A power transformation maintenance test anti-misoperation interlocking control method and electronic equipment

Abstract

The application relates to the technical field of power transformation maintenance, and discloses a power transformation maintenance test anti-misoperation interlocking control method and electronic equipment. The method comprises the following steps: obtaining maintenance task data, equipment data, operator data and standard operation process data corresponding to a current maintenance task; performing pre-interlocking verification, dynamic interlocking locking control and reset verification based on the maintenance task data, the equipment data and the operator data; and constructing a full-process and multi-dimensional interlocking anti-misoperation system. The application significantly improves the comprehensiveness and effectiveness of power transformation maintenance test anti-misoperation management and control.

Description

Technical Field

[0001] This invention relates to the field of substation maintenance technology, specifically to a substation maintenance test anti-misoperation interlocking control method and electronic equipment. Background Technology

[0002] Substation equipment is a core component of the power system, and its operational status directly affects the safe and stable power supply. Substation maintenance and testing are crucial means to ensure the healthy operation of substation equipment. Through regular or irregular maintenance and testing, potential equipment hazards can be identified and faults can be troubleshooted in a timely manner, ensuring that the equipment is in good operating condition. However, substation maintenance and testing involves a wide variety of equipment, high voltage levels, and complex operating procedures. In addition, some equipment is closely spaced, and energized equipment is close to the equipment under maintenance, which can easily lead to operational errors such as entering the wrong bay, accidentally operating energized equipment, unauthorized unlocking, and incorrect operating sequence. These errors can not only damage the substation equipment but also endanger the personal safety of maintenance personnel and cause serious power safety incidents such as large-scale power outages.

[0003] Currently, substation maintenance and testing anti-misoperation interlocking technologies mainly rely on single-equipment interlocking and offline interlocking, which cannot provide comprehensive control over the entire maintenance and testing process. For example, some existing technologies use single mechanical or electrical interlocking devices, which only target a specific piece of equipment (such as an isolating baffle or circuit breaker) for interlocking control. They lack full-chain control over the entire maintenance and testing process, and cannot achieve coordinated anti-misoperation between primary and secondary equipment. When secondary equipment malfunctions (such as the accidental activation or deactivation of a hard pressure plate), the interlocking warning cannot be triggered in time, posing a significant safety hazard. Summary of the Invention

[0004] This invention provides a method and electronic equipment for interlocking control to prevent misoperation during substation maintenance and testing, in order to solve the problem that existing technologies cannot comprehensively control the entire maintenance and testing process.

[0005] In a first aspect, the present invention provides a substation maintenance and testing anti-misoperation interlocking control method, comprising: Acquire multi-source basic data corresponding to the current maintenance task. The multi-source basic data includes maintenance task data, equipment data, operator data, and standard operating procedure data. Based on maintenance task data, equipment data, and operator data, a pre-interlock verification is performed. After the pre-interlock verification is passed, an operation authorization code is generated. The operation authorization code is used to obtain the operation permission of the field operation terminal. Acquire operator behavior data and equipment real-time status data, compare the operator behavior data and / or equipment real-time status data with the corresponding data in the standard operating procedure data, and execute dynamic interlocking control based on the comparison results; Perform a reset and verification on the equipment associated with the current maintenance task. Once the reset and verification are successful, release the interlock.

[0006] In one optional implementation, the multi-source basic data corresponding to the current maintenance task is obtained, including: Based on the current maintenance task, the multi-source basic data corresponding to the current maintenance task is obtained by searching in the pre-constructed ternary relationship graph of maintenance task, related equipment and operators. The ternary relationship graph is obtained by standardizing the raw data obtained from the power equipment monitoring system, maintenance management system, personnel qualification management system and field operation terminal.

[0007] In one optional implementation, the pre-interlock verification process includes: Personnel qualifications are verified based on operator data. If the operator has the corresponding operating qualifications, valid work certificate and training and assessment records for the current maintenance task, and the authorized operating scope covers the current maintenance and test interval, the verification is successful. The authorized operating scope is obtained through the operation authorization code, and the current maintenance and test interval is obtained through the on-site operation terminal. The equipment status is verified based on the equipment data. If the current maintenance and testing equipment is in a power outage state, the grounding switch is closed, adjacent live equipment is isolated and protected, and there are no unresolved fault alarms on the equipment, then the verification is successful. The compliance of the maintenance task is verified based on the maintenance task data. If the current maintenance task has completed the approval process, the task content matches the on-site equipment, and the maintenance and testing cycle meets the specifications, the verification is passed. The safety measures are verified. If the location and quantity of the grounding wires, the posting of safety warning signs, and the range of the barriers all comply with the safety regulations, the verification is passed.

[0008] In one optional implementation, the dynamic interlocking control process includes: Determine whether the sequence of the operator's operational behavior data conforms to the sequence of standard operating steps in the standard operating procedure data. If not, send the first warning instruction to the on-site operating terminal. Verify whether the operator's operational behavior data is within the authorized range. If it exceeds the authorized range, send a second warning command to the on-site operation terminal. The system compares the real-time status data of the equipment with the preset values ​​in the standard operating procedure data to verify whether there are any preset abnormalities in the real-time status data of the equipment. If any preset abnormalities are found, a third warning command is sent to the field operation terminal. Determine whether the operator's operational behavior data constitutes a preset violation. If it is a preset violation, send a fourth warning command to the on-site operation terminal.

[0009] In one optional implementation, the reset verification process includes: Perform a device position reset verification. If the device associated with the current maintenance task has been reset, the verification passes. Perform an electrical parameter reset verification. If the electrical parameters of the equipment associated with the current maintenance task are restored to the normal operating threshold range, the verification is successful. The safety measures reset verification is performed. If the grounding wire at the verification site has been removed, the barriers and safety warning signs have been removed, and the temporary safety facilities have been restored to their original positions, the verification is passed.

