Control support system for wind turbine generator and control support method for wind turbine generator

Abstract

To provide a control support system of a wind power generation device and a control support method of the wind power generation device capable of minimizing component damage and maximizing a power generation amount.SOLUTION: A control support system 1 for a wind power generation device includes at least one wind power generation device 101 and an arithmetic processing unit 104, and the arithmetic processing unit 104 includes a damage database creation unit 108 that creates a database of a degree of damage that occurs in the wind power generation device 101 with respect to a wind condition parameter, and a wind speed threshold value calculation unit 112 for each wind direction that calculates a wind speed threshold value for operating the wind turbine power generating apparatus 101 for each wind direction, based on the usage period of the wind turbine power generating apparatus 101 and the upper limit value of the degree of damage.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a control support system for a wind turbine generator and a control support method for a wind turbine generator. [Background technology]

[0002] As a measure against global warming, renewable energy sources such as wind, hydro, and solar power are attracting much attention. Wind power generation in particular is expected to see global market expansion due to its advantages, such as its simple configuration, ease of scaling up, relatively low power generation costs, and safety. Wind turbines generally have a rotor with multiple blades attached to a hub, and the generator is driven by the rotational energy of the rotor as it rotates in response to the wind.

[0003] Wind turbines generate electricity using ever-changing wind as an energy source. Therefore, if the wind speed and turbulence of the wind flowing into the wind turbine are actually more severe than the design conditions, the load on the wind turbine may increase, potentially damaging its components. If damage occurs, it takes time to replace the damaged components, as well as time to arrange for replacement parts, equipment, and workers. This increases the downtime of the wind turbine and reduces the amount of power generated compared to when planned parts are replaced. To address this issue, one method involves estimating the degree of damage to the components of the wind turbine. If damage is anticipated, the system can be shut down in advance or reduced in rated output to reduce the load. In particular, in wind power generation equipment installed in mountainous areas or in wind farms where multiple wind power generation equipment are installed, wind conditions vary depending on the wind direction due to the influence of terrain, buildings, other wind turbines, etc., and wind conditions contribute significantly to damage to parts.Therefore, a method (sector management) has been devised to extend the life of parts by changing the cutout wind speed, which is the maximum wind speed at which the wind power generation equipment can operate, for each wind direction.

[0004] Patent Document 1 proposes a method of calculating a fatigue equivalent load for each wind direction, comparing the calculated fatigue equivalent load with a reference load determined from the useful life of the wind turbine, and if the difference exceeds a predetermined threshold, updating the currently adopted cutout wind speed for operational restrictions for each wind direction in accordance with that difference.

[0005] Furthermore, Patent Document 2 describes a method in which the degree of damage per unit of generated power relative to the wind speed is calculated, and fallback operation is performed when the calculated degree of damage per unit of generated power exceeds a specified value. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 5244502 [Patent Document 2] Japanese Patent Publication No. 2020-112035 Summary of the Invention [Problem to be solved by the invention]

[0007] Patent Document 1 describes a method for avoiding component failures by controlling the operation of a wind turbine generator for each wind direction so that fatigue damage does not reach a specified threshold, thereby avoiding losses in power generation that would occur if the generator were to stop operation due to a failure. However, because the wind speed at which operation is restricted is calculated from the difference between the fatigue equivalent load calculated for each wind direction and the reference load for each wind direction used in the preliminary study, it does not maximize total power generation. Furthermore, in Patent Document 2, the wind speed at which degenerated operation is performed is determined based on the degree of damage per unit of generated power relative to the wind speed. However, this does not take into account the influence of wind parameters such as turbulence intensity and wind shear, which contribute to damage particularly in mountainous areas, when these parameters differ depending on the wind direction.

[0008] Therefore, the present invention provides a control support system and a control support method for a wind turbine generator that can minimize damage to components and maximize power generation. [Means for solving the problem]

[0009] In order to solve the above problems, the control support system for wind turbine generators according to the present invention is a control support system for wind turbine generators comprising at least one wind turbine generator and a calculation processing unit, wherein the calculation processing unit comprises: a damage database creation unit that creates a database of the degree of damage that occurs to the wind turbine generator in response to wind condition parameters; a damage degree per power generation amount calculation unit that calculates the degree of damage per power generation amount based on wind condition data and operating data of the wind turbine generator; an input unit that accepts input of the period of use and upper limit value of the damage degree of the wind turbine generator; and a wind speed threshold per wind direction calculation unit that calculates the wind speed threshold for operating the wind turbine generator for each wind direction based on the damage degree database and the period of use and upper limit value of the damage degree of the wind turbine generator.

