METHOD AND DEVICE FOR CHARGING ELECTRIC VEHICLE IN POWER SYSTEM
First Claim
1. A method for charging an electric vehicle in a power system, comprising:
- obtaining a plurality of electric vehicles connected to the power system at a dispatching time, and obtaining a rated charging power and a charging requirement at the dispatching time of each electric vehicle respectively;
determining a charging period corresponding to the plurality of electric vehicles;
determining a forecast period, and obtaining a charging requirement, a remaining charging energy capacityand a maximum charging power at each charging time in the forecast period corresponding to a set of electric vehicles to be connected to the power system in the forecast period;
establishing a charging model of the plurality of electric vehicles, establishing a first constraint of the charging model according to the rated charging power and the charging requirement of each electric vehicle at the dispatching time, and establishing a second constraint of the charging model according to the charging requirement, the remaining charging energy capacity and the maximum charging power of the set at each charging time in the forecast period; and
solving the charging model under the first constraint and the second constraint to obtain an optimal charging power of each electric vehicle at each charging time in the charging period, and sending the optimal charging power at the dispatching time to each electric vehicle so as to charge each electric vehicle under the optimal charging power.
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Abstract
A method and a device for charging an electric vehicle in a power system are provided. The method includes: obtaining a plurality of electric vehicles connected to the power system at a dispatching time, and obtaining a rated charging power and a charging requirement at the dispatching time; determining a charging period corresponding to the plurality of electric vehicles; determining a forecast period, and obtaining a charging requirement, a remaining charging energy capacity and a maximum charging power; establishing a charging model of the plurality of electric vehicles, establishing a first constraint of the charging model, and establishing a second constraint of the charging model; and solving the charging model under the first constraint and the second constraint to obtain an optimal charging power of each electric vehicle at each charging time in the charging period so as to charge each electric vehicle under the optimal charging power.
3 Citations
11 Claims
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1. A method for charging an electric vehicle in a power system, comprising:
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obtaining a plurality of electric vehicles connected to the power system at a dispatching time, and obtaining a rated charging power and a charging requirement at the dispatching time of each electric vehicle respectively; determining a charging period corresponding to the plurality of electric vehicles; determining a forecast period, and obtaining a charging requirement, a remaining charging energy capacityand a maximum charging power at each charging time in the forecast period corresponding to a set of electric vehicles to be connected to the power system in the forecast period; establishing a charging model of the plurality of electric vehicles, establishing a first constraint of the charging model according to the rated charging power and the charging requirement of each electric vehicle at the dispatching time, and establishing a second constraint of the charging model according to the charging requirement, the remaining charging energy capacity and the maximum charging power of the set at each charging time in the forecast period; and solving the charging model under the first constraint and the second constraint to obtain an optimal charging power of each electric vehicle at each charging time in the charging period, and sending the optimal charging power at the dispatching time to each electric vehicle so as to charge each electric vehicle under the optimal charging power. - View Dependent Claims (2, 3, 4, 5)
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6. A device for charging an electric vehicle in a power system, comprising:
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a non-transitory memory comprising instructions stored thereon; a processor, configured by the instructions for performing and comprising; a first obtaining module, configured for obtaining a plurality of electric vehicles connected to the power system at a dispatching time, and obtaining a rated charging power and a charging requirement of each electric vehicle at the dispatching time respectively; a first determining module, configured for determining a charging period corresponding to the plurality of electric vehicles; a second determining module, configured for determining a forecast period, in which the forecast period is less than or equal to the charging period; a second obtaining module, configured for obtaining a charging requirement, a remaining charging energy capacity and a maximum charging power at each charging time in the forecast period corresponding to a set of electric vehicles to be connected to the power system in the forecast period; an establishing module, configured for establishing a charging model of the plurality of electric vehicles, establishing a first constraint of the charging model according to the rated charging power and the charging requirement of each electric vehicle at the dispatching time, and establishing a second constraint of the charging model according to the charging requirement, the remaining charging energy capacity and the maximum charging power of the set at each charging time in the forecast period; a solving module, configured for solving the charging model under the first constraint and the second constraint to obtain an optimal charging power of each electric vehicle at each charging time in the charging period; and a sending module, configured for sending the optimal charging power at the dispatching time to each electric vehicle so as to charge each electric vehicle under the optimal charging power. - View Dependent Claims (7, 8, 9, 10)
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11. A computer readable storage medium, comprising a computer program for executing steps of:
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obtaining a plurality of electric vehicles connected to the power system at a dispatching time, and obtaining a rated charging power and a charging requirement at the dispatching time of each electric vehicle respectively; determining a charging period corresponding to the plurality of electric vehicles; determining a forecast period, and obtaining a charging requirement, a remaining charging energy capacity and a maximum charging power at each charging time in the forecast period corresponding to a set of electric vehicles to be connected to the power system in the forecast period; establishing a charging model of the plurality of electric vehicles, establishing a first constraint of the charging model according to the rated charging power and the charging requirement of each electric vehicle at the dispatching time, and establishing a second constraint of the charging model according to the charging requirement, the remaining charging energy capacity and the maximum charging power of the set at each charging time in the forecast period; and solving the charging model under the first constraint and the second constraint to obtain an optimal charging power of each electric vehicle at each charging time in the charging period, and sending the optimal charging power at the dispatching time to each electric vehicle so as to charge each electric vehicle under the optimal charging power.
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Specification