Resonance suppression method, device and storage medium for reactive generator

Abstract

The present invention relates to the field of power system control, and discloses a resonance suppression method, device and storage medium for a reactive generator. The method comprises: detecting load current data in real time; calling a proportional resonance control algorithm, and calculating reactive components and harmonic components according to the load current data; calling an inverter current to compensate the load current according to the reactive components and harmonic components, and detecting inverter current data and grid voltage data; calling a high-pass filter, performing filtering operations on the inverter current data and grid voltage data, and obtaining high-frequency harmonic components; calculating quasi-PR proportional resonance controller parameters corresponding to the high-frequency harmonic components, and calculating the specified frequency harmonics corresponding to the high-frequency harmonic components; adjusting the specified frequency harmonics according to the quasi-PR proportional resonance controller parameters to perform harmonic suppression. In an embodiment of the present invention, the reactive generator has higher stability when performing harmonic suppression.

Description

Technical Field

[0001] The present invention relates to the field of power system control, and in particular to a resonance suppression method, device and storage medium for a reactive generator. Background Art

[0002] Static VAR generators (SVG) are mainly used for reactive power compensation in power grids to achieve a power factor close to 1. The switching frequency of the compensator needs to be attenuated by a filter to avoid polluting the power grid. Although traditional single-inductor filters are stable, they have disadvantages such as high cost and large size. Therefore, LCL filters are low-cost and small in size and have become the mainstream solution in the industry.

[0003] The LCL filter has a resonance peak at high attenuation at medium and high frequencies. The resonance peak is usually avoided during design, but the impedance change of the power grid will cause the system frequency to approach the resonance frequency, thus causing resonance. It can be seen that the resonance suppression method of the reactive generator has low stability, and a new technology is needed to solve the current problem. Summary of the invention

[0004] The main purpose of the present invention is to solve the technical problem of low stability of the resonance suppression method of the reactive generator.

[0005] A first aspect of the present invention provides a method for suppressing resonance of a reactive power generator, the method comprising:

[0006] Real-time detection of load current data;

[0007] Calling a proportional resonance control algorithm to calculate reactive components and harmonic components according to the load current data;

[0008] According to the reactive component and the harmonic component, calling the inverter current to compensate the load current, and detecting the inverter current data and the grid voltage data;

[0009] Invoking a high-pass filter to perform filtering operations on the inverter current data and the grid voltage data to obtain high-frequency harmonic components;

[0010] Calculating the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component, and calculating the specified frequency harmonic corresponding to the high-frequency harmonic component;

[0011] The specified frequency harmonic is adjusted according to the quasi-PR proportional resonant controller parameters to perform harmonic suppression.

[0012] Optionally, in a first implementation of the first aspect of the present invention, the step of calculating the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component includes:

[0013] Analyzing the target frequency corresponding to the high-frequency harmonic component;

[0014] According to the target frequency, the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component are calculated.

[0015] Optionally, in a second implementation of the first aspect of the present invention, the step of calculating, according to the target frequency, a quasi-PR proportional resonant controller parameter corresponding to the high-frequency harmonic component includes:

[0016] Define the quasi-PR proportional resonant controller transfer function , where s is the complex variable of the Laplace transform, 0 is the resonant frequency, K R is the resonance coefficient, K p is the proportionality coefficient, ω c is the cut-off frequency:

[0017] ;

[0018] The quasi-PR proportional resonant controller transfer function generates quasi-PR proportional resonant controller parameters in response to the target frequency.

[0019] Optionally, in a third implementation of the first aspect of the present invention, the step of invoking a proportional resonance control algorithm to calculate a reactive component and a harmonic component according to the load current data includes:

[0020] Filtering the load current data to obtain filtered current data;

[0021] Calculating fundamental wave components and harmonic wave components from the filtered current data;

[0022] A proportional resonance control algorithm is called to calculate the reactive component using the fundamental wave component and the harmonic component.

