Intelligent substation secondary circuit modeling method and related device

Abstract

The invention belongs to the technical field of power system automation, and particularly relates to an intelligent substation secondary circuit modeling method and a related device. The intelligent substation secondary circuit modeling method comprises the steps that based on constructed elements, the relation between the elements is defined in a hierarchical mode, and a model for fusing a physical circuit and a logic circuit is constructed and obtained and serves as a secondary circuit model; when the relation between the elements is defined in a hierarchical mode, the substation module serves as the root of the secondary loop model, the subnet module is arranged below the substation module, the secondary equipment modules are arranged below the subnet module, the secondary equipment modules are connected through the port module, and data interaction is carried out through the data set module. According to the method, the bidirectional fusion model of the physical loop and the logic loop is established, information inconsistency of the bidirectional relation is avoided, and the actual requirements of an existing intelligent substation can be met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of power system automation, and particularly relates to a secondary circuit modeling method for an intelligent substation and a related device. BACKGROUND

[0002] Substation secondary circuit modeling is an important part of substation automation system construction, which can help to troubleshoot secondary circuit faults.

[0003] With the development of intelligent substation technology, secondary equipment has been fully networked; among them, the traditional secondary cable connecting the secondary equipment is replaced by communication cable, and the signals transmitted in the cable are also changed from one signal per secondary cable to one or more groups of signals per communication cable, so that the secondary circuit of the intelligent substation is composed of a physical circuit representing the connection of physical links and a logical circuit representing the logic of signal transmission, which puts forward new requirements for the state monitoring and operation and maintenance management of the secondary circuit.

[0004] In view of the above new situation, the existing substation secondary circuit modeling method cannot meet the actual needs of intelligent substations, and a new modeling method containing bidirectional relationship is urgently needed; illustratively, the existing method focuses on the physical connection relationship between secondary equipment, and does not reflect the signal transmission logic between secondary equipment.

[0005] Specifically, the Chinese invention patent application with application number CN201711317541.7 discloses an intelligent substation networked secondary circuit modeling method and fault diagnosis method, which mainly discloses an intelligent substation networked secondary circuit modeling scheme, which establishes secondary equipment object model, board card object model, component object model and container class object model, and defines the aggregation relationship and communication circuit connection relationship between the models; but this method focuses on the physical connection relationship between secondary equipment, only describes the link composition at the hardware level, and does not reflect the signal transmission logic between secondary equipment.

[0006] Further specifically, the Chinese invention patent application with application number CN202310060959.3 discloses a substation logical model secondary circuit digital modeling method, which divides the secondary circuit model into a physical circuit model including screen cabinet physical model and single device physical model, and a logical circuit model including primary topology model and single device capability description model, mainly describing the association relationship, functional relationship and hierarchical relationship between devices, and also cannot reflect the communication transmission relationship between secondary equipment. SUMMARY

[0007] The application aims to provide a smart substation secondary circuit modeling method and related device to solve one or more of the above technical problems.

[0008] To achieve the above-mentioned purposes, the application adopts the following technical solutions: In the first aspect of the application, a smart substation secondary circuit modeling method is provided, including the following steps: Based on the selected smart substation, elements are constructed, wherein the constructed elements include a substation module, a subnetwork module, a secondary device module, a port module and a dataset module; the substation module has a name attribute for indicating the smart substation to which the secondary circuit belongs; the subnetwork module is obtained according to the division of different types of logical network segments, and has a type attribute for indicating the network type of the subnetwork; the secondary device module has a name attribute for indicating the unique device type and a device location attribute; the port module is an interface for describing the communication between the secondary device and the external, and has a board card, a name, a type, a cable type, a cable number and a facing port attribute; the dataset module is a collection of data exchanged between devices, and has a direction, a terminal and a fiber core number attribute; the exchanged data contains a name and a device attribute for indicating the data source; Based on the constructed elements, the relationship between the elements is defined in a hierarchical manner to construct a model of the fusion of the physical circuit and the logical circuit and to serve as a secondary circuit model; wherein, when the relationship between the elements is defined in a hierarchical manner, the substation module is taken as the root of the secondary circuit model, the subnetwork module is arranged under the substation module, the secondary device module is arranged under the subnetwork module, the secondary device modules are connected through the port module, and the data are exchanged through the dataset module.

[0009] The further improvement of the technical scheme of the application is that The substation module is described by a Substation element; wherein, the name attribute is described by a name element.

[0010] The further improvement of the technical scheme of the application is that The subnetwork module is described by a SubNetwork element; wherein, the type attribute is described by a type element.

