DK1045988T3 - Detektering og kontrol af svingninger i en vindmølle - Google Patents
Detektering og kontrol af svingninger i en vindmølleInfo
- Publication number
- DK1045988T3 DK1045988T3 DK99900876T DK99900876T DK1045988T3 DK 1045988 T3 DK1045988 T3 DK 1045988T3 DK 99900876 T DK99900876 T DK 99900876T DK 99900876 T DK99900876 T DK 99900876T DK 1045988 T3 DK1045988 T3 DK 1045988T3
- Authority
- DK
- Denmark
- Prior art keywords
- wind turbine
- oscillations
- detection
- control
- control system
- Prior art date
Links
- 230000010355 oscillation Effects 0.000 title abstract 3
- 238000001514 detection method Methods 0.000 title 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010183 spectrum analysis Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0296—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/82—Forecasts
- F05B2260/821—Parameter estimation or prediction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/334—Vibration measurements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/335—Output power or torque
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Control Of Eletrric Generators (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK4698 | 1998-01-14 | ||
PCT/DK1999/000020 WO1999036695A1 (fr) | 1998-01-14 | 1999-01-14 | Procede de mesure et de limitation des oscillations dans une eolienne |
Publications (1)
Publication Number | Publication Date |
---|---|
DK1045988T3 true DK1045988T3 (da) | 2002-10-14 |
Family
ID=8089123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK99900876T DK1045988T3 (da) | 1998-01-14 | 1999-01-14 | Detektering og kontrol af svingninger i en vindmølle |
Country Status (11)
Country | Link |
---|---|
US (1) | US6525518B1 (fr) |
EP (1) | EP1045988B1 (fr) |
JP (1) | JP4226783B2 (fr) |
CN (1) | CN1092760C (fr) |
AT (1) | ATE219553T1 (fr) |
AU (1) | AU2046499A (fr) |
CA (1) | CA2318386C (fr) |
DE (1) | DE69901876T2 (fr) |
DK (1) | DK1045988T3 (fr) |
ES (1) | ES2178872T3 (fr) |
WO (1) | WO1999036695A1 (fr) |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19948194C2 (de) * | 1999-10-06 | 2001-11-08 | Aloys Wobben | Verfahren zur Überwachung von Windenergieanlagen |
DE19948196A1 (de) | 1999-10-06 | 2001-05-17 | Aloys Wobben | Verfahren zum Betrieb eines Windparks |
DE10016912C1 (de) * | 2000-04-05 | 2001-12-13 | Aerodyn Eng Gmbh | Turmeigenfrequenzabhängige Betriebsführung von Offshore-Windenergieanlagen |
DE20021970U1 (de) | 2000-12-30 | 2001-04-05 | Igus Ingenieurgemeinschaft Umweltschutz Meß-und Verfahrenstechnik GmbH, 01099 Dresden | Einrichtung zur Überwachung des Zustandes von Rotorblättern an Windkraftanlagen |
DE10065314B4 (de) * | 2000-12-30 | 2007-08-16 | Igus - Innovative Technische Systeme Gmbh | Verfahren und Einrichtung zur Überwachung des Zustandes von Rotorblättern an Windkraftanlagen |
DE10106208C2 (de) | 2001-02-10 | 2002-12-19 | Aloys Wobben | Windenergieanlage |
DE10113038C2 (de) | 2001-03-17 | 2003-04-10 | Aloys Wobben | Turmschwingungsüberwachung |
DE10115267C2 (de) * | 2001-03-28 | 2003-06-18 | Aloys Wobben | Verfahren zur Überwachung einer Windenergieanlage |
DE10323785B4 (de) * | 2003-05-23 | 2009-09-10 | Wobben, Aloys, Dipl.-Ing. | Verfahren zum Erkennen eines Eisansatzes an Rotorblättern |
AU2004316333B2 (en) | 2004-02-27 | 2010-09-02 | Mitsubishi Heavy Industries, Ltd. | Wind turbine generator, active damping method thereof, and windmill tower |
NO20041208L (no) * | 2004-03-22 | 2005-09-23 | Sway As | Fremgangsmate for reduskjon av aksialkraftvariasjoner for rotor samt retningskontroll for vindkraft med aktiv pitchregulering |
JP4766844B2 (ja) * | 2004-06-08 | 2011-09-07 | 株式会社Ihi | 水上風力発電装置 |
