阅读说明：本技术 一种转速隔离区的调整方法、装置、存储介质及电子设备 (Adjusting method and device of rotating speed isolation area, storage medium and electronic equipment ) 是由 张硕望 黄凌翔 曹俊伟 杨先有 宋晓萍 于 2021-06-04 设计创作，主要内容包括：本申请提出一种转速隔离区的调整方法、装置、存储介质及电子设备,包括：获取在固定时间窗口内的穿越次数,其中,穿越次数为风力发电机组的轮毂转速穿越转速隔离区的次数；依据穿越次数和预设的次数区间确定调节比例；依据调节比例对转速隔离区的宽度进行调节。在获得调节比例后,对转速隔离区的宽度进行调节,隔离区的宽度表示最大风能跟踪曲线与风力发电机组转矩控制曲线未重合长度。通过调节转速隔离区可以减小发电量损失的同时,提升实施可靠性,从而在有效避免塔架共振的前提下减少发电量损失。(The application provides a method and a device for adjusting a rotating speed isolation area, a storage medium and electronic equipment, and the method comprises the following steps: acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region; determining an adjusting proportion according to the crossing times and a preset time interval; and adjusting the width of the rotating speed isolation region according to the adjusting proportion. And after the adjusting proportion is obtained, adjusting the width of the rotational speed isolation region, wherein the width of the isolation region represents the length of the maximum wind energy tracking curve which is not overlapped with the torque control curve of the wind generating set. The power generation loss can be reduced by adjusting the rotating speed isolation area, and meanwhile, the implementation reliability is improved, so that the power generation loss is reduced on the premise of effectively avoiding tower resonance.)

1. A method for adjusting a rotating speed isolation area is applied to electronic equipment, and the method comprises the following steps:

acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region;

determining an adjusting proportion according to the crossing times and a preset time interval;

and adjusting the width of the rotating speed isolation region according to the adjusting proportion.

2. The method for adjusting a rotational speed isolation region according to claim 1, wherein the adjustment ratio comprises a first adjustment ratio and a second adjustment ratio, and the step of determining the adjustment ratio according to the crossing times and the preset time interval comprises:

judging whether the crossing times are larger than a preset threshold upper limit, wherein the preset threshold upper limit is an upper limit of the time interval;

if so, determining the first regulation proportion according to the crossing times, the preset threshold upper limit and a preset threshold lower limit, wherein the preset threshold lower limit is the lower limit of the time interval;

the step of adjusting the width of the rotating speed isolation region according to the adjustment proportion comprises the following steps:

reducing the width of the rotating speed isolation region according to the first regulation proportion;

if the crossing times are not greater than the upper limit of the preset threshold, judging whether the crossing times are less than the lower limit of the preset threshold;

if so, determining the second regulation proportion according to the crossing times, the preset threshold upper limit and the preset threshold lower limit;

the step of adjusting the width of the rotating speed isolation region according to the adjustment proportion comprises the following steps:

and increasing the width of the rotating speed isolation region according to the second regulation proportion.

3. The method for adjusting a rotational speed isolation region according to claim 2, wherein the step of determining the adjustment ratio according to the crossing times and the preset time interval further comprises:

judging whether the first adjusting proportion is larger than a proportion threshold value, if so, taking the proportion threshold value as the first adjusting proportion;

or judging whether the second regulation proportion is larger than a proportion threshold value, and if so, taking the proportion threshold value as the second regulation proportion.

4. The method according to claim 2, wherein the rotational speed isolation region is formed by a plurality of steps,

determining an expression of the first adjustment ratio according to the crossing times, the preset upper threshold and the preset lower threshold as follows:

F_ac1＝(C_avg-C_max)/(C_max-C_min)；

determining an expression of the second adjustment ratio according to the crossing times, the preset upper threshold and the preset lower threshold as follows:

F_ac2＝(C_min-C_avg)/(C_max-C_min)；

wherein, F_ac1Characterizing said first regulation ratio, F_ac2Characterizing the second adjustment ratio, C_minCharacterizing the lower limit of the preset threshold, C_maxCharacterizing the upper limit of the preset threshold value, C_avgAnd characterizing the crossing times.

