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Characterization of the effects of ingested bodies on the rotor–stator interaction of hydraulic turbines
(2021-10-14)
Article.
Accés obert
Article.
Accés obert
Runner and distributor blockages in hydraulic turbines occur due to the ingestion of external bodies such as rocks or logs. These obstructions can change the amplitude and uniformity of the pressure pulsations in the ...
Detection of hydraulic phenomena in francis turbines with different sensors
(Multidisciplinary Digital Publishing Institute (MDPI), 2019-09-19)
Article.
Accés obert
Article.
Accés obert
Nowadays, hydropower is demanded to provide flexibility and fast response into the electrical grid in order to compensate the non-constant electricity generation of other renewable sources. Hydraulic turbines are therefore ...
Presa de Caruachi. Estudio del comportmiento hidráulico de las compuertas de los conductos de desvío
(2002-07)
Article.
Accés obert
Article.
Accés obert
Se presenta el estudio desarrollado en el Laboratorio de Modelos Reducidos del Dpto. de Ing. Hidráulica, Marítima y Ambiental de la UPC, para el análisis del comportamiento hidráulico de las compuertas a utilizar en la ...
Análisis de las vibraciones y fluctuaciones de presión en una bomba turbina
(1992-03)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
En este artículo se describe el análisis de las mediciones de presión no estacionaria y vibraciones en una bomba-turbina a fin de identificar el origen de las vibraciones en una estructura próxima a la central. Una excitación ...
Dynamic model for axial motion of horizontal pelton turbine and validation in actual failure case
(2020-01-01)
Article.
Accés obert
Article.
Accés obert
Pelton turbines are important machines for power generation from a renewable energy source such as water. For power rates below 20 MW, the rotor of Pelton turbines is usually in horizontal position. Considering ideal ...
Failure investigation of a Kaplan turbine blade
(Elsevier, 2019-03-01)
Article.
Accés obert
Article.
Accés obert
In this paper, an uncommon failure of a Kaplan turbine blade has been analyzed. After the monitoring system detected a sudden increase in vibration levels, the turbine was inspected. The inspection showed that a large crack ...
A review of dynamic models and stability analysis for a hydro-turbine governing system
(2021-07)
Article.
Accés obert
Article.
Accés obert
Hydropower offers highly flexible, low-carbon generation that can be used to balance electricity grids with high levels of wind and solar penetration. This will become increasingly important as the energy transition unfolds. ...
Improved damage detection in Pelton turbines using optimized condition indicators and data-driven techniques
(2021-01-07)
Article.
Accés obert
Article.
Accés obert
The health condition of hydraulic turbines is one of the most critical factors for the operation safety and financial benefits of a hydro power plant. After the massive entrance of intermittent renewable energies, hydropower ...
Dynamic response of Pelton runners: Numerical and experimental analysis in prototypes
(Elsevier, 2020-09-01)
Article.
Accés obert
Article.
Accés obert
Worldwide electricity generation is featured by the growth of intermittent renewable energies. In this context, hydropower plays a fundamental role because it provides flexibility to the power grid and ensures its stability. ...
The potential for photovoltaic-powered pumped-hydro systems to reduce emissions, costs, and energy insecurity in rural China
(Elsevier, 2021-09)
Article.
Accés obert
Article.
Accés obert
Homes in rural China often have access to water wells for domestic and agricultural use. Given the significant difference in height between the well water and the roof of the house, such an arrangement could be used as a ...