Effect of the Decrease of the Longitudinal Component of Induction in the Vicinity of the Edges of Windings on the Additional Losses in Transformer Windings Caused by this Component.

It is shown that adopting a constant induction longitudinal component value determined under the consideration of the Rogowski coefficient gives sufficiently accurate additional loss values from the point of view of its balance. When considering in detail the probability of hot spots in windings, it is advisable to take into account the nonuniform distribution of additional losses caused by the longitudinal field.