5. The method according to claim 2, wherein the rotational speed isolation region is formed by a plurality of steps,

when the crossing times are larger than the upper limit of the preset threshold, the expression for reducing the width of the rotating speed isolation region according to the first regulation proportion is as follows:

w_low＝w_low0×(1+F_ac1)；

w_up＝w_up0×(1-F_ac1)；

under the condition that the crossing times are smaller than the lower limit of a preset threshold, the expression for increasing the width of the rotating speed isolation region according to the second regulation proportion is as follows:

w_low＝w_low0×(1-F_ac2)；

w_up＝w_up0×(1+F_ac2)；

wherein, w_lowCharacterizing a new lower limit, w, of the rotational speed isolation region_upCharacterizing a new upper limit, w, of the rotational speed isolation region_low0Characterizing an original lower limit, w, of the rotational speed isolation region_up0Characterizing the original upper limit, F, of the rotational speed isolation zone_ac1Characterizing said first regulation ratio, F_ac2Characterizing the second adjustment ratio.

6. The method for adjusting a rotational speed isolation region according to claim 1, wherein after determining the adjustment ratio according to the crossing times and the preset time interval, the method further comprises:

and adjusting the height of the rotating speed isolation region according to the adjusting proportion.

7. The method for adjusting a rotational speed isolation region according to claim 1, wherein before determining the adjustment ratio according to the crossing times and the preset time interval, the method further comprises:

acquiring the crossing times in a historical time window, wherein the historical time window is positioned before the fixed time window and is continuous with the fixed time window;

and determining the average crossing times according to the crossing times in the historical time window, the crossing times in the fixed time window and the length of the historical time window relative to the fixed time window, and taking the average crossing times as the final crossing times.

8. A kind of adjusting device of the rotational speed isolation area, characterized by that, apply to the electronic equipment, the said device includes:

the information acquisition unit is used for acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region;

the processing unit is used for determining an adjusting proportion according to the crossing times and a preset time interval;

the processing unit is further used for adjusting the width of the rotating speed isolation region according to the adjusting proportion.

9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-7.

10. An electronic device, comprising: a processor and memory for storing one or more programs; the one or more programs, when executed by the processor, implement the method of any of claims 1-7.

Technical Field

The application relates to the field of wind power generation, in particular to a method and a device for adjusting a rotating speed isolation area, a storage medium and electronic equipment.

Background

With the increase of the single machine capacity of the wind generating set and the maturity of the wind energy technology, the research of the large wind generating set at present focuses on reducing the investment cost of the tower. Including reduced impeller blade count and high tower technology. Based on the objective conditions, in order to reduce the weight of the tower, the industry widely uses the wind driven generator rotating speed isolation control technology, and the resonance superposition interval exists between the rotating speed of the isolation impeller and the first-order natural frequency of the tower. The conventional control strategy is as follows: the wind generating set does not have a resonance superposition interval between the rotating speed of the impeller and the first-order natural frequency of the tower, the rotating speed-torque of the wind generating set is controlled in a conventional mode, and the maximum wind energy tracking area of the wind generating set is not interrupted. Control strategy with speed isolation zone: if the resonance coincidence interval exists, a rotating speed isolation area needs to be designed, and the running process of the fan deviates from an optimal point, so that the purpose of quickly skipping the specified rotating speed running interval is achieved.

When the control strategy with the rotating speed isolation region is used, the maximum wind energy tracking region of the wind generating set is interrupted by the rotating speed isolation region, so that the wind generating set cannot follow the maximum wind energy capturing curve in the whole process, and the generating capacity of the wind generating set is damaged. On the basis of reducing the resonance of the impeller and the tower, the utilization rate of wind energy is only possibly improved, and the power generation capacity of the wind generating set is improved, so that the problem to be solved by technical personnel in the field is urgently solved.

Disclosure of Invention

The present application is directed to a method and an apparatus for adjusting a rotation speed isolation region, a storage medium, and an electronic device, so as to at least partially solve the above problems.

In order to achieve the above purpose, the embodiments of the present application employ the following technical solutions:

in a first aspect, an embodiment of the present application provides a method for adjusting a rotation speed isolation region, where the method is applied to an electronic device, and the method includes:

acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region;

determining an adjusting proportion according to the crossing times and a preset time interval;

and adjusting the width of the rotating speed isolation region according to the adjusting proportion.

