A resource-aware converter grid-forming control method and system

Abstract

The application belongs to the technical field of new energy network construction control, and discloses a resource-aware type converter network construction control method and system, which can realize resource-aware type network construction control strategy of new energy network operation under the premise of maintaining the DC bus voltage level, control the power injected into the power grid by adjusting the power extracted from the new energy power generation resource, realize the coordinated operation among the new energy power generation device, the network construction converter and the power grid, and stabilize the DC side voltage by introducing a DC voltage control link to ensure the stable operation of the system. In addition, the application also has the advantages of flexible control structure, low calculation demand and rich functions, and is beneficial to large-scale practical application.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy network construction control, and relates to a resource-aware converter network construction control method and system. Background Art

[0002] As renewable energy penetration increases, the number of synchronous generator-based power plants in AC grids decreases, leading to lower system inertia and short-circuit currents. To address these issues, voltage source converters operating in grid-connected mode have become the preferred solution. Voltage source converters, through their voltage source-based nature, improve AC grid stability, thereby supporting the integration of a higher proportion of renewable energy into the power system.

[0003] In practical applications, achieving AC networking requires two key components: AC voltage control and a synchronization loop. Current solutions for AC voltage control include cascaded voltage control and virtual impedance / admittance control. However, existing control schemes may not fully implement coordinated control of multiple coupled functions. Furthermore, not all methods consider the actual resources and operational constraints of the converters used in network control, such as minimum and maximum DC voltages. This can lead to converter failures, system failures, or the inability to adjust output as intended.

[0004] In view of this, it is very necessary to propose a resource-aware grid control technology covering different control functions (virtual inertia, virtual damping and frequency response subject to resource constraints) for renewable energy power generation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a resource-aware converter networking control method and system in view of the deficiencies in the prior art.

[0006] The technical solution adopted in the present invention is:

[0007] A resource-aware converter network control method, characterized by comprising the following steps:

[0008] In the internal potential phase generation link, the actual value of active power output by the new energy power generation device P rpg The active power output P of the grid converter gfm Subtract the difference and multiply it by the active loop adjustment factor k1 to obtain the active adjustment parameter P tune ;

[0009] Based on the actual value of the DC side voltage v of the grid converter dc Get the voltage regulation parameter v tune ;

[0010] Based on the obtained active power regulation parameter Ptune and voltage regulation parameter v tune Obtain the potential phase θ within the network system;

[0011] In the internal potential amplitude generation link, the reactive power given value Q ref and reactive damping Q d Add them together and the resulting value is equal to the grid converter output reactive power Q gfm Subtract the difference, divide it by the voltage integral coefficient K and integrate it to get the potential amplitude E in the network system;

[0012] Step 5: Calculate the three-phase modulation wave according to the potential phase θ and the potential amplitude E in the grid system and generate a PWM modulation wave to drive the grid converter.

[0013] Moreover, the expression of the active loop adjustment factor k1 is:

[0014]

[0015] Among them, k d is the damping coefficient of the grid converter, X L is the AC side filter inductance of the grid converter, H is the virtual inertia, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage, V gfm is the modulation voltage amplitude of the grid converter.

[0016] Moreover, the actual value of the DC side voltage v of the grid-connected converter is dc Get the voltage regulation parameter v tune The method is: set the DC side voltage of the grid converter to a given value v dcref Square and subtract the actual value of the DC side voltage of the grid converter v dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune .

[0017] Moreover, the active power adjustment parameter P obtained is tune and voltage regulation parameter v tune The method to obtain the potential phase θ in the grid system is: tune and voltage regulation parameter v tune Add the obtained value to the reference angular frequency ω0 of the network system to obtain the actual angular frequency ω of the network system. Integrate the actual angular frequency ω of the network system to obtain the potential phase θ in the network system.

[0018] Moreover, the reactive damping amount Q d The expression is:

[0019] Q d =kq (V ref -V ac )

[0020] Among them, k q is the reactive damping coefficient of the grid converter, V ref is the voltage rating of the common coupling point where the grid converter interacts with the voltage, V ac It is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage.

