A visual display method for secondary circuits of relay protection based on circuit stratification

Abstract

The present invention discloses a method for visual display of a relay protection secondary circuit based on circuit layering, which comprises the following steps: modeling a substation relay protection secondary circuit to obtain a substation relay protection secondary circuit cable connection description file, assigning corresponding circuit type definition, actual function definition and circuit pairing terminal port definition to each element therein; extracting the substation relay protection secondary circuit cable connection relationship from the relay protection secondary circuit cable connection description file, establishing a visual display template based on the circuit type definition, actual function definition and circuit pairing relationship definition of each element in the relay protection secondary circuit cable connection description file, and generating a circuit layered visual display graphic according to the visual display template.

Description

Technical Field

[0001] The present application relates to the technical field of substations, and in particular to a method for visualizing a relay protection secondary circuit based on circuit stratification. Background Art

[0002] The secondary circuit of the substation relay protection is an important part of ensuring the safe production and reliable power supply of the power system. It has the characteristics of complex circuits and multiple circuit types. Generally, in actual work, various secondary circuits of the substation relay protection are displayed on a drawing or a set of drawings. During the construction, operation and maintenance, the connection relationship of the secondary circuit of the relay protection is found by looking through the drawings. At present, the secondary circuit of the substation relay protection relies on drawings to carry the following problems:

[0003] 1. The secondary circuit CAD blueprint of the conventional substation design institute, the secondary circuit diagram visualization tool based on SCD files of the smart substation, and the substation monitoring system have not systematically considered the hierarchical display of different circuits, which is not conducive to efficient offline and on-site abnormal analysis and problem finding of the secondary circuit.

[0004] 2. The secondary circuit diagram of the intelligent station based on the SCD file only displays the virtual circuit. The cable circuit extended from the virtual circuit cannot be displayed in association with the virtual circuit. On-site operators need to read the virtual circuit diagram, CAD blueprint and device manual at the same time to match the virtual circuit diagram with the corresponding extended cable circuit diagram. This is inefficient and very error-prone, which seriously affects the work efficiency of operators. Summary of the invention

[0005] The purpose of the present invention is to provide a method for visual display of relay protection secondary circuits based on circuit stratification in response to the above-mentioned defects in the prior art, aiming to solve the problem that the current complex and intertwined relay protection secondary circuits are not conducive to abnormal analysis and problem finding by on-site personnel.

[0006] The above-mentioned purpose of the present invention is achieved by the following technical means:

[0007] A method for visualizing a relay protection secondary circuit based on circuit stratification includes the following steps:

[0008] Step 1: Model the substation relay protection secondary circuit, obtain the substation relay protection secondary circuit cable connection description file, and assign corresponding circuit type definition, actual function definition and circuit pairing terminal port definition to the relay protection secondary device port element, backplane terminal element, panel cabinet accessory port element and accessory terminal element in the substation relay protection secondary circuit cable connection description file;

[0009] Step 2. Extract the substation relay protection secondary circuit cable connection relationship from the relay protection secondary circuit cable connection description file, establish a visualization template based on the circuit type definition, actual function definition and circuit pairing relationship definition of the relay protection secondary device port element, backplane terminal element, panel cabinet accessory port element and accessory terminal element in the relay protection secondary circuit cable connection description file, and generate a circuit hierarchical visualization display graphic according to the visualization template.

[0010] As described above, in step 1, the substation relay protection secondary circuit is modeled, and obtaining the substation relay protection secondary circuit cable connection description file includes the following steps:

[0011] Describes the inherent properties of the relay protection secondary device port elements of the substation, the inherent properties of the backplane terminal elements, the inherent properties of the panel cabinet accessory port elements, the inherent properties of the accessory terminal elements, and the inherent properties of the panel cabinet terminal block elements; describes the cable connection relationship between the relay protection secondary device port elements, the backplane terminal elements, the panel cabinet accessory port elements, the accessory terminal elements, and the panel cabinet terminal block elements; describes the panel cabinet number attribute, the panel cabinet name attribute of the panel cabinet element, the device number attribute, the device name attribute, and the internal cable connection relationship of the device of the relay protection secondary device element; describes the number attribute and the accessory name attribute of the panel cabinet accessory element; describes the cable connection relationship between the cable elements within the panel cabinet and the cable elements between the panel cabinets, thereby forming a substation relay protection secondary circuit cable connection description file.

