Systems and methods for adjusting the multi-dimensional operating space of a wind turbine
Coordinating the multi-dimensional operation space adjustment of the wind turbine through the central multi-dimensional operation space controller, the problem of difficulty in dealing with multi-dimensional changes in the prior art is solved, and the energy capture efficiency and operation efficiency are improved.
Patent Information
- Application Number
- CN202010979329.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2019-09-17
- Filing Date
- 2020-09-17
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2040-09-17
AI Technical Summary
Existing wind turbine control strategies are difficult to effectively handle multi-dimensional changes in the operating space, resulting in energy loss and inefficient operation.
The central multi-dimensional operating space controller is adopted to dynamically determine the output signal to adjust the multi-dimensional operating space of the wind turbine by receiving signals from multiple modified operating space requesters, thereby realizing coordinated management of the operating space.
Improves the energy capture efficiency of wind turbines under variable conditions, reduces energy losses, simplifies software design and maintenance, and provides clearer operating space transformation behavior.
Smart Images

Figure CN112523947B_ABST
Abstract
Description
Technical Field
[0001] The present disclosure generally relates to wind turbines and, more particularly, to systems and methods for adjusting a multi-dimensional operating space of a wind turbine. Background Art
[0002] Wind power is regarded as one of the cleanest and most environmentally friendly energy sources currently available, and, in this regard, wind turbines have received more attention. Modern wind turbines typically include a tower, a generator, a gearbox, a nacelle, and one or more rotor blades. The rotor blades are the main components for converting wind energy into electrical energy. The blades typically have a cross-sectional profile of an airfoil such that during operation, air flows over the blades, thereby creating a pressure difference between the sides of the blades. As a result, a lift force acting from the pressure side towards the suction side acts on the blades. The lift force generates torque on the main rotor shaft, which is connected to the generator to generate electricity.
[0003] The operating space of a wind turbine can be regarded as the nominal values, schedules, and / or limits of setpoints within a control system considered in a broad sense. Thus, the operating space dimensions can include, but are not limited to, the nominal target tip speed ratio, the minimum grid connection speed of the rotor, the maximum rotor speed, the maximum power output, the minimum power output, the speed and power setpoints, the maximum rotor thrust, the thrust setpoint, the minimum or maximum blade pitch angle, the blade pitch angle offset and / or its limits, the storm speed that causes shutdown or reduced operation, the reactive power target and limits, and so on.
[0004] In the early wind power industry, many wind turbines were designed to operate at a fixed speed, fixed power level, and fixed pitch. The control was relatively simple and thus existed in the circuitry even before the development of digital controllers. In such instances, the wind turbine could be started, operated within its fixed operating space, and shut down in the event of any event that was incompatible with the default space. Over the decades of the wind power industry along with other developments, there has been an increasing requirement for wind turbines to be able to make more incremental adjustments to the operating power, operating noise level, and other aspects to adapt to different operating scenarios without drastic measures such as shutdown (thereby losing all energy production).
[0005] Similarly, the wind power industry has recognized that in some highly desirable operating scenarios, some adjustments to the operating space can be in the "upward" direction to increase speed or power, for example, to capture more energy from the wind in particularly good conditions. The initial software architecture for handling such adjustments to the operating space was simple because the number of dimensions being adjusted was small.
[0006] The development of dedicated single-dimensional curtailment processors has become common in the industry, e.g., to reduce the maximum power level in response to curtailment requests from the power grid, or to increase the pitch angle to reduce the power or noise level. As the industry has evolved, more reasons for customizing the operating space have come into play. For example, a wind turbine may reduce power to reduce heat generated in various electrical components during hot weather, or when certain sensors are unavailable, the wind turbine may operate in a certain form of safety mode.
[0007] Over the years, these examples have continued to increase (from very few to as many as dozens), and are generally referred to herein as modified Requestors of the Operating Space (RMOS). More specifically, at full granularity, there may be dozens of component over-temperatures that qualify for RMOS in the system, e.g., to reduce the heat-generating power production in the region of interest. Some RMOS may originate substantially from an external wind farm management agency or system, while other RMOS may originate from local site wind farm level management. Still other RMOS may originate from condition monitoring systems implemented in hardware, software, or the central wind farm server and local components of a specific wind turbine. There may be several RMOS related to wind quality (e.g., high or low turbulence, high or low shear, daytime or nighttime conditions). Also, assuming that the wind turbine design can operate at a reduced level in the absence of certain sensing information, there may be multiple RMOS related to sensors that become unavailable. Thus, there are noise RMOS, grid capacity RMOS, and the like, thus easily increasing the overall number of RMOS.
[0008] Therefore, in recent years, wind turbine control strategies have evolved from simple single-input single-output configurations to more complex model-based, multi-variable, and modern control strategies. More specifically, the operating strategies are formed in a more intricate manner to maximize energy capture under many special conditions and scenarios, such as, in particular, calm or turbulent winds, particularly high or low temperatures, absence of certain sensing information, etc.
[0009] In addition, conventional curtailment is limited (such as reducing power or increasing a small pitch angle), and generally only involves a single dimension. For example, as Figure 1As shown, a parallel single-dimensional ramp method is presented. As shown, power, rotor speed, and thrust are selected for illustrative purposes, but those skilled in the art will recognize that any suitable combination of dimensions can be applied. Also, as shown, power, rotor speed, and thrust each have multiple levels that can be adjusted in different forms of reduction or increase operations. In this example, each dimension has its own independently defined ramp rate. Thus, in one example, if power changes greatly at a slow rate and rotor speed changes little at a fast rate, the rotor speed will complete its transition first, and the power will then continue to change for a period of time. In certain directions and combinations, such effects can cause the turbine to instantaneously pass through undesirable operating points.
[0010] Since the industry seeks to minimize energy costs, it has continuously sought better methods for reduction, and these methods more frequently involve changes in multiple dimensions of the operating space of a wind turbine (as examples of any combination, rotor speed and power, thrust and rotor speed, minimum pitch angle and rotor speed). These changes in multiple dimensions of the operating space can generally protect the wind turbine with a minimum amount of energy loss relative to the nominal operating space of the turbine. However, software architecture development has not kept pace with best handling the multi-dimensional changes in the operating space and may instead continue to handle multi-dimensional changes in the operating space as a large collection of unrelated one-dimensional load reductions. For example, as Figure 2 shown, a schematic flowchart of conventional multi-dimensional control of a wind turbine is shown. As shown in RMOS 1, the advanced control Deficit module only changes the thrust dimension of the operating space and thus only sends a thrust level request to the one-dimensional prioritization and single-dimensional operating space handler (SDOSH 1). Also, as shown in RMOS 2, the Temperature 1 module sends a thrust request to the thrust one-dimensional handler SDOSH 1 and a power request to the power one-dimensional handler (SDOSH 2). In addition, as shown in RMOS 3, the Temperature 2 module only sends a power request to the power one-dimensional handler SDOSH 2, like the grid reduction module (RMOS 4). The noise reduction module (RMOS 5) also sends a power request to the power one-dimensional handler SDOSH 2 and a speed request to the speed one-dimensional handler SDOSH 3. The handlers (SDOSH 1, SDOSH 2, and SDOSH 3) each prioritize the requests, track the effects, and forward the set points or limits to the operating space adjustment function in the turbine control software. However, individual dimension-oriented architectures inherently limit the cross-visibility and coordination between the dimensions of reduction or increase in the operating space.
