Dynamic parameter optimization method and device containing primary frequency modulation dead zone, medium and equipment

Abstract

The invention provides a primary frequency modulation dead zone-containing dynamic parameter optimization method and device, a medium and equipment, and relates to the technical field of new energy grid-connected primary frequency modulation, and the method comprises the steps: determining frequency deviation time domain solutions of ordinary and step frequency modulation dead zones; for an ordinary frequency modulation dead zone, calculating a first moment of the lowest point of the frequency, and obtaining a first maximum frequency deviation and a first steady-state frequency according to the first moment; for a step-type frequency modulation dead zone, a second moment of the lowest point of the frequency is also calculated, and then a second maximum frequency deviation and a second steady-state frequency are obtained; determining a frequency modulation correction coefficient by comparing the maximum frequency deviations of the two; and finally, adjusting the first maximum frequency deviation and the first steady-state frequency of the ordinary frequency modulation dead zone by using the coefficient so as to complete parameter adjustment. According to the embodiment of the invention, the challenge on the frequency stability of the power grid system caused by a large number of new energy grid connection is perfected, the frequency deviation after disturbance of new energy grid connection is reduced, and the stability of the power system is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of primary frequency regulation for grid-connected new energy, and in particular to a method, device, medium and equipment for optimizing dynamic parameters including a primary frequency regulation dead zone. Background Art

[0002] With the large-scale grid connection of renewable energy sources such as wind power and photovoltaics and the application of energy storage systems, the operating environment of the power system has changed significantly. Traditional thermal power units play an important role in maintaining the stability of the grid frequency with their mechanical inertia and rapid response capabilities. However, with the increase in the proportion of new energy, especially after power stations dominated by power electronic equipment such as wind power and photovoltaics are connected to the grid, the inertia of the grid has dropped significantly, and the frequency regulation capability of traditional thermal power units can no longer meet the grid's demand for primary frequency regulation. The stability of the grid frequency depends on the system's rapid response to frequency fluctuations, and new energy power stations cannot sense and adjust the frequency instantly like traditional units due to their lack of inertia. Therefore, new energy power stations and traditional thermal power units need to work together to jointly undertake the task of primary frequency regulation of the grid.

[0003] At present, many studies have been conducted at home and abroad on the participation of renewable energy in primary frequency regulation of power grids. my country has made detailed provisions for the frequency regulation parameters and dynamic performance indicators of various energy units. However, for power systems with a high proportion of renewable energy penetration, there are still certain differences in the existing frequency regulation dead zone parameter settings, and there is no clear regulation on the order in which various renewable energy units participate in primary frequency regulation. In previous simulation studies, it is usually assumed that the dead zone parameters of all renewable energy units are the same or idealized empirical values ​​are used, ignoring the different effects that renewable energy units in different dead zones may have on the frequency stability of the power system. Such simplified assumptions cannot accurately reflect the actual situation, which may lead to inaccurate evaluation of the effect of power system frequency control, thereby affecting the safe and stable operation of the power grid. Summary of the invention

[0004] The embodiments of the present disclosure at least provide a method, device, medium and equipment for dynamic parameter optimization including a primary frequency modulation dead zone, which calculates the frequency modulation correction coefficient according to the maximum frequency deviation and steady-state frequency of different frequency modulation dead zones, and adjusts the parameters of the common frequency modulation dead zone accordingly, thereby optimizing the performance of the frequency modulation dead zone, helping to reduce the frequency deviation after a disturbance occurs in the new energy grid connection, improving the frequency safety of the new energy grid connection system, ensuring the primary frequency modulation effect of the system, and improving the stability of the power system.

[0005] The embodiment of the present disclosure provides a method for optimizing dynamic parameters including a primary frequency modulation dead zone, including:

[0006] Determine the time domain solution of frequency deviation in common frequency modulation dead zone and the time domain solution of frequency deviation in step frequency modulation dead zone;

[0007] Calculate a first moment value corresponding to the lowest frequency point in the common type FM dead zone according to the frequency deviation time domain solution of the common type FM dead zone, determine a first maximum frequency deviation value according to the frequency deviation time domain solution of the common type FM dead zone and the first moment value, and determine a first steady-state frequency value according to the frequency deviation time domain solution of the common type FM dead zone and the first moment value;

[0008] Calculate a second moment value corresponding to the lowest frequency point in the step-type frequency modulation dead zone according to the time-domain solution of the frequency deviation in the step-type frequency modulation dead zone, determine a second maximum frequency deviation value according to the time-domain solution of the frequency deviation in the step-type frequency modulation dead zone and the second moment value, and determine a second steady-state frequency value according to the time-domain solution of the frequency deviation in the step-type frequency modulation dead zone and the second moment value;

[0009] A frequency modulation correction coefficient is determined according to the first maximum frequency deviation value and the second maximum frequency deviation value; and parameters of the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone are adjusted based on the frequency modulation correction coefficient.

[0010] The embodiment of the present disclosure provides a dynamic parameter optimization device including a primary frequency modulation dead zone, comprising:

[0011] A time domain solution determination module, used to determine a time domain solution of a frequency deviation in a common frequency modulation dead zone and a time domain solution of a frequency deviation in a step frequency modulation dead zone;

[0012] A common frequency modulation dead zone solving module, used for calculating a first moment value corresponding to the lowest frequency point in the common frequency modulation dead zone according to a frequency deviation time domain solution of the common frequency modulation dead zone, and determining a first maximum frequency deviation value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value, and determining a first steady-state frequency value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value;

[0013] A step frequency modulation dead zone solving module, used for calculating a second time value corresponding to the lowest frequency point in the step frequency modulation dead zone according to a time domain solution of the frequency deviation of the step frequency modulation dead zone, and determining a second maximum frequency deviation value according to the time domain solution of the frequency deviation of the step frequency modulation dead zone and the second time value, and determining a second steady-state frequency value according to the time domain solution of the frequency deviation of the step frequency modulation dead zone and the second time value;

[0014] A frequency modulation correction coefficient determination module is used to determine the frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value; based on the frequency modulation correction coefficient, the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone are respectively adjusted.

