Coupler slip fault early warning method and electronic equipment

Abstract

The invention provides a coupling slip fault early warning method and electronic equipment. The method comprises the following steps: determining a total accumulated slip angle according to operation information of a coupler in a preset sampling period; determining a current early warning result according to the total accumulated slip angle and a current early warning threshold value; determining whether to optimize the current early warning threshold value or not according to the current early warning result and the real slip information of the coupler; if yes, optimizing the current early warning threshold value to obtain a new current early warning threshold value; and if not, taking the current early warning threshold value as a target early warning threshold value, and carrying out slip fault early warning on the coupler based on the target early warning threshold value. The accuracy of the current early warning result is verified through the real slip information obtained through field detection, so that whether the current early warning threshold value is reasonable or not is judged, the current early warning threshold value is optimized and updated when the current early warning threshold value is not reasonable, and the new early warning threshold value suitable for the current machine type and working condition is obtained. Therefore, health monitoring and timely early warning of the coupler are realized.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and more specifically, to a method and electronic device for early warning of coupling slippage faults. Background Technology

[0002] During long-term operation, the couplings of doubly fed generator units are at risk of slippage due to wear, loosening, and other reasons. After slippage, the coupling will deviate from its normal position, which will lead to a decrease in transmission efficiency and damage to operational safety. Therefore, it is crucial to monitor and warn of coupling slippage.

[0003] Currently, the main method for monitoring and warning of coupling slippage is to shut down the machine for manual confirmation after an anomaly occurs in the unit or suspected signs are discovered during routine inspections. This method lacks real-time capability, makes it difficult to detect slippage faults in a timely manner, and relies on subjective human judgment, which cannot adapt to changing actual operating conditions and is prone to misjudgment. Therefore, existing coupling slippage monitoring and warning methods cannot identify slippage faults and issue warnings in a timely manner, and have a high rate of misjudgment. Summary of the Invention

[0004] The purpose of this application is to provide a method and electronic device for early warning of slippage faults in couplings, in order to address the shortcomings of the prior art mentioned above, and to solve the problems that the prior art cannot identify slippage faults in a timely manner and issue early warnings, and has a high false judgment rate.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows: In a first aspect, embodiments of this application provide a method for early warning of coupling slippage faults, the method comprising: Based on the operating information of the coupling within a preset sampling period, the total cumulative slip angle of the coupling within the preset sampling period is determined; Based on the total cumulative slip angle and the current warning threshold, the current warning result is determined, and the current warning result is used to indicate whether the coupling has slipped. Based on the current warning result and the actual slippage information of the coupling, it is determined whether to optimize the current warning threshold. The actual slippage information is obtained by conducting on-site testing of the coupling. If so, the current warning threshold is optimized to obtain a new current warning threshold; If not, the current warning threshold is used as the target warning threshold, and the coupling is given a slippage fault warning based on the target warning threshold.

[0006] As one possible implementation, determining the total cumulative slip angle of the coupling within the preset sampling period based on the coupling's operating information within that period includes: Based on the operating information, the slip angle of the coupling is determined at each sampling moment in the preset sampling period. The operating information includes the speed of the driving end of the coupling and the speed of the driven end of the coupling. The total cumulative slip angle of the coupling within the preset sampling period is determined based on the slip angle of the coupling at each sampling time.

[0007] As one possible implementation, determining the slip angle of the coupling at each sampling moment in the preset sampling period based on the operating information includes: Based on formula The slip angle at the sampling time is calculated; in, Indicates the sampling time The angle of slippage, Indicates the sampling time Instantaneous slip rate, instantaneous slip rate , Indicates the sampling time The corresponding drive end speed of the coupling, Indicates the sampling time The corresponding driven end speed of the coupling, Indicates the theoretical transmission ratio. Indicates the preset sampling period.

[0008] As one possible implementation, determining the total cumulative slip angle of the coupling within the preset sampling period based on the slip angle of the coupling at each sampling moment includes: Based on the slip angle of the coupling at each sampling time, the cumulative slip angle of the coupling over multiple unit time periods is determined. The total cumulative slip angle is obtained by summing the cumulative slip angles of the coupling over multiple unit time periods.

[0009] As one possible implementation, determining the cumulative slip angle of the coupling over multiple unit time intervals based on the slip angle of the coupling at each sampling moment includes: Based on formula The cumulative slip angle of the coupling per unit time is calculated; in, Indicates the first The cumulative slip angle per unit time Indicates a specific sampling time. Indicates a specific sampling time The angle of slippage, Indicates the preset sampling period. , According to the preset sampling period The unit of time is determined.

[0010] As one possible implementation, optimizing the current warning threshold to obtain a new current warning threshold includes: Based on the current warning results and the actual slippage information, determine the correction coefficient; The current warning threshold is optimized using the correction coefficient to obtain a new current warning threshold.

[0011] As one possible implementation, optimizing the current warning threshold using the correction coefficient to obtain a new current warning threshold includes: Based on formula The new current warning threshold is calculated; in, This indicates the new current warning threshold. This represents the original current warning threshold. Indicates the adjustment amount. , This indicates the actual cumulative slip angle when the warning is triggered. This indicates the preset learning rate. This represents the correction factor.