[0011] The further improvement of the technical scheme of the application is that The secondary device module is described by an IED element; wherein, the name attribute is described by a name element; In addition, the attribute for indicating the device position comprises a cubicle attribute and a cubby attribute; the cubicle attribute is described by a Region element, and the cubby attribute is described by a Cubicle element.

[0012] The further improvement of the technical scheme of the present application is that, In the port module, the board attribute is used for indicating the secondary device board where the port is located, the name attribute is used for indicating a specific port on the board, the type attribute is used for indicating the type of the port, the cable type attribute is used for indicating the cable type of the loop where the port is located, the cable number attribute is used for indicating the cable corresponding to the loop where the port is located, and the opposite port attribute is used for indicating the port at the other end of the data transmission.

[0013] The further improvement of the technical scheme of the present application is that, The port module is described by a Port element; the name attribute is described by a name element, the board attribute is described by a board element, the type attribute is described by a type element, the cable type attribute is described by a cable_type element, the cable number attribute is described by a cable_code element, and the opposite port attribute is described by an opposite_port element.

[0014] The further improvement of the technical scheme of the present application is that, In the data set module, the direction attribute is used for indicating the direction of data input or output, the terminal attribute is used for indicating the terminal of the port corresponding to the loop, and the fiber core serial number attribute is used for indicating the fiber core corresponding to the loop.

[0015] The further improvement of the technical scheme of the present application is that, The data set module is described by a DataSet element; the direction attribute is described by a direction element, the terminal attribute is described by a terminal element, and the fiber core serial number attribute is described by a no element. The direction attribute comprises two kinds of in and out, which are used for indicating the input and output of the signal respectively; the terminal attribute corresponds to the direction attribute and is divided into a sending terminal and a receiving terminal, which are described by pub and sub elements; the fiber core serial number attribute is sequentially numbered from 1.

[0016] The further improvement of the technical scheme of the present application is that, The interactive data is described by a Data element; the name attribute is described by a name element, and the device attribute is described by a refIED element.

[0017] In the second aspect of the present application, a secondary loop modeling system of a smart substation is provided, which comprises: An element construction module is configured to construct elements based on the selected smart substation, wherein the constructed elements include a substation module, a subnet module, a secondary device module, a port module, and a data set module; the substation module has a name attribute for indicating the smart substation to which the secondary circuit belongs; the subnet module is obtained according to different types of logical network segments, and has a type attribute for indicating the network type of the subnet; the secondary device module has a name attribute for indicating the unique device type and a device location attribute; the port module is an interface for describing the communication between the secondary device and the external, and has a board card, a name, a type, a cable type, a cable number, and a facing port attribute; the data set module is a collection of data exchanged between devices, and has a direction, a terminal, and a fiber core number attribute; the exchanged data has a name and a device attribute for indicating the data source; A model construction module is configured to define the relationship between the elements in a hierarchical manner based on the constructed elements, to obtain a model of the fusion of the physical circuit and the logical circuit as the secondary circuit model, and to define the relationship between the elements in a hierarchical manner, wherein the substation module is taken as the root of the secondary circuit model, the subnet module is arranged under the substation module, the secondary device module is arranged under the subnet module, the secondary device modules are connected through the port module, and the data set module is used for data exchange.

[0018] In a third aspect, the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for modeling the secondary circuit of the smart substation according to any one of the first aspect.

[0019] In a fourth aspect, the present application provides a non-transitory computer readable storage medium, which stores a computer program, wherein the computer program is executable on a processor to implement the method for modeling the secondary circuit of the smart substation according to any one of the first aspect.

[0020] Compared with the prior art, the present application has the following beneficial effects: The application provides a secondary circuit modeling method of a smart substation, which completely describes the connection relationship between cables, optical cables and signals of the smart substation, and solves the problem of separation of physics and logic by constructing a secondary circuit model of the fusion of a physical circuit and a logic circuit, which can reflect the physical composition of the secondary circuit and embody the logic signal transmission relationship, and does not appear the inconsistent situation of bidirectional relationship. Further illustratively, the secondary circuit model constructed by the new scheme of the application contains bidirectional relationship, when the physical circuit or the logic circuit appears abnormal, the corresponding part can be quickly located (in the specific technical scheme, when the physical circuit fails, the specific signal affected can be quickly located; when the signal appears abnormal, the physical transmission path where the abnormality is located can be quickly located), which is convenient for personnel and application program analysis and processing, improves the digital level of the secondary circuit of the smart substation, and meets the actual needs of the smart substation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description; obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 is a flowchart of a secondary circuit modeling method of a smart substation in an embodiment of the application; Figure 2 is a schematic diagram of the principle of a secondary circuit model of a smart substation constructed in an embodiment of the application; Figure 3 is a simple GOOSE network schematic diagram in an embodiment of the application; illustratively, the GOOSE (Generic Object Oriented Substation Event) network is a real-time communication network constructed based on the IEC 61850 standard in the smart substation; Figure 4 is a schematic diagram of a secondary circuit modeling system of a smart substation in an embodiment of the application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the application more clear, the technical scheme in the application will be clearly and completely described below in combination with the drawings in the embodiments of the application; obviously, the described embodiment technical scheme is a part of the embodiments of the application, and is not all the embodiments.

