Photoelectric loop intelligent connection method of substation secondary system

Abstract

The invention discloses an intelligent connection method for a photoelectric loop of a substation secondary system, and particularly relates to the field of substation secondary systems, comprising the following steps: designing a logic model structure of the secondary system; establishing an optical / electric loop connection template database; intelligent connection and cable assembly of core wires are realized based on an SPD model and an optical / electric loop connection template; and identifying a schematic diagram provided by a manufacturer and a terminal pattern and a terminal strip pattern in a terminal strip diagram, and matching a system electric loop model to perform intelligent diagram output. According to the method, the IPD, CPD and SPD models are constructed, the optical / electric loop connection template database is established, intelligent connection and cable assembly of the core wires are achieved, the drawing provided by a manufacturer is automatically recognized for intelligent drawing output, the efficiency of design, debugging and operation and maintenance of the secondary system of the transformer substation is improved, the consistency of the models in all links is ensured, and the reliability of the transformer substation is improved. And standardized sharing of the data model is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substation secondary systems, and more specifically, to an intelligent connection method for photoelectric circuits of a transformer substation secondary system. Background Art

[0002] Smart substations use advanced, reliable, integrated and environmentally friendly smart equipment, with the basic requirements of digitalization of all station information, networking of communication platforms, and standardization of information sharing. They automatically complete basic functions such as information collection, measurement, control, protection, metering and detection, and support advanced functions such as real-time automatic control of power grids, intelligent regulation, online analysis and decision-making, and collaborative interaction. With the continuous advancement of related technologies, smart substations have continued to develop and have gone through different stages such as smart stations, new generation smart stations, modular smart stations, and smart stations (third generation stations).

[0003] As the requirements for the three-dimensional design of power grid projects and the application of digital management of power grid projects gradually deepen, various design units generally use three-dimensional design software for engineering design. The primary electrical profession can use digital design methods to complete the main wiring diagram, electrical distribution device design, cable laying, three-dimensional lightning protection verification, three-dimensional safety clearance verification, comprehensive collision inspection, extraction of horizontal and vertical drawings and axonometric drawings; the civil engineering profession can use digital design methods to complete the foundation, support structure, channel, water and heating pipes, and main building modeling work, and generate support installation drawings. The secondary electrical profession can only realize the three-dimensional display of secondary screen cabinets in the three-dimensional platform, and has not deepened the application of digital technology.

[0004] The manufacturing-design-debugging-operation and maintenance link is currently unable to output standardized, digitalized complete optoelectronic circuit models, drawings, and documents to the next link. After the design drawings are handed over to the monitoring system integrator, the integrator needs to re-model the entire station data according to the design drawings. The construction efficiency is low, the consistency of the models in each link cannot be verified, and the degree of multi-party collaboration and data sharing is insufficient. Therefore, in recent years, in order to achieve panoramic modeling of substations, standardize and share data models, and improve engineering construction efficiency, design institutes, equipment manufacturing integrators, and software manufacturers have conducted research on modeling and intelligent connection of secondary related equipment, optical circuits, electrical circuits, etc. of smart substations.

[0005] Based on the above problems, the present invention proposes an intelligent connection method for the photoelectric circuit of the secondary system of a substation. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a method for intelligently connecting a photoelectric circuit of a secondary system of a substation to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for intelligently connecting a photoelectric circuit of a secondary system of a substation, comprising the following steps:

[0008] S1: Secondary system logic model structure design:

[0009] IPD (single device physical capability description), CPD (panel cabinet physical capability description) and SPD (substation capability description) models are constructed to describe the physical and logical characteristics of the substation secondary system.

[0010] The IPD model describes the logical nodes and logical associations of the device and the relevant physical characteristics of the device;

[0011] The CPD model includes the secondary cabinet model with attributes such as physical characteristics, logical information, installation location, and the actual connection relationship inside the cabinet;

[0012] The SPD model organizes all CPD models and their instantiations, and adds Cable elements to represent the connections between cabinets such as cables, optical cables, and network cables.

