CN116988922A - Intelligent speed regulation control method, system and storage medium for small wind generating set - Google Patents
Intelligent speed regulation control method, system and storage medium for small wind generating set Download PDFInfo
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- CN116988922A CN116988922A CN202310773611.9A CN202310773611A CN116988922A CN 116988922 A CN116988922 A CN 116988922A CN 202310773611 A CN202310773611 A CN 202310773611A CN 116988922 A CN116988922 A CN 116988922A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims abstract description 38
- 230000008859 change Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 12
- 238000010408 sweeping Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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Classifications
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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
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/321—Wind directions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The application provides an intelligent speed regulation control method, an intelligent speed regulation control system and a storage medium for a small wind generating set, and belongs to the field of wind generating sets. The method comprises the following steps: determining a current wind condition according to the wind speed; under the condition that the current wind condition is determined to be a long-time strong wind condition, the passive speed regulation is carried out through the passive speed regulation component to realize rapid wind avoidance; analyzing the reset torque born by the tail rudder according to the position of the tail rudder; calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque; obtaining the pitch changing requirement of the active speed regulating assembly according to a theoretical relation curve of windward components of wind speed and wind turbine aerodynamic moment and pitch angle, and changing the pitch until the wind driven generator is in windward state; and acquiring the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle for iterating the theoretical relation curve of the wind speed, the windward component of the wind wheel aerodynamic moment and the pitch angle.
Description
Technical Field
The application relates to the field of wind generating sets, in particular to an intelligent speed regulation control method of a small wind generating set, an intelligent speed regulation control system of the small wind generating set and a machine-readable storage medium.
Background
The speed regulation mode of the small wind generating set generally uses two passive speed regulation modes of wind wheel lateral deflection or mechanical pitch variation. The passive speed regulation mode has simple structure and high response speed, but has the following defects:
in a strong wind state, the machine set is in a non-windward state for a long time, the three blades are unevenly stressed, the fatigue load of the machine set is easily increased, the loss is serious, and the service life of the machine set is reduced.
When encountering strong wind conditions and strong gust, the machine set can be stopped due to overspeed triggering, the wind energy utilization rate is reduced, and the power generation income is reduced. If the wind turbine is frequently started and stopped in a strong wind state, a large amount of generated energy can be lost.
Different site selection positions of the wind generating set are different in wind conditions, deviation exists between the wind generating set and theoretical calculation, and the generated energy cannot reach an ideal level.
The novel speed regulation mode is continuously provided for stabilizing the speed regulation process of the wind generating set and improving the wind energy utilization rate in strong wind.
Disclosure of Invention
The application aims to provide an intelligent speed regulation control method, an intelligent speed regulation control system and a storage medium for a small wind generating set.
In order to achieve the above object, a first aspect of the present application provides an intelligent speed regulation control method for a small wind turbine, the method comprising:
s1: determining a current wind condition according to the wind speed;
s2: under the condition that the current wind condition is determined to be a long-time strong wind condition, the passive speed regulation is carried out through the passive speed regulation component to realize rapid wind avoidance;
s3: analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
s4: calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
s5: obtaining the pitch requirement of the active speed regulating assembly according to a theoretical relation curve of windward component of wind speed and wind turbine aerodynamic moment and pitch angle;
s6: performing pitch control according to the pitch control requirement;
s7: repeating S3-S6 until the wind driven generator is in a windward state;
s8: collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
s9: the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
In an embodiment of the present application, the method further includes:
under the condition that the current wind condition is determined to be an extreme gust wind condition or a short-time strong wind condition, the rapid wind avoidance is realized through the passive speed regulating component, and the wind speed is automatically recovered to a windward state through the passive speed regulating component after the wind speed is reduced.
The extreme gust wind condition or the short-time strong wind condition are burst wind conditions with short duration, the wind condition can be quickly restored to be similar to the previous level, the windward state can be automatically restored through the passive speed regulating component, and the response speed is high.
In the embodiment of the application, the wind driven generator is judged to be in a windward state by the following method, which comprises the following steps:
calculating an included angle between the wind direction and the position of the tail vane;
and if the included angle is smaller than the preset angle, the current wind generating set is in a windward state.
In the embodiment of the application, analyzing the reset torque born by the tail rudder according to the position of the tail rudder comprises the following steps:
calculating a first included angle between the tail rudder and the engine room according to the position of the tail rudder;
and calculating the reset torque born by the tail rudder according to the weight of the tail rudder and the first included angle.
