Fault-tolerant control method and device for relay protection device, equipment and storage medium
By introducing artificial intelligence algorithms into relay protection devices to identify and correct deviations in actions, and switching to backup strategies or devices when necessary, the problem of insufficient adaptability and intelligence of existing devices is solved, thereby improving the stability and intelligence of the power system.
Patent Information
- Application Number
- CN202511011831.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-22
- Publication Date
- 2025-11-14
AI Technical Summary
Existing relay protection devices are prone to inaccurate judgments under conditions such as load fluctuations, system transient changes, or equipment aging. They lack flexibility and adaptability, rely on manual intervention, have slow processing speeds, and lack intelligent analysis and fault-tolerant functions, thus affecting the stability of the power system.
Artificial intelligence algorithms are used to identify the actions of relay protection devices, determine whether there are deviations, identify the type of deviation through behavior pattern matching strategy, determine the target protection strategy for correction, monitor whether there are deviations in the actions after correction, and if so, activate the fault-tolerant control strategy to switch to the backup protection strategy or device to ensure system stability.
It improves the accuracy and intelligence of relay protection devices under dynamic operating conditions, reduces the occurrence rate of abnormal situations, ensures the safety and stability of the power system, and enhances the system's adaptability and intelligence level through automatic correction and fault-tolerant control mechanisms.
Smart Images
Figure CN120955561A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the fields of power system automation and relay protection technology, and in particular to a fault-tolerant control method, device, equipment and storage medium for a relay protection device. Background Technology
[0002] In power systems, relay protection devices are responsible for detecting faults in power equipment and issuing disconnection commands to ensure the safe and stable operation of the power grid. However, existing relay protection devices still have problems, especially under conditions of load fluctuations, system transient changes, or equipment aging. Traditional relay protection devices are prone to inaccurate judgments, which in turn affect the stability of the power system.
[0003] Currently, the optimization of relay protection devices is mostly based on static algorithms and manual parameter tuning, lacking flexibility and adaptability. The judgment and correction of abnormal protection actions rely on manual intervention, resulting in slow processing speeds and a high risk of system malfunctions. Existing technologies fail to fully utilize artificial intelligence, lacking intelligent analysis and automatic correction mechanisms for real-time behavior, and also lack effective fault-tolerance features to ensure the continuous stability of the system.
[0004] Therefore, how to improve the adaptability and intelligence of relay protection devices and enhance the system's ability to handle abnormal situations by introducing artificial intelligence technology has become an urgent technical problem to be solved. Summary of the Invention
[0005] This application provides a fault-tolerant control method, apparatus, device, and storage medium for relay protection devices to solve the problems of poor adaptability and low intelligence of current relay protection devices.
[0006] The first aspect of this application provides a fault-tolerant control method for a relay protection device, comprising the following steps: identifying the current relay protection action of the current relay protection device based on a preset artificial intelligence algorithm, and determining whether the current relay protection action has an action deviation; if the current relay protection action has an action deviation, identifying the action deviation type of the current relay protection action based on a preset behavior pattern matching strategy, determining the target protection strategy of the current relay protection action according to the action deviation type, correcting the current relay protection action using the target protection strategy, and monitoring whether the corrected relay protection action has the action deviation; if the corrected relay protection action has the action deviation, activating a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device.
[0007] Optionally, determining whether there is an action deviation in the current relay protection action includes: using a preset artificial intelligence algorithm to determine whether the current relay protection action is consistent with the corresponding preset action threshold; if the current relay protection action is inconsistent with the corresponding preset action threshold, then it is determined that the current relay protection action has the action deviation.
[0008] Optionally, the step of identifying the action deviation type of the current relay protection action based on a preset behavior pattern matching strategy, and determining the target protection strategy for the current relay protection action based on the action deviation type, includes: determining the current action deviation type by matching the current relay protection action with fault modes in a preset knowledge base, and determining at least one protection strategy corresponding to the current action deviation type in the preset knowledge base; evaluating the score of each protection strategy, and taking the protection strategy with the highest score among the at least one protection strategy as the target protection strategy for the current relay protection action, and taking the remaining protection strategies among the at least one protection strategy as backup protection strategies.
[0009] Optionally, after selecting the protection strategy with the highest score among the at least one protection strategy as the target protection strategy, the process includes: adjusting the action parameters of the relay protection action based on the target protection strategy; monitoring whether the action deviation exists in the corrected relay protection action within a preset time; and if the corrected relay protection action does not have the action deviation, then continuing to use the corrected relay protection action for relay protection.
[0010] Optionally, if the corrected relay protection action has the aforementioned action deviation, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device, including: if the corrected relay protection action meets a preset protection action failure condition, the target protection strategy is switched to the backup protection strategy for relay protection, and a first alarm signal is sent to the preset terminal; if the corrected relay protection action meets a preset malfunction condition, the current relay protection device is isolated, and a second .... If an abnormal operating condition is detected, the current relay protection device will be switched to the backup protection device for relay protection, and a third alarm signal will be sent to the preset terminal. If the corrected relay protection action meets the preset electrical parameter over-limit conditions, the target protection strategy will be switched to the backup protection strategy for relay protection, and a fourth alarm signal will be sent to the preset terminal. If the corrected relay protection action meets the preset multi-level protection failure conditions, the target protection strategy will be switched to the backup protection strategy for relay protection, and a fifth alarm signal will be sent to the preset terminal.