[0023] Optionally, in a fourth implementation manner of the first aspect of the present invention, the step of calling a high-pass filter to perform a filtering operation on the inverter current data and the grid voltage data to obtain a high-frequency harmonic component includes:

[0024] Design a high-pass filter according to a preset formula;

[0025] Calling the high-pass filter to perform a filtering operation on the inverter current data to obtain a high-frequency harmonic current component;

[0026] Calling the high-pass filter to perform filtering operation on the grid voltage data to obtain high-frequency harmonic voltage components;

[0027] Performing a phase angle compensation operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component;

[0028] The target high-frequency harmonic current component and the target high-frequency harmonic voltage component are used as high-frequency harmonic components.

[0029] Optionally, in a fifth implementation of the first aspect of the present invention, the step of performing a phase angle compensation operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component includes:

[0030] Performing a phase comparison operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a phase difference;

[0031] Calculating a compensation angle corresponding to the phase difference according to a preset phase angle;

[0032] A phase angle compensation operation is performed according to the implementation compensation angle to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component.

[0033] Optionally, in a sixth implementation manner of the first aspect of the present invention, the step of designing a high-pass filter according to a preset formula includes:

[0034] Define the second-order high-pass filter transfer function , where s is the complex variable of the Laplace transform, is the natural frequency, is the damping ratio:

[0035] ;

[0036] Substituting a preset specified value into the second-order high-pass filter transfer function to obtain a filter parameter;

[0037] According to the filter parameters, a filter generation operation is performed to obtain a high-pass filter.

[0038] Optionally, in a seventh implementation manner of the first aspect of the present invention, after the step of adjusting the specified frequency harmonic according to the quasi-PR proportional resonant controller parameters to perform harmonic suppression, the method further includes:

[0039] According to the inverter current data and the grid voltage data, a matching operation is performed in a virtual impedance database to obtain a target virtual impedance;

[0040] The target virtual impedance is integrated into a control algorithm of the power grid to update control parameters of the power grid.

[0041] A second aspect of the present invention provides a resonance suppression device for a reactive generator, comprising: a memory and at least one processor, wherein instructions are stored in the memory, and the memory and the at least one processor are interconnected via lines; the at least one processor calls the instructions in the memory so that the resonance suppression device for the reactive generator executes the above-mentioned resonance suppression method for the reactive generator.

[0042] A third aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned method for suppressing resonance of a reactive generator.

[0043] In an embodiment of the present invention, load current data is detected in real time, so that reactive power and harmonic changes in the power grid can be responded to quickly. In view of the resonance peak problem that may exist in the LCL filter at medium and high frequencies, the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic components are calculated, and the specified frequency harmonics are adjusted, thereby effectively suppressing the resonance phenomenon. It is ensured that the LCL filter can operate stably under a variety of working conditions. Compared with the traditional single-inductor filter, the LCL filter has the advantages of low cost and small size. This embodiment further exerts the advantages of the LCL filter and improves its use efficiency through precise control and harmonic suppression. Since this embodiment can detect the power grid status and adjust the control parameters in real time, this embodiment can not only cope with normal power grid changes, but also cope with complex situations such as changes in power grid impedance. This makes the reactive generator have higher stability when performing harmonic suppression. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of a first embodiment of a method for suppressing resonance of a reactive generator according to an embodiment of the present invention;

[0045] Figure 2 A schematic diagram of a specific embodiment of step 104 of the method for suppressing resonance of a reactive generator in an embodiment of the present invention;

[0046] Figure 3 1 is a schematic diagram of a specific embodiment of step 1044 of the method for suppressing resonance of a reactive generator in an embodiment of the present invention;

[0047] Figure 4 It is a schematic diagram of a specific embodiment after step 106 of the method for suppressing resonance of a reactive generator in an embodiment of the present invention;

[0048] Figure 5 The figure is a schematic diagram of an embodiment of a resonance suppression device for a reactive generator in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The embodiments of the present invention provide a method, a device and a storage medium for suppressing resonance of a reactive generator.

[0050] The embodiments disclosed in the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments disclosed in the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments disclosed in the present invention are only for exemplary purposes and are not intended to limit the scope of protection disclosed in the present invention.

[0051] In the description of the embodiments disclosed in the present invention, the term "including" and similar terms should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0052] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the method for suppressing resonance of a reactive generator in an embodiment of the present invention includes:

[0053] 101. Real-time detection of load current data;

[0054] Specifically, SVG samples the load current through an external CT.

