Information processing system, information processing device, information processing method, and program

Abstract

To enhance the utility value of observation data of wind state that is observed with a wind turbine used in wind power generation.SOLUTION: A control unit 11 of a management server 10 performs control so that: an acquisition unit 102 obtains first data including a wind speed for each wind direction, the first data being measured for over a predetermined period in a first wind turbine, and second data including a wind speed for each wind direction, the second data being measured for over a predetermined period in a second wind turbine; an estimation unit 103 estimates an estimated orientation of the second wind turbine with respect to the first wind turbine, based on a change degree of one or more of a wind speed difference, output difference, and power generation amount difference which are calculated from the first data and the second data; a specification unit 104 specifies whether there is a difference between the estimated orientation and a normal orientation; and a transmission control unit 108 transmits the specification of whether there is a difference therebetween, to a user terminal.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an information processing system, an information processing device, an information processing method, and a program. [Background technology]

[0002] Wind turbines used for wind power generation record various data, including observation data on wind conditions such as wind speed and direction, and operational data on the wind turbine such as the number of rotations of the wind turbine blades and output value. The various data recorded by wind turbines is used for the reconstruction and research of wind turbines, and related technologies exist (for example, Patent Document 1). Of the various data recorded by wind turbines, observation data on wind conditions is observed using an anemometer installed on the wind turbine. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-107068 Summary of the Invention [Problem to be solved by the invention]

[0004] The main purpose of anemometers installed on wind turbines is to control the operation of the turbine during strong winds, so emphasis is placed on resilience and weather resistance to withstand strong winds rather than on the accuracy of wind observations. For this reason, in order to improve the usefulness of wind observation data collected by wind turbines, it is necessary to improve the accuracy of the observation data.

[0005] An object of the present invention is to improve the usefulness of observation data of wind conditions observed at wind turbines used for wind power generation. [Means for solving the problem]

[0006] The present invention, which was completed with this object in mind, is an information processing system comprising: acquisition means for acquiring first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine; and second data including wind speed for each wind direction measured over the same period at a second wind turbine installed near the first wind turbine; estimation means for estimating the direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the difference in wind speed for each wind direction, the difference in output, and the difference in power generation amount calculated from the acquired first data and second data; identification means for identifying whether or not there is a difference between the estimated direction and a previously identified direction of the second wind turbine relative to the first wind turbine; and output means for outputting the identified presence or absence of the difference. Here, the estimation means may estimate the direction based on the magnitude of a wake generated between the first wind turbine and the second wind turbine, which is estimated from the degree of change in one or more of the wind speed difference, the output difference, and the power generation amount difference. The estimation means may estimate the direction of the second wind turbine relative to the first wind turbine based on an arithmetic mean value of one or more of the wind speed difference, the output difference, and the power generation amount difference for each predetermined angle in the wind direction from 0 degrees to 360 degrees, over a predetermined wind direction range. The information processing device may further include a calculation means for calculating a correction amount for the wind direction of the first data and the second data based on the difference, and the output means may further output the calculated correction amount. The air conditioner may further comprise a correcting means for correcting the wind direction of the first data and the second data using the calculated correction amount. The correction means may correct the wind directions of the first data and the second data by applying the correction amount to all wind directions of the first data and the second data. The acquisition means may further acquire third data including wind speed for each wind direction measured over the period at a third wind turbine installed near the first wind turbine, the estimation means may further estimate a direction of the third wind turbine relative to the first wind turbine based on the degree of change in one or more of the difference in wind speed, output difference, and power generation amount difference for each wind direction calculated from the first data with the wind direction corrected and the acquired third data, and the output means may further output whether or not there is a difference between the estimated direction and a pre-specified direction of the third wind turbine relative to the first wind turbine. Furthermore, the correction means may be characterized in that, when there is a difference between the estimated direction and a pre-specified direction of the third wind turbine relative to the first wind turbine, the correction means corrects the wind direction of the first data and the second data by applying the correction amount according to the wind direction. The wind turbine may further include a management means for recording and managing the calculated correction amount data, and a generation means for generating information for controlling the operation of the first wind turbine and the second wind turbine based on the recorded and managed correction amount data. The present invention also provides an information processing device comprising: acquisition means for acquiring first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine; and second data including wind speed for each wind direction measured over the same period at a second wind turbine installed near the first wind turbine; estimation means for estimating the direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the difference in wind speed for each wind direction, the difference in output, and the difference in power generation amount calculated from the acquired first data and second data; identification means for identifying whether or not there is a difference between the estimated direction and a previously identified direction of the second wind turbine relative to the first wind turbine; and output means for outputting the identified presence or absence of the difference. The present invention also provides an information processing method comprising the steps of: acquiring first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine; and second data including wind speed for each wind direction measured over the same period at a second wind turbine installed near the first wind turbine; estimating a direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the difference in wind speed for each wind direction, the difference in output, and the difference in power generation amount calculated from the acquired first data and second data; identifying whether or not there is a difference between the estimated direction and a previously identified direction of the second wind turbine relative to the first wind turbine; and outputting the identified presence or absence of the difference. The present invention is also a program for causing a computer to implement the following functions: acquire first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine; and second data including wind speed for each wind direction measured over the same period at a second wind turbine installed near the first wind turbine; estimate the direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the difference in wind speed for each wind direction, the difference in output, and the difference in power generation amount calculated from the acquired first data and second data; identify whether or not there is a difference between the estimated direction and a previously specified direction of the second wind turbine relative to the first wind turbine; and output the identified presence or absence of the difference. [Effects of the Invention]

