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Judgment method of specific noise source contribution rate in noise test

A technology of noise testing and judgment method, which is applied in the measurement of ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc.

Active Publication Date: 2018-04-27
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0002] In recent years, residents have increasingly complained about the noise of substations in densely populated urban areas. At present, the test method for the noise generated by power facilities in residential areas in the power system measures the comprehensive noise value of the measured point, and the noise that needs to be removed The background noise value is an approximate measurement method that relies entirely on human judgment. In addition to the variability and complexity of the acoustic environment, the measured background noise values ​​are not nearly the same. Therefore, it is not possible to accurately obtain the specific noise source in a noise test. The true noise value of

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Embodiment Construction

[0014] The implementation of the present invention will be described in further detail below. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0015] A method for judging the contribution rate of a specific noise source in a noise test, the method comprising the following steps:

[0016] (1) Record the time-domain and frequency-domain (amplitude, frequency) acoustic wave characteristic curve A of the inherent noise value of specific power equipment through the acoustic wave function analysis storage instrument D and the intrinsic noise value F D ;

[0017] (2) Obtain the characteristic function curve A and the noise value F of the comprehensive noise of the equipment using the site through the acoustic wave function analysis storage instrument;

[0018] (3) Separate the inherent noise value and environmental noise value of specific electric equipment from the comprehensive noise value F, and tempo...

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Abstract

The invention relates to a method for judging the contribution rate of a specific noise source in a noise test, comprising the following steps: (1) recording the time-domain and frequency-domain acoustic wave characteristic curve AD and the inherent noise of the inherent noise value of electric equipment through an acoustic wave function analysis storage instrument (2) Obtain the characteristic function curve A and noise value F of the on-site comprehensive noise through the acoustic wave function analysis storage instrument; (3) Separate the inherent noise value and environmental noise value of the power equipment from the comprehensive noise value F, and identify the equipment The inherent noise value of the power equipment is FD, so as to obtain the environmental noise value FX; (4) According to the FD and F values ​​measured above, determine the contribution rate of the inherent noise value of the power equipment in the comprehensive noise value. The inventive method accurately separates the inherent noise value of the power equipment from the measured comprehensive noise, obtains its contribution rate, judges the real source of the noise, and judges the operation status of the equipment.

Description

technical field [0001] The invention belongs to the technical field of noise measurement, in particular to a method for judging the contribution rate of a specific noise source in noise testing. Background technique [0002] In recent years, residents have increasingly complained about the noise of substations in urban densely populated areas. At present, the test method for the noise generated by power facilities in residential areas in the power system measures the comprehensive noise value of the measured point, and the noise that needs to be removed The background noise value is an approximate measurement method that relies entirely on human judgment. In addition to the variability and complexity of the acoustic environment, the measured background noise values ​​are not nearly the same. Therefore, it is not possible to accurately obtain the specific noise source in a noise test. the true noise value of . Contents of the invention [0003] The purpose of the present i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
Inventor 郝春艳邵林郭军科卢立秋于金山赵鹏苏展
Owner STATE GRID CORP OF CHINA
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