Electric energy quality detection analysis processing method and system of energy storage system, and storage medium

Abstract

The invention provides an electric energy quality detection analysis processing method and system for an energy storage system, and belongs to the technical field of energy storage devices, and the method specifically comprises the steps: determining the detection processing sequence of the electric energy quality of different core adjustment combinations according to the similar conditions of energy storage modules between different core adjustment combinations, determining a changing energy storage module and a switching deviation combination when the core adjustment combination is switched to the next core adjustment combination based on the detection processing sequence; and in combination with the changing energy storage modules of different switching deviation modules and the energy storage adjustment data of different energy storage adjustment combinations, the detection processing method of the electric energy quality when different switching deviation combinations are switched to the next core adjustment combination is determined, so that the accuracy of the detection result of the electric energy quality is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage devices, and in particular relates to a method, system and storage medium for detecting, analyzing and processing power quality of an energy storage system. Background Art

[0002] As the operating time of the energy storage system increases, the aging of the batteries in the energy storage system will inevitably lead to deviations in the power quality of the energy storage system, which will inevitably make it difficult for the energy storage system to meet the requirements for the reliability of the regulation processing when performing energy storage regulation.

[0003] To solve the above technical problems, existing technical solutions often regularly evaluate the power quality of the energy storage system, and then optimize and control the power quality based on the evaluation results. However, the above technical solutions have the following technical defects: Energy storage systems often experience changes in their operating conditions, and their power quality often varies significantly across different battery and output power ranges. Therefore, how to specifically detect and process the power quality of energy storage devices to ensure the accuracy of the detection and analysis results has become a pressing technical issue.

[0004] To solve the above technical problems, the present application provides a method, system and storage medium for detecting, analyzing and processing power quality of an energy storage system. Summary of the Invention

[0005] To achieve the purpose of the present invention, the present invention adopts the following technical solutions: Specifically, the present application provides a method for detecting and processing power quality of an energy storage system, which specifically includes: S1 determines the coordinated adjustment data between different energy storage modules based on the energy storage adjustment data of the energy storage system, and determines a reference energy storage module among the energy storage modules based on the coordinated adjustment data with other energy storage modules; S2 freely combines other energy storage modules with the reference energy storage module to obtain multiple energy storage module combinations, and determines a core adjustment combination based on the energy storage adjustment data of different energy storage adjustment combinations. When the composition data of the core adjustment combination does not meet the requirements, proceed to the next step; S3 determines a detection and processing sequence for power quality of different core regulation combinations based on similarities of energy storage modules between the different core regulation combinations, and determines, based on the detection and processing sequence, a changed energy storage module and a switching deviation combination when the core regulation combination switches to the next core regulation combination; S4 determines the detection and processing method of the power quality when different switching deviation combinations switch to the next core regulation combination according to the detection and processing order of different switching deviation combinations, combined with the changed energy storage modules of different switching deviation modules and the energy storage regulation data of different energy storage regulation combinations.

[0006] The beneficial effects of the present invention are: In the present application, it is determined whether the constituent data of the core regulation combination meets the requirements, thereby avoiding the need to perform power quality detection and processing in all energy storage regulation combinations, resulting in the need for multiple charge and discharge processes within a fixed charge and discharge capacity range. Otherwise, the technical problem of mismatch in the capacity of the energy storage device for the power quality detection and processing of the core regulation combination will arise, making it difficult for the accuracy of the power quality detection results to meet the requirements. Priority is given to ensuring the power quality detection and processing of the core regulation combination with a large number of energy storage adjustment times.

[0007] In the present application, based on the detection and processing order of different switching deviation combinations, the changed energy storage modules of different switching deviation modules, and the energy storage regulation data of different energy storage regulation combinations, the detection and processing method of the power quality when different switching deviation combinations are switched to the next core regulation combination is determined. This not only takes into account the need to set up energy storage modules for buffering processing when the switching deviation combination is switched to the next core regulation combination due to the difference in the number of energy storage modules that need to be changed and the difference in the number of energy storage adjustments, but also further combines the number of later switching deviation combinations, thereby avoiding the influence of the excessive number of energy storage modules set for buffering processing on the reliability of the detection and processing of the later switching deviation combinations.

