Energy storage converter adaptive ratio control method and system

Abstract

The present invention belongs to the field of new power system frequency regulation, and specifically relates to an energy storage converter adaptive ratio control method and system. The energy storage converter adaptive ratio control method provided by the present invention is suitable for auxiliary frequency regulation of energy storage converters, and adopts the optimal ratio adaptive adjustment according to the strength of the power grid, taking into account fast frequency response and inertia support control, and can adapt to access under various power grid strengths, ensuring that the frequency regulation effect of the energy storage converter is near the optimal state; it can achieve the optimal frequency regulation of the energy storage converter under the rated power capacity, and minimize the minimum value of the power grid frequency drop. The energy storage converter adaptive ratio control device, electronic device and computer-readable storage medium provided by the present invention also solve the problems raised in the background technology section.

Description

Technical Field

[0001] The present invention belongs to the field of novel power system frequency regulation, and in particular relates to an adaptive ratio control method and system for an energy storage converter. Background Art

[0002] With the progress of human society and the development of science and industry, global electricity demand is growing significantly. However, with the widespread exploitation of coal and oil, resources are becoming scarce, and traditional thermal power generation is unable to meet electricity demand for a long time. A variety of distributed renewable energy sources will gradually be connected to the grid to provide power, forming a new power system. This has the negative impact of renewable energy sources lacking the inertia of traditional thermal power generation. Power systems with a high proportion of renewable energy and high-power electronic devices have significantly reduced inertia, resulting in poor support for power generation systems and low frequency regulation capabilities. Therefore, breakthroughs in frequency regulation strategies for new power systems are urgently needed.

[0003] The main auxiliary frequency regulation methods for energy storage converters include PQ power control and virtual synchronous control. PQ control alone lacks inertia support and is unsuitable for scenarios where a high proportion of renewable energy is integrated and grid inertia is significantly reduced. Virtual synchronous control alone suffers from slow frequency response, leading to a high demand for energy storage capacity. Therefore, to simultaneously address the issues of poor inertia support and slow frequency response, breakthroughs in energy storage converter frequency regulation technology with both fast frequency response and inertia support are urgently needed. Summary of the Invention

[0004] The object of the present invention is to provide an energy storage converter adaptive ratio control method and system to solve the problems of poor inertia support and slow frequency response in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides an adaptive ratio control method for an energy storage converter, comprising the following steps:

[0007] Obtain the grid short circuit ratio SCR, and based on the grid short circuit ratio SCR, calculate the proportional coefficient k of the fast frequency response respectively FFR And the proportional coefficient k of virtual synchronous control VSG ;

[0008] Get the three-phase voltage v output by the converter gx And the converter output three-phase current i gx , and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q;

[0009] Based on the converter active power measurement value P and reactive power measurement value Q, the active power measurement value P corresponding to the fast frequency response control is calculated. FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ;

[0010] Based on the converter outputting three-phase current i gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ;

[0011] Determine the three-phase voltage v output by the converter gx The dq axis component V q and V d ;

[0012] Get the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ;

[0013] Set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0;

[0014] The fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q, as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ;

[0015] Get the actual value V of the inertia support controller voltage amplitude VSG , Inertia support controller voltage amplitude command value V VSG * ;

[0016] The inertia support control corresponds to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ;

[0017] Based on the fast frequency response control voltage instruction v FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command v REF * ;

[0018] Based on the total voltage command v REF * Generates a switch control signal for controlling the energy storage converter.

[0019] Furthermore, the proportional coefficient k of the fast frequency response FFR And the proportional coefficient k of virtual synchronous control VSG , calculated according to the following formula:

[0020]

[0021] Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, SCR is the grid short circuit ratio, k max , k0 are proportional constants; e and n represent natural numbers respectively.

[0022] Furthermore, the fast frequency response control method power matching value P FFR * , virtual synchronous motor control mode power matching value PVSG * The calculation is as follows:

[0023]

[0024] Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, P ref is the power command value.

