Substation Secondary Digital Design Method, Device and Storage Medium

Abstract

The present application discloses a secondary digital design method, device and storage medium for a substation, belonging to the technical field of substation design. The method includes: inputting engineering requirements into a knowledge base to determine whether there is a matching case in the knowledge base, where the engineering requirements include multiple design parameters; in response to the existence of a matching case in the knowledge base, determining the design scheme corresponding to the matching case as the first design scheme and outputting the first design scheme; in response to the non-existence of a matching case in the knowledge base, dividing the engineering requirements into multiple first modules according to the voltage level and regional location in the multiple design parameters; based on the knowledge base, performing weighted matching on the multiple first modules and outputting a second design scheme. This method can automatically complete the secondary digital design of the substation and improve work efficiency.

Description

Technical Field

[0001] This application relates to the technical field of substation design, and particularly relates to a secondary digital design method, device, and storage medium for a substation. Background Art

[0002] With the continuous development of the smart grid, the requirements for grid status information and its control and protection are becoming increasingly strict. Since smart substations replace conventional secondary circuits with communication networks and virtual digital information in the network replaces physical electrical signals, it is necessary to complete the co-design of physical circuits and virtual circuits, which poses higher requirements for secondary system design.

[0003] In related technologies, the secondary digital design of substations is usually carried out by using the method of manual analysis, that is, technicians conduct manual design based on existing design materials. However, there are a large number of complex different types of knowledge in the design process, such as formula-based knowledge, rule and fuzzy rule-based knowledge, and design example-based knowledge, etc., resulting in a large workload, low efficiency, and high error rate in the secondary design task. Summary of the Invention

[0004] In view of this, this application provides a secondary digital design method, device, and storage medium for a substation, which can automatically complete the secondary digital design of the substation and improve work efficiency.

[0005] Specifically, it includes the following technical solutions:

[0006] According to the first aspect of the embodiments of this application, a secondary digital design method for a substation is provided. The method includes:

[0007] Input engineering requirements into a knowledge base, and determine whether there is a matching case in the knowledge base, where the engineering requirements include multiple design parameters;

[0008] In response to the existence of a matching case in the knowledge base, determine the design scheme corresponding to the matching case as the first design scheme, and output the first design scheme;

[0009] In response to the non-existence of a matching case in the knowledge base, divide the engineering requirements into multiple first modules according to the voltage level and regional location in the multiple design parameters;

[0010] Based on the knowledge base, perform weighted matching on the multiple first modules, and output a second design scheme.

[0011] In some embodiments, before inputting the engineering requirements into the knowledge base, the method further includes:

[0012] Build the knowledge base, where the knowledge base includes a plurality of cases, the plurality of cases are obtained based on existing data, and each case includes the at least one design parameter.

[0013] In some embodiments, the inputting the engineering requirements into the knowledge base and determining whether there is a matching case in the knowledge base includes:

[0014] Based on the value and corresponding weight of each design parameter among the plurality of design parameters, obtain a plurality of first matching scores corresponding one by one to the cases in the knowledge base;

[0015] In response to at least one first matching score greater than or equal to a first threshold existing among the plurality of first matching scores, determine that there is a matching case in the knowledge base, where the first matching score of the matching case in the knowledge base is the highest score among the plurality of first matching scores.

[0016] In some embodiments, the first matching score is obtained according to the following calculation formula:

[0017]

[0018] In the formula: P is the first matching score; n is the number of design parameters; R is the matching degree of each design parameter, where the value of the matching degree is 1 or 0; I is the weight of each design parameter.

[0019] In some embodiments, the method further includes:

[0020] In response to at least one first case existing among the plurality of cases, divide each first case into a plurality of second modules according to the voltage level and regional location;

[0021] Wherein, the design parameters of the first case include voltage level and regional location.

[0022] In some implementations, the weighted matching of the plurality of first modules based on the knowledge base and outputting the second design scheme includes:

[0023] According to the plurality of second modules corresponding to each first case and the plurality of first modules, perform weighted matching on each first module to determine the second module matched by each first module;

[0024] Combine the second modules matched by each first module to obtain the second design scheme, and output the second design scheme.

