Network construction control method and device based on adaptive fault ride-through, terminal equipment and storage medium

Abstract

The invention discloses a network construction control method and device based on self-adaptive fault ride-through, terminal equipment and a storage medium, and the method comprises the steps: determining a reactive power-voltage control link state through a voltage effective value of a grid connection point, determining a current transformer fault current reference value according to the voltage effective value when the reactive power-voltage control link state is a locked state, and carrying out the fault current control according to the current transformer fault current reference value. According to the method, network construction type control is still adopted during the fault period, a virtual impedance control link does not need to be used, the internal potential reference value of the converter during the fault period is determined according to the fault voltage of the converter port, and the stability of the power grid is maintained. Therefore, the converter can still present the characteristics of the controlled voltage source during the fault period, the fault current of the converter does not exceed the current resistance level of equipment, the stability of a power grid is maintained, and the problem that the stability of the power grid cannot be maintained on the premise that the impedance characteristic of the converter is not obviously changed in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the field of network-building converters, and in particular to a network-building control method, device, terminal equipment and storage medium based on adaptive fault ride-through. Background Art

[0002] In order to achieve the goal of "carbon peak and carbon neutrality", new energy units such as wind and solar are being connected to the power system on a large scale. Traditional new energy units need to be connected to the power grid through grid-following converters, which lack the ability to actively support frequency and voltage, resulting in an increase in the risk of transient instability of system frequency and voltage. Grid-building converters use their own control links to build internal potential, which can actively support the voltage and frequency of the grid and are increasingly widely used in power systems.

[0003] When the external power grid is disturbed, the grid-forming converter will show the characteristics of a controlled voltage source to the outside, and its internal potential will basically remain constant, causing the converter output current to change sharply. In severe cases, the converter output current may exceed its own current-carrying level, eventually causing damage to the switching device. In order to ensure the safety of the converter, the fault crossing strategy of the grid-forming converter needs to limit the fault current and ensure that the converter still presents the characteristics of a controlled voltage source during the fault. However, the existing technology switches to grid-following control during the fault, which will cause the converter to no longer present the characteristics of a controlled voltage source, and it will not be able to actively support the grid during the fault, and thus it will not be able to ensure that the converter has the ability to form a fault network. However, the virtual impedance control link can be used to limit the fault current and maintain the converter's networking characteristics during the fault. However, this method will significantly change the impedance characteristics of the converter in the medium and low frequency bands, which may cause the converter to have the risk of broadband oscillation.

[0004] Although the existing technology can play the role of fault current limiting, it is necessary to change the impedance characteristics of the converter through a virtual impedance control link. Therefore, the existing technology cannot maintain grid stability without significantly changing the impedance characteristics of the converter. Summary of the invention

[0005] The present invention provides a network control method, device, terminal equipment and storage medium based on adaptive fault crossing, which can solve the problem that although the existing technology can play the role of fault current limiting, it needs to change the impedance characteristics of the converter through a virtual impedance control link, and thus cannot maintain the stability of the power grid without significantly changing the impedance characteristics of the converter.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a network control method based on adaptive fault ride-through, including:

[0007] Obtaining an effective value of a voltage at a grid connection point, and comparing the effective value of the voltage with a first threshold;

[0008] When it is determined that the voltage effective value is less than the first threshold, setting the reactive power-voltage control link state to locked;

[0009] When the reactive power-voltage control link state is set to locked, determining whether the voltage effective value is less than or equal to a second threshold;

[0010] If so, when the voltage effective value is less than or equal to the second threshold, the fault current reference value of the converter is set to the converter current withstand level;

[0011] If not, the fault current reference value of the converter is calculated according to the converter current withstand level and the effective value of the voltage;

[0012] According to the fault current reference value of the converter, the internal potential reference value of the converter is calculated through the fault internal potential adaptive adjustment link, and the internal potential of the converter is adjusted according to the internal potential reference value; wherein the first threshold is greater than the second threshold.

