Charging station regulation method and device, storage medium and computer device

Abstract

In a charging station regulation method and device, a storage medium and a computer device provided in the application, if the charging station is in an energy-saving and consumption-reducing mode, the distribution transformer load rate of the charging station is calculated; when the distribution transformer load rate is greater than a distribution transformer load rate threshold, the energy storage device and / or each charging pile in the charging station are regulated according to the size relationship between the storage power and the rated power of the energy storage device corresponding to the charging station; if the charging station is in a regulation demand response mode, the energy storage device and / or each target charging pile are regulated according to the size relationship between the dischargeable time length of the energy storage device and the regulation required time length; when the regulated load of the charging station reaches the regulation required load, or after each target charging pile participates in the regulation, the regulated time length of the charging station does not reach the regulation required time length, the energy storage device and / or each non-target charging pile with a cuttable charging time length not greater than the regulation required time length are regulated. In this way, the regulation requirements of the charging station in different scenarios can be met.

Description

Technical Field

[0001] This application relates to the field of power system technology, and in particular to a charging station control method, device, storage medium and computer equipment. Background Technology

[0002] In the context of dual carbon emissions, electric vehicles and energy storage systems are widely used. Although electric vehicles, as a new type of load, pose a certain challenge to the safe operation of the distribution network—when a large number of electric vehicles are charging simultaneously, it may lead to overload problems in the distribution network, thus affecting the stability and reliability of power supply—their flexible and adjustable characteristics also make them a good target for grid regulation and control. Meanwhile, energy storage applications offer significant energy-saving and loss-reduction potential for flexible load users. Therefore, regulating and controlling charging stations can rationally allocate charging loads and balance the grid load.

[0003] Currently, real-time control methods for charging stations employ objective optimization solutions, but these methods suffer from several drawbacks. First, the high dimensionality of these models leads to lengthy solution times and places significant pressure on terminal and backend computing. Second, these methods have stringent hardware and software requirements, increasing implementation complexity. Furthermore, existing charging station control methods primarily focus on single application scenarios, such as demand response and energy efficiency, lacking strategies to couple and correlate the needs of multiple scenarios. Therefore, it is necessary to improve charging station control methods to better meet the demands of different scenarios. Summary of the Invention

[0004] The purpose of this application is to at least address one of the aforementioned technical deficiencies, particularly the technical deficiency in the prior art that necessitates improvements to the charging station control method to better meet the needs of different scenarios.

[0005] In a first aspect, this application provides a charging station control method, the method comprising:

[0006] Determine the current charging station mode;

[0007] If the charging station is in energy-saving and consumption-reducing mode, the ratio of the operating power of the distribution transformer to the rated operating power of the distribution transformer is calculated to obtain the load rate of the distribution transformer of the charging station.

[0008] When the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, the energy storage device and / or each charging pile in the charging station are regulated according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the distribution transformer load rate after the charging station is regulated is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the regulation when it is necessary to regulate each charging pile.

[0009] If the charging station is in the demand response mode, the energy storage device and / or each target charging pile are regulated according to the predetermined relationship between the discharge time of the energy storage device and the preset regulation time, until the regulated load of the charging station reaches the preset regulation load, or each target charging pile participates in the regulation when it is necessary to regulate each target charging pile. Each target charging pile is selected based on the predetermined reduction time of each charging pile, and the charging piles whose reduction time is greater than the preset regulation time are selected.

[0010] When the load regulated by the charging station reaches the preset load to be regulated, or when each of the target charging piles participates in regulation, and the regulated duration of the charging station has not reached the preset regulation duration, regulation is applied to the energy storage device and / or each non-target charging pile whose charging time can be reduced by no more than the preset regulation duration, until the regulated duration of the charging station reaches the preset regulation duration, or when regulation of each of the non-target charging piles is required and each of the non-target charging piles has participated in regulation.

[0011] In one embodiment, the step of adjusting the energy storage device and / or each charging pile in the charging station based on the obtained relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the adjusted transformer load rate of the charging station is not greater than the preset transformer load rate threshold, or each charging pile has participated in the adjustment when adjustment of each charging pile is required, includes:

[0012] When the stored energy is greater than a preset ratio of the rated energy, the energy storage device is regulated according to the obtained rated discharge power of the energy storage device;

[0013] When the stored power is not greater than a preset proportion of the rated power, or when the distribution transformer load rate after the energy storage device is regulated is greater than a preset distribution transformer load rate threshold, the priority number of each charging pile is determined.

[0014] According to the priority number of each charging pile, each charging pile is adjusted sequentially until the load rate of the distribution transformer after adjustment of the charging station is not greater than the preset load rate threshold of the distribution transformer, or each charging pile has participated in the adjustment.

[0015] In one embodiment, the step of regulating the energy storage device and / or each target charging pile according to the predetermined relationship between the discharge duration of the energy storage device and the preset regulation duration, until the regulated load of the charging station reaches the preset regulation load, or where each target charging pile has participated in regulation when regulation of each target charging pile is required, includes:

[0016] When the discharge duration exceeds the preset controllable duration, the energy storage device is controlled according to the obtained rated discharge power of the energy storage device.

[0017] When the discharge duration is not greater than the preset controllable duration, or when the controlled load of the charging station does not reach the preset controllable load after the energy storage device is controlled, the priority number and power reduction of each charging pile are determined.

[0018] Based on the priority number and power reduction of each charging pile, determine the priority number and power reduction of each target charging pile;

[0019] Based on the priority number of each target charging pile, the power reduction of each target charging pile is adjusted sequentially until the load of the charging station reaches the preset load to be adjusted, or each target charging pile has participated in the adjustment.

[0020] In one embodiment, the step of regulating the energy storage device and / or each non-target charging pile whose charging time can be reduced to no more than the preset required regulation time, until the charging station has reached the preset required regulation time, or where each of the non-target charging piles has participated in regulation when regulation of each of the non-target charging piles is required, includes:

[0021] The energy storage device is regulated according to the obtained rated discharge power of the energy storage device;

[0022] If, after adjusting the energy storage device, the adjusted duration of the charging station has not reached the preset required adjustment duration, then the priority number and power reduction of each charging pile are determined.

