Coordination control method and device of energy storage power station, electronic equipment and storage medium

Abstract

The invention provides a coordination control method and device for an energy storage power station, electronic equipment and a storage medium, and belongs to the field of energy storage. Under the condition that the difference between the current frequency of the grid-connected point and the system frequency dead zone of the energy storage power station is greater than or equal to a preset frequency deviation threshold value, superimposing a primary frequency modulation instruction and a virtual inertia support instruction so as to doubly suppress the frequency change amplitude and the frequency change rate; the primary frequency modulation power is determined according to the SOC of the energy storage power station; when the system frequency fluctuates and deviates from the rated frequency, and the difference value between the current frequency of the grid connection point and the system frequency dead zone is smaller than a preset frequency deviation threshold value, or when the system frequency gradually approaches the rated frequency, a primary frequency modulation instruction is executed. The method can solve the problems that the energy storage power station is poor in frequency quick response performance and large in frequency steady-state deviation, and the service life of a battery is prolonged.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and specifically to a coordinated control method, device, electronic equipment, and storage medium for an energy storage power station. Background Technology

[0002] The primary frequency regulation function of energy storage power stations is mainly to cope with short-term, rapid load fluctuations, and to autonomously provide active power support or absorption to the grid when the grid frequency exceeds limits. Utilizing its rapid and accurate grid frequency detection and power control capabilities, energy storage power station systems can respond to grid frequency changes more quickly than thermal power or new energy units, and independently undertake primary frequency regulation capabilities.

[0003] Traditional control strategies have obvious problems: on the one hand, they do not provide sufficient support for the entire frequency response process; on the other hand, they fail to achieve coordinated operation of primary frequency regulation and virtual inertia functions, operating in only independent modes, which can also lead to problems such as accelerated wear and tear on energy storage devices.

[0004] The above problems will lead to poor frequency response performance of energy storage power stations, large frequency steady-state deviation, and increased battery life loss. Summary of the Invention

[0005] In view of this, it is necessary to provide a coordinated control method, device, electronic equipment and storage medium for energy storage power stations to solve the technical problems of poor frequency fast response performance, large frequency steady-state deviation and increased battery life loss in energy storage power stations.

[0006] To address the aforementioned problems, in a first aspect, the present invention provides a coordinated control method for an energy storage power station, comprising: When the system frequency of the energy storage power station fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency of the energy storage power station is greater than or equal to the preset frequency deviation threshold, a primary frequency regulation command and a virtual inertia support command are superimposed to suppress the frequency change amplitude and frequency change rate in a dual manner; the primary frequency regulation power is determined according to the SOC of the energy storage power station. When the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency is less than a preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency, a frequency adjustment command is executed.

[0007] In one possible implementation, the preset frequency deviation threshold ranges from 0.1Hz to 0.3Hz.

[0008] In one possible implementation, the primary frequency regulation power is determined based on the frequency regulation deviation coefficient, the SOC correction coefficient, and the total capacity of the energy storage power station.

[0009] In a possible implementation, the calculation formula for the primary frequency regulation power is as follows:

[0010] Where, is the primary frequency regulation power, is the frequency regulation deviation coefficient, is the SOC correction coefficient, and the SOC correction coefficient is determined according to the SOC of the energy storage power station, is the total capacity of the energy storage power station.

[0011] In a possible implementation, the frequency regulation deviation coefficient is obtained by dividing the difference between the current frequency at the grid connection point and the system frequency dead zone by the product of the new energy fast frequency response droop rate and the rated frequency.

[0012] In a possible implementation, the value range of the frequency regulation deviation coefficient is 0 - 1.

[0013] In a possible implementation, when SOC > 0.8, the value range of the SOC correction coefficient is 0.2 - 0.5; When 0.2 < SOC < 0.8, the SOC correction coefficient is equal to 1; When SOC < 0.2, the value range of the SOC correction coefficient is 0.2 - 0.5.