In an embodiment of the present application, calculating a windward component of a turbine aerodynamic moment from a reset torque includes:
obtaining wind wheel deflection moment according to the reset torque;
calculating a wind wheel deflection angle according to the wind wheel deflection moment and the wind speed;
and calculating the windward component of the aerodynamic moment of the wind wheel according to the deflection angle of the wind wheel, the wind speed and the wind sweeping area of the fan.
The second aspect of the application provides an intelligent speed regulation control system of a small wind generating set, comprising: the device comprises an active speed regulation component, a passive speed regulation component, a detection component and a speed regulation control unit;
the passive speed regulation component is used for realizing rapid wind avoidance through passive speed regulation under the condition that the current wind condition is determined to be long-time strong wind condition;
the detection assembly is used for collecting the tail rudder position and pitch angle, wind speed and wind direction of the wind generating set;
the speed regulation control unit is used for:
analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
obtaining the pitch changing requirement of the active speed regulating assembly according to a theoretical relation curve of windward components of wind speed and wind turbine aerodynamic moment and pitch angle, and changing the pitch until the wind driven generator is in windward state;
collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
Through the technical means, when encountering strong wind for a long time, the rapid wind avoidance is realized through the passive speed regulating mechanism, the over-high rotating speed of the wind motor is avoided, the bearing load of the unit is overlarge, and then the active speed regulating component is adopted to regulate according to the theoretical relation curve of the windward component of the wind speed and the aerodynamic moment of the wind wheel and the pitch angle, so that the fan is in a windward state, the stress uniformity of three blades is ensured, the wind energy utilization rate is improved, and the generating income is improved.
In the embodiment of the application, the detection assembly comprises an anemometer, a pitch angle acquisition device and a passive speed regulation assembly angle encoder;
the anemometer is used for collecting wind speed and wind direction;
the passive speed regulation assembly angle encoder is used for acquiring the tail rudder position of the wind generating set;
the pitch angle acquisition device is used for acquiring the pitch angle of the wind generating set.
In an embodiment of the present application, the speed regulation control unit includes:
the recording module is used for recording the tail rudder position, the pitch angle, the wind speed and the wind direction of the wind generating set acquired by the detection assembly;
the analysis module is used for analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
obtaining the pitch-changing requirement of the active speed-regulating component according to a theoretical relation curve of the windward component of the wind speed and the wind turbine aerodynamic moment and the pitch angle;
a control module for:
performing pitch control according to the pitch control requirement;
collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
In the embodiment of the application, the passive speed regulating component adopts a wind wheel stall lateral deflection component, and the active speed regulating component adopts an electric pitch regulating component.
A third aspect of the present application provides a machine-readable storage medium having stored thereon instructions for causing a machine to perform the intelligent speed regulation control method of a small wind turbine generator set of the present application.
According to the technical scheme, when long-time strong wind is encountered, the rapid wind avoidance is realized through the passive speed regulating mechanism, the problem of short-time overspeed of the wind turbine is avoided, and the speed regulating reliability of the unit is improved; then, an active speed regulating component is adopted to regulate according to a theoretical relation curve of windward components of wind speed and wind turbine aerodynamic moment and pitch angle, so that the fan is in a windward state, three blades are guaranteed to be uniformly stressed, meanwhile, the wind energy utilization rate is improved, and the power generation income is improved; recording an actual relation curve of wind speed, windward component of aerodynamic moment of wind wheel and pitch angle after the fan is in windward state, and enabling the relation curve of windward component of aerodynamic moment of wind wheel and pitch angle to be more fit with the actual state through iterative replacement so as to realize intelligent rapid speed regulation of the wind generating set.
The method can provide the actual relation curve of the windward component of the wind speed and the wind turbine aerodynamic moment and the pitch angle suitable for the speed regulation of the fans at different positions, and apply the relation to the actual speed regulation running process of the unit, thereby improving the stability of the speed regulation process of the unit.
The system adopts two stall control systems of a passive speed regulating assembly and an active speed regulating assembly, improves the safety and reliability of the unit, and can realize the stall protection of the unit through the other stall control system when one set of speed regulating system fails.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
FIG. 1 is a flow chart of a method for intelligent speed regulation control of a small wind turbine generator system according to one embodiment of the present application;
FIG. 2 is a block diagram of an intelligent speed regulation control system for a small wind turbine provided in one embodiment of the application.
