CN115112920A - Correction method for flow field energy capture direction and flow field energy capture conversion equipment - Google Patents
Correction method for flow field energy capture direction and flow field energy capture conversion equipment Download PDFInfo
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Abstract
The application provides a correction method of a flow field energy capture direction, a computer-readable storage medium, a correction system of the flow field energy capture direction and a flow field energy capture conversion device. The correction method of the flow field energy direction comprises the following steps: and acquiring a detection value of a monitored parameter in the change process of the flow field energy direction and a detection value of the flow field energy direction, wherein the monitored parameter comprises a flow field related parameter and/or an operation parameter of flow field energy capturing and converting equipment for capturing the flow field energy and converting the flow field energy. And determining a compensation value according to the detection value of the monitored parameter. The compensation value is utilized to compensate the detection value of the flow field energy direction, so that the problem that the detection value of the flow field energy direction has deviation with the actual value of the maximum direction of the actual flow field energy can be effectively solved, the determined direction of the flow field energy is more accurate, and the energy conversion efficiency of the flow field energy capturing and converting equipment can be improved.
Description
Technical Field
The present disclosure relates to the field of natural flow field energy conversion technologies, and in particular, to a method for correcting a flow field energy capture direction, a computer-readable storage medium, a system for correcting a flow field energy capture direction, and a flow field energy capture and conversion device.
Background
With the deep understanding of the application and deterioration environment of fossil energy, the clean conversion of natural flow field energy and the progress of a novel clean energy development technology, more and more clean new energy is developed and utilized and becomes an important pillar of an energy structure. In a clean energy architecture, the acquisition and conversion application of natural flow field energy is a hot spot in the current energy field.
The conversion of the flow field energy is generally realized by a flow field energy capturing and converting device, and in order to improve the efficiency of energy capturing, the flow field energy capturing and converting device needs to align the direction of maximum energy tracking and capturing. The direction of maximum tracking capture is closely related to the vector direction of the real-time flow field state sensed by the energy capture and conversion equipment, and the direction of the maximum flow field energy can be aligned through the rotating component.
The starting of the rotating component is not continuous due to the fatigue of mechanical components and the random characteristics of the natural flow field, in a single instantaneous flow field direction sensing, the flow field direction has deviation from the actual energy capturing direction of the flow field energy capturing and converting equipment, the single deviation is represented as inherent static deviation by the statistical average of the single deviation, and the static deviation is represented as discretely distributed dynamic deviation around the static deviation. Wherein, the installation of detection part does not adopt calibration equipment, can have the deviation that installation error caused. The actual installation position of a detection component used by the traditional energy capture and conversion equipment is disturbed by a rotating flow field caused by a rotating component, so that random additional deviation between a measured value and an actual value can be generated, and is related to the natural terrain, the flow field direction and the like of each energy capture and conversion equipment, so that the random additional deviation is relatively complex. It can be seen that energy capture direction misalignment is a systematic problem that the prior art cannot effectively solve. And the existence of the misalignment problem of the energy capture direction leads to the reduction of the energy capture efficiency of the energy capture and conversion device.
Disclosure of Invention
The application provides a correction method of a flow field energy capturing direction, a computer readable storage medium, a correction system of the flow field energy capturing direction and a flow field energy capturing and converting device, which can improve the energy conversion efficiency of the flow field energy capturing and converting device.
The application provides a correction method of a flow field energy capture direction, which comprises the following steps:
acquiring a detection value of a monitored parameter in the flow field energy direction changing process and a detection value of the flow field energy direction, wherein the monitored parameter comprises a flow field related parameter and/or an operation parameter of flow field energy capturing and converting equipment for capturing and converting flow field energy;
determining a compensation value according to the detection value of the monitored parameter; and
and compensating the detection value of the flow field energy direction by using the compensation value.
Further, the flow field related parameters comprise one or more of flow field pressure, performance parameters of the flow field energy and environmental parameters influencing the flow field energy density;
the operation parameters of the flow field energy capture and conversion equipment comprise: at least one of a rotation speed of a rotating component of the flow field energy capturing and converting device, an energy conversion quantity parameter representing the conversion of the flow field energy and a variation parameter representing the variation of the energy conversion quantity.
Further, the determining a compensation value according to the detected value of the monitored parameter includes:
determining the maximum value of the characteristic quantity in the flow field energy direction change process according to the detected value of the monitored parameter in the flow field energy direction change process; and
and determining the compensation value according to the rotation angle of the rotating component of the flow field energy capturing and converting equipment corresponding to the maximum characteristic quantity and the rotation angle of the rotating component of the flow field energy capturing and converting equipment corresponding to the detection value of the flow field energy direction.