[0010] In one optional implementation, the substation maintenance and testing anti-misoperation interlocking control method further includes: Record the operation data, status data, and interlocking control behavior during the maintenance process, and generate a traceable operation log based on the operation data, status data, and interlocking control behavior during the maintenance process.

[0011] In one optional implementation, the operation log includes encrypted storage of operator information, operation time, operation steps, equipment status change data, interlock control behavior records, early warning information, and processing results.

[0012] In one alternative implementation, after generating a traceable operations log, the process includes: Regularly analyze and statistically process the operation data, status data, and interlocking control behavior during the maintenance process at preset time intervals to optimize the rules for pre-interlocking verification, the logic of dynamic interlocking control, and standard operating procedure data.

[0013] In one alternative implementation, after performing dynamic interlocking control based on the comparison results, the following steps are included: If the dynamic interlocking control triggers an emergency interlocking action, the operating circuit and power supply circuit of the equipment related to the emergency interlocking action will be cut off, and a fifth early warning instruction and emergency response procedure will be sent to at least one of the field operation terminal, maintenance management personnel terminal and substation operation and maintenance monitoring center.

[0014] In a second aspect, the present invention provides an electronic device, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the substation maintenance test anti-misoperation interlocking control method described in the first aspect or any corresponding embodiment thereof.

[0015] The present invention has the following beneficial effects: The substation maintenance and testing anti-misoperation interlocking control method of the present invention acquires maintenance task data, equipment data, operator data, and standard operating procedure data corresponding to the current maintenance task. Based on the maintenance task data, equipment data, and operator data, it performs pre-interlocking verification, dynamic interlocking control, and reset verification to construct a full-process, multi-dimensional interlocking anti-misoperation system. This breaks through the limitations of traditional anti-misoperation technologies that are singular and offline, and realizes full-chain control before, during, and after maintenance and testing. It covers multiple dimensions such as personnel, equipment, tasks, processes, and safety measures, eliminating potential misoperation risks from the source, process, and conclusion. The comprehensiveness and effectiveness of anti-misoperation control are significantly improved. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a flowchart illustrating the anti-misoperation interlocking control method for substation maintenance testing according to an embodiment of the present invention; Figure 2 This is a communication connection diagram of the interlocking control platform according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0020] The existing anti-misoperation interlocking technologies for substation maintenance and testing mainly rely on single-device interlocking and offline interlocking, which cannot comprehensively control the entire maintenance and testing process. These technologies use a combination of computer keys and interlocking devices, which suffers from non-real-time communication between the computer key and the anti-misoperation host, making real-time verification of the operation process impossible. Furthermore, the lack of real-time data collection on grounding wire and secondary equipment status increases the risk of erroneous operations such as missed grounding wire disconnection and accidental operation of secondary circuits. Additionally, some related technologies have fixed anti-misoperation logic, failing to dynamically adapt to the type of maintenance and testing task, changes in equipment status, and differences in operator qualifications, resulting in poor versatility and flexibility. Moreover, the lack of a robust operation traceability mechanism makes it difficult to trace the cause of accidents and determine responsibility after misoperation occurs, and it also prevents the optimization of anti-misoperation strategies based on historical data.

[0021] In addition, most existing anti-misoperation interlocking technologies do not achieve triple correlation verification of "person-task-equipment", which makes it easy for unqualified personnel to operate or to operate beyond the scope of the task. Furthermore, after maintenance and testing, there is a lack of comprehensive reset verification of equipment status and safety measures, which may lead to the equipment being put into use before it has been restored to normal operating status, causing subsequent operational failures.

[0022] In view of this, the present invention proposes a method for interlocking control to prevent misoperation during substation maintenance and testing, which can realize full-process, multi-dimensional, dynamic and intelligent interlocking control to prevent misoperation.

[0023] According to an embodiment of the present invention, a method for preventing misoperation during substation maintenance testing and interlocking control is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0024] This embodiment provides a substation maintenance and testing anti-misoperation interlocking control method. Figure 1 This is a flowchart of the substation maintenance test anti-misoperation interlocking control method according to an embodiment of the present invention, as shown below. Figure 1 As shown, the process includes the following steps: Step S101: Obtain the multi-source basic data corresponding to the current maintenance task. The multi-source basic data includes maintenance task data, equipment data, operator data, and standard operating procedure data.

[0025] Specifically, the substation maintenance test anti-misoperation interlocking control method of this invention is executed through an interlocking control platform, which is mounted on a mobile terminal, such as a mobile phone, tablet computer, or server. As the core of the entire anti-misoperation interlocking control system, the interlocking control platform undertakes the functions of data acquisition, processing, analysis, interlocking judgment, and control command issuance. Through communication connections with multiple existing systems, it breaks down information silos and achieves the fusion and sharing of multi-source data.

[0026] The interlocking control platform can be built using industrial-grade servers, equipped with data acquisition modules, data processing modules, interlocking judgment modules, command issuance modules, and data storage modules. For example... Figure 2 As shown, the interlocking control platform communicates with the substation equipment monitoring system, maintenance management system, personnel qualification management system, and field operation terminals (using portable smart terminals) via Ethernet. The communication protocol adopts the IEC61850 standard to ensure data transmission compatibility and real-time performance. In an alternative approach, the interlocking control platform can use an edge computing gateway instead of an industrial-grade server. Communication methods can include 5G, LoRa, and other wireless communications, and the communication protocol can be adapted to other power industry standards such as DL / T 860.

[0027] Multi-source basic data is a collection of basic information related to maintenance and testing collected from multiple systems such as power equipment monitoring system, maintenance management system, and personnel qualification management system. It includes maintenance task data, equipment data, operator data, and standard operating procedure data corresponding to the current maintenance task.

