Automatic detection method and system for relay protection screen cabinet

Abstract

The invention discloses an automatic detection method and system for a relay protection screen cabinet, and belongs to the technical field of relay protection screen cabinet detection, and the method comprises the steps: S1, building a screen cabinet digital model based on the design parameters of the relay protection screen cabinet, and verifying the screen cabinet digital model based on a standard criterion to obtain a standard digital model; s2, determining a detection item based on the line structure of the standard digital model, and constructing a detection outline based on the detection item and the standard digital model; s3, the corresponding relay protection screen cabinet executes a corresponding detection action based on the detection outline to obtain detection data, and performs fault analysis based on the detection data to determine a screen cabinet fault; s4, based on the screen cabinet fault arrangement detection outline, the detection action and the detection data, obtaining a detection report; according to the invention, the problem of incomplete detection caused by dividing the test case of the relay protection screen cabinet into a plurality of sub test cases in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of relay protection panel cabinet detection, and in particular to an automatic detection method and system for a relay protection panel cabinet. Background Art

[0002] With the development of power systems, the local structure of power systems is becoming more and more complex. In order to protect the local part of the power system, the corresponding relay protection cabinets are all customized according to the local structure of the power system, resulting in almost no identical relay protection cabinets. When operation and maintenance personnel test the relay protection cabinets, they need to debug each circuit of the relay protection cabinet one by one according to the corresponding design drawings. The whole process involves tedious steps such as frequent replacement of testing instruments, adjustment of instrument gears, and modification of wiring. In addition, due to the complexity of the design drawings, it is easy to cause problems such as missed tests, insufficient tests, and incomplete tests.

[0003] Chinese patent, publication number: CN115688492B, publication date: January 3, 2023, discloses a method for digital modeling and intelligent detection of secondary power equipment, including: extracting electrical signals, physical locations and information attributes of secondary power equipment, and constructing digital modeling labels of secondary power equipment based on the electrical signals, physical locations and information attributes of secondary power equipment, and constructing multiple community digital models of secondary power equipment based on the identity of the digital modeling labels of secondary power equipment; sequentially formulating the optimal community test case of each community digital model through a neural network according to the digital modeling label of the secondary power equipment in each community digital model, and inputting the display data of the secondary power equipment in the community digital model with the optimal community test case applied to the preset detection model to locate the power fault point in the community digital model; and the invention divides the digital model of the secondary power equipment into multiple community digital models, which requires matching when setting the test case, otherwise there will be a problem of incomplete detection. Summary of the invention

[0004] The purpose of the present invention is to address the problem that the prior art divides the test cases of a relay protection panel cabinet into multiple sub-test cases, resulting in incomplete detection; an automatic detection method and system for a relay protection panel cabinet are proposed, a standard digital model is constructed based on the design parameters and specification criteria of the relay protection panel cabinet, and a detection outline is constructed according to the standard digital model and the detection items determined based on the line structure of the standard digital model. Then, the corresponding relay protection panel cabinet executes corresponding detection actions based on the detection outline to obtain detection data, and a fault analysis is performed based on the detection data to determine the panel cabinet fault. Finally, the detection outline, detection actions, and detection data are sorted out based on the panel cabinet fault to obtain a detection report; the present invention significantly improves the comprehensiveness of the relay protection panel cabinet detection by executing detection actions in response to the detection outline through the corresponding relay protection panel cabinet.

[0005] In a first aspect, a technical solution provided in an embodiment of the present invention is a method for automatically detecting a relay protection panel cabinet, comprising the following steps: S1. Establish a digital model of the relay protection panel cabinet based on the design parameters of the panel cabinet, and verify the digital model of the panel cabinet based on the specification criteria to obtain a standard digital model; S2. Determine the inspection items based on the line structure of the standard digital model, and construct the inspection outline based on the inspection items and the standard digital model; S3, the corresponding relay protection panel cabinet performs corresponding detection actions based on the detection outline to obtain detection data, and performs fault analysis based on the detection data to determine the panel cabinet fault; S4. Based on the panel cabinet fault, the detection outline, detection actions, and detection data are organized to obtain a detection report.

