Abstract
Because the substation had come to be built in the city, the noise reduction technology of the power transformer came to be demanded. About the noise decreasing technology of the power transformer, the soundproofing technique of the tank, the vibration decreasing technology of the core and coil have been announced. However, neither the vibration property of the tank nor distributive characteristics of the noise in the tank are clear when energizing to the power transformer. This paper reports the results of measurement about vibration property of the tank and the sound intensity on energizing to the power transformer. Also we investigate the reliability of the Finite Element Method (FEM) model and the Boundary Element Method (BEM) model constructed by using the results of a measurement.
