FEATURE SPONSOR


MET MASTS


VALIDATING MET MASTS AND WIND SHEAR


PROFILES WITH LIDAR Wind measurements are the corner stone to a successful wind energy project


Meteorological masts have been fundamental to wind measurements over the last 30 years. Their measurement and monitoring systems have enabled resource assessment, the continued monitoring of wind yields and ongoing data provision on windfarm performance.


Once operational meteorological masts can however become a neglected asset – production priorities and operations & maintenance activity on turbines take precedence and masts and therefore the accuracy of data collected becomes uncertain. Uncertainty leads to underutilisation of this once significant data set.


UNDERSTANDING AND RECOGNITION When considering this underutilisation of wind data, we must look at all other power generating systems. In every case, you measure the input fuel – in this case the wind – to understand the system’s efficiency and effectiveness to produce power. We should not therefore be limited by the practical and cost constraints of maintaining the measurement device for such an otherwise useful means of assessing plant performance.


Recognising that this unintended consequence of market development was depriving owners and investors of data that could significantly improve their asset performance and by extension, their financial return, renewable development and advisory business Dulas, are able to provide windfarm owners with a met mast verification service, with industry- leading wind lidar ZephIR 300, by ZephIR Lidar.


www.windenergynetwork.co.uk 75


MAST VERIFICATION SERVICE The mast verification service ensures that meteorological masts are correctly calibrated and that their data is verified throughout the lifetime of the windfarm development. Further, the Lidar, capable of measuring far higher than the mast, is used to verify wind shear profile up to hub height and even turbine tip height to significantly reduce any vertical uncertainty associated with the previously collected mast wind data.


The lidar is a fully calibrated system, verified against ‘gold-standard’ lidars in addition to a traditional, well- instrumented and calibrated met mast at the IEC-compliant UK Remote


Sensing Test Site. There have been more than 300 such validations to date – the most of any remote sensing device at a single consistent test site.


COST SAVINGS


During the mast verification, the lidar is simply moved to site to compare data sets with the operating project masts, enabling project owners to save the significant cost of personnel lowering the mast to test and validate, or sending a team to the top of the tower to carry out the testing in situ.


ZephIR Lidar


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