[0007] According to the present invention, it is possible to improve the usefulness of observation data of wind conditions observed at a wind turbine used for wind power generation. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating an example of the overall configuration of an information processing system to which the present embodiment is applied. [Figure 2] 2 is a diagram illustrating an example of a hardware configuration of a management server that configures the information processing system of FIG. 1. FIG. [Figure 3] FIG. 2 illustrates an example of a functional configuration of a control unit of the management server. [Figure 4] 10 is a flowchart showing an example of a flow of processing up to correction of wind direction in first data and second data, among processing of the management server. [Figure 5] FIG. 1 is a diagram illustrating a specific example of a wind observation device. [Figure 6] FIG. 10 is a diagram showing a specific example of a wake. [Figure 7] FIG. 10 is a diagram showing a specific example of a user interface displayed on a user terminal. [Figure 8] 1 is a graph showing a specific example of the relationship between wind direction and wind speed difference. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. <Configuration of information processing system> FIG. 1 is a diagram showing an example of the overall configuration of an information processing system 1 to which the present embodiment is applied. The information processing system 1 is configured by connecting a management server 10, wind condition observation devices 30-1 to 30-n (n is an integer value of 1 or greater) that observe wind conditions, and a user terminal 50 via a network 90. ​​The network 90 is, for example, a local area network (LAN) or the Internet. Hereinafter, when there is no need to explain each of the wind condition observation devices 30-1 to 30-n individually, they will be collectively referred to as the "wind condition observation device 30."

[0010] (Management Server 10) The management server 10 constituting the information processing system 1 is an information processing device that serves as a server for managing the entire information processing system 1. The management server 10 acquires observation data related to wind conditions observed by each of the wind condition observation devices 30-1 to 30-n installed on each of n wind turbines that generate wind power. In this embodiment, it is assumed that three wind turbines (first to third wind turbines) are installed, and each of the wind turbines is equipped with a wind condition observation device 30-1 to 30-3. Hereinafter, the observation data related to wind conditions observed by the wind condition observation device 30 installed on the wind turbines will be referred to as "wind turbine observation data." The wind turbine observation data includes wind speeds for each wind direction of wind blowing toward the wind turbine on which the wind condition observation device 30 is installed, recorded at predetermined time intervals. The "predetermined time" is, for example, 10 minutes.

[0011] The management server 10 acquires wind turbine observation data measured over a predetermined period at each of the three wind turbines. The "predetermined period" is, for example, one year. The management server 10 acquires first data as wind turbine observation data measured at the first wind turbine. The management server 10 also acquires second data as wind turbine observation data measured at a second wind turbine installed near the first wind turbine. The management server 10 also acquires third data as wind turbine observation data measured at a third wind turbine installed near the first wind turbine.

[0012] The management server 10 calculates one or more of the wind speed difference, output difference, and power generation difference for each wind direction from the acquired first data and second data. In this embodiment, the wind speed difference for each wind direction is calculated. The management server 10 then estimates the direction of the second wind turbine relative to the first wind turbine based on the calculated degree of change in the wind speed difference for each wind direction. Specifically, the management server 10 estimates the direction of the second wind turbine relative to the first wind turbine based on the magnitude of the wake generated between the first and second wind turbines, which is estimated from the calculated degree of change in the wind speed difference for each wind direction. The "wake" refers to the effect of attenuation and turbulence of the inflow wind caused by the rotation of the blades of the second wind turbine installed near the first wind turbine. Hereinafter, the direction of the second wind turbine relative to the first wind turbine estimated by the management server 10 based on the wind turbine observation data will be referred to as the "estimated direction."

[0013] The management server 10 acquires information (hereinafter referred to as "wind turbine position information") relating to the locations where each of the three wind turbines (first to third wind turbines) is installed. The wind turbine position information is, for example, GPS (Global Positioning System) position information. The wind turbine position information is provided to the management server 10 from, for example, a user terminal 50 or an external server (not shown). The management server 10 identifies the correct direction of the second wind turbine relative to the first wind turbine based on the acquired wind turbine position information. Hereinafter, the correct direction of the second wind turbine relative to the first wind turbine and the correct direction of the third wind turbine relative to the first wind turbine identified by the management server 10 based on the wind turbine position information will be referred to as the "correct direction".

[0014] The management server 10 determines whether there is a difference between the estimated direction and the normal direction and outputs the result. For example, the management server 10 determines whether there is a difference between the estimated direction and the normal direction using a graph that shows the relationship between wind direction and wind speed difference and outputs the result. The management server 10 also calculates a wind direction correction amount based on the difference between the estimated direction and the normal direction. The management server 10 applies the calculated wind direction correction amount to all wind directions in each of the first data and the second data, thereby correcting and outputting the wind direction in the first data and the second data.

[0015] The management server 10 calculates the difference in wind speed for each wind direction from the first data with the corrected wind direction and the acquired third data. Then, the management server 10 estimates and outputs an estimated direction of the third wind turbine relative to the first wind turbine based on the degree of change in the calculated difference in wind speed for each wind direction. Furthermore, the management server 10 identifies and outputs the normal direction of the third wind turbine relative to the first wind turbine based on the wind turbine position information.

[0016] The management server 10 identifies and outputs whether there is a difference between the estimated direction of the third wind turbine relative to the first wind turbine and the normal direction of the third wind turbine relative to the first wind turbine. In this case, if there is a difference between the estimated direction and the normal direction, the management server 10 corrects the wind direction of the first data and the second data by applying the calculated wind direction correction amount according to the wind direction of each of the first data and the second data. In other words, for errors that are offset uniformly, the management server 10 corrects the wind direction data by applying the calculated correction amount to all wind directions. On the other hand, for errors that are not offset uniformly, the management server 10 corrects the wind direction data by applying the calculated correction amount according to the wind direction.

