Switching method and system for fan drive simulation system

Abstract

The application provides a switching method and system of a fan transmission simulation system. The method comprises the following steps: acquiring a blade aerodynamic torque output by a fan blade simulation system in wind turbine simulation and a feedback electromagnetic damping torque output by a generator simulation system in real time; determining an initial electromagnetic damping torque input into the fan transmission simulation system at a current time according to the blade aerodynamic torque; and judging whether the fan transmission simulation system is switched from a one-way transmission system to a two-way switching transmission system at the current time according to the initial electromagnetic damping torque and the feedback electromagnetic damping torque. The technical scheme provided by the application maximizes the operation stability of the fan transmission simulation system and enables the fan transmission simulation system to reach stability at an optimal speed.

Description

Technical Field

[0001] This application relates to the field of system switching, and in particular to a switching method and system for a wind turbine drive simulation system. Background Technology

[0002] A wind power simulation system is a computer software or hardware system used to simulate the operating characteristics of wind turbine generators. It typically includes a wind turbine blade simulation system, a wind turbine drive simulation system, a generator simulation system, and an electrical grid connection and control simulation system. The main output of the wind turbine drive simulation system is the mechanical torque value transmitted to the generator.

[0003] Under existing technical solutions, the inputs to the wind turbine drive simulation system include: 1. the aerodynamic torque of the wind turbine blades output by the wind turbine blade simulation system; 2. the wind turbine speed output by the generator simulation system; and 3. the electromagnetic damping torque output by the generator simulation system. The wind turbine drive simulation system calculates the output mechanical torque using these three inputs. During the initial operation period, the simulation system needs to establish a steady state. During this steady-state establishment process, the wind turbine speed output by the generator simulation system may be negative or exceed limits, potentially causing the system to take too long to reach steady state or even fail to reach steady state and diverge, posing a risk of instability in the simulation system's operation. Summary of the Invention

[0004] This application provides a switching method and system for a wind turbine drive simulation system, which at least solves the technical problem that the overall system takes too long to reach steady state, or fails to reach steady state and diverges, posing a risk of unstable operation of the simulation system.

[0005] The first aspect of this application provides a switching method for a wind turbine drive simulation system, the method comprising:

[0006] Real-time acquisition of blade aerodynamic torque output by the wind turbine blade simulation system and feedback electromagnetic damping torque output by the generator simulation system in wind turbine simulation.

[0007] The initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment is determined based on the blade aerodynamic torque.

[0008] Based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque, it is determined whether the wind turbine drive simulation system should be switched from a unidirectional drive system to a bidirectional switching drive system at the current moment.

[0009] Preferably, the initial electromagnetic damping torque is calculated using the following formula:

[0010]

[0011] In the formula, T ec,tLet T be the initial electromagnetic damping torque at the current time t. m,t Δt represents the aerodynamic torque of the wind turbine blades output by the simulation system at the current time t, K represents the steady-state transmission ratio of the wind turbine drive simulation system, and Δt represents the step size.

[0012] Furthermore, the step of determining whether to switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque includes:

[0013] Determine the difference between the initial electromagnetic damping torque at time t-1 and the feedback electromagnetic damping torque at time t-1.

[0014] Determine whether the difference between the input and output values ​​and the feedback electromagnetic damping torque at time t-1 is less than or equal to a preset switching threshold. If so, switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system; otherwise, do not switch.

[0015] Furthermore, the preset switching threshold is 0.03.

[0016] A second aspect of this application provides a switching system for a wind turbine drive simulation system, the system comprising:

[0017] The acquisition module is used to acquire in real time the blade aerodynamic torque output by the wind turbine blade simulation system and the feedback electromagnetic damping torque output by the generator simulation system in the wind turbine simulation.

[0018] The first determining module is used to determine the initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment based on the blade aerodynamic torque.

[0019] The judgment module is used to determine whether the wind turbine drive simulation system should be switched from a unidirectional drive system to a bidirectional switching drive system at the current moment based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque.

[0020] Preferably, the initial electromagnetic damping torque is calculated using the following formula:

[0021]

[0022] In the formula, T ec,t Let T be the initial electromagnetic damping torque at the current time t. m,t Δt represents the aerodynamic torque of the wind turbine blade simulation system output at the current time t, K represents the steady-state transmission ratio of the wind turbine drive simulation system, and Δt represents the step size.

[0023] Furthermore, the determination module includes:

[0024] The first determining unit is used to determine the difference between the initial electromagnetic damping torque at time t-1 and the feedback electromagnetic damping torque at time t-1.

[0025] The switching unit is used to determine whether the difference and the feedback electromagnetic damping torque at time t-1 are less than or equal to a preset switching threshold. If so, the wind turbine drive simulation system is switched from a unidirectional drive system to a bidirectional switching drive system; otherwise, no switching is performed.

[0026] Furthermore, the preset switching threshold is 0.03.

[0027] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method described in the first aspect embodiment.

[0028] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the method described in the first aspect.

