CN111577542A - Noise control method, device, equipment and medium for wind turbine generator - Google Patents
Noise control method, device, equipment and medium for wind turbine generator Download PDFInfo
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- 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
- F03D7/00—Controlling wind motors
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- 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
- F05B2260/96—Preventing, counteracting or reducing vibration or noise
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- 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
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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
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Abstract
The invention discloses a noise control method of a wind turbine generator, which comprises the following steps: acquiring position information of a preset target area; calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model; judging whether the target noise is larger than a set noise threshold value or not; and if so, performing yaw operation or rotating speed reduction operation on the wind turbine generator. Therefore, the wind turbine generator is controlled to perform yaw operation or rotating speed reduction operation to reduce the noise influence on the target area, so that the target noise can be reduced without additionally arranging equipment for eliminating noise for the wind turbine generator, and the wind turbine generator is low in cost and high in efficiency; in addition, the noise reduction method is suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users. In addition, the noise control device, equipment and storage medium of the wind turbine generator set correspond to the method.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a noise control method, a noise control device, noise control equipment and a noise control medium for a wind turbine generator.
Background
Wind energy has the characteristics of being renewable, clean, abundant and the like, and becomes an important component of new energy, and a wind generating set is a main technical means for converting the wind energy into electric energy. With the rapid development of wind power technology, the whole wind power machine is gradually enlarged, the design capacity of the wind power unit is also continuously increased, and the noise caused by the wind power unit in the operation process is more and more serious. The noise problem of the wind turbine generator brings conflicts between a fan and the environment, between a wind field and local residences, and is concerned by more and more wind power practitioners.
In the prior art, in order to reduce the noise influence generated by the wind turbine generator, a hardware modification mode is mainly adopted for the wind turbine generator. The noise eliminating equipment is additionally arranged in the wind generating set, so that the noise emitted by the wind generating set is integrally reduced, and the noise requirement is met. For example, sound absorbing cotton is added to the wall of the fan, spoilers are added to the fan blades, and the noise level of the noise source is reduced to eliminate the noise influence as much as possible.
However, because the wind turbine generators are widely applied and the use amount is large, the installation of noise elimination equipment for each wind turbine generator generates higher cost and consumes long time; moreover, because the application environment and the use requirement of each wind turbine generator are different, even if the wind turbine generator is additionally provided with equipment for eliminating noise, the noise generated by the modified wind turbine generator in different application environments cannot meet the noise requirement. Therefore, the problem to be solved at present is to provide a noise control method capable of ensuring that the influence of noise generated by the wind turbine generator meets the noise requirement.
Disclosure of Invention
The invention aims to provide a noise control method, a device, equipment and a medium for a wind turbine generator, which can reduce the noise influence on a target area by controlling the wind turbine generator to carry out yaw operation or rotating speed reduction operation when a calculated target noise exceeds a noise threshold value, and meet the noise requirement of the target area. Therefore, the target noise can be reduced without additionally installing noise eliminating equipment for the wind turbine, and the method is low in cost and high in efficiency; in addition, the noise control method provided by the invention can be suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users.
In order to solve the technical problem, the invention provides a noise control method of a wind turbine generator, which comprises the following steps:
acquiring position information of a preset target area;
calculating target noise generated by the wind turbine generator in the target area according to the position information and the noise model;
judging whether the target noise is larger than a set noise threshold value or not;
and if so, carrying out yaw operation or rotation speed reduction operation on the wind turbine generator.
Preferably, the yaw operation or the rotation speed reduction operation of the wind turbine generator specifically includes:
acquiring the minimum yaw position of the wind turbine generator under a preset condition; the preset condition is that the noise generated by the wind turbine generator meets the noise requirement of the target area;
determining the current wind alignment position of the wind turbine generator, and taking the absolute value of the difference value between the current wind alignment position and the minimum yaw position as a target angle difference;
judging whether the target angle difference is smaller than a preset maximum wind aligning error angle of the wind turbine generator;
if so, executing the yawing operation on the wind turbine generator;
and if not, executing the rotation speed reduction operation on the wind turbine generator.
Preferably, after the rotating speed reduction operation is performed on the wind turbine generator, the method further includes:
acquiring the minimum running rotating speed of the wind turbine generator set under the condition of meeting the requirement of generating capacity;
determining the current running rotating speed of the wind turbine generator;
judging whether the current running rotating speed is greater than the minimum running rotating speed or not;
and if not, executing shutdown operation on the wind turbine generator.
Preferably, the noise model is specifically:
LA,α＝LW-20lgr0+DIα-8
wherein L isWRecording the A weighted sound power level, r, of the sound source radiation0Is the distance between the wind turbine and the target area, DIαIs the sound source directivity index.
Preferably, before calculating the target noise generated by the wind turbine generator in the target area, the method further comprises:
acquiring an actual noise value obtained by testing a noise sensor; the noise sensor is positioned at a testing position of the wind turbine generator;
calculating a theoretical noise value of the test position according to the noise model;
comparing the actual noise value with the theoretical noise value to determine a corrected value of the A weighted sound power level in the noise model;
and correcting the A weighting sound power level according to the correction value.
Preferably, before the modifying the a-token power level according to the modified value, the method further includes:
judging whether the correction value is larger than a preset correction step length;
and if so, correcting the A recording sound power level according to the correction value.
Preferably, the method further comprises the following steps:
judging whether an updating instruction for updating the position information of the target area is received;
and if so, updating the position information according to the updating instruction.
In order to solve the above technical problem, the present invention further provides a noise control device for a wind turbine, including:
the acquisition module is used for acquiring the position information of a preset target area;
the calculation module is used for calculating target noise generated by the wind turbine generator in the target area according to the position information and the noise model;
the judging module is used for judging whether the target noise is larger than a set noise threshold value or not; if yes, entering a control module;
and the control module is used for carrying out yaw operation or rotating speed reduction operation on the wind turbine generator.
In order to solve the above technical problem, the present invention further provides a noise control device for a wind turbine generator, including a memory for storing a computer program;
a processor for implementing the steps of the noise control method of a wind turbine generator set as described in any one of the above when executing the computer program.
In order to solve the technical problem, the present invention further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the noise control method for a wind turbine generator set according to any one of the above-mentioned embodiments are implemented.
The invention provides a noise control method of a wind turbine generator, which comprises the following steps: acquiring position information of a preset target area; calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model; judging whether the target noise is larger than a set noise threshold value or not; and if so, performing yaw operation or rotating speed reduction operation on the wind turbine generator. Therefore, when the calculated target noise exceeds the noise threshold value, the wind turbine generator can be controlled to perform yaw operation or rotating speed reduction operation so as to reduce the noise influence on the target area. Therefore, the target noise can be reduced without additionally installing noise eliminating equipment for the wind turbine, and the method is low in cost and high in efficiency; in addition, the noise control method provided by the invention can be suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users.
In addition, the noise control device, the equipment and the storage medium of the wind turbine generator set correspond to the method, and have the same beneficial effects.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a noise control method for a wind turbine generator according to an embodiment of the present invention;
fig. 2 is a structural diagram of a noise control device of a wind turbine generator according to an embodiment of the present invention;
fig. 3 is a structural diagram of a noise control device of a wind turbine generator according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
The core of the invention is to provide a noise control method, a device, equipment and a medium for a wind turbine generator, which can reduce the noise influence on a target area by controlling the wind turbine generator to carry out yaw operation or rotating speed reduction operation when the calculated target noise exceeds a noise threshold value, and meet the noise requirement of the target area. Therefore, the target noise can be reduced without additionally installing noise eliminating equipment for the wind turbine, and the method is low in cost and high in efficiency; in addition, the noise control method provided by the invention can be suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a flowchart of a noise control method for a wind turbine generator according to an embodiment of the present invention; as shown in fig. 1, a noise control method for a wind turbine generator provided in an embodiment of the present invention includes steps S101 to S104:
step S101: acquiring position information of a preset target area;
specifically, the preset target area is used for representing areas such as residential areas, office buildings and the like where noise control is needed, and a person skilled in the art can determine the area according to the actual application environment of the wind turbine generator. The position information of the target area specifically includes a distance between the target area and the wind turbine generator and an azimuth angle of the target area relative to the wind turbine generator. Those skilled in the art may also determine the content specifically included in the location information according to specific situations, and the embodiments of the present invention are not limited.
