Power control method and system of combined power supply system

Abstract

The invention relates to the technical field of power system automation, and discloses a power control method and system for a combined power supply system, and the method comprises the steps: inputting a proportionality coefficient obtained in advance into a preset adjustment type engineering steepest tracking filter in combination with a target power supply system, and carrying out the filtering of noise interference, according to the invention, the filter can have appropriate gain in different frequency bands, so that power system signals can be tracked more accurately, signal distortion of the power system is reduced, the overall tracking precision is improved, accurate, smooth and stable filtering signals are obtained, and then the filtering signals are input into a preset controller for signal processing. The power control signal used for accurately controlling the target power supply system can be obtained, the power control signal is adopted to carry out power control on the combined power supply system, system voltage fluctuation or equipment faults caused by insufficient power supply are avoided, and the stability of the combined power supply system is improved. The technical problem of how to improve the stability of the combined power supply system is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power system automation, and in particular to a power control method and system for a combined power supply system. Background Art

[0002] A combined power supply system is a power supply system composed of a variety of different types of power supplies. In a combined power supply system composed of compressed air and wind turbines, due to the instability of the power of the wind power system, noise interference is common in the process signal, and a low-pass filter is often required to filter out the noise interference, among which the first-order inertial filter (FOIF) is widely used; in addition, the proportional-integral-derivative (PID) controller structure widely used in the field of industrial process control is based on the first-order inertial filter construction; the first-order inertial filter is a typical exponential tracking filtering mechanism, and the main problem is that the output and input efficiency are not high. The constructed PID controller mainly has the problem of low external disturbance suppression performance; from the perspective of improving the filtering performance, including improving the external disturbance suppression performance of the controller, it is necessary to improve the performance of the low-pass filter output tracking input.

[0003] Tracking filters are designed to extract useful signal components from measurement signals containing noise and interference in order to accurately track the target system state or signal. Tracking filters play a vital role. However, in the control of existing combined power systems, commonly used tracking filters, such as the fastest tracking filter and the accelerated engineering fastest tracking filter, have a significant problem, that is, they are not adjustable. This means that once the structure and parameters of the filter are determined, it is difficult to adjust its performance in different working environments or when facing different system requirements. Therefore, there is an urgent need for an adjustable tracking filter to track signals more accurately, reduce signal distortion, improve overall tracking accuracy, and thus improve the stability of the combined power system. Summary of the invention

[0004] The present invention provides a power control method and system for a combined power supply system, which solves the technical problem of how to improve the stability of the combined power supply system.

[0005] A first aspect of the present invention provides a power control method for a combined power supply system, comprising:

[0006] In response to a power control request for a target power system, obtaining a power system signal and a proportional coefficient of the target power system;

[0007] The power supply system signal and the proportional coefficient are input into a preset filter for signal processing to obtain a filtered signal;

[0008] The filtered signal is input into a preset controller for signal processing to obtain a power control signal;

[0009] The power control signal is used to perform power control on the target power system.

[0010] Optionally, the preset filter includes an operation unit, a radian value unit, a first sine function unit, a second sine function unit, a third sine function unit and a filter combination unit, and the power system signal and the proportional coefficient are input into the preset filter for signal processing to obtain a filtered signal, including:

[0011] The power supply system signal is input into the operation unit for operation to obtain an electrical input signal;

[0012] The proportional coefficient is input into the radian value unit for calculation to obtain the radian value of the sine function;

[0013] The sine function radian value, the first preset order and the first total order are input into the first sine function unit for operation to obtain a first sine signal;

[0014] The sine function radian value, the second preset order and the second total order are input into the second sine function unit for operation to obtain a second sine signal;

[0015] The first preset order, the preset filter time constant and the first total order are input into a third sine function unit for operation to obtain a third sine signal;

[0016] The electrical input signal, the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal are input into the filter combination unit for multiplication operation to obtain a filtered signal.

