Sabat M. Three-phase transformers model for network internal overvoltage impact studying

Models of three-phase transformers and autotransformers, which adequately represent electromagnetic processes along transformer windings, are created in the dissertation. The model consists of two-networks and allows studying the influence of the construction elements on the character and magnitude of the parameters of electromagnetic processes in certain points of a winding, which is influenced by network internal overvoltages. A methods of experimental determination of frequency characteristics of construction elements transformer are developed. The synthesized models of three-phase transformers, with high enough for practice level, reproduce the electromagnetic processes in windings and insulation when the transformer is under the influence of overvoltages.