{"id":16,"date":"2011-10-14T17:20:23","date_gmt":"2011-10-14T17:20:23","guid":{"rendered":"http:\/\/more.engineering.asu.edu\/windlab\/?page_id=16"},"modified":"2011-10-14T17:20:23","modified_gmt":"2011-10-14T17:20:23","slug":"wind-energy","status":"publish","type":"page","link":"https:\/\/labs.engineering.asu.edu\/windlab\/wind-energy\/","title":{"rendered":"Wind Energy"},"content":{"rendered":"
\"\"Wind energy is one of the fastest growing sources of electricity in the world. \u00a0A high-quality site wind speed measurement campaign is crucial for reducing the uncertainty in the predicted energy production of a proposed project. \u00a0The goal for a wind measurement campaign is to provide information to allow the best possible estimate of the energy on the site to be provided.<\/address>\n
Remote sensing techniques are now being used to measure the wind speeds at wind farm sites. \u00a0 Remote sensing is winning broader acceptance in the wind industry as wind farm developers use it to measure wind characteristics such as in-flow angle and turbulence and investors gain confidence in remote sensing data. \u00a0The technology available for this is being developed rapidly and it is expected to become more widely used in the near future.\u00a0 Lidar devices have made an entry into the wind market over the last few years and a few main commercial products (ZEPHyIR, WindCube, Halo, WindTracer etc..) are currently available with additional models now entering the market.<\/address>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Three-Dimensional (3D) coherent Doppler lidars have been extensively used in meteorological studies for the past few decades.\u00a0 Modern 3\u2011D scanning coherent Doppler lidars are well suited for characterizing wind farm airsheds, and may eventually form a new basis for real\u2011time adaptive control of wind turbines.\u00a0 Lidars can measure the velocity deficit downstream of an individual wind turbine, as well as the accumulated wakes from an array of turbines.\u00a0 ERSG owns a WindTracer<\/em> coherent Doppler lidar, from Lockheed Martin Coherent Technologies, Inc..<\/em> Typical range of these instruments are 10 ~ 20 km, depending on the atmospheric conditions.<\/h4>\n

 <\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 The flexibility of lidar to perform conical (Plan Position Indicator [PPI]), vertical-slice (Range Height Indicator [RHI]) or fixed-beam measurements, allows investigation of a variety of boundary layer characteristics.\u00a0 The wind-field structure from different points of view can be visualized, for example, mean wind and turbulent profiles, time series, or as images of individual scans \u2013 to reveal flow features at hub height and above the range of tower measurements.\u00a0 3D scanning coherent Doppler lidar is capable of producing wind speed distribution of the wind field as a function of space<\/em>.\u00a0 This can be used to obtain a spatial power density distribution over the entire region.\u00a0 The main advantages of deploying a 3D scanning Doppler lidar for wind farm assessment are:<\/h4>\n
\u00a0<\/address>\n

i.\u00a0\u00a0\u00a0\u00a0\u00a0 To characterize the spatial wind field at the hub height over the entire region.<\/h4>\n

ii.\u00a0\u00a0\u00a0\u00a0\u00a0 To calculate (spatially varying) wind speed distribution, and spatial power density distribution over the region of interest,<\/h4>\n

iii.\u00a0\u00a0\u00a0\u00a0\u00a0 To estimate power density using multiple vertical layers within the rotor swept area,<\/h4>\n

iv.\u00a0\u00a0\u00a0\u00a0\u00a0 To demonstrate a simple algorithm for wind farm layout design based on spatial power density distribution and distance limitation,<\/h4>\n

v.\u00a0\u00a0\u00a0\u00a0\u00a0 Apply advanced optimal interpolation retrieval algorithms to lidar data and many more.<\/h4>\n","protected":false},"excerpt":{"rendered":"

Wind energy is one of the fastest growing sources of electricity in the world. \u00a0A high-quality site wind speed measurement campaign is crucial for reducing the uncertainty in the predicted energy production of a proposed project. \u00a0The goal for a wind measurement campaign is to provide information to allow the best possible estimate of the…<\/p>\n","protected":false},"author":391,"featured_media":0,"parent":0,"menu_order":25,"comment_status":"closed","ping_status":"open","template":"showcase.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-16","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/pages\/16","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/users\/391"}],"replies":[{"embeddable":true,"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/comments?post=16"}],"version-history":[{"count":0,"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/pages\/16\/revisions"}],"wp:attachment":[{"href":"https:\/\/labs.engineering.asu.edu\/windlab\/wp-json\/wp\/v2\/media?parent=16"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}