A wind turbine speed optimization method and system for a wind farm

Abstract

The application provides a wind turbine rotating speed optimization method and system for a wind farm. The method comprises the following steps: numbering each wind turbine generator in the wind farm based on the incoming wind direction of the wind farm; obtaining initial rotating speeds of the wind turbine generators; and optimizing the initial rotating speeds of the wind turbine generators in sequence from small to large according to the numbering of the wind turbine generators, so as to obtain optimized rotating speeds of the wind turbine generators in the wind farm. The technical scheme provided by the application optimizes the rotating speeds of all the wind turbine generators in the wind farm, maximally increases the consistency of the rotating speeds of the wind turbine generators in the wind farm, and thus improves the overall operation efficiency of the wind farm.

Description

Technical Field

[0001] This application relates to the field of wind turbine speed optimization, and in particular to a method and system for optimizing wind turbine speed in a wind farm. Background Technology

[0002] During the operation of wind turbines in a wind farm, each turbine controls its speed according to the inflow wind velocity, thus operating at different speeds. Under current technology, the speed control of each turbine is independent, meaning each turbine operates at a different speed. This operating method does not consider the uneven airflow in the wind farm caused by the different speeds of different turbines.

[0003] Currently, because the operating mode does not take into account the uneven airflow in the wind farm caused by the different speeds of different wind turbines, the inflow wind of many units downwind cannot reach the unit's optimal operating wind speed, which leads to a decrease in the operating efficiency of downstream units and thus reduces the overall operating efficiency of the wind farm. Summary of the Invention

[0004] This application provides a method and system for optimizing the wind turbine speed in a wind farm, in order to at least solve the technical problem of uneven airflow in a wind farm, which reduces the overall operating efficiency of the wind farm.

[0005] The first aspect of this application proposes a method for optimizing the wind turbine speed in a wind farm, the method comprising:

[0006] The wind turbines in the wind farm are sorted and numbered based on the direction of the incoming wind.

[0007] Obtain the initial operating speed of each wind turbine;

[0008] The initial operating speed of each wind turbine is optimized sequentially according to its number in ascending order, resulting in the optimized operating speed of each wind turbine in the wind farm.

[0009] Preferably, the step of optimizing the initial operating speed of each wind turbine in ascending order of its number to obtain the optimized operating speed of each wind turbine in the wind farm includes:

[0010] When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is determined based on the initial operating speed of the wind turbine.

[0011] When the number of the wind turbine is greater than 1, the operating speed of the current wind turbine is optimized based on the optimized operating speed of each wind turbine with a number less than the current wind turbine number, so as to obtain the optimized operating speed of the current wind turbine.

[0012] Furthermore, when the wind turbine is numbered 1, the optimized operating speed of the wind turbine is calculated as follows:

[0013] w1 = w 1,c

[0014] In the formula, w1 is the optimized operating speed of wind turbine unit numbered 1, w 1,c The initial operating speed is the wind turbine unit numbered 1.

[0015] Furthermore, when the wind turbine number is greater than 1, the optimized operating speed of the current wind turbine is calculated as follows:

[0016]

[0017] In the formula, w i For the optimized operating speed of wind turbine unit numbered i, w i,c For the initial operating speed of wind turbine unit numbered i, w i-1 For the optimized operating speed of wind turbine unit numbered i-1, w j The optimized operating speed for wind turbine unit numbered j.

[0018] A second aspect of this application provides a wind turbine speed optimization system for a wind farm, the system comprising:

[0019] The sorting module is used to sort and number the wind turbines in the wind farm based on the inflow wind direction.

[0020] The acquisition module is used to acquire the initial operating speed of each wind turbine.

[0021] The optimization module is used to optimize the initial operating speed of each wind turbine in ascending order of their numbers, so as to obtain the optimized operating speed of each wind turbine in the wind farm.

[0022] Preferably, the optimization module is used for:

[0023] When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is determined based on the initial operating speed of the wind turbine.

[0024] When the number of the wind turbine is greater than 1, the operating speed of the current wind turbine is optimized based on the optimized operating speed of each wind turbine with a number less than the current wind turbine number, so as to obtain the optimized operating speed of the current wind turbine.

[0025] Furthermore, when the wind turbine is numbered 1, the optimized operating speed of the wind turbine is calculated as follows:

[0026] w1 = w 1,c

[0027] In the formula, w1 is the optimized operating speed of wind turbine unit numbered 1, w 1,c The initial operating speed is the wind turbine unit numbered 1.

