Automatic generation method of safety control measures for secondary equipment in smart substations

Abstract

The present invention provides a method for automatically generating safety management and control measures for secondary equipment in a smart substation, and belongs to the field of operation and maintenance technology for smart substations. The method comprises: constructing a safety measure target model based on the SCD file of the smart substation; improving the secondary safety measure operation objects in the safety measure target model; adding safety measure rules to the safety measure target model; generating secondary equipment safety measures based on the secondary equipment to be repaired using the safety measure object model; and automatically generating a secondary safety measure management and control diagram and a secondary safety measure ticket. The present invention realizes automated functions such as the automatic generation of secondary safety measures, the automatic drawing of secondary safety measure management and control diagrams, and the automatic issuance of secondary safety measure tickets by digitally modeling the primary and secondary equipment of the smart substation and their associated relationships.

Description

Technical Field

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

[0002] Smart substations are composed of highly reliable and integrated equipment. They utilize efficient network communication technology as the foundation for information exchange, automatically completing functions such as information collection, measurement and control, and protection. They also support advanced applications such as intelligent grid regulation, collaborative interaction, and online diagnostics and decision-making. In my country, the current construction of smart substations is 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 of 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:

[0006] A method for automatically generating safety control measures for secondary equipment in a smart substation, comprising:

[0007] Construct security target model based on smart substation SCD file;

[0008] Improve the secondary security measures operation object in the security measures target model;

[0009] Adding security measures rules to the security measures target model;

[0010] Generating secondary equipment safety measures using the safety measure object model according to the secondary equipment to be repaired;

[0011] Automatically generate secondary security control map and secondary security ticket.

[0012] Furthermore, the method of constructing a safety measure target model based on the smart substation SCD file includes:

[0013] Parse the SCD file, build a primary loop model based on the topological relationship between the primary equipment and the primary system, and build a secondary loop model based on 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.

[0014] Furthermore, the method for improving the secondary security measure operation object in the security measure target model includes:

[0015] Parsing the SCD file, and adding the soft pressure plate obtained after parsing to the security target model;

[0016] 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 operation objects, compare them with the secondary circuit model, and add the missing physical components in the model to the safety target model.

[0017] Furthermore, the method for identifying the substation CAD drawing includes:

[0018] Using machine learning methods, we collect images of different graphics elements and use naming rules to build a data set;

[0019] Train the recognition model using the data set;

[0020] Use the recognition model to identify the corresponding components from the drawings;

[0021] Identify the connection relationship between different components based on the direction of the connecting lines in the drawing.

[0022] Furthermore, the method of adding security measures rules to the security measures target model includes:

[0023] Adding corresponding operation methods for the secondary security operation objects in the security target model;

[0024] Associate the security measure rules with the secondary security measure operation object.

[0025] Furthermore, the security measure rules include an operation object, an operation method and an operation device.

[0026] Furthermore, the method for generating secondary device safety measures using the safety measure object model includes:

[0027] Determining the secondary equipment maintenance scope in the security measure object model according to the secondary equipment to be repaired;

[0028] According to the logical relationship between the secondary devices in the safety measure object model, the secondary safety measure operation object that serves as the 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 measure is generated.

[0029] 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.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention realizes automatic functions such as automatic generation of secondary safety measures, automatic drawing of secondary safety measures control diagram and automatic issuance of secondary safety measures tickets by digitally modeling the primary and secondary equipment of the smart substation and their associated relationships.

[0032] The present invention can improve the digitalization and intelligence level of secondary field work, save manpower, improve work efficiency, solve the problem of insufficient carrying capacity, effectively reduce the risk of incorrect protection action caused by inadequate implementation and recovery of safety measures during field work, and avoid power grid blackouts caused by inadequate safety management and control to the greatest extent. DETAILED DESCRIPTION

[0033] In order to better understand the present invention, the content of the present invention is further clearly set forth below in conjunction with the examples, but the protection content of the present invention is not limited to the following examples. 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.

[0034] First, the common terms in the art involved in the embodiments of this application are explained:

[0035] IED: Intelligent electronic device is a basic element of smart grid, providing the detection, measurement, protection and control functions required by the system.

[0036] SCD: Substation Configuration Description (SCD) describes the substation primary system structure and associated logical nodes, as well as the instance configuration and communication parameters of all IEDs and the communication configuration between IEDs. SCD files are in XML format. Parsing SCD files is conventional and will not be explained in detail in this application.

[0037] Example 1: The purpose of this example is to provide a method for automatically generating safety management and control measures for secondary equipment in a smart substation.

[0038] S1. Build a security target model based on the SCD file of the smart substation.

[0039] 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.

[0040] 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; based on the association relationship between the primary and secondary equipment, the primary loop model and the secondary loop model are connected to form the security target model.

[0041] S2. Perfecting the secondary security measure operation objects in the security measure target model.

[0042] In addition to the secondary equipment, secondary equipment safety control measures also involve soft pressure plates, hard pressure plates, and other physical components within the secondary system. Therefore, this step also adds these components to the safety measure target model. Hard pressure plates include protection function pressure plates and output pressure plates. Protection function pressure plates implement certain functions of the protection device (such as the activation and deactivation of main protection, distance protection, and zero-sequence protection). Output pressure plates determine the outcome of the protection action and can be categorized as trip output pressure plates and start pressure plates, depending on the target of the protection action output. Soft pressure plates include function soft pressure plates, GOOSE send pressure plates, GOOSE receive pressure plates, and SV receive soft pressure plates.