[0015] An embodiment of the present disclosure provides a computer device, including: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the computer device is running, the processor communicates with the memory via the bus, and when the machine-readable instructions are executed by the processor, a dynamic parameter optimization method containing a primary frequency modulation dead zone as described in any possible implementation manner described above is performed.

[0016] An embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for optimizing dynamic parameters including a primary frequency modulation dead zone as described in any possible implementation manner described above is implemented.

[0017] The dynamic parameter optimization method, device, medium and equipment including the primary frequency modulation dead zone provided in the embodiments of the present disclosure first determine the time domain solutions of the frequency deviation of the common frequency modulation dead zone and the step frequency modulation dead zone respectively, and calculate the maximum frequency deviation and steady-state frequency of different frequency modulation dead zones accordingly, so as to more accurately reflect the influence of different dead zone settings on the frequency stability of the power system; then, the frequency modulation correction coefficient is calculated according to the maximum frequency deviation and steady-state frequency of different frequency modulation dead zones, and the parameters of the common frequency modulation dead zone are adjusted accordingly, so as to optimize the performance of the frequency modulation dead zone, help reduce the frequency deviation after the disturbance occurs when the new energy grid is connected, improve the safety of the frequency of the new energy grid-connected system, ensure the primary frequency modulation effect of the system, and improve the stability of the power system.

[0018] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required to be cited in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used together with the specification to illustrate the technical solutions of the present disclosure. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A flow chart of a method for optimizing dynamic parameters including a primary frequency modulation dead zone provided by an embodiment of the present disclosure is shown;

[0021] Figure 2 A flow chart of a method for determining a time domain solution of a frequency deviation provided by an embodiment of the present disclosure is shown;

[0022] Figure 3 A schematic diagram showing a method for constructing a primary frequency modulation dead zone target analytical expression provided by an embodiment of the present disclosure is shown;

[0023] Figure 4 A structural schematic diagram of a dynamic parameter optimization device including a primary frequency modulation dead zone provided by an embodiment of the present disclosure is shown;

[0024] Figure 5 A schematic diagram of the structure of a computer device provided by an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the present disclosure for protection, but merely represents the selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] The term "and / or" herein only describes an association relationship, indicating that three relationships may exist. For example, A and / or B may represent the following three situations: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C may represent including any one or more elements selected from the set consisting of A, B, and C.

[0028] With the widespread access to renewable energy such as wind power and photovoltaics and the application of energy storage technology, the operating environment of the power system has changed significantly. Traditional thermal power units play a vital role in maintaining the stability of the grid frequency due to their mechanical inertia and rapid response characteristics. However, with the increasing proportion of renewable energy, especially power stations dominated by power electronic equipment such as wind power and photovoltaics have gradually become an important part of the power grid, the inertia of the power grid has been significantly reduced. This makes the frequency regulation capacity of traditional thermal power units no longer sufficient to meet the grid's demand for primary frequency regulation.

[0029] The stability of the grid frequency requires the system to be able to respond quickly to frequency fluctuations, but new energy power stations cannot respond and adjust the frequency instantly like traditional thermal power units due to their lack of mechanical inertia. Therefore, new energy power stations and traditional thermal power units must work together to jointly undertake the task of primary frequency regulation of the grid.

[0030] According to research, a large number of studies have been carried out at home and abroad to explore how new energy can participate in the primary frequency regulation of the power grid. my country has also made detailed provisions for the frequency regulation parameters and dynamic performance indicators of different types of power units. However, for power systems with a high proportion of new energy penetration, there are still certain differences in the existing frequency regulation dead zone parameter settings, and the priority of various types of new energy units participating in primary frequency regulation has not yet been clearly specified. In past simulation studies, it is usually assumed that the dead zone parameters of all new energy units are the same, or idealized empirical values ​​are used, ignoring the different effects of different dead zone settings on the frequency stability of the power system. Such simplified assumptions may not accurately reflect the actual situation, resulting in an inaccurate evaluation of the frequency control effect of the power system, affecting the safe and stable operation of the power grid.

[0031] Based on the above research, a dynamic parameter optimization method, device, medium and equipment containing a primary frequency modulation dead zone are provided in the embodiments of the present disclosure. First, by respectively determining the time domain solutions of the frequency deviation of the common frequency modulation dead zone and the step frequency modulation dead zone, and calculating the maximum frequency deviation and steady-state frequency of different frequency modulation dead zones, the influence of different dead zone settings on the frequency stability of the power system is more accurately reflected; then, the frequency modulation correction coefficient is calculated according to the maximum frequency deviation and steady-state frequency of different frequency modulation dead zones, and the parameters of the common frequency modulation dead zone are adjusted accordingly, thereby optimizing the performance of the frequency modulation dead zone. This application improves the challenges of the frequency stability of the power grid system brought about by the grid connection of a large number of new energy sources, helps to reduce the frequency deviation after the disturbance of the grid connection of new energy sources, and improves the stability of the power system. The participation of new energy sources such as wind, solar and storage in the primary frequency modulation not only improves the frequency stability and operation efficiency of the power grid, but also supports the stability and economy of electricity consumption on the load side and the user side, and promotes the development of the power system towards a more efficient, low-carbon and intelligent direction.

[0032] To facilitate understanding of this embodiment, the execution subject of the dynamic parameter optimization method containing a primary frequency modulation dead zone provided by the embodiment of the present disclosure is first introduced in detail. The execution subject of the dynamic parameter optimization method containing a primary frequency modulation dead zone provided by the embodiment of the present disclosure is a computer device. The computer device can be a server. Among them, the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud storage, big data and artificial intelligence platforms.