[0008] A further technical solution is that the energy storage adjustment data includes the number of energy storage adjustments of the energy storage system in history and the energy storage modules used for different energy storage adjustment times.

[0009] It is understandable that the energy storage module is composed of multiple battery cells (battery monomers), and an independent battery module composed of multiple battery cells is used as an energy storage module.

[0010] A further technical solution is that the collaborative adjustment data is the number of energy storage adjustments performed by the energy storage module together with other energy storage modules.

[0011] A further technical solution is that the method for determining the reference energy storage module in the energy storage module is: Based on the coordinated adjustment data, determining a number of energy storage adjustments that the energy storage module and other energy storage modules in the energy storage system have used simultaneously in history, and using the number as the coordinated adjustment number; Whether the energy storage module is a reference energy storage module is determined according to the number of coordinated adjustments with other energy storage modules.

[0012] A further technical solution is that the method for determining the detection and processing method of the power quality when the switching deviation combination switches to the next core adjustment combination is: Determining the number of subsequent switching deviation combinations and the number of core adjustment combinations according to the detection and processing order of the switching deviation combination, and using the number of subsequent switching deviation combinations as the number of deviation combinations and the number of subsequent core adjustment combinations as the number of core combinations; Determining a buffer energy storage combination of the switching deviation combination according to the changed energy storage module when the switching deviation combination switches to the next core adjustment combination, and determining the matching adjustment times of the buffer energy storage combination; Based on the number of deviation combinations, the number of core combinations and the number of matching adjustments of the buffer energy storage combination, a detection and processing method for power quality when the switching deviation combination is switched to the next core adjustment combination is determined.

[0013] In a second aspect, the present invention provides a computer system comprising: a memory and a processor in communication connection, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the above-mentioned method for detecting, analyzing and processing power quality of an energy storage system when running the computer program.

[0014] In a third aspect, the present invention provides a computer storage medium having a computer program stored thereon. When the computer program is executed in a computer, the computer is caused to execute the above-mentioned method for detecting, analyzing and processing power quality of an energy storage system.

[0015] Other features and advantages will be described in the following description. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and drawings.

[0016] 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

[0017] 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 accompanying drawings.

[0018] Figure 1 It is a flow chart of a method for detecting, analyzing and processing power quality of an energy storage system; Figure 2 is a flow chart of a method for determining a reference energy storage module in an energy storage module; Figure 3is a flow chart of a method for determining a core regulatory combination; Figure 4 is a flow chart of a method for determining a detection and processing sequence of power quality of a core regulation combination; Figure 5 It is a framework diagram of a computer system. DETAILED DESCRIPTION

[0019] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this specification without creative work should fall within the scope of protection of this specification.

[0020] In the present application, the number of times that energy storage regulation processing has been simultaneously performed on combinations consisting of different energy storage modules in history is used to determine the detection and processing strategy for the power quality of combinations consisting of different energy storage modules. In order to avoid the need for repeated charging and discharging to achieve power quality detection, when there are a large number of core regulation combinations with a large number of energy storage regulation times, power quality detection is performed only in the core regulation combinations. Based on the change data of the energy storage modules between the core regulation combinations, it is determined whether a buffered energy storage regulation combination is set between the core regulation combinations, thereby avoiding the impact of excessive switching changes on the operating stability of the energy storage system.

[0021] It should be noted that the power quality detection of the present application utilizes harmonic detection equipment and voltage detection equipment to detect and handle power quality problems such as excessive harmonics and sudden voltage changes.

