DE102017001357A1 - Acoustic monitoring of a wind turbine to detect ice adherence to the rotor blades. - Google Patents
Acoustic monitoring of a wind turbine to detect ice adherence to the rotor blades. Download PDFInfo
- Publication number
- DE102017001357A1 DE102017001357A1 DE102017001357.8A DE102017001357A DE102017001357A1 DE 102017001357 A1 DE102017001357 A1 DE 102017001357A1 DE 102017001357 A DE102017001357 A DE 102017001357A DE 102017001357 A1 DE102017001357 A1 DE 102017001357A1
- Authority
- DE
- Germany
- Prior art keywords
- rotor blades
- wind turbine
- ice
- acoustic monitoring
- detect
- 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.)
- Ceased
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/40—Ice detection; De-icing means
-
- 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
- F05B2270/333—Noise or sound levels
-
- 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
- F05B2270/80—Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
- F05B2270/804—Optical devices
- F05B2270/8041—Cameras
-
- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
Kommt es zu Eisanhaftungen (2) an Rotorblättern (1) von Windenergieanlagen (6), können diese sicher erkannt werden, indem das aerodynamische Betriebsgeräusch der Rotorblätter (1) überwacht wird und bei Veränderungen im aerodynamischen Betriebsgeräusch geeignete Maßnahmen getroffen werden, um eine weitere Eisanhaftung (2) oder Gefahren durch Eisabwurf zu minimieren oder zu verhindern. Die Entscheidung, ob die Windenergieanlage (6) nachdem die Eisanhaftung (2) abgetaut ist, wieder anlaufen kann, kann mittels einer fotografischen Überwachung der Rotorblätter (1) getroffen werden. If ice adhering (2) to wind turbine rotor blades (1) (6) occurs, they can be reliably detected by monitoring the aerodynamic operating noise of the rotor blades (1) and taking appropriate measures to change the aerodynamic operating noise to further adhere to the ice (2) or to minimize or prevent hazards due to ice shedding. The decision as to whether the wind energy plant (6) can start again after the ice adhesion (2) has thawed can be made by means of a photographic monitoring of the rotor blades (1).
Description
Stand der Technik:State of the art:
Es ist bekannt, dass sich an Rotorblättern (
Nahezu alle in Deutschland errichteten Windenergieanlagen (
Um Eisanhaftungen (
- > Ein Verfahren erkennt die Eisanhaftung (
2 ) an durch die Eismasse verursachten kurzfristigen Änderungen in den Eigenfrequenzen der Rotorblätter (1 ). - > Ein anderes Verfahren ermittelt die wiederum kurzfristige Änderung der Rotorblattmasse aus dem sich ändernden Biegemoment des Rotorblattes (
1 ) in Schwenkrichtung. - > Seit Jahren wird auf Symposien ein Verfahren vorgestellt, dass mit Hilfe von Laserlicht die Änderung der Rotorblattgeometrie (vor allem an der Blattvorderkante ) ermittelt und so auf die Eisanhaftung (
2 ) schließt. - > Ein indirektes Verfahren misst auf dem Gondeldach der Windenergieanlage (
6 ), ob Wetterbedingungen herrschen, die eine Eisanhaftung (2 ) an den Rotorblättern (1 ) ermöglichen und überwacht ob Probekörper auf dem Gondeldach tatsächlich vereisen. - > Ein Verfahren ermittelt die Eisanhaftung (
2 ) durch die kapazitive Änderungen in einem an der Blattvorderkante angebrachten Sensor. - > Ein simples Verfahren nutzt zwei auf dem Gondeldach angebrachte Anemometer von denen nur eines beheizt wird. Das ggf. vereiste Anemometer zeigt eine deutlich geringere Windgeschwindigkeit, woraus zusammen mit einer Temperaturmessung und Luftfeuchtemessung (
9 ) auf eine Wetterlage geschlossen wird, die bewirken kann, dass sich an den Rotorblätter (1 ) Eisanhaftung (2 ) bildet. - > Da die Eisanhaftung (
2 ) die Leistungsfähigkeit der Rotorblätter (1 ) deutlich reduziert, kann aus einer Leistungskennlinienmessung u. U. noch ergänzt durch eine Temperaturmessung und Luftfeuchtemessung (9 ) geschlossen werden, dass sich an den Rotorblätter (1 ) Eisanhaftung (2 ) gebildet hat.
- > A method detects ice adhesion (
2 ) caused by the ice mass short-term changes in the natural frequencies of the rotor blades (1 ). - > Another method determines the turn short-term change in the rotor blade mass from the changing bending moment of the rotor blade (
1 ) in the pivoting direction. - > For years, a procedure has been presented at symposia that uses laser light to determine the change in the rotor blade geometry (especially at the leading edge of the blade) and thus to determine the ice adhesion (
2 ) closes. - > An indirect method measures on the gondola roof of the wind turbine (
6 ), whether weather conditions prevail, an ice attachment (2 ) on the rotor blades (1 ) and monitors whether specimens on the gondola roof actually freeze. - > A method determines ice adhesion (
2 ) by the capacitive changes in a sensor attached to the leading edge of the sheet. - > A simple procedure uses two anemometers mounted on the gondola roof, of which only one is heated. The possibly iced anemometer shows a significantly lower wind speed, which together with a temperature measurement and humidity measurement (
9 ) is closed to a weather condition that can cause the rotor blades (1 ) Ice adhesion (2 ). - > Since the ice attachment (
2 ) the performance of the rotor blades (1 ) can be significantly reduced from a performance curve measurement u. U. supplemented by a temperature measurement and humidity measurement (9 ) are closed, that at the rotor blades (1 ) Ice adhesion (2 ) has formed.
