A synchronous recording system for cluster energy storage battery information

Abstract

The present invention provides a synchronous recording system for cluster energy storage battery information, the system includes a data acquisition module, a data synchronization module, a data verification module, a data processing module and a first storage; the data acquisition module acquires the measurement data of all cluster energy storage batteries; the data synchronization module calculates the amplitude and phase of the fundamental wave of the measurement data and determines the time coordinate of each of the measurement data; the data verification module verifies the authenticity of the measurement data and whether there is an abnormality; the data processing module is used to classify the measurement data and add identifications, obtain processed data, and store the processed data in the first storage. Compared with the prior art, after the measurement data of the cluster energy storage batteries are synchronized, verified and classified, they are stored in the storage, and the needs of multiple subsequent application scenarios can be met without reclassification, and the call is more convenient.

Description

Technical Field

[0001] The present invention relates to the field of data recording, and in particular to a synchronous recording system for cluster energy storage battery information. Background Art

[0002] Energy storage batteries mainly refer to batteries used in solar power generation equipment, wind power generation equipment and renewable energy storage. In actual use, obtaining and synchronously recording the battery status of cluster energy storage is necessary for the stable operation of the power system.

[0003] Although traditional synchronous recording technology synchronizes data during use, the synchronized data cannot be fully verified to determine whether there are any abnormalities in the changing trends of the battery voltage data of each energy storage group. On the other hand, the existing technology relies on the cluster energy storage operation platform, and the synchronized data is stored in the platform. This means that in subsequent use, these data need to be reclassified and acquired, and the data utilization efficiency is low. Summary of the invention

[0004] The present invention provides a synchronous recording system for cluster energy storage battery information to solve the technical problem that the synchronized data in the prior art cannot be fully verified.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a synchronous recording system for cluster energy storage battery information, including a data acquisition module, a data synchronization module, a data verification module, a data processing module and a first storage;

[0006] The data acquisition module is used to acquire measurement data of all cluster energy storage batteries;

[0007] The data synchronization module includes a synchronized phasor measurement unit, which is used to calculate the amplitude and phase of the fundamental wave of each of the measurement data and determine the time coordinate of each of the measurement data to achieve synchronization of each of the measurement data;

[0008] The data verification module is used to verify the authenticity of the synchronized measurement data and whether there are any anomalies;

[0009] The data processing module is used to classify the verified measurement data according to the energy storage group, add identification, obtain processed data, and store the processed data in the first storage.

[0010] As a preferred solution, the synchronized phasor measurement unit includes a filtering subunit, a GPS subunit, a sampling pulse generation subunit and an A / D conversion subunit;

[0011] The filtering subunit is used to filter out harmonic interference in the measurement data of all the batteries;

[0012] The GPS subunit is used to generate second pulses;

[0013] The sampling pulse generating subunit generates a synchronous sampling pulse based on the second pulse;

[0014] The A / D conversion subunit performs analog-to-digital conversion on the measurement data after filtering out harmonic interference through the synchronous sampling pulse to obtain sampling data, and sends the sampling data to the microprocessor;

[0015] The microprocessor is used to perform Fourier transform on the sampled data, obtain the amplitude and phase of the fundamental wave of each of the measurement data, and determine the time coordinate of each of the measurement data.

[0016] As a preferred solution, the data verification module includes a first judgment unit and a second judgment unit;

[0017] The data verification module is used to verify the authenticity of the synchronized measurement data and whether there are any anomalies, specifically:

[0018] The first judgment unit judges whether there is a voltage mutation in the synchronized measurement data, and when there is a voltage mutation, judges that the synchronized measurement data is false data; otherwise, judges that the synchronized measurement data is true data;

[0019] The second judgment unit compares and analyzes the synchronized measurement data and a preset voltage variation amplitude per unit time, and determines whether an abnormality exists according to the comparison and analysis result.