[0024] Based on the technical solutions disclosed in the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0025] Referring to Figure 1 The intelligent substation secondary circuit modeling method provided by the embodiments of the present application comprises the following steps: Step 1, establishing a substation module, a subnet module, a secondary device module, a port module and a dataset module; Step 2, based on the substation module, the subnet module, the secondary device module, the port module and the dataset module established in step 1, a model of the fusion of a physical circuit and a logical circuit is constructed in a hierarchical manner to obtain a secondary circuit model of an intelligent substation; In the process of constructing the model of the fusion of the physical circuit and the logical circuit in a hierarchical manner, the substation module is the root of the secondary circuit model, which contains a name attribute for indicating the intelligent substation to which the secondary circuit belongs; the subnet module is divided into different subnets according to different types of logical network segments, which contains a type attribute for indicating the network type of the subnet; the secondary device module contains a name attribute for indicating the type of the device and has uniqueness; meanwhile, the secondary device module also contains attributes such as a chamber and a screen cabinet for indicating the specific position of the device. The port module describes the interface of the secondary device for external communication and contains attributes such as a board card, a name, a type, a cable type, a cable number and a facing port; among them, the board card attribute indicates the secondary device board card where the port is located, the name attribute specifies a specific port on the board card, the type attribute represents the type of the port, the cable type attribute represents the cable type of the circuit where the port is located, the cable number attribute indicates the cable corresponding to the circuit where the port is located, and the facing port attribute represents the port of the device at the other end of data transmission. The dataset module is a collection of data exchanged between devices and contains attributes such as a direction, a terminal and a fiber core number; among them, the direction attribute indicates the direction of data input or output, the terminal attribute indicates the terminal of the port corresponding to the circuit, and the fiber core number attribute indicates the fiber core corresponding to the circuit. The data contains a name and a device attribute, and the device in the device attribute is the device generating the data, indicating the source of the data.

[0026] The core invention point in the technical scheme provided by the embodiment of the application is the establishment step of specific elements and the hierarchical modeling process based on the elements; by establishing specific attribute elements including a substation, a subnetwork, secondary equipment, a port and a data set, a model of the fusion of a physical circuit and a logical circuit is constructed in a hierarchical manner, the problem of incomplete digital description of the secondary circuit is solved, and help is provided for troubleshooting of the secondary circuit, and the operation and maintenance efficiency and reliability of the secondary circuit are improved.

[0027] Further illustratively, the technical scheme of the embodiment of the application models in a hierarchical manner, fuses a physical layer (such as a device, a port and other physical components) containing specific attribute elements and a logical layer (such as a logical signal transmission relationship such as a data transmission direction), and constructs a model of the fusion of a physical circuit and a logical circuit. By constructing the secondary circuit model of the fusion of a physical circuit and a logical circuit, both the physical components of the secondary circuit and the logical signal transmission relationship are reflected, and the problem of separation of the physical and the logical is solved. When an abnormality occurs in the physical circuit or the logical circuit, the corresponding part can be quickly located, personnel and application programs can be analyzed and processed, and the digital level of the secondary circuit of the intelligent substation is improved.

[0028] Referring to Figure 1 and Figure 2 In the specific embodiment of the application, a modeling method of a secondary circuit of a substation is provided, including the following steps: Step 1, a substation module, a subnetwork module, a secondary equipment module, a port module and a data set module are established.

[0029] The substation module is described by a Substation element, a name attribute is described by a name element, and is determined according to the name of the actual substation.

