Wind generating set suffered standby judgment method and related device

By monitoring the power collector wire break signal in real time and collecting wind turbine operation data, the problem of manual inspection lag in the existing technology is solved, and fast and accurate investigation of involvement standby judgment is achieved, reducing power generation losses and improving operation and maintenance efficiency.

CN119844311APending Publication Date: 2025-04-18BEIJING HUANENG XINRUI CONTROL TECH
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Patent Information

Application Number
CN202510077599.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2025-04-18

AI Technical Summary

Technical Problem

In the prior art, manual inspection is used to judge the affected standby state of the wind turbine unit, which has serious lag and cannot detect the acceptance standby phenomenon of the wind turbine unit in time, greatly increasing the power generation loss caused by standby.

Method used

By monitoring the shutdown signal of the collector wire in real time, if the shutdown signal is monitored and the duration exceeds the preset time threshold, the operating data of each wind turbine under the collector wire is collected and compared with the unit operation data threshold to determine whether it is in the affected standby state.

Benefits of technology

It realizes the rapid and accurate judgment of the affected standby state of the wind turbine unit, timely discover the standby situation, reduce power generation losses, and improve operation and maintenance efficiency.

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Abstract

The invention belongs to the technical field of wind power generation, and particularly relates to a wind generating set affected standby judgment method and a related device, and the method comprises the following steps: monitoring a switch-off signal of a current collection wire in real time; if the switching-off signal of the current collection line is monitored and the duration of the switching-off signal of the current collection line exceeds a preset time threshold value, collecting operation data of each wind generating set under the current collection line; comparing the collected operation data of each wind generating set with a set operation data threshold value to obtain an operation data comparison result; according to the operation data comparison result, whether each wind generating set under the current collection line is in an affected standby state or not is determined, and an affected standby judgment result of the wind generating sets is obtained; according to the method, the affected standby condition of the wind generating set can be found in time, and the power generation loss caused by standby is reduced; restoration measures can be taken quickly, and the overall operation efficiency of the wind power plant is improved.
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Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a method for judging the standby state of a wind power generator set and a related device. Background Art

[0002] A wind turbine is a device that converts wind energy into electrical energy. It captures wind energy through wind rotors and converts it into mechanical energy, which is then converted into electrical energy through a generator. The energy is finally gathered and transmitted to a substation or booster station through a collector connected to the wind turbine. In a wind farm, the stable operation of wind turbines is crucial to power generation. However, due to grid failures or line maintenance, the collector may be disconnected, causing some wind turbines to be put on standby, which in turn affects power generation efficiency and equipment life.

[0003] At present, manual inspection is usually used to judge the standby status of wind turbines, which has serious lag and cannot detect the standby phenomenon of wind turbines in time, greatly increasing the power generation loss caused by standby. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a method and related devices for judging the impaired standby state of a wind turbine generator set, so as to solve the technical problem that the prior art uses manual inspection to judge the impaired standby state of a wind turbine generator set, which has serious lag and cannot timely detect the impaired standby state of the wind turbine generator set, greatly increasing the power generation loss caused by standby state.

[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 whether a wind turbine generator set is in standby state, comprising: Monitor the disconnection signal of the collector line in real time; If the disconnection signal of the collector line is monitored and the duration of the disconnection signal of the collector line exceeds the preset time threshold, the operation data of each wind turbine generator set under the collector line is collected; The collected operating data of each wind turbine generator set is compared with the set operating data threshold to obtain the operating data comparison result; based on the operating data comparison result, it is determined whether each wind turbine generator set under the collector line is in an affected standby state, that is, the wind turbine generator set affected standby judgment result is obtained.

[0006] Furthermore, the process of real-time monitoring of the disconnection signal of the collector line is as follows: The event monitor is used to monitor the disconnection signal of the collector line in real time; if the disconnection signal of the collector line is monitored, the start time and duration of the disconnection signal of the collector line are recorded.

[0007] Furthermore, the duration of the disconnection signal of the collector line is compared with a preset time threshold; if the duration of the disconnection signal of the collector line is greater than the preset time threshold, the operation data of each wind turbine generator set under the collector line is collected.

[0008] Furthermore, the operation data of the wind turbine generator set includes the power and rotation speed of the wind turbine generator set, and the threshold of the wind turbine generator set operation data includes a power threshold and a rotation speed threshold.

