CN113468712A - Method and device for determining service life of structural stress component of wind turbine generator - Google Patents
Method and device for determining service life of structural stress component of wind turbine generator Download PDFInfo
- Publication number
- CN113468712A CN113468712A CN202010238423.2A CN202010238423A CN113468712A CN 113468712 A CN113468712 A CN 113468712A CN 202010238423 A CN202010238423 A CN 202010238423A CN 113468712 A CN113468712 A CN 113468712A
- Authority
- CN
- China
- Prior art keywords
- service life
- component
- wind turbine
- safety check
- limited
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000013461 design Methods 0.000 claims abstract description 124
- 239000000463 material Substances 0.000 claims abstract description 63
- 230000006870 function Effects 0.000 claims description 215
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 7
- 230000002459 sustained effect Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000035882 stress Effects 0.000 description 40
- 230000005540 biological transmission Effects 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000013500 data storage Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
A method and equipment for determining the service life of a stressed part of a wind turbine structure are provided, wherein the method comprises the following steps: constructing a safety check index function aiming at a structural stress component of the wind turbine generator; and determining the service life of the stress part of the wind turbine structure based on the constructed safety check index function, wherein the safety check index function is constructed based on the complete machine design life of the wind turbine under the standard design wind parameters, the fatigue material coefficient of the stress part of the wind turbine structure and the service life of the stress part of the wind turbine structure, and is used for representing the corresponding relation between the service life of the stress part of the wind turbine structure and the safety check index. By adopting the method and the equipment, the service life of each part of the wind turbine generator at a specific site can be accurately and quickly evaluated, and a favorable foundation is laid for subsequently selecting a proper service life customization scheme and operation and maintenance strategy for the whole wind turbine generator, so that the benefit maximization of a wind power plant is ensured.
Description
Technical Field
The present invention relates generally to the field of wind power generation, and more particularly, to a method and apparatus for determining the service life of stressed components of a wind turbine structure.
Background
With the increase of the operation time of the wind turbine generator, the wind power generation equipment inevitably suffers from aging failure, and potential safety hazards and even economic losses are brought to wind power generation enterprises. The method can accurately predict the service life of the stress part of the wind turbine structure, thereby reducing potential safety hazards and economic loss.
At present, a common method is to give a wind parameter and estimate the service life, and judge the load adaptability of the whole machine under the estimated service life, so as to estimate the service life of the whole machine of the wind turbine generator, but this method can only estimate the service life of the whole machine of the wind turbine generator, but cannot reflect the estimated service life of each structural stressed component of the wind turbine generator, and the existing other service life prediction methods are limited to specific equivalent loads or specific structural stressed components of the wind turbine generator, and are only effective in predicting the service life of part of the structural stressed components of the wind turbine generator. The method is difficult to predict the service life of all the stress components of the wind turbine structure.
Disclosure of Invention
The exemplary embodiment of the invention provides a method and equipment for determining the service life of a stressed component of a wind turbine generator system structure, which can overcome the defect that the existing method for predicting the service life of the stressed component of the wind turbine generator system structure cannot be applied to most of the stressed components of the wind turbine generator system structure.
According to an aspect of an exemplary embodiment of the present invention, a method for determining a service life of a stressed component of a wind turbine structure is provided, wherein the method includes: constructing a safety check index function aiming at a structural stress component of the wind turbine generator; and determining the service life of the stress part of the wind turbine structure based on the constructed safety check index function, wherein the safety check index function is constructed based on the complete machine design life of the wind turbine under the standard design wind parameters, the fatigue material coefficient of the stress part of the wind turbine structure and the service life of the stress part of the wind turbine structure, and is used for representing the corresponding relation between the service life of the stress part of the wind turbine structure and the safety check index.
Optionally, the wind turbine structural stress component comprises a limited component and an unlimited component, wherein the limited component and the unlimited component are determined by: and determining a part needing to obtain a manufacturer side safety check index function corresponding to the estimated service life from a manufacturer of the wind turbine generator structural stressed part as a limited part, and determining a part needing not to obtain the manufacturer side safety check index function corresponding to the estimated service life from the manufacturer of the wind turbine generator structural stressed part as an unlimited part.
Optionally, the wind turbine structural stressed component comprises a limited component, and the safety check indicator function comprises a limited safety check indicator function corresponding to each of a plurality of estimated service lives, wherein the service life of the limited component is determined by: the method comprises the steps of arranging a plurality of estimated service lives in a descending order, circularly and sequentially obtaining a safety check index of the limited component under the estimated service life based on a limited safety check index function according to the arrangement order of the plurality of estimated service lives, comparing the obtained safety check index of the limited component under the estimated service life with a first safety index threshold value, stopping circulation until the obtained safety check index is smaller than the first safety index threshold value, and determining the estimated service life corresponding to the obtained safety check index as the minimum value of the service life of the limited component.
Optionally, the step of obtaining the safety check index of the limited component under the estimated service life based on the limited safety check index function includes: determining the reference load of the limited component based on the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the stress component of the wind turbine generator structure and the estimated service life of the limited component; substituting the estimated service life of the limited component and the determined reference load into the limited safety check index function to obtain a safety check index of the limited component under the estimated service life.
Optionally, the wind turbine structural stress component includes a limited component, and a safety check index function is constructed based on the complete machine design life of the wind turbine under the standard design wind parameter, the fatigue material coefficient of the wind turbine structural stress component, and the service life of the wind turbine structural stress component in the following manner: obtaining a vendor-side safety check indicator function of the limited component under the plurality of estimated service lives from a manufacturer of the limited component; and constructing a safety check index function of the limited part under any estimated service life based on the manufacturer side safety check index function of the limited part under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited part and the service life of the limited part.
Optionally, the constructing a safety check index function of the limited component under any estimated service life based on the manufacturer-side safety check index function of the limited component under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited component, and the service life of the limited component specifically includes: acquiring a manufacturer-side safety check index function of the limited component under any estimated service life and a material coefficient of fatigue of the limited component; determining a reference load of the limited component when any estimated service life is equal to the complete machine design life of the wind turbine generator under standard design wind parameters based on a manufacturer-side safety check index function of the limited component under any estimated service life and a material coefficient of fatigue of the limited component; performing function conversion processing on the reference load of the limited component under any estimated service life based on the reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under standard design wind parameters, and acquiring a new reference load of the limited component under any estimated service life; and substituting the new reference load into a manufacturer-side safety check index function of the limited component under any estimated service life to obtain the safety check index function of the limited component under any estimated service life.
