Distributed energy adaptive access method and system

Abstract

The invention is suitable for the technical field of distributed energy, and relates to a distributed energy adaptive access method and system, and the method comprises the steps: S10, collecting the parameters of distributed power supply equipment, and building a parameter comparison table; s20, screening parameter items, and determining characteristic parameters of the distributed power supply equipment; s30, performing data analysis through a data acquisition analysis and operation and maintenance system, calculating similarity between parameters and various devices, and establishing a parameter feature library; s40, the data acquisition analysis and operation and maintenance system pushes the parameter feature library to the distributed power supply access unit through the data acquisition terminal; s50, summarizing the matched data by the data acquisition analysis and operation and maintenance system, recalculating the similarity of the feature parameters, and updating the parameter feature library; s60, when the matching in the step S40 fails, the parameter feature library is re-issued to the distributed power supply access unit; and S70, repeating the steps S40 to S60 until the matching is successful. According to the invention, the access efficiency of the distributed energy is improved, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of distributed energy, and particularly relates to a distributed energy adaptive access method and system. Background Art

[0002] The access of distributed power sources, such as photovoltaic and energy storage systems, has become a key part of the current energy structure transformation and the construction of a new power system. In order to support the orderly access and consumption of distributed power sources, grid companies and relevant enterprise associations have formulated equipment standards for distributed power source access units. The distributed power source access unit can monitor distributed photovoltaic inverters and circuit breakers, and has functions such as communication protocol conversion, data acquisition, power quality monitoring, remote / local control, etc., and supports the acquisition and monitoring of equipment such as energy storage converters. The distributed power source access unit accesses the new power system through a data acquisition terminal upwards and supports the access of photovoltaic inverters and energy storage systems downwards, so as to realize the visibility, measurability, adjustability and controllability of distributed energy.

[0003] In the prior art, the access of distributed energy is usually realized by manually setting the files of inverters and converters. Since there are many inverter manufacturers and their models are diverse, it is very demanding for on-site maintenance personnel to accurately identify the inverter type. Especially for OEM manufacturers, it often takes a lot of debugging time. Its main disadvantages are extremely low intelligence level, high maintenance cost and low access efficiency. The patent application with the publication number CN119402352A provides an access method for an inverter. The method includes: reading first real-time communication configuration information from the characteristic register of the inverter according to the original communication configuration information corresponding to the preset interface in the inverter file; if the reading of the first real-time communication configuration information is successful, replacing the original communication configuration information corresponding to the preset interface with the first real-time communication configuration information; if the reading of the first real-time communication configuration information fails, reading second real-time communication configuration information from the characteristic register of the inverter according to the candidate communication configuration information; if the reading of the second real-time communication configuration information is successful, replacing the original communication configuration information corresponding to the preset interface with the second real-time communication configuration information. This patent application also realizes access through the inverter file and has the same drawbacks as the prior art.

[0004] Therefore, how to provide a distributed energy access method with high access efficiency and low operation and maintenance cost is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a distributed energy adaptive access method to solve the problems of low efficiency and high cost of the distributed energy access method in the prior art; in addition, the present invention also provides a distributed energy adaptive access system.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a method for adaptively accessing distributed energy, including the following steps:

[0008] S10. Summarize the parameters of distributed power generation equipment and establish a parameter comparison table; S20. Screen parameter items to determine the characteristic parameters of distributed power generation equipment; S30. Perform data analysis through a data acquisition, analysis, and operation and maintenance system, calculate the similarity between parameters and various devices, and establish a parameter feature library; S40. The data acquisition, analysis, and operation and maintenance system pushes the parameter feature library to the distributed power access unit through a data acquisition terminal; S50. The data acquisition, analysis, and operation and maintenance system summarizes the matched data, recalculates the similarity of characteristic parameters, and updates the parameter feature library; S60. When the matching in step S40 fails, the parameter feature library is redelivered to the distributed power access unit; S70. Repeat steps S40 to S60 until the matching is successful.

[0009] Further, in step S10, the parameters of the distributed power generation equipment include the communication protocol of the photovoltaic inverter, the communication protocol of the energy storage converter, the register address, and the value range.

[0010] Further, in step S20, the parameter types include fixed parameters, regularly changing parameters, and irregularly variable parameters.