[0020] As a preferred solution, the data verification module further includes a determination receiving unit, a data sending unit and an acquisition driving unit; wherein,

[0021] The determination receiving unit is used to send a sending instruction to the data sending unit when it is determined that the synchronized measurement data is verified data, so that the data sending unit responds to the sending instruction and sends the verified data to the data processing module; wherein the verified data is real data and there is no abnormal measurement data;

[0022] Otherwise, a re-acquisition instruction is sent to the acquisition drive unit, so that the acquisition drive unit responds to the re-acquisition instruction and controls the data acquisition module to re-acquire the measurement data of the battery.

[0023] As a preferred solution, the data processing module includes a classification unit, a first identification unit and a second identification unit;

[0024] The data processing module is used to classify the verified measurement data according to the energy storage group, add labels, and obtain processed data, specifically:

[0025] The classification unit is used to classify the verified measurement data into several categories according to the energy storage groups; wherein each of the energy storage groups corresponds to a category of the measurement data one by one;

[0026] The first identification unit is used to add a classification identification corresponding to the energy storage group to each category of measurement data;

[0027] The second identification unit is used to add time sequence identification to the measurement data of each category, so as to obtain the processed data.

[0028] As a preferred solution, the data acquisition module is used to acquire the measurement data of all batteries, specifically:

[0029] The data acquisition module collects the status data of all batteries, and converts the status data into an AC signal through an energy storage converter to obtain the measurement data.

[0030] As a preferred solution, the data processing module is further used to store the processed data into the cluster energy storage operation platform;

[0031] The synchronous recording system further comprises a communication transmission module and a data retrieval module; wherein the communication transmission module is connected to the data processing module and the data retrieval module; and the data retrieval module is connected to the first storage;

[0032] The data retrieval module is used to receive and respond to the retrieval instruction of the communication transmission module, and call the processed measurement data from the first storage.

[0033] As a preferred solution, the data acquisition module is connected to the data synchronization module and the data verification module; the data synchronization module is connected to the data processing module and the data verification module; and the data processing module is connected to the first storage.

[0034] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0035] The embodiment of the present invention provides a synchronous recording system for cluster energy storage battery information, the system includes a data acquisition module, a data synchronization module, a data verification module, a data processing module and a first storage; the data acquisition module is used to obtain the measurement data of all cluster energy storage batteries; the data synchronization module includes a synchronous phasor measurement unit, the synchronous phasor measurement unit is used to calculate the amplitude and phase of the fundamental wave of each of the measurement data, and determine the time coordinate of each of the measurement data to achieve synchronization of each of the measurement data; the data verification module is used to verify the authenticity of the synchronized measurement data and whether there is an abnormality; the data processing module is used to classify the verified measurement data according to the energy storage group, add an identifier, obtain the processed data, and store the processed data in the first storage. Compared with the prior art, after the measurement data of the cluster energy storage battery is synchronized, verified and classified, it is stored in the first storage, and the needs of multiple subsequent application scenarios such as analysis, calculation, evaluation or construction of scheduling schemes can be met without reclassification, and it is more convenient in subsequent calls; in the process of synchronous recording, the measurement data is verified for authenticity and abnormality, which improves the quality of synchronized data.

[0036] Furthermore, the data is classified, and classification identifiers and time sequence identifiers are added to facilitate classified storage. At the same time, in the subsequent call process, the measurement data of each energy storage group in different time periods can be found more efficiently, which improves the orderliness of data storage and the efficiency of subsequent calls. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 : A structural diagram of an embodiment of a system for synchronously recording cluster energy storage battery information provided by the present invention.

[0038] Figure 2 : A structural schematic diagram of an embodiment of a synchronized phasor measurement unit provided by the present invention.

[0039] Figure 3 : A structural diagram of an embodiment of the data verification module provided by the present invention.

[0040] Figure 4 : A structural diagram of an embodiment of a data processing module provided by the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment one:

[0043] Please refer to Figure 1 , Figure 1 A synchronous recording system for cluster energy storage battery information provided by an embodiment of the present invention includes a data acquisition module 100 , a data synchronization module 200 , a data verification module 300 , a data processing module 400 and a first storage 500 .

[0044] As an implementation of this embodiment, the data acquisition module 100 is connected to the data synchronization module 200 and the data verification module 300 ; the data synchronization module 200 is connected to the data processing module 400 and the data verification module 300 ; the data processing module 400 is connected to the first storage 500 .