[0013] S2: Establishing the optical / electrical circuit connection template database:

[0014] According to different functional types, the external interfaces of secondary equipment are divided into different loop modules;

[0015] Build a template library for electrical and optical circuits to support flexible assembly between modules to meet the requirements of different screen grouping solutions;

[0016] The database architecture includes data source, data collection layer, data storage layer, data interface layer and data application layer to realize centralized control, storage, management and sharing of data.

[0017] S3: Intelligent connection and cabling of core wires based on SPD model and optical / electrical circuit connection template:

[0018] Analyze the CPD model of the panel cabinet and store it in the database in fragments;

[0019] During design, the optical / electrical circuit design template is used in cabinets to perform intelligent core wire connection and cabling.

[0020] Designers check the intelligent design results and adjust the parts that do not meet the design requirements.

[0021] S4: Identify the terminal graphics and terminal strip graphics in the schematic diagram and terminal strip diagram provided by the manufacturer, and match the system electrical circuit model for intelligent drawing:

[0022] Schematic diagram drawing includes manual drawing, automatic drawing with default style and automatic drawing with template. Figure 3 Ways;

[0023] Terminal arrangement drawing includes two modes: automatic drawing and identification of manufacturer's terminal arrangement drawing;

[0024] Optical circuit diagram output includes installation optical circuit diagram and optical distribution diagram.

[0025] Preferably, the IPD model uses a Device-SubDevice-Pin or Device-Pin hierarchical structure to characterize all devices, and combines the functions formed by different connection points into a functional element Component under the device.

[0026] Preferably, the CPD model is instantiated according to the IPD models of all devices referenced in the panel cabinet, defines the connection Core element to represent the actual internal wire, optical cable and other types of connections of the panel cabinet, and extracts the external logical interface of the panel cabinet.

[0027] Preferably, in addition to organizing all CPD models and model instantiations, the SPD model also adds Cable elements to uniformly represent cables, optical cables, network cables, etc. between cabinets, and includes area and interval elements to index devices and cabinets.

[0028] Preferably, the construction of the optical / electrical circuit template library is mainly based on the typical main wiring single-line diagram of the substation, with different types of main wiring intervals as units. According to the different characteristics of cable circuits and optical cable circuits, basic functional modules are created to establish a cable circuit template library.

[0029] Preferably, it also includes parsing the connection rules of the current design cabinet and screen cabinet, building a set of alternative optical / electrical circuits, and using keyword semantic analysis and Siamese model matching algorithm for automatic matching to achieve intelligent connection design of optical / electrical circuits.

[0030] Technical effects and advantages of the present invention:

[0031] 1. Through the intelligent photoelectric circuit connection method, standardization, digital model and data sharing are achieved from design to commissioning, operation and maintenance. This reduces the data modeling work of integrators, shortens the overall construction cycle, and significantly improves the efficiency of engineering construction.

[0032] 2. This method constructs a complete logical model system from SPD (substation capability description), CPD (panel cabinet physical capability description) to IPD (single device physical capability description), ensuring the consistency of models in each link and facilitating multi-party collaboration and data verification.

[0033] 3. The modular database construction technology is used to standardize the data provided by equipment manufacturers, integrators, design units and commissioning units in each link of the engineering project, breaking the data barriers of manufacturing-design-commissioning-operation and maintenance, and improving the sharing and availability of data.

[0034] 4. Through the construction of optical / electrical circuit template library and intelligent connection algorithm, intelligent connection and cabling of core wires are realized, which reduces the complexity of designers' work and improves design accuracy and efficiency.

[0035] 5. This method not only supports the intelligent generation of schematic diagrams and terminal strip diagrams, but also can accurately identify and intelligently produce drawings based on the terminal strip diagrams provided by the manufacturer, further improving the degree of automation and accuracy of the drawings.

[0036] 6. The optical / electrical circuit template library supports flexible assembly and can adapt to the requirements of different panel grouping solutions, meeting the diverse design needs of substations.

[0037] 7. Through panoramic modeling and standardized sharing of data models, the operation and maintenance of substations are made more efficient, potential problems can be discovered and solved in a timely manner, and the operational reliability and stability of substations are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural analysis diagram of various devices of the present invention.

[0039] Figure 2 It is a schematic diagram of the IPD model structure of the present invention.

[0040] Figure 3 This is a typical screen cabinet layout diagram of the present invention.