Optionally, the wind turbine structure stressed component includes an unlimited component, and the safety check index function includes an unlimited safety check index function, where the service life of the unlimited component is determined in the following manner: and under the constraint condition that the unlimited safety check index function meets a second safety index threshold, determining the maximum value of the service life of the unlimited component based on the unlimited safety check index function, and determining the determined maximum value as the service life of the unlimited component.
Optionally, the wind turbine structural stressed component comprises a non-limited component, and a safety check index function is constructed based on the complete machine design life of the wind turbine under the standard design wind parameters, the fatigue material coefficient of the wind turbine structural stressed component, and the service life of the wind turbine structural stressed component in the following manner: obtaining a vendor-side security check target function for the non-constrained component from a manufacturer of the non-constrained component; and constructing the safety check index function of the non-limited part based on the manufacturer side safety check index function of the non-limited part, the complete machine design life of the wind turbine generator set under the standard design wind parameters, the fatigue material coefficient of the non-limited part and the service life of the non-limited part.
Optionally, the constructing the safety check index function of the non-limited component based on the manufacturer-side safety check index function of the non-limited component, the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the non-limited component, and the service life of the non-limited component specifically includes: determining a reference load of the non-limited part when the service life of the non-limited part is equal to the service life of the whole wind turbine generator set under standard design wind parameters based on a manufacturer-side safety check index function of the non-limited part and a fatigue material coefficient of the non-limited part; performing function conversion processing on the reference load of the non-limited component under the service life of the non-limited component based on the reference load of the non-limited component when the service life of the non-limited component is equal to the service life of the whole wind turbine generator under standard design wind parameters, and obtaining a new reference load of the non-limited component under the service life of the non-limited component; and substituting the new reference load into a manufacturer-side safety check index function of the non-limited component to obtain the safety check index function of the non-limited component.
Optionally, the reference load comprises at least one of: load sustained distribution, equivalent fatigue loads, and markov matrix loads.
According to another aspect of an exemplary embodiment of the present invention, there is provided an apparatus for determining a service life of a stressed component of a wind turbine structure, the apparatus comprising: the construction unit is used for constructing a safety check index function aiming at the structural stress component of the wind turbine generator; and the service life determining unit is used for determining the service life of the stress part of the wind turbine generator structure based on the constructed safety check index function, wherein the safety check index function is constructed based on the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the stress part of the wind turbine generator structure and the service life of the stress part of the wind turbine generator structure and is used for representing the corresponding relation between the service life of the stress part of the wind turbine generator structure and the safety check index.
Optionally, the wind turbine structural stress component includes a constrained component and an unconstrained component, wherein the apparatus further includes: and the component determining unit is used for determining a component which needs to acquire a manufacturer-side safety check index function corresponding to the estimated service life from a manufacturer of the wind turbine generator structural stressed component as a limited component, and determining a component which does not need to acquire the manufacturer-side safety check index function corresponding to the estimated service life from the manufacturer of the wind turbine generator structural stressed component as an unlimited component.
Optionally, the wind turbine structural stressed component comprises a limited component, and the safety check indicator function comprises a limited safety check indicator function corresponding to each of a plurality of estimated service lives, wherein the service life determining unit determines the service life of the limited component by: the method comprises the steps of arranging a plurality of estimated service lives in a descending order, circularly and sequentially obtaining a safety check index of the limited component under the estimated service life based on a limited safety check index function according to the arrangement order of the plurality of estimated service lives, comparing the obtained safety check index of the limited component under the estimated service life with a first safety index threshold value, stopping circulation until the obtained safety check index is smaller than the first safety index threshold value, and determining the estimated service life corresponding to the obtained safety check index as the minimum value of the service life of the limited component.
Optionally, the service life determining unit determines a reference load of the limited component based on the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the stressed component of the wind turbine generator structure and the estimated service life of the limited component, and substitutes the estimated service life of the limited component and the determined reference load into the limited safety check index function to obtain the safety check index of the limited component under the estimated service life.
Optionally, the construction unit is configured to: acquiring a manufacturer-side safety check index function of the limited component under the plurality of estimated service lives; and constructing a safety check index function of the limited part under any estimated service life based on the manufacturer side safety check index function of the limited part under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited part and the service life of the limited part.
Optionally, the construction unit constructs the safety check index function of the limited component at any estimated service life based on the manufacturer-side safety check index function of the limited component at any estimated service life, the complete machine design life of the wind turbine generator set at standard design wind parameters, the fatigue material coefficient of the limited component, and the service life of the limited component by the following method: acquiring a manufacturer-side safety check index function of the limited component under any estimated service life and a fatigue material coefficient of the limited component; determining a reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under standard design wind parameters based on a manufacturer-side safety check index function of the limited component under any estimated service life and a fatigue material coefficient of the limited component; performing function conversion processing on the reference load of the limited component under any estimated service life based on the reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under standard design wind parameters, and acquiring a new reference load of the limited component under any estimated service life; and substituting the new reference load into a manufacturer-side safety check index function of the limited component under any estimated service life to obtain the safety check index function of the limited component under any estimated service life.
Optionally, the wind turbine component includes an unlimited component, and the safety check index function includes an unlimited safety check index function, wherein the service life determining unit determines the service life of the unlimited component by: and under the constraint condition that the unlimited safety check index function meets a second safety index threshold, determining the maximum value of the service life of the unlimited component based on the unlimited safety check index function, and determining the determined maximum value as the service life of the unlimited component.
Optionally, the constructing unit constructs the unrestricted security check index function based on the complete machine design life of the wind turbine under the standard design wind parameters, the fatigue material coefficient of the stressed component of the wind turbine structure, and the service life of the stressed component of the wind turbine structure in the following manners: obtaining a vendor-side security check target function for the non-constrained component from a manufacturer of the non-constrained component; and constructing the safety check index function of the non-limited part based on the manufacturer side safety check index function of the non-limited part, the complete machine design life of the wind turbine generator set under the standard design wind parameters, the fatigue material coefficient of the non-limited part and the service life of the non-limited part.
Optionally, the constructing unit constructs the safety check index function of the non-limited component based on the manufacturer-side safety check index function of the non-limited component, the overall design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the non-limited component, and the service life of the non-limited component by the following method, specifically including: determining a reference load of the non-limited part when the service life of the non-limited part is equal to the service life of the whole wind turbine generator set under standard design wind parameters based on a manufacturer-side safety check index function of the non-limited part and a fatigue material coefficient of the non-limited part; performing function conversion processing on the reference load of the non-limited component under the service life of the non-limited component based on the reference load of the non-limited component when the service life of the non-limited component is equal to the service life of the whole wind turbine generator under standard design wind parameters, and obtaining a new reference load of the non-limited component under the service life of the non-limited component; and substituting the new reference load into a manufacturer-side safety check index function of the non-limited component to obtain the safety check index function of the non-limited component.