[0014] In a second aspect, the present invention further provides a coordinated control device for an energy storage power station, including: A first control module, configured to superimpose a primary frequency regulation instruction and a virtual inertia support instruction to double suppress the frequency change amplitude and the frequency change rate when the system frequency of the energy storage power station fluctuates and the system frequency deviates from the rated frequency, and the difference between the current frequency at the grid connection point and the system frequency dead zone of the energy storage power station is greater than or equal to a preset frequency deviation threshold; the primary frequency regulation power is determined according to the SOC of the energy storage power station; A second control module, configured to execute the primary frequency regulation instruction when the system frequency fluctuates and the system frequency deviates from the rated frequency, and the difference between the current frequency at the grid connection point and the system frequency dead zone is less than the preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency.

[0015] In a third aspect, the present invention further provides an electronic device, including a memory and a processor, where, The memory is used to store a program; The processor is coupled to the memory and is configured to execute the program stored in the memory to implement the steps of the coordinated control method for an energy storage power station as described in any one of the above.

[0016] Fourthly, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the coordinated control method for an energy storage power station as described in any of the preceding claims.

[0017] The beneficial effects of adopting the above implementation method are as follows: The coordinated control method, device, electronic equipment, and storage medium of the energy storage power station provided by this invention, when the system frequency of the energy storage power station fluctuates and deviates from the rated frequency, and when the difference between the current frequency of the grid connection point and the dead zone of the system frequency of the energy storage power station is greater than or equal to a preset frequency deviation threshold, superimposes a primary frequency regulation command and a virtual inertia support command to doubly suppress the frequency change amplitude and frequency change rate, thereby quickly curbing the frequency instability trend and improving the frequency fast response performance. The primary frequency regulation frequency is adjusted according to the battery state of charge, reducing battery life loss.

[0018] When the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency at the grid connection point and the system frequency dead zone is less than a preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency, a frequency adjustment command is executed once. That is, when the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency at the grid connection point and the system frequency dead zone is less than the preset frequency deviation threshold, in order to prevent overshoot, the inertia support function is locked, and only one frequency adjustment command is executed. During the frequency pullback phase, that is, when the frequency gradually approaches the rated frequency, the inertia support command is opposite to the frequency adjustment command, which leads to a decrease in pullback capability. The inertia support function is also locked, and only one frequency adjustment command is executed to accurately calibrate the frequency deviation and ensure steady-state operation accuracy.

[0019] This invention integrates key information such as frequency deviation, frequency change rate, and battery state of charge to perform dynamic optimization and control, ultimately achieving deep synergy between inertia support and frequency regulation. This improves the frequency fast response performance of energy storage power stations, accurately compensates for system power deficits, effectively reduces frequency steady-state deviation, and reduces battery life loss. Thus, it solves the technical problems of poor frequency fast response performance, large frequency steady-state deviation, and increased battery life loss in energy storage power stations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0021] Figure 1A flowchart of one embodiment of the coordinated control method for an energy storage power station provided by the present invention; Figure 2 A schematic block diagram of one embodiment of the coordinated control device for an energy storage power station provided by the present invention; Figure 3 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0022] 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 a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0025] The naming or numbering of steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] This invention provides a coordinated control method, device, electronic equipment, and storage medium for an energy storage power station, which will be described below.

[0028] This invention provides a coordinated control method for an energy storage power station, which can be implemented by executing an application program on the control terminal of the energy storage power station; such as Figure 1 As shown, the method includes: S101. When the system frequency of the energy storage power station fluctuates and the system frequency deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency of the energy storage power station is greater than or equal to the preset frequency deviation threshold, a frequency regulation command and a virtual inertia support command are superimposed to suppress the frequency change amplitude and frequency change rate in a dual manner.

[0029] It is understandable that grid-based energy storage can incorporate synergistic optimization with damping control. This embodiment adds a frequency deviation threshold. The direction of frequency change is used to determine the coordination control between primary frequency modulation and virtual inertia functions. Primary frequency modulation commands are used to perform primary frequency modulation, while virtual inertia support commands are used to adjust virtual inertia.

[0030] S102. When the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency is less than the preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency, execute a frequency adjustment command.

[0031] Understandably, the core function of primary frequency regulation is to eliminate steady-state frequency deviation, while virtual inertia aims to suppress the rate of frequency change. Virtual inertia mainly suppresses grid frequency changes rapidly through the rate of frequency change, and its core is the rapid response of "rate of frequency change → power support".

