Fault detection method, device, medium, equipment and three-phase grounding knife-switch fault detection system

Abstract

The invention discloses a fault detection method and device, a medium, equipment and a three-phase grounding knife-switch fault detection system. Comprising the following steps: in response to a fault detection instruction of a grounding switch, controlling the grounding switch to execute a target action so as to drive a coaxial tag pointer to move on an RFID tag array through a moving contact of the grounding switch; determining a serial number of a target RFID tag indicated by a tag pointer in an RFID tag array through tag features read by an RFID detector in response to the fact that the execution duration of the target action is greater than or equal to the reference duration when a moving contact of the grounding switch reaches a specified position; and outputting fault detection information of the grounding switch based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array. Therefore, the fault type can be accurately positioned without physical contact, clamping stagnation and loosening of the grounding switch can be indirectly detected in a narrow grounding switch chamber at low cost, and safe operation of the grounding switch can be better guaranteed.

Description

Technical Field

[0001] This application relates to the field of fault detection technology, and in particular to a fault detection method, device, medium, equipment and a three-phase grounding switch fault detection system. Background Technology

[0002] Currently, high-voltage switchgear plays a crucial role in power systems, serving as an indispensable key piece of equipment in power generation, transmission, transformation, and distribution. During maintenance and repair after a power outage, grounding safety measures are necessary to ensure the safety of personnel. This is typically achieved through the opening and closing of a grounding switch to prevent injury from sudden power restoration. However, some monitoring systems cannot effectively identify faults in real time through data-driven decision-making. Consequently, they cannot monitor and analyze various fault phenomena and their causes occurring during the operation of the high-voltage switchgear's grounding switch, thus reducing the safety and stability of production equipment. Summary of the Invention

[0003] In view of this, this application provides a fault detection method, apparatus, medium, equipment, and three-phase grounding switch fault detection system to solve the problems mentioned in the background art.

[0004] According to the first aspect of this application, a fault detection method for a grounding switch is provided, comprising: In response to a fault detection command from the grounding switch, the grounding switch is controlled to perform a target action, thereby driving a coaxial tag pointer to move on an RFID tag array via the moving contact of the grounding switch. The RFID tag array includes multiple RFID tags arranged along the movement direction of the moving contact of the grounding switch, and each RFID tag has a unique tag feature. In response to a target action whose execution time is greater than or equal to a reference time when the moving contact of the grounding knife reaches a designated position, the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array is determined by the tag features read by the RFID detector. Based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array, the fault detection information of the grounding switch is output, wherein the reference RFID tag is the RFID tag indicated by the tag pointer when the moving contact reaches the designated position under normal conditions.

[0005] Optionally, the RFID detector is disposed within the vertical space of the RFID tag array and the tag pointer, and the tag pointer is provided with a radio frequency blocking plate for blocking RFID signals; determining the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array based on the tag features read by the RFID detector includes: The RFID detector reads the first tag feature queue of the RFID tag array after the target RFID tag is blocked by the radio frequency blocking patch; By comparing the first tag feature queue with the tag feature queue of the RFID tag array, the differential tag features in the tag feature queue of the RFID tag array that are different from those in the first tag feature queue are determined. The serial number of the RFID tag corresponding to the difference tag feature in the RFID tag array is used as the serial number of the target RFID tag.

[0006] Optionally, the RFID detector is disposed within the vertical space of the RFID tag array and the tag pointer, the tag pointer being provided with an identification tag and an RFID blocking sheet, the RFID blocking sheet being located between the identification tag and the RFID tag array; determining the sequence number of the target RFID tag indicated by the tag pointer in the RFID tag array based on the tag features read by the RFID detector includes: The RFID detector reads the third tag feature queue of the RFID tag array and the identification tag after the radio frequency blocking patch blocks the target RFID tag; Determine the neighboring label features in the third label feature queue that are adjacent to the preset label features of the identifier label; The serial number of the target RFID tag is determined based on the serial number of the RFID tag corresponding to the neighborhood tag feature in the RFID tag array.

[0007] Optionally, the RFID detector is disposed on the tag pointer, and the determination of the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array by reading the tag features through the RFID detector includes: The RFID detector reads the tag features of the target RFID tag; The tag features of the target RFID tag are matched with the tag feature queue of the RFID tag array to determine the serial number of the target RFID tag in the RFID tag array.

[0008] Optionally, the step of outputting fault detection information of the grounding switch based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array includes: If the serial number of the target RFID tag is greater than the first serial number, then the fault detection information that the grounding switch is loose is displayed; If the serial number of the target RFID tag is less than the second serial number, then the fault detection information that the grounding switch is stuck is displayed; If the serial number of the target RFID tag is less than or equal to the first serial number and greater than or equal to the second serial number, then the fault detection information that the grounding switch is normal is displayed. The first serial number and the second serial number are determined based on the serial number of the reference RFID tag in the RFID tag array, and the first serial number is greater than the second serial number.

