Method and system for constructing and maintaining historical state model of digital power distribution network operating system

Abstract

The invention discloses a method and a system for constructing and maintaining a historical state model of a digital power distribution network operating system, and belongs to the technical field of intelligent power grids. The method specifically comprises the steps of collecting global grid data, grid equipment data and equipment change operation data of a running state physical power grid, and constructing a power grid running state database and a power grid historical state database; a historical state digital power grid model is constructed, and the model takes a power grid operation state database as a ground state data set, and performs backtracking operation in combination with historical equipment section data in a power grid historical state database to generate grid frame data at a specified historical moment; and maintaining and updating the power grid operation state database and the power grid historical state database through the homologous maintenance application, and generating network frame data at a specified historical moment in the historical state digital power grid model, thereby realizing construction and maintenance of the historical state model of the digital power distribution network operation system. According to the method, storage consumption is reduced, and slow disk access during loading of a large-scale ground state data set is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of smart grids, and more specifically, relates to a method and system for constructing and maintaining a historical state model of a digital distribution network operating system. Background Art

[0002] In recent years, with the development of new power systems, the number of power grid equipment in each province has increased rapidly, and the base state correction model has been adopted to store historical grid frame data. This model periodically (such as monthly) records the complete grid frame state section, which is called the base state; the grid frame changes are recorded in units of power grid projects, and the project sequences between the base states form an incremental chain in chronological order, and each project is used as a node in the incremental chain. When it is necessary to generate the complete grid frame at a specified historical moment, the nearest base state before this moment is loaded from the historical database, and the grid frame changes recorded in the incremental chain are synchronously updated one by one in order, so that the base state grid frame can be evolved to the specified historical moment.

[0003] When the base state correction model is used to model the full-scale physical power grid, the periodically stored base state grid frame and the incremental chain synchronization algorithm still consume a large amount of storage, loading, and operation, and this model cannot accurately express a single device change. In the existing digital power grid architecture, in order to quickly respond to the requirements of upper-layer professional applications, the operating state digital power grid data is designed to be cached in the high-speed memory of the server for a long time and completely. Summary of the Invention

[0004] To solve the deficiencies in the prior art, the present invention provides a method and system for constructing and maintaining a historical state model of a digital distribution network operating system, which replaces the incremental chain storage with the historical grid frame device section to record the grid frame states of the physical grid at different historical moments, that is, records the grid frame changes in units of single device change operation data, greatly reducing the base state storage cost and the number of data loading, querying, and modifying operations. The historical grid frame section is a word, which can directly express the operation-related data of a single device change operation and the changes in the device ledger, geographical location, and topological relationship of the changed device, meeting the requirements of spatio-temporal integrity.

[0005] The present invention adopts the following technical solutions.

[0006] The first aspect of the present invention provides a method for constructing and maintaining a historical state model of a digital distribution network operating system, including:

[0007] Collecting the global grid frame data, grid frame device data, and device change operation data of the operating state physical power grid, where the device change operation data includes historical device section data;

[0008] Constructing an operating state database of the power grid based on the global grid frame data and grid frame device data, and constructing a historical state database of the power grid based on the device change operation data to obtain an operating state database of the power grid and a historical state database of the power grid;

[0009] Construct a historical digital power grid model, which uses the power grid operation state database as the base state data set, and combines the historical equipment section data in the power grid historical state database to perform backtracking operations to generate the grid data at a specified historical moment;

[0010] Maintain and update the power grid operation state database and the power grid historical state database through the homologous maintenance application;

[0011] Based on the updated power grid operation state database and the power grid historical state database, generate the grid data at a specified historical moment in the historical digital power grid model, and realize the construction and maintenance of the historical state model of the digital distribution network operation system.

[0012] Preferably, collecting the global grid data, grid equipment data and equipment change operation data of the operating physical power grid specifically includes:

[0013] Collect the global characteristic data and complete grid topology in the current operating physical power grid, and record the complete equipment ledger and topological relationship of grid equipment at different specialties and voltage levels;

[0014] Continuously record the equipment change operation data executed in each equipment change task of the physical power grid.

[0015] Preferably, the equipment change operation data specifically includes:

[0016] The operation type, operation timestamp, operation spatial coordinates and historical grid equipment section of the grid change operation.