[0011] Optionally, when initiating a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the following steps are included: if a user's control command is detected, then exit the fault-tolerant control of the current relay protection device and perform control based on the user's control command.
[0012] Optionally, after activating the preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the method further includes: obtaining the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device; generating an event log based on the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device, and uploading it to the preset terminal; and updating the preset knowledge base according to the correction result and the fault-tolerant control result, so as to perform action correction and fault-tolerant control based on the updated knowledge base.
[0013] A second aspect of this application provides a fault-tolerant control device for a relay protection device, comprising: an identification module, configured to identify the current relay protection action of the current relay protection device based on a preset artificial intelligence algorithm, and determine whether the current relay protection action has an action deviation; a correction module, configured to, if the current relay protection action has an action deviation, identify the action deviation type of the current relay protection action based on a preset behavior pattern matching strategy, determine the target protection strategy of the current relay protection action according to the action deviation type, correct the current relay protection action using the target protection strategy, and monitor whether the corrected relay protection action has the action deviation; and a control module, configured to, if the corrected relay protection action has the action deviation, activate a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device.
[0014] Optionally, the identification module is further configured to: use a preset artificial intelligence algorithm to determine whether the current relay protection action is consistent with the corresponding preset action threshold; if the current relay protection action is inconsistent with the corresponding preset action threshold, then determine that the current relay protection action has the action deviation.
[0015] Optionally, the correction module is further configured to: determine the current action deviation type based on the fault modes in the preset knowledge base matched with the current relay protection action, and determine at least one protection strategy corresponding to the current action deviation type in the preset knowledge base; evaluate the score of each protection strategy, and take the protection strategy with the highest score among the at least one protection strategy as the target protection strategy for the current relay protection action, and take the remaining protection strategies among the at least one protection strategy as backup protection strategies.
[0016] Optionally, after selecting the protection strategy with the highest score among the at least one protection strategy as the target protection strategy, the correction module is further configured to: adjust the action parameters of the relay protection action based on the target protection strategy; monitor whether the action deviation exists in the corrected relay protection action within a preset time; if the corrected relay protection action does not have the action deviation, then continue to use the corrected relay protection action for relay protection.
[0017] Optionally, the control module is further configured to: if the corrected relay protection action meets a preset protection action failure condition, switch the target protection strategy to the backup protection strategy for relay protection and send a first alarm signal to the preset terminal; if the corrected relay protection action meets a preset maloperation condition, isolate the current relay protection device and send a second alarm signal to the preset terminal; if the corrected relay protection action meets a preset abnormal operating condition, switch the current relay protection device to the backup protection device for relay protection and send a third alarm signal to the preset terminal; if the corrected relay protection action meets a preset electrical parameter over-limit condition, switch the target protection strategy to the backup protection strategy for relay protection and send a fourth alarm signal to the preset terminal; if the corrected relay protection action meets a preset multi-level protection failure condition, switch the target protection strategy to the backup protection strategy for relay protection and send a fifth alarm signal to the preset terminal.
[0018] Optionally, when the preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device, the control module is further configured to: if a user's control command is detected, exit the fault-tolerant control on the current relay protection device and perform control based on the user's control command.
[0019] Optionally, after activating the preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the control module is further configured to: obtain the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device; generate an event log based on the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device, and upload it to the preset terminal; and update the preset knowledge base according to the correction result and the fault-tolerant control result, so as to perform action correction and fault-tolerant control according to the updated knowledge base.
[0020] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the fault-tolerant control method for a relay protection device as described in the above embodiments.
[0021] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the fault-tolerant control method for a relay protection device as described in the above embodiments.
[0022] In the above embodiments, a preset artificial intelligence algorithm is used to identify the current relay protection action of the current relay protection device and determine whether there is an action deviation. If there is an action deviation, a preset behavior pattern matching strategy is used to identify the type of action deviation, and a target protection strategy is determined based on the type of action deviation. The target protection strategy is then used to correct the current relay protection action, and the system monitors whether there is an action deviation after correction. If there is still an action deviation after correction, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device. This solves the problems of poor adaptability and low intelligence of current relay protection devices, improves the accuracy and intelligence of the relay protection system under dynamic operating conditions, reduces the incidence of abnormal situations, and ensures the safety and stability of the power system through automatic correction and fault-tolerant control mechanisms.
