Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Mohamed A. Izzularab"'
Publikováno v:
IEEE Access, Vol 10, Pp 43129-43142 (2022)
A single-end based fault location method is proposed for VSC (Voltage Sourced Converter) HVDC (High Voltage Direct Current) transmission systems. With the proposed method, there is no need for communication system to collect data from different locat
Externí odkaz:
https://doaj.org/article/9f343c23c1174f2ea2845c6cf9d787d7
Publikováno v:
IET Science, Measurement & Technology, Vol 15, Iss 1, Pp 77-84 (2021)
Abstract Oil‐paper composite is the main insulation system in oil‐filled transformers. In recent years, the use of nanotechnology to improve the electrical and thermal properties of transformer oil has become a field of research interest. In this
Externí odkaz:
https://doaj.org/article/87d42449408a46ba911fcdca11d97774
Autor:
Mohamed E. Ibrahim, Samy M. El‐Behiry, A. A. Hussien, Mohamed A. Izzularab, Amr M. Abd‐Elhady
Publikováno v:
IET Generation, Transmission & Distribution, Vol 15, Iss 2, Pp 339-346 (2021)
Abstract Effect of adding nanofillers on transformer oil breakdown voltage and its thermal performance finds a great interest from researchers and scientists. The impact of oil circulation considering oil forced cooling method on nanoparticles stabil
Externí odkaz:
https://doaj.org/article/5631a31c0ffa4b1794da16e3a9288ab2
Publikováno v:
IEEE Access, Vol 8, Pp 181028-181035 (2020)
Oil-based nanofluids have been indicated to enhance the breakdown strength and dielectric behavior of mineral oil. However, partial discharge (PD) development in these new materials has not yet been clarified. This study aims to deeply investigate PD
Externí odkaz:
https://doaj.org/article/f0568f99cf9040c0992c07f3bc21a51d
Publikováno v:
IEEE Access, Vol 8, Pp 227222-227231 (2020)
Creeping flashover (surface discharge) at oil-pressboard interface is considered a serious failure of the insulation system in power transformers. In this paper, creeping flashover voltage at oil-pressboard interface using the concept of nanofluids i
Externí odkaz:
https://doaj.org/article/0fac73a96a08406591146bb14b921ae8
Autor:
Mahmoud M. Elgamasy, Abdel-Maksoud I. Taalab, Tamer A. Kawady, Mohamed A. Izzularab, Nagy I. Elkalashy
Publikováno v:
Journal of Modern Power Systems and Clean Energy, Vol 8, Iss 5, Pp 991-1004 (2020)
In this paper, a fast fault detection scheme for voltage source converter based high-voltage direct current (VSC-HVDC) transmission systems is proposed. Based on Bergeron model equations, the remote terminal voltage of an adopted transmission system
Externí odkaz:
https://doaj.org/article/8a3c1ec950de43528f1f53ff9206a612
Autor:
Mohamed E. Ibrahim, Elsayed Tag Eldin, Safaa F. Elzoghby, Mohamed A. Izzularab, Amr M. Abd-Elhady
Publikováno v:
Energies, Vol 15, Iss 13, p 4860 (2022)
In this paper, the role of the accumulated surface charge on the surfaces of nanoparticles on breakdown strength for liquid and solid dielectrics is presented. The breakdown strengths of a nanofilled liquid dielectric and a solid dielectric are evalu
Externí odkaz:
https://doaj.org/article/ffe392d57fca4e31b2649905bddcb7a3
Publikováno v:
Yanbu Journal of Engineering and Science, Vol 17, Iss 1 (2019)
Power transformers may be subjected to switching surges or fault events that may be responsible for internal transformer resonance. This paper deals with two scenarios of cable-transformer resonance. The first resonance case is due to single-phase ea
Externí odkaz:
https://doaj.org/article/7161fcbe64e94d349e021ded9cebf636
Publikováno v:
Electrical Engineering. 105:1669-1681
In this study, the dielectric properties of unfilled as well as nanofilled polystyrene-silicone rubber blends are evaluated. Accordingly, the preparation of polystyrene-silicone rubber blends is carried out considering three different concentrations
Publikováno v:
Electrical Engineering. 105:953-964