Luís Manuel Ramos de Oliveira
PhD Researcher
Luís Oliveira received the Electrical Engineering Diploma, the MSc degree in Electrical Engineering and the PhD degree in Electrical Engineering, from the University of Coimbra, Coimbra, Portugal, in 1995, 2001 and 2014, respectively. In 1996 he joined the University of Algarve, Portugal, where he is currently a Coordinating Professor. His research interests include modelling and simulation of power transformers, condition monitoring and diagnostics of power transformers, and protection systems.

PhD, Electrical Engineering, University of Coimbra, Coimbra, Portugal, 2014.
MSc, Systems and Automation, University of Coimbra, Coimbra, Portugal, 2001.
Licenciatura, Electrical Engineering, University of Coimbra, Coimbra, Portugal, 1996.
Cardoso, P. J. S.; Monteiro, J.; Cabrita, C.; Semião, J.; Cruz, D.; Pinto, N.; Ramos, C. M. Q; Oliveira, L. M. R.; Rodrigues, J. M. F.: "Monitoring, Predicting, and Optimizing Energy Consumptions: A Goal Toward Global Sustainability"; Research Anthology on Smart Grid and Microgrid Development, Information Resources Management Association (Ed.) (Editor), , 1409-1436 pp., IGI Global (9781668436660), Hershey, USA, 2022.
Pinto, N.; Cruz, D.; Monteiro, J.; Cabrita, C.; Semião, J.; Cardoso, P. J. S.; Oliveira, L. M. R.; Rodrigues, J. M. F.: "IoE-Based Control and Monitoring of Electrical Grids: A Smart Grid's Perspective"; Research Anthology on Smart Grid and Microgrid Development, Information Resources Management Association (Ed.) (Editor), , 843-868 pp., IGI Global (9781668436660), Hershey, USA, 2022.
Cardoso, P. J. S.; Monteiro, J.; Cabrita, C.; Semião, J.; Cruz, D.; Pinto, N.; Ramos, C. M. Q; Oliveira, L. M. R.; Rodrigues, J. M. F.: "Monitoring, Predicting, and Optimizing Energy Consumptions: A Goal Toward Global Sustainability"; Research Anthology on Clean Energy Management and Solutions, Information Resources Management Association (Ed.) (Editor), , 20-47 pp., IGI Global (9781799891529), Hershey, USA, 2021.
Cardoso, P. J. S.; Monteiro, J.; Cabrita, C.; Semião, J.; Cruz, D.; Pinto, N.; Ramos, C. M. Q; Oliveira, L. M. R.; Rodrigues, J. M. F.: "Monitoring, Predicting, and Optimizing Energy Consumptions: A Goal Toward Global Sustainability"; Smart Systems Design, Applications, and Challenges, J. M. Rodrigues, P. Cardoso, J. Monteiro, and C. Ramos (Editor), , 80-107 pp., IGI Global (9781799821120), Hershey, USA, 2020.
Pinto, N.; Cruz, D.; Monteiro, J.; Cabrita, C.; Semião, J.; Cardoso, P. J. S.; Oliveira, L. M. R.; Rodrigues, J. M. F.: "IoE-Based Control and Monitoring of Electrical Grids: A Smart Grid's Perspective"; Harnessing the Internet of Everything (IoE) for Accelerated Innovation Opportunities, Pedro J. S. Cardoso, Jânio Monteiro, Jorge Semião and João M. F. Rodrigues (Editor), , 57-82 pp., IGI Global (978-1-5225-7332-6), Hershey, PA, USA, 2019.
Cruz, D.; Pinto, N.; Monteiro, J.; Cardoso, P. J. S.; Cabrita, C.; Semião, J.; Oliveira, L. M. R.; Rodrigues, J. M. F.: "Development of an Energy Management System for the Charge Scheduling of Plug-in Electric Vehicles"; Universal Access in Human-Computer Interaction. Virtual, Augmented, and Intelligent Environments, Antona M., Stephanidis C. (Editor), , 214-225 pp., Springer, (978-3-319-92051-1), , , 2018.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Modeling and Characterization of Leakage Inductances for Transformer Winding Fault Studies"; Technological Innovation for the Internet of Things, Luís M. Camarinha-Matos, Slavisa Tomic and Paulo Graça (Editor), , 423-430 pp., Springer Berlin Heidelberg (978-3-642-37290-2), Berlin, Germany, 2013.
