LU504714B1 - Evaluation Method and Device for Performance of Wind Turbine Generator System - Google Patents
Evaluation Method and Device for Performance of Wind Turbine Generator System Download PDFInfo
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Abstract
The invention discloses an evaluation method and device for performance of wind turbine generator system, wherein the evaluation method and device for performance of wind turbine generator system comprises the following steps: acquiring operation data of the wind turbine generator system within a period of time; calculating the operation data to obtain a power curve of the wind turbine generator system; synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and evaluating the performance of the wind turbine generator system according to the comprehensive performance index. According to the invention, the performance index of each power generation section is calculated according to the key wind speed points on the basis of the power curve, so that the accuracy of performance evaluation of the wind turbine generator system is ensured.
Description
Evaluation Method and Device for Performance of Wind Turbine *-5%/14
Generator System
The invention relates to the technical field of wind turbine generator system, in particular to an evaluation method and device for performance of wind turbine generator system.
Background technology
Wind energy, a kind of clean and pollution-free renewable energy, has been used by people for a long time, mainly through windmills to pump water and grind flours. People are interested in how to use wind to generate power. Wind power generation, as the most mature renewable energy power generation technology except hydropower generation technology, has been widely used. The performance evaluation of wind turbine generator system is a process of evaluating and analyzing the operating state and power generation performance of wind turbine generator system. The evaluation results can help operators understand the operating state of wind turbine generator system, find and solve problems in time, so as to improve the power generation efficiency and operation reliability of wind power plants.
The existing evaluation method for performance of wind turbine generator system is to observe the performance of each wind turbine in wind turbine generator system through the power curve. The method directly observes the performance of the wind turbine generator system through the power curve, but the power curve is plotted under certain meteorological conditions without considering the influence of the actual wind speed change on the performance of the wind turbine generator system, so that it cannot fully reflect the actual performance of the wind turbine generator system, and has limited evaluation accuracy.
The application aims to solve the technical problems in view of the shortcomings in the prior art, and thus provides an evaluation method for performance of wind turbine generator system, wherein the evaluation method for performance of wind turbine generator system comprises the following steps: acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density; calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections;
determining the performance index of each power generation section and synthesizing th&/504714 performance indexes of all power generation sections to determine the comprehensive performance index; and evaluating the performance of the wind turbine generator system according to the comprehensive performance index.
Further, before “acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density”, the following shall be carried out: acquiring the rated wind speed of the wind turbine generator system.
Further, “extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections” comprises the following: extracting key wind speed points from the power curve, wherein the key wind speed points comprise a start-up wind speed point, a rated wind speed point and a cut-out wind speed point; and dividing the power generation into low wind speed power generation section, conventional power generation section, over-power power generation section and cut-out wind speed power generation section according to the start-up wind speed point, rated wind speed point and cut-out wind speed point.
Further, “determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index” comprises the following: determining the performance index of each power generation section by a preset calculation method; and weighting the performance index of each power generation section according to the preset weight ratio, so as to obtain the comprehensive performance index by the preset calculation method.
Further, “determining the performance index of each power generation section by a preset calculation method” specifically comprises the following: calculating the duration and generating capacity of the low wind speed power generation section, the conventional power generation section, the over-power power generation section and the cut-out wind speed power generation section respectively; and calculating the performance index of each power generation section by
W=(T-To)/T+(D-Do)/D, where, W is the performance index, T is the duration of each power generation section, To is the preset duration of each power generation section, D is the generating capacity of each power generation section, and Do is the preset generating capacity of each power generation section. LUS04714
Further, “weighting the performance index of each power generation section according to the preset weight ratio, so as to obtain the comprehensive performance index by the preset calculation method” specifically comprises the following: setting the weight ratio of low wind speed power generation section as S1, conventional power generation section as S2, over-power power generation section as S3, and cut-out wind speed power generation section as S4, with S1+S2+S3+S4=100%; and calculating the comprehensive performance index of all sections by
C=W1*S1+W2*S2+W3*S3+W4#S4, where, C is the comprehensive performance index, W1 is the performance index of low wind speed power generation section, W2 is the performance index of conventional power generation section, W3 is the performance index of over-power power generation section, and W4 is the performance index of cut-out wind power generation section.
