Intelligent early warning method and system for wind turbine generator system

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By acquiring the real-time output power and temperature of wind turbine generators, and combining multiple temperature acquisitions and comparisons, the problem of false alarms in wind turbine generator temperature monitoring and early warning has been solved, realizing intelligent detection and timely early warning, and improving the accuracy and comprehensiveness of fault detection.

CN116044677BActive Publication Date: 2026-07-21HUANENG SHANXI COMPREHENSIVE ENERGY CO LTD SHANXI PROVINCE +7

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: HUANENG SHANXI COMPREHENSIVE ENERGY CO LTD SHANXI PROVINCE
Filing Date: 2022-12-09
Publication Date: 2026-07-21

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Abstract

The application relates to the technical field of wind power generation, and discloses a wind turbine intelligent early warning method and system, which acquires real-time output power of a wind turbine, compares the real-time output power with preset output power, judges whether the first power generation temperature needs to be acquired, when the real-time output power is greater than or equal to the preset output power, it is judged that the first power generation temperature does not need to be acquired, when the real-time output power is less than the preset output power, the first power generation temperature is acquired, the second power generation temperature is collected within a first preset time period, and the third power generation temperature is collected within a second preset time period, whether the wind turbine has a fault is judged according to the first power generation temperature, the second power generation temperature and the third power generation temperature, and if the fault occurs, early warning is prompted. The application can realize intelligent detection of the wind turbine, improve fault detection efficiency, and timely early warning is carried out according to the fault condition, so that the comprehensiveness and accuracy of fault early warning are improved.

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Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to an intelligent early warning method and system for wind turbine generator sets. Background Technology

[0002] With the depletion of non-renewable resources such as oil and coal, and the increasing awareness of environmental protection, people are paying more and more attention to the application of renewable energy. Among them, wind energy, as a clean and renewable energy source, is playing an increasingly important role in global energy conservation and emission reduction efforts. Correspondingly, wind turbine generators, which can convert wind energy into electricity, have received increasing attention and development. Wind turbine generators are typically installed in the field, where the working environment is often harsh, making them prone to malfunctions. To promptly detect faults in wind turbine generators and prevent problems such as reduced power generation efficiency and damage to components caused by abnormal operation, the operating status of wind turbine generators is usually monitored. Since the temperature of a wind turbine generator often reflects its operating status, monitoring the temperature of the wind turbine generator is frequently used in practical applications to monitor its operation.

[0003] Traditional wind turbine generators use temperature sensors to collect the temperature of the generator and compare it with a preset safety value. When the collected temperature exceeds the preset safety value, a fault alarm is issued. This traditional warning method is relatively simple. When the environmental parameters of the wind turbine generator change, the temperature of the generator will also change. At this time, the generator may not have malfunctioned, which can easily lead to false alarms. This increases the workload of the staff. This traditional warning method has limitations and lacks accuracy.

[0004] Therefore, how to provide a method and system for intelligent early warning of wind turbine generators is a technical problem that needs to be solved. Summary of the Invention

[0005] This invention provides an intelligent early warning method and system for wind turbine generator sets, which solves the technical problem in the prior art that it is impossible to achieve intelligent early warning based on the power generation temperature of wind turbine generator sets, and thus cannot reduce the false alarm rate.

[0006] To achieve the above objectives, the present invention provides an intelligent early warning method for wind turbine generator sets, the method comprising:

[0007] Obtain the real-time output power of the wind turbine generator set;

[0008] The real-time output power is compared with the preset output power, and based on the comparison result, it is determined whether it is necessary to obtain the first power generation temperature of the wind turbine generator.

[0009] When the real-time output power is greater than or equal to the preset output power, it is determined that it is not necessary to obtain the first power generation temperature of the wind turbine generator set; when the real-time output power is less than the preset output power, the first power generation temperature of the wind turbine generator set is obtained.

[0010] During a first preset time period, the second power generation temperature of the wind turbine generator set is collected, and during a second preset time period, the third power generation temperature of the wind turbine generator set is collected.

[0011] The wind turbine generator set is judged to have malfunctioned based on the first power generation temperature, the second power generation temperature and the third power generation temperature. If a malfunction occurs, an early warning is issued.

[0012] In one embodiment, after obtaining the first power generation temperature of the wind turbine generator set, the method further includes:

[0013] Obtain the ambient temperature A of the wind turbine generator set;

[0014] Based on the ambient temperature A of the wind turbine generator set, a safe value for the power generation temperature of the wind turbine generator set is set. Then, based on the relationship between the first power generation temperature and the safe value for the power generation temperature, it is determined whether to collect the second power generation temperature of the wind turbine generator set within a first preset time period.