[0011] At least for the reasons mentioned above related to increasing RMOS and improving adaptability, there is an interest in the art in improved systems for handling concurrent and / or dynamic multi-dimensional modifications of the wind turbine operating space. Additionally, in the art, it is desirable to have methods and constructs that do not treat transitions as separate ramps on separate levels, but rather as a single coordinated path through the operating space. Summary of the Invention
[0012] Aspects and advantages of the invention will be set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.
[0013] In one aspect, the present disclosure relates to a method for adjusting a multi-dimensional operating space of a wind turbine. The method includes receiving, via a central multi-dimensional operating space controller (e.g., MDOSC), a plurality of signals from a plurality of modified operating space requestors. Each of the plurality of signals from the plurality of modified operating space requestors includes a data structure having a requested setpoint with a plurality of dimensions in the operating space. The method further includes tracking, via the central multi-dimensional operating space controller, a current setpoint of the plurality of dimensions in the operating space. Moreover, the method includes dynamically determining, via the central multi-dimensional operating space controller, an output signal based on the requested setpoint, the output signal including one or more changes (e.g., steps and / or dynamic increases or decreases) of the current setpoint of the plurality of dimensions in the operating space. Additionally, the method includes controlling the wind turbine based on the output signal to provide a modified multi-dimensional operating space.
[0014] In an embodiment, dynamically determining the output signal based on the requested setpoint may include dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operating space controller.
[0015] In another embodiment, dynamically determining the output signal based on the requested setpoint may include calculating the effect of each of the plurality of signals from the plurality of modified operating space requestors on at least one of active power or reactive power.
[0016] In such an embodiment, the method may further include prioritizing, via a central multi-dimensional operating space controller, multiple signals from multiple modified operating space requesters with respect to the effect of each of the multiple signals on at least one of active power or reactive power. Thus, in certain embodiments, dynamically determining an output signal based on a requested setpoint may include selecting, via a central multi-dimensional operating space controller and based on the prioritization, one of data structures from the multiple modified operating space requesters so as to maximize at least one of active power or reactive power, and / or minimize a mechanical load of the wind turbine structure, and / or optimize or near-optimize a certain combination of both according to heuristics.
[0017] In additional embodiments, the method may include dynamically determining a coordinated multi-dimensional transition path via a central multi-dimensional operating space controller in response to one or more changes in current setpoints of multiple dimensions in the operating space.
[0018] In an embodiment, the method may include receiving, via a central multi-dimensional operating space controller, a transition rate for each of the requested setpoints of multiple dimensions in the operating space and determining a limiting requester among the multiple modified operating space requesters with respect to the transition rate. In such an embodiment, the method may include reducing the transition rates of the multiple modified operating space requesters to the limited transition rate of the limiting requester so that each of the multiple modified operating space requesters starts and ends the transition simultaneously. In another embodiment, the method may include coordinating the reduction of the transition rates of the multiple modified operating space requesters to achieve a linear transition path between operating spaces.
[0019] In a particular embodiment, each data structure of each of the multiple signals from the multiple modified operating space requesters may have a standard identical format.
[0020] In further embodiments, the modified operating space requester may originate from a monitoring system of a component of the wind turbine, a management system of a wind farm including the wind turbine, a management system located outside the wind farm, a wind condition monitoring system located at or in the wind farm of the wind turbine, and / or a power grid connected to the wind turbine or the wind farm. Additionally, the modified operating space requester may be, for example, temperature, grid curtailment, noise reduction, power curtailment, sensor status, and / or any other modified operating space requester.
[0021] In several embodiments, the multiple dimensions may include, for example, tip speed ratio, rotor speed, generator speed, active power, reactive power, pitch angle, wind speed limit, thrust, and / or any other suitable operating parameter.
[0022] In another aspect, the present disclosure relates to a system for adjusting a multi-dimensional operating space of a wind turbine. The system includes: a plurality of modified operating space requesters; a central multi-dimensional operating space controller communicatively coupled to each of the modified operating space requesters; and a controller communicatively coupled to the central multi-dimensional operating space controller. The central multi-dimensional operating space controller is configurable to perform a plurality of operations including, but not limited to: receiving a plurality of signals from the plurality of modified operating space requesters, wherein each of the plurality of signals from the plurality of modified operating space requesters includes a data structure that includes requested setpoints for a plurality of dimensions in the operating space; tracking current setpoints for the plurality of dimensions in the operating space; and dynamically determining an output signal based on the requested setpoints, the output signal including one or more changes to the current setpoints for the plurality of dimensions in the operating space. Accordingly, the controller is configured to control the wind turbine based on the output signal to provide a modified multi-dimensional operating space. It should be understood that the system may be further configured with any of the features described herein.
[0023] Technical solution 1. A method for adjusting a multi-dimensional operating space of a wind turbine, the method comprising:
[0024] Receiving, via a central multi-dimensional operating space controller, a plurality of signals from a plurality of modified operating space requesters, each of the plurality of signals from the plurality of modified operating space requesters including a data structure that includes requested setpoints for a plurality of dimensions in the operating space;
[0025] Tracking, via the central multi-dimensional operating space controller, current setpoints for the plurality of dimensions in the operating space;
[0026] Dynamically determining, via the central multi-dimensional operating space controller, an output signal based on the requested setpoints, the output signal including one or more changes to the current setpoints for the plurality of dimensions in the operating space; and
[0027] Controlling the wind turbine based on the output signal to provide a modified multi-dimensional operating space.
[0028] Technical solution 2. The method according to technical solution 1, wherein dynamically determining the output signal based on the requested setpoints further comprises dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operating space controller.
[0029] Technical solution 3. The method according to technical solution 1, wherein dynamically determining the output signal based on the requested setpoints further comprises tracking the impact of each of the plurality of signals from the plurality of modified operating space requesters on at least one of active power or reactive power.