[0032] The coordinated control strategy for energy storage power stations provided by this invention integrates key information such as frequency deviation, frequency change rate, and battery state of charge (SOC) for dynamic optimization and control, ultimately achieving deep synergy between inertia support and frequency regulation function. While ensuring frequency regulation accuracy and strengthening equipment safety defenses, it further improves system operation stability and achieves multi-objective optimization balance.

[0033] To address the shortcomings of existing technologies, this invention aims to provide a novel coordinated control strategy for energy storage power stations that combines dynamic state of charge (SOC) and frequency deviation thresholds. This strategy aims to improve the frequency response performance of energy storage power stations, accurately compensate for system power deficits, effectively reduce steady-state frequency deviations, and decrease battery lifespan.

[0034] In some embodiments, the preset frequency deviation threshold ranges from 0.1Hz to 0.3Hz.

[0035] It is understandable that the preset frequency deviation threshold can be 0.1Hz, 0.3Hz, or 0.2Hz.

[0036] In some embodiments, the primary frequency regulation power is determined based on the frequency regulation deviation coefficient, the SOC correction coefficient, and the total capacity of the energy storage power station.

[0037] Among them, the calculation formula for the primary frequency regulation power is:

[0038] Among them, is the primary frequency regulation power, is the frequency modulation deviation coefficient, is the SOC correction coefficient, and the SOC correction coefficient is determined according to the SOC of the energy storage power station. is the total capacity of the energy storage power station.

[0039] It can be understood that the new SOC correction coefficient in this embodiment avoids overcharging and over-discharging during the coordinated control process and reduces the battery life.

[0040] In some embodiments, the frequency modulation deviation coefficient is obtained by dividing the difference between the current frequency at the grid connection point and the system frequency dead zone by the product of the fast frequency response droop rate of new energy and the rated frequency.

[0041] It can be understood that the frequency modulation deviation coefficient is calculated based on the following formula:

[0042] Among them, f is the current frequency at the grid connection point (unit: Hz); is the system rated frequency (unit: Hz); is the system frequency dead zone (unit: Hz); δ% is the fast frequency response droop rate of new energy.

[0043] In some embodiments, the value range of the frequency modulation deviation coefficient is 0 - 1.

[0044] It can be understood that the value of the frequency modulation deviation coefficient can be 0 or 1, or 0.5, or other parameters between 0 and 1.

[0045] In some embodiments, when SOC > 0.8, the value range of the SOC correction coefficient is 0.2 - 0.5; When 0.2 < SOC < 0.8, the SOC correction coefficient is equal to 1; When SOC < 0.2, the value range of the SOC correction coefficient is 0.2 - 0.5.

[0046] It can be understood that when SOC > 0.8, the charging power is reduced to prevent overcharging; when 0.2 < SOC < 0.8, the full sensitivity responds to the frequency mutation; when SOC < 0.2, the discharging power is reduced to prevent over-discharging.

[0047] Specifically, when the system frequency fluctuates and significantly deviates from the rated frequency greater than the frequency deviation threshold At this time, the strategy, by superimposing a frequency modulation command and a virtual inertia support command, dually suppresses the amplitude and rate of frequency change, quickly curbing the trend of frequency instability; when the system frequency fluctuates and deviates significantly from the rated frequency... Less than the frequency deviation threshold To prevent overshoot, the inertia support function is locked, and only one frequency modulation command is executed; during the frequency pull-back phase (i.e., when the frequency gradually approaches the rated frequency)... At this time, the inertia support command is opposite to the frequency modulation command, resulting in a decrease in pull-back capability and locking the inertia support function. Only one frequency modulation command is executed to accurately calibrate the frequency deviation and ensure steady-state operation accuracy. At the same time, this strategy optimizes the energy storage operation characteristics and dynamically adjusts the control parameters in conjunction with the battery state of charge (SOC) throughout the control process. This effectively avoids over-discharge when the battery voltage is too low and over-charging when the voltage is too high, ultimately achieving a dynamic balance between frequency modulation response performance and battery life loss.

[0048] Specifically as follows: The formula for virtual inertia is as follows:

[0049] This is the SOC correction factor (unitless, value from 0 to 1), which is dynamically adjusted according to the energy storage SOC to avoid over-discharging at low SOC and over-charging at high SOC. High SOC range (e.g., SOC > 0.8): = 0.2~0.5, reduce charging power to prevent overcharging; Mid-SOC range (e.g., 0.2) <SOC<0.8): = 1, full sensitivity response frequency abrupt change; Low SOC range (e.g., SOC < 0.2): = 0.2~0.5, reduce discharge power to prevent over-discharge.