[0013] Furthermore, the calculation formula of the fault current reference value of the converter is:

[0014]

[0015] Among them, the I max Indicates the current carrying capacity of the converter; T Represents the effective value of voltage; the I max ref Indicates the fault current reference value of the converter.

[0016] Furthermore, the calculation of the internal potential reference value of the converter through the fault internal potential adaptive adjustment link includes:

[0017] The internal potential reference value of the converter is calculated according to the fault current reference value of the converter, the virtual resistance, the virtual reactance, the d-axis component of the grid-connected point voltage and the q-axis component of the grid-connected point voltage.

[0018] Furthermore, the calculation formula of the internal potential reference value of the converter is:

[0019]

[0020] Among them, the I max ref represents the fault current reference value of the converter; the R v represents a virtual resistor; the X v represents virtual reactance; the U d Represents the d-axis component of the grid-connected point voltage; q represents the q-axis component of the grid-connected point voltage; ref Indicates the internal potential reference value of the converter.

[0021] Based on the above method embodiment, the present invention provides a corresponding device embodiment;

[0022] An embodiment of the present invention provides a network control device based on adaptive fault ride-through, comprising: a voltage effective value judgment module, a reactive-voltage control link state setting module, a first calculation module and a second calculation module;

[0023] The voltage effective value judgment module is used to obtain the voltage effective value of the grid connection point and compare the voltage effective value with the first threshold value;

[0024] The reactive power-voltage control link state setting module is used to set the reactive power-voltage control link state to locked when it is determined that the voltage effective value is less than the first threshold;

[0025] The first calculation module is used to determine whether the voltage effective value is less than or equal to the second threshold value when the reactive power-voltage control link state is set to locked; if so, when the voltage effective value is less than or equal to the second threshold value, the fault current reference value of the converter is set to the converter current withstand level; if not, the fault current reference value of the converter is calculated according to the converter current withstand level and the voltage effective value;

[0026] The second calculation module is used to calculate the internal potential reference value of the converter according to the fault current reference value of the converter through the fault internal potential adaptive adjustment link, and adjust the internal potential of the converter according to the internal potential reference value; wherein the first threshold is greater than the second threshold.

[0027] Furthermore, the calculation formula of the fault current reference value of the converter is:

[0028]

[0029] Among them, the I max Indicates the current carrying capacity of the converter; T Represents the effective value of voltage; the I max ref Indicates the fault current reference value of the converter.

[0030] Furthermore, the calculation of the internal potential reference value of the converter through the fault internal potential adaptive adjustment link includes:

[0031] The internal potential reference value of the converter is calculated according to the fault current reference value of the converter, the virtual resistance, the virtual reactance, the d-axis component of the grid-connected point voltage and the q-axis component of the grid-connected point voltage.

[0032] Furthermore, the calculation formula of the internal potential reference value of the converter is:

[0033]

[0034] Among them, the I max ref represents the fault current reference value of the converter; the R v represents a virtual resistor; the X v represents virtual reactance; the U d Represents the d-axis component of the grid-connected point voltage; q represents the q-axis component of the grid-connected point voltage; ref Indicates the internal potential reference value of the converter.

[0035] Based on the above-mentioned method item embodiments, the present invention provides a corresponding terminal device item embodiment, including: a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, a network control method based on adaptive fault crossing as described in the present invention is implemented.

[0036] Based on the above-mentioned method item embodiments, the present invention provides a corresponding computer-readable storage medium item embodiment, including: a stored computer program, when the computer program is running, controlling the device where the computer-readable storage medium is located to execute a networking control method based on adaptive fault crossing as described in the present invention.