[0023] Based on the priority number and power reduction of each charging pile, determine the priority number and power reduction of each non-target charging pile;

[0024] Based on the priority number of each non-target charging pile, the power reduction of each non-target charging pile is adjusted sequentially until the adjustment time of the charging station reaches the preset adjustment time, or each non-target charging pile has participated in the adjustment.

[0025] In one embodiment, the step of determining the priority number of each of the charging piles includes:

[0026] For each charging pile, the remaining charging time of the vehicle corresponding to the charging pile is determined based on the obtained battery capacity, remaining power and current charging power of the vehicle corresponding to the charging pile. The percentage of controlled time of the vehicle corresponding to the charging pile is determined based on the remaining charging time of the vehicle corresponding to the charging pile, the obtained controlled time and charging time of the vehicle corresponding to the charging pile.

[0027] Each charging pile is numbered according to the proportion of controlled time of the vehicle corresponding to each charging pile in ascending order, so as to obtain the priority number of each charging pile.

[0028] In one embodiment, the step of determining the power reduction for each of the charging stations includes:

[0029] For each charging pile, the reduction power of the charging pile is obtained based on the allowable reduction ratio, controlled state and charging power of the vehicle corresponding to the charging pile at the current moment.

[0030] In one embodiment, the process of determining the discharge duration of the energy storage device includes:

[0031] Obtain the current remaining power and rated discharge power of the energy storage device;

[0032] The discharge duration of the energy storage device is obtained based on the remaining power and rated discharge power of the energy storage device at the current moment.

[0033] Secondly, this application provides a charging station control device, the device comprising:

[0034] The charging station mode determination module is used to determine the current mode of the charging station.

[0035] The transformer load rate acquisition module is used to calculate the ratio of the transformer operating power to the rated operating power of the power distribution station if the charging station is in an energy-saving and consumption-reducing mode, and obtain the transformer load rate of the charging station.

[0036] The first control module is used to control the energy storage device and / or each charging pile in the charging station according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station when the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, until the distribution transformer load rate after the control of the charging station is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the control when it is necessary to control each of the charging piles.

[0037] The second control module is used to control the energy storage device and / or each target charging pile according to the predetermined relationship between the discharge time of the energy storage device and the preset control time when the charging station is in the control demand response mode, until the controlled load of the charging station reaches the preset control load, or each target charging pile has participated in the control when it is necessary to control each target charging pile. Each target charging pile is selected from charging piles whose charging time reduction is greater than the preset control time according to the predetermined charging time reduction of each charging pile.

[0038] The third control module is used to control the energy storage device and / or each non-target charging pile whose charging time can be reduced by no more than the preset control time when the controlled load of the charging station reaches the preset control load, or when the controlled time of the charging station after each target charging pile participates in the control, has not reached the preset control time, until the controlled time of the charging station reaches the preset control time, or when each non-target charging pile has participated in the control if it is necessary to control each of the non-target charging piles.

[0039] Thirdly, this application provides a storage medium storing computer-readable instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps of the charging station control method as described in any of the above embodiments.

[0040] Fourthly, this application provides a computer device, including: one or more processors, and a memory;

[0041] The memory stores computer-readable instructions, which, when executed by the one or more processors, perform the steps of the charging station control method as described in any of the above embodiments.

[0042] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0043] In the charging station control method, device, storage medium, and computer equipment provided in this application, the current mode of the charging station is determined. If the charging station is in energy-saving and consumption-reducing mode, the ratio of the operating power of the distribution transformer to the rated operating power of the distribution transformer is calculated to obtain the distribution transformer load rate of the charging station. When the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, the energy storage device and / or each charging pile in the charging station are controlled according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the distribution transformer load rate after the control of the charging station is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the control when control of each charging pile is required. If the charging station is in the control demand response mode, the ratio between the pre-determined discharge time of the energy storage device and the preset control time is calculated. The system regulates the energy storage equipment and / or each target charging pile until the regulated load of the charging station reaches the preset regulated load, or until each target charging pile participates in the regulation when regulation is required. Each target charging pile is selected based on a pre-determined reducible charging time, choosing those whose reducible charging time exceeds the preset regulated time. When the regulated load of the charging station reaches the preset regulated load, or when the regulated time of each target charging pile has not reached the preset regulated time after regulation, the energy storage equipment and / or each non-target charging pile whose reducible charging time is not greater than the preset regulated time are regulated until the regulated time of the charging station reaches the preset regulated time, or until each non-target charging pile participates in the regulation when regulation is required. By determining the current mode of the charging station, different regulation strategies can be adopted for different modes, reducing the dimensionality of the solution model and reducing computation time. Using the distribution transformer load rate as one of the regulation indicators can achieve reasonable control of the distribution transformer operating power. When the distribution transformer load rate exceeds a preset threshold, the energy storage equipment and / or charging piles are regulated to reduce the load rate and ensure the normal operation of the distribution transformer. Regulating the energy storage equipment based on the relationship between its stored capacity and rated capacity allows for better utilization of energy storage resources and improves the energy efficiency of the charging station. In this way, coupling and linking the regulation needs of different scenarios allows for a more comprehensive consideration of the charging station's demand response and energy-saving requirements, making the regulation strategy more flexible and adaptable to different application scenarios. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 A flowchart illustrating the charging station control method provided in an embodiment of this application;

[0046] Figure 2 This is a schematic diagram of the structure of the charging station control device provided in the embodiments of this application;

[0047] Figure 3 This is a schematic diagram of the internal structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0049] This application provides a charging station control method. The following embodiments illustrate this method using a computer device as an example. It is understood that the computer device can be any device with data processing capabilities, including but not limited to a single server, server cluster, personal laptop, desktop computer, etc. Figure 1 As shown, this application provides a charging station control method, the method comprising:

[0050] S101: Determine the current mode of the charging station.

[0051] In this step, the control methods differ depending on the charging station's current mode. Therefore, to control a charging station, it's necessary to first determine its current mode. The method for determining the current mode can be chosen based on the actual situation. In one example, the operating mode can be determined based on the charging station's type and function, such as whether it's a public or private charging station, and whether it's connected to an energy management system or grid dispatch system. Then, by monitoring real-time data from the charging station, including charging pile connection status, charging pile occupancy, current, voltage, and other parameters, the current status information of the charging station can be obtained. Next, based on the obtained charging station status information, combined with preset operating strategies and dispatch rules, the mode of the charging station can be analyzed and determined. For example, the charging pile occupancy and charging demand can be used to determine whether the charging station is in idle mode, fast charging mode, or intelligent dispatch mode.

