Photovoltaic solar concentration system

The invention relates to a photovoltaic solar concentration system comprising a Fresnel concentrator lens (1) with a constant facet thickness in a first region, specifically the central region of the lens (1), and a constant facet height in a second region, specifically the peripheral region of the lens (1), in order to maximise the optical efficiency of the lens (1), maintaining control over the typical aberrations of the system. The photovoltaic solar concentration system also comprises a secondary optical element (2) having a circular inlet face (3) with a convex curvature, a section for receiving a rim (4), and a pyramidal section (6), the cross-section changing shape from a circle into a square in the lower end (7) where the photovoltaic receiver is received. Said system improves the optical and thermodynamic efficiency of existing systems, facilitates production and installation in the photovoltaic module, and reduces the production-related costs.