[0009] Further, the collected operation data of each wind turbine generator set is compared with the operation data threshold of the wind turbine generator set to obtain the operation data comparison result; and according to the operation data comparison result, the process of determining whether each wind turbine generator set under the collector line is in the affected standby state is as follows: comparing the power of each wind turbine generator set under the collector with the power threshold; If the power of all wind turbine generator sets under the collector line is less than the power threshold, the rotation speed of each wind turbine generator set under the collector line is compared with the rotation speed threshold; If the rotation speeds of all wind turbine generator sets under the collector are less than the rotation speed threshold, each wind turbine generator set under the collector is in a standby state.

[0010] Furthermore, the rotation speed threshold is a starting rotation speed of the wind turbine generator set.

[0011] The present invention also provides a wind turbine generator set fatigue standby judgment system, comprising: A signal monitoring module is used to monitor the disconnection signal of the collector line in real time; An operation data acquisition module is used to collect the operation data of each wind turbine generator set under the collector line if a disconnection signal of the collector line is monitored and the duration of the disconnection signal of the collector line exceeds a preset time threshold; The data comparison and result output module is used to compare the collected operating data of each wind turbine generator set with the unit operating data threshold to obtain the operating data comparison result; based on the operating data comparison result, determine whether each wind turbine generator set under the collector line is in an affected standby state, that is, obtain the wind turbine generator set affected standby judgment result.

[0012] The present invention also provides a device for judging whether a wind turbine generator set is in standby state, comprising: a processor suitable for executing a computer program; A computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the method for determining whether the wind turbine generator set is in standby state is executed.

[0013] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and wherein the computer program, when executed by a processor, implements the method for determining whether a wind turbine generator set is in standby state.

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

[0015] Compared with the prior art, the present invention has the following beneficial effects: The method for judging the impaired standby state of a wind turbine generator set provided by the present invention monitors the tripping signal of the collector line in real time, and compares the operating data of each wind turbine generator set under the collector line that sends the tripping signal with the threshold value of the unit operating data, so as to eliminate invalid tripping events of the collector line, thereby achieving rapid and accurate judgment of the impaired standby state of the unit and providing a basis for timely taking countermeasures; the present invention can timely discover the impaired standby state of the wind turbine generator set and reduce the power generation loss caused by standby; provide accurate fault information for the operation and maintenance personnel of the wind farm, facilitate rapid recovery measures and improve the overall operation efficiency of the wind farm; and help accumulate operation data and provide a reference for the optimal design and management of the wind farm.

[0016] The wind turbine generator set impairment standby judgment system, wind turbine generator set impairment standby judgment device, computer-readable storage medium and computer program product provided by the present invention have all the advantages of the above-mentioned wind turbine generator set impairment standby judgment method. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 A flow chart of the method for determining whether a wind turbine generator set is in standby state provided in Example 1; Figure 2 A structural block diagram of a system for determining whether a wind turbine generator set is in standby state provided in Example 2; Figure 3 This is a structural block diagram of the wind turbine generator set impairment standby judgment device provided in Example 3. DETAILED DESCRIPTION

[0019] 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.

[0020] Example 1 As attached Figure 1 As shown, this embodiment 1 provides a method for determining whether a wind turbine generator set is in standby state, comprising the following steps: Step 1: monitor the disconnection signal of the collector line in real time. Specifically, the disconnection signal of the collector line is monitored in real time using an event monitor; it should be noted that the disconnection signal of the collector line is an indication signal generated when the collector line used to transmit electric energy in a wind farm is disconnected due to various abnormal reasons; wherein the abnormal reasons are, for example, failure, maintenance or overload protection.

[0021] Step 2: If the disconnection signal of the collector line is detected, the start time and duration of the disconnection signal of the collector line are recorded. If the disconnection signal of the collector line is not detected, the method is exited and the current judgment cycle is ended.

[0022] Step 3: Compare the duration of the disconnection signal of the collector line with the preset time threshold to determine whether the duration of the disconnection signal of the collector line exceeds the preset time threshold. Preferably, the preset time threshold is 16 minutes.

[0023] Step 4: If the duration of the collector disconnection signal is greater than the preset time threshold, jump to step 5; otherwise, end the method.

[0024] Step 5: Collect the operating data of each wind turbine generator set under the collector line. The operating data of the wind turbine generator set includes the power and speed of the wind turbine generator set. Specifically, the process of collecting the operating data of each wind turbine generator set under the collector line is: using a preset data collection interface to collect the operating data of each wind turbine generator set under the collector line from the SCADA system.

