WindPRO version Nov 2012 Project:

Transcription

1 23/11/ :21 / 1 WAsP interface - Main Result Calculation: WAsP Interface example Name for WAsP Site coordinates UTM NAD27 Zone: 14 East: 451,101 North: 5,110,347 Air density calculation mode Result for WTG at hub altitude Air density relative to standard Hub altitude above sea level (asl) Annual mean temperature at hub alt. Pressure at WTGs Individual per WTG kg/m³ 95.1 % m 3.5 C hpa The calculation is based on conversion of a wind statistic (wind climate for the region) through a terrain modeling (roughness, elevation and local obstacles) to wind distribution on the turbine position based on the WINDATLAS method (Risø/DTU), where the software package WAsP (Risø/DTU) is used for performing the calculations. The calculated wind distribution is converted to expected annual energy production (AEP) through the power curve and air density correction. WAsP version WAsP 1 RVEA0164.dll Wind statistics US wishek met mast 7-01 to m.wws Scale 1:25,000 Site Data Calculation Results Key results for height 8 m above ground level Wind energy: 5,168 kwh/m²; Mean wind speed: 8.9 m/s; Equivalent roughness: 1.8 Calculated Annual Energy WTG type Power curve Valid Manufact. Type-generator Power, Rotor Hub Creator Name rated diameter height Yes VESTAS V100-1,800 [kw] 1,800 [m] 10 [m] 8 EMD Annual Energy Result Result-1% Mean Capacity wind factor speed Level 0 - Estimated - Mode , ,

2 23/11/ :21 / 2 WAsP interface - Production Analysis Calculation: WAsP Interface examplewtg: VESTAS V !O!, Hub height: 8 m, Air density: kg/m³ Directional Analysis Sector Roughness based energy +Increase due to hills Resulting energy Specific energy Specific energy Increase due to hills Directional Distribution Utilization Operational Full Load Equivalent A- parameter Mean wind speed k- parameter Frequency Power density [kwh/m²] [kwh/kw] [Hours/year] [Hours/year] [W/m²] 0N 1 NNE 2 ENE 3 E 4 ESE 5 SSE 6S 7 SSW 8 WSW 9 W 10 WNW 11 NNW Total 1, , , , , , , , , , ,296 5, , , ,070 8, ,

3 23/11/ :21 / 3 WAsP interface - Power Curve Analysis Calculation: WAsP Interface examplewtg: VESTAS V !O! Level 0 - Estimated - Mode , Hub height: 8 m Name: Source: Level 0 - Estimated - Mode Manufacturer Source/Date Created by Created Edited Stop wind speed Power control CT curve type Generator type Specific power kw/m² 29/04/2011 EMD 02/07/ /11/ Pitch User defined Variable 3 Estimated power curve based on item n V12. HP curve comparison - Note: For standard air density and weibull k parameter = 2 Vmean HP value Pitch, variable speed (2012) VESTAS V !O! Level 0 - Estimated - Mode Check value ,756 5,477 7,045 8,379 9,468 10,313 3,728 5,465 7,025 8,283 9,190 9, The table shows comparison between annual energy production calculated on basis of simplified "HP-curves" which assume that all WTGs performs quite similar - only specific power loading (kw/m^2) and single/dual speed or stall/pitch decides the calculated values. Productions are without wake losses. For further details, ask at the Danish Energy Agency for project report J.nr / or see WindPRO manual chapter The method is refined in EMD report "20 Detailed Case Studies comparing Project Design Calculations and actual Energy Productions for Wind Energy Projects worldwide", jan Use the table to evaluate if the given power curve is reasonable - if the check value are lower than -5%, the power curve probably is too optimistic due to uncertainty in power curve measurement. Power, Efficiency and energy vs. wind speed Power curve Original data from Windcat, Air density: kg/m³ Wind speed Power [kw] ,10 1, ,51 1, , , ,79 1,799.0 Ce Wind speed Ct curve Data used in calculation, Air density: kg/m³ New WindPRO method (adjusted IEC method, improved to match turbine control) <RECOMMENDED> Wind speed Power [kw] , , , , ,799.3 Ce Interval Energy Acc.Energy Relative , , , , , , , , , , , , , , , , , , ,

4 23/11/ :21 / 4 WAsP interface - Terrain Calculation: WAsP Interface examplesite Data: A - for WAsP Obstacles: 0 Obstacles used Roughness: Calculation uses following MAP files: C:\Users\nathan\Documents\WindPRO Data\Projects\ project\roughnessline training_project_0.wpo Min X: 419,194, Max X: 479,542, Min Y: 5,080,472, Max Y: 5,141,088, Width: 60,348 m, Height: 60,616 m Limited by a square on 4 km x 4 km around the current site Orography: Calculation uses following MAP files: C:\Users\nathan\Documents\WindPRO Data\Projects\ project\dem\demo SHP FILE HCL\10 ft HCL from GM.wpo Min X: 443,759, Max X: 457,286, Min Y: 5,103,359, Max Y: 5,116,945, Width: 13,527 m, Height: 13,586 m Limited by a square on 1 km x 1 km around the current site