[0025] Furthermore, the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG is calculated as follows:

[0026]

[0027] Among them, i gx Output three-phase current for the converter; i FFR 、i VSG are respectively the first current value of the adaptive ratio and the second current value of the adaptive ratio; k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

[0028] Furthermore, the total voltage command v REF * Calculation method:

[0029]

[0030] Among them, v REF * 、v FFR 、v VSG are the total voltage command, fast frequency response control voltage command and virtual synchronous control voltage command respectively; k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

[0031] Furthermore, the fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q, as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ,include:

[0032] The fast frequency response control mode power matching value P FFR * Active power measurement value P corresponding to fast frequency response control FFR The first difference is obtained by performing a difference operation, and the first difference is input into the first deadbeat controller to obtain the d-axis component Ud of the controller output voltage; the fast frequency response control corresponds to the reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR The second difference is obtained by performing a subtraction, and the second difference is input into the second deadbeat controller to obtain the controller output voltage q-axis component Uq; the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q The third difference is input into the third deadbeat controller to obtain the controller output angular velocity ω FFR ;

[0033] Perform inverse dq transformation on the controller output voltage d-axis component Ud and the controller output voltage q-axis component Uq to obtain the controller output voltage amplitude U * FFR ; The controller outputs angular velocity ω FFR Input into the integrator to get the controller output phase angle θ FFR ; Based on the controller output voltage amplitude U * FFR 、Controller output phase angle θ FFR Calculate the fast frequency response control voltage command v FFR ; in, is the initial phase angle of the power grid.

[0034] Furthermore, the inertia support control corresponds to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSGAs the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ,include:

[0035] The grid synchronization angular velocity ω0 and the controller output angular velocity ω VSG Make the difference and get the fourth difference, multiply the fourth difference by ω0D P Get the power decoupling value; the power matching value P of the virtual synchronous motor control mode VSG * It is superimposed with the power decoupling value and then combined with the active power measurement value P corresponding to the inertia support control. VSG Do the difference and get the fifth difference, send the fifth difference to the integral controller and get the controller output angular velocity ω VSG ; The controller outputs angular velocity ω VSG Send it to another integral controller to get the controller output phase angle θ VSG ;

[0036] The actual value of the inertia support controller voltage amplitude V VSG , Inertia support controller voltage amplitude command value V VSG * Do the difference to get the sixth difference, send the sixth difference to a proportional controller to get the proportional controller output value; add the proportional controller output value to the inertia support control corresponding reactive power reference value Q VSG * , and then the reactive power measurement value Q corresponding to the inertia support control VSG The seventh difference is obtained by subtracting the seventh difference and multiplying the seventh difference by the proportional constant to obtain the controller output voltage amplitude U * VSG ;

[0037] Based on the controller output voltage amplitude U * VSG 、Controller output phase angle θ VSG Calculate the virtual synchronous control voltage command v VSG ; in, is the initial phase angle of the power grid.

[0038] In a second aspect, the present invention provides an adaptive ratio control device for an energy storage converter, comprising:

[0039] The adjustment coefficient calculation module is used to obtain the grid short circuit ratio SCR and calculate the proportional coefficient k of the fast frequency response based on the grid short circuit ratio SCR. FFR And the proportional coefficient k of virtual synchronous control VSG ;

[0040] The first calculation module is used to obtain the three-phase voltage v output by the convertergx And the converter output three-phase current i gx , and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q;

[0041] The second calculation module is used to calculate the active power measurement value P corresponding to the fast frequency response control based on the converter active power measurement value P and reactive power measurement value Q. FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ;

[0042] The third calculation module is used to output the three-phase current i based on the converter. gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ;

[0043] The fourth calculation module is used to determine the output three-phase voltage v of the converter gx The dq axis component V q and V d ;

[0044] The fifth calculation module is used to obtain the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ;

[0045] Setting module, used to set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0;

[0046] The first instruction generation module is used to set the fast frequency response control mode power matching value P FFR* , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ;

[0047] Data acquisition module, used to obtain the actual value V of the inertia support controller voltage amplitude VSG , Inertia support controller voltage amplitude command value V VSG * ;

[0048] The second instruction generation module is used to control the inertia support corresponding to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ;

[0049] The sixth calculation module is used to control the voltage instruction v based on the fast frequency response. FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command V REF * ;

[0050] A control signal generating module is used to generate a signal based on the total voltage instruction V REF Generates a switch control signal for controlling the energy storage converter.

