Hydraulic system for a water network and water network comprising such a system

A hydraulic system for generating electrical energy from a water stream in a hydraulic network, comprising:

• at least one cross flow pico-turbine mounted to a shaft extending perpendicularly to a direction of said water stream, said at least one cross flow pico-turbine including a substantially annular shaped blade installed in the water stream to generate mechanical rotational energy, the substantially annular shaped blade including at least two circular arc blades mounted end to end, and the shaft of the pico-turbine being mounted at a single point of the annular blade, at a junction between the ends of the two circular arc blades,
• at least one generator unit, installed out of the water stream and coupled with the shaft of the pico-turbine to transform the mechanical rotational energy into electrical energy,
• at least one control unit, installed out of the water stream, connected to the at least one generator unit, controlling distribution of the electrical energy collected as well as a rotation of the at least one cross flow pico-turbine as a function of characteristics of the water stream, and
• an adaptive base plate, installed out of the water stream, which keeps the shaft of the at least one cross flow pico-turbine radial with respect to the direction of the water stream, and which supports the control unit as well as the at least one generator unit.