5 23/11/ :21 / 5 WAsP interface - Wind Data Analysis Calculation: WAsP Interface examplewind data: A - for WAsP; Hub height: 8 Site coordinates UTM NAD27 Zone: 14 East: 451,101 North: 5,110,347 VESTAS V !O! Wind statistics US wishek met mast 7-01 to m.wws Weibull Data Current site Reference: Roughness class 1 AWind kfrequency AkFrequency parameter speed parameter parameter parameter 0N NNE ENE E ESE SSE S SSW WSW W WNW NNW All Sector

6 23/11/ :21 / 6 WAsP interface - Wind Data Analysis Calculation: WAsP Interface examplewind data: A - for WAsP; Hub height: 5.0 Site coordinates UTM NAD27 Zone: 14 East: 451,101 North: 5,110,347 Wind statistics US wishek met mast 7-01 to m.wws Weibull Data Current site Reference: Roughness class 1 AWind kfrequency AkFrequency parameter speed parameter parameter parameter 0N NNE ENE E ESE SSE S SSW WSW W WNW NNW All Sector

7 23/11/ :21 / 7 WAsP interface - Wind Data Analysis Calculation: WAsP Interface examplewind data: A - for WAsP; Hub height: 1 Site coordinates UTM NAD27 Zone: 14 East: 451,101 North: 5,110,347 Wind statistics US wishek met mast 7-01 to m.wws Weibull Data Current site Reference: Roughness class 1 AWind kfrequency AkFrequency parameter speed parameter parameter parameter 0N NNE ENE E ESE SSE S SSW WSW W WNW NNW All Sector

8 23/11/ :21 / 8 WAsP interface - Wind profile detailed Calculation: WAsP Interface examplewtg: VESTAS V !O! Level 0 - Estimated - Mode , Hub height: 8 m Site Data Site coordinates Air density calculation mode Result for WTG at hub altitude Air density relative to standard Hub altitude above sea level (asl) Annual mean temperature at hub alt. Pressure at WTGs for WAsP UTM NAD27 Zone: 14 East: 451,101 North: 5,110,347 Individual per WTG kg/m³ 95.1 % m 3.5 C hpa Wind statisticsus wishek met mast 7-01 to m.wws All sectors Height Mean wind AkWind energy speed parameter parameter [kwh/m²] , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,090 Yield 3,039 4,664 5,668 6,377 6,911 7,412 7,829 8,183 8,489 8,757 9,062 9,333 9,577 9,797 9,998 10,181 10,348 10,504 10,646 10,779 10,924 11,054 11,171 11,279 11,378 11,467 11,549 11,624 11,693 11,755 11,810 11,863 11,910 11,953 11,993 12,029 12,062 12,092 12,117 12,140 Yield Orography change -7, , , , , , , , , , , ,098 1,197 1,286 1,369 1,443 1,512 1,574 1,629 1,682 1,729 1,772 1,812 1,848 1,881 1,911 1,936 1,

9 23/11/ :21 / 9 WAsP interface - Wind profile detailed Calculation: WAsP Interface examplewtg: VESTAS V !O! Level 0 - Estimated - Mode , Hub height: 8 m

10 23/11/ :21 / 10 WAsP interface - Wind profile detailed Calculation: WAsP Interface examplewtg: VESTAS V !O! Level 0 - Estimated - Mode , Hub height: 8 m

11 23/11/ :21 / 11 WAsP interface - Wind statistics info Calculation: WAsP Interface examplewtg: VESTAS V !O! Level 0 - Estimated - Mode , Hub height: 8 m Main data for wind statistic File Name Country Source Mast coordinates Created Edited Sectors WAsP version C:\Users\nathan\Documents\WindPRO Data\Projects\ project\us wishek met mast 7-01 to m.wws wishek met mast 7/01 to 6/02-40 m United States USER UTM NAD27 Zone: 14 East: 450,366 North: 5,110,717 20/06/ /06/ WAsP 6-9 RVEA0011.dll 1, 0, 0, 13 Additional info for wind statistic Source data Data from Data to Measurement length Recovery rate Efficient measurement length wishek met mast 7/01 to 6/02 01/07/ /06/ Months 10 % 12.0 Months Note Note that to get most correct result, the wind statistic should be generated with same WAsP version as used in calculations. For WAsP versions before WAsP 10 although there will be no differences.

12 23/11/ :21 / 12 WAsP interface - Map Calculation: WAsP Interface examplewtg: VESTAS V !O! Level 0 - Estimated - Mode , Hub height: 8 m m Map: 100k topo, Print scale 1:25,000, Map center UTM NAD27 Zone: 14 East: 451,101 North: 5,110,347 Site Data