Further, “acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density” comprises the following: the real-time wind speed and the real-time air density are obtained at the same time, and the obtained real-time wind speed and real-time air density are relative to each other.
The invention provides an evaluation device for performance of wind turbine generator system, wherein the evaluation device for performance of wind turbine generator system comprises the following: an acquisition module, which is used for acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density; a calculation module, which is used for calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections; a determination module, which is used for determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and an evaluation module, which is used for evaluating the performance of the wind turbine generator system according to the comprehensive performance index.
Further, the acquisition module is also used for acquiring the rated wind speed of the wind turbine generator system.
Compared with the prior art, the evaluation method and device for performance of wind turbine generator system have the following beneficial effects. LUS04714
According to the invention, the power curve is calculated and plotted according to the real-time wind speed and the real-time air density, so that the obtained power curve is more accurate; the performance index of each power generation section is calculated according to the key wind speed points on the basis of the power curve, and then the comprehensive performance index is determined to evaluate the performance of the wind turbine generator system, so that the accuracy of performance evaluation of the wind turbine generator system is ensured.
FIG.1 is a general flow diagram for the evaluation device for performance of wind turbine generator system in the example of the invention;
FIG.2 is a sub-flow diagram for the evaluation device for performance of wind turbine generator system in the example of the invention;
FIG.3 is a sub-flow diagram for the evaluation device for performance of wind turbine generator system in the example of the invention;
FIG.4 is a sub-flow diagram for the evaluation device for performance of wind turbine generator system in the example of the invention; and
FIG.5 is a schematic composition diagram for the evaluation device for performance of wind turbine generator system in the example of the invention.
The specific embodiment of the invention will be described in further detail below with reference to the attached drawings and example. The following example is used to illustrate the invention, but is not used to limit the scope of the invention.
In the description of the application, it should be understood that the azimuth or positional relationship indicated by the terms “center”, "up", "down", “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, "inside" and "outside” is based on the azimuth or positional relationship shown in the attached drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as limiting the application.
The terms "first" and "second" are only used for describing, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, the features defined as "first" and "second" may include one or 904714 more of these features explicitly or implicitly. In the description of the application, "plural" means two or more, unless otherwise specified.
In the description of the application, it should be noted that unless otherwise specified and 5 limited, the terms "installation” and "connection" should be broadly understood, for example, they can be fixed connection, detachable connection or integrated; they can be mechanical connection or electrical connection; they can be direct connection, or indirect connection through an intermediary; they can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to specific situations.
As shown in FIG.1, the example of the application provides an evaluation method for performance of wind turbine generator system, wherein the evaluation method for performance of wind turbine generator system comprises the following steps: S100: acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density; S200: calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections;
S300: determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and S400: evaluating the performance of the wind turbine generator system according to the comprehensive performance index.
Further, the power curve is calculated and plotted according to the real-time wind speed and the real-time air density, so that the obtained power curve is more accurate; the performance index of each power generation section is calculated according to the key wind speed points on the basis of the power curve, and then the comprehensive performance index is determined to evaluate the performance of the wind turbine generator system, so that the accuracy of performance evaluation of the wind turbine generator system is ensured.
The example of the application provides an evaluation method for performance of wind turbine generator system, wherein before “acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density”, the following shall be carried out: acquiring the rated wind speed of the wind turbine generator system.
The example of the application provides an evaluation method for performance of wind turbine generator system, wherein “extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections” comprises the followine#504714 extracting key wind speed points from the power curve, wherein the key wind speed points comprise a start-up wind speed point, a rated wind speed point and a cut-out wind speed point; and the power generation is divided into low wind speed power generation section, conventional power generation section, over-power power generation section and cut-out wind speed power generation section according to the start-up wind speed point, rated wind speed point and cut-out wind speed point.
Specifically, the power curve generally includes the following key points: start-up wind speed, which refers to the minimum wind speed at which the wind turbine generator system starts to generate electricity, and is generally about 3-4m/s; rated wind speed, which refers to the wind speed at which the wind turbine generator system reaches the maximum power generation capacity, with the output power reaching more than 90% of the rated power, and is generally about 12-15m/s; cut-out wind speed, which refers to the maximum wind speed at which the wind turbine generator system stops operating due to strong wind or other reasons, and is generally about 25-30m/s; so for the performance of a wind turbine generator system, the key wind speed points are an important index.
