Grounding switch detection method and system for low-voltage power system

Abstract

The invention relates to the technical field of low-voltage power systems, and discloses a grounding switch detection method for a low-voltage power system, and the method comprises the steps: arranging at least one group of grounding switches and corresponding main switches, arranging a mechanical interlocking device between the grounding switches and the main switches, reading the initial state data of all the grounding switches and the main switches during initialization, and determining the initial state data of the grounding switches and the main switches; updating state record data corresponding to each group of grounding switches and main switches at preset time intervals or when a state change signal is received; when it is detected that the state of the grounding switch or the main switch changes, corresponding real-time state data are obtained, a logic control algorithm is triggered, the latest state data are evaluated based on the logic control algorithm, and corresponding evaluation result data are obtained; whether permission is allowed is judged based on the evaluation result data, and if yes, a closing instruction is sent to a corresponding main switch; otherwise, keeping the current state unchanged. The operation stability of the power system can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage power systems, and in particular to a grounding switch detection method and system for low-voltage power systems. Background Art

[0002] In low-voltage power systems, it is crucial to ensure safe operation during equipment inspection or maintenance. As a key safety device, the grounding knife effectively protects workers from electric shock by cutting off the power supply and providing a visible breakpoint while connecting the circuit to the ground to eliminate residual voltage. However, there is a lack of effective physical or logical interlocking mechanism between the grounding knife and the main switch (incoming line) in traditional systems, which may lead to the main switch being mistakenly closed when the grounding knife is not operated correctly, thus causing electrical accidents.

[0003] In addition, due to the lack of standardized operating procedures, operators may skip key steps or make mistakes in the order, increasing the risk of misoperation. With the increasing complexity of power systems, especially in multi-circuit application scenarios, it has become particularly difficult to ensure that the grounding switch of each circuit is linked to the main switch status.

[0004] In view of the existence of the above problems, it is particularly urgent to develop a method that can effectively prevent misoperation and ensure the linkage between the grounding knife and the main switch state. From the above, it can be seen that how to improve the operational stability of the power system still needs to be solved. Summary of the invention

[0005] In order to improve the operational stability of the power system, the present application provides a grounding switch detection method and system for a low-voltage power system.

[0006] In a first aspect, the present application provides a grounding switch detection method for a low voltage power system, which adopts the following technical solution:

[0007] A grounding knife detection method for a low-voltage power system comprises: comprising at least one group of grounding knives and corresponding main switches, a mechanical interlocking device is arranged between the grounding knives and the main switches, during initialization, reading the initial state data of all grounding knives and main switches, and updating the state record data corresponding to each group of grounding knives and main switches at preset time intervals or when receiving a state change signal; when it is detected that there is a grounding knife or the state of the main switch changes, obtaining the corresponding real-time state data, triggering a logic control algorithm, evaluating the latest state data based on the logic control algorithm, and obtaining the corresponding evaluation result data; judging whether it is allowed based on the evaluation result data, and if so, sending a closing command to the corresponding main switch; otherwise, keeping the current state unchanged, and recording each state change and evaluation result data in a log file.

[0008] By adopting the above technical solution, mechanical interlocking ensures that the main switch can be closed only when the grounding knife is in the disconnected position, fundamentally preventing the risk of misoperation. Combining the dynamic evaluation mechanism of real-time status monitoring and logic control algorithm, this method can quickly respond to and accurately judge any state changes, ensuring that each operation complies with safety regulations. In addition, detailed logging and alarm mechanisms provide a solid basis for troubleshooting and post-audit, further enhancing the transparency and traceability of the system. Through these measures, this method effectively reduces safety hazards caused by human errors or equipment failures, ensures the continuous and reliable operation of the power system, and thus greatly improves the overall operational stability.

[0009] Optionally, the method also includes: obtaining corresponding state change request data each time a state change request is requested for the grounding switch or main switch, and filtering out operations that obviously do not meet the conditions from the state change request data based on a predefined basic rule set; performing multi-level verification on the filtered state change request data, wherein the multi-level verification includes static rule verification, dynamic risk assessment, and historical data comparative analysis; after completing the verification, the logic control algorithm makes a final decision to determine whether to allow the state change, and records each state change and verification results in detail in a log file.

[0010] By adopting the above technical solution, at each state change request, the system first quickly filters out operations that are obviously unqualified based on the predefined basic rule set, avoiding further processing of invalid or dangerous operations. Subsequently, the screened requests are subject to detailed multi-level verification, including static rule verification, dynamic risk assessment, and historical data comparative analysis, to ensure that each change is rigorously evaluated. This multi-level security check not only improves the accuracy of decision-making, but also effectively prevents potential risks. Finally, the logic control algorithm makes a decision on whether to allow the state change based on the verification results, and records all relevant data in detail in the log file, providing a reliable basis for subsequent audits and troubleshooting.

[0011] Optionally, the method also includes: obtaining corresponding state change request data each time a state change request is requested for the grounding switch or main switch, and filtering out operations that obviously do not meet the conditions from the state change request data based on a predefined basic rule set; performing multi-level verification on the filtered state change request data, wherein the multi-level verification includes static rule verification, dynamic risk assessment, and historical data comparative analysis; after completing the verification, the logic control algorithm makes a final decision to determine whether to allow the state change, and records each state change and verification results in detail in a log file.

