A battery energy storage coordination control method and device and related equipment

Abstract

The application discloses a battery energy storage coordinated control method and device and related equipment. The method comprises the following steps: acquiring compensation power of a power system, wherein the compensation power is used for representing the power difference between a power generation unit and a power consumption unit in the power system; determining the operation mode of an energy storage unit in the power system according to the rated interactive power of each battery energy storage in the energy storage unit and the compensation power; and determining the interactive power of each battery energy storage based on the operation mode, the state of charge and the rated interactive power of each battery energy storage. Since the state of charge and the rated interactive power of each battery energy storage are considered when the interactive power of each battery energy storage is determined, the state of charge of each battery energy storage connected in parallel in the energy storage unit gradually tends to be the same, and the situation that the state of charge of a certain battery energy storage reaches 100% while the state of charge of other battery energy storages is far less than 100% is avoided, which is beneficial to guarantee the safe operation of the battery energy storage and prolong the service life of the battery energy storage.

Description

Technical Field

[0001] This application relates to the field of energy storage system technology, and more specifically, to a battery energy storage coordinated control method, device and related equipment. Background Technology

[0002] In new power systems, the integration of new energy sources such as wind and solar power is increasing. Due to the uncertainty of wind and solar power output and the difficulty in real-time and accurate prediction of power supply and demand, energy storage units are needed to regulate system power and ensure safe and stable operation. Battery energy storage is one of the most common forms of energy storage, requiring that the state of charge (SOC) of the battery storage be less than 100% and that the output power not exceed the rated value. When multiple battery storage systems operate in parallel, the traditional approach is to distribute the system's dynamic power equally among them, or proportionally according to their rated capacity. However, this method may cause some battery storage systems to reach 100% SOC, resulting in unbalanced operation and affecting their lifespan.

[0003] How to coordinate and control the parallel-operated battery energy storage systems in new power systems to avoid situations where one battery energy storage system reaches 100% SOC while others have SOCs far below 100%, in order to ensure the safe operation of battery energy storage, extend its service life, and ultimately guarantee the safe, stable, and economical operation of the new power system, is a key issue that needs to be addressed. Summary of the Invention

[0004] In view of this, this application provides a battery energy storage coordinated control method, apparatus and related equipment to achieve coordinated control of the energy storage of each battery in the energy storage unit.

[0005] To achieve the above objectives, the first aspect of this application provides a battery energy storage coordinated control method, comprising:

[0006] Obtain the compensation power of the power system, which is used to characterize the power difference between the power generation unit and the power consumption unit in the power system;

[0007] The operating mode of the energy storage unit is determined based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power.

[0008] Based on the aforementioned operating mode, and considering the state of charge and rated interactive power of each battery energy storage unit, the interactive power of each battery energy storage unit is determined.

[0009] Preferably, the process of determining the operating mode of the energy storage unit based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power includes:

[0010] The operating mode S of the energy storage unit is determined using the following equation:

[0011]

[0012] Where ΔP is the absolute value of the compensation power; in indicates that the compensation power is positive; out indicates that the compensation power is negative; Let n be the rated interactive power of the i-th battery energy storage; n is the total number of battery energy storage units connected in parallel in the energy storage unit; model1 is the first mode, used to constrain the charging mode when the compensation power is less than the rated interactive power; model2 is the second mode, used to constrain the discharging mode when the compensation power is less than the rated interactive power; model3 is the third mode, used to constrain the charging mode when the compensation power is between the rated interactive power and the total rated interactive power; model4 is the fourth mode, used to constrain the discharging mode when the compensation power is less than the rated interactive power; model5 is the fifth mode, used to constrain the charging and discharging modes when the compensation power is greater than the total rated interactive power.

[0013] Preferably, the operating mode is a first mode; the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, includes:

[0014] The charging power P of the i-th battery is determined using the following equation. i :

[0015]

[0016] Among them, SOC i Let ΔP be the state of charge of the i-th battery energy storage unit, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit.

[0017] Preferably, the operating mode is the second mode; the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, includes:

[0018] The discharge power P of the i-th battery is determined using the following equation. i :

[0019]

[0020] Among them, SOC i Let ΔP be the state of charge of the i-th battery energy storage unit, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit.

