Electromagnetic Transient Standardized Modeling Method and Device for Permanent Magnet Direct Drive Wind Turbine

Abstract

The present invention belongs to the technical field of power transmission and distribution, and discloses an electromagnetic transient standardization modeling method and device for a permanent magnet direct drive wind turbine. The method includes: obtaining data of the permanent magnet direct drive wind turbine to be standardized and modeled, and building a primary circuit and an analog circuit of the permanent magnet direct drive wind turbine in a digital-analog hybrid simulation test software, and building a digital-analog hybrid simulation test environment for the generator; testing the response characteristics of the generator under different voltage sag conditions or voltage rise conditions according to the test environment; building a primary circuit of the generator and a standard structured controller in an electromagnetic transient simulation software; fitting and identifying the control parameters of the high and low ride-through control links of the generator standard structured controller according to the response characteristics, so as to complete the standardization modeling of the electromagnetic transient model. The method of the present invention solves the problem in the prior art that there is no relevant standardization modeling method, resulting in no effective fault ride-through ability evaluation method for the permanent magnet direct drive wind turbine.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission and distribution, and particularly relates to a method and device for standardizing the electromagnetic transient modeling of a permanent magnet direct drive wind turbine Background Art

[0002] To solve the problems of shortage of fossil resources and ecological environment pollution, the government has successively introduced a series of policies to encourage the development of clean and renewable energy. The development of clean and renewable energy such as solar energy and wind energy has received extensive attention, especially the new energy power generation mainly based on wind power generation and solar power generation has developed rapidly. However, as the proportion of new energy installed capacity in the power system power supply side is getting higher and higher, its operating characteristics have an increasingly greater impact on the safe and stable operation of the power system

[0003] To cope with the impact brought by the large-scale grid connection of new energy units, countries around the world have formulated strict grid connection requirements for new energy units, and the fault ride-through ability is often considered to be one of the most important ones. At present, the research on the fault ride-through ability of new energy units has been widely carried out and a series of research results have been obtained. Through literature research, it can be known that the fault ride-through ability, as an inherent attribute of new energy units themselves, mainly depends on the high and low voltage ride-through control strategies adopted by new energy units and their corresponding high and low voltage ride-through control parameters. Generally, there are mainly two forms of fault ride-through control strategies for new energy units, namely specified power control and specified current control, and the specified current control is mainly used

[0004] However, there are still certain difficulties in the assessment of the fault ride-through ability of the power system at present. For the AC system connected with a permanent magnet direct drive wind turbine, the main component of the permanent magnet direct drive wind turbine is a back-to-back converter. As a power electronic device, the back-to-back converter has a fast response speed and requires an electromagnetic transient simulation model with a simulation time scale of microseconds to perform accurate simulation. At present, there is no standardized modeling method for the electromagnetic transient simulation model of the permanent magnet direct drive wind turbine, which will lead to the problem that there is no effective fault ride-through ability assessment method for the permanent magnet direct drive wind turbine

[0005] In view of the increasing impact of the fault ride-through ability of new energy units on the safe and stable operation of the power grid, it is urgent to accurately simulate the fault ride-through performance of the permanent magnet direct drive wind turbine to better analyze the response characteristics of the permanent magnet direct drive wind turbine during fault ride-through and measure the impact of its grid connection on the safe and stable operation of the power grid. Therefore, a method for standardizing the electromagnetic transient simulation model of the permanent magnet direct drive wind turbine is needed Summary of the Invention

[0006] The embodiments of the present invention provide an electromagnetic transient standardized modeling method and device for a permanent magnet direct drive wind turbine, aiming to solve the problem in the prior art that there is no standardized modeling method for the electromagnetic transient simulation model of a permanent magnet direct drive wind turbine, resulting in no effective fault ride-through ability evaluation method for the permanent magnet direct drive wind turbine. To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary part is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description below.