[0015] If the first power generation temperature is less than or equal to the safe value of the power generation temperature, it is determined that the wind turbine generator set may be malfunctioning, and the second power generation temperature of the wind turbine generator set is collected within a first preset time period.

[0016] If the first power generation temperature is greater than the safe value for power generation temperature, the wind turbine generator set is judged to have malfunctioned, and an early warning is issued.

[0017] In one embodiment, setting the safe power generation temperature value of the wind turbine generator set based on the ambient temperature A of the wind turbine generator set includes:

[0018] The ambient temperature matrix E of the wind turbine generator set is set as E(E1, E2, E3, E4), where E1 is the first preset ambient temperature, E2 is the second preset ambient temperature, E3 is the third preset ambient temperature, and E4 is the fourth preset ambient temperature, and E1 < E2 < E3 < E4.

[0019] A preset safe power generation temperature matrix F is defined as F(F1, F2, F3, F4, F5), where F1 is the first preset safe power generation temperature, F2 is the second preset safe power generation temperature, F3 is the third preset safe power generation temperature, F4 is the fourth preset safe power generation temperature, and F5 is the fifth preset safe power generation temperature, and F1 < F2 < F3 < F4 < F5;

[0020] The safe value for the power generation temperature of the wind turbine generator set is set based on the relationship between the ambient temperature A of the wind turbine generator set and the ambient temperature of each preset wind turbine generator set:

[0021] When A < E1, the first preset power generation temperature safety value F1 is selected as the power generation temperature safety value of the wind turbine generator set.

[0022] When E1≤A<E2, the second preset power generation temperature safety value F2 is selected as the power generation temperature safety value of the wind turbine generator set.

[0023] When E2≤A<E3, the third preset power generation temperature safety value F3 is selected as the power generation temperature safety value of the wind turbine generator set;

[0024] When E3≤A<E4, the fourth preset power generation temperature safety value F4 is selected as the power generation temperature safety value of the wind turbine generator set;

[0025] When E4≤A, the fifth preset power generation temperature safety value F5 is selected as the power generation temperature safety value of the wind turbine generator set.

[0026] In one embodiment, determining whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature, and the third power generation temperature includes:

[0027] The values of the first power generation temperature, the second power generation temperature, and the third power generation temperature are sorted to obtain the maximum power generation temperature, the intermediate power generation temperature, and the minimum power generation temperature.

[0028] Calculate the first power generation temperature difference between the maximum power generation temperature and the minimum power generation temperature, and determine whether the first power generation temperature difference is less than or equal to a preset power generation temperature difference.

[0029] If so, then it is determined that the wind turbine generator set has not malfunctioned;

[0030] If not, calculate the second power generation temperature difference between the maximum power generation temperature and the intermediate power generation temperature, calculate the third power generation temperature difference between the intermediate power generation temperature and the minimum power generation temperature, and determine whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference.

[0031] In one embodiment, determining whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference includes:

[0032] Determine whether both the second and third power generation temperature differences are greater than the preset power generation temperature difference.

[0033] If so, then it is determined that the wind turbine generator set has malfunctioned;

[0034] If not, the values of the second power generation temperature difference and the third power generation temperature difference are sorted, and the wind turbine generator set is judged to have malfunctioned based on the larger value of the second power generation temperature difference and the third power generation temperature difference.

[0035] In one embodiment, determining whether the wind turbine generator set has malfunctioned based on the larger of the second power generation temperature difference and the third power generation temperature difference includes:

[0036] Determine whether the larger of the second and third power generation temperature differences is greater than or equal to the warning threshold.

[0037] If so, then it is determined that the wind turbine generator set has malfunctioned;

[0038] If not, then it is determined that the wind turbine generator set has not malfunctioned.

[0039] In one embodiment, when issuing a warning, the following is included:

[0040] The maximum power generation temperature G is obtained, the warning level of the wind turbine generator is set according to the maximum power generation temperature G, and a warning is issued based on the warning level.

[0041] In one embodiment, setting the warning level of the wind turbine generator set based on the maximum power generation temperature G includes:

[0042] The maximum power generation temperature matrix M is preset, and M(M1, M2, M3) is set, where M1 is the first preset maximum power generation temperature, M2 is the second preset maximum power generation temperature, M3 is the third preset maximum power generation temperature, and M1 < M2 < M3.

[0043] Different warning levels are generated based on the relationship between the maximum power generation temperature G and each preset maximum power generation temperature:

[0044] When G≤M1, a Level 1 warning is generated;

[0045] When M1 < G ≤ M2, a level 2 warning is generated;

[0046] When M2 < G ≤ M3, a level 3 warning is generated;

[0047] When M3 < G, a level 4 warning level is generated.

