https://repositorio.ifpe.edu.br/xmlui/handle/123456789/467 Trabalho de Conclusão de Curso - TCC Tue, 26 May 2026 11:15:12 GMT 2026-05-26T11:15:12Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2197 Gerenciamento da energia em um consumidor industrial no município de Garanhuns – PE This study presents an analysis of the electrical load profile of a food industry plant operating in the Free Contracting Environment, with emphasis on contracted demand optimization and on the assessment of alternatives to improve the installation’s techno-economic performance. The research was developed based on the characterization of the consumer unit, its electrical supply system, and the contractual conditions of electricity supply, using mass memory data recorded at 15-minute intervals throughout 2024 and 2025. The adopted methodology comprised data processing and validation, the construction of annual and average daily active and reactive demand curves, power factor analysis, and the calculation of energy performance indicators. In addition, different contracted demand values were simulated in order to determine the economically optimal point, and energy efficiency proposals related to the replacement of old motors and the retrofit of the existing capacitor bank system were evaluated. The results showed that the current contracted demand of 550 kW is higher than the plant’s actual requirement, with 500 kW being the most technically appropriate alternative within the regulatory constraints of the Free Contracting Environment, with potential for annual cost reduction. It was also found that the capacitor bank retrofit is economically feasible, with an internal rate of return of 36.74% per year, a net present value of R$ 34,015.99, and a payback period compatible with industrial criteria. It is therefore concluded that mass memory analysis constitutes a relevant tool to support contractual and operational decision-making, promoting higher energy efficiency, cost reduction, and improved electrical performance of the industrial installation. Wed, 20 May 2026 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2197 2026-05-20T00:00:00Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2178 Avaliação da injeção de harmônicos em um sistema fotovoltaico conectado à rede de baixa tensão com módulos danificados por impactos mecânicos The growth of distributed generation through grid-connected photovoltaic systems has increased the need for studies related to the reliability and quality of the electrical energy supplied. Some situations negatively influence the performance of photovoltaic systems, such as mechanical failures in modules, altering the electrical characteristics of the array and resulting in a possible intensification of harmonic component injection into the electrical grid. Therefore, this study aims to evaluate the impacts caused by mechanical failures in photovoltaic modules on harmonic injection in a grid-connected photovoltaic system operating at low voltage. To achieve this objective, a literature review on the relevant topics was conducted along with an experimental analysis carried out in a photovoltaic system installed at the Laboratory of Technology and Renewable Energy (LATER) of the Federal Institute of Pernambuco (IFPE) – Garanhuns Campus. In the experimental stage, three scenarios were defined for evaluation: the first with all modules intact, the second with one damaged module, and the third with two damaged modules. The data were obtained using a power quality analyzer connected to the system and configured according to the requirements established by current technical standards. The measurements were performed for at least seven days, totaling 1008 valid readings. The results demonstrated that the introduction of damaged modules did not result in significant changes in voltage and current harmonic distortion levels. The indicators related to voltage harmonics remained within the limits established by technical standards for low-voltage systems, while current harmonic distortion values showed variations mainly influenced by the operational and environmental conditions of the system, especially solar irradiance and the inverter operating regime. Therefore, under the analyzed conditions, the mechanical failures in the photovoltaic modules did not compromise the power quality supplied to the grid. Fri, 08 May 2026 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2178 2026-05-08T00:00:00Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2003 Automação da modelagem de dispositivos eletrônicos inteligentes (IEDS) SEL no engineering base PTD: fundamentos técnicos e proposta de padronização This Final Course Project is situated within the context of the Fourth Industrial Revolution and the digitalization of power system projects, focusing on the Engineering Base PTD (EB) platform developed by AUCOTEC—a data-centric tool that integrates all phases of the lifecycle of transmission and distribution plants. Digital protection relays, classified as Intelligent Electronic Devices (IEDs), are critical components in Safety, Protection, Control, and Supervision (SPCS) projects. Currently, the modeling of these devices from the manufacturer Schweitzer Engineering Laboratories (SEL) in Engineering Base is performed manually, resulting in lack of standardization among created models, extended execution time, and increased risk of errors. The general objective of this work was to develop an application (macro) in Engineering Base PTD capable of automatically modeling SEL protection relays based on the input of the device's part number, thereby promoting agility, reliability, and standardization. To achieve this objective, the following specific goals were pursued: understanding the state of the art in digital protection relays; mapping the technical data available on SEL's official website; cataloging all protection relay models offered by the manufacturer; recording the part number variations corresponding to different input and output configurations; and developing the macro for automated modeling in the Engineering Base environment. Finally, a comparative analysis was conducted between the traditional manual process and the proposed automated process, evaluating parameters such as modeling time, reduction of manual errors, and the level of standardization achieved. The results demonstrate that the developed solution reduces the modeling time, commonly around 1 hour, to around 23 seconds, eliminates inconsistencies between projects, and minimizes human error, contributing to greater efficiency, traceability, and quality in SPCS projects carried out on the Engineering Base PTD platform Wed, 11 Feb 2026 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/2003 2026-02-11T00:00:00Z https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1910 Análise dos indicadores de qualidade de energia elétrica no IFPE Campus Garanhuns In this paper, an analysis is presented of the electric power quality at IFPE Garanhuns Campus, which has a specific load profile related to its academic purpose and, in parallel, a photovoltaic plant installed in its internal grid. To carry out the study, field measurements were taken that gathered data on load, voltage, power, harmonics, generation, power factor, and frequency. Analysis of these data enabled an assessment of power quality on the campus, the identification of limit violations with respect to current standards, and a detailed description of the operation of the electrical installations, including the photovoltaic plant. For the data analysis, Module 8 of the Procedures for the Distribution of Electric Energy (PRODIST) in the National Electric System, published by the National Electric Energy Agency (ANEEL), which addresses the quality of energy supply in distribution systems, was taken as a reference. The indicators of long-duration voltage variation, power factor, harmonic distortions, voltage imbalance, and frequency variation were analyzed. The data analysis revealed the presence of violations of the campus’s power-quality standards, including voltage variations, low power factor, and harmonic distortions. Therefore, the study demonstrated the importance of evaluating power quality in installations with distributed generation, as is the case at IFPE Garanhuns. The outcomes can serve as groundwork for implementing measures aimed at enhancing the campus electrical system, ensuring the quality of electric power supply. Furthermore, the study contributes to the advancement of knowledge in the field of power quality, especially in the context of educational institutions with distributed generation Wed, 18 Jun 2025 00:00:00 GMT https://repositorio.ifpe.edu.br/xmlui/handle/123456789/1910 2025-06-18T00:00:00Z