[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of a fault-tolerant control method for a relay protection device according to an embodiment of this application; Figure 2 This is a schematic diagram of the system structure of a fault-tolerant control device for a relay protection device according to an embodiment of this application; Figure 3 This is a functional structure diagram of a behavior analysis module according to an embodiment of this application; Figure 4 This is a flowchart illustrating the collaborative workflow of a correction and fault tolerance module according to one embodiment of this application. Figure 5 This is a schematic diagram of a fault-tolerant control device for a relay protection device according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation
[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0026] The following description, with reference to the accompanying drawings, outlines a fault-tolerant control method, apparatus, device, and storage medium for relay protection devices according to embodiments of this application. Addressing the issues of poor adaptability and low intelligence in current relay protection devices mentioned in the background, this application provides a fault-tolerant control method for relay protection devices. In this method, a preset artificial intelligence algorithm is used to identify the current relay protection action of the current relay protection device and determine whether there is an action deviation. If there is an action deviation, a preset behavior pattern matching strategy is used to identify the type of action deviation, and a target protection strategy is determined based on the type of action deviation. The target protection strategy is then used to correct the current relay protection action, and the system monitors whether there is an action deviation after correction. If there is still an action deviation after correction, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device. This solves the problems of poor adaptability and low intelligence in current relay protection devices, improves the accuracy and intelligence of the relay protection system under dynamic operating conditions, reduces the incidence of abnormal situations, and ensures the safety and stability of the power system through automatic correction and fault-tolerant control mechanisms.
[0027] Specifically, Figure 1 This is a flowchart illustrating a fault-tolerant control method for a relay protection device provided in an embodiment of this application.
[0028] The AI-assisted intelligent correction and fault-tolerant control system for relay protection actions adopted in this application, such as... Figure 2 As shown, it includes: Data acquisition module: used to acquire operating signals, current, voltage, switch status, waveform data, etc. of relay protection devices; Behavior analysis module: Uses artificial intelligence algorithms to analyze and classify the actions of the protection device, identify the actions, and determine whether there are any deviations; The behavior analysis module uses deep learning algorithms to perform behavior analysis on the action signals, current, voltage, switch status, and waveform data of relay protection devices, such as... Figure 3 As shown, this includes preprocessing and feature extraction of data to identify the current relay protection action, such as short-circuit fault protection action, abnormal operation protection action, or malfunction, and to determine whether there is an action deviation of the current relay protection device based on the preset action threshold.
[0029] Adaptive correction module: Based on the judgment results of the behavior analysis module, the module performs correction processing on the relay protection device, automatically adjusts relevant parameters, and ensures the correctness of the protection action; Fault-tolerant control module: When an abnormality or fault is detected in the protection action, it automatically switches to the backup protection strategy or backup protection device to ensure that the power system is not affected; Human-computer interaction module: Provides real-time status monitoring, analysis results and corrective suggestions to operation and maintenance personnel, and supports manual intervention and decision-making; Learning and optimization module: Trains and optimizes the behavior analysis algorithm based on historical operating data, enabling the system to adaptively adjust to changes in the power system.
[0030] like Figure 1 As shown, the fault-tolerant control method of this relay protection device includes the following steps: In step S101, the current relay protection action of the current relay protection device is identified based on a preset artificial intelligence algorithm, and it is determined whether there is an action deviation in the current relay protection action. Optionally, in some embodiments, based on the current relay protection action, a preset artificial intelligence algorithm is used to determine whether there is an action deviation in the current relay protection action, including: using the preset artificial intelligence algorithm to determine whether the current relay protection action is consistent with the corresponding preset action threshold; if the current relay protection action is inconsistent with the corresponding preset action threshold, it is determined that there is an action deviation in the current relay protection action.
[0031] Specifically, the system collects current operating data of the relay protection device, which includes data such as current, voltage, and frequency. The collected data is input into the behavior analysis module, which uses deep learning algorithms to identify the current relay protection action. Deep learning algorithms have powerful feature extraction and pattern recognition capabilities, enabling them to accurately identify short-circuit fault protection actions, abnormal operation protection actions, or malfunctions from complex operational data.
[0032] The behavior analysis module determines whether there is an action deviation in the current relay protection action based on preset action thresholds. If the current relay protection action is inconsistent with the corresponding preset action threshold, it is determined that there is an action deviation in the current relay protection action.
[0033] In this embodiment of the application, the preset action thresholds include: overcurrent protection action threshold, overvoltage / undervoltage protection action threshold, frequency protection action threshold, and differential protection action threshold, etc.
[0034] For example, the preset operating threshold for overcurrent protection is 1.2 times the rated current. When the current value corresponding to the overcurrent protection action of the current relay protection device exceeds this threshold, it is determined that the current relay protection action has an operating deviation.
[0035] The preset artificial intelligence algorithm is a deep learning algorithm, which introduces decision tree, fuzzy logic, deep neural network or reinforcement learning model to model the current state of the current relay protection device, and uses fault mode recognition algorithm to classify the current state, thereby identifying the current relay protection action.
[0036] In step S102, if there is an action deviation in the current relay protection action, the action deviation type of the current relay protection action is identified based on the preset behavior pattern matching strategy, and the target protection strategy of the current relay protection action is determined according to the action deviation type. The target protection strategy is used to correct the current relay protection action, and the action deviation of the corrected relay protection action is monitored. Optionally, in some embodiments, identifying the current relay protection device's action deviation type based on a preset behavior pattern matching strategy, and determining the target protection strategy for the current relay protection action based on the action deviation type, includes: determining the current action deviation type by matching the current relay protection action with fault modes in a preset knowledge base, and determining at least one protection strategy corresponding to the current action deviation type in the preset knowledge base; evaluating the score of each protection strategy, and taking the protection strategy with the highest score among the at least one protection strategy as the target protection strategy for the current relay protection action, and taking the remaining protection strategies among the at least one protection strategy as backup protection strategies.
