Method, system and equipment for controlling virtual power angle of network-following type converter and medium

Abstract

The invention belongs to the technical field of network-following type converter control, and discloses a network-following type converter virtual power angle control method, system and device and a medium. The method comprises the following steps: acquiring alternating current port instantaneous data of the following network type converter, and performing calculation based on the alternating current port instantaneous data to obtain a phase-locked loop active regulation and control variable; through abc / dq conversion and PI control, a trigger pulse of the grid-following type converter is finally generated so as to realize virtual power angle control. By effectively designing the control parameters of the phase-locked loop, the output of the phase-locked loop can be associated with the active and reactive deviations, so that the active-frequency and reactive-voltage active regulation and control functions of the grid-following converter based on virtual power angle control are realized, the method is suitable for all types of grid-following converters, the application range is wide, and the implementation is easy. An existing general control frame structure does not need to be changed, application cost is low, and stability and economical efficiency are both considered.

Description

Technical Field

[0001] The present invention belongs to the technical field of grid-following converter control, and in particular relates to a grid-following converter virtual power angle control method, system, equipment and medium. Background Art

[0002] As the proportion of wind power, solar power and other renewable energy power generation systems connected to the power grid continues to rise, the high penetration rate of these renewable energy power generation systems poses a severe challenge to the stability of the power grid. The inherent volatility of renewable energy power generation systems undoubtedly exacerbates the risk of power grid stability. In this context, the importance of converters as key components for power grid stability is becoming increasingly prominent.

[0003] At present, the AC ports of converters that interact with the power grid in commercial equipment of renewable energy power generation systems generally adopt a grid-following control strategy based on a phase-locked loop (PLL). Such converters are collectively referred to as grid-following converters. However, with the widespread application of grid-following converters in power grids, the inertia, active power, and reactive power characteristics of the power grid have changed significantly, among which the stability of the grid frequency and voltage is particularly prominent. In order to meet this challenge, grid-building converters came into being and have received widespread attention. Compared with grid-building converters, a notable feature of grid-building converters is that they can simulate two key functions of synchronous generators: one is the generation of internal electromotive force, and the other is the simulation of active swing equations and reactive excitation equations. Figure 1 For the existing network-based control framework, Figure 2 The existing grid-type control framework. Although the grid-type converter can solve the problem of the converter's active regulation of grid voltage-reactive power and frequency-active power to a certain extent, the application of the grid-type converter is not easy. Figure 1 and Figure 2 It can be seen that since conventional grid-type converters do not contain PLL (Phase-Locked-Loop), their control architecture is essentially different from that of grid-following converters. If the grid-type converters provided by existing technologies are directly applied to achieve active regulation of the power grid, the control structure of existing commercial equipment will need to be changed and the control structure of existing commercial equipment will have to be reconstructed, which will undoubtedly bring high economic costs.

[0004] In summary, the existing converter control technology cannot take into account both stability and economy and has obvious shortcomings. Summary of the invention

[0005] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the objects of the present invention is to solve at least one or more of the above-mentioned problems in the prior art. In other words, one of the objects of the present invention is to provide a virtual power angle control method, system, equipment and medium for a grid-following converter that meets one or more of the above-mentioned needs, so as to be more suitable for existing commercial converter equipment, reduce economic costs, and at the same time realize the converter's active-frequency and reactive-voltage stable control of the power grid, so as to effectively solve the problem of integrating the converter's active support with the grid-following framework.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a virtual power angle control method for a grid-following converter, comprising the steps of: S1, obtaining instantaneous data of an AC port of the grid-following converter, wherein the instantaneous data of the AC port includes a voltage measurement instantaneous value v m g , Active power measurement instantaneous value P m , reactive power measurement instantaneous value Q m and the instantaneous value of current measurement i m g S2, based on the instantaneous data of the AC port, calculate to obtain the phase-locked loop active control variable, the phase-locked loop active control variable includes active power-frequency active control variable and reactive-voltage active control variables ; S3, measuring the instantaneous value v of the voltage m g Active control of reactive power and voltage variables Perform abc / dq transformation to obtain the corresponding dq value, and obtain the inner loop control current value through PI control and ; S4, measure the instantaneous value of current i m g Perform abc / dq transformation to obtain the corresponding dq value, combined with the inner loop control current value and , the control output value of the three-phase voltage is obtained through PI control , in order to generate trigger pulses for the grid-following converter and realize virtual power angle control.