[0017] The management server 10 stores and manages the calculated data on the amount of wind direction correction in a database. Then, the management server 10 generates and outputs information for controlling the operation of the first and second wind turbines (hereinafter referred to as "operation control information") based on the data on the amount of wind direction correction stored and managed in the database. The configuration and processing of the management server 10 will be described in detail later.

[0018] (Wind Condition Observation Device 30) The wind condition observation device 30 that constitutes the information processing system 1 is a device provided for each wind turbine and observes the wind conditions blowing at the wind turbine. The wind turbine observation data observed by the wind condition observation device 30 includes wind speeds for each wind direction recorded at predetermined time intervals. In this embodiment, the "wind direction" refers to the wind direction from 0 degrees to 360 degrees.

[0019] The wind condition observation device 30 transmits the wind turbine observation data that it has observed to the management server 10. There are no particular limitations on the timing at which the wind condition observation device 30 transmits the wind turbine observation data to the management server 10. For example, the wind turbine observation data may be transmitted in real time, or may be transmitted every predetermined time (second, minute, day, week, month, year, etc.). Furthermore, the wind turbine observation data may be transmitted in response to an inquiry from the management server 10 regarding the provision of wind turbine observation data.

[0020] (User terminal 50) The user terminal 50 constituting the information processing system 1 is an information processing device such as a personal computer, smartphone, or tablet terminal operated by a user who uses the information processing system 1. The user terminal 50 transmits information input by the user to the management server 10. Examples of information input by the user and transmitted to the management server 10 include inquiry information input to inquire about various types of information from the management server 10, wind turbine information, and the like.

[0021] Furthermore, the user terminal 50 acquires various pieces of information transmitted from the management server 10 and displays them on a display or the like. For example, the user terminal 50 acquires and displays the above-mentioned information transmitted from the management server 10 based on the above-mentioned inquiry information.

[0022] The configuration of the information processing system 1 described above is merely an example, and it is sufficient that the information processing system 1 as a whole has the functions to realize the above-described processing. Therefore, some or all of the functions to realize the above-described processing may be shared among the devices in the information processing system 1, or the devices may cooperate with each other. For example, some or all of the functions of the management server 10 may be functions of the wind condition observation device 30 or the user terminal 50. Furthermore, some or all of the functions of the management server 10, the wind condition observation device 30, and the user terminal 50 that make up the information processing system 1 may be transferred to another server (not shown), etc. This promotes processing by the information processing system 1 as a whole, and also enables the processes to complement each other.

[0023] <Hardware configuration of management server 10> FIG. 2 is a diagram illustrating an example of a hardware configuration of the management server 10 that constitutes the information processing system 1 of FIG. The management server 10 has a control unit 11, a memory 12, a storage unit 13, a communication unit 14, an operation unit 15, and a display unit 16. These units are connected by a data bus, an address bus, a PCI (Peripheral Component Interconnect) bus, etc.

[0024] The control unit 11 is a processor that controls the functions of the management server 10 through the execution of various software such as an OS (operating system) and application software. The control unit 11 is configured, for example, by a CPU (Central Processing Unit). The memory 12 is a storage area that stores various software and data used for executing the software, and is used as a working area for calculations. The memory 12 is configured, for example, by a RAM (Random Access Memory).

[0025] The storage unit 13 is a storage area that stores input data for various software programs and output data from various software programs. The storage unit 13 is configured with, for example, a hard disk drive (HDD), a solid state drive (SSD), a semiconductor memory, etc. that are used to store programs and various setting data. The storage unit 13 is provided with databases that store various types of data. For example, the storage unit 13 stores a wind turbine observation DB 131 that stores wind turbine observation data, a correction amount DB 132 that stores data on wind direction correction amounts, a wind turbine position DB 133 that stores wind turbine position information, etc.

[0026] The communication unit 14 transmits and receives data to and from the wind condition observation device 30, the user terminal 50, and the outside world via the network 90. ​​The operation unit 15 is composed of, for example, a keyboard, a mouse, mechanical buttons, and switches, and accepts input operations. The operation unit 15 also includes a touch sensor that forms a touch panel integrally with the display unit 16. The display unit 16 is composed of, for example, a liquid crystal display or an organic EL (Electro Luminescence) display used to display information, and displays images, text data, and the like.

[0027] <Hardware configuration of the wind condition observation device 30 and the user terminal 50> The wind condition observation device 30 and the user terminal 50 can both have a configuration similar to the hardware configuration of the management server 10 shown in Fig. 2. That is, the wind condition observation device 30 and the user terminal 50 can each have a control unit, memory, storage unit, communication unit, operation unit, and display unit similar to the control unit 11, memory 12, storage unit 13, communication unit 14, operation unit 15, and display unit 16 of the management server 10 shown in Fig. 2. For this reason, illustrations and descriptions of the hardware configurations of the wind condition observation device 30 and the user terminal 50 will be omitted.

[0028] <Functional Configuration of the Control Unit 11 of the Management Server 10> FIG. 3 is a diagram illustrating an example of the functional configuration of the control unit 11 of the management server 10. As shown in FIG. The control unit 11 of the management server 10 functions as a management unit 101 as a management means, an acquisition unit 102 as an acquisition means, an estimation unit 103 as an estimation means, an identification unit 104 as an identification means, a calculation unit 105 as a calculation means, a correction unit 106 as a correction means, a generation unit 107 as a generation means, and a transmission control unit 108 as an output means.

[0029] The management unit 101 stores and manages various types of data in various databases provided in the storage unit 13 (see FIG. 2). For example, the management unit 101 stores and manages wind turbine observation data in a wind turbine observation DB 131. The management unit 101 also stores and manages data on the amount of wind direction correction in a correction amount DB 132. The management unit 101 also stores and manages wind turbine position information in a wind turbine position DB 133.