In a second aspect, an embodiment of the present application provides an adjusting apparatus for a rotation speed isolation region, which is applied to an electronic device, and the apparatus includes:

the information acquisition unit is used for acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region;

the processing unit is used for determining an adjusting proportion according to the crossing times and a preset time interval;

the processing unit is further used for adjusting the width of the rotating speed isolation region according to the adjusting proportion.

In a third aspect, the present application provides a storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the method described above.

In a fourth aspect, an embodiment of the present application provides an electronic device, including: a processor and memory for storing one or more programs; the one or more programs, when executed by the processor, implement the methods described above.

Compared with the prior art, the adjusting method, the adjusting device, the storage medium and the electronic device of the rotational speed isolation region provided by the embodiment of the application comprise: acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region; determining an adjusting proportion according to the crossing times and a preset time interval; and adjusting the width of the rotating speed isolation region according to the adjusting proportion. And after the adjusting proportion is obtained, adjusting the width of the rotational speed isolation region, wherein the width of the isolation region represents the length of the maximum wind energy tracking curve which is not overlapped with the torque control curve of the wind generating set. The power generation loss can be reduced by adjusting the rotating speed isolation area, and meanwhile, the implementation reliability is improved, so that the power generation loss is reduced on the premise of effectively avoiding tower resonance.

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and it will be apparent to those skilled in the art that other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic diagram of a basic torque and rotation speed control curve of a wind generating set provided by an embodiment of the application;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic flow chart of an adjusting method for a rotational speed isolation region according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating sub-steps of S104 according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram illustrating another substep of S104 according to an embodiment of the present disclosure;

fig. 6 is a schematic flow chart illustrating an adjusting method of a rotational speed isolation region according to an embodiment of the present disclosure;

fig. 7 is a schematic unit diagram of an adjusting apparatus of a rotational speed isolation region according to an embodiment of the present disclosure.

In the figure: 10-a processor; 11-a memory; 12-a bus; 13-a communication interface; 201-an information acquisition unit; 202-processing unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

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 the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The basic torque and rotation speed control curve of the wind generating set is shown in fig. 1, wherein the curve marked by a circle is an MPPT maximum wind energy tracking curve, and the curve marked by a triangle is a wind generating set torque control curve. The maximum wind energy tracking curve and the torque control curve of the wind generating set have a superposition part so as to convert the wind energy to the maximum. In the embodiment of the application, the described rotating speed isolation width is the rotating speed interval corresponding to the abscissa of B-E-F-C. The rotating speed corresponding to the abscissa of B-E is w_low0The rotating speed corresponding to the abscissa of F-C is w_up0. The torque corresponding to the ordinate of the point E is T_low0The torque corresponding to the ordinate of the F point is T_up0. The rotational speed isolation width is equal to w_up0-w_low0。

The conventional control mode that the wind generating set does not have a resonance superposition interval between the impeller rotating speed and the tower first-order natural frequency is as follows: A-B-G-C-D. The maximum wind energy tracking curve and the torque control curve of the wind generating set have the superposition part with the maximum range. The more the overlapping part is, the wider the efficient interval of the power generation performance of the wind generating set is.

The control strategy for the wind generating set with the rotating speed isolation region, which has the resonance superposition interval between the rotating speed of the impeller and the first-order natural frequency of the tower, is as follows: A-B-E-F-C-D.

Due to the existence of the B-E-F-C section of the rotating speed isolation area, the rotating speed of the impeller of the wind generating set cannot stay in the rotating speed isolation area corresponding to the abscissa of the B-E-F-C for a long time, and the wind generating set is protected from entering the rotating speed of the impeller and the resonance overlapping area of the first-order natural frequency of the tower for a long time. Meanwhile, the torque control curve of the wind generating set is not overlapped with the maximum wind energy tracking curve any more. The rotating speed isolation area interrupts the maximum wind energy tracking area, so that the wind generating set cannot follow the maximum wind energy capture curve in the whole process, and the power generation performance is reduced.

