CN112668124A - Method and device for determining limit design load of wind generating set and computer readable storage medium - Google Patents
Method and device for determining limit design load of wind generating set and computer readable storage medium Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for determining a limit design load of a wind generating set and a computer readable storage medium. The method comprises the following steps: acquiring a limit design load of the wind generating set which is not corrected by gravity; obtaining a corresponding limit driving working condition according to a limit design load which is not corrected by gravity; determining a group of sub-conditions including an extreme driving condition; and carrying out gravity correction on the loads of the sub-working conditions to obtain the limit design loads subjected to gravity correction. Therefore, the ultimate design load of the wind generating set after gravity correction can be evaluated more accurately and quickly, the working efficiency is improved, and the ultimate design load of the wind generating set is effectively reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of wind power, in particular to a method and a device for determining a limit design load of a wind generating set and a computer readable storage medium.
Background
With the gradual depletion of energy sources such as coal and petroleum, human beings increasingly pay more attention to the utilization of renewable energy sources. Wind energy is increasingly gaining attention as a clean renewable energy source in all countries of the world. The wind power generation device is very suitable for and can be used for generating electricity by utilizing wind power according to local conditions in coastal islands, grassland pasturing areas, mountain areas and plateau areas with water shortage, fuel shortage and inconvenient traffic. Wind power generation refers to converting kinetic energy of wind into electric energy by using a wind generating set.
The wind generating set has to determine various loads generated by the wind generating set under various environments and operating conditions in the design process, and the aim of the wind generating set is to perform strength analysis, dynamic analysis and service life calculation on parts of the wind generating set so as to ensure that the wind generating set can normally operate in the designed service life. Limit design load F of existing wind generating setd0Using characteristic loads FkMultiplying by the local safety factor gamma of the loadf0Is obtained by
Fd0＝γf0Fk (1)
However, this method does not properly care about proper representation of the dynamic loads, does not distinguish gravity loads from other dynamic loads and does not analyze the combined structure of the design loads. For normal working conditions with gravity load as the leading factor, the method may cause local safety coefficient of the load to be larger, further cause limit design load to be larger, and is not beneficial to load reduction of the wind generating set.
Disclosure of Invention
The embodiment of the invention aims to provide a method and a device for determining a wind generating set limit design load and a computer readable storage medium, which can more accurately and quickly evaluate the limit design load of the wind generating set after gravity correction and improve the working efficiency.
One aspect of the embodiment of the invention provides a method for determining a limit design load of a wind generating set. The method comprises the following steps: acquiring a limit design load of the wind generating set which is not corrected by gravity; obtaining a corresponding limit driving working condition according to the limit design load which is not corrected by gravity; determining a set of sub-conditions including the limit driving condition; and performing gravity correction on the loads of the group of sub-working conditions to obtain a limit design load after the gravity correction.
Another aspect of the embodiments of the present invention also provides a device for determining a wind turbine generator system limit design load, which includes one or more processors, and is used for implementing the method for determining a wind turbine generator system limit design load as described above.
Yet another aspect of the embodiments of the present invention also provides a computer readable storage medium, on which a program is stored, which when executed by a processor, implements the method for determining the limit design load of a wind turbine generator set as described above.
Consider the similarity of simulated condition loads in a set of sub-conditions (subgroups) having the same or similar simulation setup. According to the method for determining the limit design load of the wind generating set, provided by the embodiment of the invention, a group of sub-working conditions including the limit driving working condition are found according to the limit driving working condition calculated without considering a gravity correction method. Then, considering that the contribution of the gravity load as the static load to the total load does not change greatly in the process of the working condition simulation time sequence, the gravity correction method only aims at the moment when the load extreme value appears in the simulation working condition to perform gravity correction. In addition, since the influence of the gravity load of the nose (RNA) portion of the wind turbine generator system on the total limit load is large, in order to accelerate the estimation speed of the limit design load and improve the working efficiency, the gravity correction is performed only by considering the gravity load of the nose portion, so as to obtain the limit design load after the gravity correction. Therefore, the method for determining the limit design load of the wind generating set is more convenient, simple and rapid in process; moreover, the method for determining the wind generating set limit design load of the embodiment of the invention emphasizes the importance degree of the dynamic load, so that the determined wind generating set limit design load is more accurate, and the wind generating set limit design load can be effectively reduced.
