Parametric Identification of a Single-Phase Power Transformer

The paper considers a method for determining the parameters of the T-circuit of a single-phase power transformer from the measured instantaneous values of current and voltage on its sides.Based on the transformer model, the operation of the proposed method is demonstrated. Stable functioning is shown when working under load and in the event of a short circuit at the secondary winding terminals.Recommendations are proposed for choosing the averaging interval of the error function and selecting additional equations of the system.