[0009] Optionally, the fault detection method for the grounding switch further includes: Control the grounding switch to perform the target action under normal conditions; During the execution of the target action by the grounding switch under normal conditions, in response to the first acquisition of the tag features of the target RFID tag by the RFID detector or a change in the acquired tag features of the target RFID tag, the location of the moving contact of the grounding switch is positioned as a test point, and the reference time for the moving contact of the grounding switch to move to the test point is calculated based on the start time of the grounding switch executing the target action and the current time. The tag features of the target RFID tag are associated with the test location and the reference duration, respectively; In response to the fault detection command of the grounding switch, at least one of the test points is randomly selected as the designated location.

[0010] According to a second aspect of this application, a fault detection device for a grounding switch is provided, comprising: The control module is used to respond to the fault detection command of the grounding switch and control the grounding switch to perform the target action, so as to drive the coaxial tag pointer to move on the RFID tag array through the moving contact of the grounding switch. The RFID tag array includes multiple RFID tags arranged along the movement direction of the moving contact of the grounding switch, and each RFID tag has a unique tag feature. The positioning module is used to determine the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array in response to the execution time of the target action being greater than or equal to the reference time for the moving contact of the grounding knife to reach the specified position, by using the tag features read by the RFID detector. The fault detection module is used to output fault detection information of the grounding knife based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array, wherein the reference RFID tag is the RFID tag indicated by the tag pointer when the moving contact reaches the designated position under normal conditions.

[0011] Optionally, the RFID detector is disposed within the vertical space of the RFID tag array and the tag pointer, and the tag pointer is provided with a radio frequency blocking plate, which is used to block RFID signals; the positioning module is specifically used to read the first tag feature queue of the RFID tag array after the radio frequency blocking plate blocks the target RFID tag by means of the RFID detector; compare the first tag feature queue with the tag feature queue of the RFID tag array to determine the differential tag features in the tag feature queue of the RFID tag array that are different from the first tag feature queue; and take the serial number of the RFID tag corresponding to the differential tag feature in the RFID tag array as the serial number of the target RFID tag.

[0012] Optionally, the RFID detector is disposed within the vertical space of the RFID tag array and the tag pointer, the tag pointer being provided with an identification tag and an RFID blocking sheet, the RFID blocking sheet being located between the identification tag and the RFID tag array; the positioning module is specifically used to read the third tag feature queue of the RFID tag array and the identification tag after the RFID blocking sheet blocks the target RFID tag through the RFID detector; determine the neighboring tag features adjacent to the preset tag features of the identification tag in the third tag feature queue; and determine the sequence number of the target RFID tag based on the sequence number of the RFID tag corresponding to the neighboring tag features in the RFID tag array.

[0013] Optionally, the RFID detector is disposed on the tag pointer, and the positioning module is specifically used to read the tag features of the target RFID tag through the RFID detector; match the tag features of the target RFID tag with the tag feature queue of the RFID tag array, and determine the serial number of the target RFID tag in the RFID tag array.

[0014] Optionally, the fault detection module is specifically configured to display fault detection information indicating that the grounding switch is loose if the serial number of the target RFID tag is greater than a first serial number; display fault detection information indicating that the grounding switch is stuck if the serial number of the target RFID tag is less than a second serial number; and display fault detection information indicating that the grounding switch is normal if the serial number of the target RFID tag is less than or equal to the first serial number and greater than or equal to the second serial number. The first serial number and the second serial number are determined based on the serial number of the reference RFID tag in the RFID tag array, and the first serial number is greater than the second serial number.

[0015] Optionally, the control module is further configured to control the grounding switch to perform the target action under normal conditions; The positioning module is also used to locate the position of the moving contact of the grounding knife as a test point in response to the first acquisition of the tag features of the target RFID tag by the RFID detector or a change in the acquired tag features of the target RFID tag during the execution of the target action by the grounding knife under normal conditions. The fault detection device for the grounding switch also includes: The timing module is used to calculate the reference time for the moving contact of the grounding switch to move to the test point based on the start time of the grounding switch performing the target action and the current time. The association module is used to associate the tag features of the target RFID tag with the test point and the reference duration, respectively. The configuration module is used to randomly select at least one of the test points as the specified location in response to the fault detection command of the grounding switch.

[0016] According to a third aspect of this application, a readable storage medium is provided on which a program or instructions are stored, which, when executed by a processor, implement the steps of the above-described fault detection method for the grounding switch.

[0017] According to a fourth aspect of this application, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the above-described fault detection method for the grounding switch.

[0018] According to the fifth aspect of this application, a three-phase grounding switch fault detection system is provided, comprising: Three-phase grounding switch; Three sets of RFID tag arrays are respectively set in parallel and insulated from the stationary contacts of phases A, B and C of the three-phase grounding switch. Each RFID tag array includes multiple RFID tags arranged along the movement direction of the moving contact of the grounding switch. Each RFID tag has a unique tag feature. Three tag pointers are coaxially arranged with the moving contacts of each phase of the three-phase grounding switch A, B, and C, and correspond to the RFID tag array. RFID detectors are used to read the tag features of RFID tags; The computer device that enables the above-described fault detection method for the grounding switch is electrically connected to the RFID detector and the three-phase grounding switch.

