A hybrid energy storage device and a state assessment method thereof

Abstract

The present invention provides a hybrid energy storage device and a state assessment method thereof, belonging to the technical field of energy storage devices. The method specifically comprises: determining the historical adjustment times of different types of energy storage modes based on historical energy storage adjustment data, and determining the state assessment requirements of different types of energy storage modes and screening collaborative energy storage adjustment modes in combination with the adjustment data of different historical adjustment times; determining the adjustment state values of different screening collaborative energy storage adjustment modes based on the similarity of energy storage adjustment curves of different energy storage modes in different operating ranges; and determining the state assessment result of the hybrid energy storage device in combination with the state assessment requirements of different types of energy storage modes and the adjustment state values of different types of single energy storage modes, thereby ensuring the accuracy of the state assessment result.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage devices, and in particular relates to a hybrid energy storage device and a state assessment method thereof. Background Art

[0002] Compared with energy storage devices that adopt a single form of energy storage, hybrid energy storage devices have multiple advantages such as higher adjustment convenience, higher response rate and higher adjustment safety. However, at the same time, due to the more complex structure of hybrid energy storage devices, how to evaluate the operating status of hybrid energy storage devices has become a technical problem that needs to be solved urgently.

[0003] To address the above technical issues, the existing technical solution, in the invention patent CN202211275047.X "A hybrid energy storage system based on multi-element energy storage combined control", uses a twin energy storage model to perform real-time twin monitoring of energy storage devices. Through twin monitoring, intelligent power management and power distribution of the microgrid can be achieved, ensuring the operational safety and reliability of the hybrid energy storage system. However, analysis reveals the following technical problems:

[0004] Unlike ordinary energy storage devices, hybrid energy storage devices often use different energy storage methods for adjustment under different energy storage adjustment requirements. For example, when the energy storage adjustment requirement is too high, it is often necessary to use lithium batteries for adjustment. When the adjustment rate is too fast, it is often necessary to use a combination of lithium batteries and supercapacitors for adjustment. Therefore, if the actual adjustment requirements of the hybrid energy storage device cannot be combined, the status assessment of the hybrid energy storage device cannot be accurately achieved.

[0005] In response to the above technical problems, the present invention provides a hybrid energy storage device and a state assessment method thereof. 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 hybrid energy storage device status assessment method, which is characterized by specifically comprising:

[0008] S1 determines that the regulation state of the hybrid energy storage device meets the requirements based on the demand response deviation of different dimensions of the hybrid energy storage device under different historical energy storage regulation times and the power quality, and proceeds to the next step;

[0009] S2 uses the historical energy storage adjustment times of any energy storage method as the single energy storage adjustment times, and determines that the adjustment state values of different types of single energy storage methods meet the requirements based on the demand response deviation of different dimensions of the single energy storage adjustment times and the power quality, and then proceeds to the next step;

[0010] S3 determines the historical adjustment times of different types of energy storage modes based on the historical energy storage adjustment data, and performs status assessment on the demand for different types of energy storage modes and screens the coordinated energy storage adjustment modes in combination with the adjustment data of different historical adjustment times;

[0011] S4 determines the adjustment state value of the coordinated energy storage adjustment mode by performing different screening according to the similarity of the energy storage adjustment curves of different energy storage modes in different operating ranges, and determines the state evaluation result of the hybrid energy storage device by combining the state evaluation requirements of different types of energy storage modes and the adjustment state values of different types of single energy storage modes.

[0012] A further technical solution is that the demand response deviations in different dimensions include response rate deviation, response capacity deviation and response time deviation.

[0013] A further technical solution is that the power quality is determined according to the harmonic content of the hybrid energy storage device at different historical energy storage adjustment times.

[0014] A further technical solution is that the method for determining the adjustment state value of the screening collaborative energy storage adjustment mode is:

[0015] Using different forms of energy storage modes corresponding to the screened collaborative energy storage regulation mode as matching energy storage modes, obtaining energy storage regulation curves of different matching energy storage modes in different operating intervals, and determining the similarity of the regulation curves in different operating intervals based on similarities between the energy storage regulation curves and energy storage regulation curves of other matching energy storage modes in different operating intervals;

[0016] The similarity evaluation amounts of different forms of matching energy storage methods are determined by the similarity of the adjustment curves in different operating intervals, and the adjustment state value of the screening collaborative energy storage adjustment method is determined using the similarity evaluation amounts of different forms of matching energy storage methods.

