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Modeling and Numerical Simulation of a Complete Hydroelectric Production Site

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4 Author(s)
Nicolet, C. ; Lab. for Hydraulic Machines of EPFL, Swiss Fed. Inst. of Technol., Lausanne ; Allenbach, P. ; Simond, J.-J. ; Avellan, F.

For many years the EPFL Laboratory for Electrical Machines develops SIMSEN, a numerical software package for the simulation in transient and steady-state conditions of electrical power systems and adjustable speed drives, having an arbitrary topology. SIMSEN is based on a collection of modules, each corresponding to one system component (machines, converters, transformers, control devices, etc.). This contribution presents the extension of SIMSEN to the hydraulic components of a hydroelectric power plant including pump-turbine, valve, penstock, surge tank, gallery, reservoir, etc. The basic idea is to define for each hydraulic component an equivalent electric component which can be introduced in the existing electric version of SIMSEN. Doing this, it becomes possible to use the modularity of the electric version to define the complete topology of the hydroelectric power plant and the connected electrical network. This extension enables numerical simulations taking precisely into account the interactions between the hydraulic and the electric parts of the system during transients. It is therefore useful for transient and stability analyses as well as for the design optimization.

Published in:

Power Tech, 2007 IEEE Lausanne

Date of Conference:

1-5 July 2007