CN103399169B - A kind of wind speed measuring device for wind energy conversion system - Google Patents
A kind of wind speed measuring device for wind energy conversion system Download PDFInfo
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- CN103399169B CN103399169B CN201310347737.6A CN201310347737A CN103399169B CN 103399169 B CN103399169 B CN 103399169B CN 201310347737 A CN201310347737 A CN 201310347737A CN 103399169 B CN103399169 B CN 103399169B
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Abstract
The present invention relates to wind speed measuring device, particularly relate to a kind of wind speed measuring device for wind energy conversion system.The invention provides a kind of wind speed measuring device for wind energy conversion system, comprise blade, described blade is provided with measuring wind speed mechanism, described measuring wind speed mechanism comprises inserted sheet, leverage and force snesor, described inserted sheet is connected with described blade by described leverage, and described force snesor is connected with described leverage.The invention has the beneficial effects as follows: aim at incoming flow wind direction by inserted sheet, receive the resistance that windage produces, the order of magnitude of the moment suffered by inserted sheet is less, be difficult to select suitable torque measuring device, inserted sheet is subject to by leverage the moment of resistance that windage resistance produces and is converted to power, recycling force snesor measures the size of power, calculates inserted sheet Moment to facilitate, realize measuring wind speed, cost is lower.
Description
Technical field
The present invention relates to wind speed measuring device, particularly relate to a kind of wind speed measuring device for wind energy conversion system.
Background technology
The size and Orientation of wind speed is difficult to Measurement accuracy, and for wind turbine system, wind speed information has very important reference value for the speed Control, the control of change oar, vibration damping control etc. of wind turbine system accurately.Wind has randomness, undulatory property feature, and on wind mill wind wheel face, same measurement point has inconsistency at the wind speed of different time points.The diameter of modern wind machine is comparatively large, and obviously, on the same time point wind wheel surfaces of revolution, the wind speed of each point does not also have homogeneity in the effect such as Wind Speed Shear, tower shadow effect.
This class of wind energy conversion system is possessed to the system of rotor structure feature, on rotor, certain resultant wind velocity suffered by point is synthesized by the linear velocity of the incoming flow wind speed of air and rotor, the change of incoming flow wind speed and wind speed round, the wind speed size of resultant wind not only can be made to change, and the wind direction of resultant wind also can change.
Current measuring wind speed technology mainly comprises several as follows:
1, based on the measurement mechanism of static air pressure and dynamic pressure principle: pitot tube (pitottube) is the more a kind of wind speed measuring device of the upper application of current Fixed Wing AirVehicle (as aircraft), and the static pressure that it utilizes wind flow to produce and dynamic pressure are measured wind speed.Pitot tube is when testing the speed, and head should aim at incoming flow wind.On wind machine oar leaf, certain any incoming flow wind wind direction is indefinite, which has limited the application of pitot tube.
2, based on the measurement mechanism of air cooling effect: the resistance variations produced when hot-wire anemometer (hot-wireanemometer) utilizes "on" position lower sensor to cool because of wind or thermal compensation effect change wind velocity signal into electric signal, have continuous current mode of operation and constant temperature mode of operation.The installation and maintenance cost of hot-wire anemometer is higher.
3, based on laser or the ultrasonic measurement mechanism propagating generation Doppler effect in moving air: laser is divided into two bundles by laser Doppler anemometer (LaserDoppleranemometers), wherein a branch ofly to propagate outward at anemoscope, utilize the Doppler effect of laser, can wind speed information be extrapolated.Its use cost is also higher.In addition the ultrasonic wind velocity indicator (ultrasonicanemometer) based on sound Doppler effect principle and follow-on acoustic resonance formula anemoscope (Acousticresonanceanemometer) is also had.
When for wind energy conversion system, mainly there is the problem of 2 aspects in existing wind speed measuring device:
The direction of the resultant wind velocity 1, suffered by wind machine oar leaf changes, pitot tube needs to aim at incoming flow wind direction accurately could test wind speed, how needs this class the wind speed measuring device aiming at incoming flow wind direction to be arranged on wind machine oar leaf to be the difficult problem that thorny.
2, the price of hot-wire anemometer, laser Doppler anemometer, ultrasonic wind velocity indicator, acoustic resonance anemoscope and maintenance cost higher.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of wind speed measuring device for wind energy conversion system.
