Fan standby state judgment method and related device

Abstract

The invention belongs to the technical field of fan fault judgment, and particularly relates to a fan standby state judgment method and related device.The method comprises the steps that yaw angle monitoring data of a to-be-detected fan are collected and cleaned, and yaw angle data are obtained; judging whether the yaw angle data is within a preset yaw angle threshold range or not; if yes, the to-be-tested fan is in a non-yaw standby state; if not, whether the yaw angle deviation value in the preset time period exceeds a preset angle deviation threshold value or not is compared; if the yaw angle deviation value in the preset time period exceeds a preset angle deviation threshold value, the to-be-tested fan is in a yaw standby state; according to the method, dual judgment of the yaw angle threshold value and the angle deviation threshold value is combined, the standby state of the draught fan can be recognized more accurately, and misjudgment and missed judgment are avoided; through automatic monitoring and judgment, the frequency and difficulty of manual inspection can be reduced, and the convenience and efficiency of maintenance are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fan fault judgment, and in particular relates to a fan standby state judgment method and related devices. Background Art

[0002] A wind turbine is a power generation device that converts wind energy into electrical energy. Its efficiency directly affects the cost and benefits of electricity production. During the operation of the wind turbine, accurately judging the state changes of the wind turbine will have an important impact on the power generation efficiency. In the standby state, the wind turbine will not generate power but will still consume a certain amount of energy. Therefore, judging the standby state of the wind turbine will help to reasonably control the operation of the wind turbine to save energy and reduce unnecessary equipment wear. In addition, accurate standby state judgment can also help operators better understand the operating status of the wind turbine and promptly discover and deal with potential problems.

[0003] At present, the existing method for judging the yaw standby state of a wind turbine usually adopts the method of setting a manual unwinding signal sensor and an automatic unwinding signal sensor at the nacelle and blade position of the wind turbine, and monitoring the signals of the manual unwinding signal sensor and the automatic unwinding signal sensor in real time to judge whether the wind turbine is in the yaw standby state; however, when judging the state of the wind turbine by monitoring the manual unwinding signal sensor and the automatic unwinding signal sensor, there is often a serious lag, which seriously affects the real-time and accuracy of the judgment of the standby state of the wind turbine. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a method and related device for judging the standby state of a wind turbine, so as to solve the technical problem that the existing method for judging the yaw standby state of a wind turbine has serious lag, which seriously affects the real-time and accuracy of the standby state judgment of the wind turbine.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a method for determining a standby state of a fan, comprising: Collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain yaw angle data; Determine whether the yaw angle data is within a preset yaw angle threshold range; if so, the wind turbine to be tested is in a non-yaw standby state; if not, compare whether the yaw angle deviation value within a preset time period exceeds a preset angle deviation threshold; If the yaw angle deviation value exceeds a preset angle deviation threshold within a preset time period, the wind turbine to be tested is in a yaw standby state.

[0006] Furthermore, the process of collecting and cleaning the yaw angle monitoring data of the wind turbine to be tested to obtain the yaw angle data is as follows: Read the twist cable angle collector installed on the wind turbine to be tested to obtain the real-time yaw angle data of the wind turbine to be tested; The real-time yaw angle data of the wind turbine to be tested is subjected to outlier processing and missing value filling to obtain the yaw angle data.

[0007] Furthermore, the process of determining whether the yaw angle data is within a preset yaw angle threshold range is as follows: Comparing the yaw angle data with an upper limit value of a preset yaw angle threshold range; If the yaw angle data is less than an upper limit value of a preset yaw angle threshold range, comparing the yaw angle data with a lower limit value of the preset yaw angle threshold range; If the yaw angle data is greater than a lower limit value of a preset yaw angle threshold range, the yaw angle data is within the preset yaw angle threshold range.

[0008] Further, the upper limit value of the preset yaw angle threshold range is 300°, and the lower limit value of the preset yaw angle threshold range is -300°.

[0009] Furthermore, the yaw angle deviation value within the preset time period is specifically: a difference between a maximum value and a minimum value in the yaw angle data within the preset time period.

[0010] Furthermore, the preset time period is 10 minutes, and the preset angle deviation threshold is 80 degrees.