[0048] In one embodiment, after issuing a warning based on the warning level, the method further includes:

[0049] The warning prompt is used to invoke the pre-stored warning strategy in the database, and the wind turbine is processed according to the warning strategy.

[0050] To achieve the above objectives, the present invention provides an intelligent early warning system for wind turbine generator sets, the system comprising:

[0051] The acquisition module is used to acquire the real-time output power of the wind turbine generator set;

[0052] The judgment module is used to compare the real-time output power with the preset output power, and based on the comparison result, determine whether it is necessary to obtain the first power generation temperature of the wind turbine generator set.

[0053] When the real-time output power is greater than or equal to the preset output power, it is determined that it is not necessary to obtain the first power generation temperature of the wind turbine generator set; when the real-time output power is less than the preset output power, the first power generation temperature of the wind turbine generator set is obtained.

[0054] The data acquisition module is used to acquire the second power generation temperature of the wind turbine generator set within a first preset time period, and to acquire the third power generation temperature of the wind turbine generator set within a second preset time period.

[0055] The early warning module is used to determine whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature and the third power generation temperature. If a malfunction occurs, an early warning prompt will be issued.

[0056] This invention provides an intelligent early warning method and system for wind turbine generator sets, which has the following advantages compared with the prior art:

[0057] This invention acquires the real-time output power of a wind turbine generator set, compares it with a preset output power, and determines whether a first power generation temperature needs to be acquired. If the real-time output power is greater than or equal to the preset output power, acquiring the first power generation temperature is not required; if the real-time output power is less than the preset output power, the first power generation temperature is acquired. Within a first preset time period, a second power generation temperature is acquired, and within a second preset time period, a third power generation temperature is acquired. Based on the first, second, and third power generation temperatures, it is determined whether a fault has occurred in the wind turbine generator set. If a fault occurs, an early warning is issued. This invention enables intelligent detection of wind turbine generator sets, improves fault detection efficiency, and provides timely early warnings for fault conditions, thus enhancing the comprehensiveness and accuracy of fault warnings. Attached Figure Description

[0058] Figure 1 A flowchart illustrating an intelligent early warning method for wind turbine generator sets according to an embodiment of the present invention is shown;

[0059] Figure 2 A schematic diagram of the structure of an intelligent early warning system for wind turbine generators according to an embodiment of the present invention is shown. Detailed Implementation

[0060] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0061] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0065] like Figure 1 As shown, an embodiment of the present invention discloses an intelligent early warning method for wind turbine generator sets, the method comprising:

[0066] S101: Obtain the real-time output power of the wind turbine generator set;

[0067] S102: Compare the real-time output power with the preset output power, and determine whether it is necessary to obtain the first power generation temperature of the wind turbine generator set based on the comparison result.

[0068] When the real-time output power is greater than or equal to the preset output power, it is determined that it is not necessary to obtain the first power generation temperature of the wind turbine generator set; when the real-time output power is less than the preset output power, the first power generation temperature of the wind turbine generator set is obtained.

[0069] S103: During the first preset time period, the second power generation temperature of the wind turbine generator set is collected, and during the second preset time period, the third power generation temperature of the wind turbine generator set is collected.

[0070] S104: Determine whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature and the third power generation temperature. If a malfunction occurs, issue an early warning.

[0071] In this embodiment, the present invention acquires the real-time output power of the wind turbine generator set, compares the real-time output power with a preset output power, and determines whether it is necessary to acquire a first power generation temperature. When the real-time output power is greater than or equal to the preset output power, it is determined that acquiring the first power generation temperature is not necessary; when the real-time output power is less than the preset output power, the first power generation temperature is acquired. A second power generation temperature is collected within a first preset time period, and a third power generation temperature is collected within a second preset time period. Based on the first, second, and third power generation temperatures, it is determined whether the wind turbine generator set has malfunctioned. If a malfunction occurs, an early warning is issued. This invention enables intelligent detection of wind turbine generator sets, improves fault detection efficiency, and provides timely early warnings for fault conditions, thus improving the comprehensiveness and accuracy of fault warnings.

[0072] It should be noted that when the real-time output power is greater than or equal to the preset output power, it indicates that the wind turbine is in a normal power generation state. There is no need to judge whether the wind turbine is faulty by the temperature. The preset output power can be selected based on factors such as the current wind speed, wind direction, and the actual speed of the wind turbine. No specific limitation is made here.

[0073] In some embodiments of this application, after obtaining the first power generation temperature of the wind turbine generator set, the method further includes:

[0074] Obtain the ambient temperature A of the wind turbine generator set;

[0075] Based on the ambient temperature A of the wind turbine generator set, a safe value for the power generation temperature of the wind turbine generator set is set. Then, based on the relationship between the first power generation temperature and the safe value for the power generation temperature, it is determined whether to collect the second power generation temperature of the wind turbine generator set within a first preset time period.

