A method and system for optimizing internal power distribution of a hybrid energy storage system

By screening and optimizing the energy storage devices in the hybrid energy storage system to ensure the consistency and reliability of their discharge curves, the problem of difficult energy storage adjustment in the prior art is solved, and more efficient and safe energy storage adjustment is achieved.

CN118739526BActive Publication Date: 2025-05-06STATE GRID HENAN ELECTRIC POWER COMPANY ANYANG POWER SUPPLY +1
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Patent Information

Application Number
CN202410923658.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-10
Publication Date
2025-05-06
Estimated Expiration
2044-07-10

AI Technical Summary

Technical Problem

When performing power distribution adjustment in existing hybrid energy storage systems, it is difficult to ensure the consistency of discharge curves of different types of energy storage devices, resulting in the difficulty of grid-connected power quality to meet the requirements.

Method used

By determining the energy storage adjustment range of different types of energy storage devices in response to energy storage adjustment requirements individually, and screening suitable energy storage devices based on abnormal changes in the discharge curve, ensuring that the discharge curve deviation and reliable energy storage adjustment range under different adjustment power are taken into consideration, thereby optimizing power distribution.

Benefits of technology

It effectively avoids the adjustment reliability problems caused by abnormal changes in the energy storage adjustment device, and ensures the power quality and safety of energy storage adjustment.

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Abstract

The present invention provides a method and system for optimizing the internal power distribution of a hybrid energy storage system, belonging to the technical field of energy storage devices, and specifically comprising: determining reliable energy storage adjustment intervals of different types of energy storage devices and the adjustment reliability of different reliable energy storage adjustment intervals through similarities of discharge curves under different energy storage capacities and abnormal variation data of the discharge curves, taking the reliable energy storage adjustment interval as a constraint condition, determining the adjustment power of different types of energy storage devices according to deviations of discharge curves of different types of energy storage devices at different times under different adjustment powers and the adjustment reliability in different reliable energy storage adjustment intervals, thereby ensuring the reliability of energy storage adjustment.
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Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage devices, and in particular relates to a method and system for optimizing internal power distribution of a hybrid energy storage system. Background Art

[0002] Due to the differences in the regulation requirements of energy storage systems, energy storage systems using a single energy storage device often cannot meet the requirements of both regulation capacity and regulation rate under certain conditions. Therefore, the construction of energy storage systems based on multiple forms of energy storage devices is extremely important. At the same time, how to achieve the optimal allocation of internal power of different forms of energy storage devices in hybrid energy storage systems has become a technical problem that needs to be solved urgently.

[0003] In order to solve the above technical problems, in the invention patent CN202410140894.8 "A method and system for frequency modulation of a power system of a supercapacitor coupled lithium battery", the supercapacitor is controlled to respond according to the high-frequency component and the lithium battery is controlled to respond according to the low-frequency component, thereby optimizing the power distribution result of the hybrid energy storage device. However, it is not difficult to find out through analysis that there are the following technical problems:

[0004] Since the individual capacity of lithium batteries is generally small, and the discharge curves of different lithium batteries often have a certain degree of deviation, and at the same time, the discharge curve of supercapacitors will deteriorate to a certain extent as the depth of discharge increases, therefore, when adjusting power distribution, if the consistency of the discharge curves between different types of energy storage devices is not considered, it may lead to the difficulty in meeting the requirements of grid-connected power quality.