[0037] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0038] The present invention determines the state result of the power grid system through the effective value of the voltage at the grid connection point. When the state result of the power grid system is a fault, the state of the reactive-voltage control link is set to be locked, and the fault current reference value of the converter is determined according to the effective value of the voltage. Finally, according to the fault current reference value of the converter, the internal potential reference value of the converter is calculated through the fault internal potential adaptive adjustment link, so as to adjust the internal potential of the converter, thereby maintaining the stability of the power grid. That is, during the fault period, the present invention does not need to switch to the grid-following control, and still adopts the grid-forming control. There is no need to use the virtual impedance control link. The internal potential reference value of the converter during the fault period is determined according to the fault voltage of the converter port, so that the converter can still present the controlled voltage source characteristics during the fault period, and the internal potential of the converter is adjusted according to the internal potential reference value to ensure that the fault current of the converter does not exceed the current carrying capacity of the equipment, thereby maintaining the stability of the power grid. This solves the problem that although the prior art can play the role of fault current limiting, it needs to change the impedance characteristics of the converter through the virtual impedance control link, and thus cannot maintain the stability of the power grid without significantly changing the impedance characteristics of the converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1: A flowchart of a method for controlling networking based on adaptive fault ride-through provided by an embodiment of the present invention;

[0040] Figure 2 : A structural diagram of a networking control device based on adaptive fault crossing provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0043] Embodiment 1:

[0044] Reference Figure 1 , is a flowchart of a method for controlling networking based on adaptive fault ride-through provided by an embodiment of the present invention, the method comprising at least the following steps:

[0045] Step S1, obtaining the effective value of the voltage at the grid connection point, and comparing the effective value of the voltage with a first threshold;

[0046] In this embodiment, when the effective value of the voltage is less than a first threshold, a fault occurs in the power system; the first threshold is set to 0.9.

[0047] Step S2: when it is determined that the voltage effective value is less than the first threshold value, setting the reactive power-voltage control link state to locked;

[0048] In this embodiment, when it is determined that the voltage effective value is less than the first threshold, that is, when a fault occurs in the power system, the reactive power-voltage control link state of the converter is set to a locked state.

[0049] In this embodiment, when it is determined that the effective value of the voltage is greater than or equal to the first threshold, that is, when no fault occurs in the power system, the reactive power-voltage control link state of the converter is set to a non-locked state, and the internal potential reference value of the converter is calculated through the reactive power-voltage control link, and the internal potential of the converter is adjusted according to the internal potential reference value of the converter.

[0050] Step S3: when the reactive power-voltage control link state is set to locked, determine whether the voltage effective value is less than or equal to a second threshold;

[0051] In this embodiment, the second threshold is set to 0.5.

[0052] Step S301: If yes, when the voltage effective value is less than or equal to the second threshold, the fault current reference value of the converter is set to the converter current withstand level;

[0053] In this embodiment, when the effective value of the voltage is less than or equal to 0.5, the fault current reference value of the converter is set to the converter current withstand level; the converter current withstand level is the maximum current withstand level of the converter. max .

[0054] Step S302: If not, calculate the fault current reference value of the converter according to the converter current withstand level and the voltage effective value;

[0055] In this embodiment, according to the current withstand level of the converter and the effective value of the voltage, the fault current reference value of the converter is calculated by the following calculation formula.

[0056] In this embodiment, the calculation formula of the fault current reference value of the converter is:

[0057]

[0058] Among them, the I max , indicating the current carrying capacity of the converter; the U T Represents the effective value of voltage; the I max ref Indicates the fault current reference value of the converter.

[0059] Step S4, according to the fault current reference value of the converter, calculate the internal potential reference value of the converter through the fault internal potential adaptive adjustment link, and adjust the internal potential of the converter according to the internal potential reference value; wherein the first threshold is greater than the second threshold.

[0060] In this embodiment, the internal potential reference value of the converter is calculated according to the fault current reference value of the converter, the virtual resistance, the virtual reactance, the d-axis component of the grid connection point voltage, and the q-axis component of the grid connection point voltage.