[0037] Specifically, when there is an operational deviation in the current relay protection action, the system matches the current relay protection action with the fault modes in the preset knowledge base. By comparing the characteristics of the current relay protection action with the fault mode characteristics in the preset knowledge base, the type of operational deviation of the current relay protection action is determined. For example, if the current relay protection action is triggered before the current reaches the short-circuit fault threshold, it may be judged as a false operation deviation.
[0038] Based on the determined type of action deviation, at least one corresponding protection strategy is searched in the preset knowledge base. For example, by using deep learning algorithms to extract and classify features from current, voltage, frequency and other data, similar historical fault cases are found, and the successful protection strategies adopted in those cases are referenced.
[0039] The knowledge base stores multiple possible protection strategies for different types of deviations. These strategies are based on historical experience, theoretical analysis, and expert knowledge. For example, for erroneous operation deviations, possible protection strategies include adjusting the action threshold, increasing the action delay time, and optimizing the protection algorithm.
[0040] The reliability, selectivity, sensitivity, and speed of each protection strategy are comprehensively evaluated. Based on the evaluation results, each protection strategy is scored, and the strategy with the highest score is designated as the target protection strategy for the current relay protection operation, while the remaining strategies are designated as backup protection strategies.
[0041] Optionally, in some embodiments, after selecting the protection strategy with the highest score among at least one protection strategy as the target protection strategy, the process includes: adjusting the operation parameters of the relay protection action based on the target protection strategy; monitoring whether there is an operation deviation in the corrected relay protection action within a preset time; and if there is no operation deviation in the corrected relay protection action, then continuing to use the corrected relay protection action for relay protection.
[0042] Specifically, the operating parameters of the current relay protection action are corrected according to the selected target protection strategy. For example, if the target protection strategy is to adjust the overcurrent protection threshold of the relay protection action, the system will automatically set the overcurrent protection threshold in the relay protection action to a new appropriate value, resulting in the corrected relay protection action.
[0043] Furthermore, the system monitors whether there is any operational deviation in the corrected relay protection action within a preset time. If there is no operational deviation in the corrected relay protection action, the corrected relay protection action will continue to be used for relay protection.
[0044] In step S103, if there is an operational deviation in the relay protection action after correction, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device.
[0045] Understandably, when it is detected that there is still an operational deviation in the relay protection action after correction, the preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device, including automatically switching to the backup protection strategy or activating the backup protection device, to ensure that the power system is not affected.
[0046] Optionally, in some embodiments, if the corrected relay protection action has an action deviation, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device, including: if the corrected relay protection action meets a preset protection action failure condition, the target protection strategy is switched to a backup protection strategy for relay protection, and a first alarm signal is sent to a preset terminal; if the corrected relay protection action meets a preset malfunction condition, the current relay protection device is isolated, and a second alarm signal is sent to the preset terminal; if the corrected relay protection action meets a preset abnormal operating state condition, the current relay protection device is switched to a backup protection device for relay protection, and a third alarm signal is sent to the preset terminal; if the corrected relay protection action meets a preset electrical parameter over-limit condition, the target protection strategy is switched to a backup protection strategy for relay protection, and a fourth alarm signal is sent to the preset terminal; if the corrected relay protection action meets a preset multi-level protection failure condition, the target protection strategy is switched to a backup protection strategy for relay protection, and a fifth alarm signal is sent to the preset terminal.
[0047] Specifically, when the corrected relay protection action has an operational deviation, the backup protection strategy can be activated or the system can automatically switch to the backup protection device according to the set rules. The specific set rules are as follows: (1) Protection action failure rules. If the corrected relay protection action does not operate within the set time (e.g., 0.2 seconds) and the current / voltage reaches the action setting value, it is determined that the protection fails to operate. The corrected relay protection action is determined to meet the preset protection action failure conditions. At this time, the backup protection strategy is activated and the first alarm signal is sent to the preset terminal. The preset terminal is such as the computer of the operation and maintenance personnel, the server of the monitoring center, etc. The first alarm signal can be the signal of the corrected relay protection action failure. (2) If the relay protection action after correction meets the preset false operation conditions, that is, no abnormality occurs in the line / equipment when it is operated, the system records the number of false operations, and automatically isolates the relay protection device when the tolerance is exceeded (e.g., 2 times / day), and sends a second alarm signal to the preset terminal. The second alarm signal can be the signal of false operation of the relay protection after correction. (3) Operational status abnormality detection rules. When the current relay protection device is offline, fails self-test, or has communication interruption for more than a set time (e.g., 30 seconds), it is determined that the relay protection action after correction meets the preset operational status abnormality conditions. At this time, the current relay protection device will be automatically switched to the backup protection device, and a third alarm signal will be sent to the preset terminal. The third alarm signal can be a signal that the current relay protection device is in an abnormal operational status. (4) Equipment electrical parameter over-limit rules. If the continuous current, voltage or frequency of the relay protection action after correction exceeds the safe operating threshold (e.g., the current exceeds the set value by 10% for 3 seconds), it is determined that the system may have a protection defect. It is determined that the relay protection action after correction meets the preset electrical parameter over-limit conditions. At this time, the target protection strategy is switched to the backup protection strategy for relay protection, and a fourth alarm signal is sent to the preset terminal. The fourth alarm signal can be the signal that the electrical parameters of the relay protection action after correction exceed the limit. (5) Time redundancy coordination rule. If a certain level of protection action of the corrected relay protection action is not completed, and the next level of protection also fails to act within the delay time window (e.g., 0.5 seconds), it is determined that the corrected relay protection action meets the preset multi-level protection failure condition. At this time, the target protection strategy is switched to the backup protection strategy for relay protection, and a fifth alarm signal is sent to the preset terminal. The fifth alarm signal can be the signal of multi-level protection failure of the corrected relay protection action.
