CN101839216B - Intelligent blade of wind power generator with strain sensors - Google Patents
Intelligent blade of wind power generator with strain sensors Download PDFInfo
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- CN101839216B CN101839216B CN201010175171.XA CN201010175171A CN101839216B CN 101839216 B CN101839216 B CN 101839216B CN 201010175171 A CN201010175171 A CN 201010175171A CN 101839216 B CN101839216 B CN 101839216B
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- blade
- strain
- controller
- blade body
- intelligent
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- 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
Abstract
The invention relates to an intelligent blade of a wind power generator, in particular to an intelligent blade of a wind power generator with strain sensors. According to the technical scheme, the intelligent blade comprises a blade body, wherein the blade body is internally provided with the strain sensors correspondingly to the top part, the middle part and the root part thereof. The top part, the middle part and the root part in the blade body are provided with the strain sensors, so that the strain capacity of the corresponding parts of the blade body can be detected; and a blade changing mechanism is controlled by an intelligent blade controller and a main controller to change the blade, so that the wind power generator can capture the wind power to the maximum extent. Furthermore, under the action of the blade changing mechanism, the intelligent blade reduces the operating load, leads the blade body to be safe and reliable in operating, and effectively protects the blade body.
Description
Technical field
The present invention relates to a kind of blade of wind-driven generator, especially a kind of intelligent blade of wind driven generator with strain transducer.
Background technique
Wind-driven generator is that one utilizes pneumatic equipment blades made capturing wind energy, and is converted into mechanical energy, and then drives the energy machinery of electrical power generators.Wind-driven generator is generally arranged on the abundant area of wind energy resources, is operated in rugged environment, the impacts such as such as high/low temperature, typhoon, thunderbolt, dust storm and various corrosion.The blade diameter of wind-driven generator is large, blade each several part discontinuity, accelerates, slows down frequently, easily cause the damage of blade.
Because domestic wind power industry is started late, the manufacturing technology of wind power generating set is also immature, wind power generating set, in the operation phase, needs the service technician of specialty to carry out periodical repair, maintenance or fault treatment to ensure the reliable operation of wind power generating set to wind power generating set usually.Service technician needs under wind power generating set is in outage state, climbs and highly uses the collection of Handheld field test instrument to arrange the data of monitoring point at the wind power generator cabin of 40 ~ 80 meters, and overhaul according to this.Due to wind energy turbine set wind power generating set quantity and single wind generator group monitoring point more, cause service technician repeated labor and also because of maintenance cause shutdown also to bring the loss of generated energy to wind energy turbine set.Meanwhile, after the data capture of wind power generating set completes, also need to analyze image data in laboratory, be not easy to the real-time running state understanding wind power generating set.Meanwhile, in blade running, catch wind energy power in order to what increase blade, also need to carry out change oar and driftage effect according to the change of wind direction to blade in time.At present, for the insufficient sensitivity of flow direction vane determined the wind direction, thus cause blade not go off course as required in time and to become oar, cause generated energy and decline to some extent and bring corresponding economic loss.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of intelligent blade of wind driven generator with strain transducer, it can detect the running state of blade, is convenient to run blade control.
According to technological scheme provided by the invention, described in there is the intelligent blade of wind driven generator of strain transducer, comprise blade body; Correspond in described blade body in blade tip, leaf and blade root is equipped with strain transducer, described strain transducer detects the strain capacity that blade body produces, and described strain capacity is transferred to intelligent blade controller.
Described intelligent blade controller and blade pitch device are electrical connected.The input end of described controller is connected with collector, and controller gathers the strain capacity of the blade body that strain transducer detects by collector.Described collector receives the strain capacity that strain transducer detects blade body corresponding position, and by communication module, described strain capacity is transferred to master controller, and described master controller and intelligent blade controller are interconnected.Described master controller is electrically connected with blade pitch device.Described blade body is arranged on wheel hub by pitch variable bearings; Described wheel hub is arranged in wind power generating set by main shaft, and described wind power generating set is positioned on pylon.The sample frequency of described collector is 0.01 ~ 5Hz.Described strain transducer is outer subsides foil gauge, inner pre-buried foil gauge or pre-buried fiber optic strain sensor.