[0012] As one possible implementation, the method further includes: Obtain the current cumulative slip angle of the coupling; The current warning threshold is updated based on the false alarm correction coefficient and the false miss correction coefficient to obtain the updated warning threshold. The deviation range is determined based on the updated warning threshold, the basic deviation coefficient, and the adjustment factor. Based on the updated warning threshold, the deviation range, and the current cumulative slippage angle of the coupling, a slippage fault warning is issued for the coupling.

[0013] As one possible implementation, the method further includes: Obtain the current warning threshold for couplings of multiple wind turbines of the same type; A reference threshold is determined based on the current warning threshold of the couplings of multiple wind turbines of the same type and the number of wind turbines of the same type. The current warning thresholds for couplings of multiple wind turbines of the same type are adjusted according to the reference threshold.

[0014] Secondly, embodiments of this application provide a coupling slippage fault early warning device, the device comprising: The first determining module is used to determine the total cumulative slip angle of the coupling within the preset sampling period based on the operating information of the coupling within the preset sampling period. The second determining module is used to determine the current warning result based on the total cumulative slip angle and the current warning threshold. The current warning result is used to indicate whether the coupling has slipped. The third determining module is used to determine whether to optimize the current warning threshold based on the current warning result and the actual slippage information of the coupling. The actual slippage information is obtained by conducting on-site testing of the coupling. An optimization module is used to optimize the current warning threshold if the condition is met, to obtain a new current warning threshold. The early warning module is used to, if not, take the current early warning threshold as the target early warning threshold and provide an early warning of slippage fault for the coupling based on the target early warning threshold.

[0015] As one possible implementation, the first determining module is specifically used for: Based on the operating information, the slip angle of the coupling is determined at each sampling moment in the preset sampling period. The operating information includes the speed of the driving end of the coupling and the speed of the driven end of the coupling. The total cumulative slip angle of the coupling within the preset sampling period is determined based on the slip angle of the coupling at each sampling time.

[0016] As one possible implementation, the first determining module is specifically used for: Based on formula The slip angle at the sampling time is calculated; in, Indicates the sampling time The angle of slippage, Indicates the sampling time Instantaneous slip rate, instantaneous slip rate , Indicates the sampling time The corresponding drive end speed of the coupling, Indicates the sampling time The corresponding driven end speed of the coupling, Indicates the theoretical transmission ratio. Indicates the preset sampling period.

[0017] As one possible implementation, the first determining module is specifically used for: Based on the slip angle of the coupling at each sampling time, the cumulative slip angle of the coupling over multiple unit time periods is determined. The total cumulative slip angle is obtained by summing the cumulative slip angles of the coupling over multiple unit time periods.

[0018] As one possible implementation, the first determining module is specifically used for: Based on formula The cumulative slip angle of the coupling per unit time is calculated; in, Indicates the first The cumulative slip angle per unit time Indicates a specific sampling time. Indicates a specific sampling time The angle of slippage, Indicates the preset sampling period. , According to the preset sampling period The unit of time is determined.

[0019] As one possible implementation, the optimization module is specifically used for: Based on the current warning results and the actual slippage information, determine the correction coefficient; The current warning threshold is optimized using the correction coefficient to obtain a new current warning threshold.

[0020] As one possible implementation, the optimization module is specifically used for: Based on formula The new current warning threshold is calculated; in, This indicates the new current warning threshold. This represents the original current warning threshold. Indicates the adjustment amount. , This indicates the actual cumulative slip angle when the warning is triggered. This indicates the preset learning rate. This represents the correction factor.

[0021] As one possible implementation, the early warning module is also used for: Obtain the current cumulative slip angle of the coupling; The current warning threshold is updated based on the false alarm correction coefficient and the false miss correction coefficient to obtain the updated warning threshold. The deviation range is determined based on the updated warning threshold, the basic deviation coefficient, and the adjustment factor. Based on the updated warning threshold, the deviation range, and the current cumulative slippage angle of the coupling, a slippage fault warning is issued for the coupling.

[0022] As one possible implementation, the optimization module is further configured to: Obtain the current warning threshold for couplings of multiple wind turbines of the same type; A reference threshold is determined based on the current warning threshold of the couplings of multiple wind turbines of the same type and the number of wind turbines of the same type. The current warning thresholds for couplings of multiple wind turbines of the same type are adjusted according to the reference threshold.

[0023] Thirdly, embodiments of this application provide an electronic device, including: a processor, a storage medium, and a bus. The storage medium stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the storage medium via the bus, and the processor executes the machine-readable instructions to perform the steps of the coupling slippage fault early warning method as described in any of the first aspects above.

[0024] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the coupling slippage fault early warning method as described in any of the first aspects above.

