MODELING OF HYDRO-PNEUMATIC ENERGY STORAGE USING PUMP TURBINES

Egoi Ortego (1) , Antoine Dazin (1) , Guy Caignaert (1) , Frédéric Colas (2) , Olivier Coutier-Delgosha (1)

1 LML - Laboratoire de Mécanique de Lille - FRE 3723
2 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697

Modelling of a hydro-pneumatic energy storage system is the main aim of this paper. The project aims to model a prototype that uses a rotodynamic multi-stage pump-turbine to displace a virtual liquid piston for air compression. A dynamic model of the storage system is developed using the block diagram methodology. Two driving strategies are also developed in order to manage the constant variation of operating point due to pressure variation: maximum efficiency strategy and power demand response strategy.

Mots clés: energy storage; hydropneumatic; rotodynamic pump-turbine

Domaines: Energie électrique; Mécanique [physics.med-ph]; Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Egoi Ortego, Antoine Dazin, Guy Caignaert, Frédéric Colas, Olivier Coutier-Delgosha. MODELING OF HYDRO-PNEUMATIC ENERGY STORAGE USING PUMP TURBINES. 17th International Seminar on hydropower Plants, Nov 2012, Austria. pp.117-128. ⟨hal-00802251⟩