[0010] Furthermore, the control support method for a wind turbine generator according to the present invention is a control support method for a wind turbine generator comprising at least one wind turbine generator and a calculation processing unit, and is characterized by comprising: a damage database creation step in which a damage database creation unit creates a database of the degree of damage that occurs to the wind turbine generator in response to wind condition parameters; a damage degree per power generation calculation unit calculates the damage degree per power generation amount based on wind condition data and operating data of the wind turbine generator; a step in which an input unit accepts input of the usage period and upper limit value of the damage degree of the wind turbine generator; and a wind speed threshold calculation unit for each wind direction calculates a wind speed threshold for operating the wind turbine generator for each wind direction based on the damage degree database, and the usage period and upper limit value of the damage degree of the wind turbine generator. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a control support system for a wind turbine generator and a control support method for a wind turbine generator that can minimize damage to components and maximize power generation. Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram illustrating a schematic configuration of a control support system for a wind turbine generator according to a first embodiment of the present invention. [Figure 2] 2 is a flowchart showing a processing flow of the control support system for the wind turbine generator shown in FIG. [Figure 3] 2 is a functional block diagram of a damage database creation unit that constitutes the arithmetic processing unit shown in FIG. 1. FIG. [Figure 4] FIG. 10 is a diagram illustrating an example of a damage database. [Figure 5] FIG. 10 is a diagram illustrating an example of a data format of the damage level per power generation amount. [Figure 6] 2 is an explanatory example of a threshold calculation unit for the damage level per power generation amount that constitutes the calculation processing unit shown in FIG. 1. [Figure 7] 2 is an explanatory example of a threshold calculation unit for wind speed for each wind direction that constitutes the calculation processing unit shown in FIG. 1. [Figure 8] FIG. 10 is a diagram illustrating an example of the relationship between wind speed and turbulence intensity. [Figure 9] FIG. 10 is a diagram showing an example of a display of wind speed threshold values ​​for each wind direction. [Figure 10] FIG. 10 is a diagram illustrating a schematic configuration of a control support system for a wind turbine generator according to a second embodiment of the present invention. [Figure 11] 11 is a flowchart showing a processing flow of the control support system for the wind turbine generator shown in FIG. [Figure 12] FIG. 10 is a diagram showing an example of a display of the effect of sector management. [Figure 13] FIG. 10 is a diagram illustrating a schematic configuration of a control support system for a wind turbine generator according to a third embodiment of the present invention. [Figure 14] 14 is a flowchart showing a processing flow of the control support system for the wind turbine generator shown in FIG. [Figure 15] FIG. 10 is a diagram illustrating a schematic configuration of a control support system for a wind turbine generator according to a fourth embodiment of the present invention. [Figure 16]16 is a flowchart showing a processing flow of the control support system for the wind turbine generator shown in FIG. [Figure 17] 10 is an example of a display of an analysis result of the contribution of wind parameters to the damage level. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. [Example]

[0014] FIG. 1 is a diagram illustrating a schematic configuration of a control support system for a wind turbine generator according to a first embodiment of the present invention. As shown in Fig. 1, the wind turbine generator control support system 1 according to this embodiment is mainly composed of a wind turbine generator 101, a control sensor 102, a data acquisition unit 103, a calculation processing unit 104, and an input / output terminal 105. These may be connected to each other via a network such as the Internet or an intranet. Furthermore, they may be connected to each other via a wired or wireless connection as long as they are able to communicate with each other.

[0015] The control sensor 102 is attached to the wind power generation plant 101 and measures various conditions of the wind power generation plant 101, such as wind speed, wind direction, blade pitch angle, nacelle azimuth angle, rotor azimuth angle, generator rotation speed, and power generation amount, which are necessary for controlling the wind power generation plant 101.