[0017] A further technical solution is that the adjustment state value of the screening collaborative energy storage adjustment mode ranges from 0 to 1, wherein the larger the adjustment state value of the screening collaborative energy storage adjustment mode is, the better the adjustment state of the screening collaborative energy storage adjustment mode is.

[0018] A further technical solution is to use the energy storage state evaluation value to determine the state evaluation result of the hybrid energy storage device, specifically including:

[0019] An energy storage state interval corresponding to the energy storage state evaluation amount of the hybrid energy storage device is determined according to the energy storage state evaluation amount, and a state evaluation result of the hybrid energy storage device is determined based on a preset state evaluation result corresponding to the energy storage state interval.

[0020] In a second aspect, the present invention provides a hybrid energy storage device, which uses the above-mentioned hybrid energy storage device state assessment method, specifically comprising:

[0021] Regulation status evaluation module, regulation status value evaluation module, collaborative energy storage screening module, evaluation result output module;

[0022] The regulation state evaluation module is responsible for determining whether the regulation state of the hybrid energy storage device meets the requirements based on the demand response deviations and power quality of different dimensions of the hybrid energy storage device under different historical energy storage regulation times;

[0023] The regulation state value evaluation module is responsible for taking the historical energy storage regulation times of any energy storage mode as a single energy storage regulation times, and determining whether the regulation state values of different types of single energy storage modes meet the requirements based on the demand response deviations and power quality of different dimensions of the single energy storage regulation times;

[0024] The collaborative energy storage screening module is responsible for determining the historical adjustment times of different types of energy storage modes based on the historical energy storage adjustment data, and performing status assessment demand of different types of energy storage modes and screening collaborative energy storage adjustment modes in combination with the adjustment data of different historical adjustment times;

[0025] The evaluation result output module is responsible for determining the adjustment state value of different screening collaborative energy storage adjustment modes based on the similarity of energy storage adjustment curves of different energy storage modes in different operating ranges, and determining the state evaluation result of the hybrid energy storage device in combination with the state evaluation requirements of different types of energy storage modes and the adjustment state values of different types of single energy storage modes.

[0026] The beneficial effects of the present invention are:

[0027] 1. Determine whether the regulation status of the hybrid energy storage device meets the requirements based on the demand response deviations in different dimensions and the power quality at different historical energy storage regulation times. This not only takes into account the corresponding deviations in demand in different dimensions, but also takes into account the power quality at different historical energy storage regulation times. This enables the screening of hybrid energy storage devices with abnormal regulation status from multiple dimensions, ensuring the efficiency of the status assessment of the hybrid energy storage device.

[0028] 2. The status assessment results of the hybrid energy storage device are determined based on different screening collaborative energy storage adjustment methods, the adjustment state values of different types of single energy storage methods, and the status assessment requirements of different types of energy storage methods. This not only takes into account the differences in the adjustment states of different screening collaborative energy storage adjustment methods and single energy storage methods, but also realizes the differences in the working reliability requirements of different types of energy storage methods by combining the status assessment requirements of different types of energy storage methods, thereby achieving accurate determination of the status assessment results of the hybrid energy storage device from multiple dimensions.

[0029] Other features and advantages will be described in the following description, and in part will 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.

[0030] 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

[0031] 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.

[0032] Figure 1 is a flow chart of a method for evaluating the state of a hybrid energy storage device;

[0033] Figure 2 It is a flow chart of a method for determining a regulation state value of a single energy storage mode;

[0034] Figure 3 It is a flow chart of a method for determining the state assessment demand of an energy storage mode. DETAILED DESCRIPTION

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0036] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" 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.

