A control method and system for parallel energy storage power supply

Abstract

The present invention relates to the field of power control technology, and specifically discloses a control method and system for parallel energy storage power supplies, wherein the method comprises the following steps: S1: calculating the maximum output power of an energy storage unit according to an aging degree score, calculating the target output power and obtaining a first ranking; determining the first target ranking position, and determining the energy storage unit and output power that supply energy to the load according to the first target ranking position; S2: determining the second target ranking position according to the predicted required power; obtaining the second ranking according to the first ranking position interval, and determining the third target ranking position according to the second power difference; S3: determining an ascending unit and a descending unit, and adjusting the output power of the ascending unit and the descending unit. The present invention can improve the rationality of the output power distribution of the energy storage unit and avoid insufficient power supply capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of power control, and in particular to a control method and system for parallel energy storage power supplies. Background Art

[0002] A parallel energy storage power supply is a system that connects multiple energy storage units (such as batteries, supercapacitors, etc.) in parallel to achieve greater capacity and more efficient energy storage and release. In parallel energy storage, each energy storage unit can be charged and discharged independently, but their output voltage and current will be aggregated together to form a unified output interface.

[0003] By precisely controlling the output power of each energy storage unit, the energy distribution of the entire system can be optimized, energy waste can be reduced, and overall efficiency can be improved. For example, when demand is low, the output power of some energy storage units can be reduced to save energy; when demand is peak, the output power of the energy storage unit can be increased to meet demand. However, as the energy storage unit is used for a longer period of time, its maximum output power will continue to decrease, and the total output power of the parallel output power supply may not be able to meet the load demand. Therefore, in the process of adjusting the output power of the energy storage unit, how to optimize the output power of each energy storage unit has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a control method and system for parallel energy storage power supplies to solve the following technical problems: As the energy storage unit is used for a longer period of time, its maximum output power will continue to decrease, and the total output power of the parallel output power supplies may not be able to meet the load demand. Therefore, in the process of adjusting the output power of the energy storage unit, how to optimize the output power of each energy storage unit has become an urgent problem to be solved.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A control method for parallel energy storage power supplies, comprising the following steps: S1: Obtain the aging score k of a single energy storage unit and calculate the maximum output power of the energy storage unit , pys represents the rated output power of the energy storage unit, calculates the target output power P=0.9p, and sorts the target output power in ascending order to obtain a first sort; Determine a first target sorting position X1 in the first sorting, and the first target sorting position X1 satisfies the constraint: and , FSJ represents the current time The actual power demand of the load, represents the sum of the output powers of the first X1 targets, It represents the sum of the output powers of the first X1-1 targets; The energy storage units corresponding to the first X1-1 target output powers in the first ranking supply energy at their respective corresponding target output powers, and the energy storage unit corresponding to the X1th target output power in the first ranking supplies energy at the first power difference. Providing energy for output power; S2: will be with the current time The next adjacent time node Substitute the preset fitting curve f(t) to obtain the predicted demand power FYC, t represents time, calculate the power to be adjusted PAF=FYC-FSJ, and determine the second target sorting position X2 in the first sorting. The second target sorting position X2 satisfies the constraint: and ; The target output powers whose sorting positions in the first sorting are within the first sorting position interval [1, X2] are sorted in descending order to obtain a second sorting, and the second power difference is calculated. , based on the power difference, a third target sorting position X3 in the second sorting is determined, and the third target sorting position X3 satisfies the constraint: and ; S3: Determine an ascending unit and a descending unit based on the second target sorting position X2 and the third target sorting position X3 respectively, and adjust the output power of the ascending unit and the descending unit.

[0006] As a further solution of the present invention: in the step S3, the process of adjusting the output power of the increasing unit and the decreasing unit specifically includes: The energy storage unit corresponding to the target output power in the first sorting position that belongs to the second sorting position interval [X1, X2] is used as the rising unit, and the average rising speed is calculated. , the single ascending unit rises at a first ascending speed Increase the output power until the output power of a certain rising unit reaches the corresponding target output power, and the single rising unit increases at the second rising speed. Increase output power, The total number of rising units whose output power does not reach the corresponding target output power, repeating the above steps until the total output power of the rising units reaches the power to be adjusted PAF; The energy storage units corresponding to the first X3 target output powers in the second ranking are used as descending units, and each descending unit descends at a first descending speed. The output power is reduced until the output power of a certain decreasing unit is 0, and the single decreasing unit is reduced at the second decreasing speed. Reduce output power, The total number of decreasing units whose output power is not 0 is represented, and the above steps are repeated until the total decreasing output power of the decreasing units reaches the power to be adjusted PAF.

