Intelligent substation secondary system multi-dimensional information model delivery scheme

Abstract

The invention discloses an intelligent substation secondary system multi-dimensional information model delivery scheme, and particularly relates to the field of substation secondary systems, comprising the following steps: S1, analyzing an intelligent substation secondary system multi-dimensional information model structure to form a multi-level equipment directory tree structure comprising substations, intervals, screen cabinets / equipment, devices / parts and the like; s2, carrying out decoupling and merging processing on the secondary system multi-dimensional information model, and formulating and applying an automatic screening rule and a boundary equipment processing rule; and S3, designing and realizing a model file management and control and delivery process which comprises the functions of user permission verification, model file downloading, model decoupling and reconstruction, version control, online verification and the like. The method solves the deepening application problem of the three-dimensional digital design model of the transformer substation project in a plurality of links such as project construction, operation and maintenance, overhaul, scheduling and the like, and adapts to the trend of comprehensive popularization and application of the three-dimensional digital design of the transformer substation project in a state grid company system.

Description

Technical Field

[0001] The present invention relates to the technical field of substation secondary systems, and more specifically, to a multi-dimensional information model delivery solution for a secondary system of an intelligent substation. Background Art

[0002] In order to comply with the general trend of the integration of energy revolution and digital revolution, State Grid Corporation of China proposed to further build an information support system and a value creation system, and to construct a smart energy system with the characteristics of green safety, ubiquitous interconnection, efficient interaction, and intelligent openness. In recent years, the construction of power transmission and transformation projects of the power grid has been strengthened, and the quality of project construction has gradually been paid attention to. The company has put forward the strategic goal requirements of "digital power grid". Among them, a lot of work has been carried out in the three-dimensional digital design, digital handover, digital results management and application of power transmission and transformation projects, and the data management and application capabilities of power transmission and transformation projects covering different links such as data acquisition, integration, and application have been initially formed.

[0003] At present, the Engineering Data Center of State Grid Corporation has carried out research on the engineering data management technology system, key technologies and engineering construction application of 3D design results. With the deepening of the application of 3D digital technology in power grid transmission and transformation projects, the huge amount of engineering data, diverse data types, complex data sources and data structures, uneven quality, and many new data access requirements have brought great challenges to the management and analysis of power grid transmission and transformation projects. At present, most domestic construction projects have the conditions to submit results and guide construction using 3D digital technology, and there are a large number of successful cases. In contrast, in the power industry, especially power grid projects, most power design institutes have certain 3D design capabilities, but they are mainly concentrated in the modeling and design of electrical primary and civil engineering, and fail to cover the logic circuit of electrical secondary system. As a result, the current substation secondary design work still uses CAD manual drawing or auxiliary software. In the digital handover, only the physical model of the secondary equipment body is submitted, lacking the information on the attributes and configuration of the secondary equipment, and lacking the key information such as the logic circuit of the electrical secondary system, equipment configuration parameters, and connection relationship. It cannot meet the needs of further deepening the application of 3D digital design results in engineering construction, operation and maintenance, inspection, dispatching and other links. Therefore, it is urgent to propose a delivery solution based on the multidimensional information model of the substation secondary system to provide data support for the substation engineering application analysis based on engineering big data technology.

[0004] Based on the above problems, the patent of this invention proposes a multi-dimensional information model delivery solution for the secondary system of an intelligent substation, which solves the problem of in-depth application of the three-dimensional digital design model of substation projects in multiple links such as engineering construction, operation and maintenance, inspection, and dispatching, and adapts to the trend of comprehensive promotion and application of three-dimensional digital design of substation projects within the State Grid Corporation system. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-dimensional information model delivery solution for the secondary system of a smart substation to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a smart substation secondary system multidimensional information model delivery solution, comprising the following steps:

[0007] S1: Analyze the multi-dimensional information model structure of the secondary system of the smart substation to form a multi-level equipment directory tree structure including substations, bays, cabinets / equipment, devices / components, etc.;

[0008] S2: Decouple and merge the multidimensional information model of the secondary system, formulate and apply automatic screening rules and boundary device processing rules;

[0009] S3: Design and implement model file management and delivery processes, including user permission verification, model file download, model decoupling and reconstruction, version control, online verification and other functions.

[0010] Preferably, step S1 also includes classifying the secondary system multidimensional information by substation, bay, cabinet / equipment, device / component, etc., importing data through a standard EXCEL spreadsheet mode, and uploading related link files to the management system as attachments.

