Method and system for calculating average wind speed at a site

Abstract

The application provides a base average wind speed calculation method and system, the method comprises the following steps: dividing a target area into multiple grids according to different geographic information, and determining the longitude and latitude information of each grid; determining the target grid where the base is located according to the longitude and latitude information of the base to be studied and the longitude and latitude information of each grid; obtaining historical weather forecast information or real-time weather monitoring information of the target grid; obtaining wind speed time series data at the hub height of the wind turbine of the base from the historical weather forecast information or the real-time weather monitoring information, and calculating the average wind speed of the base according to the wind speed time series data. The method can accurately calculate the average wind speed of the base, and improves the accuracy of the average wind speed calculation of the base.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind speed calculation, and particularly relates to a method and system for calculating average wind speed of a base. BACKGROUND

[0002] With the development of new energy technology, the popularity of wind power generation is gradually increasing. In actual wind power generation construction, in order to reduce costs and improve power generation quality, centralized and large-scale development of wind turbine generators is usually carried out, and wind turbine generator fields are constructed in the planned base.

[0003] In the process of understanding the environmental conditions of wind turbine generators and formulating power generation plans, the average wind speed of the base needs to be determined. In related technologies, when the average wind speed of the base is determined, the average wind speed is generally roughly estimated according to existing inaccurate wind speed data. However, the result of the average wind speed obtained by the above method has a large deviation, and cannot meet the demand of high-quality wind power generation. Therefore, how to more accurately obtain the average wind speed of the base has become a problem to be solved at present. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the first object of the present application is to provide a method for calculating the average wind speed of a base. The method calculates the average wind speed of the base by dividing the base into grids and calculating the average wind speed of the base by the average wind speed of the grid to which the base belongs, so as to accurately calculate the average wind speed of the base and improve the accuracy of the calculation of the average wind speed of the base.

[0006] The second object of the present application is to provide a system for calculating the average wind speed of a base.

[0007] The third object of the present application is to provide a non-transitory computer readable storage medium.

[0008] To achieve the above object, the first aspect of the present application provides a method for calculating the average wind speed of a base, comprising the following steps:

[0009] Divide the target area into a plurality of grids according to different geographic information, and determine the longitude and latitude information of each grid;

[0010] According to the longitude and latitude information of the base to be studied and the longitude and latitude information of each grid, determine the target grid in which the base is located;

[0011] Obtain historical weather forecast information or real-time weather monitoring information of the target grid;

[0012] The wind speed time series data at the hub height of the wind turbine generator of the base is obtained from the historical meteorological forecast information or the real-time meteorological monitoring information, and the average wind speed of the base is calculated according to the wind speed time series data.

[0013] Optionally, in an embodiment of the present application, the calculation of the average wind speed of the base according to the wind speed time series data comprises: adding each record of the wind speed time series data within a preset calculation period; and dividing the sum by the number of records of the wind speed time series data within the calculation period to obtain the average wind speed of the base.

[0014] Optionally, in an embodiment of the present application, when the target grid is multiple, the calculation of the average wind speed of the base according to the wind speed time series data comprises: calculating the average wind speed corresponding to each target grid according to the wind speed time series data of each target grid, respectively; and calculating the average wind speed of the base according to the area of the base in each target grid, the area of the base, and the average wind speed corresponding to each target grid.

[0015] Optionally, in an embodiment of the present application, the average wind speed of the base is calculated by the following formula:

[0016]

[0017] wherein v represents the average wind speed of the base, S represents the area of the base, S n represents the area of the base in the nth target grid, v n represents the average wind speed corresponding to the nth target grid, and n is a positive integer.

[0018] Optionally, in an embodiment of the present application, the obtaining of the historical meteorological forecast information or the real-time meteorological monitoring information of the target grid comprises: judging whether a meteorological monitoring station is arranged in the target grid; obtaining the real-time meteorological monitoring information monitored by the meteorological monitoring station when the meteorological monitoring station is arranged; and obtaining the historical meteorological forecast information of the target grid within a preset time period when the meteorological monitoring station is not arranged.

[0019] Optionally, in an embodiment of the present application, the division of the target area into multiple grids comprises: dividing the target area into multiple grids with the same size according to a meteorological forecast information grid division mode.

[0020] To achieve the above purpose, a second aspect embodiment of the present application provides a base average wind speed calculation system, comprising the following modules:

[0021] The dividing module is configured to divide a target area into a plurality of grids according to different geographical information, and determine longitude and latitude information of each grid.