Drawings
FIG. 1 is a side schematic view of a wind turbine generator system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for determining a wind turbine generator system limit design load according to an embodiment of the present invention;
FIG. 3 is a detailed step of performing gravity correction on the determined loads of a set of sub-conditions to obtain a gravity-corrected limit design load according to an embodiment of the present invention;
fig. 4 is a schematic block diagram of a wind turbine generator set limit design load determining apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Fig. 1 discloses a schematic side view of a wind park 100 according to an embodiment of the invention. As shown in fig. 1, a wind park 100 comprises a plurality of blades 101, a nacelle 102, a hub 103 and a tower 104. A tower 104 extends upwardly from a foundation (not shown), a nacelle 102 is mounted on top of the tower 104, a hub 103 is mounted at one end of the nacelle 102, and a plurality of blades 101 are mounted on the hub 103.
The embodiment of the invention provides a method for determining the ultimate design load of a wind generating set 100 shown in FIG. 1. Fig. 2 discloses a flow chart of a method for determining the limit design load of the wind turbine generator system 100 according to an embodiment of the invention. As shown in fig. 2, the determination method includes steps S11 through S14.
In step S11, a limit design load of the wind turbine generator set without using gravity correction is obtained.
The characteristic load of the wind generating set without adopting gravity correction can be obtained based on wind turbine load simulation calculation software, such as commercial simulation software Bladed, and then, according to the characteristic load and by adopting the existing calculation method, as shown in the formula (1) above, the limit design load of the wind generating set without adopting gravity correction can be obtained.
In step S12, the corresponding limit driving condition is obtained according to the limit design load that is not corrected by gravity.
In step S13, a set of sub-conditions including the limit drive condition is determined.
In step S14, the loads for the set of sub-conditions are gravity corrected to obtain a gravity corrected limit design load.
Because the wind generating set is in a specified Design Load Case (DLC), the occurrence of the Load extreme value is related to the simulation setting of the working condition, i.e. the driving working condition (drive Case) generating the limit Load generally occurs in a group of sub-working conditions (subgroups) having the same or similar simulation setting. Therefore, according to the method for determining the limit design load of the wind generating set, provided by the embodiment of the invention, a group of sub-working conditions including the limit driving working condition is found according to the limit driving working condition calculated without considering a gravity correction method, and then, gravity correction is carried out only on the group of sub-working conditions, so that the limit design load after gravity correction is obtained. Therefore, the method for determining the limit design load of the wind generating set is more convenient, simple and rapid in process; moreover, the method for determining the wind generating set limit design load of the embodiment of the invention emphasizes the importance degree of the dynamic load, so that the determined wind generating set limit design load is more accurate, and the wind generating set limit design load can be effectively reduced.
Fig. 3 discloses specific steps of performing gravity correction on the determined loads of the set of sub-conditions to obtain a gravity-corrected limit design load according to an embodiment of the present invention. How to perform gravity correction on the determined loads of the set of sub-conditions to obtain the gravity-corrected limit design load will be described in detail below with reference to fig. 3.
As shown in fig. 3, the gravity correcting the loads of the set of sub-conditions of step S14 to obtain the gravity corrected limit design load may further include steps S21 to S24.
In step S21, basic parameter information of the wind turbine generator set is input.
The basic parameter information of the wind park may for example include, but is not limited to, at least a number of blade individual section masses, hub and nacelle masses and centroid positions, rotor cone angles and rotor pitch angles, etc.
In step S22, according to the set of sub-conditions determined in step S13 of fig. 2, then, according to a similar calculation method of the maximum design load without using gravity correction in step S11 of fig. 1, the load extreme value of each sub-condition in the set of sub-conditions is further determined, and then, the fan operating state parameter corresponding to the occurrence time of the load extreme value is further determined.
