Remote Sensingfor Wind Resource Assessment

� Target

� LIDAR Experience Offshore

� LIDAR Experience Onshore

� Practical Experience

2

Agenda

1. To get good and reliable wind measurements.

2. To calculate reliable and accurate power production.

3. To reduce the uncertainty in the power production calculation.

4. To have a fast, flexible and economical measurement solution.

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Targets

� Better measurement equipment/techniques/concepts to get good quality wind data.

� Optimization of the measurement procedure

� Clear understanding of our equipment

� Practical experience is invaluable!

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How do we ensure the quality of our measurements?

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LIDAR experience offshore

Projects Where Goal Status

NorseWind ProjectHorns Rev2 Accommodation Platform, North Sea

Wind atlas for North Sea, Irish Sea and Baltic Sea On going

NorseWind Project Siri Oil- and Gas Platform, North Sea

Wind atlas for North Sea, Irish Sea and Baltic Sea On going

Walney Offshore Windfarm

Substation, Irish sea Weather Observation On going

Anholt Offshore Windfarm Substation, Denmark Weather Observation

To start in a couple of months

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LIDAR in HR2

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HR2 accommodation platform & transformer station

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HR2 accommodation platform & transformer station

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Siri oil & gas platform

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LIDAR experience onshoreProjects Where Goal Status

Midtfjellet Norway

Investigate wind conditions at Midtfjelletwind farm for determining whether or not severe conditions could be encountered in a particular location at the site.

Completed

Karcino PolandInvestigate the correlation of LIDAR and turbine nacelle measurements.Evaluate different wake models.

Completed

Karnice PolandAssess wind turbine performance.Observe wind shear and forest effects.Observe turbine wakes.

On going

Comparison of Zephir-300 and WindCubeV2 Poland

Compare two LIDAR systems and assess their usability for future projects.Compare the technical, practical and logistical aspects of both systems.

On going

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Correlation of LIDAR and nacelle cup anemometer (Karcino)

• The WS slows down on the nacelle measurement until app. 8 m/s• The WS speeds up on the nacelle measurement over 8 m/s

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Observing turbine wakes with two LIDARs in Karnice• Observing of the wake on a row of WT (WD: NW) • Observing of the wake on a single WT (WD: SW)

LIDARs

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Comparison of Zephir-300 & WindCubeV2 (Karnice)

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Comparison of horizontal wind speed measurement at different heights (Karnice)

0 2 4 6 8 10 12 14 16 18 200

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4

6

8

10

12

14

16

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Horizontal Wind Speed (m/s) at 98m

100m

Win

dS

peed

(m/s

)

0 2 4 6 8 10 12 14 16 18 200

2

4

6

8

10

12

14

16

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Horizontal Wind Speed (m/s) at 198m

200m

Win

dS

peed

(m/s

)

ZephiR

WindCube

100m 200m

WindCube

ZephiR

• Good correlation of Horizontal Wind speeds up to app. 100m height• Deviation in the measured Wind Speed over 100m height• Deviation in measured Wind Speed over 16m/s

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Practical issues

• Self-sufficient power source• Easy installation of Lidars in the field• Levelling• Positioning and alignment• Transport • Data monitoring (remotely)• Security

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Self-sufficient power source

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Easy installation

Karcino ( 1 day installation)

Karnice ( 1 Hour installation)

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Installing LIDARs in the field

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Levelling

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Positioning and alignment

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Security against animals

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Security against vandalism & theft

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Thank you!