A method and system for calculating simulation accuracy of a wind power simulation system

Abstract

The present application proposes a method and system for calculating the simulation accuracy of a wind power simulation system, the method comprising: obtaining a time series of measured inflow wind speed, a measured rotational speed sequence, and a measured output power sequence of a wind turbine at each sampling point within a preset time period; inputting the measured inflow wind speed time series at each sampling point into the wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point; inputting the measured rotational speed sequence at each sampling point into the wind power simulation system to obtain a second simulated output power sequence of the wind turbine at each sampling point; and calculating the simulation accuracy of the wind power simulation system based on the first simulated output power sequence and the second simulated output power sequence. The technical solution proposed in the present application effectively reduces the additional error caused by inaccurate wind speed measurement and can more accurately measure the simulation accuracy of the wind power simulation system.

Description

Technical Field

[0001] The present application relates to the field of precision calculation, and in particular to a simulation precision calculation method and system for a wind power simulation system. Background Art

[0002] A wind power simulation system is a computer software or hardware system used to simulate the operating characteristics of wind turbines. The system uses input wind speed data to calculate the intermediate variable speed data and ultimately obtain output power data. Simulation accuracy refers to the error between the actual wind turbine power data and the output power data of the simulation system.

[0003] Currently, simulation accuracy is determined by directly comparing the output power data of the actual wind turbine and the simulated system using the same input wind speed data, and calculating the relative error between the two. However, due to inaccurate inflow wind speed measurements of actual wind turbines, the error of the simulated system compared to the actual wind turbine consists of two components: the true error of the simulated system relative to the actual turbine; and the additional error caused by inaccurate wind speed measurements. These two errors are superimposed and cannot be distinguished, resulting in the actual error measured by the simulated system being larger than the actual value, leading to inaccurate simulation accuracy of the measured wind power simulation system. Summary of the Invention

[0004] The present application provides a method and system for calculating the simulation accuracy of a wind power simulation system, so as to at least solve the technical problem of inaccurate simulation accuracy of the wind power simulation system.

[0005] The first embodiment of the present application provides a method for calculating simulation accuracy of a wind power simulation system, the method comprising:

[0006] Obtain the measured inflow wind speed time series, measured speed series and measured output power series of the wind turbine at each sampling point within a preset time period;

[0007] Inputting the measured inflow wind speed time series at each sampling point into the wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point;

[0008] Inputting the measured rotation speed sequence at each sampling point into the wind power simulation system to obtain a second simulated output power sequence of the wind turbine generator set at each sampling point;

[0009] The simulation accuracy of the wind power simulation system is calculated according to the first simulated output power sequence and the second simulated output power sequence.

[0010] Preferably, before inputting the measured rotation speed sequence at each sampling point into the wind power simulation system, the method further includes:

[0011] Disconnect the simulation links related to wind speed input in the wind power simulation system.

[0012] Furthermore, the calculating the simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence includes:

[0013] determining the aerodynamic simulation accuracy of the wind power simulation system according to the first simulated output power sequence;

[0014] determining a non-aerodynamic simulation accuracy of the wind power simulation system according to the second simulated output power sequence;

[0015] The simulation accuracy of the wind power simulation system is calculated according to the aerodynamic simulation accuracy and the non-aerodynamic simulation accuracy of the wind power simulation system.

[0016] Furthermore, the calculation formula for the aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0017]

[0018] The calculation formula for the non-aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0019]

[0020] Where S1 is the aerodynamic simulation accuracy of the wind power simulation system, P 1,n,t is the output power of the wind turbine at the nth sampling point at time t in the first simulated output power sequence, P 0,n,t is the measured output power of the wind turbine at the nth sampling point at time t, T is the total number of moments in the preset period, N is the total number of sampling points, P 2,n,t is the output power of the wind turbine at the nth sampling point at time t in the second simulated output power sequence.

[0021] Furthermore, the simulation accuracy calculation formula of the wind power simulation system is as follows:

[0022]

[0023] Where S0 is the simulation accuracy of the wind power simulation system.

[0024] A second embodiment of the present application provides a simulation accuracy calculation system for a wind power simulation system, the system comprising:

[0025] An acquisition module is used to obtain a time series of measured inflow wind speed, a time series of measured rotation speed, and a time series of measured output power of the wind turbine at each sampling point within a preset time period;

[0026] A first determining module is configured to input the measured inflow wind speed time series at each sampling point into a wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point;

[0027] A second determining module is configured to input the measured rotational speed sequence at each sampling point into a wind power simulation system to obtain a second simulated output power sequence of the wind turbine generator set at each sampling point;

[0028] A calculation module is used to calculate the simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence.

