Relay protection secondary circuit automatic monitoring method and device and electronic equipment

Abstract

The application discloses a kind of relay protection secondary circuit automatic monitoring method, device and electronic equipment.Transmission station operation when the protection action of first protection device trips and sends out open-out signal, based on SPD file, the protection device and open-in terminal of receiving the open-out signal are acquired;Based on the IPD file and SCD file of the protection device of receiving the open-out signal, open-in remote signal variable position condition is acquired, whether the loop between protection equipment is normal is judged;After the protection action of the first protection device trips, closes, based on SPD file, the open-in terminal of the first protection device connected with operating box trip position contact point is acquired;Based on the IPD file and SCD file of first protection device, switch position remote signal variable position condition is acquired, whether the trip and switch position related loop of closing is normal is judged.SPD uses this method to realize the automatic monitoring function of protection secondary circuit, is conducive to the safety hidden danger of protection secondary circuit being found in time, and comprehensively promotes the operation and maintenance level of relay protection system.

Description

Technical Field

[0001] This invention belongs to the field of relay protection technology, and specifically relates to an automatic monitoring method, device and electronic equipment for secondary circuits of relay protection. Background Technology

[0002] The process-level virtual loop modeling of intelligent substations lays the foundation for online monitoring of secondary loops, and loop diagnostic functions have already been implemented in intelligent waveform recorders. However, for a long time, the lack of digital models for conventional secondary loop design has made it difficult for substations using conventional sampling and tripping methods to achieve automatic monitoring of secondary loops, resulting in the inability to detect loop hazards in a timely manner and affecting the reliability of protection operation.

[0003] Therefore, there is an urgent need to study automatic monitoring methods for secondary circuits of substation relay protection in order to improve the practicality of online monitoring functions for secondary circuits, promptly detect potential safety hazards in the secondary circuits, and comprehensively improve the operation and maintenance level of relay protection systems. Summary of the Invention

[0004] The purpose of this invention is to provide a method, device, and electronic equipment for automatic monitoring of secondary circuits of substation relay protection, in order to solve the problem that it is difficult for substations using conventional sampling and tripping methods to achieve automatic monitoring of secondary circuits, resulting in the inability to detect circuit hazards in a timely manner and affecting the reliability of protection operation.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] According to the first aspect of this application, an automatic monitoring method for the secondary circuit of a relay protection system is proposed, comprising:

[0007] When the first protection device trips and sends an output signal during substation operation, the protection device receiving the output signal and the input terminal are obtained based on the substation physical description (SPD) file.

[0008] The changes in the input remote signaling status are obtained based on the secondary equipment physical description (IPD) file and the substation configuration description (SCD) file of the protection device that receives the output signal, and the normality of the circuit between protection devices is determined based on the changes in the input remote signaling status.

[0009] After the first protection device trips or closes, the input terminal of the first protection device is obtained based on the SPD file, which connects to the trip position contact of the control box.

[0010] Based on the IPD file and SCD file of the first protection device, the remote signaling change of the switch position is obtained, and the tripping, closing and switch position related circuits are judged to be normal based on the remote signaling change of the switch position.

[0011] According to some embodiments, the step of obtaining the protection device and input terminal that receive the output signal based on the SPD file includes: sequentially querying the output contact terminal of the first protection device to find the output pressure plate connected to the output contact terminal, the terminal of the cabinet where the first protection device is located connected to the output pressure plate, and the other protection cabinet terminal connected to the terminal of the cabinet where the first protection device is located, and the protection device and input terminal that receive the output signal issued by the first protection device connected to the other protection cabinet terminal.

[0012] According to some embodiments, obtaining the input remote signal change status based on the IPD file and SCD file of the protection device receiving the output signal includes: querying the icdRef attribute of the input terminal according to the IPD file of the protection device receiving the output signal to obtain the reference path of the signal corresponding to the input terminal, and querying the corresponding input remote signal change status in the SCD file according to the signal reference path.