[0033] The following is a detailed description of the dynamic parameter optimization method including a primary frequency modulation dead zone provided by the embodiment of the present application in conjunction with the accompanying drawings. Figure 1 As shown, it is a flow chart of a method for optimizing dynamic parameters including a primary frequency modulation dead zone provided by an embodiment of the present disclosure, and the method includes the following S101 to S104:

[0034] S101, determining a time-domain solution for a frequency deviation in a common frequency modulation dead zone and a time-domain solution for a frequency deviation in a step frequency modulation dead zone.

[0035] It can be understood that the FM dead zone refers to the area in the FM system where the receiving device cannot accurately respond to the frequency change of the input signal to a certain extent. Among them, the ordinary FM dead zone refers to the frequency deviation caused by the input signal change in the FM system, which will not be effectively demodulated by the receiving device within a certain range. Such dead zones usually show linear or gently changing frequency deviations, resulting in smooth or relatively slow changes in signal frequency. The step FM dead zone refers to the "step" change in the response of the receiving device to the frequency when the frequency of the signal in the FM system changes suddenly, resulting in large demodulation errors or distortion near certain frequency points.

[0036] Specifically, for the common frequency modulation dead zone, the specific expression for calculating the relationship between the frequency deviation and the output is:

[0037]

[0038] For the step frequency modulation dead zone, the specific expression for calculating the relationship between frequency deviation and output is:

[0039]

[0040] Among them, Δf(t) represents the system frequency deviation; f(t) represents the output after the dead zone; d is the primary frequency modulation dead zone.

[0041] Here, according to the specific expressions of the relationship between the frequency deviation and the output corresponding to the above-mentioned ordinary FM dead zone and the step FM dead zone, it can be known that when the frequency crosses the dead zone, the output of the ordinary dead zone remains continuous, while the output of the step dead zone will undergo a step mutation.

[0042] It is understandable that, referring to Figure 2 As shown, when determining the frequency deviation time domain solution of the common frequency modulation dead zone and the frequency deviation time domain solution of the step frequency modulation dead zone, the following steps S201 to S204 are included:

[0043] S201, construct a frequency response analytical formula group including the dead zone of primary frequency modulation of new energy.

[0044] It can be understood that the dead zone of primary frequency regulation of new energy refers to a frequency variation range (i.e., the dead zone of primary frequency regulation) set due to technical limitations or economic considerations when new energy power generation equipment (such as wind turbines, photovoltaic units, and battery energy storage systems) participates in the primary frequency regulation of the power grid. Within this range, the new energy power generation equipment does not respond or responds to frequency changes to a limited extent, so as to avoid the impact of frequent adjustments on the life of the equipment or unnecessary energy loss. Specifically, the frequency response analytical expression group includes the expression of the primary frequency regulation output power of the wind turbine, the expression of the primary frequency regulation output power of the photovoltaic unit, and the expression of the primary frequency regulation output power of the battery energy storage group.

[0045] Among them, the expression of the primary frequency modulation output power of the wind turbine includes:

[0046] ΔP s (t) = -βK s f s (t);

[0047] Among them, ΔP w (t) represents the primary frequency modulation output power of the wind turbine; α represents the capacity proportion of the wind turbine; K w It represents the primary frequency regulation coefficient set when the wind turbine participates in frequency regulation; f w (t) represents the output of the wind turbine frequency regulation dead zone;

[0048] The expression of the primary frequency modulation output power of a photovoltaic unit includes:

[0049] ΔP b (t) = -γK b f b (t);

[0050] Among them, ΔP s (t) represents the primary frequency modulation output power of the photovoltaic unit; β represents the capacity proportion of the photovoltaic unit; K s It represents the primary frequency modulation coefficient set when the photovoltaic unit participates in frequency modulation; f s (t) represents the output of the PV unit in the dead zone of frequency regulation;

[0051] The expression of the primary frequency modulation output power of the battery energy storage group includes:

[0052] ΔP b (t) = -γK b f b (t);

[0053] Among them, ΔP b (t) represents the primary frequency modulation output power of the battery energy storage group; γ represents the capacity ratio of the battery energy storage group; K b It represents the primary frequency modulation coefficient set when the battery energy storage group participates in frequency modulation; f b(t) represents the output of the battery energy storage group in the frequency regulation dead zone.

[0054] S202, determining a primary frequency modulation output power expression of the thermal power unit based on the frequency response analytical expression group.

[0055] It is understandable that as a traditional main power generation unit, the primary frequency regulation capability of thermal power units is crucial to maintaining the frequency stability of the power system. According to the above frequency response analytical formula group, the primary frequency regulation output power expression of the thermal power unit can be derived, which can be expressed as

[0056]

[0057] Among them, ΔP f (t) represents the primary frequency modulation output power of the thermal power unit; Δf(t) represents the system frequency deviation; F H It is expressed as the percentage of the high-pressure cylinder output power to the total turbine output; T R It is represented by the volume time constant of the intermediate reheat steam of the thermal power unit; s is represented by the Laplace differential operator in the complex frequency domain; R is represented by the static adjustment difference coefficient of the thermal power unit.

[0058] S203: constructing the primary frequency modulation dead zone target analytical expression based on the frequency response analytical expression group and the primary frequency modulation output power expression.

[0059] Specifically, combining the primary frequency regulation output power expressions of renewable energy and thermal power units, an analytical expression for the primary frequency regulation dead zone target is constructed. The analytical expression for the primary frequency regulation dead zone target aims to quantify how the various power generation units work together to cope with frequency changes within a specific frequency deviation range, while taking into account the impact of the existence of the frequency regulation dead zone on the system response.

