,060 kWh

2. CO 2 Savings S&#'(;#! 0T # "5+<;1U5".6")'Y" B(*!#45#'%#06#-!(T#'!23#!%0*2($$(./0U!! " Annual HPS " LED " savings " Annual 11,060 kWh Electricity 14,953 kWh ! 3,893 kWh ! (~74% savings) ! Consumption ! 16,081 lbs Annual CO2 21,742 lbs ! 5,660 lbs ! emission (~74% savings) ! DPV!6/0&#'*%/0!1(62/'!1/'!L('<$(0-!/1!WUXHX!$)*O>M3!B(*!:*#-U!

3. Illumination Assessment HPS Min: 0.32 fc Max: 8.5 fc LED @ 100% Min: 0.53 fc Max: 2.74 fc LED @ 60% Min: 0.32 fc Max: 1.65 fc

HPS vs LED Illumination Measurement (foot candle) B=S" BZ[" Z*X" Z*XEB=S" BZ[EB=S" J:Q" IUYV! ZUHI! VUVX! [UII! V\UH\! LXD"\"!//Y" IUHY! VU[X! WUXI! VU\X! HUW[! LXD"\"(/Y" IUYV! WU\H! IUZ\! VU\Z! HUW\! L:63!)#a#'!$%;32!$#&#$! L:63!)#a#'!$%;32!:0%1/'7%2<! ]3#!0#B$<!%0*2($$#-!?9"!*2'##2!$%;3.0;!*<*2#7!7##2*+! • ! " ! E#6/77#0-#-!S,9!7(%02(%0#-!$:7%0(06#!&($:#*!1/'!6/$$#62/'!'/(-*!%0!6/77#'6%($! ('#(*!/1!IUZ!16^! " ! E#6/77#0-#-!S,9!2/!LFQ!&($:#!/1!X!2/!W^! " ! E#6/77#0-#-!LS_!2/!LFQ!&($:#!/1!Z!2/!W^! ^!)(*#-!/0!23#!F$$:7%0(.0;!90;%0##'%0;!N/6%#2<!/1!Q/'23!S7#'%6(!CF9NQSG!7#(*:'#7#02! ;:%-#$%0#!?L=HI=``U! ]3%*!%75$%#*+! • ! " ! ?9"!5'/&%-#*!)#a#'!%$$:7%0(./0!(0-!$:7%0(06#!:0%1/'7%2<!(*!6/75('#-!2/!23#! 15 #4%*.0;!@bN!$(75*U!

4. Color Temperature Performance Min: 1600°K HPS Max: 2140°K Area with no light pollution: 1600°K-2140°K LED @ 100% Min: 2510°K* Max: 5800°K Area with no light pollution: 4300°K-5800°K LED @ 60% Min: 1600°K* Max: 5850°K Area with no light pollution: 4700°K-5850°K * Due to light pollution from the HPS unit at Building A

5. Reduction in Mercury Waste (mg) !//Y"782,M2R"K+5-8"28>M,C.1" %*!/)*#'&#-!(*!?9"!-/#*!0/2!6/02(%0! 7#'6:'<! Base case Alternative Savings from (HPS) (LED) Alternative Amount of mercury/bulb 11-30 mg 0 mg 11-30 mg/lamp Amount of mercury during 8 bulbs every 3 the study period of 12 - 352-960 mg years = 32 bulbs years

6. User Acceptance and Light Quality A survey was conducted during the week of April 9-16, 2013. 1. How satisfied are you with the overall performance of LED lighting? 100% very satisfied 2. How satisfied are you with the visibility improvement offered by the LED streetlights for you as a driver? 100% very satisfied 3. How satisfied are you with the visibility improvement offered by the LED streetlights for you as a pedestrian? 100% very satisfied 4. Do you feel that the new streetlights give off the right amount of light, or are they too bright or too dim? 100% Right amount of light

7. System Availability The availability of the overall system was derived from the availability of each component. All system components (LED luminaires, streetlight controllers, SmartServer and traffic/photocell sensors) demonstrated no failure during the post-installation monitoring. This implies 100% system availability.