[0012] As described above, the loop type definitions in step 1 include: DC power loop, AC power loop, AC current loop, AC voltage loop, DC current loop, DC voltage loop, input loop, output loop, operation loop, communication timing loop, and printing loop.

[0013] As described above, the actual function definition in step 1 includes: the actual function definition of the DC power supply circuit, the actual function definition of the AC power supply circuit, the actual function definition of the AC current circuit, the actual function definition of the AC voltage circuit, the actual function definition of the DC current circuit, the actual function definition of the DC voltage circuit, the actual function definition of the input circuit, the actual function definition of the output circuit, the actual function definition of the operation circuit, the actual function definition of the communication timing circuit, and the actual function definition of the printing circuit.

[0014] As described above, the circuit pairing terminal ports in step 1 are the relay protection secondary device ports, backplane terminals, panel cabinet accessory ports, and terminal ports associated with the relay protection secondary circuit in the accessory terminals.

[0015] As described above, the visualization display templates in step 2 include a substation-level visualization display template, a panel-level visualization display template, a device-level visualization display template, and a loop-level visualization display template; the loop hierarchical visualization display graphics include a substation-level visualization display graphics, a panel-level visualization display graphics, a device-level visualization display graphics, and a loop-level visualization display graphics.

[0016] Creating a substation-level visualization template includes the following steps:

[0017] Establishing a substation-level visualization display template includes the following steps: formulate a panel cabinet placement area according to the predetermined panel cabinet number, draw a predetermined panel cabinet number and a panel cabinet name display area inside the panel cabinet, draw a relay protection secondary device display area contained in the panel cabinet inside the panel cabinet, draw a relay protection secondary device name display area inside the relay protection secondary device display area, and draw a cable connection area under each row of panel cabinets for placing inter-cabinet cable connection lines;

[0018] Establishing a cabinet-level visualization display template includes the following steps: drawing a placement area for a focused cabinet, drawing a cabinet number and cabinet name display area for the focused cabinet inside the focused cabinet, drawing a drawing space for air switches, pressure plates, five-protection locks, indicator lights, handles, buttons, terminal blocks, accessory relays, and printers contained in the cabinet inside the cabinet, drawing a display area for cable connections between air switches, pressure plates, five-protection locks, indicator lights, handles, buttons, terminal blocks, accessory relays, printers, and devices inside the cabinet, the cable connection lines inside the cabinet describe the cables drawn from each cable element in the cabinet, drawing a display area for non-focused cabinets connected to the focused cabinet outside the focused cabinet, and drawing a display area for cable connections between the focused cabinet and the non-focused cabinet outside the focused cabinet;

[0019] Establishing a device-level visualization display template includes the following steps: drawing a placement area for a focusing device, drawing a display area for the device number and device name of the focusing device inside the focusing device, drawing display areas for each type of circuit according to the circuit type inside the focusing device, drawing a display area for the circuit connection relationship inside the focusing device inside each circuit type display area, displaying the electrical circuit on the board in the relay protection secondary device, drawing a display area for a non-focusing device connected to the focusing device outside the focusing device, drawing a display area for the cable connection between the focusing device and the non-focusing device outside the focusing device, the cable connection between the focusing device and the non-focusing device includes the cable connection relationship inside the panel cabinet and the cable connection relationship outside the panel cabinet, and drawing the cable connection relationship of the air switch, pressure plate, five-protection lock, indicator light, handle, button, terminal, accessory relay, and printer in the panel cabinet;

[0020] Establishing a circuit-level visualization display template includes the following steps: drawing a display area for all relay protection secondary devices contained in a focused secondary circuit or a certain type of secondary circuit, drawing a display area for the device number and device name of the relay protection secondary device in each relay protection secondary device display area, drawing a secondary circuit display area within the device through which the focused secondary circuit passes within each relay protection secondary device display area, the secondary circuit display area within the device references the internal cable connection relationship of the relay protection secondary device element associated with the focused secondary circuit, drawing a device connection relationship display area for the focused circuit between the relay protection secondary devices, and the device connection relationship display area includes the cable connection relationship inside the panel cabinet, the cable connection relationship outside the panel cabinet, and the cable connection relationship of the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal, accessory relay, and printer in the panel cabinet.