Further, the determining the maximum value of the feature quantity in the flow field energy direction change process includes:
extracting characteristic quantity from the detected value of the monitored parameter acquired in the process of rotating the capture direction change set value every time the rotating component of the flow field energy capture and conversion equipment rotates the capture direction change set value;
determining a maximum value among a plurality of characteristic quantities during a plurality of rotations of the capturing direction change set value as the maximum value of the characteristic quantity during the current flow field energy direction change.
Further, the determining a compensation value according to the detected value of the monitored parameter includes:
respectively determining a plurality of sub-compensation values corresponding to a plurality of flow field energy direction changing processes according to the detected values of the monitored parameters in the plurality of flow field energy direction changing processes; and
and determining the average value of the plurality of sub compensation values to obtain the compensation value.
Further, after the compensating the detected value of the flow field energy direction by using the compensation value, the method further comprises:
determining a variation characteristic quantity representing variation conditions of a compensated energy conversion quantity and an uncompensated energy conversion quantity in a set period under the same working condition, wherein the compensated energy conversion quantity is an energy conversion quantity generated by the flow field energy capture and conversion equipment operating according to a compensated value of a detection value of the flow field energy direction, and the uncompensated energy conversion quantity is an energy conversion quantity generated by the flow field energy capture and conversion equipment operating according to the detection value of the flow field energy direction; and
and if the change characteristic quantity of at least one set period is smaller than a change threshold, re-determining a compensation value.
Further, after determining a compensation value according to the detected value of the monitored parameter, the method further comprises:
correspondingly storing the compensation value and the working condition grade in the flow field energy direction change process;
determining the working condition grade of the actual working condition in the stored flow field energy direction change process, and acquiring the stored compensation value corresponding to the working condition grade; and
and according to the stored compensation value, compensating the detection value of the flow field energy direction in the flow field energy direction change process after storage.
Further, the working condition grade is set according to one or more of the size of the performance parameter of the flow field energy, the size of the environmental parameter influencing the flow field energy density and the flow field orientation parameter.
The present application provides a computer-readable storage medium, on which a program is stored, which, when executed by a processor, implements the method for correcting the energy capture direction of a flow field according to any one of the above embodiments.
The present application provides a system for correcting an energy capture direction of a flow field, which includes one or more processors, and is configured to implement the method for correcting an energy capture direction of a flow field according to any of the above embodiments.
The application provides a flow field energy capture conversion equipment, including:
the device body is used for capturing and converting flow field energy and comprises a rotating component rotating along with the change of the flow field energy direction;
the detection component is arranged on the equipment main body and used for monitoring the monitored parameter and the flow field energy direction in the flow field energy direction change process and generating a detection value of the monitored parameter and a detection value of the flow field energy direction; and
the system for correcting the energy capture direction of the flow field according to the above embodiment is connected to the detection component.
The correction method for the flow field energy capturing direction provided by the embodiment of the application can effectively solve the problem that the detection value of the flow field energy direction has deviation from the actual value of the maximum direction of the actual flow field energy, so that the determined direction with the maximum flow field energy is more accurate, and the energy conversion efficiency of the flow field energy capturing and converting equipment can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a flow chart illustrating a method for correcting an energy capture direction of a flow field according to an exemplary embodiment of the present application;
FIG. 2 is a first sub-flow diagram of a method of correcting the energy capture direction of the flow field shown in FIG. 1;
FIG. 3 is a second sub-flow chart of a method of correcting the energy capture direction of the flow field shown in FIG. 1;
FIG. 4 is a third sub-flow chart of a method of correcting the energy capture direction of the flow field shown in FIG. 1;
FIG. 5 is a flow chart illustrating a method for correcting the energy capture direction of a flow field according to another exemplary embodiment of the present application;
FIG. 6 is a flow chart illustrating a method for correcting the energy capture direction of a flow field according to another exemplary embodiment of the present application;
fig. 7 is a schematic structural diagram of a flow field energy capture and conversion device according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like, as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
A method for correcting a flow field energy capture direction, a computer-readable storage medium, a system for correcting a flow field energy capture direction, and a flow field energy capture conversion device according to embodiments of the present application will be described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.