[0022] Example 1 like Figure 1 As shown, the present application provides a method for detecting and processing power quality of an energy storage system, which specifically includes: S1 determines the coordinated adjustment data between different energy storage modules based on the energy storage adjustment data of the energy storage system, and determines a reference energy storage module among the energy storage modules based on the coordinated adjustment data with other energy storage modules; Furthermore, the energy storage adjustment data includes the number of energy storage adjustments of the energy storage system in history and the energy storage modules used for different energy storage adjustment times.

[0023] It is understandable that the energy storage module is composed of multiple battery cells (battery monomers), and an independent battery module composed of multiple battery cells is used as an energy storage module.

[0024] Specifically, the coordinated adjustment data is the number of energy storage adjustments performed by the energy storage module together with other energy storage modules.

[0025] Specifically, such as Figure 2 As shown, the method for determining the reference energy storage module in the energy storage module is: Based on the coordinated adjustment data, determining a number of energy storage adjustments that the energy storage module and other energy storage modules in the energy storage system have used simultaneously in history, and using the number as the coordinated adjustment number; Whether the energy storage module is a reference energy storage module is determined according to the number of coordinated adjustments with other energy storage modules.

[0026] It is understandable that the energy storage module having the largest sum of cooperative adjustment times with other energy storage modules is used as the benchmark energy storage module.

[0027] Optionally, the method for determining the reference energy storage module in the energy storage module is: Based on the coordinated adjustment data, determining a number of energy storage adjustments that the energy storage module and other energy storage modules in the energy storage system have used simultaneously in history, and using the number as the coordinated adjustment number; According to the number of coordinated adjustments with other energy storage modules, determining other energy storage modules whose number of coordinated adjustments is greater than a preset threshold of coordinated adjustment number, and using them as associated energy storage modules; An associated energy storage module of the energy storage module is used to determine whether the energy storage module is a reference energy storage module.

[0028] It can be understood that the benchmark energy storage module is the energy storage module with the largest number of associated energy storage modules.

[0029] S2 freely combines other energy storage modules with the reference energy storage module to obtain multiple energy storage module combinations, and determines a core adjustment combination based on the energy storage adjustment data of different energy storage adjustment combinations. When the composition data of the core adjustment combination does not meet the requirements, proceed to the next step; Furthermore, multiple energy storage module combinations are obtained by free combination, specifically including: Other energy storage modules are freely combined with the reference energy storage module to obtain multiple energy storage module combinations.

[0030] In a possible embodiment, if the reference energy storage module is A, then for modules B and C, energy storage module combinations A, B; A, C; A, B, C can be obtained.

[0031] Specifically, such as Figure 3 As shown, the method for determining the core regulatory combination is: Using the energy storage adjustment data of different energy storage adjustment combinations, determine the number of times that the energy storage modules corresponding to the energy storage adjustment combinations have simultaneously performed energy storage adjustment in the past, and use this number as the matching adjustment number; According to the matching adjustment times, it is determined whether the energy storage adjustment combination is a core adjustment combination.

[0032] It can be understood that the energy storage regulation combination that meets the requirements for the number of matching adjustments, that is, the energy storage regulation combination with a larger number of matching adjustments, is used as the core regulation combination. Specifically, when the number of matching adjustments is greater than a preset number threshold, the energy storage regulation combination is determined to be the core regulation combination, wherein the preset number threshold is determined according to the number of energy storage adjustments of the energy storage system. The more energy storage adjustments, the more times the energy storage module is charged and discharged, and therefore the greater the probability of power quality problems. At this time, the smaller the preset number threshold, in a possible embodiment, the preset number threshold can be set to 20 times when the number of energy storage adjustments is between 0 and 500 times, and to 15 times when it is above 500 times.