[0011] Further, in step S40, the steps of connecting the distributed power access unit using a Bluetooth operation and maintenance APP are as follows:

[0012] S401. The operation and maintenance personnel locally connect the distributed power access unit through the Bluetooth operation and maintenance APP;

[0013] S402. The operation and maintenance personnel start debugging;

[0014] S403. The Bluetooth operation and maintenance APP sends a debugging start command to the distributed power access unit;

[0015] S404. The distributed power access unit adjusts the adaptive priority according to the start debugging command parameters, judges the debugging parameters, and if there are any, matches according to the debugging parameters first;

[0016] S405. The distributed power access unit starts matching and synchronously and cyclically receives 4G stick data. If the 4G stick data is received, the matching degree between the 4G stick data and the characteristic parameters is judged. If no data is received, the characteristic parameter library is used to cyclically send commands, and the matching degree with the characteristic parameters is judged according to the received data. When there is a match, the data is pushed to the data acquisition terminal and uploaded to the data acquisition analysis and operation and maintenance system. When the matching degree is close to 100%, an equipment file is automatically generated.

[0017] S406. The Bluetooth operation and maintenance APP reads the inverter file at a set interval until it times out or returns the file.

[0018] Further, in the step S40, the steps of the data acquisition analysis and operation and maintenance system remotely connecting to the distributed power access unit through the data acquisition terminal are as follows:

[0019] S411. The operation and maintenance personnel remotely connect to the distributed power access unit through the data acquisition terminal.

[0020] S412. The operation and maintenance personnel start debugging.

[0021] S413. The operation and maintenance personnel send a debugging start command to the distributed power access unit.

[0022] S414. The distributed power access unit adjusts the adaptive priority according to the start debugging command parameters, judges the debugging parameters. If there are any, match according to the debugging parameters first.

[0023] S415. The distributed power access unit starts matching and synchronously and cyclically receives 4G stick data. If the 4G stick data is received, the matching degree between the 4G stick data and the characteristic parameters is judged. If no data is received, the characteristic parameter library is used to cyclically send commands, and the matching degree with the characteristic parameters is judged according to the received data. When there is a match, the data is pushed to the data acquisition terminal and uploaded to the data acquisition analysis and operation and maintenance system. When the matching degree is close to 100%, an equipment file is automatically generated.

[0024] S416. The distributed power access unit reports the inverter file to the data acquisition terminal.

[0025] Further, in the step S402 and the step S412, the debugging parameters include selecting the inverter protocol, inputting the inverter address, and selecting the inverter communication parameters.

[0026] Further, in the step S404 and the step S414, if the user selects the inverter protocol, the current inverter protocol is preferentially matched, the other protocol IDs of the current brand are sub-optimally matched, and if the match fails, other protocols are matched in the default order.

[0027] Further, if the user inputs the inverter address, the current address is preferentially matched; otherwise, matching is performed in the default order.

[0028] Further, if the user selects the inverter communication parameters, the current communication parameters are preferentially used for matching; otherwise, matching is performed according to the general default communication parameters or the communication parameters of the specified brand inverter.

[0029] In a second aspect, the present invention also provides a system adopting the above method, including:

[0030] A data acquisition, analysis and operation and maintenance system, which is used for data acquisition and analysis, similarity calculation, and management of the parameter feature library;

[0031] A data acquisition terminal, which is used for managing the distributed power access unit to realize data acquisition and remote operation and maintenance;

[0032] An operation and maintenance APP, which is used for local operation and maintenance of the distributed power access unit;

[0033] A distributed power access unit, which is used for accessing photovoltaic inverters and energy storage converters;

[0034] The data acquisition, analysis and operation and maintenance system is respectively communicatively connected to the data acquisition terminal and the operation and maintenance APP, and the distributed power access unit is respectively communicatively connected to the data acquisition terminal and the operation and maintenance APP.

[0035] Compared with the prior art, the distributed energy adaptive access method and system provided by the present invention have at least the following beneficial effects:

[0036] In the prior art, the access of distributed energy is usually realized by manually setting the files of inverters and converters. Since there are many inverter manufacturers and various models, it is very demanding for on-site operation and maintenance personnel to accurately identify the inverter type. Especially for OEM manufacturers, a large amount of debugging time is often consumed. Its main disadvantages are extremely low intelligence level, high maintenance cost, and low access efficiency. The process of the present invention is simple and the operation is convenient. Parameters such as the communication protocol, register address, and value range of the photovoltaic inverter and the energy storage converter are selected, and characteristic parameters are extracted through similarity calculation for automatically matching the types of the inverter and the converter, so as to realize the access of the photovoltaic inverter and the energy storage converter, improve the intelligent level of operation and maintenance, reduce the operation and maintenance cost, and greatly improve the access efficiency of distributed energy compared with the traditional method of manually setting files. Description of the Drawings

[0037] To more clearly illustrate the solution of the present invention, the following will give a brief introduction to the figures required in the description of the embodiments. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 It is a flowchart of a distributed energy adaptive access method provided by an embodiment of the present invention;

[0039] Figure 2 It is a schematic structural diagram of a distributed energy adaptive access system provided by an embodiment of the present invention. Specific embodiments

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, which is only for convenience of description and cannot be construed as a limitation to the technical solution of the present invention.

