tater hill final wind data reportwind.appstate.edu/sites/default/files/final_report... · windpro...

Potato Hill Annual Wind Data Analysis

Summary Report

Prepared for: State Energy Office

NC Department of Administration 1340 Mail Service Center Raleigh, NC 27699-1340

Contract # 04-SPP-BL3

Prepared by: NC Solar Center

North Carolina State University Campus Box 7401 Raleigh, NC 27695

August 31, 2005

1

Potato Hill Annual Wind Data Summary Report Wind Data Collection Wind speed and direction were monitored at Potato Hill (Tater Hill) near Boone, NC for just over one year from June 4, 2004 to June 21, 2005. A ridge line formed by Tater Hill and Rich Mountain runs NNE for about 2 miles across publicly and privately held land which is mostly undeveloped. This ridge line is appropriate for 20 to 25 megawatts of large scale wind development. The winds were monitored on top of Tater Hill by instrumenting a 55 meter (180 feet) tall University of North Carolina Television tower. The tower is located on a large 195 acre parcel of land privately owned by Curtis Alan Replogle. The tower was instrumented with four anemometers, two wind vanes, a temperature sensor and a data logging computer. The data logging computer measured each of the sensors every two seconds and averaged these measurements every ten minutes, storing the average value on a data card. The data logging computer is shown attached to the right side of the tower in Figure 2. The most desirable data was collected at the 50 m height. Two anemometers and two vanes were installed at 50 m. One of the vanes and one of the anemometers at 50 m was heated to ensure data would be collected even when the tower iced over in the winter as is pictured in Figure 1. The remainder of the wind sensors were unheated and were installed at the 40 m and 30 m levels. The four wind sensor mounting booms can be seen on the left side of the tower in Figure 1. The heated wind vane and anemometer mounted at the 50 m level required electrical power for heating. The tower site had 120/240 VAC utility power available. A meter and voltage transformer, shown on the left side of the tower in Figure 2, were mounted on the tower to supply electricity to the heated sensors. The sensors are heated all year long but draw the most power during the winter. The energy used during the year by the two heated sensors was measured to be 675 kWh. Only one failure occurred with the data collection during the year. The anemometer at the 40 m level was destroyed during the tenth month due to falling ice.

2

Figure 1: UNC Television Tower with Wind Sensors Installed

Figure 2: Data Collection Equipment Mounted at Base of UNC Television Tower

3

Measured Versus Predicted Data The collected wind data was analyzed with WindPRO wind planning and projecting software. The measured annual average wind parameters correspond well with those estimated by the May 2004 North Carolina Wind Resource Map produced by AWS Truewind for the NC State Energy Office. The AWS Truewind wind speed map of Potato Hill can be seen in Figure 3. The annual average wind speed at 50 m was measured to be 9.1 m/s. The annual average wind speed for this location predicted by the AWS Truewind map is 9.59 m/s. The wind frequency distribution Weibull parameters for the year of measured data are A = 10.1 m/s and k = 1.84. The AWS wind map parameters for this location are A = 10.9 m/s and k = 2.14. The wind rose for the year of collected data shows that the wind blew out of the WNW sector more frequently (20% of the time) than from any other of the sixteen direction sectors. The AWS Truewind map wind rose chart shown in figure 4 also predicts winds blowing from the WNW most frequently, showing winds blowing from the WNW sector 29% of the time. The measured annual average wind speed and frequency distribution corresponds to a U.S. DOE NREL wind power class of 7, the highest wind class, with wind power density of over 800 watts/m2 and an average annual wind speed greater than 8.8 m/s. According to NREL’s classification system, this site has a Superb wind resource. The maximum wind gust measured during the year was 47.6 m/s (106.4 mph). This wind occurred on December 1, 2004 at 7:20 am. The maximum sustained 10 minute average wind speed was 34.1 m/s (76.3 mph), also measured at 7:20 am on December 1, 2004. WindPRO Analysis Appendix 1 contains the WindPRO analysis of the collected data from the one year period from June 4, 2004 to June 21, 2005. The table on page 1 of the WindPRO analysis shows the statistics for data recovery for the 50 m heated sensors. The 50 m sensors did not freeze over during the winter. They were used for the data analysis because their readings are correct for the entire year. Other sensors froze during the winter and give false readings for much of the winter. The table shows that 100% of the data from the monitoring period was collected with no data loss. The seven tables and charts on page 2 show wind speed and direction data for the year. The radial chart shows the wind speed versus direction for all 55,008 ten minute intervals during the year. The table shows the mean wind speed by month and the annual mean of 9.1 m/s. An hourly chart shows the diurnal nature of the wind. This diurnal chart shows that on average, the winds are greatest during non daylight hours. A monthly chart shows that the average wind speed is highest in winter and lowest in the summer. The remaining three charts show the wind speed, wind direction and turbulence intensity for each ten minute interval during the year. Pages 3, 4 and 5 are more detailed views of the charts and tables from page 2. Page 6 of the WindPRO report shows the frequency and turbulence tables by wind speed bin and direction. The values in the frequency table are number of ten minute intervals for each wind speed and direction bin. Notice the sum of the occurrences is 55,008, the number of ten minute intervals in the year. Also notice the direction with the highest