[0076] If the first power generation temperature is less than or equal to the safe value of the power generation temperature, it is determined that the wind turbine generator set may be malfunctioning, and the second power generation temperature of the wind turbine generator set is collected within a first preset time period.

[0077] If the first power generation temperature is greater than the safe value for power generation temperature, the wind turbine generator set is judged to have malfunctioned, and an early warning is issued.

[0078] In this embodiment, after obtaining the first power generation temperature of the wind turbine generator set, a safe power generation temperature value is set based on the ambient temperature A of the wind turbine generator set. The relationship between the first power generation temperature and the safe power generation temperature value is used to determine whether to collect the second power generation temperature of the wind turbine generator set within a first preset time period. If the first power generation temperature is greater than the safe power generation temperature value, an early warning can be issued directly. The safe power generation temperature value refers to the safe power generation temperature maintained by the wind turbine generator set under the current ambient temperature. The first preset time period and the first preset time period can be selected according to actual conditions and are not specifically limited here. If the first power generation temperature is less than or equal to the safe power generation temperature value, it is determined that the wind turbine generator set may be malfunctioning, and the second power generation temperature of the wind turbine generator set is collected within the first preset time period. This invention can prevent false alarms and improve the accuracy of early warnings.

[0079] In some embodiments of this application, setting the safe power generation temperature value of the wind turbine generator set based on the ambient temperature A of the wind turbine generator set includes:

[0080] The ambient temperature matrix E of the wind turbine generator set is set as E(E1, E2, E3, E4), where E1 is the first preset ambient temperature, E2 is the second preset ambient temperature, E3 is the third preset ambient temperature, and E4 is the fourth preset ambient temperature, and E1 < E2 < E3 < E4.

[0081] A preset safe power generation temperature matrix F is defined as F(F1, F2, F3, F4, F5), where F1 is the first preset safe power generation temperature, F2 is the second preset safe power generation temperature, F3 is the third preset safe power generation temperature, F4 is the fourth preset safe power generation temperature, and F5 is the fifth preset safe power generation temperature, and F1 < F2 < F3 < F4 < F5;

[0082] The safe value for the power generation temperature of the wind turbine generator set is set based on the relationship between the ambient temperature A of the wind turbine generator set and the ambient temperature of each preset wind turbine generator set:

[0083] When A < E1, the first preset power generation temperature safety value F1 is selected as the power generation temperature safety value of the wind turbine generator set.

[0084] When E1≤A<E2, the second preset power generation temperature safety value F2 is selected as the power generation temperature safety value of the wind turbine generator set.

[0085] When E2≤A<E3, the third preset power generation temperature safety value F3 is selected as the power generation temperature safety value of the wind turbine generator set;

[0086] When E3≤A<E4, the fourth preset power generation temperature safety value F4 is selected as the power generation temperature safety value of the wind turbine generator set;

[0087] When E4≤A, the fifth preset power generation temperature safety value F5 is selected as the power generation temperature safety value of the wind turbine generator set.

[0088] In this embodiment, the safe value of the power generation temperature of the wind turbine generator set is set according to the relationship between the ambient temperature A of the wind turbine generator set and the ambient temperature of each preset wind turbine generator set. By setting the safe value of the power generation temperature of the wind turbine generator set, the present invention can reduce the workload of the staff.

[0089] In some embodiments of this application, determining whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature, and the third power generation temperature includes:

[0090] The values of the first power generation temperature, the second power generation temperature, and the third power generation temperature are sorted to obtain the maximum power generation temperature, the intermediate power generation temperature, and the minimum power generation temperature.

[0091] Calculate the first power generation temperature difference between the maximum power generation temperature and the minimum power generation temperature, and determine whether the first power generation temperature difference is less than or equal to a preset power generation temperature difference.

[0092] If so, then it is determined that the wind turbine generator set has not malfunctioned;

[0093] If not, calculate the second power generation temperature difference between the maximum power generation temperature and the intermediate power generation temperature, calculate the third power generation temperature difference between the intermediate power generation temperature and the minimum power generation temperature, and determine whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference.

[0094] In this embodiment, the values of the first power generation temperature, the second power generation temperature, and the third power generation temperature are sorted to obtain the maximum power generation temperature, the intermediate power generation temperature, and the minimum power generation temperature. The first power generation temperature difference between the maximum power generation temperature and the minimum power generation temperature is used to determine whether the wind turbine generator set has malfunctioned. The preset power generation temperature difference can be selected according to actual conditions and is not specifically limited here. This invention can realize intelligent detection of wind turbine generator set malfunctions and improve malfunction detection efficiency.