[0011] Preferably, the model decoupling rules in step S2 include: formulating the intervals and device types that need to be screened, automatically screening according to the screening rule library, and visually displaying the screening results to the user for fine-tuning; at the same time, setting the permissions of the boundary devices to be unmodifiable and having only read-only permissions.

[0012] Preferably, the model file management and delivery process in step S3 also includes: the user configures the model decoupling rules through the visual interface, requests the model decoupling service from the version management server, and modifies the decoupled model file; after the modification is completed, the user requests the model reconstruction service from the version management server, and performs version release and online verification.

[0013] Technical effects and advantages of the present invention:

[0014] 1. Realize the digital delivery of multi-dimensional information model of smart substation secondary system to ensure data integrity and prevent key data information from being lost.

[0015] 2. By sharing data information, the number of visits to the project site for renovation, expansion and technical transformation projects to inquire about secondary system equipment and wiring information can be reduced. The number of visits to the site by secondary professionals for each project can be reduced, reducing labor costs.

[0016] 3. A decoupling method for multidimensional information models is proposed to achieve version control, ensure data security and data lightweight. After modification, there is no need to recheck and verify all information, which reduces the workload of smart substation commissioning and operation and maintenance and improves the safety of renovation and expansion projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a standard format file directory structure diagram of the present invention.

[0018] Figure 2 This is a hierarchical diagram of the device directory tree of the present invention.

[0019] Figure 3 This is a multi-dimensional information diagram corresponding to the substation of the present invention.

[0020] Figure 4 This is a multi-dimensional information graph corresponding to the interval of the present invention.

[0021] Figure 5 This is a multi-dimensional information diagram corresponding to the screen cabinet / equipment of the present invention.

[0022] Figure 6 This is a multi-dimensional information diagram corresponding to the device / component of the present invention.

[0023] Figure 7 It is a schematic diagram of SCD file cutting of the present invention.

[0024] Figure 8 It is a schematic diagram of the SCD model merger of the present invention.

[0025] Fig. 9 It is a schematic diagram of the model file management and control process of the present invention.

[0026] Fig.10 The main wiring interface diagram is derived for the implementation scenario of the present invention.

[0027] Fig.11 This is a three-dimensional model interface display diagram of the implementation scenario of the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present invention provides a smart substation secondary system multi-dimensional information model delivery solution, comprising the following steps:

[0030] S1: Analyze the multi-dimensional information model structure of the secondary system of the smart substation to form a multi-level equipment directory tree structure including substations, bays, cabinets / equipment, devices / components, etc.;

[0031] S2: Decouple and merge the multidimensional information model of the secondary system, formulate and apply automatic screening rules and boundary device processing rules;

[0032] S3: Design and implement model file management and delivery processes, including user permission verification, model file download, model decoupling and reconstruction, version control, online verification and other functions.

[0033] The step S1 also includes classifying the secondary system multi-dimensional information by substation, bay, cabinet / equipment, device / component, etc., importing data through a standard EXCEL spreadsheet mode, and uploading related link files to the management system as attachments.

[0034] The model decoupling rules in step S2 include: formulating the intervals and device types that need to be screened, automatically screening according to the screening rule library, and visually displaying the screening results to the user for fine-tuning; at the same time, setting the permissions of the boundary devices to be unmodifiable and only having read-only permissions.

[0035] The model file management and delivery process in step S3 also includes: the user configures the model decoupling rules through the visual interface, requests the model decoupling service from the version management server, and modifies the decoupled model file; after the modification is completed, the user requests the model reconstruction service from the version management server, and performs version release and online verification.

[0036] In specific implementation, the specific steps in step S1 are as follows:

[0037] The data stored in the standard format of the secondary system of the smart substation include: IED capability description file (*.ICD), single device physical model (*.IPD), panel cabinet physical model (*.CPD), single line diagram description file (SLD.SCH), substation system configuration file (SCD.SCH), and full station physical loop model (*.SPD). Figure 1 The directory structure shown is used for storage.

[0038] Among them, the carriers of the secondary system multi-dimensional information can be divided into the following levels: substation, bay (including virtual bay), cabinet / equipment, device / component. According to this level, the equipment related to the secondary system can be classified to form a secondary system equipment directory tree structure. The equipment directory tree hierarchy is shown in the figure below: Figure 2 shown.

[0039] like Figure 3The multi-dimensional information corresponding to the substation shown, the substation parameter attribute information is stored in the management system in the above directory tree structure, and the data can be imported through the standard EXCEL table mode. The link file can be uploaded to the management system in the form of an attachment. The SCD model and the SPD model are mounted at the substation level.

