Self-adaptive wind speed adjusting method for wind generating set

Abstract

The invention relates to the technical field of wind generating sets, and discloses a self-adaptive wind speed adjusting method for a wind generating set, which comprises the following steps: presetting an acquisition time interval and an acquisition time node, and acquiring unit wind speed data of the wind generating set; first analysis is carried out on the unit wind speed data, sub-unit wind speed change factors are calculated, second analysis is carried out on the unit wind speed data, and unit wind speed influence factors are calculated; constructing a sub-unit wind speed change factor curve, and calculating a unit wind speed change factor; determining a unit wind speed change trend factor according to the unit wind speed influence factor and the unit wind speed change factor; whether self-adaptive wind speed adjustment is needed for the wind generating set is judged based on the unit wind speed change trend factor, if yes, a self-adaptive wind speed adjustment strategy of the wind generating set is set according to the unit wind speed change trend factor, and the wind speed change can be accurately adapted in real time by predicting the wind speed change trend; operation efficiency and stability of the wind generating set are improved, and service life of the set is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbines, and more particularly, to an adaptive wind speed regulation method for a wind turbine. Background Art

[0002] With the increasing global demand for renewable energy, wind power generation, as a clean and sustainable energy form, has been widely used. Wind turbines convert wind energy into electrical energy to provide power for the power grid. However, the volatility and uncertainty of wind speed pose challenges to the operating efficiency and stability of wind turbines.

[0003] Traditional wind turbines usually adopt fixed-speed or limited-variable speed control strategies, and these methods are difficult to achieve the optimal power output when the wind speed changes. The fixed-speed control strategy is inefficient at low wind speeds and may cause the unit to be overloaded at high wind speeds. Although the limited-variable speed control strategy improves the efficiency to a certain extent, it still cannot fully adapt to the rapid change of wind speed. Summary of the Invention

[0004] Embodiments of the present invention provide an adaptive wind speed regulation method for a wind turbine. The present invention can predict the trend of wind speed change, can adapt to the wind speed change in real time and accurately, improve the operating efficiency and stability of the wind turbine, extend the service life of the unit, and reduce the maintenance cost.

[0005] To achieve the above object, the present invention provides an adaptive wind speed regulation method for a wind turbine, including: Presetting a collection time interval and a collection time node corresponding to each collection time interval, and collecting the unit wind speed data of the wind turbine based on the collection time interval and the collection time node; Performing a first analysis on the unit wind speed data, calculating the sub-unit wind speed change factor of the wind turbine based on the result of the first analysis, performing a second analysis on the unit wind speed data, and calculating the unit wind speed influence factor of the wind turbine based on the result of the second analysis; Extracting all the sub-unit wind speed change factors, constructing a sub-unit wind speed change factor curve, and calculating the unit wind speed change factor of the wind turbine according to the sub-unit wind speed change factor curve; Determining the unit wind speed change trend factor of the wind turbine according to the unit wind speed influence factor and the unit wind speed change factor; Based on the relationship between the unit wind speed change trend factor and a preset unit wind speed change trend factor, determining whether it is necessary to perform adaptive wind speed regulation on the wind turbine. If so, setting the adaptive wind speed regulation strategy of the wind turbine according to the unit wind speed change trend factor.

[0006] Further, when performing a first analysis on the unit wind speed data of the unit and calculating the unit wind speed change factor of the wind turbine generator set based on the first analysis result, it includes: Taking the acquisition time nodes within each acquisition time interval as a group of unit wind speed data, and counting the number of groups of the unit wind speed data; Determining the difference between two adjacent acquisition time nodes in each group of unit wind speed data to obtain the unit wind speed data difference value; Calculating the sub-unit wind speed change factor of the wind turbine generator set according to the number of groups of the unit wind speed data and the unit wind speed data difference value.

[0007] Further, when calculating the sub-unit wind speed change factor of the wind turbine generator set according to the number of groups of the unit wind speed data and the unit wind speed data difference value, it includes: Calculating the sub-unit wind speed change factor of the wind turbine generator set according to the following formula: ; where s1 is the sub-unit wind speed change factor of the wind turbine generator set, a is the number of unit wind speed data in the group of unit wind speed data, f1 d1 is the d1-th unit wind speed data in the group of unit wind speed data, f2 d2 is the d2-th unit wind speed data in the group of unit wind speed data, and g is the number of groups of the unit wind speed data.

