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Calculation of noise maps around electrical energy substations
Authors:Fabiano B Diniz
Institution:Laboratório de Acústica Ambiental, Departamento de Engenharia Mecânica, Centro Politécnico, Universidade Federal do Paraná, Bairro Jardim das Américas, CEP: 81531-990 Curitiba, Paraná, Brazil
Abstract:This work is aimed at studying the noise caused by the transformers found in electrical substations located in calm areas in the city of Curitiba, Brazil. Although the level itself reaching the nearby buildings is not high if compared to other noise sources commonly found in a large city, they produce an annoying noise due to its low frequency tonal components. Two substations and their surroundings have been analyzed and acoustically mapped. The results have shown that some houses receive up to 35 dB(A) near one of the substations, which may led to some discomfort. It has also been noticed that a good planning of a substation, mainly of the firewalls, may help putting the houses under acoustical shadows.
Keywords:Noise mapping  Electrical substation noise
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