[0016] The calculation processing unit 104 has a damage database creation unit 108, an input unit 109 for inputting the period of use and the upper limit of the damage level, a calculation unit 110 for calculating the damage level per unit of power generation, a calculation unit 111 for calculating the threshold value of the damage level per unit of power generation, a calculation unit 112 for the wind speed threshold value for each wind direction, and a display unit 113 for displaying the wind speed threshold value for each wind direction. The damage database creation unit 108, the input unit 109 for inputting the period of use and the upper limit of the damage level, the calculation unit 110 for calculating the damage level per unit of power generation, a calculation unit 111 for calculating the threshold value of the damage level per unit of power generation, a calculation unit 112 for calculating the wind speed threshold value for each wind direction, and a display unit 113 for displaying the wind speed threshold value for each wind direction are realized by, for example, a processor such as a CPU (Central Processing Unit) (not shown), a ROM for storing various programs, a RAM for temporarily storing data in the calculation process, and a storage device such as an external storage device, and the processor such as the CPU reads and executes the various programs stored in the ROM and stores the execution results in the RAM or the external storage device.

[0017] The input / output terminal 105 is composed of an input unit 106 and an output unit 107. The input unit 106 is an input device such as a keyboard, a mouse, etc., which is used by the user to input information regarding the wind power generation equipment control support system 1. The output unit 107 is an output device such as a display device, which displays the process and results of processing by the arithmetic processing unit 104, or a screen for interactive processing for the user of the wind power generation equipment control support system 1.

[0018] The damage database creation unit 108 calculates damage that occurs to evaluation parts such as the tower and blades in response to wind condition parameters (wind speed, turbulence intensity, wind shear, etc.) and stores the calculated damage as a database (damage database). Here, wind shear is the exponent of the wind speed distribution in the vertical direction of the wind turbine generator 101. The input unit 109 for inputting the usage period and upper limit of the damage level accepts input of the usage period and upper limit of the damage level desired by the user. The damage level calculation unit 110 for the amount of power generated calculates the damage level for each amount of power generated for each wind direction from the control data of the wind turbine generator 101 and the damage database.

[0019] The damage level threshold calculation unit 111 calculates a threshold value for the damage level per power generation amount, which is the upper limit value for the damage level in the usage period, from the usage period and upper limit value of the damage level input in the usage period and upper limit value of the damage level input unit 109, and the damage level per power generation amount calculated by the damage level calculation unit 110.

[0020] The wind speed threshold calculation unit for each wind direction 112 calculates the wind speed threshold for each wind direction from the damage level threshold per power generation amount calculated by the damage level threshold calculation unit for each power generation amount 111, the damage database, and the control data. The wind speed threshold display control unit 113 for each wind direction controls the input / output terminal 105 to display the wind speed threshold calculated by the wind speed threshold calculation unit 112 for each wind direction to the user of the control support system 1 for wind power generators.

[0021] In this embodiment, a case including one wind turbine generator 101 and an arithmetic processing unit 104 will be described as an example, but the present invention is not limited to this. For example, the wind farm may include a plurality of wind turbine generators 101 and one arithmetic processing unit 104, or a wind farm in which a plurality of wind turbine generators 101 and arithmetic processing units 104 are installed. This also applies to the second to fourth embodiments described below.

[0022] Next, a process flow of the wind turbine generator control support system 1 according to this embodiment will be described. Fig. 2 is a flowchart showing the process flow of the wind turbine generator control support system shown in Fig. 1.

[0023] As shown in FIG. 2, first, in step S21, the damage database creation unit 108 calculates damage to components due to wind conditions expected in the wind turbine generator 101 and stores the damage as a database (damage database). Here, a calculation method using physical analysis will be described. FIG. 3 is a functional block diagram of the damage database creation unit constituting the calculation processing unit shown in FIG. 1. As shown in FIG. 3, the damage database creation unit 108 has an external force calculation unit 301, a deformation amount calculation unit 302, and a damage level calculation unit 303. Here, the damage database creation unit 108 includes, for example, a processor such as a CPU (Central Processing Unit) not shown, a ROM for storing various programs, a RAM for temporarily storing data in the calculation process, and a storage device such as an external storage device, and the processor such as the CPU reads and executes the various programs stored in the ROM and stores the execution results in the RAM or the external storage device.

[0024] In damage calculations using physical analysis, loads are estimated from wind parameters and specifications of the wind turbine generator 101. First, the external force calculation unit 301 calculates the fluid forces and the forces due to the turbine's own weight acting on the tower and blades from wind parameters including at least wind speed, turbulence intensity, and wind shear, as well as a blade aerodynamic model, blade mass distribution, tower shape, and the like. For example, the fluid forces acting on the blades are estimated using blade element momentum theory and the like from an aerodynamic model of the blades including the cross-sectional shape of the blades. Furthermore, the fluid forces acting on the tower are calculated using, for example, a drag coefficient corresponding to the cross-sectional shape of the tower. Next, the deformation calculation unit 302 calculates the deformation of the wind turbine generator 101 from the external forces calculated by the external force calculation unit 301 based on a structural model of the wind turbine generator 101 and the like. For example, the displacement, speed, acceleration, and the like of each component of the wind turbine generator 101 are calculated from a finite element model such as the following equation (1).

