Análise dos impactos da sobretensão em sistemas industriais: estudo de caso na Fábrica United Distillers Machava

Abstract

This project analyzes the impacts of continuous overvoltage in the electrical system of the United Distillers factory, where voltages of 433 V (above the nominal 400 V) compromise the integrity of industrial equipment. The research identifies causes such as phase imbalances and inadequate transformer adjustments, resulting in accelerated equipment wear, increased operational costs, and reduced lifespan of critical assets, such as motors and mixers. To mitigate these issues, the implementation of a Dynamic Voltage Restorer (DVR) coupled with filters is proposed as a technical solution. The project includes modeling and simulation using Matlab Simulink, with an analysis of economic and technical feasibility, demonstrating that the initial investment of 1,804,205.00 MZN can generate estimated annual savings of 275,000.00 MZN, justifying its adoption. This work contributes to improving electrical energy quality and ensuring the sustainability of the factory's industrial operations.