Aplicativo para cálculo da corrente máxima de derating para transformadores de potência de até 50mva em ambiente com distorção harmônica

Abstract

This work aims to study and apply, in a practical way, the 1986 norm ANSI/IEEE C57.110, concerning the Derating technique used to minimize the loss in conductors in harmonic distortion environments, and to prevent overheating in power transformers. To accomplish this goal, this work proposes an application developed in Swift, which provides an accessible and quick way to use the technique. The application also allows the user to estimate the life span of the transformer using different norms for a given maximum temperature measured on the conductors. Both functionalities combined can provide an analysis on the gain of the transformer’s durability when using the derating current provided. The application managed to perform well and provide data consistent with the references used on this work, therefore, proving that it can be used as tool to study and plan transformers longevity.