[0048] Therefore, when the relay protection still has operational deviations after correction, it can issue different early warning signals in a timely manner according to different abnormal situations, assisting power system operation and maintenance personnel in efficiently handling power protection device problems.
[0049] Optionally, in some embodiments, when initiating a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the method includes: if a user's control command is detected, then exiting the fault-tolerant control on the current relay protection device and performing control based on the user's control command.
[0050] Understandably, if the human-machine interface module detects a human control command (such as maintenance personnel remotely switching the backup protection device or switching the backup protection strategy), it is allowed to skip the fault-tolerant control of the current relay protection device and enter the manual control state, and control is performed based on the user's control command.
[0051] Optionally, in some embodiments, after activating a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the method further includes: obtaining the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device; generating an event log based on the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device, uploading it to a preset terminal, and updating a preset knowledge base according to the correction result and the fault-tolerant control result, so as to perform action correction and fault-tolerant control based on the updated knowledge base.
[0052] The correction results mainly record whether the relay protection action correction was successful, and the comparison between the relay protection actions before and after the correction. For example, if the protection action time was too long before the correction, and the action time was shortened to a reasonable range after the correction, and the accuracy of the action was improved, all of this information will be recorded in detail in the correction results.
[0053] The fault-tolerant control results include records of switching backup protection devices or switching backup protection strategies during the fault-tolerant control process, as well as the status of the relay protection devices after the fault-tolerant control.
[0054] Based on the obtained correction results and fault-tolerant control results of the relay protection actions after correction, the system generates a detailed event log in a preset log format. The log content includes information such as correction timestamp, device identification, operating parameters, correction operation description, and fault-tolerant control measures.
[0055] The generated event logs are uploaded to preset terminals, such as the computers of maintenance personnel or the servers of the monitoring center, via the network communication module, to ensure that maintenance personnel can obtain the latest information of the device in a timely manner.
[0056] The system performs in-depth analysis of the correction results and fault-tolerant control results, extracting valuable information such as new failure modes, effective correction methods, and fault-tolerant strategies.
[0057] Based on the extracted information, the preset knowledge base is updated according to the knowledge base update rules. For example, if a new factor causing protection malfunction is discovered, it is added to the fault mode library, and the corresponding corrective methods and fault-tolerant measures are recorded; if a certain corrective method proves to be effective in practice, it is optimized and updated to the corrective strategy library. The updated knowledge base will provide a more accurate and comprehensive basis for subsequent action correction and fault-tolerant control.
[0058] The visualization interface communicates with the monitoring system in real time to obtain various operating parameters of the relay protection device, such as current, voltage, power, and frequency, and displays them on the interface in intuitive charts and figures. For example, a line graph can be used to show the change of current over time, allowing maintenance personnel to clearly see whether the current fluctuates within the normal range.
[0059] At the same time, the interface will also display the working mode of the relay protection device and the operation status indicator (such as normal or faulty relay protection device), which makes it convenient for maintenance personnel to quickly understand the overall operation of the device.
[0060] When the system detects an abnormality in the relay protection device, an abnormality prompt window will pop up on the visual interface in a timely manner, providing detailed information such as the type, location, and severity of the abnormality, and will also sound an alarm to remind maintenance personnel to pay attention.
[0061] Based on experience and algorithms in a pre-set knowledge base, when the system analyzes the current operating status of relay protection devices, it provides corresponding corrective suggestions to maintenance personnel when it detects operational deviations. For example, if a potential deviation in the protection settings is detected, the system will suggest that maintenance personnel recalibrate the settings and provide calibration methods and reference ranges.
[0062] The visual interface provides a series of operation buttons and input boxes, allowing maintenance personnel to operate the relay protection device in real time. For example, maintenance personnel can remotely modify the action protection threshold, switch the device's operating mode, and view historical data through the interface. During operation, the process is recorded in the event log for subsequent auditing and traceability.
[0063] To enable those skilled in the art to further understand the fault-tolerant control method of the relay protection device according to the embodiments of this application, the following detailed description is provided in conjunction with specific embodiments, such as... Figure 4 As shown.
[0064] Data acquisition: Real-time acquisition of key data such as the operating signals, current, and voltage of relay protection devices.
[0065] Behavior analysis: The collected data is input into the behavior analysis module. The module uses deep learning algorithms to identify the current relay protection action and determines whether there is any action deviation based on the preset action threshold.