[0017] Preferably, the historical grid equipment section specifically includes:

[0018] The complete equipment status and topological relationship of the equipment with changes before the change.

[0019] Preferably, for the construction of the historical digital power grid model, which uses the power grid operation state database as the base state data set and combines the power grid historical state database to perform backtracking operations to generate the grid data at a specified historical moment, specifically includes:

[0020] The historical digital power grid model constructs an operating digital power grid data set with the global grid data and grid equipment data in the power grid operation state database, and uses the operating digital power grid data set as the base state data set. The operating grid equipment data in the base state data set is combined with the historical grid equipment section, and the grid data at a specified historical moment is generated in real time through backtracking operations.

[0021] Preferably, the operating grid equipment data in the base state data set is combined with the historical grid equipment section, and the grid data at a specified historical moment is generated in real time through backtracking operations, specifically includes:

[0022] After the historical digital power grid model receives a request from the upper-layer application for the grid frame data at a specified historical moment, it uses the operating digital power grid dataset as the base state, queries the grid historical database for the first device change operation that occurred to all grid frame devices after the specified historical moment, replaces the operating device state of the abnormal device with the historical device state section of this abnormal device recorded in the device change operation, traces back the device state of the changed abnormal device to the specified historical moment, and traces back all grid frame devices to the specified historical grid time, and then generates the historical digital power grid data at the specified historical moment.

[0023] Preferably, maintaining and updating the grid operating database and the grid historical database through the homologous maintenance application specifically includes:

[0024] Input the device change data into the homologous maintenance application;

[0025] The homologous maintenance application uses the input device change data to replace the grid frame device data of the corresponding device in the original operating database;

[0026] Based on the original operating grid frame device data, generate the historical device state section of the changed device, record the device inventory, topological relationship, and graphical data before the device change, and then combine the device change type and the changed spatial coordinate data in the device change data to generate a new change operation data and store it in the grid historical database.

[0027] Preferably, inputting the device change data into the homologous maintenance application specifically includes:

[0028] The digital distribution network operation system first transmits the initialization information of the device change task to the resource service center. The center retrieves the line, substation, and device data from the operating digital power grid according to the grid frame scope involved in the task, displays the circuit diagrams of the corresponding transmission lines, substations, and distribution feeders on the graphical model data maintenance interface of the homologous maintenance application, and performs the graphical model integrated data maintenance of the device change operation on the circuit diagrams.

[0029] Preferably, the graphical model integrated data maintenance of the device change operation specifically includes: creating, modifying, and deleting operations on the graphic elements, device inventory, and topological relationship of the changed device.

[0030] The second aspect of the present invention provides a historical state model construction and maintenance system for a digital distribution network operation system, which is used to run the historical state model construction and maintenance method for a digital distribution network operation system described in the first aspect of the present invention, including:

[0031] Data acquisition module: used to acquire the global grid frame data, grid frame device data, and device change operation data of the operating physical power grid, where the device change operation data includes historical device section data;

[0032] Database construction module: It is used to construct the power grid operation state database based on the global grid data and grid equipment data, and construct the power grid historical state database based on the equipment change operation data, so as to obtain the power grid operation state database and the power grid historical state database;

[0033] Model construction module: It is used to construct the historical state digital power grid model. The model takes the power grid operation state database as the base state data set, and performs backtracking operations in combination with the historical equipment section data in the power grid historical state database to generate the grid data at a specified historical moment;

[0034] Maintenance module: It is used to maintain and update the power grid operation state database and the power grid historical state database through the homologous maintenance application;

[0035] Output module: According to the updated power grid operation state database and the power grid historical state database, the grid data at a specified historical moment is generated in the historical state digital power grid model, realizing the construction and maintenance of the historical state model of the digital distribution network operation system.

[0036] The third aspect of the present invention proposes an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the computer program is loaded into the processor, it implements the method for constructing and maintaining the historical state model of the digital distribution network operation system described in the first aspect of the present invention.

[0037] The fourth aspect of the present invention proposes a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, it implements the method for constructing and maintaining the historical state model of the digital distribution network operation system described in the first aspect of the present invention.