[0022] The determining module is configured to determine a target grid in which the base is located according to the longitude and latitude information of the base to be researched and the longitude and latitude information of each grid.

[0023] The obtaining module is configured to obtain historical weather forecast information or real-time weather monitoring information of the target grid.

[0024] The calculating module is configured to obtain wind speed time series data at a hub height of a wind turbine generator of the base from the historical weather forecast information or the real-time weather monitoring information, and calculate an average wind speed of the base according to the wind speed time series data.

[0025] Optionally, in an embodiment of the present application, the calculating module is specifically configured to add each record of the wind speed time series data in a preset calculation period, divide the sum by the number of wind speed sequence records in the calculation period, and obtain the average wind speed of the base.

[0026] Optionally, in an embodiment of the present application, when the target grid is a plurality of target grids, the calculating module is further configured to calculate an average wind speed corresponding to each target grid according to the wind speed time series data of each target grid, and calculate the average wind speed of the base according to an area of the base in each target grid, an area of the base, and the average wind speed corresponding to each target grid.

[0027] To implement the above-mentioned embodiments, the third aspect of the present application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and the computer program is executed by a processor to implement the base average wind speed calculation method in the above-mentioned embodiments.

[0028] The embodiments of the present application provide at least the following beneficial effects: the present application first divides geographical information into a plurality of grids, then determines the grid to which the base belongs, and then obtains historical weather forecast data or weather station monitoring data of the grid to which the base belongs, and calculates the average wind speed of the base according to the historical weather forecast data or the weather station monitoring data. Thus, the present application can first obtain meteorological data with higher relevance to the base through grid division, and then calculate the average wind speed of the base according to the obtained data, so as to calculate the average wind speed of the base more specifically according to the data with higher relevance, accurately calculate the average wind speed of the base, improve the accuracy of the calculation of the average wind speed of the base, and facilitate the reasonable control of wind power generation.

[0029] Additional aspects and advantages of the present application will be apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood through consideration of the following description, taken in conjunction with the accompanying drawings, in which:

[0031] Figure 1 A flow chart of a method for calculating average wind speed of a base according to an embodiment of the present application;

[0032] Figure 2 A flow chart of a method for calculating average wind speed of a specific base according to an embodiment of the present application;

[0033] Figure 3 A structural schematic diagram of a system for calculating average wind speed of a base according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like reference numerals refer to like elements or elements having similar functions. The embodiments described below are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0035] A method and system for calculating average wind speed of a base according to an embodiment of the present application are described below with reference to the attached drawings.

[0036] Figure 1 A flow chart of a method for calculating average wind speed of a base according to an embodiment of the present application is shown in FIG. 1, which includes the following steps: Figure 1 As shown in the figure, the method includes the following steps:

[0037] In step S101, the target area is divided into multiple grids according to different geographic information, and the longitude and latitude information of each grid is determined.

[0038] The target area refers to the area where the base to be calculated for average wind speed is located. The geographic range of the target area can be wide, for example, the target area can be a city, a province or a country, etc. In addition, the target area needs to be able to make weather forecast, or a meteorological monitoring station is set in the area.

[0039] Specifically, the present application divides the grid area in order to facilitate the zoning of the geographic information of the target area. The target area is divided into multiple grids according to spatial geographic distribution, so as to subsequently perform more targeted average wind speed calculation for the grid to which the base belongs.

[0040] As a possible implementation, the target area is divided into multiple grids, including dividing the target area into multiple grids of the same size according to a weather forecast information grid division manner. Specifically, since currently when weather is forecasted, the area to be predicted is divided into multiple grids, and weather is forecasted for each grid to achieve accurate grid weather forecast. Therefore, the application can divide the grid according to the weather forecast information grid division manner, for example, the target area can be divided into a large number of grids of the same length and width according to a 3km*3km or 9km*9km manner, and the actual remaining area less than one grid can be completed. That is, the grid can be divided by means of the existing weather forecast information grid division manner.

[0041] Further, the latitude and longitude information of each grid is determined. In an embodiment of the application, the position coordinates of the four corners of each grid can be determined in combination with various methods such as a geographic information system and a global positioning system, so as to determine the latitude and longitude information of each edge in the grid, and further determine the latitude and longitude range occupied by each grid.

[0042] In step S102, the target grid in which the base is located is determined according to the latitude and longitude information of the base to be studied and the latitude and longitude information of each grid.