[0051] According to a third aspect of the present invention, an electronic device is provided, comprising a processor and a memory, wherein the processor is configured to execute a computer program stored in the memory to implement the above-mentioned adaptive ratio control method for an energy storage converter.

[0052] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores at least one instruction, and when the at least one instruction is executed by a processor, the adaptive ratio control method of the energy storage converter as described above is implemented.

[0053] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0054] The energy storage converter adaptive ratio control method provided by the present invention is suitable for auxiliary frequency regulation of energy storage converters. It uses adaptive adjustment of the optimal ratio according to the strength of the power grid, taking into account both fast frequency response and inertia support control. It can adapt to access under various power grid strengths and ensure that the frequency regulation effect of the energy storage converter is close to the optimal state. It can achieve optimal frequency regulation of the energy storage converter under the rated power capacity and minimize the minimum value of the power grid frequency drop. It not only improves the frequency response speed, but also enhances the inertia support capacity of the system. The energy storage converter adaptive ratio control device, electronic device and computer-readable storage medium provided by the present invention also solve the problems raised in the background technology section.

[0055] In the present invention, the proportional coefficient k of the fast frequency response FFR And the proportional coefficient k of virtual synchronous control VSG , the logistic curve is adopted, which can smoothly switch the k value ratio parameter and avoid jumping between different control modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0057] Figure 1 This is an overall structural diagram of the fast frequency response and adaptive ratio control of the virtual synchronous machine in an embodiment of the present invention;

[0058] Figure 2 This is a diagram showing the relationship between the grid strength SCR and the adaptive adjustment ratio parameters according to an embodiment of the present invention;

[0059] Figure 3 This is a block diagram of an adaptive ratio control integrating fast frequency response and virtual synchronization according to an embodiment of the present invention;

[0060] Figure 4 This is a structural block diagram of an adaptive ratio control device for an energy storage converter according to an embodiment of the present invention;

[0061] Figure 5 This is a structural block diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0062] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0063] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise indicated, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0064] Example 1

[0065] An embodiment of the present invention provides an adaptive ratio control method for an energy storage converter suitable for auxiliary frequency regulation. The adaptive ratio control method takes into account both fast frequency response and inertia support control, can achieve optimal frequency regulation of the energy storage converter at rated power capacity, and minimize the minimum value of the grid frequency drop.

[0066] like Figures 1 to 3 As shown, a method for adaptive ratio control of an energy storage converter includes the following specific steps:

[0067] S1. Obtain the grid short circuit ratio SCR, and calculate the proportional coefficient k of the fast frequency response based on the grid short circuit ratio SCR. FFR And the proportional coefficient k of virtual synchronous control VSG ;

[0068] Specifically, the proportional coefficient k of the fast frequency response FFR And the proportional coefficient k of virtual synchronous control VSG , calculated according to the following formula:

[0069]

[0070] Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, SCR is the grid short circuit ratio, k max , k0 are proportional constants; e and n represent natural numbers respectively.

[0071] S2, obtain the three-phase voltage v output by the converter gx And the converter output three-phase current i gx , and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q;

[0072] like Figure 1As shown in FIG, this solution collects the three-phase voltage and current output by the energy storage converter to calculate the reactive power Q and active power P.