[0007] According to the first aspect of the embodiments of the present invention, there is provided an electromagnetic transient standardized modeling method for a permanent magnet direct drive wind turbine, including:

[0008] Obtain the modeling data of the permanent magnet direct drive wind turbine to be standardized modeled, and build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data. Build the simulation circuit of the connected AC system according to the primary circuit, and build the digital-analog hybrid simulation test environment of the permanent magnet direct drive wind turbine according to the simulation circuit;

[0009] According to the digital-analog hybrid simulation test environment, test the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions, and obtain the response characteristic parameters;

[0010] Build the primary circuit and the standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software;

[0011] Fit and identify the control parameters of the high and low ride-through control links of the standard structured controller of the permanent magnet direct drive wind turbine according to the response characteristic parameters to complete the standardized modeling of the electromagnetic transient model.

[0012] In one embodiment, the step of obtaining the modeling data of the permanent magnet direct drive wind turbine to be standardized modeled in this method further includes:

[0013] The modeling data at least includes the primary circuit topology of the permanent magnet direct drive wind turbine, and the rated parameters of components such as the generator, back-to-back converter, and AC filter.

[0014] In one embodiment, the step of building the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data further includes:

[0015] Build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the primary circuit topology of the permanent magnet direct drive wind turbine. The primary circuit at least includes the generator, back-to-back converter, and AC filter.

[0016] In one embodiment, the step of building an analog circuit of the AC system accessed according to the primary circuit further includes:

[0017] The analog circuit includes at least an ideal voltage source and an equivalent impedance.

[0018] In one embodiment, the step of building a digital-analog hybrid simulation test environment for a permanent magnet direct drive wind turbine according to the analog circuit further includes:

[0019] Connect the physical interface box of the digital-analog hybrid simulation test software to the controller of the permanent magnet direct drive wind turbine to build a digital-analog hybrid simulation test environment for the permanent magnet direct drive wind turbine.

[0020] In one embodiment, the step of testing the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions and obtaining response characteristic parameters according to the digital-analog hybrid simulation test environment further includes:

[0021] The response characteristic parameters include at least the terminal voltage V, active power P, and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions.

[0022] In one embodiment, the step of building the primary circuit and the standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software further includes:

[0023] The primary circuit of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software is consistent with that in the digital-analog hybrid simulation test software.

[0024] In one embodiment, the step of building the primary circuit and the standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software further includes:

[0025] The standard structured controller includes at least high voltage fault ride-through control, low voltage fault ride-through control, power outer loop controller, current inner loop controller, phase-locked loop, electrical quantity measurement and coordinate transformation, coordinate inverse transformation and modulation trigger link.

[0026] In one embodiment, the digital-analog hybrid simulation test software includes any one of RT-LAB and RTDS.

[0027] In one embodiment, the electromagnetic transient simulation software includes any one of PSCAD / EMTDC and ADPSS.

[0028] In one embodiment, the step of building an analog circuit of the AC system accessed according to the primary circuit further includes:

[0029] An ideal voltage source is connected in series with an equivalent impedance, and the equivalent impedance is adjustable.

[0030] In one embodiment, the step of building an analog circuit of the AC system accessed according to the primary circuit in this method further includes:

[0031] The adjustment range of the equivalent impedance is based on the short-circuit ratio Xk = 2 to 10.

[0032] In one embodiment, the step of fitting and identifying the control parameters of the high and low voltage ride-through control link of the standard structured controller of the permanent magnet direct drive wind turbine according to the response characteristic parameters in this method further includes:

[0033] Using the least squares method to fit and identify the control parameters of the high and low voltage ride-through control link of the standard structured controller of the permanent magnet direct drive wind turbine according to the terminal voltage V, active power P, and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions.

[0034] According to the second aspect of the embodiments of the present invention, there is provided an electromagnetic transient standardized modeling device for a permanent magnet direct drive wind turbine.

[0035] In one embodiment, the device includes: a simulation test environment building module, a response characteristic test module, an electromagnetic transient building module, and a standardized modeling module; wherein,

[0036] The simulation test environment building module is used to obtain the modeling data of the permanent magnet direct drive wind turbine to be standardized modeled, build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data, build the analog circuit of the accessed AC system according to the primary circuit, and build the digital-analog hybrid simulation test environment of the permanent magnet direct drive wind turbine according to the analog circuit;

[0037] The response characteristic test module is used to test the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions according to the digital-analog hybrid simulation test environment, and obtain the response characteristic parameters;

[0038] The electromagnetic transient building module is used to build the primary circuit and the standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software;

[0039] The standardized modeling module is used to fit and identify the control parameters of the high and low voltage ride-through control link of the standard structured controller of the permanent magnet direct drive wind turbine according to the response characteristic parameters to complete the standardized modeling of the electromagnetic transient model.