[0007] As a further solution of the present invention: when the power to be adjusted PAF is less than 0, the following steps are performed: Determine a fourth target sorting position X4 in the second sorting, and the fourth target sorting position satisfies the constraint: and , taking the energy storage unit corresponding to the target output power whose sorting position in the second sorting belongs to the third sorting position interval [1, X4] as the second descending unit; The second descending unit is arranged at a target descending speed. The output power is reduced until the output power of a second reduction unit is 0, and the single reduction unit is reduced at the first target reduction speed. Reduce output power, The total number of second decreasing units whose output power is not 0 is represented, and the above steps are repeated until the total decreased output power of the second decreasing units reaches the absolute value of the power to be adjusted.

[0008] As a further solution of the present invention: in the step S2, when the power to be adjusted is equal to 0 and / or the second power difference is equal to 0, the subsequent steps of adjusting the output power of the increasing unit and the decreasing unit are not performed.

[0009] As a further solution of the present invention: in the step S2, the process of determining the fitting curve specifically includes: Set m monitoring cycles, where m is a preset number, and within the monitoring cycle, at preset time intervals Set several time nodes, obtain the required power of the load at the time nodes, calculate the average required power of the load at the same time nodes, and generate coordinate points (a, F a ), F a represents the average required power corresponding to the time node a, and the coordinate points are fitted to obtain the fitting curve f(t).

[0010] As a further solution of the present invention: in the process of calculating the average required power of the load at the same time node, the average required power of the load at time node b is obtained , when the required power of the load on node b during the Bth acquisition cycle When the power demand of the load on time node b in the Bth acquisition cycle is removed, , and calculate the average required power of the load at time node b again, Indicates the preset difference threshold.

[0011] As a further solution of the present invention: in step S1, the process of determining the aging degree score specifically includes: The aging degree parameters of a single energy storage unit are collected, wherein the aging degree parameters include capacity attenuation, internal resistance and charge and discharge efficiency, and the aging degree score of the energy storage unit is calculated based on the superior and inferior solution distance method.

[0012] A control system for parallel energy storage power supplies, comprising: The first energy supply module: obtains the aging degree score k of a single energy storage unit and calculates the maximum output power of the energy storage unit , pys represents the rated output power of the energy storage unit, calculates the target output power P=0.9p, and sorts the target output power in ascending order to obtain a first sort; Determine a first target sorting position X1 in the first sorting, and the first target sorting position X1 satisfies the constraint: and , FSJ represents the current time The actual power demand of the load, represents the sum of the output powers of the first X1 targets, It represents the sum of the output powers of the first X1-1 targets; The energy storage units corresponding to the first X1-1 target output powers in the first ranking supply energy at their respective corresponding target output powers, and the energy storage unit corresponding to the X1th target output power in the first ranking supplies energy at the first power difference. Providing energy for output power; Analysis module: will be with the current time The next adjacent time node Substitute the preset fitting curve f(t) to obtain the predicted demand power FYC, t represents time, calculate the power to be adjusted PAF=FYC-FSJ, and determine the second target sorting position X2 in the first sorting. The second target sorting position X2 satisfies the constraint: and ; The target output powers whose sorting positions in the first sorting are within the first sorting position interval [1, X2] are sorted in descending order to obtain a second sorting, and the second power difference is calculated. , based on the power difference, a third target sorting position X3 in the second sorting is determined, and the third target sorting position X3 satisfies the constraint: and ; The second energy supply module determines the ascending unit and the descending unit based on the second target sorting position X2 and the third target sorting position X3, respectively, and adjusts the output power of the ascending unit and the descending unit.