[0030] The acquisition unit 102 acquires various types of information transmitted to the management server 10. For example, the acquisition unit 102 acquires wind turbine observation data transmitted from each of the wind condition observation devices 30-1 to 30-n. For example, the acquisition unit 102 acquires first data as wind turbine observation data transmitted from the wind condition observation device 30-1 installed in the first wind turbine. Furthermore, for example, the acquisition unit 102 acquires second data as wind turbine observation data transmitted from the wind condition observation device 30-2 installed in the second wind turbine. Furthermore, for example, the acquisition unit 102 acquires third data as wind turbine observation data transmitted from the wind condition observation device 30-3 installed in the third wind turbine.

[0031] The acquisition unit 102 also acquires wind turbine position information for each of the three wind turbines (first to third wind turbines) transmitted from the user terminal 50 or an external server, etc. In other words, the wind turbine position information includes wind turbine position information for the first wind turbine, wind turbine position information for the second wind turbine, and wind turbine position information for the third wind turbine. The acquisition unit 102 also acquires various types of inquiry information transmitted from the user terminal 50.

[0032] The estimation unit 103 estimates the estimated direction of the second wind turbine relative to the first wind turbine. Specifically, the estimation unit 103 calculates the difference in wind speed for each wind direction from the acquired first data and second data, and estimates the estimated direction of the second wind turbine relative to the first wind turbine based on the calculated degree of change in the difference in wind speed for each wind direction. More specifically, the estimation unit 103 estimates the direction of the second wind turbine relative to the first wind turbine based on the magnitude of the wake generated between the first and second wind turbines, which is estimated from the calculated degree of change in the difference in wind speed for each wind direction.

[0033] The estimation unit 103 also estimates the estimated direction of the third wind turbine relative to the first wind turbine. Specifically, the estimation unit 103 calculates the wind speed difference for each wind direction from the first data corrected by the correction unit 106 (described below) and the third data acquired by the acquisition unit 102. The estimation unit 103 then estimates the estimated direction of the third wind turbine relative to the first wind turbine based on the calculated degree of change in the wind speed difference for each wind direction. More specifically, the estimation unit 103 estimates the estimated direction of the third wind turbine relative to the first wind turbine based on the magnitude of the wake generated between the first and third wind turbines, which is estimated from the calculated degree of change in the wind speed difference for each wind direction.

[0034] The method by which the estimation unit 103 estimates the estimated direction of the second wind turbine relative to the first wind turbine and the estimated direction of the third wind turbine relative to the first wind turbine is not particularly limited. For example, the estimation unit 103 may estimate the estimated direction of the second wind turbine relative to the first wind turbine and the estimated direction of the third wind turbine relative to the first wind turbine based on an arithmetic mean of the difference in wind speed for each predetermined angle in the wind direction from 0 degrees to 360 degrees, over a predetermined wind direction width. In this embodiment, the estimation unit 103 estimates the estimated direction of the second wind turbine relative to the first wind turbine and the estimated direction of the third wind turbine relative to the first wind turbine based on an arithmetic mean of the difference in wind speed for each degree in the wind direction from 0 degrees to 360 degrees, over a predetermined wind direction width. Note that the "predetermined angle of the wind direction" may also include an angle expressed in decimal values.

[0035] The identifying unit 104 identifies the normal direction of the second wind turbine relative to the first wind turbine based on the wind turbine position information of the first wind turbine and the wind turbine position information of the second wind turbine. Furthermore, the identifying unit 104 identifies the normal direction of the third wind turbine relative to the first wind turbine based on the wind turbine position information of the first wind turbine and the wind turbine position information of the third wind turbine.

[0036] The identifying unit 104 identifies whether or not there is a difference between the estimated direction of the second wind turbine relative to the first wind turbine and the normal direction of the second wind turbine relative to the first wind turbine. The identifying unit 104 also identifies whether or not there is a difference between the estimated direction of the third wind turbine relative to the first wind turbine and the normal direction of the third wind turbine relative to the first wind turbine. For example, the identifying unit 104 identifies whether or not there is a difference between the estimated direction and the normal direction based on the relationship between wind direction and wind speed difference. A specific example of the relationship between wind direction and wind speed difference will be described later with reference to the graph in FIG. 8.

[0037] The calculation unit 105 calculates the amount of correction for the wind direction of the first data and the second data based on the difference between the estimated direction of the second wind turbine relative to the first wind turbine and the normal direction of the second wind turbine relative to the first wind turbine. The calculation unit 105 also calculates the amount of correction for the wind direction of the first data and the second data based on the difference between the estimated direction of the third wind turbine relative to the first wind turbine based on the first data corrected by the correction unit 106, which will be described later, and the normal direction of the third wind turbine relative to the first wind turbine.

[0038] The correction unit 106 corrects the wind direction of the first data and the second data by applying the wind direction correction amount calculated by the calculation unit 105 to all wind directions in each of the first data and the second data. Furthermore, if there is a difference between the estimated direction of the third wind turbine relative to the first wind turbine and the normal direction of the third wind turbine relative to the first wind turbine, the correction unit 106 corrects the wind direction of the first data and the second data by applying the calculated wind direction correction amount in accordance with the wind direction in each of the first data and the second data.

[0039] For example, suppose that the calculated correction amount is "+5" degrees when the value indicating the normal direction of the third wind turbine relative to the first wind turbine is 0 degrees, and the calculated correction amount is "-5" degrees when the value indicating the normal direction of the third wind turbine relative to the second wind turbine is 120 degrees. In this case, the correction unit 106 performs a linear interpolation correction so that "+5" degrees becomes "-5" degrees for wind directions between 0 degrees and 120 degrees, and performs a linear interpolation correction so that "-5" degrees becomes "+5" degrees for wind directions between 120 degrees and 360 degrees.