The wind turbine operating condition parameters may include, for example and without limitation, at least a plurality of blade cross-section positions, pitch angles, azimuth angles, and nacelle position attitudes, among others.
In step S23, the gravity load F of the wind turbine generator set under each sub-condition is calculated according to the basic parameter information of the wind turbine generator set input in step S21 and the fan operating state parameter corresponding to the occurrence time of the load extreme value of each sub-condition determined in step S22g。
Considering that the influence of the gravity load of the nose (RNA) part of the wind generating set on the total limit load is large, the evaluation speed of the limit design load is accelerated, and the working efficiency is improved. In an embodiment of the invention, only the gravity load of the head part of the wind turbine generator set in each sub-condition may be calculated in step S23.
In step S24, the gravity load F of the wind turbine generator set based on the sub-conditions calculated in step S23gCorrecting the extreme design load without gravity correction to obtain the extreme design load F after gravity correctiond。
Because the contribution of the gravity load as a static load to the total load does not change greatly in the load time sequence of the specified simulation working condition, in step S22 of the embodiment of the present invention, the gravity load is corrected only for the moment when the load extreme value occurs in the simulation working condition, so as to obtain the corrected limit load at the moment when the load extreme value occurs.
Continuing to refer to FIG. 3, in some embodiments, the calculated gravitational load F of the wind turbine generator set based on the various sub-conditions of step S24gThe correction of the limit design load without the gravity correction may include steps S31 to S34.
In step S31, the gravity load F for each sub-condition calculated in step S23 is determinedgIs there a favorable load?
In one embodiment, the calculated gravity loads F for the sub-conditions may be determined according to IEC regulationsgEither a favorable load or an unfavorable load. According to IEC61400-1(2019)7.6.2.2 footnote 15, when the gravity load calculated in step S23 can effectively relieve the overall load response of the wind turbine generator system, determining the gravity load calculated in step S23 as an advantageous load; otherwise, the gravity load calculated in step S23 is determined to be an unfavorable load.
In step S32, the local safety factor of the load under the corresponding sub-condition is calculated by using the corresponding calculation method based on the determination result of the gravity load of each sub-condition.
Specifically, in the case where the determination result in step S31 is yes, the process proceeds to step S321. In step S321, the gravity load F calculated in step S31gWhen the load is favorable, calculating the local safety factor of the load according to a first method specified in the IEC standard, and respectively obtaining the local safety factor gamma of the unfavorable load under the corresponding sub-working conditionsf，unfavAnd a local safety factor gamma of the favorable loadf，fav。
The first method specified in the IEC specification, specifically in section IEC61400-1(2019)7.6.2.2, is shown in the following table:
therefore, according to the table, the local safety factors gamma of the unfavorable load under the corresponding sub-working conditions can be respectively obtainedf，unfavAnd a local safety factor gamma of the favorable loadf，favAs follows:
γf，fav＝0.9
in the case where the determination result in step S31 is no, the process proceeds to step S322. In step S322, the gravity load calculated in step S31FgWhen the load is unfavorable, calculating and obtaining the local safety factor gamma of the load under the corresponding sub-working condition according to a second method specified in IEC (International electrotechnical Commission) specificationf。
The second method, specified in the IEC specification, is as follows:
for normal operating conditions:
wherein the content of the first and second substances,
for abnormal conditions:
γf＝1.1
therefore, according to the above content, the local safety factor γ of the load under the corresponding working condition can be calculated and obtainedf。
In step S33, the characteristic load F not corrected by gravity is corrected based on the load local safety factor calculated for each sub-conditionk。
Specifically, the local safety factor γ of the adverse load under each sub-condition is calculated in step S321f，unfavAnd a local safety factor gamma of the favorable loadf，favThereafter, the process may proceed to step S331. In step S331, for each sub-condition, based on the calculated gravitational load FgLocal safety coefficient gamma of favorable loadf，favProduct of (d) and characteristic load F never corrected by gravitykRemoving the gravity load FgLocal safety factor gamma of external load and adverse loadf，unfavThe sum of the products of the two methods is used to obtain a gravity corrected load extreme value FdiI.e. as shown in the following formula:
Fdi＝γf，favFg+γf，unfav(Fk-Fg)
the local safety factor γ of the load is calculated in step S322fThereafter, the process may proceedGo to step S332. In step S332, the characteristic load F is corrected based on the non-gravitykWith calculated local safety factor gamma of the loadfThe product of which yields the corrected load extreme F for each sub-operating modediI.e. as shown in the following formula:
Fdi＝γfFk
obtaining corrected load extreme value F of each sub-working conditiondiThereafter, the process may continue to step S34. In step S34, gravity corrected load extreme F may be based on each sub-conditiondiObtaining the ultimate design load F after gravity correctiond。
Corrected load extreme value F for each sub-operating modediCarrying out ultimate load post-treatment again to obtain ultimate design load F after gravity correctiond. During the re-processing of the extreme load, according to the IEC specification requirements, according to the different types of the Designed Load Conditions (DLC), a corresponding statistical analysis method of the extreme load may be selected, for example, the extreme value of the extreme load, the Mean value closest to the extreme value of the load (Mean method) or the Mean value of the first 50% of the extreme value (Half method) may be directly used as the extreme designed load F after the gravity correction of the Designed Load Conditions (DLC)d。
The method for determining the ultimate design load of the wind generating set in the embodiment of the invention refers to IEC (International electrotechnical Commission) specifications, only aims at the moment when the load extreme value of each sub-working condition in a group of sub-working conditions including the ultimate driving working condition occurs, only considers the RNA (ribonucleic acid) part to carry out gravity correction, and distinguishes the gravity load from other dynamic loads to calculate the ultimate design load of the wind generating set, so that the evaluation process of the ultimate design load considering the gravity correction is accelerated on the premise of ensuring the calculation accuracy, and the working efficiency is improved.
The method for determining the ultimate design load of the wind generating set provided by the embodiment of the invention can effectively reduce the ultimate design load.
For example, in one example, the blade root shimmy bending moment of the DLC14 working condition of a certain type of fan is taken as an example, the maximum design load without gravity correction is 9701kNm, and the corresponding maximum driving working condition is 14_ ca-09. Taking the limit driving working condition 14_ ca-09 as an input condition, and obtaining a group of sub working conditions 14_ ca-01-14 _ ca-12 including the limit driving working condition 14_ ca-09; respectively calculating the RNA partial gravity loads of the set of working conditions 14_ ca-01-14 _ ca-12 according to the processes described above and shown in FIG. 3, judging the calculated gravity loads as favorable/unfavorable loads, obtaining corresponding load local safety factors, and calculating the extreme value of the blade root swing matrix bending moment corrected by gravity; and re-processing the blade root swing matrix bending moment limit load after the gravity-corrected blade root swing matrix bending moment extreme value to obtain the gravity-corrected DLC14 blade root swing matrix bending moment limit design load.
The newly obtained DLC14 ultimate design load corrected by gravity is 9459kNm, which is reduced by 2.5 percent compared with the original load; the limit driving condition is changed to 14_ ca-01, the gravity load is an adverse load, and the local safety factor of the load is reduced from 1.35 to 1.316. Therefore, the method for determining the limit design load of the wind generating set can effectively reduce the limit design load.
In another example, taking the tower top front-back bending moment load of a certain type of fan as an example, the maximum design load without gravity correction is 12462.7kNm, and the corresponding maximum driving condition is 14_ cb-10. Taking the limit driving working condition 14_ cb-10 as an input condition, and obtaining a group of sub working conditions 14_ cb-01-14 _ cb-12 containing the limit driving working condition 14_ cb-10; respectively calculating the RNA partial gravity loads of the group of sub working conditions 14_ cb-01-14 _ cb-12 according to the processes shown in the above description and the figure 3, judging the calculated gravity loads as favorable/unfavorable loads, obtaining corresponding local safety factors of the loads, and calculating the extreme value of the front and rear bending moments of the tower top corrected by gravity; and carrying out the post-processing of the tower top front-back bending moment limit load on the tower top front-back bending moment extreme value subjected to the gravity correction again to obtain the tower top front-back bending moment load limit design load subjected to the gravity correction.