[0011] The present invention also provides a fan standby state judgment system, comprising: A data acquisition module is used to collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain yaw angle data; A first judgment module, used to judge whether the yaw angle data is within a preset yaw angle threshold range; The second judgment module is used to determine whether the wind turbine to be tested is in a non-yaw standby state if yes; if not, to compare whether the yaw angle deviation value within a preset time period exceeds a preset angle deviation threshold; The result output module is used to put the wind turbine to be tested in a yaw standby state if the yaw angle deviation value exceeds a preset angle deviation threshold value within a preset time period.

[0012] The present invention also provides a device for determining a standby state of a fan, comprising: a processor suitable for executing a computer program; A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, the method for determining the standby state of the fan is executed.

[0013] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for determining the standby state of a fan is implemented.

[0014] The present invention also provides a computer program product, characterized in that the computer program product comprises a computer program, and when the computer program is executed by a processor, the method for determining the standby state of a wind turbine is implemented.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The method for judging the standby state of a wind turbine provided by the present invention can eliminate noise and abnormal values ​​and ensure the accuracy and reliability of the data by collecting and cleaning yaw angle monitoring data; since the yaw angle can directly reflect the wind state and yaw behavior of the wind turbine, combined with the dual judgment of the yaw angle threshold and the angle deviation threshold, the standby state of the wind turbine can be identified more accurately to avoid misjudgment and missed judgment; secondly, the judgment method based on the yaw angle can more stably reflect the actual state of the wind turbine and greatly reduce the misjudgment caused by inaccurate parameter measurement or interference from environmental factors; through automated monitoring and judgment, the frequency and difficulty of manual inspections can be reduced, and the convenience and efficiency of maintenance can be improved; secondly, through continuous monitoring and judgment, the yaw condition of the wind turbine can be discovered in time, and corresponding measures can be taken to ensure the normal operation and stability of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A flow chart of the method for determining the standby state of a fan provided in Example 1; Figure 2 A structural block diagram of a fan standby state determination system provided in Example 2; Figure 3 This is a structural block diagram of the fan standby state judgment device provided in Example 3. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects solved by this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in combination with the drawings in the embodiments of this application; obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] Example 1 As attached Figure 1 As shown, this embodiment 1 provides a method for determining a standby state of a fan, comprising the following steps: Step 1, collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain the yaw angle data. Specifically, install a twist cable angle collector on the nacelle of the wind turbine to be tested; read the twist cable angle collector installed on the wind turbine to be tested to obtain the real-time yaw angle data of the wind turbine to be tested; perform outlier processing and missing value filling on the real-time yaw angle data of the wind turbine to be tested to obtain the yaw angle data; wherein, when performing outlier processing, the 3σ principle is used to screen the real-time yaw angle data of the wind turbine to be tested; for the detected outliers, select to delete and repair; when filling missing values ​​or repairing outliers, interpolation, mean filling or regression filling methods are used for processing.

[0020] It should be noted that by pre-installing a wind speed sensor and an azimuth sensor on the wind turbine to be tested, the wind speed in the environment and the direction angle of the wind turbine to be tested are measured, and the yaw angle data is auxiliary verified based on the collected wind speed and the direction angle of the wind turbine to be tested to ensure the authenticity and accuracy of the data.

[0021] Step 2: Determine whether the yaw angle data is within a preset yaw angle threshold range. Specifically, the implementation steps for determining whether the yaw angle data is within a preset yaw angle threshold range are as follows: Step 21: Compare the yaw angle data with an upper limit value of a preset yaw angle threshold range. Preferably, the upper limit value of the preset yaw angle threshold range is 300°.

[0022] Step 22: If the yaw angle data is less than the upper limit of the preset yaw angle threshold range, jump to step 23; otherwise, jump to step 3.

[0023] Step 23: Compare the yaw angle data with a preset lower limit of the yaw angle threshold range. Preferably, the preset lower limit of the yaw angle threshold range is -300°.

[0024] Step 24: If the yaw angle data is greater than the lower limit of the preset yaw angle threshold range, the yaw angle data is within the preset yaw angle threshold range, and the wind turbine to be tested is in a non-yaw standby state; otherwise, jump to step 3.

[0025] Step 3: Compare whether the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold. The yaw angle deviation value within the preset time period is specifically: the difference between the maximum value and the minimum value in the yaw angle data within the preset time period; preferably, the preset time period is 10 minutes, and the preset angle deviation threshold is 80°.