[0012] By adopting the above technical solution, each time a state change request is made, the system first quickly filters out unqualified operations based on a predefined set of basic rules to prevent invalid or dangerous instructions from entering the subsequent process. Subsequently, the filtered request data is verified at multiple levels, including static rule verification, dynamic risk assessment, and historical data comparison analysis, to ensure that each state change undergoes strict security checks and risk assessments.

[0013] Optionally, the method also includes: real-time monitoring of the state changes of all grounding switches, once it is detected that the grounding switch changes from a closed state to an open state, immediately starting a timer to start calculating the duration of the time window, and the timer runs independently; during the time window, the main switch is logically locked and cannot receive any closing instructions, while continuously monitoring the state of the grounding switch, if the grounding switch is closed again within the time window, the timer is reset and the waiting state is re-entered; when the timer reaches a preset time interval, the logic control algorithm is triggered to conduct a comprehensive assessment of the current system state, if the assessment result complies with the safety rules, the logic lock of the main switch is released to allow it to accept the closing instruction; otherwise, the locked state is maintained, and an alarm is issued to notify relevant personnel to handle abnormal situations, and a comprehensive assessment is conducted including the state of the grounding switch and the safety check of related circuits.

[0014] By adopting the above technical solutions, the safety and operational reliability of the low-voltage power system are significantly improved by introducing a time window mechanism and real-time status monitoring. Once the grounding knife changes from closed to open, the system immediately starts an independent timer and logically locks the main switch to prevent any closing instructions. This mechanism effectively prevents misoperation and ensures the safety of each state change, thereby enhancing the stable operation and safety of the system.

[0015] Optionally, the method also includes: each time a state change occurs, immediately recording the timestamp of the event and the corresponding device identifier, and calculating the number of state changes corresponding to each device within a specified time window; comparing the number of state changes with a preset state change rate threshold, and if the rate exceeds a normal range, marking it as an abnormal situation, and initiating a safety inspection process for the abnormal situation, wherein the safety inspection process includes detailed state verification, environmental parameter analysis, and historical data analysis; if the safety inspection process detects potential risks or confirms the existence of an abnormality, activating the alarm mechanism, sending a notification to the designated terminal, and initiating corresponding corrective measures based on the alarm level and specific circumstances corresponding to the alarm mechanism.

[0016] By adopting the above technical solution, each time the state changes, the system immediately records the timestamp and device identification, and calculates the number of state changes within the specified time window. If the change rate exceeds the preset threshold, the system marks it as abnormal and starts a detailed safety inspection process, including state verification, environmental parameter analysis, and historical data analysis. If potential risks are found or abnormalities are confirmed, the system immediately activates the alarm mechanism, notifies relevant personnel, and initiates corrective measures based on the specific situation. This mechanism effectively identifies and responds to abnormal operating modes, prevents risks caused by frequent state changes, and ensures safe and reliable operation of the system.

[0017] Optionally, the method also includes: when performing an operation, determining a corresponding target operation authority level based on the complexity and potential risks of the task to be operated, wherein each operator is assigned one or more user roles, and each role is bound to a corresponding authority level; before each operation request, determining the operation authority level corresponding to the operator, comparing the operation authority level with the target operation authority level, and if the operation authority level is higher than the target operation authority level, determining the corresponding target operator; if the target operation authority level corresponds to a high-risk operation, the operator is required to perform double confirmation before execution.

[0018] By adopting the above technical solutions, the safety and operational standardization of the low-voltage power system are improved through refined operation authority management. During each operation, the system determines the target operation authority level based on the complexity and risk of the task, and compares it with the actual authority of the operator to ensure that only personnel with sufficient authority can perform the corresponding operation. For high-risk operations, operators are required to perform double confirmation to further reduce the risk of misoperation. This mechanism effectively prevents unauthorized or unauthorized operations, ensures the safety and compliance of each operation, and enhances the overall stability of the system.

[0019] In a second aspect, the present application provides a grounding knife detection system for a low voltage power system, which adopts the following technical solution:

[0020] A grounding knife detection system for a low voltage power system, 7. comprising:

[0021] An initial state data reading module, comprising at least one set of grounding switches and corresponding main switches, wherein a mechanical interlocking device is provided between the grounding switches and the main switches, and is used to read the initial state data of all grounding switches and main switches during initialization, and update the state record data corresponding to each set of grounding switches and main switches at a preset time interval or upon receiving a state change signal;

[0022] An evaluation result data acquisition module, when detecting the presence of a grounding switch or a change in the state of a main switch, acquires corresponding real-time status data, triggers a logic control algorithm, and evaluates the latest status data based on the logic control algorithm to acquire corresponding evaluation result data;

[0023] The permission judgment module is used to judge whether it is allowed based on the evaluation result data. If so, a closing command is sent to the corresponding main switch; otherwise, the current state is kept unchanged, and each state change and evaluation result data are recorded in a log file.

[0024] In a third aspect, the present application provides a grounding knife detection method for a low voltage power system, which adopts the following technical solution:

[0025] A grounding knife detection method for a low-voltage power system comprises a processor, wherein the processor runs a program of any one of the above-mentioned grounding knife detection methods for a low-voltage power system.