[0025] Step 6: Compare the collected operating data of each wind turbine generator set with the unit operating data threshold to obtain the operating data comparison result; wherein the unit operating data threshold includes a power threshold and a speed threshold; based on the operating data comparison result, determine whether each wind turbine generator set under the collector line is in an affected standby state, that is, obtain the wind turbine generator set affected standby judgment result.

[0026] Specifically, the process of determining whether each wind turbine generator set under the collector is in the affected standby state is as follows: Step 61, compare the power of each wind turbine generator set under the collector with the power threshold. If the power of all wind turbine generator sets under the collector is less than the power threshold, jump to step 62; otherwise, output the collector disconnection signal as an invalid disconnection event, and end the method; preferably, the power threshold is 1KW.

[0027] Step 62, compare the rotation speed of each wind turbine generator set under the collector with the rotation speed threshold. If the rotation speed of all wind turbine generator sets under the collector is less than the rotation speed threshold, each wind turbine generator set under the collector is in a standby state; otherwise, the trip signal output to the collector is an invalid trip event, and the method ends; preferably, the rotation speed threshold is the starting rotation speed of the wind turbine generator set; it should be noted that the starting rotation speed of the wind turbine generator set is the minimum rotation speed required for the wind turbine to start rotating from a stationary state.

[0028] It should also be noted that the wind turbine generator set is in an affected standby state, that is, due to the abnormal operation of the external collector line, the wind turbine generator set under the collector line cannot generate electricity normally and is in a condition waiting to be restored to normal.

[0029] The method for judging the affected standby state of a wind turbine generator set described in the present invention monitors the trip signal of the collector line in real time. Once the trip signal is detected, the operation data judgment process of each wind turbine generator set under the collector line is immediately triggered; during the operation data judgment process, the operation data of the wind turbine generator set connected to the tripped collector line is obtained; since there is a delay in the data after the collector line is tripped, after monitoring the collector line trip signal and ensuring that the duration of the collector line trip signal is greater than a preset time threshold, it is judged whether there is a wind turbine with normal power and speed under the collector line; specifically, if there is a wind turbine with normal power and speed, it is determined that the current trip is invalid; if there is no wind turbine with normal power and speed, it is determined that the current trip is valid, the state is switched to affected standby, and the start time and duration of the affected standby are recorded for subsequent data analysis and processing.

[0030] In the present invention, by monitoring the trip signal of the collector line in real time, it is ensured that possible problems or abnormalities of the collector line can be discovered in time; when the trip signal is monitored and lasts for more than a preset time threshold, the operating data of the wind turbine generator set is further collected and compared with the preset unit operating data threshold to obtain the wind turbine generator set's involved standby judgment result, thereby realizing the judgment of the wind turbine generator set's involved standby in an automated and intelligent manner, reducing the frequency of manual inspections and judgments, and reducing operation and maintenance costs; the data-based judgment method of the present invention can significantly improve the accuracy of the involved standby state judgment compared to experience or simple observation alone.

[0031] Example 2 As attached Figure 2 As shown, this embodiment 2 provides a wind turbine generator set damage standby judgment system, including a signal monitoring module, an operation data acquisition module and a data comparison and result output module.

[0032] The signal monitoring module is used to monitor the disconnection signal of the collector line in real time; if the disconnection signal of the collector line is monitored, the start time and duration of the disconnection signal of the collector line are recorded; the duration of the disconnection signal of the collector line is compared with the preset time threshold to determine whether the duration of the disconnection signal of the collector line exceeds the preset time threshold.

[0033] The operation data collection module is used to collect the operation data of each wind turbine generator set under the collector line if the duration of the disconnection signal of the collector line is greater than a preset time threshold.

[0034] The data comparison and result output module is used to compare the collected operating data of each wind turbine generator set with the unit operating data threshold to obtain the operating data comparison result; wherein the unit operating data threshold includes a power threshold and a speed threshold; according to the operating data comparison result, it is determined whether each wind turbine generator set under the collector line is in an affected standby state, that is, the affected standby judgment result of the wind turbine generator set is obtained.

[0035] Example 3 As attached Figure 3 As shown, this embodiment 3 provides a device for judging whether a wind turbine generator set is in standby state, including: a memory for storing a computer program; and a processor for implementing the steps of a method for judging whether a wind turbine generator set is in standby state when executing the computer program.

