Cooperative control method and cooperative control system of industrial and commercial energy storage system

Abstract

The invention relates to the technical field of energy storage control, and discloses a cooperative control method and a cooperative control system of an industrial and commercial energy storage system, through cooperative work of an EMS master controller and an EMS slave controller, the power output of each energy storage unit can be monitored and adjusted in real time, the load rate of a transformer is ensured to be within a safe range, and the safety of the transformer is ensured. A countercurrent phenomenon can be effectively prevented, and stable operation of a power grid is guaranteed; in addition, by accurately calculating the charging and discharging lower limit value and the active power upper limit value of each energy storage unit, the peak-valley arbitrage income can be maximized, and the demand electric charge can be minimized, so that the economic benefit is remarkably improved; meanwhile, the complexity of multi-strategy cooperative control is simplified, global optimization is achieved, and powerful support is provided for efficient, safe and economical operation of industrial and commercial energy storage systems.

Description

Technical Field

[0001] This invention relates to the field of energy storage control technology, and in particular to a collaborative control method and collaborative control system for industrial and commercial energy storage systems. Background Technology

[0002] With the ongoing energy transition and the widespread implementation of time-of-use pricing mechanisms, commercial and industrial energy storage systems are seeing large-scale applications due to their significant economic value in peak shaving and valley filling, and reducing demand-based electricity costs. Energy storage systems effectively utilize peak-valley price differences to generate revenue by charging during off-peak or normal electricity price periods and discharging during peak or peak periods. Simultaneously, they smooth users' electricity load curves, reducing the maximum demand value within the billing cycle (typically 15 minutes), thereby reducing the basic electricity cost based on maximum demand. Furthermore, they enable dynamic capacity expansion of transformers and optimization of transformer load rates by reducing short-term peak loads.

[0003] However, in actual deployment and operation, especially in complex industrial and commercial park scenarios that include distributed energy sources such as photovoltaics, existing energy storage control strategies have revealed many technical bottlenecks and limitations in achieving multi-objective coordination such as demand management, reverse current protection, and transformer capacity optimization. These limitations are mainly reflected in the following two aspects:

[0004] (1) The control objective is singular and lacks systematic coordination.

[0005] Existing energy storage control strategies typically focus on a single economic objective, such as peak-valley arbitrage or simple demand control. However, integrated energy management for industrial and commercial users is actually a multi-objective optimization problem that needs to consider the following three aspects simultaneously:

[0006] Economic efficiency: Maximize peak-valley arbitrage profits and minimize demand-based electricity costs.

[0007] Safety: Ensure that the transformer load rate does not exceed its long-term rated capacity and make full use of its short-term overload capacity to avoid equipment damage and safety accidents.

[0008] Compliance: Strictly prevent photovoltaic or energy storage systems from backflowing into the public power grid to avoid grid penalties and equipment risks.

[0009] Existing technical solutions often employ independent control loops to handle these tasks. For example, demand control regulates charging and discharging based on set thresholds, while reverse current prevention monitors power direction and takes limiting measures independently. This "separate-track" control mode lacks top-level coordination and is prone to strategy conflicts. For instance, when fully discharging under demand control, sudden load changes may trigger reverse current risks; or when preventing reverse current, energy storage output may be prematurely limited, preventing the demand control target from being achieved and reducing charging and discharging output, thus lowering peak-valley arbitrage profits.

[0010] (2) Challenges in coordinated control under multi-transformer and complex access scenarios

[0011] In industrial parks with multiple transformers, distributed energy storage units, and photovoltaic systems, coordinated control becomes exceptionally complex. Most existing solutions employ localized, independent control, where each energy storage system makes decisions solely based on transformer-side information from its connection point. This control model suffers from a significant global optimization blind spot, with specific problems as follows:

[0012] Demand control failure: The maximum demand assessment point is usually at the main incoming line, while the energy storage systems distributed under each transformer only perform anti-reverse current and capacity management control based on their access points. After the superposition, the maximum demand at the main gate may have exceeded the limit.

