Results 121 to 130 of about 1,744 (183)
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Evaluation of transfer learning approaches for partial discharge classification in hydrogenerators
Workshop Communication Networks and Power Systems, 2022Severe deterioration in the insulation system can interrupt the operation of high voltage electrical machines. Concerning hydrogenerators, unexpected interruptions result in important losses to both energy companies and consumers.
Frederico H. R. Lopes +3 more
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Hydrogenerator insulation maintenance practices
1983 EIC 6th Electrical/Electronical Insulation Conference, 1983Reliable generation requires a comprehensive preventive maintenance program to locate defects and arrest deterioration on electrical generating equipment. This paper outlines one utility's preventive maintenance and investigative practices on hydro-generator insulation systems and describes experience on some of the major repairs and overhauls.
G. G. McCrae, G. Dang
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International Conference on Electrical Machines, 2022
This paper presents the potential and the sensitivity of the Variational Autoencoder (VAE) technique in early detection of a failure mode of large hydrogenerator.
R. Ibrahim +6 more
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This paper presents the potential and the sensitivity of the Variational Autoencoder (VAE) technique in early detection of a failure mode of large hydrogenerator.
R. Ibrahim +6 more
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New Design of Hydrogenerator Poles.
RE&PQJ, 2023HydrogeneratorThe excess of reactive power generated by power transmission lines is the reason for impermissible increase of voltage at the terminals of the length power transmission lines for consumers. One of the alternative decisions for this problem could become at the hydropower station hydrogenerators, specially designed or reconstructed for ...
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An Overview of Circulating Currents in Salient-Pole Synchronous Hydrogenerators
International Conference on Electrical Machines, 2022The competition among large hydrogenerators to achieve the highest efficiencies leads to increased interest in circulating current losses in salient-pole synchronous machines.
F. Maurer, J. Nøland
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IEEE transactions on industry applications, 2021
Signal processing plays a crucial role in addressing failures in electrical machines. Experimental data are never perfect due to the intrusion of undesirable fluctuations unrelated to the investigated phenomenon, namely so-called noise.
H. Ehya, A. Nysveen, Tarjei N. Skreien
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Signal processing plays a crucial role in addressing failures in electrical machines. Experimental data are never perfect due to the intrusion of undesirable fluctuations unrelated to the investigated phenomenon, namely so-called noise.
H. Ehya, A. Nysveen, Tarjei N. Skreien
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Output Error Identification of Hydrogenerator Conduit Dynamics
IEEE Power Engineering Review, 1989Two output error model reference adaptive identifiers are considered for estimating the parameters in a reduced-order gate position to pressure model for the hydrogenerator. Gradient and sensitivity function identifiers are discussed for hydroelectric applications, and connections are made between their structural differences and relative performance ...
M.A. Vogt, L. Wozniak, T.R. Whittemore
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IEEE transactions on industry applications
In this paper, the authors present an Artificial Intelligence (AI) based Variational AutoEncoder (VAE) technique for detecting rotor faults in a large hydrogenerator.
Rony Ibrahim +5 more
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In this paper, the authors present an Artificial Intelligence (AI) based Variational AutoEncoder (VAE) technique for detecting rotor faults in a large hydrogenerator.
Rony Ibrahim +5 more
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Mechanical behavior of hydrogenerator endwindings
IEEE International Electric Machines and Drives Conference. IEMDC'99. Proceedings (Cat. No.99EX272), 2003This paper presents experimental investigations on hydrogenerator endwinding vibrations and temperatures. In steady-state operation, links between machine load, winding mechanical characteristics, and temperature are discussed. Viscoelastic properties of coil composite sections are proved.
A. Jarosz +4 more
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Proceedings of the 12th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.04CH37521), 2004
The extended testing of hydrogenerator (rated 35 MVA) was made because the generators working age expired and it was going to be replaced with new one. This was the perfect opportunity to do some specific and not usual testing. The complicated testing plan was designed in order to enable recording as much relevant data as possible (electrical ...
Z. Zebic, Z. Maljkovic, M. Pavlica
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The extended testing of hydrogenerator (rated 35 MVA) was made because the generators working age expired and it was going to be replaced with new one. This was the perfect opportunity to do some specific and not usual testing. The complicated testing plan was designed in order to enable recording as much relevant data as possible (electrical ...
Z. Zebic, Z. Maljkovic, M. Pavlica
openaire +1 more source