CN114294162A - Wind driven generator control method and device, storage medium and electronic equipment - Google Patents
Wind driven generator control method and device, storage medium and electronic equipment Download PDFInfo
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Abstract
The disclosure belongs to the field of wind power generation, and particularly relates to a control method, a control device, a control medium and electronic equipment for a wind driven generator, wherein the method comprises the following steps: when the generator is determined to be in a specified running state, acquiring generator rotating speed data of the generator; judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator; if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.
Description
Technical Field
The disclosure relates to the technical field of control of wind generating sets, in particular to a control method and device of a wind generating set, a storage medium and electronic equipment.
Background
Wind power generation is a new energy technology that has been developed relatively maturely. Wind power generation requires strong environmental adaptability, so that technologies for controlling stable operation of wind generating sets are receiving increasing attention.
In the related technology, a large-scale wind driven generator is a nonlinear system with large inertia and large time lag, and different control strategies are adopted in different operation intervals by the current unit to realize different control targets. Generally, in an operating wind speed section, a unit operating interval is mainly divided into a minimum rotating speed area, a maximum wind energy capture area, a transition section and a full-power section. A plurality of actual operation conditions on site indicate that the generator overspeed problem easily occurs when the unit is in the transition section, because the unit is in the transition section, the general wind speed is high, when large turbulence is encountered, the rotating speed of the generator fluctuates greatly in a short time, and the rotating speed of the generator is suddenly increased or reduced, which may cause the limit load of the unit to exceed the limit, and the safe and stable operation of the unit is influenced, or the rotating speed of the unit exceeds a certain protection threshold value, and the generator overspeed fault is triggered, and the generating capacity is lost.
When the existing unit operates in the transition section, the constant rotating speed control is realized through a designed PID controller or PI controller. However, currently, main control parameters of a PID controller or a PI controller are designed to be fixed values, and for some special working conditions (such as gust, etc.), when the wind speed of a unit is rapidly increased or rapidly decreased in a short time, the controller needs to respond faster or slower to control the fluctuation of the rotating speed of a generator, and the control parameters are usually designed to be fixed values, so that the unit responds too slowly or too fast, generates large fluctuation of the rotating speed of the generator, and may trigger the over-speed fault of the unit, thereby causing the loss of the generated energy.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide a method and an apparatus for controlling a wind turbine, a storage medium, and an electronic device, so as to solve the above technical problems at least to some extent.
According to a first aspect of embodiments of the present disclosure, there is provided a wind turbine control method, the method including:
when the generator is determined to be in a specified running state, acquiring generator rotating speed data of the generator;
judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator;
if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.
Optionally, in an embodiment, the adjusting the proportional gain coefficient of the controller of the generator to the target proportional gain coefficient includes:
determining a target coefficient;
determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient;
wherein the target proportional gain coefficient and the proportional gain coefficient are in a linear relationship.
Optionally, in an embodiment, the determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient includes:
determining the target proportional gain coefficient K based on the following formulap：
Kp＝Kp0(1+a)；
Wherein, Kp0Representing the proportional gain coefficient, a representing the target coefficient, 0 < a < 0.1.
Optionally, in an embodiment, the determining that the generator is in the designated operating state includes:
calculating the average generator rotating speed and the average output power of the generator within a preset time length;
when the average generator rotating speed is greater than or equal to a first specified rotating speed and the average output power is less than or equal to specified power, determining that the generator is in the specified running state;
the first specified rotating speed is a product value of the maximum rotating speed of the generator and a rotating speed coefficient of the generator, and the value of the rotating speed coefficient is 0.85-0.95;
the specified power is a difference value obtained by subtracting a power margin from the rated power of the generator, and the value of the power margin is 20-80 kW.
Optionally, in an embodiment, the acquiring the generator speed data of the generator includes:
acquiring a first generator rotating speed of the generator at the current moment and a second generator rotating speed of the generator at the last moment;
the judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps:
calculating a rotational speed difference between the rotational speed of the first generator and the rotational speed of the second generator;
when the rotating speed difference value is larger than zero and the rotating speed of the first generator is larger than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.
Optionally, in an embodiment, the acquiring the generator speed data of the generator includes:
acquiring a plurality of generator rotating speeds of the generator within a preset time period, wherein the preset time period comprises the current moment;
the judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps:
calculating an average rate of change of the plurality of generator speeds;
when the average change rate is greater than zero and the rotating speed of the generator corresponding to the current moment is greater than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.