[0043] The base to be studied can be a base including multiple wind turbine generator set stations.

[0044] Specifically, the latitude and longitude range of the target base to be studied is compared with the latitude and longitude range of each divided grid, and the grid to which the base belongs is determined, that is, the target grid for subsequent wind speed calculation is determined. For example, when the latitude and longitude range of the base is within the latitude and longitude range of a certain grid, the grid is determined as the target grid.

[0045] In step S103, the historical weather forecast information or real-time weather monitoring information of the target grid is obtained.

[0046] Specifically, the average wind speed of the base can be calculated according to the historical weather forecast information or real-time weather monitoring information of the target grid, wherein the historical weather forecast information includes wind speed, wind direction and weather conditions and other weather forecast information of the target grid in a previous period of time, and the real-time weather monitoring information is the current period of time of the meteorological information monitored by the meteorological station, including various meteorological information in the above weather forecast information. Therefore, the historical weather forecast information or real-time weather monitoring information is obtained first.

[0047] It can be understood that, since the accuracy and timeliness of the real-time monitored meteorological information are higher than those of the predicted meteorological information, in an embodiment of the present application, the historical meteorological prediction information or the real-time meteorological monitoring information of the target grid is obtained by the following steps: firstly, it is judged whether a meteorological monitoring station is arranged in the target grid, in the case that the meteorological monitoring station is arranged, the real-time meteorological monitoring information monitored by the meteorological monitoring station is obtained; in the case that the meteorological monitoring station is not arranged, the historical meteorological prediction information of the target grid in a preset time period is obtained.

[0048] Specifically, if the target grid is provided with a meteorological monitoring station or other facility capable of detecting meteorological information, real-time monitoring wind speed and other meteorological monitoring information is obtained through the meteorological monitoring station, if the target grid is not provided with a meteorological monitoring station capable of monitoring wind speed in real time, the predicted meteorological information of the target grid is utilized. The preset time period corresponding to the obtained historical meteorological prediction information is determined according to the wind speed calculation requirement, for example, at least one year of historical meteorological prediction information in the grid is obtained. It can be understood that, since the current weather prediction technology basically covers all regions of the world, the predicted meteorological information can be utilized to ensure the applicability and practicability of the average wind speed calculation method of the present application, and the wind speed calculation can be performed under different conditions.

[0049] In an embodiment of the present application, when the historical meteorological prediction information is obtained, the historical data stored in the weather prediction center system database can be called. In order to further improve the accuracy of the average wind speed calculation according to the historical meteorological prediction information, when the grid division is performed in step S101, a target region with a smaller regional range can be selected for grid division.

[0050] For example, it can be understood that, for a certain grid, the weather prediction information of the city where the grid is located can be more accurate and specific than the prediction information of the country where the grid is located, therefore, in the case that the weather prediction information of the city where the grid is located can be obtained, the city can be selected for grid division.

[0051] Step S104, from the historical meteorological prediction information or the real-time meteorological monitoring information, the time series wind speed sequence data at the hub height of the wind turbine generator of the base is obtained, and the average wind speed of the base is calculated according to the time series wind speed sequence data.

[0052] Specifically, the average wind speed of the base is calculated by the average wind speed of the grid to which the base belongs, that is, the average wind speed of the base is calculated according to the obtained meteorological information of the grid. In the calculation process, the time series wind speed sequence data at the hub height of the wind turbine generator is extracted from the obtained meteorological information according to the characteristics of the wind turbine generator in the base affected by the environmental wind speed, and the average wind speed of the base is calculated according to the time series wind speed sequence data.

[0053] The time sequence wind speed sequence data (i.e., wind speed time sequence data) includes wind speed data recorded at different times in chronological order. It can be understood that a wind turbine set includes various devices such as a wind wheel, a generator, and a tower, and the wind wheel includes various components such as blades, a hub, and reinforcing members. In the process of wind power generation, the blades rotate to generate electricity mainly under the influence of wind speed in the approximate range of the hub height of the wind wheel. Therefore, the average wind speed of the wind turbine set at the hub height is calculated in the application, which is convenient for subsequent application of the calculated average wind speed of the base to control wind power generation.

[0054] In an embodiment of the application, the average wind speed of the base is calculated according to the time sequence wind speed sequence data, which includes adding each record of the wind speed time sequence data in a preset calculation period, and then dividing the sum by the number of records of the wind speed time sequence data in the calculation period to obtain the average wind speed of the base. That is, the average wind speed of the base can be calculated by the following formula:

[0055]

[0056] wherein v i is the i th record in the time sequence wind speed sequence at the hub height of the wind turbine, and n is the number of records in the wind speed sequence in the calculation period.