[0021] Preferably, the operating mode is the third mode; the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, includes:

[0022] The charging power P of the i-th battery is determined using the following equation. i :

[0023]

[0024] Among them, SOC i Let be the state of charge of the i-th battery energy storage, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit. Let i be the rated interactive power of the i-th battery energy storage.

[0025] Preferably, the operating mode is the fourth mode; the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, includes:

[0026] The discharge power P of the i-th battery is determined using the following equation. i :

[0027]

[0028] Among them, SOC i Let be the state of charge of the i-th battery energy storage, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit. Let i be the rated interactive power of the i-th battery energy storage.

[0029] Preferably, the operating mode is the fifth mode; the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, includes:

[0030] The interaction power P of the i-th battery energy storage is determined using the following equation. i :

[0031]

[0032] in, Let i be the rated interactive power of the i-th battery energy storage.

[0033] A second aspect of this application provides a battery energy storage coordination control device, comprising:

[0034] The compensation power acquisition unit is used to acquire the compensation power of the power system, wherein the compensation power is used to characterize the power difference between the power generation unit and the power consumption unit in the power system;

[0035] An operation mode determination unit is used to determine the operation mode of the energy storage unit based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power.

[0036] The interaction power determination unit is used to determine the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge of each battery energy storage unit and the rated interaction power.

[0037] A third aspect of this application provides a battery energy storage coordination control device, comprising: a memory and a processor;

[0038] The memory is used to store programs;

[0039] The processor is used to execute the program to implement the various steps of the battery energy storage coordinated control method described above.

[0040] A fourth aspect of this application provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the various steps of the battery energy storage coordinated control method described above.

[0041] As can be seen from the above technical solution, this application first obtains the compensation power of the power system. The compensation power represents the power difference between the power generation unit and the power consumption unit in the power system. It can be understood that when the compensation power is positive, it means that the energy storage unit needs to be charged; when the compensation power is negative, it means that the energy storage unit needs to discharge. Then, based on the rated interactive power of each battery energy storage unit in the power system and the compensation power, the operating mode of the energy storage unit is determined. The operating mode is used to constrain the charging and discharging methods of the battery energy storage under different compensation powers. Finally, based on the operating mode, combined with the state of charge and rated interactive power of each battery energy storage unit, the interactive power of each battery energy storage unit is determined. Because the state of charge (SOC) and rated SOC of each battery are considered when determining the interaction power of each battery energy storage unit, the SOC of each battery energy storage unit connected in parallel gradually becomes the same. This avoids the situation where the SOC of one battery energy storage unit reaches 100%, while the SOC of other battery energy storage units is far less than 100%. This helps to ensure the safe operation of battery energy storage and extends the service life of battery energy storage. Attached Figure Description

[0042] 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0043] Figure 1 This is a schematic diagram of the battery energy storage coordinated control method disclosed in the embodiments of this application;

[0044] Figure 2 This is a schematic diagram of the battery energy storage coordination control device disclosed in the embodiments of this application;

[0045] Figure 3 This is a schematic diagram of the battery energy storage coordination control device disclosed in the embodiments of this application. Detailed Implementation

[0046] 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.

[0047] The battery energy storage coordinated control method provided in the embodiments of this application is described below. Please refer to... Figure 1 The battery energy storage coordinated control method provided in this application embodiment may include the following steps:

[0048] Step S101: Obtain the compensation power of the power system.

[0049] This compensation power is used to characterize the power difference between power generation units and power consumption units in a power system. Specifically, assume that the power generation capacity of each power generation unit in the power system is P. G The power consumption of each electrical unit is P. C The compensation power ΔP can then be calculated using the following equation:

[0050] ΔP=P G -P C

[0051] It is understandable that when the compensation power ΔP is positive, it means that the power generation unit is outputting too much power and needs to charge the energy storage unit to consume the excess power; when the compensation power ΔP is negative, it means that the power generation unit is outputting too little power and the energy storage unit needs to discharge to meet the power demand of the power consumption unit.

[0052] Step S102: Determine the operating mode of the energy storage unit based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power.

[0053] For example, the operating mode of an energy storage unit can be determined by comparing the compensation power with the rated interaction power of each battery energy storage unit. This operating mode may include operating constraints on the battery energy storage.