[0029] Preferably, the system further comprises: a disconnect module;

[0030] The disconnection module is used to disconnect the simulation links related to wind speed input in the wind power simulation system before inputting the measured speed sequence at each sampling point into the wind power simulation system.

[0031] Furthermore, the calculation module includes:

[0032] a first determining unit, configured to determine an aerodynamic simulation accuracy of the wind power simulation system according to the first simulated output power sequence;

[0033] a second determining unit, configured to determine a non-aerodynamic simulation accuracy of the wind power simulation system according to the second simulated output power sequence;

[0034] A calculation unit is used to calculate the simulation accuracy of the wind power simulation system according to the aerodynamic simulation accuracy and non-aerodynamic simulation accuracy of the wind power simulation system.

[0035] Furthermore, the calculation formula for the aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0036]

[0037] The calculation formula for the non-aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0038]

[0039] Where S1 is the aerodynamic simulation accuracy of the wind power simulation system, P 1,n,t is the output power of the wind turbine at the nth sampling point at time t in the first simulated output power sequence, P 0,n,t is the measured output power of the wind turbine at the nth sampling point at time t, T is the total number of moments in the preset period, N is the total number of sampling points, P 2,n,t is the output power of the wind turbine at the nth sampling point at time t in the second simulated output power sequence.

[0040] Furthermore, the simulation accuracy calculation formula of the wind power simulation system is as follows:

[0041]

[0042] Where S0 is the simulation accuracy of the wind power simulation system.

[0043] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0044] The present application proposes a method and system for calculating the simulation accuracy of a wind power simulation system, the method comprising: obtaining a time series of measured inflow wind speed, a measured rotational speed sequence, and a measured output power sequence of a wind turbine at each sampling point within a preset time period; inputting the measured inflow wind speed time series at each sampling point into the wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point; inputting the measured rotational speed sequence at each sampling point into the wind power simulation system to obtain a second simulated output power sequence of the wind turbine at each sampling point; and calculating the simulation accuracy of the wind power simulation system based on the first simulated output power sequence and the second simulated output power sequence. The technical solution proposed in the present application effectively reduces the additional error caused by inaccurate wind speed measurement and can more accurately measure the simulation accuracy of the simulation system.

[0045] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0047] Figure 1 This is a flow chart of a method for calculating simulation accuracy of a wind power simulation system provided according to one embodiment of the present application;

[0048] Figure 2 This is a structural diagram of a simulation accuracy calculation system for a wind power simulation system provided according to one embodiment of the present application;

[0049] Figure 3 A structural diagram of a computing module provided according to one embodiment of the present application. DETAILED DESCRIPTION

[0050] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0051] The present application proposes a method and system for calculating the simulation accuracy of a wind power simulation system, the method comprising: obtaining a time series of measured inflow wind speed, a measured rotational speed sequence, and a measured output power sequence of a wind turbine at each sampling point within a preset time period; inputting the measured inflow wind speed time series at each sampling point into the wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point; inputting the measured rotational speed sequence at each sampling point into the wind power simulation system to obtain a second simulated output power sequence of the wind turbine at each sampling point; and calculating the simulation accuracy of the wind power simulation system based on the first simulated output power sequence and the second simulated output power sequence. The technical solution proposed in the present application effectively reduces the additional error caused by inaccurate wind speed measurement and can more accurately measure the simulation accuracy of the simulation system.

[0052] The following describes a simulation accuracy calculation method and system for a wind power simulation system according to an embodiment of the present application with reference to the accompanying drawings.

[0053] Example 1

[0054] Figure 1 This is a flow chart of a method for calculating simulation accuracy of a wind power simulation system according to one embodiment of the present application. Figure 1 As shown, the method includes:

[0055] Step 1: Obtain the measured inflow wind speed time series, measured speed series, and measured output power series of the wind turbine at each sampling point within a preset time period;

[0056] Step 2: Input the measured inflow wind speed time series at each sampling point into the wind power simulation system to obtain the first simulated output power series of the wind turbine at each sampling point;

[0057] It should be noted that, before inputting the measured rotation speed sequence at each sampling point into the wind power simulation system, the process further includes:

[0058] Disconnect the simulation links related to wind speed input in the wind power simulation system.

[0059] Step 3: Inputting the measured rotational speed sequence at each sampling point into the wind power simulation system to obtain a second simulated output power sequence of the wind turbine at each sampling point;

[0060] Step 4: Calculate the simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence.

