Mauricio Fragoso_结合短期激光雷达测量和长期卫星观测进行海上风资源评估.pdf

1、Mauricio FragosoHead of Energy&Infrastructures divisionCLS GroupCombining short-term lidar measurementsand long-term satellite observationsfor offshore wind resource assessmentWind assessment:state-of-the-art(FLOATING)LIDARS(FLOATING)LIDARSHigh precisionHigh frequency40-250 mSingle pointOne-to two-y

2、ear databaseATMOSPHERIC MODELSATMOSPHERIC MODELSSpatial and temporal coverageStrong dependency on numerical parametrisationFlatten extremesPoor coast-to-offshore gradient representationMeasure-Correlate-Predict(MCP)methods in IEC 61400-1Long-term correction of measured wind data on site,based on cor

3、relation with long-term reference dataInnovative synergy including satellite observationsOffshore pre-development phaseSAR observation available;No lidarWhen Lidar dataavailableMETOCEAN BUOYS*SARIMAGERY*MACHINE LEARNINGLev 1SARWindSARWind ATLASATLASLevel 2+Incorporating insitu data Emulation of virt

4、ual lidarsWIND TURBINE POWERLev 2SARWindSARWind POWERPOWERHIGH-RESOLUTIONATMOSPHERIC MODELINSITUDATALev 3SARWindSARWind INSITUINSITU(*)2 European satellites since 2015(*)22,000 co-locations NDBC wave buoysEXISTING LIDARS*(*)+30 years12 lidarsin North SeaMACHINE LEARNINGOffshore wind atlas&Weibull di

5、stributions at surfaceOffshore wind atlas&Weibull distributions&Gross AEPat 40-250 m(without wake effects)1.What are SAR observations?2.How do we get wind from SAR?3.And in altitude?4.Is it validated?5.How can we use such data?SAR observationsSynthetic Aperture RadarSynthetic Aperture RadarEmission/

6、reception of electromagnetic waves(C-band)Interaction with O(5 cm)ripples in equilibrium with wind stressBackscattered signalImage of normalized radar cross section(NRCS)Day and night,no cloud contaminationSpaceborne systemSpaceborne systemWide coverage(250 to 400 km)20-year databaseENVISAT(2004-201