[0013] Multi-strategy collaborative control is highly complex: the load rates of multiple transformers are different. When the demand management limit is exceeded, the up-adjustment and down-adjustment capabilities of each energy storage unit are different. Furthermore, it is necessary to take into account the load rate of each transformer and the prevention of reverse current in order to achieve overall collaborative control.

[0014] In conclusion, given the numerous problems existing in the practical application of current energy storage control strategies, it is imperative to comprehensively and thoroughly improve existing technologies in order to enhance the operational efficiency and economic benefits of industrial and commercial energy storage systems and ensure the safe and stable operation of the power system.

[0015] The above information is provided as background information only to aid in understanding the present invention, and does not constitute an assertion or admission that any of the above content can be used as prior art relative to the present invention. Summary of the Invention

[0016] This invention provides a collaborative control method and a collaborative control system for industrial and commercial energy storage systems to solve the problems existing in the prior art.

[0017] To achieve the above objectives, the present invention provides the following technical solution:

[0018] In a first aspect, the present invention provides a collaborative control method for an industrial and commercial energy storage system, the method comprising:

[0019] S101. Collect the total active power at the main gate through the EMS main controller, and calculate the power adjustment required for all energy storage units based on the set maximum demand limit.

[0020] S102. Collect the active power of each access point from the controller through the EMS corresponding to each energy storage unit, and calculate the lower limit of charging and discharging of each energy storage unit based on the active power of each access point and the transformer capacity management limit. And calculate the upper limit of active power for each energy storage unit based on the active power and anti-reverse current limit of each access point. ;

[0021] S103. Calculate the adjustable power of each energy storage unit. and adjustable power ;

[0022] S104, if

[0023] ;

[0024] like If so, it is determined that a power reduction is required, and the adjustment amount for each energy storage unit is as follows:

[0025] ;

[0026] like If so, then it is determined that no power adjustment is required;

[0027] S105. Sum the adjustment amount of each energy storage unit with the current power. Each is related to the corresponding lower limit of charge and discharge. Or active power upper limit Compare and determine the power that each energy storage unit needs to perform at the moment. :

[0028] like ,but ;

[0029] like ,but ;

[0030] like , .

[0031] Furthermore, in the collaborative control method for the industrial and commercial energy storage system, in step S101, the power that all energy storage units need to adjust is... The calculation formula is:

[0032] ;

[0033] in, This refers to the total active power at the main gate. The maximum demand limit is set. This is the dead zone value for demand control.

[0034] Furthermore, in the collaborative control method for the industrial and commercial energy storage system, in step S102, the lower limit values ​​for charging and discharging of each energy storage unit are... The calculation formula is:

[0035] ;

[0036] in, Let be the lower limit of charging and discharging for the i-th energy storage unit. Let be the active power of the access point corresponding to the i-th energy storage unit. This represents the capacity management limit of the distribution transformer corresponding to the i-th energy storage unit. This is the dead zone value for demand control. This refers to the active power of the energy storage system.

[0037] Furthermore, in the collaborative control method for the industrial and commercial energy storage system, in step S102, the upper limit of the active power of each energy storage unit is... The calculation formula is:

[0038] ;

[0039] in, Let be the upper limit of the active power of the i-th energy storage unit. Let be the active power of the access point corresponding to the i-th energy storage unit. To prevent backflow limits, This refers to the active power of the energy storage system.

[0040] Furthermore, in the collaborative control method for the industrial and commercial energy storage system, in step S103, the adjustable power of each energy storage unit... The calculation formula is:

[0041] ;

[0042] in, Let be the upper limit of the active power of the i-th energy storage unit. This refers to the active power of the energy storage system.

[0043] Furthermore, in the collaborative control method for the industrial and commercial energy storage system, in step S103, the adjustable power of each energy storage unit is... The calculation formula is:

[0044] ;

[0045] in, Let be the lower limit of charging and discharging for the i-th energy storage unit. This refers to the active power of the energy storage system.

[0046] Secondly, the present invention provides a collaborative control system, including an industrial and commercial energy storage system and an EMS slave controller;

[0047] The EMS is communicatively connected to the industrial and commercial energy storage system from the controller, and is used to execute the collaborative control method for the industrial and commercial energy storage system as provided in the first aspect above.