Optionally, in an embodiment, the method further includes:
judging whether the generator is in a yawing state or not;
and when the generator is not in a yawing state and the change of the rotating speed of the generator meets the preset condition, adjusting the proportional gain coefficient of a torque controller of the generator to the target proportional gain coefficient.
According to a second aspect of the embodiments of the present disclosure, there is provided a wind turbine control apparatus including:
the data acquisition module is used for acquiring the generator rotating speed data of the generator when the generator is determined to be in the specified running state;
the rotating speed judging module is used for judging whether the rotating speed change of the generator meets a preset condition or not based on the rotating speed data of the generator;
and the control and regulation module is used for regulating the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient if the judgment result of the rotating speed judgment module is positive.
According to a third aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the wind turbine control method of any of the above embodiments.
According to a fourth aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:
a memory having a computer program stored thereon;
a processor for implementing the wind turbine control method according to any of the above embodiments when executing the computer program.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the disclosure, when the wind driven generator is determined to be in a specified operation state, the generator rotating speed data of the generator is obtained; judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator; if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient. The direct measurement of the wind speed can be avoided, the detection of the rotating speed of the generator is adopted to judge the change of the rotating speed of the generator so as to indirectly measure the wind speed, when the sudden change of the wind speed is indirectly measured, namely the change of the rotating speed of the generator meets the preset condition, the proportional gain coefficient of the controller is controlled and adjusted to the target proportional gain coefficient, so that the wind speed of the generator set is sharply increased or sharply reduced in a short time under certain special working condition conditions (such as gust and the like), the controller can respond faster through the adjustment of control parameters, namely the control parameters are matched with the change of the wind speed, the overlarge fluctuation of the rotating speed of the generator can be effectively reduced, the running stability of the generator set is improved, and the loss of the generated energy caused by the triggering of the over-speed faults of the generator set is avoided.
Drawings
FIG. 1 shows a schematic representation of an operating region of a wind turbine;
FIG. 2 illustrates a block diagram of a wind turbine control in the related art;
FIG. 3 illustrates a flowchart of a method for controlling a wind turbine according to an exemplary embodiment of the present disclosure;
FIG. 4 illustrates a wind turbine control block diagram in an exemplary embodiment of the present disclosure;
FIG. 5 shows a schematic view of a wind turbine control apparatus according to an exemplary embodiment of the present disclosure; .
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
Modern large wind power generators generally adopt a variable-speed and variable-pitch control mode, and are generally divided into 4 different operation sections within an operation wind speed range (from cut-in wind speed to cut-out wind speed), and the different operation sections adopt different control strategies to achieve different control targets, as shown in fig. 1, I: a minimum rotating speed area, torque control (PI or PID), wherein the rotating speed is stabilized at a set minimum rotating speed; and (II) zone: the maximum wind energy capturing area tracks the optimal tip speed ratio to realize maximum wind energy capturing; and (3) zone III: a transition section, torque control (PI or PID), and setting the rotating speed as the maximum rotating speed of the unit; zone IV: full-power section, pitch control (PI or PID), typically operates at constant power.
When the unit operates in the transition section, a torque control mode is adopted, the torque control mode is generally realized through a PI controller or a PID controller, the rated rotating speed of the generator, namely the given rotating speed, is used as the reference rotating speed, the deviation between the actual rotating speed and the reference rotating speed of the unit is detected, the torque requirement of the unit is adjusted through the controller, and a basic control block diagram is shown in fig. 2.
The control parameters of the PI controller or the PID controller generally include a proportional gain coefficient, an integral gain coefficient, and a differential gain coefficient. Generally, when the controller is designed, the 3 control parameters are determined according to the system output response characteristic and the system stability characteristic, and the stable rotating speed of the unit is ensured. It should be noted, however, that in general, the above control parameters remain unchanged for the same model. Wind power generators of the same type can be installed under different terrain conditions or operated under different working conditions, when wind speed and wind direction change frequently due to terrain at certain machine points, especially under the condition of strong wind, when the wind speed or the wind direction change suddenly, the rotating speed of the generator increases suddenly, overspeed faults can be caused, and power generation loss is brought. This is because the above control parameters are designed to be fixed values, which results in too slow or too fast response of the unit, for example, a large fluctuation of the generator speed, and a sudden increase of the generator speed.