The newly obtained tower top front and rear bending moment load limit design load corrected by gravity is 11438.9kNm, which is reduced by 8.2 percent compared with the original load; the limit driving working condition is changed into 14_ cb-09, the gravity load is an unfavorable load, and the local safety factor of the load is reduced to 1.24 from 1.35. Therefore, the method for determining the limit design load of the wind generating set can effectively reduce the limit design load.
The embodiment of the invention also provides a device 200 for determining the limit design load of the wind generating set. As shown in fig. 4, the wind turbine generator set limit design load determining apparatus 200 includes one or more processors 201 for implementing the estimation method according to any of the above embodiments. In some embodiments, the determining apparatus 200 of wind turbine generator set limit design load may include a computer readable storage medium 202, which may store a program that may be invoked by the processor 201, and may include a non-volatile storage medium. In some embodiments, the wind park ultimate design load determining apparatus 200 may include a memory 203 and an interface 204. In some embodiments, the determining apparatus 200 for wind generating set limit design load of the embodiment of the present invention may further include other hardware according to practical applications.
The device for determining the wind generating set ultimate design load of the embodiment of the invention has the similar beneficial technical effects as the method for determining the wind generating set ultimate design load, and therefore, the details are not repeated.
The embodiment of the invention also provides a computer readable storage medium. The computer readable storage medium has a program stored thereon, which when executed by a processor, implements the method for determining the limit design load of a wind turbine generator set according to any of the above embodiments.
Embodiments of the invention may take the form of a computer program product embodied on one or more storage media including, but not limited to, disk storage, CD-ROM, optical storage, and the like, in which program code is embodied. Computer-readable storage media include permanent and non-permanent, removable and non-removable media and may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer readable storage media include, but are not limited to: phase change memory/resistive random access memory/magnetic memory/ferroelectric memory (PRAM/RRAM/MRAM/FeRAM) and like new memories, Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technologies, compact disc read only memory (CD-ROM), Digital Versatile Disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, may be used to store information that may be accessed by a computing device.
The method, the device and the computer readable storage medium for determining the limit design load of the wind generating set provided by the embodiment of the invention are described in detail above. The method, the apparatus and the computer readable storage medium for determining the ultimate design load of the wind turbine generator system according to the embodiments of the present invention are described herein by using specific examples, and the above descriptions of the embodiments are only used to help understand the core idea of the present invention and are not intended to limit the present invention. It should be noted that, for those skilled in the art, various improvements and modifications can be made without departing from the spirit and principle of the present invention, and these improvements and modifications should fall within the scope of the appended claims.
Claims (14)
1. A method for determining the limit design load of a wind generating set is characterized by comprising the following steps: the method comprises the following steps:
acquiring a limit design load of the wind generating set which is not corrected by gravity;
obtaining a corresponding limit driving working condition according to the limit design load which is not corrected by gravity;
determining a set of sub-conditions including the limit driving condition; and
and carrying out gravity correction on the loads of the group of sub-working conditions to obtain the limit design loads subjected to gravity correction.
2. The method of claim 1, wherein: the method for acquiring the limit design load of the wind generating set without adopting gravity correction comprises the following steps:
obtaining the characteristic load of the wind generating set which is not corrected by gravity based on fan load simulation calculation software; and
and obtaining the limit design load of the wind generating set which is not corrected by gravity according to the characteristic load.
3. The method of claim 2, wherein: the gravity correcting the loads of the group of sub-working conditions to obtain the limit design load after the gravity correction comprises:
determining a load extreme value of each sub-working condition in the group of sub-working conditions and a fan running state parameter corresponding to the moment when the load extreme value appears;
calculating the gravity load of the wind generating set under each sub-working condition according to the basic parameter information of the wind generating set and the fan running state parameter corresponding to the moment when the load extreme value of each sub-working condition appears; and
and correcting the limit design load which is not corrected by gravity based on the calculated gravity load of the wind generating set under each sub-working condition to obtain the limit design load after gravity correction.