[0048] Furthermore, in the collaborative control system, the industrial and commercial energy storage system includes a main transformer, an EMS main controller, a first meter, several distribution transformers, several second meters, several energy storage units, and several EMS slave controllers.

[0049] The main transformer is connected to the public power grid;

[0050] Each of the energy storage units is connected to the main transformer via a corresponding distribution transformer;

[0051] One end of the first meter is connected to the connection point between the main transformer and several distribution transformers, and the other end is connected to one end of the EMS main controller; the other end of the EMS main controller is connected to each of the energy storage units.

[0052] One end of each of the second meters is connected to the connection point between the corresponding distribution transformer and the energy storage unit, and the other end is connected to the EMS slave controller; the other end of the EMS slave controller is connected to the EMS master controller.

[0053] Thirdly, the present invention provides a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the collaborative control method for industrial and commercial energy storage systems as provided in the first aspect above.

[0054] Fourthly, the present invention provides a computer-readable storage medium having computer-executable instructions stored thereon, the computer-executable instructions being executed by a computer processor to implement the collaborative control method for industrial and commercial energy storage systems as provided in the first aspect above.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] This invention provides a collaborative control method and system for industrial and commercial energy storage systems. Through the collaborative operation of the EMS master controller and EMS slave controller, it can not only monitor and adjust the power output of each energy storage unit in real time to ensure that the transformer load rate is within a safe range, but also effectively prevent backflow and ensure the stable operation of the power grid. In addition, by accurately calculating the lower limit of charging and discharging and the upper limit of active power of each energy storage unit, it can maximize peak-valley arbitrage benefits and minimize demand charges, thereby significantly improving economic efficiency. At the same time, it simplifies the complexity of multi-strategy collaborative control, realizes global optimization, and provides strong support for the efficient, safe and economical operation of industrial and commercial energy storage systems.

[0057] The present invention has other features and advantages, which will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of the invention. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is a flowchart illustrating a collaborative control method for an industrial and commercial energy storage system provided in Embodiment 1 of the present invention.

[0060] Figure 2 This is a schematic diagram of the structure of a collaborative control system provided in Embodiment 2 of the present invention;

[0061] Figure 3 This is a schematic diagram of the structure of a computer device provided in Embodiment 3 of the present invention. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] Example 1

[0064] Please refer to Figure 1 This is a flowchart illustrating a collaborative control method for an industrial and commercial energy storage system according to Embodiment 1 of the present invention. The method specifically includes the following steps:

[0065] S101. Collect the total active power at the main gate through the EMS main controller, and calculate the power adjustment required for all energy storage units based on the set maximum demand limit. ;

[0066] It should be noted that the "main connection point" refers to the connection point between the main transformer and several distribution transformers, specifically obtained by collecting power information at this point using electricity meters. Based on the pre-set maximum demand limit, the collected total active power data is used to calculate the overall power adjustment required for all energy storage units to meet the maximum demand requirements. This step provides an overall target basis for subsequent power adjustments to individual energy storage units.

[0067] In one embodiment of this example, the power that all energy storage units need to adjust is... The calculation formula is:

[0068] ;

[0069] in, This refers to the total active power at the main gate. The maximum demand limit is set. This is the dead zone value for demand control.

[0070] S102. Collect the active power of each access point from the controller through the EMS corresponding to each energy storage unit, and calculate the lower limit of charging and discharging of each energy storage unit based on the active power of each access point and the transformer capacity management limit. And calculate the upper limit of active power for each energy storage unit based on the active power and anti-reverse current limit of each access point. ;

[0071] It should be noted that each energy storage unit is equipped with a corresponding EMS slave controller. These slave controllers collect the active power of the connection point to which their respective energy storage unit is connected. The connection point is the connection point between the distribution transformer and the energy storage unit, and the power is also collected through a meter. On the one hand, based on the active power of the connection point and the transformer capacity management limits, the lower limit value of each energy storage unit during the charging and discharging process is calculated to ensure that the charging and discharging operation of the energy storage unit does not exceed the range allowed by the transformer capacity management, thus ensuring the safe operation of the transformer. On the other hand, based on the active power of the connection point and the anti-reverse current limit, the upper limit value of the active power of each energy storage unit is calculated to prevent the energy storage unit from transmitting power back to the grid, avoiding adverse effects on the grid caused by reverse current.