Advantage of the present invention: in the blade tip in blade body, leaf and blade root strain transducer is set, the strain capacity of blade body corresponding position can be detected by strain transducer; Described strain capacity is transferred to intelligent blade controller and master controller, and intelligent blade controller and master controller carry out change oar by controlling blade pitch device, enable wind-driven generator farthest catch wind energy; And blade body is under blade pitch device effect, can reduce running load, blade body is safe and reliable to operation, realizes the available protecting to blade body.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1: the present invention includes blade body 1, strain transducer 2, collector 3, blade pitch device 4, intelligent blade controller 5, communication module 6, master controller 7, wind power generating set 8, pylon 9, wheel hub 11 and pitch variable bearings 12.
As shown in Figure 1: in blade body 1 correspond to blade tip, in leaf and blade root strain transducer 2 is all set, described strain transducer 2 can detect the strain capacity of blade body 1 corresponding position under the effect of wind 10; Described strain transducer 2 is outer subsides foil gauge, inner pre-buried foil gauge or pre-buried fiber optic strain sensor.Described collector 3 gathers the strain capacity that strain transducer 2 detects, described strain capacity is directly transferred to intelligent blade controller 5 or is transferred to master controller 7 by communication module 6 by collector 3, described intelligent blade controller 5 is interconnected with master controller 7, by cooperatively interacting of master controller 7 and intelligent blade controller 5, the centralized control to blade body 1 and decentralized control can be realized.The sample frequency of described collector 3 is 0.01 ~ 5Hz.Described intelligent blade controller 5 is all connected with the input end of blade pitch device 4 with the output terminal of master controller 7, controls blade pitch device 4 and performs the action of change oar, realize the maximum seizure of blade body 1 pair of wind 10.
Described blade body 1 is arranged on wheel hub 11 by pitch variable bearings 12, and wheel hub 11 is arranged in wind power generating set 8 by main shaft; Described wind power generating set 8 is positioned on pylon 9.
As shown in Figure 1: during use, described strain transducer 2 detects blade body 1 under the effect of wind 10, the strain capacity that blade body 1 corresponding position produces.Described strain capacity is transferred to intelligent blade controller 5 or master controller 7 by described collector 3.By cooperatively interacting of intelligent blade controller 5 and master controller 7, can realize the centralized control to blade body 1 and decentralized control, it is convenient to control.Described master controller 7 and intelligent blade controller 5, according to corresponding strain capacity, are analyzed the mode of blade body 1 further, are obtained the working state that blade body 1 is present; When described master controller 7 or intelligent blade controller 5 obtain the working state of blade body 1, when at utmost can not catch wind energy, master controller 7 or the interior corresponding controling parameters of intelligent blade controller 5 meeting change control device, and according to the size and Orientation of current wind 10, determine the control algorithm controlling wind-driven generator, the change oar parameter of amendment blade pitch device 4, blade pitch device 4 is driven to carry out change oar, make blade body 1 at utmost can catch wind energy, and blade body 1 load can be reduced, guarantee blade body 1 safe operation.
The present invention detects by strain transducer 2 strain capacity that blade body 1 produces under current state, intelligent blade controller 5 or master controller 7 are according to the size and Orientation of the size of described strain capacity and wind 10, the operational modal of blade body 1 is analyzed, and then the parameter of amendment blade pitch device 4, the operation of adjustment blade body 1.The present invention can reduce the load of blade body 1, and guarantee the reliable of blade body 1, generated energy is many, and self-protection ability is strong, and structure is simple, safe and reliable.