[0038] Compared with the prior art, the beneficial effects of the present invention at least include: The operation state digital power grid data is cached in the server high-speed memory for a long time and completely. The data increment update mechanism of the operation state grid equipment data ensures the real-time performance of the operation state digital power grid data, and can accurately express the instantaneous state of the current operating power grid. The historical state digital power grid model can use the operation state digital power grid data set as the base state, reducing storage consumption and avoiding slow disk access when loading a large-scale base state data set. This model can generate a complete historical grid section at any historical moment only through a single replacement operation on part of the grid data, greatly reducing the base state storage cost and the number of data loading, querying, and modifying operations, and can directly express the operation-related data of a single equipment change operation and the changes in the account information, geographical location, and topological relationship of the changed equipment, meeting the requirements of spatio-temporal integrity. Description of the Drawings

[0039] Figure 1 It is a schematic diagram of the method for constructing and maintaining the historical state model of the digital distribution network operation system provided according to the embodiments of the present invention. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0041] As Figure 1 shown, Embodiment 1 of the present invention provides a method for constructing and maintaining a historical state model of a digital distribution network operation system, including the following steps:

[0042] Step 1: Collect the global grid data, grid equipment data, and equipment change operation data of the operating physical power grid. Among them, the equipment change operation data includes historical equipment section data.

[0043] In a preferred but non-limiting embodiment of the present invention, the collection of the global grid data, grid equipment data, and equipment change operation data of the operating physical power grid specifically includes:

[0044] The global characteristic data and complete grid topology in the current operating physical power grid are recorded, and the complete equipment ledgers and topological relationships of various grid equipment of different specialties and different voltage levels that are its constituent elements are recorded;

[0045] Continuously record the grid equipment change operations performed in each equipment change task of the physical power grid.

[0046] Further preferably, the equipment change operation data records the operation type, operation timestamp, spatial coordinates of the operation, and historical grid equipment section.

[0047] More preferably, the operation types of the grid equipment change operations include three types: ① addition, ② change, ③ deletion, and the historical grid equipment section includes the complete equipment status and topological relationship of this abnormal device before the change.

[0048] Step 2: Construct a power grid operating state database based on the global grid data and grid equipment data in Step 1, and construct a power grid historical state database based on the equipment change operation data in Step 1 to obtain a power grid operating state database and a power grid historical state database.

[0049] In a preferred but non-limiting embodiment of the present invention, the global grid data and specific grid equipment data in the currently operating physical power grid framework collected in step 1 are stored in the power grid operation database in separate tables according to the professional type and equipment type of the grid equipment; the grid equipment change operation data set collected in step 1 is stored in the power grid historical database.

[0050] Step 3: Construct a historical digital power grid model, which uses the power grid operation database as the base state data set and performs backtracking operations in combination with the historical equipment section data in the power grid historical database to generate the grid data at a specified historical moment.

[0051] In a preferred but non-limiting embodiment of the present invention, the historical digital power grid model constructs an operating digital power grid data set from the global grid data and grid equipment data in the power grid operation database, uses the operating digital power grid data set as the base state data set, and generates historical digital power grid data sets at different historical moments through backtracking operations on the operating grid equipment data in the base state data set in combination with the historical grid equipment sections.

[0052] Further preferably, after the historical digital power grid model receives a request from the upper-layer application for the grid data at a specified historical moment, it performs grid backtracking operations, uses the operating power grid equipment data set as the base state, queries in the power grid historical database for the first equipment change operation that occurred to all grid equipment after the specified historical moment, and replaces the operating equipment state of this abnormal moving equipment recorded in the equipment change operation with the historical equipment state section of this abnormal moving equipment, so as to backtrack the equipment state of the abnormal moving grid equipment that has changed to the specified historical moment. After all grid equipment is backtracked to the specified historical grid time, a historical digital power grid data set at the specified historical moment is generated.

[0053] More preferably, in the equipment change operation record, not only the operation-related data such as the change type is recorded, but also the historical equipment state section before this equipment change is completely saved, including its equipment account, topological relationship, and graphical data.