[0041] In addition, the terms "comprising" and "having" and any variations thereof in the specification and claims of the present invention and the above accompanying drawing descriptions are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the specification and claims of the present invention or the above accompanying drawing descriptions are used to distinguish different objects and are not used to describe a specific order. In the specification and claims of the present invention and the above accompanying drawing descriptions, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it can be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

[0042] Furthermore, the mention of "embodiments" in this article means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0043] The present invention provides a method for adaptively accessing distributed energy, which is applied to the process of accessing and consuming distributed power sources. The method for adaptively accessing distributed energy includes the following steps:

[0044] S10. Summarize the parameters of distributed power source devices and establish a parameter comparison table; S20. Screen parameter items to determine the characteristic parameters of distributed power source devices; S30. Perform data analysis through a data acquisition, analysis, and operation and maintenance system, calculate the similarity of parameters with various devices, and establish a parameter characteristic library; S40. The data acquisition, analysis, and operation and maintenance system pushes the parameter characteristic library to the distributed power source access unit through a data acquisition terminal; S50. The data acquisition, analysis, and operation and maintenance system summarizes the matched data, recalculates the similarity of characteristic parameters, and updates the parameter characteristic library; S60. When the matching in step S40 fails, reissue the parameter characteristic library to the distributed power source access unit; S70. Repeat steps S40 to S60 until the matching is successful.

[0045] The present invention improves the access efficiency of distributed energy and reduces the operation and maintenance costs.

[0046] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0047] The present invention provides a method for adaptively accessing distributed energy, which is applied to the process of accessing and consuming distributed power sources. As Figure 1 shown, in this embodiment, the method for adaptively accessing distributed energy includes the following steps:

[0048] S10. Summarize various parameters of distributed power source devices, such as the communication protocols, register addresses, value ranges, etc. of photovoltaic inverters and energy storage converters, and establish a parameter comparison table.

[0049] S20. Screen parameter items according to types such as fixed parameters, regularly changing parameters, and irregularly variable parameters to determine the characteristic parameters of distributed power source devices.

[0050] S30. Perform data analysis through a data acquisition, analysis, and operation and maintenance system, calculate the similarity of parameters with various devices, and establish a parameter characteristic library.

[0051] S40. The data acquisition, analysis, and operation and maintenance system pushes the parameter characteristic library to the distributed power source access unit through a data acquisition terminal.

[0052] Specifically, in this embodiment, connecting the distributed power source access unit using a Bluetooth operation and maintenance APP includes the following steps:

[0053] S401. The operation and maintenance personnel locally connect the distributed power source access unit through the Bluetooth operation and maintenance APP;

[0054] S402. The operation and maintenance personnel start debugging and can select debugging parameters, such as selecting the inverter protocol, inputting the inverter address, selecting the inverter communication parameters, etc.;

[0055] S403. The Bluetooth operation and maintenance APP sends a debugging start command to the distributed power access unit;

[0056] S404. The distributed power access unit adjusts the adaptive priority according to the start debugging command parameters, judges the debugging parameters. If there are any, match them preferentially according to the debugging parameters. If the user selects the inverter protocol, preferentially match the current inverter protocol, and secondly match other protocol IDs of the current brand. If the matching fails, then match other protocols in the default order; if the user inputs the inverter address, preferentially match the current address, otherwise match in the default order; if the user selects the inverter communication parameters, preferentially match with the current communication parameters, otherwise match with the general default communication parameters or the communication parameters of the specified brand inverter;

[0057] S405. The distributed power access unit starts matching and synchronously and cyclically receives 4G stick data. If the 4G stick data is received, then judge the matching degree between the 4G stick data and the characteristic parameters; if no data is received, use the characteristic parameter library to cyclically send commands and judge the matching degree with the received data according to the received data; when matching, push the data to the data acquisition terminal and upload it to the data acquisition analysis and operation and maintenance system. When the matching degree is close to 100%, automatically generate a device file;

[0058] S406. The Bluetooth operation and maintenance APP reads the inverter file at a set interval until it times out or returns the file. Step S405 and step S406 are executed synchronously.