[0052] S102: If the charging station is in energy-saving and consumption-reducing mode, the ratio of the operating power of the distribution transformer to the rated operating power of the distribution transformer of the charging station is calculated to obtain the distribution transformer load rate of the charging station.

[0053] In this step, when the charging station is in energy-saving mode, it is necessary to first obtain the operating power of the distribution transformer and the rated operating power of the distribution system, and then calculate the ratio of the operating power to the rated operating power to obtain the distribution transformer load rate. The operating power of the distribution transformer refers to the actual operating power of the distribution transformer connected to the charging station, which can be obtained through the charging station's monitoring system or meters. The rated operating power refers to the rated capacity or design capacity of the distribution transformer, i.e., the maximum power the transformer can carry under normal operating conditions, which can be determined by consulting relevant charging station data or asking the charging station management personnel. The distribution transformer load rate is the ratio between the actual operating power of the distribution transformer and the rated operating power, reflecting the load level of the transformer's current operating state, and can be used to assess the transformer's utilization rate and potential overload risk. The calculation expression for the distribution transformer load rate is as follows:

[0054]

[0055] In the formula, μ t For the load factor of the charging station transformer; P trans,t P represents the operating power of the distribution transformer at the charging station at time t. trans,N This refers to the rated operating power of the distribution transformer.

[0056] S103: When the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, the energy storage device and / or each charging pile in the charging station are regulated according to the obtained relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the distribution transformer load rate after the charging station is regulated is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the regulation when it is necessary to regulate each of the charging piles.

[0057] The transformer load rate threshold can be selected according to the actual situation; for example, the transformer load rate threshold can be 80% or 70%.

[0058] In this step, the distribution load rate is compared with a preset distribution transformer load rate threshold. If the distribution transformer load rate is greater than the preset threshold, the stored capacity and rated capacity of the energy storage device at the charging station are further compared. Based on the relationship between the stored capacity and the rated capacity, the control target is determined. This can be controlling only the energy storage device, only the individual charging piles in the charging station, or both. Specifically, controlling the energy storage device can involve utilizing its energy reserves to release some of the energy from the device to the charging piles. Controlling the charging piles can involve reducing or limiting their charging power to decrease the load demand on the distribution transformer at the charging station. During the control process, the distribution transformer load rate of the charging station is monitored in real time to ensure that the load rate after control does not exceed the preset threshold, or that all charging piles are involved in the control process when needed. The stored capacity of the energy storage device refers to the electrical energy currently available for storage, which can be obtained through monitoring systems and software, battery management systems, instruments and displays, and remote monitoring and management systems. The rated capacity of an energy storage device refers to the maximum amount of electricity that the device can hold or output. This can be obtained through device specifications and instructions, data provided by the manufacturer, and device identification and certification.

[0059] Furthermore, if the transformer load is not greater than the preset transformer load rate threshold, it is necessary to determine whether the current time falls within a peak electricity price period. If the current time does not fall within a peak electricity price period, that is, if the current time falls within a low-price or flat-price period, then only charging regulation of the energy storage device can be performed, and the charging power can be the rated charging power of the energy storage device. If the current time falls within a peak electricity price period, then no charging regulation of the energy storage device is performed.

[0060] Furthermore, when regulating energy storage devices, their regulation potential can be considered. In one example, the regulation potential of an energy storage device can be calculated using the following expression:

[0061]

[0062]

[0063] In the formula, and These represent the energy storage charging regulation potential and the discharge regulation potential, respectively; P ES,N，1 and P ES,N,2 These are the rated charging power and rated discharging power of the energy storage device, respectively; W ES,t and W ES,N These represent the stored energy and rated energy of the energy storage device at time t, respectively.

[0064] S104: If the charging station is in the demand response mode, the energy storage device and / or each target charging pile are regulated according to the predetermined relationship between the discharge time of the energy storage device and the preset regulation time, until the regulated load of the charging station reaches the preset regulation load, or each target charging pile participates in the regulation when it is necessary to regulate each target charging pile. Each target charging pile is selected based on the predetermined reduction time of each charging pile, and the charging piles whose reduction time is greater than the preset regulation time are selected.

[0065] In this step, when the charging station is in demand response mode, the current discharge duration of the energy storage device can be determined first. Then, the discharge duration of the energy storage device is compared with the preset control duration to determine whether the energy storage device has sufficient power reserves to meet demand response control. Based on the relationship between the discharge duration and the preset control duration, the control target is determined. This can be controlling only the energy storage device, only the individual target charging piles in the charging station, or both the energy storage device and the individual target charging piles.

[0066] It is understandable that, in order to effectively reduce load and balance electricity demand during demand response, if charging piles need to be regulated, the reduceable charging time for each charging pile can be determined first. Then, based on the reduceable charging time of each charging pile, target charging piles whose charging time reduction exceeds the preset regulation time can be identified. Specifically, regulating energy storage devices can be achieved by adjusting their discharge power, releasing electrical energy from the energy storage devices to charging piles or other loads. Regulating target charging piles can be achieved by reducing or limiting their charging power, thereby reducing the load on distribution transformers. During the regulation process, the regulation load of the charging station, the regulation status of the energy storage devices, and the regulation status of the charging piles are monitored in real time to ensure that the regulated load of the charging station reaches the preset regulation load, or that each target charging pile participates in the regulation process when it is necessary to regulate each target charging pile.

[0067] The discharge duration of energy storage devices can be determined through factors such as rated capacity and load power, charge / discharge efficiency, and remaining capacity. The reduceable charging time of a charging station refers to the time that can be appropriately shortened based on demand and scenario without affecting the normal use of the vehicle. The reduceable charging time of a charging station can be determined through factors such as vehicle battery status, charging rate, charging demand, and charging station control strategies.

[0068] S105: When the controlled load of the charging station reaches the preset controlled load, or when each of the target charging piles participates in the control, and the controlled time of the charging station has not reached the preset controlled time, the energy storage device and / or each non-target charging pile whose charging time can be reduced by no more than the preset controlled time are controlled, until the controlled time of the charging station reaches the preset controlled time, or when each of the non-target charging piles needs to be controlled, each of the non-target charging piles has participated in the control.

