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Metodologia para parametrização da função de subtensão utilizada em geradores distribuídos
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2022-09-02)
One of the main concerns when sizing protection systems in distribution networks with
distributed generation connection is to ensure that islanding of these plants does not
occur. For this, several protection techniques ...
Análise do impacto de sistemas de recarga lenta de veículos elétricos em redes de distribuição secundária
(Universidade Federal de Santa MariaBrasilEngenharia ElétricaUFSMPrograma de Pós-Graduação em Engenharia ElétricaCentro de Tecnologia, 2021-02-18)
This work presents a contextualization about electric vehicles, a technology that is gaining significant
space around the world. Much because of the concern to reduce the emission of pollutants such as CO2,
and in parallel ...
Development of a microgrid protection laboratory experiment for the study of overcurrent and undervoltage functions
(IEEE, 2017)
Today, power systems face new challenges in different fields, such as economic, social, environmental and technical. In the technical field, a number of issues related to protection ...
Utilização da transformada de wavelet para detecção de variações anormais de tensão em sistemas elétricos com geração distribuída
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Elétrica, 2016)
Inclusão de proteção contra colapso de tensão de sistemas de potência em relês de subtensãoInclusion of protection against power system voltage collapse in under-voltage relays
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em Engenharia ElétricaEngenhariasUFU, 2016)
Adaptive Protection System for Microgrids Based on a Robust Optimization Strategy
(2018)
The development of a proper protection system is essential for the secure and reliable operation of microgrids. In this paper, a novel adaptive protection system for microgrids is presented. The protection scheme is based ...
Acionamento e proteção de motor de indução trifásico via microcontrolador com leitura de tensão por meio de dispositivo optoacoplador
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilEngenharia ElétricaUTFPR, 2016-06-08)
The three-phase induction motors are widely used in the industry, this fact makes possible to claim that improvements in the protection system, and the increasing of the drive system reliability of these engines are highly ...
Teste de hipóteses sobre o espectro de frequência, aplicado na manutenção preditiva de motores de indução
(Universidade Federal de Minas GeraisUFMG, 2008-08-21)
The goal of this project is to improve techniques and develop a predictive maintenance tool for the diagnosis of electrical machines. Based on the nonintrusive Motor Current Signature Analysis MCSA approach for broken ...
Power flow for primary distribution networks considering uncertainty in demand and user connection
(Elsevier B.V., 2012-12-01)
This paper presents a method for calculating the power flow in distribution networks considering uncertainties in the distribution system. Active and reactive power are used as uncertain variables and probabilistically ...