[0021] Furthermore, the parameter selection method of the voltage loop adjustment factor k2 is: selecting according to the determined DC side support capacitance value of the grid-connected converter or according to the virtual inertia required by the application, specifically:

[0022] When the DC side support capacitance value of the grid converter is determined, the expression of the voltage loop adjustment factor k2 is:

[0023]

[0024] Among them, Δω min The frequency range in which the grid converter and frequency converter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

[0025] Furthermore, the parameter selection method of the voltage loop adjustment factor k2 is as follows: the parameter of the voltage loop adjustment factor k2 is selected according to the virtual inertia required by the application. The expression of the voltage loop adjustment factor k2 is:

[0026]

[0027] Among them, C is the DC side support capacitance value of the grid converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid system, P n It is the rated active power of the network system.

[0028] A resource-aware converter network control system, characterized by comprising an active power control module, a DC voltage control module, an internal potential phase generation module, an internal potential amplitude generation module, a three-phase modulation wave calculation module, and a PWM modulation module.

[0029] The active power control module is used to calculate the actual value of active power P output by the new energy power generation device. rpg The active power output P of the grid converter gfm By multiplying the difference with the active loop adjustment factor k1, the active adjustment parameter P is obtained. tune ;

[0030] The DC voltage control module is used to control the actual value of the DC side voltage v of the grid converter. dcReach the DC side voltage set value v of the grid converter dcref , and obtain the voltage regulation parameter v tune ;

[0031] The internal potential phase generation module is used to adjust the active power parameter P tune , voltage regulation parameter v tune and the reference angular frequency ω0 of the network system, the potential phase θ in the network system is obtained;

[0032] The internal potential amplitude generation module is used to generate the internal potential amplitude based on the reactive power given value Q ref , reactive damping Q d The reactive power Q output by the grid converter gfm , obtain the potential amplitude E in the network system;

[0033] The three-phase modulation wave calculation module is used to generate a three-phase modulation wave according to the potential phase θ and the potential amplitude E in the network system;

[0034] The PWM modulation module is used to generate a PWM modulation wave through the generated three-phase modulation wave and drive the grid-connected converter.

[0035] Moreover, the expression of the active loop adjustment factor k1 is:

[0036]

[0037] Among them, k d is the damping coefficient of the grid converter, X L is the AC side filter inductance of the grid converter, H is the virtual inertia, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage, V gfm is the modulation voltage amplitude of the grid converter.

[0038] Moreover, the DC voltage control module is used to control the actual value v of the DC side voltage of the grid converter. dc Reach the DC side voltage set value v of the grid converter dcref , and obtain the voltage regulation parameter v tune The method is: set the DC side voltage of the grid converter to a given value v dcref Square and subtract the actual value of the DC side voltage of the grid converter v dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune .

[0039] Furthermore, the parameter selection method of the voltage loop adjustment factor k2 is: selecting according to the determined DC side support capacitance value of the grid-connected converter or according to the virtual inertia required by the application, specifically:

[0040] When the DC side support capacitance value of the grid converter is determined, the expression of the voltage loop adjustment factor k2 is:

[0041]

[0042] Among them, Δω min The frequency range in which the grid converter and frequency converter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

[0043] Furthermore, the parameter selection method of the voltage loop adjustment factor k2 is as follows: the parameter of the voltage loop adjustment factor k2 is selected according to the virtual inertia required by the application. The expression of the voltage loop adjustment factor k2 is:

[0044]

[0045] Among them, C is the DC side support capacitance value of the grid converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid system, P n It is the rated active power of the network system.

[0046] Moreover, the internal potential phase generation module is used to adjust the active power parameter P tune , voltage regulation parameter v tune and the reference angular frequency ω0 of the grid system, the method to obtain the potential phase θ in the grid system is: tune and voltage regulation parameter v tune Add the obtained value to the reference angular frequency ω0 of the network system to obtain the actual angular frequency ω of the network system. Integrate the actual angular frequency ω of the network system to obtain the potential phase θ in the network system.