[0019] Using the above technical solution, each RFID tag in the RFID tag array has a unique tag feature and is arranged according to the direction of movement of the moving contact. Since the moving contact of the grounding switch and the tag pointer are coaxial, the tag pointer moves synchronously with the moving contact. By reading the tag features through the RFID detector, the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array can be located. By comparing the serial numbers, the difference between the current actual position of the moving contact and the reference position of the moving contact under normal conditions can be determined. This difference can be used to analyze whether the grounding switch has malfunctioned. On the one hand, the fault type can be accurately located without physical contact, avoiding the complexity and fragility of traditional detection methods that rely on mechanical or electrical sensors. It allows for indirect detection of grounding switch jamming and loosening in a confined grounding switch chamber at a lower cost, better ensuring the safe operation of the grounding switch. On the other hand, RFID uses radio frequency identification, and the communication between the detector and the tag is not affected by electromagnetic interference, ensuring the stability of tag feature reading and thus improving the accuracy of fault detection.

[0020] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A flowchart illustrating the fault detection method for a grounding switch provided in an embodiment of this application is shown. Figure 2 This shows one of the structural block diagrams of the grounding switch fault detection device provided in an embodiment of this application; Figure 3 This shows a second structural block diagram of the grounding switch fault detection device provided in an embodiment of this application; Figure 4 A schematic diagram of the electronic structure of a computer device provided in an embodiment of this application is shown; Figure 5 A schematic diagram of the structure of the three-phase grounding switch fault detection system provided in an embodiment of this application is shown. Detailed Implementation

[0022] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present application can be combined with each other.

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0024] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “attached” to another element, it can be directly connected or attached to the other element, or there may be intermediate elements. Furthermore, “connected” or “attached” as used herein can include wireless connections or wireless interconnections. The term “and / or” as used herein includes all or any unit and all combinations of one or more associated listed items.

[0025] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0026] This embodiment provides a method for detecting faults in a grounding switch, such as... Figure 1 As shown, the method includes: Step 101: In response to the fault detection command of the grounding switch, control the grounding switch to perform the target action.

[0027] The RFID tag array consists of multiple RFID tags arranged along the direction of movement of the moving contact of the grounding knife, and each RFID tag has a unique tag feature.

[0028] Specifically, the target action includes the closing or opening action of the grounding switch.

[0029] It should be noted that, as Figure 5As shown, the RFID tag array 311 consists of one RFID tag array in each prefabricated grid, installed parallel and insulated from the stationary contact of the grounding switch in the high-voltage switchgear, for indirectly detecting the relative position of the moving contact and the stationary contact of the grounding switch. The tag pointer 321 is paired with the RFID tag array 311 and is coaxially, parallel, and insulated from the moving contact of the grounding switch in the high-voltage switchgear, without interfering with each other. This eliminates the need for additional complex transmission mechanisms, does not alter the original equipment's main mechanical structure and electrical performance, and offers convenient installation and high reliability.

[0030] Step 102: In response to the target action's execution time being greater than or equal to the reference time for the moving contact of the grounding switch to reach the designated position, the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array is determined by the tag features read by the RFID detector.

[0031] The designated location can be the endpoint of opening or closing the circuit breaker, or any test point during the operation. The RFID detector is used to read the tag features of RFID tags. The RFID detector can be placed within the vertical space of the RFID tag array and tag pointer, or it can be placed on the tag pointer itself.

[0032] In this embodiment, when the system receives a grounding switch fault detection command, the control unit drives the grounding switch's operating mechanism to perform a standard closing or opening action. During this process, the tag pointer, mechanically coaxially fixed with the moving contact of the grounding switch, moves synchronously and scans the RFID tag array along its path. When the duration of the grounding switch's target action is greater than or equal to a reference duration, it indicates that the moving contact has moved to a preset designated position. At this point, the tag pointer is precisely aligned with a specific RFID tag (target RFID tag), and the control unit triggers the RFID detector to perform a reading operation. By using the tag features read by the RFID detector, the relative position of the tag pointer and the RFID tag array is locked, thereby pinpointing the precise physical position of the moving contact on its movement path.

[0033] In practical applications, different methods can be used to determine the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array, depending on the different settings of the RFID detector.

[0034] Method 1: The RFID detector is positioned within the vertical space of the RFID tag array and the tag pointer. The tag pointer is equipped with a radio frequency blocking plate to block RFID signals. The tag pointer and the radio frequency blocking plate are close to the RFID tag array so that after the tag pointer slides across the array, the radio frequency blocking plate can successfully block the RFID signal of the RFID tag corresponding to the position of the tag pointer. Step 102 specifically includes: The first tag feature queue of the RFID tag array after the target RFID tag is blocked by the radio frequency blocking patch is read by the RFID detector; the first tag feature queue and the tag feature queue of the RFID tag array are compared to determine the difference tag features in the tag feature queue of the RFID tag array that are different from the first tag feature queue; the serial number of the RFID tag corresponding to the difference tag feature in the RFID tag array is used as the serial number of the target RFID tag.