[0013] According to some embodiments, determining whether the circuit between protection devices is normal based on the remote signaling change status includes: comparing whether the remote signaling change status is consistent with the protection action status of the first protection device. If they are consistent, it indicates that the circuit between protection devices is normal; otherwise, it indicates that there is a problem with the circuit between protection devices.

[0014] According to some embodiments, obtaining the remote signaling change of the switch position based on the IPD file and SCD file of the first protection device includes: querying the icdRef attribute of the input terminal of the first protection device based on the IPD file of the first protection device to obtain the reference path of the switch position signal corresponding to the input terminal, and querying the corresponding remote signaling change of the switch position in the SCD file according to the reference path of the switch position signal.

[0015] According to some embodiments, the step of judging whether the tripping and closing circuit and the circuit related to the switch position are normal based on the remote signaling change of the switch position includes: comparing whether the remote signaling change of the switch position is consistent with the operation of the first protection device. If they are consistent, it indicates that the tripping and closing circuit and the circuit related to the switch position are normal; otherwise, it indicates that there is a problem with the tripping and closing circuit and the circuit related to the switch position.

[0016] According to a second aspect of this application, an automatic monitoring device for secondary circuits of relay protection is proposed, comprising: a circuit information acquisition unit between protection devices, a circuit determination unit between protection devices, a switch circuit information acquisition unit, and a switch circuit determination unit, wherein:

[0017] The protection device circuit information acquisition unit is used to acquire the protection device and input terminal receiving the output signal based on the SPD file when the protection action of the first protection device trips and sends an output signal during substation operation.

[0018] The protection device inter-circuit determination unit is used to obtain the input remote signal change status based on the IPD file and SCD file of the protection device that receives the output signal, and to determine whether the inter-circuit of the protection device is normal based on the input remote signal change status.

[0019] The switch circuit information acquisition unit is used to acquire the input terminal of the first protection device that connects to the trip position contact of the control box based on the SPD file after the protection action of the first protection device trips or closes.

[0020] The switch circuit determination unit is used to obtain the remote signal change status of the switch position based on the IPD file and SCD file of the first protection device, and to determine whether the tripping, closing and switch position related circuits are normal based on the remote signal change status of the switch position.

[0021] According to a third aspect of this application, an electronic device includes: a processor; and a memory storing computer instructions that, when executed by the processor, cause the processor to perform the aforementioned automatic monitoring method for secondary circuits of relay protection.

[0022] According to a fourth aspect of this application, a non-transient computer storage medium stores a computer program that, when executed by a plurality of processors, causes the processors to perform the aforementioned automatic monitoring method for secondary circuits of relay protection.

[0023] Compared with the prior art, the beneficial effects achieved by this application are: making full use of the digital design model, establishing the correlation between the protection secondary circuit and remote signaling information, realizing the automatic monitoring function of the protection secondary circuit, which is conducive to timely detection of safety hazards in the protection secondary circuit and comprehensively improving the operation and maintenance level of the relay protection system. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an automatic testing method for relay protection based on digital design, provided in an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of a substation secondary circuit provided in an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of an automatic relay protection testing device based on digital design provided in an embodiment of this application;

[0027] Figure 4 This diagram illustrates the structure of an electronic device provided in this application. Detailed Implementation

[0028] The technical solution and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] In existing technologies, conventional sampling and tripping methods make it difficult for substations to achieve automatic monitoring of secondary circuits, resulting in the inability to detect potential circuit hazards in a timely manner and affecting the reliability of protection operation.

[0030] In recent years, industry experts have formulated digital design specifications for substation secondary circuits, defining physical description (IPD) files for secondary equipment, physical description (CPD) files for cabinets, and physical description (SPD) files for substations. These specifications standardize the physical circuit interfaces for secondary equipment, digital design of cabinets, and modeling specifications for the entire substation's secondary circuits, paving the way for substations using conventional sampling and tripping methods to achieve automatic monitoring of secondary circuits.