[0040] The generation unit 107 generates various types of information. For example, the generation unit 107 generates operation control information for the first and second wind turbines based on data on the amount of wind direction correction stored and managed in a database.

[0041] The transmission control unit 108 controls the transmission of various information via the communication unit 14 (see FIG. 2). For example, the transmission control unit 108 controls the transmission of information such as the estimated direction, the normal direction, and the wind direction correction amount to the user terminal 50.

[0042] <Management Server Processing Flow> Fig. 4 is a flowchart showing an example of the flow of processing up to the correction of the wind direction of the first data and the second data, among the processing of the management server 10. In the example of Fig. 4, it is assumed that an error has occurred as if a uniform offset has been applied to the wind direction of the first data and the second data. When wind turbine observation data is transmitted from the wind condition observation device 30 (YES in step 401), the management server 10 acquires the transmitted wind turbine observation data (step 402) and stores and manages the acquired wind turbine observation data in a database (for example, the wind turbine observation DB 131 in FIG. 2) (step 403). On the other hand, if no wind turbine observation data has been transmitted from the wind condition observation device 30 (NO in step 401), the management server 10 repeats step 401 until wind turbine observation data is transmitted from the wind condition observation device 30.

[0043] The management server 10 calculates the difference in wind speed for each wind direction from the acquired first data and second data (step 404). Then, the management server 10 estimates the estimated direction of the second wind turbine relative to the first wind turbine based on the degree of change in the calculated difference in wind speed for each wind direction (step 405).

[0044] When wind turbine position information is transmitted from the wind condition observation device 30 (YES in step 406), the management server 10 acquires the transmitted wind turbine position information (step 407) and stores and manages the acquired wind turbine position information in a database (for example, the wind turbine position DB 133 in FIG. 2) (step 408). On the other hand, if wind turbine position information has not been transmitted from the wind condition observation device 30 (NO in step 406), the management server 10 repeats step 406 until wind turbine position information is transmitted from the wind condition observation device 30.

[0045] The management server 10 identifies the normal direction of the second wind turbine relative to the first wind turbine based on the wind turbine position information acquired in step 407 (step 409).

[0046] The management server 10 determines whether there is a difference between the estimated direction and the normal direction (step 410). If there is a difference between the estimated direction and the normal direction (YES in step 411), the management server 10 calculates a correction amount for the wind direction based on the difference between the estimated direction and the normal direction (step 412), and corrects the wind direction of the first data and the second data by applying the calculated correction amount to all wind directions (step 413). On the other hand, if there is no difference between the estimated direction and the normal direction (NO in step 411), the management server 10 ends the process (END).

[0047] <Example> FIG. 5 is a diagram showing a specific example of the wind condition observation device 30. As described above, the wind condition observation device 30 is a device provided for each wind turbine and observes the wind conditions blowing at the wind turbine. As the wind condition observation device 30, for example, an ultrasonic anemometer that measures wind direction and speed based on the amount of change in the speed of sound that changes depending on the wind speed, or an arrow-type anemometer that changes the direction of the arrow vane depending on the wind direction, is used.

[0048] 5 shows an example of an ultrasonic anemometer as the wind condition observation device 30-1 installed on the outer wall surface of a nacelle 521 of a wind turbine 501. The wind condition observation device 30-1 shown in FIG. 5 is capable of measuring wind direction and speed based on the amount of change in the speed of sound, which changes depending on the wind speed of the wind blowing through the wind turbine 501. The wind turbine observation data observed by the wind condition observation device 30-1 includes wind speeds for each wind direction from 0 degrees to 360 degrees, recorded at predetermined time intervals. The wind condition observation device 30-1 transmits the wind turbine observation data it has observed to the management server 10 (see FIG. 1).

[0049] The main purpose of the wind condition observation device 30-1 installed on the wind turbine 501 is to control the operation of the wind turbine 501 during strong winds, and so emphasis is placed on aspects such as resilience to strong winds and weather resistance rather than on the accuracy of wind observation. For this reason, in order to improve the usefulness of the wind turbine observation data observed by the wind condition observation device 30-1, it is necessary to improve the accuracy of the observation data. For this reason, when the wind turbine 501 is the first wind turbine, the wind turbine observation data (first data) of the wind condition observation device 30-1 is corrected as necessary by the above-mentioned processing that takes wake into account, thereby improving the accuracy.

[0050] FIG. 6 is a diagram showing a specific example of a wake. Figure 6 shows wind turbine 501 as the first wind turbine shown in Figure 5 above. Also shown near wind turbine 501 is wind turbine 502 as the second wind turbine. An ultrasonic anemometer as wind condition observation device 30-2 is provided on the outer wall surface of nacelle 522 of wind turbine 502. Wind turbine observation data observed by wind condition observation device 30-2 is sent to management server 10 (see Figure 1).

[0051] 6, the incoming wind flowing into wind turbine 502 generates a wake due to the rotation of blades 512 of wind turbine 502, and the incoming wind including the wake flows into wind turbine 501. Furthermore, the incoming wind flowing into wind turbine 501 generates a wake due to the rotation of blades 511 of wind turbine 501. For this reason, the wind turbine observation data (first data) from wind condition observation device 30-1 and the wind turbine observation data (second data) from wind condition observation device 30-2 include the effects of the wake. For this reason, the wind turbine observation data (first data) from wind condition observation device 30-1 when wind turbine 501 is the first wind turbine, and the wind turbine observation data (second data) from wind condition observation device 30-2 when wind turbine 502 is the second wind turbine, are corrected as necessary by the above-mentioned processing that takes the wake into account.