[0060] Here, refer to Figure 3 As shown in the figure, when constructing the target analytical expression of the primary frequency modulation dead zone, the time dynamic differential equation of the whole system is introduced on the basis of the local primary frequency modulation power output in the system of the frequency response analytical expression group and the primary frequency modulation output power expression, so as to realize the establishment of the dynamic model of the whole new energy and traditional thermal power unit combined system. The output of each dead zone is taken as the new state variable, and the following equation is established:

[0061]

[0062] in, Expressed as the second derivative of frequency deviation with respect to time; It is expressed as the second-order derivative of frequency deviation with respect to time; M is expressed as the system inertia time constant; D is expressed as the system damping coefficient; μ is expressed as the total proportion of new energy units; Expressed as the first-order derivative of x(t) with respect to time; ΔP L(t) is expressed as a step power disturbance function; It is expressed as the first-order derivative of the step power disturbance function with respect to time, which is an impulse function; k = K w +K s +K b ; x(t) = f w (t)+f s (t)+f b (t).

[0063] It is understandable that since the differential equation of the frequency modulation dead zone contains a step power disturbance function and its derivative impulse function, it will cause a sudden change in the state quantity, resulting in the inability to resolve the system dynamic time domain differential equation. Therefore, this application adopts a dynamic time domain analytical formula for solving the system frequency in sections inside and outside the dead zone, and arranges the above time domain differential equation as shown in the formula:

[0064]

[0065] S204, determining a time-domain solution for the frequency deviation of a common type frequency modulation dead zone and a time-domain solution for the frequency deviation of a step type frequency modulation dead zone based on the primary frequency modulation dead zone target analytical expression.

[0066] Specifically, due to the discontinuous system state, different wind, solar and storage input action times and different outputs, it is necessary to analyze the impact of wind, solar and storage frequency regulation at different stages on frequency dynamics. The general solution of the system's dynamic frequency time domain differential equation is as follows:

[0067]

[0068]

[0069] Among them, λ1 and λ2 represent the characteristic roots of the primary frequency modulation dead zone.

[0070] Specifically, the time domain solution of the frequency dynamic deviation within the FM dead zone is:

[0071]

[0072] When the frequency deviation exceeds the dead zone, there is The system frequency differential equation of the general dead zone is as follows:

[0073]

[0074] The general solution form of Δf(t) outside the dead zone is as follows:

[0075]

[0076] Among them, C3 and C4 are constants; λ3 and λ4 are characteristic roots outside the primary frequency modulation dead zone; t0 is the moment when the frequency drops to the primary frequency modulation dead zone; Δf0 is the special solution of the formula.

[0077] Therefore, the time domain solution of the frequency deviation in the common FM dead zone is expressed as:

[0078]

[0079]

[0080] Among them, Δf0(t) represents the time domain solution of the frequency deviation of the common frequency modulation dead zone; λ1 and λ2 represent the characteristic roots of the primary frequency modulation dead zone; C3 and C4 represent constants; λ3 and λ4 represent the characteristic roots outside the primary frequency modulation dead zone; t0 represents the moment when the frequency drops to the primary frequency modulation dead zone.

[0081] Specifically, when the frequency deviation exceeds the dead zone, the system frequency differential equation of the step dead zone is as follows:

[0082]

[0083] The general solution form of Δf(t) outside the dead zone is as follows:

[0084]

[0085] Where Δf s It is expressed as a particular solution of the formula; C5 and C6 are expressed as constants.

[0086] Therefore, the time domain solution of the frequency deviation in the step frequency modulation dead zone is expressed as:

[0087]

[0088] Where Δf s (t) represents the time domain solution of the frequency deviation in the step frequency modulation dead zone; C5 and C6 are constants.

[0089] S102, calculating the first moment value corresponding to the lowest frequency point in the common type FM dead zone according to the time domain solution of the frequency deviation of the common type FM dead zone, and determining the first maximum frequency deviation value according to the time domain solution of the frequency deviation of the common type FM dead zone and the first moment value, and determining the first steady-state frequency value according to the time domain solution of the frequency deviation of the common type FM dead zone and the first moment value.

[0090] It is understandable that the lowest frequency point usually refers to the time point or moment when the frequency deviation of the FM signal is the smallest. When the frequency of the common dead zone drops to the lowest point, the first-order derivative of the frequency deviation is zero, that is, Based on the calculation formula at the first moment, the frequency deviation time domain solution of the common frequency modulation dead zone can be used to obtain the value t corresponding to the first moment of the lowest frequency point. 1,max for:

[0091]

[0092] Specifically, in the common frequency modulation dead zone, the maximum frequency deviation refers to the maximum amplitude of the frequency deviation change in the signal. By analyzing the time domain solution of the common frequency modulation dead zone, the value of this maximum deviation can be determined based on the first maximum frequency deviation calculation formula, that is, the first maximum frequency deviation value, which reflects the frequency change amplitude of the signal during the modulation process. Here, the first maximum frequency deviation value calculation formula includes:

[0093]

[0094] Where Δf 1,max Expressed as the first maximum frequency deviation value.

[0095] Specifically, the steady-state frequency refers to the frequency value of the FM signal when it enters a stable state after a certain period of time. The steady-state frequency is usually the value at which the signal frequency tends to be constant after the system modulation is completed. The frequency deviation time domain solution can be used to determine the value at the first moment. Based on the first steady-state frequency calculation formula, the first steady-state frequency value is determined according to the frequency deviation time domain solution of the common FM dead zone and the first moment value, that is, the frequency when the FM signal enters a steady state. Here, the first steady-state frequency value calculation formula can be expressed as:

[0096]

[0097] Where Δf 1,∞ Expressed as the first steady-state frequency value.

[0098] S103, calculating the second moment value corresponding to the lowest frequency point in the step type FM dead zone according to the time domain solution of the frequency deviation of the step type FM dead zone, and determining the second maximum frequency deviation value according to the time domain solution of the frequency deviation of the step type FM dead zone and the second moment value, and determining the second steady-state frequency value according to the time domain solution of the frequency deviation of the step type FM dead zone and the second moment value.