[0030] Illustratively, the specific form of the substation module is as follows: <substation name=""test”" desc=""测试站”"> < / substation> The subnetwork module is described by a SubNetwork element, and a type attribute is described by a type element. Illustratively, the type is usually divided into SV, GOOSE and MMS according to different communication protocols; in order to ensure the reliability of communication, the substation usually uses double-network communication, for example, the SV subnetwork can be divided into SV_A and SV_B.

[0031] Illustratively, the specific form of the subnetwork module is as follows: <subnetwork type=""SV_A”" desc=""SV_A网”"> < / subnetwork> The secondary equipment module is described by an IED element, a name attribute is described by a name element, a small room attribute is described by a Region element, and a screen cabinet attribute is described by a Cubicle element.

[0032] Exemplarily, the name of the secondary device follows the naming manner commonly used in the industry, for example, P_L2201A represents the first set of protection for the 220 kV line, and C_L1101X represents the 110 kV line measurement and control; the naming of the cubicle and the screen cabinet is also determined according to the actual naming.

[0033] The specific form of the secondary device module is as follows: <ied name=""P_L2201A”" desc=""220kV线路第一套保护”" region=""R220”Cubicle=" "xlp1a”> < / ied> The port module is described by the Port element, the name attribute is described by the name element, the board attribute is described by the board element, the type attribute is described by the type element, the cable type attribute is described by the cable_type element, the cable number attribute is described by the cable_code element, and the opposite port attribute is described by the opposite_port element.

[0034] Exemplarily, the name of the port is represented by “X-X”, for example, the port in the 3rd row and the 2nd column on the board card is “3-2”. The board cards are numbered in sequence from left to right in the secondary device, and the sequence is B1, B2, B3, …, and the panel is defaulted as BO. The type of the port includes LC (small square port), ST (circular socket), SC (large square port), FC (circular thread), and RJ45 (network port). The cable type includes DL (ordinary cable), GL (optical cable), WL (tail cable), WX (tail fiber), TL (jump cable), TQ (jump fiber), SJX (twisted pair), and QT (other). The cable number is determined according to the actual cable number. The structure of the opposite port attribute is “secondary device / board card / port name”, for example, “P_L2201A / B1 / 3-2”.

[0035] The specific form of the port model is as follows: <port name=""4-1”" board=""B2”" type=""LC”" cable_type=""WL”" cable_code=""1”" opposite_port=""P_L2201A / B1 / 3-2”"> < / port> The data set module is represented by the DataSet element, the direction attribute is represented by the direction element, the terminal attribute is represented by the terminal element, and the fiber core number attribute is represented by the no element. The direction includes in and out, indicating the input and output of the signal. The terminal attribute corresponds to the direction attribute, and is divided into the sending terminal and the receiving terminal, represented by the pub and sub elements. The fiber core number is sequentially numbered from “1”. The data in the data set is represented by the Data element, the name attribute is represented by the name element, and the device attribute is represented by the refIED element.

[0036] Exemplarily, the specific form of the data set module is as follows: <dataset direction=""in”" terminal=""1”" no=""1”"> <data name=""CBXCBR1.Pos.stVal”" desc=""断路器位置”" refied=""C_L2201A” / "> <data name=""QGXSWI1.Pos.stVal”" desc=""刀闸1位置”" refied=""C_L2201A” / "> <data name=""QGXSWI2.Pos.stVal”" desc=""刀闸2位置”" refied=""C_L2201A” / "> < / data> < / data> < / data> < / dataset> In the specific exemplary embodiment of the present application, based on the constructed substation module, subnetwork module, secondary device module, port module and input / output dataset module, the substation secondary circuit model is established in a hierarchical structure.

[0037] Referring to Figure 3 In the specific exemplary embodiment of the present application, taking a simple GOOSE network as an example (some attributes are omitted for explanation), the hierarchical structure of the whole secondary circuit model is further clearly described, and the specific form is as follows: <substation name=""test”" desc=""测试站”"> <subnetwork type=""GOOSE_A”" desc=""GOOSE_A网”"> <ied name=""P_L1101X”" desc=""110kV线路保护”"> <port name=""1-1”" opposite_port=""SW111105 / B1 / 2-2”"> <dataset direction=""in”"> <data name=""CBXCBR1.Pos.stVal”" desc=""断路器位置”" refied=""C_L1101X” / "> < / data> < / dataset> <dataset direction=""out”"> <data name=""PTRC6.Tr.general”" desc=""保护跳闸”" refied=""P_L2201A” / "> < / data> < / dataset> < / port> < / ied> <ied name=""C_L1101X”" desc=""110kV线路测控”"> <port name=""2-1”" opposite_port=""SW111105 / B1 / 2-3”"> < / port> < / ied> <ied name=""I_L1101X”" desc=""110kV智能终端”"> <port name=""1-1”" opposite_port=""SW111105 / B1 / 2-1" ”> < / port> < / ied> <ied name=""SW_1111105”" desc=""A网交换机”"> <port name=""2-1”" opposite_port=""I_L1101X / B1 / 1-1”"> < / port> < / ied> <ied name=""SW_1111105”" desc=""A网交换机”"> <port name=""2-2”" opposite_port=""P_L1101X / B1 / 1-1”"> < / port> < / ied> <ied name=""SW_1111105”" desc=""A网交换机”"> <port name=""2-3”" opposite_port=""C_L1101X / B1 / 2-1”"> < / port> < / ied> < / subnetwork> <subnetwork type=""GOOSE_B”" desc=""GOOSE_B网”"> < / subnetwork> < / substation> The following is a device embodiment of the present application, which can be used to execute the method embodiment of the present application. For details not disclosed in the device embodiment, please refer to the method embodiment of the present application.