4

number of occurrences is WNW. The values of the turbulence table are calculated turbulence intensity. The charts on page 7 are graphical representations of the tabulated data from page 6. The charts on pages 8-10 are frequency distribution charts for each of the 16 directions in the frequency table of page 6. The charts of pages 8 – 10 also show the Weibull curve fit and characteristics for each of the 16 directions. Page 11 is a summary of the Weibull data for the year.

Figure 3: Potato Hill 50 m Wind Speed Map

Tater Hill

5

Figure 4: AWS Truewind Wind Rose Chart for Potato Hill

6

Appendix 1: WindPRO Data Analysis Report

WindPRO version 2.4.0.62 Apr 2004

WindPRO is developed by EMD International A/S, Niels Jernesvej 10, DK-9220 Aalborg Ø, Tlf. +45 96 35 44 44, Fax +45 96 35 44 46, e-mail: [email protected]

Project:

Tater HillDescription:

Data from file(s)C:\NomadDesktop\Export June 4, 2004-June 21,2005.csv

Printed/Page

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NC State University, c/o NC Solar CenterCampus Box 7401, US-RALEIGH, NC 27695-7204+1 919 515 3480

Calculated:

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Meteo data report, height: 50.0 mName of meteo object: Instrumented UNC TV tower

Data from: 06/04/2004 12:10 PM Data to: 06/21/2005 12:00 PM Observations: 55008 Observations per day: 144 Recovery rate: 100%

day 06/04 07/04 08/04 09/04 10/04 11/04 12/04 01/05 02/05 03/05 04/05 05/05 06/05 07/051 144 144 144 144 144 144 144 144 144 144 144 1442 144 144 144 144 144 144 144 144 144 (138) 144 1443 144 144 144 144 144 144 144 144 144 144 144 1444 (71) 144 144 144 144 144 144 144 144 144 144 144 1445 144 144 144 144 144 144 144 144 144 144 144 144 1446 144 144 144 144 144 144 144 144 144 144 144 144 1447 144 144 144 144 144 144 144 144 144 144 144 144 1448 144 144 144 144 144 144 144 144 144 144 144 144 1449 144 144 144 144 144 144 144 144 144 144 144 144 144