[0041] Figure 4 It is a schematic diagram of the power interface of the present invention.

[0042] Figure 5 This is an overview of the CPD model structure of the present invention.

[0043] Figure 6 This is a diagram of the cable terminal arrangement of the present invention.

[0044] Figure 7 It is the optical cable connection diagram of the present invention.

[0045] Figure 8 It is the network connection diagram of the present invention.

[0046] Fig. 9 This is an overview of the SPD model structure of the present invention.

[0047] Fig.10 This is a database architecture diagram of the present invention.

[0048] Fig.11 This is a diagram of the optical / electrical circuit intelligent design method of the present invention.

[0049] Fig.12 The figure is a flow chart of the intelligent connection design of the optical / electrical circuit of the present invention.

[0050] Fig.13 It is a table diagram of the unstructured fields and structured methods of the present invention.

[0051] Fig.14 This is an example diagram of the manual drawing of the principle diagram of the present invention.

[0052] Fig.15 This is an example diagram of the default style of the principle diagram of the present invention.

[0053] Fig.16 This is an example diagram of the schematic diagram template of the present invention.

[0054] Fig.17 This is an example diagram of the automatic drawing of the terminal block of the present invention.

[0055] Fig.18 This is an example diagram of the manufacturer's terminal arrangement diagram of the present invention.

[0056] Fig.19 This is an example diagram of the optical circuit diagram of the device of the present invention.

[0057] Fig. 20 This is an example diagram of the light distribution diagram of the present invention. DETAILED DESCRIPTION

[0058] 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.

[0059] The present invention provides a method for intelligently connecting a photoelectric circuit of a substation secondary system, comprising the following steps:

[0060] S1: Secondary system logic model structure design:

[0061] IPD (single device physical capability description), CPD (panel cabinet physical capability description) and SPD (substation capability description) models are constructed to describe the physical and logical characteristics of the substation secondary system.

[0062] The IPD model describes the logical nodes and logical associations of the device and the relevant physical characteristics of the device;

[0063] The CPD model includes the secondary cabinet model with attributes such as physical characteristics, logical information, installation location, and the actual connection relationship inside the cabinet;

[0064] The SPD model organizes all CPD models and their instantiations, and adds Cable elements to represent the connections between panels, such as cables, optical cables, and network cables.

[0065] S2: Establishing optical / electrical circuit connection template database:

[0066] According to different functional types, the external interfaces of secondary equipment are divided into different loop modules;

[0067] Build a template library for electrical and optical circuits to support flexible assembly between modules to meet the requirements of different screen grouping solutions;

[0068] The database architecture includes data source, data collection layer, data storage layer, data interface layer and data application layer to realize centralized control, storage, management and sharing of data.

[0069] S3: Intelligent connection and cabling of core wires based on SPD model and optical / electrical circuit connection template:

[0070] Analyze the CPD model of the panel cabinet and store it in the database in fragments;

[0071] During design, the optical / electrical circuit design template is used in cabinets to perform intelligent core wire connection and cabling.

[0072] Designers check the intelligent design results and adjust the parts that do not meet the design requirements.

[0073] S4: Identify the terminal graphics and terminal strip graphics in the schematic diagram and terminal strip diagram provided by the manufacturer, and match the system electrical circuit model for intelligent drawing:

[0074] Schematic diagram drawing includes manual drawing, automatic drawing with default style and automatic drawing with template. Figure 3 Ways;

[0075] Terminal arrangement drawing includes two modes: automatic drawing and identification of manufacturer's terminal arrangement drawing;

[0076] Optical circuit diagram output includes installation optical circuit diagram and optical distribution diagram.

[0077] The IPD model uses a hierarchical structure of Device-SubDevice-Pin or Device-Pin to characterize all devices, and combines the functions formed by different connection points into a functional element Component under the device.

[0078] The CPD model is instantiated according to the IPD models of all devices referenced in the panel cabinet, defines the connection Core element to represent the actual internal wire, optical cable and other types of connections of the panel cabinet, and extracts the logical interface of the panel cabinet to the outside.