[0031] Based on this, this application proposes an embodiment of an automatic testing method for relay protection based on digital design, such as... Figure 1 As shown, the steps include the following.

[0032] In step S100, when the first protection device trips and sends an output signal during substation operation, the protection device receiving the output signal and the input terminal are obtained based on the SPD file.

[0033] In some embodiments, the process involves sequentially querying the output contact terminal of the first protection device to the output pressure plate connected to the output contact terminal, the terminal of the cabinet containing the first protection device connected to the output pressure plate, and the terminals of other protection cabinets connected to the terminal of the cabinet containing the first protection device. The other protection cabinet terminals are connected to the protection devices that receive the output signal from the first protection device and their input terminals. Generally, not all input terminals pass through the input pressure plate. If there is no input pressure plate, the input terminals of the protection devices connected to the other protection cabinet terminals can be directly queried. When there is an input pressure plate, the process of querying the input terminals of the protection devices connected to the other protection cabinet terminals that receive the output signal from the first protection device is: other protection cabinet terminals --- input pressure plate --- protection device and input terminal.

[0034] Combination Figure 2 The substation secondary circuit diagram, based on the SPD file circuit design, shows that the line protection action activation A-phase failure terminal 2n11 is connected to one end of the activation A-phase failure pressure plate, the other end of the activation A-phase failure pressure plate is connected to the line protection panel 5D11 terminal, the line protection panel 5D11 terminal is connected to the bus protection panel 2D25 terminal, the bus protection panel 2D25 terminal is connected to one end of the branch X activation A-phase failure pressure plate, and the other end of the branch X activation A-phase failure pressure plate is connected to the bus protection device 5n03 terminal.

[0035] When the line protection device in the substation issues a start A-phase failure signal during operation, the bus protection device 5n03 terminal receiving the start A-phase failure signal is retrieved according to the SPD file. Specifically, this includes: sequentially querying the start A-phase failure pressure plate from the line protection device's start A-phase failure terminal 2n11, the line protection cabinet 5D11 panel terminal, the bus protection cabinet 2D25 panel terminal, the branch X start A-phase failure pressure plate, and the bus protection device 5n03 terminal.

[0036] In step S200, the input remote signal change status is obtained based on the IPD file and SCD file of the protection device that receives the output signal, and the normality of the circuit between protection devices is determined based on the input remote signal change status.

[0037] In some embodiments, obtaining the input remote signal change status based on the IPD file and SCD file of the protection device receiving the output signal includes: querying the icdRef attribute of the input terminal according to the IPD file of the protection device receiving the output signal to obtain the reference path of the signal corresponding to the input terminal, and querying the corresponding input remote signal change status in the SCD file according to the signal reference path.

[0038] In some embodiments, determining whether the circuit between protection devices is normal based on the remote signaling change status includes: comparing whether the remote signaling change status is consistent with the protection action status of the first protection device. If they are consistent, it indicates that the circuit between protection devices is normal; otherwise, it indicates that there is a problem with the circuit between protection devices.

[0039] Combination Figure 2 The substation secondary circuit diagram shows that, according to the bus protection IPD file, the icdRef attribute of terminal 5n03 is PROT / B05BFGGIO1.Ind1.stVal. By referring to the path "PROT / B05BFGGIO1.Ind1.stVal", the remote signal change status of this input during the line protection operation can be queried in the SCD file. If it is consistent with the start-up A-phase failure signal of the line protection device, it indicates that the circuit between the protection devices is normal; otherwise, it indicates that there is a problem with the circuit between the protection devices.

[0040] In step S300, after the protection action of the first protection device trips or closes, the input terminal of the first protection device connected to the trip position contact of the operation box is obtained based on the SPD file.