Fig. 1 is a flowchart illustrating a method for correcting an energy capture direction of a flow field according to an exemplary embodiment of the present application. Referring to fig. 1, an embodiment of the present application provides a method for correcting a flow field energy capture direction, where the method for correcting the flow field energy capture direction may be applied to a flow field energy capture and conversion device such as a wind turbine generator, an ocean current generator, and the like. In the present embodiment, a method for correcting the energy capture direction of the flow field is described as an example of a wind turbine. The correction method of the flow field energy capture direction may include steps S101 to S103.
In step S101, a detected value of the monitored parameter during the flow field energy direction change process and a detected value of the flow field energy direction are obtained.
The detection value of the flow field energy direction can be represented by a deviation angle of the opposite direction of the flow coming from the flow field relative to the direction of the current energy capturing and converting equipment; the direction of the incoming flow of the flow field can refer to the direction of wind blowing, the direction of the current of the ocean and the like. The change of the flow field energy direction can be caused by the action of a deviation component of the flow field energy capturing and converting device and/or the change of the flow direction of the flow field energy. The monitored parameters comprise flow field related parameters and/or operation parameters of a flow field energy capturing and converting device for capturing and converting flow field energy. The flow field related parameters may refer to flow field self parameters such as flow field pressure, flow field energy expression parameters, and the like, or may refer to environmental parameters that may affect the flow field such as environmental parameters that affect the flow field energy density. The flow field energy capturing and converting device can be used for capturing and converting flow field energy, for example, the flow field energy capturing and converting device can capture wind energy and convert the wind energy into electric energy. The operation parameters of the flow field energy capturing and converting device may refer to energy conversion quantity parameters for converting the flow field energy, variation parameters representing the energy conversion quantity variation, and other energy conversion related parameters, and may also refer to parameters that may affect the flow field energy capturing and converting, such as the rotation speed of the rotating component of the flow field energy capturing and converting device. The rotating component rotates to capture the energy of the conversion flow field. When the flow field energy capturing and converting equipment is a wind driven generator, the rotating part is a wind wheel of the wind driven generator. In some alternative embodiments, the flow field related parameter includes one or more of a pressure of the flow field, a performance parameter of the flow field energy, and an environmental parameter affecting the energy density of the flow field. In this embodiment, the flow field pressure may refer to wind pressure; the performance parameter of the flow field energy can refer to wind speed and/or wind direction; the environmental parameter affecting the energy density of the flow field may be referred to as air temperature. The flow field pressure can be obtained by a multi-directional fluid pressure measuring device, and the pressure of wind acting on the wind wheel surface can be detected by the multi-directional fluid pressure measuring device, so that the detection value of the flow field pressure is determined. Optionally, the multi-directional fluid pressure measuring device may detect the pressure applied to the wind wheel surface by the wind in each direction. The performance parameter of the flow field energy can be measured by a wind meter and a multi-directional fluid pressure measuring device so as to obtain a detection value of the performance parameter of the flow field energy. Alternatively, the detected value of the performance parameter of the flow field energy can be set to be the average wind speed within 30s and/or the average wind direction within 10 s. The environmental parameters influencing the flow field energy density can be measured by a temperature sensor, the temperature outside the engine room can be measured by the temperature sensor, and the detection value of the environmental parameters influencing the flow field energy density is determined. The operation parameters of the flow field energy capture and conversion equipment comprise: the flow field energy capturing and converting device comprises at least one of a rotating speed of a rotating component of the flow field energy capturing and converting device, a blade load representing stress borne by the impeller, an energy conversion quantity parameter representing conversion of flow field energy and a variation parameter representing variation of the energy conversion quantity. In this embodiment, the rotation speed of the rotating member may refer to the rotation speed of the wind rotor in the wind turbine; the energy conversion quantity parameter can refer to the conversion quantity of wind energy converted into electric energy; the energy conversion quantity change parameter can refer to the change rate of the conversion quantity of wind energy converted into electric energy. The value of the rotating speed of the rotating component can be obtained by detecting the real-time rotating speed of the wind wheel; blade loads may be detected by strain gauge sensors; the value of the conversion quantity of the flow field energy can be obtained by detecting the real-time power generation power of the wind driven generator; the value of the energy conversion amount variation parameter may be obtained by determining a generation power variation rate of the wind turbine. In some alternative embodiments, the flow field related parameter comprises a flow field pressure, which may be indicative of the flow field related parameter; the operation parameters of the flow field energy capturing and converting device comprise the rotating speed of a rotating part of the flow field energy capturing and converting device, and the rotating speed of the rotating part of the energy capturing and converting device can represent the operation parameters of the flow field energy capturing and converting device.