[0057] The calculation period is determined according to the calculation accuracy requirement in actual application and the type of obtained meteorological information. For example, the calculation period for real-time meteorological monitoring information can be less than that for wind speed calculation based on historical meteorological forecast information, so as to reflect the timeliness of the calculation.

[0058] It can be understood that in actual application, after the target area is divided into multiple grids, the location of the base may be between multiple grids, i.e., different grids involve a part of the base range. Therefore, in order to realize the average wind speed calculation of the base when the target grid where the base is located is multiple, in an embodiment of the application, when the target grid is multiple, the average wind speed of the base is calculated according to the time sequence wind speed sequence data, which includes the following steps: first, the average wind speed corresponding to each target grid is calculated according to the time sequence wind speed sequence data of each target grid; then, the average wind speed of the base is calculated according to the area of the base in each target grid, the area of the base, and the average wind speed corresponding to each target grid.

[0059] Specifically, when the target grid is multiple, the average wind speed of the base can be calculated by the following formula:

[0060]

[0061] wherein v represents the average wind speed of the base, S represents the area of the base, S nv represents the area occupied by the base in the nth target grid. n This represents the average wind speed corresponding to the nth target grid, where n is a positive integer.

[0062] For example, a base belongs to three grids with a total area of ​​S. The area belonging to grid one is S1, the area belonging to grid two is S2, and the area belonging to grid three is S3. Then the final average wind speed of the base is calculated as follows:

[0063]

[0064] Where v1 is the average wind speed of grid 1, v2 is the average wind speed of grid 2, and v3 is the average wind speed of grid 3.

[0065] Therefore, this application uses a grid division method to calculate the average wind speed of the base based on the average wind speed of the grid to which the base belongs, which can accurately calculate the average wind speed of the base and improve the accuracy of the average wind speed calculation.

[0066] In summary, the method for calculating the average wind speed of a base in this application first divides the geographic information into multiple grids; then, it determines the grid to which the base belongs; next, it acquires historical weather forecast data or meteorological station monitoring data for the grid to which the base belongs, and calculates the average wind speed of the base based on the historical weather forecast data or meteorological station monitoring data. Therefore, this method, through grid division, can first acquire meteorological data with higher correlation to the base, and then calculate the average wind speed of the base based on the average wind speed of the grid to which the base belongs. This more targeted calculation of the average wind speed of the base using more relevant data can accurately calculate the average wind speed of the base, improving the accuracy of the base's average wind speed calculation and facilitating the rational control of wind power generation.

[0067] Based on the above embodiments, in order to more clearly describe the specific implementation process of the average wind speed calculation method of this application, the following is an exemplary description of a specific calculation method in one embodiment of this application. Figure 2 This is a flowchart illustrating a specific method for calculating the average wind speed at a base, as proposed in an embodiment of this application.

[0068] like Figure 2 As shown, the method includes the following steps:

[0069] Step S201: Divide the grid area.

[0070] Specifically, based on the grid division method of weather forecast information and the coverage of meteorological monitoring stations, the national geographic information is divided into countless grids.

[0071] Step S202: Determine the grid to which the base belongs.

[0072] Specifically, the grid to which the base belongs is determined according to the base coordinate range.

[0073] In step S203, the wind speed of the grid to which the base belongs is obtained.

[0074] Specifically, the historical weather forecast data and the meteorological station monitoring data of the grid are obtained. The obtained data include the wind speed at each height in the grid.

[0075] In step S204, the average wind speed of the base is calculated.

[0076] Specifically, the average wind speed of the base is calculated according to the historical weather forecast data and the meteorological station monitoring data.

[0077] It should be noted that the specific implementation of each step described above can refer to the related description in the above embodiments, which will not be repeated here.

[0078] In order to realize the above-mentioned embodiments, the application further provides a system for calculating the average wind speed of a base. Figure 3 A structural schematic diagram of a system for calculating the average wind speed of a base according to an embodiment of the application is shown in the figure.

[0079] As shown in the figure, the system includes a division module 100, a determination module 200, an acquisition module 300 and a calculation module 400. Figure 3

[0080] The division module 100 is configured to divide the target area into a plurality of grids according to different geographic information, and determine the longitude and latitude information of each grid.

