基于星载合成孔径雷达与地基多普勒激光雷达的海洋风力发电机尾流三维多尺度探测研究

项目名称： 基于星载合成孔径雷达与地基多普勒激光雷达的海洋风力发电机尾流三维多尺度探测研究

项目编号： No.41471309

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 李晓明

作者单位： 中国科学院遥感与数字地球研究所

项目金额： 90万元

中文摘要： 海洋风力发电机尾流直接影响发电效率和风机疲劳载荷，并对局部海洋、大气环境有潜在影响，因此尾流的研究对海洋风力发电场优化布局、安全运行及环境评估具有重要意义。随着海洋风电建设的迅猛发展，尾流研究日益受到关注。本研究立足我国第一座大型海洋风力发电场-东海大桥风电场，旨在综合利用星载合成孔径雷达和地基多普勒激光雷达开展尾流三维多尺度探测研究。利用具有高空间分辨率的新一代星载合成孔径雷达及其反演的海面风场，提取尾流特征参数，研究尾流多尺度二维空间特征和变化规律。利用多普勒激光雷达探测一维风廓线和二维海洋风场，研究尾流三维中小尺度时空特征。开展星载合成孔径雷达和多普勒激光雷达的协同观测实验，刻画尾流三维多尺度时空特征，揭示尾流从起源点至海面、从尾流产生点至近尾流区,再达远尾流区的三维空间演变规律与机理。

中文关键词： 海洋风电机尾流；主动微波遥感；星载合成孔径雷达；多普勒激光雷达；多遥感器协同观测

英文摘要： Offshore wind turbine wake has significant impacts on efficiency of power output,fatigue load of turbines, as well as potential influence on local marine-atmosphere environment. Therefore, studies of offshore wind turbine waks have significant importance for offsore wind farm layout optimization, operation saftey and environment evaluation. Along with rapid growth of offshore wind farm, studies of wind turbine wake are being paid increasing attention. The proposed project is dedicated to studying the three-dimensional and multi-scale characteristics of wind turbine wake of the first large-scale offshore wind farm in China, i.e. the DongHai Bridge offshore wind farm, based on spaceborne Syntheic Aperture Radar (SAR) and ground-based Doppler Lidar. By using the new-generation spaceborne SAR with high spatial resolution and the retrieved sea surface wind field, parameters of wind turbine wake are derived and its two-dimensional characteristics in multi-scale are consequently stuied. The ground-based Doppler Lidar is set to detect wind profile and two-dimensional wind field to study the three-dimensional characteristics of wind turbine wake. Synergic experiments using spaceborne SAR and ground-based Doppler Lidar are conducted to study three-dimensional characteristics of wind turbine wake, which aims to reveal the spatial evolution rules and mechanisms of offshore wind turbine wake propagation from turbine height to sea surface and from generation point to near wake and far wake regions.

英文关键词： offshore wind turbine wake;active microwave remote sensing;spaceborne synthetic aperture radar;Doppler Lidar;Synergic observation by multiple sensors