CN202746093U - Noise control device of wind driven generator - Google Patents
Noise control device of wind driven generator Download PDFInfo
- Publication number
- CN202746093U CN202746093U CN2012203039851U CN201220303985U CN202746093U CN 202746093 U CN202746093 U CN 202746093U CN 2012203039851 U CN2012203039851 U CN 2012203039851U CN 201220303985 U CN201220303985 U CN 201220303985U CN 202746093 U CN202746093 U CN 202746093U
- Authority
- CN
- China
- Prior art keywords
- noise
- control device
- wind
- rotating speed
- power generating
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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 utility model discloses a noise control device of a wind driven generator, and relates to the field of wind driven power generation. The control device comprises a wind driven generator set, a noise detecting device and a control system, wherein the noise detecting device is arranged around the wind driven generator set and is used for detecting the noise of the wind driven generator set; the control system is connected between the noise detecting device and the wind driven generator set, and is used for controlling the noise of the wind driven generator set through comparing the noise value detected by the noise detecting device and the preset noise threshold and controlling the rotation speed of the wind driven generator. The utility model provides the establishment of communication between the wind driven generator set and a testing device, and through necessary treatment and analysis of noise data, the aim that the rotation speed of an impellor is adjusted so that the wind driven generator set meets the noise index under a special environment requirement is achieved.
Description
Technical field
The utility model relates to wind power generation field, relates in particular to a kind of noise control device of wind power generating set.
Background technique
In recent years, along with wind generating technology constantly improves, wind power generating set maximizes, single-machine capacity improves constantly becomes general trend.Pollute with water although wind-power electricity generation can alleviate air pollution, can not impact weather, because blower fan can produce larger noise in actual moving process, have a strong impact near the resident's of wind power plant normal life.So all the time, the noise of wind-powered electricity generation unit all is one of the important environmental problem that need to be investigated, also is simultaneously one of major criterion of examination wind-powered electricity generation unit overall performance quality.
For guaranteeing people's normal life and working environment, various countries have also all formulated the noise pollution that relevant regulation and standard limit wind energy turbine set or wind-driven generator with China.The noise detecting method standard of China's foundation mainly is GB/T 22516-2008 and IEC 61400-11.In addition, the noise level limit in wind energy turbine set when operation and method of measurement also can be with reference to DL/T 1084-2008, in this standard not only the diverse location to the wind field place carried out regional division, and stipulated simultaneously the different noise level limits at daytime, night in the zones of different.For these regulations and standard, effectively control the noise pollution of blower fan, reduce noise pollution to the restriction in wind-powered electricity generation industry development space, be wind-powered electricity generation industry problem demanding prompt solution.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of noise control device of wind power generating set, in order to effectively control the noise of wind power generating set output.
The noise control device of a kind of wind power generating set that the utility model solves the problems of the technologies described above comprises:
Wind power generating set;
Be arranged in the noise detection apparatus that wind power generating set is used for detecting its noise on every side;
Be connected to the control system between described noise detection apparatus and the described wind power generating set, described control system is according to the deviation signal of the noise detection apparatus noise figure that detects and the noise threshold that presets, and control wind power generating set rotating speed is controlled the noise of wind power generating set.
Preferably, described control system comprises:
Be used for presetting the noise threshold module of noise floor value;
The subtractor that connects respectively described noise threshold module and described noise detection apparatus;
The amplifilter that connects described subtractor; And
Be connected to the revolution speed control device between the generator of described amplifilter and generator set.
Preferably, described revolution speed control device comprises:
Connect described amplifilter and be used for noise is converted to the rotating speed conversion module of rotating speed; And
Connect described rotating speed conversion module and be used for controlling according to the rotating speed of conversion the controller of described generator speed and then control wheel speed.
Preferably, described rotating speed conversion module is pressed following two formula to calculating blowing machine wheel speeds:
L
WA＝50(log
10?V)+10(log
10?D)-4，
Wherein, L
WABe the noise figure that detects, unit is decibel; V is the tip speed of draught fan impeller, and unit is metre per second (m/s); D is the draught fan impeller diameter, and unit is rice; N is the draught fan impeller rotating speed, and unit is a minute revolution.
Preferably, described controller is the PLC of blower fan inside.