Optionally, the reference load comprises at least one of: load sustained distribution, equivalent fatigue loads, and markov matrix loads.
On the other hand, an embodiment of the present invention further provides an electronic device, where the electronic device includes: a processor, a memory, and a computer program stored on the memory and executable on the processor; and when the processor executes the computer program, the method for determining the service life of the stress component of the wind turbine structure is adopted.
On the other hand, the embodiment of the invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for determining the service life of the stress component of the wind turbine generator structure is implemented.
By utilizing the method and the equipment for determining the service life of the stressed parts of the wind turbine structure, provided by the embodiment of the invention, the accurate and rapid evaluation of the service life of each stressed part of the wind turbine structure in a specific site can be realized, and a favorable foundation is laid for subsequently selecting a proper service life customization scheme (for example, operating according to the most proper age of the operating income of the whole wind turbine structure) and an operation and maintenance strategy (for example, monitoring and replacing different stressed parts of the wind turbine structure before reaching the determined service life) for the whole wind turbine structure, so that the benefit maximization of a wind power plant is ensured.
Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.
Drawings
The above and other objects of exemplary embodiments of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings which illustrate exemplary embodiments, wherein:
FIG. 1 illustrates a flow chart of a method of determining a life span of a stressed component of a wind turbine structure in accordance with an exemplary embodiment of the present invention;
FIG. 2 illustrates a block diagram of an apparatus for determining a useful life of a stressed component of a wind turbine structure, according to an exemplary embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures.
Fig. 1 shows a flow chart of a method for determining the service life of a stressed component of a wind turbine structure, wherein the wind turbine may be located in a specific site, according to an exemplary embodiment of the present invention.
As shown in fig. 1, in step S100, a safety check index function is constructed for the stressed component of the wind turbine generator system, where the safety check index function is constructed based on the design life of the whole wind turbine generator system under the standard design wind parameters, the fatigue material coefficient of the stressed component of the wind turbine generator system, and the service life of the stressed component of the wind turbine generator system, so as to represent the corresponding relationship between the service life of the stressed component of the wind turbine generator system and the safety check index. The safety check index function refers to a function for evaluating the safety performance of the stress component of the wind turbine generator structure by utilizing the service life of the stress component of the wind turbine generator structure.
In an exemplary embodiment of the present invention, the structural stress component of the wind turbine refers to a wind turbine component which may be subjected to fatigue damage and damage due to various mechanical acting forces during the life cycle of the wind farm, for example: large components of the wind turbine such as blades, hubs, nacelles, motors, towers, foundations and the like; the transmission components comprise a main bearing, a yaw bearing, a pitch reducer, a yaw toothed belt and the like; the connecting pieces such as connecting bolts, anchor bolts, foundation rings and flanges in and between the large-part transmission parts comprise the tower and each connecting flange of the foundation, a tower welding seam, a door opening and the like.
In addition, the structural stress components of the wind turbine generator can be divided into two types, namely limited components and non-limited components according to whether a manufacturer-side safety check index function corresponding to the estimated service life exists or not, wherein the limited components and the non-limited components can be determined in the following modes: and determining a part needing to obtain a manufacturer side safety check index function corresponding to the estimated service life from a manufacturer of the wind turbine generator structural stressed part as a limited part, and determining a part not needing to obtain the manufacturer side safety check index function corresponding to the estimated service life from the manufacturer of the wind turbine generator structural stressed part as an unlimited part.
Here, the estimated service life may be a minimum value of the service life of a wind turbine structural stress component (e.g., a limited component) pre-established by a worker of a wind farm at a specific site, i.e., the limited component may be used by at least a plurality of years, e.g., a set of estimated service lives may be rated by the worker for 15 years, 20 years, 25 years, and 30 years, or may be rated by the worker for 15 years, 18 years, 23 years, 25 years, and 30 years. It should be understood that the estimated useful life may be the age of any granularity set by the staff of the wind farm at a particular site, and the invention is not limited in any way herein.
Specifically, the manufacturer-side safety check index function corresponding to the estimated service life can be obtained from the manufacturer of the stressed component of the wind turbine generator system in the following manner: the method comprises the steps of under the empirical conversion (linear conversion) of the corresponding relation between standard design wind parameters and load sizes of the wind turbine generator, estimating the envelope load (equivalent to the reference load in the following) of a structural component of the wind turbine generator under the estimated service life, sending the estimated envelope load and the estimated service life to a manufacturer of the structural stress component of the wind turbine generator, determining manufacturer-side safety check index functions under the estimated envelope load and the estimated service life by the manufacturer of the structural stress component of the wind turbine generator, and returning the manufacturer-side safety check index functions to a wind power plant. In the invention, a part of a manufacturer-side safety check index function corresponding to the estimated service life, which is required to be obtained from a manufacturer of a wind turbine generator structural stress part, is determined as a limited part. And determining a part of a manufacturer-side safety check index function corresponding to the estimated service life, which is not required to be obtained from a manufacturer of the wind turbine generator structural stress part, as an unlimited part.
In the following, how to construct the safety check index function of the stressed component of the wind turbine structure will be described in detail with reference to specific examples.
In an example of the present invention, the wind turbine structural stress component includes a restricted component, and the restricted security check index function may be constructed based on the complete machine design life of the wind turbine under the standard design wind parameters, the fatigue material coefficient of the wind turbine structural stress component, and the service life of the wind turbine structural stress component in the following manner:
first, a vendor-side safety check indicator function for a constrained component over a plurality of predicted service lives is obtained from a manufacturer of the constrained component. As an example, the vendor-side safety check index function for a limited component over a plurality of predicted service lives may be obtained by: under the condition that a plurality of estimated service lives of the limited component are pre-established by staff of a wind power plant, determining a reference load of the limited component under each estimated service life in the plurality of estimated service lives, sending different estimated service lives and reference loads under different estimated service lives to manufacturers of the limited component, establishing manufacturer-side safety check index functions under different estimated service lives by the manufacturers of the limited component based on the different estimated service lives and the reference loads under the different service lives, and then obtaining the established manufacturer-side safety check index functions under the different estimated service lives from the manufacturers. In an example of the present invention, the reference load may include, but is not limited to, at least one of: load sustained distribution, equivalent fatigue loads, and markov matrix loads. Here, the load duration distribution may include, but is not limited to, any one of a time history load and a turn history load experienced by the constrained component,
here, a Markov Matrix Load (Markov Matrix Load) is a Load data statistical Matrix of a rain flow counting method, which represents the number of cycles at a certain Load mean value and at a certain Load amplitude value within an evaluation period.