[0026] Step 4: If the yaw angle deviation value exceeds a preset angle deviation threshold value within a preset time period, the wind turbine to be tested is in a yaw standby state.

[0027] The method for judging the standby state of a wind turbine described in the present invention can achieve accurate judgment of the standby state of the wind turbine by collecting, cleaning and analyzing the yaw angle monitoring data of the wind turbine to be tested; wherein, since the yaw angle can directly reflect the wind state and yaw behavior of the wind turbine, by real-time monitoring the yaw angle data of the wind turbine, once it is found that the yaw angle exceeds the preset range or the deviation value exceeds the threshold, it can be immediately judged that the wind turbine is in a non-yaw standby state or a yaw standby state, which can more stably reflect the actual state of the wind turbine; the present invention monitors the yaw angle data in real time to accurately judge the yaw standby state, thereby helping operators to promptly discover and deal with potential problems; it should be noted that the preset yaw angle threshold and angle deviation threshold can be adjusted according to actual conditions to meet the needs of different fans and working environments, thereby enhancing the flexibility and stability of the system.

[0028] Example 2 As attached Figure 2 As shown, this embodiment 2 provides a wind turbine standby state judgment system, including a data acquisition module, a first judgment module, a second judgment module and a result output module.

[0029] The data acquisition module is used to collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain the yaw angle data. The first judgment module is used to judge whether the yaw angle data is within the preset yaw angle threshold range. The second judgment module is used to compare whether the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold. The result output module is used to determine that if the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold, the wind turbine to be tested is in the yaw standby state.

[0030] Example 3 As attached Figure 3As shown, this embodiment 3 provides a device for determining a standby state of a fan, comprising: a memory for storing a computer program; and a processor for implementing the steps of a method for determining a standby state of a fan when executing the computer program.

[0031] When the processor executes the computer program, the steps of the above-mentioned method for determining the standby state of the fan are implemented, for example: The yaw angle monitoring data of the wind turbine to be tested is collected and cleaned to obtain yaw angle data; whether the yaw angle data is within a preset yaw angle threshold range is determined; whether the yaw angle deviation value within a preset time period exceeds a preset angle deviation threshold is compared; if the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold, the wind turbine to be tested is in a yaw standby state.

[0032] Alternatively, when the processor executes the computer program, the functions of each module in the above-mentioned wind turbine standby state judgment system are realized, for example: The data acquisition module is used to collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain the yaw angle data. The first judgment module is used to judge whether the yaw angle data is within the preset yaw angle threshold range. The second judgment module is used to compare whether the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold. The result output module is used to determine that if the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold, the wind turbine to be tested is in the yaw standby state.

[0033] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing preset functions, and the instruction segments are used to describe the execution process of the computer program in the wind turbine standby state judgment device.

[0034] For example, the computer program can be divided into a data acquisition module, a first judgment module, a second judgment module and a result output module, and the specific functions of each module are as follows: the data acquisition module is used to collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain the yaw angle data. The first judgment module is used to judge whether the yaw angle data is within a preset yaw angle threshold range. The second judgment module is used to compare whether the yaw angle deviation value within a preset time period exceeds a preset angle deviation threshold. The result output module is used to determine that if the yaw angle deviation value within a preset time period exceeds a preset angle deviation threshold, the wind turbine to be tested is in a yaw standby state.

[0035] The fan standby state judgment device may be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The fan standby state judgment device may include, but is not limited to, a processor and a memory. Those skilled in the art may understand that the above is an example of a fan standby state judgment device and does not constitute a limitation on the fan standby state judgment device. It may include more components than the above, or a combination of certain components, or different components. For example, the fan standby state judgment device may also include input and output devices, network access devices, buses, etc.

[0036] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processor is the control center of the wind turbine standby state judgment device, and uses various interfaces and lines to connect various parts of the entire wind turbine standby state judgment device.