[0008] Further, when performing a second analysis on the unit wind speed data of the unit and calculating the unit wind speed influence factor of the wind turbine generator set based on the second analysis result, it includes: Obtaining the ideal unit wind speed data corresponding to the wind turbine generator set; Determining the maximum unit wind speed data and the minimum unit wind speed data from all the unit wind speed data, determining the maximum unit wind speed data group corresponding to the maximum unit wind speed data, and determining the minimum unit wind speed data group corresponding to the minimum unit wind speed data; Calculating the average value of the maximum unit wind speed data corresponding to the maximum unit wind speed data group, and calculating the average value of the minimum unit wind speed data corresponding to the minimum unit wind speed data group; Determining the difference between the average value of the maximum unit wind speed data and the ideal unit wind speed data for the maximum unit wind speed data; Determining the difference between the average value of the minimum unit wind speed data and the ideal unit wind speed data for the minimum unit wind speed data; Calculate the unit wind speed influence factor of the wind turbine based on the maximum unit wind speed data difference and the minimum unit wind speed data difference, where the unit wind speed influence factor of the wind turbine is the product value of the maximum unit wind speed data difference and the minimum unit wind speed data difference.

[0009] Further, when extracting all the sub-unit wind speed change factors, constructing the sub-unit wind speed change factor curve, and calculating the unit wind speed change factor of the wind turbine according to the unit wind speed change factor curve, it includes: Determine the first sub-unit wind speed change factor on the sub-unit wind speed change factor curve; Determine all the curve inflection points on the sub-unit wind speed change factor curve, and take the sub-unit wind speed change factors between the first sub-unit wind speed change factor and the first curve inflection point as the first sub-unit wind speed change factor curve segment; Determine the second curve inflection point, and take the sub-unit wind speed change factors between the first curve inflection point and the second curve inflection point as the second sub-unit wind speed change factor curve segment; Determine the third curve inflection point, and take the sub-unit wind speed change factors between the third curve inflection point and the second curve inflection point as the third sub-unit wind speed change factor curve segment; Repeat the above steps to determine multiple sub-unit wind speed change factor curve segments; Pairwise combine the sub-unit wind speed change factors on the first sub-unit wind speed change factor curve segment and the second sub-unit wind speed change factor curve segment to obtain multiple sub-unit wind speed change factor combinations; Pairwise combine the sub-unit wind speed change factors on the third sub-unit wind speed change factor curve segment and the fourth sub-unit wind speed change factor curve segment to obtain multiple sub-unit wind speed change factor combinations; Repeat the above steps to determine multiple sub-unit wind speed change factor combinations; Calculate the unit wind speed change factor of the wind turbine based on all the sub-unit wind speed change factor combinations.

[0010] Further, when calculating the unit wind speed change factor of the wind turbine based on all the sub-unit wind speed change factor combinations, it includes: Calculate the unit wind speed change factor of the wind turbine according to the following formula: ; where k is the unit wind speed change factor of the wind turbine, n is the number of sub-unit wind speed change factor combinations, v i is a sub-unit wind speed change factor corresponding to the i-th sub-unit wind speed change factor combination, b iis another sub-unit wind speed change factor corresponding to the i-th sub-unit wind speed change factor combination, and m1(v i ) is the variance of all sub-unit wind speed change factors except v i . m2(b i ) is the variance of all sub-unit wind speed change factors except b i .

[0011] Further, when determining whether to perform adaptive wind speed regulation on the wind turbine based on the relationship between the unit wind speed change trend factor and the preset unit wind speed change trend factor, it includes: When the unit wind speed change trend factor is equal to the preset unit wind speed change trend factor, it is determined that no adaptive wind speed regulation is required for the wind turbine; When the unit wind speed change trend factor is less than or greater than the preset unit wind speed change trend factor, it is determined that adaptive wind speed regulation is required for the wind turbine.