[0025]

number

[0026] Furthermore, M, C, and K are the mass matrix, viscosity matrix, and stiffness matrix of the finite element model of the wind turbine generator, respectively. F is the external force calculated by the external force calculation unit 301.

[0027] Next, the damage degree calculation unit 303 calculates the stress and moment occurring in each component of the wind power generation equipment 101 from the deformation amount of the wind power generation equipment 101 estimated by the deformation amount calculation unit 302, and calculates the damage degree. In calculating the damage degree, the rainflow method is applied to time series data of stress for a certain period (for example, 10 minutes), the frequency of each range of various stress amplitudes included in the time series data is calculated, and the current damage degree of the wind power generation equipment 101 is calculated from the frequency using Miner's rule or the like according to the following formula (2).

[0028]

number

[0029] where D is fatigue damage, the subscript i is the stress amplitude range number, and n i is the frequency counted by the rainflow method, N i is the allowable number of repetitions according to the S / N diagram. The damage levels of components due to wind conditions calculated using the above method are stored as a database (damage database).

[0030] FIG. 4 is a diagram illustrating an example of a damage database. In the damage database 401 shown in FIG. 4 , for example, the damage level versus the average wind speed (m / s) and turbulence intensity (%) over a 10-minute period is stored in a table format. When the average wind speed (m / s) is 4 (m / s) and the turbulence intensity (%) is 12 (%), the damage level is 1.0e-6. When the average wind speed (m / s) is 24 (m / s) and the turbulence intensity (%) is 32 (%), the damage level is 9.1e-6. As can be seen from FIG. 4 , the damage level increases as the average wind speed (m / s) and turbulence intensity (%) increase. In other words, the damage level increases diagonally downward to the right in the table in FIG. 4 . Note that while a physical analysis method has been described here, for example, a strain sensor may be installed on the wind turbine generator 101 to be evaluated or operating in a similar environment, and the damage level for a certain period may be calculated from the measured values ​​and used as the damage database 401. Furthermore, instead of the damage level, another index such as a fatigue equivalent load may be used as the index for evaluation.

[0031] Returning to FIG. 2 , in step S22, the data acquisition unit 103 acquires data related to the state of the wind turbine generator 101 and wind conditions measured by the control sensor 102. In step S23, the damage level calculation unit 110 calculates the damage level per power generation amount by referencing the damage level for the corresponding wind conditions in the damage database 401 for the measurement data acquired in step S22 and dividing the damage level by the power generation amount. The damage level may be calculated by dividing the wind speed, turbulence intensity, and wind shear values ​​into bins and using the corresponding damage level. Alternatively, a regression model generated by polynomials, response surface methodology, or machine learning may be used. Furthermore, the power generation amount may be calculated using actual measurement data or a power curve, which is a specification of the power generation amount relative to the wind speed. As an example, FIG. 5 shows an example format of the calculated damage level per power generation amount. FIG. 5 is a diagram showing an example of a data format for the damage level per power generation amount. In the example shown in Figure 5, the "date and time," "average wind speed (m / s)," "average wind direction (deg)," "turbulence intensity (%)," "average power generation (kW)," "blade damage level (-)," and "blade damage level per power generation ( / kW)" are stored in chronological order in a table format. Here again, it can be seen that the "blade damage level per power generation ( / kW)" increases when the "average wind speed (m / s)" and "turbulence intensity (%)" are high. Specifically, when the "average wind speed (m / s)" is 20.4 (m / s) and the "turbulence intensity (%)" is 17.9 (%), the "blade damage level per power generation ( / kW)" is 1.51e-9 ( / kW).