[0013] Beneficial effects of the present invention: In this solution, firstly, the maximum available output power p of the energy storage unit is calculated according to the aging degree and rated power of the energy storage unit, and the target output power P is determined. By considering the aging score k, the maximum output power of the energy storage unit is factored to ensure that each unit outputs power within its safety and capacity range, thereby extending the unit life and improving the overall reliability of the system. Then, the target output powers of all energy storage units are sorted in ascending order to find the minimum number of units X1 that meets the actual power demand FSJ at the current moment, which can minimize waste and redundant output in supply and demand matching; then, according to the next moment, The load power prediction FYC is used to deploy the adjustment plan (PAF) in advance at the current moment by using the predicted power FYC, so that the system can plan ahead for the upcoming power changes, so that the output adjustment can be achieved more quickly and smoothly at the next moment; the power to be adjusted PAF=FYC-FSJ is calculated, and on the premise of meeting the incremental demand of PAF, the second target sorting position X2 is found in the first sorting, and the current power is first met through X1, and then the supply capacity is expanded through X2, laying the foundation for the flexible scheduling of subsequent power increase and decrease, and the first X2 target output power units are sorted twice (in descending order) to find the unit with the most potential or the easiest to deploy when increasing / decreasing power, so as to make the regulation more refined; the target output power of the interval [1, X2] is rearranged in descending order, and finally according to the power difference Identify the units that need to reduce power partially with X3, sort and adjust the power units precisely by subdividing them , which can avoid the drastic output fluctuation caused by sudden demand changes at the next moment and ensure the smooth operation of the system; finally, the power change rate control is applied to the rising unit and the falling unit in stages, and the output power of the rising unit is gradually increased and the output power of the falling unit is gradually reduced, so that the final power adjustment can smoothly transition to the required predicted power level; by setting the average rising speed and the rising and falling speed strategies of multiple stages, the fine-grained control of the output power is achieved. First, the power is allocated at a single balanced rising speed, and then the rising speed is dynamically adjusted according to the number of units that have not reached the target power. When a unit reaches the target power or a falling unit drops to 0, the speed is redistributed to ensure that the overall adjustment process is smooth and orderly. This gradual increase and decrease of power reduces the transient stress on the energy storage unit, reduces the component wear, heat and efficiency loss caused by instantaneous and drastic power changes, and helps to extend the life of the energy storage unit and improve energy utilization efficiency. The present invention continuously performs dynamic power optimization and balancing based on aging conditions and load forecasts. This solution provides a practical idea for how to use the remaining capacity of existing energy storage units (even if they are aged) to meet demand in actual projects, which helps to improve the rationality and effectiveness of overall power distribution in the context of aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a flow chart of a control method for parallel energy storage power supplies of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1 As shown, the present invention is a control method for parallel energy storage power supplies, comprising the following steps: S1: Obtain the aging score k of a single energy storage unit and calculate the maximum output power of the energy storage unit , pys represents the rated output power of the energy storage unit, calculates the target output power P=0.9p, and sorts the target output power in ascending order to obtain a first sort; In a preferred embodiment of the present invention, the process of determining the aging degree score specifically includes: Collecting aging parameters of a single energy storage unit, wherein the aging parameters include capacity attenuation, internal resistance, and charge and discharge efficiency, and calculating the aging score of the energy storage unit based on the superior and inferior solution distance method; Among them, capacity decay represents the ratio of current capacity to rated capacity, and charge and discharge efficiency represents the ratio of discharge capacity to charge capacity. The good and bad solution distance method is a commonly used multi-index decision analysis method. This method converts multi-dimensional and multi-attribute decision problems into comprehensive evaluation problems that are easy to compare by simultaneously considering the distances between each solution and the ideal optimal solution (positive ideal solution) and the worst solution (negative ideal solution). Since the good and bad solution distance method is relatively mature in application, it will not be described in detail here. Determine a first target sorting position X1 in the first sorting, and the first target sorting position X1 satisfies the constraint: and , FSJ represents the current time The actual power demand of the load, represents the sum of the output powers of the first X1 targets, It represents the sum of the output powers of the first X1-1 targets; The energy storage units corresponding to the first X1-1 target output powers in the first ranking supply energy at their respective corresponding target output powers, and the energy storage unit corresponding to the X1th target output power in the first ranking supplies energy at the first power difference. Providing energy for output power; It is worth noting that by sorting the target output powers of all energy storage units in ascending order, the minimum number of units X1 that meets the actual power demand FSJ at the current moment can be found, which can minimize waste and redundant output in supply and demand matching.