[0047] Moreover, the reactive damping amount Q d The expression is:

[0048] Q d =k q (V ref -V ac )

[0049] Among them, k q is the reactive damping coefficient of the grid converter, V ref is the voltage rating of the common coupling point where the grid converter interacts with the voltage, V ac It is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage.

[0050] A computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the resource-aware converter networking control method according to any one of claims 1 to 7 is implemented.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] This resource-aware converter grid control method and system can maintain DC voltage while operating in grid-forming mode on the AC side. Key features include: This method takes into account the actual resources and operational constraints of the converter in grid-forming control, ensuring practical feasibility and ensuring stable control and the achievement of desired operational objectives; a simple structure, easy implementation and parameter adjustment, and low computational resource requirements; and the ability to simulate synchronous generator inertia and damping regardless of the DC power supply characteristics.

[0053] This invention proposes a resource-aware grid control strategy that enables renewable energy grid operation while maintaining DC bus voltage levels. By adjusting the power extracted from renewable energy generation resources to control the power injected into the grid, this strategy achieves coordinated operation among renewable energy generation devices, grid converters, and the grid. Furthermore, by introducing a DC voltage control link, it stabilizes the DC side voltage and ensures stable system operation. Furthermore, this invention offers the advantages of a flexible control structure, low computational requirements, and rich functionality, making it suitable for large-scale practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is the main circuit topology diagram of the new energy network system of the present invention;

[0055] Figure 2 This is a control block diagram of the resource-aware converter networking control method of the present invention;

[0056] Figure 3 A closed-loop control scheme diagram for a resource-aware converter network control system;

[0057] Figure 4 This is a simulation curve of the frequency changing with time after the active power output of the new energy is simulated by the present invention;

[0058] Description of reference numerals:

[0059] 1- New energy power generation module, 2- Grid converter, 3- Grid converter AC side filter inductor, 4- Grid converter DC side support capacitor, 5- Grid side line impedance, 6- Synchronous generator. DETAILED DESCRIPTION

[0060] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0061] Figure 1 This is the main circuit topology diagram of the new energy grid system involved in the present invention, which includes a new energy generation module 1, a grid converter 2, a grid converter AC-side filter inductor 3, a grid converter DC-side support capacitor 4, a grid-side line impedance 5, and a synchronous generator 6. The voltage and current output by the new energy generation module are filtered by the grid converter DC-side support capacitor, converted to AC by the grid converter, and then filtered by the grid converter AC-side filter inductor before being connected to the grid.

[0062] Figure 2 This is a control block diagram of the resource-aware converter networking control method involved in the present invention. The specific implementation steps include:

[0063] A resource-aware converter network control method, the innovation of which is that it includes the following steps:

[0064] Step 1: In the internal potential phase generation link, the actual value of the active power output by the new energy power generation device P rpg The active power output P of the grid converter gfm Subtract the difference and multiply it by the active loop adjustment factor k1 to obtain the active adjustment parameter P tune ;

[0065] The expression of the active loop adjustment factor k1 is:

[0066]

[0067] Among them, k d is the damping coefficient of the grid converter, X L is the AC side filter inductance of the grid converter, H is the virtual inertia, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage, V gfm Modulate the voltage amplitude for the grid converter;

[0068] Step 2: Based on the actual value of the DC side voltage v of the grid converter dc Get the voltage regulation parameter v tune , set the DC side voltage of the grid converter to a given value v dcref Square and subtract the actual value of the DC side voltage of the grid converter v dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune ;

[0069] There are two options for selecting the parameters of the voltage loop adjustment factor k2. One option is to select the parameter based on the DC side support capacitance value of the grid-connected converter or based on the virtual inertia required by the application. When the DC side support capacitance value of the grid-connected converter is determined, the expression of the voltage loop adjustment factor k2 is:

[0070]

[0071] Among them, Δω min The frequency range in which the grid converter and frequency converter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