[0054] Step S103: Based on this operating mode, and combining the state of charge and rated interactive power of each battery energy storage, determine the interactive power of each battery energy storage.

[0055] The State of Charge (SOC) reflects the remaining capacity of a battery's energy storage system, and is numerically defined as the ratio of remaining capacity to the total battery energy storage capacity. Considering the SOC while charging and discharging the battery helps ensure its safe operation.

[0056] This application first obtains the compensation power of the power system. The compensation power represents the power difference between the power generation unit and the power consumption unit in the power system. It is understood that when the compensation power is positive, it means that the energy storage unit needs to be charged; when the compensation power is negative, it means that the energy storage unit needs to discharge. Then, based on the rated interactive power of each battery energy storage unit in the power system and the compensation power, the operating mode of the energy storage unit is determined. The operating mode is used to constrain the charging and discharging methods of the battery energy storage under different compensation powers. Finally, based on the operating mode, combined with the state of charge (SOC) and rated interactive power of each battery energy storage unit, the interactive power of each battery energy storage unit is determined. Because the SOC and rated interactive power of each battery energy storage unit are considered when determining the interactive power, the SOC of the parallel-connected battery energy storage units gradually tends to be the same, avoiding a situation where one battery energy storage unit reaches 100% SOC while the SOC of other battery energy storage units is far less than 100%. This helps ensure the safe operation of the battery energy storage and extends its service life.

[0057] In some embodiments of this application, the process of determining the operating mode of the energy storage unit based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power in step S102 may include:

[0058] The operating mode S of the energy storage unit is determined using the following equation:

[0059]

[0060] Where ΔP is the absolute value of the compensation power; in indicates that the compensation power is positive, and the battery energy storage is in a charging state; out indicates that the compensation power is negative, and the battery energy storage is in a discharging state. Let n be the rated interactive power of the i-th battery energy storage; n is the total number of battery energy storage units connected in parallel in the energy storage unit; model1 is the first mode, used to constrain the charging mode when the compensation power is less than the rated interactive power; model2 is the second mode, used to constrain the discharging mode when the compensation power is less than the rated interactive power; model3 is the third mode, used to constrain the charging mode when the compensation power is between the rated interactive power and the total rated interactive power; model4 is the fourth mode, used to constrain the discharging mode when the compensation power is less than the rated interactive power; model5 is the fifth mode, used to constrain the charging and discharging modes when the compensation power is greater than the total rated interactive power.

[0061] In some embodiments of this application, when the operating mode is the first mode, the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, may include:

[0062] The charging power P of the i-th battery is determined using the following equation. i :

[0063]

[0064] Among them, SOC i Let ΔP be the state of charge of the i-th battery energy storage unit, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit.

[0065] In some embodiments of this application, when the operating mode is the second mode, the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, may include:

[0066] The discharge power P of the i-th battery is determined using the following equation. i :

[0067]

[0068] Among them, SOC i Let ΔP be the state of charge of the i-th battery energy storage unit, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit.

[0069] In some embodiments of this application, when the operating mode is the third mode, the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, may include:

[0070] The charging power P of the i-th battery is determined using the following equation. i :

[0071]

[0072] Among them, SOC i Let be the state of charge of the i-th battery energy storage, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit. Let i be the rated interactive power of the i-th battery energy storage.

[0073] In some embodiments of this application, when the operating mode is the fourth mode, the process of determining the interaction power of each battery energy storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage unit, may include:

[0074] The discharge power P of the i-th battery is determined using the following equation. i :

[0075]

[0076] Among them, SOC i Let be the state of charge of the i-th battery energy storage, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit. Let i be the rated interactive power of the i-th battery energy storage.

[0077] In some embodiments of this application, when the operating mode is the fifth mode, the process of determining the interaction power of each battery energy storage based on the operating mode, combined with the state of charge and rated interaction power of each battery energy storage may include:

[0078] The interaction power P of the i-th battery energy storage is determined using the following equation. i :

[0079]

[0080] in, Let i be the rated interactive power of the i-th battery energy storage.

[0081] The battery energy storage coordination control device provided in the embodiments of this application is described below. The battery energy storage coordination control device described below can be referred to in correspondence with the battery energy storage coordination control method described above.