[0018] S2: will be with the current time The next adjacent time node Substitute the preset fitting curve f(t) to obtain the predicted demand power FYC, t represents time, calculate the power to be adjusted PAF=FYC-FSJ, and determine the second target sorting position X2 in the first sorting. The second target sorting position X2 satisfies the constraint: and ; In a preferred embodiment of the present invention, the process of determining the fitting curve specifically includes: Set m monitoring cycles, where m is a preset number, and within the monitoring cycle, at preset time intervals Set several time nodes, obtain the required power of the load at the time nodes, calculate the average required power of the load at the same time nodes, and generate coordinate points (a, F a ), F a represents the average required power corresponding to the time node a, and the coordinate points are fitted to obtain a fitting curve f(t); In a preferred embodiment of this invention, in the process of calculating the average power demand of the load at the same time node, the average power demand of the load at time node b is obtained. , when the required power of the load on node b during the Bth acquisition cycle When the power demand of the load on time node b in the Bth acquisition cycle is removed, , and calculate the average required power of the load at time node b again, Indicates the preset difference threshold; When calculating the average power demand at the same time node, if the load power demand in a certain collection period deviates too much from the average value (exceeds the preset threshold), ), indicating that the data point may be an atypical value caused by special events, failures, sudden anomalies, etc. By removing these abnormal data points and recalculating the average value, the impact of noise and outliers on the average result can be effectively reduced, making the final fitting curve smoother, more accurate and representative.

[0019] In a preferred embodiment of the present invention, when the power to be adjusted PAF is less than 0, the following steps are performed: Determine a fourth target sorting position X4 in the second sorting, and the fourth target sorting position satisfies the constraint: and , taking the energy storage unit corresponding to the target output power whose sorting position in the second sorting belongs to the third sorting position interval [1, X4] as the second descending unit; The second descending unit is arranged at a target descending speed. The output power is reduced until the output power of a second reduction unit is 0, and the single reduction unit is reduced at the first target reduction speed. Reduce output power, The total number of second decreasing units whose output power is not 0 is represented, and the above steps are repeated until the total decreasing output power of the second decreasing units reaches the absolute value of the power to be adjusted; When the power to be adjusted PAF is less than 0, it means that the load demand at the subsequent moment will decrease, and the output power of the energy storage unit needs to be reduced accordingly. By determining the fourth target sorting position X4 and selecting the energy storage unit in the corresponding interval as the "second reduction unit", a group of units that can reduce power can be accurately found so that their total power can be reduced just to the level that meets the demand change (|PAF|); When the power of a unit has dropped to 0, the reduction speed is recalculated and allocated to the units with remaining power reduction space, ensuring that each unit is in a relatively balanced power reduction state during the reduction process. This can ensure the flexibility of regulation and control and avoid excessive wear or impact load on individual units. The target output powers whose sorting positions in the first sorting are within the first sorting position interval [1, X2] are sorted in descending order to obtain a second sorting, and the second power difference is calculated. , based on the power difference, a third target sorting position X3 in the second sorting is determined, and the third target sorting position X3 satisfies the constraint: and ; In another preferred embodiment of the present invention, when the power to be adjusted is equal to 0 and / or the second power difference is equal to 0, the subsequent step of adjusting the output power of the increasing unit and the decreasing unit is not performed; It can be understood that when the power to be adjusted is equal to 0 and / or the second power difference is equal to 0, it means that the current power allocation has reached the expected target and there is no need to further fine-tune the output power; S3: determining an ascending unit and a descending unit based on the second target sorting position X2 and the third target sorting position X3, respectively, and adjusting the output power of the ascending unit and the descending unit; In a preferred embodiment of the present invention, the process of adjusting the output power of the increasing unit and the decreasing unit specifically includes: The energy storage unit corresponding to the target output power in the first sorting position that belongs to the second sorting position interval [X1, X2] is used as the rising unit, and the average rising speed is calculated. , the single ascending unit rises at a first ascending speed Increase the output power until the output power of a certain rising unit reaches the corresponding target output power, and the single rising unit increases at the second rising speed. Increase output power, The total number of rising units whose output power does not reach the corresponding target output power, repeating the above steps until the total output power of the rising units reaches the power to be adjusted PAF; The energy storage units corresponding to the first X3 target output powers in the second ranking are used as descending units, and each descending unit descends at a first descending speed. The output power is reduced until the output power of a certain decreasing unit is 0, and the single decreasing unit is reduced at the second decreasing speed. Reduce output power, Indicates the total number of decreasing units whose output power is not 0, repeating the above steps until the total decreasing output power of the decreasing units reaches the power to be adjusted PAF; By setting the average rising speed and the rising and falling speed strategies for multiple stages, fine-grained control of the output power is achieved. The power is first allocated at a single balanced rising speed, and then the rising speed is dynamically adjusted according to the number of units that have not reached the target power. When a unit reaches the target power or a declining unit drops to 0, the speed is redistributed to ensure that the overall adjustment process is smooth and orderly. This gradual increase and decrease in power reduces the transient stress on the energy storage unit, reduces component wear, heat and efficiency loss caused by instantaneous and drastic power changes, and helps to extend the life of the energy storage unit and improve energy utilization efficiency.

