Research on the Harmonic Transfer Characteristics of Electromagnetic Transformer

As the connecting element of the primary system and the secondary system, the harmonic transfer characteristics of electromagnetic transformers directly affect protective relays in the power system. This paper establishes a new broadband harmonic equivalent model of the electromagnetic transformer and uses its transfer function to analyze the harmonic transfer characteristics of the transformer under different structural parameters. The built model was simulated and verified in MATLAB, and the conclusions obtained provide a reference for the application of electromagnetic transformers under harmonic conditions.