[0030] Technical solution 4. The method according to technical solution 1 further includes prioritizing the plurality of signals from the plurality of modified operation space requesters according to the operation aggressiveness level of each of the plurality of signals via the central multi-dimensional operation space controller.
[0031] Technical solution 5. The method according to technical solution 4, wherein dynamically determining the output signal based on the requested set point further includes selecting one of the data structures from the plurality of modified operation space requesters based on the prioritization via the central multi-dimensional operation space controller.
[0032] Technical solution 6. The method according to technical solution 1 further includes dynamically determining a coordinated multi-dimensional transition path via the central multi-dimensional operation space controller in response to one or more changes between the current set point and the new set point of the plurality of dimensions in the operation space.
[0033] Technical solution 7. The method according to technical solution 1 further includes:
[0034] receiving, via the central multi-dimensional operation space controller, the transition rate of each of the requested set points of the plurality of dimensions in the operation space; and
[0035] determining the limiting dimension regarding the transition rate among the plurality of dimensions of the modified operation space.
[0036] Technical solution 8. The method according to technical solution 7 further includes coordinating a decrease in the transition rates of the plurality of modified operation space requesters to achieve a linear transition path between operation spaces.
[0037] Technical solution 9. The method according to technical solution 8, wherein coordinating a decrease in the transition rates of the plurality of modified operation space requesters to achieve the linear transition path between operation spaces further includes reducing the transition rates of the plurality of dimensions of the modified operation space to the limited transition rate of the limiting dimension, such that each of the plurality of dimensions of the modified operation space starts and ends the transition simultaneously.
[0038] Technical solution 10. The method according to technical solution 1, wherein the one or more changes to the current set point of the plurality of dimensions in the operation space further include at least one of a step increase or decrease or a dynamic increase or decrease.
[0039] Technical solution 11. The method according to technical solution 1, wherein each data structure of each of the plurality of signals from the plurality of modification operation space requesters includes exactly the same standard format.
[0040] Technical solution 12. The method according to technical solution 1, wherein the requesters of the modification operation space originate from at least one of a monitoring system of components of the wind turbine, a management system of a wind farm including the wind turbine, a management system located outside the wind farm, a wind condition monitoring system located at the wind turbine or in the wind farm, or a power grid connected to the wind turbine or the wind farm.
[0041] Technical solution 13. The method according to technical solution 12, wherein the requesters of the modification operation space include at least one of temperature, grid curtailment, noise reduction, power curtailment, or sensor status.
[0042] Technical solution 14. The method according to technical solution 1, wherein the plurality of dimensions include at least one of tip speed ratio, rotor speed, generator speed, active power, reactive power, pitch angle, wind speed limit, or thrust.
[0043] Technical solution 15. A system for adjusting a multi-dimensional operation space of a wind turbine, the system comprising:
[0044] A plurality of modification operation space requesters;
[0045] A central multi-dimensional operation space controller communicatively coupled to each of the modification operation space requesters, the central multi-dimensional operation space controller configured to perform a plurality of operations, the plurality of operations including:
[0046] Receiving a plurality of signals from the plurality of modification operation space requesters, each of the plurality of signals from the plurality of modification operation space requesters including a data structure, the data structure including requested setpoints for a plurality of dimensions in the operation space;
[0047] Tracking current setpoints of the plurality of dimensions in the operation space; and
[0048] Dynamically determining an output signal based on the requested setpoints, the output signal including one or more changes to the current setpoints of the plurality of dimensions in the operation space; and
[0049] A controller communicatively coupled to the central multi-dimensional operation space controller, the controller configured to control the wind turbine based on the output signal to provide a modified multi-dimensional operation space.
[0050] Aspect 16. The system according to Aspect 15, wherein dynamically determining the output signal based on the requested setpoint further includes dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operating space controller.
[0051] Aspect 17. The system according to Aspect 15, wherein dynamically determining the output signal based on the requested setpoint further includes tracking the impact of each of the plurality of signals from the plurality of modified operating space requesters on at least one of active power or reactive power.
[0052] Aspect 18. The system according to Aspect 17, further including prioritizing the plurality of signals from the plurality of modified operating space requesters via the central multi-dimensional operating space controller with respect to the operating aggressiveness level of each of the plurality of signals.
[0053] Aspect 19. The system according to Aspect 18, wherein dynamically determining the output signal based on the requested setpoint further includes selecting, via the central multi-dimensional operating space controller, one of the data structures from the plurality of modified operating space requesters based on the prioritization so as to maximize at least one of the active power or the reactive power.
[0054] Aspect 20. The system according to Aspect 15, further including dynamically determining a coordinated multi-dimensional transition path via the central multi-dimensional operating space controller in response to one or more changes between the current setpoint and the new setpoint of the plurality of dimensions in the operating space.
[0055] These and other features, aspects, and advantages of the present invention will be more clearly understood with reference to the following description and the appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0056] In the specification, there is set forth a detailed and enabling disclosure of the invention, including the best mode thereof, for a person of ordinary skill in the art, with reference to the accompanying drawings, in which:
[0057] Figure 1 A schematic diagram showing a parallel one-dimensional ramp method for operating a wind turbine according to a conventional configuration;
[0058] Figure 2 A schematic flow chart showing multi-dimensional control of a wind turbine according to a conventional configuration;
[0059] Figure 3 A perspective view showing an embodiment of a wind turbine according to the present disclosure;
[0060] Figure 4 Showing what can be included in Figure 3 A schematic diagram showing an embodiment of suitable components within the turbine controller of the wind turbine shown in;
[0061] Figure 5 A schematic diagram showing an embodiment of a wind farm according to the present disclosure;
[0062] Figure 6 A flowchart showing an embodiment of a method for adjusting the multi-dimensional operating space of a wind turbine according to the present disclosure;
[0063] Figure 7 A schematic diagram showing an embodiment of a system for adjusting the multi-dimensional operating space of a wind turbine according to the present disclosure; and
[0064] Figure 8 A graph showing an embodiment of the multi-dimensional operating space configuration for a wind turbine according to the present disclosure. Detailed Description
[0065] Reference will now be made in detail to embodiments of the invention, one or more examples of which are shown in the accompanying drawings. Each example is provided by way of explanation of the invention and not limitation of the invention. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, features shown or described as part of one embodiment can be used with another embodiment to yield still a further additional embodiment. Accordingly, it is intended that the present invention cover such modifications and variations as fall within the scope of the appended claims and their equivalents.