In addition, the Rain flow counting Method (Rain flow Method) mainly simplifies the time load process into a plurality of load cycles for fatigue life estimation and fatigue test load spectrum compilation. It is based on a two-parameter method, and considers two variables of dynamic strength (amplitude) and static strength (average value).
And then, constructing a safety check index function of the limited part under any estimated service life based on the manufacturer side safety check index function of the limited part under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited part and the service life of the limited part.
As an example, the safety check index function for a constrained component at any estimated service life may be constructed by:
firstly, a manufacturer-side safety check index function of the limited component under any estimated service life and a fatigue material coefficient of the limited component are obtained.
And then, determining the reference load of the limited part when any estimated service life is equal to the complete machine design service life of the wind turbine generator under the standard design wind parameter based on the manufacturer side safety check index function of the limited part under any estimated service life and the fatigue material coefficient of the limited part.
And then, performing function conversion processing on the reference load of the limited component under any estimated service life based on the reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under the standard design wind parameter, and obtaining a new reference load of the limited component under any estimated service life.
For example, any estimated service life is y, the obtained fatigue material coefficient of the limited component is m, and the manufacturer-side safety check index function obtained from the manufacturer of the limited component at any estimated service life y is S (T (y, m), y), where T (y, m) is the reference load of the limited component at the estimated service life of y and the fatigue material coefficient of the limited component of m.
The following description will take the reference load T (y, m) as an equivalent fatigue load as an example, and how to perform function conversion processing on the reference load of the limited component in any estimated service life based on the reference load when any estimated service life of the limited component is equal to the complete machine design service life of the wind turbine generator under the standard design wind parameters.
Specifically, by assuming an accumulation formula of fatigue rain during infinite circulation, an equivalent fatigue load formula of the wind turbine generator can be obtained as
Where m represents the Wohler (stress-life) index of the fatigue load stress-cycle number curve (i.e., the fatigue material coefficient of the constrained component), fiDenotes the range of the i-th cyclic load, piAnd the occurrence frequency ratio of the range value of the ith cyclic load is expressed, and is more than or equal to 1 and less than or equal to i.
In that
niRepresenting the number of cycles of the ith cyclic load in the range of one year, and N representing the infinite loop number of the fatigue load stress-cycle number curve, the constrained component has any estimated service lifeReference load at life
Any estimated service life y of the limited part is equal to the complete machine design service life y of the wind turbine generator under the standard design wind parameter0Reference load of time
Dividing two sides of the equation of the formula (1) by two sides of the equation of the formula (2) respectively to obtain a new load reference when the reference load T (y, m) obtained after the function conversion processing is the equivalent fatigue load:
in a similar way, a new reference load when the reference load T (y, m) is any one of the markov matrix, the time history load and the turn history load can also be obtained.
And finally, after obtaining the new reference load, substituting the new reference load into the manufacturer-side safety check index function of the limited component under any estimated service life, and obtaining the safety check index function of the limited component under any estimated service life.
For example, following the above example, substituting equation (3) into the manufacturer-side safety check indicator function S (T (y, m), y) of the constrained component at any one of the estimated service lives y can result in the safety check indicator function S (T ((y, m), y) of the constrained component at any one of the estimated service lives y0,y,m),y)。
By the method, the service life of the whole wind turbine generator under the standard design wind parameter can be introduced into the manufacturer-side safety check index function of the limited part under any estimated service life, so that the safety check index function of the limited part under any estimated service life, which is related to the service life of the whole wind turbine generator under the standard design wind parameter, any estimated service life and the fatigue material coefficient, can be obtained.
In another example of the present invention, the wind turbine structural stress component includes a non-constrained component, and the constrained safety check index function may be constructed based on the complete machine design life of the wind turbine under the standard design wind parameters, the fatigue material coefficient of the wind turbine structural stress component, and the service life of the wind turbine structural stress component in the following manner:
first, a vendor-side security check target function for an unrestricted component is obtained from a manufacturer of the unrestricted component. Here, the vendor-side security check index function for an unrestricted component may be obtained from the manufacturer of the unrestricted component.
And then, constructing a safety check index function of the non-limited part based on a manufacturer side safety check index function of the non-limited part, the complete machine design life of the wind turbine generator under standard design wind parameters, the fatigue material coefficient of the non-limited part and the service life of the non-limited part.
As an example, the method for constructing the safety check index function of the non-limited component based on the manufacturer-side safety check index function of the non-limited component, the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the non-limited component, and the service life of the non-limited component specifically includes:
firstly, based on a manufacturer-side safety check index function of the non-limited part and a fatigue material coefficient of the non-limited part, determining a reference load of the non-limited part when the service life of the non-limited part is equal to the service life of the whole wind turbine generator under standard design wind parameters.
And then, performing function conversion processing on the reference load of the non-limited component under the service life of the non-limited component based on the reference load of the non-limited component when the service life of the non-limited component is equal to the service life of the whole wind turbine generator under the standard design wind parameters, and obtaining a new reference load of the non-limited component under the service life of the non-limited component. Since the function conversion processing of the reference load of the non-limited component in the service life of the non-limited component based on the reference load of the non-limited component in the service life equal to the service life of the complete machine of the wind turbine generator set under the standard design wind parameters is the same as the method of the function conversion processing described above for the limited component, the description thereof will be omitted.
And finally, substituting the new reference load into the manufacturer-side safety check index function of the non-limited component to obtain the safety check index function of the non-limited component. For example, the service life of the unconstrained component is y1The obtained fatigue material coefficient of the unconstrained component is m1The vendor-side safety check index function for an unconstrained component obtained from a manufacturer of the unconstrained component may be expressed as S1(T(y1,m1),y1) Wherein, T (y)1,m1) In service life of y1Fatigue coefficient of material of unconstrained part is m1The reference load of the unconstrained component. The design life of the whole wind turbine generator set under the standard design wind parameter is y0The security check index function of the obtained non-limited component can be expressed as S1(T((y0,y1,m),y1)。
With continued reference to fig. 1, in step S200, the service life of the stressed component of the wind turbine structure is determined based on the constructed safety check index function.
In one example, when the wind turbine structure stress component includes a restricted component, the safety check indicator function constructed as described above may include a restricted safety check indicator function corresponding to each of a plurality of predicted service lives.
Specifically, the service life of the constrained component may be determined by:
firstly, a plurality of estimated service lives are arranged in a descending order.
And then, according to the arrangement sequence of the estimated service lives, circularly and sequentially obtaining the safety check index of the limited part under the estimated service life based on the limited safety check index function, comparing the obtained safety check index of the limited part under the estimated service life with a first safety index threshold value, and stopping circulation until the obtained safety check index is smaller than the first safety index threshold value. Here, the first safety index threshold may be a predetermined constant. For example, the first safety metric threshold may be a constant that is set in advance empirically, but is not limited thereto.