[0026] In a fourth aspect, the present application provides a storage medium, which adopts the following technical solution:

[0027] A storage medium stores a program of any one of the above-mentioned grounding switch detection methods for a low-voltage power system.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] The safety and stability of the low-voltage power system are ensured by integrating mechanical interlocking, real-time status monitoring and logic control algorithms. Mechanical interlocking prevents misoperation, and the real-time monitoring and dynamic evaluation mechanism quickly responds to and accurately judges status changes, ensuring that each operation complies with safety regulations. Detailed logging and alarm mechanisms enhance the transparency and traceability of the system, effectively reducing safety hazards caused by human errors and equipment failures, and ensuring the continuous and reliable operation of the power system.

[0030] In addition, the method introduces multi-level verification, time window mechanism and state change rate monitoring to further improve the security of the system. Multi-level verification ensures that each state change undergoes strict security checks, the time window mechanism prevents excessive operation frequency, and the state change rate monitoring promptly identifies abnormal patterns and initiates corrective measures. Refined operation authority management and a double confirmation mechanism for high-risk operations ensure that only authorized personnel can perform key tasks, greatly improving the standardization of operations and the overall stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present invention is a flow chart showing a method for detecting a grounding switch in a low voltage power system according to an exemplary embodiment.

[0032] Figure 2 The figure is a structural block diagram of a grounding switch detection system for a low voltage power system according to an exemplary embodiment. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.

[0034] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0035] The present application embodiment discloses a grounding knife detection method for a low voltage power system, referring to Figure 1 ,include:

[0036] S100, comprising at least one set of grounding switches and corresponding main switches, a mechanical interlocking device is arranged between the grounding switches and the main switches, and during initialization, the initial state data of all grounding switches and main switches are read, and the state record data corresponding to each set of grounding switches and main switches is updated at preset time intervals or when a state change signal is received.

[0037] Among them, in the low-voltage power system, at least one set of grounding knife and corresponding main switch is installed for each circuit or loop that needs to be protected, which can ensure that the physical connection between the grounding knife and the main switch is stable and reliable. A mechanical interlocking device is installed between the grounding knife and the main switch to ensure that there is a physical linkage relationship between the two. The device is designed so that the main switch can only be closed when the grounding knife is in the disconnected position; this is achieved through a mechanical structure (such as a connecting rod, gear, etc.) to ensure that any attempt to bypass this mechanism will be blocked.

[0038] After installation, the mechanical interlock is fully tested, including simulating various operating scenarios to ensure it functions properly under all conditions, and the test results are recorded.

[0039] During initialization, the specific execution process includes:

[0040] 1. When the system is started or reinitialized, the control system first scans and reads the current status of all grounding switches and main switches. This status information includes but is not limited to position (closed / open), voltage level, current load, etc.

[0041] 2. Store the acquired initial state data in a database or local cache to establish the initial state baseline of the system. Ensure that the data storage format is unified and easy to process later.

[0042] 3. Set a preset time interval (such as every second or every minute) to regularly check and update the status data of all grounding switches and main switches. In addition, an event-driven approach is adopted to immediately trigger the status update process once any status change is detected (such as the position change of the grounding switch or main switch).

[0043] 4. Every time the status data is updated, ensure that the status information between all monitoring nodes is consistent to avoid operational errors caused by information asynchrony. Perform status consistency checks regularly and issue alarms in a timely manner when abnormalities are found.

[0044] S110, when it is detected that there is a grounding switch or the main switch state changes, the corresponding real-time state data is obtained, and the logic control algorithm is triggered, and the latest state data is evaluated based on the logic control algorithm to obtain the corresponding evaluation result data.

[0045] Among them, the system continuously monitors the status of all grounding switches and main switches. Once a state change is detected (such as from closed to open), the occurrence time and specific change content of the event are immediately captured; it is necessary to immediately obtain the latest status data for the equipment where the state change occurs. The status data includes but is not limited to key parameters such as position, voltage, and current to ensure the accuracy and timeliness of the data.

[0046] Once a state change is detected, the logic control algorithm is immediately triggered. The logic control algorithm is responsible for evaluating the latest state data to determine whether the corresponding operation (such as closing the main switch) is allowed. The logic control algorithm runs in an independent task environment to ensure that it is not interfered with by other operations.

[0047] In addition, the logic control algorithm first performs a preliminary verification of the latest status data according to a predefined set of safety rules to ensure that there are no violations of basic safety regulations (such as not allowing the circuit breaker to be closed when the grounding switch is not disconnected); combined with real-time environmental parameters (such as temperature, humidity, load conditions) and system operating status, the safety inspection standards and thresholds are dynamically adjusted to evaluate the risk level of operations in the current state.

[0048] Historical operation records and fault case libraries can be used to compare current status data, identify potential risk patterns or abnormal behaviors, and provide early warning of possible problems. The evaluation results can be finally obtained through multi-level verification steps. If all verifications pass, it is judged to be safe; otherwise, it is marked as abnormal.

[0049] S120, judging whether it is allowed based on the evaluation result data, and if so, sending a closing command to the corresponding main switch; otherwise, keeping the current state unchanged, and recording each state change and evaluation result data in a log file.

[0050] The logic control algorithm generates a final decision based on the evaluation results. If the evaluation results show that the operation is safe, an instruction to allow the operation is generated; otherwise, an instruction to reject the operation is generated. For the allowed operation, a closing instruction is sent to the corresponding main switch and confirmation feedback is waited for; for the rejected operation, the current state is maintained unchanged and the operator is notified. For high-risk operations, the system automatically locks the relevant equipment to prevent unauthorized operations. Only when all conditions are met and verified can the lock state be released and the operation can be allowed.