[0073] S3. Based on the converter active power measurement value P and reactive power measurement value Q, calculate the active power measurement value P corresponding to the fast frequency response control FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ;

[0074] Optionally, the fast frequency response control corresponds to the active power measurement value P FFR , Inertia support control corresponding active power measurement value P VSG To calculate the active power of the converter, multiply the measured value P by the corresponding proportional coefficient, as follows:

[0075]

[0076] Optionally, the fast frequency response control corresponds to the reactive power measurement value Q FFR , inertia support control corresponding reactive power measurement value Q VSG To calculate the reactive power, you can multiply the reactive power measurement value Q by the corresponding proportional coefficient as follows:

[0077]

[0078]

[0079] S4, based on the converter output three-phase current i gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ;

[0080] Specifically, the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG is calculated as follows:

[0081]

[0082] Among them, i gx Output three-phase current for the converter; i FFR 、i VSG are respectively the first current value of the adaptive ratio and the second current value of the adaptive ratio; k FFR、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

[0083] S5, determine the converter output three-phase voltage v gx The dq axis component V q and V d ;

[0084] Optionally, the converter can output a three-phase voltage v gx Perform dq transformation to obtain the required dq axis component V q and V d .

[0085] S6. Obtaining the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ;

[0086] Specifically, the power matching value P of the fast frequency response control method FFR * , virtual synchronous motor control mode power matching value P VSG * The calculation is as follows:

[0087]

[0088] Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, P ref is the power command value.

[0089] S7, set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0;

[0090] S8, the fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR *, fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ;

[0091] Specifically, such as Figure 3 As shown, S8 includes the following steps:

[0092] The fast frequency response control mode power matching value P FFR * Active power measurement value P corresponding to fast frequency response control FFR The first difference is obtained by performing a difference operation, and the first difference is input into the first deadbeat controller to obtain the d-axis component Ud of the controller output voltage; the fast frequency response control corresponds to the reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR The second difference is obtained by performing a subtraction, and the second difference is input into the second deadbeat controller to obtain the controller output voltage q-axis component Uq; the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q The third difference is input into the third deadbeat controller to obtain the controller output angular velocity ω FFR ;

[0093] Perform inverse dq transformation on the controller output voltage d-axis component Ud and the controller output voltage q-axis component Uq to obtain the controller output voltage amplitude U * FFR ; The controller outputs angular velocity ω FFR Input into the integrator to get the controller output phase angle θ FFR ; Based on the controller output voltage amplitude U * FFR 、Controller output phase angle θ FFR Calculate the fast frequency response control voltage command v FFR ; in, is the initial phase angle of the power grid.

[0094] S9. Get the actual value V of the voltage amplitude of the inertia support controller VSG , Inertia support controller voltage amplitude command value V VSG * ;

[0095] S10, the inertia support control corresponding active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ;

[0096] Specifically, such as Figure 3 As shown, S10 includes the following specific steps:

[0097] The grid synchronization angular velocity ω0 and the controller output angular velocity ω VSG Make the difference and get the fourth difference, multiply the fourth difference by ω0D P Get the power decoupling value; the power matching value P of the virtual synchronous motor control mode VSG * It is superimposed with the power decoupling value and then combined with the active power measurement value P corresponding to the inertia support control. VSG Do the difference and get the fifth difference, send the fifth difference to the integral controller and get the controller output angular velocity ω VSG ; The controller outputs angular velocity ω VSG Send it to another integral controller to get the controller output phase angle θ VSG ;

[0098] The actual value of the inertia support controller voltage amplitude V VSG , Inertia support controller voltage amplitude command value V VSG * Do the difference to get the sixth difference, send the sixth difference to a proportional controller to get the proportional controller output value; add the proportional controller output value to the inertia support control corresponding reactive power reference value Q VSG * , and then the reactive power measurement value Q corresponding to the inertia support control VSG The seventh difference is obtained by subtracting the seventh difference and multiplying the seventh difference by the proportional constant to obtain the controller output voltage amplitude U * VSG ;

[0099] Based on the controller output voltage amplitude U * VSG 、Controller output phase angle θ VSGCalculate the virtual synchronous control voltage command v VSG ; in, is the initial phase angle of the power grid.