As shown in FIG.2, the example of the application provides an evaluation method for performance of wind turbine generator system, wherein “determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index” comprises the following: S310: determining the performance index of each power generation section by a preset calculation method; and S320: weighting the performance index of each power generation section according to the preset weight ratio, so as to obtain the comprehensive performance index by the preset calculation method.
As shown in FIG.3, the example of the application provides an evaluation method for performance of wind turbine generator system, wherein “determining the performance index of each power generation section by a preset calculation method” specifically comprises the following: S311: calculating the duration and generating capacity of the low wind speed power generation section, the conventional power generation section, the over-power power generation section and the cut-out wind speed power generation section respectively; and S312: calculating the performance index of each power generation section by W=(T-T0o)/T+(D-Do)/D, where, W is the performance index, T is the duration of each power generation section, To is the preset duration of each power generation section, D is the generating capacity of each power generation section, and Do is the preset generating capacity of each power generation section.
As shown in FIG 4, the example of the application provides an evaluation method for performance of wind turbine generator system, wherein “weighting the performance index bP504714 each power generation section according to the preset weight ratio, so as to obtain the comprehensive performance index by the preset calculation method” specifically comprises the following: S321: setting the weight ratio of low wind speed power generation section as SI, conventional power generation section as S2, over-power power generation section as S3, and cut-out wind speed power generation section as S4, with S1+S2+S3+S4=100%; and S322: calculating the comprehensive performance index of all sections by
C=W1*S1+W2*S2+W3*S3+W4#S4, where, C is the comprehensive performance index, W1 is the performance index of low wind speed power generation section, W2 is the performance index of conventional power generation section, W3 is the performance index of over-power power generation section, and W4 is the performance index of cut-out wind power generation section.
The example of the application provides an evaluation method for performance of wind turbine generator system, wherein “acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density” comprises the following: the real-time wind speed and the real-time air density are obtained at the same time, and the obtained real-time wind speed and real-time air density are relative to each other.
Specifically, for calculating the power curve of the wind turbine generator system, the adopted wind speed and air density are measured in real time, and are obtained at the same time, so that the accuracy of the obtained power curve can be ensured to be high.
As shown in FIG.5, the example of the application provides an evaluation device for performance of wind turbine generator system, wherein the evaluation device for performance of wind turbine generator system comprises: an Acquisition module, which is used for acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density; a calculation module, which is used for calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections; a Determination module, which is used for determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and an evaluation module, which is used for evaluating the performance of the wind turbine generator system according to the comprehensive performance index.
The example of the application provides an evaluation device for performance of wind turbine generator system, wherein the acquisition module is also used for acquiring the rated wind speed of the wind turbine generator system. LUS04714
To sum up, the example of the invention provides an evaluation method and device for performance of wind turbine generator system, wherein the evaluation method and device for performance of wind turbine generator system comprise the following steps: acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density; calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections; determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and evaluating the performance of the wind turbine generator system according to the comprehensive performance index. According to the invention, the power curve is calculated and plotted according to the real-time wind speed and the real-time air density, so that the obtained power curve is more accurate; the performance index of each power generation section is calculated according to the key wind speed points on the basis of the power curve, and then the comprehensive performance index is determined to evaluate the performance of the wind turbine generator system, so that the accuracy of performance evaluation of the wind turbine generator system is ensured.
Finally, it should be explained that obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the invention includes these modifications and variations provided that they are within the scope of the claims and their equivalents.
The above is only an example of the invention, but it does not limit the scope of the invention. Any structural changes made according to the invention should be regarded as falling within the protection scope of the invention as long as the essence of the invention is not lost. It can be clearly understood by the skilled in the art that for the convenience and conciseness of description, the specific working process and related explanations of the above device can refer to the corresponding process in the example of the above method, and will not be repeated here.
The term "include" or any other similar term is intended to cover non-exclusive inclusion, so that a process, method, article or equipment/device including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to the process, method, article or equipment/device.
So far, the technical scheme of the invention has been described in connection with the further example shown in the attached drawings, but it is easy for the skilled in the art fo 904714 understand that the protection scope of the invention is obviously not limited to the specific example. Under the premise of not deviating from the principle of the invention, the skilled in the art can make equivalent changes or substitutions on relevant technical features, and the technical schemes obtained after these changes or substitutions will fall within the protection scope of the invention.