[0066] Generally, the present disclosure relates to systems and methods for more organized and coordinated real-time changes to the multi-dimensional operating space of a wind turbine. Operating space dimensions such as, but not limited to, tip speed ratio, rotor speed, active power, pitch angle, and thrust setpoint are processed multi-dimensionally. A modified operating space requester (RMOS) may be defined in various hardware and software of the system to provide a standard format multi-dimensional input to a central multi-dimensional operating space controller within the turbine control system. The turbine control system can then better calculate the relative impact of each RMOS on system critical outputs such as active power and better attribute critical issues such as lost energy to the precise RMOS root cause. Additionally, the turbine control system can be implemented to better manage transition paths (multi-dimensional ramps) that are concurrent or overlapping with a single or multiple RMOSs. This multi-dimensional operating space management method simplifies and clarifies wind turbine software design and maintenance for this set of wind turbine functionality while providing better operating space transition behavior and clarity to the machine operator.
[0067] Referring now to the drawings, Figure 3 FIG. shows a perspective view of one embodiment of a wind turbine 10 configured to implement control techniques in accordance with the present disclosure. It should be understood that Figure 3 the wind turbine 10 is provided as an exemplary field of use and is not intended to be limiting. Still further additional embodiments may also include gas turbines, jet engines, wind turbines at the farm level, and / or additional technologies. As shown, the wind turbine 10 generally includes: a tower 12 that extends from a support surface 14; a nacelle 16 that is mounted on the tower 12; and a rotor 18 that is coupled to the nacelle 16. The rotor 18 includes a rotatable hub 20 and at least one rotor blade 22 that is coupled to the hub 20 and extends outwardly from the hub 20. For example, in the illustrated embodiment, the rotor 18 includes three rotor blades 22. However, in alternative embodiments, the rotor 18 may include more or fewer than three rotor blades 22. Each rotor blade 22 may be spaced about the hub 20 to facilitate rotation of the rotor 18 such that kinetic energy from the wind can be converted into useful mechanical energy and subsequently into electrical energy. For example, the hub 20 may be rotatably coupled to a generator (not shown) positioned within the nacelle 16 to permit the generation of electrical energy.
[0068] The wind turbine 10 may also include a wind turbine controller 26 that is centralized within the nacelle 16. However, in other embodiments, the controller 26 may be located within any other component of the wind turbine 10 or at a location external to the wind turbine. Moreover, the controller 26 may be communicatively coupled to any number of components of the wind turbine 10 in order to control the operation of such components and / or effect corrective actions. Accordingly, the controller 26 may include a computer or other suitable processing unit. Thus, in several embodiments, the controller 26 may include suitable computer-readable instructions that, when executed, cause the controller 26 to be configured to perform various different functions, such as receiving, transmitting, and / or executing wind turbine control signals. Accordingly, the controller 26 may generally be configured to control various operating modes of the wind turbine 10 (e.g., start-up sequence or shutdown sequence), derate the wind turbine 10, and / or control various components of the wind turbine 10. For example, the controller 26 may be configured to control the blade pitch or pitch angle of each of the rotor blades 22 (i.e., determine the angle of the projection of the rotor blade 22 relative to the wind direction) by adjusting the angular position of at least one rotor blade 22 relative to the wind, in order to control the power output generated by the wind turbine 10. For example, the controller 26 may control the pitch angle of the rotor blades 22 by causing the rotor blades 22 to rotate individually or simultaneously about the pitch axis 28 by means of transmitting suitable control signals to a pitch drive or pitch adjustment mechanism (not shown) of the wind turbine 10.
[0069] Now referring to Figure 4, a block diagram showing an embodiment of suitable components that may be included in controller 26 in accordance with aspects of the present subject matter. As shown, controller 26 may include one or more processors 58 configured to perform a variety of computer-implemented functions (e.g., performing the methods, steps, calculations, etc. disclosed herein) and associated (one or more) memory devices 60. As used herein, the term "processor" refers not only to integrated circuits known in the art as being included in a computer, but also to controllers, microcontrollers, microcomputers, programmable logic controllers (PLCs), application specific integrated circuits, and other programmable circuits. Additionally, the (one or more) memory devices 60 may generally include (one or more) memory elements, including but not limited to computer-readable media (e.g., random access memory (RAM)), computer-readable non-volatile media (e.g., flash memory), floppy disks, compact disc-read only memory (CD-ROM), magneto-optical disk (MOD), digital versatile disk (DVD), and / or other suitable memory elements. Additionally, controller 26 may further include a communication module 62 for facilitating communication between controller 26 and various components of wind turbine 10. For example, communication module 62 may include a sensor interface 64 (e.g., one or more analog-to-digital converters) for allowing signals transmitted by one or more sensors 65, 66, 67 to be converted into signals that can be understood and processed by controller 26. It should be appreciated that sensors 65, 66, 67 may be communicatively coupled to communication module 62 using any suitable means. For example, as Figure 4 shown, sensors 65, 66, 67 are coupled to sensor interface 64 via a wired connection. However, in other embodiments, sensors 65, 66, 67 may be coupled to sensor interface 64 via a wireless connection (such as, by using any suitable wireless communication protocol known in the art). Accordingly, processor 58 may be configured to receive one or more signals from sensors 65, 66, 67.
[0070] The sensors 65, 66, 67 of the wind turbine 10 can be any suitable sensors configured to measure any operating condition or wind parameter at or near the wind turbine. For example, the sensors 65, 66, 67 can include: blade sensors for measuring the pitch angle of one of the rotor blades 22 or for measuring the load acting on one of the rotor blades 22; generator sensors for monitoring a generator (e.g., torque, rotational speed, acceleration, and / or power output); and / or various wind sensors for measuring various wind parameters. Moreover, the sensors 65, 66, 67 can be characteristic turbulence intensity sensors that directly or indirectly measure the characteristic turbulence intensity near the wind turbine 10. Additionally, the sensors 65, 66, 67 can be located near the ground of the wind turbine, on the nacelle, or on the meteorological mast of the wind turbine. It should also be understood that any other number or type of sensors can be employed, and they can be located at any position. For example, the sensors can be accelerometers, pressure sensors, angle-of-attack sensors, vibration sensors, MIMU sensors, camera systems, fiber optic systems, anemometers, wind vanes, sound detection and ranging (SODAR) sensors, infrared lasers, light detection and ranging (LIDAR) sensors, radiometers, pitot tubes, radiosondes, other optical sensors, and / or any other suitable sensors. It should be realized that, as used herein, the term "monitoring" and its variants indicate that the various sensors of the wind turbine can be configured to provide a direct measurement of the monitored parameter or an indirect measurement of such a parameter. Thus, the sensors 65, 66, 67 can be used, for example, to generate a signal related to the monitored parameter, and the signal can then be utilized by the controller 26 to determine the actual condition.