[0079] In addition to organizing all CPD models and model instantiations, the SPD model also adds Cable elements to uniformly represent cables, optical cables, network cables, etc. between cabinets, and includes area and interval elements to index devices and cabinets.

[0080] The construction of the optical / electrical circuit template library is mainly based on the typical main wiring single-line diagram of the substation, with different types of main wiring intervals as units. According to the different characteristics of cable circuits and optical cable circuits, basic functional modules are created to establish a cable circuit template library.

[0081] It also includes parsing the connection rules of the current design cabinets and panel cabinets, building a set of alternative optical / electrical circuits, and using keyword semantic analysis and Siamese model matching algorithms for automatic matching to achieve intelligent connection design of optical / electrical circuits.

[0082] In specific implementation, the specific steps in step S1 are as follows:

[0083] In view of the current data carrying mode of the secondary system physical model and the requirements of each link for the logical model, IPD (single device physical capability description), CPD (panel cabinet physical capability description), and SPD (substation capability description) are a series of model structures newly proposed for the physical characteristics of the secondary panel cabinet. Among them, IPD describes the logical nodes and logical associations of the device, and the relevant physical characteristics of the device. CPD is a secondary panel cabinet model that includes physical characteristics, logical information, installation location and other attributes, and includes the physical interface model of the station control layer, protection control and other equipment. SPD contains the secondary panel cabinets of the entire station, the primary and secondary interface panel cabinet models, and information such as cables between cabinets.

[0084] IPD device physical model

[0085] There are many devices involved in the secondary system, each of which is different in structure and function. Generally speaking, the structure of the device can be divided into two categories. One is that the connection points and functions of equipment such as relays and pressure plates (such as relay contacts, coils, etc.) are directly hung under the device without sub-equipment. The other is protection or measurement and control equipment. The connection points are generally on the device plug-in, and the specific connection points and functions of the components (such as alarm, tripping, opening, etc.) are hung on the plug-in. The structural analysis of various types of devices is as follows: Figure 1As shown. Therefore, this section takes full account of the characteristics of different devices when constructing the IPD model, and establishes a Device-SubDevice-Pin or Device-Pin hierarchical structure to characterize all devices. And under the device, the functions formed by different connection points are combined into functional components to characterize the specific functions of the device or sub-device.

[0086] The IPD (Individual Device Physical Capability Description) model structure is as follows Figure 2 As shown in the Unified Modeling Language (UML) diagram. The IPD element contains a Device element and a PartTemplates element. The PartTemplates element contains one or more PartTemplate elements. The PartTemplate element contains zero or more Pin elements and ComponentTemplate elements. The ComponentTemplate element contains one or more PinRefs. The Device element contains zero or more SubDevice elements. The Device element and SubDevice elements contain zero or more Part elements. The Part element contains zero or more Component and Pin elements.

[0087] CPD cabinet physical model

[0088] like Figure 3 As shown, whether it is an indoor cabinet, outdoor cabinet, rotating cabinet or other types of cabinets, the logical circuit of the cabinet is the same. The connection points and terminals of different devices are connected through internal connections such as wires or optical cables to form different circuit functions. The same model of device, plug-in, and signal may correspond to different instances in different circuits. Therefore, in view of the above characteristics, first of all, in terms of logical circuits, the CPD cabinet model will instantiate the IPD model based on all the equipment IPD models referenced in the cabinet and the design characteristics of the cabinet. At the same time, the model defines the connection Core element to characterize the actual internal wire, optical cable and other types of connections of the cabinet. In terms of the physical structure of the cabinet itself, due to the differences in device layout and wiring caused by different cabinet structures, when constructing the model, the characteristics of various devices and cabinet structures in the cabinet are considered, and the structural information of the cabinet containing physical characteristics, logical information, installation location and other attributes is established to describe the cabinet.

[0089] In order to meet the needs of design, operation and maintenance for digital circuit functions, the external functional interface of the panel cabinet is extracted and the model is defined as a logical interface. The logical interface is divided into large areas according to the circuits of major components (such as secondary devices, circuit breakers, and switches), and then subdivided according to specific logical functions. The construction of the model panel cabinet interface includes all external logical functions of the panel cabinet, such as input, output, AC and DC power supply, current and voltage input circuits. For the station control layer equipment in the panel cabinet, it is constructed to the device network port, and for the process layer equipment, the device optical port is constructed. Figure 4 Shown are examples of interfaces between terminal boxes and panel cabinets.

