EP3737858A1 - Estimation du jeu entre un mât et des fondations d'une éolienne - Google Patents
Estimation du jeu entre un mât et des fondations d'une éolienneInfo
- Publication number
- EP3737858A1 EP3737858A1 EP19700103.5A EP19700103A EP3737858A1 EP 3737858 A1 EP3737858 A1 EP 3737858A1 EP 19700103 A EP19700103 A EP 19700103A EP 3737858 A1 EP3737858 A1 EP 3737858A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wind turbine
- acceleration
- interval
- game
- value
- 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- Withdrawn
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 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
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
-
- 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
- F05B2250/00—Geometry
- F05B2250/40—Movement of component
-
- 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
- F05B2260/80—Diagnostics
-
- 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
- F05B2270/10—Purpose of the control system
- F05B2270/109—Purpose of the control system to prolong engine life
-
- 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
- F05B2270/40—Type of control system
- F05B2270/404—Type of control system active, predictive, or anticipative
-
- 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
- F05B2270/807—Accelerometers
-
- 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
-
- 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
- Y02E10/728—Onshore wind turbines
Definitions
- the invention relates to the operation and maintenance of wind farms, and in particular that of the detection of a failure of the mechanical link between the mast and the foundation of a wind turbine.
- a land wind turbine comprises, in a manner known per se, a mast, blades, a nacelle fixed on the mast and on which the blades are mounted in rotation, and means for converting the mechanical energy of the blades into electrical energy.
- the mast of the wind turbine rests on a base to which it is bound thanks to the foundations.
- the whole structure is subjected to very strong winds that take on the blades.
- the pressure exerted by the wind on the blades by actuating them is transmitted to the entire wind turbine and fatigue stresses the connection between the mast of the wind turbine and its foundation. This repeated solicitation leads to a weakening of the embedding connection and therefore the appearance of a game, with consequences on the safety of the installation.
- An object of the invention is therefore to propose a new method for monitoring in a simple and robust way the evolution of the game between a wind turbine and its foundations, which can also be implemented without necessarily requiring specific instrumentation.
- the invention proposes a method of monitoring a game between a mast and the foundations of a wind turbine comprising the following steps:
- each acceleration interval comprises a minimum acceleration value and a maximum acceleration value, the maximum acceleration being between the minimum value and the maximum value the associated acceleration interval
- the comparison step S6 comprises the following substeps:
- 562 determine a least squares line from the points thus defined
- 563 determine a slope of the least squares line
- the monitoring method further comprises, following the comparison step S6, a step of generating an alert when the evolution of the game exceeds the predetermined threshold.
- accelerations are acquired at the nacelle of the wind turbine.
- the value of the acceleration interval comprising the minimum value of this acceleration interval, the maximum value of this acceleration interval or an average of the minimum value and the maximum value.
- the invention also proposes a computer program comprising instructions adapted to the implementation of each of the steps of the method of monitoring a game between a mast and the foundations of a wind turbine described above. when said program is run on a computer.
- the invention proposes a device for estimating a clearance between a mast and the foundations of a wind turbine, comprising:
- At least one accelerometer designed to acquire maximum acceleration of the mast of the wind turbine during a measurement time interval
- the wind turbine further comprises a nacelle, the accelerometer being mounted in said nacelle.
- FIG. 1 schematically illustrates an exemplary embodiment of a wind turbine
- FIG. 2 is a flowchart showing steps of an exemplary method of monitoring a clearance between a mast and the foundations of a wind turbine according to the invention.
- FIG. 3 is a flowchart showing substeps of the exemplary method of tracking a clearance between a mast and the foundations of a wind turbine of FIG. 2.
- the wind turbine 1 comprises, in a manner known per se, a mast 2, blades, a nacelle 4 fixed on the mast 2 and on which the blades are mounted in rotation, and means for converting the mechanical energy 3 blades in electrical energy.
- the mast 2 of the terrestrial wind turbine 1 rests on a base to which it is linked thanks to the foundations.
- the wind turbine 1 further comprises an accelerometer 10 which is mounted in the nacelle 4.
- This accelerometer 10 is usually used to monitor the vibrations of the nacelle 4 and delivers and records for this purpose information on the acceleration of the nacelle 4 on predetermined time intervals.
- This information is stored in a database and comprise a set of statistical data, for a given time interval (of a duration of the order of a few minutes) and comprise for example: an average acceleration and its standard deviation over the given time interval, maximum accelerations and minimum on the given time interval, etc.
- the invention proposes to take advantage of this accelerometer 10 and the data it provides and records already-and-already, to monitor in addition the game 7 of the wind turbine 1 and the state of health of the link embedded between the wind turbine 1 and its foundation.
- the invention applies mutatis mutandis using any other accelerometer 10, and in particular by reporting another accelerometer 10 on the wind turbine 1 or using another accelerometer 10 already present on the wind turbine 1.
- This other accelerometer 10 can of course be mounted or on the nacelle 4, but also in or on the mast 2 of the wind turbine 1 or at the flush connection.
- the method comprises the following steps:
- each acceleration interval comprises a minimum acceleration value and a maximum acceleration value, the maximum acceleration being between the minimum value and the maximum value ,
- the maximum of the maximum acceleration of the nacelle 4 is affected by the presence of a game 7 at the foundation which modified the assembly formed by the foundation and the mast 2 in terms of horizontal displacement of the end of the mast 2 and the rigidity of the mast 2.
- the free end of the wind turbine 1 will take more time because of the increase in the distance to travel for a fixed speed (imposed, by the speed of the wind).