[0025] In some embodiments, the performing weighted matching on each first module according to the plurality of second modules corresponding to each case and the plurality of first modules includes:

[0026] Based on the matching relationship between multiple second modules and multiple first modules corresponding to each first case, and the weight of each second module among the multiple second modules corresponding to each first case, at least one second matching score of each first module is obtained.

[0027] For any first module, in response to the existence of at least one second matching score greater than or equal to a second threshold among the at least one second matching score, determine the second module matched by the first module, where the second matching score of the second module matched by the first module is the highest score among the at least one second matching score.

[0028] In some embodiments, both the first design scheme and the second design scheme include a secondary schematic diagram, a wiring diagram, loop information, and cable information.

[0029] According to a second aspect of the embodiments of the present application, a substation secondary digital design device is provided. The device includes:

[0030] A determination module, configured to input engineering requirements into a knowledge base and determine whether there is a matching case in the knowledge base, where the engineering requirements include multiple design parameters;

[0031] A first output module, configured to, in response to the existence of a matching case in the knowledge base, determine the design scheme corresponding to the matching case as a first design scheme and output the first design scheme;

[0032] A division module, configured to, in response to the non-existence of a matching case in the knowledge base, divide the engineering requirements into multiple first modules according to the voltage level and regional location among the multiple design parameters included in the engineering requirements;

[0033] A second output module, configured to perform weighted matching on the multiple first modules based on the knowledge base and output a second design scheme.

[0034] According to a third aspect of the embodiments of the present application, a computer-readable storage medium is provided. The computer-readable storage medium contains at least one computer-readable instruction. When the computer-readable instruction is executed by a processor of an electronic device, the electronic device can execute the substation secondary digital design method as described in the above aspect.

[0035] The technical solutions provided by the embodiments of the present application may include the following beneficial effects:

[0036] The secondary digital design method for a substation provided by an embodiment of this application inputs engineering requirements into a knowledge base and determines whether there are cases in the knowledge base that match the engineering requirements. When it is determined that there are matching cases in the knowledge base, the design scheme corresponding to the case is directly output, that is, the first design scheme is output. When it is determined that there are no matching cases in the knowledge base, based on the voltage level parameter and regional location parameter among the multiple design parameters included in the engineering requirements, the engineering requirements are divided to obtain multiple first modules, and then, based on the knowledge base, weighted matching is performed on the multiple first modules, and then the second design scheme is output. This method can automatically complete the secondary digital design of the substation and improve work efficiency.

[0037] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0039] Figure 1 It is a flowchart of a method for a secondary digital design method for a substation provided by an embodiment of this application;

[0040] Figure 2 It is a flowchart of another secondary digital design method for a substation provided by an embodiment of this application;

[0041] Figure 3 It is a block diagram of a secondary digital design device provided by an embodiment of this application. Detailed Embodiments

[0042] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with this application. On the contrary, they are only examples of devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0043] With the continuous development of the smart grid, the requirements for grid status information and its control and protection are becoming increasingly strict. Smart substations replace conventional secondary circuits with communication networks, and virtual digital information in the network replaces physical electrical signals. It is necessary to complete the co-design of physical circuits and virtual circuits, which puts forward higher requirements for the design of secondary systems. At the same time, there is a large amount of complex knowledge of different types in the design process, such as formula-based knowledge, rule and fuzzy rule-based knowledge, and design example-based knowledge, etc.

[0044] To achieve the automatic output of the secondary digital design scheme of the substation, the embodiments of the present application provide a secondary digital design method for the substation. This secondary digital design method can be applied to computer devices, and its method flow chart is as Figure 1 shown. The method includes:

[0045] Step 101, input the project requirements into the knowledge base, and determine whether there is a matching case in the knowledge base, where the project requirements include multiple design parameters.

[0046] Step 102, in response to the existence of a matching case in the knowledge base, determine the design scheme corresponding to the matching case as the first design scheme, and output the first design scheme.

[0047] Step 103, in response to the non-existence of a matching case in the knowledge base, divide the project requirements into multiple first modules according to the voltage level and regional location in the multiple design parameters.

[0048] Step 104, based on the knowledge base, perform weighted matching on the multiple first modules, and output the second design scheme.