And finally, determining the estimated service life corresponding to the obtained safety check index as the minimum value of the service life of the limited part.
Here, regarding the step of obtaining the safety check index of the limited component under the estimated service life based on the limited safety check index function, in one example, the reference load of the limited component may be determined based on the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited component, and the estimated service life of the limited component and the determined reference load may be substituted into the limited safety check index function to obtain the safety check index of the limited component under the estimated service life.
How to determine the useful life of a constrained component will be described in detail below with reference to examples: assuming that a group of estimated service lives set by a worker of a wind power plant are respectively 15 years, 20 years, 25 years and 30 years, the design service life of the whole wind turbine generator under standard design wind parameters is 20 years, the fatigue material coefficient m of a limited part is 4 corresponding to steel, the first safety index threshold value is 75, and each estimated service life is respectively corresponding to different safety check index functions.
Specifically, the estimated lifetime of the group is ranked in descending order of 30 years, 25 years, 20 years and 15 years. Then, y is changed to 30 in the order of the arrangement results0Substituting 20 and m-4 into the safety check index function with the estimated service life of 30 years to obtain the safety check index s with the estimated service life of 30 years30Then s is30Compare with the first safety index threshold 75, if s30If the value is less than the first safety index threshold value 75, y is 30 as the minimum value of the safety check index of the limited component under the condition that the estimated service life is 30 years, in other words, the limited component can be used for at least 30 years. If s is30Not less than the first safety index threshold 75, the estimated service life y after the estimated service life of 30 years is 25,y0Substituting 20 and m-4 into the safety check index function with the estimated service life of 25 years to obtain the safety check index s with the estimated service life of 25 years25Then s is25Compare with the first safety index threshold 75, if s25If the value is less than the first safety index threshold value 75, y is 25 as the minimum value of the safety check index of the limited component under the estimated service life of 25 years, in other words, the limited component can be used for at least 25 years. If s is25If the safety index is not less than the first safety index threshold value 75, the method is circulated until the obtained safety check index is less than the first safety index threshold value. In this way, the service life of the limited component can be estimated quickly and accurately.
In another example, the wind turbine structure stress component includes an unlimited component, and the safety check index function constructed above may include an unlimited safety check index function, wherein the service life of the unlimited component is determined by: and under the constraint condition that the unrestricted security check index function meets the second security index threshold, determining the maximum value of the service life of the unrestricted component based on the unrestricted security check index function, and determining the determined maximum value as the service life of the unrestricted component. Here, the second safety index threshold is a predetermined constant. For example, the second safety metric threshold may be a constant that is set in advance empirically, but is not limited thereto.
For example, assume that the safety check index function of the unrestricted component is S (T ((y)0,y1,m),y1) The threshold value of the second safety index is 100, the constraint condition of the second safety index is less than 100, y020 and m1Substituting S (T ((y)) for 40,y1,m1),y1) Less than or equal to 100, due to y0And m1Are all known quantities, so solving the inequality can yield y1Maximum value of (a) y1Is determined as the service life of the non-limiting component.
According to the method for determining the service life of the stressed component of the wind turbine structure, accurate and rapid assessment of the service life of each component of the wind turbine at a specific site can be achieved, a favorable foundation is laid for subsequently selecting a proper life customization scheme (for example, running according to the most proper age of the running income of the whole wind turbine) and an operation and maintenance strategy (for example, monitoring and replacing different stressed components of the wind turbine structure before the determined service life is reached), and accordingly benefit maximization of a wind power plant is guaranteed.
Based on the same inventive concept as the method for determining the service life of the stressed component of the wind turbine generator structure shown in fig. 1, an embodiment of the present invention further provides an apparatus for determining the service life of the stressed component of the wind turbine generator structure, such as the following embodiments. Because the principle of the device for solving the problems is similar to the method shown in fig. 1, the implementation of the device can refer to the implementation of the method for determining the service life of the stressed part of the wind turbine generator structure shown in fig. 1, and repeated parts are not described again.
Fig. 2 shows a block diagram of an apparatus for determining a service life of a stressed component of a wind turbine structure, wherein the wind turbine may be located in a specific site, according to an exemplary embodiment of the present invention.
As shown in fig. 2, the apparatus for determining the service life of a stressed component of a wind turbine structure according to an exemplary embodiment of the present invention includes: a building unit 100 and a service life determination unit 200.
The construction unit 100 constructs a safety check index function for the structural stressed part of the wind turbine generator, wherein the safety check index function is constructed based on the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the structural stressed part of the wind turbine generator and the service life of the structural stressed part of the wind turbine generator, and is used for representing the corresponding relation between the service life of the structural stressed part of the wind turbine generator and the safety check index.
In an exemplary embodiment of the invention, the wind turbine structure force-bearing component may include a constrained component and an unconstrained component. Specifically, the apparatus may further additionally include a component determination unit (not shown in fig. 2), wherein the component determination unit determines, as a limited component, a component that requires a vendor-side safety check indicator function corresponding to the estimated service life from a manufacturer of the stressed wind turbine generator structure component, and determines, as an unlimited component, a component that does not require a vendor-side safety check indicator function corresponding to the estimated service life from a manufacturer of the stressed wind turbine generator structure component.
In an example of the present invention, the wind turbine structural stress component includes a limited component, and the building unit 100 is specifically configured to: acquiring a manufacturer-side safety check index function of the limited component under a plurality of estimated service lives from a manufacturer of the limited component; and constructing the safety check index function of the limited part under any estimated service life based on the manufacturer side safety check index function of the limited part under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the limited part and the service life of the limited part.
As an example, the building unit 100 may specifically be configured to:
and acquiring a manufacturer-side safety check index function of the limited component and a fatigue material coefficient of the limited component under any estimated service life.
Determining a reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under the standard design wind parameter based on the manufacturer side safety check index function of the limited component under any estimated service life and the fatigue material coefficient of the limited component;
performing function conversion processing on the reference load of the limited component under any estimated service life based on the reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under the standard design wind parameter, and obtaining a new reference load of the limited component under any estimated service life;
and substituting the new reference load into the manufacturer-side safety check index function of the limited component under any estimated service life to obtain the safety check index function of the limited component under any estimated service life.
By the method, the service life of the whole wind turbine generator under the standard design wind parameter can be introduced into the manufacturer-side safety check index function of the limited part under any estimated service life, so that the safety check index function of the limited part under any estimated service life, which is related to the service life of the whole wind turbine generator under the standard design wind parameter, any estimated service life and the fatigue material coefficient, can be obtained.