[0061] In this embodiment, according to the dq-axis component of the internal potential of the grid-connected converter and the dq-axis component of the voltage and current at the grid-connected point, the relationship expression between the internal potential of the grid-connected converter and the voltage and current at the grid-connected point is constructed as follows: Among them, the E d 、E q are the d-axis and q-axis components of the potential in the grid converter respectively; d, U q are the d-axis and q-axis components of the grid-connected point voltage respectively; the I d ,I q are the d-axis and q-axis components of the grid-connected point current respectively; v , X v are virtual resistance and virtual reactance respectively.

[0062] In this embodiment, the d-axis of the internal potential of the grid-forming converter is set to the internal potential reference value of the converter, and the q-axis component of the internal potential of the grid-forming converter is set to 0, that is, E d =E ref , E q =0.

[0063] In this embodiment, E d =E ref , E q =0 is substituted into the relationship expression between the potential inside the grid converter and the voltage and current at the grid connection point, and we can get U q 2 +(E ref -U d ) 2 =(R v 2 +X v 2 )·(I d 2 +I q 2 ); wherein said I d 2 +I q 2 is the fault current reference value of the converter; by transforming the above formula, the calculation formula of the internal potential reference value of the converter can be obtained.

[0064] In this embodiment, the calculation formula of the internal potential reference value of the converter is:

[0065]

[0066] Among them, the I max ref represents the fault current reference value of the converter; the R v represents a virtual resistor; the X v represents virtual reactance; the U d Represents the d-axis component of the grid-connected point voltage; q represents the q-axis component of the grid-connected point voltage; ref Indicates the internal potential reference value of the converter.

[0067] Embodiment 2:

[0068] Reference Figure 2 , is a structural diagram of a network control device based on adaptive fault ride-through provided by an embodiment of the present invention, the device comprising: a voltage effective value judgment module, a reactive-voltage control link state setting module, a first calculation module and a second calculation module;

[0069] The voltage effective value judgment module is used to obtain the voltage effective value of the grid connection point and compare the voltage effective value with the first threshold value;

[0070] The reactive power-voltage control link state setting module is used to set the reactive power-voltage control link state to locked when it is determined that the voltage effective value is less than the first threshold;

[0071] The first calculation module is used to determine whether the voltage effective value is less than or equal to the second threshold value when the reactive power-voltage control link state is set to locked; if so, when the voltage effective value is less than or equal to the second threshold value, the fault current reference value of the converter is set to the converter current withstand level; if not, the fault current reference value of the converter is calculated according to the converter current withstand level and the voltage effective value;

[0072] The second calculation module is used to calculate the internal potential reference value of the converter according to the fault current reference value of the converter through the fault internal potential adaptive adjustment link, and adjust the internal potential of the converter according to the internal potential reference value; wherein the first threshold is greater than the second threshold.

[0073] In this embodiment, the system also includes: a third calculation module; the third calculation module is used to set the reactive power-voltage control link state of the converter to a non-locked state when it is determined that the effective value of the voltage is greater than or equal to the first threshold, that is, when no fault occurs in the power system, and calculate the internal potential reference value of the converter through the reactive power-voltage control link, and adjust the internal potential of the converter according to the internal potential reference value of the converter.

[0074] In this embodiment, the calculation formula of the fault current reference value of the converter is:

[0075]

[0076] Among them, the I max Indicates the current carrying capacity of the converter; T Represents the effective value of voltage; the I max ref Indicates the fault current reference value of the converter.

[0077] In this embodiment, the calculation of the internal potential reference value of the converter through the fault internal potential adaptive adjustment link includes:

[0078] The internal potential reference value of the converter is calculated according to the fault current reference value of the converter, the virtual resistance, the virtual reactance, the d-axis component of the grid-connected point voltage and the q-axis component of the grid-connected point voltage.