[0100] S11, based on the fast frequency response control voltage instruction v FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command v REF * ;

[0101] Specifically, the total voltage command v REF * Calculation method:

[0102]

[0103] Among them, v REF * 、v FFR 、v VSG are the total voltage command, fast frequency response control voltage command and virtual synchronous control voltage command respectively; k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

[0104] S12, based on the total voltage instruction v REF * Generates a switch control signal for controlling the energy storage converter.

[0105] In an optional embodiment, a method for adaptive ratio control of an energy storage converter is further provided. The method is based on a k-value adaptive adjustment module, an adaptive ratio control unit suitable for frequency modulation conditions, a fast frequency response control unit, and an inertia support control unit, and specifically includes the following steps:

[0106] (1) k value-adaptive adjustment module

[0107] According to the SCR parameter index of the power grid strength, the ratio of fast frequency response control and virtual synchronous machine control is adaptively adjusted. The present invention ensures that the fast frequency control method is used as much as possible under strong power grids, the virtual synchronous machine control method is used as much as possible under weak power grids, and the optimal ratio control method is used when the power grid strength is moderate.

[0108] At the same time, in order to achieve smooth switching, this solution adopts the k value adaptive change module. The specific function of this module is to achieve adaptive change, as shown in formula (1). The logistic curve is used. The curve is as follows Figure 2 shown.

[0109]

[0110] Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, SCR is the grid short circuit ratio, k max , k0 are proportional constants; e and n represent natural numbers respectively.

[0111] (2) Adaptive ratio control unit suitable for frequency modulation conditions

[0112] In order to achieve fast frequency response and optimal ratio control of virtual synchronous machines, the present invention designs two adaptive ratio control modules, as follows:

[0113] The function of the adaptive ratio control module 1 of the present invention is to adaptively distribute the fast frequency response with the power and current of the virtual synchronous motor, as shown in formula (2) to formula (5):

[0114]

[0115] Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, P ref is the power command value. gx Output three-phase current for the converter; i FFR 、i VSG are respectively the first current value of the adaptive ratio and the second current value of the adaptive ratio; k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

[0116] The function of the adaptive ratio control module 2 of the present invention is to convert the current output to the grid side into the measured value of the fast frequency response and the virtual synchronous motor according to the ratio, as shown in formula (6):

[0117]

[0118] Among them, v REF * 、v FFR * 、v VSG * They are the total voltage command, fast frequency response control voltage command and virtual synchronous control voltage command. FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

[0119] (3) Fast frequency response control unit

[0120] The fast frequency response control unit of the present invention regulates voltage through active power and reactive power, and adjusts frequency through the q-axis voltage component. Each sub-control unit completes voltage and frequency control through deadbeat. Since the control has no inertia lag characteristics and fast response speed, it can achieve fast frequency response. The specific control flow chart can be seen Figure 3 shown.

[0121] (4) Inertia support control unit

[0122] In order to adapt to the working conditions of high proportion of new energy access to weak power grid, the present invention also provides an inertia support control method, which simulates the synchronous machine, adjusts the frequency by active power, and adjusts the voltage by reactive power. The relevant control block diagram is shown as follows: Figure 3 shown.

[0123] This solution is applicable to the energy storage converter auxiliary frequency regulation condition when new energy is connected to the power grid. It specifically includes the energy storage converter power module and the energy storage converter adaptive ratio controller suitable for frequency regulation condition.

[0124] Optionally, all modules can be integrated within the controller, including the k-value adaptive adjustment control module, adaptive ratio control modules 1 and 2, the fast frequency response control unit, and the virtual synchronous machine control unit. The k-value adaptive adjustment control module in this solution uses a logistic curve to achieve smooth switching of the k value with the SCR parameters.