10 144 144 144 144 144 144 144 144 144 144 144 144 14411 144 144 144 144 144 144 144 144 144 144 144 144 14412 144 144 144 144 144 144 144 144 144 144 144 144 14413 144 144 144 144 144 144 144 144 144 144 144 144 14414 144 144 144 144 144 144 144 144 144 144 144 144 14415 144 144 144 144 144 144 144 144 144 144 144 144 14416 144 144 144 144 144 144 144 144 144 144 144 144 14417 144 144 144 144 144 144 144 144 144 144 144 144 14418 144 144 144 144 144 144 144 144 144 144 144 144 14419 144 144 144 144 144 144 144 144 144 144 144 144 14420 144 144 144 144 144 144 144 144 144 144 144 144 14421 144 144 144 144 144 144 144 144 144 144 144 144 (73)22 144 144 144 144 144 144 144 144 144 144 144 14423 144 144 144 144 144 144 144 144 144 144 144 14424 144 144 144 144 144 144 144 144 144 144 144 14425 144 144 144 144 144 144 144 144 144 144 144 14426 144 144 144 144 144 144 144 144 144 144 144 14427 144 144 144 144 144 144 144 144 144 144 144 14428 144 144 144 144 144 144 144 144 144 144 144 14429 144 144 144 144 144 144 144 144 144 144 14430 144 144 144 144 (150) 144 144 144 144 144 14431 144 144 144 144 144 144 144% 100 100 100 100 (100) 100 100 100 100 100 (100) 100 (68) (0)



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Monthly mean values of wind speed in m/sMonth 2004 2005 mean mean of monthsJan 10.8 10.8 10.8Feb 11.2 11.2 11.2Mar 11.9 11.9 11.9Apr 10.1 10.1 10.1May 8.3 8.3 8.3Jun 6.7 8.7 7.5 7.7Jul 7.3 7.3 7.3Aug 5.8 5.8 5.8Sep 9.3 9.3 9.3Oct 8.3 8.3 8.3Nov 8.5 8.5 8.5Dec 10.7 10.7 10.7mean, all data 8.1 10.2 9.1mean of months 8.1 10.2 9.2

Wind speed [m/s]

NNNW

WNW

W

WSW

SSW

S

SSE

ESE

E

ENENN

E

30

25

20

15

10

5

0

30

25

20

15

10

5

030 20 10 0

3020100

Wind speed. Height: 50.0 m Wind direction. Height: 50.0 m

Hour2423222120191817161514131211109876543210

[m/s

]

8

6

4

2

0

Degrees

350300250200150100500


Month121110987654321

[m/s

]

1086420

Degrees

350300250200150100500

Wind speed

06/01/200505/01/200504/01/200503/01/200502/01/200501/01/200512/01/200411/01/200410/01/200409/01/200408/01/200407/01/2004

[m/s

]

302520151050

Wind direction

06/01/200505/01/200504/01/200503/01/200502/01/200501/01/200512/01/200411/01/200410/01/200409/01/200408/01/200407/01/2004

[Deg

rees

]

350300250200150100500

Turbulence intensityV>4.0 m/s

06/01/200505/01/200504/01/200503/01/200502/01/200501/01/200512/01/200411/01/200410/01/200409/01/200408/01/200407/01/2004

[]

0.8

0.6

0.4

0.2

0



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Monthly mean values of wind speed in m/sMonth 2004 2005 mean mean of monthsJan 10.8 10.8 10.8Feb 11.2 11.2 11.2Mar 11.9 11.9 11.9Apr 10.1 10.1 10.1May 8.3 8.3 8.3Jun 6.7 8.7 7.5 7.7Jul 7.3 7.3 7.3Aug 5.8 5.8 5.8Sep 9.3 9.3 9.3Oct 8.3 8.3 8.3Nov 8.5 8.5 8.5Dec 10.7 10.7 10.7mean, all data 8.1 10.2 9.1mean of months 8.1 10.2 9.2

Wind speed [m/s]

NNNW

WNW

W

WSW

SSW

S

SSE

ESE

E

ENE

NNE30

25

20

15

10

5

0

30

25

20

15

10

5

030 20 10 0

3020100


Hour2423222120191817161514131211109876543210

[m/s

]

9

8

7

6

5

4

3

2

1

0

Degrees

360340320300280260240220200180160140120100806040200


Month121110987654321

[m/s

]

11

10

9

8

7

6

5

4

3

2

1

0

Degrees

360340320300280260240220200180160140120100806040200



Project:



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Calculated:

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Wind speed

06/01/200505/01/200504/01/200503/01/200502/01/200501/01/200512/01/200411/01/200410/01/200409/01/200408/01/200407/01/2004

[m/s

]

