Results 1 to 10 of about 119 (107)
Forecast Model Update Based on a Real-Time Data Processing Lambda Architecture for Estimating Partial Discharges in Hydrogenerator. [PDF]
Sensors (Basel), 2020 The prediction of partial discharges in hydrogenerators depends on data collected by sensors and prediction models based on artificial intelligence. However, forecasting models are trained with a set of historical data that is not automatically updated ...
Pereira FH +7 more
europepmc +2 more sources
Practical Modal Analysis of a Prototyped Hydrogenerator [PDF]
Vibration, 2021 The vibration on the stator core of hydrogenerators caused by electromagnetic forces is an important factor affecting the reliability and long-lasting operation of a machine.
Allan de Barros +3 more
doaj +2 more sources
IEEE Access, 2020 Hydrogenerators are strategic assets for power utilities. Their reliability and availability can lead to significant benefits. For decades, monitoring and diagnosis of hydrogenerators have been at the core of maintenance strategies. A significant part of
Ryad Zemouri +2 more
exaly +3 more sources
Equipment for Predictive Maintenance in Hydrogenerators
AASRI Procedia, 2014 This paper presents an equipment for predictive maintenance in large hydrogenerators. This equipment uses techniques of digital signal processing of the information contained in the electrical variables involved in the operation of the generator. Basically, the current and voltage signals of the generator are monitored and applied the techniques of ...
Germano Lambert-Torres
exaly +2 more sources
The Methods of Three-Dimensional Modeling of the Hydrogenerator Thrust Bearing
Computation, 2022 In the presented scientific work, the basic design versions of the thrust bearings of Hydrogenerators are considered. The main causes of emergencies in the thrust bearing unit of a high-power Hydrogenerator are considered.
Oleksii Tretiak +4 more
doaj +3 more sources
AIR GAP CONTROL SYSTEM FOR HYDROGENERATORS
Приборы и методы измерений, 2017 In this paper, we report of the solving the actual problem of control the air gap in the hydrogenerators. The aim of the study was development of a computerized information-measuring system for measuring the air gap in the hydrogenator, which used two ...
I. O. Zaitsev +2 more
doaj +3 more sources
Transient Roebel Bar Force Calculation in Large Salient-Pole Synchronous Machines
IEEE Access, 2021 The radial and tangential force components acting on each sub-conductor of a Roebel bar in a large generator lead to mechanical vibration of the stator bars in the slot.
Marius Wenzel Meiswinkel +3 more
doaj +1 more source
Estimation of hydrogenerator rotor dynamic thermal margine [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 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 can be
Klasnić Ilija +4 more
doaj +1 more source
NTU "KhPI" Bulletin: Power and heat engineering processes and equipment, 2023 In the presented scientific work, the basic design versions of the thrust bearings of Hydrogenerators are considered. The main causes of emergencies in the thrust bearing unit of a high-power Hydrogenerator are considered. The main requirements for the operation of thrust bearings are submitted.
openaire +3 more sources
Efficiency Mapping and Weighted Average Efficiency for Large Hydrogenerators
IEEE Open Journal of Industry Applications, 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 ...
Edson da Costa Bortoni +4 more
doaj +1 more source