[0072] When the parameters of the voltage loop adjustment factor k2 are selected according to the virtual inertia required by the application, the expression of the voltage loop adjustment factor k2 is:

[0073]

[0074] Among them, C is the DC side support capacitance value of the grid converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid system, P n It is the rated active power value of the network system;

[0075] Step 3: Based on the obtained active power adjustment parameter P tune and voltage regulation parameter v tune Obtain the potential phase θ in the grid system and adjust the active power parameter P tune and voltage regulation parameter v tune Add the obtained value to the reference angular frequency ω0 of the network system to obtain the actual angular frequency ω of the network system. Integrate the actual angular frequency ω of the network system to obtain the potential phase θ in the network system.

[0076] Step 4: In the internal potential amplitude generation link, the reactive power given value Q ref and reactive damping Q d Add them together and the resulting value is equal to the grid converter output reactive power Q gfm Subtract the difference, divide it by the voltage integral coefficient K and integrate it to get the potential amplitude E in the network system;

[0077] The reactive damping amount Q d The expression is:

[0078] Q d =k q (V ref -V ac )

[0079] Among them, k q is the reactive damping coefficient of the grid converter, V refis the voltage rating of the common coupling point where the grid converter interacts with the voltage, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage;

[0080] Step 5: Calculate the three-phase modulation wave according to the potential phase θ and the potential amplitude E in the grid system and generate a PWM modulation wave to drive the grid converter.

[0081] Figure 3 This is a closed-loop control scheme diagram of the resource-aware converter network control system involved in the present invention. The closed-loop system consists of three parts: the renewable energy generation side, the network converter, and the grid side. In the closed-loop system, the renewable energy generation side is based on the set rated active power value P of the network system. n The DC side voltage setting value v of the grid converter dcref , output the actual value of the DC side voltage of the grid converter v dc And the actual value of active power output by the new energy power generation device P rpg , where k dc is the droop coefficient.

[0082] The grid converter generates active power regulation parameter P based on active power control and DC voltage control. tune and voltage regulation parameter v tune , and further generate the potential phase θ within the network system, as shown in the following formula:

[0083]

[0084] Among them, ω0 is the reference angular frequency of the network system, k1 is the active loop adjustment factor, k2 is the voltage loop adjustment factor, v dcref is the given value of the DC side voltage of the grid converter, v dc is the actual value of the DC side voltage of the grid converter, P rpg is the actual value of active power output by the new energy power generation device, P gfm is the active power output by the grid converter, ω is the actual angular frequency of the grid system, θ is the potential phase in the grid system, and s is the complex frequency.

[0085] The grid side is constructed by the potential phase θ in the grid system and the grid phase θ ac , obtain the grid converter output active power P gfm , as shown below:

[0086]

[0087] Among them, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage, V gfm is the modulation voltage amplitude of the grid converter, X Lis the AC side filter inductance of the grid converter, θ is the potential phase in the grid system, θ ac is the grid phase.

[0088] The actual value of the DC side voltage v of the grid converter is dc , the actual value of active power output by the new energy power generation device P rpg , the potential phase θ in the grid system and the active power output P of the grid converter gfm Four physical quantities connect the renewable energy power generation side, grid-connected converter and grid side into an equivalent closed-loop system.

[0089] Figure 4 After introducing the proposed resource-aware converter network control method for an embodiment of the present invention, a simulation curve of the frequency change over time after the active power output of the renewable energy source changes is simulated. The simulation curves of the frequency change over time when the resource-aware converter network control method, virtual synchronous machine control, and virtual inertia control are respectively adopted within 0 to 20 seconds are simulated. By setting the change of the renewable energy output active power at the 5th second, it is observed that the system frequency curves under different methods will drop, but the frequency curve corresponding to the proposed resource-aware converter network control method has the smallest change and can reach stability, indicating that the control method plays the role of providing virtual inertia and damping.

[0090] Simulation results show that the proposed method can better achieve the coordinated operation among renewable energy power generation devices, grid-connected converters and power grids compared with existing strategies, and the proposed control strategy can enhance the stability of the system.