[0049] In some embodiments, before inputting the project requirements into the knowledge base, the method further includes:

[0050] Establish a knowledge base, where the knowledge base includes multiple cases. The multiple cases are obtained based on existing data, and each case includes at least one design parameter.

[0051] In some embodiments, inputting the project requirements into the knowledge base and determining whether there is a matching case in the knowledge base includes:

[0052] Based on the value and corresponding weight of each design parameter in the multiple design parameters, obtain multiple first matching scores corresponding one by one to the cases in the knowledge base;

[0053] In response to the existence of at least one first matching score greater than or equal to the first threshold among the multiple first matching scores, determine that there is a matching case in the knowledge base, where the first matching score of the matching case in the knowledge base is the highest score among the multiple first matching scores.

[0054] In some embodiments, the first matching score is obtained according to the following calculation formula:

[0055]

[0056] Where: P is the first matching score; n is the number of design parameters; R is the matching degree of each design parameter, where the value of the matching degree is 1 or 0; I is the weight of each design parameter.

[0057] In some embodiments, the method further includes:

[0058] In response to the existence of at least one first case among multiple cases, each first case is divided into multiple second modules according to the voltage level and regional location;

[0059] Wherein, the design parameters of the first case include the voltage level and regional location.

[0060] In some implementations, based on the knowledge base, weighted matching of multiple first modules is performed, and the output of the second design scheme includes:

[0061] According to the multiple second modules and multiple first modules corresponding to each first case, weighted matching is performed on each first module to determine the second module matched by each first module;

[0062] The second modules matched by each first module are combined to obtain a second design scheme, and the second design scheme is output.

[0063] In some embodiments, performing weighted matching on each first module according to the multiple second modules and multiple first modules corresponding to each case includes:

[0064] Based on the matching relationship between the multiple second modules and multiple first modules corresponding to each first case and the weight of each second module in the multiple second modules corresponding to each first case, at least one second matching score of each first module is obtained;

[0065] For any first module, in response to the existence of at least one second matching score greater than or equal to a second threshold among at least one second matching score, determine the second module matched by the first module, where the second matching score of the second module matched by the first module is the highest score among at least one second matching score.

[0066] In some embodiments, both the first design scheme and the second design scheme include a secondary schematic diagram, a wiring diagram, loop information, and cable information.

[0067] In summary, the substation secondary digital design method provided by the embodiments of the present application inputs engineering requirements into the knowledge base and determines whether there are cases in the knowledge base that match the engineering requirements. When it is determined that there are matching cases in the knowledge base, the design scheme corresponding to the case is directly output, that is, the first design scheme is output. When it is determined that there are no matching cases in the knowledge base, according to the voltage level parameter and regional location parameter among the multiple design parameters included in the engineering requirements, the engineering requirements are divided into multiple first modules, and then based on the knowledge base, weighted matching is performed on the multiple first modules, and then the second design scheme is output. This method can automatically complete the substation secondary digital design and improve work efficiency.

[0068] The embodiments of the present application provide a secondary digital design method for a power station. This substation secondary digital design method can be applied to a computer device, and its method flow chart is as Figure 2 shown. The method includes:

[0069] Step 201, establish a knowledge base.

[0070] Among them, the knowledge base includes multiple cases, the multiple cases are obtained based on existing data, and each case includes at least one design parameter.

[0071] Optionally, the multiple cases can be input into the computer device for storage in a manual input or scanning input manner to form a knowledge base.

[0072] Optionally, the design parameters include equipment type and layout method. For example, the equipment type can be a transformer, an instrument transformer, a protection and measurement integrated device for 35 kV, a protection and measurement integrated device for 110 kV, an integrated power supply system, etc.

[0073] Step 202, input the engineering requirements into the knowledge base and determine whether there are matching cases in the knowledge base.

[0074] Among them, the engineering requirements include multiple design parameters. Here, "multiple" means two or more in number.

[0075] This step specifically includes:

[0076] Step 2021, based on the value and corresponding weight of each design parameter among the multiple design parameters, obtain multiple first matching scores corresponding to the cases in the knowledge base.

[0077] Among them, the first matching score is obtained according to the following calculation formula:

[0078]

[0079] Where: P is the first matching score; n is the number of design parameters; R is the matching degree of each design parameter, where the value of the matching degree is 1 or 0; I is the weight of each design parameter.

