US-20260127555-A1 - DEVICE AND METHOD FOR SCHEDULING CHARGING AND DISCHARGING OF ELECTRIC VEHICLE

Abstract

A device for scheduling charging and discharging of an electric vehicle is provided. The device includes a processor, and a memory to store a program executed by the processor. The processor includes a first processing unit to cluster registered electric vehicles, a second processing unit to distribute a contracted amount received from a demand management business operator server to each cluster, a third processing unit to generate a charging and discharging schedule of an electric vehicle using the contracted amount distributed to each cluster, a fourth processing unit to compare a voltage of a charger collected from a charger server with a preset reference voltage range and determine whether a voltage abnormality event occurs, and a fifth processing unit to adjust a charging and discharging schedule of a first cluster to which the first electric vehicle belongs when the voltage abnormality event occurs.

Inventors

• Bum Su Park
• Hyun Sup Kim
• Min Kyu Lee
• Jae Yun JUNG
• Na Yeon Park
• Dae Gun Ko
• Hye Seung Han
• Sung Kyu Kim
• Jeong Hoon Choi

Assignees

• HYUNDAI MOTOR COMPANY
• KIA CORPORATION

Dates

Publication Date

20260507

Application Date

20250508

Priority Date

20241101

Claims (20)

1. 1 . An electrical vehicle control device for scheduling charging and discharging of an electric vehicle, comprising: a memory storing computer-executable instructions; and at least one processor configured to access the memory and execute the instructions, wherein the instructions comprise: clustering, via a first processing unit, a plurality of registered electric vehicles; distributing, via a second processing unit, a contracted amount of electric received from a demand management business operator server to at least one cluster; generating, via a third processing unit, a charging and discharging schedule of at least one registered electric vehicle using the contracted amount distributed to the at least one cluster; comparing, via a fourth processing unit, a voltage of a charger collected from a charger server with a preset reference voltage range and determining whether a voltage abnormality event occurs, wherein the voltage abnormality event occurs when the voltage is outside of the preset reference voltage range; and adjusting, via a fifth processing unit, a charging and discharging schedule of the at least one registered electric vehicle of the at least one cluster when the voltage abnormality event occurs.
2. 2 . The electrical vehicle control device of claim 1 , wherein the instructions further comprise controlling, via the fifth processing unit, the voltage of the charger to be included within the reference voltage range through the adjustment of the charging and discharging schedule.
3. 3 . The electrical vehicle control device of claim 2 , wherein the instructions further comprise adjusting, via the fifth processing unit, the charging and discharging schedule while maintaining the contracted amount for the at least one cluster.
4. 4 . The electrical vehicle control device of claim 1 , wherein the instructions further comprise determining, via the fourth processing unit, an overvoltage event occurs when the voltage of the charger exceeds the reference voltage range.
5. 5 . The electrical vehicle control device of claim 4 , wherein the instructions further comprise, when the overvoltage event occurs, distributing, via the fifth processing unit, at least a portion of a discharging amount of a first electric vehicle to a second electric vehicle belonging to a first cluster.
6. 6 . The electrical vehicle control device of claim 4 , wherein the instructions further comprise, when the overvoltage event occurs, distributing, via the fifth processing unit at least a portion of a charging amount of a second electric vehicle belonging to a first cluster to a first electric vehicle.
7. 7 . The electrical vehicle control device of claim 1 , wherein the instructions further comprise determining, via the fourth processing unit, an undervoltage event occurs when the voltage of the charger is below the reference voltage range.
8. 8 . The electrical vehicle control device of claim 7 , wherein the instructions further comprise, when the undervoltage event occurs, distributing, via the fifth processing unit, at least a portion of a discharging amount of a second electric vehicle belonging to a first cluster to a first electric vehicle.
9. 9 . The electrical vehicle control device of claim 7 , wherein the instructions further comprise, when the undervoltage event occurs, distributing, via the fifth processing unit, at least a portion of a charging amount of a first electric vehicle to a second electric vehicle belonging to a first cluster.
10. 10 . The electrical vehicle control device of claim 1 , wherein the instructions further comprise, when the fifth processing unit does not control the voltage of the charger to be included within the reference voltage range through the adjustment of the charging and discharging schedule, adjusting, via the fifth processing unit, charging and discharging amounts of a first electric vehicle without maintaining the contracted amount for each cluster.
11. 11 . A method of scheduling charging and discharging of an electric vehicle, which is performed by a computing device, a memory storing computer-executable instructions, and at least one processor configured to access the memory and execute the instructions, the method comprising: performing, by the processor, clustering of registered electric vehicles; distributing, by the processor, a contracted amount received from a demand management business operator server to each cluster; generating, by the processor, a charging and discharging schedule of an electric vehicle using the contracted amount distributed to each cluster; comparing, by the processor, a voltage of a charger collected from a charger server with a preset reference voltage range and determining whether a voltage abnormality event occurs; and determining, by the processor, a first electric vehicle connected to a charger in which the voltage abnormality event occurs and adjusting a charging and discharging schedule of a first cluster to which the first electric vehicle belongs.
12. 12 . The method of claim 11 , wherein the adjusting of the charging and discharging schedule includes controlling the voltage of the charger to be included within the reference voltage range through the adjusting of the charging and discharging schedule.
13. 13 . The method of claim 12 , wherein the adjusting of the charging and discharging schedule includes adjusting the charging and discharging schedule while maintaining the contracted amount for each cluster.
