Automatic generation method for safety management and control measures of secondary equipment of intelligent substation

Abstract

The invention provides an automatic generation method for safety management and control measures of secondary equipment of an intelligent substation, and belongs to the technical field of operation and inspection of intelligent substations. Comprising the following steps: constructing a safety measure target model according to an intelligent substation SCD file; perfecting a secondary safety measure operation object in the safety measure target model; adding a safety measure rule for the safety measure target model; according to secondary equipment to be overhauled, secondary equipment safety measures are generated by using the safety measure object model; and automatically generating a secondary safety measure management and control diagram and a secondary safety measure ticket. According to the invention, digital modeling is carried out on the primary and secondary equipment of the intelligent substation and the association relationship thereof, so that automatic functions of automatic generation of secondary safety measures, automatic drawing of a secondary safety measure management and control diagram, automatic issuing of a secondary safety measure ticket and the like are realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of operation and maintenance of intelligent substations, and specifically relates to a method for automatically generating safety management and control measures for secondary equipment of intelligent substations. Background Art

[0002] Smart substations are composed of highly reliable and highly integrated equipment. They use efficient network communication technology as the basis for information exchange, automatically complete information collection, measurement and control, protection and other functions, and can support advanced application functions such as intelligent grid regulation, collaborative interaction, and online diagnosis and decision-making. In my country, the construction of smart substations is currently based on the IEC61850 protocol.

[0003] Reliable secondary equipment safety control measures (secondary safety measures) are the basis for the safe implementation of relay protection on-site work. However, the current method used is for maintenance personnel to review drawings, conduct on-site surveys, and manually fill out work tickets, which is time-consuming and labor-intensive, and has a low degree of standardization. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for automatically generating safety management and control measures for secondary equipment in an intelligent substation.

[0005] In order to solve one, part or all of the above technical problems, the technical solution adopted by the present invention is: A method for automatically generating safety control measures for secondary equipment in a smart substation, comprising: Construct security target model according to the SCD file of smart substation; Improve the secondary security measures operation object in the security measures target model; Adding security measures rules to the security measures target model; According to the secondary equipment to be repaired, generating secondary equipment safety measures using the safety measure object model; Automatically generate secondary safety measures control map and secondary safety measures ticket.

[0006] Furthermore, the method for constructing a safety target model according to the SCD file of the smart substation includes: Parse the SCD file, build a primary loop model according to the topological relationship between the primary equipment and the primary system, and build a secondary loop model according to the topological relationship between the secondary equipment and the secondary system; according to the association relationship between the primary equipment and the secondary equipment, connect the primary loop model and the secondary loop model to form the security target model.

[0007] Furthermore, the method for improving the secondary security measure operation object in the security measure target model includes: Parsing the SCD file, and adding the soft pressure plate obtained after parsing to the security target model; Identify the substation CAD drawings, analyze the components corresponding to various graphic elements and the connection relationships between the components, identify the physical components of the secondary safety measures operation objects, compare them with the secondary circuit model, and add the missing physical components in the model to the safety measures target model.

[0008] Furthermore, the method for identifying the substation CAD drawing includes: Using machine learning methods, we collect images of different graphics elements and use naming rules to build a data set; Train the recognition model through the data set; Use the recognition model to identify the corresponding components from the drawings; According to the direction of the connecting lines in the drawing, identify the connection relationship between different components.

[0009] Furthermore, the method of adding security measures rules to the security measures target model includes: Adding corresponding operation methods for the secondary security operation objects in the security target model; Associate the security measure rules with the secondary security measure operation object.

[0010] Furthermore, the security measure rules include an operation object, an operation method and an operation device.

[0011] Furthermore, the method of generating secondary equipment safety measures using the safety measure object model includes: According to the secondary equipment to be repaired, determining the maintenance scope of the secondary equipment in the safety measure object model; According to the logical relationship between the secondary devices in the safety measure object model, the secondary safety measure operation object that acts as an isolation point between the normal working equipment and the equipment to be inspected is clarified, the operation mode of the selected secondary safety measure operation object is determined according to the safety measure rules, and the secondary equipment safety measures are generated.

[0012] Furthermore, the identified CAD drawings include: drawing catalogs, secondary schematics, panel cabinet drawings, device backplane drawings, component wiring diagrams, optical cable connection diagrams and terminal block diagrams; the physical components identified from the CAD drawings include: optical fibers, switches, devices, power supplies, panel cabinets, terminal boxes, buttons, terminals and pressure plates.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes automatic functions such as automatic generation of secondary safety measures, automatic drawing of secondary safety measures control diagrams, and automatic issuance of secondary safety measures tickets by digitally modeling the primary and secondary equipment of the smart substation and their associations.