[0037] Example 1

[0038] To solve the above problems, according to one aspect of the present invention, Figure 1 According to one aspect of the present invention, a method for evaluating the state of a hybrid energy storage device is provided, which is characterized by specifically comprising:

[0039] S1 determines that the regulation state of the hybrid energy storage device meets the requirements based on the demand response deviation of different dimensions of the hybrid energy storage device under different historical energy storage regulation times and the power quality, and proceeds to the next step;

[0040] S2 uses the historical energy storage adjustment times of any energy storage method as the single energy storage adjustment times, and determines that the adjustment state values of different types of single energy storage methods meet the requirements based on the demand response deviation of different dimensions of the single energy storage adjustment times and the power quality, and then proceeds to the next step;

[0041] S3 determines the historical adjustment times of different types of energy storage modes based on the historical energy storage adjustment data, and performs status assessment on the demand for different types of energy storage modes and screens the coordinated energy storage adjustment modes in combination with the adjustment data of different historical adjustment times;

[0042] S4 determines the adjustment state value of the coordinated energy storage adjustment mode by performing different screening according to the similarity of the energy storage adjustment curves of different energy storage modes in different operating ranges, and determines the state evaluation result of the hybrid energy storage device by combining the state evaluation requirements of different types of energy storage modes and the adjustment state values of different types of single energy storage modes.

[0043] Furthermore, the demand response deviations in different dimensions include response rate deviation, response capacity deviation and response time deviation.

[0044] Specifically, the power quality is determined according to the harmonic content of the hybrid energy storage device under different historical energy storage adjustment times.

[0045] It should be noted that determining whether the regulation state of the hybrid energy storage device meets the requirements specifically includes:

[0046] Based on the demand response deviations in different dimensions under different historical energy storage adjustment times, the response rate deviations at different moments under different historical energy storage adjustment times are determined, and the comprehensive response deviations under different historical energy storage adjustment times are determined by combining the response time deviations and response capacity deviations under different historical energy storage adjustment times;

[0047] The harmonic content at different adjustment moments under different historical energy storage adjustment times is determined by analyzing the power quality under different historical energy storage adjustment times, and the power quality assessment value under different historical energy storage adjustment times is determined based on the number of adjustment moments at which the harmonic content does not meet the requirements;

[0048] The adjustment state value of the hybrid energy storage device is determined based on the power quality assessment value under different historical energy storage adjustment times and the comprehensive response deviation, and the adjustment state value is used to determine whether the adjustment state of the hybrid energy storage device meets the requirements.

[0049] It is understandable that the adjustment state value of the hybrid energy storage device ranges from 0 to 1, wherein when the adjustment state value of the hybrid energy storage device is less than a preset threshold, it is determined that the adjustment state of the hybrid energy storage device does not meet the requirements.

[0050] It should be noted that, when the adjustment state of the hybrid energy storage device does not meet the requirements, it is determined that the state evaluation result of the hybrid energy storage device is abnormal.

[0051] In another embodiment, determining that the regulation state of the hybrid energy storage device meets the requirements specifically includes:

[0052] Determining response rate deviations at different moments under different historical energy storage adjustment times based on demand response deviations in different dimensions under different historical energy storage adjustment times, and determining the number of deviation energy storage adjustment times based on the number of moments when the response rate deviation does not meet the requirements, and determining whether the deviation energy storage adjustment times meet the requirements. If so, proceeding to the next step; if not, determining that the adjustment state of the hybrid energy storage device does not meet the requirements;

[0053] Determining the harmonic content at different adjustment moments under different historical energy storage adjustment times based on the power quality under different historical energy storage adjustment times, and determining the quality deviation energy storage adjustment times based on the number of adjustment moments at which the harmonic content does not meet the requirements, and judging whether the quality deviation energy storage adjustment times meet the requirements. If so, proceeding to the next step; if not, determining that the adjustment state of the hybrid energy storage device does not meet the requirements;

[0054] The deviation energy storage adjustment times and the mass deviation energy storage adjustment times are used as screening adjustment times, and the comprehensive response deviation amounts under different screening adjustment times are determined according to the response rate deviation, response time deviation, and response capacity deviation at different moments under different screening adjustment times. It is determined whether the screening adjustment times for which the comprehensive response deviation amount does not meet the requirement meet the requirement. If so, proceed to the next step; if not, it is determined that the adjustment state of the hybrid energy storage device does not meet the requirement.

[0055] Determine the harmonic content at different adjustment moments under different screening adjustment times based on the power quality under different screening adjustment times, and determine the power quality assessment value under different screening adjustment times based on the number of adjustment moments at which the harmonic content does not meet the requirements, and determine whether the screening adjustment times at which the power quality assessment value does not meet the requirements meet the requirements. If so, proceed to the next step; if not, determine that the adjustment state of the hybrid energy storage device does not meet the requirements.