Detailed Description
The following describes specific embodiments of the present application in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the application, are not intended to limit the application.
FIG. 1 is a flow chart of an intelligent speed regulation control method of a small wind generating set according to an embodiment of the application. As shown in fig. 1, the method includes:
s1: and determining the current wind condition according to the wind speed. In the embodiment of the application, the rapid change of the wind speed can be analyzed by carrying out the moving average calculation according to the wind speeds at different times and used as the condition for judging the current wind condition. In the embodiment of the application, the wind conditions are divided into normal wind conditions and abnormal wind conditions, and the abnormal wind conditions are divided into long-time strong wind conditions, short-time strong wind conditions and extreme gust wind conditions.
S2: under the condition that the current wind condition is determined to be the long-time strong wind condition, the passive speed regulation is carried out through the passive speed regulation component, so that the rapid wind avoidance is realized. The passive speed regulating component mainly bears the functions of wind facing of a small wind generating set and quick stall of the set in a strong wind state, and is usually realized by a fan tail rudder.
S3: according to the position of the tail rudder, analyzing the reset torque born by the tail rudder, in the embodiment of the application, the reset torque born by the tail rudder is analyzed by the following modes:
calculating a first included angle between the tail rudder and the engine room according to the position of the tail rudder;
and calculating the reset torque born by the tail rudder according to the weight of the tail rudder and the first included angle.
S4: the windward component of the wind turbine aerodynamic moment is calculated from the reset torque, and in the embodiment of the application, the windward component of the wind turbine aerodynamic moment is calculated by:
the wind wheel deflection moment is obtained according to the reset torque, and the purpose of pitch control is to enable the wind generating set to be in a dynamic relatively stable windward state, and in the state, the reset torque is equal to the wind wheel deflection moment.
The wind wheel deflection angle is calculated according to the wind wheel deflection moment and the wind speed, the wind wheel deflection moment, the wind wheel side deflection angle and the wind wheel aerodynamic moment have corresponding relations, the wind wheel aerodynamic moment has corresponding relations with the wind speed, the wind sweeping area of the fan and the wind wheel deflection angle, and the wind wheel deflection angle and the wind wheel aerodynamic moment can be calculated according to the relations. The wind sweeping area of the fan can be obtained from the parameters of the fan system.
And calculating the windward component of the aerodynamic moment of the wind wheel according to the deflection angle of the wind wheel, the wind speed and the wind sweeping area of the fan. The windward component of the wind turbine aerodynamic moment is calculated according to the wind turbine aerodynamic moment and the wind turbine deflection angle, the wind turbine aerodynamic moment has a corresponding relation with wind speed, the wind sweeping area of the fan and the wind turbine deflection angle, and the windward component of the wind turbine aerodynamic moment can be calculated according to the relation.
S5: obtaining the pitch requirement of the active speed regulating assembly according to a theoretical relation curve of windward component of wind speed and wind turbine aerodynamic moment and pitch angle;
s6: performing pitch control according to the pitch control requirement; in the embodiment of the application, the active speed regulating assembly is adopted to change the pitch according to the pitch requirement, the active speed regulating assembly usually adopts an electric pitch regulating assembly, the electric driving mode is not limited, the three-blade structure mode can be uniformly driven or respectively driven, and the part of the assemblies mainly bear the steady speed regulating function of the unit in the windward state. Namely, when the wind speed increases, the active speed regulating component adjusts the pitch angle of the blades, and the aim of reducing the windward area of the wind wheel is also achieved. In the embodiment of the application, the active speed regulating component actively regulates the speed according to the theoretical relation curve of the windward component of the wind speed and the wind turbine aerodynamic moment and the pitch angle so as to recover the windward state of the wind turbine.
S7: repeating S3-S6 until the wind driven generator is in a windward state; in the embodiment of the application, whether the wind generating set is in a windward state is judged by the following modes:
calculating an included angle between the wind direction and the position of the tail vane;
and if the included angle is smaller than the preset angle, the current wind generating set is in a windward state. In practical application, if the wind direction and the tail vane position are positioned on the same straight line, the wind generating set is in a windward state, and if the wind direction and the tail vane position form an included angle of 90 degrees, the wind generating set is in a leeward state. In the embodiment of the application, the preset angle is 0.5 degrees. And taking the preset angle as a standard for judging the windward state, and reserving a certain error capacity.