[0099] Specifically, when the frequency of the step dead zone drops to the lowest point, the second moment value corresponding to the lowest frequency point in the step frequency modulation dead zone is calculated based on the second moment calculation formula according to the time domain solution of the frequency deviation of the step frequency modulation dead zone; then the second maximum frequency deviation value is determined based on the second maximum frequency deviation calculation formula according to the time domain solution of the frequency deviation of the step frequency modulation dead zone and the second moment value; finally, the second steady-state frequency value is determined based on the second steady-state frequency calculation formula according to the time domain solution of the frequency deviation of the step frequency modulation dead zone and the second moment value.

[0100] Here, the second moment calculation formula can be expressed as:

[0101]

[0102] Among them, t 2,max Expressed as the value at the second moment;

[0103] The second maximum frequency deviation calculation formula can be expressed as:

[0104]

[0105] Where Δf 2,max Expressed as the second maximum frequency deviation value;

[0106] The second steady-state frequency calculation formula can be expressed as:

[0107]

[0108] Where Δf 2,∞ Expressed as the first steady-state frequency value.

[0109] S104, determining a frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value; and adjusting the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone based on the frequency modulation correction coefficient.

[0110] For example, based on the maximum frequency deviation, a reasonable maximum frequency deviation target value Δf(t) is set. max,target (i.e., the maximum steady-state frequency deviation of the step type), which is the lowest frequency deviation that the system expects to achieve, as shown in the following formula:

[0111]

[0112] In order to make the maximum frequency deviation of the system meet the expected target, the correction coefficient c0 can be introduced to change the frequency modulation coefficient of renewable energy to c0k. Here, the purpose of introducing the frequency modulation correction coefficient is to reduce the maximum frequency deviation and steady-state frequency deviation after the disturbance of renewable energy grid connection. Specifically, the maximum frequency deviation Δf(t) of the actual system is maxand target value Δf(t) max,target By comparison, the frequency modulation correction coefficient expression of c0 can be expressed as follows according to the first maximum frequency deviation value and the second maximum frequency deviation value:

[0113]

[0114] Wherein, c0 represents the frequency modulation correction coefficient.

[0115] Specifically, according to the obtained frequency modulation correction coefficient c0, the frequency modulation coefficient k in the calculation formula of the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone can be corrected to c0k, and the system frequency deviation is negatively correlated with the new energy frequency modulation coefficient. Therefore, the corrected new energy primary frequency modulation coefficient can increase the maximum frequency deviation point of the system, making the power system frequency more stable after the new energy grid is connected to participate in the primary frequency modulation.

[0116] The dynamic parameter optimization method, device, medium and equipment including the primary frequency regulation dead zone provided in the embodiments of the present disclosure improve the challenges of frequency stability of the power grid system brought about by the grid connection of a large number of new energy sources, help reduce the frequency deviation after disturbance of the grid connection of new energy sources, and improve the stability of the power system. The participation of new energy sources such as wind, solar and storage in primary frequency regulation not only improves the frequency stability and operating efficiency of the power grid, but also supports the stability and economy of electricity consumption on the load side and the user side, and promotes the development of the power system towards a more efficient, low-carbon and intelligent direction.

[0117] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0118] Based on the same inventive concept, the embodiment of the present disclosure also provides a dynamic parameter optimization device containing a primary frequency modulation dead zone corresponding to the dynamic parameter optimization method containing a primary frequency modulation dead zone. Since the principle of solving the problem by the device in the embodiment of the present disclosure is similar to the above-mentioned dynamic parameter optimization method containing a primary frequency modulation dead zone in the embodiment of the present disclosure, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0119] Reference Figure 4 FIG. 4 is a schematic diagram of a dynamic parameter optimization device 400 including a primary frequency modulation dead zone provided by an embodiment of the present disclosure, wherein the device comprises:

[0120] A time domain solution determination module 401, used to determine a time domain solution of a frequency deviation in a common FM dead zone and a time domain solution of a frequency deviation in a step FM dead zone;

[0121] The common frequency modulation dead zone solving module 402 is used to calculate the first moment value corresponding to the lowest frequency point in the common frequency modulation dead zone according to the frequency deviation time domain solution of the common frequency modulation dead zone, and determine the first maximum frequency deviation value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value, and determine the first steady-state frequency value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value;

[0122] The step frequency modulation dead zone solving module 403 is used to calculate the second moment value corresponding to the lowest frequency point in the step frequency modulation dead zone according to the frequency deviation time domain solution of the step frequency modulation dead zone, and determine the second maximum frequency deviation value according to the frequency deviation time domain solution of the step frequency modulation dead zone and the second moment value, and determine the second steady-state frequency value according to the frequency deviation time domain solution of the step frequency modulation dead zone and the second moment value;

[0123] The frequency modulation correction coefficient determination module 404 is used to determine the frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value; based on the frequency modulation correction coefficient, the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone are parameter adjusted respectively.

