CN112610427B - Intelligent zero degree calibration method for blades of wind generating set - Google Patents
Intelligent zero degree calibration method for blades of wind generating set Download PDFInfo
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- CN112610427B CN112610427B CN202011501832.3A CN202011501832A CN112610427B CN 112610427 B CN112610427 B CN 112610427B CN 202011501832 A CN202011501832 A CN 202011501832A CN 112610427 B CN112610427 B CN 112610427B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/30—Commissioning, e.g. inspection, testing or final adjustment before releasing for production
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- 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
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Abstract
The invention discloses an intelligent zero degree calibration method for blades of a wind generating set, which comprises the following steps: collecting blade angles, wind speeds and power generation power of all running fans; establishing a database; selecting a fan with the minimum power generation power as a current fan; selecting a fan with the maximum power generation power as a reference fan; calculating the power generation power difference between the current fan and the reference fan; determining a blade angle difference corresponding to the power generation power difference, and superposing the blade angle difference to the current blade angle of the current fan; calculating the power generation power difference of the current fan before and after calibration; determining a blade angle difference corresponding to the power generation power difference, and superposing the blade angle difference to the current blade angle of the current fan; continuing to calibrate the blade angle of the current fan until the calibrated generating power reaches the set requirement; and calibrating the angle of the blade of the next fan until the power generation power of all running fans reaches the set requirement. The method of the invention can ensure that the blades operate at the optimal angle and improve the generating power of the wind turbine generator to the maximum extent.
Description
Technical Field
The invention relates to the technical field of wind generating sets, in particular to an intelligent zero degree calibration method for blades of a wind generating set.
Background
A wind turbine is a device for generating power by controlling a pitch system to rotate blades to absorb wind energy, and the blades are usually rotated to a zero or near zero position before a rated wind speed in order to absorb the wind energy to the maximum. When the wind driven generator set is designed, the zero degree position of the blade needs to be determined, and the zero degree of the blade is marked before the blade leaves a factory. When the blade is operated on site, the zero degree of the electrical system is directly calibrated according to the zero degree mark of the blade, so that the calibrated blade operates between zero degree and feathering angle. However, zero degree marking is often not accurate enough when the blade leaves the factory, namely, a certain deviation exists between the zero degree marking and the actual zero degree, so that the blade cannot operate at the optimal angle during power generation, wind energy absorption is influenced, and the generated power is reduced.
Disclosure of Invention
In order to solve part or all technical problems in the prior art, the invention provides an intelligent zero-degree calibration method for blades of a wind generating set.
The invention discloses an intelligent zero degree calibration method for blades of a wind generating set, which comprises the following steps:
step S1, collecting blade angles, wind speeds and power generation power information of all running fans of the wind power plant;
step S2, establishing a database including blade angles, wind speeds and power generation power information of all running fans and a mapping relation among the blade angles, the wind speeds and the power generation power;
step S3, selecting a fan with the minimum power generation power as the current fan;
step S4, selecting a fan with the maximum power generation power as a reference fan;
step S5, calculating the power generation power difference between the current fan and the reference fan;
step S6, determining a blade angle difference corresponding to the power generation power difference by using a database, and superposing the blade angle difference to the current blade angle of the current fan so as to calibrate the blade angle of the current fan;
step S7, calculating the power generation power difference of the current fan before and after calibration;
step S8, determining a blade angle difference corresponding to the power generation power difference by using a database, and superposing the blade angle difference to the current blade angle of the current fan so as to calibrate the blade angle of the current fan;
step S9, returning to step S7 to continue the blade angle calibration of the current fan until the power generation power of the current fan after calibration reaches the set requirement;
and step S10, returning to step S3 to continue the blade angle calibration of the next fan until the power generation power of all running fans reaches the set requirement.
In some optional embodiments, the method further comprises:
when a database is established, deleting the acquired abnormal data;
the abnormal data represents data that the blade angle, the wind speed and/or the generated power of the wind turbine exceed a set deviation range.