[0025] The coupling slippage fault early warning method and electronic device according to embodiments of this application accurately calculate the total cumulative slippage angle of the coupling within a preset sampling period by real-time acquisition of the coupling's operating information. The calculated total cumulative slippage angle is then compared with a current early warning threshold to obtain the current early warning result, thereby achieving real-time monitoring and immediate early warning of slippage risk. Furthermore, this application verifies the accuracy of the current early warning result by introducing real slippage information obtained from on-site testing, thereby determining whether the current early warning threshold is reasonable. If unreasonable, the current early warning threshold is optimized and updated to obtain a new early warning threshold suitable for the current machine model and operating conditions, thus achieving health monitoring and timely early warning of the coupling. In this way, this application not only solves the shortcomings of existing technologies that rely on manual experience and are difficult to adapt to changing operating conditions, but also significantly reduces the false judgment rate while ensuring real-time early warning, achieving adaptive and accurate early warning of coupling slippage faults. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A flowchart illustrating a method for early warning of coupling slippage faults provided in an embodiment of this application is shown. Figure 2 A flowchart illustrating a method for determining the total cumulative slip angle provided in an embodiment of this application is shown. Figure 3 This diagram illustrates a flowchart of an early warning threshold optimization method provided in an embodiment of this application. Figure 4 A flowchart illustrating another method for early warning of coupling slippage faults provided in an embodiment of this application is shown. Figure 5 A flowchart illustrating a method for adjusting an early warning threshold provided in an embodiment of this application is shown; Figure 6 This paper shows a schematic diagram of the structure of a coupling slippage fault early warning device provided in an embodiment of this application; Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the accompanying drawings in this application are for illustrative and descriptive purposes only and are not intended to limit the scope of protection of this application. Furthermore, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate operations implemented according to some embodiments of this application. It should be understood that the operations in the flowcharts may not be implemented in sequence, and steps without logical contextual relationships may be reversed or implemented simultaneously. In addition, those skilled in the art, guided by the content of this application, may add one or more other operations to the flowcharts, or remove one or more operations from the flowcharts.

[0029] Furthermore, the described embodiments are merely some, not all, of the embodiments of this application. The components of the embodiments of this application described and illustrated herein can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that the term "comprising" will be used in the embodiments of this application to indicate the presence of the features declared thereafter, but does not exclude the addition of other features.

[0031] In existing technologies, monitoring of coupling slippage mainly adopts a post-incident inspection mode. When an abnormality occurs during unit operation, or when on-site personnel discover suspected signs of slippage during routine inspections, a detailed inspection of the coupling is then carried out. This approach obviously has the following drawbacks: (1) Lack of real-time performance: Inspections are only carried out after the unit has experienced abnormalities or performance degradation, making it difficult to detect early minor slippage in a timely manner, resulting in a lag. (2) Relying on manual judgment, with large errors and lag: Data processing relies on manual labor, which not only makes it impossible to perform continuous real-time calculations and has a certain lag, but also lacks a unified algorithm model for manual calculation. Manual calculation or measurement of slip angle has subjective errors, and the inspection results of different personnel may be inconsistent, making it difficult to ensure the consistency of calculation. (3) The judgment threshold is fixed and out of touch with the actual working conditions, and cannot be dynamically adapted to the actual working conditions: the pre-designed slippage warning threshold may differ from the actual working conditions on site. The existing manual inspection method cannot dynamically update the judgment basis of the slippage warning threshold. Furthermore, the design threshold of the coupling cannot reflect the actual operation restrictions under different working conditions, and cannot identify some situations that exceed the threshold but are usable, or that are abnormal even if they do not reach the threshold. (4) Unified monitoring of the entire site cannot be achieved: As the scale of wind farms expands, the reliance on manual judgment cannot meet the real-time health monitoring needs of large-scale units, and it is difficult to form a unified judgment standard and automated risk control capability. (5) Cannot support large-scale parallel data analysis: When there are many units, manual methods cannot perform concurrent calculations and monitoring of the slippage status of the couplings of multiple units, which cannot meet the needs of digitalization and centralized monitoring of wind farms.

[0032] To address the aforementioned problems in the prior art, this application provides a method for early warning of coupling slippage faults. This method involves real-time monitoring of the coupling's operating status and collecting its operating information to calculate the current cumulative slippage angle. Combining this with the current warning result, and further, through on-site testing of the coupling, the method determines whether the current warning threshold is reasonable based on the actual slippage information obtained from the on-site testing and the current warning result determined by real-time testing. If unreasonable, the threshold is optimized in a timely manner. This allows for health monitoring of the coupling with a reasonable warning threshold and provides accurate early warnings of coupling slippage. It is worth noting that the coupling slippage fault early warning method provided in this application is applicable to couplings of different models, and a reasonable warning threshold can be determined for each model to achieve accurate early warning.

[0033] The following provides a detailed description of the coupling slippage fault early warning method provided in the embodiments of this application.

[0034] Figure 1This paper presents a flowchart illustrating a method for early warning of coupling slippage faults according to an embodiment of this application. (Refer to...) Figure 1 As shown, the method specifically includes the following steps: S101. Determine the total cumulative slip angle of the coupling within the preset sampling period based on the operating information of the coupling within the preset sampling period.

[0035] Optionally, the preset sampling period can be, for example, 500-1000 milliseconds. Taking 1000 milliseconds as an example, within this preset sampling period, the operating information of the coupling can be collected at 100-millisecond intervals. This operating information includes the speed of the driving end and the speed of the driven end of the coupling. The preset sampling period and time interval settings here are only examples, and can be set according to the actual application situation, and are not limited to these.

[0036] Optionally, real-time speed data of the drive and driven ends of the coupling are collected within a preset sampling period. The instantaneous slip rate at each sampling moment is calculated based on the speed information, and the slip angle at each sampling moment is calculated by combining the instantaneous slip rate at each sampling moment. Based on this, the preset sampling period is divided into multiple unit time periods, and a layered accumulation strategy is adopted to sum the instantaneous slip angles of all sampling moments within a unit time period to obtain the cumulative value of the local slip angles for that unit time period. Then, the cumulative values ​​of the local slip angles for multiple consecutive unit time periods within the entire preset sampling period are summed again to obtain the total cumulative slip angle reflecting the overall slippage degree of the coupling within the preset sampling period.