[0071] Now referring Figure 5 , the systems and methods described herein can also be combined with the wind farm controller 222 of the wind farm 200. As shown, the wind farm 200 can include a plurality of wind turbines 202, which include the wind turbine 10 described above. For example, as shown in the illustrated embodiment, the wind farm 200 includes twelve wind turbines, which include the wind turbine 10. However, in other embodiments, the wind farm 200 can include any other number of wind turbines, such as fewer than twelve wind turbines or more than twelve wind turbines. In one embodiment, the controller 26 of the wind turbine 10 can be communicatively coupled to the farm controller 222 via a wired connection, such as by connecting the controller 26 via a suitable communication link 226 (e.g., a suitable cable). Alternatively, the controller 26 can be communicatively coupled to the farm controller 222 via a wireless connection (such as by using any suitable wireless communication protocol known in the art).
[0072] In several embodiments, one or more of the wind turbines 202 in the wind farm 200 may include a plurality of sensors for monitoring various operating parameters / conditions of the wind turbines. For example, as shown, one of the wind turbines 202 includes a wind sensor 216 configured to measure wind speed, such as an anemometer or any other suitable device. As generally understood, the wind speed can vary significantly across the wind farm 200. Thus, the (one or more) wind sensors 216 may allow monitoring of the local wind speed at each wind turbine 202. Additionally, the wind turbine 202 may further include additional sensors 218. For example, the sensor 218 may be configured to monitor electrical properties of the output of the generator of each wind turbine 202, such as a current sensor, a voltage sensor, a temperature sensor, or a power monitor that directly monitors power output based on current measurements and voltage measurements. Alternatively, the sensor 218 may include any other sensor that can be utilized to monitor the power output of the wind turbine 202. It should also be understood that the wind turbines 202 in the wind farm 200 may include any other suitable sensors known in the art for measuring and / or monitoring wind conditions and / or wind turbine conditions.
[0073] Now referring Figure 6 and Figure 7 , the present disclosure relates to systems and methods for adjusting a multi-dimensional operating space of a wind turbine according to aspects of the present disclosure. More specifically, Figure 6 FIG. shows a flowchart of one embodiment of a method 100 for adjusting a multi-dimensional operating space of a wind turbine according to aspects of the present disclosure. Figure 7 FIG. shows a schematic diagram of one embodiment of a system 250 for adjusting a multi-dimensional operating space of a wind turbine according to aspects of the present disclosure.
[0074] Generally, as Figure 6 shown in, the method 100 is described herein as being implemented for operating the above-described wind turbine 10 and / or wind farm 200. However, it should be appreciated that the disclosed method 100 may be used to operate any other wind turbine and / or wind farm having any suitable configuration. Additionally, although Figure 6 the steps are depicted as being performed in a particular order for purposes of illustration and discussion, the methods described herein are not limited to any particular order or arrangement. Those skilled in the art will recognize, using the disclosure provided herein, that the various steps of the methods may be omitted, rearranged, combined, and / or modified in various ways.
[0075] As shown at (102), the method 100 includes receiving a plurality of signals 254 via a central multi-dimensional operating space controller 258 (also labeled MDOSC) from a plurality of modified operating space requesters 252 (labeled RMOS 1, RMOS 2, RMOS 3, RMOS 4, RMOS 5, etc.). More specifically, asFigure 7 As shown in, the advanced control deficiency module (comparable to the prior art systems of Figure 1 ) may still only request a real change in the thrust level, but the advanced control deficiency module explicitly sends a signal that explicitly calls out the set (or data structure 256) of levels (requested or non-requested) related to all dimensions of the operating space. Also, as shown, the remaining plurality of signals 254 from the plurality of modified operating space requesters 252 may also include a data structure 256 with a requested setpoint having multiple dimensions in the operating space. In a particular embodiment, each data structure 256 of each of the plurality of signals 254 from the plurality of modified operating space requesters 252 may also have exactly the same standard format, even if they only request real changes to a subset of the operating space dimensions. Those skilled in the art will recognize that the request structure can take many different literal forms, from arrays of literal variables to defined sets of signals, to data structures including variable types, etc. and other as-yet-unforeseen options that still fall within the scope of the present invention.
[0076] As described herein, the modified operating space requester 252 may originate from a monitoring system of a component of the wind turbine 10 (such as originating from sensors 65, 66, 67), a management system of the wind farm 200 that includes the wind turbine 10 (such as originating from the field-level controller 202), a management system located outside the wind farm 200, a wind condition monitoring system located at the wind turbine 10 or in the wind farm 200 (such as originating from sensor 216), and / or a power grid connected to the wind turbine 10 and / or the wind farm 200. Additionally, as Figure 7 shown in, the modified operating space requester 252 may include, for example, various temperature, grid curtailment, noise reduction, power reduction, sensor status, and / or any other suitable modified operating space requester. Additionally, in several embodiments, the dimensions described herein may include, for example, tip speed ratio, rotor speed, generator speed, active power, reactive power, pitch angle, wind speed limit, thrust, and / or any other suitable operating parameter.
[0077] Returning to Figure 6 , as shown in (104), method 100 includes tracking the current setpoints of multiple dimensions in the operating space via the central multi-dimensional operating space controller 258. More specifically, in certain embodiments, the central multi-dimensional operating space controller 258 may be configured to track all current dimensions of the operating space as defined by the output signal 260 of the MDOSC function. Additionally, the central multi-dimensional operating space controller 258 may be configured to track all new requested dimensions of the operating space as received from all RMOS modules 252.
[0078] Furthermore, as in Figure 6As shown in (106) in, method 100 includes dynamically determining output signal 260 via central multi-dimensional operating space controller 258 based on a requested set point from modified operating space requester 252. Accordingly, output signal 260 includes one or more changes (e.g., steps and / or dynamic increases or decreases) to current set points for multiple dimensions in the operating space.
[0079] In an embodiment, central multi-dimensional operating space controller 258 may be configured to dynamically determine output signal 260 based on the requested set point using a computer-implemented model stored therein. For example, in one embodiment, central multi-dimensional operating space controller 258 may be configured to dynamically determine output signal 260 based on the requested set point by calculating the impact of each of multiple signals 254 from multiple modified operating space requesters 252 on the active power output and / or reactive power output.
[0080] Here, it is worth noting that the calculation of the impact of each requested modification of the operating space allows determination of the "most restrictive" regarding energy capture and allows consideration of energy losses or gains into bins representing different RMOS (a certain amount of energy loss for noise reduction operations, a certain amount of gain for low turbulence intensity operations, a certain amount of loss for temperature reduction, etc.).
[0081] In such an embodiment, central multi-dimensional operating space controller 258 may also be configured to prioritize multiple signals from multiple modified operating space requesters 252 regarding the impact of each of multiple signals 254 on the active power output and / or reactive power output. Thus, in certain embodiments, central multi-dimensional operating space controller 258 may be configured to select one of data structures 256 from multiple modified operating space requesters 252 based on the prioritization so as to maximize the active power output and / or reactive power output.