In another example of the present invention, when the wind turbine structure force-bearing component comprises an unconstrained component, the building unit 100 may be configured to: obtaining a manufacturer-side safety check index function of the non-limited component from a manufacturer of the non-limited component; the safety check index function of the non-limited part is constructed based on the manufacturer side safety check index function of the non-limited part, the whole machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the non-limited part and the service life of the non-limited part.
As an example, the building unit 100 may be used to:
determining a reference load of the non-limited part when the service life of the non-limited part is equal to the service life of the whole wind turbine generator under standard design wind parameters based on a manufacturer side safety check index function of the non-limited part and a fatigue material coefficient of the non-limited part;
performing function conversion processing on the reference load of the non-limited component under the service life of the non-limited component based on the reference load of the non-limited component when the service life of the non-limited component is equal to the service life of the whole wind turbine generator under the standard design wind parameters, and obtaining a new reference load of the non-limited component under the service life of the non-limited component;
and substituting the new reference load into the manufacturer-side safety check index function of the non-limited component to obtain the safety check index function of the non-limited component.
The service life determining unit 200 determines the service life of the stressed component of the wind turbine structure based on the constructed safety check index function.
In one example, where the wind turbine structural stress component comprises a constrained component, the safety check indicator function constructed as described above may comprise a constrained safety check indicator function corresponding to each of a plurality of predicted useful lives.
Specifically, the service life determination unit 200 may determine the service life of the limited component by:
firstly, a plurality of estimated service lives are arranged in a descending order.
Then, according to the arrangement sequence of the estimated service lives, circularly and sequentially obtaining the safety check index of the limited part under the estimated service life based on the limited safety check index function, comparing the obtained safety check index of the limited part under the estimated service life with a first safety index threshold value, stopping circulation until the obtained safety check index is smaller than the first safety index threshold value,
and finally, determining the estimated service life corresponding to the obtained safety check index as the minimum value of the service life of the limited part.
As an example, the service life determining unit 200 determines a reference load of the limited component based on the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the limited component, and the estimated service life of the limited component, substitutes the estimated service life of the limited component and the determined reference load into the limited safety check index function, and obtains a safety check index of the limited component under the estimated service life. As an example, the reference load may include, but is not limited to, at least one of: load sustained distribution, equivalent fatigue loads, and markov matrix loads. Here, the load duration distribution may again include, but is not limited to, any of the time history load and the turn history load experienced by the constrained component.
In another example, when the stressed component of the wind turbine structure includes an unlimited component, the safety check index function constructed above may include an unlimited safety check index function, wherein the service life determination unit 200 determines the service life of the unlimited component by: and under the constraint condition that the unrestricted security check index function meets the second security index threshold, determining the maximum value of the service life of the unrestricted component based on the unrestricted security check index function, and determining the determined maximum value as the service life of the unrestricted component. Here, the second safety index threshold is a predetermined constant.
It should be understood that the specific implementation manner of the apparatus for determining the service life of the stressed component of the wind turbine generator system structure according to the exemplary embodiment of the present invention may be implemented with reference to the related specific implementation manner described in conjunction with fig. 1, and will not be described herein again.
Furthermore, it should be understood that the various units in the apparatus for determining the service life of a stressed component of a wind turbine structure according to an exemplary embodiment of the present invention may be implemented as hardware components and/or software components. The individual units may be implemented, for example, using Field Programmable Gate Arrays (FPGAs) or Application Specific Integrated Circuits (ASICs), depending on the processing performed by the individual units as defined by the skilled person.
An electronic device according to another exemplary embodiment of the present invention includes: a processor (not shown) and a memory (not shown) and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements the method of determining the service life of the stressed component of the wind turbine structure as in the above exemplary embodiments.
According to an exemplary embodiment of the present invention, a computer readable storage medium stores a computer program which, when executed by a processor, causes the processor to execute the method for determining the service life of a stressed component of a wind turbine structure of the above-mentioned exemplary embodiment. The computer readable storage medium is any data storage device that can store data which can be read by a computer system. Examples of computer-readable storage media include: read-only memory, random access memory, read-only optical disks, magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission through the internet via wired or wireless transmission paths).
By using the method and the device for determining the service life of the structural stressed components of the wind turbine generator according to the exemplary embodiment of the invention, the service life of each structural stressed component of the wind turbine generator at a specific site can be accurately and quickly evaluated, and a favorable foundation is laid for subsequently selecting a proper life customization scheme (for example, operating according to the most proper operating age of the complete machine of the wind turbine generator) and an operation and maintenance strategy (for example, monitoring and replacing different structural stressed components of the wind turbine generator before reaching the determined service life) for the complete machine of the wind turbine generator, so that the benefit maximization of the wind turbine generator is ensured.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (19)
1. A method for determining the service life of a stressed component of a wind turbine structure, the method comprising:
constructing a safety check index function aiming at a structural stress component of the wind turbine generator;
determining the service life of the stress part of the wind turbine structure based on the constructed safety check index function,
the safety check index function is constructed based on the complete machine design life of the wind turbine generator under standard design wind parameters, the fatigue material coefficient of the stress part of the wind turbine generator structure and the service life of the stress part of the wind turbine generator structure, and is used for representing the corresponding relation between the service life of the stress part of the wind turbine generator structure and the safety check index.
2. The method of claim 1, wherein the wind turbine structure force-bearing components include constrained components and unconstrained components,
wherein the constrained component and the unconstrained component are determined by:
determining a part of a manufacturer side safety check index function corresponding to the estimated service life, which is required to be obtained from a manufacturer of the wind turbine structure stress part, as a limited part,
and determining a part of a manufacturer-side safety check index function corresponding to the estimated service life, which is not required to be obtained from a manufacturer of the wind turbine generator structural stress part, as an unlimited part.
3. The method of claim 2, wherein the wind turbine structural stress component comprises a constrained component, the safety check target function comprises a constrained safety check target function corresponding to each of a plurality of estimated service lives,
wherein the service life of the constrained component is determined by:
arranging the plurality of estimated service lives in a descending order,
according to the arrangement sequence of the estimated service lives, circularly and sequentially obtaining the safety check index of the limited part under the estimated service life based on the limited safety check index function, comparing the obtained safety check index of the limited part under the estimated service life with a first safety index threshold value, and stopping circulation until the obtained safety check index is smaller than the first safety index threshold value,
and determining the estimated service life corresponding to the obtained safety check index as the minimum value of the service life of the limited component.