[0055] 102. Calling a proportional resonance control algorithm to calculate reactive components and harmonic components according to the load current data;

[0056] Specifically, reactive components and harmonic components are extracted through a proportional resonance control algorithm, wherein the reactive component is used to compensate for the load current, and the harmonic component is self-compensated to ensure that the output reactive current does not contain harmonics.

[0057] Optionally, a proportional resonant controller is designed, which consists of a proportional link and a resonant link. The proportional link is used to provide basic gain, while the resonant link is used to generate resonance at a specific frequency, thereby realizing the extraction of reactive components and harmonic components.

[0058] The pre-processed load current signal is subjected to Fourier transform or a similar spectrum analysis method to decompose it into components of different frequencies.

[0059] By analyzing the spectrum, reactive components (mainly components near the fundamental frequency) and harmonic components (components higher than the fundamental frequency) can be identified.

[0060] The decomposed signal is input into the proportional resonant controller.

[0061] The proportional resonant controller processes the input signal according to the preset controller parameters (such as proportional coefficient, resonant frequency, etc.) and outputs the reactive component and harmonic component of the corresponding frequency.

[0062] Reactive components and harmonic components are extracted from the output of the proportional resonant controller.

[0063] The extracted reactive components and harmonic components are post-processed as necessary, such as filtering and quantization, to meet the needs of subsequent applications. The processed reactive components and harmonic components are output for use by other control systems or algorithms.

[0064] Specifically, step 102 includes the following specific implementations:

[0065] 1021. Filter the load current data to obtain filtered current data;

[0066] 1022. Calculate fundamental wave components and harmonic wave components from the filtered current data;

[0067] 1023. Call a proportional resonance control algorithm, and use the fundamental wave component and the harmonic component to perform calculations to obtain a reactive component.

[0068] In steps 1021-1023, the load current data is filtered and the proportional resonance control algorithm is called to calculate the reactive component, which can optimize the operating performance of the power grid, improve the power quality and energy utilization efficiency, and enhance the stability and reliability of the power grid system.

[0069] 103. According to the reactive component and the harmonic component, call the inverter current to compensate the load current, and detect the inverter current data and the grid voltage data;

[0070] Specifically, after the reactive component and the harmonic component are calculated by the proportional resonance control algorithm, the compensation mechanism of the inverter is triggered. The core function of the inverter is to generate a current opposite to the reactive component and the harmonic component in the load current, thereby achieving compensation for them.

[0071] Specifically, the inverter generates a current opposite to the calculated reactive power and harmonic components. The compensation current is injected into the grid to offset the reactive power and harmonic components in the load current. In this way, the reactive power and harmonic content in the grid can be effectively reduced.

[0072] During the compensation process, in order to ensure the accuracy and effectiveness of the compensation, the inverter current data and grid voltage data need to be monitored in real time.

[0073] Specifically, the inverter current data (SVG inverter current) and grid voltage data are sampled through the internal CT, and the high-order harmonic components are filtered out through the high-pass filter. When the harmonic components are too large, the load current sampling filter coefficient and Kp, K R , 0 and other coefficients to adjust the gain of the harmonics of the load current resonant frequency.

[0074] 104. Invoke a high-pass filter to filter the inverter current data and the grid voltage data to obtain high-frequency harmonic components;

[0075] Specifically, the acquisition of high-frequency harmonic components is achieved based on the characteristics of a high-pass filter. A high-pass filter is a combination of capacitors, inductors, resistors, etc. that allows signal components above a certain frequency to pass through, while greatly suppressing signal components below the frequency.

[0076] In this way, the high-pass filter can effectively extract the high-frequency harmonic components in the inverter current data and the grid voltage data. These high-frequency harmonic components are usually the main factors affecting the stability and power quality of the grid. By extracting them, key information can be provided for subsequent harmonic suppression and grid control.

[0077] Specifically, refer to Figure 2 , Figure 2 1 is a schematic diagram of a specific embodiment of step 104 of the method for suppressing resonance of a reactive generator in an embodiment of the present invention. Step 104 includes the following specific implementation methods:

[0078] 1041. Design a high-pass filter according to a preset formula;

[0079] Specifically, define the second-order high-pass filter transfer function , where s is the complex variable of the Laplace transform, is the natural frequency, is the damping ratio:

[0080] ;

[0081] Substituting a preset specified value into the second-order high-pass filter transfer function to obtain a filter parameter;

[0082] According to the filter parameters, a filter generation operation is performed to obtain a high-pass filter.