[0021] Generating a substation-level visualization display graphic according to a substation-level visualization display template includes the following steps: the number of the panel cabinet in the substation-level visualization display template refers to the panel cabinet number attribute, the name of the panel cabinet in the substation-level visualization display template refers to the panel cabinet name attribute, the sequence of the relay protection secondary devices contained in the panel cabinet in the substation-level visualization display template refers to the sequence of appearance of the relay protection secondary device elements under the panel cabinet element, and the relay protection secondary device name in the substation-level visualization display template refers to the device name attribute of the corresponding relay protection secondary device element in the panel cabinet element;

[0022] Generating a cabinet-level visualization display graphic according to a cabinet-level visualization display template includes the following steps: the cabinet number in the cabinet-level visualization display template refers to the cabinet number attribute, the cabinet name in the cabinet-level visualization display template refers to the cabinet name attribute, the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer in the cabinet-level visualization display template each have their own number reference to the number attribute of the corresponding cabinet accessory element, the device number in the cabinet in the cabinet-level visualization display template refers to the number attribute of the corresponding relay protection secondary device element, the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer in the cabinet-level visualization display template each have their own name reference to the name attribute of the corresponding cabinet accessory element, and the device name in the cabinet in the cabinet-level visualization display template refers to the name attribute of the corresponding relay protection secondary device element;

[0023] Generating a device-level visualization display graphic according to a device-level visualization display template includes the following steps: the device number in the device-level visualization display template refers to the number attribute of the corresponding relay protection secondary device element, the device name in the device-level visualization display template refers to the name attribute of the corresponding relay protection secondary device element, the circuit type in the device-level visualization display template is obtained from the circuit type definition of the backplane terminal of the relay protection secondary device, and the circuit connection relationship inside the relay protection secondary device in the device-level visualization display template is obtained from the device internal cable connection relationship under the device element;

[0024] Generating a loop-level visualization display graphic according to a loop-level visualization display template includes the following steps: selecting a certain substation relay protection secondary circuit or all relay protection secondary devices included in a certain type of substation relay protection secondary circuit, the device number of each relay protection secondary device in the loop-level visualization display template references the device number attribute, and the name of each relay protection secondary device references the device name attribute.

[0025] The present invention can solve the inefficiency problem of the current substation relying on CAD drawings or paper drawings to flip through drawings to find circuits on site. Relying on the current substation CAD drawings or paper drawings, to find a complete specific functional circuit, it is necessary to search among multiple drawings in combination with manual experience; to find all functional circuits of a device, it is necessary to search among multiple drawings in combination with manual experience. The present invention can display the secondary circuit of the substation by the method of circuit hierarchical classification, thereby improving the efficiency of abnormal analysis and problem finding of the secondary circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the process of the present invention;

[0027] Figure 2 A schematic diagram of a substation-level visualization display provided by an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a cabinet-level visual display graphic provided in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of a device-level visual display graphic provided by an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of a circuit-level visualization display provided by an embodiment of the present invention; DETAILED DESCRIPTION

[0031] In order to facilitate those skilled in the art to understand and implement the present invention, the present invention is further described in detail below in conjunction with implementation examples. It should be understood that the implementation examples described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0032] See also Figure 1 The embodiment of the present invention provides a method for visualizing a relay protection secondary circuit based on circuit stratification, comprising the following steps:

[0033] S101: Model the substation relay protection secondary circuit, obtain the substation relay protection secondary circuit cable connection description file, and assign corresponding circuit type definition, actual function definition and circuit pairing terminal port definition to the relay protection secondary device port elements, backplane terminal elements, panel cabinet accessory port elements and accessory terminal elements in the substation relay protection secondary circuit cable connection description file.

[0034] Modeling the secondary circuit of the substation relay protection includes: describing the inherent attributes of the relay protection secondary device port element of the substation, the inherent attributes of the backplane terminal element, the inherent attributes of the panel cabinet accessory port element, the inherent attributes of the accessory terminal element, and the inherent attributes of the panel cabinet terminal strip element. The relay protection secondary device port element is associated with the backplane terminal element, and the panel cabinet accessory port element is associated with the accessory terminal element. It also includes describing the cable connection relationship between the relay protection secondary device port element, the backplane terminal element, the panel cabinet accessory port element, the accessory terminal element, and the panel cabinet terminal strip element. It also includes describing the panel cabinet number attribute, the panel cabinet name attribute, the device number attribute, the device name attribute, and the internal cable connection relationship of the device of the relay protection secondary device element, and also includes describing the number attribute and the accessory name attribute of the panel cabinet accessory element. It also includes describing the cable connection relationship between the cable element in the panel cabinet and the cable element between the panel cabinets, thereby forming a substation relay protection secondary circuit cable connection description file.

