KR-20260065207-A - Apparatus and method for charging and discharging scheduling of electric vehicle

KR20260065207AKR 20260065207 AKR20260065207 AKR 20260065207AKR-20260065207-A

Abstract

According to an embodiment, an electric vehicle charging and discharging scheduling device is provided, comprising: one or more processors; and a memory for storing one or more programs executed by the one or more processors, wherein the processors include: a first processing unit for performing clustering of registered electric vehicles; a second processing unit for distributing winning bid amounts received from a demand management business operator server to each cluster; a third processing unit for generating a charging and discharging schedule for electric vehicles using the winning bid amounts distributed to each cluster; a fourth processing unit for determining whether a voltage abnormality event has occurred by comparing a charger voltage collected from a charger server with a preset reference voltage range; and a fifth processing unit for identifying at least one first electric vehicle connected to the charger where the voltage abnormality event occurred and adjusting the charging and discharging schedule of at least one first cluster to which the first electric vehicle belongs.

Inventors

박범수
김현섭
이민규
정재윤
박나연
고대건
한혜승
김성규
최정훈

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (20)

One or more processors; and A device having a memory for storing one or more programs executed by the above-mentioned one or more processors, The above processor is, A first processing unit that performs clustering for registered electric vehicles; A second processing unit that distributes the winning bid amount received from the demand management business operator server to each cluster; A third processing unit that generates a charging and discharging schedule for electric vehicles using the winning bid amounts distributed to each of the above clusters; A fourth processing unit that determines whether a voltage abnormality event has occurred by comparing the charger voltage collected from the charger server with a preset reference voltage range; and An electric vehicle charging and discharging scheduling device comprising a fifth processing unit that identifies at least one first electric vehicle connected to a charger where the above-mentioned voltage abnormal event occurred, and adjusts the charging and discharging schedule of at least one first group to which the first electric vehicle belongs.
In paragraph 1, The above-described fifth processing unit is an electric vehicle charging and discharging scheduling device that controls the charger voltage to be included in the reference voltage range through the adjustment of the above-described charging and discharging schedule.
In paragraph 2, The above-mentioned fifth processing unit is an electric vehicle charging and discharging scheduling device that adjusts the charging and discharging schedule while maintaining the winning bid amount per cluster.
In paragraph 1, The above-described fourth processing unit is an electric vehicle charging and discharging scheduling device that determines that an overvoltage event has occurred when the charger voltage exceeds the above-described reference voltage range.
In paragraph 4, The above-described fifth processing unit is an electric vehicle charging and discharging scheduling device that distributes at least a portion of the discharge amount of the first electric vehicle to the second electric vehicle belonging to the first group when the above-described overvoltage event occurs.
In paragraph 4, The above-described fifth processing unit is an electric vehicle charging and discharging scheduling device that distributes at least a portion of the charge amount of the second electric vehicle belonging to the first group to the first electric vehicle when the above-described overvoltage event occurs.
In paragraph 1, The above-described fourth processing unit is an electric vehicle charging/discharging scheduling device that determines that a low voltage event has occurred when the charger voltage is below the reference voltage range.
In Paragraph 7, The above-described fifth processing unit is an electric vehicle charging/discharging scheduling device that distributes at least a portion of the discharge amount of the second electric vehicle belonging to the first group to the first electric vehicle when the above-described low voltage event occurs.
In Paragraph 7, The above-described fifth processing unit is an electric vehicle charging and discharging scheduling device that, when the above-described low voltage event occurs, distributes at least a portion of the charge amount of the first electric vehicle to the second electric vehicle belonging to the first group.
In paragraph 1, An electric vehicle charging and discharging scheduling device that, when the fifth processing unit cannot control the charger voltage to be included in the reference voltage range through the adjustment of the charging and discharging schedule, adjusts the charging and discharging amount of the first electric vehicle without maintaining the winning bid amount per cluster.
A method performed by a computing device having one or more processors and a memory for storing one or more programs executed by said one or more processors, wherein The above processor, Step of performing clustering for registered electric vehicles; A step of distributing the winning bid amount received from the demand management operator server to each cluster; A step of generating a charging and discharging schedule for electric vehicles using the winning bid amounts distributed to each of the above clusters; A step of determining whether a voltage abnormality event has occurred by comparing the charger voltage collected from the charger server with a preset reference voltage range; and An electric vehicle charging and discharging scheduling method comprising the step of identifying a first electric vehicle connected to a charger in which the above-mentioned voltage abnormal event occurred, and adjusting the charging and discharging schedule of a first group to which the first electric vehicle belongs.
In claim 11, the step of adjusting the charge/discharge schedule is, An electric vehicle charging and discharging scheduling method that controls the charger voltage to be included in the reference voltage range through the adjustment of the above charging and discharging schedule.
In Clause 12, the step of adjusting the charge/discharge schedule is, An electric vehicle charging and discharging scheduling method that adjusts the charging and discharging schedule while maintaining the winning bid amount for each cluster.
In Clause 11, the step of determining whether the above-mentioned voltage abnormal event has occurred is, An electric vehicle charging and discharging scheduling method that determines that an overvoltage event has occurred when the charger voltage exceeds the reference voltage range.
In paragraph 14, the step of adjusting the charge/discharge schedule is, An electric vehicle charging and discharging scheduling method that, when the above overvoltage event occurs, distributes at least a portion of the discharge amount of the first electric vehicle to a second electric vehicle belonging to the first group.
In paragraph 14, the step of adjusting the charge/discharge schedule is, An electric vehicle charging and discharging scheduling method that distributes at least a portion of the charge of a second electric vehicle belonging to the first group to the first electric vehicle when the above overvoltage event occurs.
In Clause 11, the step of determining whether the above-mentioned voltage abnormal event has occurred is, An electric vehicle charging and discharging scheduling method that determines that a low voltage event has occurred when the charger voltage is below the reference voltage range.
In paragraph 17, the step of adjusting the charge/discharge schedule is, An electric vehicle charging and discharging scheduling method that, when the above low voltage event occurs, distributes at least a portion of the discharge amount of the second electric vehicle belonging to the first group to the first electric vehicle.
In paragraph 17, the step of adjusting the charge/discharge schedule is, An electric vehicle charging and discharging scheduling method that, when the above low voltage event occurs, distributes at least a portion of the charge of the first electric vehicle to a second electric vehicle belonging to the first group.
In Paragraph 11, A step of determining whether the charger voltage is included in the reference voltage range through the adjustment of the above charge/discharge schedule; and An electric vehicle charging and discharging scheduling method further comprising the step of adjusting the charging and discharging amount of the first electric vehicle without maintaining the winning bid amount per cluster when the charger voltage is not included in the reference voltage range.