[0035] It should be noted that the width of the radio frequency blocking patch should be greater than or equal to the visibility of the RFID tag, so that the blocking patch can completely cover an RFID tag.

[0036] In this embodiment, when the RF blocking plate moves in front of the target RFID tag along with the tag pointer, it blocks communication between the tag and the RFID detector. This allows the RFID detector to directly acquire a first tag feature queue composed of the features of all unblocked RFID tags in the RFID tag array. The difference between the first tag feature queue and the complete tag feature queue, i.e., the blocked tag, is then identified. The sequence number of this differing tag in the array is used as the sequence number of the target RFID tag, which is the position pointed to by the pointer. This not only effectively avoids the influence of signal interference and other factors on the identification results, improving the reliability and stability of target positioning, but also simplifies the mechanical structure and reduces hardware costs.

[0037] Method 2: The RFID detector is installed within the vertical space of the RFID tag array and the tag pointer. The tag pointer is equipped with an identification tag and an RFID blocking plate, with the RFID blocking plate located between the identification tag and the RFID tag array. Step 102 specifically includes: The RFID detector reads the third tag feature queue of the RFID tag array and the identification tag after the target RFID tag is blocked by the radio frequency blocking patch; determines the neighboring tag features adjacent to the preset tag features of the identification tag in the third tag feature queue; and determines the sequence number of the target RFID tag based on the sequence number of the RFID tag corresponding to the neighboring tag features in the RFID tag array.

[0038] The identification tag is an RFID tag whose preset tag characteristics are known.

[0039] In this embodiment, due to the obstruction of the radio frequency blocking sheet, the third tag feature queue read by the RFID detector includes all currently readable, unobstructed tag features as well as the preset tag features of the identifying tag. Then, in the third tag feature queue, neighboring tag features adjacent to the preset tag features of the identifying tag are found. By detecting which tag in the array is adjacent to the identifying tag, the serial number of the target RFID tag indicated by the top pointer can be determined. This narrows the feature comparison range from the entire tag array to a local area around the identifying tag, significantly reducing the computational load and data processing time for feature matching, making the determination of the target tag serial number more efficient, especially when the tag array is large. Furthermore, it effectively avoids interference signals generated by non-target tags, further improving the accuracy of feature recognition and serial number matching.

[0040] Method 3: The RFID detector is set on the tag pointer. Step 102 specifically includes: The tag features of the target RFID tag are read by an RFID detector; the tag features of the target RFID tag are matched with the tag feature queue of the RFID tag array to determine the serial number of the target RFID tag in the RFID tag array.

[0041] In this embodiment, the unique tag information of the target RFID tag is compared with the complete set of tag information of the RFID tag array pre-stored in the database. By querying the order of the tag in the queue, its serial number can be accurately determined. This allows for direct reading and matching based on the characteristics of the target RFID tag, reducing intermediate data processing steps and minimizing errors in signal transmission and feature conversion. In scenarios with a moderate tag array size, stable positioning accuracy is guaranteed.

[0042] Step 103: Based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array, output the fault detection information of the grounding switch.

[0043] Among them, the reference RFID tag is the RFID tag indicated by the tag pointer when the moving contact reaches the designated position under normal conditions.

[0044] In this embodiment, the system compares the serial number of the target RFID tag with the serial number of a known, normally functioning reference RFID tag. Based on whether the two are identical, or whether the deviation is within the allowable tolerance range, the system performs a logical judgment and ultimately outputs grounding switch fault detection information. This enables the detection of potential mechanical faults through simple location detection, providing early warnings and ensuring the safety of operators and equipment, while significantly reducing maintenance costs and power outage time.

[0045] In practical applications, step 103, which involves outputting the fault detection information of the grounding switch based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array, specifically includes the following steps: Step 103-1: If the serial number of the target RFID tag is greater than the first serial number, then display the fault detection information that the grounding switch is loose.

[0046] Step 103-2: If the serial number of the target RFID tag is less than the second serial number, then display the fault detection information that the grounding switch is stuck.

[0047] Step 103-3: If the serial number of the target RFID tag is less than or equal to the first serial number and greater than or equal to the second serial number, then display the fault detection information that the grounding switch is normal.

[0048] The first and second serial numbers are determined based on the serial numbers of the reference RFID tag in the RFID tag array, with the first serial number being greater than the second serial number.