[0035] The circuit type definition refers to assigning circuit type definitions to the relay protection secondary device port elements, backplane terminal elements, panel cabinet accessory port elements, and accessory terminal elements in the substation relay protection secondary circuit cable connection description file according to the actual function of the circuit. The circuit type definitions include: DC power supply circuit, AC power supply circuit, AC current circuit, AC voltage circuit, DC current circuit, DC voltage circuit, input circuit, output circuit, operation circuit, communication timing circuit, and printing circuit.

[0036] The actual function definition specifically refers to assigning actual function definitions to the relay protection secondary device port elements, backplane terminal elements, panel cabinet accessory port elements, and accessory terminal elements in the relay protection secondary circuit cable connection description file based on the device backplane diagram and device terminal description in the corresponding relay protection secondary device manual and the accessory backplane diagram and accessory terminal description in the panel cabinet accessory manual.

[0037] The actual function definition includes: the actual function definition of the DC power supply circuit, the actual function definition of the AC power supply circuit, the actual function definition of the AC current circuit, the actual function definition of the AC voltage circuit, the actual function definition of the DC current circuit, the actual function definition of the DC voltage circuit, the actual function definition of the input circuit, the actual function definition of the output circuit, the actual function definition of the operation circuit, the actual function definition of the communication timing circuit, and the actual function definition of the printing circuit.

[0038] The actual functional definition of the DC power supply circuit includes: device power supply (﹢\﹣), remote signal power supply (﹢\﹣), operation power supply (﹢\﹣), switching power supply (﹢\﹣), accessory power supply (﹢\﹣);

[0039] The AC power circuit includes device power supply (﹢\﹣), remote signal power supply (﹢\﹣), operation power supply (﹢\﹣), printer power supply (﹢\﹣), lighting power supply (﹢\﹣), gear control power supply (﹢\﹣), and accessory power supply circuit (﹢\﹣);

[0040] The actual functional definition of the AC current loop includes: three-phase current sampling (IA-IB-IC-IA`-IB`-IC`), single-phase current sampling (IA-IA`\IB-IB`\IC-IC`), zero-sequence current sampling (IM0\IM0`), gap current sampling (IG0\IG0`);

[0041] The actual functional definition of the AC voltage circuit includes: three-phase voltage sampling (UA-UB-UC-UA`-UB`-UC`), single-phase voltage sampling (UA-UA`\UB-UB`\UC-UC`), line voltage sampling (UAB-UAB`\UBC-UBC`\UCA-UCA`), zero-sequence voltage sampling (UM0\UM0`);

[0042] The actual functional definition of the DC current loop includes: DC current sampling (﹢\﹣);

[0043] The actual functional definition of the DC voltage loop includes: DC voltage sampling (﹢\﹣);

[0044] The actual function definition of each input terminal of the device in the input circuit is defined by referring to the input function of this input terminal described in the manual of the corresponding relay protection secondary device, including: the common terminal is defined as the input common (﹢\﹣);

[0045] The actual function definition of each output terminal of the device in the output circuit is defined by referring to the output function of this output terminal described in the manual of the corresponding relay protection secondary device, including the function description (﹢\﹣);

[0046] The actual function definition of each operation circuit terminal of the device in the operation circuit is defined by referring to the function of this terminal described in the manual of the corresponding relay protection secondary device, including closing position monitoring (﹢\﹣), tripping position monitoring (﹢\﹣), closing circuit (﹢\﹣), tripping circuit (﹢\﹣), manual closing, manual tripping, protection tripping, reclosing, and some special function inputs;

[0047] The actual functional definition of the communication timing loop includes: station control layer communication interface (MMSn), process layer communication interface (RXn\TXn), protection channel interface (RXn\TXn), system communication interface (MMSn), timing interface (SYN+\SYN﹣\SGND);

[0048] The actual functional definition of the print loop includes: print interface (RTS\TXD\SGND).

[0049] Definition of loop pairing terminal port: loop pairing terminal port refers to the terminal port associated with the relay protection secondary circuit among the relay protection secondary device port, backplane terminal block, panel cabinet accessory port, and accessory terminal block. The described terminal port and the corresponding loop pairing terminal port connect the relay protection secondary device and panel cabinet accessory into the secondary circuit to play a role.