[0081] The determination module 200 is configured to determine the target grid in which the base to be studied is located according to the longitude and latitude information of the base and the longitude and latitude information of each grid.

[0082] The acquisition module 300 is configured to obtain historical weather forecast information or real-time weather monitoring information of the target grid.

[0083] The calculation module 400 is configured to obtain time series wind speed sequence data of the hub height of the wind turbine generator of the base from the historical weather forecast information or the real-time weather monitoring information, and calculate the average wind speed of the base according to the time series wind speed sequence data.

[0084] Optionally, in an embodiment of the application, the calculation module 400 is specifically configured to add each record of the wind speed time series data within a preset calculation period, divide the sum by the number of records of the wind speed time series data within the calculation period, and obtain the average wind speed of the base.

[0085] ​Optionally, in an embodiment of the present application, when the target grids are multiple, the computing module 400 is further configured to calculate the average wind speed corresponding to each target grid according to the wind speed time series data of each target grid, and calculate the average wind speed of the base according to the area of the base in each target grid, the area of the base and the average wind speed corresponding to each target grid.

[0086] Optionally, in an embodiment of the present application, the computing module 400 is specifically configured to calculate the average wind speed of the base according to the following formula:

[0087]

[0088] wherein v represents the average wind speed of the base, S represents the area of the base, S n represents the area of the base in the nth target grid, v n represents the average wind speed corresponding to the nth target grid, and n is a positive integer. n wherein v represents the average wind speed of the base, S represents the area of the base, S n represents the area of the base in the nth target grid, v n represents the average wind speed corresponding to the nth target grid, and n is a positive integer. n wherein v represents the average wind speed of the base, S represents the area of the base, S n represents the area of the base in the nth target grid, v n represents the average wind speed corresponding to the nth target grid, and n is a positive integer.

[0089] Optionally, in an embodiment of the present application, the obtaining module 300 is specifically configured to determine whether a meteorological monitoring station is arranged in the target grid, obtain real-time meteorological monitoring information monitored by the meteorological monitoring station when the meteorological monitoring station is arranged, and obtain historical meteorological forecast information of the target grid in a preset time period when the meteorological monitoring station is not arranged.

[0090] Optionally, in an embodiment of the present application, the dividing module 100 is specifically configured to divide the target region into multiple grids with the same size according to a meteorological forecast information grid division mode.

[0091] It should be noted that the foregoing description of the embodiments of the method for calculating the average wind speed of the base also applies to the system of the present embodiment, and the implementation principle is the same, which will not be described here again.

[0092] In summary, the system for calculating the average wind speed of the base according to the embodiments of the present application first divides the geographic information into multiple grids, then determines the grid to which the base belongs, and then obtains the historical weather forecast data or the meteorological station monitoring data of the grid to which the base belongs, and calculates the average wind speed of the base according to the historical weather forecast data or the meteorological station monitoring data. Thus, the system can first obtain meteorological data with higher relevance to the base through grid division, and then calculate the average wind speed of the base according to the average wind speed of the grid to which the base belongs, so as to calculate the average wind speed of the base more specifically according to the data with higher relevance, accurately calculate the average wind speed of the base, improve the accuracy of the calculation of the average wind speed of the base, and facilitate the reasonable control of wind power generation.

[0093] In order to achieve the above-mentioned embodiments, the application further provides a non-transitory computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the base average wind speed calculation method of the first aspect of the application.

[0094] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the specification, if the illustrative expressions of the above terms are used in a plurality of embodiments or examples, it does not mean that the embodiments or examples are the same. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0095] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0096] Any process or method descriptions in flow charts or otherwise described herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for implementing the specified logic functions or processes, and the preferred embodiments of the application include additional implementation in which the functions are performed in a different order, or are performed substantially concurrently, or are performed in reverse order, or are performed in an alternative manner, as will be appreciated by those skilled in the art.

[0097] The logic and / or steps represented in flow diagrams or otherwise described herein, for example, can be considered as a sequence of instructions to implement logic functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device, such as a computer-based system, processor- containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. In the context of this specification, a "computer-readable medium" can be any means that can contain, store, communicate, propagate or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be a machine-readable storage device (e.g., magnetic, optical or other) a machine-readable storage diskette (e.g., floppy, flexible or other), a machine-readable storage card (e.g., RAM, ROM or other), a machine-readable storage tape (e.g., magnetic, optical or other), a machine-readable storage medium (e.g., a portable memory chip), a machine-readable signal, a machine-readable propagated signal, a machine-readable compressed signal, and the like. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection having one or more wires (e.g., a bus that has thin film resistors for

[0098] It should be understood that aspects of the application can be implemented in hardware, software, firmware or combinations thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. As such, in some embodiments, memory (including computer-readable storage media) can store software or firmware for use by the instruction execution system. In other embodiments, if implemented in hardware, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other class of hardware can be used to implement the above described components.

