Method for measuring transformer leakage magnetic field signals based on improved svmd combined with wavelet threshold method

Abstract

The present disclosure relates to the technical field of detection for leakage magnetic field of a transformer in an electric power system, and particularly to a method for measuring transformer leakage magnetic field signals based on improved SVMD combined with a wavelet threshold method. The method includes: Step 1: determining a parameter of the SVMD parameter through a NRBO; Step 2: performing, on the basis of the Step 1, an SVMD on a leakage magnetic field signal measured by a magneto-optical sensor; and Step 3: further processing residual noise in the signal in conjunction with a wavelet threshold method.

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