CN104568137B - The decision method of specific noise source contribution rate in noise testing - Google Patents
The decision method of specific noise source contribution rate in noise testing Download PDFInfo
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- CN104568137B CN104568137B CN201510014151.7A CN201510014151A CN104568137B CN 104568137 B CN104568137 B CN 104568137B CN 201510014151 A CN201510014151 A CN 201510014151A CN 104568137 B CN104568137 B CN 104568137B
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Abstract
The present invention relates to a kind of decision method of specific noise source contribution rate in noise testing, including step to have：(1) time domain, the frequency domain acoustic wave character curve A of instrument record electricity equipment intrinsic noise value are stored by sound wave Functional AnalysisDAnd intrinsic noise value FD；(2) instrument is stored by sound wave Functional Analysis and obtains the characterisitic function curve A and noise figure F of field integrated noise；(3) the intrinsic noise value and ambient noise value of power equipment are isolated from integrated noise value F, the intrinsic noise value of definition apparatus is FD, so as to obtain ambient noise value FX；(4) according to the F of said determinationDWith F values, contribution rate of the power equipment intrinsic noise value in integrated noise value is determined.Inventive method accurately separates power equipment intrinsic noise value from the integrated noise measured, obtains its contribution rate, judges the real source of noise, judges the operating condition of equipment.
Description
Technical field
The invention belongs to noise testing technical field, the judgement of specific noise source contribution rate in especially a kind of noise testing
Method.
Background technology
In recent years, resident complains substation's noise of city dweller compact district increased, at present, electric system planted agent
The test method for the noise that electric power facility produces resident settlement, measurement be measured point integrated noise value, it is necessary to
The noise floor value of removal is a kind of completely by the approximate test method artificially judged, the changeability of acoustic environment, complexity in addition,
The noise floor value measured is not near identical, therefore the generation of specific noise source can not be accurately obtained in a noise testing
Real noise value.
The content of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, and propose specific noise source contribution rate in a kind of noise testing
Decision method.
The present invention solves its technical problem and takes following technical scheme to realize：
The decision method of specific noise source contribution rate in a kind of noise testing, it is characterised in that the method comprising the steps of such as
Under：
(1) instrument is stored by sound wave Functional Analysis and records the time domain of particular power equipment intrinsic noise value, frequency domain sound wave
Characteristic curve ADAnd intrinsic noise value FD；
(2) by sound wave Functional Analysis store instrument obtain equipment use site integrated noise characterisitic function curve A and
Noise figure F；
(3) the intrinsic noise value and ambient noise value of particular power equipment are isolated from integrated noise value F, is temporarily assert
The intrinsic noise value of equipment is F at this timeD, so as to obtain ambient noise value FX；
(4) according to the F of said determinationDWith F values, contribution of the power equipment intrinsic noise value in integrated noise value is determined
Rate.
Moreover, in the step (3) if in consider particular power equipment intrinsic noise value change, with vibration pass
The acoustic wave character curve A of sensor measuring apparatusD0, and and ADIt is compared, if not changing, the F that is obtained in step (3)XValue
Accurately and reliably；If the A measuredD0Curve and ADChange after being compared, then selection measures power equipment in quiet environment
Acoustic wave character curve AD1And intrinsic noise value FD1, and data are stored in sound wave Functional Analysis storage instrument as solid again
There is value, F at this timeD1It is accurate, separation equipment intrinsic noise value F in the F values measured again from step (2)D1Make an uproar with environment
Sound value FX1, according to the F of measureD1With F values, contribution rate of the power equipment intrinsic noise value in integrated noise value is determined.
The advantages and positive effects of the present invention are：
1st, the method for the present invention accurately separates power equipment intrinsic noise value from the integrated noise measured, obtains its tribute
Offer rate, it can be determined that the real main source of noise；
2nd, the method for the present invention changes according to the sound wave function of intrinsic noise and compares, it can be determined that the operating condition of equipment.
Embodiment
Present invention implementation is further described below, following embodiments are descriptive, are not limited, it is impossible to
Protection scope of the present invention is limited with this.