[0028] Step S102: Perform pre-interlock verification based on maintenance task data, equipment data, and operator data. After the pre-interlock verification is passed, an operation authorization code is generated. The operation authorization code is used to obtain operation permissions from the field operation terminal.

[0029] Specifically, pre-interlock verification is the first line of safety defense before maintenance and testing. It involves comprehensive verification across four dimensions: personnel, equipment, tasks, and safety measures. If all four dimensions pass, the pre-interlock verification is successful. If any one dimension fails, all relevant operating permissions are locked and a warning is issued, ensuring that the pre-maintenance and testing preparations comply with safety regulations and eliminating potential operational risks from the outset. Specifically, personnel qualification verification ensures that operators have the ability and authority to perform the current maintenance and testing tasks, preventing unqualified or unqualified personnel from operating the equipment. Equipment status verification ensures that the equipment under maintenance and testing is in a safe de-energized state, and that adjacent live equipment is effectively isolated, preventing accidents caused by live-line work. Task compliance verification ensures the legality and standardization of the maintenance and testing tasks, preventing unauthorized or out-of-scope maintenance and testing tasks. Safety measure verification ensures that on-site safety measures are in place, providing a safe working environment for maintenance and testing personnel.

[0030] The operation authorization code adopts a dynamic temporary authorization method to avoid the security risks of traditional fixed authorization. The authorization code contains core information such as maintenance and test interval information, operator information, authorized operation duration and the range of equipment that can be operated. The validity period of the authorization code is set according to the expected duration of the maintenance and test task. After the validity period expires, it will automatically become invalid and the operation permission will be locked to prevent the abuse of authorization.

[0031] In one example, after all pre-interlocking verifications pass, the interlocking control platform generates a unique maintenance and test operation authorization code "20260128110kV01Zhang". This code includes the maintenance interval (110kV #1 interval), operator (Zhang), authorized operation duration (4 hours), and permitted equipment (#1 circuit breaker, testing instruments). The authorization code is valid for 4 hours. Zhang enters the authorization code and identity verification information, such as fingerprint information, through the on-site operation terminal. Operation can only begin after both verifications are successful, further enhancing the security of operation access control. In an alternative approach, the validity period of the operation authorization code can be set to 1-8 hours depending on the task complexity. Fields such as task number and security level can be added, and identity verification methods can use facial recognition or iris recognition instead of fingerprint verification.

[0032] Step S103: Obtain operator behavior data and equipment real-time status data, compare the operator behavior data and / or equipment real-time status data with the corresponding data in the standard operating procedure data, and execute dynamic interlocking control based on the comparison results.

[0033] Specifically, the on-site operation terminal is equipped with an infrared positioning module and an image acquisition module. The infrared positioning module is used to accurately identify the operator's position and prevent them from moving to the wrong interval. The image acquisition module is used to capture the operation process in real time and upload it to the interlocking control platform for image recognition, which helps to determine the standardization of the operation data and also retains the operation video data for traceability. In an alternative method, a GPS module or UWB module can be used to replace the infrared positioning module, and the image acquisition module can be equipped with video recording function to improve the accuracy of judging the standardization of operation.

[0034] During maintenance and testing, operations are performed through the on-site operation terminal. The infrared positioning module of the on-site operation terminal identifies the operation location in real time (such as the 110kV#1 bay), and the image acquisition module captures the operation process in real time, collecting the operator's operation behavior data and the equipment's real-time status data. The operator's operation behavior data and the equipment's real-time status data are uploaded to the interlocking control platform and compared with the preset standard operation procedures and equipment safety status thresholds to execute dynamic interlocking control.

[0035] Dynamic interlocking control includes operation sequence interlocking, operation permission interlocking, equipment status abnormality interlocking, and violation operation interlocking.

[0036] Dynamic interlocking control is the core component of the entire anti-misoperation control system. By monitoring the operation process and equipment status in real time, it enables dynamic control of operational behavior and timely detection and prevention of violations and abnormal situations.

[0037] Step S104: Perform a reset verification on the equipment associated with the current maintenance task. After the reset verification is successful, release the interlock.

[0038] Specifically, reset verification is a key control step after maintenance and testing. It ensures that the equipment can be restored to normal operation after maintenance and testing, and that safety measures can be reset in a timely manner to avoid subsequent operational failures caused by equipment not being reset or safety measures not being removed.

[0039] After the maintenance and testing are completed, the interlocking control platform resets and verifies the equipment status. If the verification passes, the interlock is released and a maintenance and testing closed-loop report is generated. If the verification fails, the interlock status is maintained and an anomaly rectification prompt is displayed. The maintenance and testing closed-loop report records information throughout the entire maintenance and testing process, including maintenance task information, operator information, operation process data, equipment status changes, interlocking control behaviors, early warning information and handling results, reset and verification results, etc., realizing closed-loop management of maintenance and testing tasks and providing a reference for subsequent equipment operation and maintenance optimization.

[0040] The substation maintenance and testing anti-misoperation interlocking control method of this invention acquires maintenance task data, equipment data, operator data, and standard operating procedure data corresponding to the current maintenance task. Based on the maintenance task data, equipment data, and operator data, it performs pre-interlocking verification, dynamic interlocking control, and reset verification to construct a full-process, multi-dimensional interlocking anti-misoperation system. This breaks through the limitations of traditional anti-misoperation technologies, which are singular and offline, and realizes full-chain control before, during, and after maintenance and testing. It covers multiple dimensions such as personnel, equipment, tasks, processes, and safety measures, eliminating potential misoperation risks from the source, process, and conclusion stages. The comprehensiveness and effectiveness of anti-misoperation control are significantly improved.

