A transformer far-field noise prediction method and system

A prediction method and transformer technology, applied in the field of transformers, to achieve the effects of improving prediction speed and prediction accuracy, accurate prediction results, and simple implementation methods

Active Publication Date: 2017-03-22
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Although many studies have been carried out on the prediction of far-field noise of transformers at home and abroad, so far, no method for predicting far-field noise of transformers has been generally accepted.

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  • A transformer far-field noise prediction method and system
  • A transformer far-field noise prediction method and system
  • A transformer far-field noise prediction method and system

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0047] Such as figure 1 As shown, the specific implementation steps of the transformer far-field noise prediction method in this embodiment are as follows:

[0048] 1) Prediction model establishment: the transformer is equivalent to a hexahedron, and the four-point source prediction model and the five-point source prediction model of the far-field noise of the transformer are established according to the near-field noise value of the transformer, and the model switching distance is set according to the shape and size of the hexahedron; The four-point source prediction model represents the far-field noise as four faces in the hexahedron as the noise generated by the four point sources at the prediction point, and the five-point source prediction model represents ...

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Abstract

The invention discloses a transformer far-field noise prediction method and system. The method comprises the following steps: 1) equivalently regarding a transformer as a hexahedron, establishing a four-point source prediction model and a five-point source prediction model of transformer far-field noise according to near-field noise values, and setting model switching distance according to external dimension of the hexahedron; 2) detecting horizontal distance between a current prediction point and a transformer case; 3) comparing the horizontal distance with the model switching distance; if the horizontal distance is shorter than or equal to the model switching distance, calculating the noise value of the current prediction point according to the established four-point source prediction model; if the horizontal distance is longer than or equal to the model switching distance, calculating the noise value of the current prediction point according to the established five-point source prediction model. The system comprises a prediction model establishment module, a distance detection module and a noise prediction module. The transformer far-field noise prediction method and system have the advantages that the realization method is simple, the prediction speed is fast and the prediction results are accurate.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a transformer far-field noise prediction method and system. Background technique [0002] With the development of social economy, the acceleration of urbanization process and the continuous improvement of power grid level, the noise generated in the operation of power transmission and transformation equipment has an increasing impact on people's lives. The environmental protection problems caused by the noise generated during the operation of the substation occur frequently, so more and more people pay more and more attention to it. One of the main noise sources in the substation is the transformer. The transformer manufacturer usually provides the transformer noise control value in the technical agreement, but usually only the near-field noise value, generally the noise value at 2m away from the transformer shell, and cannot provide the far-field sound power value of the tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 胡胜陈绍艺周年光彭继文李铁楠吴晓文
Owner STATE GRID CORP OF CHINA
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