Sound-intensity-method-based noise calculation method and system for transformer multipoint sound source model

A transformer and point sound source technology, applied in the field of substation noise analysis and control, can solve the problems of accuracy impact, achieve less process, convenient and accurate calculation, and improve the effect of prediction accuracy

Active Publication Date: 2016-11-09
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

This method is more common, but it is simplistic when modeling transformers, causing the accuracy of the results to be affected

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  • Sound-intensity-method-based noise calculation method and system for transformer multipoint sound source model
  • Sound-intensity-method-based noise calculation method and system for transformer multipoint sound source model
  • Sound-intensity-method-based noise calculation method and system for transformer multipoint sound source model

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[0046] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0047] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The invention provides a sound-intensity-method-based noise calculation method and system for a transformer multipoint sound source model. The method comprises the steps that noise intensity levels of a plurality of measure points on the side faces of a transformer are measured to obtain the total A-weighting sound intensity level of each measure point; noisy data is grouped according to the number of the measure points on each side face and the number of point sound sources needing to be equivalent; a plurality of groups of noisy data are subjected to superposition according to a sound intensity method to obtain total A-weighting sound power levels of the multiple equivalent point sound sources; the multiple equivalent point sound sources on each side face form a face sound source of the side face, wherein the positions of the multiple equivalent point sound sources are allocated according to positions of the measure points; a multipoint sound source model for multiple equivalent points of each side face of each phase of the transformer is established; the position of a predicted point is determined, and the equivalent point sound sources for the noise at the position of the predicted point are determined according to the multipoint sound source model; coordinate systems are established for predicted points in different directions, and the noise at the predicted points is calculated according to the point sound source outdoor transmission theory.

Description

technical field [0001] The invention relates to the field of analysis and control of substation noise, and more specifically, to a noise calculation method and system for a multi-point sound source model of a transformer based on the sound intensity method. Background technique [0002] With the continuous increase of power load in our country, in order to improve the transmission efficiency of electric energy, the voltage level of transmission lines is also continuously improved, and the number of EHV / UHV substations is also increasing. Therefore, the noise problem due to substation vibration is also more serious. The noise of substations mainly comes from transformers and other equipment, which will not only affect the lives of surrounding residents but also affect the operating life of transformers, which is a very important environmental and health problem. [0003] Before substation construction, it is necessary to understand the characteristics of its noise distributi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01H17/00
CPCG01H17/00G06F30/367G06F2119/10
Inventor 裴春明张斌倪园周兵张建功路遥张业茂谢辉春刘兴发
Owner CHINA ELECTRIC POWER RES INST
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