The detection value of the flow field energy direction described above may refer to the direction of the flow field energy detected by the detection part of the flow field energy capturing and converting device. In this embodiment, the flow field energy direction refers to a relative wind direction, and when the wind wheel is opposite to the flow field direction, the flow field energy captured by the flow field energy capturing and converting device is the largest, and the energy conversion efficiency of the flow field energy capturing and converting device is the highest. And a detection value of the flow field energy direction can be obtained through the anemometer.
In step S102, a compensation value is determined based on the detected value of the monitored parameter. In the related technology, a detection component of the flow field energy capturing and converting device is affected by related factors such as a rotating flow field disturbance caused by a rotating component, a natural terrain where the flow field energy capturing and converting device is located, a flow field direction and the like, so that a detection value of the flow field energy direction has a certain deviation from an actual value. The compensation value may be determined by detecting a detected value of the monitored parameter.
In step S103, the detected value of the flow field energy direction is compensated for by the compensation value. As described above, according to the detected value of the monitored parameter, a compensation value is determined, and the detected value of the flow field energy direction can be compensated by using the compensation value, so that the determined direction of the flow field energy with the maximum energy is more accurate, and the energy conversion efficiency of the flow field energy capturing and converting device can be improved.
The embodiment of the application provides a correction method for a flow field energy capturing direction, which can effectively solve the problem that a detection value and an actual value of the flow field energy direction have deviation, so that the determined direction with the maximum flow field energy is more accurate, and the energy conversion efficiency of flow field energy capturing and converting equipment can be improved. Compared with the application of advanced detection components which are less affected by the outside, the method and the device need to adjust and calibrate the flow field energy capturing and converting equipment provided with the detection components, extra cost investment of a precision measuring instrument is not needed, the detection values can be automatically acquired and compensated in the operation process of the flow field energy capturing and converting equipment, and the working efficiency of the energy capturing and converting equipment is improved.
Fig. 2 is a sub-flowchart of step S102 shown in fig. 1. Referring to fig. 2, in some alternative embodiments, the step S102 of determining a compensation value according to the detected value of the monitored parameter may further include steps S201 to S202.
In step S201, a maximum value of the feature quantity in the flow field energy direction change process is determined according to the detected value of the monitored parameter in the flow field energy direction change process. In the secondary flow field energy direction changing process, every time a set value β is changed (β may be set to 1 °), the feature quantity η may be extracted according to the detected value of the monitored parameter, as in expression (1):
Δx i ＝x i /x io -1、Δw j ＝w j /w jo -1, wherein x i 、w j Is the detected value, x, of the monitored parameter during the change of the energy direction of the flow field io 、w jo Is the detected value of the monitored parameter before the energy direction of the flow field changes this time. c. C i And d j And setting the influence degree of the monitored parameters on the detection value of the flow field energy direction for the influence primer of the monitored parameters. Setting a condition factor y for representing the initiation reason of the change of the flow field energy direction en When the deflection component of the flow field energy capture and conversion device acts, y en 1, otherwise y en 0. In some optional embodiments, the flow field related parameters include performance parameters of flow field pressure and flow field energy; operation of flow field energy capture and conversion equipmentThe row parameters include energy conversion quantity parameters characterizing the conversion of the flow field energy. Wherein x is 1 Is the pressure of the flow field, x 2 Parameter of conversion of flow field energy, w 1 、w 2 Representing the flow field energy. In some embodiments, the impact factor c 1 ＝0.7，c 2 ＝0.3，d 1 ＝0.9，d 2 ＝0.1，α＝0.5。
And determining the maximum value of the characteristic quantity in the flow field energy direction change process, namely selecting the maximum value for a plurality of characteristic quantities determined in the flow field energy capture direction change process each time. Optionally, the value of the maximum value of the characteristic quantity preferentially ensures that the working condition in the process of capturing the flow field energy and changing the direction has stability every time, and if the working condition suddenly changes in the process of changing the flow field energy and the direction, the maximum value of the characteristic quantity in the process of changing the flow field energy and the direction is not considered.