[0051] Finally, each state change and its evaluation results are recorded in detail in the log file, including the operation timestamp, the device identification involved, the state change details, the evaluation results, etc. The log entries are classified and marked according to the operation type and importance to facilitate subsequent query and analysis, and high-risk operations and abnormal situations are specially marked.

[0052] By integrating mechanical interlocking, real-time monitoring, intelligent logic control, multi-level verification, time window mechanism and refined authority management, this method significantly improves the safety and stability of low-voltage power systems. It ensures that the main switch can only be closed when the grounding knife is disconnected to prevent misoperation; combined with a dynamic evaluation mechanism to quickly respond to state changes, ensure that each operation complies with safety regulations; detailed logging and alarm mechanisms enhance the transparency and traceability of the system; multi-level verification and time window mechanisms prevent potential risks; and authority management reduces human errors and enhances the standardization and safety of operations. In summary, this method significantly reduces safety hazards and ensures the continuous and reliable operation of the power system and the safety compliance of operations.

[0053] In an embodiment of the present application, the method further includes:

[0054] S1211, when a state change request is made for the grounding switch or the main switch, corresponding state change request data is obtained, and operations that obviously do not meet the conditions are filtered out from the state change request data based on a predefined basic rule set.

[0055] The system monitors the status of all grounding switches and main switches in real time. Once a status change request is detected (for example, an operator attempts to change the status of a device), the event is captured immediately. Status change request data includes but is not limited to: the operator's identity information, the type of operation requested (such as closing, disconnecting), the timestamp of the request, the device identification involved (such as the ID of the grounding switch or main switch), and the current environmental parameters (such as temperature, humidity, and load conditions). The captured status change request data also needs to be preliminarily sorted and formatted to ensure the consistency and accuracy of subsequent processing, for example, converting the timestamp to a unified format and parsing the device identification into a system internal identification code.

[0056] In addition, a set of basic rules is predefined and stored, which covers all common and explicitly disallowed state change conditions. For example, the main switch is not allowed to be closed when the grounding knife is not disconnected, no state change is allowed when the equipment is in a fault state, and high-risk operations are prohibited within a specific time period.

[0057] After receiving a status change request, the request data is first quickly screened based on the above basic rule set. This step is to quickly exclude operations that are obviously not in compliance with the conditions and prevent invalid or dangerous instructions from entering the subsequent process. For requests that are screened out and do not meet the conditions, the system immediately provides instant feedback to the operator and records the detailed reasons for rejection in the log file for subsequent audit and responsibility tracing.

[0058] S1212, performing multi-level verification on the filtered status change request data.

[0059] Among them, multi-level verification includes static rule verification, dynamic risk assessment, and historical data comparison and analysis; specifically, static rule verification: for state change requests that have passed the initial screening, static rule verification is further applied. This step ensures that all operations meet fixed and immutable safety standards. For example: verify whether the operation violates the physical interlocking mechanism and confirm whether the operation exceeds the rated parameter range of the equipment.

[0060] Dynamic risk assessment: Combine real-time environmental parameters (such as temperature, humidity, load conditions) and system operation status to dynamically adjust the standards and thresholds for security checks and assess the risk level of operations in the current state. For example, if the ambient temperature is too high, more stringent security checks may be required, and if the system load is close to the upper limit, special attention should be paid to high-risk operations.

[0061] Historical data analysis: Use historical operation records and fault case libraries to compare current status change requests, identify potential risk patterns or abnormal behaviors, and provide early warning of possible problems. For example: analyze historical results of similar operations, predict possible results, and compare past fault cases to identify whether there are similar risk factors.

[0062] S1213, after completing the verification, the logic control algorithm makes a final decision to determine whether to allow the state change, and records each state change and verification result in detail in the log file.

[0063] The logic control algorithm combines the results of static rule verification, dynamic risk assessment, and historical data analysis to make a final assessment. If all verifications pass, it is judged to be safe; otherwise, it is marked as abnormal. Based on the assessment results, the logic control algorithm generates a final decision. If the assessment results show that the operation is safe, an instruction to allow the operation is generated; otherwise, an instruction to reject the operation is generated. For allowed operations, a closing instruction is sent to the corresponding main switch and confirmation feedback is waited for. For rejected operations, the current state remains unchanged and the operator is notified.

[0064] Through efficient screening mechanisms, multi-level verification, intelligent decision support and detailed logging, the safety and stability of low-voltage power systems have been significantly improved. It ensures that only qualified operations can be carried out, effectively preventing potential risks, and ensures the timeliness and accuracy of status changes through real-time monitoring and priority task scheduling.

[0065] In addition, the method includes:

[0066] S1221, monitor the status changes of all grounding switches and main switches in real time. When deciding to allow the status change, immediately capture and record the corresponding target status change data when the status change of the grounding switch and the main switch occurs.

[0067] Among them, in the embodiment of the present application, the system adopts a high-frequency state polling mechanism to regularly check the current state of all grounding switches and main switches, and the polling frequency is specific. In addition to timed polling, the system also supports event-driven monitoring. Through hardware interrupts or sensor feedback, once any state change is detected (such as the grounding switch changes from closed to open), the state change processing flow is immediately triggered to reduce response delays.