Cardoso, A. J. M.; Oliveira, L. M. R.: "Power Transformers Fault Diagnostics by Park’s Vector Approach"; Transformers: Analysis, Design, and Measurement, Xose M. López-Fernández, H. Bülent Ertan and Janusz Turowski (Editor), , 287-310 pp., CRC Press (978-1-466-50824-8), Boca Raton, USA, 2012.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Power Transformers Differential Protection Using the p-q Power Theory"; Technological Innovation for Value Creation, Luís M. Camarinha-Matos, Ehsan Shahamatnia and Gonçalo Nunes (Editor), , 283-290 pp., Springer Berlin Heidelberg (978-3-642-28254-6), Berlin, Germany, 2012.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Comparing Power Transformer Turn-to-Turn Faults Protection Methods: Negative Sequence Component Versus Space Vector Algorithms"; IEEE Transactions on Industry Applications, Vol. 53, No. 3, pp. 2817-2825, May / June, 2017.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Leakage Inductances Calculation for Power Transformers Interturn Fault Studies"; IEEE Transactions on Power Delivery, Vol. 30, No. 3, pp. 1213-1220, June, 2015.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Extended Park’s Vector Approach-Based Differential Protection of Three-Phase Power Transformers"; IET Electric Power Applications, Vol. 6, No. 8, pp. 463-472, September, 2012.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Application of Park’s Power Components to the Differential Protection of Three-Phase Transformers"; Electric Power Systems Research, Vol. 83, No. 1, pp. 203-211, February, 2012.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Power Transformers Winding Fault Diagnosis by the On-Load Exciting Current Extended Park’s Vector Approach"; Electric Power Systems Research, Vol. 81, No. 6, pp. 1206-1214, June, 2011.
Oliveira, L. M. R.; Cardoso, A. J. M.: "A Permeance-Based Transformer Model and Its Application to Winding Interturn Arcing Fault Studies"; IEEE Transactions on Power Delivery, Vol. 25, No. 3, pp. 1589-1598, July, 2010.
Cardoso, A. J. M.; Oliveira, L. M. R.: "Condition Monitoring and Diagnostics of Power Transformers"; International Journal of COMADEM, Vol. 2, No. 3, pp. 5-11, July, 1999.
Cardoso, A. J. M.; Oliveira, L. M. R.; Gameiro, N. S.; Veloso, P. M. M. G.: "Diagnóstico de Avarias em Transformadores Trifásicos"; Anais da Engenharia e Tecnologia Electrotécnica, Vol. , No. 6, pp. 9-12, March, 1998.
Honrubia-Escribano, A.; Oliveira, L. M. R.; Cañas-Carretón, M.; Alguacil, N.; Arroyo, J. M.; Contreras, J.; García-Bertrand, R.; Zárate-Miñano, R.; Ruiz-Peinado, M. C.; Martín-Martínez, S.; Villena-Ruiz, R.; Artigao, E.: "Learning Power System Simulation in an International Framework"; International Conference of Education, Research and Innovation, Seville, Spain, pp. 4707-4716, November, 2022.
Del Pino, J.; Ríos, J.; Enrique, J. M.; Ruiz, D.; Andújar, J. M.; Semião, J.; Oliveira, L. M. R.: "Tratamiento de Medidas Altamente Ruidosas para su Empleo en un Sistema de Control. Filtros de Kalman"; Jornadas ScienCity, Huelva, Spain, pp. 2-3, November, 2022.
Ríos, J.; Del Pino, J.; Barragán, A. J.; Andujar, J. M.; Semião, J.; Oliveira, L. M. R.: "Aplicación del Filtro de Kalman en el Procesado de Medidas muy Ruidosas, un Caso Práctico: Banco de Potencia para Motocicletas con Capacidad de Análisis Aerodinâmico"; Simposio CEA de Control Inteligente, León, Spain, pp. 47-50, June, 2022.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Comparing Power Transformer Turn-to-Turn Faults Protection Methods: Negative Sequence Component versus Space Vector Algorithms"; IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, Guarda, Portugal, pp. 289-295, September, 2015.