[0041] Combination Figure 2The schematic diagram of the secondary circuit of the substation, taking phase A as an example, is based on the circuit design of the SPD file. The trip position terminal 3n02 of phase A of the operation box is connected to the terminal of the line protection panel 2D22. The terminal of the line protection panel 2D22 is connected to the terminal of the line protection panel 3D11. The terminal of the line protection panel 3D11 is connected to the terminal of the line protection 3n09.

[0042] Therefore, when phase A of the control box trips, the A-phase trip position input terminal 3n09 of the line protection device connected to the A-phase trip position contact of the control box is obtained according to the SPD file. Specifically, this includes: sequentially querying the line protection cabinet 2D22 panel terminal, line protection cabinet 3D11 panel terminal, and line protection 3n09 terminal from the A-phase trip position terminal 3n02 of the control box.

[0043] In step S400, the remote signaling change of the switch position is obtained based on the IPD file and SCD file of the first protection device, and the tripping and closing and switch position related circuits are judged to be normal based on the remote signaling change of the switch position.

[0044] In some embodiments, obtaining the remote signaling change of the switch position based on the IPD file and SCD file of the first protection device includes: querying the icdRef attribute of the input terminal of the first protection device based on the IPD file of the first protection device to obtain the reference path of the switch position signal corresponding to the input terminal, and querying the corresponding remote signaling change of the switch position in the SCD file according to the reference path of the switch position signal.

[0045] In some embodiments, determining whether the tripping / closing and switch position-related circuits are normal based on the remote signaling change of the switch position includes: comparing whether the remote signaling change of the switch position is consistent with the operation of the first protection device. If they are consistent, it indicates that the tripping / closing and switch position-related circuits are normal; otherwise, it indicates that there is a problem with the tripping / closing and switch position-related circuits.

[0046] Combination Figure 2 The substation secondary circuit diagram is shown. According to the line protection IPD file, the icdRef attribute of terminal 3n09 is PROT / GGIO1.Ind1.stVal. Based on the reference path "PROT / B05BFGGIO1.Ind1.stVal", the remote signaling change of the A-phase switch position during the line protection trip is queried in the SCD file. If it is consistent with the operation of the line protection device, it indicates that the trip, closing and switch position related circuits are normal. Otherwise, it indicates that there is a problem with the related circuits.

[0047] Figure 3 A schematic diagram of an automatic relay protection test device based on digital design, illustrating an exemplary embodiment, is shown.

[0048] like Figure 3As shown, the testing device 500 includes: a protection device circuit information acquisition unit 501, a protection device circuit determination unit 502, a switch circuit information acquisition unit 503, and a switch circuit determination unit 504.

[0049] in:

[0050] The protection device circuit information acquisition unit 501 is used to acquire the protection device and input terminal receiving the output signal based on the SPD file when the protection action of the first protection device in the substation trips and sends an output signal.

[0051] In some embodiments, in the protection device inter-circuit information acquisition unit 501, the acquisition of the protection device and input terminal receiving the output signal based on the SPD file includes: sequentially querying from the output contact terminal of the first protection device to the output pressure plate connected to the output contact terminal, the terminal of the cabinet where the first protection device is located connected to the output pressure plate, and the other protection cabinet terminals connected to the terminal of the cabinet where the first protection device is located, and the protection device and input terminal receiving the output signal issued by the first protection device connected to the other protection cabinet terminals.

[0052] The protection device inter-circuit determination unit 502 is used to obtain the input remote signal change status based on the IPD file and SCD file of the protection device that receives the output signal, and to determine whether the inter-circuit of the protection device is normal based on the input remote signal change status.

[0053] In some embodiments, in the protection device inter-loop determination unit 502, the step of obtaining the input remote signal change status based on the IPD file and SCD file of the protection device receiving the output signal includes: querying the icdRef attribute of the input terminal according to the IPD file of the protection device receiving the output signal to obtain the reference path of the signal corresponding to the input terminal, and querying the corresponding input remote signal change status in the SCD file according to the signal reference path.

