The smoothing reactor is important equipment in the converter station and the accuracy of its noise level measurement directly affects the effect of controlling the noise of the smoothing reactor.In order to obtain the noise level of the smoothing reactor more accurately

a noise measurement method of the encrypted measuring points based on the GB/T 25092 measurement method is proposed.The near-field noise distribution characteristics of smoothing reactor are obtained by the combination of sound pressure measurement and simulation.It is shown by the result that the near-field noise distribution of smoothing reactor shows periodic variation characteristic on the horizontal circumference and the vertical direction.The Encryption measuring point layout scheme can effectively improve the accuracy of the measurement result and reflect the periodicity of the reactor noise more truly.Therefore

this method can be considered as an optimization scheme for noise measurement point of the current national standard measurement method.