CN214247572U - Wind power generator - Google Patents

Abstract

The application provides a wind power generator, includes: a nacelle cover; the fan blade is positioned at the front end of the cabin cover and is arranged on the variable pitch mechanism; a tower barrel which is positioned below the cabin cover and supports the cabin cover, and the cabin cover is arranged on the yawing mechanism; the first anemorumbometer is positioned at the rear end of the cabin cover; the second anemorumbometer is arranged around the tower, and the position of the second anemorumbometer is lower than a wind sweeping area of the fan blades; an edge calculating device, a main controller, a variable pitch controller and a yaw controller are arranged in the engine room cover; the edge calculating device is electrically connected with the first anemorumbometer and each second anemorumbometer, receives anemorumbometer signals collected by each anemorumbometer, and outputs control signals according to power prediction; the main controller is electrically connected with the edge calculating device and used for receiving the control signal and controlling the variable pitch mechanism or the yaw mechanism to rotate. The method and the device can realize the control of the pitch or yaw or the integration of the pitch or the yaw into the power grid under the condition that the single machine predicts the short-term power.

Description

Wind power generator

Technical Field

The present disclosure relates to wind power generators, and more particularly, to a wind power generator capable of performing pitch control or yaw control based on short-term power prediction.

Background

The actual operating environment of the wind turbine generator is very different, and the temperature, the terrain and the altitude are different; the actual operating conditions of the wind turbine generator set also differ, including wind speed, air density, turbulence intensity, wind direction and the like; and individual performance differences also exist among each unit of the same wind power plant unit due to errors of design, manufacture, installation and the like.

At present, the same model basically adopts the same control strategy in the wind farm. With continuous progress and maturity of wind power technology, if the control strategy of the wind power generation set can be adjusted according to environmental difference, operation condition difference and individual performance difference of the set, the power generation potential of each set can be fully excavated, and remarkable economic and environmental benefits can be brought.

Therefore, how to provide a fan control based on short-term power prediction, such as pitch control and yaw control, suitable for a single fan, or whether the fan is incorporated into a power grid is a technical problem to be solved by the present invention.

Disclosure of Invention

In view of the above problems of the prior art, the present application provides a wind turbine to enable pitch control or yaw based on short term power prediction, or control incorporated into the grid.

To achieve the above object, the present application provides a wind power generator, comprising:

a nacelle cover;

the fan blade is positioned at the front end of the cabin cover, and the fan blade is arranged on the variable pitch mechanism;

a tower positioned below the nacelle cover to support the nacelle cover, wherein the nacelle cover is mounted on the yaw mechanism;

the first anemorumbometer is positioned at the rear end of the cabin cover;

at least three second anemorumbometers are arranged around the tower, and the positions of the second anemorumbometers are positioned below a wind sweeping area of the fan blades;

wherein, an edge calculating device, a main controller, a variable pitch controller and a yaw controller are arranged in the cabin cover;

the edge calculating device is electrically connected with the first anemorumbometer and each second anemorumbometer, receives anemorumbometer signals collected by each anemorumbometer, and outputs control signals according to power prediction;

the main controller is electrically connected with the edge computing device and used for receiving the control signal and controlling the pitch variation mechanism electrically connected with the main controller or controlling the yaw mechanism electrically connected with the main controller to rotate.

Wherein, the edge computing device is an industrial personal computer. The edge computing device is also in communication connection with a server of a remote management center.

And the number of the second anemorumbometers is four.

Therefore, the method and the device are suitable for controlling the fan based on the short-term power prediction of the single fan, and variable pitch control or yaw control based on the short-term power prediction can be realized. Particularly, the wind speed and direction conditions around the fan can be obtained according to the second anemorumbometer on the fan tower, and the determined wind speed and direction around the fan can be obtained according to the average value. The four second anemorumbometers surrounding the tower barrel are adopted, the wind speed and the wind direction can be collected from all directions, the rotating influence of the fan blades is reduced, and the position of the wind speed and the wind direction is lower than the lower part of the fan blades, so that the rotating influence of the fan blades can be further reduced. And further collecting the wind speed and the wind direction influenced by the wind speed wake flow of the fan according to a first anemorumbometer at the rear end of the cabin cover, correcting the surrounding wind speed and the surrounding wind direction, and obtaining the wind speed and the wind direction related to the periphery of the fan, so that the power prediction is more related to the fan. Therefore, the method is particularly suitable for controlling the fan based on the short-term power prediction of the single fan, and can realize pitch control or yaw control or control of the wind turbine integrated into the power grid based on the short-term power prediction.

These and other aspects of the present application will be more readily apparent from the following description of the embodiment(s).

Drawings

The various features and the connections between the various features of the present application are further described below with reference to the drawings. The figures are exemplary, some features are not shown to scale, and some of the figures may omit features that are conventional in the art to which the application relates and are not essential to the application, or show additional features that are not essential to the application, and the combination of features shown in the figures is not intended to limit the application. In addition, the same reference numerals are used throughout the specification to designate the same components. The specific drawings are illustrated as follows:

FIG. 1 is a schematic view of a wind turbine according to the present application;

FIG. 2 is a schematic diagram of the wind turbine circuitry principle of the present application.

Detailed Description

The terms "first, second, third and the like" or "module a, module B, module C and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that specific orders or sequences may be interchanged where permissible to effect embodiments of the present application in other than those illustrated or described herein.