[0061] In the embodiment of the present disclosure, step 4 specifically includes:

[0062] Step 4-1: determining the aerodynamic simulation accuracy of the wind power simulation system according to the first simulated output power sequence;

[0063] Step 4-2: determining the non-aerodynamic simulation accuracy of the wind power simulation system according to the second simulated output power sequence;

[0064] Step 4-3: Calculate the simulation accuracy of the wind power simulation system according to the aerodynamic simulation accuracy and non-aerodynamic simulation accuracy of the wind power simulation system.

[0065] The calculation formula for the aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0066]

[0067] The calculation formula for the non-aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0068]

[0069] Where S1 is the aerodynamic simulation accuracy of the wind power simulation system, P 1,n,t is the output power of the wind turbine at the nth sampling point at time t in the first simulated output power sequence, P 0,n,t is the measured output power of the wind turbine at the nth sampling point at time t, T is the total number of moments in the preset period, N is the total number of sampling points, P 2,n,t is the output power of the wind turbine at the nth sampling point at time t in the second simulated output power sequence.

[0070] Furthermore, the simulation accuracy calculation formula of the wind power simulation system is as follows:

[0071]

[0072] Where S0 is the simulation accuracy of the wind power simulation system.

[0073] In order to more clearly illustrate the implementation process of a simulation accuracy calculation method for a wind power simulation system according to an embodiment of the present application, a specific method embodiment is described in detail below:

[0074] 1) Input the inflow wind speed time series vwind0(t) (in m / s), the speed series w0(t) (in r / min), and the output power series P0(t) (in MW) measured at N sampling points during actual wind turbine operation over the study period (e.g., 1 hour, sampling time 1 second). Accuracy indicators are uniformly expressed as a number between 0 and 1, usually expressed as a percentage.

[0075] 2) Take vwind0(t) as input and input it to the input end of the wind power simulation system to obtain the speed sequence w1(t) and output power sequence P1(t) calculated by the wind power simulation system, that is, the first simulated output power sequence.

[0076] 3) Calculate the initial simulation system accuracy, i.e. the aerodynamic simulation accuracy of the wind power simulation system:

[0077]

[0078] 4) Disconnect the simulation link related to the wind speed input in the simulation system, use the rotation speed w0(t) as input, and obtain the output power sequence P2(t) calculated by the wind power simulation system.

[0079] 5) Calculate the accuracy of the non-pneumatic simulation system, that is, the accuracy of the non-pneumatic simulation of the wind power simulation system:

[0080]

[0081] 6) Calculate the simulation accuracy of the wind power simulation system:

[0082]

[0083] To sum up, the simulation accuracy calculation method of a wind power simulation system proposed in this embodiment effectively reduces the additional error caused by inaccurate wind speed measurement by measuring and calculating the intermediate variable speed data of the simulation system, and can more accurately measure the simulation accuracy of the simulation system.

[0084] Example 2

[0085] Figure 2 This is a structural diagram of a simulation accuracy calculation system for a wind power simulation system provided according to one embodiment of the present application. Figure 2 As shown, the system includes:

[0086] An acquisition module 100 is used to acquire a time series of measured inflow wind speed, a time series of measured rotation speed, and a time series of measured output power of a wind turbine at each sampling point within a preset time period;

[0087] The first determination module 200 is configured to input the measured inflow wind speed time series at each sampling point into a wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point;

[0088] The second determining module 300 is configured to input the measured rotational speed sequence at each sampling point into a wind power simulation system to obtain a second simulated output power sequence of the wind turbine at each sampling point;

[0089] The calculation module 400 is configured to calculate the simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence.

[0090] In the embodiment of the present disclosure, Figure 3 As shown, the system further includes: a disconnection module 500;

[0091] The disconnection module 500 is configured to disconnect simulation links related to wind speed input in the wind power simulation system before inputting the measured rotation speed sequence at each sampling point into the wind power simulation system.

[0092] Further, such as Figure 3 As shown, the calculation module 400 includes:

[0093] A first determining unit 401 is configured to determine the aerodynamic simulation accuracy of the wind power simulation system according to the first simulated output power sequence;

[0094] A second determining unit 402 is configured to determine a non-aerodynamic simulation accuracy of the wind power simulation system according to the second simulated output power sequence;

[0095] The calculation unit 403 is configured to calculate the simulation accuracy of the wind power simulation system according to the aerodynamic simulation accuracy and the non-aerodynamic simulation accuracy of the wind power simulation system.

[0096] The calculation formula for the aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0097]

[0098] The calculation formula for the non-aerodynamic simulation accuracy of the wind power simulation system is as follows:

[0099]

[0100] Where S1 is the aerodynamic simulation accuracy of the wind power simulation system, P 1,n,t is the output power of the wind turbine at the nth sampling point at time t in the first simulated output power sequence, P 0,n,t is the measured output power of the wind turbine at the nth sampling point at time t, T is the total number of moments in the preset period, N is the total number of sampling points, P2,n,t is the output power of the wind turbine at the nth sampling point at time t in the second simulated output power sequence.