Preferably, described noise detection apparatus has a plurality of sound level meters.
Preferably, described a plurality of sound level meter is installed in respectively on a plurality of test positions on every side of wind-driven generator tower frame.
Preferably, each test position is equipped with the sound level meter fixing device.
Preferably, described sound level meter fixing device comprises:
The mounting plate of described sound level meter is installed on it;
Be fixed on the described mounting plate wind shield for the protection of described sound level meter.
Preferably, described wind shield comprises:
The hemispheric main wind shield of hollow; With
Be arranged on the hemispheric auxiliary wind shield of hollow outside the main wind shield.
With respect to prior art, technique effect of the present utility model is, effectively controls the noise pollution of blower fan, reduces noise pollution to the restriction in wind-powered electricity generation industry development space.
Below in conjunction with accompanying drawing structure of the present utility model and principle are elaborated.
Description of drawings
Fig. 1 is the noise control device structural drawing of a kind of wind power generating set of the utility model;
Fig. 2 A is the control principle drawing of the noise control device of a kind of wind power generating set of the utility model;
Fig. 2 B is the control principle drawing of Fig. 2 A medium velocity control gear;
Fig. 3 is four test position layout charts of a kind of wind power generating set noise control of the utility model;
Fig. 4 is a plurality of test position layout charts of a kind of wind power generating set noise control of the utility model;
Fig. 5 is a kind of wind power generating set noise control of the utility model benchmark test location layout figure;
Fig. 6 is the structural representation of the noise data measurement and control system of a kind of wind power generating set of the utility model;
Fig. 7 is the program flow diagram of the noise data measurement and control system of a kind of wind power generating set of the utility model.
Embodiment
Fig. 1 has shown the structure of the noise control device of a kind of wind power generating set of the utility model, comprising:
Wind power generating set, be arranged in the noise detection apparatus that wind power generating set is used for detecting its noise on every side, and be connected to control system between described noise detection apparatus and the described wind power generating set, this control system is according to the deviation signal Δ L of the noise detection apparatus noise figure that detects and the noise threshold that presets, and control wind power generating set rotating speed is controlled the noise of wind power generating set.
The aerodynamic noise that blower fan produces in running is interacted by blade and air and produces, and the increase of wind speed can make the wheel speed of blower fan constantly increase, thereby constantly strengthens the interaction between blade and air.The noise size that blower fan sends changes along with this interactional variation.The present invention has realized the control to wind-powered electricity generation noise that unit sends by adjusting the rotational speed of impeller.
Fig. 2 has shown an embodiment of the utility model control system, comprising: the noise threshold module that is used for presetting noise floor value; Connect respectively described noise threshold module and the subtractor with noise detection apparatus of a plurality of sound level meters, be used for obtaining the difference Δ L (being deviation signal) of detection noise value L2 and noise threshold L1; The amplifilter that connects described subtractor is used for deviation signal Δ L is carried out amplification filtering; And be connected to revolution speed control device between the generator of described amplifilter and generator set.
Wherein, described revolution speed control device comprises: connect described amplifilter and be used for noise is converted to the rotating speed conversion module of rotating speed; And the controller that connects described rotating speed conversion module, being used for controlling described generator speed and then control wheel speed according to the rotating speed of conversion, its controller can be the PLC of blower fan inside.
According to the residing surrounding environment of wind energy turbine set and local relevant regulations, need to before testing, preset the noise signal value in the control system inside to the wind-powered electricity generation unit.Sound level meter can be transported to measured data in the control system of blower fan when operating blower fan is carried out Real-Time Monitoring simultaneously, relatively surveys noise signal and preset signals threshold value, obtains noise little deviation signal.Because the signal that sends is comparatively faint, be enough to be for further processing so this small-signal need to be amplified to.In addition since in the signal that collects except the noise data that target signal-blower fan sends is arranged, also can exist many with measure irrelevant signal and by the irrelevant signal of sneaking into through other processing procedures such as transmission, amplification.For avoiding the impact of this part signal, need to filter the mixed signal after amplifying, purpose is the decay irrelevant signal, and the noise signal of blower fan is separated from mixed signal.