In some optional embodiments, the information of the blade angle, the wind speed and the generated power of all the operating fans of the wind power plant is collected by using a SCADA system.
In some optional embodiments, the method further comprises:
and displaying the angle deviation value of the fan blade before and after calibration.
In some optional embodiments, the method further comprises:
and displaying the generated power deviation value of the fan before and after calibration.
The technical scheme of the invention has the following main advantages:
the intelligent calibration method for the zero degree of the blade of the wind generating set carries out intelligent calibration on the zero degree of the blade by adopting a comparison database and a closed loop circulation control mode, so that the actual running zero degree position of the blade does not depend on zero degree marks of the blade when the blade leaves a factory, the blade can be ensured to run at the optimal angle, the generating power of the wind generating set is improved to the maximum extent, and the method is convenient to operate, is not only suitable for requirements of zero degree calibration and generating power optimization of the blade in a batch place of a wind power plant, but also is suitable for requirements of zero degree calibration and generating power optimization of the blade in different types, different climatic condition areas and different seasons.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of an intelligent zero degree calibration method for a wind turbine generator system blade according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides an intelligent zero degree calibration method for a wind turbine generator system blade, including:
step S1, collecting blade angles, wind speeds and power generation power information of all running fans of the wind power plant;
step S2, establishing a database including blade angles, wind speeds and power generation power information of all running fans and a mapping relation among the blade angles, the wind speeds and the power generation power;
step S3, selecting a fan with the minimum power generation power as the current fan;
step S4, selecting a fan with the maximum power generation power as a reference fan;
step S5, calculating the power generation power difference between the current fan and the reference fan;
step S6, determining a blade angle difference corresponding to the power generation power difference by using a database, and superposing the blade angle difference to the current blade angle of the current fan so as to calibrate the blade angle of the current fan;
step S7, calculating the power generation power difference of the current fan before and after calibration;
step S8, determining a blade angle difference corresponding to the power generation power difference by using a database, and superposing the blade angle difference to the current blade angle of the current fan so as to calibrate the blade angle of the current fan;
step S9, returning to step S7 to continue the blade angle calibration of the current fan until the power generation power of the current fan after calibration reaches the set requirement;
and step S10, returning to step S3 to continue the blade angle calibration of the next fan until the power generation power of all running fans reaches the set requirement.
The principle of the method for zero-degree intelligent calibration of the blades of the wind generating set according to an embodiment of the present invention is specifically described below.
Specifically, blade angles, wind speeds and power generation power information of all running fans of a wind power plant are collected firstly, and a database comprising the blade angles, the wind speeds and the power generation power information of all the running fans and a mapping relation between the blade angles, the wind speeds and the power generation power is established based on the collected data information; then, selecting a fan with the minimum power generation power as a current fan, selecting a fan with the maximum power generation power as a reference fan, calculating the power generation power difference between the current fan and the reference fan, converting the power generation power difference between the current fan and the reference fan into a corresponding blade angle difference by using a database, calibrating the blade angle of the current fan by using the blade angle difference as an initial calibration signal, and superposing the calculated blade angle difference to the current blade angle of the current fan; calculating the power generation power difference of the current fan before and after calibration, converting the power generation power difference before and after calibration into corresponding blade angle difference by using a database, calibrating the blade angle of the current fan by taking the blade angle difference as a feedback signal, and superposing the calculated blade angle difference to the current blade angle of the current fan; judging whether the power generation power of the current fan after calibration meets the set requirement, if not, utilizing the power generation power difference of the current fan before and after calibration to continuously calibrate the blade angle of the current fan until the power generation power of the current fan after calibration meets the set requirement; if so, finishing the blade angle calibration of the current fan, and continuously selecting the fan with the minimum and the maximum generating power from all the running fans as the current fan and the reference fan respectively to carry out the blade angle calibration of the next fan until the generating power of all the running fans reaches the set requirement.