[0032] Next, in step S24 (FIG. 2), the input unit 109 for the usage period and damage level upper limit accepts user inputs of the usage period (e.g., 20 years) and the upper limit of the damage level (e.g., 0.8). In step S25, the damage level threshold calculation unit 111 calculates the threshold of the damage level per power generation amount at which the upper limit of the damage level (e.g., 0.8) is reached within the input usage period (e.g., 20 years). FIG. 6 shows these relationships. FIG. 6 is an explanatory example of the damage level threshold calculation unit per power generation amount constituting the calculation processing unit shown in FIG. 1. Here, the cumulative damage level for the specified usage period is calculated by weighting the damage level with frequency data of wind speed, wind direction, and turbulence intensity for a certain period (e.g., one year), and a value obtained by integrating the cases where the damage level is below the threshold of the damage level per power generation amount is calculated. That is, in the relationship 601 between the threshold of the damage level per amount of power generation and the cumulative damage, when the threshold of the damage level per amount of power generation increases, the cumulative damage level for the specified period of use also increases, and a threshold of the damage level per amount of power generation (603 in FIG. 6) is calculated where this cumulative damage level matches the specified upper limit of the damage level 602. This calculation may be performed using an optimization method such as a gradient method, or by changing the threshold of the damage level per amount of power generation to calculate the cumulative damage level and then performing interpolation using polynomial approximation or the like.

[0033] Next, in step S26, the wind speed threshold calculation unit 112 for each wind direction converts the damage level threshold per power generation calculated in step S25 into a wind speed threshold per wind direction. This is because, as mentioned above, wind conditions vary depending on the wind direction due to the influence of topography and surrounding buildings, and therefore, even if the damage level threshold per power generation is the same, the corresponding wind speed varies depending on the wind direction. FIG. 7 illustrates an explanatory diagram of the conversion. FIG. 7 illustrates an example of the wind speed threshold calculation unit for each wind direction, which constitutes the calculation processing unit shown in FIG. 1. In relation 701 between the wind speed threshold and the damage level per power generation, a wind speed threshold 703 corresponding to the damage level threshold per power generation calculated in step S25 is calculated. Here, while the power generation is determined only from the wind speed from the power curve, the damage level is determined from the damage database 401 based on the wind speed and turbulence intensity, so it is necessary to determine the turbulence intensity value for the wind speed for each wind direction. FIG. 8 illustrates an example of the relationship between wind speed and turbulence intensity. Here, as shown in Fig. 8, data on turbulence intensity relative to wind speed for each wind direction (measured wind speed and turbulence intensity values ​​801 plotted in multiple places in Fig. 8) is used, and a representative value 802 of turbulence intensity for each wind speed bin (such as the average, median, or 90th percentile value) is used. This makes it possible to uniquely calculate the relationship 701 between the wind speed threshold and the damage level per power generation amount shown by the curve in Fig. 7 for each wind direction, and to calculate the wind speed threshold 703 corresponding to the damage level threshold 603 per power generation amount. Note that a graph similar to that shown in Fig. 8 is stored for each wind direction in a storage unit (not shown).

[0034] Next, in step S27, the wind speed threshold display control unit 113 for each wind direction controls the display of the wind speed threshold for each wind direction on the screen of the output unit 107 constituting the input / output terminal 105. FIG. 9 illustrates an example of a display of the wind speed threshold for each wind direction. As shown in the left diagram of FIG. 9, the wind speed threshold for each wind direction 901 is displayed in a radar chart. Note that this display method is merely an example, and numerical values ​​may also be displayed in a bar graph or list format. As shown in the right diagram of FIG. 9, the damage occurrence frequency for each wind direction is displayed in the form of a wind rose (wind rose) 902. The radial axis of the damage frequency for each wind direction 902 is an axis obtained by normalizing the occurrence frequency and converting it into a probability density, and the shading (grayscale gradation) indicates the damage level. By displaying the wind speed threshold for each wind direction and the damage occurrence frequency in this manner, it is possible to support the user of the wind turbine power generation equipment control support system 1 in determining the wind speed at which operation control for each wind direction is performed using sector management. Note that instead of displaying in shades of gray (grayscale gradation), a configuration may be used in which different colors are displayed according to the degree of damage. Also, although the wind speed threshold is displayed here, the wind speed threshold calculated here may be used directly for control as the cutoff wind speed. In other words, step S27 is not essential, and the wind speed threshold 703 calculated in step S26 may be used directly for control as the cutoff wind speed without being particularly displayed on the screen.

[0035] As described above, according to this embodiment, it is possible to provide a control support system for a wind turbine generator and a control support method for a wind turbine generator that can minimize damage to components and maximize the amount of power generation.