[0090] The CPD (panel physical capability description) model structure is as follows Figure 5 As shown in the UML diagram, the CPD element contains a Cubicle element and a PartTemplates element. The Cubicle element contains one or more Device elements, zero or more FunctionArea and Core elements. The FunctionArea element contains one or more Interface elements, and the Interface element contains one or more Point elements.

[0091] Description of the physical capabilities of SPD substations

[0092] According to the design characteristics of the secondary circuit of the whole station, the current design of the cable circuit is to connect the cable circuits between the cabinets based on the terminal blocks in the cabinet drawings, such as Figure 6 The optical cable connection and network port connection between the cabinets are essentially the same as the cable, which is from the connection point of the device or terminal of one cabinet to another device, but the transmission medium is different, such as Figure 7 and Figure 8 Therefore, based on the above characteristics, in addition to organizing all CPD models and model instantiations, the SPD model also adds Cable elements to uniformly represent cables, optical cables, network cables, etc. between cabinets.

[0093] In the actual design process, the areas and intervals of the cabinets and equipment are defined. The cabinets are generally subordinate to a certain area, and the devices in the cabinets are subordinate to a certain interval. Therefore, in order to centrally represent various types of scattered information through the model, when constructing the SPD model, the model adds area and interval elements, the interval indexes the equipment, and the area indexes the cabinet.

[0094] The SPD (substation capability description) model structure is as follows Fig. 9As shown in the UML diagram, the SPD element contains a Substation element and a PartTemplates element. The Substation element contains one or more Region elements and Bay elements. The Region element contains one or more Cubicle elements. The Bay element contains one or more Cable elements and references to multiple Device elements. The Cable element contains zero or more Core elements.

[0095] The specific steps in step S2 are as follows:

[0096] For the electrical circuit and optical circuit template library, the external interface of the secondary equipment is divided into different circuit modules mainly according to different functional types. By sorting out the attribute composition of each circuit module, the electrical circuit and optical circuit template library of the corresponding secondary equipment or panel cabinet is constructed, supporting flexible assembly between the equipment modules of the electrical circuit and optical circuit template library to meet the requirements of different panel grouping solutions.

[0097] The construction of the optical / electrical circuit template library is mainly based on the typical main wiring single-line diagram of the substation, with different types of main wiring intervals as units. According to the different characteristics of cable circuits and optical cable circuits, different types of circuits are created as basic functional modules to establish a cable circuit template library.

[0098] A database is a warehouse that organizes, stores, and manages data according to data structures. It has the characteristics of centralized data control and management, multi-user sharing, low redundancy, data independence, and fault repairability. It is a data collection that is independent of the application. Different users can share data resources in the database at the same time and use the data in the database according to their own usage. Data sharing not only meets the requirements of each user for information content, but also meets the requirements of information communication between users. The database architecture of this project is as follows: Fig.10 shown.

[0099] Data source: The SPD model file defines the core wire and cable group model; the SSD model file defines the primary and secondary device association model.

[0100] Data collection layer: Collect training data source data, parse and process the data and store it in the data layer. By parsing the SPD file, the core wire and cable group relationship model is obtained. The training relationship model is summarized to obtain the connection rules and cable group rules between the cabinets / functional areas / functional groups, forming a modular rule file and storing it in the rule library. By parsing the SSD file, the primary device is associated with the secondary device logical node information, and the training induction model is used to obtain the one-two device association rules. On the basis of meeting the regulations and specifications, the optical / electrical circuit design rules and SSD logical node association rules are manually sorted and stored in the agreed format file.

[0101] Data storage layer: structured storage rule base, template base and original input data. The rule base is used to store the connection rules of the cabinet / functional area / functional group / functional contact, and the association rules of primary and secondary equipment / equipment logical nodes. The template base is used to store the project-level primary and secondary association templates and optical / electrical circuit association templates.

[0102] Data interface layer: provides interface and algorithm support for the data reference layer.