[0095] In some embodiments of this application, determining whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference includes:

[0096] Determine whether both the second and third power generation temperature differences are greater than the preset power generation temperature difference.

[0097] If so, then it is determined that the wind turbine generator set has malfunctioned;

[0098] If not, the values of the second power generation temperature difference and the third power generation temperature difference are sorted, and the wind turbine generator set is judged to have malfunctioned based on the larger value of the second power generation temperature difference and the third power generation temperature difference.

[0099] In this embodiment, when the first power generation temperature difference is less than or equal to the preset power generation temperature difference, it is necessary to calculate the second power generation temperature difference between the maximum power generation temperature and the intermediate power generation temperature, and calculate the third power generation temperature difference between the intermediate power generation temperature and the minimum power generation temperature. It is then determined whether the second and third power generation temperature differences are both greater than the preset power generation temperature difference. If so, it is determined that the wind turbine generator set has malfunctioned. This indicates that the temperature of the wind turbine generator set is too high, and a timely warning needs to be issued to prevent damage to the components of the wind turbine generator set.

[0100] In some embodiments of this application, when determining whether the wind turbine generator set has malfunctioned based on the larger of the second power generation temperature difference and the third power generation temperature difference, the method includes:

[0101] Determine whether the larger of the second and third power generation temperature differences is greater than or equal to the warning threshold.

[0102] If so, then it is determined that the wind turbine generator set has malfunctioned;

[0103] If not, then it is determined that the wind turbine generator set has not malfunctioned.

[0104] In this embodiment, if either the second power generation temperature difference or the third power generation temperature difference is less than a preset power generation temperature difference, it is determined whether the larger of the two temperature differences is greater than or equal to a warning threshold. The warning threshold can be selected according to the actual situation and is not specifically limited here. This invention classifies the temperature changes of the wind turbine generator set into various different situations by using the first power generation temperature, the second power generation temperature, and the third power generation temperature, which can effectively improve the comprehensiveness and accuracy of fault warning. It can prevent false alarms and avoid the wind turbine generator set from failing to work normally due to faults.

[0105] In some embodiments of this application, the warning notification includes:

[0106] The maximum power generation temperature G is obtained, the warning level of the wind turbine generator is set according to the maximum power generation temperature G, and a warning is issued based on the warning level.

[0107] In some embodiments of this application, setting the warning level of the wind turbine generator set based on the maximum power generation temperature G includes:

[0108] The maximum power generation temperature matrix M is preset, and M(M1, M2, M3) is set, where M1 is the first preset maximum power generation temperature, M2 is the second preset maximum power generation temperature, M3 is the third preset maximum power generation temperature, and M1 < M2 < M3.

[0109] Different warning levels are generated based on the relationship between the maximum power generation temperature G and each preset maximum power generation temperature:

[0110] When G≤M1, a Level 1 warning is generated;

[0111] When M1 < G ≤ M2, a level 2 warning is generated;

[0112] When M2 < G ≤ M3, a level 3 warning is generated;

[0113] When M3 < G, a level 4 warning level is generated.

[0114] In some embodiments of this application, after issuing a warning based on the warning level, the method further includes:

[0115] The warning prompt is used to invoke the pre-stored warning strategy in the database, and the wind turbine is processed according to the warning strategy.

[0116] In this embodiment, different warning levels are generated based on the relationship between the maximum power generation temperature G and various preset maximum power generation temperatures. Different warning prompts are issued according to the different warning levels. Pre-stored warning strategies in the database are invoked based on the warning prompts, and the wind turbine generator set is processed according to these strategies. This invention can generate different warning prompts and invoke pre-stored warning strategies in the database based on the warning prompts, thereby saving maintenance time for staff, reducing maintenance time for wind turbine generator sets, and ensuring the power generation efficiency of wind turbine generator sets.

[0117] like Figure 2 As shown, in order to achieve the above objectives, the present invention also provides an intelligent early warning system for wind turbine generator sets, the system comprising:

[0118] The acquisition module is used to acquire the real-time output power of the wind turbine generator set;

[0119] The judgment module is used to compare the real-time output power with the preset output power, and based on the comparison result, determine whether it is necessary to obtain the first power generation temperature of the wind turbine generator set.

[0120] When the real-time output power is greater than or equal to the preset output power, it is determined that it is not necessary to obtain the first power generation temperature of the wind turbine generator set; when the real-time output power is less than the preset output power, the first power generation temperature of the wind turbine generator set is obtained.

[0121] The data acquisition module is used to acquire the second power generation temperature of the wind turbine generator set within a first preset time period, and to acquire the third power generation temperature of the wind turbine generator set within a second preset time period.