[0028] Furthermore, when the wind turbine number is greater than 1, the optimized operating speed of the current wind turbine is calculated as follows:

[0029]

[0030] In the formula, w i For the optimized operating speed of wind turbine unit numbered i, w i,c For the initial operating speed of wind turbine unit numbered i, w i-1 For the optimized operating speed of wind turbine unit numbered i-1, w j The optimized operating speed for wind turbine unit numbered j.

[0031] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method described in the first aspect embodiment.

[0032] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the method described in the first aspect.

[0033] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0034] This application proposes a method and system for optimizing the operating speed of wind turbines in a wind farm. The method includes: sorting and numbering each wind turbine in the wind farm based on the inflow wind direction; obtaining the initial operating speed of each wind turbine; and optimizing the initial operating speed of each wind turbine in ascending order of its number to obtain the optimized operating speed of each wind turbine in the wind farm. The technical solution proposed in this application, by optimizing the operating speed of all turbines in the wind farm, maximizes the consistency of the operating speed of the turbines within the wind farm, thereby improving the overall operating efficiency of the wind farm.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0037] Figure 1 This is a flowchart of a wind turbine speed optimization method for a wind farm according to an embodiment of this application;

[0038] Figure 2 This is a structural diagram of a wind turbine speed optimization system for a wind farm according to an embodiment of this application. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0040] This application proposes a method and system for optimizing the wind turbine speed in a wind farm. The method includes: sorting and numbering each wind turbine in the wind farm based on the inflow wind direction; obtaining the initial operating speed of each wind turbine; and optimizing the initial operating speed of each wind turbine sequentially according to its number in ascending order to obtain the optimized operating speed of each wind turbine in the wind farm. The technical solution proposed in this application, by optimizing the speed of all turbines in the wind farm, maximizes the consistency of the operating speed of the turbines within the wind farm, thereby improving the overall operating efficiency of the wind farm.

[0041] The following description, with reference to the accompanying drawings, illustrates a method and system for optimizing the wind turbine speed in a wind farm, according to an embodiment of this application.

[0042] Example 1

[0043] Figure 1 This is a flowchart of a wind turbine speed optimization method for a wind farm according to an embodiment of this application, as shown below. Figure 1 As shown, the method includes:

[0044] Step 1: Sort and number the wind turbines in the wind farm based on the direction of the incoming wind.

[0045] Step 2: Obtain the initial operating speed of each wind turbine;

[0046] It should be noted that the initial operating speed of each wind turbine is the operating speed generated by the algorithm of each wind turbine's own control system.

[0047] Step 3: Optimize the initial operating speed of each wind turbine in ascending order of its number to obtain the optimized operating speed of each wind turbine in the wind farm.

[0048] In this embodiment of the disclosure, step 3 includes:

[0049] When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is determined based on the initial operating speed of the wind turbine.

[0050] It should be noted that when the wind turbine is numbered 1, the optimized operating speed of the wind turbine is calculated as follows:

[0051] w1 = w 1,c

[0052] In the formula, w1 is the optimized operating speed of wind turbine unit numbered 1, w 1,c The initial operating speed is the wind turbine unit numbered 1.

[0053] When the number of the wind turbine is greater than 1, the operating speed of the current wind turbine is optimized based on the optimized operating speed of each wind turbine with a number less than the current wind turbine number, so as to obtain the optimized operating speed of the current wind turbine.

[0054] It should be noted that when the wind turbine number is greater than 1, the calculation formula for the optimized operating speed of the current wind turbine is as follows:

[0055]

[0056] In the formula, w i For the optimized operating speed of wind turbine unit numbered i, w i,c For the initial operating speed of wind turbine unit numbered i, w i-1 For the optimized operating speed of wind turbine unit numbered i-1, w j The optimized operating speed for wind turbine unit numbered j.

[0057] To more clearly illustrate the implementation process of a wind turbine speed optimization method for a wind farm according to an embodiment of this application, a specific method embodiment will be described in detail below:

[0058] 1) Sort all wind turbine units (N units in total) in the wind farm along the current inflow wind direction and number them from unit 1 to unit N;

[0059] 2) Let i = 1;

[0060] 3) If i = 1, then according to the algorithm of the unit i's own control system, the initial operating speed of unit i is set to w.1,c And take the initial operating speed as the optimized operating speed of wind turbine 1, and perform 5); if i≠1, then perform 4);

[0061] 4) Assume that the operating speed generated by the algorithm of the self-control system of unit i is w. i,c To correct it:

[0062]

[0063] 5) Check if i is less than or equal to N. If yes, let i = i + 1 and return to 3); otherwise, proceed to 6).

[0064] 6) The calculation is complete. Output w1 to w at this point. N This refers to the optimized operating speed of each wind turbine unit within the wind farm.

