Results 51 to 60 of about 437 (152)
Practical Aspects Concerning the Digital Implementation of Complex Protection Functions for Hydrogenerators [PDF]
Journal of Electrical and Electronics Engineering, 2014 This paper shows how to implement several complex protection functions for synchronous hydrogenerators using PC-05/104 digital equipment. PC-05/104 also performs the monitoring and visualization of the voltages and currents rms values and phase shifts ...
PURCARU Dorina-Mioara +2 more
doaj
Electronics Letters, Volume 60, Issue 6, March 2024.The findings reveal that in the no‐load electromagnetic field calculation of tubular hydrogenerator, while a linear simplified definition method for the stator core material maintains high accuracy and efficiency, but the same approach for the rotor core material is unacceptable.
Jia‐xin Man +2 more
wiley +1 more source
The rotating field method applied to damper loss calculation in large hydrogenerators
, 2010 In this paper, we discuss key aspects of analytical rotating field models that can be used to estimate the damper losses in large hydrogenerators during steady load conditions.
U. Lundin +3 more
core +1 more source
Revista Científica de Ingeniería Energética, 2011 El presente trabajo aborda las fallas a monitorear, la selección de las variables y parámetros de estado dediagnóstico, el método de identificación de las fallas y el flujo de la información.Los resultados ...
Williamn J Torres Medina +2 more
doaj
Flexible combined grounding modes of large hydro-generators
Zhongguo dianliSingle-phase grounding fault is the most common fault causing insulation damage to generator stator windings. The grounding transformer high-resistance grounding mode widely used in China cannot address the problem of excessive grounding fault current ...
Xiuhan WU +8 more
doaj +1 more source
On Permeance Modeling of Large Hydrogenerators With Application to Voltage Harmonics Prediction
, 2010 In this paper, a permeance model that can be employed to estimate the no-load damper current loss and voltage waveform harmonics in large hydrogenerators is presented. The importance of modeling the damper magnetomotive force and inductances correctly is
Ranlöf, Martin, +2 more
core +1 more source
Localization of Partial Discharges in Hydrogenerators by Ozone Emission
EnergiesWe 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.
Victor Dmitriev +3 more
doaj +1 more source
Algae control for hydrogeneration canals [PDF]
, 1997 The purpose of this Cooperative Research and Development Agreement (CRADA) was to assess and develop control practices for nuisance algae growth in power canal that delivers water to hydro-generation facilities. This growth results in expenditures related not only to lost generation but also labor and materials costs associated with implementing ...
openaire +2 more sources
The Energy Transition’s Impact on the Accumulated Average Efficiency of Large Hydrogenerators
, 2021 The energy transition is aimed to take advantage of the operational flexibility of hydropower to extend the in- tegration of intermittent renewable sources.
Yannick Cyiza Karekezi (11581831) +2 more
core +1 more source
Hydrodynamic and thermal evaluation of fouling mitigation in hydrogenerators heat exchangers [PDF]
, 2011 Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.The effectiveness of a mitigation technology for undesired formation of mineral inlay (fouling) and biological material (
Braga, S.L. +4 more
core +1 more source