[0125] This solution uses an adaptive ratio control module to obtain the input and output values ​​of the fast frequency response control unit and the virtual inertia control unit respectively. The fast frequency response control unit adjusts the voltage through active power and reactive power, and adjusts the frequency through the q-axis voltage component. Each sub-control unit completes voltage and frequency control through zero beat. The inertia support control method adjusts the frequency through active power and the voltage through reactive power.

[0126] Example 2

[0127] like Figure 4 As shown, based on the same inventive concept as the above embodiment, the present invention further provides 8. An adaptive ratio control device for an energy storage converter, characterized in that it includes:

[0128] The adjustment coefficient calculation module is used to obtain the grid short circuit ratio SCR and calculate the proportional coefficient k of the fast frequency response based on the grid short circuit ratio SCR. FFR And the proportional coefficient k of virtual synchronous control VSG ;

[0129] The first calculation module is used to obtain the three-phase voltage v output by the converter gx And the converter output three-phase current i gx, and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q;

[0130] The second calculation module is used to calculate the active power measurement value P corresponding to the fast frequency response control based on the converter active power measurement value P and reactive power measurement value Q. FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ;

[0131] The third calculation module is used to output the three-phase current i based on the converter. gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ;

[0132] The fourth calculation module is used to determine the output three-phase voltage v of the converter gx The dq axis component V q and V d ;

[0133] The fifth calculation module is used to obtain the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ;

[0134] Setting module, used to set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0;

[0135] The first instruction generation module is used to set the fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value PFFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ;

[0136] Data acquisition module, used to obtain the actual value V of the inertia support controller voltage amplitude VSG , Inertia support controller voltage amplitude command value V VSG * ;

[0137] The second instruction generation module is used to control the inertia support corresponding to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ;

[0138] The sixth calculation module is used to control the voltage instruction v based on the fast frequency response. FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command V REF * ;

[0139] A control signal generating module is used to generate a signal based on the total voltage instruction V REF Generates a switch control signal for controlling the energy storage converter.

[0140] Example 3

[0141] like Figure 5As shown, the present invention also provides an electronic device 100 for implementing an adaptive ratio control method for an energy storage converter in Example 1; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on at least one processor 102, and at least one communication bus 104.

[0142] The memory 101 can be used to store a computer program 103. The processor 102 implements the steps of the energy storage converter adaptive ratio control method in Example 1 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101.

[0143] The memory 101 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data (such as audio data) created according to the use of the electronic device 100. In addition, the memory 101 may include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0144] The at least one processor 102 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100 and connects various parts of the entire electronic device 100 using various interfaces and lines.

[0145] The memory 101 in the electronic device 100 stores multiple instructions to implement an adaptive ratio control method for an energy storage converter. The processor 102 can execute the multiple instructions to implement:

[0146] Obtain the grid short circuit ratio SCR, and based on the grid short circuit ratio SCR, calculate the proportional coefficient k of the fast frequency response respectivelyFFR And the proportional coefficient k of virtual synchronous control VSG ;

[0147] Get the three-phase voltage v output by the converter gx And the converter output three-phase current i gx , and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q;

[0148] Based on the converter active power measurement value P and reactive power measurement value Q, the active power measurement value P corresponding to the fast frequency response control is calculated. FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ;

[0149] Based on the converter outputting three-phase current i gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ;

[0150] Determine the three-phase voltage v output by the converter gx The dq axis component V q and V d ;

[0151] Get the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ;

[0152] Set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0;

[0153] The fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ;

[0154] Get the actual value V of the inertia support controller voltage amplitude VSG , Inertia support controller voltage amplitude command value V VSG * ;

[0155] The inertia support control corresponds to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ;

[0156] Based on the fast frequency response control voltage instruction v FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command v REF * ;

[0157] Based on the total voltage command v REF * Generates a switch control signal for controlling the energy storage converter.

[0158] Example 4

[0159] If the module / unit integrated in the electronic device 100 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. Computer-readable media may include: any entity or device that can carry computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory and read-only memory (ROM, Read-Only Memory).