[0014] The present invention can improve the digitization and intelligence level of secondary on-site work, save manpower, improve work efficiency, solve the problem of insufficient carrying capacity, effectively reduce the risk of incorrect protection action caused by inadequate execution and recovery of safety measures during on-site work, and avoid power outages caused by inadequate safety control to the greatest extent. DETAILED DESCRIPTION

[0015] In order to better understand the present invention, the content of the present invention is further clearly set forth in conjunction with the embodiments below, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0016] First, the common terms in the art involved in the embodiments of the present application are explained: IED: Intelligent electronic device is the basic element of smart grid, providing the detection, measurement, protection and control functions required by the system.

[0017] SCD: Substation configuration description, used to describe the substation primary system structure and associated logical nodes, the instance configuration and communication parameters of all IEDs, and the communication configuration between IEDs. The SCD file is in XML format, and the parsing method of the SCD file is conventional technology, which will not be elaborated in this application.

[0018] Embodiment 1: The purpose of this embodiment is to provide a method for automatically generating safety management and control measures for secondary equipment in a smart substation.

[0019] S1. Construct the security target model according to the SCD file of the smart substation.

[0020] The SCD file of the smart substation records the primary system topology of the smart substation, the relationship between primary and secondary equipment, and all IED information of the entire station.

[0021] This step parses the SCD file, builds a primary loop model based on the topological relationship between the primary equipment and the primary system, and builds a secondary loop model based on the topological relationship between the secondary equipment and the secondary system; according to the association between the primary equipment and the secondary equipment, the primary loop model and the secondary loop model are connected to form the security target model.

[0022] S2. Perfecting the secondary security measures operation objects in the security measures target model.

[0023] In addition to secondary equipment, the operating objects of secondary equipment safety control measures also involve soft pressure plates, hard pressure plates and other physical components in the secondary system, so this step also adds these components to the safety target model. Hard pressure plates include protection function pressure plates and export pressure plates. The protection function pressure plates realize certain functions of the protection device (such as the activation and deactivation of the main protection, distance protection, zero-sequence protection, etc.); the export pressure plate determines the result of the protection action. According to the different objects of the protection action export, it can be divided into trip export pressure plates and start pressure plates. Soft pressure plates include functional soft pressure plates, GOOSE sending pressure plates, GOOSE receiving pressure plates, and SV receiving soft pressure plates.

[0024] The soft pressure plate related information is recorded under the IED node of the SCD file. By parsing the SCD file, the soft pressure plate information and the corresponding position can be obtained, and then the soft pressure plate is added to the security target model.

[0025] All IEDs are provided with maintenance hard pressure plates, and intelligent terminals are equipped with export hard pressure plates, so the hard pressure plate information of these devices is added to the security measure target model.

[0026] The most accurate information about physical components exists in the CAD drawing file of the substation. This step identifies the substation CAD drawing, analyzes the components corresponding to various graphic elements and the connection relationship between the components, and identifies the physical components of the secondary safety operation objects based on the logical relationship between the various drawings. It compares them with the secondary circuit model in the safety target model, and adds the missing components in the model to the safety target model.

[0027] The CAD drawings identified in this step include: drawing catalog, secondary schematic diagram, panel cabinet diagram, device backplane diagram, component wiring diagram, optical cable connection diagram and terminal block diagram. The physical components identified include optical fiber, switch, device, power supply, panel cabinet, terminal box, button, terminal and pressure plate.

[0028] Based on the drawing specifications of substation design drawings, similar components all use the same graphics elements, and the naming of different types of equipment follows certain characteristic rules. Therefore, for the recognition of CAD drawings, machine learning methods can be used to build a data set by collecting images of different graphics elements, naming rules and other data. The recognition model is trained through the data set. The corresponding components can be identified from the drawings using the recognition model, and then the connection relationship between different components can be identified according to the direction of the connecting lines in the drawings.

[0029] S3. Add security measures rules to the security measures target model.

[0030] This step first adds corresponding operation modes to the secondary safety measures operation objects in the safety measures target model. For example, a function pressure plate has operation modes of on and off, and its operation purposes are to put XX function on and off XX function respectively; another example is a tripping outlet pressure plate of a protection device, and its operation modes are on and off, and its operation purposes are to put the protection function on and off the protection function respectively; another example is an optical fiber, a switch element or a terminal element, and its operation modes are open and closed.

[0031] The safety measure rules include three parts: operation object, operation mode and operation device. The operation object is the operation object of the secondary safety measure, and the operation device is the secondary device corresponding to the operation object. For example, if a safety measure is to exit the SV receiving soft pressure plate of a certain protection device, then the operation object is the SV receiving soft pressure plate, the operation mode is exit, and the operation device is the protection device.

[0032] Then, the security measure rules are added to the security measure target model, and the rules are associated with the secondary security measure operation objects.

[0033] S4. Generate secondary equipment safety measures based on the secondary equipment to be repaired using the safety measure object model.

[0034] According to the secondary equipment to be repaired, the maintenance scope of the secondary equipment is determined in the safety measure object model, and then according to the logical relationship between the secondary equipment, the isolation point between the normally working equipment and the equipment to be inspected is clarified, and the secondary safety measure operation object serving as the isolation point is selected. The operation mode of the selected secondary safety measure operation object is determined according to the safety measure rules, and the secondary equipment safety measures are automatically generated.