[0054] In some embodiments, in the protection device inter-circuit determination unit 502, the determination of whether the protection device inter-circuit is normal based on the remote signal change status includes: comparing whether the input remote signal change status is consistent with the protection action status of the first protection device. If the two are consistent, it indicates that the protection device inter-circuit is normal; otherwise, it indicates that there is a problem with the protection device inter-circuit.

[0055] The switch circuit information acquisition unit 503 is used to acquire the input terminal of the first protection device connected to the trip position contact of the operation box based on the SPD file after the protection action of the first protection device trips or closes.

[0056] The switch circuit determination unit 504 is used to obtain the remote signal change status of the switch position based on the IPD file and SCD file of the first protection device, and to determine whether the tripping, closing and switch position related circuits are normal based on the remote signal change status of the switch position.

[0057] In some embodiments, in the switch circuit determination unit 504, obtaining the switch position remote signal change based on the first protection device IPD file and SCD file includes: querying the icdRef attribute of the input terminal of the first protection device based on the first protection device IPD file to obtain the reference path of the switch position signal corresponding to the input terminal, and querying the corresponding switch position remote signal change in the SCD file according to the switch position signal reference path.

[0058] In some embodiments, in the switch circuit determination unit 504, the determination of whether the tripping and closing circuit and the switch position related circuit are normal based on the switch position remote signal change includes: comparing whether the switch position remote signal change is consistent with the operation of the first protection device. If they are consistent, it indicates that the tripping and closing circuit and the switch position related circuit are normal; otherwise, it indicates that there is a problem with the tripping and closing circuit and the switch position related circuit.

[0059] Figure 4 This diagram illustrates the structure of an electronic device provided in this application.

[0060] See Figure 4 , Figure 4 An electronic device is provided, including a processor and a memory. The memory stores computer instructions, which, when executed by the processor, cause the processor to perform the computer instructions to achieve the following: Figure 1 The method and its detailed scheme are shown.

[0061] It should be understood that the above-described device embodiments are merely illustrative, and the device disclosed in this invention can be implemented in other ways. For example, the division of units / modules described in the above embodiments is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units, modules, or components may be combined, integrated into another system, or some features may be ignored or not executed.

[0062] Furthermore, unless otherwise specified, the functional units / modules in the various embodiments of the present invention can be integrated into one unit / module, or each unit / module can exist physically separately, or two or more units / modules can be integrated together. The integrated units / modules described above can be implemented in hardware or as software program modules.

[0063] If the integrated unit / module is implemented in hardware, the hardware can be digital circuits, analog circuits, etc. The physical implementation of the hardware structure includes, but is not limited to, transistors, memristors, etc. Unless otherwise specified, the processor or chip can be any suitable hardware processor, such as a CPU, GPU, FPGA, DSP, and ASIC, etc. Unless otherwise specified, the on-chip cache, off-chip memory, and storage can be any suitable magnetic or magneto-optical storage medium, such as resistive random access memory (RRAM), dynamic random access memory (DRAM), static random access memory (SRAM), enhanced dynamic random access memory (EDRAM), high-bandwidth memory (HBM), hybrid memory cube (HMC), etc.

[0064] If the integrated unit / module is implemented as a software program module and sold or used as an independent product, it can be stored in a computer-readable storage device (CMD). Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned memory includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0065] This application embodiment also provides a non-transitory computer storage medium storing a computer program, which, when executed by multiple processors, causes the processors to perform actions such as... Figure 1 The method and its detailed scheme are shown.

[0066] The above embodiments are merely illustrative of the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solutions based on the technical concept proposed in this invention shall fall within the scope of protection of this invention.