[0066] Correction processing: If a protection action deviation is detected, at least one protection strategy is matched from the preset knowledge base, and the optimal protection strategy is determined. The correction module corrects the relevant protection parameters of the relay protection action according to the optimal protection strategy.
[0067] Fault-tolerant control: The operation of the relay protection after correction is verified. If the operation of the relay protection after correction still has deviation, the system will automatically activate the backup protection strategy or switch to other protection devices to ensure that the system does not fail.
[0068] Real-time monitoring and reporting: Through the human-computer interaction module, maintenance personnel can view the equipment status, the evaluation results of protection actions, and system optimization suggestions in real time. They can also manually review and adjust corrective measures.
[0069] System optimization: Through the learning optimization module, the operation data of the relay protection device, as well as the correction results and fault-tolerant control results are recorded in real time, thereby updating the preset knowledge base. Based on the updated knowledge base, action correction and fault-tolerant control are performed to cope with more complex power system operating conditions.
[0070] In summary, the technical effects of the embodiments of this application are as follows: 1. Artificial intelligence-based intelligent behavior analysis and correction This application is the first to apply artificial intelligence deep learning algorithms to the action recognition and analysis of relay protection devices, possessing adaptive learning capabilities. Traditional relay protection devices rely on preset parameters and manual adjustments, while this application uses real-time collected data for intelligent analysis and judgment, enabling dynamic identification of the action type, abnormal mode, and deviation of the protection device, thereby achieving intelligent correction. Through the automatic learning of artificial intelligence algorithms, the system can automatically optimize protection actions under complex and constantly changing power system operating conditions, significantly improving the accuracy and response speed of the relay protection device.
[0071] 2. Multi-dimensional intelligent error correction and fault tolerance control mechanism This application, through the collaboration of a behavior analysis module and an adaptive correction module, can not only intelligently identify anomalies but also proactively correct them, adjusting protection parameters to ensure accuracy. When the system determines that a fault cannot be corrected, the fault-tolerant control module automatically switches to a backup protection strategy or backup protection device to ensure the stable operation of the power system. Compared to existing technologies that rely on only a single method (such as manual adjustment or preset parameters), this application offers higher robustness and emergency response capabilities.
[0072] 3. Real-time learning and optimization This application features an adaptive learning mechanism that keeps pace with the times. Through a learning optimization module, it continuously accumulates historical operating data and optimizes the analysis algorithm based on real-time feedback. As the operating conditions of the power system constantly change, the system automatically adapts to the new operating environment, thereby improving its adaptability to complex dynamic changes in the power system. Traditional relay protection devices cannot achieve this continuous optimization and self-improvement, while this application can dynamically adjust during equipment operation, avoiding potential risks caused by changes in operating conditions.
[0073] 4. Intelligent human-computer interaction and visual management This application utilizes a human-computer interaction module to achieve real-time monitoring of the relay protection system's status, visualization of analysis results, and dynamic feedback of corrective suggestions. Maintenance personnel can not only clearly understand the system's operational status but also quickly make judgments and take actions based on real-time data and corrective suggestions. This makes manual intervention more targeted, timely, and accurate, improving the decision-making efficiency of operators while reducing operational risks caused by human error.
[0074] 5. Efficient Implementation of Intelligent Fault-Tolerant Control Strategy Upon detecting an anomaly or fault in the protection device, this application can switch to a backup protection strategy or redundant system in the shortest possible time, ensuring that power equipment does not experience system outages due to relay protection device failure. In existing technologies, fault-tolerant functions are relatively simple, relying on external mechanisms or redundant equipment. In contrast, this application integrates an intelligent fault-tolerant control module, making fault-tolerant switching more efficient and intelligent, without affecting the system's real-time protection functions, thus improving the stability and security of the power system.
[0075] 6. Cross-platform integration and intelligent upgrade This application supports seamless integration with existing power equipment and relay protection systems, enabling collaborative operation with traditional relay protection devices. Through continuous upgrades of artificial intelligence algorithms and automatic data accumulation, the system can continuously upgrade its intelligence during operation, maintaining adaptability to new power equipment and substation operating conditions, thus solving the problem that traditional equipment cannot adapt to rapidly changing power systems.
[0076] According to the fault-tolerant control method for relay protection devices proposed in this application, the current relay protection action of the current relay protection device is identified based on a preset artificial intelligence algorithm, and it is determined whether there is an action deviation in the current relay protection action. If there is an action deviation in the current relay protection action, the action deviation type of the current relay protection action is identified based on a preset behavior pattern matching strategy, and the target protection strategy of the current relay protection action is determined according to the action deviation type. The target protection strategy is used to correct the current relay protection action, and the action deviation after correction is monitored. If there is an action deviation in the corrected relay protection action, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device. This solves the problems of poor adaptability and low intelligence of current relay protection devices. By introducing artificial intelligence algorithms, the relay protection devices can more accurately identify various protection actions and their deviations, thereby effectively reducing abnormal situations. Through intelligent correction modules and fault-tolerant control modules, erroneous actions can be corrected in real time, or the system can switch to backup protection measures when a fault occurs, improving the stability of the power system. The system can also learn and optimize behavior analysis algorithms based on historical data and real-time feedback through learning and optimization modules, adapting to various changes in the power system and continuously improving the intelligence level of the protection system. Through intelligent judgment and automatic processing, the need for manual intervention is significantly reduced, and the efficiency of fault handling is improved.