[0052] FIG. 7 is a diagram showing a specific example of a user interface displayed on the user terminal 50. As shown in FIG. The user interface shown in Fig. 7 displays an image (hereinafter referred to as an "area image") captured from above of an area where wind turbine 501 as the first wind turbine and wind turbine 502 as the second wind turbine shown in Fig. 6 above are installed. Also displayed superimposed on the area image is a dialog box 200 labeled "ruler." Dialog box 200 is a dialog box that enables the use of a tool for displaying, on the area image, either the direction of wind turbine 502 relative to wind turbine 501 or the direction of wind turbine 501 relative to wind turbine 502.

[0053] The user draws a straight line L1 connecting windmill 501 and windmill 502 by performing a drag operation on the region image, etc. Then, information such as the normal direction of windmill 502 relative to windmill 501, or the normal direction of windmill 501 relative to windmill 502, and the distance between windmill 501 and windmill 502, which is specified based on the windmill position information of each of windmills 501 and 502, is displayed in dialog box 200. Dialog box 200 in Fig. 7 shows that the normal direction of windmill 502 relative to windmill 501 is "201.11" degrees.

[0054] Of the inflow winds blowing toward wind turbine 502, the inflow wind with a wind direction of 201.11 degrees is attenuated and disturbed by the wake generated between wind turbines 501 and 502, as shown in Fig. 7. For this reason, the wind turbine observation data (first data) of wind condition observation device 30-1 installed on wind turbine 501 will have the most attenuated wind speed when the wind direction is 201.11 degrees, provided that no errors have occurred.

[0055] Fig. 8 is a graph showing a specific example of the relationship between wind direction and wind speed difference. The graph shown in Fig. 8 shows the wind speed difference between wind turbine 501 and wind turbine 502 shown in Figs. 6 and 7 above. As described above, the management server 10 (see FIG. 1) identifies whether there is a difference between the estimated direction and the normal direction based on the relationship between the wind direction and the wind speed difference. The graph shown in FIG. 8 is a graph in which the horizontal axis represents the wind direction (wind direction (deg)) from 0 degrees to 360 degrees and the vertical axis represents the wind speed difference (wind speed difference (m / s)) over a predetermined period. The values ​​plotted on the graph in FIG. 8 are the arithmetic mean of the wind speed difference between the wind turbine 501 and the wind turbine 502 over a predetermined wind direction width (for example, an angle of 2 degrees) for each degree of the wind direction from 0 degrees to 360 degrees.

[0056] In the graph shown in Fig. 8, the wind direction with the largest difference in wind speed is 197 degrees (deg), and this value is the estimated direction of wind turbine 502 relative to wind turbine 501. In contrast, according to the data based on the normal direction shown in Fig. 7 above, the wind speed is at its lowest when the wind direction is 201.11 degrees, resulting in an error of -4.11 degrees. Therefore, management server 10 calculates the amount of correction (+4.11 degrees) for the wind direction of the first data and the second data based on the difference (-4.11 degrees) between the estimated direction of the second wind turbine relative to the first wind turbine (197 degrees) and the normal direction of the second wind turbine relative to the first wind turbine (201.11 degrees).

[0057] In summary, the information processing system 1 (see FIG. 1) according to this embodiment only needs to have the following configuration, and can take on a variety of different embodiments. That is, the information processing system 1 is an information processing system characterized by having an acquisition unit 102 (see Figure 3) of the management server 10 as acquisition means for acquiring first data including wind speed for each wind direction measured at a first wind turbine over a predetermined period (for example, one year) and second data including wind speed for each wind direction measured at a second wind turbine installed near the first wind turbine over a predetermined period; an estimation unit 103 (see Figure 3) of the management server 10 as estimation means for estimating an estimated direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the wind speed difference, output difference, and power generation difference for each wind direction calculated from the acquired first data and second data; an identification unit 104 (see Figure 3) of the management server 10 as identification means for identifying whether or not there is a difference between the estimated estimated direction and a previously identified normal direction of the second wind turbine relative to the first wind turbine; and a transmission control unit 108 (see Figure 3) of the management server 10 as output means for outputting the identified presence or absence of a difference.

[0058] This allows an estimated direction of the second wind turbine relative to the first wind turbine to be estimated based on the degree of change in one or more of the wind speed difference, output difference, and power generation difference for each wind direction calculated from the acquired first data and second data. Then, whether or not there is a difference between the estimated direction and the normal direction of the second wind turbine relative to the first wind turbine, which has been determined in advance, is identified and output. As a result, it becomes possible to correct the first data and the second data based on the difference between the estimated direction and the normal direction, improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0059] Here, the estimation unit 103 may be characterized in that it estimates the estimated direction of the second wind turbine relative to the first wind turbine based on the magnitude of the wake generated between the first wind turbine and the second wind turbine, which is estimated from the degree of change in one or more of the wind speed difference, the output difference, and the power generation amount difference. This allows the estimated direction of the second wind turbine relative to the first wind turbine to be estimated based on the magnitude of the wake generated between the first and second wind turbines. As a result, it becomes possible to correct the first data and second data based on the difference between the estimated direction and the normal direction, improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0060] The estimation unit 103 may also be characterized in that it estimates the estimated direction of the second wind turbine relative to the first wind turbine based on an arithmetic mean value of one or more of the wind speed difference, output difference, and power generation difference for each predetermined angle in the wind direction from 0 degrees to 360 degrees, over a predetermined wind direction width (for example, an angle of 2 degrees). This allows the estimated direction of the second wind turbine relative to the first wind turbine to be estimated based on the arithmetic mean, over a predetermined wind direction range, of one or more of the wind speed difference, output difference, and power generation difference for each predetermined angle in the wind direction from 0 to 360 degrees. As a result, it becomes possible to correct the first data and second data based on the difference between the estimated direction and the normal direction, improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0061] The management server 10 may further include a calculation unit 105 (see FIG. 3) as a calculation means for calculating the amount of wind direction correction for the first data and the second data based on the difference between the estimated direction and the normal direction, and the transmission control unit 108 may further control the transmission of the calculated amount of correction to the user terminal 50. This allows the amount of wind direction correction for the first data and the second data to be calculated based on the difference between the estimated direction and the normal direction, which makes it possible to correct the first data and the second data using the amount of correction, thereby improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0062] The management server 10 may further include a correction unit 106 (see FIG. 3) as a correction unit for correcting the wind direction of the first data and the second data based on the calculated correction amount. This makes it possible to correct the wind direction of the first data and the second data using the calculated correction amount, thereby improving the usefulness of observation data of wind conditions observed at a wind turbine used for wind power generation.