[0007] As a preferred solution, the step S2 of calculating based on the instantaneous data of the AC port to obtain the active control variable of the phase-locked loop includes the steps of measuring the instantaneous value v of the voltage m g Transform the complex form to obtain its imaginary part im(v m g ); Based on the imaginary part im(v m g) Calculate the virtual active power deviation to obtain the virtual active power deviation result; Obtain the proportionality coefficient K P And based on the virtual active power deviation result, a proportional calculation is performed to obtain the active power-frequency active control variable .

[0008] As a preferred solution, the step S2 of calculating based on the instantaneous data of the AC port to obtain the active control variable of the phase-locked loop further includes the step of: calculating based on the imaginary part im(v m g ) Calculate the virtual reactive power deviation to obtain the virtual reactive power deviation result; Obtain the proportionality coefficient K Q And based on the virtual reactive power deviation result, a proportional calculation is performed to obtain the reactive power-voltage active control variable .

[0009] As a preferred solution, the formula for calculating the virtual active power deviation is: , where The instantaneous value of the voltage measured is v m g The real part is the filter coefficient of the virtual active power deviation calculation link, i q ref It is the q-axis current component generated by the target reactive power.

[0010] As a preferred solution, the formula for calculating the virtual reactive power deviation is: , where The instantaneous value of the voltage measured is v m g Real part, is the filter coefficient of the virtual reactive deviation calculation link, i d ref is the d-axis current component generated by the target active power.

[0011] As a preferred solution, the active power-frequency active control variable The expression is: , where im(v m g )and The voltage measured instantaneous value v is m g The imaginary and real parts, i d ref is the d-axis current component generated by the target active power, K Q is the proportionality coefficient, It is the filter coefficient of the virtual active power deviation calculation link.

[0012] As a preferred solution, the reactive power-voltage active control variable The expression is: , where im(v m g )and The voltage measured instantaneous value v is m g The imaginary and real parts, i q ref is the q-axis current component generated by the target reactive power, K P is the proportionality coefficient, It is the filter coefficient of the virtual reactive power deviation calculation link.

[0013] In a second aspect, the present invention provides a virtual power angle control system for a grid-following converter, which is used to implement the virtual power angle control method for a grid-following converter as described in the first aspect.

[0014] In a third aspect, the present invention provides an electronic device, wherein the computer device comprises a memory, a processor and a computer program, and when the computer program is executed by the processor, the virtual power angle control method of the grid-following converter as described in the first aspect is implemented.

[0015] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the virtual power angle control method of a grid-following converter as described in the first aspect is implemented.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Through effective design of the control parameters of the phase-locked loop, the output of the phase-locked loop can be linked to the deviation of active and reactive power, thereby realizing the active control function of active-frequency and reactive-voltage of the grid-following converter based on virtual power angle control. It is suitable for all types of grid-following converters, has a wide range of applications, does not require changing the existing general control framework structure, has a low application cost, and takes into account both stability and economy.

[0017] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is an existing network-based control framework.

[0020] Figure 2 It is an existing network-based control framework.

[0021] Figure 3 It is a schematic diagram of the principle of the virtual power angle control method of the grid-following converter described in an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the calculation principle of the d-axis and q-axis current components generated by the target active power according to the embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the phase-locked loop described in an embodiment of the present invention.

[0024] Figure 6 is a structural diagram of the electronic device provided in an embodiment of the present invention.

[0025] Figure Number: 600. Electronic equipment; 601, processor; 602, communication bus; 603, user interface; 604, network interface; 605, memory. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In the following description, multiple embodiments of the present invention are provided, and different embodiments may be replaced or combined, so the present invention may also be considered to include all possible combinations of the same and / or different embodiments described. Therefore, if one embodiment includes features A, B, and C, and another embodiment includes features B and D, then the present invention should also be considered to include embodiments containing one or more of A, B, C, and D, all other possible combinations, even though the embodiment may not be clearly described in the following text.

[0028] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements described without departing from the scope of the present invention. Various processes or components may be appropriately omitted, substituted or added to each example. For example, the described method may be performed in an order different from the described order, and various steps may be added, omitted or combined. In addition, the features described in some examples may be combined in other examples.

[0029] In order to facilitate a better understanding of the embodiments of the present invention, before explaining the specific implementation modes of the present invention in detail, its application scenarios are first described.