Fig. 3 is a sub-flowchart of step S201 shown in fig. 2. Referring to fig. 3, in some alternative embodiments, the step S201 of determining the maximum value of the feature quantity in the process of the energy direction change of the flow field may further include steps S301 to S302:
in step S301, every time a rotating member of the flow field energy capture and conversion device rotates to capture a direction change set value, a feature quantity is extracted from a detected value of a monitored parameter acquired during the rotation to capture the direction change set value. Wherein the direction in which the flow field energy is maximized can be aligned by rotation of the rotating member. When the flow field energy capturing and converting equipment is a wind driven generator, the rotating part is an engine room of the wind driven generator, and the engine room can rotate through the deviation part, so that a wind wheel of the wind driven generator, namely the rotating part is opposite to the direction with the largest flow field energy. In each flow field energy direction change process, when a rotating component of the flow field energy capturing and converting equipment passes through a rotating capturing direction change set value, a characteristic quantity eta is extracted from a detected value of a monitored parameter collected in the rotating capturing direction change set value process, and the characteristic quantity eta is extracted according to an expression (1). The capture direction change set value is less than the total change value of the energy direction change of the flow field. And in the process of changing the flow field energy direction for one time, capturing a direction change set value when the flow field energy direction changes, acquiring a detection value of a monitored parameter and extracting a characteristic quantity eta.
In step S302, the maximum value of the plurality of feature quantities during the multiple rotation capturing direction change set values is determined as the feature quantity maximum value during the current flow field energy direction change. The detection value of the monitored parameter in the process of capturing the direction change set value by rotation each time can be acquired, and the characteristic quantity eta is extracted from the detection value of the monitored parameter acquired in the process of capturing the direction change set value by rotation each time. Determining the maximum value of the characteristic quantity in the current flow field energy direction change process by determining the maximum value of a plurality of characteristic quantities eta in the process of capturing the direction change set value through multiple rotations, thereby determining the eta which is equal to the eta in each flow field energy direction change process max The position of the rotating component of the flow field energy capturing and converting equipment is determined, so that the position with the highest energy conversion efficiency of the energy capturing and converting equipment is more accurate, and the obtained compensation value result is more accurate.
Returning to fig. 2, in step S202, a compensation value is determined according to the rotation angle of the rotating component of the flow field energy capturing and converting device corresponding to the maximum value of the characteristic quantity and the rotation angle of the rotating component of the flow field energy capturing and converting device corresponding to the detected value of the flow field energy direction. I.e. determining eta ═ eta max The position phi of a rotating part of the time flow field energy capture and conversion equipment is fine (phi) ηmax And a position theta of a rotating member of the flow field energy capturing and converting device corresponding to the detected value of the flow field energy direction ot Determining a compensation value delta phi during the change of the energy capture direction, wherein delta phi is phi-theta ot . This allows the compensation value to be determined from the detected values of the monitored parameter during the change in the flow field energy direction.
In some optional embodiments, obtaining the detected value of the monitored parameter during the energy direction change of the flow field comprises: and acquiring the detection values of the monitored parameters which are not less than the set number. The detected value of the monitored parameter is more, so that the method can ensureThe accuracy of the determined compensation value. In this embodiment, the upper limit value D of the number is preset in the system M By checking whether the number of detected values of the monitored parameter reaches a set upper limit value D M And the detection result is used as a basis for judging whether the detection value of the monitored parameter is finished or not in the process of acquiring the change of the flow field energy direction. Wherein, the upper limit value D of the number M The method can be set according to the number of detected values of the monitored parameters in the process of changing the flow field energy direction within one month or two months. If the number of the detected values of the monitored parameters in the first flow field energy direction change process does not reach the upper limit value D of the number M Continuously collecting the detection values of the monitored parameters in the second flow field energy direction change process, and collecting the detection values of the monitored parameters in the two or more flow field energy direction change processes until the total number of the detection values of the monitored parameters reaches the upper limit value D of the number M . And determining a compensation value in the flow field energy direction change process according to the maximum value of the characteristic quantity in the multiple flow field energy capture direction change processes.
Fig. 4 is a sub-flowchart of step S102 shown in fig. 1. Referring to fig. 4, in some alternative embodiments, the step S102 of determining the compensation value according to the detected value of the monitored parameter may further include steps S401 to S402:
in step S401, a plurality of sub-compensation values corresponding to a plurality of flow field energy direction change processes are respectively determined according to the detected values of the monitored parameters in the plurality of flow field energy direction change processes. For example, a first sub-compensation value delta phi in the first time flow field direction change process is determined according to the detected value of the monitored parameter in the first time flow field energy direction change process 1 Determining a second sub-compensation value delta phi in the second time flow field direction change process according to the detected value of the monitored parameter in the second time flow field energy direction change process 2 … …, determining the Nth sub-compensation value delta phi in the Nth flow field direction change process according to the detection value of the monitored parameter in the Nth flow field energy direction change process N 。
In step S402, an average value of the plurality of sub compensation values is determined, resulting in a compensation value. By usingAt the corrected compensation value delta phi opt Taking the average of a plurality of sub-compensation values, i.e.
