Resource awareness type converter network construction control method and system

Abstract

The invention belongs to the technical field of new energy networking control, and discloses a resource sensing type converter networking control method and system, which can realize a resource sensing type networking control strategy of new energy networking operation on the premise of keeping the voltage level of a direct current bus. The power injected into the power grid is controlled by adjusting the power extracted from the new energy power generation resources, so that coordinated operation among the new energy power generation device, the grid construction converter and the power grid is realized; and by introducing a direct-current voltage control link, the direct-current side voltage is stabilized, and stable operation of the system is ensured. In addition, the method also has the advantages of flexible control structure, low calculation requirement 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 the penetration of renewable energy increases, the number of synchronous generator-based power plants in the AC grid decreases, resulting in lower system inertia and lower short-circuit current. To address these issues, voltage source converters operating in grid-forming mode have become the preferred solution. Voltage source converters improve the stability of the AC grid through their voltage source-based characteristics, thereby supporting a higher proportion of renewable energy access to the power system.

[0003] In practical applications, two key parts are required to realize AC networking, namely AC voltage control and synchronization loop. In terms of AC voltage control, current schemes include cascade voltage control, virtual impedance / admittance control, etc. However, existing control schemes may not be able to fully realize coordinated control under multiple functional coupling. In addition, not all methods take into account the actual resources in the networking control and the actual operation limitations of the converter, such as the minimum or maximum DC voltage, so that the converter may not work properly, resulting in system failure or failure to adjust the output in the predetermined manner.

[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 by the present invention is:

[0007] A resource-aware converter network control method, characterized in that it comprises 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 P output by the grid converter gfm Subtract the difference, multiply it by the active loop adjustment factor k1, and get the active adjustment parameter P tune ;

[0009] Based on the actual value of the DC side voltage v of the grid-connected 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 in 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, divide the difference by the voltage integral coefficient K and integrate to obtain 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-connected 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 of the grid converter.

[0016] Moreover, the actual value v of the DC side voltage 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 v of the grid converter 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 based on tune and voltage regulation parameter v tune The method for obtaining 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 networking system to obtain the actual angular frequency ω of the networking system. Integrate the actual angular frequency ω of the networking system to obtain the potential phase θ in the networking 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] Moreover, 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-connected converter is determined, the expression of the voltage loop adjustment factor k2 is:

[0023]

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

[0025] Moreover, the parameter selection method of the voltage loop adjustment factor k2 is: selecting the parameter of the voltage loop adjustment factor k2 according to the virtual inertia required by the application, and the expression of the voltage loop adjustment factor k2 is:

[0026]

[0027] Where C is the DC side support capacitance of the grid-connected converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid-connected system, and P n It is the rated active power of the grid system.

[0028] A resource-aware converter network control system, characterized in that it includes 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 P output by 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 v of the DC side voltage of the grid-connected converter. dcReach the DC side voltage setting 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, and obtain the potential phase θ in the network system;

[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 of 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 through 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-connected 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 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-connected converter. dc Reach the DC side voltage setting 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 v of the grid converter dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune .

[0039] Moreover, 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-connected converter is determined, the expression of the voltage loop adjustment factor k2 is:

[0041]

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

[0043] Moreover, the parameter selection method of the voltage loop adjustment factor k2 is: selecting the parameter of the voltage loop adjustment factor k2 according to the virtual inertia required by the application, and the expression of the voltage loop adjustment factor k2 is:

[0044]

[0045] Where C is the DC side support capacitance of the grid-connected converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid-connected system, and P n It is the rated active power of the grid 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 the voltage regulation parameter v tune Add the obtained value to the reference angular frequency ω0 of the networking system to obtain the actual angular frequency ω of the networking system. Integrate the actual angular frequency ω of the networking system to obtain the potential phase θ in the networking 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 the computer program, when executed by a processor, implements the resource-aware converter networking control method according to any one of claims 1 to 7.

[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 the DC side voltage while operating in grid mode on the AC side. The main features include: the method takes into account the actual resources in grid control and the actual operation limitations of the converter, and is feasible in practical applications, thereby ensuring the stability of the control effect and the achievement of the expected operation goals; the structure is simple, easy to implement and adjust parameters, and has low requirements for computing resources; regardless of the characteristics of the DC side power supply, the inertia and damping of the synchronous generator can be simulated.

[0053] The present invention proposes a resource-aware grid control strategy that can realize the operation of new energy grid construction under the premise of maintaining the DC bus voltage level. The power injected into the grid is controlled by adjusting the power extracted from the new energy power generation resources to realize the coordinated operation between the new energy power generation device, the grid construction converter and the grid; and by introducing the DC voltage control link, the DC side voltage is stabilized to ensure the stable operation of the system. In addition, the present invention also has the advantages of flexible control structure, low computing requirements and rich functions, which is conducive to large-scale practical application. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0055] Figure 2 It 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 It is a simulation curve of the frequency changing with time after simulating the change of the active power output of the new energy in the present invention;

[0058] Description of reference numerals:

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

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

[0061] Figure 1 The main circuit topology diagram of the new energy grid system involved in the present invention includes a new energy power 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 power generation module are filtered by the grid converter DC side support capacitor, converted into AC by the grid converter, and connected to the grid after filtering by the grid converter AC side filter inductor.