4. The method of claim 3, wherein obtaining a safety check indicator for the constrained component at the estimated service life based on the constrained safety check indicator function comprises:
determining the reference load of the limited component based on the complete machine design life of the wind turbine generator under the standard design wind parameters, the fatigue material coefficient of the stress component of the wind turbine generator structure and the estimated service life of the limited component;
substituting the estimated service life of the limited component and the determined reference load into the limited safety check index function to obtain a safety check index of the limited component under the estimated service life.
5. The method of claim 1, wherein the wind turbine structural stress member comprises a constrained member, and the safety check indicator function is constructed based on a total machine design life of the wind turbine under standard design wind parameters, a fatigue material coefficient of the wind turbine structural stress member, and a service life of the wind turbine structural stress member by:
obtaining a vendor-side safety check indicator function of the limited component under the plurality of estimated service lives from a manufacturer of the limited component;
and constructing a safety check index function of the limited part under any estimated service life based on the manufacturer side safety check index function of the limited part under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited part and the service life of the limited part.
6. The method according to claim 5, wherein the constructing the safety check index function of the limited component at any estimated service life based on the manufacturer-side safety check index function of the limited component at any estimated service life, the overall design life of the wind turbine generator set at standard design wind parameters, the fatigue material coefficient of the limited component, and the service life of the limited component specifically comprises:
acquiring a manufacturer-side safety check index function of the limited component under any estimated service life and a material coefficient of fatigue of the limited component;
determining a reference load of the limited component when any estimated service life is equal to the complete machine design life of the wind turbine generator under standard design wind parameters based on a manufacturer-side safety check index function of the limited component under any estimated service life and a material coefficient of fatigue of the limited component;
performing function conversion processing on the reference load of the limited component under any estimated service life based on the reference load of the limited component when any estimated service life is equal to the complete machine design service life of the wind turbine generator under standard design wind parameters, and acquiring a new reference load of the limited component under any estimated service life;
and substituting the new reference load into a manufacturer-side safety check index function of the limited component under any estimated service life to obtain the safety check index function of the limited component under any estimated service life.
7. The method of claim 2, wherein the wind turbine structure force-bearing component comprises an unrestricted component, the safety check target function comprises an unrestricted safety check target function,
wherein the service life of the non-constrained component is determined by:
and under the constraint condition that the unlimited safety check index function meets a second safety index threshold, determining the maximum value of the service life of the unlimited component based on the unlimited safety check index function, and determining the determined maximum value as the service life of the unlimited component.
8. The method of claim 1, wherein the wind turbine structural stress component comprises an unconstrained component, and the safety check index function is constructed based on a complete machine design life of the wind turbine under standard design wind parameters, a fatigue material coefficient of the wind turbine structural stress component, and a service life of the wind turbine structural stress component by:
obtaining a vendor-side security check target function for the non-constrained component from a manufacturer of the non-constrained component;
and constructing the safety check index function of the non-limited part based on the manufacturer side safety check index function of the non-limited part, the complete machine design life of the wind turbine generator set under the standard design wind parameters, the fatigue material coefficient of the non-limited part and the service life of the non-limited part.
9. The method of claim 8, wherein the constructing the safety check index function of the non-limited component based on the manufacturer-side safety check index function of the non-limited component, the overall design life of the wind turbine generator under standard design wind parameters, the fatigue material coefficient of the non-limited component, and the service life of the non-limited component specifically comprises:
determining a reference load of the non-limited part when the service life of the non-limited part is equal to the service life of the whole wind turbine generator set under standard design wind parameters based on a manufacturer-side safety check index function of the non-limited part and a fatigue material coefficient of the non-limited part;
performing function conversion processing on the reference load of the non-limited component under the service life of the non-limited component based on the reference load of the non-limited component when the service life of the non-limited component is equal to the service life of the whole wind turbine generator under standard design wind parameters, and obtaining a new reference load of the non-limited component under the service life of the non-limited component;
and substituting the new reference load into a manufacturer-side safety check index function of the non-limited component to obtain the safety check index function of the non-limited component.
10. The method of claim 4, wherein the reference load comprises at least one of: load sustained distribution, equivalent fatigue loads, and markov matrix loads.
11. An apparatus for determining the service life of a stressed component of a wind turbine structure, the apparatus comprising:
the construction unit is used for constructing a safety check index function aiming at the structural stress component of the wind turbine generator;
a service life determining unit for determining the service life of the stress component of the wind turbine structure based on the constructed safety check index function,
the safety check index function is constructed based on the complete machine design life of the wind turbine generator under standard design wind parameters, the fatigue material coefficient of the stress part of the wind turbine generator structure and the service life of the stress part of the wind turbine generator structure, and is used for representing the corresponding relation between the service life of the stress part of the wind turbine generator structure and the safety check index.
12. The apparatus of claim 11, wherein the wind turbine structure force-bearing components comprise constrained components and unconstrained components, wherein the apparatus further comprises:
and the component determining unit is used for determining a component which needs to acquire a manufacturer-side safety check index function corresponding to the estimated service life from a manufacturer of the wind turbine generator structural stressed component as a limited component, and determining a component which does not need to acquire the manufacturer-side safety check index function corresponding to the estimated service life from the manufacturer of the wind turbine generator structural stressed component as an unlimited component.
13. The apparatus of claim 12, wherein the wind turbine structural stress component comprises a constrained component, the safety check indicator function comprises a constrained safety check indicator function corresponding to each of a plurality of predicted useful lives,
wherein the service life determination unit determines the service life of the restricted component by:
arranging the plurality of estimated service lives in a descending order,
according to the arrangement sequence of the estimated service lives, circularly and sequentially obtaining the safety check index of the limited part under the estimated service life based on the limited safety check index function, comparing the obtained safety check index of the limited part under the estimated service life with a first safety index threshold value, and stopping circulation until the obtained safety check index is smaller than the first safety index threshold value,
and determining the estimated service life corresponding to the obtained safety check index as the minimum value of the service life of the limited component.
14. The apparatus according to claim 13, wherein the service life determining unit determines the reference load of the limited component based on the overall design life of the wind turbine under standard design wind parameters, the fatigue material coefficient of the stressed component of the wind turbine structure, and the estimated service life of the limited component, and substitutes the estimated service life of the limited component and the determined reference load into the limited safety check index function to obtain the safety check index of the limited component under the estimated service life.
15. The apparatus of claim 14, wherein the construction unit is to:
acquiring a manufacturer-side safety check index function of the limited component under the plurality of estimated service lives;
and constructing a safety check index function of the limited part under any estimated service life based on the manufacturer side safety check index function of the limited part under any estimated service life, the complete machine design life of the wind turbine generator under the standard design wind parameter, the fatigue material coefficient of the limited part and the service life of the limited part.