[0005] In response to the above technical problems, the present invention provides a method and system for optimizing internal power distribution of a hybrid energy storage system. Summary of the invention

[0006] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0007] In order to solve the above technical problems, the present invention provides a method for optimizing internal power distribution of a hybrid energy storage system, which specifically includes:

[0008] S1 determines the energy storage regulation intervals of different types of energy storage devices when they respond to energy storage regulation requirements individually, and when there is a screening energy storage device that meets the energy storage regulation requirements according to the abnormal change data of the discharge curve in the energy storage regulation interval, proceeds to the next step;

[0009] S2 determines the remaining regulating capacity of the energy storage device when performing a single response regulation according to the energy storage regulation interval, and determines that the curve consistency of the hybrid energy storage system in the future response energy storage regulation does not meet the requirements according to the remaining regulating capacity and the remaining capacity of other types of energy storage devices and the corresponding time of energy storage demand, and enters the next step;

[0010] S3 determines the reliable energy storage adjustment intervals of different types of energy storage devices and the adjustment reliability of different reliable energy storage adjustment intervals through similar situations of discharge curves under different energy storage capacities and abnormal variation data of the discharge curves;

[0011] S4 uses the reliable energy storage regulation interval as a constraint condition, and determines the regulation power of different types of energy storage devices according to the deviation of the discharge curves of different types of energy storage devices at different times under different regulation powers and the regulation reliability in different reliable energy storage regulation intervals.

[0012] The beneficial effects of the present invention are:

[0013] 1. Screening energy storage devices that meet the energy storage regulation requirements based on the abnormal change data of the discharge curve in the energy storage regulation interval avoids the problem that the regulation reliability of the energy storage regulation device does not meet the requirements due to abnormal changes in the energy storage regulation device during regulation. By screening the selected energy storage devices that meet the energy storage regulation requirements, the technical problem of difficult control of the consistency of the discharge curve caused by the simultaneous use of multiple types of energy storage devices is also avoided.

[0014] 2. The regulating powers of different types of energy storage devices are determined according to the deviations of the discharge curves of different types of energy storage devices at different times under different regulating powers and the regulating reliability in different reliable energy storage regulating intervals. That is, the influence of the deviations of the discharge curves of different types of energy storage devices on the power quality of energy storage regulation under different regulating powers is taken into account. Meanwhile, by further considering the regulating reliability of the reliable energy storage regulating interval, the regulating reliability of the generated regulating power control scheme also meets the requirements, thereby ensuring the reliability and safety of energy storage regulation.

[0015] A further technical solution is that the energy storage adjustment interval is determined according to the remaining capacity of the energy storage device and the energy storage demand.

[0016] A further technical solution is that the abnormal change data includes the number of abnormal drops and the drop depths and durations of different abnormal drop numbers.

[0017] A further technical solution is that the method for determining the screening energy storage device is:

[0018] Determine the number of abnormal drops in the energy storage regulation interval by using the abnormal change data of the discharge curve in the energy storage regulation interval, and determine the suspected abnormal capacity node according to the capacity of the energy storage device corresponding to different abnormal drop times;

[0019] Determine the abnormal degree of different suspected abnormal capacity nodes based on the abnormal drop times of different suspected abnormal capacity nodes, the drop depths and durations of different abnormal drop times;

[0020] The adjustment abnormality value of the energy storage device is determined according to the abnormality degree of different suspected abnormal capacity nodes, and whether the energy storage device is a screening energy storage device is determined based on the adjustment abnormality value.

[0021] A further technical solution is to determine whether the energy storage device is a screening energy storage device based on the adjustment abnormal value, specifically including:

[0022] When the regulation abnormality value of the energy storage device meets the requirement, the energy storage device is determined to be a screening energy storage device.

[0023] A further technical solution is to use the regulation reliability to determine whether the initial energy storage regulation interval is a reliable regulation interval, specifically including:

[0024] When the regulation reliability of the initial energy storage regulation interval meets the requirement, the initial energy storage regulation interval is determined to be a reliable regulation interval.