[0068] In addition, when the logic control algorithm decides to allow the state change, the system immediately starts the real-time capture mechanism to ensure that the relevant data is accurately recorded at the moment the state change occurs. To ensure that the captured data is complete and correct, the system adds a verification mechanism during the capture process, such as CRC verification or hash verification, to prevent data transmission errors or losses.

[0069] S1222: Determine the target state change data as the highest priority task.

[0070] Among them, a task priority scheduling algorithm is implemented in the central control system. Whenever state change data is captured, it is immediately promoted to the highest priority task, which means that the task will obtain the highest priority processing right in the system resource allocation to ensure that the state change operation can be executed in time; the necessary system resources (such as CPU time slices, memory space, etc.) are reserved for the highest priority tasks to ensure that these tasks will not be delayed due to resource competition. For example, a dedicated processing thread or queue is set up specifically for processing state change tasks.

[0071] S1223: Based on the highest priority task, control the grounding switch and the main switch to perform corresponding state changes.

[0072] Among them, accurate operation instructions are generated based on the captured target state change data and immediately sent to the corresponding grounding knife and main switch. The instruction content includes the operation type (such as closing, opening) and necessary safety parameters (such as voltage and current limit).

[0073] After sending the command, wait for the target device to return a confirmation signal to ensure that the command has been successfully received and executed. If no confirmation is received within the preset time, the system will resend the command or take other remedial measures. At the same time, a status feedback loop is established to continuously monitor the status changes of the target device until the status change is confirmed to be the expected result. If any abnormality is found during the process, the operation will be stopped immediately and the alarm mechanism will be triggered to notify relevant personnel to handle it.

[0074] Based on the execution of the above steps S1221 to S1223, the response speed and operational reliability of the low-voltage power system are significantly improved through real-time monitoring and instant capture, scheduling of the highest priority tasks, precise control and feedback, and enhanced reliability and traceability. It ensures the timely capture and processing of state changes, avoids operational failures caused by resource competition and network delays, and enhances the stability and security of the system through precise control and detailed logging.

[0075] The time window in the embodiment of the present application is described in detail below, so the method also includes:

[0076] S1231, monitor the state changes of all grounding switches in real time. Once it is detected that the grounding switch changes from a closed state to an open state, a timer is immediately started to start calculating the duration of the time window, and the timer runs independently.

[0077] Among them, once it is detected that the grounding knife changes from a closed state to an open state, the system immediately starts an independently running timer, which is not affected by other operations to ensure accurate timing; the preset time interval is determined according to safety standards and operating procedures, and can be adjusted through the configuration interface. The timer starts to calculate the duration of the time window until the preset time interval is reached.

[0078] S1232: During the time window, the main switch is logically locked and cannot receive any closing command. At the same time, the status of the grounding switch is continuously monitored. If the grounding switch is closed again within the time window, the timer is reset and the waiting state is re-entered.

[0079] During the time window, the system automatically locks the main switch logic to ensure that it cannot receive any closing instructions. This is achieved through software control to prevent unauthorized operations. During this period, the system continuously monitors the status of the grounding knife to ensure that any new status changes within the time window can be captured and processed in time.

[0080] During the time window, if the grounding switch is detected to be closed again, the system immediately captures the event, resets the timer, cancels the current time window, and re-enters the waiting state to prepare for the next state change.

[0081] S1233, when the timer reaches the preset time interval, the logic control algorithm is triggered to conduct a comprehensive assessment of the current system status. If the assessment result complies with the safety rules, the logic lock of the main switch is released to allow it to accept the closing command; otherwise, the lock state is maintained, and an alarm is issued to notify relevant personnel to deal with abnormal situations. A comprehensive assessment includes the grounding switch status and safety checks of related circuits.

[0082] When the timer reaches the preset time interval, the system triggers the logic control algorithm to conduct a comprehensive assessment of the overall status of the current system. Comprehensive assessment content: The assessment includes but is not limited to: the status of the grounding switch, the safety check of related circuits, and real-time environmental parameters (such as temperature, humidity, and load conditions).

[0083] In addition, the logic control algorithm generates a final decision based on the evaluation results. If the evaluation results show that the operation is safe, the logic lock of the main switch is released to allow it to accept the closing command. For the allowed operation, the closing command is sent to the corresponding main switch and confirmation feedback is waited for. For the rejected operation, the current state is maintained unchanged and the operator is notified. If the evaluation result does not meet the safety rules, the system maintains the logic lock state of the main switch, activates the alarm mechanism, and sends a notification to the designated terminal to remind relevant personnel to handle the abnormal situation.

[0084] Based on the execution steps from S1231 to S1233, the safety and reliability of the low-voltage power system are significantly improved by introducing a time window mechanism and real-time status monitoring. Once the grounding knife changes from closed to open, the system immediately starts an independent timer and logically locks the main switch to prevent any closing command.

[0085] For the time window, you also need to pay attention to the corresponding number of state changes, so the method also includes:

[0086] S1241, when each state change occurs, immediately record the timestamp of the event and the corresponding device identification, and calculate the number of state changes corresponding to each device within the specified time window.

[0087] When the system detects any state change (such as the closing / opening of the grounding knife or main switch), it immediately captures and records the event. The record content includes: operation timestamp, unique identifier of the device involved (such as device ID), and specific state before and after the state change (such as from closed to open).

[0088] All state change events are stored in a high-performance database and efficiently indexed for quick query and analysis. The system calculates the number of state changes for each device within a specified time window (e.g., every minute, every hour). The sliding window algorithm dynamically updates the number of state changes for each device within the current time window to ensure the timeliness and accuracy of the data.

