2022-11-172022-11-172020-07-29LEITE, R. R. Dispositivo de análise e monitoramento on-Line de transformadores de potência Imersos em óleo isolante: corrente elétrica, temperatura e umidade. 2020. 90 f. Dissertação (Mestrado em Engenharia Elétrica e da Computação) - Universidade Federal de Goiás, Goiânia, 2020.http://repositorio.bc.ufg.br/tede/handle/tede/12445This work deals with the development of a device capable of monitoring real-time power transformers immersed in isolated mineral oil, proving a historical monitoring data analysis solution and a decision-making tool integrated in a cloud supervisory. This is a demand from the power sector, which needs accurate and low cost solutions due to the large number of power system transformers and the strategic importance of this asset. The monitored variables are: temperature and relative humidity of the climate, temperature and water activity (humidity), and currents on the primary and secondary side. Every configuration of device use a application for mobile devices(smartphones, tablets e etc), eliminating the use of displays and buttons. It is tolerant to power and communication failures, presents different ways of connecting to the Internet. The results presented in this work were satisfactory with validation in the laboratory, providing two applications of monitoring of the powertransformer insulation system, regarding: a) the state of the equipment in operation; b) in the drying process of the active part in the maintenance procedures. This work led to the registration of two software and a patent deposit.Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Computação em nuvemInternet das coisasMonitoramento de corrente de transformadores de potênciaMonitoramento on-lineMonitoramento de umidade e temperatura do óleo de transformadores de potênciaSupervisório em nuvemTransformadores de potênciaCloud computingCloud supervisoryInternet of everythingsOnline monitoringPower transformersPower transformers current monitoringPower transformer oil humidity and temperature monitoringENGENHARIAS::ENGENHARIA ELETRICA::SISTEMAS ELETRICOS DE POTENCIADissertação