In order to at least partially solve the above problem, the present exemplary embodiment provides a wind turbine control method, as shown in fig. 3, including the steps of:
step S101: and when the generator is determined to be in the designated running state, acquiring the generator rotating speed data of the generator.
For example, the specified operating state is an operating state of a transition section, and the set rotating speed is usually the maximum rotating speed of the unit. When it is determined that the generator is in the transitional operating state, generator speed data may be obtained.
Step S102: and judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator.
For example, the fluctuation of the generator speed indirectly reflects the change of the wind speed, for example, the sudden change of the wind speed usually causes the change of the generator speed, so in this embodiment, the generator speed is detected to determine whether the change of the generator speed meets the preset condition to indirectly determine whether the sudden change of the wind speed is encountered.
Step S103: if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.
For example, the controller may be a PID controller or a PI controller, and when it is determined that the change in the rotational speed of the generator meets the preset condition, it is determined that the wind speed is suddenly changed, and at this time, for example, the control parameter of the PID controller, such as the proportional gain coefficient (the integral and differential gain coefficients may be kept unchanged), is adjusted to the target proportional gain coefficient, so as to improve the response time of the controller, and achieve the purpose of controlling the fluctuation of the rotational speed of the generator. The control logic of the scheme for adjusting the proportional gain factor of the controller in this embodiment is shown in fig. 4.
According to the scheme of the embodiment of the disclosure, direct measurement of the wind speed can be avoided, the wind speed mutation is indirectly measured by detecting the rotating speed of the generator and judging the rotating speed change of the generator, when the wind speed mutation is indirectly measured, namely the change of the rotating speed of the generator meets the preset condition, the proportional gain coefficient of the controller is controlled and adjusted to the target proportional gain coefficient, so that under certain special working condition conditions (such as gust or large turbulence and the like), the wind speed of the unit is sharply increased or sharply reduced in a short time, at the moment, the controller can respond faster through adjustment of control parameters, namely the control parameters are matched with the wind speed change, the overlarge fluctuation of the rotating speed of the generator can be effectively reduced, the operation stability of the unit is improved, and the problems of generating capacity loss and the like caused by triggering the overspeed type fault of the unit are avoided.
In addition, generally speaking, the anemoscope is installed behind the impeller, disturbed by the impeller, the wind speed is not accurately detected, the wind speed is not directly detected in the embodiment, the wind speed is not used as an input factor for control in the embodiment, the anemoscope can be avoided, and the cost is reduced.
Optionally, in an embodiment, adjusting the proportional gain coefficient of the controller of the generator to the target proportional gain coefficient in step S103 includes: determining a target coefficient; determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient; wherein the target proportional gain coefficient and the proportional gain coefficient are in a linear relationship.
For example, the target coefficient may be determined based on a rotational speed variation of the generator, such as an increment, but is not limited thereto.
Specifically, in one embodiment, the scaling factor based on the scaling factor,and the target coefficient, determining the target proportional gain coefficient, comprising: determining the target proportional gain coefficient K based on the following formulap：
Kp＝Kp0(1+a)；
Wherein, Kp0Representing the proportional gain coefficient, a representing the target coefficient, 0 < a < 0.1.
In this embodiment, the value of the target coefficient a is limited in the above range, so that a large jump in the adjustment of the proportional gain coefficient of the controller can be prevented, thereby further effectively reducing the excessive fluctuation of the rotation speed of the generator and improving the operation stability of the unit.
Optionally, in an embodiment, the determining that the generator is in the designated operating state in step S101 includes: calculating the average generator rotating speed and the average output power of the generator within a preset time length; when the average generator rotating speed is greater than or equal to a first specified rotating speed and the average output power is less than or equal to specified power, determining that the generator is in the specified running state; the first specified rotating speed is a product value of the maximum rotating speed of the generator and a rotating speed coefficient of the generator, and the value of the rotating speed coefficient is 0.85-0.95; the specified power is a difference value obtained by subtracting a power margin from the rated power of the generator, and the value of the power margin is 20-80 kW.
