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DE102004044211A1 - Offshore wind profile measurement procedure uses SODAR phased array with phases shifts to correct for buoy motion - Google Patents

Offshore wind profile measurement procedure uses SODAR phased array with phases shifts to correct for buoy motion Download PDF

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Publication number
DE102004044211A1
DE102004044211A1 DE200410044211 DE102004044211A DE102004044211A1 DE 102004044211 A1 DE102004044211 A1 DE 102004044211A1 DE 200410044211 DE200410044211 DE 200410044211 DE 102004044211 A DE102004044211 A DE 102004044211A DE 102004044211 A1 DE102004044211 A1 DE 102004044211A1
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DE
Germany
Prior art keywords
sodar
buoy
offshore wind
measurement procedure
wind profile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE200410044211
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German (de)
Inventor
Oliver Kugeler
Christian Dede
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dede Christian Dr
Kugeler Oliver Dr
Original Assignee
Dede Christian Dr
Kugeler Oliver Dr
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Filing date
Publication date
Application filed by Dede Christian Dr, Kugeler Oliver Dr filed Critical Dede Christian Dr
Priority to DE200410044211 priority Critical patent/DE102004044211A1/en
Publication of DE102004044211A1 publication Critical patent/DE102004044211A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/885—Meteorological systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52004—Means for monitoring or calibrating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
    • G01W1/04—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed giving only separate indications of the variables measured

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Atmospheric Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

An offshore wind profile measurement procedure uses SODAR (Sonic Detection and Ranging) to make measurements from a buoy or other moving platform with platform position and tilt sensors to provide buoy movement corrections to the transmitted wave front using phase shifts in the transmitter array.

Description

Für meteorologische Zwecke oder im Zusammenhang mit Einrichtung oder Betrieb von Windkraftanlagen ist die Erfassung von vertikalen Windprofilen erforderlich. Diese Messungen erfolgen nach Stand der Technik auf dem Land z.B. mit Hilfe von Messmasten oder Fernmessverfahren, z.B. SODAR.For meteorological Purposes or in connection with the installation or operation of wind turbines it is necessary to record vertical wind profiles. These Measurements are made in the state of the art on land e.g. With Help of measuring masts or telemetry methods, e.g. SODAR.

Die Errichtung von Messmasten im Offshore-Bereich ist mit unverhältnismäßigem Aufwand verbunden, der bisher nur für Forschungsaufgaben realisiert wurde. Insbesondere die aufwändige Gründung und die hohen Belastungen aus Seegang erzeugen im Vergleich zu landgestützten Systemen unwirtschaftlich hohe Kosten.The Erection of measuring masts in the offshore area is associated with disproportionate effort, so far only for Research tasks was realized. In particular, the elaborate foundation and the high loads from sea state generate in comparison to land based systems uneconomically high costs.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur sicheren und kostengünstigen Erfassung von Winddaten im Offshore-Bereich bereitzustellen.Of the Invention is based on the object, a method for safe and cost-effective Collect wind data in the offshore area.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass am Messort eine Boje installiert wird, die als Träger für die SODAR-Messtechnik dient, wobei Eigenbewegungen der Boje durch ein neues Verfahren kompensiert werden.These Task is inventively characterized solved, that a buoy is installed at the measuring location, which serves as a carrier for the SODAR measuring technology, whereby proper movements of the buoy compensated by a new method become.

Bei der Windmessung mit dem SODAR-Verfahren (Sonic Detection and Ranging) werden gerichtete akustische Signale in die Atmosphäre emittiert. Diese werden auf ihrem Weg an Turbulenzen reflektiert und erfahren dabei eine Dopplerverschiebung, die abhängig von der Geschwindigkeit dieser Turbulenz, respektive der Windgeschwindigkeit ist. Durch Messung der Frequenzverschiebung des reflektierten Signals lässt sich die Vertikalkomponente der Windgeschwindigkeit ermitteln, aus den Laufzeiten ergibt sich die jeweilige Entfernung und somit auch ein Höhenprofil. Durch zusätzliche Emission von Signalen in von der Vertikalen abweichende Raumrichtungen lassen sich aus Projektionsrechnungen auch die horizontalen Komponenten ermitteln, was somit ein dreidimensionales Windprofil liefert.at wind measurement using the SODAR method (Sonic Detection and Ranging) Directed acoustic signals are emitted into the atmosphere. These are reflected on their way to turbulence and experience it a Doppler shift, which depends on the speed this turbulence, respectively the wind speed is. By measurement the frequency shift of the reflected signal can be determine the vertical component of the wind speed, from the Running times results in the respective distance and thus also one Height profile. By additional Emission of signals in directions deviating from the vertical projections can also be used to calculate the horizontal components determine what thus provides a three-dimensional wind profile.