[0056] Based on the power quality assessment values and the comprehensive response deviations under different screening adjustment times, the energy storage adjustment state values under different screening adjustment times are determined, and whether the screening adjustment times at which the energy storage adjustment state value does not meet the requirements are determined; if so, proceeding to the next step; if not, determining that the adjustment state of the hybrid energy storage device does not meet the requirements;

[0057] The adjustment state value of the hybrid energy storage device is determined according to the energy storage adjustment state values under different screening adjustment times, and the adjustment state value is used to determine whether the adjustment state of the hybrid energy storage device meets the requirements.

[0058] It should be noted that if Figure 2 As shown, the method for determining the adjustment state value of the single energy storage mode is:

[0059] The historical energy storage adjustment times corresponding to a single energy storage adjustment mode are used as the matching adjustment times. Based on the demand response deviations in different dimensions under different matching adjustment times, the response rate deviations at different times under different matching adjustment times are determined. The comprehensive response deviations under different matching adjustment times are then determined by combining the response duration deviations and response capacity deviations under different matching adjustment times.

[0060] Determine the harmonic content at different adjustment moments under different matching adjustment times by analyzing the power quality under different matching adjustment times, and determine the power quality evaluation value under different matching adjustment times based on the number of adjustment moments at which the harmonic content does not meet the requirements;

[0061] The adjustment state value of the single energy storage mode is determined based on the power quality evaluation value and the comprehensive response deviation under different matching adjustment times.

[0062] Furthermore, when the adjustment state value of any type of single energy storage mode does not meet the requirements, it is determined that the state evaluation result of the hybrid energy storage device is abnormal.

[0063] In another embodiment, the method for determining the adjustment state value of the single energy storage mode is:

[0064] The historical energy storage adjustment times corresponding to the single energy storage adjustment mode are used as the matching adjustment times, and whether the number of response rate deviation moments in the matching adjustment times meets the requirements is determined. If so, the process proceeds to the next step; if not, it is determined that the adjustment state value of the single energy storage mode does not meet the requirements;

[0065] Determining whether the number of adjustment moments at which the harmonic content in the matching adjustment times does not meet the requirement meets the requirement, if so, proceeding to the next step; if not, determining that the adjustment state value of the single energy storage mode does not meet the requirement;

[0066] Based on the demand response deviations of different dimensions under different matching adjustment times, the response rate deviations at different times under different matching adjustment times are determined, and the comprehensive response deviations under different matching adjustment times are determined in combination with the response time deviations and response capacity deviations under different matching adjustment times. It is judged whether the matching adjustment times for which the comprehensive response deviation does not meet the requirements meet the requirements. If so, proceed to the next step; if not, determine that the adjustment state value of the single energy storage mode does not meet the requirements.

[0067] Determine the harmonic content at different adjustment moments under different matching adjustment times by measuring the power quality under different matching adjustment times, and determine the power quality evaluation value under different matching adjustment times in combination with the number of adjustment moments at which the harmonic content does not meet the requirements, and judge whether the matching adjustment number at which the power quality evaluation value does not meet the requirements meets the requirements. If so, proceed to the next step; if not, determine that the adjustment state value of the single energy storage mode does not meet the requirements.

[0068] The adjustment state value of the single energy storage mode is determined based on the power quality evaluation value and the comprehensive response deviation under different matching adjustment times.

[0069] It should be noted that if Figure 3 As shown, the method for determining the state assessment demand of the energy storage mode is:

[0070] Determining adjustment durations of different historical adjustment times based on adjustment data of different historical adjustment times of the energy storage mode, and determining weight values of different historical adjustment times in combination with energy storage adjustment depths of different historical adjustment times;

[0071] The state assessment demand of the energy storage mode is determined by the historical adjustment times of the energy storage mode and the weight values of different historical adjustment times.

[0072] Furthermore, when the state assessment demand of the energy storage mode using multiple forms of energy storage modes for energy storage regulation meets the requirement, the energy storage mode using multiple forms of energy storage modes for energy storage regulation is determined to be the screening collaborative energy storage regulation mode.