[0089] S1242, compare the number of state changes with a preset state change rate threshold. If the rate exceeds a normal range, mark it as an abnormal situation and start a safety inspection process for the abnormal situation.

[0090] Among them, the state change rate threshold of each device is pre-set based on historical data, operating procedures and safety standards. The system continuously monitors the number of state changes of each device and compares it with the preset threshold in real time. Once the number of state changes of a device exceeds the normal range, it is immediately marked as an abnormal situation. For the marked abnormal situation, the system generates a detailed abnormal report and sends an immediate notification to the relevant operators to remind them of potential risks.

[0091] Once the state change rate is detected to exceed the preset threshold, the system immediately starts the safety check process. This process aims to comprehensively evaluate the safety of the current system to ensure that there are no potential risks. The safety check process includes detailed state verification, environmental parameter analysis and historical data analysis.

[0092] Specifically, detailed status verification: conduct a comprehensive status verification of the equipment involved to ensure that all key parameters (such as voltage, current, temperature, etc.) are within the normal range. If any abnormality is found, record it immediately and further analyze it; environmental parameter analysis: combine real-time environmental parameters (such as temperature, humidity, load conditions) to evaluate whether the current operating conditions may cause abnormal status changes. This helps to identify potential environmental influencing factors; historical data analysis: use historical operation records and fault case libraries to compare the current status change mode and identify whether there are similar historical abnormalities.

[0093] S1243, if the security check process detects potential risks or confirms that there are abnormalities, the alarm mechanism is activated, a notification is sent to the designated terminal, and corresponding corrective measures are initiated according to the alarm level and specific circumstances corresponding to the alarm mechanism.

[0094] Among them, the safety inspection process integrates the results of static rule verification, dynamic risk assessment and historical data analysis to evaluate the risk level of the current operation. If potential risks are found or abnormalities are confirmed, an alarm is immediately generated; the system activates the alarm mechanism and sends a notification to the designated terminal (such as an operator workstation, mobile device). The notification content includes but is not limited to: the identification of abnormal equipment, a specific description of the abnormal situation, and recommended corrective measures. In addition, different response strategies are adopted according to the alarm level corresponding to the alarm mechanism (such as low, medium, and high); for example, a high-level alarm may require immediate suspension of certain operations or entry into emergency maintenance mode.

[0095] In addition, depending on the alarm level and specific circumstances, the system automatically or manually recommends appropriate corrective actions. These measures may include: suspending specific operations, limiting certain functions, and entering maintenance mode.

[0096] The system sends specific corrective instructions to the relevant equipment or operators and waits for confirmation feedback to ensure that all corrective measures are implemented in a timely manner and record detailed implementation results. After completing the corrective measures, the system continues to monitor the status of the relevant equipment to ensure that the problem has been effectively resolved; at the same time, it uses machine learning algorithms to continuously optimize threshold settings and response strategies to improve the system's adaptive capabilities.

[0097] Based on the execution steps from S1241 to S1243 above, the safety and reliability of the low-voltage power system are significantly improved by real-time monitoring of the state change rate and initiating the safety inspection process when it exceeds the preset threshold. It can not only identify abnormal operation modes in a timely manner, but also warn of potential risks in advance through detailed verification and historical data analysis, and ensure the stable operation of the system through alarm mechanisms and corrective measures.

[0098] The method also includes:

[0099] S1251, when performing an operation, determine the corresponding target operation authority level based on the complexity and potential risks of the task to be operated.

[0100] Different types of operation tasks are predefined in the system and classified according to their complexity and potential risks. For example, low-risk tasks may include routine status inquiries, while high-risk tasks involve key operations such as closing the main switch or closing the earthing knife. A target operation authority level (such as elementary, intermediate, and advanced) is assigned to each operation task category. These authority levels reflect the safety and skill requirements required to perform the task. In addition, based on real-time environmental parameters (such as load conditions, temperature) or special operating conditions (such as emergency maintenance), the system can dynamically adjust the risk level and corresponding authority level of certain tasks to ensure flexibility and adaptability.

[0101] The system maintains a user role library, each of which is bound to a specific permission level. For example, a "general technician" may have entry-level permissions, while a "senior engineer" or "security administrator" has advanced permissions. One or more user roles are assigned to each operator during system initialization or periodic review. These roles can be assigned based on the operator's job responsibilities, training level, and certification status, and can be dynamically updated to reflect the latest work arrangements and security requirements. If an operator has multiple roles, his or her permission level is the highest among all roles.

[0102] S1252, before each operation request, determine the operation authority level corresponding to the operator, compare the operation authority level with the target operation authority level, and if the operation authority level is higher than the target operation authority level, determine the corresponding target operator.

[0103] Before each operation request, the system first performs identity authentication to confirm the identity information of the operator, and then retrieves the operator's current role and its bound permission level from the user role library. The operator's permission level is compared with the target operation permission level of the task to be performed to ensure that the operator has sufficient permissions to perform the task. If the operator's permission level is not sufficient to perform the task, the system immediately provides instant feedback, informs the operator of the specific reason, and recommends contacting a colleague or administrator with higher permissions.

[0104] When the operator's authority level is higher than or equal to the target operation authority level, the system confirms the operator as the target operator and allows him to proceed to the next step; for tasks that require collaboration among multiple people, the system can automatically select qualified operators and generate a task authorization list to ensure that each operation has a clear person in charge.

