Memorias de investigación
Artículos en revistas:
Risk of penstock fatigue in pumped-storage power plants operating with variable speed in pumping mode
Año:2019
Áreas de investigación
  • Centrales hidráulicas,
  • Mantenimiento de centrales eléctricas,
  • Ingenieria civil
Datos
Descripción
The upgrade of a pumped-storage power plant (PSPP) to allow variable speed operation offer several advantages in pumping and generating modes. However, in pumping mode at part load, both pressure and torque pulsations develop in the pump turbine runner. This paper evaluates the risk of fatigue damage in the penstock of a variable-speed PSPP due to the propagation of the pressure pulsations developing in the pump turbine runner at partial load in pumping mode. For that purpose, a simulation model of a variable-speed PSPP has been developed. The pressure and torque pulsations are generated each from a different set of sinusoidal functions calibrated from the results of a Computational Fluid Dynamic model, which was in turn validated from experimental data. A Monte Carlo simulation has been performed considering different temporal gaps between the sinusoidal functions reproducing the pressure pulsations in one and another pump turbine. The number of stress cycles that may cause fatigue damage in the penstock has been obtained from the results of the simulations and the fatigue curves defined in the Eurocode, and then transformed into the maximum number of hours per year the PSPP can operate at partial load in pumping mode to avoid fatigue damages.
Internacional
Si
JCR del ISI
Si
Título de la revista
Renewable Energy
ISSN
0960-1481
Factor de impacto JCR
4,9
Información de impacto
Datos JCR del año 2017
Volumen
133
DOI
10.1016/j.renene.2018.10.060
Número de revista
Desde la página
636
Hasta la página
646
Mes
OCTUBRE
Ranking
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Hidroinformática y Gestión del Agua