[0077] Next, with reference to the accompanying drawings, the fault-tolerant control device of the relay protection device proposed according to the embodiments of this application is described.
[0078] Figure 5 This is a block diagram of the fault-tolerant control device of the relay protection device in the embodiments of this application.
[0079] like Figure 5As shown, the fault-tolerant control device 10 of the relay protection device includes: an identification module 100, a correction module 200, and a control module 300.
[0080] The system includes: an identification module 100, used to identify the current relay protection action of the current relay protection device based on a preset artificial intelligence algorithm, and to determine whether there is an action deviation in the current relay protection action; a correction module 200, used to identify the action deviation type of the current relay protection action based on a preset behavior pattern matching strategy if there is an action deviation, and to determine the target protection strategy for the current relay protection action according to the action deviation type, and to correct the current relay protection action using the target protection strategy, and to monitor whether there is an action deviation in the corrected relay protection action; and a control module 300, used to activate a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device if there is an action deviation in the corrected relay protection action.
[0081] Optionally, in some embodiments, the identification module 100 is further configured to: use a preset artificial intelligence algorithm to determine whether the current relay protection action is consistent with the corresponding preset action threshold; if the current relay protection action is inconsistent with the corresponding preset action threshold, then determine that the current relay protection action has an action deviation.
[0082] Optionally, in some embodiments, the correction module 200 is further configured to: determine the current action deviation type based on the fault mode in the preset knowledge base matched with the current relay protection action, and determine at least one protection strategy corresponding to the current action deviation type in the preset knowledge base; evaluate the score of each protection strategy, and take the protection strategy with the highest score among the at least one protection strategy as the target protection strategy for the current relay protection action, and take the remaining protection strategy among the at least one protection strategy as the backup protection strategy.
[0083] Optionally, in some embodiments, after selecting the protection strategy with the highest score among at least one protection strategy as the target protection strategy, the correction module 200 is further configured to: adjust the action parameters of the relay protection action based on the target protection strategy; monitor whether there is an action deviation in the corrected relay protection action within a preset time; if there is no action deviation in the corrected relay protection action, then continue to use the corrected relay protection action for relay protection.
[0084] Optionally, in some embodiments, the control module 300 is further configured to: if the corrected relay protection action meets a preset protection action failure condition, switch the target protection strategy to a backup protection strategy for relay protection and send a first alarm signal to a preset terminal; if the corrected relay protection action meets a preset maloperation condition, isolate the current relay protection device and send a second alarm signal to the preset terminal; if the corrected relay protection action meets a preset abnormal operating condition, switch the current relay protection device to a backup protection device for relay protection and send a third alarm signal to the preset terminal; if the corrected relay protection action meets a preset electrical parameter over-limit condition, switch the target protection strategy to a backup protection strategy for relay protection and send a fourth alarm signal to the preset terminal; if the corrected relay protection action meets a preset multi-level protection failure condition, switch the target protection strategy to a backup protection strategy for relay protection and send a fifth alarm signal to the preset terminal.
[0085] Optionally, in some embodiments, when the preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device, the control module 300 is further configured to: if a user's control command is detected, exit the fault-tolerant control on the current relay protection device and perform control based on the user's control command.
[0086] Optionally, in some embodiments, after activating a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the control module 300 is further configured to: obtain the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device; generate an event log based on the correction result of the corrected relay protection action and the fault-tolerant control result of the current relay protection device, and upload it to a preset terminal; and update a preset knowledge base according to the correction result and the fault-tolerant control result, so as to perform action correction and fault-tolerant control according to the updated knowledge base.
[0087] It should be noted that the foregoing explanation of the fault-tolerant control method embodiment for relay protection devices also applies to the fault-tolerant control device of the relay protection device in this embodiment, and will not be repeated here.
[0088] The fault-tolerant control device for relay protection proposed in this application uses an artificial intelligence algorithm to identify whether there is an operational deviation in the current relay protection action. If there is an operational deviation, the device identifies the type of deviation and determines the target protection strategy based on that type. The target protection strategy is then used to correct the current relay protection action, and the device monitors whether there is still an operational deviation after correction. If there is still an operational deviation after correction, fault-tolerant control is applied to the current relay protection device. This solves the problems of poor adaptability and low intelligence in current relay protection devices, improves the accuracy and intelligence of the relay protection system under dynamic operating conditions, reduces the incidence of abnormal situations, and ensures the safety and stability of the power system.
[0089] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: The memory 601, the processor 602, and the computer program stored on the memory 601 and capable of running on the processor 602.
[0090] When the processor 602 executes the program, it implements the fault-tolerant control method for the relay protection device provided in the above embodiments.
[0091] Furthermore, electronic devices also include: Communication interface 603 is used for communication between memory 601 and processor 602.
[0092] The memory 601 is used to store computer programs that can run on the processor 602.