[0082] Please see Figure 2 The battery energy storage coordination control device provided in this application embodiment may include:

[0083] The compensation power acquisition unit 21 is used to acquire the compensation power of the power system, wherein the compensation power is used to characterize the power difference between the power generation unit and the power consumption unit in the power system;

[0084] The operation mode determination unit 22 is used to determine the operation mode of the energy storage unit based on the rated interactive power of each battery energy storage in the energy storage unit of the power system and the compensation power.

[0085] The interaction power determination unit 23 is used to determine the interaction power of each battery energy storage based on the operating mode, combined with the state of charge of each battery energy storage and the rated interaction power.

[0086] In some embodiments of this application, the process by which the operation mode determination unit 22 determines the operation mode of the energy storage unit based on the rated interactive power of each battery stored in the energy storage unit of the power system and the compensation power may include:

[0087] The operating mode S of the energy storage unit is determined using the following equation:

[0088]

[0089] Where ΔP is the absolute value of the compensation power; in indicates that the compensation power is positive; out indicates that the compensation power is negative; Let n be the rated interactive power of the i-th battery energy storage; n is the total number of battery energy storage units connected in parallel in the energy storage unit; model1 is the first mode, used to constrain the charging mode when the compensation power is less than the rated interactive power; model2 is the second mode, used to constrain the discharging mode when the compensation power is less than the rated interactive power; model3 is the third mode, used to constrain the charging mode when the compensation power is between the rated interactive power and the total rated interactive power; model4 is the fourth mode, used to constrain the discharging mode when the compensation power is less than the rated interactive power; model5 is the fifth mode, used to constrain the charging and discharging modes when the compensation power is greater than the total rated interactive power.

[0090] In some embodiments of this application, the operating mode is a first mode; the process by which the interaction power determination unit 23 determines the interaction power of each battery storage based on the operating mode, combined with the state of charge of each battery storage and the rated interaction power, may include:

[0091] The charging power P of the i-th battery is determined using the following equation. i :

[0092]

[0093] Among them, SOC i Let ΔP be the state of charge of the i-th battery energy storage unit, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit.

[0094] In some embodiments of this application, the operating mode is a second mode; the process by which the interaction power determination unit 23 determines the interaction power of each battery storage based on the operating mode, combined with the state of charge of each battery storage and the rated interaction power, may include:

[0095] The discharge power P of the i-th battery is determined using the following equation. i :

[0096]

[0097] Among them, SOC i Let ΔP be the state of charge of the i-th battery energy storage unit, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit.

[0098] In some embodiments of this application, the operating mode is a third mode; the process by which the interaction power determination unit 23 determines the interaction power of each battery storage based on the operating mode, combined with the state of charge of each battery storage and the rated interaction power, may include:

[0099] The charging power P of the i-th battery is determined using the following equation. i :

[0100]

[0101] Among them, SOC i Let be the state of charge of the i-th battery energy storage, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit. Let i be the rated interactive power of the i-th battery energy storage.

[0102] In some embodiments of this application, the operating mode is a fourth mode; the process by which the interaction power determination unit 23 determines the interaction power of each battery storage based on the operating mode, combined with the state of charge of each battery storage and the rated interaction power, may include:

[0103] The discharge power P of the i-th battery is determined using the following equation. i :

[0104]

[0105] Among them, SOC i Let be the state of charge of the i-th battery energy storage, ΔP be the absolute value of the compensation power, and n be the total number of battery energy storage units connected in parallel in the energy storage unit. Let i be the rated interactive power of the i-th battery energy storage.

[0106] In some embodiments of this application, the operating mode is the fifth mode; the process by which the interaction power determination unit 23 determines the interaction power of each battery storage based on the operating mode, combined with the state of charge and rated interaction power of each battery storage, may include:

[0107] The interaction power P of the i-th battery energy storage is determined using the following equation. i :

[0108]

[0109] in, Let i be the rated interactive power of the i-th battery energy storage.