[0006] In this scheme, since the relay protection cabinet needs to be customized according to the power system structure when in use, resulting in different relay protection cabinets having different structures, a cabinet digital model that can accurately describe the relay protection cabinet can be established based on the design parameters of the relay protection cabinet, and then the cabinet digital model is verified based on the specification criteria to obtain a standard digital model, thereby effectively improving the accuracy and rationality of the standard digital model. Although the standard digital model of the corresponding relay protection cabinet has been obtained at this time, the specific protection action of the relay protection cabinet is unknown, so the main inspection items when inspecting the relay protection cabinet are also unknown. The inspection items can be determined based on the line structure of the standard digital model, and then the standard digital model can be used to determine the inspection items. The character model is used to construct a detection outline, and the detection outline corresponding to the protection action of the relay protection panel cabinet is clearly defined, so as to effectively ensure the comprehensiveness of the detection items of the relay protection panel cabinet and the correctness of the detection steps; then, the corresponding relay protection panel cabinet executes the corresponding detection action based on the detection outline to obtain detection data, and performs fault analysis based on the detection data to determine the panel cabinet fault, so as to accurately analyze whether the corresponding relay protection panel cabinet has a fault under the premise of comprehensive detection; finally, the detection outline, detection action, and detection data are sorted out based on the panel cabinet fault to obtain a detection report; the present application significantly improves the comprehensiveness and accuracy of the relay protection panel cabinet detection by executing the detection action in response to the detection outline through the corresponding relay protection panel cabinet.

[0007] Preferably, in S1, the specific process of establishing the digital model of the relay protection panel cabinet based on the design parameters of the relay protection panel cabinet is: S111. Determine design parameters based on the design drawings corresponding to the relay protection cabinet, where the design parameters at least include the type of relay protection device, terminal configuration, and electrical signal type; S112. Determine the terminal position and electrical signal position based on the relay protection device connection technology and design specifications combined with design parameters; S113. Establish a digital model of the panel cabinet based on the terminal positions and electrical signal positions.

[0008] In this scheme, after determining the design parameters based on the design drawings corresponding to the relay protection panel cabinet, only the type of relay protection device, terminal configuration, electrical signal type and other information of the relay protection panel cabinet can be known. In order to avoid information recognition errors caused by the complexity or damage of the design drawings, it is also necessary to match the known design parameters based on the relay protection device connection technology and design specifications, and clarify the correspondence between the terminal configuration and the electrical signal type under the premise of the relay protection device type, so as to determine the terminal position and electrical signal position that are consistent with the relay protection device connection technology and design specifications, and then establish a digital file based on the determined terminal position, electrical signal position and the design parameters to obtain the panel cabinet digital model corresponding to the relay protection panel cabinet.

[0009] Preferably, in S1, the specific process of verifying the digital model of the panel cabinet based on the standard criteria to obtain the standard digital model is: S121, extracting the correspondence between the terminals and the electrical signals in the digital model of the panel cabinet to obtain the signal terminal structure, and extracting the correspondence between the terminals and the relay protection device in the digital model of the panel cabinet to obtain the device terminal structure; Simultaneously, based on the standard criteria, the standard correspondence between the terminal and the electrical signal is extracted to obtain the standard signal terminal structure, and based on the standard criteria, the standard correspondence between the terminal and the relay protection device is extracted to obtain the standard device terminal structure; S122, performing a matching comparison based on the signal terminal structure and the standard signal terminal structure, if the signal terminal structure is consistent with the standard signal terminal structure, it is determined that the comparison between the terminal and the electrical signal is successful, otherwise it is determined that the comparison between the terminal and the electrical signal fails; Synchronously, a matching comparison is performed based on the device terminal structure and the standard device terminal structure. If the device terminal structure is consistent with the standard device terminal structure, it is determined that the comparison between the terminal and the relay protection device is successful, otherwise it is determined that the comparison between the terminal and the relay protection device fails; S123. When the terminal is successfully compared with the electrical signal and the terminal is successfully compared with the relay protection device, the corresponding panel cabinet digital model is marked as the standard digital model.

[0010] In this scheme, when the structures of the relay protection cabinets are inconsistent, the protection actions performed by the relay protection cabinets are different, so the detection actions of the relay protection cabinets are also different; in order to ensure that the established cabinet digital model is consistent with the structure of the target relay protection cabinet and avoid detection errors caused by different structures, it is necessary to infer the signal terminal structure representing the connection structure between the terminal and the electrical signal based on the correspondence between the terminal and the electrical signal, and to infer the device terminal structure representing the connection structure between the terminal and the relay protection device based on the correspondence between the terminal and the relay protection device. In addition, a standard criterion is established according to the structure of the target relay protection cabinet, and the standard criterion at least includes the correspondence between the terminals, electrical signals, relay protection devices, etc. in the target relay protection cabinet, so that the standard signal terminal structure and the standard device terminal structure can be extracted based on the standard criterion; then, the signal terminal structure is structurally matched and compared with the standard signal terminal structure, and the device terminal structure is structurally matched and compared with the standard device terminal structure, and the cabinet digital model with successful comparisons is marked as the standard digital model.

[0011] Preferably, in S2, the specific process of determining the inspection items based on the circuit structure of the standard digital model is: S211, analyzing the standard digital model based on the digital model analysis criteria to obtain a circuit structure, wherein the circuit structure at least includes a schematic diagram, a loop logic diagram, and a wiring diagram; S212, determining the electrical circuit and circuit function of the standard digital model based on the schematic diagram, circuit logic diagram and wiring diagram; S213: Determine the inspection items based on the electrical circuit and circuit function in combination with the preset inspection target.