[0030] The virtual power angle control method of the grid-following converter described in the embodiments of this specification is applied to the active regulation process of the power grid. In these scenarios, the implementation of the virtual power angle control method of the grid-following converter is mainly aimed at achieving the stability and reliability of the power grid. By precisely controlling the virtual power angle of the converter, the power flow of the power grid can be effectively adjusted, thereby ensuring the stable operation of the power grid under various operating conditions. The application of this method aims to provide a reliable performance guarantee to ensure that the power grid can remain stable in the face of load fluctuations, fault recovery and other various operational challenges, reduce the occurrence of power outages, and improve the operating efficiency and reliability of the entire power system.

[0031] The following is a brief explanation of the phase-locked loop, the AC port of the converter, and the phase-locked loop active control variables involved in multiple embodiments of this specification: A phase-locked loop is a closed-loop feedback control system used to achieve phase synchronization between two signals. It mainly consists of a phase detector, a loop filter, a voltage-controlled oscillator (VCO), and sometimes a frequency divider. The working principle of a phase-locked loop is that the phase detector compares the phase difference between the input reference signal and the output signal of the voltage-controlled oscillator, and then generates an error signal. This error signal is processed by the loop filter and used to adjust the frequency of the voltage-controlled oscillator so that the phase of the output signal gradually synchronizes with the phase of the input reference signal.

[0032] The AC port of a converter refers to the interface on the converter that connects to the power grid or other AC equipment. These ports are usually used to transmit AC power, including voltage and current. In power electronics systems, converters are usually used to convert DC power to AC power, or convert one form of AC power to another form of AC power. The design of the converter's AC port needs to consider factors such as voltage level, current capacity, frequency characteristics, and electrical isolation to ensure safe, reliable, and efficient power transmission.

[0033] The active control variables of the phase-locked loop refer to the variables used to adjust the phase and frequency of the output signal of the voltage-controlled oscillator in the phase-locked loop control system. These variables are usually obtained by processing the error signal generated by the phase detector through the loop filter. During the operation of the phase-locked loop, the active control variables are dynamically adjusted according to the phase difference between the input reference signal and the output signal of the voltage-controlled oscillator to achieve phase synchronization between the two signals. The specific form of the active control variables of the phase-locked loop may include voltage control signals, frequency control signals, or phase control signals, depending on the design and application scenarios of the phase-locked loop. By precisely controlling these active control variables, the phase-locked loop can achieve high-precision phase synchronization and frequency tracking functions.

[0034] Embodiment 1: like Figure 3 As shown, this embodiment provides a virtual power angle control method for a grid-following converter, comprising the steps of: S1, obtaining instantaneous data of an AC port of the grid-following converter, wherein the instantaneous data of the AC port includes a voltage measurement instantaneous value v m g , Active power measurement instantaneous value P m , reactive power measurement instantaneous value Q m and the instantaneous value of current measurement i m g S2, based on the instantaneous data of the AC port, calculate to obtain the phase-locked loop active control variable, the phase-locked loop active control variable includes active power-frequency active control variable and reactive-voltage active control variables ; S3, measuring the instantaneous value v of the voltage m g Active control of reactive power and voltage variables Perform abc / dq transformation to obtain the corresponding dq value, and obtain the inner loop control current value through PI control and ; S4, measure the instantaneous value of current i m g Perform abc / dq transformation to obtain the corresponding dq value, combined with the inner loop control current value and , the control output value of the three-phase voltage is obtained through PI control , in order to generate trigger pulses for the grid-following converter and realize virtual power angle control.

[0035] Specifically, this embodiment provides a preferred implementation method, in step S2, the calculation based on the instantaneous data of the AC port is performed to obtain the active control variable of the phase-locked loop, including the steps of measuring the instantaneous value v of the voltage m g Transform the complex form to obtain its imaginary part im(v m g ); Based on the imaginary part im(v m g ) Calculate the virtual active power deviation to obtain the virtual active power deviation result; Obtain the proportionality coefficient K P And based on the virtual active power deviation result, a proportional calculation is performed to obtain the active power-frequency active control variable .

[0036] Specifically, this embodiment provides a preferred implementation method, wherein the step S2 is to calculate based on the instantaneous data of the AC port to obtain the active control variable of the phase-locked loop, and further comprises the steps of: based on the imaginary part im(v m g) Calculate the virtual reactive power deviation to obtain the virtual reactive power deviation result; Obtain the proportionality coefficient K Q And based on the virtual reactive power deviation result, a proportional calculation is performed to obtain the reactive power-voltage active control variable .