[0082] For example, in an embodiment, the central multi-dimensional operating space controller 258 may be configured to receive the minimum amount of all requested power levels, the minimum amount of all requested speeds, the minimum amount of all requested thrusts, while considering the step size in each dimension and the maximum acceptable ramp rate of change in each dimension, and may then ramp multi-dimensionally and linearly. In such an embodiment, then, the central multi-dimensional operating space controller 258 may determine the dominant dimension that takes the longest time to transition. Thus, the rates of the non-dominant dimensions may be locked such that, in the case of a linear ramp, all dimensions will start and end simultaneously with the dominant dimension in the transition. In this way, a linear transition in the multi-dimensional space is constructed and the path is followed. In a specific embodiment, the central multi-dimensional operating space controller 258 may take the lowest power, the lowest speed, the lowest thrust, the lowest reactive power, the highest minimum pitch angle, etc., and may generally select the least aggressive operation in each dimension of the space. Although as described above, the prioritization may take the form of the lowest amount of all power requests, the highest amount of all minimum pitch requests (for turbine designs where the pitch is feathered), the lowest amount of all speed requests, etc., it should be understood that the prioritization may use alternative logic that is not always the least aggressive operation in each dimension.
[0083] In an example, there is a typical prioritization in some dimensions, such as, if there are two power levels requested for adjustment by the RMOS, the lower amount of the two power levels will almost always be taken. If two minimum pitch angles are requested from separate RMOSs, the higher amount of the two minimum pitch angles will almost always be taken. However, in some instances, there are cases where the on-board logic may prioritize differently based on mechanical loads, power, etc. than the direction it almost always follows.
[0084] In an additional embodiment, the central multi-dimensional operating space controller 258 may be further configured to dynamically determine a coordinated multi-dimensional transition path in response to one or more changes in the current setpoints of multiple dimensions in the operating space.
[0085] In an embodiment, the central multi-dimensional operating space controller 258 may be configured to receive or otherwise know the transition rate (which may be a default or maximum transition rate) of each of the requested setpoints for multiple dimensions in the operating space, and determine the limit requesters for the multiple modified operating space requesters 252 with respect to the transition rate. In such an embodiment, as mentioned above, the central multi-dimensional operating space controller 258 may be configured to evaluate the step size and the maximum slew rate for each dimension to determine the limit transition rate / time value, and reduce the transition rate of the multiple modified operating space requesters 252 to the limited transition rate of the limit requesters, such that each of the multiple modified operating space requesters 252 starts and ends the transition simultaneously. In another embodiment, the central multi-dimensional operating space controller 258 may be configured to coordinate the reduction of the transition rates of the multiple modified operating space requesters 252 to achieve a linear transition path between the operating spaces. For example, Figure 8 A graph showing an embodiment of the multi-dimensional operating space configuration of the wind turbine 10 according to the present disclosure is shown, which particularly shows a transition path divided into multiple linear paths. More specifically, Figure 8 To help illustrate the advantages of the present disclosure, an advantage of the present disclosure is the ability of the software within the central multi-dimensional operating space controller 258 to use a transition path defined by slew rates coordinated across dimensions to handle transitions within the operating space as inherently multi-dimensional transitions. More specifically, as shown, the graph shown includes dimensions of power, thrust, and speed, and the dimensions of power, thrust, and speed are provided for illustrative purposes only. Also, as shown, points 1-2, points 2-3, points 3-4, and points 4-5 are all examples of linear transitions in the operating space. However, it should be understood that the coordinated transitions need not be linear in other embodiments, and the coordinated transitions may be non-linear.
[0086] In addition, in certain embodiments, it should be understood that the central multi-dimensional operating space controller 258 may also include one or more functions for smoothing transitions into and out of multi-dimensional slew into such a centralized function, and logic for avoiding certain regions of the operating space along certain transition paths may also be added. Such functions are intended to act as rate-slowing functions when the slew action leaves the initial point in the operating space or reaches a new point in the operating space, such that not only are the setpoints in each dimension still continuous functions, but also the first derivative or even higher-order derivatives of the setpoints in each dimension of the operating space can remain continuous to smooth the transition.
[0087] In one embodiment, the determination of the reduced power capacity caused by the modification sets of each modification operation space requester 252 can be achieved, for example, by considering the nominal reference case of all operation space dimensions as the baseline power generation capacity. Then, the system 250 can use the available wind speed and model-based aerodynamic characteristics (maps or the like) to determine what maximum power can be achieved at the maximum speed, maximum power, and maximum thrust (and all other operation space dimension constraints) specified in the nominal case. Similarly, the system 250 can use the available wind speed and model-based aerodynamic characteristics (maps or the like) to determine what maximum power can be achieved at the maximum speed, maximum power, and maximum thrust (and all other operation space dimension constraints) specified in the case of each modification operation space requester 252. Then, the system can determine the energy loss or gain during each time period (controller cycle, second, minute, hour, etc.) under the changes imposed by each modification operation space requester 252 relative to the nominal case, and can record or store the actual energy captured compared to the nominal case.
[0088] Then, the system 250 is configured to define an arbitrary value of the total lost power, which can represent multiples of the same power / energy loss from multiple modification operation space requesters 252. Thus, then, the system 250 can assign a responsibility fraction to each modification operation space requester 252 according to the total lost power fraction of each modification operation space requester 252. Consequently, the system 250 can define the true power / energy loss or gain relative to the nominal case by comparing the actual energy / power capture with the energy / power capture of the nominal case (which is referred to as "nominal power" or "possible power"). In addition, the system 250 can increment the energy loss count according to the true power / energy loss or gain and the responsibility fraction assigned to each modification operation space requester 252. It should be further understood that the system 250 can also be configured to increment the energy loss count according to the maximum limit of all modification operation space requesters 252 from a power perspective or by other designed allocation methods, rather than incrementing the energy loss count proportionally.
[0089] Therefore, the central multi-dimensional operation space controller 258 of the present disclosure is capable of performing Figure 1Complete operations that cannot be practically achieved by the individual parallel single-dimensional processors (SDOSH 1, 2, 3). As mentioned, one such operation may include using an on-board model to calculate the impact of all operating space dimensions on energy capture. Such a model may include one or more aerodynamic performance maps (e.g., look-up tables) of rotor performance, which may inform the optimal path for multi-dimensional operating space transitions, models of electrical losses, etc. For obvious reasons, the users of wind turbines and the standards organizations that govern wind turbines are interested in tracking which of the modification operating space requesters 252 limits the total energy capture (power generation) at any given point in time. Among other reasons, this also allows users to rank the causes of energy losses and prioritize these causes for attention and allocation of maintenance and / or engineering service resources.