S8: collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
s9: the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
In an embodiment of the present application, the method further includes:
under the condition that the current wind condition is determined to be an extreme gust wind condition or a short-time strong wind condition, the rapid wind avoidance is realized through the passive speed regulating component, and the wind speed is automatically recovered to a windward state through the passive speed regulating component after the wind speed is reduced.
The extreme gust wind condition or the short-time strong wind condition are burst wind conditions with short duration, the wind condition can be quickly restored to be similar to the previous level, the windward state can be automatically restored through the passive speed regulating component, and the response speed is high.
A second aspect of the present application provides an intelligent speed regulation control system for a small wind turbine, as shown in fig. 2, including: the device comprises an active speed regulation component, a passive speed regulation component, a detection component and a speed regulation control unit;
the passive speed regulation component is used for realizing rapid wind avoidance through passive speed regulation under the condition that the current wind condition is determined to be long-time strong wind condition;
the detection assembly is used for collecting the tail rudder position and pitch angle, wind speed and wind direction of the wind generating set;
the speed regulation control unit is used for:
analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
obtaining the pitch changing requirement of the active speed regulating assembly according to a theoretical relation curve of windward components of wind speed and wind turbine aerodynamic moment and pitch angle, and changing the pitch until the wind driven generator is in windward state;
collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
Through the technical means, when encountering strong wind for a long time, the rapid wind avoidance is realized through the passive speed regulating mechanism, the over-high rotating speed of the wind motor is avoided, the bearing load of the unit is overlarge, and then the active speed regulating component is adopted to regulate according to the theoretical relation curve of the windward component of the wind speed and the aerodynamic moment of the wind wheel and the pitch angle, so that the fan is in a windward state, the stress uniformity of three blades is ensured, the wind energy utilization rate is improved, and the generating income is improved.
In the embodiment of the application, the detection assembly comprises an anemometer, a pitch angle acquisition device and a passive speed regulation assembly angle encoder;
the anemometer is used for collecting wind speed and wind direction;
the passive speed regulation assembly angle encoder is used for acquiring the tail rudder position of the wind generating set;
the pitch angle acquisition device is used for acquiring the pitch angle of the wind generating set.
In an embodiment of the present application, the speed regulation control unit includes:
the recording module is used for recording the tail rudder position, the pitch angle, the wind speed and the wind direction of the wind generating set acquired by the detection assembly;
the analysis module is used for analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
obtaining the pitch-changing requirement of the active speed-regulating component according to a theoretical relation curve of the windward component of the wind speed and the wind turbine aerodynamic moment and the pitch angle;
a control module for:
performing pitch control according to the pitch control requirement;
collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
In the embodiment of the application, the passive speed regulating component adopts a wind wheel stall lateral deflection component, and the active speed regulating component adopts an electric pitch regulating component.
A third aspect of the present application provides a machine-readable storage medium having stored thereon instructions for causing a machine to perform the intelligent speed regulation control method of a small wind turbine generator set of the present application.
Those skilled in the art will appreciate that all or part of the steps in a method for implementing the above embodiments may be implemented by a program stored in a storage medium, where the program includes several instructions for causing a single-chip microcomputer, chip or processor (processor) to perform all or part of the steps in a method according to the embodiments of the application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The alternative embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the embodiments of the present application are not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the embodiments of the present application within the scope of the technical concept of the embodiments of the present application, and all the simple modifications belong to the protection scope of the embodiments of the present application. In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of embodiments of the application are not described in detail.
In addition, any combination of the various embodiments of the present application may be made, so long as it does not deviate from the idea of the embodiments of the present application, and it should also be regarded as what is disclosed in the embodiments of the present application.
Claims (10)
1. An intelligent speed regulation control method for a small wind generating set is characterized by comprising the following steps:
s1: determining a current wind condition according to the wind speed;
s2: under the condition that the current wind condition is determined to be a long-time strong wind condition, the passive speed regulation is carried out through the passive speed regulation component to realize rapid wind avoidance;
s3: analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
s4: calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
s5: obtaining the pitch requirement of the active speed regulating assembly according to a theoretical relation curve of windward component of wind speed and wind turbine aerodynamic moment and pitch angle;
s6: performing pitch control according to the pitch control requirement;
s7: repeating S3-S6 until the wind driven generator is in a windward state;
s8: collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
s9: the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
2. The intelligent speed regulation control method of a small wind generating set according to claim 1, further comprising:
under the condition that the current wind condition is determined to be an extreme gust wind condition or a short-time strong wind condition, the rapid wind avoidance is realized through the passive speed regulating component, and the wind speed is automatically recovered to a windward state through the passive speed regulating component after the wind speed is reduced.