[0059] Furthermore, in this embodiment, the data acquisition analysis and operation and maintenance system remotely connects to the distributed unit through the data acquisition terminal to execute the following steps:

[0060] S411. The operation and maintenance personnel remotely connect to the distributed power access unit through the data acquisition terminal;

[0061] S412. The operation and maintenance personnel start debugging and can select debugging parameters, such as selecting the inverter protocol, inputting the inverter address, selecting the inverter communication parameters, etc.;

[0062] S413. The operation and maintenance personnel send a debugging start command to the distributed power access unit;

[0063] S414. The distributed power access unit adjusts the adaptive priority according to the start-up debugging command parameters, judges the debugging parameters. If there are any, it preferentially matches according to the debugging parameters. If the user selects the inverter protocol, it preferentially matches the current inverter protocol, and sub-optimally matches other protocol IDs of the current brand. If the matching fails, it matches other protocols in the default order. If the user inputs the inverter address, it preferentially matches the current address, otherwise it matches in the default order. If the user selects the inverter communication parameters, it preferentially matches with the current communication parameters, otherwise it matches with the general default communication parameters or the communication parameters of the specified brand inverter.

[0064] S415. The distributed power access unit starts the matching, synchronously and cyclically receives the 4G stick data. If the 4G stick data is received, it judges the matching degree between the 4G stick data and the characteristic parameters. If no data is received, it cyclically sends commands using the characteristic parameter library, and judges the matching degree with the characteristic parameters according to the received data. When matching, it pushes the data to the data acquisition terminal and uploads it to the data acquisition analysis and operation and maintenance system. When the matching degree is close to 100%, it automatically generates the device file.

[0065] S416. The distributed power access unit reports the inverter file to the data acquisition terminal.

[0066] S50. The data acquisition analysis and operation and maintenance system summarizes the matched data, recalculates the similarity of the characteristic parameters, and updates the parameter characteristic library.

[0067] S60. When the matching in step S405 and step S415 fails, the parameter characteristic library is reissued to the distributed power access unit.

[0068] S70. Repeat steps S40 to S60 until the matching is successful.

[0069] The present invention also provides a system adopting the method described in the above embodiment, which is applied to the access and consumption process of distributed power, and includes: a data acquisition analysis and operation and maintenance system, which is used for data acquisition and analysis, similarity calculation and management of the parameter characteristic library; a data acquisition terminal, which is used for managing the distributed power access unit to realize data acquisition and remote operation and maintenance; an operation and maintenance APP, which is used for local operation and maintenance of the distributed power access unit; a distributed power access unit, which is used for accessing photovoltaic inverters and energy storage converters. The data acquisition analysis and operation and maintenance system is respectively communicatively connected with the data acquisition terminal and the operation and maintenance APP, and the distributed power access unit is respectively communicatively connected with the data acquisition terminal and the operation and maintenance APP.

[0070] The distributed energy adaptive access method and system described in the above embodiments, compared with the prior art, in the prior art, the access of distributed energy is usually achieved by manually setting the files of inverters and converters. Since there are many inverter manufacturers and their models are various, it requires high requirements for on-site operation and maintenance personnel to accurately identify the inverter type. Especially for OEM manufacturers, it often takes a lot of debugging time. Its main disadvantages are extremely low intelligence level, high maintenance cost, and low access efficiency. The process of the present invention is simple and the operation is convenient. Parameters such as the communication protocol, register address, and value range of photovoltaic inverters and energy storage converters are selected, and characteristic parameters are extracted through similarity calculation for automatically matching the types of inverters and converters, thereby realizing the access of photovoltaic inverters and energy storage converters, improving the intelligent level of operation and maintenance, reducing the operation and maintenance cost, and compared with the traditional method of manually setting files, it can greatly improve the access efficiency of distributed energy.

[0071] Obviously, the embodiments described above are only the preferred embodiments of the present invention, rather than all the embodiments. The preferred embodiments of the present invention are given in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields is similarly within the scope of the patent protection of the present invention.

Claims

1. A distributed energy adaptive access method, characterized in that: The following steps are involved: S10, summarizing the parameters of the distributed power supply equipment and establishing a parameter comparison table; S20, screening parameter items to determine characteristic parameters of distributed power supply equipment; S30, perform data analysis through data collection and analysis and operation and maintenance system, calculate the similarity between parameters and multiple devices, and establish a parameter feature library; S40, the data acquisition analysis and operation and maintenance system pushes the parameter feature library to the distributed power access unit through the data acquisition terminal; S50, the data collection, analysis and operation and maintenance system aggregates the matched data, recalculates the feature parameter similarity, and updates the parameter feature library; S60, when the matching in step S40 fails, re-issuing the parameter feature library to the distributed power access unit; S70, repeat steps S40 to S60 until the match is successful.