[0063] The correction unit 106 may also be characterized in that it corrects the wind directions of the first data and the second data by applying the calculated correction amount to all wind directions of each of the first data and the second data. This applies the correction amount to all wind directions in the first data and the second data, correcting the wind directions in the first data and the second data. As a result, errors that appear as if an offset had been applied across the board are corrected, improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0064] The acquisition unit 102 may further acquire third data including wind speed for each wind direction measured over a pre-specified period at a third wind turbine installed near the first wind turbine, the estimation unit 103 may further estimate the direction of the third wind turbine relative to the first wind turbine based on the degree of change in one or more of the wind speed difference, output difference, and power generation difference for each wind direction calculated from the first data with the corrected wind direction and the acquired third data, and the transmission control unit 108 may further control the transmission to the user terminal 50 of whether or not there is a difference between the estimated direction and the pre-specified normal direction of the third wind turbine relative to the first wind turbine. As a result, if there is a difference between the estimated direction of the third wind turbine relative to the first wind turbine and the normal direction of the third wind turbine relative to the first wind turbine, the calculated wind direction correction amount is applied according to the wind direction in each of the first data and the second data. As a result, it becomes possible to correct errors that are not caused by a uniform offset, improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0065] Furthermore, the correction unit 106 may be characterized in that, when there is a difference between the estimated direction and a predetermined normal direction of the third wind turbine relative to the first wind turbine, the correction unit 106 corrects the wind direction of the first data and the second data by applying a correction amount according to the wind direction. As a result, if there is a difference between the estimated direction of the third wind turbine relative to the first wind turbine and the normal direction of the third wind turbine relative to the first wind turbine, the calculated wind direction correction amount is applied according to the wind direction in each of the first data and the second data. As a result, it becomes possible to correct errors that are not caused by a uniform offset, improving the usefulness of observation data on wind conditions observed at wind turbines used for wind power generation.

[0066] The system may further include a management unit 101 of the management server 10 as a management means for recording and managing the calculated correction amount data, and a generation unit 107 of the management server 10 as a generation means for generating information for controlling the operation of the first wind turbine and the second wind turbine based on the recorded and managed correction amount data. This generates information for controlling the operation of the first and second wind turbines based on the recorded and managed correction amount data, making it possible to control the operation of the wind turbines for the next month, for example, based on the correction amount data for the past month.

[0067] Furthermore, the management server 10 (see FIG. 1) as the information processing device according to this embodiment only needs to have the following configuration, and can take on a variety of different embodiments. In other words, the management server 10 is an information processing device characterized by having an acquisition unit 102 of the management server 10 as acquisition means for acquiring first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine and second data including wind speed for each wind direction measured over a predetermined period at a second wind turbine installed near the first wind turbine; an estimation unit 103 of the management server 10 as estimation means for estimating an estimated direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the wind speed difference, output difference, and power generation difference for each wind direction calculated from the acquired first data and second data; an identification unit 104 of the management server 10 as identification means for identifying whether or not there is a difference between the estimated estimated direction and a previously identified normal direction of the second wind turbine relative to the first wind turbine; and a transmission control unit 108 of the management server 10 as output means for outputting the identified presence or absence of a difference.

[0068] Furthermore, the information processing method according to this embodiment only needs to have the following configuration, and can take on a variety of different embodiments. That is, the information processing method includes the steps of: acquiring first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine; and second data including wind speed for each wind direction measured over a predetermined period at a second wind turbine installed near the first wind turbine; estimating an estimated direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the wind speed difference, output difference, and power generation difference for each wind direction calculated from the acquired first data and second data; identifying whether or not there is a difference between the estimated estimated direction and a previously identified normal direction of the second wind turbine relative to the first wind turbine; and outputting the identified presence or absence of a difference.

[0069] The program according to this embodiment may have the following configuration, and may take various forms. In other words, the program enables the management server 10 as a computer to perform the following functions: acquire first data including wind speed for each wind direction measured over a predetermined period at a first wind turbine; and second data including wind speed for each wind direction measured over a predetermined period at a second wind turbine installed near the first wind turbine; estimate the estimated direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of the wind speed difference, output difference, and power generation difference for each wind direction calculated from the acquired first data and second data; identify whether or not there is a difference between the estimated estimated direction and the previously identified normal direction of the second wind turbine relative to the first wind turbine; and output the identified difference.

[0070] <Other embodiments> Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment. Furthermore, the effects of the present invention are not limited to those described in the above-described embodiment. For example, the configuration of the information processing system 1 shown in FIG. 1, the hardware configuration of the management server 10 shown in FIG. 2, and the functional configuration of the control unit 11 of the management server 10 shown in FIG. 3 are merely examples for achieving the object of the present invention and are not particularly limited. It is sufficient that the information processing system 1 of FIG. 1 is provided with a function that can execute the above-described processing as a whole, and the hardware configuration and functional configuration used to realize this function are not limited to the above-described examples.