[0037] S102. Determine the current warning result based on the total cumulative slip angle and the current warning threshold.

[0038] Optionally, the current warning result is used to indicate whether the coupling has slipped, specifically including three warning states: triggered warning, approaching threshold, and no warning. A triggered warning corresponds to coupling slippage, an approaching threshold corresponds to coupling impending slippage, and no warning corresponds to coupling not slipping. In this embodiment, if the total cumulative slippage angle is greater than the current warning threshold, it is determined that the coupling has slipped.

[0039] S103. Based on the current warning results and the actual slippage information of the coupling, determine whether to optimize the current warning threshold.

[0040] It is worth noting that this application uses actual slippage information obtained from actual testing to verify the accuracy of the current warning results, thereby determining whether the current warning threshold is reasonable. If it is not reasonable, the current warning threshold needs to be optimized.

[0041] Optionally, the actual slippage information is obtained through on-site testing of the coupling. If the current warning result indicates that the coupling has slipped, on-site personnel will conduct an on-site test to obtain the actual slippage information. This actual slippage information will then be used to assess the accuracy of the current warning result, thereby determining whether to optimize the current warning threshold. Specifically, if the actual slippage information matches the current warning result, meaning the warning is correct, then the current warning threshold is deemed reasonable and requires no optimization. Conversely, if the actual slippage information does not match the current warning result, meaning the warning is incorrect, then the current warning threshold is deemed unreasonable and requires optimization.

[0042] S104. If so, optimize the current warning threshold to obtain a new current warning threshold.

[0043] Optionally, if the current warning threshold is unreasonable, it needs to be further optimized. Specifically, the actual wear condition of the coupling is determined by on-site inspection to ascertain the actual slippage information of the coupling, and the on-site inspection results are compared with the current warning results to determine whether the warning is an accurate warning, a false alarm, or a missed alarm. Further, based on the judgment result, an adjustment amount is determined to adjust the current warning threshold, thereby obtaining a new current warning threshold.

[0044] It is worth noting that in this embodiment, the rationality of the adjusted new current warning threshold is verified to ensure that it always meets the threshold constraint conditions. Specifically, the updated warning threshold is optimized. Need to meet This threshold constraint is to prevent the warning threshold from deviating too much. Among other things, This represents the initial fixed value, that is, the pre-set theoretical threshold. It can be calculated based on the following expression (1): (1) in, Indicates the theoretical threshold. Indicates the number of full turns allowed by the coupling. This indicates the additional allowed angle, typically 30°, and the theoretical threshold. It needs to meet the requirement of greater than 10000°.

[0045] S105. If not, the current warning threshold will be used as the target warning threshold, and a slippage fault warning will be issued for the coupling based on the target warning threshold.

[0046] Optionally, if the current warning threshold is reasonable, it can be used as the target warning threshold for slippage fault warning of the coupling. Specifically, in the following continuous sampling cycles, the total cumulative slippage angle of the coupling is calculated in real time, and the total cumulative slippage angle is continuously compared with the target warning threshold. When the total cumulative slippage angle exceeds the target warning threshold, the corresponding warning signal is automatically triggered, thereby achieving accurate monitoring of the coupling's operating status.

[0047] Based on this, the coupling slippage fault early warning method according to the embodiments of this application accurately calculates the total cumulative slippage angle of the coupling within a preset sampling period by collecting the operating information of the coupling in real time. Then, the calculated total cumulative slippage angle is compared with the current early warning threshold to obtain the current early warning result, thereby realizing real-time monitoring and immediate early warning of slippage risk. Furthermore, this application verifies the accuracy of the current early warning result by introducing real slippage information obtained from on-site testing, thereby determining whether the current early warning threshold is reasonable. If unreasonable, the current early warning threshold is optimized and updated to obtain a new early warning threshold suitable for the current machine model and operating conditions, thus realizing health monitoring and timely early warning of the coupling. In this way, this application not only solves the shortcomings of the prior art that relies on manual experience and is difficult to adapt to changing operating conditions, but also significantly reduces the false judgment rate while ensuring the real-time nature of the early warning, achieving adaptive and accurate early warning of coupling slippage faults.

[0048] Figure 2 A flowchart illustrating a method for determining the total cumulative slip angle provided in an embodiment of this application is shown. (Refer to...) Figure 2 As shown, step S101 above determines the total cumulative slip angle of the coupling within the preset sampling period based on the coupling's operating information within the preset sampling period, specifically including the following steps: S201. Based on the operating information, determine the slip angle of the coupling at each sampling moment in the preset sampling period.

[0049] Optionally, for each sampling time, the slip angle at the sampling time is calculated based on the following formula (2): (2) in, Indicates the sampling time The angle of slippage, Indicates the sampling time Instantaneous slip rate, Indicates the sampling time The corresponding drive end speed of the coupling, Indicates the theoretical transmission ratio. Indicates the preset sampling period.

[0050] For example, instantaneous slip rate The following formula (3) is used to calculate: (3) in, Indicates the sampling time Instantaneous slip rate, Indicates the sampling time The corresponding drive end speed of the coupling, Indicates the sampling time The corresponding driven end speed of the coupling, This indicates the theoretical transmission ratio.