[0110] The battery energy storage coordination control device provided in this application embodiment can be applied to battery energy storage coordination control equipment, such as computers. Optionally, Figure 3 The hardware structure block diagram of the battery energy storage coordination control device is shown, with reference to Figure 3 The hardware structure of the battery energy storage coordination control device may include: at least one processor 31, at least one communication interface 32, at least one memory 33 and at least one communication bus 34.

[0111] In this embodiment, the number of processor 31, communication interface 32, memory 33 and communication bus 34 is at least one, and processor 31, communication interface 32 and memory 33 communicate with each other through communication bus 34;

[0112] The processor 31 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0113] The memory 32 may include high-speed RAM, and may also include non-volatile memory, such as at least one disk storage device;

[0114] The memory 33 stores a program, and the processor 31 can call the program stored in the memory 33. The program is used for:

[0115] Obtain the compensation power of the power system, which is used to characterize the power difference between the power generation unit and the power consumption unit in the power system;

[0116] The operating mode of the energy storage unit is determined based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power.

[0117] Based on the aforementioned operating mode, and considering the state of charge and rated interactive power of each battery energy storage unit, the interactive power of each battery energy storage unit is determined.

[0118] Optionally, the refined and extended functions of the program can be found in the description above.

[0119] This application embodiment also provides a storage medium that can store a program suitable for execution by a processor, the program being used for:

[0120] Obtain the compensation power of the power system, which is used to characterize the power difference between the power generation unit and the power consumption unit in the power system;

[0121] The operating mode of the energy storage unit is determined based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power.

[0122] Based on the aforementioned operating mode, and considering the state of charge and rated interactive power of each battery energy storage unit, the interactive power of each battery energy storage unit is determined.

[0123] Optionally, the refined and extended functions of the program can be found in the description above.

[0124] In summary:

[0125] This application first obtains the compensation power of the power system. The compensation power represents the power difference between the power generation unit and the power consumption unit in the power system. It is understood that when the compensation power is positive, it means that the energy storage unit needs to be charged; when the compensation power is negative, it means that the energy storage unit needs to discharge. Then, based on the rated interactive power of each battery energy storage unit in the power system and the compensation power, the operating mode of the energy storage unit is determined. The operating mode is used to constrain the charging and discharging methods of the battery energy storage under different compensation powers. Finally, based on the operating mode, combined with the state of charge (SOC) and rated interactive power of each battery energy storage unit, the interactive power of each battery energy storage unit is determined. Because the SOC and rated interactive power of each battery energy storage unit are considered when determining the interactive power, the SOC of the parallel-connected battery energy storage units gradually tends to be the same, avoiding a situation where one battery energy storage unit reaches 100% SOC while the SOC of other battery energy storage units is far less than 100%. This helps ensure the safe operation of the battery energy storage and extends its service life.

[0126] 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. Without further limitations, 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.

[0127] 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.

[0128] 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 battery energy storage coordinated control method, characterized in that, include: Obtain the compensation power of the power system, which is used to characterize the power difference between the power generation unit and the power consumption unit in the power system; The operating mode of the energy storage unit is determined based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power. Based on the aforementioned operating mode, and considering the state of charge and rated interactive power of each battery energy storage, the interactive power of each battery energy storage is determined. The process of determining the operating mode of the energy storage unit based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power includes: The operating mode of the energy storage unit is determined using the following equations. : in, The absolute value of the compensation power; This indicates that the compensation power is positive; This indicates that the compensation power is negative; For the first The rated interactive power of each battery energy storage unit; The total number of batteries connected in parallel in the energy storage unit; This is the first mode, used to constrain the charging method when the compensation power is less than the rated interactive power; This is the second mode, used to constrain the discharge mode when the compensation power is less than the rated interaction power; This is the third mode, used to constrain the charging method when the compensation power is between the rated interactive power and the total rated interactive power; This is the fourth mode, used to constrain the discharge mode when the compensation power is less than the rated interaction power; This is the fifth mode, used to constrain the charging and discharging methods when the compensation power exceeds the total rated interactive power; The operating mode is the first mode; based on the operating mode, and in conjunction with the state of charge and rated interactive power of each battery storage, the process of determining the interactive power of each battery storage includes: The following equation is used to determine the first Charging power of individual battery storage : in, For the first The state of charge of a battery's energy storage. To compensate for the absolute value of the power, The total number of batteries connected in parallel in the energy storage unit; The operating mode is the second mode; based on the operating mode, and in conjunction with the state of charge and rated interactive power of each battery storage, the process of determining the interactive power of each battery storage includes: The following equation is used to determine the first Discharge power of individual battery energy storage : in, For the first The state of charge of a battery's energy storage. To compensate for the absolute value of the power, This represents the total number of batteries connected in parallel within the energy storage unit.