[0083] Among them, the high-pass filter can filter out the low-frequency signal, and the remaining signal is the harmonic signal. The high-frequency harmonics are analyzed and the corresponding harmonic parameters are adjusted.

[0084] 1042. Call the high-pass filter to perform a filtering operation on the inverter current data to obtain a high-frequency harmonic current component;

[0085] 1043. Call the high-pass filter to perform a filtering operation on the grid voltage data to obtain a high-frequency harmonic voltage component;

[0086] 1044. Perform a phase angle compensation operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component;

[0087] Specifically, refer to Figure 3 , Figure 3 1044 is a schematic diagram of a specific embodiment of the method for suppressing resonance of a reactive generator in an embodiment of the present invention. Step 1044 includes the following specific implementation methods. Step 1044 also includes the following specific methods:

[0088] Step 10441, performing a phase comparison operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a phase difference;

[0089] Step 10442: Calculate a compensation angle corresponding to the phase difference according to a preset phase angle;

[0090] Step 10443: Perform phase angle compensation operation according to the implementation compensation angle to obtain target high-frequency harmonic current components and target high-frequency harmonic voltage components.

[0091] In steps 10441-10443, the high-pass filter will cause phase delay, which is determined by its design principle and structure. In the resonance suppression method of the reactive generator, when the inverter current data and the grid voltage data are filtered using a high-pass filter, a phase delay will be introduced. This means that the extracted high-frequency harmonic components are deviated from the original signal in time, which may lead to inaccurate or distorted control. Therefore, after using the high-pass filter for signal processing, adding phase angle compensation is an important step to ensure the stability of the grid.

[0092] 1045. Use the target high-frequency harmonic current component and the target high-frequency harmonic voltage component as high-frequency harmonic components.

[0093] In steps 1041-1045, high-frequency harmonic currents and harmonic voltages are common interference sources in power systems, which may cause overheating and damage to equipment, and even affect the stability of the entire power grid system. By extracting these high-frequency harmonic components, they can be further analyzed and controlled, thereby improving the power quality of the power grid.

[0094] 105. Calculate the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component, and calculate the specified frequency harmonic corresponding to the high-frequency harmonic component;

[0095] Specifically, step 105 also includes the following specific implementation methods:

[0096] 1051. Analyze the target frequency corresponding to the high-frequency harmonic component;

[0097] Specifically, the target frequency is determined according to the high-frequency harmonic component. For example, by analyzing the frequency characteristics of the high-frequency harmonic component, the specific frequency that needs to be suppressed by the quasi-PR proportional resonant controller, that is, the target frequency, can be determined.

[0098] 1052. Calculate, according to the target frequency, parameters of a quasi-PR proportional resonant controller corresponding to the high-frequency harmonic component.

[0099] Among them, the quasi-PR proportional resonant controller is designed to enhance or suppress signals within a specific frequency or frequency range. This specific frequency or frequency range is the target frequency. By adjusting the parameters of the controller, especially the parameters related to resonance, the controller can have a higher gain at the target frequency, thereby achieving precise control of the frequency signal.

[0100] In the transfer function G(s), the target frequency affects the design of the resonant term. The resonant term usually contains sine or cosine functions related to the target frequency, which make the controller have special response characteristics at the target frequency. By adjusting the parameters of these resonant terms, the gain and phase response of the controller at the target frequency can be controlled.

[0101] For the quasi-PR proportional resonant controller, the following key parameters usually need to be set: proportional coefficient (K p ), resonance coefficient (K r ), resonant frequency (ω r ) and bandwidth (ω c ).

[0102] Resonant frequency (ω r ) is the angular frequency corresponding to the target frequency, which can be obtained by f = ω r / (2π) Converts the target frequency f to angular frequency.

[0103] Bandwidth (ω c ) determines the response width of the controller near the resonant frequency and needs to be selected based on system requirements and stability requirements.

[0104] Proportional coefficient (K p ) and the resonance coefficient (K R ) is determined through the system gain requirements and stability analysis.