[0025] A further technical solution is that the method for determining the regulating power of the energy storage device is:

[0026] Taking the reliable energy storage regulation range of different types of energy storage devices as constraints, and taking different types of energy storage devices at different regulation powers as variables, multiple alternative regulation schemes are generated;

[0027] Determine the comprehensive deviation of the curves of different alternative adjustment schemes based on the deviation of the discharge curves of different types of energy storage devices at different times in different alternative adjustment schemes;

[0028] Determining the comprehensive regulation reliability of different alternative regulation schemes through the regulation reliability of different types of energy storage devices in different reliable energy storage regulation intervals in different alternative regulation schemes;

[0029] The processing priority values ​​of different alternative adjustment schemes are determined by using the curve comprehensive deviations and comprehensive adjustment reliability of different alternative adjustment schemes, and the optimal adjustment scheme is determined based on the processing priority values. The adjustment power of different types of energy storage devices is determined through the optimal adjustment scheme.

[0030] In a second aspect, the present invention provides a computer system comprising: a memory and a processor connected in communication, and a computer program stored in the memory and capable of running on the processor, characterized in that: when the processor runs the computer program, it executes the above-mentioned method for optimizing internal power distribution of a hybrid energy storage system.

[0031] Other features and advantages will be described in the following description, and partly become apparent from the description, or understood by practicing the invention. The purpose and other advantages of the invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

[0034] Figure 1 It is a flow chart of a method for optimizing internal power distribution of a hybrid energy storage system;

[0035] Figure 2 is a flow chart of a method for screening a determination of an energy storage device;

[0036] Figure 3 It is a flow chart of a method for determining a reliable energy storage regulation interval. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0038] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0039] Example 1

[0040] To solve the above problems, according to one aspect of the present invention, Figure 1According to one aspect of the present invention, a method for optimizing internal power distribution of a hybrid energy storage system is provided, which specifically includes:

[0041] S1 determines the energy storage regulation intervals of different types of energy storage devices when they respond to energy storage regulation requirements individually, and when there is a screening energy storage device that meets the energy storage regulation requirements according to the abnormal change data of the discharge curve in the energy storage regulation interval, proceeds to the next step;

[0042] S2 determines the remaining regulating capacity of the energy storage device when performing a single response regulation according to the energy storage regulation interval, and determines that the curve consistency of the hybrid energy storage system in the future response energy storage regulation does not meet the requirements according to the remaining regulating capacity and the remaining capacity of other types of energy storage devices and the corresponding time of energy storage demand, and enters the next step;

[0043] S3 determines the reliable energy storage adjustment intervals of different types of energy storage devices and the adjustment reliability of different reliable energy storage adjustment intervals through similar situations of discharge curves under different energy storage capacities and abnormal variation data of the discharge curves;

[0044] S4 uses the reliable energy storage regulation interval as a constraint condition, and determines the regulation power of different types of energy storage devices according to the deviation of the discharge curves of different types of energy storage devices at different times under different regulation powers and the regulation reliability in different reliable energy storage regulation intervals.

[0045] Furthermore, the energy storage adjustment interval is determined according to the remaining capacity of the energy storage device and the energy storage demand.

[0046] It should be noted that the abnormal change data includes the number of abnormal drops and the drop depths and durations of different abnormal drop times.

[0047] Specifically, Figure 2 As shown, the method for determining the screening energy storage device is:

[0048] Determine the number of abnormal drops in the energy storage regulation interval by using the abnormal change data of the discharge curve in the energy storage regulation interval, and determine the suspected abnormal capacity node according to the capacity of the energy storage device corresponding to different abnormal drop times;

[0049] Determine the abnormal degree of different suspected abnormal capacity nodes based on the abnormal drop times of different suspected abnormal capacity nodes, the drop depths and durations of different abnormal drop times;

[0050] The adjustment abnormality value of the energy storage device is determined according to the abnormality degree of different suspected abnormal capacity nodes, and whether the energy storage device is a screening energy storage device is determined based on the adjustment abnormality value.

[0051] Further, determining whether the energy storage device is a screening energy storage device based on the adjustment abnormal value specifically includes:

[0052] When the regulation abnormality value of the energy storage device meets the requirement, the energy storage device is determined to be a screening energy storage device.