[0017] Optionally, the power system signal includes a power input signal, a power feedback signal and a disturbance signal, the operation unit includes a first operation subunit and a second operation subunit, and the power system signal is input into the operation unit for operation to obtain the electrical input signal, including:

[0018] The power input signal and the power feedback signal are input into the first operation subunit to perform a difference operation to obtain a first difference signal;

[0019] The first difference signal and the disturbance signal are input into the second operation subunit for performing a sum operation to obtain an electrical input signal.

[0020] Optionally, it also includes:

[0021] The power control signal is updated to a new power feedback signal in the power system signal, and the process jumps to the step of using the power system signal and the proportional coefficient to input a preset filter for signal processing to obtain a filtered signal.

[0022] Optionally, the preset controller is a proportional-integral-differential controller, and the step of inputting the filtered signal into the preset controller for signal processing to obtain a power control signal includes:

[0023] The filtered signal is multiplied by the transfer function of the proportional-integral-differential controller to obtain a power control signal.

[0024] A second aspect of the present invention provides a power control system for a combined power supply system, comprising:

[0025] A response module, used to respond to a power control request for a target power system and obtain a power system signal and a proportional coefficient of the target power system;

[0026] A first signal processing module, configured to input the power system signal and the proportional coefficient into a preset filter for signal processing to obtain a filtered signal;

[0027] A second signal processing module, configured to input the filtered signal into a preset controller for signal processing to obtain a power control signal;

[0028] A power control module is used to use the power control signal to perform power control on the target power system.

[0029] Optionally, the preset filter includes a calculation unit, a radian value unit, a first sine function unit, a second sine function unit, a third sine function unit and a filter combination unit, and the first signal processing module includes:

[0030] An electrical input signal submodule, used for inputting the power supply system signal into the computing unit for computing to obtain an electrical input signal;

[0031] A sine function radian value submodule, used to use the proportional coefficient to input the radian value unit for calculation to obtain a sine function radian value;

[0032] A first sinusoidal signal submodule, configured to input the radian value of the sinusoidal function, the first preset order and the first total order into the first sinusoidal function unit for operation to obtain a first sinusoidal signal;

[0033] A second sinusoidal signal submodule, configured to input the radian value of the sinusoidal function, a second preset order and a second total order into the second sinusoidal function unit for operation to obtain a second sinusoidal signal;

[0034] A third sinusoidal signal submodule, configured to use the first preset order, the preset filter time constant and the first total order to input into a third sinusoidal function unit for operation to obtain a third sinusoidal signal;

[0035] The filter signal submodule is used to input the electrical input signal, the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal into the filter combination unit for multiplication operation to obtain a filter signal.

[0036] A third aspect of the present invention provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the power control method of the combined power supply system as described in any one of the above items.

[0037] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the power control method for a combined power supply system as described in any one of the above items.

[0038] A fifth aspect of the present invention provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes the power control method of the combined power supply system as described in any one of the above items.

[0039] It can be seen from the above technical solutions that the present invention has the following advantages:

[0040] In the present invention, in response to a power control request for a target power system, a power system signal and a proportional coefficient of the target power system are obtained, the power system signal and the proportional coefficient are input into a preset filter for signal processing to obtain a filter signal, the filter signal is input into a preset controller for signal processing to obtain a power control signal, and the power control signal is used to control the power of the target power system; the present invention uses the pre-acquired proportional coefficient, combined with the target power system, to input into a preset adjustable engineering fastest tracking filter to filter out noise interference, so that the filter can have a suitable gain in different frequency bands, thereby more accurately tracking the power system signal, reducing the power system signal distortion, and improving the overall tracking accuracy, thereby obtaining an accurate, smooth and stable filter signal, and then inputting the filter signal into a preset controller for signal processing, so as to obtain a power control signal for accurately controlling the target power system, and using the power control signal to control the power of the joint power system, avoiding system voltage fluctuations or equipment failures caused by insufficient power supply, and improving the stability of the joint power system. Solve the technical problem of how to improve the stability of the joint power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 A flowchart of a power control method for a combined power system provided in Embodiment 1 of the present invention;

[0043] Figure 2 A flowchart of a power control method for a combined power system provided in Embodiment 2 of the present invention;

[0044] Figure 3 It is the power control block diagram of the combined power supply system;