4. The method of claim 3, wherein: the calculating the gravity load of the wind generating set of each sub-working condition comprises the following steps:
and calculating the gravity load of the head part of the wind generating set under each sub-working condition.
5. The method of claim 3, wherein: the correcting the limit design load without adopting gravity correction based on the calculated gravity load of the wind generating set under each sub-working condition comprises the following steps:
judging whether the calculated gravity load of each sub-working condition is a favorable load or not;
respectively adopting corresponding calculation methods to calculate the local safety coefficients of the load under the corresponding working conditions based on the judgment results of the gravity load of each sub-working condition; and
and correcting the characteristic load which is not corrected by gravity based on the local load safety coefficient calculated under each sub-working condition.
6. The method of claim 5, wherein: the step of judging whether the calculated gravity load of each sub-working condition is a favorable load comprises the following steps:
and judging the calculated gravity load of each sub-working condition as an advantageous load or an unfavorable load according to IEC (International electrotechnical Commission) specifications.
7. The method of claim 6, wherein: the step of calculating the local safety coefficient of the load under the corresponding working condition by respectively adopting the corresponding calculation method based on the judgment result of the gravity load under each sub-working condition comprises the following steps: when the calculated gravity load is the favorable load, calculating the local safety factor of the load according to a first method specified in the IEC standard to respectively obtain the local safety factor of the unfavorable load and the local safety factor of the favorable load under the corresponding sub-working conditions,
the step of correcting the characteristic load which is not corrected by gravity based on the load local safety coefficient calculated on the basis of each sub-working condition comprises the following steps:
for each sub-working condition, obtaining a gravity-corrected load extreme value based on the sum of the calculated product of the gravity load and the local safety factor of the advantageous load and the sum of the products of the loads except the gravity load in the characteristic load which is not corrected by gravity and the local safety factor of the disadvantageous load; and
and obtaining the limit design load after the gravity correction based on the load extreme value after the gravity correction of each sub-working condition.
8. The method of claim 6, wherein: the step of calculating the local safety coefficient of the load under the corresponding working condition by respectively adopting the corresponding calculation method based on the judgment result of the gravity load under each sub-working condition comprises the following steps: when the calculated gravity load is an unfavorable load, calculating and obtaining a load local safety factor under a corresponding sub-working condition according to a second method specified in the IEC standard;
the step of correcting the characteristic load which is not corrected by gravity based on the load local safety coefficient calculated on the basis of each sub-working condition comprises the following steps:
aiming at each sub-working condition, obtaining a load extreme value after gravity correction based on the product of the characteristic load which is not corrected by gravity and the calculated local safety factor of the load; and
and obtaining the limit design load after the gravity correction based on the load extreme value after the gravity correction of each sub-working condition.
9. The method of claim 7 or 8, wherein: the obtaining of the gravity-corrected limit design load based on the gravity-corrected load extreme value of each sub-working condition comprises:
and carrying out limit load post-processing on the gravity corrected load extreme value of each sub-working condition again to obtain the gravity corrected limit design load.
10. The method of claim 6, wherein: and when the calculated gravity load can effectively relieve the overall load response of the wind generating set, determining the calculated gravity load as a favorable load.
11. The method of claim 3, wherein: the basic parameter information of the wind generating set comprises the mass of each section of the blade, the mass and the mass center position of the hub and the engine room, the wind wheel cone angle and the wind wheel inclination angle.
12. The method of claim 3, wherein: the fan operation state parameters comprise the position of each section of the blade, the pitch angle, the azimuth angle and the position and the posture of the engine room.
13. An apparatus for determining wind park ultimate design loads, comprising one or more processors for implementing the method of determining wind park ultimate design loads according to any of claims 1-12.
14. A computer-readable storage medium, characterized in that it has a program stored thereon, which program, when being executed by a processor, carries out the method of determining a wind park ultimate design load according to any one of claims 1-12.
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