The utility model utilize amplifilter shown in Figure 2 to deviation signal amplify, filtering, again it is sent in the blower fan internal PLC, PLC sets up the tip speed of impeller and the relation between the blower fan sound power level by following empirical correlation:
L
WA＝50(log
10?V)+10(log
10?D)-4
Wherein, L
WABe the sound power level under the A weighting network, unit is decibel (dB); V is the tip speed of draught fan impeller, and unit is metre per second (m/s) (m/s); D is the draught fan impeller diameter, and unit is rice (m).Above-mentioned A weighting network refers to simulation people ear to the frequency characteristic of the following occupational noise of 55dB.In addition, there is following relation between tip speed and the wheel speed:
Wherein, ω is the angular velocity that draught fan impeller rotates, and unit is rad/s; N is the rotational velocity of draught fan impeller, and unit is a minute revolution (rpm).Owing to there being above two relations, can indirectly obtain the relation between blower fan sound power level and the wheel speed, further the conversion of noise signal data is the tach signal data.After having carried out the signal data conversion, PLC can send into generator by the tach signal that conversion is good, and the control generator continues operation with the rotating speed after upgrading.Under the drive of generator, impeller also begins to rotate with new rotating speed.But because the impact of wind regime, impeller its rotating speed after rotating a period of time under this rotating speed can change.At this moment, sound level meter can compare noise data and the predefined value that records again, thereby realizes the continuous control to the draught fan impeller rotating speed.Therefore whole control system of the present utility model is closed-loop system.
Because there are the proportionate relationship of determining in the rotating speed of generator and wheel speed, therefore can extrapolate engine speed from the rotating speed of draught fan impeller according to this proportionate relationship.
Fig. 3 to Fig. 5 has shown respectively four test position layouts, a plurality of test position layout chart and the benchmark test location layout of wind power generating set noise control of the present utility model.According to GB/T 22516-2008 and IEC 61400-11, can carry out noise testing to operating wind-powered electricity generation unit, use sound level meter to collect noise data.Above-mentioned sound level meter refers to the electronic instrument that generally is used for noise testing.Because the utility model is intended to control the noise pollution that the wind-powered electricity generation unit sends specified position, so the method for actual measurement noise can be with reference to GB/T 22516-2008 and IEC 61400-11, but be not limited to this specifications of surveys.Such as Fig. 3～shown in Figure 5, round the wind-driven generator tower frame vertical centre, sound level meter can be placed on 1 reference position and a plurality of alternate location is measured, near definition noise-sensitive zone (edge, residential belt) and wind-powered electricity generation unit apart from minimum and easily measuring position (A) affected by noise be the reference position, this reference position is R apart from the horizontal equivalent of horizontal axis wind-driven generator pylon vertical centre
0R
0Value mainly be to be determined by the actual landform environment between wind-powered electricity generation unit and the noise-sensitive zone.Compared to the reference position, other alternate location (B, C, D ...) distant apart from the wind-powered electricity generation unit, but also belong to the noise-sensitive zone.The placement location of sound level meter can have Fig. 3～three kinds of modes shown in Figure 5: 1. can be with reference to GB/T 22516-2008 and IEC 61400-11, choose 1 reference position and 3 alternate location are carried out noise testing; If 2. more noise-sensitive zone is arranged around the blower fan, can in the light of actual conditions test at a plurality of sound level meters of blower fan placed around; If 3. only have a noise-sensitive zone around the blower fan, and other positions are lower to noise requirements, can with this sensitizing range as the reference position, test.
Fig. 6 has shown for the structural representation of the noise data measurement and control system of a kind of wind power generating set of the utility model, as shown in Figure 6, having comprised: control system; Be installed in wind-driven generator tower frame around a plurality of test positions on sound level meter; The mounting plate of sound level meter is installed on it; Be fixed on the mounting plate wind shield for the protection of sound level meter.
Wherein, wind shield is divided into the hemispheric main wind shield of hollow and the hemispheric auxiliary wind shield of hollow that is arranged on outside the main wind shield.
