Results 141 to 150 of about 1,744 (183)

Shaft Current Measurement and Failure Prediction in Hydrogenerators

IEEE transactions on industry applications
Circulating currents in the bearings of electrical machines are known to cause electrical discharge or local overheat that could lead to a bearing damage.
J. Pedneault-Desroches, A. Merkhouf, K. Al-Haddad   +2 more
semanticscholar   +1 more source

Hydrogenerators refurbishment within Romanian power system

2011 IEEE 3rd International Symposium on Exploitation of Renewable Energy Sources (EXPRES), 2011
The power quality is one of the main interests within the power generation, delivery and transmission domains. In order to have a higher quality for the power produced in synchronous generators (mainly located in hydro power plants), using an adequate excitation system is essential.
Flaviu Mihai Frigura-Iliasa, Doru Vatau, Gheorghe Vuc, Marian Greconici, Adrian Vartosu   +4 more
openaire   +1 more source

Unleashing Artificial Intelligence: Monitoring and Diagnosing Large Hydrogenerators

IEEE Power and Energy Magazine
Large hydrogenerators play a critical role in the generation of clean and sustainable electricity from hydropower sources. To ensure optimal performance and availability and to prevent unexpected failures, meticulous monitoring is essential. This article
H. Bechara, Rony Ibrahim, Antoine Tahan, R. Zemouri, A. Merkhouf, B. Kedjar, K. Al-Haddad   +6 more
semanticscholar   +1 more source

Effect of Types and Orders of Electromagnetic Field Finite Element Meshes on Power Communication Harmonic Parameters Calculation Results of Tubular Hydrogenerators

China Communications
In generator design field, waveform total harmonic distortion (THD) and telephone harmonic factor (THF) are parameters commonly used to measure the impact of generator no-load voltage harmonics on the power communication quality.
Zhen‐nan Fan, Chen Jie, Zhi-Ting Zhou, Yang Yong   +3 more
semanticscholar   +1 more source

Rotor Fault Diagnosis of Large Hydrogenerators Using Vibration Data and VAE-Desirability Function

Annual Conference of the IEEE Industrial Electronics Society
In electrical equipment maintenance, precise diagnosis is critical for dependability and efficiency. Variational Autoencoder (VAE) approaches show promise for fault classification but encounter hurdles due to their non-deterministic nature, which results
Rony Ibrahim, R. Zemouri, Antoine Tahan, B. Kedjar, Kamal Al-Haddad, A. Merkhouf   +5 more
semanticscholar   +1 more source

Analysis on Thermal Behavior of Large Hydrogenerators Operating With Continuous Overloads

IEEE transactions on industry applications, 2020
Large capacity hydrogenerators are operated at overloads during the period of excess water flow in the river or frequency support to the grid at peak hours. The extensive conditions may extend to six weeks with 20% overload for a typical hydropower plant
Carunaiselvane Carounagarane, T. Chelliah, D. Khare   +2 more
semanticscholar   +1 more source

Upgrading of hydrogenerator excitation systems

2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492), 2002
Whereas hydroelectric stations are continuing to deliver low-cost energy, in some cases after 75 years' service, certain peripherals of the generation units become obsolete after thirty years. Excitation systems in particular have required partial or total replacement, to provide: more stringent voltage regulation, enhanced stability of the sytems ...
openaire   +1 more source

Quantification of Visual Inspection Results to be Integrated as a Diagnostic Tool for Hydrogenerators

Electrical Insulation Conference
Visual inspection of generators is a widely used and industry-proven diagnostic technique. It can detect or confirm many symptoms or anomalies related to the generator failure mechanisms and complements conventional diagnostic tools to provide a more ...
Mélanie Lévesque, A. Merkhouf, J. Pedneault-Desroches, Maxime Casavant   +3 more
semanticscholar   +1 more source

Maximum-Slew-Rate Control for Hydrogenerators

Journal of Engineering for Gas Turbines and Power, 1987
Traditionally, speed control of hydrogenerators has been implemented by analog proportional-plus-integral control of speed error. With digital controllers, nonlinear, adaptive control strategies may be implemented to achieve improved systems response. This paper develops a control scheme which responds to perturbations by moving wicket gates at their ...
J. Jaeger, L. Wozniak
openaire   +1 more source

Assessment of Stator Winding Insulation Condition in Hydrogenerators Using Partial Discharge Diagnostics

2026 ElCon Conference of Young Researchers in Electrical Engineering, Automation & Control Systems (ElCon-EE)
Technical diagnostics play a crucial role in ensuring the optimal operation of hydroelectric generating units by detecting potential faults at an early stage and maintaining their reliability. The stator winding insulation undergoes degradation under the
S. Sultonzoda, Jamshed B. Rahimzoda, Kh Usmonov, Ilhom H. Mahmudov   +3 more
semanticscholar   +1 more source