Nowadays, the environmental protection problem which is caused by urban substation noise is getting more and more serious. Before substation noise management, we should understand substation noise value at boundary or sensitive point and be able to reasonably judge noise para-normal area, distribution form, etc. In this paper, the Cadna/A calculation software is adopted to establish the substation prediction model. Through analyzing the characteristics of the urban substation, we compare actual test value and predictive value and verify the accuracy of the prediction. According to the real situation of substation, the parameter settings of noise prediction software were analyzed, and the basic principles of layout optimization based on noise control in substation were determined. After the layout optimization design of substations, the adjustment measures of main transformer, reactor, firewall and buildings were proposed. In this study, the parameter setting method in analysis of noise prediction was proposed. And it also provides technical basis for substation noise prediction. The layout optimization design method based on noise control was proposed.