[0124] In some possible embodiments, the time domain solution determination module 401 is specifically used to:

[0125] Construct a frequency response analytical expression group containing the primary frequency regulation dead zone of new energy; wherein the frequency response analytical expression group includes the primary frequency regulation output power expression of the wind turbine group, the primary frequency regulation output power expression of the photovoltaic group and the primary frequency regulation output power expression of the battery energy storage group;

[0126] Determine the primary frequency modulation output power expression of the thermal power unit based on the frequency response analytical expression group;

[0127] Constructing the primary frequency modulation dead zone target analytical expression based on the frequency response analytical expression group and the primary frequency modulation output power expression;

[0128] Based on the primary frequency modulation dead zone target analytical expression, respectively determine the frequency deviation time domain solution of the common frequency modulation dead zone and the frequency deviation time domain solution of the step frequency modulation dead zone;

[0129] The wind turbine primary frequency modulation output power expression includes:

[0130] ΔP w (t) = -αK w f w (t);

[0131] Among them, ΔP w(t) represents the primary frequency modulation output power of the wind turbine; α represents the capacity proportion of the wind turbine; K w It represents the primary frequency regulation coefficient set when the wind turbine participates in frequency regulation; f w (t) represents the output of the wind turbine frequency regulation dead zone;

[0132] The photovoltaic unit primary frequency modulation output power expression includes:

[0133] ΔP s (t) = -βK s f s (t);

[0134] Among them, ΔP s (t) represents the primary frequency modulation output power of the photovoltaic unit; β represents the capacity proportion of the photovoltaic unit; K s It represents the primary frequency modulation coefficient set when the photovoltaic unit participates in frequency modulation; f s (t) represents the output of the PV unit in the dead zone of frequency regulation;

[0135] The primary frequency modulation output power expression of the battery energy storage group includes:

[0136] ΔP b (t) = -γK b f b (t);

[0137] Among them, ΔP b (t) represents the primary frequency modulation output power of the battery energy storage group; γ represents the capacity ratio of the battery energy storage group; K b It represents the primary frequency modulation coefficient set when the battery energy storage group participates in frequency modulation; f b (t) represents the output of the battery energy storage group in the frequency modulation dead zone;

[0138] The primary frequency modulation output power expression of the thermal power unit includes:

[0139]

[0140] Among them, ΔP f (t) represents the primary frequency modulation output power of the thermal power unit; Δf(t) represents the system frequency deviation; F H It is expressed as the percentage of the high-pressure cylinder output power to the total turbine output; T R It is represented by the volume time constant of the intermediate reheat steam of the thermal power unit; s is represented by the Laplace differential operator in the complex frequency domain; R is represented by the static adjustment difference coefficient of the thermal power unit.

[0141] In some possible embodiments, the primary frequency modulation dead zone target analytical expression includes:

[0142]

[0143] in, Expressed as the second derivative of frequency deviation with respect to time; It is expressed as the second-order derivative of frequency deviation with respect to time; M is expressed as the system inertia time constant; D is expressed as the system damping coefficient; μ is expressed as the total proportion of new energy units; Expressed as the first-order derivative of x(t) with respect to time; ΔP L (t) is expressed as a step power disturbance function; It is expressed as the first-order derivative of the step power disturbance function with respect to time, which is an impulse function; k = K w +K s +K b ; x(t) = f w (t)+f s (t)+f b (t).

[0144] In some possible embodiments, the frequency deviation time domain solution of the common frequency modulation dead zone includes:

[0145]

[0146]

[0147] Among them, Δf0(t) represents the time domain solution of the frequency deviation of the common frequency modulation dead zone; λ1 and λ2 represent the characteristic roots of the primary frequency modulation dead zone; C3 and C4 represent constants; λ3 and λ4 represent the characteristic roots outside the primary frequency modulation dead zone; t0 represents the moment when the frequency drops to the primary frequency modulation dead zone;

[0148] The time domain solution of the frequency deviation of the step-type frequency modulation dead zone includes:

[0149]

[0150] Where Δf s (t) represents the time domain solution of the frequency deviation in the step frequency modulation dead zone; C5 and C6 are constants.

[0151] In some possible embodiments, the common frequency modulation dead zone solving module 402 is specifically used for:

[0152] Calculate the first moment value corresponding to the lowest frequency point in the common type frequency modulation dead zone according to the frequency deviation time domain solution of the common type frequency modulation dead zone based on the first moment calculation formula;

[0153] The first moment calculation formula includes:

[0154]

[0155] Among them, t 1,max Expressed as the first moment value;

[0156] The common frequency modulation dead zone solving module 402 is specifically used for:

[0157] Determine a first maximum frequency deviation value based on a first maximum frequency deviation calculation formula according to a frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value;

[0158] The first maximum frequency deviation numerical calculation formula includes:

[0159]

[0160] Where Δf 1,max Expressed as the first maximum frequency deviation value;

[0161] The common frequency modulation dead zone solving module 402 is specifically used for:

[0162] Determine a first steady-state frequency value based on a first steady-state frequency calculation formula according to a frequency deviation time-domain solution of the common frequency modulation dead zone and the first moment value;

[0163] The first steady-state frequency numerical calculation formula includes:

[0164]

[0165] Where Δf 1,∞ Expressed as the first steady-state frequency value.

[0166] In some possible embodiments, the step frequency modulation dead zone solving module 403 is specifically used for:

[0167] Calculate the second moment value corresponding to the lowest frequency point in the step-type frequency modulation dead zone according to the frequency deviation time domain solution of the step-type frequency modulation dead zone based on the second moment calculation formula;

[0168] The second moment calculation formula includes:

[0169]

[0170] Among them, t 2,max Expressed as the value at the second moment;

[0171] The step frequency modulation dead zone solving module 403 is specifically used for:

[0172] Determine a second maximum frequency deviation value based on a second maximum frequency deviation calculation formula according to a frequency deviation time domain solution of the step-type frequency modulation dead zone and the second moment value;

[0173] The second maximum frequency deviation calculation formula includes:

[0174]

[0175] Where Δf 2,max Expressed as the second maximum frequency deviation value;

[0176] The step frequency modulation dead zone solving module 403 is specifically used for:

[0177] Determine the second steady-state frequency value based on the second steady-state frequency calculation formula according to the frequency deviation time domain solution of the step-type frequency modulation dead zone and the second moment value;

[0178] The second steady-state frequency calculation formula includes:

[0179]

[0180] Where Δf 2,∞ Expressed as the first steady-state frequency value.

