presentation overview uh 0.6m telescope & uh 0.9m telescope problem: telescope control software...

Developing PHEV Charging Load Profile Based on Transportation Data Analyses Developing PHEV Charging Load Profile (PCLP) • PHEV: Plug in Hybrid Electric Vehicle • PCLP: PHEV Charging Load Profile The amount of electricity demanded for charging PHEVs in a specification region at any given time. Student(s) : Zahra Darabi, Electrical and Computer Engineering Background • Three key questions : i. when each vehicle begins to be charged, ii.how much energy is required to charge it, iii.what level of charge is available. • In Previous studies: • Total load profiles with and without PHEVs were compared • Main objective has not been the building of a PCLP • There was no detailed information about the data on which those profiles are based • A load demand schedule of PHEVs was provided but the time of day at which vehicles are charged is not indicated. • The most comprehensive reference for transportation data is the National Household Travel Survey (NHTS) Base of PCLP- Daily Mileage • The most common mileage is in the range of 25-30 miles. 55% of vehicles are driven 30 30 miles daily or less • Utility Factor (UF) is the fraction miles driven by electricity. • Electric Range Utility Factor (ERUF) is the ratio of miles driven by electricity to Faculty Advisor(s) : Dr. Mehdi Ferdowsi, Electrical and Computer Engineering Base of PCLP- Daily Mileage • State Of Charge (SOC) is the percentage of charge remaining in the vehicle when it arrives. The SOC of a vehicle can be determined based on miles driven and the electric range (x) of the PHEV. Base of PCLP- Arrival Time • The peak arrival time is between hours 16 and 22. Developing PCLPs • Total power (t)= Power required by vehicles arriving at (t) + Power required by vehicles that have arrived since (t-n) • Battery Utility Factor (BUF) is the fraction of total electricity consumed. • Two approaches produces almost identical PCLPs • Most of the time the PCLP of PHEV40s overlies those of PHEV30s and PHEV20s • 11:00 to 17:00 PCLPs are almost the same • Peak time of PCLPs is 18:00 to 23:00 • The PCLP of PHEV30s is closer to that of PHEV40s • Larger PHEV results better UF and peak time, but worse ERUF, BUF, and peak load Base of PCLP- Vehicles Type • The first four types of vehicles are selected for this study Type 1 is the most common is vehicle type. are • The four PHEV types are mapped to the four types of the 2001 NHTS data • The energy required of four types of PHEV20 • The average kWh/mile is 0.37 (based on the number and kWh/mile of each vehicle types). Improving Policies based on PHEV30 • PCLPs of various charging levels • As the charging level increases: ∙ the peak point moves to the left ∙ the peak value rises • Policy 1: Vehicles, arriving between 0:00 and 16:00, get charging level of 7.68 kW and the rest get that of 1.4 kW • Policy 2: Vehicles, arriving after 16, are charged 2 hours later Charging Levels & Charging Schedule • Three charging levels based on two references • Fully charging schedule (based on the charging level 1) Two approaches to scale charging schedule based on SOC • Power scaling approach scales the electric power delivered to each vehicle at each hour. (constant time ) • Time scaling approach considers maximum power available at each time and scales the total energy FUTURE WORK • Developing smart charging profile • Defining attributes for PCLPs • Quantitative assessments of PCLPs • Determining probability distributions for the three sides of the PCLP prism based on NHTS data • Developing probabilistic PCLPs • This work has been partially supported by the Intelligent Systems Center at the Missouri University of Science and Technology Acknowledgements 0 5000 10000 15000 20000 25000 30000 35000 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 kW Tim e ofday PHEV20 PHEV30 PHEV40 0 5000 10000 15000 20000 25000 30000 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 miles Tim e ofday PowerScaling Tim e Scaling 0 1000 2000 3000 4000 5000 6000 0-5 5_10 10_15 15-20 20-25 25-30 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 95-100 >100 N o.ofvehicles M iles 0 20 40 60 80 100 5.00 10.00 15.00 20.00 25.00 30.00 35.00 40.00 45.00 50.00 55.00 60.00 65.00 70.00 75.00 80.00 85.00 90.00 95.00 100.00 % x(miles) UF ERUF 0 10 20 30 40 50 60 70 80 90 100 0-5 5_10 10_15 15-20 20-25 25-30 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 80-85 85-90 90-95 95-100 >100 % of vehicles Miles 0 200 400 600 800 1000 1200 1400 1600 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 No. of Vehicles Tim e ofday V ehicle Type 1 2 3 4 N um ber 23,881 4,686 5,139 5,536 Percentage 60.85% 11.94% 13.1% 14.11% Type TotalkW h kW h/mile Com pactSedan 6.51 0.3255 M id-size Sedan 7.21 0.3605 M id-size SU V 8.75 0.4375 Full-size SU V 10.15 0.5075 Typesofvehiclesin N H TS 01 Autom obile/car/station wagon 02 V an (m ini, cargo, passenger) 03 Sportsutility vehicle 04 Pickup truck 05 Othertruck 06 RV (recreationalvehicle) 07 Motorcycle 91 O ther Level R eference 1 2 3 EPRI-NEC 120V A C, 15A (12A ) 1.44 kW 240V AC,1phase, 40A 480V A C,3phase, 60 to 150 kW SA EJ1772 120V A C, 12A , 1phase 1.44 kW 208-240V A C, 1phase 32A, 6.66-7.68kW 208-600V A C, 3phase, 400A , >7.68 kW H our Type 1 2 3 4 5 6 7 8 Total kW h 01 1.4 1.4 1.4 1.4 0.91 0 0 0 6.51 02 1.4 1.4 1.4 1.4 1.4 0.21 0 0 7.21 03 1.4 1.4 1.4 1.4 1.4 1.4 0.35 0 8.75 04 1.4 1.4 1.4 1.4 1.4 1.4 1.4 0.35 10.15 PH EV 20 PH EV 30 PH EV 40 M ilesdriven by electricity 671,888 903,423 104,409 UF 0.522 0.703 0.812 ERUF 0.856 0.767 0.665 Consum ed total electrical energy ( kW h) 249,469.8518 336,026.5069 389,086.33675 BUF 0.859 0.771 0.669 Peak load (kW ) 25000 30000 32000 Peak tim e 20:30 21:45 22:00 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 kW Tim e ofday 1.4kW policy1 7.68kW Policy2 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 kW Tim e ofday 1.4kW 7.68kW 2kW 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 kW Tim e ofday 1.4kW 7.68kW policy1

presentation overview uh 0.6m telescope & uh 0.9m telescope problem: telescope control software...

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