[0045] The data acquisition module 100 is used to acquire measurement data of all cluster energy storage batteries.

[0046] In this embodiment, the data acquisition module 100 is preferably implemented by a battery management system (BMS), specifically: the data acquisition module 100 collects the status data of all batteries. And, all the status data are converted into AC signals through an energy storage converter (the energy storage converter includes a current transformer and a voltage transformer) to obtain the measurement data.

[0047] The data synchronization module 200 includes a synchronized phasor measurement unit 210, and the synchronized phasor measurement unit 210 is used to calculate the amplitude and phase of the fundamental wave of each of the measurement data and determine the time coordinate of each of the measurement data to achieve synchronization of each of the measurement data.

[0048] Further, the synchronized phasor measurement unit 210 refers to Figure 2 , including a filtering subunit, a GPS subunit, a sampling pulse generating subunit and an A / D conversion subunit; wherein,

[0049] The filtering subunit is used to filter out harmonic interference in the measurement data of all the batteries and screen out invalid information.

[0050] The GPS subunit is used to generate a second pulse, and the second pulse is 1PPS, that is, one pulse is generated per second.

[0051] The sampling pulse generating subunit generates a synchronous sampling pulse based on the second pulse, so that each measurement data corresponds to a global time coordinate.

[0052] The A / D conversion subunit performs analog-to-digital conversion on the measurement data from which harmonic interference has been filtered out through the synchronous sampling pulse, obtains sampling data, and sends the sampling data to the microprocessor.

[0053] The microprocessor is used to perform digital Fourier transform on the sampled data, obtain the amplitude and phase of the fundamental wave of each measurement data, and determine the time coordinate of each measurement data, and add the corresponding time coordinate to each measurement data, so that the measurement data measured at different locations have a consistent time coordinate system.

[0054] The data verification module 300 is used to verify the authenticity of the synchronized measurement data and whether there is any anomaly.

[0055] As a preferred embodiment, refer to Figure 3 , the data verification module 300 includes a first judgment unit 310 and a second judgment unit 320;

[0056] The data verification module 300 is used to verify the authenticity of the synchronized measurement data and whether there are any anomalies, specifically:

[0057] The first judgment unit 310 judges whether there is a voltage mutation in the synchronized measurement data. When there is a voltage mutation, the synchronized measurement data is judged to be false data; otherwise, the synchronized measurement data is judged to be true data.

[0058] As an example of this embodiment, under normal circumstances, when the battery is in a charging state or a discharging state, its voltage will always tend to rise or tend to fall, and it is impossible to suddenly change in the opposite direction in the middle, that is, a voltage mutation. On the other hand, the voltage mutation also includes a repetitive step state. If the above phenomenon occurs, the data is judged to be untrue, and the output judgment information is "error".

[0059] The second judgment unit 320 compares and analyzes the synchronized measurement data with a preset voltage variation amplitude per unit time, and determines whether an abnormality exists according to the comparison and analysis result.

[0060] As an example of this embodiment, the voltage change amplitude per unit time of the battery in different stages can be compared to determine whether there is an abnormality. When the battery is charged and discharged, the voltage change can usually be divided into three stages. Taking the discharge process as an example, in the early stage of discharge, the voltage drops sharply. When it drops to a certain value, the voltage begins to drop slowly and enters the middle stage of discharge. When it approaches the late stage of discharge, the battery will drop rapidly in a very short time, and the voltage drops to a certain value and stops discharging. Correspondingly, when the battery is charged, there will also be three corresponding stages. Therefore, by comparing the voltage change amplitude per unit time of the battery in each stage, and judging with the standard value, the size of the deviation can be confirmed. When the deviation is greater than a preset value, it can be determined as data abnormality.

[0061] Furthermore, the data verification module 300 further includes a determination receiving unit 330, a data sending unit 340 and an acquisition driving unit 350; wherein,

[0062] The determination receiving unit 330 is used to send a sending instruction to the data sending unit 340 when it is determined that the synchronized measurement data is verified data, so that the data sending unit 340 responds to the sending instruction and sends the verified data to the data processing module 400; wherein the verified data is real data and there is no abnormal measurement data (that is, it needs to pass both authenticity verification and abnormality verification).