[0050] To maximize the charge and discharge power of energy storage (unit: kW or MW), avoid Exceeding the equipment's rated capacity, for example, a certain energy storage facility with a rated power of 10MW. Take ±10MW.

[0051] The frequency modulation formula is as follows:

[0052] M2 is the frequency modulation deviation coefficient (typically 0~1), M1 is the frequency deviation coefficient, and both are introduced... (SOC correction factor), which means the formula can be transformed into:

[0053] This refers to the primary frequency modulation power; Preset frequency deviation threshold The value is set according to the system inertia level and frequency modulation requirements, with a range of 0.1Hz-0.3Hz. When f - ≥ If the system is determined to be in a frequency change phase, both virtual inertia and primary frequency modulation functions must be enabled simultaneously. (away from the rated frequency) stage and f - ≥ ) At this stage, the virtual inertia support power With frequency modulation power With consistent direction, it can effectively suppress both the frequency change value and the frequency change rate, that is, it can suppress the frequency from being far away from the rated frequency. .

[0054] (away from the rated frequency) stage and f - < ) At this stage, the virtual inertia support power With frequency modulation power The directions are consistent, but the frequency deviation is too small to prevent overshoot. The inertia support function is locked, and the frequency adjustment command is executed only once.

[0055] (close to the rated frequency) stage) At this stage, the virtual inertia support power With frequency modulation power The opposite direction will suppress the frequency from reaching the rated frequency. When the frequency is too close, it cannot be quickly pulled back to the normal range, so the virtual inertia function needs to be locked, and only the primary frequency modulation power needs to be considered.

[0056] like Figure 2 As shown, the present invention also provides a coordination control device 200 for an energy storage power station, comprising: The first control module 201 is used to superimpose a primary frequency regulation command and a virtual inertia support command when the system frequency of the energy storage power station fluctuates and the system frequency deviates from the rated frequency, and when the difference between the current frequency of the grid connection point and the dead zone of the system frequency of the energy storage power station is greater than or equal to a preset frequency deviation threshold, so as to suppress the frequency change amplitude and frequency change rate in a dual manner; the primary frequency regulation power is determined according to the SOC of the energy storage power station. The second control module 202 is used to execute a frequency adjustment command when the system frequency fluctuates and deviates from the rated frequency, and when the difference between the current frequency of the grid connection point and the dead zone of the system frequency is less than a preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency.

[0057] The coordinated control device for the energy storage power station provided in the above embodiments can realize the technical solutions described in the embodiments of the coordinated control method for the energy storage power station. The specific implementation principles of each module or unit can be found in the corresponding content in the embodiments of the coordinated control method for the energy storage power station, and will not be repeated here.

[0058] like Figure 3 As shown, the present invention also provides an electronic device 300. The electronic device 300 includes a processor 301, a memory 302, and a display 303. Figure 3 Only some components of the electronic device 300 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0059] In some embodiments, memory 302 may be an internal storage unit of electronic device 300, such as a hard disk or memory of electronic device 300. In other embodiments, memory 302 may also be an external storage device of electronic device 300, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 300.

[0060] Furthermore, the memory 302 may include both internal storage units of the electronic device 300 and external storage devices. The memory 302 is used to store application software and various types of data installed on the electronic device 300.

[0061] In some embodiments, processor 301 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 302 or process data, such as the coordinated control method for energy storage power stations in this invention.

[0062] In some embodiments, display 303 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 303 is used to display information from electronic device 300 and to display a visual user interface. Components 301-303 of electronic device 300 communicate with each other via a system bus.

[0063] In some embodiments of the present invention, when the processor 301 executes the coordination control program for the energy storage power station in the memory 302, the following steps can be implemented: When the system frequency of the energy storage power station fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency of the energy storage power station is greater than or equal to the preset frequency deviation threshold, a primary frequency regulation command and a virtual inertia support command are superimposed to suppress the frequency change amplitude and frequency change rate in a dual manner; the primary frequency regulation power is determined according to the SOC of the energy storage power station. When the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency is less than a preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency, a frequency adjustment command is executed.