[0069] In this step, if the load of the charging station has been regulated to the preset load that needs to be regulated or each target charging pile has participated in the regulation, but the regulation time has not yet reached the preset regulation time, then the energy storage device can be regulated, or each non-target charging pile can be regulated, or both the energy storage device and each non-target charging pile can be regulated.

[0070] It's understandable that priority should be given to regulating target charging stations with reduced charging time to minimize the impact on the charging experience for car owners. Once target charging stations are included in the regulation, non-target charging stations are then regulated to further optimize the effect. This balances charging efficiency and user demand throughout the regulation process. When identifying non-target charging stations, the reduced charging time for each station can be determined first. Then, based on the reduced charging time for each station, target charging stations with a reduced charging time not exceeding the preset required regulation time can be identified. Regulation of energy storage devices can be achieved by increasing their discharge power or discharge time, releasing more energy to charging stations or other loads to meet demand response requirements. Regulation of non-target charging stations can be achieved by appropriately adjusting their charging power or charging time. By limiting the charging speed or charging time of these non-target charging stations, the load can be further reduced until the preset required regulation time is reached. During the regulation process, the regulation duration of the charging station, the regulation status of the energy storage device, and the regulation status of the charging pile are monitored in real time. When the regulation duration of the charging station reaches the preset required regulation duration, or when each non-target charging pile has participated in the regulation in the case of needing to regulate each non-target charging pile, the regulation of the current stage can be ended.

[0071] In the above embodiments, the current mode of the charging station is determined. If the charging station is in energy-saving mode, the ratio of the operating power of the distribution transformer to the rated operating power of the distribution transformer is calculated to obtain the distribution transformer load rate of the charging station. When the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, the energy storage device and / or each charging pile in the charging station are regulated according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the distribution transformer load rate after regulation is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in regulation when regulation is required. If the charging station is in regulation demand response mode, the energy storage device and / or each charging pile in the charging station are regulated according to the relationship between the pre-determined discharge time of the energy storage device and the preset regulation time. Each target charging pile is regulated until the regulated load of the charging station reaches the preset regulated load, or each target charging pile participates in the regulation when regulation is required. Each target charging pile is selected based on its pre-determined reducible charging time, choosing those whose reducible charging time is greater than the preset regulated time. When the regulated load of the charging station reaches the preset regulated load, or when the regulated time of each target charging pile has not reached the preset regulated time after regulation, regulation is applied to the energy storage equipment and / or each non-target charging pile whose reducible charging time is not greater than the preset regulated time, until the regulated time of the charging station reaches the preset regulated time, or when regulation of each non-target charging pile is required, each non-target charging pile participates in the regulation. By determining the current mode of the charging station, different regulation strategies can be adopted for different modes, reducing the dimensionality of the solution model and reducing computation time. Using the distribution transformer load rate as one of the regulation indicators can achieve reasonable control of the distribution transformer operating power. When the distribution transformer load rate exceeds a preset threshold, the energy storage equipment and / or charging piles are regulated to reduce the load rate and ensure the normal operation of the distribution transformer. Regulating the energy storage equipment based on the relationship between its stored capacity and rated capacity allows for better utilization of energy storage resources and improves the energy efficiency of the charging station. In this way, coupling and linking the regulation needs of different scenarios allows for a more comprehensive consideration of the charging station's demand response and energy-saving requirements, making the regulation strategy more flexible and adaptable to different application scenarios.

[0072] In one embodiment, the step of adjusting the energy storage device and / or each charging pile in the charging station based on the obtained relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the adjusted transformer load rate of the charging station is not greater than the preset transformer load rate threshold, or where each charging pile has participated in the adjustment when adjustment of each charging pile is required, includes:

[0073] When the stored energy is greater than a preset ratio of the rated energy, the energy storage device is regulated according to the obtained rated discharge power of the energy storage device;

[0074] When the stored power is not greater than a preset proportion of the rated power, or when the distribution transformer load rate after the energy storage device is regulated is greater than a preset distribution transformer load rate threshold, the priority number of each charging pile is determined.

[0075] According to the priority number of each charging pile, each charging pile is adjusted sequentially until the load rate of the distribution transformer after adjustment of the charging station is not greater than the preset load rate threshold of the distribution transformer, or each charging pile has participated in the adjustment.

[0076] The preset percentage of the rated power can be selected according to the actual situation, for example, it can be 10% or 20%.

[0077] Specifically, when the transformer load rate exceeds a preset threshold, if the stored capacity of the energy storage device exceeds a preset percentage of its rated capacity, the energy storage device will be preferentially regulated based on its rated discharge power. The rated discharge power of the energy storage device refers to the maximum power it can output during discharge, which can be obtained from the device's technical manual, manufacturer-provided parameters, and test data. If the transformer load rate still exceeds the preset threshold after the energy storage device discharges, further regulation will be applied to each charging pile. The power of each charging pile will be adjusted sequentially based on its priority number until the transformer load rate after regulation is no greater than the preset threshold or all charging piles have participated in the current regulation. The priority number for each charging pile can be designed and adjusted according to different scenarios and needs. For example, factors such as charging demand, user demand, and time factors can be considered to assign a corresponding priority number to each charging pile.

[0078] If the stored energy of the energy storage device is not greater than a preset proportion of the rated energy, then the charging pile is directly regulated. Similarly, the charging pile power is adjusted sequentially according to the priority number of each charging pile until the transformer load rate after the charging station regulation is not greater than the preset transformer load rate threshold or all charging piles have participated in the regulation at the current moment.

[0079] In this embodiment, when the stored energy of the energy storage device exceeds a preset proportion of the rated energy, the energy storage device is regulated according to the rated discharge power. This fully utilizes the stored energy, ensuring its rational use and maximizing power supply. The regulation sequence is determined based on the priority number of the charging piles, and each charging pile is regulated sequentially. This balances the load among the charging piles, preventing unbalanced loads on other charging piles due to overloading of one pile, ensuring the transformer load remains within a reasonable range, and improving the stability and reliability of the transformer equipment.

[0080] In one embodiment, the step of regulating the energy storage device and / or each target charging pile according to the predetermined relationship between the discharge duration of the energy storage device and the preset regulation duration, until the regulated load of the charging station reaches the preset regulation load, or where each target charging pile has participated in regulation when regulation of each target charging pile is required, includes:

[0081] When the discharge duration exceeds the preset controllable duration, the energy storage device is controlled according to the obtained rated discharge power of the energy storage device.

