Solar/Wind Hybrid Renewable Power Generator for Powering Rural Dynamic Message Sign

Transcription

1 Solar/Wind Hybrid Renewable Power Generator for Powering Rural Dynamic Message Sign Taek Kwon (Prof.) and Ryan Weidemann (GRA) University of Minnesota-Duluth Ray Starr, Kevin Schmidt and Roger Sowder Minnesota Department of Transportation

2 Outline Introduction Renewable light pole Renewable power station for DMS Conclusion

3 ENTERPRISE Program A pooled-fund organization with member agencies in US, Canada, and Netherlands Support jointly-sponsored ITS projects of shared interest Provide test beds in a variety of environments and locations for emerging ITS technologies Identify common needs within the group and proceed with appropriate technical activities

4 ENTERPRISE Members Arizona Department of Transportation Colorado Department of Transportation Dutch Ministry of Transportation Federal Highway Administration Iowa Department of Transportation Kansas Department of Transportation Ministry of Transportation of Ontario Minnesota Department of Transportation Transport Canada Virginia Department of Transportation Washington State Department of Transportation

5 Why Solar/Wind Hybrid? Complementing resources Lack of winds but more sunlight in summer Lack of sunlight but more winds on bad weather System Redundancy If PV breaks down, wind still generates power, or vice versa. Increased power and system reliability

6 Renewable Light Pole

7 Lighting at Night

8 November 18, 2006 Rainy, windy, and cloudy

9 December 31, 2006 Ice and snow storm

10 June 12, 2007 Sunny, calm, and no precipitation

11 June 19, 2007 Sunny, windy, and no precipitation

12 Renewable Power Station DMS Project Tasks Analyze DMS power requirements Develop prototype renewable power station Design controller Install prototype unit at rural location Collect data and evaluate prototype system Develop design and procurement specs Final Report

13 Rural Power Station Site Hwy 371 at 250 th St., south of Ft. Ripley, MN Rural location T intersection Power station in SE quadrant VMS in NW quadrant

14 Renewable Power Station Site

15 Project Location

16 Summer Solar Energy

17 Winter Wind Energy

18 Available Solar/Wind Energy Solar Radiation KWh/m2/day during the summer KWh/m2/day during the winter Wind Density Class 2 during the summer: W/m 2 Class 3 during the winter: W/m 2

19 DMS and Control Cabinet

20 DMS Sign & Controller ADDCO Brick 3 Line x 12 Character 5x7 Pixels per Character, 8 LEDs per Pixel 80 Watts Idle 258 Watts on 35 bricks ON Amber Monochrome Roadside Mounted

21 Battery Bank

22 Battery Bank 6V 220Ah AGM deep cycle batteries 32 batteries Total 42,240Wh Capacity Provide 7 days of power without charge for DMS Cabinet Custom designed Insulated and ventilated

23 Solar Panel

24 Three Solar Panels 3 * 170W=510W Max Three panels in series connection Charge controller converts 23*3=69V to 48V

25 Solar Panel Controller OutBack MX60 Maximum Power Point Tracking (MPPT) charge controller Standby power consumption: less than 1W Set to 48V charge system 60 Amp max current

26 Wind Turbine and Controller Whisper 200, Southwest Windpower 1,000W at 26mph

27 AC Inverter Outback VFX3638 Off-Grid Inverter 48V DC to 120AC/60Hz 3,600W Cont., 6,000W surge Idle power: 23W

28 AC Inverter Experience ExelTech XP Vac sine wave 60Hz, 600W Cont, 1,100W Surge, idle 8W Intermittent error ExelTech XP Vac sine wave 60Hz, 1,100W Cont, 2,200W Surge, idle 20W Critical failure, repaired from factory

29 Power Monitoring System TS-7260 Single Board Computer (SBC) manufactured by Technological Systems Large flash memory capable of storing more than 10 years of data Real-time clock for time-stamping of the data Measure currents using shunts A/D Converter PentaMetric manufactured by Bogart Engineering No memory 24/7 continuous monitoring

30 Power Monitoring System

31 Installation (1)

32 Installation (2)

33 Installation (3)

34 After Installation

35 Cost Description Qty Unit cost Extended Solar panel 3 $839 $2,517 Wind turbine w/ Controller 1 $2,521 $2,521 Battery 32 $187 $5,980 Mounting Pole 1 $5,786 $5,786 Inverter 1 $1,899 $1,899 Power data logger 1 $5,94 $5,94 Battery cabinet 1 $1,900 $1,900 Pole foundation 1 $5,270 $5,270 Misc cables, shunts $360 $360 Total $30,003

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39 Sign Tests (7/2-8/21,08) 7/7 12:05pm 7/14 8:30am, 18 characters ON (132 hours) 7/15 8:30am 7/23 9:45am, 34 characters ON (193 hours) 8/7-8/20, 13 characters ON (312 hours) 8/21 high load test

40 Tests Signs 8 13 BUCKLE UP DRIVE WITH CARE SIGN TEST IN PROGRESS TEST 01 TEST ABCDEFGHIJKL MNOPQRSTUVWX 18 34

41 Power Data Daily Avg Power State 7/2/08 7/4/08 7/6/08 7/8/08 7/10/08 7/12/08 7/14/08 7/16/08 7/18/08 7/20/08 7/22/08 7/24/08 7/26/08 7/28/08 7/30/08 8/1/08 8/3/08 8/5/08 8/7/08 8/9/08 8/11/08 8/13/08 8/15/08 8/17/08 8/19/08 8/21/ Ah Volt Solar Ah Wind Ah Inverter Ah Battery V

42 Monthly Power Data Monthly Ah and Volts Amp Hours Volts Solar_Ah Wind_Ah Inverter_Ah Battery_V 0 20 Aug- 07 Sep- 07 Oct- 07 Nov- 07 Dec- 07 Jan- 08 Feb- 08 Mar- 08 Apr- 08 May- 08 Jun- 08 Jul-08 Aug- 08

43 Monthly Power Generation/Consumption Data

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49 Conclusion Wind/Solar hybrid renewable power station was successfully constructed and tested Solar/Wind combination increases power reliability Many ITS applications could benefit Independence of distance to cost characteristic Higher capacity wind turbine, PV panels and battery bank are more desirable Higher capacity inverter is more reliable

50 Questions? Dr. Taek Kwon Phone: (218)