[0033] It can be understood that when there is no core regulation combination, after the energy storage battery is charged, that is, after it is charged to the rated capacity, the detection and processing order of the power quality is determined according to the similar situations of different energy storage regulation combinations. Specifically, when the power quality detection and processing is performed, the detection and processing order is determined with the goal of minimizing the number of changes in the energy storage modules when switching from different energy storage regulation combinations to the next energy storage regulation combination.

[0034] Specifically, determining that the constituent data of the core adjustment combination does not meet the requirements specifically includes: Obtaining the number of the core adjustment combinations; Based on the number of the core adjustment combinations, it is determined whether the constituent data of the core adjustment combinations meet the requirements.

[0035] It should be noted that when the number of core regulation combinations is large, that is, greater than the threshold, the probability of abnormal power quality of the energy storage battery when the remaining capacity is small is greater. Therefore, on this basis, if the power quality of all energy storage regulation combinations is detected and processed, it is possible that the time when the remaining capacity of the energy storage battery is small is short, and the power quality of the core regulation combination cannot be effectively detected and processed. Therefore, on this basis, it is determined that the composition data of the core regulation combination does not meet the requirements.

[0036] It is understandable that the threshold is determined according to the battery capacity of the energy storage module of the energy storage system. The larger the battery capacity, the larger the threshold. In a possible embodiment, the threshold is fixed at 30.

[0037] Optionally, determining that the constituent data of the core adjustment combination does not meet the requirements specifically includes: S21 obtains the number of core adjustment combinations and the number of energy storage adjustment combinations; It should be noted that in the above steps, if the number of energy storage regulation combinations is small, that is, less than the preset energy storage regulation combination number threshold, then the number of energy storage regulation combinations at this time is relatively small, which will not affect the reliability of the detection and processing of the power quality of the core regulation combination. Therefore, on this basis, it can be directly determined that the composition data of the core regulation combination meets the requirements.

[0038] It is also understandable that in the above steps, if the number of energy storage regulation combinations is not small, that is, not less than the preset energy storage regulation combination number threshold, it is also necessary to check whether the number of core regulation combinations meets the requirements. It is understandable that when the number of core regulation combinations is large, that is, greater than the threshold, the probability of abnormal power quality of the energy storage battery when the remaining capacity is small is greater. Therefore, on this basis, if the power quality of all energy storage regulation combinations is detected and processed, it is possible that the time when the remaining capacity of the energy storage battery is small is short, and the power quality of the core regulation combination cannot be effectively detected and processed. Therefore, on this basis, it is determined that the composition data of the core regulation combination does not meet the requirements.

[0039] Furthermore, when the number of core adjustment combinations is not large, if the number of core adjustment combinations is less than the preset core combination number threshold, then since the number of core adjustment combinations is small, it can be directly determined that the constituent data of the core adjustment combinations meets the requirements. In other cases, proceed to the next step.

[0040] S22: determining, based on the energy storage regulation data of the core regulation combination, a ratio of the matching regulation times of different core regulation combinations to the matching regulation times of different non-core regulation combinations, and determining regulation demand weights of the different core regulation combinations according to the ratio; It should be noted that in the above steps, it is necessary to determine whether the sum of the matching adjustment times of different core adjustment combinations meets the requirements. It is understandable that when the proportion of the sum of the matching adjustment times of different core adjustment combinations in the historical adjustment times of the energy storage system is less than a preset proportion threshold, in order to ensure the reliability of the detection processing of the core adjustment combination, it can be directly determined that the composition data of the core adjustment combination meets the requirements; If the sum of the matching adjustment times of different core adjustment combinations accounts for less than a preset threshold in the historical adjustment times of the energy storage system, the core adjustment combination has a large number of adjustments. Therefore, it is necessary to further determine whether the sum of the matching adjustment times of different core adjustment combinations meets the requirements. It is understandable that when the sum of the matching adjustment times of different adjustment combinations does not meet the requirements, that is, when the sum of the matching adjustment times of different adjustment combinations is greater than a certain threshold, it can be directly determined that the constituent data of the core adjustment combination does not meet the requirements; It should also be noted that even if the sum of the matching adjustment times of different adjustment combinations meets the requirements, in a possible embodiment, the adjustment requirement weight is determined based on the product of the ratio of the matching adjustment times of the core adjustment combination to the matching adjustment times of different adjustment combinations that do not belong to the core adjustment combination.