Where the average of the sub-compensation values with absolute value > 1 is taken, it can be understood that |. DELTA.φ 1 |＞1、|Δφ 2 |＞1…|Δφ N |>1, the sub compensation values near the 0 value can be eliminated, so that the obtained compensation value is more accurate. The compensation value obtained in the way is the average value of the plurality of sub-compensation values, the detection value of the monitored parameter in the multiple flow field energy direction change process is utilized, the concentration trend of the change of the detection value of the monitored parameter in the multiple flow field energy direction change process under the same working condition is reflected, and the determination of the compensation value is more accurate.
Fig. 5 is a flowchart illustrating a method for correcting an energy capture direction of a flow field according to another exemplary embodiment of the present application. Referring to fig. 5, in some alternative embodiments, after compensating the detected value of the flow field energy direction by using the compensation value, the method further includes steps S104 to S105:
in step S104, a variation characteristic quantity is determined, which represents a variation of a compensated energy conversion quantity and an uncompensated energy conversion quantity in a set period under the same working condition, where the compensated energy conversion quantity is an energy conversion quantity generated by the flow field energy capture conversion device operating according to the compensated value of the detected value of the flow field energy direction, and the uncompensated energy conversion quantity is an energy conversion quantity generated by the flow field energy capture conversion device operating according to the detected value of the flow field energy direction. In the present embodiment, the above-mentioned situation is explained in detail, and the variation characteristic amount λ, which represents the variation of the compensated energy conversion amount and the uncompensated energy conversion amount in the set period under the same operating condition, is (β - β ')/max (β ', 0.1), where β is the compensated energy conversion amount in the set period and β ' is the uncompensated energy conversion amount in the set period.
In step 105, if the variation characteristic amount of at least one set period is smaller than the variation threshold, the compensation value is determined again. If the variation characteristic quantity of at least one set period is smaller than the variation threshold, the process returns to step S102, a new compensation value is determined again, and the detection value of the flow field energy direction is compensated by using the new compensation value. The method of re-determining the compensation value and compensating with the new compensation value is the same as the method described above. The at least one setting period may be one setting period, two setting periods, or more setting periods, and the application is not particularly limited. The threshold of variation may take 0.01. The smaller the change characteristic quantity is, the closer the compensated energy conversion quantity is to the uncompensated energy conversion quantity value, the worse the energy conversion quantity effect is, and the compensation effect of the detection value of the flow field energy direction can be determined by judging the relation between the change characteristic quantity and the change threshold value. Therefore, the compensation value of the flow field energy capturing and converting equipment can be continuously corrected, and the energy conversion efficiency of the flow field energy capturing and converting equipment is higher.
Fig. 6 is a flowchart illustrating a method for correcting an energy capture direction of a flow field according to another exemplary embodiment of the present application. Referring to fig. 6, in some alternative embodiments, after determining the compensation value according to the detected value of the monitored parameter, the method for correcting the energy capture direction of the flow field further includes steps S501 to S503:
in step S501, the compensation value is stored corresponding to the operating condition level during the change of the flow field energy direction. And determining the working condition grade of the current flow field in the energy direction change process, and recording a compensation value corresponding to the working condition grade so as to store the compensation value and the working condition grade in a one-to-one correspondence manner. In some optional embodiments, the operating condition level is set according to one or more of the size of an expression parameter of the flow field energy, the size of an environmental parameter affecting the flow field energy density, and the flow field orientation parameter, and since the setting position of the energy capture and conversion device is unchanged, the detection value of the flow field energy direction is mainly affected by the flow field related parameter, for example, the flow field self parameter may affect the flow field environmental parameter. Thus, working condition levels are set according to one or more of the expression parameter size of the flow field energy, the environmental parameter size influencing the flow field energy density and the flow field azimuth parameter, although the number of the parameters of the set working condition levels is small, the compensation value can be well limited, and therefore when the compensation value is determined according to the working condition levels, the accuracy of the determined compensation value is higher.