[0012] In this scheme, the schematic diagram, loop logic diagram and wiring diagram obtained by parsing the digital file according to the digital file parsing criteria corresponding to the standard digital model are used to analyze the flow path of the electrical signal of the corresponding relay protection panel cabinet. The digital file is essentially a standard digital model, and the electrical circuit in the standard digital model and the circuit function corresponding to the electrical circuit can be determined through the flow path of the electrical signal. Then, based on the electrical circuit and the circuit function, the line structure corresponding to the protection action of the corresponding relay protection panel cabinet is analyzed. Then, based on the preset detection target, the entire protection action process is decomposed to determine the detection items, effectively avoiding the missing of detection items due to unclear line structure corresponding to the protection action of the relay protection panel cabinet.

[0013] Preferably, in S2, the specific process of constructing the inspection outline based on the inspection items and the standard digital model is: S221, determining the detection steps based on the terminal attributes and the detection items in the standard digital model, and determining the electrical signal based on the wiring diagram corresponding to the detection item; S222, determining the excitation type and excitation value based on the type of the electrical signal, and arranging the detection steps, excitation types and excitation values ​​to obtain a detection outline; The detection step at least includes a detection action and a detection action sequence.

[0014] In this scheme, when the relay protection panel cabinet is directly inspected, it can be carried out according to the protection action of the relay protection panel cabinet. However, the standard digital model is essentially a digital file, which cannot intuitively reflect the protection action of the corresponding relay protection panel cabinet. It is necessary to determine the inspection steps based on the terminal attributes and inspection items in the standard digital model, clarify the connection sequence of each terminal when performing the corresponding protection action, and determine the excitation type and excitation value based on the electrical signal corresponding to the inspection item to obtain the input excitation of the inspection process. The excitation includes voltage, current, etc., and then the connection sequence of the terminals is sorted to obtain the detection action sequence, and the switch states corresponding to the terminals and the connection sequence are sorted to obtain the detection action. Finally, the detection action sequence, detection action, excitation type and excitation value are sorted to obtain the detection outline.

[0015] Preferably, in S3, the specific process of the corresponding relay protection panel cabinet performing the corresponding detection action based on the detection outline to obtain the detection data is: S311, extracting the excitation type, excitation value, detection action and detection action sequence in the detection outline, and adjusting the excitation source of the automatic detection system of the relay protection panel cabinet according to the excitation type and excitation value; S312. The automatic detection system of the relay protection panel cabinet that has completed the adjustment of the excitation source executes the detection action in response to the detection action sequence, and collects feedback data during the detection process to obtain detection data.

[0016] In this scheme, after the excitation source adjustment is completed, the corresponding relay protection panel cabinet automatic detection system drives the corresponding relay protection panel cabinet to perform detection actions for detection based on the detection action sequence, and collects detection data by reading feedback data and other means during the detection process.

[0017] Preferably, in S3, the specific process of performing fault analysis based on the detection data to determine the fault of the panel cabinet is: S321, selecting a preset test result parameter set based on the test steps corresponding to the test data and the preset test steps, and screening the test result parameter set to obtain test result parameters based on the preset test parameters and the test outline corresponding to the test data; S322, performing trend comparison analysis based on the test result parameters and the detection data, if the change trend of the test result parameters is consistent with the change trend of the detection data, executing S323, if the change trend of the test result parameters is inconsistent with the change trend of the detection data, it is determined that the corresponding electrical circuit has a fault; S323, comparing the difference between the detection data and the test result parameter and a preset difference range, if the difference is within the difference range, determining that the corresponding electrical circuit is normal, if the difference is outside the difference range, determining that the corresponding electrical circuit is faulty; S324, sort out the faulty electrical circuit to obtain the cabinet fault.

[0018] In this scheme, in order to determine whether the corresponding relay protection panel cabinet is faulty based on the detection results, the working data of the relay protection panel cabinet when there is no fault is set as the test parameter in advance. At the same time, the test parameters in the same electrical circuit as the detection data are selected based on the test steps corresponding to the test result parameters. At this time, the change trends of the detection data and the test parameters are theoretically consistent. If they are inconsistent, it proves that the corresponding relay protection panel cabinet has a fault. When they are consistent, in order to analyze the faults that cannot be directly judged by the trend, such as too high or too low voltage, the test parameters are screened based on the detection action, detection action sequence, excitation type, and excitation value in the detection outline, so that the test parameters are matched with the detection data, and the test parameters are subtracted from the detection data to obtain the difference. At this time, if the corresponding relay protection panel cabinet has no fault, the difference will theoretically be within a certain range. If it exceeds the range, the corresponding relay protection panel cabinet has a fault. At the same time, based on the correspondence between the detection data and the electrical circuit, when the detection data indicates that the relay protection panel cabinet has a fault, the corresponding electrical circuit can be directly located through the detection data.