[0041] In a possible embodiment, when the number of core adjustment combinations whose adjustment demand weights are greater than a preset demand threshold does not meet the requirements, that is, is greater than the threshold, then it can be directly determined that the constituent data of the core adjustment combination does not meet the requirements. In other cases, proceed to the next step.

[0042] S23 determines whether the constituent data of the core regulation combination meets the requirements based on the number of the core regulation combinations and the number of the energy storage regulation combinations and in combination with the regulation demand weights of different core regulation combinations.

[0043] It can be understood that in a possible embodiment, the adjustment requirement value of the core adjustment combination is determined by taking the sum of the adjustment requirement weights of different core adjustment combinations, and a mapping function is constructed based on the adjustment requirement value and the number of energy storage adjustment combinations to determine the detection matching value of the core adjustment combination, wherein when the detection matching value is greater than a preset matching threshold, it is determined that the constituent data of the core adjustment combination meets the requirements. In a possible implementation, the mapping function is constructed by a mathematical model based on the hierarchical analysis method.

[0044] S3 determines a detection and processing sequence for power quality of different core regulation combinations based on similarities of energy storage modules between the different core regulation combinations, and determines, based on the detection and processing sequence, a changed energy storage module and a switching deviation combination when the core regulation combination switches to the next core regulation combination; Specifically, such as Figure 4 As shown, the method for determining the detection and processing order of the power quality of the core regulation combination is: The core adjustment combinations are freely combined to obtain multiple detection and processing sequence schemes; Determining the number of energy storage module deviations between different adjacent core adjustment combinations according to the deviations of the energy storage modules in different adjacent core adjustment combinations in different detection and processing sequence schemes; Based on the number of deviations of energy storage modules between different core regulation combinations, a detection and processing sequence of the power quality of the core regulation combinations is determined.

[0045] It can be understood that the detection and processing sequence scheme is freely placed according to the positions of different core adjustment combinations, and the obtained detection and processing sequence scheme, in a possible embodiment, for the core adjustment combinations A, B, and C, the detection and processing sequence schemes include ABC, BCA, BAC, CAB, ACB, CBA, etc., thereby realizing the determination of different possible detection and processing sequences, wherein the number of deviations of energy storage modules between energy storage modules of different adjustment combinations and the detection and processing sequence scheme with the least deviations are used to determine the detection and processing sequence of the power quality of the core adjustment combination.

[0046] Specifically, the method for determining the switching deviation combination is: The energy storage module that changes when the core adjustment combination switches to the next core adjustment combination is used as the variable energy storage module; According to the number of the variable energy storage modules, it is determined whether the core adjustment combination is a switching deviation combination.

[0047] It can be understood that when the number of the variable energy storage modules, that is, the deviation number, does not meet the requirements, the core adjustment combination is determined to be a switching deviation combination. In a possible embodiment, it is determined based on the ratio of the number of variable energy storage modules to the number of energy storage modules in the switching deviation combination. When the ratio is greater than 0.4, the number of energy storage modules that change during the adjustment process is large, which may cause the operation of the energy storage system to be unstable. Therefore, it can be used as a switching deviation combination.

[0048] S4 determines the detection and processing method of the power quality when different switching deviation combinations switch to the next core regulation combination according to the detection and processing order of different switching deviation combinations, combined with the changed energy storage modules of different switching deviation modules and the energy storage regulation data of different energy storage regulation combinations.

