The finite element calculation and simulation software COMSOL Multiphysics is used to simulate the main transformer room in different ventilation and cooling schemes, and the sound field model in COMSOL Multiphysics is also used to calculate the sound field of the main transformer room of the indoor substation. According to the simulation results, through the analysis of temperature field, velocity field and sound field, the organization of indoor air flow of each scheme is compared, the advantages and disadvantages of each design scheme are analyzed, and finally the better ventilation and cooling air flow and noise reduction are obtained. organization plan. The relative simulation calculation and analysis of the ventilation, cooling and noise reduction of typical indoor substations are carried out. On the basis of the result data of numerical calculation and simulation, the advantages, disadvantages and existing problems of the typical indoor variable ventilation, cooling and noise reduction scheme are analyzed, and the proposed Suggestions for further improvement have certain guiding significance for practical engineering.

indoor substation; finite element method; Noise reduction; ventilation and heat dissipation; optimization