US7118339B2 (en) * | 2004-06-30 | 2006-10-10 | General Electric Company | Methods and apparatus for reduction of asymmetric rotor loads in wind turbines |
DE102005017054B4 (de) * | 2004-07-28 | 2012-01-05 | Igus - Innovative Technische Systeme Gmbh | Verfahren und Vorrichtung zur Überwachung des Zustandes von Rotorblättern an Windkraftanlagen |
FI118027B (fi) * | 2004-08-11 | 2007-05-31 | Abb Oy | Menetelmä tuulivoimalan yhteydessä |
US7822560B2 (en) * | 2004-12-23 | 2010-10-26 | General Electric Company | Methods and apparatuses for wind turbine fatigue load measurement and assessment |
US7573160B2 (en) | 2005-07-20 | 2009-08-11 | General Electric Company | Methods and apparatus for controlling windfarms and windfarms controlled thereby |
NO325856B1 (no) * | 2005-11-01 | 2008-08-04 | Hywind As | Fremgangsmåte for demping av ustabile frie stivlegeme egensvingninger ved en flytende vindturbininstallasjon |
DE102006022266A1 (de) * | 2005-11-04 | 2007-05-10 | Daubner & Stommel GbR Bau-Werk-Planung (vertretungsberechtigter Gesellschafter: Matthias Stommel, 27777 Ganderkesee) | Windenergieanlage |
JP4814644B2 (ja) * | 2006-02-01 | 2011-11-16 | 富士重工業株式会社 | 風力発電装置 |
DE112007001675A5 (de) | 2006-05-15 | 2009-04-16 | Igus - Innovative Technische Systeme Gmbh | Verfahren zur Überwachung der Beanspruchung von Rotorblättern von Windkraftanlagen |
AU2007304633B2 (en) | 2006-10-02 | 2011-02-24 | Vestas Wind Systems A/S | A wind turbine, a method for damping edgewise oscillations in one or more blades of a wind turbine by changing the blade pitch and use hereof |
MX2009003618A (es) * | 2006-10-24 | 2009-06-17 | Vestas Wind Sys As | Un metodo para amortiguar oscilaciones de la torre, una turbina eolica de rgulacion activa por perdida de sustentacion y su uso. |
DE102006054666B4 (de) * | 2006-11-17 | 2010-01-14 | Repower Systems Ag | Schwingungsdämpfung einer Windenergieanlage |
CN101589229B (zh) * | 2006-12-08 | 2011-11-16 | 维斯塔斯风力系统有限公司 | 减弱风轮机的一个或多个叶片中的边沿振荡的方法,主动失速控制式风轮机及其使用 |
ES2546939T3 (es) * | 2006-12-21 | 2015-09-30 | General Electric Company | Turbina eólica y procedimiento de detección de hielo asimétrico en una turbina eólica |
DE102007008761B4 (de) * | 2007-02-22 | 2010-10-07 | Schuler Pressen Gmbh & Co. Kg | Windkraftanlage mit verspanntem Getriebe |
DK179081B1 (da) | 2007-06-25 | 2017-10-16 | Siemens Wind Power As | Overvågning af en vindmølles vingefrekvenser |
WO2009068599A2 (fr) | 2007-11-28 | 2009-06-04 | Vestas Wind Systems A/S | Procédé pour amortir des oscillations dans une éolienne |
US20090148289A1 (en) * | 2007-12-06 | 2009-06-11 | Thomas Edenfeld | Active damper against generator base frame vibrations |
EP2072975A1 (fr) * | 2007-12-19 | 2009-06-24 | Siemens Aktiengesellschaft | Procédé et appareil pour la surveillance de la condition automatique à base de vibrations d'une éolienne |
US8434216B2 (en) * | 2008-01-08 | 2013-05-07 | General Electric Company | Methods and systems for in-situ machine maintenance |
EP2263126B1 (fr) * | 2008-03-07 | 2014-10-29 | Vestas Wind Systems A/S | Système de commande et procédé pour commander une éolienne |
US8004100B2 (en) | 2008-03-14 | 2011-08-23 | General Electric Company | Model based wind turbine drive train vibration damper |
ES2327488B1 (es) * | 2008-04-15 | 2010-06-18 | GAMESA INNOVATION & TECHNOLOGY, S.L. | Un sistema de evaluacion y control del rendimiento de un aerogenerador. |
US7942629B2 (en) * | 2008-04-22 | 2011-05-17 | General Electric Company | Systems and methods involving wind turbine towers for power applications |
CN102144094B (zh) | 2008-08-06 | 2014-06-25 | 维斯塔斯风力系统集团公司 | 用于风力涡轮机塔架的可调节悬挂装置 |
US8186950B2 (en) * | 2008-12-23 | 2012-05-29 | General Electric Company | Aerodynamic device for detection of wind turbine blade operation |