[0063] Otherwise (when one of the authenticity verification and the abnormality verification fails), a re-acquisition instruction is sent to the acquisition drive unit 350, so that the acquisition drive unit 350 responds to the re-acquisition instruction and controls the data acquisition module 100 to re-acquire the measurement data of the battery.

[0064] The first judgment unit 310 is connected to the second judgment unit 320 ; the first judgment unit 310 and the second judgment unit 320 are both connected to the judgment receiving unit 330 ; the judgment unit is also connected to the data sending unit 340 and the acquisition driving unit 350 at the same time.

[0065] The data processing module 400 is used to classify the verified measurement data according to the energy storage group, add identification, obtain processed data, and store the processed data in the first storage 500. It is also used to store the processed data in the cluster energy storage operation platform.

[0066] Further, in this embodiment, referring to Figure 4 , the data processing module 400 includes a classification unit 410, a first identification unit 420, a second identification unit 430 and a data compression unit 440;

[0067] The data processing module 400 is used to classify the verified measurement data according to the energy storage group, add labels, and obtain processed data, specifically:

[0068] The classification unit 410 is used to classify the verified measurement data into several categories according to the energy storage group; wherein each of the energy storage groups corresponds to a category of the measurement data one by one;

[0069] The first identification unit 420 is used to add a classification identification corresponding to the energy storage group to each category of measurement data. By classifying the measurement data and adding the classification identification, the data can be classified and stored to facilitate subsequent extraction and use of the data.

[0070] The second identification unit 430 is used to add a time sequence identification to the measurement data of each category, thereby obtaining the processed data. By adding the time sequence identification, the measurement data of each energy storage group at the same time, or the measurement data of the same energy storage group at different times, can be quickly determined to avoid generating erroneous data in subsequent use.

[0071] The data compression unit 440 is used to compress the processed data.

[0072] Preferably, the synchronous recording system further comprises a communication transmission module 600 and a data retrieval module 700; wherein the communication transmission module 600 is connected to the data processing module 400 and the data retrieval module 700; the data retrieval module 700 is connected to the first storage 500;

[0073] The data retrieval module 700 is used to receive and respond to the retrieval instruction of the communication transmission module 600, and call the processed measurement data from the first storage 500. On the other hand, the processed measurement data can also be called from the cluster energy storage battery operation platform. Different storage addresses can meet the flexible data recording requirements in different scenarios.

[0074] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0075] The embodiment of the present invention provides a synchronous recording system for cluster energy storage battery information, the system includes a data acquisition module, a data synchronization module, a data verification module, a data processing module and a first storage; the data acquisition module is used to obtain the measurement data of all cluster energy storage batteries; the data synchronization module includes a synchronous phasor measurement unit, the synchronous phasor measurement unit is used to calculate the amplitude and phase of the fundamental wave of each of the measurement data, and determine the time coordinate of each of the measurement data to achieve synchronization of each of the measurement data; the data verification module is used to verify the authenticity of the synchronized measurement data and whether there is an abnormality; the data processing module is used to classify the verified measurement data according to the energy storage group, add an identifier, obtain the processed data, and store the processed data in the first storage. Compared with the prior art, after the measurement data of the cluster energy storage battery is synchronized, verified and classified, it is stored in the first storage, and the needs of multiple subsequent application scenarios such as analysis, calculation, evaluation or construction of scheduling schemes can be met without reclassification, and it is more convenient in subsequent calls; in the process of synchronous recording, the measurement data is verified for authenticity and abnormality, which improves the quality of synchronized data.

[0076] Furthermore, the data is classified, and classification identifiers and time sequence identifiers are added to facilitate classified storage. At the same time, in the subsequent call process, the measurement data of each energy storage group in different time periods can be found more efficiently, which improves the orderliness of data storage and the efficiency of subsequent calls.