[0020] A control system for parallel energy storage power supplies, comprising: The first energy supply module: obtains the aging degree score k of a single energy storage unit and calculates the maximum output power of the energy storage unit , pys represents the rated output power of the energy storage unit, calculates the target output power P=0.9p, and sorts the target output power in ascending order to obtain a first sort; Determine a first target sorting position X1 in the first sorting, and the first target sorting position X1 satisfies the constraint: and , FSJ represents the current time The actual power demand of the load, represents the sum of the output powers of the first X1 targets, It represents the sum of the output powers of the first X1-1 targets; The energy storage units corresponding to the first X1-1 target output powers in the first ranking supply energy at their respective corresponding target output powers, and the energy storage unit corresponding to the X1th target output power in the first ranking supplies energy at the first power difference. Providing energy for output power; Analysis module: will be with the current time The next adjacent time node Substitute the preset fitting curve f(t) to obtain the predicted demand power FYC, t represents time, calculate the power to be adjusted PAF=FYC-FSJ, and determine the second target sorting position X2 in the first sorting. The second target sorting position X2 satisfies the constraint: and ; The target output powers whose sorting positions in the first sorting are within the first sorting position interval [1, X2] are sorted in descending order to obtain a second sorting, and the second power difference is calculated. , based on the power difference, a third target sorting position X3 in the second sorting is determined, and the third target sorting position X3 satisfies the constraint: and ; The second energy supply module determines the ascending unit and the descending unit based on the second target sorting position X2 and the third target sorting position X3, respectively, and adjusts the output power of the ascending unit and the descending unit.

[0021] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A control method for parallel energy storage power supply, characterized in that: The following steps are involved: S1: Obtain the aging score k of a single energy storage unit and calculate the maximum output power of the energy storage unit , pys represents the rated output power of the energy storage unit, calculates the target output power P=0.9p, and sorts the target output power in ascending order to obtain a first sort; Determine a first target sorting position X1 in the first sorting, and the first target sorting position X1 satisfies the constraint: , FSJ represents the current time The actual power demand of the load, represents the sum of the output powers of the first X1 targets, It represents the sum of the output powers of the first X1-1 targets; The energy storage units corresponding to the first X1-1 target output powers in the first ranking supply energy at their respective corresponding target output powers, and the energy storage unit corresponding to the X1th target output power in the first ranking supplies energy at the first power difference. Providing energy for output power; S2: will be with the current time The next adjacent time node Substitute the preset fitting curve f(t) to obtain the predicted demand power FYC, t represents time, calculate the power to be adjusted PAF=FYC-FSJ, and determine the second target sorting position X2 in the first sorting. The second target sorting position X2 satisfies the constraint: ; The target output powers whose sorting positions in the first sorting are within the first sorting position interval [1, X2] are sorted in descending order to obtain a second sorting, and the second power difference is calculated. , based on the power difference, a third target sorting position X3 in the second sorting is determined, and the third target sorting position X3 satisfies the constraint: ; S3: Determine an ascending unit and a descending unit based on the second target sorting position X2 and the third target sorting position X3 respectively, and adjust the output power of the ascending unit and the descending unit.