[0082] When the discharge duration is not greater than the preset controllable duration, or when the controlled load of the charging station does not reach the preset controllable load after the energy storage device is controlled, the priority number and power reduction of each charging pile are determined.

[0083] Based on the priority number and power reduction of each charging pile, determine the priority number and power reduction of each target charging pile;

[0084] Based on the priority number of each target charging pile, the power reduction of each target charging pile is adjusted sequentially until the load of the charging station reaches the preset load to be adjusted, or each target charging pile has participated in the adjustment.

[0085] Specifically, when a charging station is in demand response mode, i.e., participating in demand response scheduling, a control plan can be formulated based on the preset controllable load and preset control duration. Specifically, if the discharge duration of the energy storage device exceeds the preset control duration, the energy storage device is prioritized for control, and control is performed according to its rated discharge power. If, after controlling the energy storage device, the controlled load reaches the preset controllable load, no further control of the charging piles is required. If, after controlling the energy storage device, the controlled load does not reach the preset control load, further control of the charging piles is necessary. Based on priority numbers, target charging piles whose charging time can be reduced beyond the preset control duration are targeted, and control is performed on these target charging piles according to a predetermined reduction power until, after control, the controlled load of the charging station reaches the preset control load, or each target charging pile participates in the current moment's control. The reduction power of the charging pile refers to the maximum power that can be reduced from the charging pile in demand response mode. Determining the reduction power of the charging pile can consider the maximum output power of the charging pile, the actual charging demand of the charging pile, the status of the energy storage device, and the total load of the charging station.

[0086] If the discharge time of the energy storage device does not exceed the preset control time, the charging pile is controlled first. Similarly, based on the priority number, the target charging pile whose charging time can be reduced by more than the preset control time is taken as the object, and the target charging pile is controlled according to the predetermined reduction power until the control is completed and the load of the charging station reaches the preset control load, or each target charging pile has participated in the control at the current moment.

[0087] In this embodiment, when the discharge duration of the energy storage device exceeds the preset control duration, it is controlled according to the rated discharge power of the energy storage device. This fully utilizes the energy storage capacity of the device to provide the required power supply and reduces dependence on other power sources. When the discharge duration of the energy storage device is insufficient to meet the control requirements or the control load does not reach the preset control load, the load of the charging piles can be reasonably allocated and controlled by determining the priority number and power reduction of each charging pile. This allows for flexible adjustment of the charging pile usage, ensuring overall load balance of the charging station and improving resource utilization efficiency. By controlling each target charging pile sequentially according to its priority number and power reduction, until the preset control load is reached or all target charging piles participate in the control, the desired control effect can be gradually achieved, reducing the impact and instability on the system.

[0088] In one embodiment, the step of regulating the energy storage device and / or each non-target charging pile whose charging time can be reduced to no more than the preset required regulation time, until the charging station has reached the preset required regulation time, or where each of the non-target charging piles has participated in regulation when regulation of each of the non-target charging piles is required, includes:

[0089] The energy storage device is regulated according to the obtained rated discharge power of the energy storage device;

[0090] If, after adjusting the energy storage device, the adjusted duration of the charging station has not reached the preset required adjustment duration, then the priority number and power reduction of each charging pile are determined.

[0091] Based on the priority number and power reduction of each charging pile, determine the priority number and power reduction of each non-target charging pile;

[0092] Based on the priority number of each non-target charging pile, the power reduction of each non-target charging pile is adjusted sequentially until the adjustment time of the charging station reaches the preset adjustment time, or each non-target charging pile has participated in the adjustment.

[0093] Specifically, if the charging station's regulated load has reached the preset regulated load, or if the regulated time for each target charging pile has not yet reached the preset regulated time after regulated operation, then the energy storage device will be regulated first according to its rated discharge power. If the regulated time for the charging station still does not reach the preset regulated time after regulated energy storage device operation, further regulation of the charging piles is required. Based on priority numbering, non-target charging piles whose charging time can be reduced by no more than the preset regulated time will be targeted, and regulated according to a predetermined reduction power, until the regulated time for the charging station reaches the preset regulated time, or each non-target charging pile has participated in the current regulated operation.

[0094] In this embodiment, by regulating the energy storage device according to its rated discharge power, the discharge capacity of the energy storage device can be maximized to provide the required power supply, reduce dependence on other power sources, and increase the utilization efficiency of the energy storage device. When the regulation time of the energy storage device does not reach the preset regulation time, the priority number and power reduction of each charging pile are determined. The load of the charging piles can be flexibly allocated and controlled according to their importance and demand, ensuring the power supply stability of critical equipment. According to the priority number and power reduction of non-target charging piles, each non-target charging pile is regulated sequentially to gradually regulate them, effectively controlling the impact and instability on the system during the regulation process, while ensuring that the regulation time of the charging station reaches the preset requirement. By gradually regulating the non-target charging piles until the regulation time of the charging station reaches the preset requirement, or when each non-target charging pile participates in the regulation, the regulation effect is maximized, and the regulation sequence of the charging piles is optimized under limited resources to achieve load balance and efficient resource utilization of the charging station.

[0095] In one embodiment, the step of determining the priority number of each of the charging piles includes:

[0096] For each charging pile, the remaining charging time of the vehicle corresponding to the charging pile is determined based on the obtained battery capacity, remaining power and current charging power of the vehicle corresponding to the charging pile. The percentage of controlled time of the vehicle corresponding to the charging pile is determined based on the remaining charging time of the vehicle corresponding to the charging pile, the obtained controlled time and charging time of the vehicle corresponding to the charging pile.

[0097] Each charging pile is numbered according to the proportion of controlled time of the vehicle corresponding to each charging pile in ascending order, so as to obtain the priority number of each charging pile.

[0098] Specifically, when determining the priority number of each charging station, the vehicle corresponding to each charging station is first identified. Then, the battery capacity, remaining charge, and current charging power of each vehicle are collected to determine the remaining charging time for each vehicle. Next, the controlled charging time and already charged charging time of each vehicle are collected. Based on the remaining charging time, controlled charging time, and already charged charging time, the percentage of controlled charging time for each vehicle is determined. Finally, each charging station is numbered according to the percentage of controlled charging time for each vehicle, from lowest to highest, thus obtaining the priority number for each charging station.