[0090] For example, when all curtailments occur explicitly through the maximum power level, the central multi-dimensional operating space controller 258 can control the multi-dimensional operating space via simple calculations. However, when multiple operating space dimensions are de-loaded simultaneously, the calculation becomes much more complex. For example, if the speed decreases and the minimum (micro) pitch angle increases, the central multi-dimensional operating space controller 258 can determine which of the dimensions is more restrictive on power. With the central multi-dimensional operating space controller 258, it is possible to use the on-board model to estimate the energy impact of the de-load for each request in the modification operating space requester 252 and determine which is restrictive on the total energy. It is also possible to proportionally allocate the share of energy losses among the various modification operating space requesters 252 during concurrent requests.
[0091] Return reference Figure 6 , once the central multi-dimensional operating space controller 258 determines the output signal 260, as shown in (108), method 100 includes controlling the wind turbine 10 based on the output signal 260 to provide a modified multi-dimensional operating space. Thus, the central multi-dimensional operating space controller 258 implements central management of the instantaneous path from one operating space to the modified operating space, thereby better managing the instants in operation. Compared to alternative methods, in the case where each modification operating space requester 252 expects a uniform input format, adding a new modification operating space requester or adding a dimensional request from an existing modification operating space requester 252 becomes a simpler change to the system. The central multi-dimensional operating space controller 258 can also be designed in a generalized manner for the general input of the modification operating space requester 252 and the general multi-dimensional output of the operating space adjustment function (e.g., output signal 260) that can be used by the turbine control software (e.g., as shown via the controller 26).
[0092] Aspects and embodiments of the present invention are defined by the numbered clauses below:
[0093] Clause 1. A method for adjusting a multi-dimensional operating space of a wind turbine, the method comprising:
[0094] Receiving, via a central multi-dimensional operating space controller, a plurality of signals from a plurality of modified operating space requesters, each of the plurality of signals from the plurality of modified operating space requesters including a data structure that includes requested set points for a plurality of dimensions in the operating space;
[0095] Tracking, via the central multi-dimensional operating space controller, current set points for a plurality of dimensions in the operating space;
[0096] Dynamically determining, via the central multi-dimensional operating space controller, an output signal based on the requested set points, the output signal including one or more changes to the current set points for a plurality of dimensions in the operating space; and
[0097] Controlling the wind turbine based on the output signal to provide a modified multi-dimensional operating space.
[0098] Clause 2. The method according to Clause 1, wherein dynamically determining the output signal based on the requested set points further comprises dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operating space controller.
[0099] Clause 3. The method according to any of the preceding clauses, wherein dynamically determining the output signal based on the requested set points further comprises tracking the impact of each of the plurality of signals from the plurality of modified operating space requesters on at least one of active power or reactive power.
[0100] Clause 4. The method according to any of the preceding clauses, further comprising prioritizing the plurality of signals from the plurality of modified operating space requesters via the central multi-dimensional operating space controller with respect to the operating aggressiveness level of each of the plurality of signals.
[0101] Clause 5. The method according to any of the preceding clauses, wherein dynamically determining the output signal based on the requested set points further comprises selecting, via the central multi-dimensional operating space controller, one of the data structures from the plurality of modified operating space requesters based on the prioritization.
[0102] Clause 6. The method according to any of the preceding clauses, further comprising dynamically determining a coordinated multi-dimensional transition path via the central multi-dimensional operating space controller in response to one or more changes between the current set points and new set points for a plurality of dimensions in the operating space.
[0103] Clause 7. The method according to any of the preceding clauses, further comprising:
[0104] Receiving, via a central multi-dimensional operation space controller, a transition rate for each of a plurality of requested set points in a plurality of dimensions in an operation space; and
[0105] Determining a limiting dimension regarding the transition rate among a plurality of dimensions of the modified operation space.
[0106] Clause 8. The method according to any one of the preceding clauses, further comprising coordinating a reduction in the transition rates of a plurality of modified operation space requesters to achieve a linear transition path between operation spaces.
[0107] Clause 9. The method according to any one of the preceding clauses, wherein coordinating a reduction in the transition rates of a plurality of modified operation space requesters to achieve a linear transition path between operation spaces further comprises reducing the transition rates of a plurality of dimensions of the modified operation space to a restricted transition rate of the limiting dimension, such that each of a plurality of dimensions of the modified operation space starts and ends the transition simultaneously.
[0108] Clause 10. The method according to any one of the preceding clauses, wherein one or more changes to the current set points of a plurality of dimensions in the operation space further comprise at least one of stepping up or down or dynamically increasing or decreasing.
[0109] Clause 11. The method according to any one of the preceding clauses, wherein each data structure of each of a plurality of signals from a plurality of modified operation space requesters comprises exactly the same standard format.
[0110] Clause 12. The method according to any one of the preceding clauses, wherein the requesters for modifying the operation space originate from at least one of a monitoring system of components of a wind turbine, a management system of a wind farm including the wind turbine, a management system located outside the wind farm, a wind condition monitoring system located at the wind turbine or in the wind farm, or a power grid connected to the wind turbine or the wind farm.
[0111] Clause 13. The method according to any one of the preceding clauses, wherein the requesters for modifying the operation space comprise at least one of temperature, grid curtailment, noise reduction, power curtailment, or sensor status.
[0112] Clause 14. The method according to any one of the preceding clauses, wherein the plurality of dimensions comprise at least one of tip speed ratio, rotor speed, generator speed, active power, reactive power, pitch angle, wind speed limit, or thrust.
[0113] Clause 15. A system for adjusting a multi-dimensional operation space of a wind turbine, the system comprising:
[0114] A plurality of modified operation space requesters;
[0115] A central multi-dimensional operation space controller communicatively coupled to each of the modified operation space requesters, the central multi-dimensional operation space controller configured to perform a plurality of operations including:
[0116] Receiving a plurality of signals from a plurality of modified operation space requesters, each of the plurality of signals from the plurality of modified operation space requesters including a data structure including requested setpoints for a plurality of dimensions in the operation space;
[0117] Tracking current setpoints for a plurality of dimensions in the operation space; and
[0118] Dynamically determining an output signal based on the requested setpoints, the output signal including one or more changes to the current setpoints for a plurality of dimensions in the operation space; and
[0119] A controller communicatively coupled to the central multi-dimensional operation space controller, the controller configured to control a wind turbine based on the output signal to provide a modified multi-dimensional operation space.
[0120] Clause 16. The system of clause 15, wherein dynamically determining the output signal based on the requested setpoints further includes dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operation space controller.
