Procedimentos de manutenção em transformadores de potência – estudos de casos em centro de manutenção

Abstract

The maintenance of power transformers in maintenance centers involves complex procedures whose efficiency is fundamental to guaranteeing the reliability and durability of these strategic assets. The absence of a standardized routine can lead to operational errors and inaccurate diagnoses, directly impacting the safety and lifecycle costs of the equipment. In this context, the objective of this work is to present the development of a methodology for standardizing preventive and corrective maintenance procedures in power transformers, focusing on activities performed in specialized repair centers. The methodology adopted was based on the elaboration of technical flowcharts, developed from a review of technical and normative literature, and application and validation through a real case study of a 34.5/13.8 kV and 4.3 MVA power transformer. As a result, these flowcharts clearly and sequentially map all stages of the process, from receiving the equipment and performing diagnostic tests to the disassembly, repair, and final commissioning phases. Therefore, it is concluded that this final course project offers a practical application tool for the management and execution of maintenance, contributing to the mitigation of procedural failures, optimization of routines, and the training of technical teams, aiming at increasing the operational reliability of power transformers.