[0053] In another embodiment, the method for determining the screening energy storage device is:

[0054] Determine the number of abnormal drops of the energy storage device in the energy storage adjustment interval according to the abnormal change data of the discharge curve of the energy storage device in the energy storage adjustment interval, and judge whether the number of abnormal drops meets the requirement, if so, proceed to the next step, if not, determine that the energy storage device does not belong to the screening energy storage device;

[0055] Obtaining the number of times the energy storage device is adjusted in the energy storage adjustment interval, and determining whether the proportion of the number of times with abnormal change data meets the requirement, if so, proceeding to the next step, if not, determining that the energy storage device does not belong to the screened energy storage device;

[0056] The abnormal drop times in the energy storage regulation interval are determined by the abnormal change data of the discharge curve in the energy storage regulation interval, and the suspected abnormal capacity nodes are determined according to the capacity of the energy storage device corresponding to different abnormal drop times, and it is judged whether the number of the suspected abnormal capacity nodes meets the requirements, if so, proceed to the next step, if not, it is determined that the energy storage device does not belong to the screening energy storage device;

[0057] Determine the abnormal degree of different suspected abnormal capacity nodes based on the abnormal drop times, drop depths and durations of different abnormal drop times of different suspected abnormal capacity nodes, and judge whether there are suspected abnormal capacity nodes whose abnormal degree does not meet the requirements. If so, determine that the energy storage device does not belong to the screening energy storage device, if not, proceed to the next step;

[0058] The adjustment abnormality value of the energy storage device is determined according to the abnormality degree of different suspected abnormal capacity nodes, and whether the energy storage device is a screening energy storage device is determined based on the adjustment abnormality value.

[0059] It is also noted that when there is no selected energy storage device that meets the energy storage regulation requirements, the process directly proceeds to step S3 without determining whether the curve consistency of the hybrid energy storage system in future response to energy storage regulation meets the requirements.

[0060] Further, determining that the curve consistency of the hybrid energy storage system in future response to energy storage regulation does not meet the requirements specifically includes:

[0061] Determine the number of historical energy storage adjustments of the hybrid energy storage system in a preset time period in the future according to the corresponding moment of the energy storage demand, and determine the estimated probability of the hybrid energy storage system in different energy storage estimated adjustment intervals in combination with energy storage adjustment depths of different historical energy storage adjustment times;

[0062] Obtaining the remaining regulating capacity of the screening energy storage device and the remaining capacity of other types of energy storage devices of the hybrid energy storage system, and determining the evaluation results of the curve consistency of the screening energy storage device and other types of energy storage devices of the hybrid energy storage system in response to different energy storage speculation regulation intervals on the basis of controlling the regulating power of the screening energy storage device and other types of energy storage devices at a preset ratio, and determining the consistency evaluation results in response to different energy storage speculation regulation intervals in combination with the speculation probabilities of different energy storage speculation regulation intervals;

[0063] The curve consistency of the hybrid energy storage system in responding to energy storage regulation in the future is determined by the consistency evaluation results in response to different energy storage speculation intervals, and combined with the consistency threshold, it is determined whether the curve consistency of the hybrid energy storage system in responding to energy storage regulation in the future meets the requirements.

[0064] It can be understood that, in combination with the consistency threshold, determining whether the curve consistency of the hybrid energy storage system in future response to energy storage regulation meets the requirements specifically includes:

[0065] When the curve consistency of the hybrid energy storage system in the future response to energy storage regulation is less than the consistency threshold, it is determined that the curve consistency of the hybrid energy storage system in the future response to energy storage regulation does not meet the requirement.