[0043] 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 can be added to the security target model.

[0044] All IEDs are equipped 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 safety measure target model.

[0045] 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 security operation objects based on the logical relationship between the various drawings. It then compares them with the secondary circuit model in the security target model and adds the missing components in the model to the security target model.

[0046] The CAD drawings identified in this step 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 include optical fibers, switches, devices, power supplies, panel cabinets, terminal boxes, buttons, terminals, and pressure plates.

[0047] Based on the drawing specifications of substation design drawings, similar components all use the same graphic 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 graphic elements, naming rules and other data. The recognition model is trained through the data set. The recognition model can be used to identify the corresponding components from the drawings, and then the connection relationship between different components can be identified according to the direction of the connecting lines in the drawings.

[0048] S3. Add security measures rules to the security measures target model.

[0049] This step first adds corresponding operation modes to the secondary safety measure operation objects in the safety measure target model. For example, a function pressure plate has two operation modes: on and off, with the operation purposes being to enable or disable the XX function, respectively. Another example is a protection device's trip output pressure plate, with two operation modes: on and off, with the operation purposes being to enable or disable the protection function, respectively. Furthermore, an optical fiber, switch element, or terminal element has two operation modes: open and close.

[0050] 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.

[0051] 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.

[0052] S4. Generate secondary equipment safety measures based on the secondary equipment to be repaired using the safety measure object model.

[0053] According to the secondary equipment to be repaired, the maintenance scope of the secondary equipment is determined in the safety measure object model. Then, based on the logical relationship between the secondary equipment, the isolation point between the normally operating 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.

[0054] S5. Automatically generate secondary security control map and secondary security ticket.

[0055] 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.

[0056] The secondary safety measures control diagram is used to visually display the equipment and components affected by the implementation of secondary safety measures.

[0057] In one embodiment of generating a secondary safety measure control diagram, a block diagram is first generated. The block diagram includes the secondary equipment to be repaired, the secondary equipment affected by the secondary safety measure operation, and other secondary equipment connected to these secondary equipment. Each secondary equipment is represented by a wireframe. Then, based on the secondary safety measure operation, 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 highlighted with a background color, and the connection between the secondary safety measure operation objects is added using lines.

[0058] In another embodiment of generating a secondary safety measure control diagram, a secondary safety measure control diagram template is first generated based on all secondary devices and secondary safety measure operation objects in the safety measure target model. In the template, wireframes represent secondary devices, sub-wireframes within the secondary device wireframes represent other secondary safety measure operation objects, and lines between wireframes represent the connections between the secondary safety measure operation objects. When the secondary safety measure control diagram is generated, the elements corresponding to the secondary devices to be repaired, the secondary safety measure operation objects, the 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.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this 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 management and control measures for secondary equipment in smart substations, characterized in that: include: Construct security target model based on smart substation SCD file; Improve the secondary security measures operation object in the security measures target model; Adding security measures rules to the security measures target model; Generating secondary equipment safety measures using the safety measure target model according to the secondary equipment to be repaired; Automatically generate secondary safety measures control diagrams and secondary safety measures tickets based on the secondary equipment to be repaired, the secondary safety measures operation objects, and the secondary equipment safety measures. The secondary safety measures control diagrams are used to visually display the equipment and components affected by the execution of secondary safety measures. The method for adding security measures rules to the security measures target model includes: adding corresponding operation methods to the secondary security measures operation objects in the security measures target model; associating the security measures rules with the secondary security measures operation objects; the security measures rules include operation objects, operation methods and operation devices; The safety measure target model is used to provide a data basis for generating safety measures for secondary equipment. The method for generating safety measures for secondary equipment using the safety measure target model includes: determining the secondary equipment maintenance scope in the safety measure target model based on the secondary equipment to be repaired; clarifying the secondary safety measure operation object that serves as an isolation point between the normally operating equipment and the equipment to be repaired based on the logical relationship between the secondary equipment in the safety measure target model; determining the operation mode of the selected secondary safety measure operation object based on the safety measure rules in the safety measure target model, and generating the secondary equipment safety measures; The method for automatically generating a secondary safety measure control diagram includes: generating wireframes representing secondary equipment to be repaired, secondary equipment affected by a secondary safety measure operation object, and other secondary equipment connected to the above-mentioned secondary equipment; adding the secondary safety measure operation object to the wireframe of the corresponding secondary equipment; adding the connection relationship of the secondary safety measure operation object in the form of a connecting line; and highlighting the wireframe of the secondary equipment corresponding to the secondary safety measure operation object.

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 a safety measure target model based on the SCD file of a smart substation include: Parse the SCD file, build a primary loop model based on the topological relationship between the primary equipment and the primary system, and build a secondary loop model based on 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 2 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 operation objects, compare them with the secondary circuit model, and add the missing physical components in the model to the safety 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 using the data set; Use the recognition model to identify the corresponding components from the drawings; Identify the connection relationship between different components based on the direction of the connecting lines in the drawing.

5. 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 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 CAD drawings include: optical fibers, switches, devices, power supplies, panel cabinets, terminal boxes, buttons, terminals and pressure plates.