Horizontal positioned hard mounting plate lies in a horizontal plane in the mounting plate central position with sound level meter on the nominative testing position, and with sound level meter orientation of its axis wind power generating set.Above-mentioned hard mounting plate refers to the round woody plectane that diameter is not less than 1m.Because sound level meter has Directivity, namely sound level meter is to the sensitivity of different direction sound, so need to be with the orientation of its axis wind power generating set of sound level meter.Afterwards, main wind shield and auxiliary wind shield are installed respectively from the inside to the outside successively, in order to protect sound level meter.Above-mentioned main wind shield refers to the hollow hemisphere cover body that diameter is not less than 10cm (preferred 10cm), chooses the relatively poor material of soundproof effect; Auxiliary wind shield refers to the hollow hemisphere cover body that diameter is not less than 50cm (preferred 50cm), chooses the relatively poor material of soundproof effect.In the noise data, noise data can be transferred in the control system of wind power generating set simultaneously by the communication signal line when the operation of record wind-driven generator.Control the size of wheel speed by PLC program in the system, make impeller can under normal mode and these two kinds of mode of operations of noise reduction mode, mutually switch to realize the control to blower fan output noise value.Above-mentioned normal mode, when referring to fan operation, impeller rotates with rated speed; Noise reduction mode, when referring to fan operation, the rotational speed of impeller is lower than rated speed.
Fig. 7 has shown the program flow diagram of noise control system of the present utility model.Below by two embodiments working procedure of the present utility model is described in detail.
Embodiment one
In the situation of night or section strict control of the noise that need to send blower fan in limited time on daytime, by noise reduction mode noise threshold L1 is set, make it enough near this noise region limit value, the noise data L2 that is therefore collected by sound level meter and the deviate Δ L=L2-L1 of noise threshold (being predefined value) L1 are greater than zero.
That is to say, when the condition of Δ L＞0 is set up, illustrate that the data that actual acquisition arrives are larger, exceeded predefined numerical value.At this moment, for satisfying the requirement of limit noise, control system need to enter noise reduction mode.By signal amplification circuit and eliminator deviate Δ L is carried out necessary signal processing, purpose is to amplify the small-signal that is gathered by microphone, and useful signal separated from various irrelevant signals, reduce the impact by testing apparatus, various processing circuit and environmental factor.Treated signal can carry out according to above-mentioned formula the conversion of noise data and wheel speed, and Δ L conversion is tachometer value Δ n.Can be in control program at the beginning of the running of wind generating set take the rated speed N of impeller as initial speed, order N=N-Δ n is set simultaneously, and control system will be constantly subtracted each other the Δ n that satisfies condition and rotational speed N and is obtained the rotating speed of draught fan impeller under noise reduction mode afterwards.At this moment, can be by the actual speed of control generator speed and then control wind-powered electricity generation unit.
Because the wind-powered electricity generation unit is under the noise reduction operating mode, constantly wheel speed is adjusted, so the impeller of blower fan is always moving with the rotating speed that is lower than rated speed N.At this moment, the noise signal that microphone collects can be lower than does not adjust the noise signal that gathers in the wheel speed situation, and these data can constantly transfer in the blower fan control system by the communication of setting up between microphone and the blower fan control system, deviate Δ L is judged and processes, realized the wind-powered electricity generation unit is sent the control of noise.
Embodiment two
When the wind energy turbine set surrounding environment is not made strict criteria of noise control, noise threshold L1 is pressed normal mode setting (its value is greater than the value of noise reduction mode), thereby obtain the result of Δ L＜0, show that noise data that actual acquisition arrives less than predefined NF, belongs within the noise level limit scope.This moment, the wind-powered electricity generation unit can continue to move under normal operation mode with rated speed N.PLC is according to the result of Δ L＜0, and control program arranges normal operation mode endurance t so that the wind-powered electricity generation unit keeps operation at t in the time, the rotational speed that allows draught fan impeller at this moment between section have among a small circle and float, draught fan impeller is not done any action.After the t time finished, impeller moved with actual speed, and the sound level meter needs gather the noise of wind-powered electricity generation unit again, turn back to afterwards the first step of whole program.Restart noise predefined value L1 and noise measured value L2 are compared and judge continue to select the wind-powered electricity generation unit to move under what pattern.
If when needing by day or not noise strictly controlled, also can make the wind-powered electricity generation unit be under the normal mode and move, not force the operating mode of blower fan is selected always.At this moment, can normally gather the noise data in the microphone, the noise that the wind-powered electricity generation unit is sent carries out conventional test activity.