[0066] In another embodiment, determining that the curve consistency of the hybrid energy storage system in future response to energy storage regulation does not meet the requirement specifically includes:

[0067] Determine the number of historical energy storage adjustments of the hybrid energy storage system in a preset time period in the future according to the corresponding moment of the energy storage demand, and determine the estimated probability of the hybrid energy storage system in different energy storage estimated adjustment intervals in combination with energy storage adjustment depths of different historical energy storage adjustment times;

[0068] Obtain the remaining regulating capacity of the screening energy storage device and the remaining capacity of other types of energy storage devices of the hybrid energy storage system, and determine the evaluation results of the curve consistency of the screening energy storage device and other types of energy storage devices of the hybrid energy storage system in response to different energy storage inference regulation intervals on the basis of controlling the regulating power of the screening energy storage device and other types of energy storage devices at a preset ratio, and judge whether there is an energy storage inference regulation interval in which the curve consistency evaluation result does not meet the requirements, if so, proceed to the next step, if not, determine that the curve consistency of the hybrid energy storage system in responding to energy storage regulation in the future meets the requirements;

[0069] The energy storage inference adjustment interval in which the curve consistency evaluation result does not meet the requirement is used as the deviation adjustment interval, and it is determined whether the sum of the inference probabilities of the deviation adjustment interval meets the requirement, if so, proceed to the next step, if not, it is determined that the curve consistency of the hybrid energy storage system in the future response to energy storage adjustment does not meet the requirement;

[0070] Determine the consistency evaluation results in response to different deviation adjustment intervals according to the evaluation results of the curve consistency of the deviation adjustment interval and the inferred probability of the deviation adjustment interval, and judge whether the number of deviation adjustment intervals whose consistency evaluation results do not meet the requirements meets the requirements, if so, proceed to the next step, if not, determine that the curve consistency of the hybrid energy storage system in future response to energy storage adjustment does not meet the requirements;

[0071] The curve consistency of the hybrid energy storage system in future response to energy storage regulation is determined by the consistency evaluation results in response to different deviation adjustment intervals, and whether the curve consistency of the hybrid energy storage system in future response to energy storage regulation meets the requirements is determined in combination with the consistency threshold.

[0072] Specifically, Figure 3 As shown, the method for determining the reliable energy storage adjustment interval is:

[0073] Determine the curve similarity of discharge curves of different types of energy storage devices at different energy storage capacities based on the similarity of discharge curves at different energy storage capacities, and divide the initial energy storage adjustment intervals of different types of energy storage devices using the curve similarity, and determine the similarity evaluation amount through the curve similarity of discharge curves at different energy storage capacities in different initial energy storage adjustment intervals;

[0074] Determine the number of abnormal drops of the discharge curve in the initial energy storage adjustment interval according to the abnormal changes of the discharge curve in different initial energy storage adjustment intervals, and determine the adjustment stability of the initial energy storage adjustment interval based on the number of abnormal drops;

[0075] The adjustment reliability of the initial energy storage adjustment interval is determined based on the similarity evaluation amount and the adjustment stability, and whether the initial energy storage adjustment interval is a reliable adjustment interval is determined using the adjustment reliability.

[0076] Further, using the regulation reliability to determine whether the initial energy storage regulation interval is a reliable regulation interval specifically includes:

[0077] When the regulation reliability of the initial energy storage regulation interval meets the requirement, the initial energy storage regulation interval is determined to be a reliable regulation interval.

[0078] Specifically, the method for determining the adjustment power of the energy storage device is:

[0079] Taking the reliable energy storage regulation range of different types of energy storage devices as constraints, and taking different types of energy storage devices at different regulation powers as variables, multiple alternative regulation schemes are generated;

[0080] Determine the comprehensive deviation of the curves of different alternative adjustment schemes based on the deviation of the discharge curves of different types of energy storage devices at different times in different alternative adjustment schemes;

[0081] Determining the comprehensive regulation reliability of different alternative regulation schemes through the regulation reliability of different types of energy storage devices in different reliable energy storage regulation intervals in different alternative regulation schemes;

[0082] The processing priority values ​​of different alternative adjustment schemes are determined by using the curve comprehensive deviations and comprehensive adjustment reliability of different alternative adjustment schemes, and the optimal adjustment scheme is determined based on the processing priority values. The adjustment power of different types of energy storage devices is determined through the optimal adjustment scheme.