[0041] In some embodiments, acquiring multi-source basic data corresponding to the current maintenance task includes: Based on the current maintenance task, the multi-source basic data corresponding to the current maintenance task is obtained by searching in the pre-constructed ternary relationship graph of maintenance task, related equipment and operators. The ternary relationship graph is obtained by standardizing the raw data obtained from the power equipment monitoring system, maintenance management system, personnel qualification management system and field operation terminal.

[0042] The acquired raw data includes: equipment data from the power equipment monitoring system for primary equipment (circuit breakers, disconnectors, grounding switches, etc.) and secondary equipment (air switches, hard pressure plates, etc.), including basic equipment data and real-time equipment status data, such as opening and closing status, insulation resistance, winding temperature, and grounding resistance; maintenance task data from the maintenance management system, such as task name, maintenance interval, maintenance content, approval process, and safety requirements; qualification information of operators from the personnel qualification management system, such as operator qualification level, work certificate, training and assessment records, and authorized operation scope; and on-site operation behavior data and real-time equipment status data collected by the on-site operation terminal.

[0043] The on-site operation terminal is used to enable operators to interact with the interlocking control platform and to receive control commands and early warning information issued by the platform.

[0044] Standardized processing of multi-source basic data is a prerequisite for achieving precise interlocking control. By unifying the formats of raw data of different types and formats, analog data, switch data, and text data are converted into a unified data format, facilitating platform analysis and processing. Simultaneously, abnormal data is removed from the collected data, filtering out erroneous and invalid data caused by sensor failures, communication interference, etc., ensuring data accuracy. Data encryption ensures the security of data transmission and storage, preventing data tampering and leakage. Through data association mapping, a three-dimensional relationship graph of "maintenance task - associated equipment - operator" is established, clearly defining the equipment scope and operators corresponding to each maintenance task, providing data support for subsequent interlocking verification.

[0045] In one example, the collected multi-source basic data includes: maintenance task data (task name: 110kV #1 circuit breaker mechanical characteristic test, maintenance interval: 110kV #1 interval, maintenance content: circuit breaker opening and closing time and speed test, approval status: approved, safety measures requirements: install 2 sets of grounding wires, set up barriers and safety warning signs); equipment data (#1 circuit breaker model: LW36-126, rated current: 3150A, real-time status: open, grounding switch: closed, insulation resistance: 2000MΩ, adjacent #2 circuit breaker status: energized, secondary circuit breakers: all open). Hardened pressure plate: All removed); Operator data (Operator: Zhang, Operator qualification: Level 2 High Voltage Tester, Valid on-the-job certificate, recently passed training and assessment, Authorized operating scope: 110kV circuit breaker maintenance and testing); Standard operating procedure data (Standard steps for mechanical characteristic test of #1 circuit breaker: 1. Verify that the equipment is de-energized; 2. Install grounding wire; 3. Disconnect the secondary circuit breaker and remove the hardened pressure plate; 4. Connect the testing instrument; 5. Perform the opening and closing mechanical characteristic test; 6. Remove the testing instrument after the test is completed; 7. Restore the secondary circuit breaker and engage the hardened pressure plate; 8. Remove the grounding wire; 9. Confirm that the equipment status is reset).

[0046] The collected multi-source basic data were standardized: analog data such as insulation resistance and opening / closing time were converted into digital data; switch data such as equipment opening / closing status and circuit breaker status were converted into a standardized format of "1 (closed / engaged), 0 (opened / deactivated)"; one set of invalid insulation resistance data due to sensor interference was removed; the data was encrypted using the AES encryption algorithm; a ternary relationship graph was established for "#1 circuit breaker mechanical characteristic test - #1 circuit breaker and adjacent equipment - Mr. Zhang" to complete the data association mapping. During subsequent maintenance tests, the multi-source basic data corresponding to the current maintenance task can be retrieved from the ternary relationship graph.

[0047] This invention achieves precise association between maintenance tasks, related equipment, and operators through a ternary relationship graph, eliminating information silos, improving data retrieval efficiency and accuracy, and performing pre-interlock verification and dynamic access control based on the ternary relationship graph to ensure accurate matching of operators, maintenance tasks, and operating equipment. This effectively prevents violations such as unqualified operation, operation beyond the authorized scope, and wrong interval operation, and improves the security and standardization of operation access control.

[0048] This invention supports multi-system data interoperability and adopts multi-system data fusion technology. It does not require large-scale modification of the existing substation operation and maintenance system. It only needs to build an interlocking control platform to achieve communication with the existing system. It has low investment cost, low modification difficulty, and is easy to promote and apply. It can be widely adapted to the maintenance and testing scenarios of various substations, including conventional substations, smart substations and compact GIS substations.

[0049] By enabling data exchange between multiple systems, the status of secondary equipment such as circuit breakers and hard pressure plates can be included in the interlocking judgment scope, realizing collaborative anti-misoperation between primary and secondary equipment. This solves the technical defects of existing technologies, such as the disconnect between primary and secondary equipment and the lack of anti-misoperation measures for secondary operations, avoiding safety accidents caused by misoperation of secondary equipment and improving the comprehensiveness of anti-misoperation control.

[0050] In some embodiments, the pre-interlock verification process includes: Step S1021: Verify personnel qualifications based on operator data. If the operator has the corresponding operating qualifications for the current maintenance task, the validity of the on-the-job certificate and training and assessment records, and the authorized operating scope covers the current maintenance and testing interval, the verification is successful. The authorized operating scope is obtained through the operation authorization code, and the current maintenance and testing interval is obtained through the on-site operation terminal.

[0051] Specifically, the maintenance and testing interval is an independent electrical interval unit corresponding to the current maintenance task, such as the 110kV#1 interval or the 35kV main transformer interval, used to limit the operating range.