[0072] In one embodiment of this invention, the lower limit of charge and discharge for each energy storage unit is... The calculation formula is:

[0073] ;

[0074] in, Let be the lower limit of charging and discharging for the i-th energy storage unit. Let be the active power of the access point corresponding to the i-th energy storage unit. This represents the capacity management limit of the distribution transformer corresponding to the i-th energy storage unit. This is the dead zone value for demand control. This refers to the active power of the energy storage system.

[0075] Upper limit of active power of each energy storage unit The calculation formula is:

[0076] ;

[0077] in, Let be the upper limit of the active power of the i-th energy storage unit. Let be the active power of the access point corresponding to the i-th energy storage unit. To prevent backflow limits, This refers to the active power of the energy storage system.

[0078] S103. Calculate the adjustable power of each energy storage unit. and adjustable power ;

[0079] It should be noted that after obtaining the relevant power information of each energy storage unit (such as active power at the access point, lower limit of charging and discharging, upper limit of active power, etc.), specific calculation methods were used to calculate the power output that each energy storage unit can increase (adjustable power) and the power output that can decrease (adjustable power) under the current state. This data provides the basis for subsequently determining the direction and amount of power adjustment for the energy storage units.

[0080] In one embodiment of this invention, the adjustable power of each energy storage unit... The calculation formula is:

[0081] ;

[0082] in, Let be the upper limit of the active power of the i-th energy storage unit. This refers to the active power of the energy storage system.

[0083] Down-adjustable power of each energy storage unit The calculation formula is:

[0084] ;

[0085] in, Let be the lower limit of charging and discharging for the i-th energy storage unit. This refers to the active power of the energy storage system.

[0086] S104, if If so, it is determined that a power increase is required, and the adjustment amount for each energy storage unit is as follows:

[0087] ;

[0088] like If so, it is determined that a power reduction is required, and the adjustment amount for each energy storage unit is as follows:

[0089] ;

[0090] like If so, then it is determined that no power adjustment is required;

[0091] It should be noted that when the value is greater than 0, it indicates that the overall system needs to increase power output, and it is determined that the power needs to be increased, and the adjustment amount of each energy storage unit is calculated. When the value is less than 0, it means that the overall system needs to reduce power output, and it is determined that the power needs to be decreased, and the adjustment amount of each energy storage unit is calculated in the same way. When the value is equal to 0, it means that the current power state of the system meets the requirements, and no power adjustment of the energy storage unit is required.

[0092] S105. Sum the adjustment amount of each energy storage unit with the current power. Each is related to the corresponding lower limit of charge and discharge. Or active power upper limit Compare and determine the power that each energy storage unit needs to perform at the moment. :

[0093] like ,but ;

[0094] like ,but ;

[0095] like , .

[0096] It should be noted that for each energy storage unit, the calculated power adjustment is compared with the previously calculated lower limit for charging and discharging or upper limit for active power. This comparison further determines the actual power required by each energy storage unit under the current conditions, thereby ensuring that the power output of the energy storage unit remains within a safe and reasonable range.

[0097] This invention, through the collaborative operation of the EMS master controller and EMS slave controller, not only enables real-time monitoring and adjustment of the power output of each energy storage unit, ensuring that the transformer load rate remains within a safe range, but also effectively prevents backflow and guarantees the stable operation of the power grid. Furthermore, by accurately calculating the lower limit of charging and discharging and the upper limit of active power for each energy storage unit, it can maximize peak-valley arbitrage profits and minimize demand charges, thereby significantly improving economic efficiency. At the same time, it simplifies the complexity of multi-strategy collaborative control, achieves global optimization, and provides strong support for the efficient, safe, and economical operation of industrial and commercial energy storage systems.