[0012] Further, when setting the adaptive wind speed regulation strategy of the wind turbine according to the unit wind speed change trend factor, it includes: When the unit wind speed change trend factor is greater than the preset unit wind speed change trend factor, obtain the generator speed of the wind turbine; Obtain the generator speed of the wind turbine; Regulate the generator speed based on the unit wind speed change trend factor; Preset a first preset unit wind speed change trend factor and a second preset unit wind speed change trend factor in advance; Preset a first preset strategy adjustment value, a second preset strategy adjustment value, and a third preset strategy adjustment value in advance; When the unit wind speed change trend factor is less than the first preset unit wind speed change trend factor, regulate the generator speed according to the first preset strategy adjustment value to obtain the adaptive wind speed regulation strategy of the wind turbine; When the unit wind speed change trend factor is greater than or equal to the first preset unit wind speed change trend factor and less than the second preset unit wind speed change trend factor, regulate the generator speed according to the second preset strategy adjustment value to obtain the adaptive wind speed regulation strategy of the wind turbine; When the unit wind speed change trend factor is greater than or equal to the second preset unit wind speed change trend factor, regulate the generator speed according to the third preset strategy adjustment value to obtain the adaptive wind speed regulation strategy of the wind turbine.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention discloses an adaptive wind speed regulation method for a wind turbine generator. A preset acquisition time interval and acquisition time nodes are set to collect the wind speed data of the wind turbine generator; the collected wind speed data of the unit is subjected to a first analysis to calculate the sub-unit wind speed change factor, and the wind speed data of the unit is subjected to a second analysis to calculate the unit wind speed influence factor; a sub-unit wind speed change factor curve is constructed to calculate the unit wind speed change factor; the unit wind speed change trend factor is determined according to the unit wind speed influence factor and the unit wind speed change factor; based on the unit wind speed change trend factor, it is judged whether it is necessary to perform adaptive wind speed regulation on the wind turbine generator. If so, an adaptive wind speed regulation strategy for the wind turbine generator is set according to the unit wind speed change trend factor. By predicting the wind speed change trend, it is possible to adapt to the wind speed change in real time and accurately, improve the operation efficiency and stability of the wind turbine generator, and extend the service life of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 A flowchart showing an adaptive wind speed regulation method for a wind turbine generator in an embodiment of the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further describes in detail the specific embodiments of the present invention with reference to the drawings and embodiments. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0016] In the description of the present 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 drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0017] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0018] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0019] The following is a description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0020] As Figure 1 shown, an embodiment of the present invention discloses an adaptive wind speed adjustment method for a wind turbine generator, including: S110: Preset a collection time interval and collection time nodes corresponding to each collection time interval, and collect the wind speed data of the wind turbine generator based on the collection time interval and the collection time nodes. In this embodiment, the collection time intervals are from the 1st minute to the 10th minute, from the 11th minute to the 20th minute, from the 21st minute to the 30th minute, from the 31st minute to the 40th minute, from the 41st minute to the 50th minute, and from the 51st minute to the 60th minute. Each collection time interval includes multiple collection time nodes. For example, the collection time nodes corresponding to the 1st minute to the 10th minute are the 1st minute, the 2nd minute, the 3rd minute, the 4th minute, the 5th minute, the 6th minute, the 7th minute, the 8th minute, the 9th minute, and the 10th minute. The rest are not shown one by one.

[0021] In this embodiment, the wind speed data of the wind turbine generator refers to the wind speed.

[0022] S120: Perform a first analysis on the wind speed data of the wind turbine generator, calculate the sub-wind turbine generator wind speed change factor based on the first analysis result, perform a second analysis on the wind speed data of the wind turbine generator, and calculate the wind turbine generator wind speed influence factor based on the second analysis result. In some embodiments of the present application, when performing a first analysis on the wind speed data of the wind turbine generator and calculating the sub-wind turbine generator wind speed change factor based on the first analysis result, it includes: Regarding the collection time nodes within each collection time interval as a group of wind speed data of the wind turbine generator, and counting the number of groups of the wind speed data of the wind turbine generator. Determine the difference between two adjacent collection time nodes in each group of wind speed data of the wind turbine generator to obtain the wind speed data difference value. Calculate the sub-wind turbine generator wind speed change factor based on the number of groups of the wind speed data of the wind turbine generator and the wind speed data difference value.