[0103] Data application layer: Intelligent design of optical / electrical circuits, calling the optical / electrical circuit design template based on the cabinet on this side, and performing intelligent core line connection and automatic cable assembly design; intelligent association of SSD logical nodes, calling the primary and secondary equipment association template based on the primary equipment, and performing intelligent design of primary and secondary equipment association.

[0104] The modular database has enriched its usage in various business scenarios, making the database have the ability of a "container" for the first time. In the modular database, users can integrate functions that previously required the support of multiple types of databases through "containers". It will achieve more convenient data storage for scenarios such as search, geolocation, time series, and machine learning, and build a more diversified and three-dimensional way of using the database.

[0105] In order to realize panoramic modeling of substations, standardize and share data models, improve engineering construction efficiency, and store data in template libraries and rule libraries, modular database construction technology is adopted to unify and standardize each link of engineering projects. Equipment manufacturers, integrators, design units, and commissioning units provide configuration file data to break through the data barriers of manufacturing-design-commissioning-operation and maintenance.

[0106] The construction of the optical / electrical circuit template library is mainly based on the typical main wiring single-line diagram of the substation, with different types of main wiring intervals as units. According to the different characteristics of cable circuits and optical cable circuits, different types of circuits are created as basic functional modules, and a cable circuit template library is established for the construction of the modular database of the design software. The construction of the optical / electrical circuit template library mainly refers to the "Logical Model Specification for Power Transmission and Transformation Engineering" (under preparation). In the standard, the Interface element is specified in several types, including power input, power output, DC input, DC output, AC input, AC output, and communication.

[0107] The template library of the optical / electrical circuit is developed based on the related elements of the cubicle physical description file (CPD). In the optical / electrical circuit CPD model, the key characters of the template library are defined as follows:

[0108] 1) FunctionArea definition

[0109] The function area description field FunctionArea in CPD is composed of "secondary equipment name_terminal strip function partition". A unified dictionary needs to be established for the secondary equipment name and terminal strip function partition. The CPD file is modeled according to this rule.

[0110] 2) FunctionGroup, Interface and Point definitions

[0111] The FunctionGroup element represents a functional grouping, which is used to describe a functional grouping of the cabinet to the outside. The Interface element represents an interface, which is used to describe a group of input or output interfaces of the cabinet to the outside. An Interface element contains one or more Point (connection point) elements. The type of the Interface element contains attributes such as name, class, type, and Function. Depending on the interface type, the Interface element can contain different types of Point (interface connection points).

[0112] The Point element represents an interface connection point. It is used to map each connection point of the interface to a connection point of a device in the cabinet. A point can be associated with the connection points of multiple devices.

[0113] FunctionGroup, Interface, and Point are mainly used to structure the export loop definition to meet the requirements of intelligent connection.

[0114] like Fig.11 As shown, the specific steps of step S3 include:

[0115] 1) Analyze the CPD model of the panel cabinet and store the CPD model in fragments in the database;

[0116] 2) During the design process, the optical / electrical circuit design template is used in cabinets to perform intelligent core wire connection and cabling. Designers check the intelligent design results at the front end and adjust the results that do not meet the design requirements;

[0117] 3) After the SPD design is completed, the optical circuit design section calls the drawing style based on the equipment to produce the device drawing and the optical distribution drawing; the electrical circuit design section calls the drawing style based on the cabinet to produce the terminal arrangement drawing and the schematic diagram.

[0118] Based on the research of optical / electrical circuit template library, modular database construction technology is used to construct the attributes of the external interface circuit module of secondary equipment according to different equipment types and function types, which is used to support the matching rules of the electrical circuit modules between secondary equipment. The optical / electrical circuit rule library mainly relies on the standard template library, divides the external circuits of typical secondary equipment into different circuit modules according to function, and establishes matching rules between each circuit module by analyzing the circuit connection relationship between different secondary equipment. The automatic connection of optical / electrical circuits supports the intelligent linkage of the rule library and the template library.

[0119] According to the substation information, the information of the cabinet, device, functional area, functional grouping, interface and core wire is obtained after the cabinet CPD model is parsed. The keyword semantic analysis and Siamese model matching algorithm are used to achieve the connection matching between cabinets and functional area based on the optical / electrical circuit connection template, complete the automatic numbering of cable group and optical / electrical cable, and realize the intelligent connection design of optical / electrical circuit. The flow chart is as follows: Fig.12 shown.