[0036] When the processor executes the computer program, the steps of the above-mentioned method for determining whether the wind turbine generator set is in standby state are implemented, for example: Monitor the trip signal of the collector line in real time; if the trip signal of the collector line is monitored, record the start time and duration of the trip signal of the collector line; compare the duration of the trip signal of the collector line with the preset time threshold, and determine whether the duration of the trip signal of the collector line exceeds the preset time threshold; if the duration of the trip signal of the collector line is greater than the preset time threshold, collect the operating data of each wind turbine generator set under the collector line; a data comparison and result output module is used to compare the collected operating data of each wind turbine generator set with the unit operating data threshold to obtain an operating data comparison result; wherein the unit operating data threshold includes a power threshold and a speed threshold; according to the operating data comparison result, determine whether each wind turbine generator set under the collector line is in an affected standby state, that is, obtain the affected standby judgment result of the wind turbine generator set.

[0037] Alternatively, when the processor executes the computer program, the functions of each module in the above-mentioned wind turbine generator set standby judgment system are realized, for example: The signal monitoring module is used to monitor the disconnection signal of the collector line in real time; if the disconnection signal of the collector line is monitored, the start time and duration of the disconnection signal of the collector line are recorded; the duration of the disconnection signal of the collector line is compared with the preset time threshold to determine whether the duration of the disconnection signal of the collector line exceeds the preset time threshold.

[0038] The operation data collection module is used to collect the operation data of each wind turbine generator set under the collector line if the duration of the disconnection signal of the collector line is greater than a preset time threshold.

[0039] The data comparison and result output module is used to compare the collected operating data of each wind turbine generator set with the unit operating data threshold to obtain the operating data comparison result; wherein the unit operating data threshold includes a power threshold and a speed threshold; according to the operating data comparison result, it is determined whether each wind turbine generator set under the collector line is in an affected standby state, that is, the affected standby judgment result of the wind turbine generator set is obtained.

[0040] 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 generator set injury standby judgment device.

[0041] For example, the computer program can be divided into a signal monitoring module, an operation data collection module, and a data comparison and result output module, and the specific functions of each module are as follows: a signal monitoring module, which is used to monitor the disconnection signal of the collector in real time; if the disconnection signal of the collector is monitored, the start time and duration of the disconnection signal of the collector are recorded; the duration of the disconnection signal of the collector is compared with the preset time threshold, and it is determined whether the duration of the disconnection signal of the collector exceeds the preset time threshold. An operation data collection module, which is used to collect the operation data of each wind turbine generator set under the collector if the duration of the disconnection signal of the collector is greater than the preset time threshold. A data comparison and result output module, which is used to compare the collected operation data of each wind turbine generator set with the threshold of the operation data of the unit to obtain the comparison result of the operation data; wherein the threshold of the operation data of the unit includes the power threshold and the speed threshold; according to the comparison result of the operation data, it is determined whether each wind turbine generator set under the collector is in the affected standby state, that is, the judgment result of the affected standby of the wind turbine generator set is obtained.

[0042] The wind turbine generator set standby judgment device may be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The wind turbine generator set standby 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 wind turbine generator set standby judgment device and does not constitute a limitation on the wind turbine generator set standby judgment device. It may include more components than the above, or a combination of certain components, or different components. For example, the wind turbine generator set standby judgment device may also include input and output devices, network access devices, buses, etc.

[0043] 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 generator set standby judgment device, and uses various interfaces and lines to connect various parts of the wind turbine generator set standby judgment device.

[0044] The memory can be used to store the computer program and / or module, and the processor implements various functions of the wind turbine generator set standby judgment device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0045] 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.

[0046] 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 whether a wind turbine generator set is in standby state are implemented, for example: Monitor the trip signal of the collector line in real time; if the trip signal of the collector line is monitored, record the start time and duration of the trip signal of the collector line; compare the duration of the trip signal of the collector line with the preset time threshold, and determine whether the duration of the trip signal of the collector line exceeds the preset time threshold; if the duration of the trip signal of the collector line is greater than the preset time threshold, collect the operation data of each wind turbine generator set under the collector line; compare the collected operation data of each wind turbine generator set with the unit operation data threshold to obtain the operation data comparison result; wherein, the unit operation data threshold includes a power threshold and a speed threshold; according to the operation data comparison result, determine whether each wind turbine generator set under the collector line is in the affected standby state, that is, obtain the affected standby judgment result of the wind turbine generator set.

[0047] If the modules / units integrated in the wind turbine generator set affected standby judgment system are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.

[0048] Based on such understanding, the present invention implements all or part of the processes in the above-mentioned method for determining the load standby status of wind turbine generators, 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 load standby status of wind turbine generators can be implemented. 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.