[0019] Preferably, in S322, before performing trend comparison analysis based on the test result parameters and the detection data, the method further includes: A test result curve graph is drawn based on the test result parameters to obtain the test result trend characteristics, and a detection data curve graph is drawn based on the detection data to obtain the detection trend characteristics.

[0020] Preferably, in S4, the specific process of arranging the detection outline, detection actions, and detection data to obtain the detection report based on the cabinet fault is as follows: Match the cabinet fault with the detection outline, detection action and detection data to obtain a summary data set, and mark the order of data in the summary data set based on the detection action sequence corresponding to the detection action; Generate a test report based on the order of data in the summarized dataset and the summarized dataset.

[0021] On the other hand, a technical solution also provided in an embodiment of the present invention is an automatic detection system for a relay protection panel cabinet, comprising: a modeling module, an outline module, a test module and a report module; The modeling module constructs a standard digital model based on the design parameters and standard criteria of the relay protection panel cabinet, and transmits the standard digital model to the outline module; The outline module generates a corresponding inspection outline based on the standard digital model uploaded by the modeling module, and uploads the inspection outline to the testing module; The test module drives the corresponding relay protection panel cabinet to perform corresponding detection actions for detection in response to the detection outline uploaded by the outline module, collects data during the detection process to obtain detection data, and transmits the detection data to the report module; The reporting module performs fault analysis based on the detection data uploaded by the testing module, and generates a detection report based on the result of the fault analysis.

[0022] Beneficial effects of the present invention: (1) This application establishes a digital model of the relay protection panel cabinet that can accurately describe the relay protection panel cabinet based on the design parameters of the relay protection panel cabinet, and verifies the digital model of the panel cabinet based on the specification criteria to obtain a standard digital model, which effectively solves the problem that the relay protection panel cabinet needs to be customized according to the power system structure when in use, resulting in different structures of different relay protection panel cabinets, and significantly improves the accuracy and rationality of the standard digital model; (2) This application determines the inspection items based on the line structure of the standard digital model, and constructs an inspection outline based on the inspection items and the standard digital model, clarifies the specific protection actions of the corresponding relay protection panel cabinet, and thus generates a corresponding inspection outline based on the protection actions to clarify the inspection items of the corresponding relay protection panel cabinet, effectively ensuring the comprehensiveness of the inspection items of the relay protection panel cabinet and the correctness of the inspection steps; (3) The present application obtains detection data by executing detection actions in response to the detection outline through the corresponding relay protection panel cabinet, and performs fault analysis based on the detection data to determine the panel cabinet fault, thereby significantly improving the comprehensiveness and accuracy of the relay protection panel cabinet detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. The drawings are only for the purpose of illustrating preferred embodiments and are not to be considered as limiting the present invention. Also, the same reference symbols are used throughout the drawings to represent the same parts.

[0024] Figure 1 A schematic diagram of a flow chart of an automatic detection method for a relay protection panel cabinet; Figure 2 The present invention is a structural schematic diagram of an automatic detection system for a relay protection panel cabinet. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation method described herein is only an optimal embodiment of the present invention, which is only used to explain the present invention and does not limit the scope of protection of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the operations (or steps) as sequential processes, many of the operations (or steps) therein can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the drawings; the process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0027] Embodiment 1: like Figure 1 As shown, this embodiment provides an automatic detection method for a relay protection cabinet, comprising the following steps: S1. Establish a digital model of the relay protection cabinet based on the design parameters of the cabinet; S111. Determine design parameters based on the design drawings corresponding to the relay protection cabinet, where the design parameters at least include the type of relay protection device, terminal configuration, and electrical signal type; S112. Determine the terminal position and electrical signal position based on the relay protection device connection technology and design specifications combined with design parameters; S113. Establish a digital model of the panel cabinet based on the terminal positions and electrical signal positions.

[0028] In this embodiment, it is necessary to obtain the design parameters of the relay protection panel cabinet from the design drawings corresponding to the relay protection panel cabinet, and the design parameters include the type of relay protection device, terminal configuration, electrical signal type, etc. Then, based on the visual modeling tool, the general interchangeable connection technology and design specifications of relay protection devices above 110kV and the design parameters, an XML file containing the panel cabinet terminal layout is generated. However, the panel cabinet digital model includes an XML file of the panel cabinet terminal layout, an XML file of the wiring inside the cabinet, and an XML file of the relay device. Among them, the XML file of the wiring inside the cabinet and the XML file of the relay device can directly use previous historical files, or they can be generated according to the generation method of the panel cabinet terminal layout XML file, and the terminals connected to the electrical signals in the panel cabinet terminal layout XML file are determined by the electrical signal positions.