[0036] Furthermore, by configuring the system to accept input of the usage period by the user, for example, if maintenance of the wind turbine generator is scheduled, the user can input the period until the maintenance as the usage period. In other words, it is possible to provide a control support system and a control support method for a wind turbine generator that can maximize power generation while preventing damage to components until the maintenance. In addition, for the purpose of planning to extend the life of the wind turbine generator, the user can input "25 years" or "30 years" as the usage period. [Example]

[0037] Fig. 10 is a diagram illustrating a schematic configuration of a control support system for wind turbine generators according to a second embodiment of the present invention. As shown in Fig. 10, a calculation processing unit 104a constituting a control support system 1a for wind turbine generators according to this embodiment differs from that of the first embodiment in that it further includes a data update unit 1002. In the following, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant explanations will be omitted.

[0038] 10, the calculation processing unit 104a constituting the wind turbine generator control support system 1a has a data update unit 1002. In the wind turbine generator control support system 1a according to this embodiment, the wind speed threshold for each wind direction is updated using operating data obtained after the introduction of sector management. Here, the data update unit 1002 is realized by, for example, a processor such as a CPU (not shown), a ROM for storing various programs, a RAM for temporarily storing data in the calculation process, and a storage device such as an external storage device, and the processor such as the CPU reads and executes the various programs stored in the ROM and stores the calculation results, which are the execution results, in the RAM or the external storage device. Fig. 11 is a flowchart showing the processing flow of the wind power generation device control support system shown in Fig. 10. The wind speed threshold for each wind direction is displayed on the screen in step S27 described in the first embodiment above, and then in step S101, the wind speed threshold for each wind direction display control unit 113 controls the display of the effect of introducing sector management on the screen of the output unit 107 constituting the input / output terminal 105.

[0039] FIG. 12 is a diagram showing an example of the effect display of sector management. As shown in FIG. 12, the power generation and damage for a certain period (e.g., one year) are displayed for the actual results before the introduction of sector management, the forecast at the time of introduction, and the actual results after the introduction. Here, the forecast at the time of introduction is calculated using the wind speed threshold for each wind direction, wind condition data, and the damage database 401, as described in the first embodiment above. Next, in step S102, the data update unit 1002 recalculates the wind speed threshold for each wind direction based on the difference between the forecast at the time of introduction and the actual results after the introduction, and the process returns to step S23. Specifically, the data update unit 1002 updates the actual data such as wind conditions and power generation, and updates the wind speed threshold for each wind direction by repeating the calculation of the damage level per power generation level in step S23 (FIG. 11) and subsequent steps. Note that there may be some differences in the power generation and damage level between the forecast at the time of introduction of sector management and the actual results after the introduction of sector management, as shown in FIG. 12. This is because, at the prediction stage when sector management is introduced, the topography, or in the case of a wind farm, the location of each wind power generation device and wind condition parameters, etc. are assumed, but in reality, the wind condition parameters, etc. change after sector management is introduced. Furthermore, a strain sensor may be installed in the wind turbine generator 101, damage may be calculated from the measured values, and the damage database may be updated.

[0040] As described above, according to this embodiment, in addition to the effects of the first embodiment, the wind power generation equipment can be operated more efficiently by updating the wind speed threshold for each wind direction using the operating data after the introduction of sector management. [Example]

[0041] Third Embodiment Fig. 13 is a diagram illustrating a schematic configuration of a control support system for wind turbine generators according to a third embodiment of the present invention. As shown in Fig. 13, a calculation processing unit 104b constituting a control support system 1b for wind turbine generators according to this embodiment differs from that of the first embodiment in that it further includes a wind condition simulation execution unit 1201. In the following, the same components as those in the first embodiment are denoted by the same reference numerals, and redundant explanations will be omitted.

[0042] 13, the calculation processing unit 104b constituting the wind turbine generator control support system 1b according to this embodiment does not measure wind condition data, but instead creates wind condition data through a prior wind condition simulation by the wind condition simulation execution unit 1201. Here, the wind condition simulation execution unit 1201 is realized by, for example, a processor such as a CPU (not shown), a ROM for storing various programs, a RAM for temporarily storing data in the calculation process, and a storage device such as an external storage device, and the processor such as the CPU reads and executes the various programs stored in the ROM, and stores the calculation results that are the execution results in the RAM or the external storage device.

[0043] Fig. 14 is a flowchart showing the processing flow of the wind turbine power generation device control support system shown in Fig. 13. As shown in Fig. 14, in step S121, wind condition simulation execution unit 1201 creates wind condition data instead of data acquisition unit 103 (Fig. 1). The wind condition simulation calculates wind condition parameters such as turbulence intensity and wind shear for each wind direction and wind speed using, for example, CFD (Computational Fluid Dynamics) that models the topography and buildings around the wind turbine power generation device. In addition, the frequency of wind speeds and wind directions is obtained from meteorological data, etc. In this embodiment, since there is no actual operation data on power generation amount, the damage level per power generation amount is calculated using the value of the power curve instead.