[0052] The on-site operation terminal is equipped with an infrared positioning module, which is used to accurately identify the operator's operating position, i.e. the current maintenance and testing interval, to prevent the operator from going to the wrong interval.

[0053] The interlocking control platform retrieves the operator's qualification data to verify whether the operator has the corresponding operating qualifications for the maintenance and testing items, the validity of the on-the-job certificate, and recent training and assessment records. At the same time, it verifies whether the operator's authorized operating scope covers the current maintenance and testing interval.

[0054] In one example, the current maintenance task is the maintenance and testing of circuit breakers in a 110kV smart substation. Zhang's operating qualifications are retrieved and verified to be that he has a Level II high-voltage testing worker qualification, his work certificate is valid, he has recently passed training and assessment, and his authorized operating scope covers the maintenance and testing of 110kV circuit breakers. The verification is successful.

[0055] In another example, the current maintenance task is a transformer insulation test at a 35kV conventional substation. The personnel qualification verification failed (operator Li did not have the qualification for transformer insulation testing). The interlocking control platform immediately locked all operating permissions for the 35kV transformer maintenance bay and issued an audible and visual warning (voice prompt "Personnel qualification does not meet the requirements, operation is prohibited"). At the same time, the warning information was pushed to the maintenance management personnel terminal, informing them of the specific reason for the operator's qualification failure. After the maintenance management personnel replaced the operator with Wang, who had the corresponding qualification, the pre-interlocking verification was re-executed. After the verification passed, an operation authorization code was generated.

[0056] Step S1022: Verify the equipment status based on the equipment data. If the current maintenance and testing equipment is in a power-off state, the grounding switch is closed, adjacent live equipment is isolated and protected, and there are no unresolved fault alarms on the equipment, then the verification is successful.

[0057] For example, retrieve the real-time status data of circuit breaker #1, verify that it is in the open state, the grounding switch is closed, the insulation resistance of 2000MΩ meets the safety threshold, and the adjacent circuit breaker #2 is in the energized operation state and has been set with an isolation barrier. If the verification is successful, the verification will fail if any data does not meet the requirements.

[0058] Step S1023: Perform a compliance check on the maintenance task data. If the current maintenance task has completed the approval process, the task content matches the on-site equipment, and the maintenance test cycle meets the specifications, the check is successful.

[0059] For example, the mechanical characteristic test task of verifying circuit breaker #1 has gone through the approval process, the task content matches circuit breaker #1, and the maintenance cycle meets the specification requirements (once every 2 years). The verification is passed. Conversely, if any data does not meet the requirements, the verification fails.

[0060] Step S1024: Perform safety measure verification. If the location and quantity of on-site grounding wires, the posting of safety warning signs, and the range of barrier installation all comply with safety regulations, the verification is passed.

[0061] The on-site operation terminal is equipped with an image acquisition module, which is used to capture the operation process in real time and upload it to the interlocking control platform for image recognition. This helps to determine the standardization of the operation behavior data and also retains operation video data for traceability.

[0062] The image and location data collected by the on-site operation terminal confirmed that two sets of grounding wires have been installed on-site (the location meets the specifications), barriers and "Stop, High Voltage Danger" safety warning signs have been set up, and the safety measures are in place. The verification was successful.

[0063] This invention implements a quadruple pre-interlock verification, controlling the process from multiple dimensions including personnel, equipment, tasks, and safety measures. This significantly reduces potential safety hazards before maintenance, clarifies verification rules for qualifications, scope, equipment status, and safety measures, and makes the error prevention logic clear, quantifiable, and executable. It specifically addresses typical misoperation problems such as unqualified operation, live operation, and inadequate safety measures, thereby improving proactive prevention capabilities.

[0064] In some embodiments, the dynamic interlocking control process includes: Step S1031: Determine whether the order of the operator's operation behavior data conforms to the order of standard operation steps in the standard operation procedure data. If not, send a first warning instruction to the on-site operation terminal.

[0065] This step is an operation sequence interlocking step. The operation sequence interlocking is based on a preset standard operating procedure to ensure that operators strictly follow the standard procedures. If the operation steps are reversed, omitted, or repeated, the interlocking control platform will immediately issue an audible and visual warning and lock subsequent operation permissions. Only after the operator corrects the error and the platform verifies it can subsequent operations be unlocked, thus avoiding misoperation caused by reversed, omitted, or repeated operation sequences. For example, in maintenance and testing, it is necessary to test for power before grounding before equipment maintenance can be carried out. If the operator performs the grounding operation without testing for power, the interlocking control platform will immediately trigger the interlock and issue a warning.

[0066] In one example, the operator followed the standard operating procedure to perform operations such as voltage testing, installing the grounding wire, and disconnecting the secondary circuit breaker. When the operator reached the "connecting the testing instrument" step, they mistakenly connected the testing instrument to the terminal block of the adjacent #2 circuit breaker. The interlocking control platform identified the abnormal operation position through the infrared positioning module and compared it with the operating procedure. Finding that the operation object was incorrect, the platform immediately sent a first warning command. After receiving the first warning command, the on-site operating terminal issued an audible and visual warning (voice prompt "Incorrect operation object, do not touch live equipment," and the terminal indicator light flashed red) and locked subsequent operation permissions. After the operator corrected the error and connected the testing instrument to the terminal block of the #1 circuit breaker, the platform verified the connection and unlocked subsequent operations.

[0067] Step S1032: Verify whether the operator's operation behavior data is within the authorized range. If it exceeds the authorized range, send a second warning command to the on-site operation terminal.

[0068] This step is an operation permission locking step. It verifies in real time whether the operator's operation is within the authorized scope. If the operation exceeds the authorized scope, the locking is triggered immediately, the operation is prohibited, and the violation information is recorded.