Die Kontrolle der Emissionsrichtung erfolgt beim "phased array" SODAR durch eine zweidimensionale Anordnung von Emittern. Diese erzeugen eine quasi-ebene Wellenfront, deren Ausbreitungsrichtung durch Einstellen einer geeigneten (statischen) Verzögerung (Phasenverschiebung) zwischen benachbarten Signalen vorgegeben werden kann.The Control of the emission direction takes place in the "phased array" SODAR by a two-dimensional arrangement of emitters. These generate a quasi-level wavefront whose Propagation direction by setting a suitable (static) delay (Phase shift) between adjacent signals can be specified.

Problematisch bei der SODAR-Technik ist die Empfindlichkeit des Verfahrens gegen z.B. seegangsbedingte Bewegungen der Messplattform.Problematic in the SODAR technique, the sensitivity of the method is against e.g. Seegangsbedingte movements of the measuring platform.

Die Kompensation solcher Eigenbewegungen der Messapparatur wird erfindungsgemäß dadurch gewährleistet, dass zunächst mit Hilfe geeigneter Sensoren die polare und azimuthale Neigung der Boje, bzw. des SODAR erfasst wird. Mit dieser Information lässt sich dynamisch eine zeitliche Phasenverschiebung zwischen den einzelnen Emittern generieren, durch die die Ausbreitungsrichtung des Schallkegels von der Stellung der Messapparatur entkoppelt wird. Auf diese Weise haben die Signale stets die gleiche Richtung im Raum, unabhängig von der Stellung der Messplattform. Durch Messung der Position der SODAR-Apparatur mit Lagesensoren können Fehler durch die translatorische Bewegung erfasst und kompensiert werden.The Compensation of such proper movements of the measuring apparatus according to the invention guaranteed that first with the help of suitable sensors the polar and azimuthal inclination of the Buoy, or the SODAR is detected. With this information can be dynamically a temporal phase shift between the individual Generate emitters, through which the propagation direction of the cone of sound is decoupled from the position of the measuring apparatus. In this way the signals always have the same direction in the room, regardless of the Position of the measuring platform. By measuring the position of the SODAR device with position sensors can Error detected and compensated by the translational movement become.

Alternativ kann die Lage- und Neigungsinformation auch dazu genutzt werden, jedes Messsignal des statischen SODAR individuell zu korrigieren.alternative the position and inclination information can also be used to to correct each measuring signal of the static SODAR individually.

Claims (5)

Verfahren zur Durchführung von Messungen des Windprofils, z.B. im Offshore-Bereich, dadurch gekennzeichnet, dass die Messungen von einer beweglichen Messplattform, z.B. einer Boje aus durchgeführt werden.Method for carrying out measurements of the wind profile, eg in the offshore area, characterized in that the measurements are carried out by a mobile measuring platform, eg a buoy. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass Windmessungen mittels SODAR durchgeführt werden.Method according to claim 1, characterized in that that wind measurements are carried out by means of SODAR. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Raumlage, bzw. Neigung der Messplattform durch geeignete Lage- oder Neigungssensoren erfasst wird.Method according to claim 1, characterized in that that the spatial position, or inclination of the measuring platform by appropriate Position or inclination sensors is detected. Verfahren nach Anspruch 1, 2, und 3, dadurch gekennzeichnet, dass die Korrektur der Eigenbewegungen der Boje im SODAR durch Phasenverschiebung im Emitter-Array durchgeführt wird.Method according to claims 1, 2 and 3, characterized that the correction of the self-movements of the buoy in the SODAR by phase shifting performed in the emitter array becomes. Verfahren nach Anspruch 1, 2 und 3, dadurch gekennzeichnet, dass in beliebige Raumrichtungen emittierte SODAR-Signale mit Hilfe gemessener Lage-/Neigungsinformation korrigiert werden.Method according to Claims 1, 2 and 3, characterized that in any spatial directions emitted SODAR signals using measured attitude / inclination information Getting corrected.
DE200410044211 2004-09-06 2004-09-06 Offshore wind profile measurement procedure uses SODAR phased array with phases shifts to correct for buoy motion Withdrawn DE102004044211A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410044211 DE102004044211A1 (en) 2004-09-06 2004-09-06 Offshore wind profile measurement procedure uses SODAR phased array with phases shifts to correct for buoy motion