[0044] As described above, according to this embodiment, in addition to the effects of the first embodiment, by using wind condition simulation, it becomes possible to consider how to introduce sector management before the wind turbine generator is put into operation. [Example]

[0045] Fig. 15 is a diagram illustrating a schematic configuration of a control support system for wind turbine generators according to a fourth embodiment of the present invention. As shown in Fig. 15, a calculation processing unit 104c constituting a control support system 1c for wind turbine generators according to this embodiment differs from that of the first embodiment in that it further includes a contribution analysis unit 1301 of wind condition parameters to the damage level. In the following, the same components as those in the first embodiment are denoted by the same reference numerals, and duplicated explanations will be omitted.

[0046] 15, the calculation processing unit 104c constituting the wind turbine generator control support system 1c has a wind condition parameter damage contribution analysis unit 1301. The wind condition parameter damage contribution analysis unit 1301 calculates the contribution of wind condition parameters (wind speed, turbulence intensity, wind shear, etc.) to damage using the damage database 401. Here, the wind condition parameter damage contribution analysis unit 1301 is realized by, for example, a processor such as a CPU (not shown), a ROM for storing various programs, a RAM for temporarily storing data in the calculation process, and a storage device such as an external storage device, and the processor such as the CPU reads and executes the various programs stored in the ROM and stores the execution results, which are the calculation results, in the RAM or the external storage device.

[0047] FIG. 16 is a flowchart showing the processing flow of the wind turbine power generation device control support system shown in FIG. 15. As shown in FIG. 16, in step S131, the wind condition parameter damage level contribution analysis unit 1301 calculates the contribution of wind condition parameters (wind speed, turbulence intensity, wind shear, etc.) to the damage level using the damage database 401. FIG. 17 shows an example of a display of the analysis results of the contribution of wind condition parameters to the damage level. In the analysis by the wind condition parameter damage level contribution analysis unit 1301, the contribution of each wind condition parameter to the damage level is calculated using a machine learning regression model such as multiple regression analysis or random forest. Here, parameters with high contribution levels are used to determine thresholds for controlling the operation of the wind turbine power generation device 101 for each wind direction, thereby enabling more efficient control. In the example of FIG. 17, thresholds for wind speed and turbulence intensity are determined for each wind direction, and operation restrictions are imposed. The method of determining the thresholds in this case is similar to step S26 (Fig. 2) in the first embodiment described above: the thresholds of the two parameters are changed to calculate combinations that match the threshold for the damage level per power generation amount, and these combinations are presented to the user of the wind turbine power generation equipment control support system 1c, who then selects from among them. In the example shown in Fig. 17, the display 1401 of the analysis result of the contribution of wind condition parameters to the damage level shows, in a pie chart, a case where the contribution of "wind speed" to the damage level is 40%, the contribution of "turbulence intensity" to the damage level is 30%, the contribution of "wind shear" to the damage level is 10%, and the contribution of "others (residuals)" to the damage level is 20%.

[0048] As described above, according to this embodiment, in addition to the effects of the first embodiment, it is possible to operate the wind power generation equipment more efficiently by performing sector management using, among multiple wind condition parameters, those that have a large contribution to the damage level.

[0049] The present invention is not limited to the above-described embodiments, but includes various modifications. For example, the above-described embodiments have been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the described configurations. Furthermore, it is possible to replace part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. [Explanation of symbols]

[0050] 1, 1a, 1b, 1c...Control support system for wind power generation equipment 101...Wind power generation equipment 102...Control sensor 103...Data acquisition section 104, 104a, 104b, 104c...arithmetic processing unit 105...input / output terminal 106...Input section 107...Output section 108...Damage Database Creation Department 109...Input section for the upper limit of the period of use and the degree of damage 110: Calculation section for damage level per power generation amount 111...Threshold calculation unit for damage level per power generation amount 112...Wind speed threshold calculation unit for each wind direction 113...Wind speed threshold display control unit for each wind direction 301...External force calculation section 302...Deformation calculation unit 303…Damage degree calculation section 401...Damage Database 501...Data format of damage level per power generation amount 601...Relationship between damage threshold and cumulative damage per unit of power generation 602...Specified damage limit 603: Threshold of damage level per desired power generation amount 701…Relationship between wind speed threshold and damage level per power generation amount 703...Desired wind speed threshold 801...Measured wind speed and turbulence intensity 802...Representative values ​​of wind speed and turbulence intensity 901...Wind speed threshold for each wind direction 902…Damage frequency by wind direction 1002...Data update section 1101... Power generation amount display by sector management 1102...Damage level display by sector management 1201...Wind Condition Simulation Department 1301...Analysis of the contribution of wind parameters to damage level 1401...Display of analysis results of wind parameters' contribution to damage level