[0099] In one example, the vehicle battery capacity W is collected. EV,N,m Remaining battery power (W) of the vehicle EV,m,t and the vehicle's current charging power P EV,m,tThe remaining charging time for the vehicle at the current charging power is calculated using the following expression:

[0100]

[0101] In the formula, T EV,m,t For vehicle m, the remaining charging time is determined by the current charging power; P EV,m,t This represents the vehicle's current charging power (m). If it's fast charging, then it's P. fast,m,t If it is a slow charge, then it is P. slow,m,t .

[0102] Then, calculate the percentage of controlled time for each vehicle using the following expression:

[0103]

[0104] In the formula, η m,t This represents the percentage of time vehicle m is under control at time t. The duration the vehicle has been under control; The duration the vehicle has been charging.

[0105] Based on the percentage of controlled time for all vehicles η m,t Sort from low to high, from 1, 2, ..., N m,t Priority numbering is performed.

[0106] Furthermore, the remaining shortest charging time for a vehicle currently charging can also be calculated. In one example, the remaining shortest charging time for a vehicle currently charging can be calculated using the following expression:

[0107]

[0108]

[0109] In the formula, T EV,m,t,min The estimated minimum remaining charging time for vehicle m at time t; W EV,N,m The battery capacity of vehicle m; W EV,m,t Let m be the remaining battery power of vehicle m at time t; The maximum charging power of vehicle m depends on the upper limit of charging power P that the vehicle can withstand. EV,N,m The rated power of the charging station also depends on the type of charging station selected by vehicle m, including fast charging stations and slow charging stations. If it is a fast charging station, the maximum charging power of vehicle m is... For the maximum charging power P that can be tolerated EV,N,m and the rated power P of the fast charging pile fast,N,m The minimum value in the range; if it is a slow charging station, then the maximum charging power of vehicle m. For the maximum charging power P that can be tolerated EV,N,m The minimum value P in the rated power of the slow charging pileslow,N,m .

[0110] In this embodiment, by comprehensively considering the vehicle's charging needs and charging status, determining the remaining charging time, and calculating the controlled time percentage, the importance and demand of each charging pile to the vehicle can be more accurately assessed. This allows for assigning a priority number to each charging pile, thereby rationally allocating and regulating resources to ensure that critical vehicles receive priority in meeting their charging needs.

[0111] In one embodiment, the step of determining the power reduction for each of the charging stations includes:

[0112] For each charging pile, the reduction power of the charging pile is obtained based on the allowable reduction ratio, controlled state and charging power of the vehicle corresponding to the charging pile at the current moment.

[0113] Specifically, when determining the power reduction for each charging station, the vehicle corresponding to each charging station is first identified, and then the allowable reduction ratio, controlled state, and charging power of each vehicle at the current moment are obtained. Afterwards, the power reduction for each charging station can be calculated based on the allowable reduction ratio, controlled state, and charging power of each vehicle at the current moment.

[0114] In one example, the permissible reduction percentage for each vehicle at the current moment is collected. Controlled state β m,t and charging power P EV,m,t The power reduction is calculated according to the following expression:

[0115]

[0116] In the formula, The peak shaving potential at time t; β represents the permissible reduction percentage at time t, ranging from 0% to 100%, provided by the vehicle user; m,t P represents the controlled state at time t, which can be either 0 or 1. A value of 0 indicates that the user is not allowed to be controlled, while a value of 1 indicates that the user is allowed to be controlled. EV,m,t This represents the current charging power; if it's fast charging, it's P. fast,m,t If it is a slow charge, then it is P. slow,m,t .

[0117] Furthermore, the reduction potential of the vehicle cluster within the charging station can also be calculated. In one example, the reduction potential of the vehicle cluster within the charging station is calculated using the following expression:

[0118]

[0119] In the formula, N represents the peak shaving potential of the electric vehicle cluster at time t;EV,t Let t be the number of electric vehicles charging at time t.

[0120] In this embodiment, the power reduction of the charging pile is determined based on the allowable reduction ratio, controlled state, and charging power of the vehicle corresponding to the charging pile at the current moment. The power output of the charging pile can be flexibly adjusted according to the actual situation to avoid resource waste and inefficiency.

[0121] In one embodiment, the process of determining the discharge duration of the energy storage device includes:

[0122] Obtain the current remaining power and rated discharge power of the energy storage device;

[0123] The discharge duration of the energy storage device is obtained based on the remaining power and rated discharge power of the energy storage device at the current moment.

[0124] Specifically, when determining the discharge duration of an energy storage device, the remaining power and rated discharge power of the energy storage device at the current moment are obtained first, and then the discharge duration of the energy storage device is obtained based on the remaining power and rated discharge power of the energy storage device at the current moment.

[0125] In one example, the remaining power and rated discharge power of the energy storage device at the current moment are collected, and the discharge duration of the energy storage device is calculated according to the following expression:

[0126]

[0127] In the formula, T ES,2,t，min P represents the estimated shortest future discharge duration of the energy storage device at time t. ES,N,2 Rated discharge power of energy storage equipment; W ES,t This represents the remaining power of the energy storage device at the current moment.

[0128] Furthermore, the rechargeable duration of the energy storage device can also be calculated. In one example, the rechargeable duration of the energy storage device can be calculated using the following expression:

[0129]

[0130] In the formula, T ES,1,t,min The shortest possible charging time for the energy storage device at time t; P ES,N，1 Rated charging power for energy storage devices; W ES,N This refers to the capacity of the energy storage device.

[0131] In this embodiment, by obtaining the current remaining power and rated discharge power of the energy storage device, the user can know how long the energy storage device can continue to supply power, so as to better plan energy use and avoid energy shortages or waste.

[0132] The charging station control device provided in the embodiments of this application is described below. The charging station control device described below can be referred to in correspondence with the charging station control method described above. For example Figure 2 As shown, this application provides a charging station control device, the device comprising:

[0133] The charging station mode determination module 201 is used to determine the current mode of the charging station.

[0134] The transformer load rate acquisition module 202 is used to calculate the ratio of the transformer operating power to the rated operating power of the power distribution station if the charging station is in an energy-saving and consumption-reducing mode, and obtain the transformer load rate of the charging station.