[0029] Verify the panel cabinet digital model based on the specification criteria to obtain the specification digital model; S121, extracting the correspondence between the terminals and the electrical signals in the digital model of the panel cabinet to obtain the signal terminal structure, and extracting the correspondence between the terminals and the relay protection device in the digital model of the panel cabinet to obtain the device terminal structure; Simultaneously, based on the standard criteria, the standard correspondence between the terminal and the electrical signal is extracted to obtain the standard signal terminal structure, and based on the standard criteria, the standard correspondence between the terminal and the relay protection device is extracted to obtain the standard device terminal structure; S122, performing a matching comparison based on the signal terminal structure and the standard signal terminal structure, if the signal terminal structure is consistent with the standard signal terminal structure, it is determined that the comparison between the terminal and the electrical signal is successful, otherwise it is determined that the comparison between the terminal and the electrical signal fails; Synchronously, a matching comparison is performed based on the device terminal structure and the standard device terminal structure. If the device terminal structure is consistent with the standard device terminal structure, it is determined that the comparison between the terminal and the relay protection device is successful, otherwise it is determined that the comparison between the terminal and the relay protection device fails; S123. When the terminal is successfully compared with the electrical signal and the terminal is successfully compared with the relay protection device, the corresponding panel cabinet digital model is marked as the standard digital model.

[0030] In this embodiment, according to the target relay protection panel cabinet, that is, the structural setting specification criterion of the relay protection panel cabinet that needs to be detected is that the connection relationship and topological structure of the corresponding terminals in the structure are the same, the panel cabinet digital model can accurately represent the corresponding relay protection panel cabinet, and the connection relationship and topological structure are essentially the correspondence between the terminals, electrical signals, relay protection devices, etc. in the relay protection panel cabinet. Based on this, in order to ensure that the established panel cabinet digital model is consistent with the structure of the target relay protection panel cabinet and avoid detection errors caused by different structures, it is necessary to infer the signal terminal structure that represents the connection structure between the terminal and the electrical signal based on the correspondence between the terminal and the electrical signal, and to infer the device terminal structure that represents the connection structure between the terminal and the relay protection device based on the correspondence between the terminal and the relay protection device. Then, the signal terminal structure is structurally matched and compared with the standard signal terminal structure, and the device terminal structure is structurally matched and compared with the standard device terminal structure, and the panel cabinet digital model in which both comparisons are successful is marked as the standard digital model.

[0031] S2. Determine the inspection items based on the line structure of the standard digital model; S211, analyzing the standard digital model based on the digital model analysis criteria to obtain a circuit structure, wherein the circuit structure at least includes a schematic diagram, a loop logic diagram, and a wiring diagram; S212, determining the electrical circuit and circuit function of the standard digital model based on the schematic diagram, circuit logic diagram and wiring diagram; S213: Determine the inspection items based on the electrical circuit and circuit function in combination with the preset inspection target.

[0032] In this embodiment, the standard digital model is parsed based on the digital model parsing criteria to obtain the line structure, and the electrical signals, communication protocols, terminal positions and other information of the relay protection panel cabinet can also be obtained. Then, based on the line structure combined with the electrical signals, communication protocols, terminal positions and other information, the various electrical circuits and circuit functions contained in the standard digital model can be analyzed. The electrical circuits at least include AC circuits, open-in circuits, open-out circuits, operating circuits, and other circuits. Furthermore, the flow paths and path terminals of the corresponding electrical signals can be determined based on the electrical circuits and circuit functions, thereby determining the protection actions regarding the electrical signals. Based on the protection actions combined with the preset detection targets, the theoretical focus of the detection can be clarified, that is, the terminal set corresponding to the detection items. The terminal set can be integrated into a complete circuit; the detection items at least include power supply detection, constant value detection, open-in circuit detection, open-out circuit detection, operating circuit detection, AC circuit detection, whole group detection, and other detection items.

[0033] Construct inspection outline based on inspection items and standard digital models; S221, determining the detection steps based on the terminal attributes and the detection items in the standard digital model, and determining the electrical signal based on the wiring diagram corresponding to the detection item; S222, determining the excitation type and excitation value based on the type of the electrical signal, and arranging the detection steps, excitation types and excitation values ​​to obtain a detection outline; The detection step at least includes a detection action and a detection action sequence.