[0045] Figure 4 It is a schematic diagram of the simulation experiment results of the process output characteristics of the regulating engineering fastest tracking filter;

[0046] Figure 5 It is a schematic diagram of the simulation experimental results of the frequency domain amplitude-frequency gain characteristics of the adjustable engineering fastest tracking filter;

[0047] Figure 6 A structural block diagram of a power control system of a combined power supply system provided in Embodiment 3 of the present invention;

[0048] Figure 7This is a structural block diagram of a computer device provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0049] The embodiments of the present invention provide a power control method and system for a combined power system, which are used to solve the technical problem of how to improve the stability of the combined power system.

[0050] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Window function filtering represents a fastest tracking filter. Window functions include rectangular windows, triangular windows, Hanning windows, etc. The common feature of these window functions is symmetry. The prior art proposes right-angle triangular windows, 1 / 4 sine windows, 1 / 4 inverse raised cosine windows, etc. The common feature of these window functions is asymmetry.

[0052] Rectangular window function filtering represents a (zero acceleration) fastest tracking filter (FTF), and right-angle triangular window function filtering represents an accelerated fastest tracking filter (AFTF); FTF and AFTF need engineering reconstruction to have practical value. The engineering reconstruction of FTF obtains the engineering fastest tracking filter (EFTF), and the engineering reconstruction of AFTF obtains the acceleration engineering fastest tracking filter (AEFTF); EFTF and AEFTF are the basis for constructing the structure of the engineering fastest controller (EFC). Compared with PID control, EFC significantly improves the external disturbance suppression performance.

[0053] However, the main problem of the existing fastest tracking filter and accelerated engineering fastest tracking filter is that they are not adjustable, and the constructed engineering fastest controller lacks certain flexibility. Therefore, the present invention proposes an adjustable tracking filter, so as to track the signal more accurately, reduce signal distortion, improve the overall tracking accuracy, and thus improve the stability of the combined power supply system.

[0054] See also Figure 1 , Figure 1 A flowchart of the steps of a power control method for a combined power system provided in Embodiment 1 of the present invention.

[0055] The present invention provides a power control method for a combined power supply system, comprising:

[0056] Step 101 : Respond to a power control request for a target power system and obtain a power system signal and a proportional coefficient of the target power system.

[0057] The target power system refers to a combined power system consisting of compressed air and wind turbines. In the combined power system, wind turbines serve as the main energy capture device to convert wind energy into electrical energy, while the compressed air part plays the role of energy storage and regulation. The two work together to improve the stability, reliability and efficiency of energy supply.

[0058] A power control request refers to a request instruction regarding power output adjustment issued to a target power system.

[0059] The power system signal refers to the power input signal, power feedback signal and disturbance signal of the target power system, and is a system signal used to input a preset filter for signal processing.

[0060] The power input signal refers to the power process signal in the compressed air of the target power system.

[0061] The power feedback signal refers to the power signal output after being processed by the preset controller at the last moment, that is, the power control signal used to perform power control on the target power system at the last moment.

[0062] Disturbance signals refer to external or internal factors that cause changes in the normal operating state of the target power system, including wind speed fluctuations, temperature changes, load fluctuations, unit failures, compressed air system failures and other change signals.

[0063] The proportional coefficient refers to a proportional system used to adjust the preset filter, thereby achieving adjustable process output characteristics of the preset filter and adjustable frequency domain amplitude-frequency gain characteristics.

[0064] In an embodiment of the present invention, in response to a received request instruction for adjusting the power output of a target power system, the request instruction is read to obtain a power system signal and a proportional coefficient of the target power system.

[0065] Step 102: Use the power system signal and the proportional coefficient to input into a preset filter for signal processing to obtain a filtered signal.

[0066] The preset filter refers to an adjustable engineering fastest tracking filter used to filter out noise interference from power system signals.

[0067] It is worth mentioning that the filter in the present invention is an adjustable engineering fastest tracking filter, and by adjusting the proportional coefficient of the filter, the process output characteristics of the adjustable engineering fastest tracking filter and the frequency domain amplitude-frequency gain characteristics can be adjusted.