Weitere Verfahren wird es geben.There will be other methods.
Ziel der Erfindung:Object of the invention:
Ziel der Erfindung ist es, durch einen sehr preiswerten, dauerhaften und betriebssicheren Sensor rasch und zuverlässig auf eine Eisanhaftung (
Beschreibung der Erfindung:Description of the invention:
Durch Eisanhaftung (
Die Eisanhaftung (
Mit einem oder mehreren Mikrofonen (3) kann das Betriebsgeräusch der Rotorblätter (
Mit heutiger Computertechnik ist es leicht, mit der Meldung „Eis am Rotorblatt“ auch gleich die „Beweistonfolge“ an die Leitstelle zu senden, wo sich eine Person das Geräusch anhört und die Entscheidung des Computers bestätigt oder aufhebt.With today's computer technology, it is easy with the message "Ice on the rotor blade" to send the "proof sequence" to the control center, where a person sounds the noise and confirms or removes the decision of the computer.
Es ist sinnvoll, das System mit einer Temperaturmessung und Luftfeuchtemessung (
Das Mikrofon (3) bzw. die Mikrofone (3) können an geeigneter Stelle angebracht werden. Denkbar ist das Dach der Gondel (3A), der Turm etwa auf Höhe des unteren Blattdurchganges (3B), eine geeignete Stelle auf dem Erdboden (3C), die Vorderkante (3D) des Rotorblattes (
Wurde die Windenergieanlage (
Ist die Kamera (
Akustische Überwachung einer Windenergieanlage, um Eisanhaftung an den Rotorblättern zu erkennen.Acoustic monitoring of a wind turbine to detect ice adherence to the rotor blades.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Rotorblattrotor blade
- 22
- Eisanhaftungice adhesion
- 3a, 3b, 3c, 3d3a, 3b, 3c, 3d
- Mikrofon an geeigneter PositionMicrophone at a suitable position
- 44
- Auswertung, kurzfristige Änderung im BetriebsgeräuschEvaluation, short-term change in the operating noise
- 55
- Steuerung der WindenergieanlageControl of the wind energy plant
- 66
- WindenergieanlageWind turbine
- 77
- Funkmodulradio module
- 88th
- Fernüberwachung der WindenergieanlageRemote monitoring of the wind turbine
- 99
- Temperaturmessung und FeuchtemessungTemperature measurement and humidity measurement
- 1010
- Kameracamera
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017001357.8A DE102017001357A1 (en) | 2017-02-10 | 2017-02-10 | Acoustic monitoring of a wind turbine to detect ice adherence to the rotor blades. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017001357.8A DE102017001357A1 (en) | 2017-02-10 | 2017-02-10 | Acoustic monitoring of a wind turbine to detect ice adherence to the rotor blades. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102017001357A1 true DE102017001357A1 (en) | 2018-08-16 |
Family
ID=62982711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102017001357.8A Ceased DE102017001357A1 (en) | 2017-02-10 | 2017-02-10 | Acoustic monitoring of a wind turbine to detect ice adherence to the rotor blades. |
Country Status (1)
Country | Link |
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DE (1) | DE102017001357A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109505741A (en) * | 2018-12-20 | 2019-03-22 | 浙江大学 | A kind of wind-driven generator blade breakage detection method and device based on rectangular microphone array |
CN113513455A (en) * | 2021-05-08 | 2021-10-19 | 华能陕西定边电力有限公司 | Blade icing image recognition device of wind driven generator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005016524A1 (en) * | 2004-06-10 | 2005-12-29 | General Electric Company | Method and device for detecting rotor blade ice |
DE102006032387A1 (en) * | 2006-07-13 | 2008-01-24 | Repower Systems Ag | Wind turbine, has rotor blade with ice detection device having laser, where laser beam of laser runs within area of surface of component, and sensor provided in optical path of beam and detecting changes of physical characteristics of beam |
DE102011082249A1 (en) * | 2011-09-07 | 2013-03-07 | Repower Systems Se | Method and system for de-icing a wind turbine |
-
2017
- 2017-02-10 DE DE102017001357.8A patent/DE102017001357A1/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005016524A1 (en) * | 2004-06-10 | 2005-12-29 | General Electric Company | Method and device for detecting rotor blade ice |
DE102006032387A1 (en) * | 2006-07-13 | 2008-01-24 | Repower Systems Ag | Wind turbine, has rotor blade with ice detection device having laser, where laser beam of laser runs within area of surface of component, and sensor provided in optical path of beam and detecting changes of physical characteristics of beam |
DE102011082249A1 (en) * | 2011-09-07 | 2013-03-07 | Repower Systems Se | Method and system for de-icing a wind turbine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109505741A (en) * | 2018-12-20 | 2019-03-22 | 浙江大学 | A kind of wind-driven generator blade breakage detection method and device based on rectangular microphone array |
CN113513455A (en) * | 2021-05-08 | 2021-10-19 | 华能陕西定边电力有限公司 | Blade icing image recognition device of wind driven generator |
CN113513455B (en) * | 2021-05-08 | 2023-12-15 | 华能陕西定边电力有限公司 | Blade ice-covering image recognition device of wind driven generator |
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