[0035] S5. Automatically generate secondary security control map and secondary security ticket.

[0036] According to the secondary equipment to be repaired, the secondary safety measure operation object and the secondary equipment safety measures generated in step S4, a secondary safety measure ticket is automatically generated according to the secondary safety measure ticket template, and a visual secondary safety measure control diagram is automatically drawn.

[0037] The secondary safety measures control diagram is used to visually display the equipment and components affected by the implementation of secondary safety measures.

[0038] In one embodiment of generating a secondary safety measure control diagram, an overall block diagram is first generated, which includes the secondary equipment to be repaired, the secondary equipment affected by the secondary safety measure operation object, and other secondary equipment connected to these secondary equipment, and each secondary equipment can be replaced by a wireframe. Then, according to the secondary safety measure operation object, the secondary safety measure operation object is added to the wireframe of the corresponding secondary equipment, the wireframe of the corresponding secondary equipment is bolded or a background color is added to highlight it, and the connection relationship of the secondary safety measure operation object is added in the form of a connection line.

[0039] In another implementation of generating a secondary safety measure control diagram, firstly, a secondary safety measure control diagram template is generated based on all secondary devices and secondary safety measure operation objects in the safety measure target model, in which wireframes are used to represent secondary devices, sub-wireframes in the wireframes of secondary devices represent other secondary safety measure operation objects, and lines between wireframes represent the connection relationship between secondary safety measure operation objects. When it is necessary to generate a secondary safety measure control diagram, elements corresponding to the secondary devices to be repaired, secondary safety measure operation objects, secondary devices affected by the secondary safety measure operation objects, and other secondary devices connected to these secondary devices are retained according to the secondary safety measure control diagram template, and other elements are hidden.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for automatically generating safety control measures for secondary equipment in a smart substation, characterized in that: include: Construct security target model according to the SCD file of smart substation; Improve the secondary security measures operation object in the security measures target model; Adding security measures rules to the security measures target model; According to the secondary equipment to be repaired, generating secondary equipment safety measures using the safety measure object model; Automatically generate secondary safety measures control map and secondary safety measures ticket.

2. The method for automatically generating safety management and control measures for secondary equipment in smart substations according to claim 1 is characterized in that: The methods for constructing the security target model based on the SCD file of the smart substation include: Parse the SCD file, build a primary loop model according to the topological relationship between the primary equipment and the primary system, and build a secondary loop model according to the topological relationship between the secondary equipment and the secondary system; according to the association relationship between the primary equipment and the secondary equipment, connect the primary loop model and the secondary loop model to form the security target model.

3. The method for automatically generating safety management and control measures for secondary equipment in smart substations according to claim 1 is characterized in that: The method for improving the secondary security measure operation object in the security measure target model includes: Parsing the SCD file, and adding the soft pressure plate obtained after parsing to the security target model; Identify the substation CAD drawings, analyze the components corresponding to various graphic elements and the connection relationships between the components, identify the physical components of the secondary safety measures operation objects, compare them with the secondary circuit model, and add the missing physical components in the model to the safety measures target model.

4. The method for automatically generating safety management and control measures for secondary equipment in smart substations according to claim 3 is characterized in that: Methods for identifying substation CAD drawings include: Using machine learning methods, we collect images of different graphics elements and use naming rules to build a data set; Train the recognition model through the data set; Use the recognition model to identify the corresponding components from the drawings; According to the direction of the connecting lines in the drawing, identify the connection relationship between different components.

5. The method for automatically generating safety management and control measures for secondary equipment in smart substations according to claim 1 is characterized in that: The method of adding security measures rules to the security measures target model includes: Adding corresponding operation methods for the secondary security operation objects in the security target model; Associate the security measure rules with the secondary security measure operation object.

6. The method for automatically generating safety management and control measures for secondary equipment in smart substations according to claim 5 is characterized in that: The security measures rules include operation objects, operation methods and operation equipment.

7. The method for automatically generating safety management and control measures for secondary equipment in a smart substation according to claim 1 is characterized in that: The method for generating secondary equipment safety measures using the safety measure object model includes: According to the secondary equipment to be repaired, determining the maintenance scope of the secondary equipment in the safety measure object model; According to the logical relationship between the secondary devices in the safety measure object model, the secondary safety measure operation object that acts as an isolation point between the normal working equipment and the equipment to be inspected is clarified, the operation mode of the selected secondary safety measure operation object is determined according to the safety measure rules, and the secondary equipment safety measures are generated.

8. The method for automatically generating safety management and control measures for secondary equipment in smart substations according to claim 3 is characterized in that: The identified CAD drawings include: drawing catalog, secondary schematic diagram, panel cabinet diagram, device backplane diagram, component wiring diagram, optical cable connection diagram and terminal block diagram; the physical components identified from the CAD drawings include: optical fiber, switch, device, power supply, panel cabinet, terminal box, button, terminal and pressure plate.