[0049] In this embodiment, a normal range window is set centered on a reference position, namely [second sequence number, first sequence number]. During each fault detection, the real-time sequence number is compared with the preset first and second sequence numbers. If the sequence number is too large, it indicates wear, loosening, or deformation of the mechanical connection components, causing the moving contact to "overshoot" the normal stop point; in this case, a loosening fault message is output. If the sequence number is too small, it indicates excessive resistance, poor lubrication, or foreign object jamming in the operating mechanism or transmission path, causing the moving contact to "not reach" the normal stop point; in this case, a jamming fault message is output. If the sequence number of the target RFID tag is between the two thresholds, the grounding switch is determined to be normal. Therefore, utilizing the sequence number thresholds allows for rapid and intelligent feedback of the grounding switch status, improving the accuracy and response speed of fault diagnosis, thereby enhancing the safety and reliability of equipment operation, reducing maintenance costs, and improving operational efficiency.

[0050] In one embodiment, prior to step 103, the grounding switch fault detection method further includes: controlling the grounding switch in a normal state to perform a target action; during the execution of the target action by the grounding switch in a normal state, in response to the first acquisition of the tag features of the target RFID tag by the RFID detector or a change in the acquired tag features of the target RFID tag, locating the position of the moving contact of the grounding switch as a test point, and calculating the reference time for the moving contact of the grounding switch to move to the test point based on the start time of the grounding switch performing the target action and the current time; associating the tag features of the target RFID tag with the test point and the reference time respectively; and in response to the fault detection command of the grounding switch, randomly selecting at least one test point as a designated position.

[0051] It is understandable that the method of obtaining the tag characteristics of the target RFID tag through the RFID detector depends on the setting of the RFID detector.

[0052] In this embodiment, during the closing or opening operation of the grounding switch under normal conditions, when any RFID tag is read for the first time, or when the tag characteristics change during the movement of the moving contact (i.e., the RFID detector moves from the sensing area of ​​one RFID tag to the sensing area of ​​another), the physical position of the moving contact at that moment is recorded as a test point, ensuring that each test point can only receive the signal of one RFID tag. Simultaneously, based on the start time of the grounding switch's target action and the current time, the reference time required for the moving contact to move to the test point is calculated. By associating the corresponding tag characteristics with the reference position and reference time, precise correspondence and real-time tracking of the moving contact position with the unique identifier are achieved. Thus, a continuous mechanical movement is transformed into a series of "time-space" sequence points with position tags. This ensures the reliability of the sequence number assigned to each test point after setting a specified position through the test points, providing clear, reliable, and actionable data for fault diagnosis of the grounding switch.

[0053] Furthermore, if the same point is always checked (such as the closing point), the system will be unable to complete the detection or will consistently produce incorrect results if the RFID tag corresponding to that point is damaged or blocked. Randomly selecting detection points makes it impossible for attackers or potential systemic faults to predict where the detection will occur, thus preventing targeted evasion or deception and greatly enhancing the system's robustness. Moreover, random detection forces the system to move through various parts of the entire path, thereby exposing potential problems in the middle of a route. This enhances the flexibility and coverage of the detection process, effectively avoiding blind spots or detection dead zones that may exist at a single fixed location, improving the comprehensiveness and reliability of fault diagnosis, and ultimately ensuring the safety of equipment operation and the accuracy of maintenance work.

[0054] For specific examples, such as Figure 5 As shown, the device for detecting mechanical faults in a single-phase grounding switch includes: an RFID tag array 311, a tag pointer 321, a host computer (computer equipment 400), and an RFID detector (not shown in the figure).

[0055] The RFID tag array 311 consists of an array of RFID tags in each prefabricated grid. It is installed parallel and insulated from the stationary contact of the grounding switch in the high-voltage switchgear and is used to indirectly detect the relative position of the moving contact and the stationary contact of the grounding switch.

[0056] The tag pointer 321 and the RFID tag array 311 are configured in pairs. The tag pointer 321 is coaxially, parallelly and insulatedly installed with the moving contact head of the grounding knife in the high-voltage switch cabinet, and they do not interfere with each other. The head of the tag pointer 321 is divided into upper and lower layers. An identification tag 323 is installed on the upper layer, and a radio frequency shielding sheet 322 is installed on the lower layer.

[0057] The RFID detector is provided with a first input end for receiving a start signal and a second input end for receiving the signal of the RFID tag array. The RFID detector is statically installed in the vertical space between the RFID tag array 311 and the tag pointer 321, or is connected to the tag pointer 321. The RFID detector is used to collect all RFID tag signals to obtain tag features.

[0058] The upper computer is used to judge whether the grounding knife of this phase is in a stuck, loose or normal mechanical state. The specific method includes: Obtain the tag feature queue {RFID1, RFID2, RFID3, RFID4, RFID5, RFID6,..., RFIDi,..., RFIDn} of the RFID tag array; Generate serial numbers for the RFID tag array to obtain {1, 2, 3, 4, 5, 6,..., i,..., n}, where the serial number i is any integer not between 1 and n.