Although above the utility model is had been described in detail, the utility model is not limited to this, and those skilled in the art of the present technique can carry out various modifications according to principle of the present utility model.Therefore, all modifications of doing according to the utility model principle all should be understood to fall into protection domain of the present utility model.
Claims (10)
1. the noise control device of a wind power generating set is characterized in that, comprising:
Wind power generating set;
Be arranged in the noise detection apparatus that wind power generating set is used for detecting its noise on every side;
Be connected to the control system between described noise detection apparatus and the described wind power generating set, described control system is according to the deviation signal of the noise detection apparatus noise figure that detects and the noise threshold that presets, and control wind power generating set rotating speed is controlled the noise of wind power generating set.
2. noise control device according to claim 1 is characterized in that, described control system comprises:
Be used for presetting the noise threshold module of noise floor value;
The subtractor that connects respectively described noise threshold module and described noise detection apparatus;
The amplifilter that connects described subtractor; And
Be connected to the revolution speed control device between the generator of described amplifilter and generator set.
3. noise control device according to claim 2 is characterized in that, described revolution speed control device comprises:
Connect described amplifilter and be used for noise is converted to the rotating speed conversion module of rotating speed; And
The controller that connects described rotating speed conversion module is used for controlling described generator speed and then control draught fan impeller rotating speed according to the rotating speed of conversion.
4. noise control device according to claim 3 is characterized in that, described rotating speed conversion module is pressed following two formula to calculating blowing machine wheel speeds:
L
WA＝50(log
10?V)+10(log
10?D)-4，
Wherein, L
WABe the noise figure that detects, unit is decibel; V is the tip speed of draught fan impeller, and unit is metre per second (m/s); D is the draught fan impeller diameter, and unit is rice; N is the draught fan impeller rotating speed, and unit is a minute revolution.
5. noise control device according to claim 3 is characterized in that, described controller is the PLC of blower fan inside.
6. noise control device according to claim 2 is characterized in that, it has a plurality of sound level meters described noise detection apparatus.
7. noise control device according to claim 6 is characterized in that, described a plurality of sound level meters are installed in respectively on a plurality of test positions on every side of wind-driven generator tower frame.
8. noise control device according to claim 7 is characterized in that, each test position is equipped with the sound level meter fixing device.
9. noise control device according to claim 8 is characterized in that, described sound level meter fixing device comprises:
The mounting plate of described sound level meter is installed on it;
Be fixed on the described mounting plate wind shield for the protection of described sound level meter.
10. noise control device according to claim 9 is characterized in that, described wind shield comprises:
The hemispheric main wind shield of hollow; With
Be arranged on the hemispheric auxiliary wind shield of hollow outside the main wind shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203039851U CN202746093U (en) | 2012-06-26 | 2012-06-26 | Noise control device of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203039851U CN202746093U (en) | 2012-06-26 | 2012-06-26 | Noise control device of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746093U true CN202746093U (en) | 2013-02-20 |
Family
ID=47705497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203039851U Expired - Fee Related CN202746093U (en) | 2012-06-26 | 2012-06-26 | Noise control device of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746093U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633917A (en) * | 2013-12-11 | 2014-03-12 | 陈卫兵 | Method and device for reducing vibration noise of motor |
| US9347432B2 (en) | 2014-07-31 | 2016-05-24 | General Electric Company | System and method for enhanced operation of wind parks |
| CN106370292A (en) * | 2016-08-25 | 2017-02-01 | 安徽凯达能源科技有限公司 | Wind energy power generating component's noise detection case |
| CN107238314A (en) * | 2017-05-31 | 2017-10-10 | 四川省阳子森环保设备有限公司 | A kind of cooling tower noise controller |