[0050] In the case where the backplane terminal blocks and the accessory terminal blocks have multiple terminal blocks, the loop pairing terminal ports are the terminal blocks in the backplane terminal blocks and the accessory terminal blocks that can have a loop functional association and correspondence with the terminal blocks in the described backplane terminal blocks and the accessory terminal blocks. The loop connection formed by the backplane terminal blocks, the accessory terminal blocks and the loop pairing terminal ports can realize the established loop function of placing the relay protection secondary device and the panel cabinet accessories in the secondary circuit. The loop pairing terminal ports can be one or more.

[0051] For example, for the A-phase current flowing in from the A terminal and flowing out from the A` terminal, the loop pairing terminal port for the A terminal is the A` terminal, so the loop pairing terminal port definition that can be assigned to the A terminal can be expressed as AA`, and the loop pairing terminal port for the A` terminal is the A terminal, so the loop pairing terminal port definition that can be assigned to the A` terminal can be expressed as A`-A; for another example, for the A-phase current, the B-phase current, and the C-phase current flowing in from the A\B\C terminals and flowing out from the N terminal respectively, then the loop pairing terminal for the A terminal is the N terminal, so the loop pairing terminal port definition that can be assigned to the A terminal can be expressed as AN, the loop pairing terminal for the B terminal is the N terminal, so the loop pairing terminal port definition that can be assigned to the B terminal can be expressed as BN, the loop pairing terminal for the C terminal is the N terminal, so the loop pairing terminal port definition that can be assigned to the C terminal can be expressed as CN, and the loop pairing terminal for the N terminal is the A\B\C terminal, so the loop pairing terminal port definition that can be assigned to the N terminal can be expressed as NA\B\C.

[0052] S102: Extract the substation relay protection secondary circuit cable connection relationship from the relay protection secondary circuit cable connection description file, that is, the cable connection relationship in step S101, and establish a visualization template based on the circuit type definition, actual function definition and circuit pairing relationship definition of the relay protection secondary device port element, backplane terminal element, panel cabinet accessory port element and accessory terminal element in the relay protection secondary circuit cable connection description file. The visualization template includes a substation-level visualization template, a panel cabinet-level visualization template, a device-level visualization template and a circuit-level visualization template. According to the above visualization templates, the substation relay protection secondary circuit cable connection relationship is sorted out to generate a circuit hierarchical visualization display graphic. The circuit hierarchical visualization display graphic includes a substation-level visualization display graphic, a panel cabinet-level visualization display graphic, a device-level visualization display graphic and a circuit-level visualization display graphic. The substation relay protection secondary circuit cable connection relationship is displayed based on the circuit hierarchical visualization display graphic.

[0053] Creating a visualization template includes the following steps:

[0054] Establishing a visualization template and generating a loop hierarchical visualization graphic based on the visualization template specifically refers to:

[0055] Establish substation-level visualization display templates, panel-level visualization display templates, device-level visualization display templates, loop-level visualization display templates and corresponding designated display areas, and establish corresponding relationships between the relay protection secondary device port elements, backplane terminal elements, panel cabinet accessory port elements, accessory terminal elements and substation relay protection secondary circuit connections described in the substation relay protection secondary circuit cable connection description file.

[0056] See also Figure 2 , Establishing a substation-level visualization display template includes the following steps: formulate the panel cabinet placement area according to the predetermined panel cabinet number, draw the predetermined panel cabinet number and panel cabinet name display area inside the panel cabinet, draw the relay protection secondary device display area contained in the panel cabinet inside the panel cabinet, draw the relay protection secondary device name display area inside the relay protection secondary device display area, draw a cable connection area under each row of panel cabinets for placing inter-cabinet cable connection lines, and the inter-cabinet cable connection lines describe searching for cables whose starting point or end point is this panel cabinet from the inter-cabinet cable elements.

[0057] Generating a substation-level visualization display graphic according to a substation-level visualization display template includes the following steps: the number of the panel cabinet in the substation-level visualization display template refers to the panel cabinet number attribute, the name of the panel cabinet in the substation-level visualization display template refers to the panel cabinet name attribute, the order of the relay protection secondary devices contained in the panel cabinet in the substation-level visualization display template refers to the order of appearance of the relay protection secondary device elements under the panel cabinet element, and the relay protection secondary device name in the substation-level visualization display template refers to the device name attribute of the corresponding relay protection secondary device element in the panel cabinet element. Cables include electrical cables, optical cables and network cables, and different types of cables are distinguished by different colors.