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DE200410044211 DE102004044211A1 (en) 2004-09-06 2004-09-06 Offshore wind profile measurement procedure uses SODAR phased array with phases shifts to correct for buoy motion

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DE102004044211A1 true DE102004044211A1 (en) 2006-03-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2153181A4 (en) * 2007-06-01 2012-04-18 Second Wind Systems Inc Position correction in sodar and meteorological lidar systems
DE102010060663A1 (en) * 2010-11-18 2012-05-24 Ssb Wind Systems Gmbh & Co. Kg Meteorological measuring arrangement
DE102013100515A1 (en) * 2013-01-18 2014-07-24 Christoph Lucks Method for controlling wind power plant or wind farm, involves carrying out measurement of wind speed and wind direction, and carrying out adjustment of rotor blades, according to pitch angle and azimuth orientation of rotor plane

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379060A (en) * 1965-10-22 1968-04-23 Radiation Inc Wind meter
US5872535A (en) * 1997-09-30 1999-02-16 National Oceanic & Atmos Admin Removing buoy motion from wind profiler moment
US6437738B1 (en) * 2001-02-12 2002-08-20 Us Commerce Hexagonal-annulus phased array antenna for radar wind profiling on moving platforms
WO2003012293A2 (en) * 2001-07-31 2003-02-13 Aloys Wobben Early-warning system comprising sodar for wind energy turbines
WO2003062044A1 (en) * 2002-01-22 2003-07-31 Bruce Kendall Main Method of and apparatus for monitoring underwater conditions
WO2005008284A1 (en) * 2003-07-11 2005-01-27 Qinetiq Limited Wind speed measurement apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3379060A (en) * 1965-10-22 1968-04-23 Radiation Inc Wind meter
US5872535A (en) * 1997-09-30 1999-02-16 National Oceanic & Atmos Admin Removing buoy motion from wind profiler moment
US6437738B1 (en) * 2001-02-12 2002-08-20 Us Commerce Hexagonal-annulus phased array antenna for radar wind profiling on moving platforms
WO2003012293A2 (en) * 2001-07-31 2003-02-13 Aloys Wobben Early-warning system comprising sodar for wind energy turbines
WO2003062044A1 (en) * 2002-01-22 2003-07-31 Bruce Kendall Main Method of and apparatus for monitoring underwater conditions
WO2005008284A1 (en) * 2003-07-11 2005-01-27 Qinetiq Limited Wind speed measurement apparatus and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2153181A4 (en) * 2007-06-01 2012-04-18 Second Wind Systems Inc Position correction in sodar and meteorological lidar systems
DE102010060663A1 (en) * 2010-11-18 2012-05-24 Ssb Wind Systems Gmbh & Co. Kg Meteorological measuring arrangement
US9075168B2 (en) 2010-11-18 2015-07-07 Ssb Wind Systems Gmbh & Co. Kg Meteorological measurement system
DE102010060663B4 (en) 2010-11-18 2018-03-08 Ssb Wind Systems Gmbh & Co. Kg Meteorological measuring arrangement
DE102013100515A1 (en) * 2013-01-18 2014-07-24 Christoph Lucks Method for controlling wind power plant or wind farm, involves carrying out measurement of wind speed and wind direction, and carrying out adjustment of rotor blades, according to pitch angle and azimuth orientation of rotor plane

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Inventor name: INVENTOR IS APPLICANT