CN104568137A - Judging method of specific noise source contribution rate in noise test - Google Patents
Judging method of specific noise source contribution rate in noise test Download PDFInfo
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- CN104568137A CN104568137A CN201510014151.7A CN201510014151A CN104568137A CN 104568137 A CN104568137 A CN 104568137A CN 201510014151 A CN201510014151 A CN 201510014151A CN 104568137 A CN104568137 A CN 104568137A
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Abstract
The invention relates to a judging method of a specific noise source contribution rate in a noise test. The method comprises the steps that firstly, a time domain and frequency domain sound wave characteristic curve AD of an intrinsic noise value of electrical equipment and the intrinsic noise value FD are recorded by a sound wave function analyzing storage device; secondly, a characteristic function curve A and a noise value F of comprehensive noise of a site are obtained through the sound wave function analyzing storage device; thirdly, an intrinsic noise value and an environmental noise value of the electrical equipment are separated from the comprehensive noise value F, the intrinsic noise value of the equipment is identified to be FD, and therefore the environmental noise value FX is obtained; fourthly, the contribution rate of the intrinsic noise value of the electrical equipment in the comprehensive noise value is determined according to the acquired FD value and the acquired F value. According to the judging method of the specific noise source contribution rate in the noise test, the intrinsic noise value of the electrical equipment is accurately separated from the acquired comprehensive noise value to obtain the contribution rate of the intrinsic noise value, and the real source of noise and the operation condition of the equipment can be judged.
Description
Technical field
The invention belongs to noise measurement technical field, the decision method of specific noise source contribution rate in especially a kind of noise testing.
Background technology
In recent years, the transformer station noise of resident to city dweller compact district is complained and is day by day increased, at present, in electric system, the electric power facility of application is to the method for testing of the noise that resident settlement produces, what measure is the integrated noise value of measured point, the noise floor value removed is needed to be a kind of approximate test method judged completely artificially, in addition changeability, the complicacy of acoustic environment, the noise floor value recorded is closely not identical, therefore can not obtain the real noise value that specific noise source produces in a noise testing accurately.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, and propose the decision method of specific noise source contribution rate in a kind of noise testing.
The present invention solves its technical matters and takes following technical scheme to realize:
A decision method for specific noise source contribution rate in noise testing, is characterized in that the method comprising the steps of as follows:
(1) time domain, the frequency domain acoustic wave character curve A of instrument record particular power equipment intrinsic noise value is stored by sound wave Functional Analysis
dand intrinsic noise value F
d;
(2) store by sound wave Functional Analysis characteristic function curve A and the noise figure F that instrument obtains the integrated noise at equipment use scene;
(3) from integrated noise value F, isolate intrinsic noise value and the neighbourhood noise value of particular power equipment, temporarily assert that the intrinsic noise value of now equipment is F
d, thus obtain neighbourhood noise value F
x;
(4) according to the F of said determination
dwith F value, determine the contribution rate of power equipment intrinsic noise value in integrated noise value.
And, in described step (3) if in consider that the intrinsic noise value of particular power equipment changes, then use the acoustic wave character curve A of vibration transducer measuring equipment
d0, and and A
dcompare, if not change, then the F obtained in step (3)
xvalue accurately and reliably; If the A recorded
d0curve and A
dchange after comparing, then select the acoustic wave character curve A measuring power equipment in quiet environment
d1and intrinsic noise value F
d1, and data are stored in again as eigenvalue in sound wave Functional Analysis storage instrument, F now
d1accurately, separation equipment intrinsic noise value F in the F value again recorded from step (2)
d1with neighbourhood noise value F
x1, according to the F measured
d1with F value, determine the contribution rate of power equipment intrinsic noise value in integrated noise value.
Advantage of the present invention and good effect are:
1, power equipment intrinsic noise value is separated by the inventive method accurately from the integrated noise recorded, and obtains its contribution rate, can judge the real main source of noise;
2, the inventive method is according to the sound wave function comparison of intrinsic noise, can the ruuning situation of judgment device.