16. The apparatus of claim 12, wherein the wind turbine structure force-bearing component comprises an unrestricted component, the safety check target function comprises an unrestricted safety check target function,
wherein the service life determination unit determines the service life of the unlimited component by:
and under the constraint condition that the unlimited safety check index function meets a second safety index threshold, determining the maximum value of the service life of the unlimited component based on the unlimited safety check index function, and determining the determined maximum value as the service life of the unlimited component.
17. The apparatus of claim 11, wherein the construction unit constructs the unrestricted security check index function based on a total design life of the wind turbine under standard design wind parameters, a fatigue material coefficient of a stressed component of the wind turbine structure, and a service life of the stressed component of the wind turbine structure by:
obtaining a vendor-side security check target function for the non-constrained component from a manufacturer of the non-constrained component;
and constructing the safety check index function of the non-limited part based on the manufacturer side safety check index function of the non-limited part, the complete machine design life of the wind turbine generator set under the standard design wind parameters, the fatigue material coefficient of the non-limited part and the service life of the non-limited part.
18. An electronic device, characterized in that the electronic device comprises: a processor, a memory, and a computer program stored on the memory and executable on the processor;
the processor, when executing the computer program, implements the method of determining a lifetime of a stressed component of a wind turbine structure according to any of claims 1 to 10.
19. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out a method of determining a service life of a stressed component of a wind turbine generator system structure according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010238423.2A CN113468712B (en) | 2020-03-30 | 2020-03-30 | Method and equipment for determining service life of stressed component of wind turbine generator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010238423.2A CN113468712B (en) | 2020-03-30 | 2020-03-30 | Method and equipment for determining service life of stressed component of wind turbine generator structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113468712A true CN113468712A (en) | 2021-10-01 |
| CN113468712B CN113468712B (en) | 2024-01-30 |
Family
ID=77865041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010238423.2A Active CN113468712B (en) | 2020-03-30 | 2020-03-30 | Method and equipment for determining service life of stressed component of wind turbine generator structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113468712B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104408253A (en) * | 2014-11-26 | 2015-03-11 | 沈阳华创风能有限公司 | Calculating method for fatigue life checking of fan welding parts |
| CN105701337A (en) * | 2015-12-31 | 2016-06-22 | 北京金风科创风电设备有限公司 | Fatigue life prediction method and device for wind turbine generator |
| US20170328346A1 (en) * | 2014-11-24 | 2017-11-16 | Vestas Wind Systems A/S | Determination of wind turbine configuration |
| EP3317523A1 (en) * | 2015-06-30 | 2018-05-09 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| CN109446547A (en) * | 2018-09-10 | 2019-03-08 | 许继集团有限公司 | A kind of strength calculation method of wind generating set pitch control cabinet mounting bracket |
| WO2020039072A1 (en) * | 2018-08-23 | 2020-02-27 | Siemens Aktiengesellschaft | System, device and method of estimating fatigue life of technical systems |
-
2020
- 2020-03-30 CN CN202010238423.2A patent/CN113468712B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170328346A1 (en) * | 2014-11-24 | 2017-11-16 | Vestas Wind Systems A/S | Determination of wind turbine configuration |
| CN104408253A (en) * | 2014-11-26 | 2015-03-11 | 沈阳华创风能有限公司 | Calculating method for fatigue life checking of fan welding parts |
| EP3317523A1 (en) * | 2015-06-30 | 2018-05-09 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| CN105701337A (en) * | 2015-12-31 | 2016-06-22 | 北京金风科创风电设备有限公司 | Fatigue life prediction method and device for wind turbine generator |
| WO2020039072A1 (en) * | 2018-08-23 | 2020-02-27 | Siemens Aktiengesellschaft | System, device and method of estimating fatigue life of technical systems |
| CN109446547A (en) * | 2018-09-10 | 2019-03-08 | 许继集团有限公司 | A kind of strength calculation method of wind generating set pitch control cabinet mounting bracket |
Non-Patent Citations (1)
| Title |
|---|
| 杜静;黄文;王磊;陈真;周宏丽;: "基于接触分析的高强度螺栓疲劳寿命分析", 现代科学仪器, no. 01 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113468712B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Alhmoud et al. | A review of the state-of-the-art in wind-energy reliability analysis | |
| CN110442833B (en) | Wind turbine health state assessment method based on multi-dimensional SCADA data | |
| US7684936B2 (en) | Method, apparatus and computer program product for determining a future time of a component | |
| JP5244502B2 (en) | Wind turbine operation restriction adjusting apparatus and method, and program | |
| JP5844978B2 (en) | System and method for monitoring a gas turbine | |
| US20210288493A1 (en) | Optimization of power generation from power sources using fault prediction based on intelligently tuned machine learning power management | |
| EP2743500A1 (en) | Device and method for fatigue monitoring, system for managing a fatigue life distribution, method of operating a plurality of wind turbines | |
| Hu et al. | Using domain knowledge features for wind turbine diagnostics | |
| Smarsly et al. | An integrated monitoring system for life-cycle management of wind turbines | |
| US20210224755A1 (en) | Decision method of condition-based maintenance to power grid risk | |
| JP6315836B2 (en) | Windmill monitoring device, windmill monitoring method, and windmill monitoring program | |
| CN113374652A (en) | Method for evaluating service life of wind generating set | |
| JP7001462B2 (en) | Seismic evaluation method and equipment for equipment | |
| CN113468712B (en) | Method and equipment for determining service life of stressed component of wind turbine generator structure | |
| CN108074045B (en) | Wind turbine generator complete machine vulnerability analysis and fault sequencing method and electronic terminal | |
| CN109932901A (en) | A kind of two stages robust Unit Combination method counted and failure constrains | |
| JP4034195B2 (en) | Plant operating method and operating apparatus thereof | |
| CN113221324B (en) | Life cycle prediction method and life cycle prediction system for parking lot equipment | |
| Townson et al. | Optimization of dragline load | |
| CN112364517B (en) | Method for evaluating service life of cylinder cover under low cycle fatigue and related equipment | |
| Zhang et al. | Probability warning for wind turbine gearbox incipient faults based on SCADA data | |
| Nielsen et al. | Quantifying the value of SHM for wind turbine blades | |
| US20110213568A1 (en) | Methods and systems for assessing generator rotors | |
| US20240035445A1 (en) | Systems and methods for estimating future risk of failure of a wind turbine component using machine learning | |
| Jorgensen et al. | Probabilistic assessment of the effect of bolt pre-load loss over time in offshore wind turbine bolted ring-flanges using a gaussian process surrogate model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 830026 No. 107, Shanghai Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region Applicant after: Jinfeng Technology Co.,Ltd. Address before: 830026 No. 107, Shanghai Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region Applicant before: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |