Transient Harmonic Analysis of Transformer

Abstract

The project focuses on the harmonic analysis of transformer during the switching transient period. Analysis is made using Discrete Time Fourier Transforms (DTFT). Measuring fundamental and second harmonics of differential current, an algorithm based on the Discrete Fourier Transform and an amplitude estimator are used to simulate and list various harmonic components of current and flux. Generalized functions for describing the relationships between resultant flux and harmonic components are derived. This is important to find these relations for further use in detecting non-linearity and elimination of harmonic components.