Abstract: A system for excavating a trench in ground submerged in water is described. The system includes an excavation device comprising moving means capable of moving the excavation device on the submerged ground and excavation means capable of being supplied with pressurized water and excavating the submerged ground using the pressurized water, The system also includes control means configured to control the moving means and supply means configured to supply pressurized water to the excavation means, where the supply means can include at least one water-jet turbine.

Abstract: The invention relates to a method for transferring, during a predetermined transfer duration, the electric power supply of an electric distribution line (7) from a first source (1) to a second source (2), without overlapping of the two sources. The invention also relates to a source inverter implementing such a method.

Abstract: The invention relates to a method for transferring, during a predetermined transfer duration, the electric power supply of an electric distribution line (7) from a first source (1) to a second source (2), without overlapping of the two sources. The invention also relates to a source inverter implementing such a method.

Abstract: A method for generating power in a network including a non-intermittent source and an intermittent source, including predicting a demand by a load and an uncertainty; distributing a power to be generated between the sources, the distributing being suitable for minimizing a fuel consumption required for the generation by the non-intermittent source and the intermittent source; and dimensioning a reserve of power, the dimensioning being suitable for compensating for the consumption uncertainty.