[0040] According to the third aspect of the embodiments of the present invention, there is provided a computer device.

[0041] In some embodiments, a computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of the method described in the first aspect are implemented.

[0042] According to a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided.

[0043] In some embodiments, a computer program is stored on the computer-readable storage medium; the computer program is executed by a processor to implement the steps of the method described in the first aspect.

[0044] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0045] For the application scenario of evaluating the voltage stability of the power system after the permanent magnet direct-drive wind turbine is connected to the grid, the electromagnetic transient standardized modeling method of the permanent magnet direct-drive wind turbine considering the low and high voltage ride-through control proposed in the electromagnetic transient standardized modeling method of the permanent magnet direct-drive wind turbine of the present invention fully considers the primary circuit of the permanent magnet direct-drive wind turbine and its controller structure considering the low and high voltage ride-through control, and determines the fault ride-through control parameters of the electromagnetic transient standard structured controller of the permanent magnet direct-drive wind turbine by means of digital-analog hybrid simulation testing, greatly improving the accuracy of simulating the fault ride-through ability of the permanent magnet direct-drive wind turbine, and being able to well serve for evaluating the voltage stability of the power system after the permanent magnet direct-drive wind turbine is connected to the grid, providing certain reference and guidance for the grid connection planning and actual operation of the wind farm mainly composed of permanent magnet direct-drive wind turbines.

[0046] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention, and are used together with the specification to explain the principles of the present invention.

[0048] Figure 1 is a flowchart of the electromagnetic transient standardized modeling method of the permanent magnet direct-drive wind turbine provided by the embodiments of the present application;

[0049] Figure 2 A schematic diagram of the digital-analog hybrid simulation test environment provided by the embodiments of the present application;

[0050] Figure 3 is a schematic structural diagram of the primary circuit of the electromagnetic transient model provided by the embodiments of the present application;

[0051] Figure 4 is a schematic structural diagram of the standard structured controller of the electromagnetic transient model provided by the embodiments of the present application

[0052] Figure 5 It is a structural diagram of an electromagnetic transient standardization modeling device for a permanent magnet direct drive wind turbine provided by an embodiment of the present application;

[0053] Figure 6 It is a schematic structural diagram of a computer device shown according to an exemplary embodiment. Specific Embodiments

[0054] The following description and drawings fully illustrate the specific embodiments herein so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims and all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another element, and do not require or imply any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a structure, device or equipment including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such structure, device or equipment. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the structure, device or equipment including the element. The embodiments herein are described in a progressive manner, and the key points of each embodiment are the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0055] Herein, unless otherwise specified, the term "plurality" means two or more.

[0056] Figure 1 The flowchart of the electromagnetic transient standardization modeling method for the permanent magnet direct drive wind turbine of the present invention is shown, as Figure 1 shown:

[0057] S1: Obtain the modeling data of the permanent magnet direct drive wind turbine to be standardized modeled, build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data, build the simulation circuit of the connected AC system according to the primary circuit, and build the digital-analog hybrid simulation test environment of the permanent magnet direct drive wind turbine according to the simulation circuit.

[0058] In specific implementation, obtain the data of the permanent magnet direct drive wind turbine to be standardized modeled, including the primary circuit topology structure of the permanent magnet direct drive wind turbine, the rated parameters of components such as the generator, back-to-back converter, and AC filter.

[0059] Further, a primary circuit of the permanent magnet direct drive wind turbine is built in the digital - analog hybrid simulation test software according to the topology of the primary circuit of the permanent magnet direct drive wind turbine, specifically including power components such as generators, back - to - back converters, and AC filters; optionally, the digital - analog hybrid simulation test software includes but is not limited to RT - LAB, RTDS, etc.