- the acceleration is a ratio between a speed and a time, it will decrease with the creation of a set 7 at the foot of a wind turbine 1, at the level of the embedding connection. It is therefore this phenomenon that the invention proposes to follow through the steps mentioned above.
- the steps S1 to S4 are repeated during a fixed time interval I, multiple of one year in order to take into account the seasonal effects.
- N maximum accelerations of the mast 2 of the wind turbine 1 are acquired.
- This acquisition can notably be carried out as part of the usual acquisitions of the accelerometer 10, by recording the maximum accelerations recorded over N time intervals.
- each of the N maximum accelerations thus acquired is associated with a predefined acceleration interval.
- the acceleration intervals each comprise a minimum acceleration value and a maximum acceleration value, and the maximum acceleration is associated with the acceleration interval whose minimum acceleration value is lower and the acceleration value maximum is greater.
- the acceleration intervals are disjoint and cover together all possible maximum acceleration values.
- the length of the acceleration intervals is furthermore identical.
- the acceleration intervals can be defined as follows: [0; 1] mm / s 2 ; ] 1; 2] mm / s 2 ; ] 2; 3] mm / s 2 ;
- step S3 the number of occurrences of each acceleration interval is determined for the N time slots. For example, the probability density of the acceleration intervals associated with the N maximum accelerations acquired during the N time intervals can be plotted.
- the mode is then deduced for these N time intervals, this mode corresponding to the value of the interval of accelerations whose number of occurrences is the greatest over the N time intervals.
- the interval of accelerations comprising an infinity of acceleration values, one can for example choose the minimum value, the maximum value or the average of the interval of accelerations whose number of occurrences is the largest as value of the fashion. This is however not limiting, any other value of the accelerating interval in question can be selected.
- the steps S1 to S4 are then repeated over N additional time intervals until the end date of the fixed time interval I (step S5).
- p modes are obtained during this fixed time interval I.
- the steps S1 to S4 are repeated at a given fixed frequency.
- the number of modes obtained can be adjusted by modifying the fixed given frequency, the number N of time intervals and the duration of said time intervals.
- step S6 the p modes thus obtained are then compared in order to deduce the evolution of the game.
- step S62 a least squares line is determined from the points thus defined as well as the slope of this line (step S63). Finally, the slope is compared with a predetermined threshold (step S64).
- step S7 If the slope reaches or exceeds the predetermined threshold, it is considered that the game 7 of the wind turbine 1 is important. If necessary, an alarm can be triggered (step S7).
- the device comprises, in addition to the accelerometer 10, which can be housed in the nacelle 4 of the wind turbine. or in any other part of it:
- the clock 11 and the dynamic analysis tool 12 can both be housed in the wind turbine 1, as illustrated in FIG. 3.
- the clock 11 and / or the dynamic analysis tool 12 can be placed at a distance from the wind turbine, in a dedicated housing, and connected by wired or wireless connection to the wind turbine 1.
Landscapes
- 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
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1850106A FR3076580B1 (fr) | 2018-01-08 | 2018-01-08 | Estimation du jeu entre un mat et des fondations d'une eolienne |
| PCT/EP2019/050246 WO2019134996A1 (fr) | 2018-01-08 | 2019-01-07 | Estimation du jeu entre un mât et des fondations d'une éolienne |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3737858A1 true EP3737858A1 (fr) | 2020-11-18 |
Family
ID=61802171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19700103.5A Withdrawn EP3737858A1 (fr) | 2018-01-08 | 2019-01-07 | Estimation du jeu entre un mât et des fondations d'une éolienne |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200378366A1 (fr) |
| EP (1) | EP3737858A1 (fr) |
| CA (1) | CA3088429C (fr) |
| FR (1) | FR3076580B1 (fr) |
| WO (1) | WO2019134996A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757051B (zh) * | 2021-09-26 | 2023-03-14 | 新疆金风科技股份有限公司 | 风力发电机组塔架净空监测方法、装置及其系统 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7822560B2 (en) * | 2004-12-23 | 2010-10-26 | General Electric Company | Methods and apparatuses for wind turbine fatigue load measurement and assessment |
| DE202010011085U1 (de) * | 2010-08-05 | 2010-11-11 | Bennert Ingenieurbau Gmbh | Vorrichtung zum Überwachen der Standfestigkeit von Windkraftanlagen |
| DE102011053317A1 (de) * | 2011-09-06 | 2013-03-07 | GL Garrad Hassan Deutschland GmbH | Verfahren zum Bestimmen der Neigung eines Turmes |
| JP6377464B2 (ja) * | 2013-09-04 | 2018-08-22 | Ntn株式会社 | 風力発電装置の状態監視装置 |
| US10697438B2 (en) * | 2016-06-09 | 2020-06-30 | Scada International A/S | System for detection of foundation movement in a wind turbine |
-
2018
- 2018-01-08 FR FR1850106A patent/FR3076580B1/fr active Active
-
2019
- 2019-01-07 EP EP19700103.5A patent/EP3737858A1/fr not_active Withdrawn
- 2019-01-07 WO PCT/EP2019/050246 patent/WO2019134996A1/fr not_active Ceased
- 2019-01-07 CA CA3088429A patent/CA3088429C/fr not_active Expired - Fee Related
- 2019-01-07 US US16/959,722 patent/US20200378366A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FR3076580B1 (fr) | 2020-01-17 |
| CA3088429C (fr) | 2021-09-07 |
| FR3076580A1 (fr) | 2019-07-12 |
| CA3088429A1 (fr) | 2019-07-11 |
| US20200378366A1 (en) | 2020-12-03 |
| WO2019134996A1 (fr) | 2019-07-11 |
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