The magnitude S of the expression parameter is based on the flow field energy according to the working condition grade i And the size K of the environmental parameter influencing the energy density of the flow field j The two are set as examples for explanation: setting different working condition grades for each parameter in a grading way, and representing parameter size S of flow field energy i Different working condition grades are set in a grading way: s 1 、S 2 、…、S N (ii) a To the environmental parameter K influencing the flow field energy density j Different working condition grades are set in a grading way: k 1 、K 2 、…、K N . The compensation value and the corresponding flow field energy can be expressed by a parameter S i And the size K of the environmental parameter influencing the energy density of the flow field j And (4) establishing and forming a database according to the working condition level. For example: the database includes:
| K 1 | K 2 | … | K N | |
| S 1 | Δφ opt11 | Δφ opt12 | … | Δφ opt1N |
| S 2 | Δφ opt21 | Δφ opt22 | … | Δφ opt2N |
| … | … | … | … | … |
| S N | Δφ optN1 | Δφ optN2 | … | Δφ optNN |
in step S502, the operating condition level of the actual operating condition in the stored flow field energy direction changing process is determined, and the stored compensation value corresponding to the operating condition level is obtained. Determining the working condition grade of the actual working condition in the flow field energy direction change process after storage, for example: size S of flow field energy expression parameter i In a working condition of class S 1 (ii) a Environmental parameter K influencing flow field energy density j In a working condition of class K N If the working condition grade of the actual working condition can be determined, the stored compensation value delta phi corresponding to the working condition grade is directly obtained opt1N 。
In step S503, the detected value of the flow field energy direction in the flow field energy direction changing process after the saving is compensated according to the saved compensation value. As described above, the detected value of the flow field energy direction is compensated based on the stored compensation value. The method has the advantages of making the determination of the compensation value simpler and faster, reducing the calculation amount and saving the time, thereby improving the energy conversion efficiency of the flow field energy capturing and converting equipment.
The present application also provides a computer-readable storage medium, on which a program is stored, and when the program is executed by a processor, the method for correcting the flow field energy capture direction according to any of the above embodiments can be implemented. The computer-readable storage medium may include: various media capable of storing codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, which are not limited in the present application.
The present application provides a correction system for a flow field energy capture direction, which includes one or more processors, and the processors can call a program in the correction system for a flow field energy capture direction, so as to implement the correction method for a flow field energy capture direction described in any of the above embodiments. The processor may be a central processing unit, an application specific integrated circuit, a digital signal processor, or other devices, and is not limited in this application.
Fig. 7 is a schematic structural diagram of a flow field energy capture and conversion device according to an exemplary embodiment of the present application. Referring to fig. 7, the present application provides a flow field energy capturing and converting apparatus 100, where the flow field energy capturing and converting apparatus 100 may be a wind power generator, or an ocean current generator, and the present application is not limited thereto, and fig. 7 shows a case where the flow field energy capturing and converting apparatus 100 is a wind power generator. The flow field energy capture conversion device 100 includes a device body 10, a detection member 20, and a correction system 30 of the flow field energy capture direction.
The device body 10 is used for capturing and converting flow field energy, and comprises a rotating component 11 rotating along with the direction change of the flow field energy, wherein the rotating component 11 can be a cabin. In some alternative embodiments, the apparatus body comprises a wind wheel 12, the wind wheel 12 being arranged at one end of the rotating part 11.
The detection component 20 is disposed on the main body 10 and is configured to monitor the monitored parameter and the flow field energy direction during the flow field energy direction change process, and generate a detected value of the monitored parameter and a detected value of the flow field energy direction. A calibration system 30 for the direction of energy capture in the flow field is connected to the sensing component 20. The detected value of the monitored parameter and the detected value of the flow field energy direction can be determined by the detection section 20. The problem that a detected value of the flow field energy direction deviates from an actual value of the maximum direction of the actual flow field energy can be effectively solved, so that the wind wheel 12 of the rotating component 11 is over against the flow field direction, the flow field energy captured by the flow field energy capturing and converting device 100 is maximum, the energy conversion efficiency of the flow field energy capturing and converting device 100 is highest, and meanwhile, the fatigue stress of the rotating component 11 is reduced.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (11)
1. A method for correcting the energy capture direction of a flow field is characterized by comprising the following steps:
acquiring a detection value of a monitored parameter in the flow field energy direction changing process and a detection value of the flow field energy direction, wherein the monitored parameter comprises a flow field related parameter and/or an operation parameter of flow field energy capturing and converting equipment for capturing and converting flow field energy;
determining a compensation value according to the detection value of the monitored parameter; and
and compensating the detection value of the flow field energy direction by using the compensation value.
