Mathematical model of analysis of wave electromagnetic processes in three-winding transformers

A mathematical model for researching internal overvoltages in the windings of power three-winding transformers, based on the substitute circuit of an infinitesimal element considering the longitudinal and transverse inductive interconnections with electromagnetic connections between the windings and flux coupling from the main magnetic flux of the magnetowire in the form of a system differential equations in partial derivatives, is developed. The distribution of overvoltages along the windings, depending on the distance and time during the impulse overvoltage on them, as well as the distribution of overvoltages at different points of the high-voltage winding depending on time, of a three-winding power transformer, is researched.