3432302826242220181614121086420

Wind direction

06/01/200505/01/200504/01/200503/01/200502/01/200501/01/200512/01/200411/01/200410/01/200409/01/200408/01/200407/01/2004

[Deg

rees

]

360340320300280260240220200180160140120100806040200


06/01/200505/01/200504/01/200503/01/200502/01/200501/01/200512/01/200411/01/200410/01/200409/01/200408/01/200407/01/2004

[]

0.80.750.7

0.650.6

0.550.5

0.450.4

0.350.3

0.250.2

0.150.1

0.050



Project:



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Calculated:

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Wind speed

06/21/200506/19/200506/17/200506/15/200506/13/200506/11/200506/09/200506/07/200506/05/2005

[m/s

]

3432302826242220181614121086420

Wind direction

06/21/200506/19/200506/17/200506/15/200506/13/200506/11/200506/09/200506/07/200506/05/2005

[Deg

rees

]

360340320300280260240220200180160140120100806040200


06/21/200506/19/200506/17/200506/15/200506/13/200506/11/200506/09/200506/07/200506/05/2005

[]

0.80.750.7

0.650.6

0.550.5

0.450.4

0.350.3

0.250.2

0.150.1

0.050



Project:



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Calculated:

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FrequencyWind speed Sum N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW

0.00 - 0.49 963 260 5 25 19 57 81 67 9 8 65 53 45 64 78 85 420.50 - 1.49 613 26 5 17 19 21 85 63 30 16 30 62 45 64 50 47 331.50 - 2.49 1,243 34 15 38 34 65 145 91 66 46 44 118 81 170 128 120 482.50 - 3.49 2,711 68 42 66 68 138 316 197 114 140 116 222 163 380 309 256 1163.50 - 4.49 3,879 71 82 64 100 207 430 240 204 211 178 281 234 544 532 378 1234.50 - 5.49 4,653 42 34 64 107 308 687 269 304 257 215 254 240 592 700 422 1585.50 - 6.49 4,867 46 19 45 85 276 794 278 353 209 177 219 273 605 822 486 1806.50 - 7.49 4,839 41 10 18 59 249 642 314 315 176 179 203 216 693 1,026 547 1517.50 - 8.49 4,662 49 20 13 39 246 575 361 229 152 156 225 157 653 1,118 540 1298.50 - 9.49 4,394 21 29 19 23 298 497 240 189 154 117 181 144 642 1,259 479 102

9.50 - 10.49 3,901 7 13 11 27 313 433 141 127 97 81 125 106 621 1,306 404 8910.50 - 11.49 3,306 5 13 6 12 250 441 120 101 71 77 79 78 563 1,129 299 6211.50 - 12.49 2,736 8 7 4 5 222 343 89 78 55 58 53 34 392 1,104 258 2612.50 - 13.49 2,407 3 3 6 1 181 231 59 66 53 49 60 43 373 1,052 209 1813.50 - 14.49 2,092 3 6 5 1 139 178 53 49 30 15 33 32 280 1,014 223 3114.50 - 15.49 1,647 8 7 2 1 100 162 40 26 26 10 18 20 244 844 132 715.50 - 16.49 1,253 10 2 2 0 44 119 17 16 15 10 15 16 194 670 119 416.50 - 17.49 1,034 7 6 1 0 41 91 24 13 10 5 5 9 172 540 107 317.50 - 18.49 841 4 0 1 0 16 52 23 3 8 8 6 14 142 456 104 418.50 - 19.49 793 2 2 4 1 27 52 13 1 1 3 2 10 149 440 79 719.50 - 20.49 598 1 1 0 1 26 27 4 0 0 1 2 11 103 361 56 420.50 - 21.49 499 0 1 1 0 32 30 14 3 0 0 2 5 83 290 33 521.50 - 22.49 350 1 0 0 0 12 18 9 2 0 0 0 0 54 217 36 122.50 - 23.49 262 3 0 0 0 5 13 7 0 1 0 1 0 38 164 25 523.50 - 24.49 155 2 0 0 0 2 12 5 2 0 0 0 1 18 98 14 124.50 - 25.49 132 2 0 0 0 2 8 5 0 0 0 0 0 17 89 9 025.50 - 26.49 67 0 0 0 1 1 6 0 0 0 0 1 1 9 42 6 026.50 - 27.49 45 0 0 0 0 0 5 3 0 0 0 0 0 6 28 3 027.50 - 28.49 26 0 0 0 0 0 1 0 0 0 0 1 2 6 16 0 028.50 - 29.49 14 0 0 0 0 0 0 0 0 0 0 0 0 2 11 1 029.50 - 30.49 16 0 0 0 0 0 0 0 0 0 0 1 0 4 11 0 030.50 - 31.49 6 0 0 0 0 0 0 0 0 0 0 0 0 1 3 2 031.50 - 32.49 2 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 032.50 - 33.49 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 033.50 - 34.49 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0