3. The intelligent speed regulation control method of a small wind power generator set according to claim 1, wherein the method for judging that the wind power generator is in a windward state comprises the following steps:
calculating an included angle between the wind direction and the position of the tail vane;
and if the included angle is smaller than the preset angle, the current wind generating set is in a windward state.
4. The intelligent speed regulation control method of a small wind generating set according to claim 1, wherein analyzing the reset torque born by the tail rudder according to the position of the tail rudder comprises:
calculating a first included angle between the tail rudder and the engine room according to the position of the tail rudder;
and calculating the reset torque born by the tail rudder according to the weight of the tail rudder and the first included angle.
5. The intelligent speed regulation control method of a small wind generating set according to claim 1, wherein calculating a windward component of a wind turbine aerodynamic moment according to a reset torque comprises:
obtaining wind wheel deflection moment according to the reset torque;
calculating a wind wheel deflection angle according to the wind wheel deflection moment and the wind speed;
and calculating the windward component of the aerodynamic moment of the wind wheel according to the deflection angle of the wind wheel, the wind speed and the wind sweeping area of the fan.
6. An intelligent speed regulation control system of a small wind generating set, which is characterized by comprising: the device comprises an active speed regulation component, a passive speed regulation component, a detection component and a speed regulation control unit;
the passive speed regulation component is used for realizing rapid wind avoidance through passive speed regulation under the condition that the current wind condition is determined to be long-time strong wind condition;
the detection assembly is used for collecting the tail rudder position and pitch angle, wind speed and wind direction of the wind generating set;
the speed regulation control unit is used for:
analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
obtaining the pitch changing requirement of the active speed regulating assembly according to a theoretical relation curve of windward components of wind speed and wind turbine aerodynamic moment and pitch angle, and changing the pitch until the wind driven generator is in windward state;
collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
7. The intelligent speed regulation control system of a small wind generating set according to claim 6, wherein the detection assembly comprises an anemometer, a pitch angle acquisition device and a passive speed regulation assembly angle encoder;
the anemometer is used for collecting wind speed and wind direction;
the passive speed regulation assembly angle encoder is used for acquiring the tail rudder position of the wind generating set;
the pitch angle acquisition device is used for acquiring the pitch angle of the wind generating set.
8. The intelligent speed regulation control system of a small wind power generator set according to claim 6, wherein the speed regulation control unit comprises:
the recording module is used for recording the tail rudder position, the pitch angle, the wind speed and the wind direction of the wind generating set acquired by the detection assembly;
the analysis module is used for analyzing the reset torque born by the tail rudder according to the position of the tail rudder;
calculating the windward component of the aerodynamic moment of the wind wheel according to the reset torque;
obtaining the pitch-changing requirement of the active speed-regulating component according to a theoretical relation curve of the windward component of the wind speed and the wind turbine aerodynamic moment and the pitch angle;
a control module for:
performing pitch control according to the pitch control requirement;
collecting the corresponding relation between the wind speed and the wind speed change rate and the pitch angle when the wind driven generator is in a windward state, and generating an actual relation curve of windward components of wind speed and wind wheel aerodynamic moment and the pitch angle;
the wind speed, the actual relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle iterates the theoretical relation curve of the windward component of the wind wheel aerodynamic moment and the pitch angle.
9. The intelligent speed regulation control system of a small wind generating set according to claim 6, wherein the passive speed regulation component adopts a wind wheel stall sideways component, and the active speed regulation component adopts an electric pitch regulation component.
10. A machine-readable storage medium having stored thereon instructions for causing a machine to perform the intelligent speed regulation control method of a small wind power generator set according to any one of claims 1-5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310773611.9A CN116988922A (en) | 2023-06-27 | 2023-06-27 | Intelligent speed regulation control method, system and storage medium for small wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310773611.9A CN116988922A (en) | 2023-06-27 | 2023-06-27 | Intelligent speed regulation control method, system and storage medium for small wind generating set |
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| Publication Number | Publication Date |
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| CN116988922A true CN116988922A (en) | 2023-11-03 |
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| CN202310773611.9A Pending CN116988922A (en) | 2023-06-27 | 2023-06-27 | Intelligent speed regulation control method, system and storage medium for small wind generating set |
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| Country | Link |
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| CN (1) | CN116988922A (en) |
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