[0105] S1253: If the target operation authority level corresponds to a high-risk operation, the operator must perform double confirmation before execution.

[0106] For operational tasks marked as high risk, the system starts a double confirmation mechanism. This usually includes the following steps:

[0107] Initial confirmation: The operator performs initial confirmation by entering a password or biometric information to indicate his / her intention to perform the operation; Second confirmation: The system prompts the operator to confirm the necessity and security of the operation again, and may require entering an additional verification code or pressing a physical button to confirm.

[0108] To further improve security, the system can combine multiple verification methods, such as SMS verification code, hardware token or fingerprint recognition, to ensure that only strictly verified operators can perform high-risk operations. Through refined operation authority management and double confirmation mechanism, the safety and operation standardization of low-voltage power systems are significantly improved. It ensures that each operation is performed by personnel with sufficient authority, especially for high-risk tasks, and prevents misoperation through strict double confirmation. This mechanism effectively reduces the possibility of unauthorized or unauthorized operations, ensures the safe and reliable operation of the system, and enhances the compliance and stability of operations.

[0109] The present application embodiment discloses a grounding knife detection system for a low voltage power system, referring to Figure 2 , the system includes but is not limited to:

[0110] The initial state data reading module 200 comprises at least one set of grounding switches and corresponding main switches, and a mechanical interlocking device is arranged between the grounding switches and the main switches. During initialization, the module is used to read the initial state data of all grounding switches and main switches, and update the state record data corresponding to each set of grounding switches and main switches at a preset time interval or when a state change signal is received;

[0111] The evaluation result data acquisition module 210 acquires corresponding real-time status data when a grounding switch or a main switch status change is detected, and triggers a logic control algorithm to evaluate the latest status data based on the logic control algorithm to acquire corresponding evaluation result data;

[0112] The permission judgment module 220 is used to judge whether it is allowed based on the evaluation result data. If so, a closing command is sent to the corresponding main switch; otherwise, the current state is kept unchanged, and each state change and evaluation result data are recorded in a log file.

[0113] Furthermore, the system includes but is not limited to:

[0114] A state change request data acquisition module, for acquiring corresponding state change request data each time a state change request is requested for the grounding switch or the main switch, and filtering the state change request data to select operations that obviously do not meet the conditions based on a predefined basic rule set;

[0115] The multi-level verification module is used to perform multi-level verification on the filtered status change request data, where the multi-level verification includes static rule verification, dynamic risk assessment, and historical data comparison analysis;

[0116] Change Decision Module,After the verification is completed, the logic control algorithm is used to make the final decision to decide whether the state change is allowed, and each state change and verification results are recorded in detail in the log file.

[0117] Furthermore, the system includes but is not limited to:

[0118] The target state change data recording module monitors the state changes of all grounding switches and main switches in real time. When deciding to allow state changes, the state changes of grounding switches and main switches are immediately captured and used to record the corresponding target state change data;

[0119] A highest priority task determination module, used to determine the target state change data as the highest priority task;

[0120] The state change control module is used to control the grounding switch and the main switch to perform corresponding state changes based on the highest priority task.

[0121] Furthermore, the system includes but is not limited to:

[0122] Monitor the status changes of all grounding switches in real time. Once the grounding switch is detected to change from closed to open, a timer is immediately started to calculate the duration of the time window, and the timer runs independently.

[0123] During the time window, the main switch is logically locked and cannot receive any closing command. At the same time, the state of the grounding switch is continuously monitored. If the grounding switch is closed again within the time window, the timer is reset and the waiting state is re-entered;

[0124] When the timer reaches the preset time interval, the logic control algorithm is triggered to conduct a comprehensive assessment of the current system status. If the assessment result meets the safety rules, the logic lock of the main switch is released to allow it to accept the closing command; otherwise, the lock state is maintained and an alarm is issued to notify relevant personnel to deal with abnormal situations. A comprehensive assessment includes the status of the grounding knife and the safety check of related circuits.

[0125] Furthermore, the system includes but is not limited to:

[0126] The state change count calculation module immediately records the timestamp and corresponding device ID of each state change, and uses it to calculate the corresponding state change count of each device within a specified time window;

[0127] An abnormal situation marking module compares the number of state changes with a preset state change rate threshold. If the rate exceeds the normal range, it is used to mark it as an abnormal situation and start a safety inspection process for the abnormal situation, wherein the safety inspection process includes detailed state verification, environmental parameter analysis and historical data analysis;

[0128] The alarm mechanism activation module is used to activate the alarm mechanism if the security check process detects potential risks or confirms the existence of abnormalities, send notifications to the designated terminals, and initiate corresponding corrective measures based on the alarm level and specific circumstances corresponding to the alarm mechanism.

[0129] Furthermore, the system includes but is not limited to:

[0130] The target operation permission level determination module is used to determine the corresponding target operation permission level based on the complexity and potential risk of the task to be operated when performing an operation, wherein each operator is assigned one or more user roles, and each role is bound to a corresponding permission level;

[0131] The authority comparison module determines the operation authority level corresponding to the operator before each operation request, and is used to compare the operation authority level with the target operation authority level. If the operation authority level is higher than the target operation authority level, the corresponding target operator is determined;

[0132] If the target operation authority level corresponds to a high-risk operation, the operator must perform double confirmation before execution.

