Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Edson G. Costa"'
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 156, Iss , Pp 109744- (2024)
Computer simulations are currently one of the most used methods on transformer’s short circuit analysis. For them to be effective, an accurate characterization of the transformer core and geometric representation of windings is essential. Hence, th
Externí odkaz:
https://doaj.org/article/4d88d277b0c848c8a63b6eea0ab6013c
Autor:
Ronimack T. Souza, George R. S. Lira, Edson G. Costa, Adriano C. Oliveira, Antonio F. Leite Neto
Publikováno v:
Energies, Vol 17, Iss 8, p 1869 (2024)
This paper presents a methodology capable of measuring, processing, and extracting contact resistance parameters that enable the identification of the contact degradation level inside arc extinction chambers in medium- and high-voltage circuit breake
Externí odkaz:
https://doaj.org/article/fc2d6ec0b5e74d418b5f1edcf6218a9b
Autor:
Arthur F. Andrade, Edson G. Costa, Josué M.B. Fernandes, Helem M.M. Alves, Cícero R.C. Amorim Filho
Publikováno v:
High Voltage (2019)
In this article, an analysis of heat transfer in a porcelain-housed ZnO surge arrester is presented. Due to the fact that ZnO-based surge arresters are key components for protection and reliability of electrical systems, it is necessary to seek techn
Externí odkaz:
https://doaj.org/article/04d861affbc8400a987f819bde22b851
Autor:
Arthur F. Andrade, Edson G. Costa, Filipe L.M. Andrade, Clarice S.H. Soares, George R.S. Lira
Publikováno v:
Energies, Vol 12, Iss 16, p 3075 (2019)
International standards prescribe overvoltage tests to evaluate the insulating material performance of high-voltage cables. However, it is difficult to manage the electric fields at the cable ends when laboratory measurements are carried out because
Externí odkaz:
https://doaj.org/article/e6618db40e2548b69b2f58a96d06c3a5
Autor:
Luiz A. M. M. Nobrega, Edson G. Costa, Alexandre J. R. Serres, George V. R. Xavier, Marcus V. D. Aquino
Publikováno v:
Sensors, Vol 19, Iss 15, p 3435 (2019)
This paper presents an algorithm for the localisation of partial discharge (PD) sources in power transformers based on the electromagnetic waves radiated by a PD pulse. The proposed algorithm is more accurate than existing methods, since it considers
Externí odkaz:
https://doaj.org/article/ff226558ec9a4edd827e326dfea1a127
Autor:
Luiz A. M. M. Nobrega, George V. R. Xavier, Marcus V. D. Aquino, Alexandre J. R. Serres, Camila C. R. Albuquerque, Edson G. Costa
Publikováno v:
Sensors, Vol 19, Iss 3, p 653 (2019)
In this paper, the design and development of a bio-inspired UHF sensor for partial discharge detection in power transformers is presented. The UHF sensor was developed for external use in dielectric windows of power transformers. For this purpose, a
Externí odkaz:
https://doaj.org/article/95f85090cf784dd5865091bd9af5804d