[0068] In the embodiment of the present invention, the power system signal and the proportional coefficient are input into a preset filter to filter out noise interference, thereby obtaining a smooth and stable filtered signal.

[0069] Step 103: input the filtered signal into a preset controller for signal processing to obtain a power control signal.

[0070] In the embodiment of the present invention, the filtered signal is input into a preset controller for signal processing to generate a power control signal for accurately controlling the target power system.

[0071] Step 104: Use the power control signal to perform power control on the target power system.

[0072] In the embodiment of the present invention, a power control signal is used to perform power control on the target power system.

[0073] In the present invention, in response to a power control request for a target power system, a power system signal and a proportional coefficient of the target power system are obtained, the power system signal and the proportional coefficient are input into a preset filter for signal processing to obtain a filter signal, the filter signal is input into a preset controller for signal processing to obtain a power control signal, and the power control signal is used to control the power of the target power system; the present invention uses the pre-acquired proportional coefficient, combined with the target power system, to input into a preset adjustable engineering fastest tracking filter to filter out noise interference, so that the filter can have a suitable gain in different frequency bands, thereby more accurately tracking the power system signal, reducing the power system signal distortion, and improving the overall tracking accuracy, thereby obtaining an accurate, smooth and stable filter signal, and then inputting the filter signal into a preset controller for signal processing, so as to obtain a power control signal for accurately controlling the target power system, and using the power control signal to control the power of the joint power system, avoiding system voltage fluctuations or equipment failures caused by insufficient power supply, and improving the stability of the joint power system. Solve the technical problem of how to improve the stability of the joint power system.

[0074] See also Figure 2 , Figure 2 A flowchart of the steps of a power control method for a combined power system provided in Embodiment 2 of the present invention.

[0075] The present invention provides a power control method for a combined power supply system, comprising:

[0076] Step 201 : Respond to a power control request for a target power system and obtain a power system signal and a proportional coefficient of the target power system.

[0077] In the embodiment of the present invention, the specific implementation process of step 201 is similar to step 101 and will not be repeated here.

[0078] See also Figure 3 , Figure 3 It is the power control block diagram of the combined power supply system;

[0079] Step 202: Use the power system signal and the proportional coefficient to input into a preset filter for signal processing to obtain a filtered signal.

[0080] Further, the preset filter includes a calculation unit, a radian value unit, a first sine function unit, a second sine function unit, a third sine function unit and a filter combination unit, and step 202 may include the following sub-steps:

[0081] The input ends of the first sine function unit and the second sine function unit are both connected to the output end of the radian value unit;

[0082] The output ends of the operation unit, the first sine function unit, the second sine function unit and the third sine function unit are all connected to the filter combination unit;

[0083] S11, using the power supply system signal input operation unit to perform operation to obtain an electrical input signal.

[0084] Furthermore, the power system signal includes a power input signal, a power feedback signal and a disturbance signal, and S11 may include the following sub-steps:

[0085] S111 . Input a power input signal and a power feedback signal into a first operation subunit to perform a difference operation to obtain a first difference signal.

[0086] In the embodiment of the present invention, a power input signal and a power feedback signal are input into a first operation subunit to perform a difference operation to obtain a first difference signal.

[0087] S112: input the first difference signal and the disturbance signal into the second operation subunit for performing a sum operation to obtain an electrical input signal.

[0088] In the embodiment of the present invention, the first difference signal and the disturbance signal are input into the second operator unit to perform a sum operation to obtain an electrical input signal.

[0089] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the calculation method of the electrical input signal can be as follows:

[0090]

[0091] In the formula, Represents the power input signal, Represents the power feedback signal, represents the disturbance signal, Indicates the electrical input signal.

[0092] S12. Use the proportional coefficient to input the radian value unit for calculation to obtain the radian value of the sine function.

[0093] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, where the calculation method of the radian value of the sine function can be as follows:

[0094]

[0095] In the formula, Represents the radian value of the sine function, in rad / s. represents the proportionality factor, unit is dimensionless, The range is 0.5~1.

[0096] S13, using the radian value of the sine function, the first preset order and the first total order to input into the first sine function unit for calculation to obtain a first sine signal.

