Depreciação dos Transformadores em Função do Envelhecimento Causado pelas Distorções Harmônicas de Corrente

Fábio de Oliveira Carvalho; André Nunes de Souza; Se Un Ahn; Shigeaki Leite de Lima; Danilo Sinkiti Gastaldelo; André Giffalli

doi:10.20906/sbse.v2i1.3061

Fábio de Oliveira Carvalho Dep. de Eng. Elétrica - FEB - Bauru
André Nunes de Souza Dep. de Eng. Elétrica - FEB - Bauru
Se Un Ahn Aplicação e Inovação Tecnológica em QEE (Appitec) - Jundiai
Shigeaki Leite de Lima Diretoria de Gestão da Inovação e Serviços Tecnológicos - UFMA - São Luis
Danilo Sinkiti Gastaldelo Dep. de Ciências Exatas e Sociais Aplicadas - UNISAGRADO - Bauru
André Giffalli Dep. de Eng. Elétrica - FEB - Bauru

DOI: https://doi.org/10.20906/sbse.v2i1.3061

Keywords: Distribution transformer, Harmonic Current Distortions, Transformer Total Losses, Transformer Temperature, Loss Life

Abstract

This paper presents a case that consists of an A4 (13,8 kV) consumer category, which uses a distribution transformer to connect their installations to the distribution power system. Some measurements were done, and a nonsinuidal load currents is verified. An analysis was carried out based on the concepts in the IEEE std 57.110/2018 and IEEE std 57.91/2011 standards, with the objective of quantifying the harmful phenomena that occurs in the distribution transformer, and the depreciation provided in this property in function of harmonic currents. The results obtained demonstrate that there may be a loss in the life expectancy of the transformer, accelerating the depreciation of the assets, negatively interfering in the costs of that company.