[0054] It should be noted that for the problems that the base state grid framework stored periodically and the incremental chain synchronization algorithm in the existing base state correction model still generate a large amount of storage, loading, and computing consumption, and this model cannot accurately express a single equipment change, the present invention stores and records the grid state of the physical grid at different historical moments in the way of replacing the incremental chain with the historical grid equipment section, that is, records the grid changes in units of single equipment change operation data. At the same time, the historical digital power grid model based on the historical grid equipment section does not directly store the grid state at each historical moment, but generates the grid data at a specified historical moment through backtracking operations in real time when receiving a request.

[0055] Step 4: Maintain and update the power grid operation state database and the power grid historical state database through the homologous maintenance application.

[0056] In a preferred but non-limiting embodiment of the present invention, the present invention defines the grid equipment change operations at the sites of power transmission, transformation, and distribution services in each province as the key connection points of the physical power grid, the operation state digital power grid, and the historical state digital power grid. Through the accurate mapping of the grid equipment status and its changes, the digital twin of the operation state and historical state physical power grid is realized. When equipment changes occur in the physical power grid, through grid model maintenance applications, such as the homologous maintenance application, the changes are synchronously updated to the operation state digital power grid in real time.

[0057] Further preferably, the maintenance and update of the power grid operation state database and the power grid historical state database through the homologous maintenance application specifically include:

[0058] Input the equipment change data into the homologous maintenance application;

[0059] The homologous maintenance application uses the input equipment change data to replace the grid equipment data of the corresponding equipment in the original operation state database;

[0060] Based on the original operation state grid equipment data, generate the historical equipment state section of the changed equipment, record the equipment ledger, topological relationship, and graphical data before the equipment change, and then combine the equipment change type and change space coordinate data in the equipment change data to generate a new change operation data and store it in the power grid historical state database.

[0061] More preferably, the staff will input the equipment ledger and equipment topological connection relationship data of the newly commissioned grid equipment, as well as data such as the operation type of the equipment change operation, into the homologous maintenance application. The homologous maintenance application will update the data in the existing power grid operation state database and the power grid historical state database in the current digital distribution network operation system based on the data input by the staff, and update the existing grid equipment state data in the operation state digital power grid with the latest grid equipment state data after the change. And based on the original operation state grid equipment data, generate the historical equipment state section of the changed equipment, combine the newly input change type and change space coordinate data, generate a new change operation data, and store it in the historical state digital power grid database.

[0062] More preferably, the input of the equipment change data into the homologous maintenance application specifically includes:

[0063] After on-site staff complete the equipment change operations included in the equipment operation and inspection tasks, they initiate the equipment change process through the homologous maintenance system. The digital distribution network operation system first transmits the initialization information of the equipment change task to the resource business middle platform. The middle platform retrieves relevant line, substation, and equipment data from the operating digital power grid according to the grid scope involved in the task, and displays the circuit diagrams of the corresponding transmission lines, substations, and distribution feeders on the graphic and model data maintenance interface of the homologous maintenance system. On this interface, integrated graphic and model data maintenance of equipment change operations is performed, including the creation, modification, and deletion operations of the graphic elements, equipment account books, and topological relationships of the changed equipment.

[0064] More preferably, multiple grid equipment change tasks may occur simultaneously in the physical power grid. To prevent the direct incorporation of equipment change data that may be repeatedly maintained and conflicted with into the operating digital power grid, the present invention adopts an editing-state power grid model. The data maintenance process for a primary equipment change task initiated by the homologous maintenance system generates an edited version of this task in the editing-state power grid model, which records all the equipment change operation data included in this version, including the operation type, the changed graphic elements, equipment account books, and topological relationships. In the editing-state model, a task can have multiple edited versions. After the edited version is submitted for review, if the review fails, it is re-edited; if the review passes, this edited version will be officially released, and the equipment data changes included in it will be synchronized from the editing-state model to the operating digital power grid, that is, the original equipment data in the operating digital power grid will be replaced by the changed equipment graphic and model data. The replaced equipment data generates a historical equipment state section based on the historical-state digital power grid model, recording the equipment account book, topological relationship, and graphical data of this equipment before the change. The historical equipment state section and operation information such as the operation type form an equipment change operation record, which is saved in the historical-state digital power grid database. This data maintenance mode can achieve the close connection and data homology of the physical power grid, the operating digital power grid, and the historical-state digital power grid. Based on the homologous maintenance application, unified data collection of equipment data and equipment change operation data in different specialties and business sites of the power grid is realized, ensuring the data synchronization and data quality of the physical power grid, the operating digital power grid, and the historical-state digital power grid, and realizing the data maintenance of the historical-state model of the digital distribution network operation system.