[0093] The memory 601 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.
[0094] If the memory 601, processor 602, and communication interface 603 are implemented independently, then the communication interface 603, memory 601, and processor 602 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 6The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.
[0095] Optionally, in a specific implementation, if the memory 601, processor 602, and communication interface 603 are integrated on a single chip, then the memory 601, processor 602, and communication interface 603 can communicate with each other through an internal interface.
[0096] The processor 602 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.
[0097] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the fault-tolerant control method of the relay protection device described above.
[0098] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0100] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.
[0101] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable storage medium could be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0102] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0103] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
[0104] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
[0105] The computer-readable storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. A fault-tolerant control method for a relay protection device, characterized in that, Includes the following steps: The system uses a pre-set artificial intelligence algorithm to identify the current relay protection action of the current relay protection device and determines whether there is any action deviation in the current relay protection action. If the current relay protection action has an action deviation, the action deviation type of the current relay protection action is identified based on a preset behavior pattern matching strategy, and the target protection strategy of the current relay protection action is determined according to the action deviation type. The target protection strategy is used to correct the current relay protection action, and the action deviation is monitored after correction. If the corrected relay protection action has the aforementioned action deviation, then a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device.
2. The method according to claim 1, characterized in that, The step of determining whether there is an operational deviation in the current relay protection device based on the current relay protection operation includes: A preset artificial intelligence algorithm is used to determine whether the current relay protection action is consistent with the corresponding preset action threshold. If the current relay protection action is inconsistent with the corresponding preset action threshold, it is determined that the current relay protection action has the action deviation.
3. The method according to claim 1, characterized in that, The method of identifying the action deviation type of the current relay protection action based on a preset behavior pattern matching strategy, and determining the target protection strategy for the current relay protection action based on the action deviation type, includes: Based on the fault modes in the preset knowledge base matched with the current relay protection action, the current action deviation type is determined, and at least one protection strategy corresponding to the current action deviation type is determined from the preset knowledge base; The score of each protection strategy is evaluated, and the protection strategy with the highest score among the at least one protection strategy is taken as the target protection strategy for the current relay protection operation, and the remaining protection strategies among the at least one protection strategy are taken as backup protection strategies.
4. The method according to claim 3, characterized in that, After selecting the protection strategy with the highest score among the at least one protection strategy as the target protection strategy, the following is included: Adjust the action parameters of the relay protection action based on the target protection strategy; Monitor whether the relay protection action after correction has the aforementioned action deviation within a preset time; If the corrected relay protection action does not have the aforementioned action deviation, then the corrected relay protection action will continue to be used for relay protection.
5. The method according to claim 4, characterized in that, If the corrected relay protection action still exhibits the aforementioned action deviation, a preset fault-tolerant control strategy is activated to perform fault-tolerant control on the current relay protection device, including: If the corrected relay protection action meets the preset protection action failure conditions, the target protection strategy is switched to the backup protection strategy for relay protection, and a first alarm signal is sent to the preset terminal. If the corrected relay protection action meets the preset malfunction conditions, the current relay protection device is isolated and a second alarm signal is sent to the preset terminal. If the corrected relay protection action meets the preset abnormal operating conditions, the current relay protection device will be switched to the backup protection device for relay protection, and a third alarm signal will be sent to the preset terminal. If the corrected relay protection action meets the preset electrical parameter over-limit conditions, the target protection strategy is switched to the backup protection strategy for relay protection, and a fourth alarm signal is sent to the preset terminal. If the corrected relay protection action meets the preset multi-level protection failure conditions, the target protection strategy is switched to the backup protection strategy for relay protection, and a fifth alarm signal is sent to the preset terminal.
6. The method according to claim 1, characterized in that, When activating a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the following is included: If a user's control command is detected, the fault-tolerant control of the current relay protection device is exited, and control is performed based on the user's control command.
7. The method according to claim 1, characterized in that, After activating the preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device, the following steps are also included: Obtain the correction results of the relay protection action after correction and the fault-tolerant control results of the current relay protection device; An event log is generated based on the correction result of the relay protection action after correction and the fault-tolerant control result of the current relay protection device, and uploaded to the preset terminal. The preset knowledge base is updated according to the correction result and the fault-tolerant control result, so as to perform action correction and fault-tolerant control according to the updated knowledge base.
8. A fault-tolerant control device for a relay protection device, characterized in that, include: The identification module is used to identify the current relay protection action of the current relay protection device based on a preset artificial intelligence algorithm, and to determine whether the current relay protection action has an action deviation. The correction module is used to identify the type of action deviation of the current relay protection action based on a preset behavior pattern matching strategy if there is an action deviation in the current relay protection action, determine the target protection strategy of the current relay protection action according to the action deviation type, correct the current relay protection action using the target protection strategy, and monitor whether the action deviation exists in the corrected relay protection action. The control module is used to activate a preset fault-tolerant control strategy to perform fault-tolerant control on the current relay protection device if the operation deviation exists after the correction.
9. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the fault-tolerant control method of the relay protection device as described in any one of claims 1-7.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the fault-tolerant control method for the relay protection device as described in any one of claims 1-7.