[0073] It should be further explained that when multiple forms of energy storage methods are used for energy storage adjustment, the method for determining the state assessment demand of the energy storage method is:

[0074] Obtaining a historical adjustment number of the energy storage mode, determining whether the historical adjustment number of the energy storage mode is less than a preset adjustment number, if not, proceeding to the next step, and if so, determining that the energy storage mode does not belong to the screening collaborative energy storage adjustment mode;

[0075] Determining adjustment durations for different historical adjustment times based on adjustment data for different historical adjustment times of the energy storage mode, and determining a total adjustment duration based on the adjustment durations for different historical adjustment times, and judging whether the total adjustment duration of the energy storage mode is less than a preset duration; if so, determining that the energy storage mode does not belong to the screening collaborative energy storage adjustment mode; if not, proceeding to the next step;

[0076] Determining adjustment durations of different historical adjustment times based on adjustment data of different historical adjustment times of the energy storage mode, and determining weight values of different historical adjustment times in combination with energy storage adjustment depths of different historical adjustment times, and determining whether there are historical adjustment times with weight values greater than a preset weight limit value. If so, proceeding to the next step; if not, determining that the energy storage mode does not belong to the screening collaborative energy storage adjustment mode;

[0077] Determine whether the sum of the weight values of different historical adjustment times is greater than a preset weight threshold. If so, proceed to the next step. If not, determine that the energy storage mode does not belong to the screening collaborative energy storage adjustment mode;

[0078] The state assessment demand of the energy storage mode is determined by the historical adjustment times of the energy storage mode and the weight values of different historical adjustment times.

[0079] Specifically, the method for determining the adjustment state value of the screening collaborative energy storage adjustment mode is:

[0080] Using different forms of energy storage modes corresponding to the screened collaborative energy storage regulation mode as matching energy storage modes, obtaining energy storage regulation curves of different matching energy storage modes in different operating intervals, and determining the similarity of the regulation curves in different operating intervals based on similarities between the energy storage regulation curves and energy storage regulation curves of other matching energy storage modes in different operating intervals;

[0081] The similarity evaluation amounts of different forms of matching energy storage methods are determined by the similarity of the adjustment curves in different operating intervals, and the adjustment state value of the screening collaborative energy storage adjustment method is determined using the similarity evaluation amounts of different forms of matching energy storage methods.

[0082] Furthermore, the adjustment state value of the screening collaborative energy storage adjustment mode ranges from 0 to 1, wherein the larger the adjustment state value of the screening collaborative energy storage adjustment mode is, the better the adjustment state of the screening collaborative energy storage adjustment mode is.

[0083] Specifically, the method for determining the status assessment result of the hybrid energy storage device is:

[0084] Determine the single energy storage state assessment amount based on the regulation state value of different types of single energy storage modes and the assessment demand assessment amount;

[0085] Determine the collaborative energy storage state evaluation amount by using the adjustment state values of different screening collaborative energy storage adjustment modes and the state evaluation requirements of different screening collaborative energy storage adjustment modes;

[0086] The energy storage state evaluation amount of the hybrid energy storage device is determined by using the coordinated energy storage state evaluation amount and the single energy storage state evaluation amount, and the state evaluation result of the hybrid energy storage device is determined by using the energy storage state evaluation amount.

[0087] It should be noted that determining the status evaluation result of the hybrid energy storage device using the energy storage status evaluation amount specifically includes:

[0088] An energy storage state interval corresponding to the energy storage state evaluation amount of the hybrid energy storage device is determined according to the energy storage state evaluation amount, and a state evaluation result of the hybrid energy storage device is determined based on a preset state evaluation result corresponding to the energy storage state interval.

[0089] In another embodiment, the method for determining the status assessment result of the hybrid energy storage device is:

[0090] Determine whether there is a screening collaborative energy storage adjustment mode whose adjustment state value does not meet the requirements by screening the adjustment state values of different collaborative energy storage adjustment modes; if so, determine that the state assessment result of the hybrid energy storage device is abnormal; if not, proceed to the next step;

[0091] Determining state thresholds of different types of single energy storage modes based on state demand assessments of different types of single energy storage modes, and determining whether there is a critical risk single energy storage mode in combination with the adjustment state values of different single energy storage modes; if so, determining that the state assessment result of the hybrid energy storage device is abnormal; if not, proceeding to the next step;

[0092] Determine the state thresholds of different types of screening collaborative energy storage regulation modes based on the state demand assessment amounts of different types of screening collaborative energy storage regulation modes, and determine whether there is a critical risk collaborative energy storage regulation mode in combination with the adjustment state values of different screening collaborative energy storage regulation modes. If so, determine that the state assessment result of the hybrid energy storage device is abnormal; if not, proceed to the next step;

