Reconstruction of High-order Harmonic Signal in AT Power Supply System

Abstract

In the process of power transmission, power quality disturbance is caused by the phenomenon of "excitation inrush current" and "leakage resistance" of the core equipment AT in the power supply system. Harmonic signals contain higher harmonics. In this paper, the power supply system under AT mode is modeled, and a damping trapezoidal algorithm is proposed to suppress the numerical oscillations caused by the coupling between AT windings. A new orthogonal matching pursuit algorithm for multi-spectral interpolation correction is proposed. (OMP-MIC), reconstructing the occurrence of higher harmonic signals, improving reconstruction efficiency and accurately recovering the original signal; finally, verifying the validity of the model and the superiority of the reconstruction algorithm through simulation.