[0037] The memory can be used to store the computer program and / or module, and the processor implements various functions of the wind turbine standby state judgment device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0038] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0039] Example 4 This embodiment 4 further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for determining the standby state of a wind turbine are implemented, for example: The yaw angle monitoring data of the wind turbine to be tested is collected and cleaned to obtain yaw angle data; whether the yaw angle data is within a preset yaw angle threshold range is determined; whether the yaw angle deviation value within a preset time period exceeds a preset angle deviation threshold is compared; if the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold, the wind turbine to be tested is in a yaw standby state.

[0040] If the module / unit integrated in the fan standby state judgment system is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.

[0041] Based on such understanding, the present invention implements all or part of the processes in the above-mentioned method for determining the standby state of a fan, and can also be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned method for determining the standby state of a fan can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or preset intermediate form, etc.

[0042] The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0043] It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electrical carrier signals and telecommunication signals.

[0044] Example 5 This embodiment 5 provides a computer product, which computer program product includes a computer program, which is stored in a computer-readable storage medium; the processor of the fan standby state judgment device reads the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the fan standby state judgment device can execute the fan standby state judgment method described in embodiment 1, which will not be repeated here.

[0045] It should be noted that a person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods.

[0046] The method for determining the standby state of a wind turbine of the present invention allows the user to directly write or introduce JavaScript scripts, so that the system can process and analyze data in real time, implement complex logic and algorithms, and thus adapt to changing application requirements. This method simplifies the data processing process, improves efficiency, and provides an intuitive way for non-programmers to enhance the data processing capability of the system without having to delve into the internal structure of the system, thereby reducing development and maintenance costs.

[0047] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. A method for determining a standby state of a fan, characterized in that: include: Collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain yaw angle data; Determine whether the yaw angle data is within a preset yaw angle threshold range; if so, the wind turbine to be tested is in a non-yaw standby state; If not, then comparing whether the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold; If the yaw angle deviation value exceeds a preset angle deviation threshold within a preset time period, the wind turbine to be tested is in a yaw standby state.

2. A method for determining a standby state of a fan according to claim 1, characterized in that: The process of collecting and cleaning the yaw angle monitoring data of the wind turbine to be tested and obtaining the yaw angle data is as follows: Read the twist cable angle collector installed on the wind turbine to be tested to obtain the real-time yaw angle data of the wind turbine to be tested; The real-time yaw angle data of the wind turbine to be tested is subjected to outlier processing and missing value filling to obtain the yaw angle data.

3. A method for determining a standby state of a fan according to claim 1, characterized in that: The process of determining whether the yaw angle data is within a preset yaw angle threshold range is as follows: Comparing the yaw angle data with an upper limit value of a preset yaw angle threshold range; If the yaw angle data is less than an upper limit value of a preset yaw angle threshold range, comparing the yaw angle data with a lower limit value of the preset yaw angle threshold range; If the yaw angle data is greater than a lower limit value of a preset yaw angle threshold range, the yaw angle data is within the preset yaw angle threshold range.

4. A method for determining a standby state of a wind turbine according to claim 3, characterized in that: The upper limit value of the preset yaw angle threshold range is 300°, and the lower limit value of the preset yaw angle threshold range is -300°.

5. A method for determining a standby state of a wind turbine according to claim 1, characterized in that: The yaw angle deviation value within the preset time period is specifically: the difference between the maximum value and the minimum value in the yaw angle data within the preset time period.

6. A method for determining a wind turbine standby state according to claim 5, characterized in that: The preset time period is 10 minutes, and the preset angle deviation threshold is 80°.

7. A fan standby state judgment system, characterized in that: include: A data acquisition module is used to collect and clean the yaw angle monitoring data of the wind turbine to be tested to obtain yaw angle data; A first judgment module, used to judge whether the yaw angle data is within a preset yaw angle threshold range; The second judgment module is used for: if yes, the wind turbine to be tested is in a non-yaw standby state; If not, then comparing whether the yaw angle deviation value within the preset time period exceeds the preset angle deviation threshold; The result output module is used to put the wind turbine to be tested in a yaw standby state if the yaw angle deviation value exceeds a preset angle deviation threshold value within a preset time period.

8. A device for determining the standby state of a fan, characterized in that: include: a processor suitable for executing a computer program; A computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, the method for determining the standby state of a wind turbine according to any one of claims 1 to 6 is executed.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for determining the standby state of a wind turbine as described in any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method for determining the standby state of a wind turbine as claimed in any one of claims 1 to 6 is implemented.

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