[0181] In some possible embodiments, the frequency modulation correction coefficient determination module 404 is specifically used to:

[0182] Determine a frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value based on a frequency modulation correction coefficient expression;

[0183] The frequency modulation correction coefficient expression includes:

[0184]

[0185]

[0186] Wherein, c0 represents the frequency modulation correction coefficient.

[0187] Based on the same technical concept, the embodiment of the present disclosure also provides a computer device. Figure 5 , which is a schematic diagram of the structure of a computer device 500 provided in an embodiment of the present disclosure, including a processor 501, a memory 502, and a bus 503. The memory 502 is used to store execution instructions, including a memory 5021 and an external memory 5022; the memory 5021 is also called an internal memory, which is used to temporarily store the operation data in the processor 501 and the data exchanged with the external memory 5022 such as a hard disk. The processor 501 exchanges data with the external memory 5022 through the memory 5021.

[0188] In the embodiment of the present application, the memory 502 is specifically used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 501. That is, when the computer device 500 is running, the processor 501 communicates with the memory 502 through the bus 503, so that the processor 501 executes the application code stored in the memory 502, and then executes the method described in any of the above embodiments.

[0189] Among them, the memory 502 can be, but is not limited to, random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), programmable read-only memory (Programmable Read-Only Memory, PROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable read-only memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc.

[0190] Processor 501 may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present invention may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0191] It is to be understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the computer device 500. In other embodiments of the present application, the computer device 500 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0192] The embodiment of the present disclosure also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the dynamic parameter optimization method containing a primary frequency modulation dead zone described in the above method embodiment are executed. The storage medium can be a volatile or non-volatile computer-readable storage medium.

[0193] The embodiments of the present disclosure also provide a computer program product, which carries a program code. The instructions included in the program code can be used to execute the steps of the dynamic parameter optimization method containing a primary frequency modulation dead zone described in the above method embodiment. For details, please refer to the above method embodiment, which will not be repeated here.

[0194] The computer program product may be implemented in hardware, software or a combination thereof. In one optional embodiment, the computer program product is implemented as a computer storage medium. In another optional embodiment, the computer program product is implemented as a software product, such as a software development kit (SDK).

[0195] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In the several embodiments provided in the present disclosure, it should be understood that the disclosed system and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0196] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0197] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0198] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0199] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present disclosure, which are used to illustrate the technical solutions of the present disclosure, rather than to limit them. The protection scope of the present disclosure is not limited thereto. Although the present disclosure is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present disclosure, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A dynamic parameter optimization method containing a primary frequency modulation dead zone, characterized in that: include: Determine the time domain solution of frequency deviation in common frequency modulation dead zone and the time domain solution of frequency deviation in step frequency modulation dead zone; Calculate a first moment value corresponding to the lowest frequency point in the common type FM dead zone according to the frequency deviation time domain solution of the common type FM dead zone, determine a first maximum frequency deviation value according to the frequency deviation time domain solution of the common type FM dead zone and the first moment value, and determine a first steady-state frequency value according to the frequency deviation time domain solution of the common type FM dead zone and the first moment value; Calculate a second moment value corresponding to the lowest frequency point in the step-type frequency modulation dead zone according to the time-domain solution of the frequency deviation in the step-type frequency modulation dead zone, determine a second maximum frequency deviation value according to the time-domain solution of the frequency deviation in the step-type frequency modulation dead zone and the second moment value, and determine a second steady-state frequency value according to the time-domain solution of the frequency deviation in the step-type frequency modulation dead zone and the second moment value; Determine a frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value; Based on the frequency modulation correction coefficient, the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone are respectively adjusted in parameters.

2. The method according to claim 1, characterized in that The method of determining a frequency deviation time domain solution of a common frequency modulation dead zone and a frequency deviation time domain solution of a step frequency modulation dead zone includes: Construct a frequency response analytical expression group containing the primary frequency regulation dead zone of new energy; wherein the frequency response analytical expression group includes the primary frequency regulation output power expression of the wind turbine group, the primary frequency regulation output power expression of the photovoltaic group and the primary frequency regulation output power expression of the battery energy storage group; Determine the primary frequency modulation output power expression of the thermal power unit based on the frequency response analytical expression group; Constructing the primary frequency modulation dead zone target analytical expression based on the frequency response analytical expression group and the primary frequency modulation output power expression; Based on the primary frequency modulation dead zone target analytical expression, respectively determine the frequency deviation time domain solution of the common frequency modulation dead zone and the frequency deviation time domain solution of the step frequency modulation dead zone; The wind turbine primary frequency modulation output power expression includes: ΔP w (t)=-αK w f w (t); Among them, ΔP w (t) represents the primary frequency modulation output power of the wind turbine; α represents the capacity proportion of the wind turbine; K w It represents the primary frequency regulation coefficient set when the wind turbine participates in frequency regulation; f w (t) represents the output of the wind turbine frequency regulation dead zone; The photovoltaic unit primary frequency modulation output power expression includes: ΔP s (t)=-βK s f s (t); Among them, ΔP s (t) represents the primary frequency modulation output power of the photovoltaic unit; β represents the capacity proportion of the photovoltaic unit; K s It represents the primary frequency modulation coefficient set when the photovoltaic unit participates in frequency modulation; f s (t) represents the output of the PV unit in the dead zone of frequency regulation; The primary frequency modulation output power expression of the battery energy storage group includes: ΔP b (t)=-γK b f b (t); Among them, ΔP b (t) represents the primary frequency modulation output power of the battery energy storage group; γ represents the capacity ratio of the battery energy storage group; K b It represents the primary frequency modulation coefficient set when the battery energy storage group participates in frequency modulation; f b (t) represents the output of the battery energy storage group in the frequency modulation dead zone; The primary frequency modulation output power expression of the thermal power unit includes: Among them, ΔP f (t) represents the primary frequency modulation output power of the thermal power unit; Δf(t) represents the system frequency deviation; F H It is expressed as the percentage of the high-pressure cylinder output power to the total turbine output; T R It is represented by the volume time constant of the intermediate reheat steam of the thermal power unit; s is represented by the Laplace differential operator in the complex frequency domain; R is represented by the static adjustment difference coefficient of the thermal power unit.