The invention provides a kind of wind speed measuring device for wind energy conversion system, comprise blade, described blade is provided with measuring wind speed mechanism, described measuring wind speed mechanism comprises inserted sheet, leverage and force snesor, described inserted sheet is connected with described blade by described leverage, and described force snesor is connected with described leverage.
As a further improvement on the present invention, described leverage is connected with and adds electrothermal ice detachment apparati.
As a further improvement on the present invention, the height of described inserted sheet is 2% of the chord length of described blade, and the width of described inserted sheet is 0.5% of the chord length of described blade, and the thickness of described inserted sheet is 0.2% of the chord length of described blade.
As a further improvement on the present invention, the installation site of described inserted sheet is at 10% place of the chord length of described blade.
As a further improvement on the present invention, described measuring wind speed mechanism has two at least.
As a further improvement on the present invention, described measuring wind speed mechanism has two, and described inserted sheet is respectively top inserted sheet and bottom inserted sheet, and described top inserted sheet is arranged on the upper surface of described blade, and described bottom inserted sheet is arranged on the lower surface of described blade.
The invention has the beneficial effects as follows: pass through such scheme, incoming flow wind direction is aimed at by inserted sheet, receive the resistance that windage produces, the order of magnitude of the moment suffered by inserted sheet is less, is difficult to select suitable torque measuring device, inserted sheet is subject to the moment of resistance that windage resistance produces is converted to power by leverage, recycling force snesor measures the size of power, calculate inserted sheet Moment to facilitate, realize measuring wind speed, cost is lower.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of wind speed measuring device for wind energy conversion system of the present invention.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiment the present invention is further described.
Drawing reference numeral in Fig. 1 is: inserted sheet 1; Leverage 2; Force snesor 3; Add electrothermal ice detachment apparati 4; Blade 5.
As shown in Figure 1, a kind of wind speed measuring device for wind energy conversion system, comprise blade 5, described blade 5 is provided with measuring wind speed mechanism, described measuring wind speed mechanism comprises inserted sheet 1, leverage 2 and force snesor 3, described inserted sheet 1 is connected with described blade 5 by described leverage 2, and described force snesor 3 is connected with described leverage 2.
As shown in Figure 1, described leverage 2 is connected with and adds electrothermal ice detachment apparati 4, because inserted sheet 1 and leverage 2 are metal material, adds electrothermal ice detachment apparati 4 by installing at the fulcrum place of leverage 2, prevent inserted sheet 1 from freezing under cold conditions, in order to avoid affect measurement result.
As shown in Figure 1, the height of described inserted sheet 1 is 2% of the chord length of described blade 5, and the width of described inserted sheet 1 is 0.5% of the chord length of described blade 5, and the thickness of described inserted sheet 1 is 0.2% of the chord length of described blade 5.
As shown in Figure 1, the installation site of described inserted sheet 1 is at 10% place of the chord length of described blade 5.
As shown in Figure 1, described measuring wind speed mechanism has two at least.
As shown in Figure 1, described measuring wind speed mechanism has two, and described inserted sheet 1 is respectively top inserted sheet and bottom inserted sheet, and described top inserted sheet is arranged on the upper surface of described blade 5, and described bottom inserted sheet is arranged on the lower surface of described blade 5.
The principle of measuring wind of the present invention is:
The first step: utilize experimental technique to measure respectively under different resultant wind velocities, blade 5 angle of attack condition, 3 dimension grid charts of inserted sheet 1 Moment of upper and lower surface, recycling curved surface interpolation method obtains 3 dimension surface charts.
Second step: the power of inserted sheet 1 or the moment of measuring upper surface, measures the power suffered by inserted sheet 1 or the moment of lower surface, (wind speed-angle of attack) curve corresponding to the power drawing suffered by upper and lower surface inserted sheet 1 by query method.
3rd step: by the resultant wind velocity suffered by the intersection point determination blade 5 of the wind speed-angle of attack curve of upper and lower surface, utilize speed measuring device can in the hope of the angular velocity of rotation of blade (
), according to the installation site of inserted sheet 1 (
), can in the hope of local line's speed of rotor (
).Formula is utilized to obtain the local wind speed information of the incoming flow wind suffered by wind energy conversion system.
4th step: the local wind speed information obtained according to little inserted sheet, obtains the shear wind speed information in wind mill wind wheel face.