[0051] S202. Determine the total cumulative slip angle of the coupling within the preset sampling period based on the slip angle of the coupling at each sampling time.

[0052] Optionally, based on the slippage angle of the coupling at each sampling moment, the cumulative slippage angle of the coupling over multiple unit time intervals is determined, and the total cumulative slippage angle is obtained by summing the cumulative slippage angles of the coupling over multiple unit time intervals according to the unit time interval. Here, the unit time is, for example, 1 second.

[0053] It is worth noting that, based on the calculated slip angle at each sampling moment, this embodiment of the application sums up the slip angles corresponding to all sampling moments within a unit time according to the correspondence between the preset sampling period and the unit time, to obtain the cumulative slip angle within that unit time. Then, the cumulative slip angles of multiple consecutive unit times are accumulated to finally obtain the total cumulative slip angle within the entire preset sampling period.

[0054] Optionally, the cumulative slip angle of the coupling per unit time can be calculated based on the following formula (4): (4) in, Indicates the first The cumulative slip angle per unit time Indicates a specific sampling time. Indicates a specific sampling time The angle of slippage, Indicates the preset sampling period. , According to the preset sampling period And the unit time is determined, for example, by a preset sampling period. Taking 10 seconds as an example, with a unit time of 1 second, then It is 10.

[0055] Furthermore, by summing the cumulative slip angles of the coupling over multiple unit time periods, the total cumulative slip angle can be obtained, as shown in the following expression (5): (5) in, Indicates the total cumulative slip angle. Indicates the first The cumulative slip angle per unit time It indicates the quantity per unit of time.

[0056] Based on this, this application provides a layered accumulation mechanism for slippage angles. By summing the values ​​over a unit of time, it effectively smooths out interference caused by instantaneous speed fluctuations, avoiding misjudgments caused by a single abnormal instantaneous slippage value. Furthermore, by accumulating the accumulated slippage results over multiple consecutive unit times, it accurately reflects the total slippage of the coupling within a complete preset sampling period, providing a stable and reliable quantitative basis for subsequent threshold comparison and fault warning, thereby significantly improving the accuracy of slippage fault identification.

[0057] Figure 3 This diagram illustrates a flowchart of an early warning threshold optimization method provided in an embodiment of this application. (Refer to...) Figure 3 As shown, the above steps optimize the current warning threshold to obtain a new current warning threshold, specifically including the following steps: S301. Determine the correction coefficient based on the current warning results and actual skidding information.

[0058] Optionally, the actual slippage information is as shown in the inspection conclusions in Table 1, such as A (Good), B (Average), C (Poor), and D (Severe). The current warning result includes three states: triggered warning, approaching the threshold, and no warning. Based on this, the correction coefficient is determined by cross-comparing the actual slippage information with the current warning result. This is to quantitatively assess the accuracy of the early warning.

[0059] Table 1. Correction Factors for Results

[0060] Optionally, referring to Table 1 above, the corresponding correction coefficients can be matched according to different combinations. For example, if the current warning result indicates an alert has been triggered, but the actual inspection conclusion is A (good), then the current warning is determined to be a serious false alarm, and the corresponding correction factor is adjusted accordingly. If the current warning result is no warning but the actual proactive inspection conclusion is D (severe), it is considered a severe underreporting, and the corresponding correction factor is... .

[0061] S302. Optimize the current warning threshold using the correction coefficient to obtain a new current warning threshold.

[0062] Optionally, in determining the correction factor Then, firstly based on the correction coefficient The adjustment amount is calculated and then added to the current warning threshold to obtain the new current warning threshold. It is worth noting that the new current warning threshold... Need to meet This threshold constraint.

[0063] Optionally, the adjustment amount can be calculated based on the following formula (6). : (6) in, Indicates the adjustment amount. This indicates the actual cumulative slip angle when the warning is triggered. This indicates the preset learning rate. This represents the correction factor. In this embodiment, the preset learning rate is... It takes a value between 0.15 and 0.25.

[0064] Optionally, the new current warning threshold can be calculated based on the following formula (7): (7) in, This indicates the new current warning threshold. This represents the original current warning threshold. Indicates the adjustment amount.

[0065] Based on this, the embodiments of this application accurately map the qualitative conclusions of manual inspections to the warning status by comparing the results of on-site inspections with the current warning results, determine the correction coefficient, calculate the adjustment amount based on the correction coefficient, and add the adjustment amount to the current warning threshold. This allows the current warning threshold to be dynamically corrected based on the feedback of each actual slippage detection, and also ensures that the new current warning threshold after adjustment is always within a reasonable design range. Thus, while ensuring equipment safety, the accuracy and reliability of coupling slippage fault warnings are greatly improved.

[0066] Figure 4 A flowchart illustrating another coupling slippage fault early warning method provided in an embodiment of this application is shown. (Refer to...) Figure 4 As shown, the method specifically includes the following steps: S401, Get the current cumulative slip angle of the coupling.

[0067] Optionally, ten preset sampling periods can be used as an accumulation period to obtain the current cumulative slip angle of the coupling. For example, the current cumulative slip angle of the coupling can be collected once every ten slip fault warnings.

[0068] S402. Update the current warning threshold based on the false alarm correction coefficient and the missed alarm correction coefficient to obtain the updated warning threshold.