[0098] Although this invention frequently uses terms such as EMS master controller and EMS slave controller, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

[0099] Example 2

[0100] Please refer to Figure 2 Embodiment 2 of the present invention provides a collaborative control system, including an industrial and commercial energy storage system and an EMS slave controller;

[0101] The EMS is communicatively connected to the industrial and commercial energy storage system from the controller, and is used to execute the collaborative control method for the industrial and commercial energy storage system as provided in Embodiment 1 above.

[0102] It should be noted that by specifically applying the collaborative control method in Embodiment 1 to industrial and commercial energy storage systems, these systems can operate more intelligently and efficiently. The system can respond in real time to changes in the demands of the power grid and users, optimize the charging and discharging strategies of the energy storage system, and improve the economic efficiency of electricity use for industrial and commercial users while ensuring the stable operation of the power grid, reducing electricity costs, and achieving rational utilization and optimized allocation of energy.

[0103] Please refer to this again. Figure 2 In one embodiment of this example, the industrial and commercial energy storage system includes a main transformer, an EMS main controller, a first meter, several distribution transformers, several second meters, several energy storage units, and several EMS slave controllers.

[0104] The main transformer is connected to the public power grid;

[0105] Each of the energy storage units is connected to the main transformer via a corresponding distribution transformer;

[0106] One end of the first meter is connected to the connection point between the main transformer and several distribution transformers, and the other end is connected to one end of the EMS main controller; the other end of the EMS main controller is connected to each of the energy storage units.

[0107] One end of each of the second meters is connected to the connection point between the corresponding distribution transformer and the energy storage unit, and the other end is connected to the EMS slave controller; the other end of the EMS slave controller is connected to the EMS master controller.

[0108] Each of the energy storage units includes a load and several energy storage cabinets.

[0109] The above system can execute the methods provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the methods.

[0110] Example 3

[0111] Figure 3 This is a schematic diagram of the structure of a computer device provided in Embodiment 3 of the present invention. Figure 3 A block diagram of an exemplary computer device 12 suitable for implementing embodiments of the present invention is shown. Figure 3 The computer device 12 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of the present invention.

[0112] like Figure 3 As shown, the computer device 12 is represented in the form of a general-purpose computing device. The components of the computer device 12 may include, but are not limited to: one or more processors or processing units 16, system memory 28, and bus 18 connecting different system components (including system memory 28 and processing unit 16).

[0113] Bus 18 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. For example, these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0114] Computer device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer device 12, including volatile and non-volatile media, removable and non-removable media.

[0115] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Computer device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (…). Figure 3 Not shown; usually referred to as a "hard drive"). Although Figure 3 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0116] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 42 typically perform the functions and / or methods described in the embodiments of the present invention.

[0117] Computer device 12 can also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with the computer device 12, and / or with any device that enables the computer device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 22. Furthermore, computer device 12 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with other modules of computer device 12 via bus 18. It should be understood that, although... Figure 3 As not shown, it can be used in conjunction with computer device 12 with other hardware and / or software modules, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0118] The processing unit 16 executes various functional applications and data processing by running programs stored in the system memory 28, such as implementing the collaborative control method for industrial and commercial energy storage systems provided in the embodiments of the present invention.

[0119] Example 4

[0120] Embodiment 4 of the present invention provides a computer-readable storage medium storing computer-executable instructions thereon, which, when executed by a processor, implement the collaborative control method for industrial and commercial energy storage systems as provided in all embodiments of the present invention.

[0121] Any combination of one or more computer-readable media may be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device.

[0122] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0123] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0124] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0125] Finally, it should be noted that although the above embodiments have been described in the description and drawings of this invention, this should not limit the scope of patent protection of this invention. Any technical solutions that are based on the essential concept of this invention, utilize the content described in the description and drawings of this invention to make equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this invention.