3. The method according to claim 2, characterized in that The primary frequency modulation dead zone target analytical expression includes: in, Expressed as the second derivative of frequency deviation with respect to time; It is expressed as the second-order derivative of frequency deviation with respect to time; M is expressed as the system inertia time constant; D is expressed as the system damping coefficient; μ is expressed as the total proportion of new energy units; Expressed as the first-order derivative of x(t) with respect to time; ΔP L (t) is expressed as a step power disturbance function; It is expressed as the first-order derivative of the step power disturbance function with respect to time, which is an impulse function; k = K w +K s +K b ; x(t) = f w (t)+f s (t)+f b (t).

4. The method according to claim 3, characterized in that The frequency deviation time domain solution of the common frequency modulation dead zone includes: Among them, Δf0(t) represents the time domain solution of the frequency deviation of the common frequency modulation dead zone; λ1 and λ2 represent the characteristic roots of the primary frequency modulation dead zone; C3 and C4 represent constants; λ3 and λ4 represent the characteristic roots outside the primary frequency modulation dead zone; t0 represents the moment when the frequency drops to the primary frequency modulation dead zone; The time domain solution of the frequency deviation of the step-type frequency modulation dead zone includes: Where Δf s (t) represents the time domain solution of the frequency deviation in the step frequency modulation dead zone; C5 and C6 are constants.

5. The method according to claim 4, characterized in that The calculating, according to the frequency deviation time domain solution of the common type frequency modulation dead zone, a first moment value corresponding to the lowest frequency point in the common type frequency modulation dead zone comprises: Calculate the first moment value corresponding to the lowest frequency point in the common type frequency modulation dead zone according to the frequency deviation time domain solution of the common type frequency modulation dead zone based on the first moment calculation formula; The first moment calculation formula includes: Among them, t 1,max Expressed as the first moment value; The determining of the first maximum frequency deviation value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value includes: Determine a first maximum frequency deviation value based on a first maximum frequency deviation calculation formula according to a frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value; The first maximum frequency deviation numerical calculation formula includes: Where Δf 1,max Expressed as the first maximum frequency deviation value; The determining of the first steady-state frequency value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value includes: Determine a first steady-state frequency value based on a first steady-state frequency calculation formula according to a frequency deviation time-domain solution of the common frequency modulation dead zone and the first moment value; The first steady-state frequency numerical calculation formula includes: Where Δf 1,∞ Expressed as the first steady-state frequency value.

6. The method according to claim 4, characterized in that The calculating, according to the frequency deviation time domain solution of the step-type frequency modulation dead zone, a second time value corresponding to the lowest frequency point in the step-type frequency modulation dead zone comprises: Calculate the second moment value corresponding to the lowest frequency point in the step-type frequency modulation dead zone according to the frequency deviation time domain solution of the step-type frequency modulation dead zone based on the second moment calculation formula; The second moment calculation formula includes: Among them, t 2,max Expressed as the value at the second moment; The determining of the second maximum frequency deviation value according to the frequency deviation time domain solution of the step-type frequency modulation dead zone and the second moment value comprises: Determine a second maximum frequency deviation value based on a second maximum frequency deviation calculation formula according to a frequency deviation time domain solution of the step-type frequency modulation dead zone and the second moment value; The second maximum frequency deviation calculation formula includes: Where Δf 2,max Expressed as the second maximum frequency deviation value; The determining of the second steady-state frequency value according to the frequency deviation time domain solution of the step-type frequency modulation dead zone and the second moment value comprises: Determine the second steady-state frequency value based on the second steady-state frequency calculation formula according to the frequency deviation time domain solution of the step-type frequency modulation dead zone and the second moment value; The second steady-state frequency calculation formula includes: Where Δf 2,∞ Expressed as the first steady-state frequency value.

7. The method according to claim 1, characterized in that The determining of the frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value includes: Determine a frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value based on a frequency modulation correction coefficient expression; The frequency modulation correction coefficient expression includes: Wherein, c0 represents the frequency modulation correction coefficient.

8. A dynamic parameter optimization device containing a primary frequency modulation dead zone, characterized in that: include: A time domain solution determination module, used to determine a time domain solution of a frequency deviation in a common frequency modulation dead zone and a time domain solution of a frequency deviation in a step frequency modulation dead zone; A common frequency modulation dead zone solving module, used to calculate a first moment value corresponding to the lowest frequency point in the common frequency modulation dead zone according to a frequency deviation time domain solution of the common frequency modulation dead zone, and determine a first maximum frequency deviation value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value, and determine a first steady-state frequency value according to the frequency deviation time domain solution of the common frequency modulation dead zone and the first moment value; A step frequency modulation dead zone solving module, used for calculating a second time value corresponding to the lowest frequency point in the step frequency modulation dead zone according to a time domain solution of the frequency deviation of the step frequency modulation dead zone, and determining a second maximum frequency deviation value according to the time domain solution of the frequency deviation of the step frequency modulation dead zone and the second time value, and determining a second steady-state frequency value according to the time domain solution of the frequency deviation of the step frequency modulation dead zone and the second time value; A frequency modulation correction coefficient determination module, used to determine the frequency modulation correction coefficient according to the first maximum frequency deviation value and the second maximum frequency deviation value; Based on the frequency modulation correction coefficient, the first maximum frequency deviation value and the first steady-state frequency value in the common frequency modulation dead zone are respectively adjusted in parameters.

9. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

10. A computer device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

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