[0097] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the calculation method of the first sinusoidal signal can be as follows:

[0098]

[0099]

[0100] In the formula, represents the first sinusoidal signal, Represents the value of the nth sine function of the first preset order, in dimensionless units, Represents the nth first preset order, where n is a positive integer in the range of 1 to N and the unit is dimensionless. Represents the first total order, N is a positive integer, the unit is dimensionless, and the general value range is 10-30, specifically the total number of the first preset order.

[0101] S14, using the radian value of the sine function, the second preset order and the second total order to input into the second sine function unit for calculation to obtain a second sine signal.

[0102] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the calculation method of the second sinusoidal signal can be as follows:

[0103]

[0104]

[0105] In the formula, represents the second sinusoidal signal, Represents the value of the mth second preset order sine function, in dimensionless units, Represents the mth second preset order, where m is a positive integer in the range of 1 to M and the unit is dimensionless. represents the second total order, is a positive integer with dimensionless units, specifically the total number of the second preset order, generally .

[0106] S15, using the first preset order, the preset filter time constant and the first total order to input into the third sine function unit for operation to obtain a third sine signal.

[0107] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the calculation method of the third sinusoidal signal can be as follows:

[0108]

[0109] In the formula, represents the third sinusoidal signal, Represents the preset filter time constant, specifically the time constant of the fastest tracking filter for regulatory engineering, in seconds.

[0110] S16, input the electrical input signal, the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal into a filter combination unit for multiplication operation to obtain a filtered signal.

[0111] It should be noted that the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal constitute the Laplace transfer function of the preset filter;

[0112] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the Laplace transfer function of the preset filter can be as follows:

[0113]

[0114] In the formula, represents the Laplace transfer function of the preset filter;

[0115] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the calculation method of the filtered signal can be as follows:

[0116]

[0117] In the formula, Represents the filtered signal.

[0118] Step 203: input the filtered signal into a preset controller for signal processing to obtain a power control signal.

[0119] Further, the preset controller is a proportional-integral-derivative controller, and step 203 may include the following sub-steps:

[0120] S21, performing multiplication operation on the filtered signal and the transfer function of the proportional-integral-differential controller to obtain a power control signal.

[0121] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, where the Laplace transfer function of the proportional integral differential controller can be as follows:

[0122]

[0123] In the formula, represents the Laplace transfer function of the PID controller, represents the controller proportional coefficient, represents the integration time, represents the differential time, Formulate the Laplace operator;

[0124] In a specific implementation, in order to facilitate the implementation of the method, the above process can be converted into a formula encapsulation form, wherein the power control signal can be calculated as follows:

[0125]

[0126] In the formula, Indicates the power control signal.

[0127] Step 204: Use the power control signal to perform power control on the target power system.

[0128] In the embodiment of the present invention, the power control signal is used to perform power control on the target power system.

[0129] Step 205: update the power control signal to a new power feedback signal in the power system signal, and jump to the step of using the power system signal and the proportional coefficient to input a preset filter for signal processing to obtain a filtered signal.

[0130] In an embodiment of the present invention, the power control signal is updated to a new power feedback signal in the power system signal, and the process jumps to the step of using the power system signal and the proportional coefficient to input a preset filter for signal processing to obtain a filtered signal.

[0131] In order to demonstrate the advantages of the preset filter of the present invention, a verification example is provided below:

[0132] Set the proportional coefficient k to k=0.5 and k=1 respectively, the upper limit of the preset number N=16, M=N. The time constant T of the regulating engineering fastest tracking filter REFTF =20s.

[0133] When the proportional coefficient k=0.5, the adjustable engineering fastest tracking filter is obtained as:

[0134]

[0135] Among them, f REFTF (s) is the Laplace transfer function of the regulating engineering fastest tracking filter; n is a positive integer ranging from 1 to 16, and the unit is dimensionless;

[0136] When the proportional coefficient k=1, the adjustable engineering fastest tracking filter is obtained as:

[0137]

[0138] Among them, f REFTF (s) is the Laplace transfer function of the adjustable engineering fastest tracking filter; n is a positive integer ranging from 1 to 16, and the unit is dimensionless.