[0079] In this embodiment, according to the dq-axis component of the internal potential of the grid-connected converter and the dq-axis component of the voltage and current at the grid-connected point, the relationship expression between the internal potential of the grid-connected converter and the voltage and current at the grid-connected point is constructed as follows: Among them, the E d 、E q are the d-axis and q-axis components of the potential in the grid converter respectively; d , U q are the d-axis and q-axis components of the grid-connected point voltage respectively; the I d ,I q are the d-axis and q-axis components of the grid-connected point current respectively; v , X v are virtual resistance and virtual reactance respectively.

[0080] In this embodiment, the d-axis of the internal potential of the grid-forming converter is set to the internal potential reference value of the converter, and the q-axis component of the internal potential of the grid-forming converter is set to 0, that is, E d =E ref , E q =0.

[0081] In this embodiment, E d =E ref , E q =0 is substituted into the relationship expression between the potential inside the grid converter and the voltage and current at the grid connection point, and we can get U q 2 +(E ref -U d ) 2 =(R v 2 +X v 2 )·(I d 2 +I q 2 ); wherein said I d 2 +I q 2 is the fault current reference value of the converter; by transforming the above formula, the calculation formula of the internal potential reference value of the converter can be obtained.

[0082] In this embodiment, the calculation formula of the internal potential reference value of the converter is:

[0083]

[0084] Among them, the I max ref represents the fault current reference value of the converter; the R v represents a virtual resistor; the X v represents virtual reactance; the U d Represents the d-axis component of the grid-connected point voltage; q represents the q-axis component of the grid-connected point voltage; ref Indicates the internal potential reference value of the converter.

[0085] The decoder is used to calculate the image pixel values ​​of the first infrared image for the feature map of the enhanced first infrared image output by the encoder, and convert the image pixel values ​​into image pixels of the denoised infrared image.

[0086] Based on the above method embodiment, another embodiment is provided;

[0087] Another embodiment of the present invention provides a networking control terminal device based on adaptive fault traversal, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, and when the processor executes the computer program, it implements a networking control method based on adaptive fault traversal as described in any one of the above method embodiments of the present invention.

[0088] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program in the networking control terminal device based on adaptive fault traversal.

[0089] The networking control terminal device based on adaptive fault traversal can be a computing device such as a desktop computer, a notebook, a PDA, and a cloud server. The networking control terminal device based on adaptive fault traversal can include, but is not limited to, a processor and a memory. Those skilled in the art can understand that, for example, the networking control terminal device based on adaptive fault traversal can also include input and output devices, network access devices, buses, etc.

[0090] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the networking control terminal device based on adaptive fault traversal, and uses various interfaces and lines to connect the various parts of the entire networking control terminal device based on adaptive fault traversal.

[0091] The memory can be used to store the computer program and / or module, and the processor realizes various functions of the networking control terminal device based on adaptive fault traversal by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0092] Based on the above method embodiment, another embodiment is provided;

[0093] A storage medium provided by another embodiment of the present invention includes a stored computer program, wherein when the computer program is running, the device where the storage medium is located is controlled to execute a networking control method based on adaptive fault crossing as described in any one of the above method embodiments of the present invention.

[0094] Wherein, the above-mentioned storage medium is a computer-readable storage medium. The module / unit integrated by the network control recommendation device / terminal device based on adaptive fault traversal can be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as an independent product. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method embodiments can be implemented. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0095] It should be noted that the above-mentioned terminal device may include, but is not limited to, a processor and a memory. Those skilled in the art will understand that the above-mentioned terminal device is merely an example and does not constitute a limitation on the terminal device. It may include more or fewer components, or a combination of certain components, or different components.

[0096] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A network control method based on adaptive fault ride-through, characterized in that: include: Obtaining an effective value of a voltage at a grid connection point, and comparing the effective value of the voltage with a first threshold; When it is determined that the voltage effective value is less than the first threshold, setting the reactive power-voltage control link state to locked; When the reactive power-voltage control link state is set to locked, determining whether the voltage effective value is less than or equal to a second threshold; If so, when the voltage effective value is less than or equal to the second threshold, the fault current reference value of the converter is set to the converter current withstand level; If not, the fault current reference value of the converter is calculated according to the converter current withstand level and the effective value of the voltage; According to the fault current reference value of the converter, the internal potential reference value of the converter is calculated through the fault internal potential adaptive adjustment link, and the internal potential of the converter is adjusted according to the internal potential reference value; wherein the first threshold is greater than the second threshold.

