Method for building virtual-real loop visualization system

Abstract

The invention discloses a visual display method and system for virtual and real loops of an intelligent substation. A visual model structure is generated by analyzing a whole-station SCD model, and is converted into an SVG image to display a virtual-real loop diagram. The method comprises the steps of analyzing an SCD model to obtain equipment model information, selecting virtual and real loop center equipment, analyzing and finding peripheral input equipment, traversing the equipment to generate a virtual and real loop graph data model, and generating a virtual and real loop SVG image based on the data model. The central equipment and the associated equipment are defined as IED models, the physical connection relation between the central equipment and the peripheral equipment is obtained, and real connection is analyzed and formed. The method comprises the specific implementation steps that center equipment is defined as an IED model which comprises an IED name, pressing plate information, description information, a control block and data set information, peripheral equipment associated with the center equipment is found according to IED input link information of an SCD, real connection information is supplemented and associated to the IED control block, and the generated data model is converted into an SVG image to display a virtual-real loop diagram. And finally, by constructing a virtual-real loop diagram data model and generating an SVG image, the system realizes visual display of a virtual-real loop.

Description

Technical Field

[0001] The present invention belongs to the field of substation design, and specifically relates to a method and system for visualizing a virtual and real circuit. Background Art

[0002] The secondary system of the smart substation is based on the substation SCD model, and the traditional terminals are replaced by "virtual terminals". In the operation and maintenance of the secondary system, the visible secondary cables become incompatible secondary virtual circuits. When the virtual circuit fails, it is difficult to find the corresponding cable, and the operation and maintenance efficiency is low. At present, there have been certain achievements in the visualization of virtual circuits and optical fiber circuits, but there are few studies and results on the combined display of virtual and real circuits, and it is impossible to dynamically modify the virtual and real circuit image display according to the changes of the SCD model. Summary of the invention

[0003] To solve the above problems, the present invention proposes a virtual-real circuit visualization method and system for a smart substation, which generates a visualization model structure by analyzing the SCD model of the entire station, and then converts it into an SVG image to display the virtual-real circuit diagram in the system.

[0004] In some embodiments, the following technical solutions are adopted: A method for displaying a virtual-real circuit diagram of a smart substation, comprising: Parse the SCD model, obtain all intelligent device model information, and store the control block and data set information of each device; Select the central device of the virtual-real loop, parse all incoming links according to the Inputs node, and find the surrounding input devices; Traverse the parsed devices and search for the central device from the input devices. If found, the device is the peripheral output device. Generate a virtual-real loop diagram data model based on the model information of the central equipment and peripheral equipment; Based on the data model, a virtual-real loop SVG image is generated to display the virtual-real loop diagram of the smart substation.

[0005] As a further solution, the central device and associated devices are defined as an IED model, which at least includes the following information: IED name, pressure plate information, description information, belonging control block and data set information.

[0006] As a further solution, the physical connection relationship between the central device and the peripheral devices is obtained. The specific process includes: Parse the Inputs node and search for the IED with the same name under the ConnectedAP node according to the associated IED name. The subordinate PhysConn node type is Cable, and the Cable node attribute is the IED name to which the Inputs node belongs. According to the parsed Cable information, there are two situations: 1. If the Cable node information contains the name of the local IED, it is a direct connection. The local IED, local port, opposite IED, and opposite port are separated according to the information. 2. If the Cable node contains the string "SW", it is connected through a switch, and the local IED, local port, opposite switch, and opposite port are separated according to the information. The switch is used as the local IED for recursive search to find the opposite IED and port number.

[0007] A real connection is formed based on the parsed IED information on the opposite side.

[0008] Based on the parsed data model, an SVG diagram is generated by drawing, including: Draw the central device, determine the height of the central device rectangle according to the number of all associated loops, and draw it in the center; Draw the peripheral equipment, determine the height of the equipment rectangle according to the number of associated circuits of the equipment, and draw them in order from high to low and from left to right; For the virtual circuit of the peripheral equipment, determine whether it belongs to the pressure plate. If so, draw the pressure plate shape on the output side and wrap it with a dotted rectangle to indicate that this part of the virtual circuit belongs to the pressure plate; otherwise, directly draw the virtual circuit; For the real circuit of the peripheral device, determine whether it passes through the switch. If so, draw the switch icon in the middle of the real circuit, and modify the attributes of the circuit in SVG to add the port numbers on both sides of the switch and the switch name; otherwise, draw the real circuit directly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structure diagram of the virtual-real loop diagram data model in an embodiment of the present invention.

[0010] Figure 2 This is a structural diagram of the SVG data model in an embodiment of the present invention.

[0011] Figure 3 This is a flow chart of SCD model analysis in an embodiment of the present invention.