The intelligent calibration method for the zero degree of the blade of the wind generating set provided by the embodiment of the invention is used for intelligently calibrating the zero degree of the blade by adopting a comparison database and a closed loop cycle control mode, so that the actual running zero degree position of the blade does not completely depend on the zero degree mark of the blade when the blade leaves a factory, the blade can be ensured to run at the optimal angle, the generating power of the wind generating set is improved to the maximum extent, and the method is convenient to operate, is not only suitable for the requirements of zero degree calibration and generating power optimization of the blade in batch places of a wind power plant, but also is suitable for the requirements of zero degree calibration and generating power optimization of the blade in different machine types, different climatic condition areas and different seasons.
Optionally, in an embodiment of the present invention, the method may further include: and when the database is established, deleting the acquired abnormal data.
The abnormal data represents data that the blade angle, the wind speed and/or the generated power of the fan exceed a set deviation range.
The calibration accuracy of the blade angle can be further improved by deleting the acquired abnormal data when the database is established.
Optionally, in an embodiment of the present invention, information of blade angles, wind speeds, And power generation powers of all operating fans of the wind farm is acquired by using an scada (supervisory Control And Data acquisition) system.
Referring to fig. 1, in an embodiment of the present invention, the method may further include: and displaying the angle deviation value of the fan blade before and after calibration.
The zero-degree position of actual operation of the blade can be conveniently observed and recorded by workers through displaying the angle deviation value of the blade of the fan before and after calibration.
The display module can be arranged to display the angle deviation value of the fan blade before and after calibration, and the display module can be a display screen.
Further, in an embodiment of the present invention, the method may further include: and displaying the generated power deviation value of the fan before and after calibration.
The generated power deviation value of the fan before and after calibration is displayed, so that a worker can conveniently observe and record the generated power of the fan, and whether the generated power meets the set requirement is determined.
Similarly, the generated power deviation value of the fan before and after calibration can be displayed by setting a display module, and the display module can be a display screen, for example.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. An intelligent zero degree calibration method for blades of a wind generating set is characterized by comprising the following steps:
step S1, collecting blade angles, wind speeds and power generation power information of all running fans of the wind power plant;
step S2, establishing a database including blade angles, wind speeds and power generation power information of all running fans and a mapping relation among the blade angles, the wind speeds and the power generation power;
step S3, selecting a fan with the minimum power generation power as the current fan;
step S4, selecting a fan with the maximum power generation power as a reference fan;
step S5, calculating the power generation power difference between the current fan and the reference fan;
step S6, determining a blade angle difference corresponding to the power generation power difference by using a database, and superposing the blade angle difference to the current blade angle of the current fan so as to calibrate the blade angle of the current fan;
step S7, calculating the power generation power difference of the current fan before and after calibration;
step S8, determining a blade angle difference corresponding to the power generation power difference by using a database, and superposing the blade angle difference to the current blade angle of the current fan so as to calibrate the blade angle of the current fan;
step S9, returning to step S7 to continue the blade angle calibration of the current fan until the power generation power of the current fan after calibration reaches the set requirement;
and step S10, returning to step S3 to continue the blade angle calibration of the next fan until the power generation power of all running fans reaches the set requirement.
2. The method for intelligently calibrating the zero degrees of the blades of the wind generating set according to claim 1, wherein the method further comprises the following steps:
when a database is established, deleting the acquired abnormal data;
the abnormal data represents data that the blade angle, the wind speed and/or the generated power of the wind turbine exceed a set deviation range.
3. The method for intelligently calibrating the zero degree of the blades of the wind generating set according to claim 1, wherein the blade angle, the wind speed and the power generation power information of all operating fans of the wind power plant are acquired by a SCADA system.
4. The method for intelligently calibrating the zero degrees of the blades of the wind generating set according to claim 1, wherein the method further comprises the following steps:
and displaying the angle deviation value of the fan blade before and after calibration.
5. The method for intelligently calibrating the zero degrees of the blades of the wind generating set according to claim 1, wherein the method further comprises the following steps:
and displaying the generated power deviation value of the fan before and after calibration.
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Patent Citations (7)
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