Step S102: calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model;
in one embodiment, the noise model is embodied as:
LA,α＝LW-20lgr0+DIα-8
wherein L isWRecording the A weighted sound power level, r, of the sound source radiation0Distance between wind turbine and target area, DIαIs the sound source directivity index.
Specifically, in practical application, different wind turbines have personalized differences, so that noise models of different wind turbines also have slight differences, and the differences are mainlyTo be embodied in LW. Therefore, the noise models of different wind turbines need to be corrected.
In one implementation, before calculating the target noise generated by the wind turbine in the target area, the method further includes:
acquiring an actual noise value obtained by testing a noise sensor; the noise sensor is positioned at the testing position of the wind turbine generator;
calculating a theoretical noise value of the test position according to the noise model;
comparing the actual noise value with the theoretical noise value to determine a corrected value of the A weighted sound power level in the noise model;
and correcting the A weighting sound power level according to the correction value.
Specifically, the noise sensor can be installed at a test position of the wind turbine generator, and an actual noise value at the test position obtained by testing the noise sensor is obtained. The theoretical noise value at the test location is calculated from the initial noise model. The actual noise value and the theoretical noise value are analyzed and compared to determine a corrected value of the weighted sound power level A in the initial noise model, and the initial noise model can be corrected according to the corrected value to obtain the noise model suitable for the current wind turbine generator. It should be noted that, in order to improve the accuracy of the determined correction value, the test position may be tested multiple times, and the average value of the data measured by the noise sensor each time is taken as the actual noise value. The technical personnel in the field can also determine a plurality of test positions according to the actual situation, and improve the accuracy of the correction value by a plurality of times of measurement.
Further, before the modifying the power level of the a-weighted sound according to the modified value, the method further includes:
judging whether the correction value is larger than a preset correction step length;
and if so, correcting the A recording sound power level according to the correction value.
Specifically, to prevent a large error in calculation, a correction step size may be set. When the single correction value is larger than the preset correction step length, the correction value is judged to be in error or abnormal, and the correction value needs to be determined again or the A weighted sound power level in the noise model needs to be corrected according to the preset correction step length; when the single correction value is less than or equal to the preset correction step length, the A weighted sound power level in the noise model can be corrected according to the correction step length.
In specific implementation, the target noise generated by the wind turbine generator in the target area can be calculated through the noise model according to the distance between the target area and the wind turbine generator in the position information.
Step S103: judging whether the target noise is larger than a set noise threshold value or not; if yes, go to step S104;
step S104: and carrying out yaw operation or rotation speed reduction operation on the wind turbine generator.
In one embodiment, the noise threshold is specifically the maximum acceptable noise value for the target area, and can be set by one skilled in the art according to the actual application. Comparing the calculated target noise with a noise threshold value, and judging whether the target noise is greater than the noise threshold value; if the noise is larger than the maximum value, the influence of the noise generated by the wind turbine generator in the target area exceeds the maximum acceptable noise value of the target area, and the noise generated by the wind turbine generator needs to be controlled; if the noise is smaller than or equal to the target area, the noise generated by the wind turbine generator in the target area is within an acceptable range of the target area, and noise control is not needed.
When the target noise is larger than the noise threshold value, the wind turbine generator can be subjected to yaw operation or rotating speed reduction operation. Through the yaw operation, the strength of the noise propagation process generated by the wind turbine generator can be weakened, so that the noise influence on the target area is reduced. Through the operation of reducing the rotating speed, the noise emitted by the wind turbine generator can be directly reduced, and the influence of the noise received by a target area is naturally reduced.
The invention provides a noise control method of a wind turbine generator, which comprises the following steps: acquiring position information of a preset target area; calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model; judging whether the target noise is larger than a set noise threshold value or not; and if so, performing yaw operation or rotating speed reduction operation on the wind turbine generator. Therefore, when the calculated target noise exceeds the noise threshold value, the wind turbine generator can be controlled to perform yaw operation or rotating speed reduction operation so as to reduce the noise influence on the target area. Therefore, the target noise can be reduced without additionally installing noise eliminating equipment for the wind turbine, and the method is low in cost and high in efficiency; in addition, the noise control method provided by the invention can be suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users.
In an embodiment, the noise control method for a wind turbine generator, provided by the invention, specifically includes:
acquiring the minimum yaw position of the wind turbine generator set under a preset condition; the preset condition is that noise generated by the wind turbine generator meets the noise requirement of a target area;
determining the current wind alignment position of the wind turbine generator, and taking the absolute value of the difference value between the current wind alignment position and the minimum yaw position as a target angle difference;
judging whether the target angle difference is smaller than a preset maximum wind aligning error angle of the wind turbine generator;
if so, performing yaw operation on the wind turbine generator;
and if not, executing the rotation speed reduction operation on the wind turbine generator.
Specifically, the operation of reducing the rotating speed will affect the power generation of the wind turbine; therefore, when controlling the noise influence generated by the wind turbine generator, whether the noise requirement of a target area can be met by adopting yaw operation can be considered firstly; if so, directly adopting yaw operation; if not, reduced speed operation is contemplated.
Specifically, the minimum yaw position of the wind turbine generator can be obtained when the noise generated by the wind turbine generator meets the noise requirement of a target area. Determining the current wind alignment position of the wind turbine generator; it should be noted that, in the operation process of the wind turbine, the wind turbine is all located at the wind facing position, so that the current yaw position of the wind turbine is the current wind facing position.
Understandably, if the noise requirement of a target area is to be met, the wind turbine generator needs to be controlled to deflect from the current wind alignment position to the minimum yaw position; in order to avoid the influence on the normal work of the wind turbine generator because the yaw angle exceeds the maximum wind error angle of the wind turbine generator. Calculating the absolute value of the difference value between the current wind alignment position and the minimum yaw position as a target angle difference, and judging whether the target angle difference is smaller than the maximum wind alignment error angle or not; if so, indicating that the normal work of the wind turbine generator is not influenced after the wind turbine generator is controlled to deflect, and executing corresponding yaw operation; if not, the influence of noise generated by the wind turbine generator cannot be reduced through yaw, and the rotating speed of the wind turbine generator needs to be reduced.
In an embodiment, the noise control method for a wind turbine generator according to an embodiment of the present invention further includes, after the reducing the rotation speed of the wind turbine generator, the following steps:
acquiring the minimum running rotating speed of the wind turbine generator set under the condition of meeting the requirement of generating capacity;
determining the current running rotating speed of the wind turbine generator;
judging whether the current running rotating speed is greater than the minimum running rotating speed or not;
and if not, executing shutdown operation on the wind turbine generator.
Specifically, the minimum running speed of the wind turbine generator set under the condition that the wind turbine generator set meets the requirement of the generated energy can be obtained. Judging whether the current running rotating speed of the wind turbine generator is greater than the minimum running rotating speed or not; if not, indicating that the generated energy of the current wind turbine generator cannot meet the requirement of the generated energy, and directly executing shutdown operation; the noise influence is ensured to meet the requirement, and meanwhile, the workload of the wind turbine generator is reduced.
In an embodiment, the noise control method for a wind turbine generator provided in the embodiment of the present invention further includes:
judging whether an updating instruction for updating the position information of the target area is received;
and if so, updating the position information according to the updating instruction.
Specifically, since the target area around the wind turbine may change, whether the position information of the target area needs to be refined may be determined according to whether an update instruction is received. When the updating instruction is received, the position information of the target area can be updated according to the content in the updating instruction, so that the accuracy in calculating the target noise of the target area is ensured, and the flexibility and the applicability of noise control on the wind turbine generator are increased.
The invention also provides an embodiment corresponding to the noise control device of the wind turbine generator and the noise control equipment of the wind turbine generator. It should be noted that the present invention describes the embodiments from two perspectives, one is based on the functional module, and the other is based on the hardware.