As described above, from the perspective of reducing the power generation loss and from the perspective of implementation reliability, a safe, efficient and reliable method for adjusting the width of the rotational speed isolation region of the wind turbine generator system is needed to support the width adjustment of the rotational speed isolation region in the operation process of the wind turbine generator system, so that the power generation loss is reduced on the premise of effectively avoiding tower resonance.

The embodiment of the application provides an electronic device, which can be a control device in a wind generating set, and can also be an external server or other computing devices. Please refer to fig. 2, a schematic structural diagram of an electronic device. The electronic device comprises a processor 10, a memory 11, a bus 12. The processor 10 and the memory 11 are connected by a bus 12, and the processor 10 is configured to execute an executable module, such as a computer program, stored in the memory 11.

The processor 10 may be an integrated circuit chip having signal processing capabilities. In the implementation process, the steps of the adjustment method of the rotational speed isolation region may be implemented by an integrated logic circuit of hardware in the processor 10 or instructions in the form of software. The Processor 10 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.

The Memory 11 may comprise a high-speed Random Access Memory (RAM) and may further comprise a non-volatile Memory (non-volatile Memory), such as at least one disk Memory.

The bus 12 may be an ISA (Industry Standard architecture) bus, a PCI (peripheral Component interconnect) bus, an EISA (extended Industry Standard architecture) bus, or the like. Only one bi-directional arrow is shown in fig. 2, but this does not indicate only one bus 12 or one type of bus 12.

The memory 11 is used for storing programs, for example, programs corresponding to the adjusting device of the rotational speed isolation region. The adjusting device of the rotational speed isolation region comprises at least one software functional module which can be stored in a memory 11 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the electronic device. After receiving the execution instruction, the processor 10 executes the program to implement the adjustment method of the rotational speed isolation region.

Possibly, the electronic device provided by the embodiment of the present application further includes a communication interface 13. The communication interface 13 is connected to the processor 10 via a bus.

In one possible implementation, the electronic device may receive the rotational speed information transmitted by the wind turbine generator system through the communication interface 13.

It should be understood that the structure shown in fig. 2 is merely a structural schematic diagram of a portion of an electronic device, which may also include more or fewer components than shown in fig. 2, or have a different configuration than shown in fig. 2. The components shown in fig. 2 may be implemented in hardware, software, or a combination thereof.

The method for adjusting a rotation speed isolation region provided in the embodiment of the present application can be applied to, but is not limited to, the electronic device shown in fig. 2, and please refer to fig. 3:

s101, acquiring the crossing times in a fixed time window.

The crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region.

With reference to fig. 1, it is assumed that the rotation speed interval corresponding to the abscissa of the rotation speed isolation region B-E-F-C is (5-8), when the rotation speed is changed from 4.9 to 8, the crossing is indicated once, and when the rotation speed is changed from 8.1 to 5, the crossing is also indicated once. It should be noted that the change of the rotation speed is continuous, and the degree of continuity has a relationship with the sampling interval of the rotation speed, that is, the process of changing the rotation speed from 4.9 to 8 may be 4.9, 5.3, 5.7, 6.3, 6.8, 7.5 and 8.

And S104, determining the adjusting proportion according to the crossing times and the preset time interval.

Specifically, the crossing times are related to the width of the rotational speed isolation region within a specified time range. When the crossing times are too large, the current wind condition is fast changed. Meanwhile, it can be known that the rotating speed of the hub of the wind generating set is positively correlated with the current wind speed. When the wind condition changes rapidly, the rotating speed of the hub of the wind generating set also changes rapidly. At the moment, the time length staying in the rotating speed isolation area is reduced, and the rotating speed isolation area needs to be adjusted to improve the power generation performance of the wind generating set. Similarly, when the number of passes is too small, it indicates that the current wind condition is stable, which may cause the residence time in the rotational speed isolation region to be longer, and the risk of resonance to increase, so that the width of the rotational speed isolation region needs to be adjusted correspondingly. In such a case, the adjustment ratio may be determined according to the crossing times and the preset time interval. The adjusting proportion is the proportion of adjusting the width of the rotating speed isolation area.

It should be noted that, if the current rotation speed is in the rotation speed isolation region, the controller of the wind turbine generator system may control other related devices, so that the rotation speed rapidly passes through the isolation region, thereby reducing resonance.