[0060] In a specific implementation, an analog circuit of the AC system to which the permanent magnet direct drive wind turbine is connected is built in the digital - analog hybrid simulation test software, specifically including power components such as ideal voltage sources and equivalent impedances, and is connected to the controller of the permanent magnet direct drive wind turbine through the physical interface box of the digital - analog hybrid simulation test software to build a digital - analog hybrid simulation test environment for the permanent magnet direct drive wind turbine.

[0061] Optionally, the ideal voltage source is in series with the equivalent impedance, and the equivalent impedance is adjustable, and is set according to the short - circuit ratio Xk = 2 - 10.

[0062] As Figure 2 shown, the embodiment of the present application shows a connection relationship in which the actual controller of a permanent magnet direct drive wind turbine is connected to the digital - analog hybrid simulation test software through a physical interface box.

[0063] Based on this, this step completes the construction of the digital - analog hybrid simulation test environment for the permanent magnet direct drive wind turbine.

[0064] S2: According to the digital - analog hybrid simulation test environment, test the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions, and obtain response characteristic parameters.

[0065] In a specific implementation, based on the digital - analog hybrid simulation test environment of the permanent magnet direct drive wind turbine built in step S1, test the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions. Specifically, obtain the terminal voltage V, active power P, and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions.

[0066] S3: Build a primary circuit and a standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software.

[0067] In a specific implementation, when building a primary circuit and a standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software, it should be noted that the primary circuit built in the electromagnetic transient simulation software is consistent with the primary circuit of the permanent magnet direct drive wind turbine in the digital - analog hybrid simulation test software. As Figure 3 shown, the embodiment of the present application shows the structure of a primary circuit of a permanent magnet direct drive wind turbine built in the ADPSS electromagnetic transient simulation software.

[0068] In specific implementation, the standard structured controller specifically includes links such as high-voltage fault ride-through control, low-voltage fault ride-through control, power outer-loop controller, current inner-loop controller, phase-locked loop, electrical quantity measurement and coordinate transformation, coordinate inverse transformation and modulation trigger. As Figure 4 shown, the embodiment of the present application further shows the structure of the standard structured controller of a permanent magnet direct-drive wind turbine built in the ADPSS electromagnetic transient simulation software.

[0069] Optionally, the electromagnetic transient simulation test software includes but is not limited to PSCAD / EMTDC, ADPSS, etc.

[0070] Optionally, the parameters of links such as the power outer-loop controller, current inner-loop controller, phase-locked loop, electrical quantity measurement and coordinate transformation, coordinate inverse transformation and modulation trigger are set with typical parameters.

[0071] S4: According to the response characteristic parameters, fit and identify the control parameters of the high and low ride-through control links of the standard structured controller of the permanent magnet direct-drive wind turbine to complete the standardized modeling of the electromagnetic transient model.

[0072] In specific implementation, according to the terminal voltage V, active power P and reactive power Q of the permanent magnet direct-drive wind turbine under different voltage dip conditions or voltage rise conditions, fit and identify the parameters of the high-voltage fault ride-through control and low-voltage fault ride-through control links of the standard structured controller in the electromagnetic transient model of the permanent magnet direct-drive wind turbine.

[0073] Optionally, the least squares method is used for fitting and identification.

[0074] In some embodiments of the present application, after completing the modeling, use the electromagnetic transient model of the permanent magnet direct-drive wind turbine to simulate the response characteristics of the permanent magnet direct-drive wind turbine under different voltage dip conditions or voltage rise conditions, and the fault ride-through performance of the permanent magnet direct-drive wind turbine in the grid electromagnetic transient simulation can be evaluated.