[0023] In this embodiment, if the wind turbine speed data group is t1, t2, t3, t4, t5, t6, t7, t8, t9, t10, the difference value of the wind turbine speed data here refers to t2 - t1, t3 - t2, t4 - t3, etc., and finally the absolute value is taken.

[0024] The beneficial effects of the above technical solution are: The present invention calculates the sub - wind turbine speed change factor of the wind turbine generator according to the number of groups of the wind turbine speed data group and the difference value of the wind turbine speed data, and can determine the wind speed change of the wind turbine generator, providing data support for calculating the wind speed change trend factor of the wind turbine.

[0025] In some embodiments of the present application, when calculating the sub - wind turbine speed change factor of the wind turbine generator according to the number of groups of the wind turbine speed data group and the difference value of the wind turbine speed data, it includes: Calculate the sub - wind turbine speed change factor of the wind turbine generator according to the following formula: ; where s1 is the sub - wind turbine speed change factor of the wind turbine generator, a is the number of wind turbine speed data in the wind turbine speed data group, f1 d1 is the d1 - th wind turbine speed data in the wind turbine speed data group, f2 d2 is the d2 - th wind turbine speed data in the wind turbine speed data group, and g is the number of groups of the wind turbine speed data group.

[0026] In some embodiments of the present application, when performing a second analysis on the wind turbine speed data and calculating the wind turbine speed influence factor of the wind turbine generator based on the second analysis result, it includes: Obtain the ideal wind turbine speed data corresponding to the wind turbine generator; Determine the maximum wind turbine speed data and the minimum wind turbine speed data from all the wind turbine speed data, determine the maximum wind turbine speed data group corresponding to the maximum wind turbine speed data, and determine the minimum wind turbine speed data group corresponding to the minimum wind turbine speed data; Calculate the average value of the maximum wind turbine speed data corresponding to the maximum wind turbine speed data group, and calculate the average value of the minimum wind turbine speed data corresponding to the minimum wind turbine speed data group; Determine the difference between the average value of the maximum wind turbine speed data and the ideal maximum wind turbine speed data; Determine the difference between the average value of the minimum wind turbine speed data and the ideal minimum wind turbine speed data; Calculate the unit wind speed influence factor of the wind turbine based on the maximum unit wind speed data difference and the minimum unit wind speed data difference, where the unit wind speed influence factor of the wind turbine is the product value of the maximum unit wind speed data difference and the minimum unit wind speed data difference.

[0027] In this embodiment, the ideal unit wind speed data is set in advance, and the ideal unit wind speed data can enable the wind turbine to exhibit the best power generation performance.

[0028] In this embodiment, if the quantities corresponding to the maximum unit wind speed data and the minimum unit wind speed data are not unique, that is, greater than 1, then select the maximum unit wind speed data group and the minimum unit wind speed data group according to the acquisition time interval. For example, if the acquisition time interval of the unit wind speed data group corresponding to the maximum unit wind speed data is from the 11th minute to the 20th minute and from the 51st minute to the 60th minute, then select the 51st minute to the 60th minute as the maximum unit wind speed data group. Other situations are not shown one by one here.

[0029] The beneficial effects of the above technical solution are: The present invention calculates the unit wind speed influence factor of the wind turbine based on the maximum unit wind speed data difference and the minimum unit wind speed data difference, which can not only ensure the calculation accuracy and calculation efficiency of the unit wind speed influence factor, but also provide data support for one aspect of the calculation of the unit wind speed change trend factor.