[0049] Specifically, the method for determining the detection and processing method of the power quality when the switching deviation combination is switched to the next core adjustment combination is: Determining the number of subsequent switching deviation combinations and the number of core adjustment combinations according to the detection and processing order of the switching deviation combination, and using the number of subsequent switching deviation combinations as the number of deviation combinations and the number of subsequent core adjustment combinations as the number of core combinations; Determining a buffer energy storage combination of the switching deviation combination according to the changed energy storage module when the switching deviation combination switches to the next core adjustment combination, and determining the matching adjustment times of the buffer energy storage combination; Based on the number of deviation combinations, the number of core combinations and the number of matching adjustments of the buffer energy storage combination, a detection and processing method for power quality when the switching deviation combination is switched to the next core adjustment combination is determined.

[0050] It can be understood that the buffer energy storage combination is determined by adding the switching deviation combination to the energy storage module that needs to be changed. Specifically, the switching deviation combination is switched to the buffer energy storage combination, and then the buffer energy storage combination is determined with the minimum number of switched energy storage modules when the buffer energy storage combination is switched to the next core adjustment combination as the goal.

[0051] In a possible embodiment, if switching from ABC to AD, the energy storage module that needs to be changed is BCD, and the buffer energy storage module is ABD or ACD, that is, ensuring the switching process.

[0052] Optionally, in the above steps, it is first determined whether the number of variable energy storage modules of the switching deviation combination is too large. If the number of variable energy storage modules is greater than the number of switching deviation combinations of the switching deviation combination, that is, the number of variable energy storage modules of the switching deviation combination is large, in a possible embodiment, the switching deviation combination in which the number of variable energy storage modules is greater than the switching deviation combination is regarded as a severe deviation combination. When the number of severe deviation combinations in the switching deviation combination accounts for less than 10%, it can be directly determined that the power quality detection processing of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used for power quality detection processing, that is, the switching deviation combination is first switched to the buffer energy storage combination, and then the buffer energy storage combination is switched to the next core adjustment combination.

[0053] In addition, it can be understood that if the number of variable energy storage modules is greater than the number of switching deviation combinations of the switching deviation combination, and when the number of severe deviation combinations in the switching deviation combination accounts for more than 30%, it can be directly determined that the power quality detection processing of the buffer energy storage combination is not required during the switching process.

[0054] Furthermore, when the proportion of severely deviant combinations in the core regulation combination is between 10% and 30%, it is also necessary to determine whether the matching adjustment times of the buffer energy storage combination meet the requirements. When the matching adjustment times of the buffer energy storage combination are greater than a preset matching adjustment times threshold, or when the number of buffer energy storage combinations with matching adjustment times greater than that of other switching deviation combinations of the buffer energy storage combination is small, in one possible embodiment, when the proportion of the switching deviation combinations is less than 10%, it can be directly determined that power quality detection processing of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used for power quality detection processing, that is, the switching deviation combination is switched to the buffer energy storage combination first, and then the buffer energy storage combination is switched to the next core regulation combination.

[0055] It should also be noted that when the matching adjustment times of the buffer energy storage combination meet the requirements, if the number of deviation combinations and the number of core combinations both meet the requirements, that is, the remaining number of deviation combinations accounts for less than 10% of all deviation energy storage combinations and the remaining number of core combinations accounts for less than 20% of all core energy storage combinations, then it can be directly determined that the power quality detection processing of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used for power quality detection processing, that is, the switching deviation combination is first switched to the buffer energy storage combination, and then the buffer energy storage combination is switched to the next core adjustment combination. If the requirements are not met, there is no need to detect the power quality of the buffer energy storage combination, that is, directly switch from the switching deviation combination to the next core adjustment combination.