[0040] like Figure 4 As shown, the multi-dimensional information corresponding to the interval and the interval / virtual interval parameter information can be stored in the management system in the directory tree structure shown in the figure, and the data can be imported through the standard EXCEL table mode. The link file can be uploaded to the management system in the form of an attachment. The SCD model and SPD model decoupled by interval are mounted on the interval level.

[0041] like Figure 5 As shown in the figure, the multi-dimensional information corresponding to the panel cabinet / equipment and the parameter information of the panel cabinet / equipment can be stored in the management system in the directory tree structure shown in the figure, and the data can be imported through the standard EXCEL table mode. The link file can be uploaded to the management system in the form of an attachment. The CPD model and operation and maintenance data are mounted on the panel cabinet / equipment.

[0042] like Figure 6 As shown, the multi-dimensional information corresponding to the device / component and the parameter information of the device / component can be stored in the management system in the above directory tree structure, and the data can be imported through the standard EXCEL table mode. The link file can be uploaded to the management system in the form of an attachment. The IPD model, ICD model and operation and maintenance data are attached to the device / component.

[0043] The specific steps of step S2 include:

[0044] Through the analysis of the structure of the secondary system multidimensional information model and the delivery mode, in order to efficiently manage the multidimensional information of the substation secondary system, it is necessary to process the secondary system multidimensional information model, mainly decoupling and merging.

[0045] Model decoupling means cutting out the equipment and virtual terminal configuration information related to the renovation and expansion from the entire SCD file, such as Figure 7 As shown, the model decoupling is illustrated.

[0046] Specifically, the model decoupling rules are:

[0047] (1) The purpose of model decoupling is to extract the devices required in the original model file and the configuration nodes related to these devices, such as network access points, data sets, physical connections, etc.

[0048] (2) In order to achieve automatic decoupling of the model, it is essentially necessary to formulate automatic screening rules for the devices that need to be modified. The devices can be divided by multiple dimensions such as interval, device type, and system. Therefore, a rule base is formulated. First, the interval that needs to be screened is formulated, and all devices in the interval are screened according to the interval. However, for some common devices across intervals, it is necessary to filter by device type or system type. Finally, the screening rules are stored in the rule base for reuse. Finally, the devices screened by each dimension are combined to obtain the automatically screened device set;

[0049] (3) Visually display the automatically selected device set to the user, and let the user manually fine-tune to determine the final decoupled device set;

[0050] (4) By screening out the selected devices, devices that are associated with them (e.g., devices that are logically connected or physically connected) are also screened out. These devices that are associated are called boundary devices.

[0051] (5) Set the permissions of the boundary devices to be unmodifiable, with only read-only permissions, so that users can only modify devices within the boundary;

[0052] (6) The boundary device mainly provides support for the model automatic reconstruction module.

[0053] At the same time, the cropped and modified model needs to be merged back into the original SCD file, such as Figure 8 The SCD model is merged as shown.

[0054] Among them, the model merging rules are:

[0055] (1) Figure 8 As shown, it is assumed that the equipment that needs to be modified and expanded is the three equipment marked directly below the line bay 2 in the figure;

[0056] (2) Find the boundary device set associated with the target device based on the topological relationship and logical relationship between devices. Figure 8 Devices marked first and third directly below midline bay 1 and first and third in busbar bays);

[0057] (3) Set the permissions of the edge device to be unchangeable;

[0058] (4) After the user adds or modifies equipment parameters in the renovation and expansion project, the user needs to add the boundary devices associated with the newly added equipment to the boundary device set;

[0059] When the modified decoupled file is imported into the SCD / SPD file for merging, only the boundary device and the target device need to be replaced at the same time.

[0060] The specific steps of step S3 include:

[0061] like Fig. 9 The model file control and delivery process shown in the figure is as follows:

[0062] (1) The user makes a request to the version management server to download a model file of a specified version;

[0063] (2) The version management server determines whether the user has permission to access the file. If not, access is denied.

[0064] (3) If the permission is granted, a request is sent to the file server to obtain the corresponding version of the model file according to the version specified by the user;

[0065] (4) The file server retrieves the corresponding model file and returns it to the version management server. At the same time, the version management server records the user's access information and caches the model file for use in the model reconstruction module.

[0066] (5) The user displays the extracted SCD / SPCD file through a visual interface;

[0067] (6) The user configures the model decoupling rules and requests the model decoupling service from the version management server. After the model decoupling is completed, the decoupled model file is returned to the user;

[0068] (7) The user modifies the model file;

[0069] (8) After the modification is completed, the user requests the model reconstruction service from the version management server. After the model reconstruction is completed, it is compared with the original SCD / SPCD file, and the reconstructed model file and the comparison report are displayed to the user;

[0070] (9) After the user confirms, the reconstructed model file will be applied for publishing a new version;

[0071] (10) The version management server determines whether the user has the authority to publish the version. If not, access is denied.