Sum 55,008 724 322 412 603 3,278 6,474 2,746 2,300 1,736 1,594 2,222 1,981 7,880 15,908 5,479 1,349

TurbulenceWind speed Sum N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW

0.00 - 0.49 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0000.50 - 1.49 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0001.50 - 2.49 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0002.50 - 3.49 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0003.50 - 4.49 0.127 0.155 0.136 0.160 0.151 0.133 0.124 0.127 0.148 0.143 0.136 0.106 0.113 0.134 0.117 0.111 0.1414.50 - 5.49 0.111 0.151 0.181 0.142 0.148 0.107 0.099 0.116 0.136 0.135 0.143 0.092 0.098 0.106 0.097 0.108 0.1005.50 - 6.49 0.102 0.145 0.160 0.164 0.151 0.087 0.087 0.116 0.135 0.141 0.132 0.099 0.094 0.098 0.091 0.092 0.0926.50 - 7.49 0.097 0.127 0.171 0.180 0.141 0.085 0.079 0.108 0.136 0.160 0.136 0.095 0.083 0.092 0.088 0.079 0.0897.50 - 8.49 0.093 0.126 0.142 0.108 0.131 0.082 0.075 0.107 0.144 0.172 0.138 0.090 0.075 0.092 0.083 0.080 0.0768.50 - 9.49 0.091 0.149 0.099 0.127 0.139 0.074 0.073 0.103 0.141 0.189 0.148 0.085 0.071 0.092 0.080 0.078 0.077

9.50 - 10.49 0.088 0.136 0.087 0.099 0.105 0.063 0.067 0.104 0.159 0.199 0.165 0.097 0.085 0.090 0.080 0.079 0.07610.50 - 11.49 0.087 0.108 0.077 0.102 0.099 0.056 0.063 0.111 0.166 0.205 0.165 0.113 0.086 0.090 0.083 0.073 0.06511.50 - 12.49 0.088 0.097 0.074 0.131 0.150 0.058 0.063 0.112 0.172 0.209 0.153 0.100 0.091 0.092 0.085 0.075 0.05812.50 - 13.49 0.091 0.059 0.123 0.098 0.169 0.065 0.070 0.135 0.169 0.199 0.151 0.106 0.099 0.092 0.086 0.080 0.05413.50 - 14.49 0.091 0.066 0.101 0.108 0.123 0.073 0.078 0.129 0.161 0.190 0.140 0.102 0.086 0.091 0.089 0.083 0.03814.50 - 15.49 0.093 0.104 0.102 0.126 0.098 0.065 0.075 0.135 0.168 0.192 0.152 0.110 0.092 0.094 0.092 0.096 0.07215.50 - 16.49 0.093 0.120 0.081 0.132 0.064 0.071 0.121 0.161 0.191 0.116 0.108 0.100 0.096 0.092 0.095 0.09816.50 - 17.49 0.097 0.102 0.092 0.137 0.071 0.076 0.130 0.144 0.184 0.119 0.106 0.122 0.094 0.097 0.099 0.10817.50 - 18.49 0.100 0.093 0.134 0.095 0.080 0.138 0.136 0.182 0.134 0.112 0.110 0.095 0.098 0.101 0.11018.50 - 19.49 0.098 0.129 0.096 0.072 0.038 0.070 0.079 0.162 0.184 0.218 0.120 0.123 0.098 0.094 0.101 0.100 0.09919.50 - 20.49 0.099 0.129 0.070 0.034 0.075 0.078 0.128 0.063 0.112 0.099 0.094 0.104 0.096 0.08820.50 - 21.49 0.102 0.081 0.049 0.076 0.087 0.159 0.166 0.119 0.096 0.102 0.105 0.094 0.10521.50 - 22.49 0.105 0.105 0.100 0.094 0.154 0.180 0.103 0.107 0.086 0.08422.50 - 23.49 0.108 0.096 0.118 0.107 0.156 0.210 0.139 0.107 0.108 0.090 0.13223.50 - 24.49 0.110 0.117 0.118 0.119 0.164 0.162 0.098 0.101 0.108 0.101 0.10024.50 - 25.49 0.111 0.097 0.115 0.135 0.161 0.107 0.106 0.12425.50 - 26.49 0.107 0.099 0.123 0.124 0.123 0.112 0.099 0.102 0.12326.50 - 27.49 0.115 0.156 0.143 0.104 0.107 0.12227.50 - 28.49 0.109 0.109 0.144 0.151 0.116 0.09928.50 - 29.49 0.105 0.111 0.100 0.15329.50 - 30.49 0.107 0.129 0.102 0.10730.50 - 31.49 0.120 0.117 0.105 0.14231.50 - 32.49 0.105 0.115 0.09432.50 - 33.49 0.107 0.10733.50 - 34.49 0.120 0.120