[0083] In another embodiment, the method for determining the adjustment power of the energy storage device is:

[0084] Taking the reliable energy storage regulation range of different types of energy storage devices as constraints, and taking different types of energy storage devices at different regulation powers as variables, multiple alternative regulation schemes are generated;

[0085] Determine whether the number of moments when the discharge curve has deviations meets the requirement based on the deviations of the discharge curves of different types of energy storage devices at different times in different alternative adjustment schemes; if so, determine that the alternative adjustment scheme does not belong to the optimal adjustment scheme; if not, proceed to the next step;

[0086] The moment when the discharge curve has a deviation is taken as the discharge deviation moment, and the deviation of the screening curve is determined according to the deviation of the discharge curve of different types of energy storage devices at different discharge deviation moments, and it is judged whether the deviation of the screening curve meets the requirements. If not, it is determined that the alternative adjustment scheme does not belong to the optimal adjustment scheme. If so, proceed to the next step;

[0087] Determine the curve comprehensive deviation of different alternative adjustment schemes based on the deviation of the discharge curve of different types of energy storage devices at different times in different alternative adjustment schemes, and judge whether the curve comprehensive deviation of the alternative adjustment scheme meets the requirements. If not, determine that the alternative adjustment scheme does not belong to the optimal adjustment scheme. If yes, proceed to the next step.

[0088] Determining the comprehensive regulation reliability of different alternative regulation schemes through the regulation reliability of different types of energy storage devices in different reliable energy storage regulation intervals in different alternative regulation schemes;

[0089] The processing priority values ​​of different alternative adjustment schemes are determined by using the curve comprehensive deviations and comprehensive adjustment reliability of different alternative adjustment schemes, and the optimal adjustment scheme is determined based on the processing priority values. The adjustment power of different types of energy storage devices is determined through the optimal adjustment scheme.

[0090] Example 2

[0091] On the other hand, the present invention provides a computer system, comprising: a memory and a processor connected in communication, and a computer program stored in the memory and capable of running on the processor, characterized in that: when the processor runs the computer program, it executes the above-mentioned method for optimizing internal power distribution of a hybrid energy storage system.

[0092] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0093] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0094] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A method for optimizing internal power distribution of a hybrid energy storage system, characterized in that: Specifically include: Determine energy storage regulation intervals of different types of energy storage devices when they respond to energy storage regulation requirements individually, and proceed to the next step when there is a screening energy storage device that meets the energy storage regulation requirements based on abnormal change data of the discharge curve in the energy storage regulation interval; The remaining regulating capacity of the energy storage device when performing a single response regulation is screened according to the energy storage regulation interval, and when the curve consistency of the hybrid energy storage system in the future response energy storage regulation does not meet the requirements according to the remaining regulating capacity and the remaining capacity of other types of energy storage devices and the corresponding time of energy storage demand, the next step is entered; Determine the reliable energy storage adjustment intervals of different types of energy storage devices and the adjustment reliability of different reliable energy storage adjustment intervals through similar situations of discharge curves under different energy storage capacities and abnormal change data of discharge curves; Taking the reliable energy storage regulation interval as a constraint condition, the regulation power of different types of energy storage devices is determined according to the deviation of the discharge curves of different types of energy storage devices at different times under different regulation powers and the regulation reliability in different reliable energy storage regulation intervals.

2. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 1, characterized in that: The energy storage adjustment interval is determined according to the remaining capacity of the energy storage device and the energy storage demand.

3. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 1, characterized in that: The abnormal change data includes the number of abnormal drops and the drop depths and durations of different abnormal drop times.

4. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 1, characterized in that: The method for determining the screening energy storage device is: Determine the number of abnormal drops in the energy storage regulation interval by using the abnormal change data of the discharge curve in the energy storage regulation interval, and determine the suspected abnormal capacity node according to the capacity of the energy storage device corresponding to different abnormal drop times; Determine the abnormal degree of different suspected abnormal capacity nodes based on the abnormal drop times of different suspected abnormal capacity nodes, the drop depths and durations of different abnormal drop times; The adjustment abnormality value of the energy storage device is determined according to the abnormality degree of different suspected abnormal capacity nodes, and whether the energy storage device is a screening energy storage device is determined based on the adjustment abnormality value.

5. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 4, characterized in that: Determining whether the energy storage device is a screening energy storage device based on the adjustment abnormal value specifically includes: When the regulation abnormality value of the energy storage device meets the requirement, the energy storage device is determined to be a screening energy storage device.

6. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 1, characterized in that: Determining that the curve consistency of the hybrid energy storage system in future response to energy storage regulation does not meet the requirements specifically includes: Determine the historical energy storage adjustment times of the hybrid energy storage system in a future preset time period according to the corresponding time of the energy storage demand, and determine the estimated probability of the hybrid energy storage system in different energy storage estimated adjustment intervals according to the historical energy storage adjustment times in the future preset time period and the energy storage adjustment depths of different historical energy storage adjustment times; Obtaining the remaining regulating capacity of the screening energy storage device and the remaining capacity of other types of energy storage devices of the hybrid energy storage system, and determining the evaluation results of the curve consistency of the screening energy storage device and other types of energy storage devices of the hybrid energy storage system in response to different energy storage speculation regulation intervals on the basis of controlling the regulating power of the screening energy storage device and other types of energy storage devices at a preset ratio, and determining the consistency evaluation results in response to different energy storage speculation regulation intervals in combination with the speculation probabilities of different energy storage speculation regulation intervals; The curve consistency of the hybrid energy storage system in responding to energy storage regulation in the future is determined according to the consistency evaluation results in response to different energy storage speculation intervals, and whether the curve consistency of the hybrid energy storage system in responding to energy storage regulation in the future meets the requirements is determined in combination with the consistency threshold.

7. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 6, characterized in that: Determining whether the curve consistency of the hybrid energy storage system in future response to energy storage regulation meets the requirements in combination with the consistency threshold specifically includes: When the curve consistency of the hybrid energy storage system in the future response to energy storage regulation is less than the consistency threshold, it is determined that the curve consistency of the hybrid energy storage system in the future response to energy storage regulation does not meet the requirement.

8. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 1, characterized in that: The method for determining the reliable energy storage adjustment interval is: Determine the curve similarity of discharge curves of different types of energy storage devices at different energy storage capacities based on the similarity of discharge curves at different energy storage capacities, and divide the initial energy storage adjustment intervals of different types of energy storage devices using the curve similarity, and determine the similarity evaluation amount through the curve similarity of discharge curves at different energy storage capacities in different initial energy storage adjustment intervals; Determine the number of abnormal drops of the discharge curve in the initial energy storage adjustment interval according to the abnormal changes of the discharge curve in different initial energy storage adjustment intervals, and determine the adjustment stability of the initial energy storage adjustment interval based on the number of abnormal drops; The adjustment reliability of the initial energy storage adjustment interval is determined based on the similarity evaluation amount and the adjustment stability, and whether the initial energy storage adjustment interval is a reliable adjustment interval is determined using the adjustment reliability.

9. The method for optimizing internal power distribution of a hybrid energy storage system according to claim 8, characterized in that: Determining whether the initial energy storage regulation interval is a reliable regulation interval by using the regulation reliability specifically includes: When the regulation reliability of the initial energy storage regulation interval meets the requirement, the initial energy storage regulation interval is determined to be a reliable regulation interval.

10. A computer system comprising: A memory and a processor connected in communication, and a computer program stored in the memory and capable of running on the processor, characterized in that: when the processor runs the computer program, a method for optimizing internal power distribution of a hybrid energy storage system as described in any one of claims 1-9 is executed.

Citation Information

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