[0037] Specifically, this embodiment provides a preferred implementation, and the formula for calculating the virtual active power deviation is: , where The instantaneous value of the voltage measured is v m g Real part, is the filter coefficient of the virtual active power deviation calculation link, i q ref is the q-axis current component generated by the target reactive power. More specifically, i q ref Can be based on Figure 4 The calculation is done according to the principle shown.

[0038] Specifically, this embodiment provides a preferred implementation mode, and the formula for calculating the virtual reactive power deviation is: , where The instantaneous value of the voltage measured is v m g Real part, is the filter coefficient of the virtual reactive deviation calculation link, i d ref is the d-axis current component generated by the target active power. More specifically, i d ref Can be based on Figure 4 The calculation is done according to the principle shown.

[0039] Specifically, this embodiment provides a preferred implementation mode, the active power-frequency active control variable The expression is: , where im(v m g )and The voltage measured instantaneous value v is m g The imaginary and real parts, i d ref is the d-axis current component generated by the target active power, K Q is the proportionality coefficient, It is the filter coefficient of the virtual active power deviation calculation link.

[0040] Specifically, this embodiment provides a preferred implementation method, the reactive power-voltage active control variable The expression is: , where im(vm g )and The voltage measured instantaneous value v is m g The imaginary and real parts, i q ref is the q-axis current component generated by the target reactive power, K P is the proportionality coefficient, It is the filter coefficient of the virtual reactive power deviation calculation link.

[0041] Furthermore, the phase-locked loop described in this embodiment is as follows: Figure 5 As shown, considering the voltage measurement instantaneous value v m g Imaginary part im( v m g ) and the real part re( v m g ) has a right-angle relationship in the complex frequency domain, so in the s domain, there is a relationship Based on this, the expression of the active control variable of the phase-locked loop can be transformed into , while the overall transfer function of active power-frequency in the prior art is By comparing the above two expressions, it can be seen that the virtual power angle control method of the grid-following converter described in this embodiment does not need to change the control architecture of the phase-locked loop, and only needs to optimize the parameter design to achieve stable control. That is, this embodiment is applicable to existing commercial converter equipment and effectively solves the problem of integrating the converter active support with the grid-following framework.

[0042] Embodiment 2: This embodiment provides a virtual power angle control system for a grid-following converter, which is used to implement the virtual power angle control method for the grid-following converter as described in the first embodiment.

[0043] Embodiment three: like Figure 5 As shown, this embodiment provides an electronic device, which may include: at least one processor, at least one network interface, a user interface, a memory, and at least one communication bus.

[0044] The communication bus can be used to realize the connection and communication among the above-mentioned components.

[0045] The user interface may include buttons, and the optional user interface may also include a standard wired interface or a wireless interface.

[0046] The network interface may include but is not limited to a Bluetooth module, an NFC module, a Wi-Fi module, etc.

[0047] Among them, the processor may include one or more processing cores. The processor uses various interfaces and lines to connect the various parts of the entire electronic device, and executes various functions of the electronic device and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory, and calling data stored in the memory. Optionally, the processor can be implemented in at least one hardware form of DSP, FPGA, and PLA. The processor can integrate one or a combination of CPU, GPU, modem, etc. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display; the modem is used to handle wireless communications. It can be understood that the above-mentioned modem may not be integrated into the processor, but may be implemented separately through a chip.

[0048] The memory may include RAM or ROM. Optionally, the memory includes a non-transitory computer-readable medium. The memory may be used to store instructions, programs, codes, code sets or instruction sets. The memory may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area may store data involved in the above-mentioned various method embodiments, etc. The memory may also be at least one storage device located away from the aforementioned processor. The memory as a computer storage medium may include an operating system, a network communication module, a user interface module and a control application. The processor may be used to call the control application stored in the memory and execute the steps of the virtual power angle control method of the grid-following converter mentioned in the above-mentioned embodiment.

[0049] Embodiment 4: This embodiment provides a computer-readable storage medium, which stores instructions. When the computer-readable storage medium is executed on a computer or a processor, the computer or the processor executes the above-mentioned Figure 3 One or more steps in the illustrated embodiment. If the components of the electronic device described above are implemented in the form of software functional units and sold or used as independent products, they can be stored in the computer-readable storage medium.

[0050] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of this specification is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state drive (SSD)).

[0051] A person of ordinary skill in the art can understand that all or part of the processes in the method of the first embodiment can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. The aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes. In the absence of conflict, the technical features in this embodiment and the implementation scheme can be combined arbitrarily.