The above is only the preferred example of the invention, and is not used to limit the protection scope of the invention.
Claims (9)
1. An evaluation method for performance of wind turbine generator system, comprising: acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density; calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections; determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and evaluating the performance of the wind turbine generator system according to the comprehensive performance index.
2. The evaluation method for performance of wind turbine generator system according to claim 1, wherein before “acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density”, the following shall be carried out: acquiring the rated wind speed of the wind turbine generator system.
3. The evaluation method for performance of wind turbine generator system according to claim 1, wherein “extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections” comprises the following: extracting key wind speed points from the power curve, wherein the key wind speed points comprise a start-up wind speed point, a rated wind speed point and a cut-out wind speed point; and dividing the power generation into low wind speed power generation section, conventional power generation section, over-power power generation section and cut-out wind speed power generation section according to the start-up wind speed point, rated wind speed point and cut-out wind speed point.
4. The evaluation method for performance of wind turbine generator system according to claim 1, wherein “determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index” comprises the following: determining the performance index of each power generation section by a preset calculation method; and weighting the performance index of each power generation section according to the preset/>04714 weight ratio, so as to obtain the comprehensive performance index by the preset calculation method.
5. The evaluation method for performance of wind turbine generator system according to claim 4, wherein “determining the performance index of each power generation section by a preset calculation method” specifically comprises the following: calculating the duration and generating capacity of the low wind speed power generation section, the conventional power generation section, the over-power power generation section and the cut-out wind speed power generation section respectively; and calculating the performance index of each power generation section by W=(T-To)/T+(D-Do)/D, where, W is the performance index, T is the duration of each power generation section, To is the preset duration of each power generation section, D is the generating capacity of each power generation section, and Do is the preset generating capacity of each power generation section.
6. The evaluation method for performance of wind turbine generator system according to claim 4, wherein “weighting the performance index of each power generation section according to the preset weight ratio, so as to obtain the comprehensive performance index by the preset calculation method” specifically comprises the following: setting the weight ratio of low wind speed power generation section as S1, conventional power generation section as S2, over-power power generation section as S3, and cut-out wind speed power generation section as S4, with S1+S2+S3+S4=100%; and calculating the comprehensive performance index of all sections by C=W1*S1+W2*S2+W3*S3+W4#S4, where, C is the comprehensive performance index, W1 is the performance index of low wind speed power generation section, W2 is the performance index of conventional power generation section, W3 is the performance index of over-power power generation section, and W4 is the performance index of cut-out wind power generation section.
7. The evaluation method for performance of wind turbine generator system according to claim 1, wherein “acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-time wind speed and real-time air density” comprises the following: the real-time wind speed and the real-time air density are obtained at the same time, and the obtained real-time wind speed and real-time air density are relative to each other.
8. An evaluation device for performance of wind turbine generator system, comprising: an acquisition module, which is used for acquiring operation data of the wind turbine generator system within a period of time, with the operation data at least comprising real-tint&/504714 wind speed and real-time air density; a calculation module, which is used for calculating the operation data to obtain a power curve of the wind turbine generator system, extracting key wind speed points in the power curve, and dividing the power curve into a plurality of power generation sections; a determination module, which is used for determining the performance index of each power generation section and synthesizing the performance indexes of all power generation sections to determine the comprehensive performance index; and an evaluation module, which is used for evaluating the performance of the wind turbine generator system according to the comprehensive performance index.
9. The evaluation device for performance of wind turbine generator system according to claim 8, wherein the acquisition module is also used for acquiring the rated wind speed of the wind turbine generator system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310685187.2A CN116882132A (en) | 2023-06-09 | 2023-06-09 | Performance evaluation method and device for wind generating set |
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| Publication Number | Publication Date |
|---|---|
| LU504714B1 true LU504714B1 (en) | 2024-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU504714A LU504714B1 (en) | 2023-06-09 | 2023-07-11 | Evaluation Method and Device for Performance of Wind Turbine Generator System |
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|---|---|
| CN (1) | CN116882132A (en) |
| LU (1) | LU504714B1 (en) |
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- 2023-06-09 CN CN202310685187.2A patent/CN116882132A/en active Pending
- 2023-07-11 LU LU504714A patent/LU504714B1/en active
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| CN116882132A (en) | 2023-10-13 |
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