FEATURE SPONSOR
WIND MONITORING
The Floating LiDAR is available as a six- metre steel NOMAD buoy hull, coupled with a single or dual LiDAR configuration capable of measuring wind from just metres above deck and up to 200m and above. The AXYS Floating LiDAR system is further designed to accommodate a variety of metocean sensors and
telemetries that provide weather and sea state data to greatly enhance data from forecasting models.
COST REDUCTION COMMITMENT AXYS
AXYS is committed to the industry objective of reducing the cost of offshore
COMPREHENSIVE WIND TURBINE PERFORMANCE ANALYSIS
According to several studies conducted by recognised industry players a large number of wind turbines do not deliver the expected performance due to suboptimal control settings
The common opinion that too optimistic wind resource assessments are the only reason for unexpectedly low energy yields must be critically challenged. In reality, there is actually a variety of possible reasons for wind turbine underperformance.
IDENTIFICATION
For the identification of causes for underperforming wind turbines Danish design and engineering consultancy Ramboll offers a comprehensive performance analysis supported by nacelle-based Lidar wind measurements. Last year the company acquired BBB Umwelttechnik GmbH and CUBE Engineering GmbH, two German wind and engineering consultancies, each with more than 25 years of wind industry experience.
RELIABLE VALIDATIONS
Short-term wind measurements performed by nacelle-mounted ZephIR DM Lidar devices enable Ramboll to offer reliable validations of onshore and offshore wind turbine power curves. As the Lidar unit is fixed to the nacelle, it samples the undisturbed wind flow in advance of its arrival at the turbine rotor plane, regardless of the turbine’s height or the given wind direction. A comparable data quality cannot be achieved by any method of ground-based wind measurements.
The combined analysis of operational data (SCADA) with wind data measured by the Lidar device enables a reliable detection of potential misalignments of the wind turbine,
for example yaw. Consequently, the turbine can be adjusted and all relevant control parameters influencing the turbine’s performance can be optimised.
UNIQUE
ZephIR DM uniquely provides a circular scan of the wind field measuring across the entire rotor swept area, allowing the company to estimate the rotor-equivalent wind speed, wind direction, veer and shear as demanded by the new IEC 61400-12-1 for the calculation of the turbines power performance. Whether located in complex terrain or within larger clusters – each turbine can be adjusted individually.
EXPENDING TURBINE LIFESPAN
Performance optimisation analysis provides clients with detailed recommendations for specific measures to be carried out. The subsequent adjustment of the turbine’s integrated sensors and amendment of control settings considerably increases the yields and reduces the operational loads on the components, thereby extending the turbine’s lifetime.
Markus Rafael Rieger Senior Marketing Consultant Ramboll
Th. Latacz, Ramboll.
wind development and estimates that using Floating LiDAR systems significantly reduces the cost of offshore wind resource assessment.
www.windenergynetwork.co.uk
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