[0062] Figure 2 This is a control block diagram of the resource-aware converter networking control method involved in the present invention, and 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 active power output by the new energy power generation device P rpg The active power P output by the grid converter gfm Subtract the difference, multiply it by the active loop adjustment factor k1, and get 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-connected 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-connected converter;

[0068] Step 2: Based on the actual value of the DC side voltage v of the grid-connected 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 v of the grid converter 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, which can be selected according to the determined DC side support capacitance value of the grid-forming converter or according to the virtual inertia required by the application. When the DC side support capacitance value of the grid-forming converter is determined, the expression of the voltage loop adjustment factor k2 is:

[0070]

[0071] Among them, Δω min is the frequency range in which the grid converter inverter 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] Where C is the DC side support capacitance of the grid-connected converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid-connected system, and P n It is the rated active value of the grid 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, divide the difference by the voltage integral coefficient K and integrate to obtain the potential amplitude E in the network system;

[0077] The reactive damping quantity 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 The closed-loop control scheme diagram of the resource-aware converter grid control system involved in the present invention is shown in Figure 1. The closed-loop system consists of three parts: the renewable energy generation side, the grid-connected converter, and the grid side. In the closed-loop system, the renewable energy generation side is based on the set grid-connected system rated active value P n The DC side voltage setting value v of the grid converter dcref , the actual value of the DC side voltage of the output 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-connected converter generates active power regulation parameters P based on active power control and DC voltage control. tune and the voltage regulation parameter v tune , and further generate the potential phase θ in 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 P output by the grid converter gfm Four physical quantities connect the renewable energy power generation side, grid-connected converter and power grid side into an equivalent closed-loop system.

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

[0090] The simulation results show that the method proposed in the present invention can better achieve the coordinated operation among the renewable energy power generation device, the grid-connected converter and the power grid compared with the existing strategy, 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 P output by 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 v of the DC side voltage of the grid-connected converter. dc Reach the DC side voltage setting 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 grid system, by changing the active power regulation parameter P tune , voltage regulation parameter v tune Sum the reference angular frequency ω0 of the network system, and integrate the sum 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 of 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 through 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 the computer program, when executed by a processor, implements the resource-aware converter networking control method according to any one of claims 1 to 7.

[0100] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate 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 in that: 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 P output by the grid converter gfm Subtract the difference, multiply it by the active loop adjustment factor k1, and get the active adjustment parameter P tune ; Based on the actual value of the DC side voltage v of the grid-connected 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 in 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, divide the difference by the voltage integral coefficient K and integrate to obtain the potential amplitude E in the network system; 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.

2. A resource-aware converter networking 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-connected 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 of the grid converter.

3. The resource-aware converter networking control method according to claim 1, characterized in that: The actual value v of the DC side voltage 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 v of the grid converter 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 networking control method according to claim 1, characterized in that: The active power adjustment parameter P obtained based on tune and voltage regulation parameter v tune The method for obtaining 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 networking system to obtain the actual angular frequency ω of the networking system. Integrate the actual angular frequency ω of the networking system to obtain the potential phase θ in the networking system.

5. The resource-aware converter networking control method according to claim 1, characterized in that: The reactive damping quantity 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.

6. A resource-aware converter networking 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 or according to the virtual inertia required by the application, specifically: When the DC side support capacitance value of the grid-connected converter is determined, the expression of the voltage loop adjustment factor k2 is: Among them, Δω min is the frequency range in which the grid converter inverter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

7. The resource-aware converter networking control method according to claim 3, characterized in that: The parameter selection method of the voltage loop adjustment factor k2 is: select the parameter of the voltage loop adjustment factor k2 according to the virtual inertia required by the application. The expression of the voltage loop adjustment factor k2 is: Where C is the DC side support capacitance of the grid-connected converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid-connected system, and P n It is the rated active power of the grid system.

8. A resource-aware converter network control system, characterized in that: It includes 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. 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 P output by 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 v of the DC side voltage of the grid-connected converter. dc Reach the DC side voltage setting 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, and obtain the potential phase θ in the network system; 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 of 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 through 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.

9. A resource-aware converter network control system according to claim 6, 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-connected 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 of the grid converter.

10. The resource-aware converter network control system according to claim 1, characterized in that: The DC voltage control module is used to control the actual value v of the DC side voltage of the grid-connected converter. dc Reach the DC side voltage setting 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 v of the grid converter dc The square of the value is multiplied by the voltage loop adjustment factor k2 to obtain the voltage adjustment parameter v tune .

11. A resource-aware converter network control system according to claim 10, 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 or according to the virtual inertia required by the application, specifically: When the DC side support capacitance value of the grid-connected converter is determined, the expression of the voltage loop adjustment factor k2 is: Among them, Δω min is the frequency range in which the grid converter inverter can work normally, Δv dcmax It is the maximum allowable variation range of the DC side voltage of the grid converter.

12. The resource-aware converter network control system according to claim 10, characterized in that: The parameter selection method of the voltage loop adjustment factor k2 is: select the parameter of the voltage loop adjustment factor k2 according to the virtual inertia required by the application. The expression of the voltage loop adjustment factor k2 is: Where C is the DC side support capacitance of the grid-connected converter, H is the virtual inertia, ω0 is the reference angular frequency of the grid-connected system, and P n It is the rated active power of the grid system.

13. The resource-aware converter network control system according to claim 1, characterized in that: 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 networking system to obtain the actual angular frequency ω of the networking system. Integrate the actual angular frequency ω of the networking system to obtain the potential phase θ in the networking system.

14. The resource-aware converter network control system according to claim 8, characterized in that: The reactive damping quantity 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.

15. 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 7 is implemented.

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