[0160] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0161] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0162] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0163] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0164] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for adaptive ratio control of an energy storage converter, characterized in that: The steps include: Obtain the grid short circuit ratio SCR, and based on the grid short circuit ratio SCR, calculate the proportional coefficient k of the fast frequency response respectively FFR And the proportional coefficient k of virtual synchronous control VSG ; Get the three-phase voltage v output by the converter gx And the converter output three-phase current i gx , and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q; Based on the converter active power measurement value P and reactive power measurement value Q, the active power measurement value P corresponding to the fast frequency response control is calculated. FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ; Based on the converter outputting three-phase current i gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ; Determine the three-phase voltage v output by the converter gx The dq axis component V q and V d ; Get the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ; Set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0; The fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ; Get the actual value V of the inertia support controller voltage amplitude VSG , Inertia support controller voltage amplitude command value V VSG * ; The inertia support control corresponds to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ; Based on the fast frequency response control voltage instruction v FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command v REF * ; Based on the total voltage command v REF * Generates a switch control signal for controlling the energy storage converter.

2. The energy storage converter adaptive ratio control method according to claim 1, characterized in that: The proportional coefficient k of the fast frequency response FFR And the proportional coefficient k of virtual synchronous control VSG , calculated according to the following formula: Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, SCR is the grid short circuit ratio, k max , k0 are proportional constants; e and n represent natural numbers respectively.

3. The energy storage converter adaptive ratio control method according to claim 1, characterized in that: Fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * The calculation is as follows: Among them, k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control, P ref is the power command value.

4. The energy storage converter adaptive ratio control method according to claim 1, characterized in that: Adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG is calculated as follows: Among them, i gx Output three-phase current for the converter; i FFR 、i VSG are respectively the first current value of the adaptive ratio and the second current value of the adaptive ratio; k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

5. The energy storage converter adaptive ratio control method according to claim 1, characterized in that: Total voltage command v REF * Calculation method: Among them, v REF * 、v FFR 、v VSG are the total voltage command, fast frequency response control voltage command and virtual synchronous control voltage command respectively; k FFR 、k VSG are the proportional coefficients of fast frequency response and virtual synchronous control respectively.

6. The energy storage converter adaptive ratio control method according to claim 1, characterized in that: The fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ,include: The fast frequency response control mode power matching value P FFR * Active power measurement value P corresponding to fast frequency response control FFR The first difference is obtained by performing a difference operation, and the first difference is input into the first deadbeat controller to obtain the controller output voltage d-axis component Ud; the fast frequency response control corresponds to the reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR The second difference is obtained by performing a subtraction, and the second difference is input into the second deadbeat controller to obtain the controller output voltage q-axis component Uq; the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q The third difference is input into the third deadbeat controller to obtain the controller output angular velocity ω FFR ; Perform inverse dq transformation on the controller output voltage d-axis component Ud and the controller output voltage q-axis component Uq to obtain the controller output voltage amplitude U * FFR ; The controller outputs angular velocity ω FFR Input into the integrator to get the controller output phase angle θ FFR ; Based on the controller output voltage amplitude U * FFR 、Controller output phase angle θ FFR Calculate the fast frequency response control voltage command v FFR ; in, is the initial phase angle of the power grid.

7. The energy storage converter adaptive ratio control method according to claim 1, characterized in that: The inertia support control corresponds to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ,include: The grid synchronization angular velocity ω0 and the controller output angular velocity ω VSG Make the difference and get the fourth difference, multiply the fourth difference by ω0D P Get the power decoupling value; the power matching value P of the virtual synchronous motor control mode VSG * It is superimposed with the power decoupling value and then combined with the active power measurement value P corresponding to the inertia support control. VSG Do the difference and get the fifth difference, send the fifth difference to the integral controller and get the controller output angular velocity ω VSG ; The controller outputs angular velocity ω VSG Send it to another integral controller to get the controller output phase angle θ VSG ; The actual value of the inertia support controller voltage amplitude V VSG , Inertia support controller voltage amplitude command value V VSG * Do the difference to get the sixth difference, send the sixth difference to a proportional controller to get the proportional controller output value; add the proportional controller output value to the inertia support control corresponding reactive power reference value Q VSG * , and then the reactive power measurement value Q corresponding to the inertia support control VSG The seventh difference is obtained by subtracting the seventh difference and multiplying the seventh difference by the proportional constant to obtain the controller output voltage amplitude U * VSG ; Based on the controller output voltage amplitude U * VSG 、Controller output phase angle θ VSG Calculate the virtual synchronous control voltage command v VSG ; in, is the initial phase angle of the power grid.

