Research on the Effect of Plant Boundary Conditions on Noise Attenuation in UHV Substations

Abstract

Accurately analyzing the influence of the terrain environment of the plant boundary on noise transmission and attenuation can not only give guidance for the substation site selection and station layout optimization, but also provide theoretical basis for noise abatement after the substation has been put into operation. In this paper, by applying sound level meters to test the sound pressure of the main equipment in the substation and the noise around the plant boundary, the noise characteristics of main transformers and shunt reactors, as well as the noise distribution around the plant boundary were analyzed, thus concluding that the noise at the plant boundary is mostly derived from the main equipment within the substation. While taking the layout of the Zhebei UHV Substation as an example, this paper chose the SoundPLAN software to simulate and calculate the noise attenuation law under seven terrain conditions outside the plant boundary, and finally such a proposition as the low-lying terrain and the raised hilly terrain can best interrupt the noise transmission was made. The conclusions of this paper can provide a theoretical reference for site selection of new substations and optimizing the terrain structures of substations in operation.