Hydroelectric System Response to Part Load Vortex Rope Excitation

28th IAHR symposium on Hydraulic Machinery and Systems

Alligné, S.^1 ; Nicolet, C.^1 ; Bégum, A.^1 ; Landry, C.^2 ; Gomes, J.^2 ; Avellan, F.^2

Power Vision Engineering Sàrl, Ch. Des champs courbes 1, Ecublens

CH 1024, Switzerland^1

Ecole Polytechnique Fédérale de Lausanne, Laboratory for Hydraulic Machines, Lausanne

CH 1007, Switzerland^2

关键词: Cavitation vortex ropes;    Electrical components;    Equipment industries;    Hydraulic excitations;    Hydroelectric systems;    Output power fluctuations;    Pressure fluctuation;    Reduced scale models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/49/5/052002/pdf
DOI  :  10.1088/1755-1315/49/5/052002

来源: IOP

【 摘 要 】

The prediction of pressure and output power fluctuations amplitudes on Francis turbine prototype is a challenge for hydro-equipment industry since it is subjected to guarantees to ensure smooth and reliable operation of the hydro units. The European FP7 research project Hyperbole aims to setup a methodology to transpose the pressure fluctuations induced by the cavitation vortex rope on the reduced scale model to the prototype generating units. A Francis turbine unit of 444MW with a specific speed value of v = 0.29, is considered as case study. A SIMSEN model of the power station including electrical system, controllers, rotating train and hydraulic system with transposed draft tube excitation sources is setup. Based on this model, a frequency analysis of the hydroelectric system is performed to analyse potential interactions between hydraulic excitation sources and electrical components.