Sum 0.097 0.133 0.129 0.141 0.141 0.078 0.080 0.114 0.145 0.166 0.143 0.097 0.090 0.096 0.090 0.087 0.086



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Frequency

Series 0Weibull A: 10.1 m/s k: 1.84 Vm: 9.0 m/s

Wind speed35302520151050

[%]

8

7

6

5

4

3

2

1

0

Frequency

N

NW

W

SW

S

SE

E

NE

28 %26 %24 %22 %20 %18 %16 %14 %12 %10 %8 %6 %4 %2 %

25 %20 %15 %10 %5 %

Turbulence V>4.0 m/s

Series 0

Wind speed302520151050

0.12

0.11

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0

Turbulence V>4.0 m/s

N

NW

W

SW

S

SE

E

NE

0.160

0.140

0.120

0.100

0.080

0.060

0.040

0.020

0.1600.1400.1200.1000.0800.0600.0400.020



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Frequency

N Weibull A: 4.9 m/s k: 1.09 Vm: 4.7 m/s

Wind speed35302520151050

[%]

7065605550454035302520151050

Frequency

NNE Weibull A: 6.7 m/s k: 1.44 Vm: 6.1 m/s

Wind speed35302520151050

[%]

2422201816141210

86420

Frequency

NE Weibull A: 5.6 m/s k: 1.38 Vm: 5.1 m/s

Wind speed35302520151050

[%]

16

14

12

10

8

6

4

2

0

Frequency

ENE Weibull A: 6.1 m/s k: 1.90 Vm: 5.4 m/s

Wind speed35302520151050

[%]

16

14

12

10

8

6

4

2

0

Frequency

EWeibull A: 10.3 m/s k: 2.31 Vm: 9.1 m/s

Wind speed35302520151050

[%]

9

8

7

6

5

4

3

2

1

0

Frequency

ESE Weibull A: 9.2 m/s k: 1.87 Vm: 8.2 m/s

Wind speed35302520151050

[%]

1211

109

8

76

5

43

21

0



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Frequency

SE Weibull A: 8.5 m/s k: 1.87 Vm: 7.5 m/s

Wind speed35302520151050

[%]

131211109876543210

Frequency

SSE Weibull A: 7.9 m/s k: 2.01 Vm: 7.0 m/s

Wind speed35302520151050

[%]

1514131211109876543210

Frequency

S Weibull A: 7.7 m/s k: 1.96 Vm: 6.9 m/s

Wind speed35302520151050

[%]