The decision method of specific noise source contribution rate in a kind of noise testing, it is as follows that the method comprising the steps of：
(1) time domain of instrument record particular power equipment intrinsic noise value is stored by sound wave Functional Analysis, frequency domain (shakes
Width, frequency) acoustic wave character curve ADAnd intrinsic noise value FD；
(2) by sound wave Functional Analysis store instrument obtain equipment use site integrated noise characterisitic function curve A and
Noise figure F；
(3) the intrinsic noise value and ambient noise value of particular power equipment are isolated from integrated noise value F, is temporarily assert
The intrinsic noise value of equipment is F at this timeD, so as to obtain ambient noise value FX；
In the specific implementation of the present invention, if considering, the intrinsic noise value of particular power equipment changes, and is passed with vibration
The acoustic wave character curve A of sensor measuring apparatusD0, and and ADIt is compared, if not changing, the F that is measured in (3)XValue is accurate
Reliably；If the A measuredD0Curve and ADChange after being compared, select to measure the sound wave of power equipment in quiet environment
Characteristic curve AD1And intrinsic noise value FD1, and data are stored in sound wave Functional Analysis storage instrument again and regard eigenvalue, this
When FD1It is accurate, separation equipment intrinsic noise value F in the F values measured again from (2)D1With ambient noise value FX1；
(4) according to the F of said determinationD、FD1With F values, tribute of the power equipment intrinsic noise value in integrated noise value is determined
Offer rate.
Claims (1)
1. the decision method of specific noise source contribution rate in a kind of noise testing, it is characterised in that it is as follows that the method comprising the steps of：
(1) time domain, the frequency domain acoustic wave character of instrument record particular power equipment intrinsic noise value are stored by sound wave Functional Analysis
Curve ADAnd intrinsic noise value FD；
(2) the characterisitic function curve A and synthesis of the integrated noise of equipment use site are obtained by sound wave Functional Analysis storage instrument
Noise figure F；
(3) the intrinsic noise value and ambient noise value of particular power equipment are isolated from integrated noise value F, is temporarily assert at this time
The intrinsic noise value of equipment is FD, so as to obtain ambient noise value FX；
Wherein, if considering, the intrinsic noise value of particular power equipment changes, with the sound wave of vibrating sensor measuring apparatus
Characteristic curve AD0, and and ADIt is compared, if not changing, the F that is obtained in step (3)XValue is accurately and reliably；If the A measuredD0
Curve and ADChange after being compared, then selection measures the acoustic wave character curve A of power equipment in quiet environmentD1It is and solid
There is noise figure FD1, and data are stored in sound wave Functional Analysis storage instrument again and regard intrinsic noise value, F at this timeD1It is accurate
True, separation equipment intrinsic noise value F in the F values measured again from step (2)D1With ambient noise value FX1, according to measure
FD1With F values, contribution rate of the power equipment intrinsic noise value in integrated noise value is determined；
(4) according to the F of said determinationDWith F values, contribution rate of the power equipment intrinsic noise value in integrated noise value is determined.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908688B (en) * | 2015-05-20 | 2017-05-31 | 浙江吉利汽车研究院有限公司 | The method and device of vehicle active noise reduction |
| CN111881583A (en) * | 2020-07-29 | 2020-11-03 | 国网陕西省电力公司电力科学研究院 | Transformer substation noise reduction scheme design method based on sound source contribution analysis |
| CN112050931A (en) * | 2020-09-17 | 2020-12-08 | 广东电网有限责任公司电力科学研究院 | System and method for detecting environmental noise emission of transformer substation boundary |
Citations (3)
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| CN103217211A (en) * | 2013-04-09 | 2013-07-24 | 国家电网公司 | Substation noise source distribution measuring method based on synthetic aperture principle |
| CN103745037A (en) * | 2013-12-24 | 2014-04-23 | 华电重工股份有限公司 | Internal noise source identification method of waste heat boiler |
| CN103929706A (en) * | 2013-01-11 | 2014-07-16 | 克里佩尔有限公司 | Arrangement and method for measuring the direct sound radiated by acoustical sources |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929706A (en) * | 2013-01-11 | 2014-07-16 | 克里佩尔有限公司 | Arrangement and method for measuring the direct sound radiated by acoustical sources |
| CN103217211A (en) * | 2013-04-09 | 2013-07-24 | 国家电网公司 | Substation noise source distribution measuring method based on synthetic aperture principle |
| CN103745037A (en) * | 2013-12-24 | 2014-04-23 | 华电重工股份有限公司 | Internal noise source identification method of waste heat boiler |
Non-Patent Citations (3)
| Title |
|---|
| 发动机燃烧噪声与机械噪声对整机噪声贡献度的实验研究;魏凯等;《小型内燃机与摩托车》;20070831;第36卷(第4期);第82-84页 * |
| 柴油机机械噪声与燃烧噪声识别的试验研究;王之东等;《内燃机》;20071231(第6期);第38-41,46页 * |
| 高架城市轨道交通的噪声特性分析;贺建良等;《城市轨道交通研究》;20070831(第8期);第57-60页 * |
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