Survey: Lidars for design and planning of wind farms

The purpose of this survey is to assess the applicability of Lidars for the planning and design of wind farms. Particularly the use of Lidars for wind resources assessment and siting of wind turbines. The survey is conducted by DTU Wind Energy as part of the workshop: “AEPs from Scanning Lidars” (www.recastproject.dk). The survey is anonymous, and results will be posted on the web-page shortly after October 2nd, 2018.

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* 1. What is your main role in connection with Lidars:

I develop Lidars

I analyse Lidar data

I conduct Lidar campaigns

I keep myself updated on Lidar technology

Other (please specify)

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* 2. On a scale of 1-5, what are the main barriers to using Lidars (with 5 being a very large barrier):

	1	2	3	4	5
Accuracy	Accuracy 1	Accuracy 2	Accuracy 3	Accuracy 4	Accuracy 5
Data availability	Data availability 1	Data availability 2	Data availability 3	Data availability 4	Data availability 5
Lack of acceptance	Lack of acceptance 1	Lack of acceptance 2	Lack of acceptance 3	Lack of acceptance 4	Lack of acceptance 5
Lack of standardization	Lack of standardization 1	Lack of standardization 2	Lack of standardization 3	Lack of standardization 4	Lack of standardization 5
Power supply/consumption	Power supply/consumption 1	Power supply/consumption 2	Power supply/consumption 3	Power supply/consumption 4	Power supply/consumption 5
Price	Price 1	Price 2	Price 3	Price 4	Price 5
Reliability	Reliability 1	Reliability 2	Reliability 3	Reliability 4	Reliability 5
Complexity of use (installation/configuration)	Complexity of use (installation/configuration) 1	Complexity of use (installation/configuration) 2	Complexity of use (installation/configuration) 3	Complexity of use (installation/configuration) 4	Complexity of use (installation/configuration) 5

Other (please specify)

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* 3. I find Lidars most usefull for:

Measuring the wind resource (the wind climate)

Measuring site suitability parameters (shear, turbulence, etc.)

Conducting site calibrations (speedup)

Other (please specify)

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* 4. Which Lidar types do you use (or consider to use)?

Profilers (Profiling Lidars, e.g. Windcube, ZephiR300, Mitsubishi compact wind lidar)

Scanning lidar (single lidar – e.g. Wincube 100S, 200S, 400S, Galion, HaloPhotonics, …)

Combined system of several scanning Lidars (e.g. DTU WindScanner system)

Other (please specify)

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* 5. What is the average duration of a typical Lidar campaign (actual measuring time)? (Number of days)

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* 6. What is the average deployment time of a typical Lidar campaign (time used for Lidar configuration)? (Number of days)

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* 7. Where would you use Lidars?

Simple terrain (flat with few rougness changes)

Complex terrain (steep terrain, forests, strong stability effect, etc.)

Offshore

Other (please specify)

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* 8. Do you usually apply any corrections when measuring in complex terrain?

Yes

Not applicable

Other (please specify)

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* 9. How do you use Lidars?

I often do pure Lidar campaign

I mainly use Lidars as complement to a mast(s) measurements

Other (please specify)

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* 10. Do you move the Lidar during the campaign?

Yes

Other (please specify)

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* 11. When using Lidars, do you measure at

Several horizontal positions

Several vertical positions

Only a single position

Other (please specify)