8. An adaptive ratio control device for an energy storage converter, characterized in that: include: The adjustment coefficient calculation module is used to obtain the grid short circuit ratio SCR and calculate the proportional coefficient k of the fast frequency response based on the grid short circuit ratio SCR. FFR And the proportional coefficient k of virtual synchronous control VSG ; The first calculation module is used to obtain the three-phase voltage v output by the converter gx And the converter output three-phase current i gx , and according to the converter output three-phase voltage v gx And the converter output three-phase current i gx Calculate and obtain the converter active power measurement value P and reactive power measurement value Q; The second calculation module is used to calculate the active power measurement value P corresponding to the fast frequency response control based on the converter active power measurement value P and reactive power measurement value Q. FFR , Inertia support control corresponding active power measurement value P VSG ; and calculate the reactive power measurement value Q corresponding to the fast frequency response control FFR , inertia support control corresponding reactive power measurement value Q VSG ; The third calculation module is used to output the three-phase current i based on the converter. gx , and the proportional coefficient k of the fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , calculate the adaptive ratio first current value i FFR and the adaptive ratio second current value i VSG ; The fourth calculation module is used to determine the output three-phase voltage v of the converter gx The dq axis component V q and V d ; The fifth calculation module is used to obtain the total power command value P ref Based on the total power command value P ref , and the proportional coefficient k for fast frequency response FFR , the proportional coefficient k of virtual synchronous control VSG , respectively calculate the fast frequency response control mode power matching value P FFR * , virtual synchronous motor control mode power matching value P VSG * ; Setting module, used to set the fast frequency response control corresponding reactive power reference value Q FFR * , Inertia support control corresponding reactive power reference value Q VSG * All are 0; The first instruction generation module is used to set the fast frequency response control mode power matching value P FFR * , fast frequency response control corresponding active power measurement value P FFR , fast frequency response control corresponding reactive power reference value Q FFR * , fast frequency response control corresponding to reactive power measurement value Q FFR , and the converter output three-phase voltage q-axis reference value V q * , the q-axis component of the converter output three-phase voltage V q , as the input of the fast frequency response control link, the fast frequency response control voltage instruction v FFR ; Data acquisition module, used to obtain the actual value V of the inertia support controller voltage amplitude VSG , Inertia support controller voltage amplitude command value V VSG * ; The second instruction generation module is used to control the inertia support corresponding to the active power measurement value P VSG , the power matching value P of the virtual synchronous motor control method VSG * , Actual value of voltage amplitude of inertia support controller V VSG , Inertia support controller voltage amplitude command value V VSG * , as well as the grid synchronization angular velocity ω0, the reactive power reference value Q corresponding to the inertia support control VSG * , inertia support control corresponding reactive power measurement value Q VSG As the input of the inertia support control link, the virtual synchronous control voltage command v is obtained VSG ; The sixth calculation module is used to control the voltage instruction v based on the fast frequency response. FFR , virtual synchronous control voltage instruction v VSG Calculate the total voltage command V REF * ; A control signal generating module is used to generate a signal based on the total voltage instruction V REF Generates a switch control signal for controlling the energy storage converter.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the processor is used to execute a computer program stored in the memory to implement the energy storage converter adaptive ratio control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores at least one instruction, and when the at least one instruction is executed by a processor, the energy storage converter adaptive ratio control method according to any one of claims 1 to 7 is implemented.

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