Embodiment
Be further described the invention process below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A decision method for specific noise source contribution rate in noise testing, it is as follows that the method comprising the steps of:
(1) time domain, frequency domain (amplitude, frequency) the acoustic wave character curve A of instrument record particular power equipment intrinsic noise value is stored by sound wave Functional Analysis
dand intrinsic noise value F
d;
(2) store by sound wave Functional Analysis characteristic function curve A and the noise figure F that instrument obtains the integrated noise at equipment use scene;
(3) from integrated noise value F, isolate intrinsic noise value and the neighbourhood noise value of particular power equipment, temporarily assert that the intrinsic noise value of now equipment is F
d, thus obtain neighbourhood noise value F
x;
In specific embodiment of the invention, if consider, the intrinsic noise value of particular power equipment changes, by the acoustic wave character curve A of vibration transducer measuring equipment
d0, and and A
dcompare, if not change, then the F recorded in (3)
xvalue accurately and reliably; If the A recorded
d0curve and A
dchange after comparing, select the acoustic wave character curve A measuring power equipment in quiet environment
d1and intrinsic noise value F
d1, and data are stored in again as eigenvalue in sound wave Functional Analysis storage instrument, F now
d1accurately, separation equipment intrinsic noise value F in the F value again recorded from (2)
d1with neighbourhood noise value F
x1;
(4) according to the F of said determination
d, F
d1with F value, determine the contribution rate of power equipment intrinsic noise value in integrated noise value.
Claims (2)
1. the decision method of specific noise source contribution rate in noise testing, is characterized in that the method comprising the steps of as follows:
(1) time domain, the frequency domain acoustic wave character curve A of instrument record particular power equipment intrinsic noise value is stored by sound wave Functional Analysis
dand intrinsic noise value F
d;
(2) store by sound wave Functional Analysis characteristic function curve A and the noise figure F that instrument obtains the integrated noise at equipment use scene;
(3) from integrated noise value F, isolate intrinsic noise value and the neighbourhood noise value of particular power equipment, temporarily assert that the intrinsic noise value of now equipment is F
d, thus obtain neighbourhood noise value F
x;
(4) according to the F of said determination
dwith F value, determine the contribution rate of power equipment intrinsic noise value in integrated noise value.
2. the decision method of specific noise source contribution rate in noise testing according to claim 1, it is characterized in that: in described step (3) if in consider that the intrinsic noise value of particular power equipment changes, then use the acoustic wave character curve A of vibration transducer measuring equipment
d0, and and A
dcompare, if not change, then the F obtained in step (3)
xvalue accurately and reliably; If the A recorded
d0curve and A
dchange after comparing, then select the acoustic wave character curve A measuring power equipment in quiet environment
d1and intrinsic noise value F
d1, and data are stored in again as eigenvalue in sound wave Functional Analysis storage instrument, F now
d1accurately, separation equipment intrinsic noise value F in the F value again recorded from step (2)
d1with neighbourhood noise value F
x1,according to the F measured
d1with F value, determine the contribution rate of power equipment intrinsic noise value in integrated noise value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510014151.7A CN104568137B (en) | 2015-01-12 | 2015-01-12 | The decision method of specific noise source contribution rate in noise testing |
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| CN201510014151.7A CN104568137B (en) | 2015-01-12 | 2015-01-12 | The decision method of specific noise source contribution rate in noise testing |
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| CN104568137A true CN104568137A (en) | 2015-04-29 |
| CN104568137B CN104568137B (en) | 2018-04-27 |
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| CN104908688A (en) * | 2015-05-20 | 2015-09-16 | 浙江吉利汽车研究院有限公司 | Method and device for active noise reduction of vehicle |
| 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 |
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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 |
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| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908688A (en) * | 2015-05-20 | 2015-09-16 | 浙江吉利汽车研究院有限公司 | Method and device for active noise reduction of vehicle |
| 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 |
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| Publication number | Publication date |
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| CN104568137B (en) | 2018-04-27 |
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