[0069] In one example, the authorized operation code determines the authorized scope. During the authorized operation period, the operator only operates on the #1 circuit breaker and the test instrument. No operation exceeds the authorized scope. The interlocking control platform continues to allow the operation. If the operation exceeds the authorized scope, a second warning command is immediately sent. After receiving the second warning command, the field operation terminal issues an abnormal operation scope warning, notifies the operator to stop the current operation and prompts the operator with the authorized scope.

[0070] Step S1033: Compare the real-time status data of the equipment with the preset values ​​in the standard operation process data to verify whether the real-time status data of the equipment has a preset abnormality. If a preset abnormality occurs, send a third warning command to the field operation terminal.

[0071] This step is a device status abnormality interlocking step. It monitors the electrical parameters and mechanical status of the equipment in real time. If any abnormal situation occurs, such as parameters exceeding the safety threshold or sudden changes in equipment status, an emergency interlock is immediately triggered, the operating circuit is cut off, a high-level warning is issued, on-site personnel are notified to evacuate, and the emergency response procedure is initiated.

[0072] In one example, during the mechanical characteristic test of opening and closing, the interlocking control platform monitored the insulation resistance of circuit breaker #1 in real time. Suddenly, it detected that the insulation resistance dropped to 500MΩ (below the safety threshold of 1000MΩ) and sent a third warning command to the field operation terminal. Upon receiving the third warning command, the field operation terminal immediately triggered emergency interlocking, cut off the test operation circuit, and issued a high-level warning (voice prompt "Equipment status abnormal, evacuate immediately," and simultaneously pushed the warning information to the maintenance management personnel terminal). The operator immediately stopped the operation, and the investigation revealed poor wiring contact of the test instrument. After rectification, the insulation resistance returned to 2000MΩ, the interlocking control platform passed the verification, and the operation was unlocked.

[0073] Step S1034: Determine whether the operator's operation behavior data is a preset violation operation. If it is a preset violation operation, send a fourth warning command to the on-site operation terminal.

[0074] This step is a non-compliance locking step, which identifies serious violations such as unauthorized disassembly of the locking device, falsification of operation data, and unauthorized unlocking. Once detected, all relevant operation permissions are immediately locked, details of the violation are recorded, and the violation is simultaneously reported to the maintenance management system. Maintenance and testing tasks are suspended until the violation is rectified.

[0075] In one example, if no violations such as unauthorized disassembly of the interlocking device, falsification of operational data, or unauthorized unlocking occur during the entire operation, the platform will not trigger the unauthorized operation interlock. If it is detected that operator Wang disassembles the on-site interlocking device without authorization during the test, the interlocking control platform identifies the violation through the image acquisition module, sends a fourth warning command to the on-site operating terminal, and the on-site operating terminal immediately locks all operating permissions of the operator, records the details of the violation (operator, violation time, violation behavior), and simultaneously reports it to the maintenance management system, suspending the maintenance test task; the maintenance management personnel criticize and educate operator Wang, rectify the violation, restore the interlocking device, unlock the operating permissions, and continue to execute the maintenance test task.

[0076] This invention implements four types of dynamic interlocks: operation sequence interlock, operation permission interlock, equipment status anomaly interlock, and violation operation interlock. These interlocks cover operation sequence, operation permission, equipment status, and violation behavior, forming a real-time prevention and control system throughout the entire process. Different anomaly types trigger warnings at different levels, making it easier for on-site personnel to quickly identify the problem type.

[0077] In some embodiments, the reset verification process includes: Step S1041: Perform equipment position reset verification. If the equipment associated with the current maintenance task has been reset, the verification passes.

[0078] Specifically, the reset verification includes equipment position reset verification, electrical parameter reset verification, and safety measure reset verification.

[0079] Equipment position reset verification is used to verify whether equipment such as circuit breakers, disconnectors, and grounding switches have been restored to their initial positions before maintenance and testing, and whether the circuit breakers and hard pressure plates of secondary equipment have been restored to normal operating conditions, ensuring that the operating status of the equipment meets the specifications.

[0080] In one example, after the maintenance test was completed, operator Zhang completed the dismantling of the test instruments, restoration of the secondary circuit breakers, and removal of the grounding wire. The interlocking control platform performed equipment position reset verification, verifying that the #1 circuit breaker was in the open state (consistent with the state before the test), all secondary circuit breakers were engaged, all hard pressure plates were restored to their pre-test positions, and the grounding switch was in the open state. The verification was successful.

[0081] Step S1042: Perform electrical parameter reset verification. If the electrical parameters of the equipment associated with the current maintenance task are restored to the normal operating threshold range, the verification is successful.

[0082] Electrical parameter reset verification is used to detect electrical parameters of equipment such as insulation resistance, winding temperature, and grounding resistance, and to verify whether they have been restored to the normal operating threshold range, so as to ensure that the electrical performance of the equipment meets the standards.

[0083] In one example, the electrical parameter reset verification includes: detecting that the insulation resistance of circuit breaker #1 is 2000MΩ, and restoring parameters such as opening and closing time and speed to the normal operating threshold range, thus passing the verification.

[0084] Step S1043: Perform a safety measure reset verification. If the grounding wire at the verification site has been removed, the barriers and safety warning signs have been removed, and the temporary safety facilities have been restored to their original positions, then the verification is successful.

[0085] Safety measure reset verification is used to verify whether the on-site grounding wire has been completely removed, whether the barriers and safety warning signs have been removed, and whether the temporary safety facilities have been restored to their original positions, so as to ensure that the work site is restored to normal operation and maintenance status.

[0086] In one example, the safety measure reset verification includes: verifying that all on-site grounding wires have been removed, barriers and safety warning signs have been removed, temporary safety facilities have been restored to their original positions, and the verification passes.