[0064] It should be understood that when the processor 301 executes the coordination control program for the energy storage power station in the memory 302, in addition to the functions mentioned above, it can also perform other functions, as detailed in the description of the corresponding method embodiments above.

[0065] Furthermore, the embodiments of the present invention do not specifically limit the type of electronic device 300 mentioned. Electronic device 300 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, electronic device 300 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0066] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the coordinated control method for an energy storage power station provided by the methods described above, the method comprising: When the system frequency of the energy storage power station fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency of the energy storage power station is greater than or equal to the preset frequency deviation threshold, a primary frequency regulation command and a virtual inertia support command are superimposed to suppress the frequency change amplitude and frequency change rate in a dual manner; the primary frequency regulation power is determined according to the SOC of the energy storage power station. When the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid connection point and the dead zone of the system frequency is less than a preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency, a frequency adjustment command is executed.

[0067] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0068] The coordinated control method, device, electronic equipment, and storage medium of the energy storage power station provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for coordinated control of energy storage plants, characterized in that, The method comprises the following steps: When the system frequency of the energy storage power station fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid-connected point and the dead zone of the system frequency of the energy storage power station is greater than or equal to a preset frequency deviation threshold, a primary frequency modulation instruction and a virtual inertia support instruction are superimposed to doublely suppress the frequency variation amplitude and the frequency variation rate; the primary frequency modulation power is determined according to the SOC of the energy storage power station; When the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid-connected point and the dead zone of the system frequency is less than the preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency, the primary frequency modulation instruction is executed.

2. The method of coordinated control of energy storage plants according to claim 1, characterized in that, The preset frequency deviation threshold is in the range of 0.1 Hz to 0.3 Hz.

3. The method of coordinated control of energy storage plants according to claim 1, characterized in that, The primary frequency modulation power is determined based on a frequency modulation deviation coefficient, an SOC correction coefficient and the total capacity of the energy storage power station.

4. The method of coordinated control of energy storage plants according to claim 3, characterized in that, The calculation formula of the primary frequency modulation power is: wherein, is a primary frequency modulation power, is a frequency modulation deviation coefficient, is an SOC correction coefficient, the SOC correction coefficient being determined depending on the SOC of the energy storage plant, is the full plant capacity of the energy storage plant.

5. The method of coordinated control of energy storage plants according to claim 4, characterized in that, The frequency modulation deviation coefficient is obtained by dividing the difference between the current frequency of the grid-connected point and the dead zone of the system frequency by the product of the new energy fast frequency response regulation rate and the rated frequency.

6. The method of coordinated control of energy storage plants according to claim 3, characterized in that, The frequency modulation deviation coefficient is in the range of 0 to 1.

7. The method of coordinated control of energy storage plants according to claim 3, characterized in that, When the SOC is greater than 0.8, the SOC correction coefficient is in the range of 0.2 to 0.5; When the SOC is in the range of 0.2 to 0.8, the SOC correction coefficient is equal to 1; When the SOC is less than 0.2, the SOC correction coefficient is in the range of 0.2 to 0.

5.

8. A coordinated control device of an energy storage power station, characterized in that, The method comprises the following steps: The first control module is used for superimposing a primary frequency modulation instruction and a virtual inertia support instruction to doublely suppress the frequency variation amplitude and the frequency variation rate when the system frequency of the energy storage power station fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid-connected point and the dead zone of the system frequency of the energy storage power station is greater than or equal to a preset frequency deviation threshold; the primary frequency modulation power is determined according to the SOC of the energy storage power station; The second control module is used for executing a primary frequency modulation instruction when the system frequency fluctuates and deviates from the rated frequency, and the difference between the current frequency of the grid-connected point and the dead zone of the system frequency is less than the preset frequency deviation threshold, or when the system frequency gradually approaches the rated frequency.

9. An electronic device, comprising: The computer program is executed by the processor to implement the steps of the coordinated control method of the energy storage power station according to any one of claims 1 to 7. The computer program is executed by the processor to implement the steps of the coordinated control method of the energy storage power station according to any one of claims 1 to 7. ​ 10. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, ​

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