[0038] Referring to Figure 4 In the embodiment of the present application, a secondary circuit modeling system of a smart substation is provided, which comprises: An element construction module is configured to construct elements based on a selected smart substation, wherein the constructed elements include a substation module, a subnetwork module, a secondary device module, a port module and a dataset module; the substation module has a name attribute for indicating the smart substation to which the secondary circuit belongs; the subnetwork module is obtained according to the division of different types of logical network segments, and has a type attribute for indicating the network type of the subnetwork; the secondary device module has a name attribute for indicating the unique device type and a device location attribute; the port module is an interface for describing the communication between the secondary device and the external, and has a board card, a name, a type, a cable type, a cable number and a facing port attribute; the dataset module is a collection of data exchanged between devices, and has a direction, a terminal and a fiber core number attribute; the exchanged data contains a name and a device attribute for indicating the data source; A model construction module is configured to define the relationship between the elements in a hierarchical manner based on the constructed elements, to construct a model of the fusion of the physical circuit and the logical circuit as a secondary circuit model; wherein when the relationship between the elements is defined in a hierarchical manner, the substation module is taken as the root of the secondary circuit model, the subnetwork module is arranged under the substation module, the secondary device module is arranged under the subnetwork module, the secondary device modules are connected through the port module, and the data exchange is performed through the dataset module.

[0039] In an embodiment of the present application, a computer device is provided, which comprises a processor and a memory for storing a computer program comprising program instructions, the processor being configured to execute the program instructions stored in the computer storage medium. The processor can be a Central Processing Unit (CPU), and can also be other general-purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field-Programmable Gate Arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc., which are the computing core and control core of the terminal, and are suitable for implementing one or more instructions, and are specifically suitable for loading and executing one or more instructions in the computer storage medium to implement a corresponding method flow or a corresponding function; the processor in the embodiments of the present application can be used to execute the operations of the secondary circuit modeling method of the smart substation.

[0040] In an embodiment of the present application, a storage medium is provided, specifically a computer readable storage medium (Memory), which is a memory device in a computer device, and is used to store programs and data. It can be understood that the computer readable storage medium herein can include an internal storage medium in the computer device, and of course can also include an extended storage medium supported by the computer device. The computer readable storage medium provides a storage space, which stores the operating system of the terminal. Moreover, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer readable storage medium herein can be a high-speed RAM (Random Access Memory) memory, or a non-volatile memory such as at least one disk memory. One or more instructions stored in the computer readable storage medium can be loaded and executed by the processor to implement the corresponding steps of the secondary circuit modeling method of the smart substation in the above embodiments.

[0041] Those skilled in the art will appreciate that embodiments of the application can be readily used as software, hardware, or a combination of software and hardware. In one

[0042] The present application is described in reference to the flowchart and / or block diagrams of the methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks.

[0043] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks.

[0044] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks.