2. The method according to claim 1, characterized in that, The operating mode is the third mode; based on the operating mode, and in conjunction with the state of charge and rated interactive power of each battery storage, the process of determining the interactive power of each battery storage includes: The following equation is used to determine the first Charging power of individual battery storage : in, For the first The state of charge of a battery's energy storage. To compensate for the absolute value of the power, The total number of batteries connected in parallel in the energy storage unit. For the first The rated interactive power of each battery energy storage unit.

3. The method according to claim 1, characterized in that, The operating mode is the fourth mode; based on the operating mode, and in conjunction with the state of charge and rated interactive power of each battery storage, the process of determining the interactive power of each battery storage includes: The following equation is used to determine the first Discharge power of individual battery storage : in, For the first The state of charge of a battery's energy storage. To compensate for the absolute value of the power, The total number of batteries connected in parallel in the energy storage unit. For the first The rated interactive power of each battery energy storage unit.

4. The method according to claim 1, characterized in that, The operating mode is the fifth mode; Based on the aforementioned operating mode, and considering the state of charge and rated interactive power of each battery storage unit, the process of determining the interactive power of each battery storage unit includes: The following equation is used to determine the first Interactive power of individual battery energy storage : in, For the first The rated interactive power of each battery energy storage unit.

5. A battery energy storage coordination control device, characterized in that, include: The compensation power acquisition unit is used to acquire the compensation power of the power system, wherein the compensation power is used to characterize the power difference between the power generation unit and the power consumption unit in the power system; An operation mode determination unit is used to determine the operation mode of the energy storage unit based on the rated interactive power of each battery energy storage in the energy storage unit of the power system and the compensation power. An interactive power determination unit is used to determine the interactive power of each battery energy storage unit based on the operating mode, combined with the state of charge of each battery energy storage unit and the rated interactive power. The process by which the operation mode determination unit determines the operation mode of the energy storage unit based on the rated interactive power of each battery in the energy storage unit of the power system and the compensation power includes: The operating mode of the energy storage unit is determined using the following equations. : in, The absolute value of the compensation power; This indicates that the compensation power is positive; This indicates that the compensation power is negative; For the first The rated interactive power of each battery energy storage unit; The total number of batteries connected in parallel in the energy storage unit; This is the first mode, used to constrain the charging method when the compensation power is less than the rated interactive power; This is the second mode, used to constrain the discharge mode when the compensation power is less than the rated interaction power; This is the third mode, used to constrain the charging method when the compensation power is between the rated interactive power and the total rated interactive power; This is the fourth mode, used to constrain the discharge mode when the compensation power is less than the rated interaction power; This is the fifth mode, used to constrain the charging and discharging methods when the compensation power exceeds the total rated interactive power; The operating mode is the first mode; the process by which the interaction power determination unit determines the interaction power of each battery storage based on the operating mode, combined with the state of charge and rated interaction power of each battery storage, includes: The following equation is used to determine the first Charging power of individual battery storage : in, For the first The state of charge of a battery's energy storage. To compensate for the absolute value of the power, The total number of batteries connected in parallel in the energy storage unit; The operating mode is the second mode; the process by which the interaction power determination unit determines the interaction power of each battery storage unit based on the operating mode, combined with the state of charge and rated interaction power of each battery storage unit, includes: The following equation is used to determine the first Discharge power of individual battery storage : in, For the first The state of charge of a battery's energy storage. To compensate for the absolute value of the power, This represents the total number of batteries connected in parallel within the energy storage unit.

6. A battery energy storage coordination control device, characterized in that, include: Memory and processor; The memory is used to store programs; The processor is used to execute the program to implement each step of the battery energy storage coordinated control method as described in any one of claims 1 to 4.

7. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements each step of the battery energy storage coordinated control method as described in any one of claims 1 to 4.

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