[0069] Optionally, in the embodiments of this application, the false alarm correction coefficient Values ​​between 0.08 and 0.12 are considered as a correction factor for underreporting. It takes a value between 0.2 and 0.3.

[0070] Optionally, taking the current cumulative slip angle corresponding to ten preset sampling periods as an example, after sampling and warning for ten preset sampling periods, ten warning results can be obtained, and the corresponding false alarm rate can be determined based on the accuracy of the ten warning results. and underreporting rate .

[0071] Furthermore, it can be based on the false alarm correction coefficient. Underreporting correction factor False alarm rate and underreporting rate Update the current warning threshold to obtain the updated warning threshold. Specifically, the updated warning threshold is calculated based on the following formula (8): (8) in, This indicates the updated warning threshold. Indicates the current warning threshold. This represents the false alarm correction factor. Indicates the false alarm rate. This represents the underreporting correction factor. This indicates the underreporting rate.

[0072] S403. Determine the deviation range based on the updated warning threshold, basic deviation coefficient, and adjustment factor.

[0073] Alternatively, the deviation range can be calculated based on the following formula (9): (9) in, Indicates deviation from the range. This indicates the updated warning threshold. Indicates the basic deviation coefficient. This represents the adjustment factor.

[0074] Optionally, in the embodiments of this application, the above-mentioned basic deviation coefficient It can take values ​​between 0.2 and 0.3.

[0075] Optionally, the above adjustment factors The following formula (10) is used to calculate: (10) in, Indicates the adjustment factor. This represents the cumulative standard deviation of the slip angle over a specified time interval. This represents the average cumulative slip angle and the standard deviation of the cumulative slip angle over a specified time interval. and the average cumulative slip angle This comprehensively reflects the fluctuation of the cumulative slip angle. Continuing with the example of the current cumulative slip angle corresponding to ten preset sampling periods, the specified time interval is also the time interval corresponding to the ten preset sampling periods.

[0076] S404. Based on the updated warning threshold, deviation range, and the current cumulative slippage angle of the coupling, a slippage fault warning is issued for the coupling.

[0077] Optionally, based on the updated warning threshold and deviation range The system continuously monitors the slippage angle of the coupling and triggers a prompt or alarm when it exceeds a certain range, thereby achieving early warning of coupling slippage faults. In the embodiments of this application, respectively using... , Define the boundaries to determine the circumstances that trigger prompts or alarms.

[0078] For example, if the current cumulative slip angle If so, the coupling is normal. Current cumulative slip angle If the coupling slippage angle is close to the warning threshold, a prompt will be triggered. If the current cumulative slippage angle is close to the warning threshold, a prompt will be triggered. If this occurs, it indicates that the coupling has slipped, triggering an alarm.

[0079] Based on this, the embodiments of this application detect the current cumulative slippage angle of the coupling in real time. By introducing false alarm correction coefficients and false alarm correction coefficients, and combining the false alarm rate and false alarm rate of historical warning results, the current warning threshold is dynamically updated to adapt to complex and ever-changing actual working conditions, thereby effectively reducing the false alarm rate and false alarm rate of subsequent warnings. In addition, this application determines the deviation range by introducing a basic deviation coefficient and an adjustment factor calculated based on the fluctuation of the cumulative slippage angle, realizing adaptive adjustment of the warning boundary, thereby enabling precise monitoring and graded warning of the coupling's operating status.

[0080] Figure 5A flowchart illustrating a method for adjusting an early warning threshold according to an embodiment of this application is shown. (Refer to...) Figure 5 As shown, the method specifically includes the following steps: S501. Obtain the current warning threshold of couplings for multiple wind turbines of the same type.

[0081] Optionally, fans that are under the same operating conditions and of the same model can be considered as fans of the same type, and the current warning threshold of the couplings of these multiple fans of the same type can be collected.

[0082] S502. Determine a reference threshold based on the current warning threshold of the couplings of multiple wind turbines of the same type and the number of wind turbines of the same type.

[0083] Optionally, multiple wind turbines of the same type can be grouped together, while each wind turbine can be treated as an individual. Based on this, this application can determine a global reference threshold by calculating the group mean. This reference threshold, as a quantitative expression of the group's experience, can be used to guide the reasonable adjustment of individual warning thresholds.

[0084] For example, the reference threshold is calculated based on the following formula (11): (11) in, Indicates the reference threshold. Indicates the first The current warning threshold for the typhoon turbine coupling. This indicates the number of fans of the same type.

[0085] S503. Adjust the current warning threshold of the couplings of multiple wind turbines of the same type according to the reference threshold.

[0086] Optionally, the reference threshold is calculated based on the above formula (11). Then, for each wind turbine, a new warning threshold can be calculated based on the following formula (12) to adjust the original current warning threshold: (12) in, This indicates the new warning threshold. This represents the original current warning threshold. This indicates that the individual retains a weight. This represents a reference threshold. In this embodiment, the individual retention weight can be between 0.7 and 0.8.

[0087] It is worth noting that after obtaining the group reference threshold, for each individual wind turbine, this application performs weighted fusion adjustment on its current warning threshold according to the above formula (12), so that the warning threshold of each wind turbine retains the personalized characteristics formed based on its own operating characteristics, and also absorbs the common experience of the group under similar operating conditions.