[0077] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A synchronous recording system for cluster energy storage battery information, It is characterized in that It includes a data acquisition module, a data synchronization module, a data verification module, a data processing module and a first storage; The data acquisition module is used to obtain measurement data of all cluster energy storage batteries; The data synchronization module includes a synchronized phasor measurement unit, which is used to calculate the amplitude and phase of the fundamental wave of each of the measurement data and determine the time coordinate of each of the measurement data to achieve synchronization of each of the measurement data; The data verification module is used to verify the authenticity of the synchronized measurement data and whether there are any anomalies; The data processing module is used to classify the verified measurement data according to the energy storage group, add identification, obtain processed data, and store the processed data in the first storage; The synchronized phasor measurement unit includes a filtering subunit, a GPS subunit, a sampling pulse generating subunit and an A / D conversion subunit; The filtering subunit is used to filter out harmonic interference in the measurement data of all cluster energy storage batteries; The GPS subunit is used to generate second pulses; The sampling pulse generating subunit generates a synchronous sampling pulse based on the second pulse; The A / D conversion subunit performs analog-to-digital conversion on the measurement data after filtering out harmonic interference through the synchronous sampling pulse to obtain sampling data, and sends the sampling data to the microprocessor; The microprocessor is used to perform Fourier transform on the sampled data, obtain the amplitude and phase of the fundamental wave of each of the measurement data, and determine the time coordinate of each of the measurement data; The data verification module includes a first judgment unit and a second judgment unit; The data verification module is used to verify the authenticity of the synchronized measurement data and whether there are any anomalies, specifically: The first judgment unit judges whether there is a voltage mutation in the synchronized measurement data, and when there is a voltage mutation, judges that the synchronized measurement data is false data; otherwise, judges that the synchronized measurement data is true data; The second judgment unit compares and analyzes the synchronized measurement data and a preset voltage variation amplitude per unit time, and determines whether an abnormality exists according to the comparison and analysis result.

2. A synchronous recording system for cluster energy storage battery information as claimed in claim 1, It is characterized in that The data verification module also includes a determination receiving unit, a data sending unit and an acquisition driving unit; wherein, The determination receiving unit is used to send a sending instruction to the data sending unit when it is determined that the synchronized measurement data is verified data, so that the data sending unit responds to the sending instruction and sends the verified data to the data processing module; wherein the verified data is real data and there is no abnormal measurement data; Otherwise, a re-acquisition instruction is sent to the acquisition drive unit, so that the acquisition drive unit responds to the re-acquisition instruction and controls the data acquisition module to re-acquire the measurement data of the battery.

3. A synchronous recording system for cluster energy storage battery information as claimed in claim 1, It is characterized in that The data processing module includes a classification unit, a first identification unit and a second identification unit; The data processing module is used to classify the verified measurement data according to the energy storage group, add labels, and obtain processed data, specifically: The classification unit is used to classify the verified measurement data into several categories according to the energy storage groups; wherein each of the energy storage groups corresponds to a category of the measurement data one by one; The first identification unit is used to add a classification identification corresponding to the energy storage group to each category of measurement data; The second identification unit is used to add time sequence identification to the measurement data of each category, so as to obtain the processed data.

4. A synchronous recording system for cluster energy storage battery information according to any one of claims 1 to 3, It is characterized in that The data acquisition module is used to acquire the measurement data of all batteries, specifically: The data acquisition module collects the status data of all batteries, and converts the status data into an AC signal through an energy storage converter to obtain the measurement data.

5. A synchronous recording system for cluster energy storage battery information according to any one of claims 1 to 3, It is characterized in that The data processing module is also used to store the processed data into the cluster energy storage operation platform; The synchronous recording system further comprises a communication transmission module and a data retrieval module; wherein the communication transmission module is connected to the data processing module and the data retrieval module; and the data retrieval module is connected to the first storage; The data retrieval module is used to receive and respond to the retrieval instruction of the communication transmission module, and call the processed measurement data from the first storage.

6. A synchronous recording system for cluster energy storage battery information according to any one of claim 5, It is characterized in that The data acquisition module is connected to the data synchronization module and the data verification module; the data synchronization module is connected to the data processing module and the data verification module; the data processing module is connected to the first storage.

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