[0034] In this embodiment, when the relay protection panel cabinet is directly inspected, it can be carried out according to the protection action of the relay protection panel cabinet. However, the standard digital model is essentially a digital file, which cannot intuitively reflect the protection action of the corresponding relay protection panel cabinet. It is necessary to determine the inspection steps based on the terminal attributes and inspection items in the standard digital model, clarify the connection sequence of each terminal when performing the corresponding protection action, and determine the excitation type and excitation value based on the electrical signal corresponding to the inspection item to obtain the input excitation of the inspection process. The excitation includes voltage, current, etc., and then the connection sequence of the terminals is arranged to obtain the detection action sequence, and the switch states corresponding to the terminals and the connection sequence are arranged to obtain the detection action. Finally, the detection action sequence, detection action, excitation type and excitation value are arranged to obtain the detection outline.

[0035] S3, the corresponding relay protection panel cabinet performs corresponding detection actions based on the detection outline to obtain detection data; S311, extracting the excitation type, excitation value, detection action and detection action sequence in the detection outline, and adjusting the excitation source of the automatic detection system of the relay protection panel cabinet according to the excitation type and excitation value; S312. The automatic detection system of the relay protection panel cabinet that has completed the adjustment of the excitation source executes the detection action in response to the detection action sequence, and collects feedback data during the detection process to obtain detection data.

[0036] In this embodiment, before the formal detection is carried out, it is necessary to ensure that the corresponding relay protection panel cabinet meets the detection conditions. The detection conditions include non-adjustable constraints and adjustable constraints. The non-adjustable constraints include line damage, equipment damage, etc. The adjustable constraints include excitation sources, etc. Then, it is necessary to adjust the excitation source of the automatic detection system of the relay protection panel cabinet according to the excitation type and excitation value in the detection outline, and use it as the excitation source of the corresponding relay protection panel cabinet to drive the relay protection panel cabinet to perform the detection action for detection, and collect the detection data by reading feedback data and other means during the detection process; specifically, if AC detection or input detection is performed, the detection data can be collected by reading the feedback data of the IED device on the detected panel cabinet; if the output test is performed, the feedback data of the automatic detection system of the relay protection panel cabinet or other devices of the detected panel cabinet can be read as the detection data; if the operation loop detection is performed, it is necessary to connect the analog circuit breaker at the corresponding terminal position of the relay protection panel cabinet, and the detection data can be collected by reading the feedback data of the IED device and the analog circuit breaker on the detected panel cabinet; the detection action includes instrument adjustment, wiring switching, etc., and the instrument corresponds to the equipment used for detection in the automatic detection system of the relay protection panel cabinet.

[0037] Perform fault analysis based on detection data to determine the panel cabinet fault; S321, selecting a preset test result parameter set based on the test steps corresponding to the test data and the preset test steps, and screening the test result parameter set to obtain test result parameters based on the preset test parameters and the test outline corresponding to the test data; S322, performing trend comparison analysis based on the test result parameters and the detection data, if the change trend of the test result parameters is consistent with the change trend of the detection data, executing S323, if the change trend of the test result parameters is inconsistent with the change trend of the detection data, it is determined that the corresponding electrical circuit has a fault; Before the trend comparison analysis is performed in S322, the following steps are also included: Drawing a test result curve graph based on the test result parameters to obtain a test result trend feature, and drawing a test data curve graph based on the test data to obtain a test trend feature; S323, comparing the difference between the detection data and the test result parameter and a preset difference range, if the difference is within the difference range, determining that the corresponding electrical circuit is normal, if the difference is outside the difference range, determining that the corresponding electrical circuit is faulty; S324, sort out the faulty electrical circuit to obtain the cabinet fault.

[0038] In this embodiment, in order to determine whether the corresponding relay protection panel cabinet is faulty based on the detection results, the working data of the relay protection panel cabinet when there is no fault is set as the test parameter in advance. At the same time, the test parameters in the same electrical circuit as the detection data are selected based on the test steps corresponding to the test result parameters. At this time, the change trends of the detection data and the test parameters are theoretically consistent. If they are inconsistent, it proves that the corresponding relay protection panel cabinet has a fault. When they are consistent, in order to analyze the faults that cannot be directly judged by the trend, such as too high or too low voltage, the test parameters are screened based on the detection action, detection action sequence, excitation type, and excitation value in the detection outline, so that the test parameters correspond to the detection data, and the test parameters are subtracted from the detection data to obtain the difference. At this time, if the corresponding relay protection panel cabinet has no fault, the difference will theoretically be within a certain range. If it exceeds the range, the corresponding relay protection panel cabinet has a fault. At the same time, based on the correspondence between the detection data and the electrical circuit, when the detection data indicates that the relay protection panel cabinet has a fault, the corresponding electrical circuit can be directly located through the detection data.

[0039] S4. Based on the fault of the panel cabinet, the detection outline, detection actions and detection data are sorted out to obtain a detection report; Match the cabinet fault with the detection outline, detection action and detection data to obtain a summary data set, and mark the order of data in the summary data set based on the detection action sequence corresponding to the detection action; Generate a test report based on the order of data in the summarized dataset and the summarized dataset.

[0040] In this embodiment, the test report includes at least: a list of test items, a list of sub-items corresponding to the test items, test steps, test methods, i.e., the types and sizes of excitation sources, test data, the changing trend of test data during the test process, and fault analysis results.

[0041] On the other hand, Figure 2 As shown, a technical solution also provided in the embodiment of the present invention is an automatic detection system for a relay protection panel cabinet, comprising: a modeling module, an outline module, a test module and a report module; The modeling module constructs a standard digital model based on the design parameters and standard criteria of the relay protection panel cabinet, and transmits the standard digital model to the outline module; The outline module generates a corresponding inspection outline based on the standard digital model uploaded by the modeling module, and uploads the inspection outline to the testing module; The test module drives the corresponding relay protection panel cabinet to perform corresponding detection actions for detection in response to the detection outline uploaded by the outline module, collects data during the detection process to obtain detection data, and transmits the detection data to the report module; The reporting module performs fault analysis based on the detection data uploaded by the testing module, and generates a detection report based on the result of the fault analysis.

[0042] This embodiment has at least the following substantial effects: (1) This application establishes a digital model of the relay protection panel cabinet that can accurately describe the relay protection panel cabinet based on the design parameters of the relay protection panel cabinet, and verifies the digital model of the panel cabinet based on the specification criteria to obtain a standard digital model, which effectively solves the problem that the relay protection panel cabinet needs to be customized according to the power system structure when in use, resulting in different structures of different relay protection panel cabinets, and significantly improves the accuracy and rationality of the standard digital model; (2) This application determines the inspection items based on the line structure of the standard digital model, and constructs an inspection outline based on the inspection items and the standard digital model, clarifies the specific protection actions of the corresponding relay protection panel cabinet, and thus generates a corresponding inspection outline based on the protection actions to clarify the inspection items of the corresponding relay protection panel cabinet, effectively ensuring the comprehensiveness of the inspection items of the relay protection panel cabinet and the correctness of the inspection steps; (3) The present application obtains detection data by executing detection actions in response to the detection outline through the corresponding relay protection panel cabinet, and performs fault analysis based on the detection data to determine the panel cabinet fault, thereby significantly improving the comprehensiveness and accuracy of the relay protection panel cabinet detection.

[0043] The above specific embodiments are preferred embodiments of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the present specific embodiments. All equivalent changes made in accordance with the shape, structure, and method of the present invention are within the protection scope of the present invention.

Claims

1. A method for automatically detecting a relay protection panel cabinet, characterized in that: The method comprises the following steps: S1. Establish a digital model of the relay protection panel cabinet based on the design parameters of the panel cabinet, and verify the digital model of the panel cabinet based on the specification criteria to obtain a standard digital model; S2. Determine the inspection items based on the line structure of the standard digital model, and construct the inspection outline based on the inspection items and the standard digital model; S3, the corresponding relay protection panel cabinet performs corresponding detection actions based on the detection outline to obtain detection data, and performs fault analysis based on the detection data to determine the panel cabinet fault; S4. Based on the panel cabinet fault, the detection outline, detection actions, and detection data are organized to obtain a detection report.

2. The automatic detection method of a relay protection panel cabinet according to claim 1 is characterized in that: In S1, the specific process of establishing the digital model of the relay protection cabinet based on the design parameters of the relay protection cabinet is as follows: S111. Determine design parameters based on the design drawings corresponding to the relay protection cabinet, where the design parameters at least include the type of relay protection device, terminal configuration, and electrical signal type; S112. Determine the terminal position and electrical signal position based on the relay protection device connection technology and design specifications combined with design parameters; S113. Establish a digital model of the panel cabinet based on the terminal positions and electrical signal positions.

3. The automatic detection method of a relay protection cabinet according to claim 1 is characterized in that: In S1, the specific process of verifying the panel cabinet digital model based on the specification criteria to obtain the standard digital model is as follows: S121, extracting the correspondence between the terminals and the electrical signals in the digital model of the panel cabinet to obtain the signal terminal structure, and extracting the correspondence between the terminals and the relay protection device in the digital model of the panel cabinet to obtain the device terminal structure; Simultaneously, based on the standard criteria, the standard correspondence between the terminal and the electrical signal is extracted to obtain the standard signal terminal structure, and based on the standard criteria, the standard correspondence between the terminal and the relay protection device is extracted to obtain the standard device terminal structure; S122, performing a matching comparison based on the signal terminal structure and the standard signal terminal structure, if the signal terminal structure is consistent with the standard signal terminal structure, it is determined that the comparison between the terminal and the electrical signal is successful, otherwise it is determined that the comparison between the terminal and the electrical signal fails; Synchronously, a matching comparison is performed based on the device terminal structure and the standard device terminal structure. If the device terminal structure is consistent with the standard device terminal structure, it is determined that the comparison between the terminal and the relay protection device is successful, otherwise it is determined that the comparison between the terminal and the relay protection device fails; S123. When the terminal is successfully compared with the electrical signal and the terminal is successfully compared with the relay protection device, the corresponding panel cabinet digital model is marked as the standard digital model.