[0071] Furthermore, the order of the steps of the processing of the management server 10 shown in Figure 4 is merely an example and is not particularly limited. The processing is not limited to being performed in chronological order according to the order of the steps shown in the figure, and may be performed in parallel or individually, without necessarily being chronologically processed. Furthermore, the specific examples shown in Figures 5 to 8 are also merely examples and are not particularly limited. For example, the information displayed in the dialog box 200 in Figure 7 is merely an example, and any information other than the information shown in Figure 7 can be displayed.

[0072] Furthermore, in the above embodiment, the explanation is given on the assumption that three wind turbines (first to third wind turbines) are installed as a specific example of n wind turbines, but the number of wind turbines is not limited to three and may be four or more, or may be 2. For example, if there are ten wind turbines installed in one area, the present invention may be applied by designating one of the ten wind turbines designated by the user as the first wind turbine, and the wind turbine installed near the first wind turbine as the second wind turbine or the third wind turbine. [Explanation of symbols]

[0073] 1...information processing system, 10...management server, 11...control unit, 12...memory, 13...storage unit, 14...communication unit, 15...operation unit, 16...display unit, 30...wind condition observation device, 50...user terminal, 101...management unit, 102...acquisition unit, 103...estimation unit, 104...identification unit, 105...calculation unit, 106...correction unit, 107...generation unit, 108...transmission control unit, 90...network

Claims

1. an acquisition means for acquiring first data including wind speeds for each wind direction measured by a first wind turbine over a predetermined period of time, and second data including wind speeds for each wind direction measured by a second wind turbine installed near the first wind turbine over the same period of time; an estimation means for estimating a direction of the second wind turbine relative to the first wind turbine based on a degree of change in one or more of a wind speed difference, an output difference, and a power generation amount difference for each wind direction calculated from the acquired first data and second data; and an identification means for identifying whether there is a difference between the estimated direction and a pre-identified direction of the second wind turbine relative to the first wind turbine; an output means for outputting the presence or absence of the identified difference; An information processing system comprising:

2. the estimation means estimates the direction based on a magnitude of a wake generated between the first wind turbine and the second wind turbine, the magnitude being estimated from a degree of change in one or more of the wind speed difference, the output difference, and the power generation amount difference. The information processing system according to claim 1 .

3. the estimation means estimates the direction of the second wind turbine relative to the first wind turbine based on an arithmetic mean value of one or more of a wind speed difference, an output difference, and a power generation amount difference for each predetermined angle in the wind direction from 0 degrees to 360 degrees, over a predetermined wind direction range. The information processing system according to claim 2 .

4. The method further includes a calculation unit that calculates a wind direction correction amount for the first data and the second data based on the difference, The output means further outputs the calculated correction amount. The information processing system according to claim 1 .

5. The wind direction sensor further comprises a correction unit that corrects the wind direction of the first data and the second data using the calculated correction amount. The information processing system according to claim 4 .

6. the correction means corrects the wind directions of the first data and the second data by applying the correction amount to all wind directions of each of the first data and the second data. The information processing system according to claim 5 .

7. the acquisition means further acquires third data including wind speeds for each wind direction measured over the period by a third wind turbine installed near the first wind turbine; the estimation means further estimates a direction of the third wind turbine relative to the first wind turbine based on a degree of change in one or more of a wind speed difference, an output difference, and a power generation amount difference for each wind direction calculated from the first data in which the wind direction has been corrected and the acquired third data; and the output means further outputs whether there is a difference between the estimated direction and a pre-specified direction of the third wind turbine relative to the first wind turbine. The information processing system according to claim 5 .

8. the correction means corrects the wind direction of the first data and the second data by applying the correction amount according to the wind direction when there is a difference between the estimated direction and a pre-specified direction of the third wind turbine relative to the first wind turbine. The information processing system according to claim 7 .

9. a management means for recording and managing the calculated correction amount data; a generation means for generating information for controlling the operation of the first wind turbine and the second wind turbine based on the recorded and managed data of the correction amount; 6. The information processing system according to claim 5, further comprising:

10. an acquisition means for acquiring first data including wind speeds for each wind direction measured by a first wind turbine over a predetermined period of time, and second data including wind speeds for each wind direction measured by a second wind turbine installed near the first wind turbine over the same period of time; an estimation means for estimating a direction of the second wind turbine relative to the first wind turbine based on a degree of change in one or more of a wind speed difference, an output difference, and a power generation amount difference for each wind direction calculated from the acquired first data and second data; and an identification means for identifying whether there is a difference between the estimated direction and a pre-identified direction of the second wind turbine relative to the first wind turbine; an output means for outputting the presence or absence of the identified difference; An information processing device comprising:

11. acquiring first data including wind speeds for each wind direction measured by a first wind turbine over a predetermined period of time, and second data including wind speeds for each wind direction measured by a second wind turbine installed near the first wind turbine over the same period of time; estimating a direction of the second wind turbine relative to the first wind turbine based on a degree of change in one or more of a wind speed difference, an output difference, and a power generation amount difference for each wind direction calculated from the acquired first data and second data; determining whether there is a difference between the estimated direction and a pre-determined direction of the second wind turbine relative to the first wind turbine; outputting the presence or absence of the identified difference; An information processing method comprising:

12. On the computer, a function of acquiring first data including wind speeds for each wind direction measured by a first wind turbine over a predetermined period of time, and second data including wind speeds for each wind direction measured by a second wind turbine installed near the first wind turbine over the same period of time; a function of estimating the direction of the second wind turbine relative to the first wind turbine based on the degree of change in one or more of a wind speed difference, an output difference, and a power generation amount difference for each wind direction calculated from the acquired first data and second data; and a function of identifying whether there is a difference between the estimated direction and a pre-identified direction of the second wind turbine relative to the first wind turbine; a function of outputting the presence or absence of the identified difference; A program to achieve this.

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