Maximización de la vida técnica de transformadores de potencia a través de espectroscopía dieléctrica.

Abstract

This article aims to maximize the useful life of power transformers using the results of the practice of dielectric spectroscopy (dielectric response measurements to the frequency), where an optimization model is proposed that will determine the optimal operating temperature of the equipment for each period of analysis. Although, in IEEE Std. C57.91-2011, the loss of useful life of cellulose does not consider the effects of hydrolysis and oxidation, the algorithm proposed in this research work bases its structure on recent studies, where the Arrhenius equation is linked to a kinetic equation model to describe the paper aging. The proposed model makes use of optimization techniques, based on non-linear programming, which is valid because it uses the results of dielectric spectroscopy practices to define the operating temperature of power transformer in each analysis period that will maximize its residual life, as a result of the minimization of the cellulose aging acceleration factor, subject to operating restrictions and which allows the solid insulation of the equipment to be maintained in healthy conditions.