Method for optimizing the operation of a reversible traction substation and associated devices
First Claim
1. 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.
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Accused Products
Abstract
The method according to the invention aims to optimize the operation of a reversible traction substation (Sk) of a power supply system (4) for railway vehicles, said reversible substation being able to be commanded in a traction operating mode or a braking mode.
This method includes:
- determining a current value (Mc) of a favored operating mode;
- maximizing at least one optimization function (F) that depends on the current value of the favored operating mode, based on instantaneous values (G(t)) of multiple operating properties of the substation (Sk);
- computing optimized values (Popt(t)) for multiple configuration parameters of the substation (Sk) from maximized values (Gmax(t)) of the operating properties.
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Citations
9 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification