A network-constructed energy storage system power control method and device, equipment and medium

Abstract

This application discloses a power control method, device, equipment, and medium for a grid-type energy storage system, relating to the field of energy storage technology. The method includes: acquiring the composition type, operating status, and scenario parameter data of a hybrid energy storage station; determining the power change and active power adjustment type; and selecting priority and auxiliary response subjects based on the energy storage type. Power allocation is completed based on power limits and state of charge constraints to obtain intermediate allocation data for the next time step. The desired time constant is then determined according to the adjustment type, and the current loop and voltage loop controller parameters are adaptively tuned. Finally, an active power command is generated based on the allocation data, and the command and controller parameters are sent to the corresponding current transformer to achieve accurate power output and stable control. This method enables coordinated and efficient response of power-type and energy-type energy storage.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a power control method, device, equipment and medium for a grid-type energy storage system. Background Technology

[0002] With the large-scale grid connection of new energy sources, the grid's frequency support capacity is declining and short-term power fluctuations are intensifying. Grid-based energy storage, with its independent voltage / frequency support capabilities, has become an important piece of equipment for the stable operation of new power systems. Among them, hybrid energy storage stations, composed of energy-type and power-type energy storage, can balance long-term energy support and rapid power response. They are widely used in emergency power supply and auxiliary frequency regulation scenarios. Their power allocation accuracy and dynamic control performance directly affect grid security and equipment lifespan.

[0003] Existing grid-type hybrid energy storage power control mostly adopts fixed ratio allocation or simple threshold limiting power allocation strategies. These methods all have problems such as considering only one dimension, making it difficult to coordinate and utilize the response characteristics of various energy storage devices, ultimately resulting in poor overall coordinated control performance. Summary of the Invention

[0004] This application provides a power control method, device, equipment, and medium for a grid-type energy storage system, which can achieve coordinated and efficient response of power-type energy storage and energy-type energy storage.

[0005] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, this application provides a power control method for a grid-type energy storage system, including: Acquire data on the composition type, operating status, and scenario parameters of hybrid energy storage sites; The power change is determined based on the target power and actual output value in the operating status data, and the active power adjustment type is determined based on the power change and the time information in the scenario parameter data. The priority response subject and auxiliary response subject are determined based on the active power adjustment type and composition type data; Based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, the power change at the current moment is allocated and calculated to obtain the intermediate allocation data for the next moment. The controller parameter data is determined based on the active power adjustment type; the controller parameter data includes the current loop controller parameters obtained by tuning the expected time constant corresponding to different active power adjustment types, and the voltage loop controller parameters obtained by tuning the current loop bandwidth. The active power command for each energy storage system is determined based on the intermediate allocation data, and the active power command and controller parameter data are sent to the corresponding energy storage converter so that the energy storage converter can execute power output according to the active power command and controller parameters to complete power control.

[0006] In some possible implementations, the power change is determined based on the target power and actual output value in the operating status data, and the active power adjustment type is determined based on the power change and time information in the scenario parameter data, including: The difference between the target power and the actual output power is defined as the power change. If the power change is non-zero, then determine whether the current moment is within the emergency call period based on the time information; If the current time is within the emergency call period, the active power adjustment type is emergency call; otherwise, it is determined to be auxiliary frequency regulation.

[0007] In some possible implementations, the priority response subject and the auxiliary response subject are determined based on the active power adjustment type and composition type data, including: If the active power adjustment type is emergency dispatch, then the energy-type energy storage system will be identified as the priority response subject, and the power-type energy storage system will be identified as the auxiliary response subject; If the active power adjustment type is auxiliary frequency regulation, then the power-type energy storage system will be identified as the priority response subject, and the energy-type energy storage system will be identified as the auxiliary response subject.

[0008] In some possible implementations, based on the unit-cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit-cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, the power change at the current moment is allocated and calculated to obtain intermediate allocation data for the next moment, including: Determine whether the unit cycle power change limit of the priority response subject at the current moment meets the power change requirement, and determine whether the charge state of the priority response subject at the current moment is within the preset safe range; Based on the judgment result, the first power component of the priority response subject at the next moment is determined, and the difference between the power change and the first power component is taken as the second power component of the auxiliary response subject at the next moment, provided that the unit cycle power change limit and state of charge constraint of the auxiliary response subject are met. Intermediate allocation data is obtained based on the first power component and the second power component.

[0009] In some possible implementations, the desired time constant is determined based on the active power adjustment type, including: If the active power adjustment type is emergency dispatch, then the expected time constant is determined to be the expected time constant corresponding to the emergency dispatch; If the active power adjustment type is auxiliary frequency regulation, then the expected time constant is determined to be the expected time constant corresponding to auxiliary frequency regulation.

[0010] In some possible implementations, controller parameter data is determined based on the active power adjustment type, including: Determine the desired time constant based on the active power adjustment type; Based on the desired time constant, the filter inductance value, and the filter impedance resistance value, the current loop proportional coefficient and the current loop integral coefficient are tuned to obtain the current loop proportional coefficient and the current loop integral coefficient. The current loop bandwidth is determined based on the current loop proportional coefficient and the current loop integral coefficient. Based on the current loop bandwidth, the voltage loop proportional coefficient and voltage loop integral coefficient are obtained by tuning using the equal bandwidth method. The controller parameter data are obtained by combining the current loop proportional coefficient, current loop integral coefficient, voltage loop proportional coefficient, and voltage loop integral coefficient.

[0011] In some possible implementations, the active power command for each energy storage system is determined based on intermediate allocation data, and the active power command and controller parameter data are sent to the corresponding energy storage converter, including: The active power command for the priority response subject at the next moment is generated based on the first power component in the intermediate allocation data, and the active power command for the auxiliary response subject at the next moment is generated based on the second power component. The active power command, current loop controller parameters, and voltage loop controller parameters of the priority response subject in the next moment will be sent to the energy storage converter corresponding to the priority response subject. The active power command, current loop controller parameters, and voltage loop controller parameters of the auxiliary response subject at the next moment will be sent to the energy storage converter corresponding to the auxiliary response subject.

[0012] Secondly, this application provides a power control device for a grid-type energy storage system, comprising: The acquisition module is used to acquire data on the composition type, operating status, and scenario parameters of the hybrid energy storage site. The determination module is used to determine the power change based on the target power and actual output value in the operating status data, and to determine the active power adjustment type based on the power change and time information in the scenario parameter data; to determine the priority response subject and the auxiliary response subject based on the active power adjustment type and composition type data; to perform allocation calculation on the power change at the current moment based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, to obtain the intermediate allocation data for the next moment; and to determine the controller parameter data based on the active power adjustment type. The controller parameter data includes the current loop controller parameters obtained by tuning based on the expected time constant corresponding to different active power adjustment types, and the voltage loop controller parameters obtained by tuning based on the current loop bandwidth. The control module is used to determine the active power command of each energy storage system based on the intermediate allocation data, and send the active power command and controller parameter data to the corresponding energy storage converter so that the energy storage converter can execute power output according to the active power command and controller parameters to complete power control.

[0013] Thirdly, this application provides a computing device, including a memory and a processor; The memory stores one or more computer programs, the one or more computer programs including instructions; when the instructions are executed by the processor, the computing device performs the method as described in any one of the first aspects.

[0014] Fourthly, this application provides a computer-readable storage medium for storing a computer program for performing the method as described in any one of the first aspects.

[0015] Fifthly, this application provides a computer program product comprising one or more computer instructions, wherein when the computer instructions are executed by a computer, the computer performs the method as described in any one of the first aspects.

[0016] As can be seen from the above technical solution, this application has at least the following beneficial effects: In this application, necessary input information for power control is provided by acquiring the composition type data, operating status data, and scenario parameter data of the hybrid energy storage station. The power change is determined based on the target power and actual output value in the operating status data, and the active power adjustment type is determined by combining the time information in the scenario parameter data, ensuring that the power adjustment action matches the control requirements in the time dimension. Priority response subjects and auxiliary response subjects are determined based on the active power adjustment type and composition type data, enabling the division of labor in response among different energy storage devices. The unit-cycle power change limit and state-of-charge constraint of the priority response subject at the current moment, as well as the unit-cycle power of the auxiliary response subject, are also considered. The system uses variation limits and state of charge constraints to allocate and calculate the power change at the current moment, obtaining intermediate allocation data for the next moment, thus reducing the possibility of exceeding the equipment operating boundaries during power regulation. It determines controller parameter data based on the active power adjustment type, ensuring the controller parameters are adapted to the current control scenario. Based on the intermediate allocation data, it determines the active power command for each energy storage system and sends the active power command and controller parameter data to the corresponding energy storage converter. This enables the energy storage converter to execute power output according to the active power command and controller parameters, completing power control, improving the orderliness of the power regulation process, and ultimately achieving coordinated and efficient response of various energy storage devices in the site.

[0017] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0018] Figure 1 A schematic flowchart illustrating a power control method for a grid-type energy storage system provided in this application embodiment; Figure 2 A structural diagram of a VSG-type grid converter provided in this application embodiment; Figure 3 A voltage and current dual inner loop control block diagram is provided for embodiments of this application; Figure 4 A structural diagram of a power control device for a grid-type energy storage system provided in this application embodiment; Figure 5 This is a schematic diagram of a computing device provided in an embodiment of this application. Detailed Implementation

[0019] The terms "first," "second," and "third," etc., used in this application specification and accompanying drawings are used to distinguish different objects, not to limit a specific order.

[0020] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0021] To ensure clarity and conciseness in the description of the following embodiments, a brief introduction to the related technologies is given first: Grid-based energy storage systems are those with independent voltage / frequency support capabilities, capable of actively building and stabilizing the power grid. Hybrid energy storage stations are composed of a combination of energy-type and power-type energy storage systems. Energy-type energy storage systems have large energy capacity and long continuous charge / discharge durations, making them suitable for long-term power support and emergency power supply scenarios, such as lithium-ion energy storage and vanadium redox flow storage. Power-type energy storage systems have fast response speeds and long cycle lives, making them suitable for short-term high-power fluctuations and frequent adjustments, such as supercapacitors.

[0022] Currently, power control in grid-type energy storage stations generally adopts fixed ratio allocation or simple threshold limiting strategies, which only consider power demand or equipment limits and do not combine the differentiated design with the operating scenarios and energy storage characteristics, resulting in poor coordinated control effect between energy-type energy storage systems and power-type energy storage systems.

[0023] In view of this, embodiments of this application provide a power control method for a grid-type energy storage system. To make the technical solution of this application clearer and easier to understand, the power control method for a grid-type energy storage system provided in this application is described with the energy storage site controller as the execution subject. Figure 1 As shown, this figure is a schematic flowchart of a power control method for a grid-type energy storage system provided in an embodiment of this application. The power control method for the grid-type energy storage system includes: S201. Obtain the composition type data, operation status data, and scenario parameter data of the hybrid energy storage station.

[0024] Composition type data is used to identify the type of energy storage system. The energy storage site controller can obtain the composition type data by reading the site configuration file.

[0025] Operational status data refers to real-time operating values ​​generated during the operation of various devices in a hybrid energy storage station, such as target power, actual output, and state of charge (SOC) of each energy storage unit. The energy storage station controller can collect operational status data through sensors, measurement and control devices, and converter communication interfaces.

[0026] Scenario parameter data consists of time-series information related to the scheduling instructions and operational constraints of hybrid energy storage sites, such as time information, emergency call time periods, control cycles, and constraint conditions. The energy storage site controller can obtain scheduling instructions and time period divisions through the grid dispatch communication interface, and generate scenario parameter data by combining preset control cycles and operating mode parameters.

[0027] The data acquisition process described above includes preprocessing steps such as normalization.

[0028] S202. Determine the power change based on the target power and actual output value in the operating status data, and determine the active power adjustment type based on the power change and the time information in the scenario parameter data.

[0029] One possible approach is for the energy storage station controller to determine the power change as the difference between the target power and the actual output value. If the power change is zero, it is determined that no power adjustment is needed. If the power change is non-zero, it is determined whether the current time is within the emergency call period based on time information, that is, the current time is compared and matched with the preset emergency call period. If the current time falls within the emergency call period, the active power adjustment type is set to emergency call. If the current time does not fall within the emergency call period, the active power adjustment type is set to auxiliary frequency regulation.

[0030] The target power is the total active power setpoint issued by the power grid dispatch system to the hybrid energy storage station, serving as the target benchmark for active power allocation between energy-type and power-type energy storage systems. The actual output value is the measured total active power output or absorption of the hybrid energy storage station at the current moment, representing the station's current true power output status. Time information includes various time-related time periods and can be used to determine whether an emergency dispatch period is in effect. Active power adjustment types include emergency dispatch and auxiliary frequency regulation.

[0031] Arranging the target power and actual output of hybrid energy storage stations according to time series can be represented as follows: PP ta (t) ={p ta (1) ,p ta (2) ,p ta(3) ,……,p ta (86400 / T)} PP ac (t) ={p ac (1) ,p ac (2) ,p ac (3) ,……,p ac (86400 / T)} Among them, PP ta (t) The time series represents the target active power of the hybrid energy storage station; T is the sampling period of the discrete time series; t represents the time series number; p ta (1) For PP ta (t) The target power value at the first sampling point; p ta (2) For PP ta (t) The target power value at the second sampling point, p ta (3) For PP ta (t) The target power value at the third sampling point; p ta (86400 / T) For PP ta (t) The target power value at the 86400 / T sampling point; PP ac (t) p represents the time series of actual power output values ​​of a hybrid energy storage station. ac (1) For PP ac (t) The actual output value of the first sampling point; p ac (2) For PP ac (t) The actual output value at the second sampling point; p ac (3) For PP ac (t) The actual output value at the third sampling point; p ac (86400 / T) For PP ac (t) The actual output value at the 86400 / T sampling point; 86400 / T is the total number of time points.

[0032] Suppose the emergency call period issued by the energy storage site controller is from m1 hour n1 minute to m2 hour n2 minute. Mapping this emergency call period to a time series, the resulting time series set is: , can be represented as: .

[0033] remember , ,but Where m1 is the hour at which the emergency call begins; n1 is the minute at which the emergency call begins; m2 is the hour at which the emergency call ends; n2 is the minute at which the emergency call ends; Ty is the set of time series corresponding to the emergency call time period; ty is the time sequence number within the emergency call time series; t em_sta The starting sequence number of the emergency call time series; t em_end This is the end sequence number of the emergency call time series.

[0034] The energy storage site controller obtains the target power p of the hybrid energy storage site at the current time t. ta (t) The actual output value p of the hybrid energy storage station at the current time t ac (t) .

[0035] ①If p ta (t) -p ac (t) If the value is 0, then no adjustment of active power is needed; ②If p ta (t) -p ac (t) If the value is not equal to 0, it is necessary to determine whether the current time is within the emergency call period and proceed to step ③. ③ Determine whether the current time t∈Ty holds true. If it does, the current time is within the emergency call period; if it does not, the current time is within the auxiliary frequency modulation period.

[0036] S203. Determine the priority response subject and auxiliary response subject based on the active power adjustment type and composition type data.

[0037] Among them, the composition type data is used to identify the type of energy storage system, which includes energy-type energy storage system and power-type energy storage system.

[0038] One possible approach is that if the active power adjustment type is emergency dispatch, then the energy-type energy storage system is designated as the priority response subject, and the power-type energy storage system is designated as the auxiliary response subject; if the active power adjustment type is auxiliary frequency regulation, then the power-type energy storage system is designated as the priority response subject, and the energy-type energy storage system is designated as the auxiliary response subject.

[0039] S204. Determine the controller parameter data based on the active power adjustment type.

[0040] The controller parameter data includes current loop controller parameters obtained by tuning the expected time constants corresponding to different active power adjustment types, and voltage loop controller parameters obtained by tuning the current loop bandwidth.

[0041] One possible implementation involves the energy storage station controller tuning the current loop proportional coefficient and current loop integral coefficient based on the desired time constant, filter inductance value, and filter impedance resistance value; determining the current loop bandwidth based on the current loop proportional coefficient and current loop integral coefficient; obtaining the voltage loop proportional coefficient and voltage loop integral coefficient based on the current loop bandwidth using the equal bandwidth method; and combining the current loop proportional coefficient, current loop integral coefficient, voltage loop proportional coefficient, and voltage loop integral coefficient to obtain the controller parameter data.

[0042] The filter inductance value is the parameter value of the inductor component in the filter circuit. The filter impedance resistance value is the parameter value of the resistor component in the filter circuit. The current loop proportional coefficient is the proportional term value used in the current loop controller. The current loop integral coefficient is the integral term value used in the current loop controller. The current loop bandwidth is the frequency range that the current loop control loop can respond to. The equal bandwidth method is a calculation method used to tune the voltage loop parameters. The voltage loop proportional coefficient is the proportional term value used in the voltage loop controller. The voltage loop integral coefficient is the integral term value used in the voltage loop controller.

[0043] If the active power adjustment type is emergency dispatch, the expected time constant is determined to be the expected time constant corresponding to emergency dispatch; if the active power adjustment type is auxiliary frequency regulation, the expected time constant is determined to be the expected time constant corresponding to auxiliary frequency regulation.

[0044] The expected time constant is a time parameter set to match different power regulation conditions. The expected time constant for emergency dispatch is greater than that for auxiliary frequency regulation; a larger expected time constant corresponds to slow response control, which results in lower controller bandwidth, while a smaller expected time constant corresponds to fast response control, which results in higher controller bandwidth. For example, the expected time constant for emergency dispatch can be set to 100ms~500ms, and the expected time constant for auxiliary frequency regulation can be set to 10ms~50ms.

[0045] Current loop controller parameters are the adjustment values ​​used in the current loop control loop, and may include, but are not limited to, the proportional coefficient and integral coefficient of the current loop. The current loop bandwidth is the operating frequency range that the current loop control loop can cover. Voltage loop controller parameters are the adjustment values ​​used in the voltage loop control loop, and may include, but are not limited to, the proportional coefficient and integral coefficient of the voltage loop.

[0046] In a hybrid energy storage station, the transfer functions of the current-loop PI controller, voltage-loop PI controller, current-loop PI controller, and voltage-loop PI controller structures for the energy-type energy storage system, the power-type energy storage system, and the power-type energy storage system can be expressed as:

[0047] in, Let be the transfer function of the PI controller, and s be the Laplace operator. It is a proportionality coefficient. These are the integral coefficients. The proportional coefficients include the proportional coefficients of the current-loop PI controller for energy-type energy storage systems, the proportional coefficients of the voltage-loop PI controller for energy-type energy storage systems, and the proportional coefficients of the current-loop PI controller for power-type energy storage systems; the integral coefficients include the integral coefficients of the current-loop PI controller for energy-type energy storage systems, the integral coefficients of the voltage-loop PI controller for energy-type energy storage systems, and the integral coefficients of the current-loop PI controller for power-type energy storage systems.

[0048] The preset PI-PI controller parameters can be applied in self-charging and self-discharging scenarios, but the optimization process for the voltage and current loop PI-PI controller parameters in emergency dispatch and auxiliary frequency modulation scenarios is as follows: (1) Parameter tuning method for current loop PI controller based on desired time constant In emergency dispatch and auxiliary frequency regulation scenarios, the parameter optimization process for the current loop PI controller of energy-type energy storage systems and power-type energy storage systems is as follows: The first-order system transfer function of the controlled object in the current loop is:

[0049] in, This is the transfer function of the controlled object in the current loop. It is a filter inductor. This is the filter impedance resistor. and The transfer function of the closed-loop system composed of two transfer functions is:

[0050] in, Let be the transfer function of the current loop closed-loop system, describing the dynamic response from current command to actual current.

[0051] To achieve the desired current loop control effect, corresponding desired filter inductor current tracking time constants are set for different scenarios and different energy storage systems, such as... The desired filter inductor current tracking time constant for energy storage systems in emergency deployment scenarios. This refers to the desired filter inductor current tracking time constant for power storage systems in emergency deployment scenarios. To assist energy storage systems in frequency regulation scenarios in tracking the desired filter inductor current to the time constant, To assist in frequency regulation scenarios, the desired filter inductor current tracking time constant of power storage systems must satisfy the following conditions: , .

[0052] Based on the aforementioned desired filter inductor current tracking time constant, the current loop PI controller parameters for each scenario are calculated. For example, the current loop PI controller parameters for an energy storage system in an emergency dispatch scenario should be: proportional coefficient. Integral coefficient ; In emergency deployment scenarios, the current loop PI controller parameters for power storage systems should be: proportional coefficient. Integral coefficient ; In the context of assisted frequency regulation, the current loop PI controller parameters for energy storage systems should be: proportional coefficient. Integral coefficient ; In the case of assisted frequency regulation, the current loop PI controller parameters of a power-type energy storage system should be: proportional coefficient. Integral coefficient .

[0053] Building upon this, a method for tuning voltage loop PI controller parameters based on equal bandwidth is further proposed to achieve synergistic optimization of dual-loop control. When the controlled object remains constant, the controller bandwidth directly affects the control performance of the cascade system. When the ratio of PI parameters in the voltage loop to the current loop remains constant, equal voltage and current loop bandwidths ensure optimal control performance. Therefore, the voltage loop PI controller parameters can be tuned synchronously based on the current loop bandwidth after the current loop PI parameters have been tuned.

[0054] Based on the above tuning method, in emergency dispatch scenarios, the voltage loop PI controller parameters of the energy storage system should be: proportional coefficient. Integral coefficient ;in, The proportional gain of the voltage loop PI controller in an energy storage system; The proportional coefficient of the current loop PI controller for the already tuned energy storage system; The integral coefficient of the voltage loop PI controller for the energy storage system; The integral coefficients of the current loop PI controller for the tuned energy storage system.

[0055] Similarly, in emergency dispatch scenarios, the voltage loop PI controller parameters for power-type energy storage systems should be: proportional coefficient. Integral coefficient ;in, The proportional gain of the voltage loop PI controller in a power-type energy storage system; The proportional gain of the current loop PI controller for the power storage system has been tuned. The integral coefficient of the voltage loop PI controller for the power-type energy storage system; The integral coefficient of the current loop PI controller for the tuned power-type energy storage system.

[0056] Similarly, in the case of assisted frequency regulation, the voltage loop PI controller parameters of the energy storage system should be: proportional coefficient. Integral coefficient .

[0057] Similarly, in the auxiliary frequency regulation scenario, the current loop PI controller parameters of the power storage system should be: proportional coefficient. Integral coefficient .

[0058] S205. Based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, the power change at the current moment is allocated and calculated to obtain the intermediate allocation data for the next moment; the active power command of each energy storage system is determined according to the intermediate allocation data, and the active power command and controller parameter data are sent to the corresponding energy storage converter so that the energy storage converter executes power output according to the active power command and controller parameters to complete power control.

[0059] One possible approach involves determining whether the unit-cycle power change limit of the priority response subject at the current moment meets the power change requirement, and determining whether the priority subject has the ability to independently handle the adjustment requirement; and determining whether the state of charge of the priority response subject at the current moment is within a preset safe range; determining the first power component of the priority response subject at the next moment based on the determination result, and taking the difference between the power change and the first power component as the second power component of the auxiliary response subject at the next moment, provided that the unit-cycle power change limit and state of charge constraint of the auxiliary response subject are met; and obtaining intermediate allocation data based on the first power component and the second power component.

[0060] The system generates an active power command for the priority response subject at the next moment based on the first power component in the intermediate allocation data, and generates an active power command for the auxiliary response subject at the next moment based on the second power component. The active power command, current loop controller parameters, and voltage loop controller parameters for the priority response subject at the next moment are sent to the energy storage converter corresponding to the priority response subject. The system also sends the active power command, current loop controller parameters, and voltage loop controller parameters for the auxiliary response subject at the next moment to the energy storage converter corresponding to the auxiliary response subject.

[0061] The unit-cycle power variation limit is the upper limit of the allowable power variation amplitude within a single control cycle, set to avoid current surges in energy storage units. It limits the power regulation rate of the energy storage unit. The state-of-charge (SOC) constraint is a boundary condition set to prevent overcharging or over-discharging of energy storage units. The SOC of the energy storage unit must always be maintained within a preset safe range (e.g., 10%~90%). If it exceeds this range, the unit will no longer participate in power allocation. Intermediate allocation data is temporary data generated during the power variation decomposition process, used to record the power values ​​to be allocated to each energy storage system and the constraint verification results. The active power command is the final power execution value issued by the energy storage site controller to each energy storage system. Each energy storage system adjusts its output according to this command to collectively achieve the target total output of the site. The first power component is the power value allocated to the priority response subject (e.g., energy-type energy storage units in emergency dispatch scenarios), used to prioritize handling power variations. The second power component is the power value allocated to the auxiliary response subject (e.g., power-type energy storage units in emergency dispatch scenarios), used to cooperate with the priority subject in completing power regulation. The preset safety range is a safe operating range defined for the state of charge of the energy storage unit. The state of charge must always remain within this range; otherwise, a protection mechanism will be triggered, limiting or stopping the power regulation of the unit. The energy storage converter is the hardware device that performs power regulation. Based on the received active power command, it converts the DC power of the energy storage unit into AC power output that meets the grid requirements.

[0062] Let the limit of the unit cycle power variation of the energy storage system in the hybrid energy storage station be ±P. res_eneThis refers to the power variation limit of an energy-type energy storage system per unit cycle, expressed in (MW / T) / second; the power variation limit of a power-type energy storage system in a hybrid energy storage station is ±P. res_pow This refers to the limit of power change per unit cycle for power-type energy storage systems, expressed in units of (MW / T) / second.

[0063] The analysis proceeds according to the type of active power adjustment. First, the case of emergency dispatch type is analyzed (emergency dispatch type generally lasts longer and has fewer power changes, so energy storage system is preferred to respond to active power changes, and power storage system makes up for the energy storage system's response deficit). A total of 13 cases are included.

[0064] The change in active power per unit cycle of the hybrid energy storage station at the current time t should be: △p (t) =p ta (t) -p ac (t) Among them, △p (t) p represents the change in active power per unit cycle of the hybrid energy storage station at the current time t. ta (t) p represents the target power of the hybrid energy storage station at the current time t. ac (t) This represents the actual output value of the hybrid energy storage station at the current time t.

[0065] Let p be the actual output value of the energy storage system at the current time t. ac_ene （t） The actual output value of the power-type energy storage system at the current time t is p. ac_pow （t） The target power of the energy storage system at time t is p. ta_ene （t） The target power of the current power-type energy storage system at time t is p. ta_pow （t） Then there is p ac (t) =p ac_ene （t） +p ac_pow （t） p ta (t) =p ta_ene （t） +p ta_pow （t） The analysis considers the scenario where the active power adjustment type is emergency dispatch. In this case, energy-type energy storage systems are the primary response agents, while power-type energy storage systems serve as secondary response agents. Next, the analysis determines the power change Δp of the hybrid energy storage station per unit cycle at the current time t. (t) Whether all power can be supplied by energy storage systems depends primarily on whether the unit-cycle power change limit of the energy storage system meets the power change requirement at the current moment, and whether the state of charge of the energy storage system is within the preset safe range at the current moment. The specific scenarios are as follows: (1) The power change limit per unit cycle of the energy storage system meets the power change requirement, and the state of charge of the energy storage system at the current moment is within the preset safe range.

[0066] If |△p (t) |≤P res_ene And the state of charge (SOC) of the energy storage system at time t+1 ene (t+1) Satisfying 10% ≤ SOC ene (t+1) A value of ≤90% indicates that the power change of the energy storage system per unit cycle meets the power change requirement, and the current state of charge (SOC) of the energy storage system is within the preset safe range. ene (t+1) The calculation formula is as follows:

[0067] in, Coulomb efficiency on the DC side of an energy storage system is the ratio of the actual output power to the actual input power during the DC charging and discharging process of the energy storage system, used to account for charging and discharging losses. The capacity of an energy storage system is the rated total capacity of the energy storage system. This refers to the voltage of an energy storage system, specifically the rated operating voltage of the energy storage system; SOC (State of Charge). ene (t+1) The state of charge of the energy storage system at time t+1; p ac_ene （t） The actual output value of the energy storage system at the current time t is the active power value actually output by the energy storage system at the current time.

[0068] Case 1: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p (t)At the next moment (t+1), the target power of the power-type energy storage system in the hybrid energy storage station should be p. ta_pow （t+1） =p ac_pow （t） That is, the first power component is Δp. (t) The second power component is 0.

[0069] (2) The power change limit per unit cycle of the energy storage system meets the power change requirement, and the state of charge of the energy storage system at the current moment is not within the preset safe range.

[0070] That is, |△p (t) |≤P res_ene And the state of charge (SOC) of the energy storage system at time t+1 ene (t+1) Meets SOC ene (t +1) <10% or SOC ene (t+1) If the active power change per unit cycle is greater than 90%, then the power change of the hybrid energy storage station needs to be provided jointly by the energy-type energy storage system and the power-type energy storage system. Therefore, the power change Δp that the energy-type energy storage system can provide per unit cycle is... ene1 (t) Specifically, it can be expressed as:

[0071] in, This represents the state of charge of the energy storage system at the current time t.

[0072] Therefore, the power change Δp required by a power-type energy storage system per unit cycle of active power is... pow1 (t) For △p pow1 (t) =△p (t) -△p ene1 (t) Next, the actual output power of the power storage system needs to be determined by the power change limit of the power storage system per unit cycle to meet the power change requirement and the current state of charge of the energy storage system within the preset safe range.

[0073] 1) When the power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge of the energy-type energy storage system is within the preset safe range at the current moment: That is, satisfying |△p pow1 (t) |≤P res_pow And the state of charge (SOC) of the power-type energy storage system at time t+1pow (t+1) Satisfying 10% ≤ SOC pow (t+1) ≤90%. Among them, SOC pow (t+1) The calculation formula is as follows:

[0074] in, ρ represents the state of charge of the power-type energy storage system at the current time t. pow Q represents the coulombic efficiency (COP) of a power-type energy storage system on the DC side. It is the ratio of output energy to input energy during the DC-side charging and discharging process of the system, used to correct for charging and discharging losses. pow For power-type energy storage system capacity, V pow This refers to the voltage of a power-type energy storage system.

[0075] Case 2: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene1 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow1 (t) That is, the first power component is Δp. ene1 (t) The second power component is Δp pow1 (t) .

[0076] 2) The power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge of the energy-type energy storage system is not within the preset safe range at the current moment: That is, |△p pow1 (t) |≤P res_pow And the state of charge (SOC) of the power-type energy storage system at time t+1 pow (t+1) Meets SOC pow (t+1) <10% or SOC pow (t+1) >90%. Among them, the power-type energy storage system can provide the power change Δp per unit cycle of active power. pow2 (t) It can be calculated using the following formula:

[0077] in, This represents the state of charge of the power-type energy storage system at the current time t.

[0078] Case 3: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene1 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow2 (t) That is, the first power component is Δp. ene1 (t) The second power component is Δp pow2 (t) .

[0079] 3) The unit cycle power variation limit of the power-type energy storage system does not meet the power variation requirement: That is, |△p pow1 (t) |>P res_pow At this point, the change in active power per unit cycle that the power-type energy storage system can provide is tentatively defined as P. res_pow To determine whether the state of charge of a power-type energy storage system is within a preset safe range: i) Whether the state of charge (SOC) of the power-type energy storage system is within the preset safe range, i.e., the SOC of the power-type energy storage system at time t+1. pow (t+1) Satisfying 10% ≤ SOC pow (t+1) ≤90%. Among them, SOC pow (t+1) The calculation formula is as follows:

[0080] Case 4: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene1 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t）+P res_pow That is, the first power component is Δp. ene1 (t) The second power component is P. res_pow .

[0081] ii) The state of charge (SOC) of the power-type energy storage system is not within the preset safe range, i.e., the SOC of the power-type energy storage system at time t+1. pow (t+1) Meets SOC pow (t+1) <10% or SOC pow (t+1) >90%. Among them, the power-type energy storage system can provide the power change Δp per unit cycle of active power. pow3 (t) It can be calculated using the following formula:

[0082] Case 5: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene1 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow3 (t) That is, the first power component is Δp. ene1 (t) The second power component is Δp pow3 (t) .

[0083] (3) The power change limit per unit cycle of the energy storage system does not meet the power change requirements.

[0084] That is, |△p (t) |>P res_ene At this point, the change in active power per unit cycle that the energy storage system can provide is tentatively defined as P. res_ene To determine whether the state of charge of the energy storage system is within a preset safe range: 1) The state of charge of the energy storage system is within the preset safe range. That is, the state of charge (SOC) of the energy storage system at time t+1. ene (t+1) Satisfying 10% ≤ SOC ene (t+1) ≤90%. Among them, SOCene (t+1) The calculation formula is as follows:

[0085] Then, at this time, the hybrid energy storage station energy type energy storage system can be calculated according to P. res_ene The power change per unit cycle is provided by the active power change. For power-type energy storage systems, the required active power change per unit cycle is Δp. pow4 (t) =△p (t) -P res_ene Next, the output power of the power storage system needs to be determined by whether the unit cycle power change limit of the power storage system meets the power change requirement and whether the state of charge is within the preset safe range.

[0086] ① The power variation limit per unit cycle of the power-type energy storage system meets the power variation requirement, and the state of charge is within the preset safe range: If |△p pow4 (t) |≤P res_pow And the state of charge (SOC) of the power-type energy storage system at time t+1 pow (t+1) Satisfying 10% ≤ SOC pow (t+1) ≤90%. Among them, SOC pow (t+1) The calculation formula is as follows:

[0087] Case 6: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +P res_ene The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow4 (t) That is, the first power component is P. res_ene The second power component is Δp pow4 (t) .

[0088] ② The power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge is not within the preset safe range: That is, |△p pow4 (t) |≤P res_powAnd the state of charge (SOC) of the power-type energy storage system at time t+1 pow (t+1) Meets SOC pow (t+1) <10% or SOC pow (t+1) >90%. Among them, the power-type energy storage system can provide the power change Δp per unit cycle of active power. pow5 (t) It can be calculated using the following formula:

[0089] Case 7: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +P res_ene The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow5 (t) That is, the first power component is P. res_ene The second power component is Δp pow5 (t) .

[0090] ③ The power variation limit per unit cycle of the power-type energy storage system does not meet the power variation requirement: That is, |△p pow4 (t) |>P res_pow At this point, the change in active power per unit cycle that the power-type energy storage system can provide is tentatively defined as P. res_pow To determine whether the state of charge of a power-type energy storage system is within a preset safe range: i) The state of charge (SOC) of the power-type energy storage system is within a preset safe range, i.e., the SOC of the power-type energy storage system at time t+1. pow (t+1) Satisfying 10% ≤ SOC pow (t+1) ≤90%. Among them, SOC pow (t+1) The calculation formula is as follows:

[0091] Case 8: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =pac_ene （t） +P res_ene The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +P res_pow That is, the first power component is P. res_ene The second power component is P. res_pow .

[0092] ii) The state of charge (SOC) of the power energy storage system is not within the preset safe range: that is, the SOC of the power energy storage system at time t+1. pow (t+1) Meets SOC pow (t+1) <10% or SOC pow (t+1) If the power storage system of the hybrid energy storage station is >90%, then the power storage system cannot operate according to P. res_pow If the power change per unit cycle is provided, then the power change Δp that a power-type energy storage system can provide per unit cycle is... pow6 (t) It can be calculated using the following formula:

[0093] Case 9: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +P res_ene The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow6 (t) That is, the first power component is P. res_ene The second power component is Δp pow6 (t) .

[0094] 2) If the state of charge (SOC) of the energy storage system is not within the preset safe range: that is, the SOC of the energy storage system at time t+1 ene (t+1) Meets SOC ene (t+1) <10% or SOC ene (t+1) If the energy storage capacity is >90%, then the hybrid energy storage station's energy storage system cannot operate according to P. res_eneIf the change in active power per unit cycle is provided, then the change in active power per unit cycle that an energy storage system can provide is Δp. ene2 (t) It can be calculated using the following formula:

[0095] Then, at this time, the hybrid energy storage station energy-type energy storage system can be calculated according to Δp. ene2 (t) The power change per unit cycle is provided by the active power change. For power-type energy storage systems, the required active power change per unit cycle is Δp. pow7 (t) =△p (t) -△p ene2 (t) Next, the output power of the power storage system needs to be determined by whether the unit cycle power change limit of the power storage system meets the power change requirement and whether the state of charge is within the preset safe range.

[0096] ① The power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge of the power-type energy storage system at the current moment is within the preset safe range: That is, satisfying |△p pow7 (t) |≤P res_pow And the state of charge (SOC) of the power-type energy storage system at time t+1 pow (t+1) Satisfying 10% ≤ SOC pow (t+1) ≤90%. Among them, SOC pow (t+1) The calculation formula is as follows:

[0097] Case 10: In this case, the target active power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene2 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow7 (t) That is, the first power component is Δp. ene2 (t) The second power component is Δp pow7 (t) .

[0098] ② The power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge of the power-type energy storage system at the current moment is not within the preset safe range: That is, |△p pow7 (t) |≤P res_pow And the state of charge (SOC) of the power-type energy storage system at time t+1 pow (t+1) Meets SOC pow (t+1) <10% or SOC pow (t+1) >90%. Among them, power-type energy storage systems can provide the power change Δp per unit cycle of active power. pow8 (t) It can be calculated using the following formula:

[0099] Case 11: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene2 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow8 (t) That is, the first power component is Δp. ene2 (t) The second power component is Δp pow8 (t) .

[0100] ③ The power variation limit per unit cycle of the power-type energy storage system does not meet the power variation requirement: That is, |△p pow7 (t) |>P res_pow At this point, the change in active power per unit cycle that the power-type energy storage system can provide is tentatively defined as P. res_pow To determine whether the state of charge of a power-type energy storage system is within a preset safe range: i) The state of charge (SOC) of the power energy storage system is within a preset safe range: that is, the SOC of the power energy storage system at time t+1. pow (t+1) Satisfying 10% ≤ SOC pow (t+1) ≤90%. Among them, SOC pow(t+1) The calculation formula is as follows:

[0101] Case 12: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene2 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +P res_pow That is, the first power component is Δp. ene2 (t) The second power component is P. res_pow .

[0102] ii) The state of charge (SOC) of the power energy storage system is not within the preset safe range: that is, the SOC of the power energy storage system at time t+1. pow (t+1) Meets SOC pow (t+1) <10% or SOC pow (t+1) If the power storage system of the hybrid energy storage station is >90%, then the power storage system cannot operate according to P. res_pow If the power change per unit cycle is provided, then the power change Δp that a power-type energy storage system can provide per unit cycle is... pow9 (t) It can be calculated using the following formula:

[0103] Case 13: In this case, the target power of the energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_ene （t+1） =p ac_ene （t） +△p ene2 (t) The target power of a power-type energy storage system should be p. ta_pow （t+1） =p ac_pow （t） +△p pow9 (t) That is, the first power component is Δp. ene2 (t) The second power component is Δp pow9 (t) .

[0104] Next, we analyze the case where the active power adjustment type is auxiliary frequency regulation. When the active power adjustment type is emergency dispatch, the power-type energy storage system is the priority response subject, and the energy-type energy storage system is the auxiliary response subject (the auxiliary frequency regulation type is generally shorter in duration and the power changes more frequently, so the power-type energy storage system is given priority to respond to the active power changes, and the power-type energy storage system's response shortfall is then made up by the energy-type energy storage system).

[0105] Determine the change in active power Δp of the hybrid energy storage station per unit cycle at the current time t. (t) Whether all power-type energy storage systems can provide power depends primarily on whether the unit-cycle power change limit of the power-type energy storage system at the current moment meets the power change requirement, and whether the state of charge of the power-type energy storage system at the current moment is within the preset safe range. The specific scenarios are as follows: (1) The power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge of the power-type energy storage system is within the preset safe range: That is, satisfying |△p (t) |≤P res_pow Furthermore, the state of charge (SOC) of the power-type energy storage system at time t+1 satisfies 10% ≤ SOC. pow (t+1) ≤90%. Among them, SOC pow (t+1) The calculation formula is as follows:

[0106] Case 14: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p (t) The target active power of the energy storage system in a hybrid energy storage station should be p. ta_ene （t+1） =p ac_ene （t） That is, the first power component is 0; the second power component is Δp. (t) .

[0107] (2) When the power change limit per unit cycle of the power-type energy storage system meets the power change requirement, and the state of charge of the power-type energy storage system is not within the preset safe range: That is, |△p (t) |≤P res_pow Furthermore, the state of charge (SOC) of the power-type energy storage system at time t+1 satisfies the State of Charge (SOC) requirement. pow(t+1) <10% or SOC ene (t+1) >90%. The power change Δp of a power-type energy storage system per unit cycle can be provided by the system. pow10 (t) It can be calculated using the following formula:

[0108] Therefore, the change in active power per unit cycle that an energy storage system needs to provide is Δp. ene3 (t) =△p (t) -△p pow10 (t) Next, the output power of the energy storage system needs to be determined by whether the power change limit per unit cycle of the energy storage system meets the power change requirement and whether the state of charge is within the preset safe range.

[0109] 1) The power variation limit per unit cycle of the energy storage system meets the power variation requirement, and the state of charge of the energy storage system at the current moment is within the preset safe range: That is, satisfying |△p ene3 (t) |≤P res_ene Furthermore, the state of charge (SOC) of the energy storage system at time t+1 satisfies 10% ≤ SOC. ene (t+1) ≤90%. Among them, SOC ene (t+1) The calculation formula is as follows:

[0110] Case 15: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow10 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene3 (t) That is, the first power component is Δp. ene3 (t) The second power component is Δp pow10 (t) .

[0111] 2) The unit cycle power change limit of the energy storage system meets the power change requirement, and the current state of charge of the energy storage system is not within the preset safe range: That is, |△p ene3 (t) |≤P res_ene Furthermore, the state of charge (SOC) of the energy storage system at time t+1 satisfies the State of Charge (SOC) requirement. ene (t+1) <10% or SOC ene (t+1) >90%. Energy storage systems can provide the power change Δp per unit cycle of active power. ene4 (t) It can be calculated using the following formula:

[0112] Case 16: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow10 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene4 (t) That is, the first power component is Δp. ene4 (t) The second power component is Δp pow10 (t) .

[0113] 3) The unit cycle power variation limit of the energy storage system does not meet the power variation requirement: That is, |△p ene3 (t) |>P res_ene At this point, the change in active power per unit cycle that the energy storage system can provide is tentatively defined as P. res_ene To determine whether the state of charge of the energy storage system is within a preset safe range: i) The state of charge of the energy storage system is within a preset safe range: That is, the state of charge (SOC) of the energy storage system at time t+1 satisfies 10% ≤ SOC. ene (t+1) ≤90%. Among them, SOC ene (t +1) The calculation formula is as follows:

[0114] Case 17: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow10 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +P res_ene That is, the first power component is P. res_ene The second power component is Δp pow10 (t) .

[0115] ii) The state of charge of the energy storage system is not within the preset safe range: That is, the state of charge (SOC) of the energy storage system at time t+1 satisfies the State of Charge (SOC) requirement. ene (t+1) <10% or SOC ene (t+1) If the energy storage capacity is >90%, then the hybrid energy storage station's energy storage system cannot operate according to P. res_ene If the change in active power per unit cycle is provided, then the change in active power per unit cycle that an energy storage system can provide is Δp. ene5 (t) It can be calculated using the following formula:

[0116] Case 18: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow10 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene5 (t) That is, the first power component is Δp. ene5 (t) The second power component is Δp pow10 (t) .

[0117] (2) The power change limit per unit cycle of the power-type energy storage system does not meet the power change requirements.

[0118] That is, |△p (t) |>P res_pow At this point, the change in active power per unit cycle that the power-type energy storage system can provide is tentatively defined as P. res_pow To determine whether the state of charge of a power-type energy storage system is within a preset safe range: 1) If the state of charge of the power-type energy storage system is within the preset safe range: That is, the state of charge (SOC) of the power-type energy storage system at time t+1 satisfies 10% ≤ SOC. pow (t+1) ≤90%. Among them, SOC pow (t +1) The calculation formula is as follows:

[0119] Then, at this time, the power-type energy storage system of the hybrid energy storage station can be calculated according to P. res_pow The energy storage system needs to provide the change in active power per unit cycle, which is Δp. ene6 (t) =△p (t) -P res_pow Next, the output power of the energy storage system needs to be determined by whether the change in active power per unit cycle exceeds the limit and whether the state of charge (SOC) exceeds the limit.

[0120] ① The unit cycle power variation limit of the energy storage system meets the power variation requirement, and the state of charge of the energy storage system is within the preset safe range: That is, satisfying |△p ene6 (t) |≤P res_ene Furthermore, the state of charge (SOC) of the energy storage system at time t+1 satisfies 10% ≤ SOC. ene (t+1) ≤90%. Among them, SOC ene (t+1) The calculation formula is as follows:

[0121] Case 19: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +P res_pow The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t）+△p ene6 (t) That is, the first power component is Δp. ene6 (t) The second power component is P. res_pow .

[0122] ② The unit cycle power change limit of the energy storage system meets the power change requirement, and the state of charge of the energy storage system is not within the preset safe range: That is, |△p ene6 (t) |≤P res_ene And the SOC of the energy storage system at time t+1 satisfies the SOC ene (t+1) <10% or SOC ene (t+1) >90%. Energy storage systems can provide the power change Δp per unit cycle of active power. ene7 (t) It can be calculated using the following formula:

[0123] Case 20: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +P res_pow The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene7 (t) That is, the first power component is Δp. ene7 (t) The second power component is P. res_pow .

[0124] ③ The unit cycle power variation limit of the energy storage system does not meet the power variation requirement: That is, |△p ene6 (t) |>P res_ene At this point, the change in active power per unit cycle that the energy storage system can provide is tentatively defined as P. res_ene To determine whether the state of charge of the energy storage system is within a preset safe range: i) The state of charge (SOC) of the energy storage system is within a preset safe range: that is, the SOC of the energy storage system at time t+1 satisfies 10% ≤ SOC. ene (t+1) ≤90%. Among them, SOCene (t+1) The calculation formula is as follows:

[0125] Case 21: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +P res_pow The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +P res_ene That is, the first power component is P. res_ene The second power component is P. res_pow .

[0126] ii) The state of charge (SOC) of the energy storage system is not within the preset safe range: that is, the SOC of the energy storage system at time t+1 satisfies the SOC. ene (t+1) <10% or SOC ene (t+1) >90%. Energy storage systems can provide the power change Δp per unit cycle of active power. ene8 (t) It can be calculated using the following formula:

[0127] Case 22: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +P res_pow The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene8 (t) That is, the first power component is Δp. ene8 (t) The second power component is P. res_pow .

[0128] 2) If the state of charge of the power-type energy storage system is not within the preset safe range: That is, the state of charge (SOC) of the power-type energy storage system at time t+1 satisfies the State of Charge (SOC) requirement. pow (t+1) <10% or SOC pow(t+1) >90%. The power change Δp of a power-type energy storage system per unit cycle can be provided by the system. pow11 (t) It can be calculated using the following formula.

[0129]

[0130] Then, at this time, the power-type energy storage system of the hybrid energy storage station can be calculated according to Δp. pow11 (t) The energy storage system needs to provide the change in active power per unit cycle, which is Δp. ene9 (t) =△p (t) -△p pow11 (t) Next, the output power of the energy storage system needs to be determined by whether the change in active power per unit cycle exceeds the limit and whether the state of charge (SOC) exceeds the limit.

[0131] ① The unit cycle power variation limit of the energy storage system meets the power variation requirement, and the state of charge of the energy storage system is within the preset safe range: That is, satisfying |△p ene9 (t) |≤P res_ene Furthermore, the state of charge (SOC) of the energy storage system at time t+1 satisfies 10% ≤ SOC. ene (t+1) ≤90%. Among them, SOC ene (t+1) The calculation formula is as follows:

[0132] Case 23: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow11 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene9 (t) That is, the first power component is Δp. ene9 (t) The second power component is Δp pow11 (t) .

[0133] ② The unit cycle power change limit of the energy storage system meets the power change requirement, but the state of charge of the energy storage system is not within the preset safe range: That is, |△p ene9 (t) |≤P res_ene Furthermore, the state of charge (SOC) of the energy storage system at time t+1 satisfies the State of Charge (SOC) requirement. ene (t+1) <10% or SOC ene (t+1) If the energy storage capacity is >90%, then the hybrid energy storage station's energy storage system cannot operate according to △p. ene9 (t) If the change in active power per unit cycle is provided, then the change in active power per unit cycle that an energy storage system can provide is Δp. ene10 (t) It can be calculated using the following formula:

[0134] Case 24: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow11 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene10 (t) That is, the first power component is Δp. ene10 (t) The second power component is Δp pow11 (t) .

[0135] ③ The unit cycle power variation limit of the energy storage system does not meet the power variation requirement: That is, |△p ene9 (t) |>P res_ene At this point, the change in active power per unit cycle that the energy storage system can provide is tentatively defined as P. res_ene To determine whether the State of Charge (SOC) of an energy storage system exceeds the limit: i) The state of charge (SOC) of the energy storage system is within a preset safe range: at time t+1, the SOC of the energy storage system satisfies 10% ≤ SOC. ene (t+1) ≤90%. Among them, SOC ene (t+1) The calculation formula is as follows:

[0136] Case 25: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow11 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +P res_ene That is, the first power component is P. res_ene The second power component is Δp pow11 (t) .

[0137] ii) The state of charge (SOC) of the energy storage system is not within the preset safe range: that is, the SOC of the energy storage system at time t+1 satisfies the SOC. ene (t+1) <10% or SOC ene (t+1) If the energy storage capacity is >90%, then the hybrid energy storage station's energy storage system cannot operate according to P. res_ene If the change in active power per unit cycle is provided, then the change in active power per unit cycle that an energy storage system can provide is Δp. ene11 (t) It can be calculated using the following formula:

[0138] Case 26: In this case, the target active power of the power-type energy storage system in the hybrid energy storage station at the next time step (t+1) should be p. ta_pow （t+1） =p ac_pow （t） +△p pow11 (t) The target power of an energy storage system should be p. ta_ene （t+1） =p ac_ene （t） +△p ene11 (t) That is, the first power component is Δp. pow11 (t) The second power component is Δp pow11 (t) .

[0139] The execution of power commands and the issuance of control parameters for each energy storage unit are all based on the voltage and current dual-inner-loop control structure of the grid-type converter. For ease of understanding, the following section will combine... Figure 2 and Figure 3 To explain, Figure 2 This is a structural diagram of a VSG (Virtual Synchronous Generator) type grid-connected converter. Figure 3 This is the corresponding voltage and current dual inner loop control block diagram. Where, U dc It is the DC side voltage, C dc It is the DC-side capacitor, e abc It is the three-phase voltage of the converter, L f It is a filter inductor, i labc It is the three-phase current of the filter inductor, u tabc It is the three-phase voltage of the filter capacitor, i tabc It is the three-phase current of the grid-side inductor, C f It is a filter capacitor. It is the port voltage phase angle, u tdq It is the dq component of the filter capacitor voltage, i tdq It is the dq component of the grid-side inductor current, i ldq P is the dq component of the filter inductor current, P is the calculated active power, and Q is the calculated reactive power. set It is the target power, that is, the target benchmark for active power allocation between energy-type energy storage units and power-type energy storage units, Q. set It is the target value of the total reactive power of the power station, providing a target benchmark for reactive power control of the power station. td * This is the reference value for the d-axis component of the filter capacitor voltage, u. tq * This is the reference value for the q-axis component of the filter capacitor voltage, e dq * It is the dq component of the converter's three-phase reference voltage, e abc * It is the three-phase reference voltage of the converter.

[0140] This application, based on emergency dispatch / auxiliary frequency modulation, will target power P set Decomposed into energy-type energy storage target power p ta_ene and power type energy storage target power p ta_pow In voltage loop control, u tdq For feedback quantity, in u td * u tq * As a reference value, the filter inductor current reference value is calculated by the voltage loop PI controller. The voltage loop parameters are adaptively tuned using the equal bandwidth method of this application; in the current loop control, i...ldq As a feedback quantity, it tracks the current command output from the voltage loop and outputs the converter voltage command e through the current loop PI controller. dq * The current loop controller parameters are adaptively tuned using the desired time constant method of this application; the converter output will include e dq * Transform into e abc * ,control Figure 2 The converter switches to output voltage and power that meet the requirements. After the target power of each energy storage unit is executed by the converter, the total active power output of the power station reaches P. set Complete the power control of the grid-type energy storage system.

[0141] Based on the above, the power control method for grid-type energy storage systems provides necessary input information for power control by acquiring the composition type data, operating status data, and scenario parameter data of the hybrid energy storage station. It determines the power change based on the target power and actual output value in the operating status data, and determines the active power adjustment type by combining the time information in the scenario parameter data, ensuring that the power adjustment action matches the control requirements in the time dimension. It determines the priority response subject and auxiliary response subject based on the active power adjustment type and composition type data, realizing the division of labor response among different energy storage devices. Based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the auxiliary response subject... The system calculates the power change limit per unit cycle and the state of charge constraint for the current energy storage system, and distributes the power change at the current moment to obtain intermediate distribution data for the next moment, reducing the possibility of exceeding the equipment operating boundary during power regulation. It determines controller parameter data based on the active power adjustment type, ensuring the controller parameters are adapted to the current control scenario. Based on the intermediate distribution data, it determines the active power command for each energy storage system and sends the active power command and controller parameter data to the corresponding energy storage converter. This enables the energy storage converter to execute power output according to the active power command and controller parameters, completing power control, improving the orderliness of the power regulation process, and ultimately achieving coordinated and efficient response of various energy storage devices in the site.

[0142] The above text combined Figure 1 The power control method for grid-type energy storage systems provided in this application embodiment has been described in detail. The apparatus and equipment provided in this application embodiment will be described below with reference to the accompanying drawings.

[0143] This application also provides a power control device for a grid-type energy storage system, such as... Figure 4 As shown in the figure, this is a schematic diagram of a power control device for a grid-type energy storage system provided in an embodiment of this application. The device includes: The acquisition module 301 is used to acquire the composition type data, operation status data and scenario parameter data of the hybrid energy storage station; The determination module 302 is used to determine the power change based on the target power and actual output value in the operating status data, and to determine the active power adjustment type based on the power change and time information in the scenario parameter data; to determine the priority response subject and the auxiliary response subject based on the active power adjustment type and composition type data; to perform allocation calculation on the power change at the current moment based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, to obtain the intermediate allocation data for the next moment; and to determine the controller parameter data based on the active power adjustment type; wherein, the controller parameter data includes the current loop controller parameters obtained by tuning based on the expected time constant corresponding to different active power adjustment types, and the voltage loop controller parameters obtained by tuning based on the current loop bandwidth. The control module 303 is used to determine the active power command of each energy storage system based on the intermediate allocation data, and send the active power command and controller parameter data to the corresponding energy storage converter so that the energy storage converter can perform power output according to the active power command and controller parameters to complete power control.

[0144] In some possible implementations, module 302 is specifically used for: The difference between the target power and the actual output power is defined as the power change. If the power change is non-zero, then determine whether the current moment is within the emergency call period based on the time information; If the current time is within the emergency call period, the active power adjustment type is emergency call; otherwise, it is determined to be auxiliary frequency regulation.

[0145] In some possible implementations, module 302 is specifically used for: If the active power adjustment type is emergency dispatch, then the energy-type energy storage system will be identified as the priority response subject, and the power-type energy storage system will be identified as the auxiliary response subject; If the active power adjustment type is auxiliary frequency regulation, then the power-type energy storage system will be identified as the priority response subject, and the energy-type energy storage system will be identified as the auxiliary response subject.

[0146] In some possible implementations, module 302 is specifically used for: Determine whether the unit cycle power change limit of the priority response subject at the current moment meets the power change requirement, and determine whether the charge state of the priority response subject at the current moment is within the preset safe range; Based on the judgment result, the first power component of the priority response subject at the next moment is determined, and the difference between the power change and the first power component is taken as the second power component of the auxiliary response subject at the next moment, provided that the unit cycle power change limit and state of charge constraint of the auxiliary response subject are met. Intermediate allocation data is obtained based on the first power component and the second power component.

[0147] In some possible implementations, module 302 is specifically used for: If the active power adjustment type is emergency dispatch, then the expected time constant is determined to be the expected time constant corresponding to the emergency dispatch; If the active power adjustment type is auxiliary frequency regulation, then the expected time constant is determined to be the expected time constant corresponding to auxiliary frequency regulation.

[0148] In some possible implementations, module 302 is specifically used for: Based on the active power adjustment type, the desired time constant is determined; based on the desired time constant, the filter inductance value, and the filter impedance resistance value, the current loop proportional coefficient and the current loop integral coefficient are tuned. The current loop bandwidth is determined based on the current loop proportional coefficient and the current loop integral coefficient. Based on the current loop bandwidth, the voltage loop proportional coefficient and voltage loop integral coefficient are obtained by tuning using the equal bandwidth method. The controller parameter data are obtained by combining the current loop proportional coefficient, current loop integral coefficient, voltage loop proportional coefficient, and voltage loop integral coefficient.

[0149] In some possible implementations, the control module 303 is specifically used for: The active power command for the priority response subject at the next moment is generated based on the first power component in the intermediate allocation data, and the active power command for the auxiliary response subject at the next moment is generated based on the second power component. The active power command, current loop controller parameters, and voltage loop controller parameters of the priority response subject in the next moment will be sent to the energy storage converter corresponding to the priority response subject. The active power command, current loop controller parameters, and voltage loop controller parameters of the auxiliary response subject at the next moment will be sent to the energy storage converter corresponding to the auxiliary response subject.

[0150] The power control device for a grid-type energy storage system according to the embodiments of this application can correspond to the execution of the method described in the embodiments of this application, and the other operations and / or functions of each module / unit of the power control device for the grid-type energy storage system are respectively for implementing Figure 1 For the sake of brevity, the corresponding processes of each method in the illustrated embodiments will not be described in detail here.

[0151] This application also provides a computing device. For example... Figure 5 As shown in the figure, this is a schematic diagram of a computing device provided in an embodiment of this application. The computing device 400 includes a bus 401, a processor 402, a communication interface 403, and a memory 404. The processor 402, the memory 404, and the communication interface 403 communicate with each other via the bus 401.

[0152] Bus 401 can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0153] Processor 402 can be any one or more of the following processors: central processing unit (CPU), graphics processing unit (GPU), microprocessor (MP), or digital signal processor (DSP).

[0154] Communication interface 403 is used for communication with external devices.

[0155] Memory 404 may include volatile memory, such as random access memory (RAM). Memory 404 may also include non-volatile memory, such as read-only memory (ROM), flash memory, hard disk drive (HDD), or solid state drive (SSD).

[0156] The memory 404 stores executable code, and the processor 402 executes the executable code to perform the aforementioned power control method for the grid-type energy storage system.

[0157] Specifically, in achieving Figure 4 In the case of the illustrated embodiment, and Figure 4 When the modules or units of the power control device for the grid-type energy storage system described in the embodiment are implemented through software, the execution... Figure 4The software or program code required for the functions of each module / unit can be partially or entirely stored in the memory 404. The processor 402 executes the program code corresponding to each unit stored in the memory 404 to execute the aforementioned power control method for the grid-type energy storage system.

[0158] This application also provides a computer-readable storage medium. The computer-readable storage medium can be any available medium that a computing device can store, or a data storage device such as a data center containing one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive). The computer-readable storage medium includes instructions that instruct the computing device to execute the aforementioned power control method for a grid-type energy storage system.

[0159] This application also provides a computer program product comprising one or more computer instructions. When the computer instructions are loaded and executed on a computing device, all or part of the processes or functions described in this application are generated.

[0160] The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, or data center to another website, computer, or data center via wired (e.g., coaxial cable, fiber optic) or wireless (e.g., infrared, wireless, microwave, etc.) means.

[0161] When the computer program product is executed by a computer, the computer performs any of the aforementioned power control methods for grid-based energy storage systems. The computer program product can be a software installation package; when any of the aforementioned power control methods for grid-based energy storage systems needs to be used, the computer program product can be downloaded and executed on the computer.

[0162] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0163] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application.

Claims

1. A power control method for a grid-type energy storage system, characterized in that, The method includes: Acquire data on the composition type, operating status, and scenario parameters of hybrid energy storage sites; The power change is determined based on the target power and actual output value in the operating status data, and the active power adjustment type is determined based on the power change and the time information in the scenario parameter data. The priority response subject and the auxiliary response subject are determined based on the active power adjustment type and the composition type data; Based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, the power change at the current moment is allocated and calculated to obtain the intermediate allocation data for the next moment. The controller parameter data is determined according to the active power adjustment type; wherein, the controller parameter data includes current loop controller parameters obtained by tuning based on the expected time constant corresponding to different active power adjustment types, and voltage loop controller parameters obtained by tuning based on the current loop bandwidth. The active power command for each energy storage system is determined based on the intermediate allocation data, and the active power command and the controller parameter data are sent to the corresponding energy storage converter so that the energy storage converter can perform power output according to the active power command and the controller parameters to complete power control.

2. The method according to claim 1, characterized in that, The step of determining the power change based on the target power and actual output value in the operating status data, and determining the active power adjustment type based on the power change and time information in the scenario parameter data, includes: The difference between the target power and the actual output power is defined as the power change. If the power change is non-zero, then determine whether the current moment is within the emergency call period based on the time information; If the current time is within the emergency call period, the active power adjustment type is emergency call; otherwise, it is determined to be auxiliary frequency regulation.

3. The method according to claim 2, characterized in that, The composition type data is used to identify the type of energy storage system, which includes energy-type energy storage systems and power-type energy storage systems. The step of determining the priority response subject and auxiliary response subject based on the active power adjustment type and the composition type data includes: If the active power adjustment type is emergency dispatch, then the energy-type energy storage system will be identified as the priority response subject, and the power-type energy storage system will be identified as the auxiliary response subject; If the active power adjustment type is auxiliary frequency regulation, then the power-type energy storage system will be identified as the priority response subject, and the energy-type energy storage system will be identified as the auxiliary response subject.

4. The method according to claim 3, characterized in that, The allocation calculation of the power change at the current moment, based on the unit-cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit-cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, is performed to obtain the intermediate allocation data for the next moment, including: Determine whether the unit cycle power change limit of the priority response subject at the current moment meets the power change requirement, and determine whether the charge state of the priority response subject at the current moment is within the preset safe range; Based on the judgment result, the first power component of the priority response subject at the next moment is determined, and under the premise of satisfying the unit cycle power change limit and state of charge constraint of the auxiliary response subject, the difference between the power change and the first power component is taken as the second power component of the auxiliary response subject at the next moment. Intermediate allocation data is obtained based on the first power component and the second power component.

5. The method according to claim 1, characterized in that, The step of determining controller parameter data based on the active power adjustment type includes: Based on the active power adjustment type, determine the desired time constant; Based on the desired time constant, the filter inductance value, and the filter impedance resistance value, the current loop proportional coefficient and the current loop integral coefficient are tuned to obtain the current loop proportional coefficient and the current loop integral coefficient. The current loop bandwidth is determined based on the current loop proportional coefficient and the current loop integral coefficient. Based on the current loop bandwidth, the voltage loop proportional coefficient and voltage loop integral coefficient are obtained by tuning using the equal bandwidth method. The controller parameter data are obtained by combining the current loop proportional coefficient, current loop integral coefficient, voltage loop proportional coefficient, and voltage loop integral coefficient.

6. The method according to claim 5, characterized in that, Determining the desired time constant based on the active power adjustment type includes: If the active power adjustment type is emergency dispatch, then the expected time constant is determined to be the expected time constant corresponding to the emergency dispatch; If the active power adjustment type is auxiliary frequency regulation, then the expected time constant is determined to be the expected time constant corresponding to auxiliary frequency regulation.

7. The method according to claim 4, characterized in that, The step of determining the active power command for each energy storage system based on the intermediate allocation data, and sending the active power command and the controller parameter data to the corresponding energy storage converter includes: The active power command for the priority response subject at the next moment is generated based on the first power component in the intermediate allocation data, and the active power command for the auxiliary response subject at the next moment is generated based on the second power component. The active power command, current loop controller parameters, and voltage loop controller parameters of the priority response subject at the next moment will be sent to the energy storage converter corresponding to the priority response subject. The active power command, current loop controller parameters, and voltage loop controller parameters of the auxiliary response subject at the next moment will be sent to the energy storage converter corresponding to the auxiliary response subject.

8. A power control device for a grid-type energy storage system, characterized in that, The device includes: The acquisition module is used to acquire data on the composition type, operating status, and scenario parameters of the hybrid energy storage site. The determination module is used to determine the power change based on the target power and actual output value in the operating status data, and to determine the active power adjustment type based on the power change and time information in the scenario parameter data; to determine the priority response subject and the auxiliary response subject based on the active power adjustment type and the component type data; to perform allocation calculation on the power change at the current moment based on the unit cycle power change limit and state of charge constraint of the priority response subject at the current moment, and the unit cycle power change limit and state of charge constraint of the auxiliary response subject at the current moment, to obtain the intermediate allocation data for the next moment; and to determine the controller parameter data based on the active power adjustment type; wherein, the controller parameter data includes current loop controller parameters obtained based on the expected time constant tuning corresponding to different active power adjustment types, and voltage loop controller parameters obtained based on current loop bandwidth tuning; The control module is used to determine the active power command of each energy storage system based on the intermediate allocation data, and send the active power command and the controller parameter data to the corresponding energy storage converter, so that the energy storage converter performs power output according to the active power command and the controller parameters, thereby completing power control.

9. A computing device, characterized in that, Including memory and processor; The memory stores one or more computer programs, the one or more computer programs including instructions; when the instructions are executed by the processor, the computing device performs the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program for performing the method as described in any one of claims 1 to 7.

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