Oliveira, L. M. R.; Cardoso, A. J. M.: "An EPVA-Based Strategy for Power Transformers Differential Protection"; Advanced Research Workshop on Transformers, Santiago Compostela, Spain, pp. 407-412, October, 2010.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Power Transformers Behaviour Under the Occurrence of Inrush Currents and Turn-to-Turn Winding Insulation Faults"; International Conference on Electrical Machines, Rome, Italy, pp. 1-7, September, 2010.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Intermittent Turn-to-Turn Winding Faults Diagnosis in Power Transformers by the On-Load Exciting Current Park's Vector Approach"; International Conference on Electrical Machines, Vilamoura, Portugal, pp. 1-6, September, 2008.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Detection of Transformer Intermittent Winding Faults by the On-Load Exciting Current Park's Vector Approach"; International Congress on Condition Monitoring and Diagnostic Engineering Management, Faro, Portugal, pp. 263-272, June, 2007.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Incipient Turn-To-Turn Winding Fault Diagnosis of Power Transformers by the On-Load Exciting Current Extended Park’s Vector Approach"; Advanced Research Workshop on Transformers, Vigo, Spain, pp. 134-139, October, 2004.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Parameters determination for the coupled electromagnetic transformer model, with particular reference to winding faults studies"; Congresso Luso Espanhol de Engenharia Electrotécnica, Vilamoura, Portugal, pp. 6.333-6.33, July, 2003.
Oliveira, L. M. R.; Cardoso, A. J. M.; Cruz, S. M. A.: "Transformers On-Load Exciting Current Park’s Vector Approach as a Tool for Winding Faults Diagnostics"; International Conference on Electrical Machines, Brugge, Belgium, pp. 1-6, August, 2002.
Oliveira, L. M. R.; Cardoso, A. J. M.: "On-Line Diagnostics of Transformer Winding Insulation Failures, by Park’s Vector Approach"; International Electrical Insulation Conference, Berlin, Germany, pp. 16-21, June, 2002.
Oliveira, L. M. R.; Cardoso, A. J. M.; Cruz, S. M. A.: "A Coupled Electromagnetic Transformer Model for the Analysis of Winding Inter-Turn Short-Circuits"; IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, Grado, Italy, pp. 367-372, September, 2001.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Three-Phase, Three-Limb, Steady-State Transformer Model: The Case of a Ynzn Connection"; IASTED International Conference on Power and Energy Systems, Marbell, Spain, pp. 467-472, September, 2000.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Modelling and Simulation of Three-Phase Power Transformers"; International Conference ELECTRIMACS, Lisboa, Portugal, pp. 257-262, September, 1999.
Cardoso, A. J. M.; Oliveira, L. M. R.: "Condition Monitoring and Diagnostics of Power Transformers"; International Congress on Condition Monitoring and Diagnostic Engineering Management, Launceston, Australia, pp. 591-599, December, 1998.
Oliveira, L. M. R.; Cardoso, A. J. M.: "Diagnóstico de Avarias de Transformadores Trifásicos em Serviço Através da Análise do Vector de Park das Correntes de Excitação em Carga"; Congresso Nacional de Manutenção, Viseu, Portugal, pp. 853-866, April, 2002.
Santos, R. C. M. J., "Differential Protection of Power Transformers for Wind Farms (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2022.
Alves, M. S. P. F., "Multi-technique Maintenance in Electrical, Mechanical and Climatisation Installations (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2022.
Bento, J. F. B., "Using Test Coils to Analyse the Homopolar Flux in Three-Phase Transformers (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2021.
Silva, V. M. C. S., "Energy Audit to Detect Abnormal Consumption in a Fastener Manufacturing Unit (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2021.
Serpa, M. T. M. D., "Protection of Electricity Storage Systems (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2020.
Botelho, N. M. C., "Comparative Study of the 1x25 kV vs 2x25 kV Alternating Current Catenary Feeding System in the National Railway Transmission Network (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2020.
Tavares, V. S. C., "Impact of Renewable Production on the Electricity System of Santiago Island (Cape Verde) (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2020.
Rodrigues, J. P. A., "Detection of Transformer Winding Deformations through Leakage Flow Analysis: FEM Analysis", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2019.
Custódio, F., "Analysis of the Influence of Transient Excitation Overcurrents on the Differential Protection of Transformers (in Portuguese)", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2018.
Gago, N. J. V., "Reducing Current Harmonic Distortion by Using Paralel Active Filters: Analysis for Several Non-Linear Loads", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2015.
Rafael, F. M., "Numerical Differential Relay for Power Transformers Protection", Supervisor: Oliveira, L. M. R., University of Algarve, Portugal, 2015.
Oliveira, L. M. R., "Development of Fault Detection Methods and Protection Algorithms for Application in Continuous Monitoring Systems of Three-Phase Power Transformers (in Portuguese)", Supervisor: Cardoso, A. J. M., University of Coimbra, Portugal, 2014.
Best paper award (2013)
Best paper award (field of Energy), 4th IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2013.