US7896613B2 (en) * | 2009-06-03 | 2011-03-01 | General Electric Company | System and method for wind turbine noise control and damage detection |
US8123478B2 (en) | 2010-05-26 | 2012-02-28 | General Electric Company | Systems and methods for monitoring a condition of a rotor blade for a wind turbine |
US8360722B2 (en) * | 2010-05-28 | 2013-01-29 | General Electric Company | Method and system for validating wind turbine |
RU2444646C1 (ru) * | 2010-06-17 | 2012-03-10 | Государственное образовательное учреждение высшего профессионального образования "Московский энергетический институт (технический университет)" (ГОУВПО "МЭИ(ТУ)") | Способ управления ветроэнергетической установкой и устройство для его реализации |
US20110182730A1 (en) * | 2010-07-27 | 2011-07-28 | Vestas Wind Systems A/S | Wind turbine blade with damping element for edgewise vibrations |
RU2451828C2 (ru) * | 2010-08-05 | 2012-05-27 | Общество с ограниченной ответственностью "АВТЭКС" | Система безопасности ветрогенераторов и устройств с лопастями винтов |
DE102010053523B4 (de) * | 2010-12-04 | 2015-09-10 | Nordex Energy Gmbh | Verfahren zur Überwachung einer statischen und/oder dynamischen Stabilität einer Windenergieanlage |
US8169098B2 (en) * | 2010-12-22 | 2012-05-01 | General Electric Company | Wind turbine and operating same |
ES2398051B1 (es) * | 2011-06-28 | 2014-09-05 | Gamesa Innovation & Technology S.L. | Un método para la identificación de la frecuencia principal del tren de potencia de un aerogenerador. |
DE102011057175A1 (de) * | 2011-12-30 | 2013-07-04 | Prüftechnik Dieter Busch AG | Verfahren zur Schwingungsmessung an Rotorblättern von Windenergieanlagen |
AT512833B1 (de) | 2012-05-10 | 2014-08-15 | Hehenberger Gerald Dipl Ing | Energiegewinnungsanlage, insbesondere Windkraftanlage |
DE102012218484A1 (de) * | 2012-10-10 | 2014-04-10 | Wobben Properties Gmbh | Verfahren zum Betreiben einer Windenergieanlage |
EP2754889B1 (fr) * | 2013-01-15 | 2016-11-16 | ABB Schweiz AG | Procédé et appareil de commande d'amortissement de vibrations pour une éolienne |
KR101458798B1 (ko) * | 2014-02-20 | 2014-11-07 | 두산중공업 주식회사 | 풍력 발전 단지, 풍력 발전 단지의 배치 구조, 풍력 발전 단지의 제어 방법 및 풍력 발전 유닛. |
WO2015198793A1 (fr) | 2014-06-24 | 2015-12-30 | Ntn株式会社 | Système de surveillance de conditions et système de génération d'énergie éolienne l'utilisant |
WO2016017396A1 (fr) * | 2014-07-29 | 2016-02-04 | Ntn株式会社 | Système de surveillance d'état et système de génération d'énergie éolienne équipé de celui-ci |
JP6320218B2 (ja) * | 2014-07-29 | 2018-05-09 | Ntn株式会社 | 状態監視システム及びそれを備えた風力発電システム |
EP3180513B1 (fr) * | 2014-08-13 | 2017-12-27 | Vestas Wind Systems A/S | Améliorations concernant la détermination de déséquilibres de rotor dans une turbine éolienne |
CN104165689B (zh) * | 2014-08-26 | 2017-02-22 | 国电联合动力技术有限公司 | 一种风电机组偏航噪声检测方法及检测装置 |
DE102014225638A1 (de) * | 2014-12-12 | 2016-06-30 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Überwachen einer Windenergieanlage |
US11396864B2 (en) * | 2016-03-31 | 2022-07-26 | Vestas Wind Systems A/S | Condition monitoring and controlling of heating elements in wind turbines |
US10337495B2 (en) * | 2016-05-19 | 2019-07-02 | General Electric Company | System and method for reducing vortex-induced tower vibrations of a wind turbine |
ES2716774A1 (es) * | 2017-12-14 | 2019-06-14 | Siemens Gamesa Renewable Energy Innovation & Technology SL | Método de control de un aerogenerador y un aerogenerador que comprende unos medios de control configurados para llevar a cabo el método de control |