4. The automatic detection method of a relay protection cabinet according to claim 1 is characterized in that: In S2, the specific process of determining the inspection items based on the line structure of the standard digital model is as follows: S211, analyzing the standard digital model based on the digital model analysis criteria to obtain a circuit structure, wherein the circuit structure at least includes a schematic diagram, a loop logic diagram, and a wiring diagram; S212, determining the electrical circuit and circuit function of the standard digital model based on the schematic diagram, circuit logic diagram and wiring diagram; S213: Determine the inspection items based on the electrical circuit and circuit function in combination with the preset inspection target.

5. The automatic detection method of a relay protection panel cabinet according to claim 1 is characterized in that: In S2, the specific process of constructing the inspection outline based on the inspection items and the standard digital model is as follows: S221, determining the detection steps based on the terminal attributes and the detection items in the standard digital model, and determining the electrical signal based on the wiring diagram corresponding to the detection item; S222, determining the excitation type and excitation value based on the type of the electrical signal, and arranging the detection steps, excitation types and excitation values ​​to obtain a detection outline; The detection step at least includes a detection action and a detection action sequence.

6. The automatic detection method of a relay protection panel cabinet according to claim 1 is characterized in that: In S3, the specific process of the corresponding relay protection panel cabinet performing the corresponding detection action based on the detection outline to obtain the detection data is as follows: S311, extracting the excitation type, excitation value, detection action and detection action sequence in the detection outline, and adjusting the excitation source of the automatic detection system of the relay protection panel cabinet according to the excitation type and excitation value; S312. The automatic detection system of the relay protection panel cabinet that has completed the adjustment of the excitation source executes the detection action in response to the detection action sequence, and collects feedback data during the detection process to obtain detection data.

7. The automatic detection method of a relay protection panel cabinet according to claim 1 is characterized in that: In S3, the specific process of performing fault analysis based on the detection data to determine the fault of the panel cabinet is as follows: S321, selecting a preset test result parameter set based on the test steps corresponding to the test data and the preset test steps, and screening the test result parameter set to obtain test result parameters based on the preset test parameters and the test outline corresponding to the test data; S322, performing trend comparison analysis based on the test result parameters and the detection data, if the change trend of the test result parameters is consistent with the change trend of the detection data, executing S323, if the change trend of the test result parameters is inconsistent with the change trend of the detection data, it is determined that the corresponding electrical circuit has a fault; S323, comparing the difference between the detection data and the test result parameter and a preset difference range, if the difference is within the difference range, determining that the corresponding electrical circuit is normal, if the difference is outside the difference range, determining that the corresponding electrical circuit is faulty; S324, sort out the faulty electrical circuit to obtain the cabinet fault.

8. The automatic detection method of a relay protection panel cabinet according to claim 7 is characterized in that: In S322, before performing trend comparison analysis based on the test result parameters and the detection data, the following steps are also included: A test result curve graph is drawn based on the test result parameters to obtain the test result trend characteristics, and a detection data curve graph is drawn based on the detection data to obtain the detection trend characteristics.

9. The automatic detection method of a relay protection panel cabinet according to claim 1 is characterized in that: In S4, the specific process of arranging the detection outline, detection actions, and detection data to obtain the detection report based on the cabinet fault is as follows: Match the cabinet fault with the detection outline, detection action and detection data to obtain a summary data set, and mark the order of data in the summary data set based on the detection action sequence corresponding to the detection action; Generate a test report based on the order of data in the summarized dataset and the summarized dataset.

10. An automatic detection system for a relay protection panel cabinet, applicable to an automatic detection method for a relay protection panel cabinet as claimed in any one of claims 1 to 9, characterized in that: Includes: modeling module, outline module, test module and report module; The modeling module constructs a standard digital model based on the design parameters and standard criteria of the relay protection panel cabinet, and transmits the standard digital model to the outline module; The outline module generates a corresponding inspection outline based on the standard digital model uploaded by the modeling module, and uploads the inspection outline to the testing module; The test module drives the corresponding relay protection panel cabinet to perform corresponding detection actions for detection in response to the detection outline uploaded by the outline module, collects data during the detection process to obtain detection data, and transmits the detection data to the report module; The reporting module performs fault analysis based on the detection data uploaded by the testing module, and generates a detection report based on the result of the fault analysis.

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