Fig. 2 is a structural diagram of a noise control device of a wind turbine generator according to an embodiment of the present invention; as shown in fig. 2, a noise control device for a wind turbine generator according to an embodiment of the present invention includes:
an obtaining module 10, configured to obtain position information of a preset target area;
the calculation module 11 is used for calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model;
the judging module 12 is used for judging whether the target noise is larger than a set noise threshold value; if yes, entering a control module;
and the control module 13 is used for performing yaw operation or rotating speed reduction operation on the wind turbine generator.
The noise control device for the wind turbine generator provided by the embodiment of the invention further comprises the following components after the wind turbine generator is subjected to the operation of reducing the rotating speed:
the shutdown module is used for acquiring the minimum running rotating speed of the wind turbine generator set under the condition of meeting the requirement of generating capacity; determining the current running rotating speed of the wind turbine generator; judging whether the current running rotating speed is greater than the minimum running rotating speed or not; and if not, executing shutdown operation on the wind turbine generator.
The noise control device for the wind turbine generator provided by the embodiment of the invention further comprises, before calculating the target noise generated by the wind turbine generator in the target area:
the correction module is used for acquiring an actual noise value obtained by testing the noise sensor; the noise sensor is positioned at the testing position of the wind turbine generator; calculating a theoretical noise value of the test position according to the noise model; comparing the actual noise value with the theoretical noise value to determine a corrected value of the A weighted sound power level in the noise model; and correcting the A weighting sound power level according to the correction value.
The noise control device for the wind turbine generator system provided by the embodiment of the invention further comprises, before correcting the A-weighted sound power level according to the correction value:
the judging module is used for judging whether the correction value is larger than a preset correction step length; and if so, correcting the A recording sound power level according to the correction value.
The noise control device of the wind turbine generator provided by the embodiment of the invention further comprises:
the updating module is used for judging whether an updating instruction for updating the position information of the target area is received or not; and if so, updating the position information according to the updating instruction.
Since the embodiments of this section correspond to the embodiments of the method section, reference is made to the description of the embodiments of the method section for the embodiments of this section, and details are not repeated here.
The invention provides a noise control device of a wind turbine generator, which comprises: acquiring position information of a preset target area; calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model; judging whether the target noise is larger than a set noise threshold value or not; and if so, performing yaw operation or rotating speed reduction operation on the wind turbine generator. Therefore, when the calculated target noise exceeds the noise threshold value, the wind turbine generator can be controlled to perform yaw operation or rotating speed reduction operation so as to reduce the noise influence on the target area. Therefore, the target noise can be reduced without additionally installing noise eliminating equipment for the wind turbine, and the method is low in cost and high in efficiency; in addition, the noise control method provided by the invention can be suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users.
Fig. 3 is a structural diagram of a noise control device of a wind turbine generator according to an embodiment of the present invention. As shown in fig. 3, the noise control apparatus for a wind turbine generator according to an embodiment of the present invention includes a memory 20 for storing a computer program;
a processor 21, configured to implement the steps of the noise control method of a wind turbine generator set as described in any one of the above when executing a computer program.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 21 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 21 may further include an AI (Artificial Intelligence) processor for processing a calculation operation related to machine learning.
The memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing the following computer program 201, wherein after being loaded and executed by the processor 21, the computer program can implement relevant steps in the noise control method for a wind turbine generator disclosed in any one of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, Windows, Unix, Linux, and the like.
In some embodiments, the noise control device of the wind turbine generator may further include an input/output interface 22, a communication interface 23, a power supply 24, and a communication bus 25.
It will be appreciated by those skilled in the art that the configuration shown in figure 3 does not constitute a limitation of the noise control device of the wind park and may comprise more or fewer components than those shown.
Since the embodiments of this section correspond to the embodiments of the method section, reference is made to the description of the embodiments of the method section for the embodiments of this section, and details are not repeated here. In some embodiments of the invention, the processor and memory may be connected by a bus or other means.
