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EP-4737195-A1 - MULTI-MODE CHARGING AND DISCHARGING CONTROL METHOD AND SYSTEM FOR CHARGING PILE

EP4737195A1EP 4737195 A1EP4737195 A1EP 4737195A1EP-4737195-A1

Abstract

Provided are a multi-mode charging and discharging control method and system for charging piles, relating to the technical field of charging and discharging control. The method comprises: configuring charging pile charging and discharging modes; obtaining a peak value period, an flat value period, and a valley value period; in the peak value period, starting a peak mode, and generating a charging pile bidirectional discharging strategy; in the flat value period, starting a flat mode, executing charging pile linkage discharging optimization, and generating a linkage discharging strategy to perform charging pile discharging control; and in the valley value period, starting a valley mode, executing charging pile charging optimization, and generating a charging pile charging strategy to perform charging pile charging control. The technical problem of poor scenario adaptability caused by lack of analysis and adjustment of a power grid load in the related art is solved, adaptive adjustment of charging and discharging control is achieved on the basis of a power grid load scenario, and the technical effect of improving the scenario adaptability is achieved.

Inventors

  • DAI, YONG
  • LIN, WEI
  • WEI, Xiaofei

Assignees

  • Anhui Yijianeng Digital Technology Co., Ltd.

Dates

Publication Date
20260506
Application Date
20240816

Claims (9)