14. 14 . The method of claim 11 , wherein the determining of whether the voltage abnormality event occurs includes determining that an overvoltage event occurs when the voltage of the charger exceeds the reference voltage range.
15. 15 . The method of claim 14 , wherein the adjusting of the charging and discharging schedule includes distributing at least a portion of a discharging amount of the first electric vehicle to a second electric vehicle belonging to the first cluster when the overvoltage event occurs.
16. 16 . The method of claim 14 , wherein the adjusting of the charging and discharging schedule includes distributing at least a portion of a charging amount of a second electric vehicle belonging to the first cluster to the first electric vehicle when the overvoltage event occurs.
17. 17 . The method of claim 11 , wherein the determining of whether the voltage abnormality event occurs includes determining that an undervoltage event occurs when the voltage of the charger is below the reference voltage range.
18. 18 . The method of claim 17 , wherein the adjusting of the charging and discharging schedule includes distributing at least a portion of a discharging amount of a second electric vehicle belonging to the first cluster to the first electric vehicle when the undervoltage event occurs.
19. 19 . The method of claim 17 , wherein the adjusting of the charging and discharging schedule includes distributing at least a portion of a charging amount of the first electric vehicle to a second electric vehicle belonging to the first cluster when the undervoltage event occurs.
20. 20 . The method of claim 11 , further comprising: determining the voltage of the charger to be included within the reference voltage range through the adjusting of the charging and discharging schedule; and adjusting charging and discharging amounts of the first electric vehicle without maintaining the contracted amount for each cluster when the voltage of the charger is not included within the reference voltage range.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0153326, filed on Nov. 1, 2024, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD The present disclosure relates to a device and method for scheduling charging and discharging of an electric vehicle. BACKGROUND As the spread of electric vehicles accelerates, research and business that utilize high-voltage batteries mounted on electric vehicles as an energy storage system (ESS) is increasing. The ESS may serve as an energy source and perform a vehicle-to-grid (V2G) function that supplies energy through charging and discharging in connection with a power system. As a result, the management of charging and discharging scheduling of electric vehicles is being considered. Recently, as the spread and sales of electric vehicles increase, variables are increasing, which is causing representative problems such as increased computational dimensions, increased complexity, and increased (e.g., required) time. However, V2G technology currently being applied does not consider the variability of electric vehicle charging and discharging on the basis of a distribution system and thus is insufficient to solve power quality problems resulting from the expansion of V2G services. In addition, since a rapid increase in the amount of charging and discharging of electric vehicles is causing problems such as an undervoltage, overvoltage, and the like in the distribution system, it would be useful to have effective countermeasures to address such voltage fluctuation. SUMMARY The present disclosure is directed to providing a device and method for scheduling charging and discharging of an electric vehicle, which considers voltage fluctuation occurring in a distribution system during the charging and discharging of the electric vehicle. In addition, the present disclosure is directed to providing a device and method for scheduling charging and discharging of an electric vehicle, which are capable of (e.g., efficiently) managing power quality. In addition, the load burden of a bus in which an undervoltage or an overvoltage is predicted may be reduced. According to an aspect of the present disclosure, there is provided a device for scheduling charging and discharging of an electric vehicle, which includes one or more processors, and a memory configured to store one or more programs executed by the one or more processors. The processor may include a first processing unit configured to cluster registered electric vehicles, a second processing unit configured to distribute a contracted amount received from a demand management business operator server to each cluster of registered electric vehicles, a third processing unit configured to generate a charging and discharging schedule of an electric vehicle using the contracted amount distributed to each cluster, a fourth processing unit configured to compare a voltage of a charger collected from a charger server with a preset reference voltage range and determine whether a voltage abnormality event occurs, and a fifth processing unit configured to determine at least one first electric vehicle connected to a charger in which the voltage abnormality event occurs and adjust a charging and discharging schedule of at least one first cluster to which the first electric vehicle belongs. The fifth processing unit may control the voltage of the charger to be included within the reference voltage range through the adjustment of the charging and discharging schedule. The fifth processing unit may adjust the charging and discharging schedule while maintaining the contracted amount for each cluster. The fourth processing unit may determine that an overvoltage event occurs when the voltage of the charger exceeds the reference voltage range. When the overvoltage event occurs, the fifth processing unit may distribute at least some discharging amount of the first electric vehicle to a second electric vehicle belonging to the first cluster. When the overvoltage event occurs, the fifth processing unit may distribute at least some charging amount of the second electric vehicle belonging to the first cluster to the first electric vehicle. The fourth processing unit may determine that an undervoltage event occurs when the voltage of the charger is below the reference voltage range. When the undervoltage event occurs, the fifth processing unit may distribute at least some discharging amount of the second electric vehicle belonging to the first cluster to the first electric vehicle. When the undervoltage event occurs, the fifth processing unit may distribute at least some charging amount of the first electric vehicle to the second electric vehicle belonging to the first cluster. When the fifth processing unit does not control the voltage of the charger to be included within the reference voltage range through the adjustment of the charging an