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CN-122021419-A - Wind generating set noise correlation model building method, device, equipment and medium

CN122021419ACN 122021419 ACN122021419 ACN 122021419ACN-122021419-A

Abstract

The embodiment of the application provides a method, a device, equipment and a medium for establishing a noise association model of a wind generating set, and relates to the technical field of wind power generation. The method comprises the steps of establishing a site noise attenuation model, separating noise contributions of blades in a wind generating set and a cabin based on complete machine noise tests in at least two different acoustic states, calculating cabin integral external radiation noise based on the noise contributions of the cabin, the test of at least one noise source component in the set and the test of the acoustic characteristics of the cabin structure, integrating the site noise attenuation model, the noise contributions of the blades and the cabin integral external radiation noise, and establishing a correlation model. The method effectively solves the problems that the noise source of the wind generating set is difficult to identify and the effective noise reduction treatment is difficult to carry out due to the lack of a quantitative model related to the whole noise of the components in the wind generating set in the related technology.

Inventors

  • CHEN SIMIN
  • JIANG SHENG
  • CHEN XU

Assignees

  • 三一重能股份有限公司

Dates

Publication Date
20260512
Application Date
20260116

Claims (10)

  1. 1. A method for establishing a noise association model of a wind generating set is characterized by comprising the following steps: establishing a site noise attenuation model, wherein the site noise attenuation model is used for representing noise attenuation from a wind generating set to a designated receiving position; Separating noise contributions of the blades in the wind generating set and the engine room corresponding to each other based on the whole machine noise test under at least two different acoustic states, wherein the at least two different acoustic states comprise whether noise reduction measures are taken for the engine room or not; calculating the overall external radiation noise of the engine room based on the noise contribution of the engine room, the test of at least one noise source component in the unit and the test of the acoustic characteristics of the engine room structure; And integrating the site noise attenuation model, the noise contribution of the blades and the external radiation noise of the whole engine room to establish a correlation model, wherein the correlation model is used for predicting the noise of the whole engine according to the component noise.
  2. 2. The method of claim 1, wherein said building a site noise attenuation model comprises: Constructing a theoretical propagation model comprising geometric divergence attenuation, atmospheric absorption attenuation and ground effect attenuation; performing on-site noise tests on the wind generating set at different distances on a target site to obtain actual measurement attenuation data; and correcting the theoretical propagation model based on the actually measured attenuation data to obtain the site noise attenuation model.
  3. 3. The method of claim 1, wherein the noise contribution comprises a noise parameter; based on the complete machine noise test under different acoustic states at least twice, the noise contribution of each corresponding blade and cabin in the wind generating set is separated, and the method comprises the following steps: in a first state that the cabin does not take preset noise reduction measures, performing a first complete machine noise test; In a second state that the cabin takes preset noise reduction measures, performing a second complete machine noise test; based on the acoustic energy superposition principle and the results of the two tests, decoupling and calculating independent blade corresponding noise parameters and cabin corresponding noise parameters.
  4. 4. A method according to claim 3, wherein said decoupling the calculation of the individual blade-corresponding noise parameters and nacelle-corresponding noise parameters based on the acoustic energy superposition principle and the results of the two tests comprises: expressing the first complete machine noise test result and the second complete machine noise test result as functions of the corresponding noise parameters of the blade, the corresponding noise parameters of the engine room and the field noise attenuation respectively; And carrying out simultaneous solving on the two function equations to obtain the noise parameters corresponding to the blades and the noise parameters corresponding to the engine room.
  5. 5. The method according to any one of claims 1 to 4, wherein said calculating the overall external radiation noise of the nacelle based on the noise contribution of the nacelle, the testing of at least one noise source component within the assembly and the testing of the acoustic properties of the nacelle structure comprises: testing and obtaining noise sound power of a gear box, a generator and a box-type transformer in the engine room; Testing and obtaining the ratio of the sound insulation coefficient to the noise leakage of the cabin cover of the cabin; And calculating to obtain the whole external radiation noise of the engine room based on the noise power of the gear box, the generator and the box-type transformer and the noise leakage quantity ratio of the sound insulation coefficient.
  6. 6. The method of claim 5, wherein said testing and deriving a cabin cover sound insulation coefficient to noise leakage ratio of the cabin comprises: Based on the set artificial sound source, measuring the sound power level of cabin cover, and based on the difference of sound power level, calculating the sound insulation coefficient and noise leakage ratio, or And based on the establishment of an acoustic simulation model of the cabin cover, the sound insulation coefficient and noise leakage amount ratio is obtained through simulation calculation.
  7. 7. The method according to any one of claims 1 to 4, wherein said integrating the site noise attenuation model, the noise contribution of the blade, and the cabin overall external radiation noise, after establishing a correlation model, further comprises: correcting a preset blade noise theoretical formula based on the noise contribution corresponding to the blade; and determining the contribution degree of the noise of the at least one noise source component to the whole machine noise based on the established association model.
  8. 8. The utility model provides a wind generating set noise correlation model establishment device which characterized in that, wind generating set noise correlation model establishment device includes: The system comprises a building module, a storage module and a storage module, wherein the building module is used for building a site noise attenuation model, and the site noise attenuation model is used for representing noise attenuation from a wind generating set to a designated receiving position; the separation module is used for separating noise contributions of the blades in the wind generating set and the engine room based on the whole machine noise test under at least two different acoustic states, wherein the at least two different acoustic states comprise whether noise reduction measures are taken for the engine room or not; the calculation module is used for calculating the external radiation noise of the whole engine room based on the noise contribution of the engine room, the test of at least one noise source component in the unit and the test of the acoustic characteristics of the engine room structure; The integration module is used for integrating the site noise attenuation model, the noise contribution of the blades and the overall external radiation noise of the engine room, and establishing a correlation model, wherein the correlation model is used for predicting the overall noise according to the component noise.
  9. 9. An electronic device, comprising: A processor, a memory, a communication interface; the memory is used for storing executable instructions of the processor; Wherein the processor is configured to perform the wind park noise correlation model building method of any of claims 1 to 7 via execution of the executable instructions.
  10. 10. A readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the wind turbine noise correlation model building method of any of claims 1 to 7.