[0088] Based on this, the embodiments of this application collect the early warning thresholds of wind turbines of the same type and calculate the group reference threshold. Then, the individual early warning thresholds are adjusted by weighted fusion. This ensures that the early warning thresholds of each wind turbine retain their own individual characteristics while also drawing on the common experience of the group under similar operating conditions. This effectively avoids deviations in early warning thresholds caused by individual data fluctuations or occasional anomalies, thereby improving the consistency of coupling slippage early warnings across the entire field and achieving precise collaborative early warning at the group level.

[0089] Based on the same inventive concept, this application also provides a coupling slippage fault warning device corresponding to the coupling slippage fault warning method. Since the principle of solving the problem by the coupling slippage fault warning device in this application is similar to the coupling slippage fault warning method described above in this application, the implementation of the coupling slippage fault warning device can refer to the implementation of the coupling slippage fault warning method, and the repeated parts will not be described again.

[0090] Reference Figure 6 The diagram shown is a structural schematic of a coupling slippage fault early warning device provided in an embodiment of this application. The coupling slippage fault early warning device 600 includes: a first determining module 601, a second determining module 602, a third determining module 603, an optimization module 604, and an early warning module 605, wherein: The first determining module 601 is used to determine the total cumulative slip angle of the coupling within the preset sampling period based on the operating information of the coupling within the preset sampling period. The second determining module 602 is used to determine the current warning result based on the total cumulative slip angle and the current warning threshold. The current warning result is used to indicate whether the coupling has slipped. The third determining module 603 is used to determine whether to optimize the current warning threshold based on the current warning result and the actual slippage information of the coupling. The actual slippage information is obtained by conducting on-site testing of the coupling. The optimization module 604 is used to optimize the current warning threshold if the condition is met, and obtain a new current warning threshold. The early warning module 605 is used to, if not, take the current early warning threshold as the target early warning threshold and provide early warning of slippage fault for the coupling based on the target early warning threshold.

[0091] Based on this, the coupling slippage fault early warning device according to the embodiments of this application accurately calculates the total cumulative slippage angle of the coupling within a preset sampling period by collecting the operating information of the coupling in real time. Then, the calculated total cumulative slippage angle is compared with the current early warning threshold to obtain the current early warning result, thereby achieving real-time monitoring and immediate early warning of slippage risk. Furthermore, this application verifies the accuracy of the current early warning result by introducing real slippage information obtained from on-site testing, thereby determining whether the current early warning threshold is reasonable. If unreasonable, the current early warning threshold is optimized and updated to obtain a new early warning threshold suitable for the current machine model and operating conditions, thus achieving health monitoring and timely early warning of the coupling. In this way, this application not only solves the shortcomings of the prior art that relies on manual experience and is difficult to adapt to changing operating conditions, but also significantly reduces the false judgment rate while ensuring the real-time nature of the early warning, achieving adaptive and accurate early warning of coupling slippage faults.

[0092] In one possible implementation, the first determining module 601 described above is specifically used for: Based on the operating information, determine the slip angle of the coupling at each sampling moment in the preset sampling period. The operating information includes the speed of the driving end of the coupling and the speed of the driven end of the coupling. The total cumulative slip angle of the coupling within the preset sampling period is determined based on the slip angle of the coupling at each sampling time.

[0093] In one possible implementation, the first determining module 601 is specifically used for: Based on formula The slip angle at the sampling time is calculated; in, Indicates the sampling time The angle of slippage, Indicates the sampling time Instantaneous slip rate, instantaneous slip rate , Indicates the sampling time The corresponding drive end speed of the coupling, Indicates the sampling time The corresponding driven end speed of the coupling, Indicates the theoretical transmission ratio. Indicates the preset sampling period.

[0094] In one possible implementation, the first determining module 601 is specifically used for: Based on the slip angle of the coupling at each sampling time, determine the cumulative slip angle of the coupling over multiple unit time periods. The total cumulative slip angle is obtained by summing the cumulative slip angles of the coupling over multiple unit time periods.

[0095] In one possible implementation, the first determining module 601 is specifically used for: Based on formula The cumulative slip angle of the coupling per unit time is calculated; in, Indicates the first The cumulative slip angle per unit time Indicates a specific sampling time. Indicates a specific sampling time The angle of slippage, Indicates the preset sampling period. , According to the preset sampling period The unit of time is determined.

[0096] In one possible implementation, the optimization module 604 is specifically used for: Based on the current warning results and actual slippage information, determine the correction coefficient; The current warning threshold is optimized using a correction coefficient to obtain a new current warning threshold.

[0097] In one possible implementation, the optimization module 604 is specifically used for: Based on formula The new current warning threshold is calculated; in, This indicates the new current warning threshold. This represents the original current warning threshold. Indicates the adjustment amount. , This indicates the actual cumulative slip angle when the warning is triggered. This indicates the preset learning rate. This represents the correction factor.

[0098] In one possible implementation, the aforementioned early warning module 605 is further configured to: Get the current cumulative slip angle of the coupling; The current warning threshold is updated based on the false alarm correction coefficient and the false alarm correction coefficient to obtain the updated warning threshold. The deviation range is determined based on the updated warning threshold, the basic deviation coefficient, and the adjustment factor; Based on the updated warning threshold, deviation range, and the current cumulative slippage angle of the coupling, a slippage fault warning is issued for the coupling.