[0058] See also Figure 3 , Establishing a cabinet-level visualization display template includes the following steps: drawing the placement area of ​​the focused cabinet, drawing the cabinet number and cabinet name display area of ​​the focused cabinet inside the focused cabinet, drawing the drawing space of the air switch, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer contained in the cabinet inside the cabinet, drawing the cable connection display area between the air switch, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, printer and device inside the cabinet, the cable connection lines inside the cabinet describe the cables drawn from each cable element in the cabinet, drawing the non-focused cabinet display area connected to the focused cabinet outside the focused cabinet, drawing the cable connection display area between the focused cabinet and the non-focused cabinet outside the focused cabinet, and the cable connection display area outside the cabinet describes the search for cables whose starting point or end point is the focused cabinet among the cable elements between the cabinets.

[0059] Generating a cabinet-level visualization display graphic according to a cabinet-level visualization display template includes the following steps: the cabinet number in the cabinet-level visualization display template refers to the cabinet number attribute, the cabinet name in the cabinet-level visualization display template refers to the cabinet name attribute, the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer in the cabinet-level visualization display template each refer to the number attribute of the corresponding cabinet accessory element, the device number in the cabinet in the cabinet-level visualization display template refers to the number attribute of the corresponding relay protection secondary device element, the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer in the cabinet-level visualization display template each refer to the name attribute of the corresponding cabinet accessory element, and the device name in the cabinet in the cabinet-level visualization display template refers to the name attribute of the corresponding relay protection secondary device element. The connection relationship between the internal circuit of the non-focused cabinet and the cable core access terminal block is not displayed.

[0060] See also Figure 4 , Establishing a device-level visualization display template includes the following steps: drawing a placement area for a focusing device, drawing a display area for the device number and device name of the focusing device inside the focusing device, drawing display areas for each circuit type according to the circuit type inside the focusing device, drawing a display area for the circuit connection relationship inside the focusing device inside each circuit type display area, displaying the electrical circuit on the board in the relay protection secondary device, drawing a display area for a non-focused device connected to the focusing device outside the focusing device, drawing a display area for the cable connection between the focusing device and the non-focused device outside the focusing device, the cable connection between the focusing device and the non-focused device includes the cable connection relationship inside the panel cabinet and the cable connection relationship outside the panel cabinet, and drawing the cable connection relationship of the air switch, pressure plate, five-protection lock, indicator light, handle, button, terminal, accessory relay, and printer in the panel cabinet.

[0061] Generating a device-level visualization display graphic according to a device-level visualization display template includes the following steps: the device number in the device-level visualization display template references the number attribute of the corresponding relay protection secondary device element, the device name in the device-level visualization display template references the name attribute of the corresponding relay protection secondary device element, the circuit type in the device-level visualization display template is obtained from the circuit type definition of the backplane terminal of the relay protection secondary device, and the circuit connection relationship inside the relay protection secondary device in the device-level visualization display template is obtained from the device internal cable connection relationship under the device element.

[0062] See also Figure 5, Establishing a circuit-level visualization display template includes the following steps: drawing a display area for all relay protection secondary devices contained in a certain substation relay protection secondary circuit or a certain type of substation relay protection secondary circuit, drawing a display area for the device number and device name of the relay protection secondary device in each relay protection secondary device display area, drawing a display area for the secondary circuit in the device through which the focused secondary circuit passes inside each relay protection secondary device display area, the secondary circuit in the device display area references the internal cable connection relationship of the relay protection secondary device element associated with the focused secondary circuit, and drawing a display area for the inter-device connection relationship of the focused circuit between the relay protection secondary devices between the relay protection secondary devices. The inter-device connection relationship display area includes the cable connection relationship inside the panel cabinet, the cable connection relationship outside the panel cabinet, and the cable connection relationship of the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal, accessory relay, and printer in the panel cabinet.

[0063] Generating a loop-level visualization display graphic according to a loop-level visualization display template includes the following steps: selecting a certain substation relay protection secondary circuit or all relay protection secondary devices included in a certain type of substation relay protection secondary circuit, the device number of each relay protection secondary device in the loop-level visualization display template references the device number attribute, and the name of each relay protection secondary device references the device name attribute.