2. A method for controlling networking based on adaptive fault ride-through according to claim 1, characterized in that: The calculation formula of the fault current reference value of the converter is: Among them, the I max Indicates the current carrying capacity of the converter; T Represents the effective value of voltage; the I max ref Indicates the fault current reference value of the converter.

3. A method for controlling networking based on adaptive fault ride-through according to claim 1, characterized in that: The method of calculating the internal potential reference value of the converter through the fault internal potential adaptive adjustment link includes: The internal potential reference value of the converter is calculated according to the fault current reference value of the converter, the virtual resistance, the virtual reactance, the d-axis component of the grid-connected point voltage and the q-axis component of the grid-connected point voltage.

4. A method for controlling networking based on adaptive fault ride-through according to claim 3, characterized in that: The calculation formula of the internal potential reference value of the converter is: Among them, the I max ref represents the fault current reference value of the converter; the R v represents a virtual resistor; the X v represents virtual reactance; the U d Represents the d-axis component of the grid-connected point voltage; q represents the q-axis component of the grid-connected point voltage; ref Indicates the internal potential reference value of the converter.

5. A network control device based on adaptive fault ride-through, characterized in that: include: A voltage effective value judgment module, a reactive power-voltage control link state setting module, a first calculation module and a second calculation module; The voltage effective value judgment module is used to obtain the voltage effective value of the grid connection point and compare the voltage effective value with the first threshold; The reactive power-voltage control link state setting module is used to set the reactive power-voltage control link state to locked when it is determined that the voltage effective value is less than the first threshold; The first calculation module is used to determine whether the voltage effective value is less than or equal to the second threshold value when the reactive power-voltage control link state is set to locked; if so, when the voltage effective value is less than or equal to the second threshold value, the fault current reference value of the converter is set to the converter current withstand level; if not, the fault current reference value of the converter is calculated according to the converter current withstand level and the voltage effective value; The second calculation module is used to calculate the internal potential reference value of the converter according to the fault current reference value of the converter through the fault internal potential adaptive adjustment link, and adjust the internal potential of the converter according to the internal potential reference value; wherein the first threshold is greater than the second threshold.

6. A network control device based on adaptive fault ride-through according to claim 5, characterized in that: The calculation formula of the fault current reference value of the converter is: Among them, the I max Indicates the current carrying capacity of the converter; T Represents the effective value of voltage; the I max ref Indicates the fault current reference value of the converter.

7. A network control device based on adaptive fault ride-through according to claim 5, characterized in that: The method of calculating the internal potential reference value of the converter through the fault internal potential adaptive adjustment link includes: The internal potential reference value of the converter is calculated according to the fault current reference value of the converter, the virtual resistance, the virtual reactance, the d-axis component of the grid-connected point voltage and the q-axis component of the grid-connected point voltage.

8. A network control device based on adaptive fault ride-through according to claim 7, characterized in that: The calculation formula of the internal potential reference value of the converter is: Among them, the I max ref represents the fault current reference value of the converter; the R v represents a virtual resistor; the X v represents virtual reactance; the U d Represents the d-axis component of the grid-connected point voltage; q represents the q-axis component of the grid-connected point voltage; ref Indicates the internal potential reference value of the converter.

9. A networking control terminal device based on adaptive fault traversal, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements a networking control method based on adaptive fault traversal as described in any one of claims 1 to 4.

10. A storage medium, characterized in that: The storage medium includes a stored computer program, wherein when the computer program is executed, the device where the storage medium is located is controlled to execute a networking control method based on adaptive fault crossing as described in any one of claims 1 to 4.

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