  1. A multi-mode charging and discharging control method for charging piles, comprising: configuring charging pile charging and discharging modes, wherein the charging pile charging and discharging modes comprise a peak mode, a flat mode and a valley mode; when a preset update period is met, performing a statistics operation on electricity consumption information of a power grid in a preset region in a preset period to obtain a peak value period, a flat value period and a valley value period; when the power grid is in the peak value period, starting the peak mode, receiving a charging pile discharging requirement in the preset region, executing charging pile bidirectional discharging optimization, and generating a charging pile bidirectional discharging strategy to perform charging pile discharging control; when the power grid is in the flat value period, starting the flat mode, receiving a charging pile discharging requirement in the preset region, executing charging pile linkage discharging optimization, and generating a linkage discharging strategy to perform charging pile discharging control; and when the power grid is in the valley value period, starting the valley mode, receiving a charging pile discharging requirement in the preset region, executing charging pile charging optimization, and generating a charging pile charging strategy to perform charging pile charging control.
  2. The method as claimed in claim 1, wherein the when a preset update period is met, performing a statistics operation on electricity consumption information of a power grid in a preset region in a preset period to obtain a peak value period, a flat value period and a valley value period comprises: constructing an electricity consumption fluctuation time sequence curve, wherein the electricity consumption information of the power grid in the preset region comprises an electricity consumption time point table in the preset region; configuring a peak value electricity consumption range, a flat value electricity consumption range and a valley value electricity consumption range; and performing period segmentation on the electricity consumption fluctuation time sequence curve according to the peak value electricity consumption range, the flat value electricity consumption range and the valley value electricity consumption range to generate the peak value period, the flat value period and the valley value period.
  3. The method as claimed in claim 2, wherein the constructing an electricity consumption fluctuation time sequence curve, wherein the electricity consumption information of the power grid in the preset region comprises an electricity consumption time point table in the preset region: extracting a plurality of recorded electricity consumptions at a first time point in the electricity consumption time point table in the preset region; sorting the plurality of recorded electricity consumptions from small to large to generate a recorded electricity consumption sorting result; extracting a first recorded electricity consumption with a quarter number from the recorded electricity consumption sorting result, and extracting a second recorded electricity consumption with a three-quarter number from the recorded electricity consumption sorting result; calculating a deviation between the second recorded electricity consumption and the first recorded electricity consumption to generate an electricity consumption interinterquartile range; constructing a centralized box line diagram according to the electricity consumption interquartile range, the first recorded electricity consumption and the second recorded electricity consumption, and distributing the plurality of recorded electricity consumptions to obtain a maximum electricity consumption of a centralized box, which is set as an electricity consumption at the first time point; and determining respective electricity consumptions at multiple unit time points by the above method for determining the electricity consumption at the first time point to construct the electricity consumption fluctuation time sequence curve.
  4. The method as claimed in claim 1, wherein the when the power grid is in the peak value period, starting the peak mode, receiving the charging pile discharging requirement in the preset region, executing charging pile bidirectional discharging optimization, and generating a charging pile bidirectional discharging strategy to perform charging pile discharging control comprises: the charging pile discharging requirement in the preset region comprises a charging pile required discharging capacity and a charging pile initial electricity storage capacity; obtaining a charging pile redundant electricity storage capacity according to the charging pile required discharging capacity and the charging pile initial electricity storage capacity; setting at most two-thirds of the charging pile redundant electricity storage capacity as a power distribution network direction discharging capacity; and executing the charging pile bidirectional discharging optimization according to the power distribution network direction discharging capacity, and generating the charging pile bidirectional discharging strategy to perform charging pile discharging control.
  5. The method as claimed in claim 4, wherein the executing the charging pile bidirectional discharging optimization according to the power distribution network direction discharging capacity, and generating the charging pile bidirectional discharging strategy to perform charging pile discharging control comprises: the charging pile initial electricity storage capacity comprises an initial electricity storage capacity of a charging pile with a first number, an initial electricity storage capacity of a charging pile with a second number, ..., and an initial electricity storage capacity of a charging pile with the Nth number; extracting charging piles having the initial electricity storage capacity greater than or equal to a preset electricity storage capacity from the charging pile with the first number, the charging pile with the second number, ..., and the charging pile with the Nth number to obtain power distribution network direction discharging charging pile numbers; equally dividing the power distribution network direction discharging capacity to charging piles with the power distribution network direction discharging charging pile numbers to generate a power distribution network direction discharging strategy; configuring a user side direction discharging strategy, wherein the user side direction discharging strategy implements real-time discharging of a charging pile energy storage battery based on user requirements; and according to the power distribution network direction discharging strategy and the user side direction discharging strategy, constructing the charging pile bidirectional discharging strategy to perform charging pile discharging control.
  6. The method as claimed in claim 1, wherein when the power grid is in the flat value period, starting the flat mode, receiving a charging pile discharging requirement in the preset region, executing charging pile linkage discharging optimization, and generating a linkage discharging strategy to perform charging pile discharging control comprises: the charging pile discharging requirement in the preset region comprises a charging pile required discharging capacity and a charging pile initial electricity storage capacity; extracting a first type of charging piles having the charging pile required discharging capacity greater than the charging pile initial electricity storage capacity; extracting a second type of charging piles having the charging pile required discharging capacity less than the charging pile initial electricity storage capacity; and activating a power grid for auxiliary discharging for the first type of charging piles, and executing energy storage battery discharging for the second type of charging piles, as to generate the linkage discharging strategy to perform charging pile discharging control.
  7. The method as claimed in claim 1, wherein the when the power grid is in the valley value period, starting the valley mode, receiving a charging pile discharging requirement in the preset region, executing charging pile charging optimization, and generating a charging pile charging strategy to perform charging pile charging control comprises: configuring a power grid alternating current discharging strategy according to the charging pile discharging requirement in the preset region, wherein the power grid alternating current discharging strategy invokes the power grid based on user requirements for alternating current charging for users through charging piles; obtaining an initial electricity storage capacity ratio according to a charging pile initial electricity storage capacity in the charging pile discharging requirement in the preset region, wherein the initial electricity storage capacity ratio represents a ratio of a remaining electricity of any charging pile to an electric energy capacity thereof; extracting a third type of charging piles having the initial electricity storage capacity ratio less than or equal to an electricity storage capacity ratio threshold to configure a power grid charging strategy; and constructing the charging pile charging strategy according to the power grid alternating current discharging strategy and the power grid charging strategy, as to perform charging pile charging control.
  8. The method as claimed in claim 4, further comprising: when a first charging pile is connected by a charging user, obtaining a model of a battery to be charged and an electricity to be charged; when an initial electricity storage capacity of the first charging pile is less than the electricity to be charged, adding a fourth type of charging piles; when the initial electricity storage capacity of the first charging pile is greater than the electricity to be charged, adding a fifth type of charging piles; and invoking the fifth type of charging piles for auxiliary charging to the fourth type of charging piles, comprising: obtaining a lacking charging capacity of any of the fourth type of charging piles, and matching auxiliary charging piles to be scheduled in the fifth type of charging piles, wherein a redundant electricity storage capacity of the auxiliary charging pile to be scheduled is greater than or equal to the lacking charging capacity; constructing a plurality of scheduling lines corresponding to the auxiliary charging piles to be scheduled, and activating a line loss prediction channel to execute electricity loss analysis to generate electricity loss feature values, wherein the line loss prediction channel has a graph neural network topology structure; and according to preset number of times, updating the auxiliary charging piles to be scheduled to obtain updated auxiliary charging piles to be scheduled, determining a plurality of scheduling lines corresponding to the updated auxiliary charging piles to be scheduled and electricity loss feature values, and extracting a charging pile scheduling strategy with a minimum electricity loss feature value for auxiliary charging to the fourth type of charging piles.
  9. A multi-mode charging and discharging control system for charging piles, configured to perform the steps of the method as claimed in any one of claims 1 to 8, the system comprising: a charging and discharging mode configuring assembly, the charging and discharging mode configuring assembly being configured to configure charging pile charging and discharging modes, wherein the charging pile charging and discharging modes comprise a peak mode, a flat mode and a valley mode; an electricity consumption information statistics assembly, the electricity consumption information statistics assembly being configured to, when a preset update period is met, perform a statistics operation on electricity consumption information of a power grid in a preset region in a preset period to obtain a peak value period, a flat value period and a valley value period; a bidirectional discharging optimization assembly, the bidirectional discharging optimization assembly being configured to, when the power grid is in the peak value period, start the peak mode, receive a charging pile discharging requirement in the preset region, execute charging pile bidirectional discharging optimization, and generate a charging pile bidirectional discharging strategy to perform charging pile discharging control; a linkage discharging optimization assembly, the linkage discharging optimization assembly being configured to, when the power grid is in the flat value period, start the flat mode, receive a charging pile discharging requirement in the preset region, execute charging pile linkage discharging optimization, and generate a linkage discharging strategy to perform charging pile discharging control; and a charging optimization assembly, the charging optimization assembly being configured to, when the power grid is in the valley value period, start the valley mode, receive a charging pile discharging requirement in the preset region, execute charging pile charging optimization, and generate a charging pile charging strategy to perform charging pile charging control.