[0122] The early warning module is used to determine whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature and the third power generation temperature. If a malfunction occurs, an early warning prompt will be issued.

[0123] In some embodiments of this application, after acquiring the first power generation temperature of the wind turbine generator set, the acquisition module further includes:

[0124] Obtain the ambient temperature A of the wind turbine generator set;

[0125] Based on the ambient temperature A of the wind turbine generator set, a safe value for the power generation temperature of the wind turbine generator set is set. Then, based on the relationship between the first power generation temperature and the safe value for the power generation temperature, it is determined whether to collect the second power generation temperature of the wind turbine generator set within a first preset time period.

[0126] If the first power generation temperature is less than or equal to the safe value of the power generation temperature, it is determined that the wind turbine generator set may be malfunctioning, and the second power generation temperature of the wind turbine generator set is collected within a first preset time period.

[0127] If the first power generation temperature is greater than the safe value for power generation temperature, the wind turbine generator set is judged to have malfunctioned, and an early warning is issued.

[0128] In some embodiments of this application, when setting the safe value for the power generation temperature of the wind turbine generator set based on the ambient temperature A of the wind turbine generator set in the acquisition module, the following steps are included:

[0129] The ambient temperature matrix E of the wind turbine generator set is set as E(E1, E2, E3, E4), where E1 is the first preset ambient temperature, E2 is the second preset ambient temperature, E3 is the third preset ambient temperature, and E4 is the fourth preset ambient temperature, and E1 < E2 < E3 < E4.

[0130] A preset safe power generation temperature matrix F is defined as F(F1, F2, F3, F4, F5), where F1 is the first preset safe power generation temperature, F2 is the second preset safe power generation temperature, F3 is the third preset safe power generation temperature, F4 is the fourth preset safe power generation temperature, and F5 is the fifth preset safe power generation temperature, and F1 < F2 < F3 < F4 < F5;

[0131] The safe value for the power generation temperature of the wind turbine generator set is set based on the relationship between the ambient temperature A of the wind turbine generator set and the ambient temperature of each preset wind turbine generator set:

[0132] When A < E1, the first preset power generation temperature safety value F1 is selected as the power generation temperature safety value of the wind turbine generator set.

[0133] When E1≤A<E2, the second preset power generation temperature safety value F2 is selected as the power generation temperature safety value of the wind turbine generator set.

[0134] When E2≤A<E3, the third preset power generation temperature safety value F3 is selected as the power generation temperature safety value of the wind turbine generator set;

[0135] When E3≤A<E4, the fourth preset power generation temperature safety value F4 is selected as the power generation temperature safety value of the wind turbine generator set;

[0136] When E4≤A, the fifth preset power generation temperature safety value F5 is selected as the power generation temperature safety value of the wind turbine generator set.

[0137] In some embodiments of this application, when determining whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature, and the third power generation temperature in the early warning module, the following steps are included:

[0138] The values of the first power generation temperature, the second power generation temperature, and the third power generation temperature are sorted to obtain the maximum power generation temperature, the intermediate power generation temperature, and the minimum power generation temperature.

[0139] Calculate the first power generation temperature difference between the maximum power generation temperature and the minimum power generation temperature, and determine whether the first power generation temperature difference is less than or equal to a preset power generation temperature difference.

[0140] If so, then it is determined that the wind turbine generator set has not malfunctioned;

[0141] If not, calculate the second power generation temperature difference between the maximum power generation temperature and the intermediate power generation temperature, calculate the third power generation temperature difference between the intermediate power generation temperature and the minimum power generation temperature, and determine whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference.

[0142] In some embodiments of this application, when determining whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference in the early warning module, the following steps are included:

[0143] Determine whether both the second and third power generation temperature differences are greater than the preset power generation temperature difference.

[0144] If so, then it is determined that the wind turbine generator set has malfunctioned;

[0145] If not, the values of the second power generation temperature difference and the third power generation temperature difference are sorted, and the wind turbine generator set is judged to have malfunctioned based on the larger value of the second power generation temperature difference and the third power generation temperature difference.

[0146] In some embodiments of this application, when determining whether the wind turbine generator set has malfunctioned based on the larger of the second power generation temperature difference and the third power generation temperature difference in the early warning module, the following steps are included:

[0147] Determine whether the larger of the second and third power generation temperature differences is greater than or equal to the warning threshold.

[0148] If so, then it is determined that the wind turbine generator set has malfunctioned;

[0149] If not, then it is determined that the wind turbine generator set has not malfunctioned.

[0150] In some embodiments of this application, the early warning module includes the following functions when issuing an early warning notification:

[0151] The maximum power generation temperature G is obtained, the warning level of the wind turbine generator is set according to the maximum power generation temperature G, and a warning is issued based on the warning level.