[0049] 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.

[0050] 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.

[0051] Example 5 This embodiment 5 provides a computer product, which includes a computer program, and the computer program is stored in a computer-readable storage medium; the processor of the wind turbine generator set standby judgment device reads the computer program from the computer-readable storage medium, and the processor executes the computer program, so that the wind turbine generator set standby judgment device can execute the wind turbine generator set standby judgment method described in embodiment 1, which will not be repeated here.

[0052] 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.

[0053] The method for judging the affected standby state of a wind turbine generator set described in the present invention can detect the abnormal state of the collector line at the first time by real-time monitoring of the tripping signal of the collector line, so as to take timely measures to avoid further deterioration of the problem; by comparing the operating data, the wind turbine generator set in the affected standby state can be quickly identified, which is helpful to timely check and solve the problem and reduce the economic losses caused by equipment downtime; the present invention can accurately and timely judge the affected standby state of the wind turbine generator set, which is helpful to improve the operation and maintenance efficiency and system stability of the wind farm; at the same time, accurate judgment results help operation and maintenance personnel to formulate and implement maintenance plans more efficiently, and improve overall operation and maintenance efficiency.

[0054] 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 whether a wind turbine generator set is in standby state, characterized in that: include: Monitor the disconnection signal of the collector line in real time; If the disconnection signal of the collector line is monitored and the duration of the disconnection signal of the collector line exceeds the preset time threshold, the operation data of each wind turbine generator set under the collector line is collected; Compare the collected operating data of each wind turbine generator set with the threshold value of the operating data of the set to obtain an operating data comparison result; According to the comparison result of the operation data, it is determined whether each wind turbine generator set under the collector line is in the involved standby state, that is, the involved standby judgment result of the wind turbine generator set is obtained.

2. A method for determining whether a wind turbine generator set is in standby state according to claim 1, characterized in that: The process of real-time monitoring of the disconnection signal of the collector line is as follows: The event monitor is used to monitor the disconnection signal of the collector line in real time; if the disconnection signal of the collector line is monitored, the start time and duration of the disconnection signal of the collector line are recorded.

3. A method for determining whether a wind turbine generator set is in standby state according to claim 2, characterized in that: The duration of the disconnection signal of the collector line is compared with a preset time threshold; if the duration of the disconnection signal of the collector line is greater than the preset time threshold, the operation data of each wind turbine generator set under the collector line is collected.

4. A method for determining whether a wind turbine generator set is in standby state according to claim 1, characterized in that: The operation data of the wind turbine generator set includes the power and rotation speed of the wind turbine generator set, and the threshold of the wind turbine generator set operation data includes a power threshold and a rotation speed threshold.

5. A method for determining whether a wind turbine generator set is in standby state according to claim 4, characterized in that: The process of comparing the collected operation data of each wind turbine generator set with the operation data threshold of the wind turbine generator set to obtain the operation data comparison result; and determining whether each wind turbine generator set under the collector line is in the affected standby state according to the operation data comparison result is as follows: comparing the power of each wind turbine generator set under the collector with the power threshold; If the power of all wind turbine generator sets under the collector line is less than the power threshold, the rotation speed of each wind turbine generator set under the collector line is compared with the rotation speed threshold; If the rotation speeds of all wind turbine generator sets under the collector are less than the rotation speed threshold, each wind turbine generator set under the collector is in a standby state.

6. A method for determining whether a wind turbine generator set is in standby state according to claim 4, characterized in that: The speed threshold is the starting speed of the wind turbine generator set.

7. A wind turbine generator set standby judgment system, characterized in that: include: A signal monitoring module is used to monitor the disconnection signal of the collector line in real time; An operation data acquisition module is used to collect the operation data of each wind turbine generator set under the collector line if a disconnection signal of the collector line is monitored and the duration of the disconnection signal of the collector line exceeds a preset time threshold; The data comparison and result output module is used to compare the collected operation data of each wind turbine generator set with the threshold value of the operation data of the set to obtain the operation data comparison result; According to the comparison result of the operation data, it is determined whether each wind turbine generator set under the collector line is in the involved standby state, that is, the involved standby judgment result of the wind turbine generator set is obtained.

8. A device for judging whether a wind turbine generator set is in standby state, 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 wind turbine generator set being in standby state as described in 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 whether a wind turbine generator set is in standby state 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 wind turbine generator set in standby state according to any one of claims 1 to 6 is implemented.