[0029] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0030] This application proposes a switching method and system for a wind turbine drive simulation system. The method includes: real-time acquisition of the blade aerodynamic torque output by the wind turbine blade simulation system and the feedback electromagnetic damping torque output by the generator simulation system in a wind turbine generator simulation; determining the initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment based on the blade aerodynamic torque; and determining whether to switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system at the current moment based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque. The technical solution proposed in this application maximizes the operational stability of the wind turbine drive simulation system and enables the wind turbine drive simulation system to reach stability at an optimal speed.

[0031] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 This is a flowchart illustrating a switching method for a wind turbine drive simulation system according to an embodiment of this application;

[0034] Figure 2 This is a structural diagram of a switching system for a wind turbine drive simulation system according to an embodiment of this application;

[0035] Figure 3 This is a structural diagram of a judgment module provided according to an embodiment of this application. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0037] This application proposes a switching method and system for a wind turbine drive simulation system. The method includes: real-time acquisition of the blade aerodynamic torque output by the wind turbine blade simulation system and the feedback electromagnetic damping torque output by the generator simulation system in a wind turbine generator simulation; determining the initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment based on the blade aerodynamic torque; and determining whether to switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system at the current moment based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque. The technical solution proposed in this application maximizes the operational stability of the wind turbine drive simulation system and enables the wind turbine drive simulation system to reach stability at an optimal speed.

[0038] The following description, with reference to the accompanying drawings, illustrates a switching method and system for a wind turbine drive simulation system according to an embodiment of this application.

[0039] Example 1

[0040] Figure 1 This is a flowchart of a switching method for a wind turbine drive simulation system according to an embodiment of this application, as shown below. Figure 1 As shown, the method includes:

[0041] Step 1: Real-time acquisition of the blade aerodynamic torque output by the wind turbine blade simulation system and the feedback electromagnetic damping torque output by the generator simulation system in the wind turbine simulation.

[0042] Step 2: Determine the initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment based on the blade aerodynamic torque;

[0043] In this embodiment of the disclosure, the initial electromagnetic damping torque is calculated as follows:

[0044]

[0045] In the formula, T ec,t Let T be the initial electromagnetic damping torque at the current time t. m,t Δt represents the aerodynamic torque of the wind turbine blade simulation system output at the current time t, K represents the steady-state transmission ratio of the wind turbine drive simulation system, and Δt represents the step size.

[0046] Step 3: Determine whether to switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system at the current moment based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque.

[0047] In this embodiment of the disclosure, step 3 specifically includes:

[0048] Step 3-1: Determine the difference between the initial electromagnetic damping torque at time t-1 and the feedback electromagnetic damping torque at time t-1.

[0049] Step 3-2: Determine whether the difference and the feedback electromagnetic damping torque at time t-1 are less than or equal to a preset switching threshold. If so, switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system; otherwise, do not switch. The preset switching threshold is 0.03.

[0050] To more clearly illustrate the implementation process of a switching method for a wind turbine drive simulation system according to an embodiment of this application, a specific method embodiment will be described in detail below:

[0051] Step 1) Input the step size of the wind turbine drive simulation system as Δt. Let the current simulation time be time t. Let t = 0. The simulation enters the start stage. (The characteristic of the start stage is that the third input quantity of the wind turbine drive simulation system, Te(t), does not use the electromagnetic damping torque Tee(t) fed back by the actual simulation system, but uses the constant value Tec(t) calculated by this method. At this time, the wind turbine drive simulation system is called a unidirectional drive system.)

[0052] It should be noted that the inputs of the wind turbine drive simulation system at time t include: 1. the blade aerodynamic torque Tm(t) output by the wind turbine blade simulation system; 2. the wind turbine speed w(t) output by the generator simulation system; 3. the electromagnetic damping torque Te(t) output by the generator simulation system.

[0053] Step 2) If t = 0, proceed to step 4); if t > 0, proceed to step 3).

[0054] Step 3) According to the formula The result determines whether the simulation should exit the initial stage and enter the operation stage (the operation stage is characterized by the third input of the wind turbine drive simulation system, Te(t), using the electromagnetic damping torque Tee(t) fed back from the actual simulation system; at this time, the wind turbine drive simulation system is called a bidirectional drive system), where T... ee,t-1 The feedback electromagnetic damping torque at time t-1. If the above equation is satisfied, then proceed to the operation phase and step 5); otherwise, remain in the initial phase and proceed to step 4).

[0055] Step 4) Calculate the initial electromagnetic damping torque of the unidirectional transmission system as follows:

[0056]

[0057] Where K is the steady-state transmission ratio of the transmission system.

[0058] Step 5) Using the input quantities Tm(t), w(t), Te(t) of the current transmission simulation system, i.e., the wind turbine transmission simulation system, calculate the output quantity of the transmission system using the wind turbine transmission simulation system;

[0059] Step 6) Determine if the system has entered the running phase. If yes, this method ends and the simulated system enters formal operation; if no, let t = t + Δt and return to step 2).