A kind of wind speed measuring device for wind energy conversion system provided by the invention, tool has the following advantages and beneficial effect:
1, structure of the present invention simple, strong robustness, installation and maintenance advantage of lower cost.
2, the present invention can with other measuring wind speed combine with technique on a large scale, as the verification measurement means of a kind of local wind speed information.
3, under certain algorithm, the present invention can be used for predicting turbulent flow etc., and then realizes controlling effective vibration damping of wind energy conversion system.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. the wind speed measuring device for wind energy conversion system, it is characterized in that: comprise blade, described blade is provided with measuring wind speed mechanism, described measuring wind speed mechanism comprises inserted sheet, leverage and force snesor, described inserted sheet is connected with described blade by described leverage, and described force snesor is connected with described leverage.
2. the wind speed measuring device for wind energy conversion system according to claim 1, is characterized in that: described leverage is connected with and adds electrothermal ice detachment apparati.
3. the wind speed measuring device for wind energy conversion system according to claim 1, it is characterized in that: the height of described inserted sheet is 2% of the chord length of described blade, the width of described inserted sheet is 0.5% of the chord length of described blade, and the thickness of described inserted sheet is 0.2% of the chord length of described blade.
4. the wind speed measuring device for wind energy conversion system according to claim 1, is characterized in that: the distance between the installation site of described inserted sheet and the terminal edge of described blade equals 10% of the chord length of described blade.
5. the wind speed measuring device for wind energy conversion system according to claim 1, is characterized in that: described measuring wind speed mechanism has two at least.
6. the wind speed measuring device for wind energy conversion system according to claim 1, it is characterized in that: described measuring wind speed mechanism has two, described inserted sheet is respectively top inserted sheet and bottom inserted sheet, described top inserted sheet is arranged on the upper surface of described blade, and described bottom inserted sheet is arranged on the lower surface of described blade.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310347737.6A CN103399169B (en) | 2013-08-09 | 2013-08-09 | A kind of wind speed measuring device for wind energy conversion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310347737.6A CN103399169B (en) | 2013-08-09 | 2013-08-09 | A kind of wind speed measuring device for wind energy conversion system |
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| Publication Number | Publication Date |
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| CN103399169A CN103399169A (en) | 2013-11-20 |
| CN103399169B true CN103399169B (en) | 2016-01-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044383A (en) * | 2015-06-30 | 2015-11-11 | 上海卓思智能科技有限公司 | Device and method for measuring wind speed |
| KR101678005B1 (en) * | 2015-08-28 | 2016-11-22 | 동국대학교 산학협력단 | An apparatus for measuring wind velocity |
| US9719820B1 (en) * | 2016-01-29 | 2017-08-01 | Goodrich Aerospace Services Private Limited | Hybrid material pitot tube |
| DE102016114051A1 (en) * | 2016-07-29 | 2018-02-01 | Wobben Properties Gmbh | Wind speed detection for a wind turbine |
| CN107121565A (en) * | 2017-04-18 | 2017-09-01 | 苏州格联威智能科技有限公司 | A kind of extraordinary wind speed tester |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509816A (en) * | 2009-03-30 | 2009-08-19 | 东南大学 | Force sensor and air measurement method thereof |
| CN201730738U (en) * | 2010-06-03 | 2011-02-02 | 沈阳瑞祥风能设备有限公司 | Propeller-changing sensor setting structure of wind driven generator |
| CN102298071A (en) * | 2011-05-20 | 2011-12-28 | 南京信息工程大学 | Device and method for measuring wind speed and wind direction |
| CN203455359U (en) * | 2013-08-09 | 2014-02-26 | 哈尔滨工业大学深圳研究生院 | Wind speed measuring device used for wind turbine |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509816A (en) * | 2009-03-30 | 2009-08-19 | 东南大学 | Force sensor and air measurement method thereof |
| CN201730738U (en) * | 2010-06-03 | 2011-02-02 | 沈阳瑞祥风能设备有限公司 | Propeller-changing sensor setting structure of wind driven generator |
| CN102298071A (en) * | 2011-05-20 | 2011-12-28 | 南京信息工程大学 | Device and method for measuring wind speed and wind direction |
| CN203455359U (en) * | 2013-08-09 | 2014-02-26 | 哈尔滨工业大学深圳研究生院 | Wind speed measuring device used for wind turbine |
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