[0065] Step 5: Generate the grid data at a specified historical moment in the historical-state digital power grid model based on the updated grid operating-state database and grid historical-state database, and realize the construction and maintenance of the historical-state model of the digital distribution network operation system.

[0066] Compared with the prior art, the beneficial effects of the present invention at least include: the running-state digital power grid data is cached in the high-speed memory of the server for a long time and completely, and the data increment update mechanism of the running-state grid equipment data ensures the real-time nature of the running-state digital power grid data, and can accurately express the instantaneous state of the current operating power grid. The historical-state digital power grid model can use the running-state digital power grid data set as the base state, reducing storage consumption and avoiding slow disk access when loading a large-scale base state data set. This model can generate a complete historical grid section at any historical moment only through a single replacement operation on part of the grid data, greatly reducing the base state storage cost and the number of data loading, querying, and modifying operations, and can directly express the operation-related data of a single equipment change operation and the changes in the account information, geographical location, and topological relationship of the changed equipment, meeting the requirements of spatio-temporal integrity.

[0067] Embodiment 2 of the present invention provides a system for constructing and maintaining a historical-state model of a digital distribution network operating system, which operates the method for constructing and maintaining a historical-state model of a digital distribution network operating system described in Embodiment 1, including:

[0068] Data acquisition module: used to acquire the global grid data, grid equipment data, and equipment change operation data of the running-state physical power grid, where the equipment change operation data includes historical equipment section data;

[0069] Database construction module: used to construct a power grid running-state database based on the global grid data and grid equipment data, and construct a power grid historical-state database based on the equipment change operation data to obtain a power grid running-state database and a power grid historical-state database;

[0070] Model construction module: used to construct a historical-state digital power grid model, and the model uses the power grid running-state database as the base state data set, and performs backtracking operations in combination with the historical equipment section data in the power grid historical-state database to generate grid data at a specified historical moment;

[0071] Maintenance module: used to maintain and update the power grid running-state database and the power grid historical-state database through a homologous maintenance application;

[0072] Output module: Based on the updated power grid running-state database and power grid historical-state database, grid data at a specified historical moment is generated in the historical-state digital power grid model, realizing the construction and maintenance of the historical-state model of the digital distribution network operating system.

[0073] Embodiment 3 of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the computer program is loaded into the processor, it implements the method for constructing and maintaining a historical-state model of a digital distribution network operating system described in Embodiment 1.

[0074] Embodiment 4 of the present invention provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements a method for constructing and maintaining a historical state model of a digital distribution network operating system according to Embodiment 1.

[0075] The present disclosure may be a system, a method, and / or a computer program product. The computer program product may include a computer-readable storage medium having thereon computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the protection scope of the claims of the present invention.

Claims

1. A method for constructing and maintaining a historical state model of a digital distribution network operating system, characterized in that: Collect global grid data, grid equipment data and equipment change operation data of the operating physical power grid, where the equipment change operation data includes historical equipment section data; A power grid operation state database is constructed based on global grid data and grid equipment data, and a power grid historical state database is constructed based on equipment change operation data, thereby obtaining a power grid operation state database and a power grid historical state database; Constructing a historical digital power grid model, wherein the model uses the power grid operation database as the base data set, and performs a backtracking operation on the historical equipment section data in the power grid historical database to generate the grid data at a specified historical moment; Maintain and update the power grid operation database and power grid history database through the same-source maintenance application; The grid data of the specified historical moment is generated in the historical digital grid model according to the updated grid operation database and grid historical database, so as to realize the construction and maintenance of the historical model of the digital distribution network operating system.

2. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 1, characterized in that: The collecting of global grid data, grid equipment data and equipment change operation data of the operating physical power grid specifically includes: Collect global characteristic data and complete grid topology in the current operating physical power grid, and record the complete equipment ledger and topological relationship of grid equipment of different professions and voltage levels; Continuously record the equipment change operation data performed in each equipment change task of the physical power grid.

3. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 2, characterized in that: The equipment change operation data specifically includes: The operation type, operation timestamp, spatial coordinates of the operation and historical grid equipment sections of the grid change operation.

4. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 3, characterized in that: The historical grid equipment section specifically includes: The complete device status and topological relationship of the changed device before the change.

5. The method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 1, characterized in that: The historical digital power grid model is constructed, wherein the model uses the power grid operation database as the base data set, and performs backtracking calculations in combination with the power grid historical database to generate grid data at a specified historical moment, specifically including: The historical digital power grid model constructs an operating digital power grid data set based on the global grid data and grid equipment data in the power grid operating database, and takes the operating digital power grid data set as the base data set. The operating grid equipment data in the base data set is combined with the historical grid equipment sections, and the grid data at the specified historical moment is generated in real time through backtracking operations.

6. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 5, characterized in that: The running grid equipment data in the base state data set is combined with the historical grid equipment section to generate grid data at a specified historical moment in real time through backtracking calculation, specifically including: After the historical digital power grid model receives the request from the upper-layer application for the grid data at a specified historical moment, it uses the operating digital power grid data set as the base state, queries the grid historical database for the first equipment change operation of all grid devices after the specified historical moment, replaces its operating equipment state with the historical equipment state section of the changed equipment recorded in the equipment change operation, traces back the equipment state of the changed equipment to the specified historical moment, traces back all grid equipment to the specified historical grid time, and generates the historical digital power grid data at the specified historical moment.

7. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 1, characterized in that: The maintenance and updating of the power grid operation state database and the power grid history state database by using the same-source maintenance application specifically includes: Input equipment change data into the same-source maintenance application; The homologous maintenance application uses the input device change data to replace the grid device data of the corresponding device in the original running state database; Based on the original operating grid equipment data, a historical equipment status section of the changed equipment is generated to record the equipment ledger, topological relationship and graphical data before the equipment change. Then, combined with the equipment change type and change spatial coordinate data in the equipment change data, a new change operation data is generated and stored in the power grid historical database.

8. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 7, characterized in that: The inputting of the equipment change data into the same-source maintenance application specifically includes: The digital distribution network operating system first passes the initialization information of the equipment change task to the resource business middle platform. The middle platform retrieves the line, station and equipment data from the operating digital power grid according to the grid scope involved in the task, and displays the circuit diagram of the corresponding transmission line, substation and distribution feeder on the graphic data maintenance interface of the homologous maintenance application, and performs graphic and model integrated data maintenance of the equipment change operation on the circuit diagram.

9. A method for constructing and maintaining a historical state model of a digital distribution network operating system according to claim 8, characterized in that: The graphic-model integrated data maintenance of the equipment change operation specifically includes: creating, modifying and deleting the graphic elements, equipment ledgers and topological relationships of the changed equipment.

10. A digital distribution network operating system historical state model construction and maintenance system, running a digital distribution network operating system historical state model construction and maintenance method according to any one of claims 1 to 9, characterized in that: Data acquisition module: used to collect global grid data, grid equipment data and equipment change operation data of the operating physical power grid, among which the equipment change operation data includes historical equipment section data; Database construction module: used to construct a power grid operation database based on global grid data and grid equipment data, and to construct a power grid history database based on equipment change operation data, thereby obtaining a power grid operation database and a power grid history database; Model building module: used to build a historical digital power grid model, which uses the power grid operation database as the base data set, combines the historical equipment section data in the power grid historical database to perform backtracking calculations to generate grid data at a specified historical moment; Maintenance module: used to maintain and update the power grid operation database and power grid history database through the same source maintenance application; Output module: Generates grid data at a specified historical moment in the historical digital power grid model based on the updated power grid operation database and power grid historical database, and realizes the construction and maintenance of the historical model of the digital distribution network operating system.

11. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the computer program is loaded into a processor, a method for constructing and maintaining a historical state model of a digital distribution network operating system according to any one of claims 1 to 9 is implemented.

12. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, a method for constructing and maintaining a historical state model of a digital distribution network operating system according to any one of claims 1 to 9 is implemented.

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