Zobrazeno 1 - 10
of 282
pro vyhledávání: '"Hydrogenerator"'
Publikováno v:
Energies, Vol 17, Iss 13, p 3173 (2024)
We suggest a new method of localization of partial discharges in high-power electrical systems. Ozone in a hydrogenerator is produced by chemical reactions induced by partial discharges in the stator region. The transport of ozone in an operating hyd
Externí odkaz:
https://doaj.org/article/71c64bbd10494ba2898063dc281ef338
Autor:
Rodrigo M. S. de Oliveira, Gustavo G. Girotto, Licinius D. S. de Alcantara, Nathan M. Lopes, Victor Dmitriev
Publikováno v:
Energies, Vol 16, Iss 24, p 8072 (2023)
In this paper, a three-dimensional turbulent fluid dynamics numerical model of a 311 MVA full hydroelectric power plant unit is made, using the finite element method, to study and understand the ozone transport mechanisms inside the enclosured electr
Externí odkaz:
https://doaj.org/article/b6ff2310afc848b296fa906acdef094a
Publikováno v:
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", Vol 2022, Iss 32, Pp 101-111 (2022)
Field winding temperature of the synchronous generator is one of limiting factors shaping generator PQ capability curve. Therefore of great operational importance is to have information about this temperature estimated with the utmost accuracy. It ca
Externí odkaz:
https://doaj.org/article/f18e0007aa594ff8a5e06d91f2b07aa3
Autor:
Han Jichao, Sun Yutian, Zheng Ping, Qi Haiming, Dong Jiechen, Liu Yufei, Zhang Chunli, Ge Baojun, Li Weili
Publikováno v:
IEEE Access, Vol 10, Pp 3252-3262 (2022)
Ventilation cooling design is one of the key technologies during the design of large hydrogenerator. With the increase of hydrogenerator capacity, the overheating problem of rotor region become more and more serious. In this paper, a 250 MW hydrogene
Externí odkaz:
https://doaj.org/article/09093fb8966a4d91b3a8f305ed28dd20
Autor:
В.О. Березниченко, О.Є. Підчібій
Publikováno v:
Праці Інституту електродинаміки Національної академії наук України, Iss 59, Pp 93-98 (2021)
The paper presents results of analysis of the influence of the thickness of the dielectric substrate of a capacitive beating sensor, the electrodes of which are made of foil dielectric type FR4, on the transformation function of the sensor by methods
Externí odkaz:
https://doaj.org/article/47a8e13f045c4f8dbd6ec2ef38df69f2
Autor:
Eugeny S. Yushin
Publikováno v:
RUDN Journal of Engineering Research, Vol 22, Iss 1, Pp 100-112 (2021)
Rational indicators for the development of oil and gas fields are related to the systemic maintenance of a given level of perfection of formation opening in bottomhole zones of producing or injection wells. This need arises with the colmatation of th
Externí odkaz:
https://doaj.org/article/53f1645c00dd4ef490885246fda07d4f
Akademický článek
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Autor:
Oleksii Tretiak, Dmitriy Kritskiy, Igor Kobzar, Mariia Arefieva, Volodymyr Selevko, Dmytro Brega, Kateryna Maiorova, Iryna Tretiak
Publikováno v:
Computation, Vol 11, Iss 3, p 60 (2023)
In this article, the main causes of vibration in the thrust bearing of hydrogenerator motors rated 320 MW are considered. The main types of internal and surface defects that appear on the working surface of the thrust bearing disc during long-term op
Externí odkaz:
https://doaj.org/article/c5d0156196f841b1b0a3292b8c85078b
Publikováno v:
IEEE Access, Vol 9, Pp 120001-120009 (2021)
Thermal management is often considered a bottleneck in the pursuit of the next generation hydrogenerator in the electric power system. Overheating of the complex rotor parts has become one of the main problems affecting safe and stable hydrogenerator
Externí odkaz:
https://doaj.org/article/9e2517fe8cfd4f18903dd485e42a1f94
Autor:
Edson da Costa Bortoni, Roberto Teixeira Siniscalchi, Silvio Vaschetto, Mostafa Ahmadi Darmani, Andrea Cavagnino
Publikováno v:
IEEE Open Journal of Industry Applications, Vol 2, Pp 11-20 (2021)
This paper presents the concept of efficiency mapping for large synchronous hydrogenerators, which are useful for evaluating hydropower generation performance vis-à-vis interconnected intermittent generation to machine efficiency-oriented design. Te
Externí odkaz:
https://doaj.org/article/7378dd24408c4488aa48ba3e90fa2aca