[0093] Determine the single energy storage state assessment quantity based on the regulation state value and assessment demand assessment quantity of different types of single energy storage modes, and determine the collaborative energy storage state assessment quantity based on the regulation state value of different screening collaborative energy storage regulation modes and the state assessment demand quantities of different screening collaborative energy storage regulation modes;

[0094] The energy storage state evaluation amount of the hybrid energy storage device is determined by using the coordinated energy storage state evaluation amount and the single energy storage state evaluation amount, and the state evaluation result of the hybrid energy storage device is determined by using the energy storage state evaluation amount.

[0095] Example 2

[0096] In another aspect, the present invention provides a hybrid energy storage device, which uses the above-mentioned hybrid energy storage device state assessment method, specifically comprising:

[0097] Regulation status evaluation module, regulation status value evaluation module, collaborative energy storage screening module, evaluation result output module;

[0098] The regulation state evaluation module is responsible for determining whether the regulation state of the hybrid energy storage device meets the requirements based on the demand response deviations and power quality of different dimensions of the hybrid energy storage device under different historical energy storage regulation times;

[0099] The regulation state value evaluation module is responsible for taking the historical energy storage regulation times of any energy storage mode as a single energy storage regulation times, and determining whether the regulation state values of different types of single energy storage modes meet the requirements based on the demand response deviations and power quality of different dimensions of the single energy storage regulation times;

[0100] The collaborative energy storage screening module is responsible for determining the historical adjustment times of different types of energy storage modes based on the historical energy storage adjustment data, and performing status assessment demand of different types of energy storage modes and screening collaborative energy storage adjustment modes in combination with the adjustment data of different historical adjustment times;

[0101] The evaluation result output module is responsible for determining the adjustment state value of different screening collaborative energy storage adjustment modes based on the similarity of energy storage adjustment curves of different energy storage modes in different operating ranges, and determining the state evaluation result of the hybrid energy storage device in combination with the state evaluation requirements of different types of energy storage modes and the adjustment state values of different types of single energy storage modes.

[0102] 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.

[0103] 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.

[0104] 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 evaluating the state of a hybrid energy storage device, characterized in that: Specifically include: When it is determined that the regulation state of the hybrid energy storage device meets the requirements based on the demand response deviations of different dimensions and the power quality of the hybrid energy storage device under different historical energy storage regulation times, proceeding to the next step; The historical energy storage adjustment times of any energy storage method are used as the single energy storage adjustment times. When the adjustment state values of different types of single energy storage methods are determined to meet the requirements based on the demand response deviations and power quality of different dimensions of the single energy storage adjustment times, the next step is entered. Determine the historical adjustment times of different types of energy storage methods based on historical energy storage adjustment data, and use the adjustment data of different historical adjustment times to assess the status demand of different types of energy storage methods and screen the coordinated energy storage adjustment methods; Different screening and collaborative energy storage regulation methods are determined based on the similarity of energy storage regulation curves within different operating ranges. The state assessment results of the hybrid energy storage device are determined by combining the state assessment requirements of different energy storage methods and the regulation state values of different single energy storage methods. The method for determining the adjustment state value of the single energy storage mode is: The historical energy storage adjustment times corresponding to a single energy storage adjustment mode are used as the matching adjustment times. Based on the demand response deviations in different dimensions under different matching adjustment times, the response rate deviations at different times under different matching adjustment times are determined. The comprehensive response deviations under different matching adjustment times are then determined by combining the response duration deviations and response capacity deviations under different matching adjustment times. Determine the harmonic content at different adjustment moments under different matching adjustment times by analyzing the power quality under different matching adjustment times, and determine the power quality evaluation value under different matching adjustment times based on the number of adjustment moments at which the harmonic content does not meet the requirements; Determining the regulation state value of the single energy storage mode based on the power quality assessment value and the comprehensive response deviation under different matching adjustment times; The method for determining the adjustment state value of the screening collaborative energy storage adjustment mode is: Using different forms of energy storage modes corresponding to the screened collaborative energy storage regulation mode as matching energy storage modes, obtaining energy storage regulation curves of different matching energy storage modes in different operating intervals, and determining the similarity of the regulation curves in different operating intervals based on similarities between the energy storage regulation curves and energy storage regulation curves of other matching energy storage modes in different operating intervals; The similarity evaluation amounts of different forms of matching energy storage methods are determined by the similarity of the adjustment curves in different operating intervals, and the adjustment state value of the screening collaborative energy storage adjustment method is determined using the similarity evaluation amounts of different forms of matching energy storage methods.