[0121] Clause 17. The system of clauses 15 - 16, wherein dynamically determining the output signal based on the requested setpoints further includes tracking the impact of each of the plurality of signals from the plurality of modified operation space requesters on at least one of active power or reactive power.
[0122] Clause 18. The system of clauses 15 - 17, further including prioritizing the plurality of signals from the plurality of modified operation space requesters via the central multi-dimensional operation space controller with respect to the operating aggressiveness level of each of the plurality of signals.
[0123] Clause 19. The system of clauses 15 - 18, wherein dynamically determining the output signal based on the requested setpoints further includes selecting, via the central multi-dimensional operation space controller, one of the data structures from the plurality of modified operation space requesters based on the prioritization so as to maximize at least one of active power or reactive power.
[0124] Clause 20. The system of clauses 15 - 19, further including dynamically determining a coordinated multi-dimensional transition path via the central multi-dimensional operation space controller in response to one or more changes between the current setpoints and new setpoints for a plurality of dimensions in the operation space.
[0125] This written description uses examples to disclose the invention (including the best mode), and also enables any person skilled in the art to practice the invention, including making and using any device or system and performing any incorporated method. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. If such other examples have structural elements that are not different from the literal language of the claims, or if these examples include equivalent structural elements that have insubstantial differences from the literal language of the claims, then these examples are intended to fall within the scope of the claims.
Claims
1. A method for adjusting a multi-dimensional operating space of a wind turbine, the method comprising: Receiving, via a central multi-dimensional operating space controller, a plurality of signals from a plurality of modified operating space requesters, each of the plurality of signals from the plurality of modified operating space requesters including a data structure that includes requested setpoints for a plurality of dimensions in the operating space; Tracking, via the central multi-dimensional operating space controller, current setpoints for the plurality of dimensions in the operating space; Dynamically determining, via the central multi-dimensional operating space controller, an output signal based on the requested setpoints, the output signal including one or more changes to the current setpoints for the plurality of dimensions in the operating space; And Controlling the wind turbine based on the output signal to provide a modified multi-dimensional operating space; Wherein dynamically determining the output signal based on the requested setpoints further includes tracking the effect of each of the plurality of signals from the plurality of modified operating space requesters on at least one of active power or reactive power.
2. The method according to claim 1, wherein, Dynamically determining the output signal based on the requested setpoints further includes dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operating space controller.
3. The method according to claim 1, further comprising prioritizing the plurality of signals from the plurality of modified operating space requesters via the central multi-dimensional operating space controller with respect to the operating aggressiveness level of each of the plurality of signals.
4. The method according to claim 3, wherein, Dynamically determining the output signal based on the requested setpoints further includes selecting, via the central multi-dimensional operating space controller, one of the data structures from the plurality of modified operating space requesters based on the prioritization.
5. The method according to claim 1, further comprising dynamically determining a coordinated multi-dimensional transition path via the central multi-dimensional operating space controller in response to one or more changes between current setpoints and new setpoints for the plurality of dimensions in the operating space.
6. The method according to claim 1, further comprising: Receiving, via the central multi-dimensional operating space controller, a transition rate for each of the requested setpoints for the plurality of dimensions in the operating space; And Determining a limiting dimension with respect to the transition rate among the plurality of dimensions of the modified operating space.
7. The method according to claim 6, further comprising coordinating a reduction in the transition rates of the plurality of modified operating space requesters to achieve a linear transition path between operating spaces.
8. The method according to claim 7, wherein Coordinating a reduction in the transition rates of the plurality of modified operating space requesters to achieve the linear transition path between the operating spaces further includes reducing the transition rates of the plurality of dimensions of the modified operating space to a limited transition rate of the limiting dimension such that each of the plurality of dimensions of the modified operating space starts and ends the transition simultaneously.
9. The method according to claim 1, wherein The one or more changes to the current setpoints of the plurality of dimensions in the operating space further include at least one of a stepwise increase or decrease or a dynamic increase or decrease.
10. The method according to claim 1, wherein, Each data structure of each of the plurality of signals from the plurality of modified operating space requesters includes an identical standard format.
11. The method according to claim 1, wherein, The requesters for the modified operating space originate from at least one of a monitoring system of components of the wind turbine, a management system of a wind farm containing the wind turbine, a management system located outside the wind farm, a wind condition monitoring system located at the wind turbine or in the wind farm, or a power grid connected to the wind turbine or the wind farm.
12. The method according to claim 11, wherein, The requesters for the modified operating space include at least one of temperature, grid curtailment, noise reduction, power curtailment, or sensor status.
13. The method according to claim 1, wherein, The plurality of dimensions includes at least one of tip speed ratio, rotor speed, generator speed, active power, reactive power, pitch angle, wind speed limit, or thrust.
14. A system for adjusting a multi-dimensional operating space of a wind turbine, the system comprising: A plurality of modified operating space requesters; A central multi-dimensional operating space controller communicatively coupled to each of the modified operating space requesters, the central multi-dimensional operating space controller configured to perform a plurality of operations, the plurality of operations including: Receiving a plurality of signals from the plurality of modified operating space requesters, each of the plurality of signals from the plurality of modified operating space requesters including a data structure, the data structure including requested setpoints of a plurality of dimensions in the operating space; Tracking current setpoints of the plurality of dimensions in the operating space; and Dynamically determining an output signal based on the requested setpoints, the output signal including one or more changes to the current setpoints of the plurality of dimensions in the operating space; and A controller communicatively coupled to the central multi-dimensional operating space controller, the controller configured to control the wind turbine based on the output signal to provide a modified multi-dimensional operating space; Wherein dynamically determining the output signal based on the requested setpoints further includes tracking the impact of each of the plurality of signals from the plurality of modified operating space requesters on at least one of active power or reactive power.
15. The system according to claim 14, wherein Dynamically determining the output signal based on the requested setpoints further includes dynamically determining the output signal via a computer-implemented model stored in the central multi-dimensional operating space controller.
16. The system according to claim 14, further comprising prioritizing the plurality of signals from the plurality of modified operating space requesters via the central multi-dimensional operating space controller with respect to the operating aggressiveness level of each of the plurality of signals.
17. The system according to claim 16, wherein, Dynamically determining the output signal based on the requested setpoints further includes selecting, via the central multi-dimensional operating space controller, one of the data structures from the plurality of modified operating space requesters based on the prioritization so as to maximize at least one of the active power or the reactive power.
18. The system according to claim 14, further comprising dynamically determining a coordinated multi-dimensional transition path via the central multi-dimensional operating space controller in response to one or more changes between a current set point and a new set point of the plurality of dimensions in the operating space.
Citation Information
Patent Citations
Wind turbine control based on forecasts
CN107820540A