Claims

1. A control support system for a wind power generation device comprising at least one wind power generation device and a calculation processing unit, The arithmetic processing unit a damage database creation unit that creates a database of the degree of damage that occurs to the wind turbine generator in response to wind condition parameters; a damage level calculation unit for calculating a damage level per power generation amount based on wind condition data and operation data of the wind turbine generator; an input unit that receives input of a usage period and an upper limit value of a damage level of the wind turbine generator; a wind speed threshold calculation unit for each wind direction that calculates a wind speed threshold for operating the wind power generation equipment for each wind direction based on the damage level database and the period of use and upper limit value of the damage level of the wind power generation equipment.

2. The control support system for a wind turbine generator according to claim 1, The control support system for a wind power generator, wherein the calculation processing unit has a wind speed threshold display control unit that controls the wind speed threshold to be displayed on an input / output terminal.

3. The control support system for a wind turbine generator according to claim 1, A control support system for a wind power generation plant, characterized in that the wind power generation plant is controlled using the wind speed threshold value for each wind direction.

4. 3. The wind turbine generator control support system according to claim 2, The damage database creation unit creates the database of the damage level through physical analysis.

5. 3. The wind turbine generator control support system according to claim 2, The damage database creation unit creates the database of the damage level based on measurement data.

6. 3. The wind turbine generator control support system according to claim 2, the arithmetic processing unit includes a data updating unit, The control support system for a wind power generation plant, wherein the data update unit updates the wind speed threshold for each wind direction using operational performance data after sector management is introduced.

7. 3. The wind turbine generator control support system according to claim 2, The calculation processing unit includes a wind condition simulation execution unit, The wind condition simulation execution unit creates wind condition data by performing a wind condition simulation.

8. 3. The wind turbine generator control support system according to claim 2, the calculation processing unit includes a wind condition parameter contribution analysis unit for the damage level, The control support system for wind power generation equipment is characterized in that the wind condition parameter contribution to damage level analysis unit analyzes the contribution of the wind condition parameters to the damage level and performs sector management using thresholds for parameters with high contribution levels.

9. A control support method for a wind turbine generator including at least one wind turbine generator and a processing unit, a damage database creation step in which a damage database creation unit creates a database of the degree of damage caused to the wind turbine generator with respect to wind condition parameters; a step in which a damage level calculation unit for calculating a damage level per power generation amount calculates a damage level per power generation amount based on wind condition data and operation data of the wind turbine generator; an input unit receiving an input of a usage period and an upper limit value of a damage level of the wind turbine generator; a step in which a wind speed threshold calculation unit for each wind direction calculates a wind speed threshold for operating the wind power generation equipment for each wind direction based on the damage level database, the period of use of the wind power generation equipment, and the upper limit value of the damage level.

10. The control support method for a wind turbine generator according to claim 9, A control support method for a wind turbine generator, further comprising a step of controlling a wind speed threshold display control unit to display the wind speed threshold on an input / output terminal.

11. The control support method for a wind turbine generator according to claim 10, The damage database creation step creates the database of damage levels through physical analysis.

12. The control support method for a wind turbine generator according to claim 10, The damage database creation step creates the database of damage levels based on measurement data, in accordance with a control support method for a wind turbine generator.

13. The control support method for a wind turbine generator according to claim 10, A control support method for a wind power generation plant, comprising a step in which a data updating unit updates the wind speed threshold for each wind direction using operational performance data after sector management is introduced.

14. The control support method for a wind turbine generator according to claim 10, A control support method for a wind turbine generator, wherein a wind condition simulation execution unit creates the wind condition data by a wind condition simulation.

15. The control support method for a wind turbine generator according to claim 10, A control support method for a wind power generation plant, characterized in that a unit for analyzing the contribution of wind condition parameters to the damage level analyzes the contribution of the wind condition parameters to the damage level and performs sector management using thresholds for parameters with high contribution levels.

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