Description

The present disclosure claims priority to Chinese patent application No. 2023117381902, entitled "Multi-Mode Charging and Discharging Control Method and System for Charging Piles" filed with the State Intellectual Property Office of P. R. China on December 18, 2023, which is incorporated herein by reference in its entirety. Technical Field The present disclosure relates to the technical field of charging and discharging control, specifically to a multi-mode charging and discharging control method and system for charging piles. Background With the rapid development and application of new energy, electric vehicles have also been widely used. Naturally, the investment and construction of charging piles are increasing, which leads to widespread distribution of charging piles but a lower utilization rate. Traditionally, when charging piles are charged and discharged, the charging piles are usually controlled singly, that is, power grid alternating current charging and energy storage battery charging are switched, which lacks analysis and regulation on the power grid loads, resulting in poor scenario adaptability. Summary The present disclosure provides a multi-mode charging and discharging control method and system for charging piles to solve the technical problem of poor scenario adaptability caused by the lack of analysis and regulation on the power grid loads in the related art. According to a first aspect of the present disclosure, a multi-mode charging and discharging control method for charging piles is provided. The method includes: configuring charging pile charging and discharging modes, wherein the charging pile charging and discharging modes comprise a peak mode, a flat mode and a valley mode; when a preset update period is met, performing a statistics operation on electricity consumption information of a power grid in a preset region in a preset period to obtain a peak value period, a flat value period and a valley value period; when the power grid is in the peak value period, starting the peak mode, receiving a charging pile discharging requirement in the preset region, executing charging pile bidirectional discharging optimization, and generating a charging pile bidirectional discharging strategy to perform charging pile discharging control; when the power grid is in the flat value period, starting the flat mode, receiving a charging pile discharging requirement in the preset region, executing charging pile linkage discharging optimization, and generating a linkage discharging strategy to perform charging pile discharging control; and when the power grid is in the valley value period, starting the valley mode, receiving a charging pile discharging requirement in the preset region, executing charging pile charging optimization, and generating a charging pile charging strategy to perform charging pile charging control. According to a second aspect of the present disclosure, a multi-mode charging and discharging control system for charging piles is provided. The system includes: a charging and discharging mode configuring assembly, the charging and discharging mode configuring assembly being configured to configure charging pile charging and discharging modes, wherein the charging pile charging and discharging modes include a peak mode, a flat mode and a valley mode; an electricity consumption information statistics assembly, the electricity consumption information statistics assembly being configured to, when a preset update period is met, perform a statistics operation on electricity consumption information of a power grid in a preset region in a preset period to obtain a peak value period, a flat value period and a valley value period; a bidirectional discharging optimization assembly, the bidirectional discharging optimization assembly being configured to, when the power grid is in the peak value period, start the peak mode, receive a charging pile discharging requirement in the preset region, execute charging pile bidirectional discharging optimization, and generate a charging pile bidirectional discharging strategy to perform charging pile discharging control; a linkage discharging optimization assembly, the linkage discharging optimization assembly being configured to, when the power grid is in the flat value period, start the flat mode, receive a charging pile discharging requirement in the preset region, execute charging pile linkage discharging optimization, and generate a linkage discharging strategy to perform charging pile discharging control; and a charging optimization assembly, the charging optimization assembly being configured to, when the power grid is in the valley value period, start the valley mode, receive a charging pile discharging requirement in the preset region, execute charging pile charging optimization, and generate a charging pile charging strategy to perform charging pile charging control. According to one or more technical solutions adopted in the present disclosure,