[0056] Optionally, the method for determining the detection and processing method of the power quality when the switching deviation combination is switched to the next core adjustment combination is: Determining a buffer energy storage combination of the switching deviation combination according to the changed energy storage module when the switching deviation combination switches to the next core adjustment combination, and determining the matching adjustment times of the buffer energy storage combination; Optionally, in the above steps, if the number of matching adjustments of the buffer energy storage combination is large, that is, greater than a preset matching adjustment number threshold, it can be directly determined that the power quality detection process of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used for power quality detection. Furthermore, in the above steps, if the number of matching adjustments of the buffer energy storage combination is small, and if the number of buffer energy storage combinations whose matching adjustments are greater than that of other switching deviation combinations of the buffer energy storage combination is small, in one possible embodiment, when the number of switching deviation combinations accounts for less than 10%, it can be directly determined that power quality detection processing of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used for power quality detection processing, that is, the switching deviation combination is first switched to the buffer energy storage combination, and then the buffer energy storage combination is switched to the next core adjustment combination.

[0057] It is also understandable that if the number of buffer energy storage combinations whose matching adjustment times is greater than that of other switching deviation combinations of the buffer energy storage combination is not small, then the process proceeds to the next step. Determining the number of subsequent switching deviation combinations and the number of core adjustment combinations following the switching deviation combination in the order of detection and processing of the switching deviation combination, using the number of subsequent switching deviation combinations as the number of deviation combinations and the number of subsequent core adjustment combinations as the number of core combinations, and determining a switching impact value based on the number of core combinations and the number of deviation combinations; It should be noted that, in one possible embodiment, if the number of deviation combinations and the number of core combinations both meet the requirements, that is, the number of remaining deviation combinations accounts for less than 10% of all deviation energy storage combinations and the number of remaining core combinations accounts for less than 20% of all core energy storage combinations, then it can be directly determined that power quality detection processing of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used for power quality detection processing, that is, the deviation combination is first switched to the buffer energy storage combination, and then the buffer energy storage combination is switched to the next core adjustment combination. It should also be noted that if any one of the number of deviation combinations and the number of core combinations does not meet the requirements, the switching impact value is determined based on the product of the ratio of the number of core combinations to the number of core adjustment combinations and the ratio of the number of deviation combinations to the number of switching deviation combinations.

[0058] In a possible embodiment, if the switching impact value is greater than a preset switching impact threshold, it can be directly determined that the power quality detection process of the buffer energy storage combination is not required during the switching process; Based on the switching impact value and the matching adjustment times of the buffer energy storage combination, a detection and processing method for the power quality when the switching deviation combination switches to the next core adjustment combination is determined.

[0059] In a possible embodiment, in the above steps, the switching matching value of the switching deviation combination is determined based on the matching adjustment times and the switching impact value, wherein the greater the matching adjustment times and the smaller the switching impact value, the greater the switching matching value. In a possible embodiment, it is constructed through a mathematical model based on expert scoring.

[0060] Specifically, when the switching matching value is greater than a preset matching threshold, it can be directly determined that the power quality detection processing of the buffer energy storage combination is required during the switching process. When there are multiple buffer energy storage combinations, the buffer energy storage module with the largest number of matching adjustments is used to perform the power quality detection processing. That is, the switching deviation combination is first switched to the buffer energy storage combination, and then the buffer energy storage combination is switched to the next core regulation combination. In other cases, it is not necessary to perform the power quality detection processing of the buffer energy storage combination, that is, the switching deviation combination is directly switched to the next core regulation combination.

[0061] Example 2 Second, as Figure 5 As shown, the present invention provides a computer system, comprising: a memory and a processor in communication connection, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the above-mentioned power quality detection, analysis and processing method of an energy storage system when running the computer program.

[0062] Example 3 In a third aspect, the present invention provides a computer storage medium having a computer program stored thereon. When the computer program is executed in a computer, the computer is caused to execute the above-mentioned method for detecting, analyzing and processing power quality of an energy storage system.

[0063] The various embodiments in this specification are described in a progressive manner. Similar portions between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the device, apparatus, and non-volatile computer storage medium embodiments are generally similar to the method embodiments, so their descriptions are relatively simplified. For relevant details, refer to the descriptions of the method embodiments.