2. A control method for parallel energy storage power supply according to claim 1, characterized in that: In the step S3, the process of adjusting the output power of the increasing unit and the decreasing unit specifically includes: The energy storage unit corresponding to the target output power in the first sorting position that belongs to the second sorting position interval [X1, X2] is used as the rising unit, and the average rising speed is calculated. , the single ascending unit rises at a first ascending speed Increase the output power until the output power of a certain rising unit reaches the corresponding target output power, and the single rising unit increases at the second rising speed. Increase output power, The total number of rising units whose output power does not reach the corresponding target output power, repeating the above steps until the total output power of the rising units reaches the power to be adjusted PAF; The energy storage units corresponding to the first X3 target output powers in the second ranking are used as descending units, and each descending unit descends at a first descending speed. The output power is reduced until the output power of a certain decreasing unit is 0, and the single decreasing unit is reduced at the second decreasing speed. Reduce output power, The total number of decreasing units whose output power is not 0 is represented, and the above steps are repeated until the total decreasing output power of the decreasing units reaches the power to be adjusted PAF.

3. A control method for parallel energy storage power supply according to claim 1, characterized in that: In the step S2, when the power to be adjusted PAF is less than 0, the following steps are performed: Determine a fourth target sorting position X4 in the second sorting, and the fourth target sorting position satisfies the constraint: , taking the energy storage unit corresponding to the target output power whose sorting position in the second sorting belongs to the third sorting position interval [1, X4] as the second descending unit; The second descending unit is arranged at a target descending speed. The output power is reduced until the output power of a second reduction unit is 0, and the single reduction unit is reduced at the first target reduction speed. Reduce output power, The total number of second decreasing units whose output power is not 0 is represented, and the above steps are repeated until the total decreased output power of the second decreasing units reaches the absolute value of the power to be adjusted.

4. A control method for parallel energy storage power supply according to claim 1, characterized in that: In the step S2, when the power to be adjusted is equal to 0 and / or the second power difference is equal to 0, the subsequent steps of adjusting the output power of the increasing unit and the decreasing unit are not performed.

5. A control method for parallel energy storage power sources according to claim 1, characterized in that: In step S2, the process of determining the fitting curve specifically includes: Set m monitoring cycles, where m is a preset number, and within the monitoring cycle, at preset time intervals Set several time nodes, obtain the required power of the load at the time nodes, calculate the average required power of the load at the same time nodes, and generate coordinate points (a, F a ), F a represents the average required power corresponding to the time node a, and the coordinate points are fitted to obtain the fitting curve f(t).

6. A control method for parallel energy storage power sources according to claim 5, characterized in that: In the process of calculating the average required power of the load at the same time node, the average required power Y of the load at time node b is obtained b , when the required power of the load on node b during the Bth acquisition cycle When the power demand of the load on time node b in the Bth acquisition cycle is removed, , and calculate the average required power of the load at time node b again, Indicates the preset difference threshold.

7. A control method for parallel energy storage power sources according to claim 1, characterized in that: In the step S1, the process of determining the aging degree score specifically includes: The aging degree parameters of a single energy storage unit are collected, wherein the aging degree parameters include capacity attenuation, internal resistance and charge and discharge efficiency, and the aging degree score of the energy storage unit is calculated based on the superior and inferior solution distance method.

8. A control system for parallel energy storage power sources, characterized in that: include: The first energy supply module: obtains the aging degree score k of a single energy storage unit and calculates the maximum output power of the energy storage unit , pys represents the rated output power of the energy storage unit, calculates the target output power P=0.9p, and sorts the target output power in ascending order to obtain a first sort; Determine a first target sorting position X1 in the first sorting, and the first target sorting position X1 satisfies the constraint: and , FSJ represents the current time The actual power demand of the load, represents the sum of the output powers of the first X1 targets, It represents the sum of the output powers of the first X1-1 targets; The energy storage units corresponding to the first X1-1 target output powers in the first ranking supply energy at their respective corresponding target output powers, and the energy storage unit corresponding to the X1th target output power in the first ranking supplies energy at the first power difference. Providing energy for output power; Analysis module: will be with the current time The next adjacent time node Substitute the preset fitting curve f(t) to obtain the predicted demand power FYC, t represents time, calculate the power to be adjusted PAF=FYC-FSJ, and determine the second target sorting position X2 in the first sorting. The second target sorting position X2 satisfies the constraint: and ; The target output powers whose sorting positions in the first sorting are within the first sorting position interval [1, X2] are sorted in descending order to obtain a second sorting, and the second power difference is calculated. , based on the power difference, a third target sorting position X3 in the second sorting is determined, and the third target sorting position X3 satisfies the constraint: and ; The second energy supply module determines the ascending unit and the descending unit based on the second target sorting position X2 and the third target sorting position X3, respectively, and adjusts the output power of the ascending unit and the descending unit.

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