[0059] According to the detection start signal (fault detection instruction), control the grounding knife to close. At this time, the position where the static contact is located is set as the specified position. When the system control system feedbacks that the grounding knife has been closed, read the tag features of the identification tag through the RFID detector, and search column by column from left to right in the tag sorting queue of the RFID tag array to determine the relative serial number Tci, and perform the following: If the serial number i does not contain tag features, continue to search; If the serial number i contains tag features, output Tci and stop the column search for the tag sorting queue Tc. That is, if the serial number i corresponding to the tag features of the identification tag is found, the position where the tag pointer stays in the RFID tag array is found. After the search operation, the preset feature serial number i = 一百 of the tag pointer is in the 7th column in the tag sorting queue Tc, and it can be obtained that Tci = 7, that is, the position where the tag pointer stays in the RFID tag array is found.

[0060] According to the relative serial number Tci, make the following comparison: 1) If Tci > LS, it indicates that the grounding knife is loose; 2) If LS ≥ Tci ≥ LK, it indicates that the grounding knife is normal; 3) If Tci < LK, it indicates that the grounding knife is stuck; Where LK is the preset value for stuck, and LS is the preset value for loose.

[0061] Table 1 lists three embodiments of phase A in the three-phase detection module provided in this application. It can be seen that: 1) Example 1: After operating the module and method provided in this application, the relative sequence number Tci is obtained by searching, and after further judgment, the conclusion is that the condition is stuck. 2) Example 2: After operating the modules and methods provided in this application, the relative sequence number Tci is obtained by searching, and after further judgment, the conclusion is that it is a normal working condition; 3) In Example 3, after operating the modules and methods provided in the embodiments of this application, the relative sequence number Tci is obtained by searching, and after further judgment, the conclusion is that the working condition is loose.

[0062] Table 1

[0063] It should be noted that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0064] Furthermore, such as Figure 2 As shown, as a specific implementation of the above-mentioned grounding switch fault detection method, this application embodiment provides a grounding switch fault detection device 200, which includes: a control module 201, a positioning module 202 and a fault detection module 203.

[0065] The control module 201 is used to respond to the fault detection command of the grounding switch and control the grounding switch to perform the target action, so as to drive the coaxial tag pointer to move on the RFID tag array through the moving contact of the grounding switch. The RFID tag array includes multiple RFID tags arranged along the movement direction of the moving contact of the grounding switch, and each RFID tag has a unique tag feature. The positioning module 202 is used to determine the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array in response to the execution time of the target action being greater than or equal to the reference time for the moving contact of the grounding knife to reach the specified position, by reading the tag features by the RFID detector. The fault detection module 203 is used to output fault detection information of the grounding knife based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array. The reference RFID tag is the RFID tag indicated by the tag pointer when the moving contact reaches the specified position under normal conditions.

[0066] Furthermore, the RFID detector is set within the vertical space of the RFID tag array and the tag pointer. The tag pointer is equipped with a radio frequency blocking plate, which is used to block RFID signals. The positioning module 202 is specifically used to read the first tag feature queue of the RFID tag array after the radio frequency blocking plate blocks the target RFID tag through the RFID detector; compare the first tag feature queue with the tag feature queue of the RFID tag array to determine the difference tag features in the tag feature queue of the RFID tag array that are different from those in the first tag feature queue; and use the serial number of the RFID tag corresponding to the difference tag feature in the RFID tag array as the serial number of the target RFID tag.

[0067] Furthermore, the RFID detector is set within the vertical space of the RFID tag array and the tag pointer. The tag pointer is equipped with an identification tag and an RFID blocking plate, with the RFID blocking plate located between the identification tag and the RFID tag array. The positioning module 202 is specifically used to read the third tag feature queue of the RFID tag array and the identification tag after the RFID blocking plate blocks the target RFID tag through the RFID detector; determine the neighboring tag features adjacent to the preset tag features of the identification tag in the third tag feature queue; and determine the sequence number of the target RFID tag based on the sequence number of the RFID tag corresponding to the neighboring tag features in the RFID tag array.

[0068] Furthermore, the RFID detector is set on the tag pointer; the positioning module 202 is specifically used to read the tag features of the target RFID tag through the RFID detector; and to match the tag features of the target RFID tag with the tag feature queue of the RFID tag array to determine the serial number of the target RFID tag in the RFID tag array.

[0069] Furthermore, the fault detection module 203 is specifically used to display fault detection information that the grounding switch is loose if the serial number of the target RFID tag is greater than the first serial number; to display fault detection information that the grounding switch is stuck if the serial number of the target RFID tag is less than or equal to the second serial number; and to display fault detection information that the grounding switch is normal if the serial number of the target RFID tag is less than or equal to the first serial number and greater than or equal to the second serial number. The first serial number and the second serial number are determined based on the serial number of the reference RFID tag in the RFID tag array, and the first serial number is greater than the second serial number.