[0045] Finally, it should be noted that the above-mentioned embodiments are merely intended for describing the technical solutions of the present application, but not for limiting it. Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement without departing from the spirit and scope of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. A method for modeling secondary circuits in an intelligent substation, characterized in that, Includes the following steps: Based on the selected smart substation, elements are constructed. These elements include a substation module, a subnet module, a secondary equipment module, a port module, and a dataset module. The substation module has a name attribute indicating the smart substation to which the secondary circuit belongs. The subnet module is obtained by dividing different types of logical network segments and has a type attribute indicating the subnet network type. The secondary equipment module has a unique name attribute indicating the device type and an attribute indicating the device location. The port module describes the interface between the secondary equipment and external communication, and has board, name, type, cable type, cable number, and opposite port attributes. The dataset module is a collection of data exchanged between devices, and has direction, terminal, and fiber core number attributes. The exchanged data contains a name and a device attribute indicating the data source. Based on the constructed elements, a hierarchical approach is adopted to define the relationships between the elements, thereby constructing a model that integrates physical and logical loops and serving as a secondary loop model. When defining the relationships between elements in a hierarchical manner, the substation module is taken as the root of the secondary loop model. The substation module has subnet modules, and the subnet modules have secondary equipment modules. The secondary equipment modules are connected through port modules and interact with each other through the dataset module.

2. The method for modeling secondary circuits in an intelligent substation according to claim 1, characterized in that, The substation module is described using the Substation element; the name attribute is described using the name element.

3. The method for modeling secondary circuits in an intelligent substation according to claim 1, characterized in that, The subnet module is described by the SubNetwork element; the type attribute is described by the type element.

4. The intelligent substation secondary circuit modeling method according to claim 1, characterized in that, The secondary device module is described using the IED element; the name attribute is described using the name element. In addition, the attributes used to indicate the location of the device include room attributes and cabinet attributes; the room attribute is described by the Region element, and the cabinet attribute is represented by the Cubicle element.

5. The method for modeling secondary circuits in an intelligent substation according to claim 1, characterized in that, In the port module, the board attribute is used to indicate the secondary device board where the port is located, the name attribute is used to indicate a specific port on the board, the type attribute is used to indicate the type of the port, the cable type attribute is used to indicate the cable type of the circuit where the port is located, the cable number attribute is used to indicate the cable corresponding to the circuit where the port is located, and the opposite port attribute is used to indicate the port at the other end of the data transmission.

6. The method for modeling secondary circuits in an intelligent substation according to claim 5, characterized in that, The port module is described by the Port element; wherein, the name attribute is described by the name element, the board attribute is described by the board element, the type attribute is described by the type element, the cable type attribute is described by the cable_type element, the cable number attribute is described by the cable_code element, and the opposite port attribute is described by the opposite_port element.

7. The method for modeling secondary circuits in an intelligent substation according to claim 1, characterized in that, In the dataset module, the direction attribute is used to indicate the direction of data input or output, the terminal attribute is used to indicate the terminal of the port corresponding to the loop, and the fiber core number attribute is used to indicate the fiber core corresponding to the loop.

8. The method for modeling secondary circuits in an intelligent substation according to claim 7, characterized in that, The dataset module is represented by a DataSet element; wherein, the direction attribute is represented by a direction element, the terminal attribute is represented by a terminal element, and the fiber core number attribute is represented by a no element; The direction attribute includes two types, in and out, which are used to represent signal input and output, respectively; the terminal attribute corresponds to the direction attribute and is divided into transmitting terminal and receiving terminal, represented by the pub and sub elements; the fiber core number attribute starts from "1" and is numbered sequentially.

9. The method for modeling secondary circuits in an intelligent substation according to claim 1, characterized in that, Interactive data is represented by the Data element; the name attribute is represented by the name element, and the device attribute is represented by the refIED element.

10. A smart substation secondary circuit modeling system, characterized in that, include: The element construction module is used to construct elements based on a selected smart substation. These elements include a substation module, a subnet module, a secondary equipment module, a port module, and a dataset module. The substation module has a name attribute indicating the smart substation to which the secondary circuit belongs. The subnet module is obtained by dividing different types of logical network segments and has a type attribute indicating the subnet network type. The secondary equipment module has a unique name attribute indicating the device type and an attribute indicating the device location. The port module describes the interface between secondary equipment and external communication, and has board, name, type, cable type, cable number, and opposite port attributes. The dataset module is a collection of data exchanged between devices, and has direction, terminal, and fiber core number attributes. The exchanged data contains a name and a device attribute indicating the data source. The model building module is used to define the relationships between elements in a hierarchical manner based on the built elements, and to build a model that integrates physical and logical loops as a secondary loop model. When defining the relationships between elements in a hierarchical manner, the substation module is used as the root of the secondary loop model. The substation module has subnet modules, and the subnet modules have secondary equipment modules. The secondary equipment modules are connected through port modules and interact with each other through the dataset module.

11. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the intelligent substation secondary circuit modeling method as described in any one of claims 1 to 9.

12. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the intelligent substation secondary circuit modeling method as described in any one of claims 1 to 9.

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