[0099] In one possible implementation, the optimization module 604 is further configured to: Obtain the current warning threshold for couplings of multiple wind turbines of the same type; A reference threshold is determined based on the current warning threshold of the couplings of multiple wind turbines of the same type and the number of wind turbines of the same type. The current warning thresholds for couplings of multiple wind turbines of the same type are adjusted based on reference thresholds.

[0100] The processing flow of each module in the device and the interaction flow between each module can be referred to the relevant descriptions in the above method embodiments, and will not be detailed here.

[0101] This application also provides an electronic device 700, such as... Figure 7 The diagram shown is a structural schematic of an electronic device 700 provided in an embodiment of this application, including: a processor 701 and a memory 702, and optionally, a bus 703. The memory 702 stores machine-readable instructions executable by the processor 701. When the electronic device 700 is running, the processor 701 and the memory 702 communicate via the bus 703. When the machine-readable instructions are executed by the processor 701, the steps of the coupling slippage fault early warning method described in any of the preceding claims are executed.

[0102] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the steps of the coupling slippage fault early warning method as described in any of the preceding claims.

[0103] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems and devices described above can be referred to the corresponding processes in the method embodiments, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some communication interfaces; the indirect coupling or communication connection of devices or modules can be electrical, mechanical, or other forms.

[0104] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. If the functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0105] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A method for early warning of coupling slippage faults, characterized in that, include: Based on the operating information of the coupling within a preset sampling period, the total cumulative slip angle of the coupling within the preset sampling period is determined; Based on the total cumulative slip angle and the current warning threshold, the current warning result is determined, and the current warning result is used to indicate whether the coupling has slipped. Based on the current warning result and the actual slippage information of the coupling, it is determined whether to optimize the current warning threshold. The actual slippage information is obtained by conducting on-site testing of the coupling. If so, the current warning threshold is optimized to obtain a new current warning threshold; If not, the current warning threshold is used as the target warning threshold, and the coupling is given a slippage fault warning based on the target warning threshold.

2. The method according to claim 1, characterized in that, The step of determining the total cumulative slip angle of the coupling within the preset sampling period based on the coupling's operating information within the preset sampling period includes: Based on the operating information, the slip angle of the coupling is determined at each sampling moment in the preset sampling period. The operating information includes the speed of the driving end of the coupling and the speed of the driven end of the coupling. The total cumulative slip angle of the coupling within the preset sampling period is determined based on the slip angle of the coupling at each sampling time.

3. The method according to claim 2, characterized in that, The step of determining the slip angle of the coupling at each sampling moment in the preset sampling period based on the operating information includes: Based on formula The slip angle at the sampling time is calculated; in, Indicates the sampling time The angle of slippage, Indicates the sampling time Instantaneous slip rate, instantaneous slip rate , Indicates the sampling time The corresponding drive end speed of the coupling, Indicates the sampling time The corresponding driven end speed of the coupling, Indicates the theoretical transmission ratio. This indicates the preset sampling period.

4. The method according to claim 2, characterized in that, The step of determining the total cumulative slip angle of the coupling within the preset sampling period based on the slip angle of the coupling at each sampling moment includes: Based on the slip angle of the coupling at each sampling time, the cumulative slip angle of the coupling over multiple unit time periods is determined. The total cumulative slip angle is obtained by summing the cumulative slip angles of the coupling over multiple unit time periods.

5. The method according to claim 4, characterized in that, The step of determining the cumulative slip angle of the coupling over multiple unit time periods based on the slip angle of the coupling at each sampling time includes: Based on formula The cumulative slip angle of the coupling per unit time is calculated; in, Indicates the first The cumulative slip angle per unit time Indicates a specific sampling time. Indicates a specific sampling time The angle of slippage, Indicates the preset sampling period. , According to the preset sampling period The unit of time is determined.

6. The method according to claim 1, characterized in that, The optimization of the current warning threshold to obtain a new current warning threshold includes: Based on the current warning results and the actual slippage information, determine the correction coefficient; The current warning threshold is optimized using the correction coefficient to obtain a new current warning threshold.

7. The method according to claim 6, characterized in that, The step of optimizing the current warning threshold using the correction coefficient to obtain a new current warning threshold includes: Based on formula The new current warning threshold is calculated; in, This indicates the new current warning threshold. This represents the original current warning threshold. Indicates the adjustment amount. , This indicates the actual cumulative slip angle when the warning is triggered. This indicates the preset learning rate. This represents the correction factor.

8. The method according to claim 1, characterized in that, The method further includes: Obtain the current cumulative slip angle of the coupling; The current warning threshold is updated based on the false alarm correction coefficient and the false miss correction coefficient to obtain the updated warning threshold. The deviation range is determined based on the updated warning threshold, the basic deviation coefficient, and the adjustment factor. Based on the updated warning threshold, the deviation range, and the current cumulative slippage angle of the coupling, a slippage fault warning is issued for the coupling.

9. The method according to claim 1, characterized in that, The method further includes: Obtain the current warning threshold for couplings of multiple wind turbines of the same type; A reference threshold is determined based on the current warning threshold of the couplings of multiple wind turbines of the same type and the number of wind turbines of the same type. The current warning thresholds for couplings of multiple wind turbines of the same type are adjusted according to the reference threshold.

10. An electronic device, characterized in that, include: The device includes a processor and a memory, the memory storing machine-readable instructions executable by the processor, which, when the electronic device is in operation, are executed by the processor to perform the steps of the coupling slippage fault warning method as described in any one of claims 1 to 9.

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