And S105, adjusting the width of the rotating speed isolation region according to the adjusting proportion.

Referring to the expression in S104, the width of the rotational speed isolation region may be adjusted after obtaining the adjustment ratio, where the width of the isolation region indicates a length of the maximum wind energy tracking curve not overlapping with the torque control curve of the wind turbine generator system. The power generation loss can be reduced by adjusting the rotating speed isolation area, and meanwhile, the implementation reliability is improved, so that the power generation loss is reduced on the premise of effectively avoiding tower resonance.

In summary, an embodiment of the present application provides a method for adjusting a rotational speed isolation region, including: acquiring the crossing times in a fixed time window, wherein the crossing times are the times of the hub rotating speed of the wind generating set crossing the rotating speed isolation region; determining an adjusting proportion according to the crossing times and a preset time interval; and adjusting the width of the rotating speed isolation region according to the adjusting proportion. And after the adjusting proportion is obtained, adjusting the width of the rotational speed isolation region, wherein the width of the isolation region represents the length of the maximum wind energy tracking curve which is not overlapped with the torque control curve of the wind generating set. The power generation loss can be reduced by adjusting the rotating speed isolation area, and meanwhile, the implementation reliability is improved, so that the power generation loss is reduced on the premise of effectively avoiding tower resonance.

On the basis of fig. 3, in the case that the adjustment ratio includes a first adjustment ratio and a second adjustment ratio, regarding how to obtain the adjustment ratio in S104, the embodiment of the present application further provides a possible implementation manner, please refer to fig. 4, where S104 includes:

and S104-1, judging whether the crossing times are greater than a preset threshold upper limit. If yes, at least S104-2; if not, S104-5 is executed.

Wherein, the upper limit of the preset threshold is the upper limit of the frequency interval.

Specifically, when the crossing times are greater than the upper limit of the preset threshold, the crossing times are too many, and the rotating speed is required to be correspondingly adjusted to isolate the interval, and then S104-2 is executed; otherwise, it is determined whether the crossing times are too small, and then S104-5 is performed.

And S104-2, determining a first regulation proportion according to the crossing times, the upper preset threshold limit and the lower preset threshold limit.

Wherein, the lower limit of the preset threshold is the lower limit of the frequency interval.

Determining an expression of the first regulation ratio according to the crossing times, the preset upper threshold and the preset lower threshold as follows:

F_ac1＝(C_avg-C_max)/(C_max-C_min)；

wherein, F_ac1Characterizing a first adjustment ratio, C_minCharacterizing a lower threshold of a preset value, C_maxCharacterizing an upper predetermined threshold, C_avgAnd characterizing the crossing times.

And S104-5, judging whether the crossing times are less than a preset threshold lower limit. If yes, executing S104-7; if not, S104-6 is executed.

Specifically, when the crossing frequency is smaller than the preset lower threshold, the crossing frequency is too small, and a corresponding rotation speed adjustment isolation interval is needed, and then S104-7 is executed; otherwise, S104-6 is executed.

S104-6, skip.

And S104-7, determining a second regulation proportion according to the crossing times, the upper preset threshold limit and the lower preset threshold limit.

Determining an expression of a second regulation ratio according to the crossing times, the upper preset threshold limit and the lower preset threshold limit, wherein the expression comprises the following steps:

F_ac2＝(C_min-C_avg)/(C_max-C_min)；

wherein, F_ac2Characterizing a second adjustment ratio, C_minCharacterizing a lower threshold of a preset value, C_maxCharacterizing an upper predetermined threshold, C_avgAnd characterizing the crossing times.

It should be noted that, in the embodiment of the present application, it is first determined whether the crossing frequency is greater than the upper limit of the preset threshold, and if not, it is then determined whether the crossing frequency is less than the lower limit of the preset threshold. In a possible implementation manner, it may also be determined whether the crossing times are smaller than a preset lower threshold, and if not, whether the crossing times are greater than a preset upper threshold is determined. That is, S104-5 may be performed prior to S104-1, and will not be described herein.

Preferably, in this embodiment of the present application, a value of the lower limit of the preset threshold is 1, and a value of the upper limit of the preset threshold is 3.