[0052] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0053] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] The above is only an exemplary embodiment of the present invention and cannot be used to limit the scope of the present invention. That is, any equivalent changes and modifications made according to the teachings of the present invention are still within the scope of the present invention. After considering the specification and practicing the disclosure here, it will be easy for those skilled in the art to think of the implementation scheme of the present invention. The present invention is intended to cover any modification, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art that are not recorded in the present invention. The description and examples are only regarded as exemplary, and the scope and spirit of the present invention are defined by the claims.

Claims

1. A virtual power angle control method for a grid-following converter, characterized in that: Includes steps: S1. Acquire the instantaneous data of the AC port of the grid-following converter, wherein the instantaneous data of the AC port includes the instantaneous value v of the voltage measurement. m g , Active power measurement instantaneous value P m , reactive power measurement instantaneous value Q m and the instantaneous value of current measurement i m g ; S2. Calculate based on the instantaneous data of the AC port to obtain a phase-locked loop active control variable, wherein the phase-locked loop active control variable includes an active power-frequency active control variable. Reactive power-voltage active control variable ; S3, measuring the instantaneous value v of the voltage m g Active control variables of reactive power and voltage Perform abc / dq transformation to obtain the corresponding dq value, and obtain the inner loop control current value through PI control and ; S4, measure the instantaneous value of current i m g Perform abc / dq transformation to obtain the corresponding dq value, combined with the inner loop control current value and , the control output value of the three-phase voltage is obtained through PI control , in order to generate trigger pulses for the grid-following converter and realize virtual power angle control.

2. A virtual power angle control method for a grid-following converter according to claim 1, characterized in that: Step S2, performing calculation based on the instantaneous data of the AC port to obtain the active control variable of the phase-locked loop, comprises the following steps: The instantaneous value v of the voltage is measured m g Transform the complex form to obtain its imaginary part im(v m g ); Based on the imaginary part im(v m g ) performing virtual active power deviation calculation to obtain a virtual active power deviation result; Get the proportionality factor K P And based on the virtual active power deviation result, a proportional calculation is performed to obtain the active power-frequency active control variable .

3. A virtual power angle control method for a grid-following converter according to claim 2, characterized in that: The step S2 of calculating based on the instantaneous data of the AC port to obtain the active control variable of the phase-locked loop also includes the steps of: Based on the imaginary part im(v m g ) performing virtual reactive power deviation calculation to obtain a virtual reactive power deviation result; Get the proportionality factor K Q And based on the virtual reactive power deviation result, a proportional calculation is performed to obtain the reactive power-voltage active control variable .

4. A virtual power angle control method for a grid-following converter according to claim 2, characterized in that: The formula for calculating the virtual active power deviation is: ， In the formula, The instantaneous value of the voltage measured is v m g Real part, is the filter coefficient of the virtual active power deviation calculation link, i q ref It is the q-axis current component generated by the target reactive power.

5. A virtual power angle control method for a grid-following converter according to claim 3, characterized in that: The formula for calculating the virtual reactive power deviation is: ， In the formula, The instantaneous value of the voltage measured is v m g Real part, is the filter coefficient of the virtual reactive deviation calculation link, i d ref is the d-axis current component generated by the target active power.

6. A virtual power angle control method for a grid-following converter according to claim 2, characterized in that: The active power-frequency active control variable The expression is: ， In the formula, im(v m g )and The voltage measured instantaneous value v is m g The imaginary and real parts, i d ref is the d-axis current component generated by the target active power, K Q is the proportionality coefficient, It is the filter coefficient of the virtual active power deviation calculation link.

7. A virtual power angle control method for a grid-following converter according to claim 3, characterized in that: The reactive power-voltage active control variable The expression is: ， In the formula, im(v m g )and The voltage measured instantaneous value v is m g The imaginary and real parts, i q ref is the q-axis current component generated by the target reactive power, K P is the proportionality coefficient, It is the filter coefficient of the virtual reactive power deviation calculation link.

8. A virtual power angle control system for a grid-following converter, characterized in that: Used to implement the virtual power angle control method of the grid-following converter as described in any one of claims 1 to 7.

9. A computer device, comprising a memory, a processor and a computer program, characterized in that: When the computer program is executed by a processor, the virtual power angle control method of a grid-following converter as claimed in any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the virtual power angle control method of a grid-following converter as claimed in any one of claims 1 to 7 is implemented.

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