2. The method for correcting the energy capture direction of the flow field according to claim 1, wherein the flow field related parameters comprise one or more of flow field pressure, performance parameters of the flow field energy, and environmental parameters affecting the energy density of the flow field;
the operation parameters of the flow field energy capture and conversion equipment comprise: the flow field energy capturing and converting device comprises at least one of a rotating speed of a rotating part of the flow field energy capturing and converting device, a blade load representing stress borne by an impeller, an energy conversion quantity parameter representing conversion of the flow field energy and a variation parameter representing variation of the energy conversion quantity.
3. The method for correcting the energy capture direction of a flow field according to claim 1, wherein said determining a compensation value based on the detected value of the monitored parameter comprises:
determining the maximum value of the characteristic quantity in the flow field energy direction change process according to the detected value of the monitored parameter in the flow field energy direction change process; and
and determining the compensation value according to the rotation angle of the rotating component of the flow field energy capturing and converting equipment corresponding to the maximum characteristic quantity and the rotation angle of the rotating component of the flow field energy capturing and converting equipment corresponding to the detection value of the flow field energy direction.
4. The method for correcting the energy capture direction of the flow field according to claim 3, wherein the determining the maximum value of the characteristic quantity in the process of the change of the energy direction of the flow field comprises:
extracting characteristic quantity from the detected value of the monitored parameter acquired in the process of rotating the capture direction change set value every time the rotating component of the flow field energy capture and conversion equipment rotates the capture direction change set value;
determining a maximum value of the plurality of characteristic quantities during the plurality of rotations of the capturing direction change set value as the maximum value of the characteristic quantity during the current flow field energy direction change.
5. The method for correcting the energy capture direction of a flow field according to claim 1, wherein said determining a compensation value based on the detected value of the monitored parameter comprises:
respectively determining a plurality of sub-compensation values corresponding to a plurality of flow field energy direction changing processes according to the detected values of the monitored parameters in the plurality of flow field energy direction changing processes; and
and determining the average value of the plurality of sub compensation values to obtain the compensation value.
6. The method for correcting the energy capture direction of a flow field according to claim 1, wherein after said compensating the detected value of the energy direction of the flow field with the compensation value, the method further comprises:
determining a variation characteristic quantity representing variation conditions of a compensated energy conversion quantity and an uncompensated energy conversion quantity in a set period under the same working condition, wherein the compensated energy conversion quantity is an energy conversion quantity generated by the flow field energy capture and conversion equipment operating according to a compensated value of a detection value of the flow field energy direction, and the uncompensated energy conversion quantity is an energy conversion quantity generated by the flow field energy capture and conversion equipment operating according to the detection value of the flow field energy direction; and
and if the change characteristic quantity of at least one set period is smaller than a change threshold, re-determining a compensation value.
7. The method for correcting the energy capture direction of a flow field according to claim 1, wherein after determining a compensation value based on the detected value of the monitored parameter, the method further comprises:
correspondingly storing the compensation value and the working condition grade in the flow field energy direction change process;
determining the working condition grade of the actual working condition in the stored flow field energy direction change process, and acquiring the stored compensation value corresponding to the working condition grade; and
and according to the stored compensation value, compensating the detection value of the flow field energy direction in the flow field energy direction change process after storage.
8. The method for correcting the energy capture direction of the flow field according to claim 7, wherein the operating condition level is set according to one or more of the size of an expression parameter of the flow field energy, the size of an environmental parameter affecting the energy density of the flow field, and an orientation parameter of the flow field.
9. A computer-readable storage medium, characterized in that a program is stored thereon, which when executed by a processor, implements the correction method of the flow field energy capturing direction according to any one of claims 1 to 8.
10. A system for correcting the energy capture direction of a flow field, comprising one or more processors configured to implement the method for correcting the energy capture direction of a flow field according to any one of claims 1 to 8.
11. A flow field energy capture conversion apparatus, comprising:
the device body is used for capturing and converting flow field energy and comprises a rotating component rotating along with the change of the flow field energy direction;
the detection component is arranged on the equipment main body and used for monitoring the monitored parameter and the flow field energy direction in the flow field energy direction change process and generating a detection value of the monitored parameter and a detection value of the flow field energy direction; and
the system for correcting for energy capture direction in a flow field of claim 10, coupled to the sensing component.
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| CN202210692454.4A CN115112920A (en) | 2022-06-17 | 2022-06-17 | Correction method for flow field energy capture direction and flow field energy capture conversion equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210692454.4A CN115112920A (en) | 2022-06-17 | 2022-06-17 | Correction method for flow field energy capture direction and flow field energy capture conversion equipment |
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| CN115112920A true CN115112920A (en) | 2022-09-27 |
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