[0099] Those of skill in the art would understand that information and signals can be represented using any of a variety of technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referenced throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0100] In addition, each of the functional units in the various embodiments of the present application can be integrated in one processing module, or each of the units can be physically present separately, or two or more units can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0101] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A method of calculating an average wind speed at a site, characterized by, The method comprises the following steps: dividing a target area into a plurality of grids according to different geographical information and determining longitude and latitude information of each grid; determining a target grid in which the base is located according to the longitude and latitude information of the base to be studied and the longitude and latitude information of each grid; obtaining historical weather forecast information or real-time weather monitoring information of the target grid; obtaining wind speed time series data at the hub height of the wind turbine of the base from the historical weather forecast information or the real-time weather monitoring information, and calculating the average wind speed of the base according to the wind speed time series data, wherein the calculation of the average wind speed of the base according to the wind speed time series data comprises adding each record of the wind speed time series data within a preset calculation period, and dividing the sum by the number of records of the wind speed time series data within the calculation period to obtain the average wind speed of the base, wherein the average wind speed of the base is obtained by the following formula: wherein, v i is the number of records in the time series of wind speed at the height of the hub of the wind turbine for the calculation period, i n is the number of records in the time series of wind speed for the calculation period.​ 2. The method of claim 1, wherein, in the case where the target grid is multiple, the calculation of the average wind speed of the base according to the wind speed time series data comprises: calculating the average wind speed corresponding to each target grid according to the wind speed time series data of each target grid; calculating the average wind speed of the base according to the area of the base in each target grid, the area of the base and the average wind speed corresponding to each target grid.

3. The method of claim 2, wherein The average wind speed of the base is calculated by the following formula: wherein, represents the average wind speed of the base, represents the area of the base, represents the area of the base in the nth target grid, represents the average wind speed corresponding to the nth target grid, n being a positive integer.

4. The method of claim 1, wherein the obtaining of the historical weather forecast information or the real-time weather monitoring information of the target grid comprises: judging whether a weather monitoring station is arranged in the target grid; in the case where the weather monitoring station is arranged, obtaining the real-time weather monitoring information monitored by the weather monitoring station; in the case where the weather monitoring station is not arranged, obtaining the historical weather forecast information of the target grid within a preset time period.

5. The method of claim 1, wherein the division of the target area into a plurality of grids comprises: dividing the target area into a plurality of grids with the same size according to a weather forecast information grid division mode.

6. A system for calculating an average wind speed at a site, the system comprising: The method comprises the following modules: a division module configured to divide a target area into a plurality of grids according to different geographical information and determine longitude and latitude information of each grid; a determination module configured to determine a target grid in which the base is located according to the longitude and latitude information of the base to be studied and the longitude and latitude information of each grid; an obtaining module configured to obtain historical weather forecast information or real-time weather monitoring information of the target grid; a calculation module configured to obtain wind speed time series data at the hub height of the wind turbine of the base from the historical weather forecast information or the real-time weather monitoring information, and calculate the average wind speed of the base according to the wind speed time series data, wherein the calculation module is specifically configured to add each record of the wind speed time series data within a preset calculation period, divide the sum by the number of records of the wind speed time series data within the calculation period to obtain the average wind speed of the base, and obtain the average wind speed of the base by the following formula: wherein, v i is the number of records in the time series of wind speed at the height of the hub of the wind turbine for the calculation period, i n is the number of records in the time series of wind speed for the calculation period.​ 7. The ground-based average wind speed calculation system of claim 6, wherein, in the case where the target grid is multiple, the calculation module is further configured to: calculate the average wind speed corresponding to each target grid according to the wind speed time series data of each target grid; According to the wind speed time series data of each of the target grids, average wind speeds corresponding to each of the target grids are respectively calculated; According to the area of the base in each of the target grids, the area of the base, and the average wind speed corresponding to each of the target grids, an average wind speed of the base is calculated.

8. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by a processor, implements the method for calculating the average wind speed of the base according to any one of claims 1-5.

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