[0080] It should be noted that the weight of each design parameter can be manually input by the designer.

[0081] Step 20211, in response to at least one first matching score among multiple first matching scores being greater than or equal to the first threshold, determine that there is a matching case in the knowledge base, where the first matching score of the matching case in the knowledge base is the highest score among the multiple first matching scores.

[0082] The first threshold here can be a default value. For example, the first threshold can be 0.8.

[0083] Step 203, in response to there being a matching case in the knowledge base, determine the design scheme corresponding to the matching case as the first design scheme and output the first design scheme.

[0084] Among them, the first design scheme includes a secondary schematic diagram, a wiring diagram, loop information, and cable information.

[0085] Step 204, in response to there being no matching case in the knowledge base, divide the engineering requirements into multiple first modules according to the voltage level and regional location among the multiple design parameters.

[0086] Since there is no matching case in the knowledge base, therefore, the engineering requirements can be divided into multiple first modules according to the voltage level and regional location among the multiple design parameters. For example, multiple first modules related to the voltage level, such as the 220kV module, 110kV module, 35kV module, and 400V module; multiple first modules related to the regional location, such as the main control building module, the pump house module, the main transformer module, etc.

[0087] It should be noted that when the design parameters include words related to the voltage level or words related to the regional location, the computer can automatically identify and divide the relevant parameters into a first module. For example, the current wiring form of 220kV and the future wiring form of 220kV can be automatically divided into the 220kV module.

[0088] Step 205, in response to there being at least one first case among multiple cases, divide each first case into multiple second modules according to the voltage level and regional location.

[0089] Among them, the design parameters of the first case include the voltage level and regional location.

[0090] Each first case is divided according to its voltage level and regional location, and multiple second modules corresponding to each case can be obtained.

[0091] Step 206: Based on the knowledge base, perform weighted matching on multiple first modules and output a second design solution.

[0092] This step specifically includes:

[0093] Step 2061: According to the multiple second modules and multiple first modules corresponding to each first case, perform weighted matching on each first module to determine the second module matched by each first module.

[0094] By performing weighted matching on each first module, a second module corresponding to the match of each first module can be found from multiple different first cases. That is to say, the second module matched by each first module can come from different cases.

[0095] Specifically, this step can be implemented in the following manner:

[0096] Step 20611: Based on the matching relationship between the multiple second modules and multiple first modules corresponding to each first case and the weight of each second module in the multiple second modules corresponding to each first case, obtain at least one second matching score for each first module.

[0097] Here, the matching relationship between the multiple second modules and multiple first modules corresponding to each first case is automatically obtained after step 205. In the implementation process, each second module of the first case is matched with multiple first modules one by one. If the second module and the first module are the same, it is determined that there is a matching relationship between the second module and the first module, and the matching value of the second module and the corresponding first module is 1.

[0098] The weight of each second module in the multiple second modules corresponding to each first case can be manually input by technicians.

[0099] The second matching score can be obtained in the following way: when the matching value of the second module and the corresponding first module is 1, multiply this matching value by the weight of this second module to obtain the second matching score.

[0100] Step 20612: For any first module, in response to at least one second matching score in the at least one second matching score being greater than or equal to a second threshold, determine the second module matched by the first module, where the second matching score of the second module matched by the first module is the highest score among the at least one second matching score.

[0101] The second threshold here can be a default value. For example, the second threshold can be 0.5.

[0102] Step 2062: Combine the second modules matched by each first module to obtain a second design solution, and output the second design solution.

[0103] Similarly, similar to the first design solution, the second design solution also includes a secondary schematic diagram, a wiring diagram, loop information, and cable information.

[0104] In summary, for the substation secondary digital design method provided in the embodiments of the present application, by inputting project requirements into the knowledge base, it is determined whether there are cases matching the project requirements in the knowledge base; when it is determined that there are matching cases in the knowledge base, directly output the design solution corresponding to the case, that is, output the first design solution. When it is determined that there are no matching cases in the knowledge base, according to the voltage level parameter and regional location parameter among the multiple design parameters included in the project requirements, the project requirements are divided into multiple first modules, and then based on the knowledge base, weighted matching is performed on the multiple first modules, and then the second design solution is output. This method can automatically complete the substation secondary digital design and improve work efficiency.