[0070] Furthermore, the control module 201 is also used to control the grounding switch to perform target actions under normal conditions; The positioning module 202 is also used to locate the position of the moving contact of the grounding knife as a test point in response to the first acquisition of the tag features of the target RFID tag by the RFID detector or the change of the acquired tag features of the target RFID tag during the execution of the target action of the grounding knife under normal conditions. like Figure 3 As shown, the fault detection device 200 for the grounding switch also includes: The timing module 204 calculates the reference time for the moving contact of the grounding switch to move to the test point based on the start time of the grounding switch performing the target action and the current time. The association module 205 is used to associate the tag features of the target RFID tag with the test point and the reference duration, respectively.

[0071] The configuration module 206 is used to randomly select at least one test point as the specified location in response to the fault detection command of the grounding switch.

[0072] Specific limitations regarding the fault detection device for grounding switches can be found in the above description of the fault detection method for grounding switches, and will not be repeated here. Each module in the aforementioned fault detection device for grounding switches can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0073] Based on the above, Figure 1 Accordingly, embodiments of this application also provide a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described method. Figure 1 The method for detecting faults in the grounding switch is shown.

[0074] Based on this understanding, the technical solution of this application can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or portable hard drive), and includes several instructions to cause a computer device (such as a personal computer, server, or network device) to execute the methods described in the various implementation scenarios of this application.

[0075] Based on the above, Figure 1 The method shown, and Figure 2 The virtual device embodiment shown is designed to achieve the above objectives, such as... Figure 4 As shown in the figure, this application embodiment also provides a computer device 400, which includes a processor 401 and a memory 402. The memory 402 stores a program or instructions that can run on the processor 401. When the program or instructions are executed by the processor 401, they implement the above-mentioned... Figure 1 The method for detecting faults in the grounding switch is shown.

[0076] The memory 402 can be used to store software programs and various data. The memory 402 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 402 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 402 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0077] Processor 401 may include one or more processing units; optionally, processor 401 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 401.

[0078] Computer equipment can specifically include personal computers, servers, network devices, etc.

[0079] Optionally, the computer device may also include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, input units such as a keyboard, etc., and optional user interfaces may also include USB ports, card reader ports, etc. The network interface may optionally include standard wired interfaces, wireless interfaces (such as Bluetooth interfaces, Wi-Fi interfaces), etc.

[0080] Those skilled in the art will understand that the computer device structure provided in this embodiment does not constitute a limitation on the computer device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[0081] like Figure 5 As shown in the figure, this application embodiment also provides a three-phase grounding switch fault detection system, including: a three-phase grounding switch (not shown in the figure), three sets of RFID tag arrays 311, three tag pointers 321 RFID detectors (not shown in the figure), and computing and equipment 400.

[0082] Among them, the three sets of RFID tag arrays 311 are respectively set in parallel and insulated from the stationary contacts of the three-phase grounding switch A, B and C. The RFID tag array 311 includes multiple RFID tags arranged along the movement direction of the moving contact of the grounding switch. Each RFID tag has a unique tag feature.

[0083] The three tag pointers 321 are coaxially set with the moving contacts of each phase of the three-phase grounding switch A, B, and C, and correspond to the RFID tag array 311.

[0084] RFID detectors are used to read the tag features of RFID tags.

[0085] Computer device 400 is electrically connected to an RFID detector and a three-phase grounding switch, and computer device 400 can perform the above-mentioned functions. Figure 1 The method shown is for detecting faults in the grounding switch to achieve fault detection for each phase grounding switch.

[0086] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application. Those skilled in the art will understand that the modules in the apparatus of the embodiment can be distributed within the apparatus of the embodiment as described, or can be modified to be located in one or more apparatuses different from this embodiment. The modules of the above-described embodiment can be combined into one module, or further divided into multiple sub-modules.

[0087] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of any particular implementation scenario. The above disclosures are merely a few specific implementation scenarios of this application; however, this application is not limited thereto, and any variations conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A method of fault detection for a ground blade, the method comprising: The method includes: In response to a fault detection command from the grounding switch, the grounding switch is controlled to perform a target action, thereby driving a coaxial tag pointer to move on an RFID tag array via the moving contact of the grounding switch. The RFID tag array includes multiple RFID tags arranged along the movement direction of the moving contact of the grounding switch, and each RFID tag has a unique tag feature. In response to a target action whose execution time is greater than or equal to a reference time when the moving contact of the grounding knife reaches a designated position, the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array is determined by the tag features read by the RFID detector. Based on the serial numbers of the target RFID tag and the reference RFID tag in the RFID tag array, the fault detection information of the grounding switch is output, wherein the reference RFID tag is the RFID tag indicated by the tag pointer when the moving contact reaches the designated position under normal conditions.

