A study on suitability of different transformer winding models for frequency response analysis

Abstract

This paper discusses on the applicability of three methods namely n-ladder network, multi-conductor transmission line (MTL) and hybrid MTL to model the transformer winding frequency response. These methods have been used to model an actual transformer winding with end-to-end short circuit configuration. The corresponding model parameters are calculated based on winding construction and geometrical information. The frequency response curves obtained from different models are compared with the measured frequency response. Based on the obtained results, the suitability of considered techniques for modelling the end-to-end short circuit winding configuration is discussed.