[0152] In some embodiments of this application, setting the warning level of the wind turbine generator set based on the maximum power generation temperature G includes:

[0153] The maximum power generation temperature matrix M is preset, and M(M1, M2, M3) is set, where M1 is the first preset maximum power generation temperature, M2 is the second preset maximum power generation temperature, M3 is the third preset maximum power generation temperature, and M1 < M2 < M3.

[0154] Different warning levels are generated based on the relationship between the maximum power generation temperature G and each preset maximum power generation temperature:

[0155] When G≤M1, a Level 1 warning is generated;

[0156] When M1 < G ≤ M2, a level 2 warning is generated;

[0157] When M2 < G ≤ M3, a level 3 warning is generated;

[0158] When M3 < G, a level 4 warning level is generated.

[0159] In some embodiments of this application, after issuing a warning based on the warning level, the warning module further includes:

[0160] The warning prompt is used to invoke the pre-stored warning strategy in the database, and the wind turbine is processed according to the warning strategy.

[0161] In summary, this invention acquires the real-time output power of the wind turbine generator set, compares it with a preset output power, and determines whether a first power generation temperature needs to be acquired. When the real-time output power is greater than or equal to the preset output power, it is determined that the first power generation temperature does not need to be acquired; when the real-time output power is less than the preset output power, the first power generation temperature is acquired. A second power generation temperature is collected within a first preset time period, and a third power generation temperature is collected within a second preset time period. Based on the first, second, and third power generation temperatures, it is determined whether a fault has occurred in the wind turbine generator set. If a fault occurs, an early warning is issued. This invention enables intelligent detection of wind turbine generator sets, improves fault detection efficiency, and provides timely early warnings for fault conditions, thus improving the comprehensiveness and accuracy of fault warnings.

[0162] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0163] Although the invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, features in the embodiments disclosed herein can be combined with each other in any manner, provided there is no structural conflict. The omission of all such combinations in this specification is merely for brevity and resource conservation. Therefore, the invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0164] It will be understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for intelligent early warning of wind turbine generator sets, characterized in that, The method includes: Obtain the real-time output power of the wind turbine generator set; The real-time output power is compared with the preset output power, and based on the comparison result, it is determined whether it is necessary to obtain the first power generation temperature of the wind turbine generator. When the real-time output power is greater than or equal to the preset output power, it is determined that it is not necessary to obtain the first power generation temperature of the wind turbine generator set; when the real-time output power is less than the preset output power, the first power generation temperature of the wind turbine generator set is obtained. During a first preset time period, the second power generation temperature of the wind turbine generator set is collected, and during a second preset time period, the third power generation temperature of the wind turbine generator set is collected. The wind turbine generator set is judged to have malfunctioned based on the first power generation temperature, the second power generation temperature and the third power generation temperature. If a malfunction occurs, an early warning is issued. After obtaining the first power generation temperature of the wind turbine generator set, the process further includes: Obtain the ambient temperature A of the wind turbine generator set; Based on the ambient temperature A of the wind turbine generator set, a safe value for the power generation temperature of the wind turbine generator set is set. Then, based on the relationship between the first power generation temperature and the safe value for the power generation temperature, it is determined whether to collect the second power generation temperature of the wind turbine generator set within a first preset time period. If the first power generation temperature is less than or equal to the safe value of the power generation temperature, it is determined that the wind turbine generator set may be malfunctioning, and the second power generation temperature of the wind turbine generator set is collected within a first preset time period. If the first power generation temperature is greater than the safe value for power generation temperature, it is determined that the wind turbine generator set has malfunctioned and an early warning is issued. When determining whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature, and the third power generation temperature, the following steps are included: The values of the first power generation temperature, the second power generation temperature, and the third power generation temperature are sorted to obtain the maximum power generation temperature, the intermediate power generation temperature, and the minimum power generation temperature. Calculate the first power generation temperature difference between the maximum power generation temperature and the minimum power generation temperature, and determine whether the first power generation temperature difference is less than or equal to a preset power generation temperature difference. If so, then it is determined that the wind turbine generator set has not malfunctioned; If not, calculate the second power generation temperature difference between the maximum power generation temperature and the intermediate power generation temperature, calculate the third power generation temperature difference between the intermediate power generation temperature and the minimum power generation temperature, and determine whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference.