[0075] It should be understood that although the steps in the flowchart are sequentially shown according to the indication of the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the figure may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

[0076] Please refer toFigure 5 , an embodiment of the present application provides an electromagnetic transient standardized modeling device for a permanent magnet direct drive wind turbine, including a simulation test environment building module 10, a response characteristic test module 20, an electromagnetic transient building module 30, and a standardized modeling module 40; wherein:

[0077] The simulation test environment building module 10 is configured to obtain the modeling data of the permanent magnet direct drive wind turbine to be standardized, build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data, build the analog circuit of the connected AC system according to the primary circuit, and build the digital-analog hybrid simulation test environment of the permanent magnet direct drive wind turbine according to the analog circuit;

[0078] The response characteristic test module 20 is configured to test the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions according to the digital-analog hybrid simulation test environment, and obtain the response characteristic parameters;

[0079] The electromagnetic transient building module 30 is configured to build the primary circuit of the permanent magnet direct drive wind turbine and the standard structured controller in the electromagnetic transient simulation software;

[0080] The standardized modeling module 40 is configured to fit and identify the control parameters of the high and low ride-through control links of the standard structured controller of the permanent magnet direct drive wind turbine according to the response characteristic parameters, so as to complete the standardized modeling of the electromagnetic transient model.

[0081] For the specific limitations of the above electromagnetic transient standardized modeling device of the permanent magnet direct drive wind turbine, reference can be made to the limitations of the electromagnetic transient standardized modeling method of the permanent magnet direct drive wind turbine in the above text, which will not be elaborated here. Each module in the above electromagnetic transient standardized modeling device of the permanent magnet direct drive wind turbine can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or be independent of it, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above modules.

[0082] In another embodiment of the present application, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 6As shown. The computer device includes a processor, a memory, and a network interface connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store static information and dynamic information data. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, it implements the steps in the above method embodiments.

[0083] Those skilled in the art can understand that Figure 6 the structure shown in is only a block diagram of some structures related to the solution of the present invention, and does not constitute a limitation on the computer device to which the solution of the present invention is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different component layout.

[0084] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it implements the steps in the above method embodiments.

[0085] Those of ordinary skill in the art can understand that all or part of the processes in the above method embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above method embodiments. Among them, any reference to a memory, storage, database, or other medium used in the various embodiments provided by the present invention can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0086] The present invention is not limited to the structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. An electromagnetic transient standardization modeling method for a permanent magnet direct drive wind turbine, characterized in that, it includes: Obtain the modeling data of the permanent magnet direct drive wind turbine to be standardized modeled. The modeling data at least includes the primary circuit topology of the permanent magnet direct drive wind turbine, the rated parameters of the generator, the back-to-back converter, and the AC filter components. Build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data, build the simulation circuit of the connected AC system according to the primary circuit, and connect to the controller of the permanent magnet direct drive wind turbine through the physical interface box of the digital-analog hybrid simulation test software according to the simulation circuit to build the digital-analog hybrid simulation test environment of the permanent magnet direct drive wind turbine; According to the digital-analog hybrid simulation test environment, test the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions, and obtain the response characteristic parameters; Build the primary circuit and the standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software; According to the terminal voltage V, active power P, and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions, use the least squares method to fit and identify the control parameters of the high and low ride-through control links of the standard structured controller of the permanent magnet direct drive wind turbine to complete the standardization modeling of the electromagnetic transient model.

2. The electromagnetic transient standardization modeling method for a permanent magnet direct drive wind turbine according to claim 1, characterized in that, The step of building the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the modeling data further includes: Build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software according to the primary circuit topology of the permanent magnet direct drive wind turbine. The primary circuit at least includes a generator, a back-to-back converter, and an AC filter.

3. The electromagnetic transient standardization modeling method for a permanent magnet direct drive wind turbine according to claim 2, characterized in that, The step of building the simulation circuit of the connected AC system according to the primary circuit further includes: The simulation circuit at least includes an ideal voltage source and an equivalent impedance.

4. The electromagnetic transient standardization modeling method for a permanent magnet direct drive wind turbine according to claim 1, characterized in that, The step of testing the response characteristics of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions and obtaining the response characteristic parameters according to the digital-analog hybrid simulation test environment further includes: The response characteristic parameters at least include the terminal voltage V, active power P, and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions.

5. The electromagnetic transient standardization modeling method for a permanent magnet direct drive wind turbine according to claim 4, characterized in that, The step of building the primary circuit and the standard structured controller of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software further includes: The primary circuit of the permanent magnet direct drive wind turbine in the electromagnetic transient simulation software is consistent with that in the digital-analog hybrid simulation test software.