[0087] After all reset verifications pass, the interlocking control platform releases the interlocking, generates a maintenance and test closed-loop report, and clearly records the information of the entire maintenance and test process; at the same time, the operation authorization code automatically expires.

[0088] The embodiments of the present invention ensure that the equipment and the on-site environment are fully restored after maintenance through triple-repositioning verification, thus avoiding any remaining safety hazards.

[0089] In some embodiments, the substation maintenance and testing anti-misoperation interlocking control method further includes: Step S105: Record the operation data, status data, and interlocking control behavior during the maintenance process, and generate a traceable operation log based on the operation data, status data, and interlocking control behavior during the maintenance process.

[0090] Specifically, taking the circuit breaker maintenance task of a 110kV smart substation as an example, the operation data, status data and interlocking control behavior of the maintenance process include operation time, operation steps, status changes of #1 circuit breaker, insulation resistance data, early warning information and processing results, etc.

[0091] The operation log uses encrypted storage to ensure data authenticity and integrity, preventing tampering. It meticulously records operator information, operation time, operation steps, equipment status changes, interlock control behavior records, early warning information, and handling results. It supports queries by maintenance task, operation time, equipment number, and operator. In the event of an operational error, reverse tracing analysis can be performed using the operation log to identify the point of origin, cause, and responsible parties, providing a basis for accident handling and liability determination. Furthermore, statistical analysis of the operation log data can identify weaknesses in the maintenance and testing process, providing data support for optimizing subsequent error prevention strategies.

[0092] The operation log can be stored in a distributed or local manner, and the query dimensions can include warning types and equipment failure types. The traceability report supports the export of custom templates.

[0093] This invention enables the entire maintenance process to be recorded and traceable by establishing standardized operation logs, facilitating the investigation of accident causes and the determination of responsibility.

[0094] In some embodiments, after generating a traceable operations log, the process includes: Step a1: Periodically analyze the operation data, status data and interlocking control behavior of the maintenance process according to the preset time interval, and optimize the rules of pre-interlocking verification, the logic of dynamic interlocking control and standard operation process data.

[0095] Specifically, the interlocking control platform regularly collects and analyzes operational data, early warning data, and malfunction cases. Combined with the actual needs of on-site maintenance and testing, it automatically optimizes pre-interlocking verification rules, dynamic interlocking logic, and standard operating procedures to improve the adaptability and accuracy of interlocking control. At the same time, it supports manual adjustment of interlocking parameters to adapt to the needs of special maintenance and testing scenarios.

[0096] The interlocking logic self-learning optimization function enables this method to dynamically adapt, continuously optimizing and improving based on changes in actual field conditions, avoiding the shortcomings of traditional error prevention methods such as fixed logic and poor adaptability. Regular statistical analysis of operational data can identify common errors and non-standard behaviors during operation, optimizing standard operating procedures and interlocking logic. Analysis of early warning data allows for adjustment of early warning thresholds and levels, improving the accuracy and timeliness of early warnings. Analysis of misoperation cases allows for targeted optimization of pre-interlocking verification rules, eliminating similar potential risks at the source. Simultaneously, manual adjustment of interlocking parameters is supported, adapting to the needs of special maintenance and testing scenarios (such as temporary maintenance and emergency maintenance), enhancing the method's versatility and flexibility.

[0097] The preset time interval can be flexibly set. For example, at the end of each month, the interlocking control platform statistically analyzes the operation data and early warning data for the month. If "test instrument wiring error" is found to be a common early warning type, the platform automatically optimizes the operation sequence interlocking logic and adds a position verification step after the test instrument wiring is completed. Simultaneously, based on actual site requirements, the insulation resistance safety threshold is manually adjusted to 800MΩ to adapt to the aging state of the substation's #1 circuit breaker, improving the adaptability and accuracy of the interlocking control. In an alternative approach, fifthly, the interlocking logic self-learning optimization cycle can be adjusted to every half month or quarter, and the optimization scope can be expanded to include early warning thresholds and verification process priorities. Manual parameter adjustments can be configured with hierarchical control permissions for administrators and maintenance personnel.

[0098] The embodiments of the present invention can dynamically adjust the interlocking logic and operation permissions to adapt to the maintenance and testing needs of different scenarios. At the same time, through self-learning optimization, it continuously improves the accuracy and adaptability of interlocking control, making it more versatile and flexible.

[0099] In some embodiments, after performing dynamic interlocking control based on the comparison results, the following is included: Step b1: If the dynamic interlocking control triggers an emergency interlocking action, the operating circuit and power supply circuit of the equipment related to the emergency interlocking action are cut off, and a fifth early warning instruction and emergency response procedure are sent to at least one of the field operation terminal, maintenance management personnel terminal and substation operation and maintenance monitoring center.

[0100] Specifically, the interlocking control platform also has a linkage emergency response function. When an emergency interlock is triggered, it automatically cuts off the operating circuit and power circuit of the relevant equipment, and simultaneously pushes early warning information and emergency response procedures to the on-site operation terminal, maintenance management personnel terminal and substation operation and maintenance monitoring center. The push can be made through various methods such as SMS and voice calls. Differentiated emergency response plans are preset for different accident types such as equipment being energized and personnel violating regulations, to guide on-site personnel to quickly carry out emergency response and reduce accident losses.

[0101] The interlocking emergency response function enables rapid response and handling of malfunctions and anomalies. In emergency situations such as sudden equipment energization or personnel violation of regulations, the interlocking control platform can not only trigger interlocking in a timely manner, but also link with relevant systems and terminals to push early warning information and emergency response procedures, guide on-site personnel to evacuate quickly, cut off power, and investigate hidden dangers, so as to minimize accident losses and ensure the safety of personnel and equipment.