[0060] In summary, the switching method for a wind turbine drive simulation system proposed in this embodiment switches between a unidirectional drive system and a bidirectional drive system during the initial stage of the simulation process and the operation stage after reaching steady state, and optimizes the duration of the initial stage. This maximizes the operational stability of the wind turbine drive simulation system and allows it to reach stability at an optimal speed.

[0061] Example 2

[0062] Figure 2 This is a structural diagram of a switching system for a wind turbine drive simulation system according to an embodiment of this application, as shown below. Figure 2 As shown, the system includes:

[0063] The acquisition module 100 is used to acquire in real time the blade aerodynamic torque output by the wind turbine blade simulation system and the feedback electromagnetic damping torque output by the generator simulation system in the wind turbine simulation.

[0064] The first determining module 200 is used to determine the initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment based on the blade aerodynamic torque.

[0065] The judgment module 300 is used to determine whether the wind turbine drive simulation system should be switched from a unidirectional drive system to a bidirectional switching drive system at the current moment based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque.

[0066] In this embodiment of the disclosure, the initial electromagnetic damping torque is calculated as follows:

[0067]

[0068] In the formula, T ec,t Let T be the initial electromagnetic damping torque at the current time t. m,tΔt represents the aerodynamic torque of the wind turbine blade simulation system output at the current time t, K represents the steady-state transmission ratio of the wind turbine drive simulation system, and Δt represents the step size.

[0069] In the embodiments disclosed herein, such as Figure 3 As shown, the judgment module 300 includes:

[0070] The first determining unit 301 is used to determine the difference between the initial electromagnetic damping torque at time t-1 and the feedback electromagnetic damping torque at time t-1.

[0071] The judgment switching unit 302 is used to determine whether the difference and the feedback electromagnetic damping torque at time t-1 are less than or equal to a preset switching threshold. If so, the wind turbine drive simulation system is switched from a unidirectional drive system to a bidirectional switching drive system; otherwise, no switching is performed.

[0072] The preset switching threshold is 0.03.

[0073] In summary, the switching system for a wind turbine drive simulation system proposed in this embodiment switches between a unidirectional drive system and a bidirectional drive system during the initial stage of the simulation process and the operation stage after reaching steady state, and optimizes the duration of the initial stage. This maximizes the operational stability of the wind turbine drive simulation system and allows it to reach stability at an optimal speed.

[0074] Example 3

[0075] To implement the above embodiments, this disclosure also proposes an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method described in Embodiment 1.

[0076] Example 4

[0077] To implement the above embodiments, this disclosure also proposes a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in Embodiment 1.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A switching method for a fan drive simulation system, characterized in that, The method includes: Real-time acquisition of blade aerodynamic torque output by the wind turbine blade simulation system and feedback electromagnetic damping torque output by the generator simulation system in wind turbine simulation. The initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment is determined based on the blade aerodynamic torque. Based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque, determine whether to switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system at the current moment; The formula for calculating the initial electromagnetic damping torque is as follows: In the formula, Let be the initial electromagnetic damping torque at the current time t. Let t be the blade aerodynamic torque output by the wind turbine blade simulation system at the current time. This represents the steady-state transmission ratio of the wind turbine drive simulation system. Step size; The step of determining whether to switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque includes: Determine the difference between the initial electromagnetic damping torque at time t-1 and the feedback electromagnetic damping torque at time t-1. Determine whether the difference between the input and output values ​​and the feedback electromagnetic damping torque at time t-1 is less than or equal to a preset switching threshold. If so, switch the wind turbine drive simulation system from a unidirectional drive system to a bidirectional switching drive system; otherwise, do not switch.

2. The method as described in claim 1, characterized in that, The preset switching threshold is 0.

03.

3. A switching system for a fan drive simulation system, characterized in that, The system includes: The acquisition module is used to acquire in real time the blade aerodynamic torque output by the wind turbine blade simulation system and the feedback electromagnetic damping torque output by the generator simulation system in the wind turbine simulation. The first determining module is used to determine the initial electromagnetic damping torque input to the wind turbine drive simulation system at the current moment based on the blade aerodynamic torque. The judgment module is used to determine whether the wind turbine drive simulation system should be switched from a unidirectional drive system to a bidirectional switching drive system at the current moment based on the initial electromagnetic damping torque and the feedback electromagnetic damping torque. The formula for calculating the initial electromagnetic damping torque is as follows: In the formula, Let be the initial electromagnetic damping torque at the current time t. Let t be the blade aerodynamic torque output by the wind turbine blade simulation system at the current time. This represents the steady-state transmission ratio of the wind turbine drive simulation system. Step size; The judgment module includes: The first determining unit is used to determine the difference between the initial electromagnetic damping torque at time t-1 and the feedback electromagnetic damping torque at time t-1. The switching unit is used to determine whether the difference and the feedback electromagnetic damping torque at time t-1 are less than or equal to a preset switching threshold. If so, the wind turbine drive simulation system is switched from a unidirectional drive system to a bidirectional switching drive system; otherwise, no switching is performed.

4. The system as described in claim 3, characterized in that, The preset switching threshold is 0.

03.

5. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the method as described in any one of claims 1-2.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-2.

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