[0072] (11) If the permission is passed, the version management server verifies the new version model file through the online verification module. If the verification fails, the corresponding verification report is returned to the user;

[0073] If the verification passes, the model file will be uploaded to the file server and the file will be automatically upgraded. At this point, the process ends.

[0074] Technology implementation scenario:

[0075] It is applied in a 110kV substation. The substation is designed for 110kV and 10kV secondary voltages. The final construction scale of the main transformer is 3 50MVA (121 / 10.5kV) three-phase two-winding self-cooled on-load tap-changing transformers, and 1 unit is installed in this phase. The final outgoing line scale of 110kV is 4, and 1 outgoing line is installed in this phase. The final outgoing line scale of 10kV is 42, and 14 outgoing lines are installed in this phase. 1×(4.8+3.6)Mvar capacitor bank is installed on the 1# transformer side in this phase. The secondary equipment is arranged in a centralized manner, and a comprehensive secondary equipment room and a separate battery room are set up. The secondary equipment room is designed according to the final scale of the substation, and 38 screen positions are arranged. The station control layer equipment, the interval layer equipment of the main transformer part, the AC / DC integrated power supply cabinet, the communication cabinet, etc. are all arranged in it. The battery is arranged in the adjacent room of the comprehensive secondary equipment room and installed in a rack. The 10kV secondary equipment is lowered and arranged in the local switch cabinet.

[0076] The effect after delivery is: relying on an actual 110kV project, the import and export functions of the multi-dimensional information model of the substation secondary system and the data management function based on bays, panels, equipment and cables are realized. At the same time, the advanced application functions of virtual-real correspondence visualization and model decoupling and reconstruction are realized.

[0077] 1) If Fig.10 As shown, export the main wiring of the project.

[0078] 2) If Fig.11 As shown, the function of data management by intervals, cabinets, devices, cables and other objects is realized, and the corresponding files can be uploaded according to each object; select the device to view the virtual circuit information related to the device, select the virtual circuit to view the corresponding wire core, and highlight the devices and connecting cables on both sides in the 3D model.

[0079] The three economic indicators for applying this technology are as follows:

[0080] (1) Realize the digital delivery of the multi-dimensional information model of the secondary system of the smart substation to ensure data integrity and prevent key data information from being lost.

[0081] (2) By sharing data information, the number of visits to the project site for inquiries on secondary system equipment and wiring information for renovation, expansion, and technical transformation projects can be reduced. The number of visits to the project site by secondary professionals for each project can be reduced, thereby reducing labor costs.

[0082] (3) A decoupling method for the multidimensional information model is proposed to implement version control, ensure data security and data lightweight. After modification, there is no need to recheck and verify all information, which reduces the workload of smart substation commissioning and operation and maintenance and improves the safety of renovation and expansion projects.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-dimensional information model delivery solution for the secondary system of a smart substation, characterized in that: The following steps are involved: S1: Analyze the multi-dimensional information model structure of the secondary system of the smart substation to form a multi-level equipment directory tree structure including substations, bays, cabinets / equipment, devices / components, etc.; S2: Decouple and merge the multidimensional information model of the secondary system, formulate and apply automatic screening rules and boundary device processing rules; S3: Design and implement model file management and delivery processes, including user permission verification, model file download, model decoupling and reconstruction, version control, online verification and other functions.

2. A smart substation secondary system multidimensional information model delivery solution according to claim 1, characterized in that: The step S1 also includes classifying the secondary system multi-dimensional information by substation, bay, cabinet / equipment, device / component, etc., importing data through a standard EXCEL spreadsheet mode, and uploading related link files to the management system as attachments.

3. A smart substation secondary system multi-dimensional information model delivery solution according to claim 2, characterized in that: The model decoupling rules in step S2 include: formulating the intervals and device types that need to be screened, automatically screening according to the screening rule library, and visually displaying the screening results to the user for fine-tuning; at the same time, setting the permissions of the boundary devices to be unmodifiable and only having read-only permissions.

4. A smart substation secondary system multi-dimensional information model delivery solution according to claim 3, characterized in that: The model file management and delivery process in step S3 also includes: the user configures the model decoupling rules through the visual interface, requests the model decoupling service from the version management server, and modifies the decoupled model file; after the modification is completed, the user requests the model reconstruction service from the version management server, and performs version release and online verification.

Images