With continuing reference to fig. 4, regarding the content in S105, the embodiment of the present application further provides a possible implementation manner, and S105 includes:

and S105-1, reducing the width of the rotating speed isolation region according to the first regulation proportion.

And under the condition that the crossing times are greater than the upper limit of the preset threshold, the width of the rotating speed isolation region needs to be reduced and adjusted.

And S105-2, increasing the width of the rotating speed isolation region according to the second regulation proportion.

And under the condition that the crossing times are less than the lower limit of the preset threshold value, the width of the rotating speed isolation area needs to be increased and adjusted.

Under the condition that the crossing times are larger than the upper limit of the preset threshold, the expression for reducing the width of the rotating speed isolation region according to the first regulation proportion is as follows:

w_low＝w_low0×(1+F_ac1)；

w_up＝w_up0×(1-F_ac1)；

under the condition that the crossing times are smaller than the lower limit of the preset threshold, the expression for increasing the width of the rotating speed isolation region according to the second regulation proportion is as follows:

w_low＝w_low0×(1-F_ac2)；

w_up＝w_up0×(1+F_ac2)；

wherein, w_lowNew lower limit, w, characterizing the rotational speed isolation zone_upCharacterizing a new upper limit, w, of the rotational speed isolation region_low0Characterizing the original lower bound, w, of the rotational speed isolation region_up0Characterizing the original upper limit of the rotational speed isolation zone, F_ac1Characterizing a first adjustment ratio, F_ac2Characterizing the second adjustment ratio.

On the basis of fig. 4, regarding how to further ensure the precision of the adjustment of the rotational speed isolation region, the embodiment of the present application further provides a possible implementation manner, please refer to fig. 5, and S104 further includes:

and S104-3, judging whether the first adjusting proportion is larger than a proportion threshold value. If yes, executing S104-4; if not, S105-1 is executed.

Specifically, after performing S104-2, it is necessary to determine whether the first adjustment ratio is larger than the ratio threshold. When the first adjustment ratio is larger than the ratio threshold, which indicates that the adjustment amplitude is too large, the adjustment amplitude needs to be reduced, that is, the ratio threshold is used as the first adjustment ratio, and S104-4 is executed. Otherwise, S105-1 may be directly performed.

And S104-4, taking the ratio threshold as a first adjusting ratio.

And S104-8, judging whether the second adjusting proportion is larger than a proportion threshold value. If yes, executing S104-9; if not, S105-2 is executed.

Specifically, after execution of S104-7, it is necessary to determine whether the second adjustment ratio is larger than the ratio threshold value. When the second adjustment ratio is larger than the ratio threshold, which indicates that the adjustment amplitude is too large, the adjustment amplitude needs to be reduced, that is, the ratio threshold is used as the second adjustment ratio, and S104-9 is executed. Otherwise, S105-2 may be directly performed.

And S104-9, taking the ratio threshold as a second adjusting ratio.

Regarding the value of the ratio threshold, the embodiment of the present application also provides a possible implementation manner, please refer to the following.

The expression of the proportional threshold is: 2 xw_up0/(w_up0+w_low0)-1.02。

Wherein, w_low0Characterizing the original lower bound, w, of the rotational speed isolation region_up0And representing the original upper limit of the rotating speed isolation area.

On the basis of fig. 3, after determining the adjustment ratio, a possible implementation manner is further provided in the embodiment of the present application as to how to adjust the height of the rotational speed isolation region, please refer to fig. 6, where the method for adjusting the rotational speed isolation region further includes:

and S106, adjusting the height of the rotating speed isolation region according to the adjusting proportion.

Optionally, in a case that the number of crossings is greater than a preset upper threshold, an expression for reducing the width of the rotation speed isolation region according to the first adjustment ratio is as follows:

T_low＝T_low0×(1-F_ac1)；

T_up＝T_up0×(1+F_ac1)；

under the condition that the crossing times are smaller than the lower limit of the preset threshold, the expression for increasing the width of the rotating speed isolation region according to the second regulation proportion is as follows:

T_low＝T_low0×(1+F_ac2)；

T_up＝T_up0×(1-F_ac2)；

wherein, T_lowCharacterizing a new lower bound, T, of the rotational speed isolation zone_upCharacterizing the New Upper bound, T, of the rotational speed isolation zone_low0Characterizing the original lower limit, T, of the rotational speed isolation zone_up0Characterizing the original upper limit of the rotational speed isolation zone, F_ac1Characterizing a first adjustment ratio, F_ac2Characterizing the second adjustment ratio.