Description

Apparatus and method for charging and discharging scheduling of electric vehicle One embodiment of the present invention relates to an electric vehicle charging and discharging scheduling device and method. With the rapid adoption of electric vehicles, research and business initiatives utilizing the high-voltage batteries installed in these vehicles as Energy Storage Systems (ESS) are actively underway. Energy storage systems can serve as energy sources and perform Vehicle-to-Grid (V2G) functions by connecting to the power grid to supply energy through charging and discharging. Through this, managing the charging and discharging schedules of electric vehicles is becoming a critical issue. Recently, as the adoption and sales volume of electric vehicles have increased, the number of variables has also increased, leading to problems such as increased computational complexity and, most notably, increased processing time. However, currently applied V2G technology does not account for the variability of electric vehicle charging and discharging at the distribution system level, and is therefore insufficient to resolve power quality issues arising from the expansion of V2G services. In addition, the rapid increase in the charging and discharging of electric vehicles is causing problems such as undervoltage and overvoltage in the power distribution system, so effective countermeasures are needed for these voltage fluctuation problems. FIG. 1 is a drawing for explaining an electric vehicle power management system according to an embodiment. FIG. 2 is a block diagram of an electric vehicle charging and discharging scheduling device according to an embodiment. FIG. 3 is a diagram illustrating the operation of the first processing unit and the second processing unit according to an embodiment. FIGS. 4 and FIGS. 5 are conceptual diagrams of the operation of the fifth processing unit according to an embodiment. FIGS. 6 to 9 are drawings for explaining the charging and discharging scheduling adjustment process of the fifth processing unit according to the embodiment. FIG. 10 is a flowchart of an electric vehicle charging and discharging scheduling method according to an embodiment. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted. In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology. Furthermore, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention. In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as "at least one of A and B and C (or more than one)," it may include one or more of all combinations that can be formed from A, B, and C. In addition, terms such as first, second, A, B, (a), (b), etc. may be used when describing the components of the embodiments of the present invention. These terms are intended merely to distinguish a component from other components and are not limited by the nature, order, sequence, etc., of the said component. And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component. Furthermore, when described as being formed or placed "above or below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above or below," it may include the meaning of a downward direction as well as an upward direction relative to a single component. Hereinafter, embodiments will be described in detail with reference to the attached drawings, provided that identical or corresponding components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted. FIG. 1 is a drawing for illustrat