Method for optimizing the operation of a reversible traction substation and associated devices

A method for optimizing the operation of a reversible substation of a power supply system for railway vehicles, the system being situated at the interface between a power supply grid and a DC power line, said DC power line being positioned along a track and being electrically connected to a railway vehicle, said reversible substation having a traction operating mode in which the reversible substation transfers electricity delivered by the power supply grid to the DC power line, a braking operating mode in which the reversible substation transfers excess recovery electricity captured on the DC power line to the power supply grid, the method comprising:

• determining a current value of a first operating mode selected from the traction operating mode and the braking operating mode based on instantaneous values of a plurality of operating parameters of the substation;
• selecting an optimization function from a plurality of optimization functions based on the current value of the first operating mode, the optimization function depending on at least one operating property of the group comprising:
• voltage, traction energy, harmonic distortion of current, peak power, power factor, braking energy, efficiency, overall net energy and overall harmonic content;
• maximizing the selected optimization function to obtain a maximized value for each operating property of the plurality of operating properties;
• computing an optimized value for each configuration parameter of a plurality of configuration parameters of the substation based on the maximized values of the plurality of operating properties;
• and
• setting the instantaneous values of the plurality of configuration parameters of the substation at said optimized values of the plurality of configuration parameters.