Modeling calculation method for noise sound field of transformer substation

Abstract

The invention relates to a modeling calculation method for a noise sound field of a transformer substation. The method comprises the following steps: buildinga transformer substation model according to the actual scene and dividing a sound source of the transformer substation model into an outdoor sound source and an indoor sound source; measuring sound pressure level corresponding to the outdoor sound source of the transformer substation model on the actual scene and obtaining sound pressure level of the outdoor sound source; measuring sound pressure level corresponding to the indoor sound source of the transformer substation model on the actual scene, converting the sound pressure level into an equivalent outdoor sound source based on the built transformer substation model and obtaining sound pressure level of the equivalent outdoor sound source; converting the sound pressure level of the outdoor sound source and the sound pressure level of the equivalent outdoor sound source into the acoustic power level of the outdoor sound source and the acoustic power level of the equivalent outdoor sound source; and calculating to obtain noise value of the sound field of the transformer substation based on the acoustic power level of the outdoor sound source and the equivalent outdoor sound source. Compared with the prior art, the modeling calculation method for the noise sound field of the transformer substation has the following advantages of easy calculation, few calculated amount and convenient analyses.

Description

technical field [0001] The invention relates to the field of noise research of substations, in particular to a modeling calculation method for noise sound field of substations. Background technique [0002] With the synchronous and rapid advancement of power grid construction and urban development, urban substations are getting closer and closer to environmentally sensitive points such as hospitals, residential areas, and schools. It has occurred that "the existing noise control technologies are all aimed at the end treatment of substations with excessive noise. On the one hand, energy saving is not considered. On the other hand, the post-treatment also affects the appearance of the substation. Therefore, it is necessary to optimize noise reduction in the design stage of urban indoor substations. . [0003] To optimize the noise reduction of a substation, it is first necessary to calculate the noise field of the substation. However, due to the complex structure of the subst...

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Problems solved by technology

[0003] To optimize the noise reduction of substations, it is first necessary to calculate the noise sound field of the substation. However, due to the complex structure of the substation and the variety of noise sources, the calculation parameters of the noise sound field of the substation are many and the calculation amount is large, which is difficult to calculate. Therefore, it is necessary to build Model calculation of noise sound field in substation

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