The noise control equipment of the wind turbine generator can realize the following method: acquiring position information of a preset target area; calculating target noise generated by the wind turbine generator in a target area according to the position information and the noise model; judging whether the target noise is larger than a set noise threshold value or not; and if so, performing yaw operation or rotating speed reduction operation on the wind turbine generator. Therefore, when the calculated target noise exceeds the noise threshold value, the wind turbine generator can be controlled to perform yaw operation or rotating speed reduction operation so as to reduce the noise influence on the target area. Therefore, the target noise can be reduced without additionally installing noise eliminating equipment for the wind turbine, and the method is low in cost and high in efficiency; in addition, the noise control method provided by the invention can be suitable for noise requirements under different environments, has good adaptability and flexibility, and can better meet the requirements of users.
Finally, the invention also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and performs all or part of the steps of the methods according to the embodiments of the present invention, or all or part of the technical solution. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The noise control method, device, equipment and medium of the wind turbine generator set provided by the invention are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A noise control method of a wind turbine generator is characterized by comprising the following steps:
acquiring position information of a preset target area;
calculating target noise generated by the wind turbine generator in the target area according to the position information and the noise model;
judging whether the target noise is larger than a set noise threshold value or not;
and if so, carrying out yaw operation or rotation speed reduction operation on the wind turbine generator.
2. The method for controlling the noise of the wind turbine generator according to claim 1, wherein the yaw operation or the rotation speed reduction operation of the wind turbine generator specifically comprises:
acquiring the minimum yaw position of the wind turbine generator under a preset condition; the preset condition is that the noise generated by the wind turbine generator meets the noise requirement of the target area;
determining the current wind alignment position of the wind turbine generator, and taking the absolute value of the difference value between the current wind alignment position and the minimum yaw position as a target angle difference;
judging whether the target angle difference is smaller than a preset maximum wind aligning error angle of the wind turbine generator;
if so, executing the yawing operation on the wind turbine generator;
and if not, executing the rotation speed reduction operation on the wind turbine generator.
3. The method of controlling noise of a wind turbine according to claim 2, further comprising, after the performing the derating operation on the wind turbine:
acquiring the minimum running rotating speed of the wind turbine generator set under the condition of meeting the requirement of generating capacity;
determining the current running rotating speed of the wind turbine generator;
judging whether the current running rotating speed is greater than the minimum running rotating speed or not;
and if not, executing shutdown operation on the wind turbine generator.
4. The noise control method of the wind turbine generator according to claim 1, wherein the noise model is specifically:
LA,α＝LW-20lgr0+DIα-8
wherein L isWRecording the A weighted sound power level, r, of the sound source radiation0Is the distance between the wind turbine and the target area, DIαIs the sound source directivity index.
5. The method for controlling the noise of the wind turbine generator according to claim 4, wherein before calculating the target noise generated by the wind turbine generator in the target area, the method further comprises:
acquiring an actual noise value obtained by testing a noise sensor; the noise sensor is positioned at a testing position of the wind turbine generator;
calculating a theoretical noise value of the test position according to the noise model;
comparing the actual noise value with the theoretical noise value to determine a corrected value of the A weighted sound power level in the noise model;
and correcting the A weighting sound power level according to the correction value.
6. The method for controlling the noise of the wind turbine generator according to claim 5, wherein before the modifying the A-weighted sound power level according to the modified value, the method further comprises:
judging whether the correction value is larger than a preset correction step length;
and if so, correcting the A recording sound power level according to the correction value.
7. The noise control method of a wind turbine generator according to claim 1, further comprising:
judging whether an updating instruction for updating the position information of the target area is received;
and if so, updating the position information according to the updating instruction.
8. A noise control device of a wind turbine generator system, comprising:
the acquisition module is used for acquiring the position information of a preset target area;
the calculation module is used for calculating target noise generated by the wind turbine generator in the target area according to the position information and the noise model;
the judging module is used for judging whether the target noise is larger than a set noise threshold value or not; if yes, entering a control module;
and the control module is used for carrying out yaw operation or rotating speed reduction operation on the wind turbine generator.
9. Noise control equipment of a wind turbine is characterized by comprising a memory, a noise control unit and a noise control unit, wherein the memory is used for storing a computer program;
processor for implementing the steps of the noise control method of a wind turbine as claimed in any of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the noise control method of a wind turbine generator as set forth in any one of claims 1 to 7.
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