[0101] Furthermore, the simulation accuracy calculation formula of the wind power simulation system is as follows:

[0102]

[0103] Where S0 is the accuracy of the wind power simulation system.

[0104] To sum up, the simulation accuracy calculation system of a wind power simulation system proposed in this embodiment effectively reduces the additional error caused by inaccurate wind speed measurement by measuring and calculating the intermediate variable speed data of the simulation system, and can more accurately measure the simulation accuracy of the simulation system.

[0105] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0106] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0107] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for calculating simulation accuracy of a wind power simulation system, characterized in that: The method comprises: Obtain the measured inflow wind speed time series, measured speed series and measured output power series of the wind turbine at each sampling point within a preset time period; Inputting the measured inflow wind speed time series at each sampling point into the wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point; Inputting the measured rotation speed sequence at each sampling point into the wind power simulation system to obtain a second simulated output power sequence of the wind turbine generator set at each sampling point; Calculating the simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence; The calculating the simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence includes: determining the aerodynamic simulation accuracy of the wind power simulation system according to the first simulated output power sequence; determining a non-aerodynamic simulation accuracy of the wind power simulation system according to the second simulated output power sequence; Calculating the simulation accuracy of the wind power simulation system according to the aerodynamic simulation accuracy and the non-aerodynamic simulation accuracy of the wind power simulation system; The simulation accuracy calculation formula of the wind power simulation system is as follows: Where, It is the simulation accuracy of the wind power simulation system.

2. The method according to claim 1, wherein Before inputting the measured rotation speed sequence at each sampling point into the wind power simulation system, the method further includes: Disconnect the simulation links related to wind speed input in the wind power simulation system.

3. The method according to claim 1, wherein The calculation formula for the aerodynamic simulation accuracy of the wind power simulation system is as follows: The calculation formula for the non-aerodynamic simulation accuracy of the wind power simulation system is as follows: Where, For the aerodynamic simulation accuracy of the wind power simulation system, is the output power of the wind turbine at the nth sampling point at time t in the first simulated output power sequence, is the measured output power of the wind turbine at the nth sampling point at time t, is the total number of moments in the preset period, is the total number of sampling points, is the output power of the wind turbine at the nth sampling point at time t in the second simulated output power sequence.

4. A simulation accuracy calculation system for a wind power simulation system, characterized in that: The system comprises: An acquisition module is used to obtain a time series of measured inflow wind speed, a time series of measured rotation speed, and a time series of measured output power of the wind turbine at each sampling point within a preset time period; A first determining module is configured to input the measured inflow wind speed time series at each sampling point into a wind power simulation system to obtain a first simulated output power sequence of the wind turbine at each sampling point; A second determining module is configured to input the measured rotational speed sequence at each sampling point into a wind power simulation system to obtain a second simulated output power sequence of the wind turbine generator set at each sampling point; a calculation module, configured to calculate a simulation accuracy of the wind power simulation system according to the first simulated output power sequence and the second simulated output power sequence; The computing module includes: a first determining unit, configured to determine an aerodynamic simulation accuracy of the wind power simulation system according to the first simulated output power sequence; a second determining unit, configured to determine a non-aerodynamic simulation accuracy of the wind power simulation system according to the second simulated output power sequence; a calculation unit, configured to calculate a simulation accuracy of the wind power simulation system according to an aerodynamic simulation accuracy and a non-aerodynamic simulation accuracy of the wind power simulation system; The simulation accuracy calculation formula of the wind power simulation system is as follows: Where, It is the simulation accuracy of the wind power simulation system.

5. The system according to claim 4, wherein: The system further comprises: a disconnect module; The disconnection module is used to disconnect the simulation links related to wind speed input in the wind power simulation system before inputting the measured speed sequence at each sampling point into the wind power simulation system.

6. The system according to claim 4, wherein: The calculation formula for the aerodynamic simulation accuracy of the wind power simulation system is as follows: The calculation formula for the non-aerodynamic simulation accuracy of the wind power simulation system is as follows: Where, For the aerodynamic simulation accuracy of the wind power simulation system, is the output power of the wind turbine at the nth sampling point at time t in the first simulated output power sequence, is the measured output power of the wind turbine at the nth sampling point at time t, is the total number of moments in the preset period, is the total number of sampling points, is the output power of the wind turbine at the nth sampling point at time t in the second simulated output power sequence.

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