[0133] An embodiment of the present application further discloses a grounding knife detection method for a low-voltage power system, comprising a processor, wherein the program of any one of the above-mentioned grounding knife detection methods for a low-voltage power system is running on the processor.

[0134] The embodiment of the present application further discloses a storage medium storing a program of any one of the above-mentioned grounding switch detection methods for a low-voltage power system.

[0135] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A grounding knife detection method for a low voltage power system, characterized in that: include: It comprises at least one set of grounding switches and corresponding main switches, and a mechanical interlocking device is arranged between the grounding switches and the main switches. During initialization, the initial state data of all grounding switches and main switches are read, and the state record data corresponding to each set of grounding switches and main switches is updated at preset time intervals or when a state change signal is received; When a grounding switch is detected or the state of the main switch changes, the corresponding real-time state data is obtained, and a logic control algorithm is triggered. The latest state data is evaluated based on the logic control algorithm to obtain corresponding evaluation result data; Based on the evaluation result data, determine whether it is allowed. If so, send a closing command to the corresponding main switch; otherwise, keep the current state unchanged, and record each state change and evaluation result data in the log file.

2. The grounding switch detection method for a low voltage power system according to claim 1, characterized in that: The method also includes: When the grounding switch or main switch status is requested to change each state, the corresponding state change request data is obtained, and the state change request data is filtered out based on a predefined basic rule set to identify operations that obviously do not meet the conditions; Perform multi-level verification on the filtered status change request data, including static rule verification, dynamic risk assessment, and historical data comparison and analysis; After verification, the logic control algorithm makes a final decision to determine whether to allow the state change, and records each state change and verification results in detail in the log file.

3. The grounding switch detection method for a low voltage power system according to claim 2, characterized in that: The method also includes: Monitor the status changes of all grounding switches and main switches in real time. When deciding to allow status changes, immediately capture and record the corresponding target status change data when the status changes of grounding switches and main switches occur. Determining the target state change data as a highest priority task; Based on the highest priority task, the grounding switch and the main switch are controlled to perform corresponding state changes.

4. The grounding switch detection method for a low voltage power system according to claim 1, characterized in that: The method also includes: Monitor the status changes of all grounding switches in real time. Once the grounding switch is detected to change from closed to open, a timer is immediately started to calculate the duration of the time window, and the timer runs independently. During the time window, the main switch is logically locked and cannot receive any closing command. At the same time, the state of the grounding switch is continuously monitored. If the grounding switch is closed again within the time window, the timer is reset and the waiting state is re-entered; When the timer reaches the preset time interval, the logic control algorithm is triggered to conduct a comprehensive assessment of the current system status. If the assessment result meets the safety rules, the logic lock of the main switch is released to allow it to accept the closing command; otherwise, the lock state is maintained and an alarm is issued to notify relevant personnel to deal with abnormal situations. A comprehensive assessment includes the status of the grounding knife and the safety check of related circuits.

5. The grounding switch detection method for a low voltage power system according to claim 1, characterized in that: The method also includes: When each state change occurs, the timestamp of the event and the corresponding device ID are recorded immediately, and the number of state changes corresponding to each device within the specified time window is calculated; Compare the number of state changes with a preset state change rate threshold. If the rate exceeds a normal range, mark it as an abnormal situation and initiate a safety inspection process for the abnormal situation, wherein the safety inspection process includes detailed state verification, environmental parameter analysis, and historical data analysis; If the security check process detects potential risks or confirms an abnormality, the alarm mechanism will be activated and a notification will be sent to the designated terminal. The corresponding corrective measures will be initiated according to the alarm level and specific circumstances corresponding to the alarm mechanism.

6. The grounding switch detection method for a low voltage power system according to claim 1, characterized in that: The method also includes: When performing an operation, the corresponding target operation authority level is determined based on the complexity and potential risks of the task to be operated, wherein each operator is assigned one or more user roles, and each role is bound to a corresponding authority level; Before each operation request, determine the operation authority level corresponding to the operator, compare the operation authority level with the target operation authority level, and if the operation authority level is higher than the target operation authority level, determine the corresponding target operator; If the target operation authority level corresponds to a high-risk operation, the operator must perform double confirmation before execution.

7. A grounding knife detection system for a low voltage power system, characterized in that: include: An initial state data reading module, comprising at least one set of grounding switches and corresponding main switches, wherein a mechanical interlocking device is provided between the grounding switches and the main switches, and is used to read the initial state data of all grounding switches and main switches during initialization, and update the state record data corresponding to each set of grounding switches and main switches at a preset time interval or upon receiving a state change signal; An evaluation result data acquisition module, when detecting the presence of a grounding switch or a change in the state of a main switch, acquires corresponding real-time status data, triggers a logic control algorithm, and evaluates the latest status data based on the logic control algorithm to acquire corresponding evaluation result data; The permission judgment module is used to judge whether it is allowed based on the evaluation result data. If so, a closing command is sent to the corresponding main switch; otherwise, the current state is kept unchanged, and each state change and evaluation result data are recorded in a log file.

8. A grounding knife detection method for a low voltage power system, characterized in that: The method comprises a processor, wherein a program of a grounding switch detection method for a low-voltage power system as claimed in any one of claims 1 to 6 is run in the processor.

9. A storage medium, characterized in that: A program for a grounding switch detection method for a low-voltage power system as claimed in any one of claims 1 to 6 is stored.

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