[0064] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for visualizing a relay protection secondary circuit based on circuit stratification, characterized in that: The following steps are involved: Step 1: Model the substation relay protection secondary circuit, obtain the substation relay protection secondary circuit cable connection description file, and assign corresponding circuit type definition, actual function definition and circuit pairing terminal port definition to the relay protection secondary device port element, backplane terminal element, panel cabinet accessory port element and accessory terminal element in the substation relay protection secondary circuit cable connection description file; Step 2: Extract the substation relay protection secondary circuit cable connection relationship from the relay protection secondary circuit cable connection description file, establish a visualization template based on the circuit type definition, actual function definition and circuit pairing relationship definition of the relay protection secondary device port element, backplane terminal element, panel cabinet accessory port element and accessory terminal element in the relay protection secondary circuit cable connection description file, and generate a circuit hierarchical visualization display graphic according to the visualization display template. The visualization display template in step 2 includes a substation-level visualization display template, a cabinet-level visualization display template, a device-level visualization display template, and a loop-level visualization display template; The loop layered visualization display graphics include substation-level visualization display graphics, cabinet-level visualization display graphics, device-level visualization display graphics, and loop-level visualization display graphics. Establishing a substation-level visualization display template includes the following steps: formulate a panel cabinet placement area according to the predetermined panel cabinet number, draw a predetermined panel cabinet number and a panel cabinet name display area inside the panel cabinet, draw a relay protection secondary device display area contained in the panel cabinet inside the panel cabinet, draw a relay protection secondary device name display area inside the relay protection secondary device display area, and draw a cable connection area under each row of panel cabinets for placing inter-cabinet cable connection lines; Establishing a cabinet-level visualization display template includes the following steps: drawing a placement area for a focused cabinet, drawing a cabinet number and cabinet name display area for the focused cabinet inside the focused cabinet, drawing a drawing space for air switches, pressure plates, five-protection locks, indicator lights, handles, buttons, terminal blocks, accessory relays, and printers contained in the cabinet inside the cabinet, drawing a display area for cable connections between air switches, pressure plates, five-protection locks, indicator lights, handles, buttons, terminal blocks, accessory relays, printers, and devices inside the cabinet, the cable connection lines inside the cabinet describe the cables drawn from each cable element in the cabinet, drawing a display area for non-focused cabinets connected to the focused cabinet outside the focused cabinet, and drawing a display area for cable connections between the focused cabinet and the non-focused cabinet outside the focused cabinet; Establishing a device-level visualization display template includes the following steps: drawing a placement area for a focusing device, drawing a display area for the device number and device name of the focusing device inside the focusing device, drawing display areas for each type of circuit according to the circuit type inside the focusing device, drawing a display area for the circuit connection relationship inside the focusing device inside each circuit type display area, displaying the electrical circuit on the board in the relay protection secondary device, drawing a display area for a non-focusing device connected to the focusing device outside the focusing device, drawing a display area for the cable connection between the focusing device and the non-focusing device outside the focusing device, the cable connection between the focusing device and the non-focusing device includes the cable connection relationship inside the panel cabinet and the cable connection relationship outside the panel cabinet, and drawing the cable connection relationship of the air switch, pressure plate, five-protection lock, indicator light, handle, button, terminal, accessory relay, and printer in the panel cabinet; Establishing a circuit-level visualization display template includes the following steps: drawing a display area for all relay protection secondary devices contained in a focused secondary circuit or a type of secondary circuit, drawing a display area for the device number and device name of the relay protection secondary device in each relay protection secondary device display area, drawing a secondary circuit display area in the device through which the focused secondary circuit passes within each relay protection secondary device display area, the secondary circuit display area in the device references the internal cable connection relationship of the relay protection secondary device element associated with the focused secondary circuit, and drawing a display area for the inter-device connection relationship of the focused circuit between the relay protection secondary devices. The inter-device connection relationship display area includes the cable connection relationship inside the panel cabinet, the cable connection relationship outside the panel cabinet, and the cable connection relationship of the air switch, pressure plate, five-protection lock, indicator light, handle, button, terminal, accessory relay, and printer in the panel cabinet. Generating a substation-level visualization display graphic according to a substation-level visualization display template includes the following steps: the number of the panel cabinet in the substation-level visualization display template refers to the panel cabinet number attribute, the name of the panel cabinet in the substation-level visualization display template refers to the panel cabinet name attribute, the sequence of the relay protection secondary devices contained in the panel cabinet in the substation-level visualization display template refers to the sequence of appearance of the relay protection secondary device elements under the panel cabinet element, and the relay protection secondary device name in the substation-level visualization display template refers to the device name attribute of the corresponding relay protection secondary device element in the panel cabinet element; Generating a cabinet-level visualization display graphic according to a cabinet-level visualization display template includes the following steps: the cabinet number in the cabinet-level visualization display template refers to the cabinet number attribute, the cabinet name in the cabinet-level visualization display template refers to the cabinet name attribute, the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer in the cabinet-level visualization display template each have their own number reference to the number attribute of the corresponding cabinet accessory element, the device number in the cabinet in the cabinet-level visualization display template refers to the number attribute of the corresponding relay protection secondary device element, the circuit breaker, pressure plate, five-protection lock, indicator light, handle, button, terminal block, accessory relay, and printer in the cabinet-level visualization display template each have their own name reference to the name attribute of the corresponding cabinet accessory element, and the device name in the cabinet in the cabinet-level visualization display template refers to the name attribute of the corresponding relay protection secondary device element; Generating a device-level visualization display graphic according to a device-level visualization display template includes the following steps: the device number in the device-level visualization display template refers to the number attribute of the corresponding relay protection secondary device element, the device name in the device-level visualization display template refers to the name attribute of the corresponding relay protection secondary device element, the circuit type in the device-level visualization display template is obtained from the circuit type definition of the backplane terminal of the relay protection secondary device, and the circuit connection relationship inside the relay protection secondary device in the device-level visualization display template is obtained from the device internal cable connection relationship under the device element; Generating a loop-level visualization display graphic according to a loop-level visualization display template includes the following steps: selecting a certain substation relay protection secondary circuit or all relay protection secondary devices included in a certain type of substation relay protection secondary circuit, the device number of each relay protection secondary device in the loop-level visualization display template references the device number attribute, and the name of each relay protection secondary device references the device name attribute.