Claims (1)
1. one kind has the intelligent blade of wind driven generator of strain transducer, comprise blade body (1), it is characterized in that: correspond in described blade body (1) in blade tip, leaf and blade root is equipped with strain transducer (2), described strain transducer (2) detects the strain capacity that blade body (1) produces, and described strain capacity is transferred to intelligent blade controller (5);
Described intelligent blade controller (5) and blade pitch device (4) are electrical connected;
The input end of described controller (5) is connected with collector (3), and controller (5) gathers the strain capacity of the blade body (1) that strain transducer (2) detects by collector (3);
Described collector (3) receives the strain capacity that strain transducer (2) detects blade body (1) corresponding position, and by communication module (6), described strain capacity being transferred to master controller (7), described master controller (7) and intelligent blade controller (5) are interconnected;
Described master controller (7) is electrically connected with blade pitch device (4);
Described blade body (1) is arranged on wheel hub (11) by pitch variable bearings (12); Described wheel hub (11) is arranged in wind power generating set (8) by main shaft, and described wind power generating set (8) is positioned on pylon (9);
The sample frequency of described collector (3) is 0.01 ~ 5Hz;
Described strain transducer (2) is outer subsides foil gauge, inner pre-buried foil gauge or pre-buried fiber optic strain sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175171.XA CN101839216B (en) | 2010-05-11 | 2010-05-11 | Intelligent blade of wind power generator with strain sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175171.XA CN101839216B (en) | 2010-05-11 | 2010-05-11 | Intelligent blade of wind power generator with strain sensors |
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| Publication Number | Publication Date |
|---|---|
| CN101839216A CN101839216A (en) | 2010-09-22 |
| CN101839216B true CN101839216B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010175171.XA Active CN101839216B (en) | 2010-05-11 | 2010-05-11 | Intelligent blade of wind power generator with strain sensors |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036692B (en) * | 2015-07-15 | 2019-11-08 | 成都阜特科技股份有限公司 | A kind of wind generator set blade icing measuring method |
| WO2017140316A1 (en) | 2016-02-16 | 2017-08-24 | Vestas Wind Systems A/S | Control system for a wind turbine comprising a blade controller for each blade of the wind turbine |
| CN105822508B (en) * | 2016-04-29 | 2018-04-13 | 安徽容知日新科技股份有限公司 | A kind of system for the blade deformation for monitoring wind power plant |
| CN106323542B (en) * | 2016-11-23 | 2019-03-22 | 重庆大学 | For measuring the device of wind-driven generator icing rear surface wind pressure |
| CN107044388B (en) * | 2016-12-19 | 2019-06-21 | 北京金风科创风电设备有限公司 | Health state monitoring system and monitoring method for blades of wind driven generator |
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
| CN107781118B (en) * | 2017-10-25 | 2019-11-05 | 西安锐益达风电技术有限公司 | Blade of wind-driven generator health status monitoring system based on multi-sensor information |
| CN109916293B (en) * | 2019-03-20 | 2020-08-04 | 中国航发湖南动力机械研究所 | Installation process of strain gauge |
| CN113027702B (en) * | 2021-03-22 | 2022-03-22 | 明阳智慧能源集团股份公司 | Wind turbine generator load reduction and tower clearance control method based on blade tip deformation |
| CN117595156A (en) * | 2024-01-16 | 2024-02-23 | 中国航发四川燃气涡轮研究院 | High-temperature strain gauge wiring method for rear-stage integral multi-stage disc mortise connection structure blade |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DK58998A (en) * | 1998-04-30 | 1999-10-31 | Lm Glasfiber As | Windmill |
| US7348683B2 (en) * | 2005-11-17 | 2008-03-25 | General Electric Company | Rotor for a wind energy turbine |
| US7360996B2 (en) * | 2005-12-07 | 2008-04-22 | General Electric Company | Wind blade assembly and method for damping load or strain |
| CN101636581B (en) * | 2007-02-19 | 2011-11-30 | 维斯塔斯风力系统有限公司 | Wind turbine blade with strain sensing means, wind turbine, block sensor unit and uses hereof |
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| CN101839216A (en) | 2010-09-22 |
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