In the following description, reference to reference numerals indicating steps, such as S110, S120 … …, etc., does not necessarily indicate that the steps are performed in this order, and the order of the preceding and following steps may be interchanged or performed simultaneously, where permissible.

The term "comprising" as used in the specification and claims should not be construed as being limited to the contents listed thereafter; it does not exclude other elements or steps. It should therefore be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, and groups thereof. Thus, the expression "an apparatus comprising the devices a and B" should not be limited to an apparatus consisting of only the components a and B.

Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment, but may. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments, as would be apparent to one of ordinary skill in the art from this disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In the case of inconsistency, the meaning described in the present specification or the meaning derived from the content described in the present specification shall control. In addition, the terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.

To accurately describe the technical content in the present application and to accurately understand the present application, terms used in the present specification are given the following explanation or definition before describing the specific embodiments:

1) a variable pitch mechanism: the variable pitch mechanism controls the position angle of the fan blade relative to the rotating plane, and the variable pitch control enables the fan to obtain electric energy at low wind speed and capture wind energy with fixed size when the wind speed is higher than rated wind speed.

2) A yaw mechanism: also known as wind alignment devices, are part of the nacelle of a wind turbine and function to align the wind direction quickly and smoothly as the direction of the wind velocity vector changes, so that the blades achieve maximum wind energy.

Based on the technical problems mentioned in the background art, the application provides a wind driven generator which is suitable for fan control of a single fan under short-term power prediction. The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Fig. 1 and 2 show a wind power generator of the present application, including:

a nacelle cover 10;

three fan blades 11 positioned at the front end of the nacelle cover 10, wherein the fan blades 11 are mounted on a pitch-changing mechanism; the variable pitch mechanism is used for driving the pitch angle of the fan blade 11;

a tower 12 supporting the nacelle cover 10 below the nacelle cover 10, wherein the nacelle cover 10 is mounted on a yaw mechanism; the yaw mechanism is used to change the orientation of the nacelle cover 10;

a first anemorumbometer 21 positioned at the rear end of the nacelle cover 10, and four second anemorumbometers 22 arranged around the tower 12, wherein the positions of the second anemorumbometers 22 are lower than the lower part of a wind sweeping area of the fan blades 11;

wherein, an edge calculating device 30, a main controller 40, a pitch controller 50 and a yaw controller 60 are arranged in the nacelle cover 10;

the edge calculating device 30 is electrically connected with the first anemorumbometer 21 and the four second anemorumbometers 22, receives each collected anemorumbometer signal, performs power prediction according to the anemorumbometer signals at different positions, wherein the power prediction can be simply performed on the basis of adopting an average value of each anemorumbometer signal, and outputs a control signal; the main controller 40 is configured to receive the control signal and control the pitch controller 50 to control the pitch of the pitch mechanism, and the main controller 40 is further configured to receive the control signal and control the yaw controller 60 to control the yaw mechanism to rotate.

The edge computing device 30 may be implemented by an industrial personal computer, and the edge computing device 30 may further be in communication connection with a server of a remote management center to upload related information to the server or receive a control signal of the server.

The working principle of the wind power generator of the present application will be described in detail below

Therefore, the ambient wind speed and direction conditions of the fan can be obtained according to the four second anemorumbometers on the fan, and the determined ambient wind speed and direction of the fan can be obtained according to the average value. The four second anemorumbometers surrounding the tower barrel are adopted, the wind speed and the wind direction can be collected from all directions, the rotating influence of the fan blades is reduced, and the position of the wind speed and the wind direction is lower than the lower part of the fan blades, so that the rotating influence of the fan blades can be further reduced. And further collecting the wind speed and the wind direction influenced by the wind speed wake flow of the fan according to a first anemorumbometer at the rear end of the cabin cover, correcting the surrounding wind speed and the surrounding wind direction, and obtaining the wind speed and the wind direction related to the periphery of the fan, so that the power prediction is more related to the fan. Therefore, the method is particularly suitable for controlling the fan based on the short-term power prediction of the single fan, and can realize pitch control or yaw control or control of the wind turbine integrated into the power grid based on the short-term power prediction.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

It should be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application.

Claims (4)

1. A wind power generator, comprising:

a nacelle cover;

the fan blade is positioned at the front end of the cabin cover, and the fan blade is arranged on the variable pitch mechanism;

a tower positioned below the nacelle cover to support the nacelle cover, wherein the nacelle cover is mounted on the yaw mechanism;

the first anemorumbometer is positioned at the rear end of the cabin cover;

at least three second anemorumbometers are arranged around the tower, and the positions of the second anemorumbometers are positioned below a wind sweeping area of the fan blades;

wherein, an edge calculating device, a main controller, a variable pitch controller and a yaw controller are arranged in the cabin cover;

the edge calculating device is electrically connected with the first anemorumbometer and each second anemorumbometer, receives anemorumbometer signals collected by each anemorumbometer, and outputs control signals according to power prediction;

the main controller is electrically connected with the edge computing device and used for receiving the control signal and controlling the pitch variation mechanism electrically connected with the main controller or controlling the yaw mechanism electrically connected with the main controller to rotate.

2. The wind turbine of claim 1, wherein the edge computing device is an industrial personal computer.

3. The wind turbine of claim 1, wherein the edge computing device is further communicatively coupled to a server of a remote management center.

4. A wind generator according to claim 1, wherein the second anemoscope is four.

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