Description

Wind generating set noise correlation model building method, device, equipment and medium Technical Field The application relates to the technical field of wind power generation, in particular to a method, a device, equipment and a medium for establishing a noise association model of a wind generating set. Background With the rapid development of wind power generation industry, wind farm sites are increasingly close to residential areas, and operation noise of wind power generation sets has become a key factor affecting environmental friendliness and community acceptance. Therefore, the method accurately predicts, evaluates and effectively controls the noise of the wind turbine generator, and has important engineering practical significance for meeting relevant regulations, optimizing wind field layout and implementing targeted noise reduction design. The accurate noise prediction model is built, and the noise level of the whole machine can be estimated in advance in the design stage, so that the model selection and wind field planning of the low-noise unit are guided, and the high cost caused by post treatment is avoided. In the related art, measurement and evaluation of wind turbine generator noise are mainly focused on independent noise test and evaluation of a complete machine or a component or modeling and prediction of blade noise based on a pneumatic acoustic theory. The method can not correlate the component noise characteristics, the cabin structure acoustic properties, the site propagation conditions and the final overall noise level with quantitative prediction models, so that the overall noise can not be effectively estimated through the known component noise, and the key source with the greatest contribution to the overall noise is difficult to accurately identify, so that the establishment and implementation of efficient and low-cost noise reduction measures are restricted. Disclosure of Invention The application provides a method, a device, equipment and a medium for establishing a noise association model of a wind generating set, which are used for solving the problems that the noise source of the wind generating set is difficult to identify and the effective noise reduction treatment is difficult to carry out due to the lack of a quantitative model of the association of components and the whole noise in the wind generating set in the related technology. In a first aspect, the present application provides a method for establishing a noise association model of a wind generating set, the method comprising: establishing a site noise attenuation model, wherein the site noise attenuation model is used for representing noise attenuation from a wind generating set to a designated receiving position; Separating noise contributions of the blades in the wind generating set and the engine room corresponding to each other based on the whole machine noise test under at least two different acoustic states, wherein the at least two different acoustic states comprise whether noise reduction measures are taken for the engine room or not; Calculating the external radiation noise of the whole engine room based on the noise contribution of the engine room, the test of at least one noise source component in the unit and the test of the acoustic characteristics of the engine room structure; And integrating the site noise attenuation model, the noise contribution of the blades and the external radiation noise of the whole engine room, and establishing a correlation model, wherein the correlation model is used for predicting the noise of the whole engine according to the component noise. In one embodiment of the disclosure, building a site noise attenuation model comprises constructing a theoretical propagation model comprising geometric divergence attenuation, atmospheric absorption attenuation and ground effect attenuation, performing site noise tests on a wind generating set at different distances on a target site to obtain actual measurement attenuation data, and correcting the theoretical propagation model based on the actual measurement attenuation data to obtain the site noise attenuation model. In one embodiment of the disclosure, the noise contributions comprise noise parameters, the noise contributions of the blades in the wind generating set and the nacelle are separated based on at least two complete machine noise tests in different acoustic states, the noise contributions comprise a first complete machine noise test in a first state in which the nacelle does not take preset noise reduction measures, a second complete machine noise test in a second state in which the nacelle takes preset noise reduction measures, and independent blade corresponding noise parameters and nacelle corresponding noise parameters are calculated in a decoupling mode based on the acoustic energy superposition principle and the results of the two tests. In one embodiment of the disclosure, based on an acoustic energy superpositi