6. The electromagnetic transient standardization modeling method of the permanent magnet direct drive wind turbine according to claim 4, wherein, the steps of building the primary circuit of the permanent magnet direct drive wind turbine and the standard structured controller in the electromagnetic transient simulation software further include: The standard structured controller at least includes high voltage fault ride-through control, low voltage fault ride-through control, power outer loop controller, current inner loop controller, phase-locked loop, electrical quantity measurement and coordinate transformation, coordinate inverse transformation and modulation trigger link.

7. The electromagnetic transient standardization modeling method of the permanent magnet direct drive wind turbine according to any one of claims 1-6, wherein, the digital-analog hybrid simulation test software includes any one of RT-LAB and RTDS.

8. The electromagnetic transient standardization modeling method of the permanent magnet direct drive wind turbine according to any one of claims 1-6, wherein, the electromagnetic transient simulation software includes any one of PSCAD / EMTDC and ADPSS.

9. The electromagnetic transient standardization modeling method of the permanent magnet direct drive wind turbine according to any one of claims 3-6, wherein, the steps of building the analog circuit of the connected AC system according to the primary circuit further include: The ideal voltage source is connected in series with the equivalent impedance, and the equivalent impedance is adjustable.

10. The electromagnetic transient standardization modeling method of the permanent magnet direct drive wind turbine according to any one of claims 9, wherein, the steps of building the analog circuit of the connected AC system according to the primary circuit further include: The adjustment range of the equivalent impedance is based on the short circuit ratio Xk = 2-10.

11. An electromagnetic transient standardization modeling device for a permanent magnet direct drive wind turbine, wherein, it includes a simulation test environment building module, a response characteristic test module, an electromagnetic transient building module and a standardization modeling module: among them, The simulation test environment building module is used to obtain the modeling data of the permanent magnet direct drive wind turbine that needs to be standardized. The modeling data at least includes the primary circuit topology of the permanent magnet direct drive wind turbine, the rated parameters of the generator, the back-to-back converter and the AC filter components. And build the primary circuit of the permanent magnet direct drive wind turbine in the digital-analog hybrid simulation test software, build the analog circuit of the connected AC system according to the primary circuit, and connect with the controller of the permanent magnet direct drive wind turbine through the physical interface box of the digital-analog hybrid simulation test software to build the digital-analog hybrid simulation test environment of the permanent magnet direct drive wind turbine; The response characteristic test module is used to test the response characteristics of the permanent magnet direct drive wind turbine under different voltage dip conditions or voltage rise conditions according to the digital-analog hybrid simulation test environment, and obtain response characteristic parameters; An electromagnetic transient building module, configured to build the primary circuit of the permanent magnet direct drive wind turbine and a standard structured controller in an electromagnetic transient simulation software; A standardization modeling module, configured to identify the control parameters of the high and low voltage ride-through control links of the standard structured controller of the permanent magnet direct drive wind turbine by using the least square method fitting according to the terminal voltage V, active power P and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions, so as to complete the standardization modeling of the electromagnetic transient model.

12. An electromagnetic transient standardization modeling device for a permanent magnet direct drive wind turbine according to claim 11, characterized in that the simulation test environment building module is further configured to: build the primary circuit of the permanent magnet direct drive wind turbine in a digital-analog hybrid simulation test software according to the primary circuit topology of the permanent magnet direct drive wind turbine, and the primary circuit at least includes a generator, a back-to-back converter and an AC filter.

13. An electromagnetic transient standardization modeling device for a permanent magnet direct drive wind turbine according to claim 11, characterized in that the analog circuit at least includes an ideal voltage source and an equivalent impedance.

14. An electromagnetic transient standardization modeling device for a permanent magnet direct drive wind turbine according to claim 11, characterized in that the response characteristic parameters at least include the terminal voltage V, active power P and reactive power Q of the permanent magnet direct drive wind turbine under different voltage sag conditions or voltage rise conditions.

15. A computer device, comprising a memory and a processor, the memory stores a computer program, characterized in that when the processor executes the computer program, the steps of the method according to any one of claims 1-10 are implemented.

16. A computer-readable storage medium, characterized in that a computer program is stored thereon; the computer program is executed by a processor to implement the method according to any one of claims 1-10.

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