Claims

1. A method of coordinated control of industrial and commercial energy storage systems, characterized in that, The method comprises: S101, collecting total active power at total gateway by EMS master controller, and calculating power that all energy storage units need to adjust according to limit value of set maximum demand ; S102, acquire active power of each access point from the controller through the EMS corresponding to each energy storage unit, and calculate the lower limit value of charging and discharging of each energy storage unit according to the active power of each access point and the transformer capacity management limit value , and calculate the upper limit value of active power of each energy storage unit according to the active power of each access point and the anti-flow limit value ; S103、calculating the up-regulatable power of each energy storage unit and the down-regulatable power ; S104、If , it is determined that power up-regulation is needed, and the adjustment amount of each energy storage unit is: ； If , it is determined that power down-regulation is needed, and the adjustment amount of each energy storage unit is: ； If then it is determined that power adjustment is not needed; S105, compare the adjustment amount of each energy storage unit with the sum of the current power respectively with the corresponding lower limit value of charging and discharging or the upper limit value of active power to determine the power that each energy storage unit currently needs to perform : If then ; If then ; If , .

2. The method of coordinated control of industrial and commercial energy storage systems according to claim 1, characterized in that, In the S101, all energy storage units need to adjust the power The calculation formula is: ； wherein Ptot is the total active power at the total gateway, Pmax is the set maximum demand limit, Pdead is the dead band value for demand control.

3. The method of coordinated control of industrial and commercial energy storage systems according to claim 1, characterized in that, In the S102, the lower limit value of the charge and discharge of each energy storage unit The calculation formula is: ； wherein, is a lower limit value of charge and discharge of the i-th energy storage unit, is an active power of the access point corresponding to the i-th energy storage unit, is a capacity management limit value of the distribution transformer corresponding to the i-th energy storage unit, is a dead zone value of demand control, is an active power of the energy storage system.

4. The method of coordinated control of industrial and commercial energy storage systems according to claim 1, characterized in that, In the S102, the active power upper limit value of each energy storage unit The calculation formula is: ； wherein, is an active power upper limit value for the i-th energy storage unit, is an active power of the access point corresponding to the i-th energy storage unit, is an anti-flow limit value, is an active power of the energy storage system.

5. The method of coordinated control of industrial and commercial energy storage systems according to claim 1, characterized in that, In the S103, the up-regulatable power of each energy storage unit The calculation formula is: ； wherein, Pmax,i is the active power upper limit value for the i-th energy storage unit, P is the active power of the energy storage system.

6. The method of coordinated control of industrial and commercial energy storage systems according to claim 1, characterized in that, In the S103, the down-regulatable power of each energy storage unit The calculation formula is: ； wherein, is the lower limit value of charge and discharge of the i-th energy storage unit, is the active power of the energy storage system.

7. A synergic control system, characterized by, comprising a commercial and industrial energy storage system and an EMS slave controller; The EMS slave controller is in communication connection with the commercial and industrial energy storage system, and is used for executing the collaborative control method of the commercial and industrial energy storage system as claimed in any one of claims 1-6.

8. The coordinated control system of claim 7, wherein, The commercial and industrial energy storage system comprises a main transformer, an EMS master controller, a first electric meter, a plurality of distribution transformers, a plurality of second electric meters, a plurality of energy storage units and a plurality of EMS slave controllers; The main transformer is connected to a public power grid; Each of the energy storage units is connected to the main transformer through a corresponding one of the distribution transformers; One end of the first electric meter is connected to a connection point between the main transformer and the plurality of distribution transformers, and the other end is connected to one end of the EMS master controller; the other end of the EMS master controller is connected to each of the energy storage units; One end of each of the second electric meters is connected to a connection point between a corresponding one of the distribution transformers and the energy storage unit, and the other end is connected to the EMS slave controller; the other end of the EMS slave controller is connected to the EMS master controller. 9.A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer device is configured to perform the method according to any one of claims 1-8 when the computer program is executed by the processor. The processor executes the computer program to implement the collaborative control method of the commercial and industrial energy storage system as claimed in any one of claims 1-6.

10. A computer-readable storage medium having stored thereon computer- executable instructions, wherein, The computer executable instructions are executed by a computer processor to implement the collaborative control method of the commercial and industrial energy storage system as claimed in any one of claims 1-6.

Images