For example, the preset time period may be 1min, but is not limited thereto. The decision to determine that the generator is in the specified operating state, i.e., the operating state of the transition segment, may generally be determined by the following equation:
wherein ω is an average generator speed of the generator within a preset time period, i.e., an average value of the generator speed at each moment within the preset time period, p is an average output power of the generator within the preset time period, i.e., an average value of the output power at each moment within the preset time period, ω ismaxThe maximum rotational speed at which the generator operates; gamma is generator rotorThe speed coefficient is generally 0.85-0.95; p is a radical of0The rated power of the generator is kW; delta is a power margin, and the value is 20-80 kW.
By the aid of the method, the running state of the generator in the designated running state, namely the running state of the transition section, can be accurately judged, the control process of the embodiment is started only when the generator is determined to be in the designated running state, and the running control accuracy of the transition section of the generator can be improved.
Optionally, in an embodiment, the acquiring of the generator speed data of the generator in step S101 includes: and acquiring a first generator rotating speed omega (t) of the generator at the current moment and a second generator rotating speed omega (t-1) of the generator at the last moment. The judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps: calculating a rotational speed difference value omega' between the rotational speed of the first generator and the rotational speed of the second generator; when the rotation speed difference value is larger than zero and the first generator rotation speed is larger than or equal to a second specified rotation speed omega0Determining that the change of the rotating speed of the generator meets the preset condition; wherein the second specified rotation speed ω0Is the maximum rotational speed ω of the generatormax1.03 to 1.08 times of0＝b*ωmaxAnd b is 1.03-1.08.
Illustratively, when ω' ≧ ω (t) - ω (t-1) > 0, and ω (t) ≧ ω0And the change of the rotating speed of the generator meets the preset condition.
Optionally, in another embodiment, the obtaining of the generator speed data of the generator in step S101 includes: the method comprises the steps of obtaining a plurality of generator rotating speeds of the generator in a preset time period, wherein the preset time period comprises the current moment. Correspondingly, in step S102, based on the generator rotation speed data, determining whether the rotation speed change of the generator meets a preset condition includes: calculating an average rate of change of the plurality of generator speeds; when the average change rate is larger than zero and the rotating speed of the generator corresponding to the current moment is larger than or equal to a second specified rotating speed omega0And then determining that the change of the rotating speed of the generator meets the preset condition.
For example, calculating the average rate of change Δ ω of the plurality of generator speeds may be determined by the following equation:
wherein, ω (t)i) Representing the generator speed, ω (t), corresponding to the ith moment in a preset time period, e.g. 1 minutei+1) represents the generator speed corresponding to a time adjacent to the i-th time, i being 1, 2, …, N, i.e., N times in total.
Optionally, in an embodiment, the method may further include the steps of:
step i): and judging whether the generator is in a yawing state or not.
Specifically, the wind driven generator requires that the wind wheel is always in a windward state during operation, the rotating speed of the wind wheel can be very high in the windward state, the generating efficiency can also be very high, the rotating speed of the wind wheel is fast and slow due to the dynamic wind speed, and when the rotating speed of the wind wheel is too fast, the wind wheel is in a non-windward state, which is called a yaw state. In this embodiment, it can be determined whether the wind turbine is in a yaw state. The specific determination method can be understood by referring to the prior art, and is not limited thereto, and is not described herein again.
Step ii): and when the generator is not in a yawing state and the change of the rotating speed of the generator meets the preset condition, adjusting the proportional gain coefficient of a torque controller of the generator to the target proportional gain coefficient.
That is, when it is determined that the generator is not in the yaw state and the change in the rotational speed of the generator satisfies the preset condition, the proportional gain coefficient of the torque controller of the generator is adjusted to the target proportional gain coefficient. Because fluctuation of the rotating speed of the generator can be brought when the wind power generator is in a yaw state, the influence brought by the condition needs to be eliminated in the scheme of the embodiment, so that the operation working condition is eliminated, the control and adjustment of the wind power generator are more accurate, and the error adjustment is avoided.
The embodiment of the present disclosure also provides a wind turbine control device, and as shown in fig. 5, the wind turbine control device may include:
the data acquisition module 501 is configured to acquire generator rotation speed data of the generator when it is determined that the generator is in a specified operation state;
a rotation speed judging module 502, configured to judge whether a rotation speed change of the generator meets a preset condition based on the generator rotation speed data;
and a control adjustment module 503, configured to adjust the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient if the determination result of the rotation speed determination module is yes.
According to the scheme of the embodiment of the disclosure, direct measurement of the wind speed can be avoided, the wind speed mutation is indirectly measured by detecting the rotating speed of the generator and judging the rotating speed change of the generator, when the wind speed mutation is indirectly measured, namely the change of the rotating speed of the generator meets the preset condition, the proportional gain coefficient of the controller is controlled and adjusted to the target proportional gain coefficient, so that under certain special working condition conditions (such as gust or large turbulence and the like), the wind speed of the unit is sharply increased or sharply reduced in a short time, at the moment, the controller can respond faster through adjustment of control parameters, namely the control parameters are matched with the wind speed change, the overlarge fluctuation of the rotating speed of the generator can be effectively reduced, the operation stability of the unit is improved, and the problems of generating capacity loss and the like caused by triggering the overspeed type fault of the unit are avoided.
Optionally, in an embodiment, the control and adjustment module 503 is configured to: determining a target coefficient; determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient; wherein the target proportional gain coefficient and the proportional gain coefficient are in a linear relationship.
Optionally, in an embodiment, the control adjustment module 503 is configured to determine the target proportional gain coefficient K based on the following formulap：
Kp＝Kp0(1+a)；
Wherein, Kp0Representing the proportional gain coefficient, a representing the target coefficient, 0 < a < 0.1.
Optionally, in an embodiment, the apparatus further includes a status detection module configured to: calculating the average generator rotating speed and the average output power of the generator within a preset time length; when the average generator rotating speed is greater than or equal to a first specified rotating speed and the average output power is less than or equal to specified power, determining that the generator is in the specified running state; the first specified rotating speed is a product value of the maximum rotating speed of the generator and a rotating speed coefficient of the generator, and the value of the rotating speed coefficient is 0.85-0.95; the specified power is a difference value obtained by subtracting a power margin from the rated power of the generator, and the value of the power margin is 20-80 kW.
Optionally, in an embodiment, the data obtaining module 501 obtains generator speed data of the generator, including: and acquiring a first generator rotating speed of the generator at the current moment and a second generator rotating speed of the generator at the last moment. The rotation speed determining module 502 determines whether the change of the rotation speed of the generator meets a preset condition based on the rotation speed data of the generator, including: calculating a rotational speed difference between the rotational speed of the first generator and the rotational speed of the second generator; when the rotating speed difference value is larger than zero and the rotating speed of the first generator is larger than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.
Optionally, in an embodiment, the data obtaining module 501 obtains generator speed data of the generator, including: the method comprises the steps of obtaining a plurality of generator rotating speeds of the generator in a preset time period, wherein the preset time period comprises the current moment. The rotation speed determining module 502 determines whether the change of the rotation speed of the generator meets a preset condition based on the rotation speed data of the generator, including: calculating an average rate of change of the plurality of generator speeds; when the average change rate is greater than zero and the rotating speed of the generator corresponding to the current moment is greater than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.
Optionally, in an embodiment, the apparatus further includes a state determination module, configured to determine whether the generator is in a yaw state; the control adjustment module 503 is configured to adjust a proportional gain coefficient of a torque controller of the generator to the target proportional gain coefficient when the generator is not in a yaw state and a change in a rotation speed of the generator meets the preset condition.
The embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the wind turbine control method according to any of the embodiments.
In addition, another embodiment of the present disclosure also provides an electronic device, including a memory having a computer program stored thereon; a processor for implementing the wind turbine control method according to any of the above embodiments when executing the computer program.
According to the scheme of the electronic equipment and the storage medium, direct measurement of the wind speed can be avoided, the wind speed mutation is indirectly measured by detecting the rotating speed of the generator and judging the rotating speed change of the generator, when the wind speed mutation is indirectly measured, namely the change of the rotating speed of the generator meets the preset condition, the proportional gain coefficient of the controller is controlled and adjusted to be the target proportional gain coefficient, so that under certain special working condition conditions (such as gust or large turbulence and the like), the wind speed of the unit is rapidly increased or rapidly reduced in a short time, the controller can respond more quickly through adjustment of the control parameters, namely the control parameters are matched with the wind speed change, the overlarge fluctuation of the rotating speed of the generator can be effectively reduced, the operation stability of the unit is improved, and the problems of generating capacity loss and the like caused by triggering the overspeed fault of the unit are avoided.
It is noted that, herein, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In sum, other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A method of controlling a wind turbine, the method comprising:
when the generator is determined to be in a specified running state, acquiring generator rotating speed data of the generator;
judging whether the rotation speed change of the generator meets a preset condition or not based on the rotation speed data of the generator;
if yes, adjusting the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient.
2. The method of claim 1, wherein adjusting the proportional gain factor of the controller of the generator to a target proportional gain factor comprises:
determining a target coefficient;
determining the target proportional gain coefficient based on the proportional gain coefficient and the target coefficient;
wherein the target proportional gain coefficient and the proportional gain coefficient are in a linear relationship.
3. The method of claim 2, wherein determining the target scaling gain factor based on the scaling gain factor and the target factor comprises:
determining the target proportional gain coefficient K based on the following formulap：
Kp＝Kp0(1+a)；
Wherein, Kp0Representing the proportional gain coefficient, a representing the target coefficient, 0 < a < 0.1.
4. The method of claim 1, wherein the determining that the generator is in a specified operating state comprises:
calculating the average generator rotating speed and the average output power of the generator within a preset time length;
when the average generator rotating speed is greater than or equal to a first specified rotating speed and the average output power is less than or equal to specified power, determining that the generator is in the specified running state;
the first specified rotating speed is a product value of the maximum rotating speed of the generator and a rotating speed coefficient of the generator, and the value of the rotating speed coefficient is 0.85-0.95;
the specified power is a difference value obtained by subtracting a power margin from the rated power of the generator, and the value of the power margin is 20-80 kW.
5. The method of claim 1, wherein said obtaining generator speed data for said generator comprises:
acquiring a first generator rotating speed of the generator at the current moment and a second generator rotating speed of the generator at the last moment;
the judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps:
calculating a rotational speed difference between the rotational speed of the first generator and the rotational speed of the second generator;
when the rotating speed difference value is larger than zero and the rotating speed of the first generator is larger than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.
6. The method of claim 1, wherein said obtaining generator speed data for said generator comprises:
acquiring a plurality of generator rotating speeds of the generator within a preset time period, wherein the preset time period comprises the current moment;
the judging whether the rotation speed change of the generator meets the preset condition or not based on the generator rotation speed data comprises the following steps:
calculating an average rate of change of the plurality of generator speeds;
when the average change rate is greater than zero and the rotating speed of the generator corresponding to the current moment is greater than or equal to a second specified rotating speed, determining that the rotating speed change of the generator meets the preset condition; wherein the second specified rotating speed is 1.03-1.08 times of the maximum rotating speed of the generator.
7. The method according to any one of claims 1 to 6, further comprising:
judging whether the generator is in a yawing state or not;
and when the generator is not in a yawing state and the change of the rotating speed of the generator meets the preset condition, adjusting the proportional gain coefficient of a torque controller of the generator to the target proportional gain coefficient.
8. A control device of a wind power generator is characterized in that,
the data acquisition module is used for acquiring the generator rotating speed data of the generator when the generator is determined to be in the specified running state;
the rotating speed judging module is used for judging whether the rotating speed change of the generator meets a preset condition or not based on the rotating speed data of the generator;
and the control and regulation module is used for regulating the proportional gain coefficient of the controller of the generator to a target proportional gain coefficient if the judgment result of the rotating speed judgment module is positive.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the wind turbine control method according to any one of claims 1 to 7.
10. An electronic device, comprising:
a memory having a computer program stored thereon;
a processor for implementing the wind turbine control method of any of claims 1 to 7 when executing the computer program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111425163.0A CN114294162A (en) | 2021-11-26 | 2021-11-26 | Wind driven generator control method and device, storage medium and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111425163.0A CN114294162A (en) | 2021-11-26 | 2021-11-26 | Wind driven generator control method and device, storage medium and electronic equipment |
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| Publication Number | Publication Date |
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| CN114294162A true CN114294162A (en) | 2022-04-08 |
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|---|---|---|---|
| CN202111425163.0A Pending CN114294162A (en) | 2021-11-26 | 2021-11-26 | Wind driven generator control method and device, storage medium and electronic equipment |
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| Country | Link |
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| CN (1) | CN114294162A (en) |
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