2. The ground fault detection method of claim 1, wherein The RFID detector is disposed within the vertical space of the RFID tag array and the tag pointer. The tag pointer is provided with a radio frequency blocking plate, which is used to block RFID signals. The determination of the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array based on the tag features read by the RFID detector includes: The RFID detector reads the first tag feature queue of the RFID tag array after the target RFID tag is blocked by the radio frequency blocking patch; By comparing the first tag feature queue with the tag feature queue of the RFID tag array, the differential tag features in the tag feature queue of the RFID tag array that are different from those in the first tag feature queue are determined. The serial number of the RFID tag corresponding to the difference tag feature in the RFID tag array is used as the serial number of the target RFID tag.

3. The ground fault detection method of claim 1, wherein The RFID detector is disposed within the vertical space of the RFID tag array and the tag pointer. The tag pointer is provided with an identification tag and an RFID blocking plate, and the RFID blocking plate is located between the identification tag and the RFID tag array. The determination of the serial number of the target RFID tag indicated by the tag pointer in the RFID tag array based on the tag features read by the RFID detector includes: The RFID detector reads the third tag feature queue of the RFID tag array and the identification tag after the radio frequency blocking patch blocks the target RFID tag; Determine the neighboring label features in the third label feature queue that are adjacent to the preset label features of the identifier label; The serial number of the target RFID tag is determined based on the serial number of the RFID tag corresponding to the neighborhood tag feature in the RFID tag array.

4. The ground fault detection method of claim 1, wherein The RFID detector is mounted on the tag pointer. Determining the sequence number of the target RFID tag indicated by the tag pointer in the RFID tag array based on the tag features read by the RFID detector includes: reading, by the RFID detector, a tag feature of the target RFID tag; matching the tag feature of the target RFID tag with a tag feature queue of the RFID tag array to determine a serial number of the target RFID tag in the RFID tag array.

5. The ground fault detection method of claim 1, wherein, The fault detection information of the grounding knife is outputted based on the serial numbers of the target RFID tag and a reference RFID tag in the RFID tag array, including: if the serial number of the target RFID tag is greater than a first serial number, displaying fault detection information that the grounding knife is loose; if the serial number of the target RFID tag is less than a second serial number, displaying fault detection information that the grounding knife is stuck; if the serial number of the target RFID tag is less than or equal to the first serial number and greater than or equal to the second serial number, displaying fault detection information that the grounding knife is normal; wherein the first serial number and the second serial number are determined based on the serial number of the reference RFID tag in the RFID tag array, and the first serial number is greater than the second serial number.

6. The ground fault detection method of claim 1, wherein, The method further comprises: controlling the grounding knife in a normal state to perform a target action; during the process that the grounding knife in the normal state performs the target action, in response to that a tag feature of the target RFID tag is first acquired by the RFID detector or the acquired tag feature of the target RFID tag changes, positioning a position where a moving contact of the grounding knife is located as a test point, and calculating a reference time length for the moving contact of the grounding knife to move to the test point based on a starting time point when the grounding knife performs the target action and a current time point; associating the tag feature of the target RFID tag with the test point and the reference time length respectively; in response to a fault detection instruction of the grounding knife, randomly selecting at least one test point as the specified position.

7. A fault detection device for a ground blade, characterized by, The device comprises: a control module configured to control the grounding knife to perform a target action in response to a fault detection instruction of the grounding knife, so as to drive a coaxial tag pointer to move on an RFID tag array by a moving contact of the grounding knife, wherein the RFID tag array comprises a plurality of RFID tags arranged along a moving direction of the moving contact of the grounding knife, and each RFID tag has a unique tag feature; a positioning module configured to determine, in response to that an execution time length of the target action is greater than or equal to a reference time length for the moving contact of the grounding knife to reach a specified position, a serial number of a target RFID tag indicated by the tag pointer in the RFID tag array based on a tag feature read by the RFID detector; a fault detection module configured to output fault detection information of the grounding knife based on the serial numbers of the target RFID tag and a reference RFID tag in the RFID tag array, wherein the reference RFID tag is an RFID tag indicated by the tag pointer when the moving contact of the grounding knife reaches the specified position in the normal state.

8. A readable storage medium, on which a program or instructions are stored, characterized in that, The program or instruction is executed by the processor to implement the fault detection method of the grounding knife according to any one of claims 1 to 6. The program or instruction is executed by the processor to implement the fault detection method of the grounding knife according to any one of claims 1 to 6.

9. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor implements the fault detection method of the grounding knife as claimed in any one of claims 1 to 6 when executing the program.

10. A three-phase ground fault detection system, characterized by, Comprise: A three-phase grounding knife; Three groups of RFID tag arrays are respectively arranged in parallel with the static contacts of each phase of the three-phase grounding knife A, B, C, and the RFID tag array comprises a plurality of RFID tags arranged in the moving direction of the moving contact of the grounding knife, and the RFID tag has a unique tag feature; Three tag pointers are respectively arranged coaxially with the moving contacts of each phase of the three-phase grounding knife A, B, C, and correspond to the RFID tag array; An RFID detector is used to read the tag features of the RFID tags; The computer equipment as claimed in claim 9 is electrically connected with the RFID detector and the three-phase grounding knife.

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