[0030] S130: Extract all sub-unit wind speed change factors, construct a sub-unit wind speed change factor curve, and calculate the unit wind speed change factor of the wind turbine according to the unit wind speed change factor curve; In some embodiments of the present application, when extracting all sub-unit wind speed change factors, constructing a sub-unit wind speed change factor curve, and calculating the unit wind speed change factor of the wind turbine, it includes: Determine the first sub-unit wind speed change factor on the sub-unit wind speed change factor curve; Determine all curve inflection points on the sub-unit wind speed change factor curve, and use the sub-unit wind speed change factors between the first sub-unit wind speed change factor and the first curve inflection point as the first sub-unit wind speed change factor curve segment; Determine the second curve inflection point, and use the sub-unit wind speed change factors between the first curve inflection point and the second curve inflection point as the second sub-unit wind speed change factor curve segment; Determine the third curve inflection point, and use the sub-unit wind speed change factors between the third curve inflection point and the second curve inflection point as the third sub-unit wind speed change factor curve segment; Repeat the above steps to determine multiple sub-unit wind speed change factor curve segments; Pairwise combine the sub - unit wind speed change factors on the first sub - unit wind speed change factor curve segment and the second sub - unit wind speed change factor curve segment to obtain multiple sub - unit wind speed change factor combinations; Pairwise combine the sub - unit wind speed change factors on the third sub - unit wind speed change factor curve segment and the fourth sub - unit wind speed change factor curve segment to obtain multiple sub - unit wind speed change factor combinations; Repeat the above steps to determine multiple sub - unit wind speed change factor combinations; Calculate the wind turbine unit wind speed change factor based on all the sub - unit wind speed change factor combinations.

[0031] In this embodiment, when determining the sub - unit wind speed change factor curve segment, the sub - unit wind speed change factor corresponding to the curve inflection point is not included.

[0032] In this embodiment, if there is a separate sub - unit wind speed change factor, it can be deleted.

[0033] The beneficial effects of the above technical solution are: The present invention calculates the wind turbine unit wind speed change factor based on all the sub - unit wind speed change factor combinations, and the unit wind speed change factor can further lay a foundation for the adaptive wind speed regulation of the wind turbine.

[0034] In some embodiments of the present application, when calculating the wind turbine unit wind speed change factor based on all the sub - unit wind speed change factor combinations, it includes: Calculate the wind turbine unit wind speed change factor according to the following formula: ; where k is the wind turbine unit wind speed change factor, n is the number of sub - unit wind speed change factor combinations, v i is a sub - unit wind speed change factor corresponding to the i - th sub - unit wind speed change factor combination, b i is another sub - unit wind speed change factor corresponding to the i - th sub - unit wind speed change factor combination, m1(v i ) is the variance of all sub - unit wind speed change factors except v i , and m2(b i ) is the variance of all sub - unit wind speed change factors except b i .

[0035] S140: Determine the wind turbine unit wind speed change trend factor according to the unit wind speed influence factor and the unit wind speed change factor; In this embodiment, a first calculation coefficient is configured for the wind speed influence factor of the unit, and a second calculation coefficient is configured for the wind speed change factor of the unit. Calculate the first product value of the wind speed influence factor of the unit and the first calculation coefficient, calculate the second product value of the wind speed change factor of the unit and the second calculation coefficient, and calculate the sum value of the first product value and the second product value to obtain the wind speed change trend factor of the unit.

[0036] The beneficial effect of the above technical solution is that the present invention determines the wind speed change trend factor of the wind turbine according to the wind speed influence factor of the unit and the wind speed change factor of the unit, ensuring the calculation accuracy of the wind speed change trend factor. The wind speed change trend factor can reflect the wind force change trend of the wind turbine.

[0037] S150: Based on the relationship between the wind speed change trend factor of the unit and the preset wind speed change trend factor of the unit, determine whether it is necessary to perform adaptive wind speed adjustment on the wind turbine. If so, set the adaptive wind speed adjustment strategy of the wind turbine according to the wind speed change trend factor of the unit.

[0038] In some embodiments of the present application, when determining whether it is necessary to perform adaptive wind speed adjustment on the wind turbine based on the relationship between the wind speed change trend factor of the unit and the preset wind speed change trend factor of the unit, it includes: When the wind speed change trend factor of the unit is equal to the preset wind speed change trend factor of the unit, it is determined that it is not necessary to perform adaptive wind speed adjustment on the wind turbine; When the wind speed change trend factor of the unit is less than or greater than the preset wind speed change trend factor of the unit, it is determined that it is necessary to perform adaptive wind speed adjustment on the wind turbine.

[0039] In this embodiment, the preset wind speed change trend factor of the unit is pre-set, preferably 4 here, and can be adjusted according to the actual situation. When the wind speed change trend factor of the unit is equal to 4, at this time, the wind speed change trend is relatively small compared to the real-time wind speed, and there is no need to perform adaptive wind speed adjustment on the wind turbine to avoid energy loss.