[0064] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order shown or the sequential order to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0065] The foregoing description is merely one or more embodiments of this specification and is not intended to limit this specification. It will be apparent to those skilled in the art that various modifications and variations may be made to one or more embodiments of this specification. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of one or more embodiments of this specification are intended to be within the scope of the claims of this specification.

Claims

1. A method for detecting and processing power quality of an energy storage system, characterized in that: Specifically include: Determining coordinated regulation data between different energy storage modules based on energy storage regulation data of the energy storage system, and determining a reference energy storage module among the energy storage modules based on the coordinated regulation data between the energy storage modules and other energy storage modules; Freely combining other energy storage modules with the reference energy storage module to obtain multiple energy storage module combinations, determining a core adjustment combination based on the energy storage adjustment data of different energy storage adjustment combinations, and proceeding to the next step when the constituent data of the core adjustment combination does not meet the requirements; Determining a detection and processing sequence for power quality of different core regulation combinations based on similarities in energy storage modules between different core regulation combinations, and determining a changed energy storage module and a switching deviation combination when switching from one core regulation combination to the next based on the detection and processing sequence; According to the detection and processing order of different switching deviation combinations, and combined with the changing energy storage modules of different switching deviation modules and the energy storage regulation data of different energy storage regulation combinations, the detection and processing method of the power quality when different switching deviation combinations switch to the next core regulation combination is determined.

2. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 1, wherein: The energy storage adjustment data includes the number of energy storage adjustments of the energy storage system in history and the energy storage modules used for different energy storage adjustment times.

3. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 1, wherein: The coordinated adjustment data is the number of energy storage adjustments performed by the energy storage module together with other energy storage modules.

4. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 1, wherein: The method for determining the reference energy storage module in the energy storage module is: Based on the coordinated adjustment data, determining a number of energy storage adjustments that the energy storage module and other energy storage modules in the energy storage system have used simultaneously in history, and using the number as the coordinated adjustment number; Whether the energy storage module is a reference energy storage module is determined according to the number of coordinated adjustments with other energy storage modules.

5. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 4, wherein: The energy storage module with the largest sum of cooperative adjustment times with other energy storage modules is used as the benchmark energy storage module.

6. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 1, wherein: Multiple energy storage module combinations can be obtained by free combination, including: Other energy storage modules are freely combined with the reference energy storage module to obtain multiple energy storage module combinations.

7. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 1, wherein: Determining that the constituent data of the core adjustment combination does not meet the requirements, specifically including: Obtaining the number of the core adjustment combinations; Based on the number of the core adjustment combinations, it is determined whether the constituent data of the core adjustment combinations meet the requirements.

8. The method for detecting, analyzing and processing power quality of an energy storage system according to claim 1, wherein: The method for determining the detection and processing method of the power quality when the switching deviation combination is switched to the next core adjustment combination is: Determining the number of subsequent switching deviation combinations and the number of core adjustment combinations according to the detection and processing order of the switching deviation combination, and using the number of subsequent switching deviation combinations as the number of deviation combinations and the number of subsequent core adjustment combinations as the number of core combinations; Determining a buffer energy storage combination of the switching deviation combination according to the changed energy storage module when the switching deviation combination switches to the next core adjustment combination, and determining the matching adjustment times of the buffer energy storage combination; Based on the number of deviation combinations, the number of core combinations and the number of matching adjustments of the buffer energy storage combination, a detection and processing method for power quality when the switching deviation combination is switched to the next core adjustment combination is determined.

9. A computer system comprising: A memory and a processor in communication connection, 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 power quality detection, analysis and processing method of an energy storage system according to any one of claims 1 to 8.

10. A computer storage medium having a computer program stored thereon, which, when executed in a computer, causes the computer to execute the power quality detection, analysis and processing method for an energy storage system according to any one of claims 1 to 8.

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