2. According to claim 1, a method for visualizing a relay protection secondary circuit based on circuit stratification is characterized in that: In the step 1, modeling the secondary circuit of the substation relay protection and obtaining the substation relay protection secondary circuit cable connection description file includes the following steps: Describes the inherent properties of the relay protection secondary device port elements of the substation, the inherent properties of the backplane terminal elements, the inherent properties of the panel cabinet accessory port elements, the inherent properties of the accessory terminal elements, and the inherent properties of the panel cabinet terminal block elements; describes the cable connection relationship between the relay protection secondary device port elements, the backplane terminal elements, the panel cabinet accessory port elements, the accessory terminal elements, and the panel cabinet terminal block elements; describes the panel cabinet number attribute, the panel cabinet name attribute of the panel cabinet element, the device number attribute, the device name attribute, and the internal cable connection relationship of the device of the relay protection secondary device element; describes the number attribute and the accessory name attribute of the panel cabinet accessory element; describes the cable connection relationship between the cable elements within the panel cabinet and the cable elements between the panel cabinets, thereby forming a substation relay protection secondary circuit cable connection description file.

3. A method for visualizing a relay protection secondary circuit based on circuit stratification according to claim 2, characterized in that: The loop type definition in step 1 includes: DC power supply loop, AC power supply loop, AC current loop, AC voltage loop, DC current loop, DC voltage loop, input loop, output loop, operation loop, communication timing loop, and printing loop.

4. The method for visualizing a relay protection secondary circuit based on circuit stratification according to claim 3 is characterized in that: The actual function definition in step 1 includes: the actual function definition of the DC power supply circuit, the actual function definition of the AC power supply circuit, the actual function definition of the AC current circuit, the actual function definition of the AC voltage circuit, the actual function definition of the DC current circuit, the actual function definition of the DC voltage circuit, the actual function definition of the input circuit, the actual function definition of the output circuit, the actual function definition of the operation circuit, the actual function definition of the communication timing circuit, and the actual function definition of the printing circuit.

5. The method for visualizing a relay protection secondary circuit based on circuit stratification according to claim 4 is characterized in that: The circuit pairing terminal ports in step 1 are the relay protection secondary device ports, backplane wiring terminals, panel cabinet accessory ports, and wiring terminal ports associated with the relay protection secondary circuit among the accessory wiring terminals.

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