[0135] The first control module 203 is used to control the energy storage device and / or each charging pile in the charging station according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station when the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, until the distribution transformer load rate after the control of the charging station is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the control when it is necessary to control each of the charging piles.

[0136] The second control module 204 is used to control the energy storage device and / or each target charging pile according to the predetermined relationship between the discharge time of the energy storage device and the preset control time if the charging station is in the control demand response mode, until the controlled load of the charging station reaches the preset control load, or each target charging pile has participated in the control when it is necessary to control each target charging pile. Each target charging pile is selected from charging piles whose charging time reduction is greater than the preset control time according to the predetermined charging time reduction of each charging pile.

[0137] The third control module 205 is used to control the energy storage device and / or each non-target charging pile whose charging time can be reduced by no more than the preset control time when the controlled load of the charging station reaches the preset control load, or when the controlled time of the charging station after each target charging pile participates in the control does not reach the preset control time, until the controlled time of the charging station reaches the preset control time, or when each non-target charging pile has participated in the control if it is necessary to control each of the non-target charging piles.

[0138] In one embodiment, the first control module 203 includes:

[0139] The first energy storage device control module is used to control the energy storage device according to the obtained rated discharge power of the energy storage device when the stored power is greater than a preset ratio of the rated power.

[0140] The priority number determination unit is used to determine the priority number of each charging pile when the stored power is not greater than a preset proportion of the rated power, or when the distribution transformer load rate after the energy storage device is regulated is greater than a preset distribution transformer load rate threshold.

[0141] The first charging pile control unit is used to control each charging pile sequentially according to the priority number of each charging pile until the load rate of the distribution transformer after the control of the charging station is not greater than the preset load rate threshold of the distribution transformer, or each charging pile has participated in the control.

[0142] In one embodiment, the second control module 204 includes:

[0143] The second energy storage device control unit is used to control the energy storage device according to the obtained rated discharge power of the energy storage device when the discharge duration exceeds the preset control duration.

[0144] The power reduction determination unit is used to determine the priority number and power reduction of each charging pile when the discharge duration is not greater than the preset controllable duration, or when the controlled load of the charging station does not reach the preset controllable load after the energy storage device is controlled.

[0145] The target charging pile priority number determination unit is used to determine the priority number and reduction power of each target charging pile based on the priority number and reduction power of each charging pile.

[0146] The second charging pile control unit is used to control each target charging pile sequentially according to the priority number of each target charging pile and the power reduction of each target charging pile, until the controlled load of the charging station reaches the preset control load, or each target charging pile has participated in the control.

[0147] In one embodiment, the third control module includes:

[0148] The third energy storage device control unit is used to control the energy storage device according to the obtained rated discharge power of the energy storage device;

[0149] The power reduction determination unit is used to determine the priority number and power reduction of each charging pile if the charging station has not reached the preset required adjustment time after the energy storage device has been adjusted.

[0150] The non-target charging pile priority number determination unit is used to determine the priority number and power reduction of each non-target charging pile based on the priority number and power reduction of each charging pile.

[0151] The third charging pile control unit is used to control each non-target charging pile in sequence according to the priority number of each non-target charging pile and the power reduction of each non-target charging pile, until the control time of the charging station reaches the preset control time, or each non-target charging pile has participated in the control.

[0152] In one embodiment, the priority number determination unit includes:

[0153] The controlled duration percentage determination subunit is used to determine the remaining charging time of the vehicle corresponding to the charging pile for each charging pile based on the obtained battery capacity, remaining power and current charging power of the vehicle corresponding to the charging pile, and to determine the controlled duration percentage of the vehicle corresponding to the charging pile based on the remaining charging time of the vehicle corresponding to the charging pile, the obtained controlled duration and charging time of the vehicle corresponding to the charging pile.

[0154] The priority numbering subunit is used to number each charging pile in ascending order of the controlled duration percentage of the vehicle corresponding to each charging pile, thereby obtaining the priority number of each charging pile.

[0155] In one embodiment, the power reduction determination unit includes:

[0156] The power reduction determination subunit is used to determine the power reduction of each charging pile based on the allowable reduction ratio, controlled state and charging power of the vehicle corresponding to the charging pile at the current moment.

[0157] In one embodiment, the second control module includes:

[0158] An energy storage device parameter acquisition unit is used to acquire the current remaining power and rated discharge power of the energy storage device.

[0159] The discharge duration determination unit is used to determine the discharge duration of the energy storage device based on the remaining power and rated discharge power of the energy storage device at the current moment.

[0160] In one embodiment, this application also provides a storage medium storing computer-readable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the charging station control method as described in any of the above embodiments.

[0161] In one embodiment, this application also provides a computer device storing computer-readable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the charging station control method as described in any of the above embodiments.

[0162] Indicatively, such as Figure 3 As shown, Figure 3 This is a schematic diagram of the internal structure of a computer device 300 provided in an embodiment of this application. The computer device 300 can be provided as a server. (Refer to...) Figure 3 The computer device 300 includes a processing component 302, which further includes one or more processors, and memory resources represented by memory 301 for storing instructions, such as application programs, that can be executed by the processing component 302. The application programs stored in memory 301 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 302 is configured to execute instructions to perform the charging station control method of any of the above embodiments.

[0163] The computer device 300 may also include a power supply component 303 configured to perform power management of the computer device 300, a wired or wireless network interface 304 configured to connect the computer device 300 to a network, and an input / output (I / O) interface 305. The computer device 300 may operate on an operating system stored in memory 301, such as Windows Server™, Mac OS X™, Unix™, Linux™, Free BSD™, or similar.

[0164] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0165] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this document, "a," "an," "the," "the," and "its" may also include plural forms unless the context clearly indicates otherwise. "Multiple" refers to at least two, such as 2, 3, 5, or 8, etc. "And / or" includes any and all combinations of the related listed items.

