Get in touch
ZX Lidars
Want to know more?

Get in touch to find out more about our Lidars or services.


+44 (0) 1531 651 000
ZX Lidars Willow End Blackmore Park Rd Malvern WR13 6BD
Back to top
 
14/12/16 -

Industry-reviewed procedure for measuring wind turbine power curves with CW lidar released

Turbine rotor shear and veer uncertainties reduced with ZephIR DM

This, the most widely reviewed industry procedure released to date, describes in a practical manner the main steps to using a nacelle-mounted wind lidar to measure a wind turbine power curve, closely following guidelines such as IEC 61400-12-1 CD. The reviewers include experts from Siemens, DONG Energy, DTU Wind Energy, RES (Renewable Energy Systems) and Natural Power.

The main aim of the peer-review process is to provide a uniform methodology within the wind industry for the measurement, analysis, and reporting of power performance characteristics for individual electricity-producing wind turbines utilising a forward-looking nacelle-mounted, circular-scan continuous-wave (CW) lidar device to measure the horizontal wind speed.

ZephIR DM installed on blade erosion measurement campaign

ZephIR DM installed on blade erosion measurement campaign

Following ZephIR Lidar’s extensive experience in customer-driven power curve measurements, the turbine lidar team worked closely with the reviewers to produce a clear measurement methodology, including guidance on preparation for the campaign, data analysis strategies and quantification of uncertainty. Practicalities including reporting format for the power curve measurement were also discussed.

A key capability described in the reviewed procedure is the ability of a circular-scanning CW lidar, such as ZephIR DM, to measure the wind speed at multiple points across the turbine rotor. IEC guidelines ascribe an uncertainty contribution in the wind speed due to shear effects of 2-4% when only hub-height measurements are available – i.e. from a met mast or a basic lidar system. In contrast, the uncertainty contribution in the wind speed due to shear effects is shown to be only 0.2% in the case presented within the procedure, a ten-fold overall reduction in this contribution to the uncertainty.

ZephIR DM remotely measures wind speed from its installation on turbines out to ranges of 300 metres in order to inform wind studies or to characterise a wind turbine’s true potential by reducing yaw misalignment and accurately measuring power curves in free wind flow. Measurements are taken across the full rotor swept diameter, rather than just at or up to hub height as provided by typical met masts and more basic turbine mounted remote sensors.

The reviewers and expert lidar users include:

Any wind farm owners / operators wishing to conduct Lidar power curve measurements should contact alex.woodward@zephirlidar.com for a detailed Method Statement.

END.

Find The Right Lidar for you

We can help you find the right Lidar for your needs by answering a few questions

Find The Right Lidar for you

What do you need wind data for?

Image Caption 1

Site Assessment

Image Caption 2

Operational Measurements

Image Caption 3

Other

Find The Right Lidar for you

Where do you need to gather data?

Offshore

Onshore

Both onshore and offshore

Find The Right Lidar for you

How long do you need this data for?

<1

PERFECT FOR:

Small scale projects

Temporary events

Less than 1 year

1-2

PERFECT FOR:

Small scale projects

Temporary events

1-2 years

3+

PERFECT FOR:

Long term projects

Operational measurements

3 years +

5

Our Recommendation
ZX Lidars - ZX Measurement Services

Learn more
Our Recommendation
ZX Lidars - ZXTM

Validate your wind turbine performance and reach financial close with nacelle based Lidar Power Performance Testing. Optimise asset performance with operational power curve and yaw measurements. Develop wind farm Lidar control strategies with wake steering and load control.

Power Performance Measurements and Testing to IEC standards including IEC 61400-50-3:2022

Accepted by all major turbine OEMs

Unique measurements of wakes and complex flow

True wind shear and wind veer measurements across the whole rotor

Learn more
Our Recommendation
ZX Lidars - ZX300M

Reduce your offshore wind farm project and financial uncertainty by measuring wind characteristics higher than a met mast and by mobilising measurements across a whole site with wind Lidar. Integrated in to all major Floating Buoy platforms.

Wind resource assessment and measurements offshore

Responsible for 95%+ of all new offshore wind measurements globally

£150bn of finance invested in clean energy from ZX 300M data

10-300m range - the widest range available of any Lidar

Learn more
Our Recommendation
ZX Lidars - ZX300

Reduce your onshore wind project and financial uncertainty by measuring wind characteristics higher than a met mast and by mobilising measurements across a whole site with wind Lidar. Be flexible within your planning applications by using a low visual impact, low height device.

Wind resource assessment and measurements onshore

Bankable standalone wind data in simple and complex terrain

Extreme environments, proven operation for 10 years

10-300m range - the widest range available of any Lidar

Learn more

Thank you for your interest in our products.

It looks like we need more information to be able to help you.

If you click on the button below and leave your information, one of our support team will get in touch to help you find the right product.

This site uses cookies.
ConfigureHide Options
 
Read our privacy policy