[0105] Specifically, define the transfer function of the quasi-PR proportional resonant controller , where s is the complex variable of the Laplace transform, 0 is the resonant frequency, K R is the resonance coefficient, K p is the proportionality coefficient, ω c is the cut-off frequency:

[0106] ;

[0107] The quasi-PR proportional resonant controller transfer function generates quasi-PR proportional resonant controller parameters in response to the target frequency.

[0108] 106. According to the quasi-PR proportional resonant controller parameters, adjust the specified frequency harmonic to perform harmonic suppression.

[0109] Specifically, the PR controller is a high-performance power electronic control technology, mainly used for regulating AC voltage or current. The core purpose is to increase the gain amplitude of the system at a specific frequency point, so as to achieve accurate tracking and control of specific frequency signals. The quasi-PR proportional resonant control parameters are further optimization and adjustment of the performance of the PR controller. It mainly includes the proportional coefficient and the resonance coefficient. The proportional coefficient determines the linear relationship between the control output and the system error, affecting the response speed of the system; while the resonance coefficient is used to adjust the resonant frequency of the system, so as to achieve accurate tracking of specific frequency signals. By reasonably adjusting the parameters and optimization algorithm of the PR controller, harmonic suppression can be effectively performed.

[0110] Specifically, refer to Figure 4 , Figure 4 This is a schematic diagram of a specific embodiment after step 106 of the method for suppressing resonance of a reactive generator in an embodiment of the present invention, and the following specific implementation methods are included after step 106:

[0111] 107. Perform a matching operation in a virtual impedance database according to the inverter current data and the grid voltage data to obtain a target virtual impedance;

[0112] 108. Integrate the target virtual impedance into a control algorithm of the power grid to update control parameters of the power grid.

[0113] In steps 107-108, by integrating the target virtual impedance into the grid control algorithm, the impedance characteristics of the grid can be adjusted more accurately, thereby optimizing the response and stability of the grid. In particular, after harmonic suppression, the harmonic interference of the grid is reduced. At this time, adjusting the virtual impedance can further ensure the stable operation of the grid under various working conditions.

[0114] In an embodiment of the present invention, load current data is detected in real time, so that reactive power and harmonic changes in the power grid can be responded to quickly. In view of the resonance peak problem that may exist in the LCL filter at medium and high frequencies, the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic components are calculated, and the specified frequency harmonics are adjusted, thereby effectively suppressing the resonance phenomenon. It is ensured that the LCL filter can operate stably under a variety of working conditions. Compared with the traditional single-inductor filter, the LCL filter has the advantages of low cost and small size. This embodiment further exerts the advantages of the LCL filter and improves its use efficiency through precise control and harmonic suppression. Since this embodiment can detect the power grid status and adjust the control parameters in real time, this embodiment can not only cope with normal power grid changes, but also cope with complex situations such as changes in power grid impedance. This makes the reactive generator have higher stability when performing harmonic suppression.

[0115] Figure 5 1 is a schematic diagram of the structure of a resonance suppression device for a reactive generator provided by an embodiment of the present invention. The resonance suppression device 500 for a reactive generator may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 510 (for example, one or more processors) and a memory 520, and one or more storage media 530 (for example, one or more mass storage devices) storing application programs 533 or data 532. Among them, the memory 520 and the storage medium 530 may be short-term storage or permanent storage. The program stored in the storage medium 530 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations in the resonance suppression device 500 of the reactive generator. Furthermore, the processor 510 may be configured to communicate with the storage medium 530 to execute a series of instruction operations in the storage medium 530 on the resonance suppression device 500 of the reactive generator.

[0116] The reactive generator-based resonance suppression device 500 may further include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input and output interfaces 560, and / or one or more operating systems 531, such as Windows Serve, Mac OS X, Unix, Linux, Free BSD, etc. It will be appreciated by those skilled in the art that Figure 5 The structure of the resonance suppression device for the reactive generator shown does not constitute a limitation on the resonance suppression device based on the reactive generator, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0117] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the method for suppressing resonance of a reactive generator.

[0118] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0119] In addition, although each operation is described in a specific order, this should be understood as requiring such operation to be performed in the specific order shown or in a sequential order, or requiring that all illustrated operations should be performed to obtain desired results. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation can also be implemented in multiple implementations individually or in any suitable sub-combination mode.