| CN107749295A (en) * | 2017-10-17 | 2018-03-02 | 张博强 | Wind power generating set Noise Active noise control method and active noise control system |
| CN109100010A (en) * | 2018-07-12 | 2018-12-28 | 星络科技有限公司 | community noise control method, device, terminal and computer readable storage medium |
| CN109779851A (en) * | 2019-02-19 | 2019-05-21 | 浙江大学 | A kind of wind power generating set acoustic power level measuring device and method |
| CN110139980A (en) * | 2016-12-16 | 2019-08-16 | 乌本产权有限公司 | For running the method for wind energy plant and the corresponding wind energy plant of device and the generator for generating electrical power with rotor and via rotor driving for opened loop control and/or closed-loop control wind energy plant |
-
2012
- 2012-06-26 CN CN2012203039851U patent/CN202746093U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633917A (en) * | 2013-12-11 | 2014-03-12 | 陈卫兵 | Method and device for reducing vibration noise of motor |
| CN103633917B (en) * | 2013-12-11 | 2016-07-06 | 陈卫兵 | A kind of method and apparatus reducing vibration noise of motor |
| US9347432B2 (en) | 2014-07-31 | 2016-05-24 | General Electric Company | System and method for enhanced operation of wind parks |
| CN106370292A (en) * | 2016-08-25 | 2017-02-01 | 安徽凯达能源科技有限公司 | Wind energy power generating component's noise detection case |
| CN110139980A (en) * | 2016-12-16 | 2019-08-16 | 乌本产权有限公司 | For running the method for wind energy plant and the corresponding wind energy plant of device and the generator for generating electrical power with rotor and via rotor driving for opened loop control and/or closed-loop control wind energy plant |
| CN110139980B (en) * | 2016-12-16 | 2021-12-10 | 乌本产权有限公司 | Method for operating a wind turbine, device for controlling a wind turbine and corresponding wind turbine |
| CN107238314A (en) * | 2017-05-31 | 2017-10-10 | 四川省阳子森环保设备有限公司 | A kind of cooling tower noise controller |
| CN107238314B (en) * | 2017-05-31 | 2021-05-25 | 中冷智元环境技术(安徽)有限责任公司 | Cooling tower noise control device |
| CN107749295A (en) * | 2017-10-17 | 2018-03-02 | 张博强 | Wind power generating set Noise Active noise control method and active noise control system |
| CN109100010A (en) * | 2018-07-12 | 2018-12-28 | 星络科技有限公司 | community noise control method, device, terminal and computer readable storage medium |
| CN109779851A (en) * | 2019-02-19 | 2019-05-21 | 浙江大学 | A kind of wind power generating set acoustic power level measuring device and method |
| CN109779851B (en) * | 2019-02-19 | 2020-06-19 | 浙江大学 | Device and method for measuring sound power level of wind generating set |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202746093U (en) | Noise control device of wind driven generator | |
| CN102197218B (en) | Control of wind park noise emission | |
| US8287228B2 (en) | System and methods for controlling the amplitude modulation of noise generated by wind turbines | |
| CN202974425U (en) | Wind turbine generator noise testing system | |
| US7896613B2 (en) | System and method for wind turbine noise control and damage detection | |
| US8232663B2 (en) | Controlling noise generated by wind turbines in a wind farm by de-synchronization of wind turbine rotors | |
| DK1192355T4 (en) | Wind energy system with noise control | |
| CN108506172B (en) | Online detection system for health state of wind power generation blade | |
| CN101476538A (en) | Individual blade noise measurement system and method for wind turbines | |
| US20070031237A1 (en) | Method and apparatus for producing wind energy with reduced wind turbine noise | |
| CN104515677A (en) | Failure diagnosing and condition monitoring system for blades of wind generating sets | |
| EP3077668A1 (en) | System and method for assessing the performance impact of wind turbine upgrades | |
| CN104101652B (en) | Audio signal based wind power blade damage monitoring method and system | |
| US20130164135A1 (en) | Active Noise Suppression on a Wind Turbine | |
| CN115186861A (en) | Wind power plant dynamic sector management optimization method and system based on digital twinning | |
| CN202547923U (en) | Vibration detecting device for pitch-variable bearing of wind turbine generator system | |
| JP5191423B2 (en) | Noise reduction system for windmill | |
| CN207960833U (en) | A kind of low pneumatic noise Wind turbines | |
| CN206945730U (en) | Air velocity transducer | |
| CN108266313A (en) | A kind of low pneumatic noise Wind turbines | |
| Kłaczyński et al. | Acoustic study of REpower MM92 wind turbines during exploitation | |
| CN207960838U (en) | It is a kind of can noise reducing wind electricity blade | |
| KR20130073410A (en) | Noise monitoring and control system on wind farm using noise map | |
| CN219776889U (en) | Wind power plant fan | |
| CN214836884U (en) | Device for measuring power characteristics of offshore wind turbine generator system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20130626 |