Parametric study of water column separation in Francis pump-turbine draft tube
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This paper presents a numerical simulation study of the transient behavior of a 2x340MW pump-turbine power plant, where the results show an unstable behavior at runaway. First, the modeling of hydraulic components based on equivalent schemes is presented. ...
International Association For Hydraulic Research2008
This paper presents a real-time extension, called SIMSEN-RT, of the simulation software SIMSEN. SIMSEN-RT allows carrying out hardware-in-the-loop (HIL) simulations of power systems using hardware regulators. It can therefore be used to fine-tune regulator ...
On a développé six stragégies de réduction de la consommation d’eau fraîche dans un atelier de désencrage de vieux papiers par la réutilisation de l’eau blanche excédentaire d’un atelier de papier voisin. Pour réaliser l’étude, on a établi et validé une si ...
The paper below is a follow up of the authors contribution to the IAHR 2002, in which the simulations of the flow through Pelton buckets were presented. In 2002, a good consistency between the predicted and measured efficiency was presented. This paper wil ...
International Association For Hydraulic Research2004
Design, operation and refurbishment of hydraulic turbines, pumps or pump-turbine are strongly related to cavitation flow phenomena, which may occur in either the rotating runner-impeller or the stationary parts of the machine. The paper presents the cavita ...
Hydropower represented in 1999 19% of the world electricity production and the absolute production is expected to grow considerably during the next 30 years. Francis turbines play a major role in the hydroelectric production due to their extended range of ...
Regions of positive slope in the pressure-discharge characteristics are one of the major concerns in design and operation of centrifugal pumps, as they are limiting the admissible operating range to values above the critical discharge. The industrial pump ...
An analytical approach allowing modelling transient phenomena in pipes, valves, surge tank and Francis turbines based on impedance method is developed. These models are introduced in a software called “SIMSEN”, which simulates the behaviour of complex appl ...
The authors describe a mathematical tool to help in the exploitation of a hydroelectric complex operated in partnership. The aim is the simulation of the exploitation of a hydroelectric system week by week, so as to optimise system operation, the model dev ...