[0120] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A method for suppressing resonance of a reactive generator, characterized in that: The resonance suppression method of the reactive generator comprises: Real-time detection of load current data; Calling a proportional resonance control algorithm to calculate reactive components and harmonic components according to the load current data; According to the reactive component and the harmonic component, calling the inverter current to compensate the load current, and detecting the inverter current data and the grid voltage data; Invoking a high-pass filter to perform filtering operations on the inverter current data and the grid voltage data to obtain high-frequency harmonic components; Calculating the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component, and calculating the specified frequency harmonic corresponding to the high-frequency harmonic component; According to the quasi-PR proportional resonant controller parameters, adjusting the specified frequency harmonics to perform harmonic suppression; The step of calling a high-pass filter to filter the inverter current data and the grid voltage data to obtain high-frequency harmonic components includes: Design a high-pass filter according to a preset formula; Calling the high-pass filter to perform a filtering operation on the inverter current data to obtain a high-frequency harmonic current component; Calling the high-pass filter to perform filtering operation on the grid voltage data to obtain high-frequency harmonic voltage components; Performing a phase angle compensation operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component; Taking the target high-frequency harmonic current component and the target high-frequency harmonic voltage component as high-frequency harmonic components; Wherein, the step of designing a high-pass filter according to a preset formula includes: Define the second-order high-pass filter transfer function H(s), where s is the complex variable of the Laplace transform, ω n is the natural frequency and ζ is the damping ratio: Substituting a preset specified value into the second-order high-pass filter transfer function to obtain a filter parameter; According to the filter parameters, a filter generation operation is performed to obtain a high-pass filter.

2. The method for suppressing resonance of a reactive generator according to claim 1, characterized in that: The step of calculating the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic components comprises: Analyzing the target frequency corresponding to the high-frequency harmonic component; According to the target frequency, the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component are calculated.

3. The method for suppressing resonance of a reactive generator according to claim 2, characterized in that: The step of calculating the quasi-PR proportional resonant controller parameters corresponding to the high-frequency harmonic component according to the target frequency comprises: Define the transfer function of the quasi-PR proportional resonant controller G(s), where s is the complex variable of the Laplace transform, ω0 is the resonant frequency, K R is the resonance coefficient, K p is the proportionality coefficient, ω c is the cut-off frequency: The quasi-PR proportional resonant controller transfer function generates quasi-PR proportional resonant controller parameters in response to the target frequency.

4. The method for suppressing resonance of a reactive generator according to claim 1, characterized in that: The step of calling the proportional resonance control algorithm and calculating the reactive component and the harmonic component according to the load current data comprises: Filtering the load current data to obtain filtered current data; Calculating fundamental wave components and harmonic wave components from the filtered current data; A proportional resonance control algorithm is called to calculate the reactive component using the fundamental wave component and the harmonic component.

5. The method for suppressing resonance of a reactive generator according to claim 1, characterized in that: The step of performing phase angle compensation operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component comprises: Performing a phase comparison operation on the high-frequency harmonic current component and the high-frequency harmonic voltage component to obtain a phase difference; Calculating a compensation angle corresponding to the phase difference according to a preset phase angle; A phase angle compensation operation is performed according to the implementation compensation angle to obtain a target high-frequency harmonic current component and a target high-frequency harmonic voltage component.

6. The method for suppressing resonance of a reactive generator according to claim 1, characterized in that: After the step of adjusting the specified frequency harmonics according to the quasi-PR proportional resonant controller parameters to perform harmonic suppression, the method further includes: According to the inverter current data and the grid voltage data, a matching operation is performed in a virtual impedance database to obtain a target virtual impedance; The target virtual impedance is integrated into a control algorithm of the power grid to update control parameters of the power grid.

7. A resonance suppression device for a reactive generator, characterized in that: The resonance suppression device of the reactive generator comprises: a memory and at least one processor, the memory stores instructions, and the memory and the at least one processor are interconnected via a line; The at least one processor calls the instructions in the memory to enable the resonance suppression device of the reactive generator to perform the resonance suppression method of the reactive generator according to any one of claims 1-6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the resonance suppression method of a reactive generator according to any one of claims 1 to 6 is implemented.

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