It should be noted that the adjustment of the height is beneficial to improve the coordination of the work of the generator set.

With continuing reference to fig. 6, regarding how to improve the accuracy of the number of passes, the embodiment of the present application further provides a possible implementation manner, and the method for adjusting the rotational speed isolation region further includes:

and S102, acquiring the crossing times in the historical time window.

Wherein the historical time window precedes and is continuous with the fixed time window.

S103, determining the average crossing times according to the crossing times in the historical time window, the crossing times in the fixed time window and the length of the historical time window relative to the fixed time window, and taking the average crossing times as the final crossing times.

Optionally, the length of the historical time window is 20min, and the length of the fixed time window is 10min.

In the embodiment of the application, the width of the rotating speed isolation region is adjusted by using the rotating speed as an input quantity. The rotation speed measuring link of the wind generating set is a necessary component of a closed-loop control system, and is different from wind speed-turbulence measurement and vibration measurement of a vibration sensor tower which are possibly seriously influenced by the external environment, so that the high reliability of the measurement input of the wind generating set is ensured by taking the rotation speed as one of the most important closed-loop feedback quantities of the wind generating set, and the set can be shut down and protected when the measurement is abnormal. Therefore, the rotating speed is used as the adjusting input, abnormal actions caused by signal errors can be avoided, and the safety of the wind generating set in implementation is remarkably improved.

In the embodiment of the application, in the normal power generation operation process of the wind driven generator, the wind driven generator does not need to be stopped, the traditional design method of the fixed-width rotating speed isolation region is changed, and the width of the rotating speed isolation region can be dynamically adjusted under certain external conditions and the wind driven generator can operate. Meanwhile, the adjusting method of the rotating speed isolation region provided by the embodiment of the application has bidirectional adjusting capability, and the width adjustment of the rotating speed isolation region not only can increase the width of the isolation region on the basis of the original parameters, but also can reduce the width of the isolation region on the basis of the original parameters.

Referring to fig. 7, fig. 7 is a schematic diagram of an adjusting apparatus for a rotational speed isolation region according to an embodiment of the present disclosure, where the adjusting apparatus for a rotational speed isolation region is optionally applied to the electronic device described above.

The adjusting device of the rotating speed isolation area comprises: an information acquisition unit 201 and a processing unit 202.

The information obtaining unit 201 is configured to obtain a crossing frequency within a fixed time window, where the crossing frequency is a frequency at which a hub rotation speed of the wind turbine generator system crosses a rotation speed isolation region. Alternatively, the information acquisition unit 201 may execute S101 described above.

The processing unit 202 is configured to determine an adjustment ratio according to the crossing times and a preset time interval.

The processing unit 202 is further configured to adjust the width of the rotational speed isolation region according to the adjustment ratio.

Alternatively, the processing unit 202 may execute S104 and S105 described above.

It should be noted that the adjusting apparatus for a rotational speed isolation region provided in this embodiment may execute the method flow shown in the above method flow embodiment to achieve the corresponding technical effect. For the sake of brevity, the corresponding contents in the above embodiments may be referred to where not mentioned in this embodiment.

The embodiment of the application also provides a storage medium, wherein the storage medium stores a computer instruction and a program, and the computer instruction and the program execute the adjusting method of the rotating speed isolation area of the embodiment when being read and run. The storage medium may include memory, flash memory, registers, or a combination thereof, etc.

The following provides an electronic device, which may be a control device in a wind turbine generator system, or an external server or other computing device, and as shown in fig. 2, the electronic device may implement the above adjustment method for the rotational speed isolation region; specifically, the electronic device includes: processor 10, memory 11, bus 12. The processor 10 may be a CPU. The memory 11 is used for storing one or more programs, and when the one or more programs are executed by the processor 10, the method for adjusting the rotational speed isolation region according to the above embodiment is performed.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.