[0012] Figure 4 This is a flow chart for generating an SVG image in an embodiment of the present invention. DETAILED DESCRIPTION

[0013] In one or more embodiments, a method for building a virtual-real loop visualization system is disclosed, which mainly includes two parts: building a virtual-real loop diagram data model and generating an svg diagram; Among them, reference Figure 1The data model of the virtual-real loop diagram is constructed with a designated device as the central device, which is defined as an IED model, including its IED name, pressure plate information, description information, control block and data set information. According to the IED input link information of the SCD, all peripheral devices associated with the central device are found, and the real connection information of the switch involved is completed and associated with the control block to which the IED belongs. Then refer to Figure 2 Convert the generated data model into an svg data model, and then Figure 4 The process is used to draw data into SVG graphics.

[0014] In this embodiment, when data is sent from a peripheral device to a central device, the central device is an input device and the peripheral device is an output device; conversely, when data is sent from a central device to a peripheral device, the central device is an output device and the peripheral device is an input device.

[0015] The specific process is as follows: Step 1: Analyze the SCD model and store all IED information. For the analysis process, refer to Figure 3 ; Step 2: Get the designated central device information, and get the peripheral associated devices of the central device according to the parsed IED information; Step 3: For each associated IED, attribute the link associated with the central device to the corresponding control block according to the data address; Step 4: Traverse the links of the specified peripheral IEDs, and obtain the specific connection relationship between the output device and the sending device according to the input device, input port number, and output device. The specific steps are as follows: 1. Search for the ConnectedAP node based on the output device name. Determine the Cable node information based on the search results. If the input device name is included, such as IMT2201M:5-B_PT2202B:5-D, the connection is a direct connection. The device port information on both sides is split and completed based on the Cable node information, such as IMT2201M:5-B_PT2202B:5-D; 2. If it contains the SW string, such as SW2201A:13_ILT5001:8-A, SW2201A:3_PL2205NA:7-A, the connection is through a switch. Recursively search and complete the link information based on the switch name and input device name. In this example, if the central device is ILT5001, the opposite device is PL2205NA, and the corresponding display link is ILT5001:8-A_PL2205NA:7-A. The input and output relationship can be directly determined by the Inputs node.

[0016] For all peripheral devices, the above process can be performed to generate a complete virtual-real loop data model.

[0017] According to the generated virtual-real loop data model, draw the SVG image. The specific process is as follows: Step 1: Draw the central device. Use a background rectangle on the top to display the IED name and description information. Wrap it with a dotted rectangle. Draw associated links on both sides of the dotted rectangle. Determine whether to draw the pressure plate graphic based on the link attributes. Step 2: Draw the peripheral devices in the same shape as the central device rectangle, and arrange them in order from top to bottom and from left to right; Step 3: Draw all links, distinguishing virtual loops from real loops by color; for virtual loops belonging to the same pressure plate, draw them uniformly on one side of the pressure plate rectangle; for real loops passing through switches, draw switches and diagrams in the center of the loop; Step 4: Parse the generated SVG image, add attributes to the device rectangle node to record the IED name, and add attributes to the link segment node to record the IED names and port numbers on both sides.

Claims

1. A method for visualizing virtual and real circuits of a smart substation, comprising: (1) Parse the SCD model, obtain the device model information, and store the control block and data set information; (2) Select the central device of the virtual-real loop, parse the Inputs node, and find the peripheral input devices; (3) Traverse the devices and find the central device. If found, it is the peripheral output device; (4) Generate the virtual-real loop diagram data model based on the model information of the central device and the peripheral devices; (5) Generate the virtual-real loop SVG image based on the data model to realize the display of the virtual-real loop diagram of the smart substation.

2. According to claim 1, the central device and associated devices are defined as an IED model, including the IED name, pressure plate information, description information, belonging control block and data set information.

3. According to claim 1, obtaining the physical connection relationship between the central device and the peripheral devices comprises: (1) Parse the Inputs node and search for the IED with the same name under the ConnectedAP node and the PhysConn node type as Cable according to the associated IED name. The Cable node attribute is the IED name to which the Inputs node belongs. (2) According to the parsed Cable information, there are two cases: if the Cable node information contains the name of the local IED, it is a direct connection; if the Cable node contains "SW", it is connected through a switch. According to the information, the local IED, the local port, the opposite switch, and the opposite port are separated. The switch is used as the local IED for recursive search to find the opposite IED and port number.

4. According to claim 3, based on the parsed data model, generating an SVG graph by drawing, specifically comprising: (1) Draw the central device, determine the height, and draw it in the center; (2) Draw the peripheral devices in order from high to low and from left to right; (3) For the virtual circuit, determine whether it belongs to the pressure plate. If so, draw the pressure plate shape and wrap it with a dotted rectangle; otherwise, directly draw the virtual circuit; (4) For the real circuit, determine whether it passes through the switch. If so, draw the switch icon and modify the properties; otherwise, directly draw the real circuit.

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