2. A distributed energy adaptive access method according to claim 1, characterized in that: In the step S10, the parameters of the distributed power supply equipment include the communication protocol of the photovoltaic inverter, the communication protocol of the energy storage converter, the register address, and the value range.

3. A distributed energy adaptive access method according to claim 1, characterized in that: In step S20, the parameter types include fixed parameters, regularly changing parameters and irregularly variable parameters.

4. A distributed energy adaptive access method according to claim 1, characterized in that: In step S40, the steps of using the Bluetooth operation and maintenance APP to connect the distributed power access unit are as follows: S401, the operation and maintenance personnel locally connect to the distributed power access unit through the Bluetooth operation and maintenance APP; S402, the operation and maintenance personnel start debugging; S403, the Bluetooth operation and maintenance APP sends a debugging start command to the distributed power supply access unit; S404, the distributed power access unit adjusts the adaptive priority according to the startup debugging command parameters, determines the debugging parameters, and if there are any, matches them first according to the debugging parameters; S405, the distributed power access unit starts matching, synchronously and cyclically receives 4G stick data, and if 4G stick data is received, determines the matching degree between the 4G stick data and the characteristic parameters; If no data is received, the characteristic parameter library is used to send commands cyclically, and the matching degree with the characteristic parameters is determined according to the received data; When matching, the data is pushed to the data acquisition terminal and sent to the data acquisition analysis and operation and maintenance system. When the matching degree is close to 100%, the equipment file is automatically generated; S406. The Bluetooth operation and maintenance APP reads the inverter file at a set interval until it times out or returns to the file.

5. A distributed energy adaptive access method according to claim 4, characterized in that: In step S40, the steps of using the data acquisition analysis and operation and maintenance system to remotely connect to the distributed power access unit through the data acquisition terminal are as follows: S411, the operation and maintenance personnel remotely connect to the distributed power access unit through the data acquisition terminal; S412, operation and maintenance personnel start debugging; S413, the operation and maintenance personnel sends a debugging start command to the distributed power supply access unit; S414, the distributed power access unit adjusts the adaptive priority according to the startup debugging command parameters, determines the debugging parameters, and if there are any, matches them first according to the debugging parameters; S415, the distributed power access unit starts matching, synchronously and cyclically receives 4G stick data, and if 4G stick data is received, determines the matching degree between the 4G stick data and the characteristic parameters; If no data is received, the characteristic parameter library is used to send commands cyclically, and the matching degree with the characteristic parameters is determined according to the received data; When matching, the data is pushed to the data acquisition terminal and sent to the data acquisition analysis and operation and maintenance system. When the matching degree is close to 100%, the equipment file is automatically generated; S416. The distributed power supply access unit reports the inverter file to the data acquisition terminal.

6. A distributed energy adaptive access method according to claim 5, characterized in that: In step S402 and step S412, the debugging parameters include selecting an inverter protocol, inputting an inverter address, and selecting inverter communication parameters.

7. A distributed energy adaptive access method according to claim 5, characterized in that: In the step S404 and step S414, if the user selects the inverter protocol, the current inverter protocol is matched first, and other protocol IDs of the current brand are matched secondarily. If the match fails, other protocols are matched in the default order.

8. A distributed energy adaptive access method according to claim 7, characterized in that: If the user enters the inverter address, the current address will be matched first, otherwise it will be matched in the default order.

9. A distributed energy adaptive access method according to claim 7, characterized in that: If the user selects the inverter communication parameters, the current communication parameters will be used for matching first, otherwise the general default communication parameters or the communication parameters of the inverter of the specified brand will be used for matching.

10. A system using the method according to any one of claims 1 to 9, characterized in that: include: Data collection, analysis and operation and maintenance system, used for data collection and analysis, similarity calculation and parameter feature library management; Data acquisition terminal, used to manage distributed power access units, realize data acquisition and remote operation and maintenance; Operation and maintenance APP, used for local operation and maintenance of distributed power access units; Distributed power access unit, used to access photovoltaic inverters and energy storage converters; The data collection analysis and operation and maintenance system is respectively connected in communication with the data collection terminal and the operation and maintenance APP, and the distributed power supply access unit is respectively connected in communication with the data collection terminal and the operation and maintenance APP.

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