[0091] The embodiment of the present invention further discloses a resource-aware converter network control system, comprising the following modules:

[0092] Active power control module, DC voltage control module, internal potential phase generation module, internal potential amplitude generation module, three-phase modulation wave calculation module and PWM modulation module,

[0093] The active power control module is used to calculate the actual value of active power P output by the new energy power generation device. rpg The active power output P of the grid converter gfm By multiplying the difference with the active loop adjustment factor k1, the active adjustment parameter P is obtained. tune ;

[0094] The DC voltage control module is used to control the actual value of the DC side voltage v of the grid converter. dc Reach the DC side voltage set value v of the grid converter dcref , and obtain the voltage regulation parameter v tune ;

[0095] The internal potential phase generation module is used to adjust the active power parameter P tune , voltage regulation parameter v tune and the reference angular frequency ω0 of the network system, by adjusting the active power regulation parameter P tune , voltage regulation parameter v tune Sum it with the reference angular frequency ω0 of the network system, and integrate the summation result to obtain the potential phase θ in the network system;

[0096] The internal potential amplitude generation module is used to generate the internal potential amplitude based on the reactive power given value Q ref , reactive damping Q d The reactive power Q output by the grid converter gfm , obtain the potential amplitude E in the network system;

[0097] The three-phase modulation wave calculation module is used to generate a three-phase modulation wave according to the potential phase θ and the potential amplitude E in the network system;

[0098] The PWM modulation module is used to generate a PWM modulation wave through the generated three-phase modulation wave and drive the grid-connected converter.

[0099] A computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the resource-aware converter networking control method according to any one of claims 1 to 7 is implemented.

[0100] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A resource-aware converter network control method, characterized by: The steps include: In the internal potential phase generation link, the actual value of active power output by the new energy power generation device P rpg The active power output P of the grid converter gfm Subtract the difference and multiply it by the active loop adjustment factor k1 to obtain the active adjustment parameter P tune ; Based on the actual value of the DC side voltage v of the grid converter dc Get the voltage regulation parameter v tune ; Based on the obtained active power regulation parameter P tune and voltage regulation parameter v tune Obtain the potential phase θ within the network system; In the internal potential amplitude generation link, the reactive power given value Q ref and reactive damping Q d Add them together and the resulting value is equal to the grid converter output reactive power Q gfm Subtract the difference, divide it by the voltage integral coefficient K and integrate it to get the potential amplitude E in the network system; According to the potential phase θ and the potential amplitude E in the grid system, a three-phase modulation wave is calculated and a PWM modulation wave is generated to drive the grid converter; The active power adjustment parameter P obtained tune and voltage regulation parameter v tune The method to obtain the potential phase θ in the grid system is: tune and voltage regulation parameter v tune Add the obtained value to the reference angular frequency ω0 of the network system to obtain the actual angular frequency ω of the network system. Integrate the actual angular frequency ω of the network system to obtain the potential phase θ in the network system. The reactive damping amount Q d The expression is: Q d =k q (V ref -V ac ) Among them, k q is the reactive damping coefficient of the grid converter, V ref is the voltage rating of the common coupling point where the grid converter interacts with the voltage, V ac It is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage.

2. The resource-aware converter network control method according to claim 1, characterized in that: The expression of the active loop adjustment factor k1 is: Among them, k d is the damping coefficient of the grid converter, X L is the AC side filter inductance of the grid converter, H is the virtual inertia, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage, V gfm is the modulation voltage amplitude of the grid converter.

3. The resource-aware converter network control method according to claim 1, characterized in that: The actual value of the DC side voltage v of the grid-connected converter is dc Get the voltage regulation parameter v tune The method is: set the DC side voltage of the grid converter to a given value v dcref Square and subtract the actual value of the DC side voltage of the grid converter v dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune .

4. The resource-aware converter network control method according to claim 3, characterized in that: The parameter selection method of the voltage loop adjustment factor k2 is: selecting according to the determined DC side support capacitance value of the grid-connected converter, specifically: When the DC side support capacitance value of the grid converter is determined, the expression of the voltage loop adjustment factor k2 is: Among them, Δω min The frequency range in which the grid converter and frequency converter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

5. The resource-aware converter network control method according to claim 3, characterized in that: The parameter selection method of the voltage loop adjustment factor k2 is as follows: the parameter of the voltage loop adjustment factor k2 is selected according to the virtual inertia required by the application. The expression of the voltage loop adjustment factor k2 is: Among them, C is the DC side support capacitance value of the grid converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid system, P n It is the rated active power value of the network system.

6. A resource-aware converter network control system, characterized by: It includes active power control module, DC voltage control module, internal potential phase generation module, internal potential amplitude generation module, three-phase modulation wave calculation module and PWM modulation module. The active power control module is used to calculate the actual value of active power P output by the new energy power generation device. rpg The active power output P of the grid converter gfm By multiplying the difference with the active loop adjustment factor k1, the active adjustment parameter P is obtained. tune ; The DC voltage control module is used to control the actual value of the DC side voltage v of the grid converter. dc Reach the DC side voltage set value v of the grid converter dcref , and obtain the voltage regulation parameter v tune ; The internal potential phase generation module is used to adjust the active power parameter P tune , voltage regulation parameter v tune and the reference angular frequency ω0 of the network system, the potential phase θ in the network system is obtained; The internal potential amplitude generation module is used to generate the internal potential amplitude based on the reactive power given value Q ref , reactive damping Q d The reactive power Q output by the grid converter gfm , obtain the potential amplitude E in the network system; The three-phase modulation wave calculation module is used to generate a three-phase modulation wave according to the potential phase θ and the potential amplitude E in the network system; The PWM modulation module is used to generate a PWM modulation wave through the generated three-phase modulation wave and drive the grid-connected converter; The internal potential phase generation module is used to adjust the active power parameter P tune , voltage regulation parameter v tune and the reference angular frequency ω0 of the grid system, the method to obtain the potential phase θ in the grid system is: tune and voltage regulation parameter v tune Add the obtained value to the reference angular frequency ω0 of the network system to obtain the actual angular frequency ω of the network system. Integrate the actual angular frequency ω of the network system to obtain the potential phase θ in the network system. The reactive damping amount Q d The expression is: Q d =k q (V ref -V ac ) Among them, k q is the reactive damping coefficient of the grid converter, V ref is the voltage rating of the common coupling point where the grid converter interacts with the voltage, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage; The expression of the active loop adjustment factor k1 is: Among them, k d is the damping coefficient of the grid converter, X L is the AC side filter inductance of the grid converter, H is the virtual inertia, V ac is the voltage amplitude at the common coupling point where the grid converter interacts with the voltage, V gfm is the modulation voltage amplitude of the grid converter.

7. The resource-aware converter network control system according to claim 6, characterized in that: The DC voltage control module is used to control the actual value of the DC side voltage v of the grid converter. dc Reach the DC side voltage set value v of the grid converter dcref , and obtain the voltage regulation parameter v tune The method is: set the DC side voltage of the grid converter to a given value v dcref Square and subtract the actual value of the DC side voltage of the grid converter v dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune .

8. The resource-aware converter network control system according to claim 7, characterized in that: The parameter selection method of the voltage loop adjustment factor k2 is: selecting according to the determined DC side support capacitance value of the grid-connected converter, specifically: When the DC side support capacitance value of the grid converter is determined, the expression of the voltage loop adjustment factor k2 is: Among them, Δω min The frequency range in which the grid converter and frequency converter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

9. The resource-aware converter network control system according to claim 7, characterized in that: The parameter selection method of the voltage loop adjustment factor k2 is as follows: the parameter of the voltage loop adjustment factor k2 is selected according to the virtual inertia required by the application. The expression of the voltage loop adjustment factor k2 is: Among them, C is the DC side support capacitance value of the grid converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid system, P n It is the rated active power value of the network system.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the resource-aware converter networking control method according to any one of claims 1 to 5 is implemented.

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