[0105] The embodiments of the present application provide a substation secondary digital design device, and its structural block diagram is as Figure 3 shown. This substation secondary digital design device can be implemented through software, hardware, or a combination of both. This substation secondary digital design device 300 may include:

[0106] A determination module 301, configured to input project requirements into the knowledge base and determine whether there are matching cases in the knowledge base, where the project requirements include multiple design parameters;

[0107] A first output module 302, configured to, in response to the existence of a matching case in the knowledge base, determine the design solution corresponding to the matching case as the first design solution and output the first design solution;

[0108] A first division module 303, configured to, in response to the non-existence of a matching case in the knowledge base, divide the project requirements into multiple first modules according to the voltage level and regional location among the multiple design parameters included in the project requirements;

[0109] A second output module 304, configured to perform weighted matching on the multiple first modules based on the knowledge base and output the second design solution.

[0110] Optionally, this substation secondary digital design device further includes:

[0111] A establishment module, configured to establish a knowledge base, where the knowledge base includes multiple cases, the multiple cases are obtained based on existing data, and each case includes at least one design parameter.

[0112] Optionally, the determining module 301 is specifically configured to:

[0113] The first matching score sub-module is configured to obtain a plurality of first matching scores corresponding to each case in the knowledge base based on the value of each design parameter among the plurality of design parameters and the corresponding weight;

[0114] The first determining sub-module; is configured to determine that there is a matching case in the knowledge base in response to at least one first matching score greater than or equal to the first threshold among the plurality of first matching scores, where the first matching score of the matching case in the knowledge base is the highest score among the plurality of first matching scores.

[0115] Optionally, the first matching score is obtained according to the following calculation formula:

[0116]

[0117] In the formula: P is the first matching score; n is the number of design parameters; R is the matching degree of each design parameter, where the value of the matching degree is 1 or 0; I is the weight of each design parameter.

[0118] Optionally, the secondary digital design device of the substation further includes:

[0119] The second partitioning module is configured to partition each first case into a plurality of second modules according to the voltage level and regional location in response to at least one first case existing among the plurality of cases;

[0120] Wherein, the design parameters of the first case include the voltage level and regional location.

[0121] Optionally, the second output module 304 specifically includes:

[0122] The second determining sub-module is configured to perform weighted matching on each first module according to the plurality of second modules and the plurality of first modules corresponding to each first case, and determine the second module matched by each first module;

[0123] The first output sub-module is configured to combine the second modules matched by each first module to obtain a second design scheme and output the second design scheme.

[0124] Optionally, the second determining sub-module specifically includes:

[0125] The second matching score sub-module is configured to obtain at least one second matching score of each first module based on the matching relationship between the plurality of second modules and the plurality of first modules corresponding to each first case and the weight of each second module among the plurality of second modules corresponding to each first case;

[0126] A third determination sub-module, for any first module, in response to at least one second matching score among at least one second matching score being greater than or equal to a second threshold, determines a second module matched by the first module, where the second matching score of the second module matched by the first module is the highest score among the at least one second matching score.

[0127] In some embodiments, both the first design solution and the second design solution include a secondary schematic diagram, a wiring diagram, loop information, and cable information.

[0128] It should be noted that when the device provided in the above embodiments realizes its functions, only the above-mentioned division of each functional module is used for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0129] Regarding the device in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated here.

[0130] Those skilled in the art should be able to realize that in the above one or more examples, the functions described in the embodiments of the present application can be implemented by hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. A computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0131] The embodiments of the present application also provide a computer storage medium for storing computer software instructions used for the above terminal or smart home device, which includes a program designed to execute the above substation secondary digital design method.

[0132] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0133] Other embodiments of the present application will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present application are pointed out by the claims.