Claims

1. A method of automatically monitoring a protective relaying secondary circuit, characterized in that, include: When the first protection device trips and sends an output signal during substation operation, the protection device receiving the output signal and the input terminal are obtained based on the substation physical description (SPD) file. The changes in the input remote signaling status are obtained based on the secondary equipment physical description (IPD) file and the substation configuration description (SCD) file of the protection device that receives the output signal, and the normality of the circuit between protection devices is determined based on the changes in the input remote signaling status. After the first protection device trips or closes, the input terminal of the first protection device is obtained based on the SPD file, which connects to the trip position contact of the control box. Based on the IPD file and SCD file of the first protection device, the remote signaling change of the switch position is obtained, and the tripping, closing and switch position related circuits are judged to be normal based on the remote signaling change of the switch position.

2. The method as described in claim 1, characterized in that, The step of obtaining the protection device and input terminal that receive the output signal based on the SPD file includes: sequentially querying the output contact terminal of the first protection device to find the output pressure plate connected to the output contact terminal, the terminal of the cabinet where the first protection device is located connected to the output pressure plate, and the other protection cabinet terminals connected to the terminal of the cabinet where the first protection device is located, and the protection device and input terminal that receive the output signal issued by the first protection device connected to the other protection cabinet terminals.

3. The method as described in claim 1, characterized in that, The step of obtaining the input remote signal change status based on the IPD file and SCD file of the protection device receiving the output signal includes: querying the icdRef attribute of the input terminal according to the IPD file of the protection device receiving the output signal to obtain the reference path of the signal corresponding to the input terminal, and querying the corresponding input remote signal change status in the SCD file according to the reference path of the signal.

4. The method as described in claim 1, characterized in that, The step of determining whether the circuit between protection devices is normal based on the remote signal change status includes: comparing whether the remote signal change status is consistent with the protection action status of the first protection device. If they are consistent, it indicates that the circuit between protection devices is normal; otherwise, it indicates that there is a problem with the circuit between protection devices.

5. The method as described in claim 1, characterized in that, The step of obtaining the remote signal change of the switch position based on the IPD file and SCD file of the first protection device includes: querying the icdRef attribute of the input terminal of the first protection device based on the IPD file of the first protection device to obtain the reference path of the switch position signal corresponding to the input terminal, and querying the corresponding remote signal change of the switch position in the SCD file according to the reference path of the switch position signal.

6. The method as described in claim 1, characterized in that, The step of determining whether the tripping and closing circuit and the circuit related to the switch position are normal based on the remote signaling change of the switch position includes: comparing whether the remote signaling change of the switch position is consistent with the operation of the first protection device. If they are consistent, it indicates that the tripping and closing circuit and the circuit related to the switch position are normal; otherwise, it indicates that there is a problem with the tripping and closing circuit and the circuit related to the switch position.

7. An automatic monitoring device for secondary circuits of relay protection, characterized in that, include: The system includes a protection equipment inter-circuit information acquisition unit, a protection equipment inter-circuit determination unit, a switch circuit information acquisition unit, and a switch circuit determination unit, among which: The protection device circuit information acquisition unit is used to acquire the protection device and input terminal receiving the output signal based on the SPD file when the protection action of the first protection device trips and sends an output signal during substation operation. The protection device inter-circuit determination unit is used to obtain the input remote signal change status based on the IPD file and SCD file of the protection device that receives the output signal, and to determine whether the inter-circuit of the protection device is normal based on the input remote signal change status. The switch circuit information acquisition unit is used to acquire the input terminal of the first protection device that connects to the trip position contact of the control box based on the SPD file after the protection action of the first protection device trips or closes. The switch circuit determination unit is used to obtain the remote signal change status of the switch position based on the IPD file and SCD file of the first protection device, and to determine whether the tripping, closing and switch position related circuits are normal based on the remote signal change status of the switch position.

8. An electronic device, characterized in that, include: processor; as well as A memory storing computer instructions that, when executed by the processor, cause the processor to perform the method according to any one of claims 1-6.

9. A non-transitory computer storage medium storing a computer program that, when executed by a plurality of processors, causes the processors to perform the method of any one of claims 1-6.

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