[0040] In some embodiments of the present application, when setting the adaptive wind speed adjustment strategy of the wind turbine according to the wind speed change trend factor of the unit, it includes: When the wind speed change trend factor of the unit is greater than the preset wind speed change trend factor of the unit, obtain the generator speed of the wind turbine; Adjust the generator speed based on the wind speed change trend factor of the unit; Preset a first preset wind speed change trend factor and a second preset wind speed change trend factor in advance; Preset the first preset strategy adjustment value, the second preset strategy adjustment value, and the third preset strategy adjustment value; When the unit wind speed change trend factor is less than the first preset unit wind speed change trend factor, the generator speed is adjusted according to the first preset strategy adjustment value to obtain the adaptive wind speed adjustment strategy of the wind turbine generator set; When the unit wind speed change trend factor is greater than or equal to the first preset unit wind speed change trend factor and less than the second preset unit wind speed change trend factor, the generator speed is adjusted according to the second preset strategy adjustment value to obtain the adaptive wind speed adjustment strategy of the wind turbine generator set; When the unit wind speed change trend factor is greater than or equal to the second preset unit wind speed change trend factor, the generator speed is adjusted according to the third preset strategy adjustment value to obtain the adaptive wind speed adjustment strategy of the wind turbine generator set.

[0041] In this embodiment, the first preset unit wind speed change trend factor is less than the second preset unit wind speed change trend factor, and the first preset unit wind speed change trend factor is preferably 6, and the second preset unit wind speed change trend factor is preferably 10, and can be specifically adjusted according to the actual situation.

[0042] In this embodiment, the first preset strategy adjustment value is less than the second preset strategy adjustment value is less than the third preset strategy adjustment value, and the first preset strategy adjustment value is preferably 1.05, the second preset strategy adjustment value is preferably 1.1, and the first preset strategy adjustment value is preferably 1.15, and can be specifically adjusted according to the actual situation.

[0043] In this embodiment, the product value of the preset strategy adjustment value and the generator speed is calculated as the adaptive wind speed adjustment strategy of the wind turbine generator set.

[0044] The beneficial effect of the above technical solution is that when the unit wind speed change trend factor is greater than the preset unit wind speed change trend factor, at this time, the wind speed gradually increases, and the generator speed should be increased to better utilize the wind speed and improve the power generation performance.

[0045] In some embodiments of the present application, when setting the adaptive wind speed adjustment strategy of the wind turbine generator set according to the unit wind speed change trend factor, it further includes: When the unit wind speed change trend factor is less than the preset unit wind speed change trend factor, preset the third preset unit wind speed change trend factor and the fourth preset unit wind speed change trend factor; Preset the fourth preset strategy adjustment value, the fifth preset strategy adjustment value, and the sixth preset strategy adjustment value; When the unit wind speed change trend factor is less than the third preset unit wind speed change trend factor, the generator speed is adjusted according to the fourth preset strategy adjustment value to obtain the adaptive wind speed adjustment strategy of the wind turbine generator set; When the unit wind speed change trend factor is greater than or equal to the third preset unit wind speed change trend factor and less than the fourth preset unit wind speed change trend factor, the generator speed is adjusted according to the fifth preset strategy adjustment value to obtain the adaptive wind speed adjustment strategy of the wind turbine generator set; When the unit wind speed change trend factor is greater than or equal to the fourth preset unit wind speed change trend factor, the generator speed is adjusted according to the sixth preset strategy adjustment value to obtain the adaptive wind speed adjustment strategy of the wind turbine generator set.

[0046] In this embodiment, the third preset unit wind speed change trend factor is less than the fourth preset unit wind speed change trend factor, and the third preset unit wind speed change trend factor is preferably 3, and the second preset unit wind speed change trend factor is preferably 1, and can be specifically adjusted according to the actual situation.

[0047] In this embodiment, the fourth preset strategy adjustment value is less than the fifth preset strategy adjustment value is less than the sixth preset strategy adjustment value, and the fourth preset strategy adjustment value is preferably 0.85, the fifth preset strategy adjustment value is preferably 0.9, and the sixth preset strategy adjustment value is preferably 0.95, and can be specifically adjusted according to the actual situation.

[0048] In this embodiment, the product value of the preset strategy adjustment value and the generator speed is calculated as the adaptive wind speed adjustment strategy of the wind turbine generator set.