[0166] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0167] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A charging station control method, characterized in that, The method includes: Determine the current charging station mode; If the charging station is in energy-saving and consumption-reducing mode, the ratio of the operating power of the distribution transformer to the rated operating power of the distribution transformer is calculated to obtain the load rate of the distribution transformer of the charging station. When the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, the energy storage device and / or each charging pile in the charging station are regulated according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the distribution transformer load rate after the charging station is regulated is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the regulation when it is necessary to regulate each charging pile. If the charging station is in the demand response mode, the energy storage device and / or each target charging pile are regulated according to the predetermined relationship between the discharge time of the energy storage device and the preset regulation time, until the regulated load of the charging station reaches the preset regulation load, or each target charging pile participates in the regulation when it is necessary to regulate each target charging pile. Each target charging pile is selected based on the predetermined reduction time of each charging pile, and the charging piles whose reduction time is greater than the preset regulation time are selected. When the load regulated by the charging station reaches the preset load to be regulated, or when each of the target charging piles participates in the regulation and the regulated duration of the charging station has not reached the preset regulated duration, the energy storage device is regulated according to the obtained rated discharge power of the energy storage device. If, after adjusting the energy storage device, the adjusted duration of the charging station has not reached the preset required adjustment duration, then the priority number and power reduction of each charging pile are determined. Based on the priority number and power reduction of each charging station, determine the priority number and power reduction of each non-target charging station; Based on the priority number of each non-target charging pile, the power reduction of each non-target charging pile is adjusted sequentially until the adjustment time of the charging station reaches the preset adjustment time, or each non-target charging pile has participated in the adjustment.

2. The charging station control method according to claim 1, characterized in that, The step of adjusting the energy storage device and / or each charging pile in the charging station according to the obtained relationship between the stored power and the rated power of the energy storage device corresponding to the charging station, until the adjusted transformer load rate of the charging station is not greater than the preset transformer load rate threshold, or each charging pile has participated in the adjustment when adjustment of each charging pile is required, includes: When the stored energy is greater than a preset ratio of the rated energy, the energy storage device is regulated according to the obtained rated discharge power of the energy storage device; When the stored power is not greater than a preset proportion of the rated power, or when the distribution transformer load rate after the energy storage device is regulated is greater than a preset distribution transformer load rate threshold, the priority number of each charging pile is determined. According to the priority number of each charging pile, each charging pile is adjusted sequentially until the load rate of the distribution transformer after adjustment of the charging station is not greater than the preset load rate threshold of the distribution transformer, or each charging pile has participated in the adjustment.

3. The charging station control method according to claim 1, characterized in that, The step of regulating the energy storage device and / or each target charging pile according to the predetermined relationship between the discharge duration of the energy storage device and the preset regulation duration, until the regulated load of the charging station reaches the preset regulation load, or where each target charging pile has participated in regulation when regulation of each target charging pile is required, includes: When the discharge duration exceeds the preset controllable duration, the energy storage device is controlled according to the obtained rated discharge power of the energy storage device. When the discharge duration is not greater than the preset controllable duration, or when the controlled load of the charging station does not reach the preset controllable load after the energy storage device is controlled, the priority number and power reduction of each charging pile are determined. Based on the priority number and power reduction of each charging pile, determine the priority number and power reduction of each target charging pile; Based on the priority number of each target charging pile, the power reduction of each target charging pile is adjusted sequentially until the load of the charging station reaches the preset load to be adjusted, or each target charging pile has participated in the adjustment.

4. The charging station control method according to any one of claims 2 to 3, characterized in that, The step of determining the priority number of each charging pile includes: For each charging pile, the remaining charging time of the vehicle corresponding to the charging pile is determined based on the obtained battery capacity, remaining power and current charging power of the vehicle corresponding to the charging pile. The percentage of controlled time of the vehicle corresponding to the charging pile is determined based on the remaining charging time of the vehicle corresponding to the charging pile, the obtained controlled time and charging time of the vehicle corresponding to the charging pile. Each charging pile is numbered according to the proportion of controlled time of the vehicle corresponding to each charging pile in ascending order, so as to obtain the priority number of each charging pile.

5. The charging station control method according to claim 1 or 3, characterized in that, The step of determining the power reduction for each of the charging piles includes: For each charging pile, the reduction power of the charging pile is obtained based on the allowable reduction ratio, controlled state and charging power of the vehicle corresponding to the charging pile at the current moment.

6. The charging station control method according to any one of claims 1 to 3, characterized in that, The process of determining the discharge duration of the energy storage device includes: Obtain the current remaining power and rated discharge power of the energy storage device; The discharge duration of the energy storage device is obtained based on the remaining power and rated discharge power of the energy storage device at the current moment.

7. A charging station control device, characterized in that, The device includes: The charging station mode determination module is used to determine the current mode of the charging station. The transformer load rate acquisition module is used to calculate the ratio of the transformer operating power to the rated operating power of the power distribution station if the charging station is in an energy-saving and consumption-reducing mode, and obtain the transformer load rate of the charging station. The first control module is used to control the energy storage device and / or each charging pile in the charging station according to the relationship between the stored power and the rated power of the energy storage device corresponding to the charging station when the distribution transformer load rate is greater than the preset distribution transformer load rate threshold, until the distribution transformer load rate after the control of the charging station is not greater than the preset distribution transformer load rate threshold, or each charging pile has participated in the control when it is necessary to control each of the charging piles. The second control module is used to control the energy storage device and / or each target charging pile according to the predetermined relationship between the discharge time of the energy storage device and the preset control time when the charging station is in the control demand response mode, until the controlled load of the charging station reaches the preset control load, or each target charging pile has participated in the control when it is necessary to control each target charging pile. Each target charging pile is selected from charging piles whose charging time reduction is greater than the preset control time according to the predetermined charging time reduction of each charging pile. The third control module is used to control the energy storage device according to the obtained rated discharge power of the energy storage device when the controlled load of the charging station reaches the preset control load, or when the controlled time of the charging station after each target charging pile participates in the control does not reach the preset control time. If, after adjusting the energy storage device, the adjusted duration of the charging station has not reached the preset required adjustment duration, then the priority number and power reduction of each charging pile are determined. Based on the priority number and power reduction of each charging station, determine the priority number and power reduction of each non-target charging station; Based on the priority number of each non-target charging pile, the power reduction of each non-target charging pile is adjusted sequentially until the adjustment time of the charging station reaches the preset adjustment time, or each non-target charging pile has participated in the adjustment.

8. A storage medium, characterized in that: The storage medium stores computer-readable instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps of the charging station control method as described in any one of claims 1 to 6.

9. A computer device, characterized in that, include: One or more processors, and memory; The memory stores computer-readable instructions, which, when executed by the one or more processors, perform the steps of the charging station control method as described in any one of claims 1 to 6.

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