[0102] This invention also provides an electronic device, including a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the substation maintenance test anti-misoperation interlocking control method of this invention.

[0103] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0104] The following is a detailed reference. Figure 3 The diagram illustrates a structural schematic suitable for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processor, etc.) 301, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 302 or a program loaded from memory 308 into random access memory (RAM) 303. The RAM 303 also stores various programs and data required for the operation of the electronic device. The processor 301, ROM 302, and RAM 303 are interconnected via a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0105] Typically, the following devices can be connected to I / O interface 305: input devices 306 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 307 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 308 including, for example, magnetic tapes, hard disks, etc.; and communication devices 309. Communication device 309 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 3Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0106] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 309, or installed from a memory 308, or installed from a ROM 302. When the computer program is executed by the processor 301, it performs the functions defined in the substation maintenance test anti-misoperation interlocking control method of the embodiments of the present invention.

[0107] Figure 3 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0108] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that the computer, processor, microprocessor controller, or programmable hardware includes storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the substation maintenance test anti-misoperation interlocking control method shown in the above embodiments is implemented.

[0109] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0110] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for interlocking control to prevent misoperation during substation maintenance and testing, characterized in that, include: Obtain multi-source basic data corresponding to the current maintenance task, including maintenance task data, equipment data, operator data, and standard operating procedure data; Based on the maintenance task data, the equipment data, and the operator data, a pre-interlock verification is performed. After the pre-interlock verification is passed, an operation authorization code is generated. The operation authorization code is used to obtain the operation permission of the on-site operation terminal. Acquire operator behavior data and equipment real-time status data, compare the operation behavior data and / or the equipment real-time status data with the corresponding data in the standard operation procedure data, and execute dynamic interlocking control based on the comparison results; Perform a reset and verification on the equipment associated with the current maintenance task. Once the reset and verification are successful, release the interlock.

2. The method according to claim 1, characterized in that, The acquisition of multi-source basic data corresponding to the current maintenance task includes: Based on the current maintenance task, the multi-source basic data corresponding to the current maintenance task is obtained by searching in a pre-constructed ternary relationship graph of maintenance task, associated equipment and operators. The ternary relationship graph is obtained by standardizing the raw data obtained from the power equipment monitoring system, maintenance management system, personnel qualification management system and field operation terminal.

3. The method according to claim 1, characterized in that, The pre-interlocking verification process includes: Personnel qualification verification is performed based on the operator data. If the operator has the corresponding operating qualification, valid work certificate and training and assessment record for the current maintenance task, and the authorized operation scope covers the current maintenance and test interval, the verification is successful. The authorized operation scope is obtained through the operation authorization code, and the current maintenance and test interval is obtained through the on-site operation terminal. The equipment status is verified based on the equipment data. If the current maintenance and testing equipment is in a power outage state, the grounding switch is closed, adjacent live equipment is isolated and protected, and there are no unresolved fault alarms on the equipment, then the verification is successful. The compliance of the maintenance task is verified based on the maintenance task data. If the current maintenance task has completed the approval process, the task content matches the on-site equipment, and the maintenance and testing cycle meets the specifications, the verification is successful. The safety measures are verified. If the location and quantity of the grounding wires, the posting of safety warning signs, and the range of the barriers all comply with the safety regulations, the verification is passed.

4. The method according to claim 1, characterized in that, The dynamic interlocking control process includes: Determine whether the order of the operator's operational behavior data conforms to the order of standard operating steps in the standard operating procedure data. If not, send a first warning instruction to the on-site operation terminal. Verify whether the operator's operational behavior data is within the authorized range. If it exceeds the authorized range, send a second warning command to the on-site operation terminal. The real-time status data of the device is compared with the preset values ​​in the standard operation process data to verify whether the real-time status data of the device has a preset abnormal situation. If the preset abnormal situation occurs, a third warning command is sent to the field operation terminal. If the operator's operational behavior data is determined to be a preset violation, a fourth warning command is sent to the on-site operation terminal.

5. The method according to claim 1, characterized in that, The reset verification process includes: Perform a device location reset verification. If the device associated with the current maintenance task has been reset, the verification passes. Perform an electrical parameter reset verification. If the electrical parameters of the equipment associated with the current maintenance task are restored to the normal operating threshold range, the verification is successful. The safety measures reset verification is performed. If the grounding wire at the verification site has been removed, the barriers and safety warning signs have been removed, and the temporary safety facilities have been restored to their original positions, the verification is passed.

6. The method according to claim 1, characterized in that, Also includes: Record the operation data, status data, and interlocking control behavior during the maintenance process, and generate a traceable operation log based on the operation data, status data, and interlocking control behavior during the maintenance process.

7. The method according to claim 6, characterized in that, The operation log includes encrypted storage of operator information, operation time, operation steps, equipment status change data, interlock control behavior records, early warning information, and processing results.

8. The method according to claim 7, characterized in that, After generating a traceable operations log, the following is included: The operation data, status data, and interlocking control behavior of the maintenance process are statistically analyzed periodically at preset time intervals to optimize the rules of the pre-interlocking verification, the logic of the dynamic interlocking control, and the standard operation process data.

9. The method according to claim 1, characterized in that, After performing dynamic interlocking control based on the comparison results, the following is included: If the dynamic interlocking control triggers an emergency interlocking action, the operating circuit and power supply circuit of the equipment related to the emergency interlocking action are cut off, and a fifth early warning instruction and emergency response procedure are sent to at least one of the field operation terminal, maintenance management personnel terminal and substation operation and maintenance monitoring center.

10. An electronic device, characterized in that, include: The system includes a memory and a processor, which are interconnected. The memory stores computer instructions, and the processor executes the computer instructions to perform the substation maintenance test anti-misoperation interlocking control method according to any one of claims 1 to 9.

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