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Windtech International July August 2024 issue

 

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Zephir IEC standardZephIR Lidar has announced that its ground-based vertical profiling wind Lidar has successfully met the full conditions for satisfying the IEC 61400-12-1: 2017 Ed. 2 standard. The IEC standard involves the classification of a remote sensing device type by assessing the accuracy of that device in the context of the environmental conditions experienced from two separate test sites.
 
The same unit is deployed at each site over a period of three months or more and an additional unit is also deployed at one of the same test sites. Results released today feature campaigns from a DNV GL Remote Sensing Test Site, in addition to the UK Remote Sensing Test Site which is also assessed for IEC compliance by DNV GL. The classifications covered deployments in Autumn, Winter and Spring, 2017 through to early 2018. The environmental variables considered in the classification included: Air Density; Local Shear Coefficient; Pressure; Rain; Temperature; Temperature Gradient; Turbulence Intensity; Veer Coefficient; Wind Direction. By way of summary, accuracy classes of 1.5 to 3.7 were calculated for ZephIR. As an example, an accuracy class of 1.5 represents a standard uncertainty of just 0.8%.
 
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