[0120] Core wire intelligent connection method:

[0121] Step 1: Take the cube_name and cube_desc fields of the current design cabinet and the start_cubicle_name and start_cubicle_desc of the cabinet connection rule under the photoelectric circuit design template to perform similarity calculation to obtain n groups of cabinet connection rules that meet the conditions.

[0122] Step 2: Take the cubicle_name and cubicle_desc fields of the entire station's cabinets and the end_cubicle_name and end_cubicle_desc of the above n groups of cabinet connection rules that meet the conditions, and perform similarity calculation to obtain the connection relationship between the current design cabinet and the cabinets of this project.

[0123] Step 3: Construct a set of candidate optical / electrical circuits for all core wires to be connected to the panel cabinet on this side and the matching panel cabinet on the opposite side in each of the above connection relationships, and perform structured data processing on each circuit in the set of candidate optical / electrical circuits. The unstructured fields and structured methods to be processed are shown in Table 1. Fig.13 The candidate optical / electrical circuit set is subjected to structured processing to finally obtain a candidate optical / electrical structured circuit set.

[0124] Step 4: Send the candidate optical / electrical circuit set to the automatic matching algorithm based on keyword semantic analysis. The algorithm automatically calculates the matching distance of all candidate circuits and selects the circuit with the smallest distance as the circuit to be connected. This part of the circuits constitutes the set of optical / electrical circuits to be connected.

[0125] Step 5: Identify each circuit in the optical / electrical circuit set to be connected: if the matching distance is less than or equal to the set threshold of 0.1, it is considered a successful connection and the automatic encoding is completed; if the matching distance is greater than the set threshold, it is considered a failed connection and no additional calculation is performed. Finally, all successfully connected circuits are output as intelligent connection results.

[0126] The specific steps of step S4 include:

[0127] Electrical circuit diagram

[0128] The main graphic elements in the electrical circuit are: schematic terminals, terminal blocks, core wires, cables, etc. Since the secondary system involves a large number of manufacturers and products, it is necessary to accurately identify the terminals and terminal blocks first and then perform graphic conversion.

[0129] (1) Schematic diagram

[0130] The schematic diagram is drawn based on the starting cabinet. There are three ways to draw: manual drawing, automatic drawing with default style, and automatic drawing with template. When drawing, the SPD model information is obtained from the database and converted into a drawing model based on the RX technology according to the drawing style for drawing.

[0131] 1) Manual drawing of schematic diagram

[0132] like Fig.14 As shown, the SPD model designed in the database is called through the terminal, and [Automatic Fiber Core], [Terminal Summarization], and [Core Summarization] are executed to draw the schematic diagram.

[0133] 2) Schematic default style drawing

[0134] like Fig.15 As shown, define the terminal style, core wire style, panel cabinet style, and cable style, and define the layout rules within the program for automatic drawing.

[0135] 3) Schematic diagram template drawing

[0136] like Fig.16 As shown, the RX technology and the drawing-model integration technology are used to pre-draw the drawing template, which contains the attribute information of the SPD model. When designing a new project, the drawing template is called to match the SPD model information and refresh the terminal number, loop number, cable number and other information.

[0137] (2) Terminal arrangement diagram

[0138] The terminal blocks are drawn based on the terminal blocks of the cabinet on this side. There are two modes: automatic drawing and identification of the manufacturer's terminal blocks.

[0139] 1) Automatic drawing of terminal strips

[0140] like Fig.17 As shown, the automatic drawing style is defined. The drawing style consists of terminal strip style, cable style, core wire style, drawing orientation, etc. When designing the drawing, the drawing style is called, combined with the SPD model information, and the drawing model is automatically generated based on RX technology.

[0141] 2) Manufacturer's terminal layout diagram

[0142] like Fig.18 As shown, the manufacturer's terminal row orientation information and terminal position information are identified, the drawing method is defined, the cable style and core wire style are called, and the drawing model is automatically generated based on RX technology.