2. The intelligent early warning method for wind turbine generator sets according to claim 1, characterized in that, When setting the safe value for the power generation temperature of the wind turbine generator set based on the ambient temperature A of the wind turbine generator set, the following is included: The ambient temperature matrix E of the wind turbine generator set is set as E(E1, E2, E3, E4), where E1 is the first preset ambient temperature, E2 is the second preset ambient temperature, E3 is the third preset ambient temperature, and E4 is the fourth preset ambient temperature, and E1 < E2 < E3 < E4. A preset safe power generation temperature matrix F is defined as F(F1, F2, F3, F4, F5), where F1 is the first preset safe power generation temperature, F2 is the second preset safe power generation temperature, F3 is the third preset safe power generation temperature, F4 is the fourth preset safe power generation temperature, and F5 is the fifth preset safe power generation temperature, and F1 < F2 < F3 < F4 < F5; The safe value for the power generation temperature of the wind turbine generator set is set based on the relationship between the ambient temperature A of the wind turbine generator set and the ambient temperature of each preset wind turbine generator set: When A < E1, the first preset power generation temperature safety value F1 is selected as the power generation temperature safety value of the wind turbine generator set. When E1≤A<E2, the second preset power generation temperature safety value F2 is selected as the power generation temperature safety value of the wind turbine generator set. When E2≤A<E3, the third preset power generation temperature safety value F3 is selected as the power generation temperature safety value of the wind turbine generator set; When E3≤A<E4, the fourth preset power generation temperature safety value F4 is selected as the power generation temperature safety value of the wind turbine generator set; When E4≤A, the fifth preset power generation temperature safety value F5 is selected as the power generation temperature safety value of the wind turbine generator set.

3. The intelligent early warning method for wind turbine generator sets according to claim 1, characterized in that, When determining whether the wind turbine generator set has malfunctioned based on the second power generation temperature difference and the third power generation temperature difference, the following steps are included: Determine whether both the second and third power generation temperature differences are greater than the preset power generation temperature difference. If so, then it is determined that the wind turbine generator set has malfunctioned; If not, the values of the second power generation temperature difference and the third power generation temperature difference are sorted, and the wind turbine generator set is judged to have malfunctioned based on the larger value of the second power generation temperature difference and the third power generation temperature difference.

4. The intelligent early warning method for wind turbine generator sets according to claim 3, characterized in that, When determining whether the wind turbine generator set has malfunctioned based on the larger of the second and third power generation temperature differences, the following steps are included: Determine whether the larger of the second and third power generation temperature differences is greater than or equal to the warning threshold. If so, then it is determined that the wind turbine generator set has malfunctioned; If not, then it is determined that the wind turbine generator set has not malfunctioned.

5. The intelligent early warning method for wind turbine generator sets according to claim 1, characterized in that, When issuing early warnings, the following should be included: The maximum power generation temperature G is obtained, the warning level of the wind turbine generator is set according to the maximum power generation temperature G, and a warning is issued based on the warning level.

6. The intelligent early warning method for wind turbine generator sets according to claim 5, characterized in that, When setting the warning level of the wind turbine generator set based on the maximum power generation temperature G, the following are included: The maximum power generation temperature matrix M is preset, and M(M1, M2, M3) is set, where M1 is the first preset maximum power generation temperature, M2 is the second preset maximum power generation temperature, and M3 is the third preset maximum power generation temperature, and M1 < M2 < M3. Different warning levels are generated based on the relationship between the maximum power generation temperature G and each preset maximum power generation temperature: When G≤M1, a Level 1 warning is generated; When M1 < G ≤ M2, a level 2 warning is generated; When M2 < G ≤ M3, a level 3 warning is generated; When M3 < G, a level 4 warning level is generated.

7. The intelligent early warning method for wind turbine generator sets according to claim 5, characterized in that, After issuing a warning based on the aforementioned warning level, the process also includes: The warning prompt is used to invoke the pre-stored warning strategy in the database, and the wind turbine is processed according to the warning strategy.

8. A wind turbine generator intelligent early warning system, applied to the wind turbine generator intelligent early warning method as described in any one of claims 1-7, characterized in that, The system includes: The acquisition module is used to acquire the real-time output power of the wind turbine generator set; The judgment module is used to compare the real-time output power with the preset output power, and based on the comparison result, determine whether it is necessary to obtain the first power generation temperature of the wind turbine generator set. When the real-time output power is greater than or equal to the preset output power, it is determined that it is not necessary to obtain the first power generation temperature of the wind turbine generator set; when the real-time output power is less than the preset output power, the first power generation temperature of the wind turbine generator set is obtained. The data acquisition module is used to acquire the second power generation temperature of the wind turbine generator set within a first preset time period, and to acquire the third power generation temperature of the wind turbine generator set within a second preset time period. The early warning module is used to determine whether the wind turbine generator set has malfunctioned based on the first power generation temperature, the second power generation temperature and the third power generation temperature. If a malfunction occurs, an early warning prompt will be issued.