[0065] In summary, the wind turbine speed optimization method proposed in this embodiment optimizes the speed of all turbines in the wind farm, thereby maximizing the consistency of the operating speed of the turbines and improving the overall operating efficiency of the wind farm.

[0066] Example 2

[0067] Figure 2 This is a structural diagram of a wind turbine speed optimization system for a wind farm according to an embodiment of this application, as shown below. Figure 2 As shown, the system includes:

[0068] The sorting module 100 is used to sort and number the wind turbines in the wind farm based on the inflow wind direction.

[0069] The acquisition module 200 is used to acquire the initial operating speed of each wind turbine unit;

[0070] The optimization module 300 is used to optimize the initial operating speed of each wind turbine in ascending order of its number, so as to obtain the optimized operating speed of each wind turbine in the wind farm.

[0071] In this embodiment of the disclosure, the optimization module 300 is used for:

[0072] When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is determined based on the initial operating speed of the wind turbine.

[0073] When the number of the wind turbine is greater than 1, the operating speed of the current wind turbine is optimized based on the optimized operating speed of each wind turbine with a number less than the current wind turbine number, so as to obtain the optimized operating speed of the current wind turbine.

[0074] When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is calculated as follows:

[0075] w1 = w 1,c

[0076] In the formula, w1 is the optimized operating speed of wind turbine unit numbered 1, w 1,c The initial operating speed is the wind turbine unit numbered 1.

[0077] When the number of the wind turbine is greater than 1, the optimized operating speed of the current wind turbine is calculated as follows:

[0078]

[0079] In the formula, w i For the optimized operating speed of wind turbine unit numbered i, w i,c For the initial operating speed of wind turbine unit numbered i, w i-1 For the optimized operating speed of wind turbine unit numbered i-1, w j The optimized operating speed for wind turbine unit numbered j.

[0080] In summary, the wind turbine speed optimization system proposed in this embodiment optimizes the speed of all turbines in the wind farm, thereby maximizing the consistency of the operating speed of the turbines and improving the overall operating efficiency of the wind farm.

[0081] Example 3

[0082] To implement the above embodiments, this disclosure also proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method described in Embodiment 1.

[0083] Example 4

[0084] To implement the above embodiments, this disclosure also proposes a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in Embodiment 1.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0086] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0087] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for optimizing the wind turbine speed in a wind farm, characterized in that, The method includes: The wind turbines in the wind farm are sorted and numbered based on the direction of the incoming wind. Obtain the initial operating speed of each wind turbine; The initial operating speed of each wind turbine is optimized sequentially according to its number in ascending order, resulting in the optimized operating speed of each wind turbine in the wind farm; including: When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is determined based on the initial operating speed of the wind turbine. When the number of the wind turbine is greater than 1, the operating speed of the current wind turbine is optimized based on the optimized operating speed of each wind turbine with a number less than the current wind turbine number, so as to obtain the optimized operating speed of the current wind turbine. When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is calculated as follows: In the formula, The optimized operating speed for wind turbine unit numbered 1. The initial operating speed of wind turbine unit numbered 1; When the number of the wind turbine is greater than 1, the optimized operating speed of the current wind turbine is calculated as follows: In the formula, The optimized operating speed for wind turbine unit numbered i. Let i be the initial operating speed of the wind turbine unit numbered i. The optimized operating speed for wind turbine unit numbered i-1. The optimized operating speed for wind turbine unit numbered j.

2. A wind turbine speed optimization system for a wind farm, characterized in that, The system includes: The sorting module is used to sort and number the wind turbines in the wind farm based on the inflow wind direction. The acquisition module is used to acquire the initial operating speed of each wind turbine. The optimization module is used to optimize the initial operating speed of each wind turbine in ascending order of its number, so as to obtain the optimized operating speed of each wind turbine in the wind farm. The optimization module is used to: when the number of the wind turbine is 1, determine the optimized operating speed of the wind turbine based on the initial operating speed of the wind turbine; When the number of the wind turbine is greater than 1, the operating speed of the current wind turbine is optimized based on the optimized operating speed of each wind turbine with a number less than the current wind turbine number, so as to obtain the optimized operating speed of the current wind turbine. When the wind turbine is numbered 1, the optimized operating speed of the wind turbine is calculated as follows: In the formula, The optimized operating speed for wind turbine unit numbered 1. The initial operating speed of wind turbine unit numbered 1; When the number of the wind turbine is greater than 1, the optimized operating speed of the current wind turbine is calculated as follows: In the formula, The optimized operating speed for wind turbine unit numbered i. Let i be the initial operating speed of the wind turbine unit numbered i. The optimized operating speed for wind turbine unit numbered i-1. The optimized operating speed for wind turbine unit numbered j.

3. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the method as claimed in claim 1.

4. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in claim 1.

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