14131211109876543210

Frequency

SSW Weibull A: 7.6 m/s k: 2.04 Vm: 6.7 m/s

Wind speed35302520151050

[%]

131211109876543210

Frequency

SW Weibull A: 7.4 m/s k: 1.91 Vm: 6.6 m/s

Wind speed35302520151050

[%]

12111098

76543

210

Frequency

WSW Weibull A: 7.5 m/s k: 1.67 Vm: 6.7 m/s

Wind speed35302520151050

[%]

131211109876543210



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Frequency

WWeibull A: 10.6 m/s k: 1.91 Vm: 9.4 m/s

Wind speed35302520151050

[%]

8

7

6

5

4

3

2

1

0

Frequency

WNWWeibull A: 13.0 m/s k: 2.29 Vm: 11.5 m/s

Wind speed35302520151050

[%]

8

7

6

5

4

3

2

1

0

Frequency

NW Weibull A: 9.9 m/s k: 1.81 Vm: 8.8 m/s

Wind speed35302520151050

[%]

10

9

8

7

6

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4

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2

1

0

Frequency

NNW Weibull A: 7.7 m/s k: 1.85 Vm: 6.8 m/s

Wind speed35302520151050

[%]

131211109876543210



Project:



Printed/Page

08/31/2005 11:37 AM / 11Licensed user:


Calculated:

08/31/2005 11:37 AM/


Weibull Datak-parameter correction: 0.0080/mSector A- parameter Mean wind speed k- parameter Frequency Frequency Wind shear

[m/s] [m/s] [%]0-N 4.88 4.72 1.091 1.32 1.3 0.001-NNE 6.67 6.06 1.437 0.59 0.6 0.002-NE 5.55 5.07 1.384 0.75 0.7 0.003-ENE 6.07 5.38 1.899 1.10 1.1 0.004-E 10.25 9.08 2.308 5.96 6.0 0.005-ESE 9.22 8.19 1.869 11.77 11.8 0.006-SE 8.48 7.53 1.868 4.99 5.0 0.007-SSE 7.88 6.99 2.014 4.18 4.2 0.008-S 7.74 6.87 1.961 3.16 3.2 0.009-SSW 7.60 6.74 2.038 2.90 2.9 0.0010-SW 7.42 6.58 1.906 4.04 4.0 0.0011-WSW 7.48 6.69 1.669 3.60 3.6 0.0012-W 10.58 9.38 1.909 14.33 14.3 0.0013-WNW 12.98 11.50 2.291 28.92 28.9 0.0014-NW 9.91 8.81 1.813 9.96 10.0 0.0015-NNW 7.69 6.83 1.846 2.45 2.5 0.00mean 10.13 9.00 1.839 100.00 100.0 0.00

Frequency

Total A: 10.1 m/s k: 1.84 Vm: 9.0 m/s N A: 4.9 m/s k: 1.09 Vm: 4.7 m/s NNE A: 6.7 m/s k: 1.44 Vm: 6.1 m/s NE A: 5.6 m/s k: 1.38 Vm: 5.1 m/sENE A: 6.1 m/s k: 1.90 Vm: 5.4 m/s E A: 10.3 m/s k: 2.31 Vm: 9.1 m/s ESE A: 9.2 m/s k: 1.87 Vm: 8.2 m/s SE A: 8.5 m/s k: 1.87 Vm: 7.5 m/sSSE A: 7.9 m/s k: 2.01 Vm: 7.0 m/s S A: 7.7 m/s k: 1.96 Vm: 6.9 m/s SSW A: 7.6 m/s k: 2.04 Vm: 6.7 m/s SW A: 7.4 m/s k: 1.91 Vm: 6.6 m/sWSW A: 7.5 m/s k: 1.67 Vm: 6.7 m/s W A: 10.6 m/s k: 1.91 Vm: 9.4 m/s WNW A: 13.0 m/s k: 2.29 Vm: 11.5 m/s NW A: 9.9 m/s k: 1.81 Vm: 8.8 m/sNNW A: 7.7 m/s k: 1.85 Vm: 6.8 m/s

Wind speed282726252423222120191817161514131211109876543210

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