2. The hybrid energy storage device state assessment method according to claim 1, characterized in that: The demand response deviations in different dimensions include response rate deviation, response capacity deviation and response time deviation.

3. The hybrid energy storage device state assessment method according to claim 1, characterized in that: The power quality is determined according to the harmonic content of the hybrid energy storage device at different historical energy storage adjustment times.

4. The hybrid energy storage device state assessment method according to claim 1, characterized in that: Determining that the regulation state of the hybrid energy storage device meets the requirements specifically includes: Based on the demand response deviations in different dimensions under different historical energy storage adjustment times, the response rate deviations at different moments under different historical energy storage adjustment times are determined, and the comprehensive response deviations under different historical energy storage adjustment times are determined by combining the response time deviations and response capacity deviations under different historical energy storage adjustment times; The harmonic content at different adjustment moments under different historical energy storage adjustment times is determined by analyzing the power quality under different historical energy storage adjustment times, and the power quality assessment value under different historical energy storage adjustment times is determined based on the number of adjustment moments at which the harmonic content does not meet the requirements; The adjustment state value of the hybrid energy storage device is determined based on the power quality assessment value under different historical energy storage adjustment times and the comprehensive response deviation, and the adjustment state value is used to determine whether the adjustment state of the hybrid energy storage device meets the requirements.

5. The hybrid energy storage device state assessment method according to claim 1, characterized in that: When the adjustment state of the hybrid energy storage device does not meet the requirements, it is determined that the state evaluation result of the hybrid energy storage device is abnormal.

6. The hybrid energy storage device state assessment method according to claim 1, characterized in that: When the adjustment state value of any type of single energy storage mode does not meet the requirements, it is determined that the state evaluation result of the hybrid energy storage device is abnormal.

7. The hybrid energy storage device state assessment method according to claim 1, characterized in that: The method for determining the state assessment demand of the energy storage mode is: Determining adjustment durations of different historical adjustment times based on adjustment data of different historical adjustment times of the energy storage mode, and determining weight values of different historical adjustment times in combination with energy storage adjustment depths of different historical adjustment times; The state assessment demand of the energy storage mode is determined by the historical adjustment times of the energy storage mode and the weight values of different historical adjustment times.

8. The hybrid energy storage device state assessment method according to claim 1, characterized in that: When the state assessment demand of the energy storage mode using multiple forms of energy storage modes for energy storage regulation meets the requirement, the energy storage mode using multiple forms of energy storage modes for energy storage regulation is determined to be the screening collaborative energy storage regulation mode.

9. A hybrid energy storage device, using a hybrid energy storage device state assessment method according to any one of claims 1 to 8, characterized in that: Specifically include: Regulation status evaluation module, regulation status value evaluation module, collaborative energy storage screening module, evaluation result output module; The regulation state evaluation module is responsible for determining whether the regulation state of the hybrid energy storage device meets the requirements based on the demand response deviations and power quality of different dimensions of the hybrid energy storage device under different historical energy storage regulation times; The regulation state value evaluation module is responsible for taking the historical energy storage regulation times of any energy storage mode as a single energy storage regulation times, and determining whether the regulation state values of different types of single energy storage modes meet the requirements based on the demand response deviations and power quality of different dimensions of the single energy storage regulation times; The collaborative energy storage screening module is responsible for determining the historical adjustment times of different types of energy storage modes based on the historical energy storage adjustment data, and performing status assessment demand of different types of energy storage modes and screening collaborative energy storage adjustment modes in combination with the adjustment data of different historical adjustment times; The evaluation result output module is responsible for determining the adjustment state value of different screening collaborative energy storage adjustment modes based on the similarity of energy storage adjustment curves of different energy storage modes in different operating ranges, and determining the state evaluation result of the hybrid energy storage device in combination with the state evaluation requirements of different types of energy storage modes and the adjustment state values of different types of single energy storage modes.

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