Diseño e Implementación de un Banco Trifásico de 1 MVA con Transformadores Monofásicos conectados en Estrella-Estrella para la Optimización E Incremento de la capacidad de carga Instalada

Abstract

The project focuses on the design and implementation of a 1 MVA three-phase transformer bank, using three 333.3 kVA single-phase transformers in a wye-wye connection. Its objective is to increase the load capacity of the "El Shadday" rice industrial plant, overcoming the limitation of the existing 300 kVA three-phase transformer to integrate new high-consumption production lines. The research includes an analysis of the current situation, evaluating loads, power factor, infrastructure, and protection systems. A technical design is also carried out, selecting transformers, electrical diagrams, and protections, complying with standards such as IEC and IEEE. Electrical calculations are performed to size power and conductors, ensuring safety and future expansion. The methodology includes information gathering, drawing creation, and assembly and installation planning. Tests are conducted to validate the system, which operates at 70.4% of its nominal capacity. The results show a 233% increase in load capacity, a 30% reserve for future expansions, and reliability improvements. The technical specifications of the single-phase transformers required for the plant's electrical load were clearly defined, ensuring that the designed three-phase bank could efficiently handle the demand. The conclusions highlight that the bank's design meets current and future needs, ensuring efficiency and safety. It is recommended that a preventive maintenance program be maintained, real-time monitoring be implemented, technical staff be trained, and the power factor be improved. The transformer installation was successful and complied with current standards, achieving stable operation.