In order to realize the control and treatment of substation noise, and scientifically grasp the prediction method of substation noise characteristics, the research on "UHV substation sound source model solution method" has important engineering application value.This paper proposes an equivalent source algorithm based on a noise attenuation model. The algorithm calculates the simulated sound pressure level of each measuring point under the initial value of the source intensity of each sound source device, and collects the measured sound pressure level of each measuring point. The principle of sound pressure superposition establishes a multivariate nonlinear equation set, and then uses the least square method to solve the equation set to obtain the true value of the source intensity of each sound source.Taking an UHV substation as the test object, this method is used to calculate the source strength of UHV transformers, and the results of simulation and measured values are compared and analyzed.The test results show that the algorithm has faster calculation efficiency and higher accuracy of calculation results, which provides a new method for solving substation sound sources.

UHV,Transformer,Sound power,Equivalent source method