EP3663573B1 (fr) | 2018-12-04 | 2022-08-24 | General Electric Renovables España S.L. | Procédé pour réduire les vibrations dans des pales de rotor d'une éolienne |
DE102018132413A1 (de) | 2018-12-17 | 2020-06-18 | Wobben Properties Gmbh | Verfahren zum Erfassen unterschiedlicher Schwingungen einer Windenergieanlage |
US11208986B2 (en) | 2019-06-27 | 2021-12-28 | Uptake Technologies, Inc. | Computer system and method for detecting irregular yaw activity at a wind turbine |
US10855079B1 (en) | 2019-07-19 | 2020-12-01 | General Electric Company | System and method for reducing oscillations in a renewable energy power system |
US10975841B2 (en) * | 2019-08-02 | 2021-04-13 | Uptake Technologies, Inc. | Computer system and method for detecting rotor imbalance at a wind turbine |
EP4386200A1 (fr) * | 2022-12-13 | 2024-06-19 | Siemens Gamesa Renewable Energy A/S | Système et procédé de fonctionnement d'une éolienne flottante, éolienne flottante, parc éolien, produit programme d'ordinateur et support d'informations lisible par ordinateur |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3758758A (en) * | 1972-03-10 | 1973-09-11 | United Aircraft Corp | Weighting rotational statistical vibration analysis employing sidebands and/or |
US4160170A (en) | 1978-06-15 | 1979-07-03 | United Technologies Corporation | Wind turbine generator pitch control system |
GB2096770A (en) | 1981-04-14 | 1982-10-20 | Standard Telephones Cables Ltd | Testing mechanical components of electrical machines |
US4435647A (en) * | 1982-04-02 | 1984-03-06 | United Technologies Corporation | Predicted motion wind turbine tower damping |
US4515525A (en) * | 1982-11-08 | 1985-05-07 | United Technologies Corporation | Minimization of the effects of yaw oscillations in wind turbines |
US5140856A (en) * | 1990-12-03 | 1992-08-25 | Dynamic Rotor Balancing, Inc. | In situ balancing of wind turbines |
US5614676A (en) * | 1996-03-08 | 1997-03-25 | The Goodyear Tire & Rubber Company | Method of machine vibration analysis for tire uniformity machine |
US6137187A (en) * | 1997-08-08 | 2000-10-24 | Zond Energy Systems, Inc. | Variable speed wind turbine generator |
US6327957B1 (en) * | 1998-01-09 | 2001-12-11 | Wind Eagle Joint Venture | Wind-driven electric generator apparatus of the downwind type with flexible changeable-pitch blades |
-
1999
- 1999-01-14 ES ES99900876T patent/ES2178872T3/es not_active Expired - Lifetime
- 1999-01-14 JP JP2000540370A patent/JP4226783B2/ja not_active Expired - Fee Related
- 1999-01-14 DE DE69901876T patent/DE69901876T2/de not_active Expired - Lifetime
- 1999-01-14 DK DK99900876T patent/DK1045988T3/da active
- 1999-01-14 AU AU20464/99A patent/AU2046499A/en not_active Abandoned
- 1999-01-14 CA CA002318386A patent/CA2318386C/fr not_active Expired - Fee Related
- 1999-01-14 AT AT99900876T patent/ATE219553T1/de not_active IP Right Cessation
- 1999-01-14 WO PCT/DK1999/000020 patent/WO1999036695A1/fr active IP Right Grant
- 1999-01-14 CN CN99802049A patent/CN1092760C/zh not_active Expired - Lifetime
- 1999-01-14 US US09/600,286 patent/US6525518B1/en not_active Expired - Lifetime
- 1999-01-14 EP EP99900876A patent/EP1045988B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1045988B1 (fr) | 2002-06-19 |
JP2002509222A (ja) | 2002-03-26 |
CA2318386C (fr) | 2008-10-21 |
ATE219553T1 (de) | 2002-07-15 |
CA2318386A1 (fr) | 1999-07-22 |
EP1045988A1 (fr) | 2000-10-25 |
CN1288505A (zh) | 2001-03-21 |
WO1999036695A1 (fr) | 1999-07-22 |
DE69901876T2 (de) | 2003-02-20 |
ES2178872T3 (es) | 2003-01-01 |
US6525518B1 (en) | 2003-02-25 |
JP4226783B2 (ja) | 2009-02-18 |
DE69901876D1 (de) | 2002-07-25 |
AU2046499A (en) | 1999-08-02 |
CN1092760C (zh) | 2002-10-16 |
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