Voltage distribution constant versus losses in medium-voltage distribution transformer: A polynomial interpolation approach

摘要

This paper aims to calculate an estimate of the initial stress voltage distribution in the transformer windings through their losses (that can be reduced by varying the construction parameters such as conductor section and size of the core window) through the numerical interpolation applied in capacitances of distribution transformers 30, 45, 75 and 112.5 kVA, 15 kV class. The calculations of the projects were organized into sets, with simultaneous variation of three construction parameters, totaling analysis of 10,648 projects of each power transformers arranged in three-dimensional arrays. The equation of the constant voltage distribution (alpha-factor) according to the losses through the quadratic polynomial and cubic splines for the of LV and HV windings is formulated. (c) 2016 Elsevier Ltd. All rights reserved.