[0049] The beneficial effects of the above technical solution are: when the unit wind speed change trend factor is less than the preset unit wind speed change trend factor, at this time, the wind speed gradually decreases, and the generator speed should be reduced to avoid energy loss and extend the service life of the generator.

[0050] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be combined with each other in any way, and only for the sake of saving space and resources, the description of all these combinations is not given in this specification.

[0052] Those of ordinary skill in the art can understand that the above are only the 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for adaptive wind speed regulation for a wind turbine generator set, characterized in that: include: Preset a collection time interval and a collection time node corresponding to each collection time interval, and collect wind speed data of the wind turbine generator set based on the collection time interval and the collection time node; Performing a first analysis on the wind speed data of the unit, calculating a wind speed variation factor of a sub-unit of the wind generator set based on the first analysis result, performing a second analysis on the wind speed data of the unit, and calculating a unit wind speed influence factor of the wind generator set based on the second analysis result; Extracting all sub-unit wind speed variation factors, constructing a sub-unit wind speed variation factor curve, and calculating the unit wind speed variation factor of the wind turbine generator set according to the unit wind speed variation factor curve; Determine a wind speed change trend factor of the wind turbine generator set according to the wind speed influence factor of the wind turbine set and the wind speed change factor of the wind turbine set; Based on the relationship between the wind speed change trend factor of the unit and the preset wind speed change trend factor of the unit, it is determined whether it is necessary to perform adaptive wind speed adjustment on the wind turbine generator set. If so, the adaptive wind speed adjustment strategy of the wind turbine generator set is set according to the wind speed change trend factor of the unit.

2. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 1, characterized in that: When performing a first analysis on the wind speed data of the wind turbine generator set and calculating the wind speed variation factor of the wind turbine generator set based on the first analysis result, the method includes: The collection time node within each collection time interval is regarded as a wind speed data group of a unit, and the number of wind speed data groups of the unit is counted; Determine the difference between two adjacent acquisition time nodes in each wind speed data group of each unit to obtain the wind speed data difference value of the unit; The wind speed variation factor of the sub-unit of the wind turbine generator set is calculated according to the group number of the wind speed data groups of the unit and the difference value of the wind speed data of the unit.

3. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 1, characterized in that: When calculating the wind speed variation factor of the sub-unit of the wind turbine generator set according to the number of wind speed data groups of the wind turbine generator set and the wind speed data difference value of the wind turbine generator set, it includes: The wind speed variation factor of the sub-unit of the wind turbine generator set is calculated according to the following formula: ； Among them, s1 is the wind speed change factor of the wind turbine sub-unit, a is the number of wind speed data in the wind speed data group, f1 d1 is the wind speed data of the d1th unit in the wind speed data group, f2 d2 is the d2th unit wind speed data in the unit wind speed data group, and g is the number of unit wind speed data groups.

4. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 3, characterized in that: When performing a second analysis on the wind speed data of the wind turbine generator set and calculating the wind speed influence factor of the wind turbine generator set based on the second analysis result, the method includes: Acquiring ideal wind speed data corresponding to the wind turbine generator set; Determine the maximum unit wind speed data and the minimum unit wind speed data from all the unit wind speed data, and determine the maximum unit wind speed data group corresponding to the maximum unit wind speed data, and determine the minimum unit wind speed data group corresponding to the minimum unit wind speed data; Calculate the mean value of the maximum wind speed data of the maximum unit corresponding to the maximum wind speed data group, and calculate the mean value of the minimum wind speed data of the minimum unit corresponding to the minimum wind speed data group; Determine a maximum unit wind speed data difference between the mean value of the maximum unit wind speed data and the ideal unit wind speed data; Determine a difference between the minimum wind speed data mean of the minimum wind speed data of the unit and the minimum wind speed data of the ideal wind speed data of the unit; The unit wind speed influence factor of the wind turbine generator set is calculated based on the maximum unit wind speed data difference and the minimum unit wind speed data difference, wherein the unit wind speed influence factor of the wind turbine generator set is the product of the maximum unit wind speed data difference and the minimum unit wind speed data difference.

5. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 1, characterized in that: When extracting all sub-unit wind speed variation factors, constructing a sub-unit wind speed variation factor curve, and calculating the unit wind speed variation factor of the wind turbine generator set according to the unit wind speed variation factor curve, it includes: Determining a first sub-unit wind speed variation factor on the sub-unit wind speed variation factor curve; Determine all curve inflection points on the sub-unit wind speed variation factor curve, and use the sub-unit wind speed variation factor between the first sub-unit wind speed variation factor and the first curve inflection point as the first sub-unit wind speed variation factor curve segment; Determine a second curve inflection point, and use the sub-unit wind speed variation factor between the first curve inflection point and the second curve inflection point as a second sub-unit wind speed variation factor curve segment; Determine a third curve inflection point, and use the sub-unit wind speed variation factor between the third curve inflection point and the second curve inflection point as a third sub-unit wind speed variation factor curve segment; Repeat the above steps to determine the wind speed variation factor curve segments of multiple sub-units; Combining the sub-unit wind speed change factors on the first sub-unit wind speed change factor curve segment and the second sub-unit wind speed change factor curve segment in pairs to obtain a plurality of sub-unit wind speed change factor combinations; Combining the sub-unit wind speed change factors on the third sub-unit wind speed change factor curve segment and the fourth sub-unit wind speed change factor curve segment in pairs to obtain a plurality of sub-unit wind speed change factor combinations; Repeat the above steps to determine the combination of wind speed change factors of multiple sub-units; The wind speed variation factor of the wind turbine generator set is calculated based on the combination of wind speed variation factors of all sub-sets.

6. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 5, characterized in that: When calculating the wind speed variation factor of the wind turbine generator set based on the combination of wind speed variation factors of all sub-sets, it includes: The wind speed variation factor of the wind turbine generator set is calculated according to the following formula: ； Where k is the wind speed variation factor of the wind turbine generator set, n is the number of wind speed variation factor combinations of the sub-units, and v i is a sub-unit wind speed change factor corresponding to the i-th sub-unit wind speed change factor combination, b i is the wind speed change factor of another sub-unit corresponding to the i-th sub-unit wind speed change factor combination, m1 (v i ) is divided by v i Variance of wind speed variation factors of all external sub-units, m2 (b i ) is divided by b i The variance of wind speed variation factors of all sub-units outside.

7. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 1, characterized in that: When judging whether it is necessary to perform adaptive wind speed adjustment on the wind turbine generator set based on the relationship between the wind speed change trend factor of the set and the preset wind speed change trend factor of the set, the method includes: When the wind speed change trend factor of the unit is equal to the preset wind speed change trend factor of the unit, it is determined that there is no need to perform adaptive wind speed adjustment on the wind turbine generator set; When the wind speed change trend factor of the unit is less than or greater than the preset wind speed change trend factor of the unit, it is determined that the wind turbine generator set needs to be adaptively adjusted in terms of wind speed.

8. The method for adaptive wind speed regulation for a wind turbine generator set according to claim 1, characterized in that: When setting the adaptive wind speed adjustment strategy of the wind turbine generator set according to the wind speed change trend factor of the set, it includes: When the wind speed change trend factor of the unit is greater than the preset wind speed change trend factor of the unit, obtaining the generator speed of the wind generator set; Adjusting the generator speed based on the wind speed change trend factor of the unit; Presetting a first preset unit wind speed change trend factor and a second preset unit wind speed change trend factor; Presetting a first preset strategy adjustment value, a second preset strategy adjustment value, and a third preset strategy adjustment value; When the wind speed change trend factor of the unit is less than the first preset wind speed change trend factor of the unit, the generator speed is adjusted according to the first preset strategy adjustment value to obtain an adaptive wind speed adjustment strategy for the wind generator set; When the wind speed change trend factor of the unit is greater than or equal to the first preset wind speed change trend factor of the unit, and less than the second preset wind speed change trend factor of the unit, the generator speed is adjusted according to the second preset strategy adjustment value to obtain an adaptive wind speed adjustment strategy for the wind turbine generator set; When the wind speed change trend factor of the unit is greater than or equal to the second preset wind speed change trend factor of the unit, the generator speed is adjusted according to the third preset strategy adjustment value to obtain an adaptive wind speed adjustment strategy for the wind generator set.

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