[0134] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A secondary digital design method for a substation, characterized in that, the method includes: Input the engineering requirements into the knowledge base, and determine whether there is a matching case in the knowledge base, where the engineering requirements include multiple design parameters; In response to the existence of a matching case in the knowledge base, determine the design solution corresponding to the matching case as the first design solution, and output the first design solution; In response to the non-existence of a matching case in the knowledge base, divide the engineering requirements into multiple first modules according to the voltage level and regional location in the multiple design parameters; Based on the knowledge base, perform weighted matching on the multiple first modules, and output a second design solution; In response to the existence of at least one first case among multiple cases, divide each first case into multiple second modules according to the voltage level and regional location, where the design parameters of the first case include the voltage level and regional location; Wherein, the performing weighted matching on the multiple first modules based on the knowledge base and outputting a second design solution includes: According to the multiple second modules corresponding to each first case and the multiple first modules, perform weighted matching on each first module to determine the second module matched by each first module; Combine the second modules matched by each first module to obtain the second design solution, and output the second design solution; Wherein, the performing weighted matching on each first module according to the multiple second modules corresponding to each case and the multiple first modules includes: Based on the matching relationship between the multiple second modules corresponding to each first case and the multiple first modules and the weight of each second module in the multiple second modules corresponding to each first case, obtain at least one second matching score for each first module; For any first module, in response to the existence of at least one second matching score greater than or equal to the second threshold among the at least one second matching score, determine the second module matched by the first module, where the second matching score of the second module matched by the first module is the highest score among the at least one second matching score.

2. The secondary digital design method for a substation according to claim 1, characterized in that, before inputting the engineering requirements into the knowledge base, the method further includes: Establish the knowledge base, where the knowledge base includes multiple cases, the multiple cases are obtained according to existing data, and each case includes the at least one design parameter.

3. The secondary digital design method for a substation according to claim 2, characterized in that, inputting the engineering requirements into the knowledge base and determining whether there is a matching case in the knowledge base includes: Based on the value and corresponding weight of each design parameter in the multiple design parameters, obtain multiple first matching scores corresponding one by one to the cases in the knowledge base; In response to the existence of at least one first matching score greater than or equal to the first threshold among the multiple first matching scores, determine that there is a matching case in the knowledge base, where the first matching score of the matching case in the knowledge base is the highest score among the multiple first matching scores.

4. The secondary digital design method of a substation according to claim 3, wherein, the first matching score is obtained according to the following calculation formula: In the formula: P is the first matching score; n is the number of the design parameters; R is the matching degree of each design parameter, where the value of the matching degree is 1 or 0; I is the weight of each design parameter.

5. The secondary digital design method of a substation according to claim 1, wherein, both the first design scheme and the second design scheme include a secondary schematic diagram, a wiring diagram, loop information, and cable information.

6. A secondary digital design device of a substation, wherein, the device includes: a determination module, configured to input engineering requirements into a knowledge base and determine whether there is a matching case in the knowledge base, where the engineering requirements include a plurality of design parameters; a first output module, configured to, in response to the existence of a matching case in the knowledge base, determine the design scheme corresponding to the matching case as the first design scheme and output the first design scheme; a first division module, configured to, in response to the non-existence of a matching case in the knowledge base, divide the engineering requirements into a plurality of first modules according to the voltage level and regional location among the plurality of design parameters included in the engineering requirements; a second output module, configured to perform weighted matching on the plurality of first modules based on the knowledge base and output a second design scheme; a second division module, configured to, in response to the existence of at least one first case among a plurality of cases, divide each first case according to the voltage level and regional location to obtain a plurality of second modules, where the design parameters of the first case include the voltage level and regional location; wherein, the second output module includes: a second determination sub-module, configured to perform weighted matching on each first module according to the plurality of second modules corresponding to each first case and the plurality of first modules, and determine the second module matched by each first module; a first output sub-module, configured to combine the second modules matched by each first module to obtain the second design scheme and output the second design scheme; wherein, the second determination sub-module includes: a second matching score sub-module, configured to obtain at least one second matching score of each first module based on the matching relationship between the plurality of second modules corresponding to each first case and the plurality of first modules and the weight of each second module in the plurality of second modules corresponding to each first case; a third determination sub-module, configured to, for any one first module, in response to the existence of at least one second matching score greater than or equal to a second threshold among the at least one second matching score, determine the second module matched by the first module, where the second matching score of the second module matched by the first module is the highest score among the at least one second matching score.

7. A computer-readable storage medium, wherein, the computer-readable storage medium contains at least one computer-readable instruction, and when the computer-readable instruction is executed by a processor of an electronic device, the electronic device can execute the secondary digital design method of a substation according to any one of claims 1 to 5.

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