[0143] Optical Circuit Diagram

[0144] The main graphic elements in the optical circuit are: equipment / board / port, optical distribution / port, core wire, optical cable, tail cable, etc.

[0145] 1) Device optical circuit diagram

[0146] like Fig.19 As shown, the optical circuit device diagram is drawn based on the device. When drawing, the SPD model information is obtained from the database, the device drawing style is called, and the drawing style is converted into a drawing model based on the RX technology for drawing.

[0147] 2) Light matching

[0148] like Fig. 20 As shown, the optical circuit optical distribution diagram is drawn based on the optical distribution as a unit. When drawing, the SPD model information is obtained from the database, the optical distribution output style is called, and the output style is converted into a drawing model based on the RX technology for drawing.

[0149] 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 method for intelligently connecting photoelectric circuits of a secondary system of a substation, characterized in that: The following steps are involved: S1: Secondary system logic model structure design: IPD (single device physical capability description), CPD (panel cabinet physical capability description) and SPD (substation capability description) models are constructed to describe the physical and logical characteristics of the substation secondary system. The IPD model describes the logical nodes and logical associations of the device and the relevant physical characteristics of the device; The CPD model includes the secondary cabinet model with attributes such as physical characteristics, logical information, installation location, and the actual connection relationship inside the cabinet; The SPD model organizes all CPD models and their instantiations, and adds Cable elements to represent the connections between cabinets such as cables, optical cables, and network cables. S2: Establishing the optical / electrical circuit connection template database: According to different functional types, the external interfaces of secondary equipment are divided into different loop modules; Build a template library for electrical and optical circuits to support flexible assembly between modules to meet the requirements of different screen grouping solutions; The database architecture includes data source, data collection layer, data storage layer, data interface layer and data application layer to realize centralized control, storage, management and sharing of data. S3: Intelligent connection and cabling of core wires based on SPD model and optical / electrical circuit connection template: Analyze the CPD model of the panel cabinet and store it in the database in fragments; During design, the optical / electrical circuit design template is used in cabinets to perform intelligent core wire connection and cabling. Designers check the intelligent design results and adjust the parts that do not meet the design requirements. S4: Identify the terminal graphics and terminal strip graphics in the schematic diagram and terminal strip diagram provided by the manufacturer, and match the system electrical circuit model for intelligent drawing: Schematic diagram drawing includes three methods: manual drawing, automatic drawing with default style and automatic drawing with template; Terminal arrangement drawing includes two modes: automatic drawing and identification of manufacturer's terminal arrangement drawing; Optical circuit diagram output includes installation optical circuit diagram and optical distribution diagram.

2. The method for intelligently connecting photoelectric circuits of a substation secondary system according to claim 1 is characterized in that: The IPD model uses a hierarchical structure of Device-SubDevice-Pin or Device-Pin to characterize all devices, and combines the functions formed by different connection points into a functional element Component under the device.

3. The method for intelligently connecting photoelectric circuits of a secondary system of a substation according to claim 1, characterized in that: The CPD model is instantiated according to the IPD models of all devices referenced in the panel cabinet, defines the connection Core element to represent the actual internal wire, optical cable and other types of connections of the panel cabinet, and extracts the logical interface of the panel cabinet to the outside.

4. The method for intelligently connecting photoelectric circuits of a substation secondary system according to claim 1, characterized in that: In addition to organizing all CPD models and model instantiations, the SPD model also adds Cable elements to uniformly represent cables, optical cables, network cables, etc. between cabinets, and includes area and interval elements to index devices and cabinets.

5. The method for intelligently connecting photoelectric circuits of a substation secondary system according to claim 1, characterized in that: The construction of the optical / electrical circuit template library is mainly based on the typical main wiring single-line diagram of the substation, with different types of main wiring intervals as units. According to the different characteristics of cable circuits and optical cable circuits, basic functional modules are created to establish a cable circuit template library.

6. The method for intelligently connecting photoelectric circuits of a substation secondary system according to claim 1, characterized in that: It also includes parsing the connection rules of the current design cabinets and panel cabinets, building a set of alternative optical / electrical circuits, and using keyword semantic analysis and Siamese model matching algorithms for automatic matching to achieve intelligent connection design of optical / electrical circuits.

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