[0139] When the proportional coefficients k=0.5 and k=1 and the input is a unit step signal, the process output characteristic PV of the regulating engineering fastest tracking filter is obtained. REFTF (t) simulation results, Figure 4 As shown, by adjusting the proportional coefficient k, the process output characteristics of the engineering fastest tracking filter can be adjusted.

[0140] When the proportional coefficients k=0.5 and k=1, the frequency domain amplitude-frequency gain characteristic G of the adjustable engineering fastest tracking filter is obtained. REFTF The simulation results of (ω) are as follows: Figure 5 As shown, by adjusting the proportional coefficient k, the frequency domain amplitude-frequency gain characteristic of the engineering fastest tracking filter can be adjusted.

[0141] In the present invention, in response to a power control request for a target power system, a power system signal and a proportional coefficient of the target power system are obtained, the power system signal and the proportional coefficient are input into a preset filter for signal processing to obtain a filter signal, the filter signal is input into a preset controller for signal processing to obtain a power control signal, and the power control signal is used to control the power of the target power system; the present invention uses the pre-acquired proportional coefficient, combined with the target power system, to input into a preset adjustable engineering fastest tracking filter to filter out noise interference, so that the filter can have a suitable gain in different frequency bands, thereby more accurately tracking the power system signal, reducing the power system signal distortion, and improving the overall tracking accuracy, thereby obtaining an accurate, smooth and stable filter signal, and then inputting the filter signal into a preset controller for signal processing, so as to obtain a power control signal for accurately controlling the target power system, and using the power control signal to control the power of the joint power system, avoiding system voltage fluctuations or equipment failures caused by insufficient power supply, and improving the stability of the joint power system. Solve the technical problem of how to improve the stability of the joint power system.

[0142] See also Figure 6 , Figure 6 This is a structural block diagram of a power control system of a combined power supply system provided in Embodiment 3 of the present invention.

[0143] The present invention provides a power control system for a combined power supply system, comprising:

[0144] A response module 301 is used to respond to a power control request for a target power system and obtain a power system signal and a proportional coefficient of the target power system;

[0145] The first signal processing module 302 is used to input the power system signal and the proportional coefficient into a preset filter for signal processing to obtain a filtered signal;

[0146] The second signal processing module 303 is used to input the filtered signal into a preset controller for signal processing to obtain a power control signal;

[0147] The power control module 304 is used to perform power control on the target power system using a power control signal.

[0148] Further, the preset filter includes an operation unit, a radian value unit, a first sine function unit, a second sine function unit, a third sine function unit and a filter combination unit, and the first signal processing module 302 includes:

[0149] The electrical input signal submodule is used to perform calculations using the power system signal input calculation unit to obtain an electrical input signal;

[0150] The sine function radian value submodule is used to use the proportional coefficient to input the radian value unit for calculation to obtain the sine function radian value;

[0151] A first sinusoidal signal submodule, configured to input a sine function radian value, a first preset order and a first total order into a first sinusoidal function unit for operation to obtain a first sinusoidal signal;

[0152] A second sinusoidal signal submodule, configured to input the radian value of the sinusoidal function, the second preset order and the second total order into a second sinusoidal function unit for operation to obtain a second sinusoidal signal;

[0153] A third sinusoidal signal submodule, configured to use the first preset order, the preset filter time constant and the first total order to input into a third sinusoidal function unit for operation to obtain a third sinusoidal signal;

[0154] The filter signal submodule is used to input the electrical input signal, the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal into the filter combination unit for multiplication operation to obtain a filter signal.

[0155] Furthermore, the power system signal includes a power input signal, a power feedback signal and a disturbance signal, and the electrical input signal submodule includes:

[0156] A first difference signal unit, configured to perform a difference operation on a power input signal and a power feedback signal input into a first operation subunit to obtain a first difference signal;

[0157] The sum operation unit is used to input the first difference signal and the disturbance signal into the second operation subunit for sum operation to obtain an electrical input signal.

[0158] Further, the preset controller is a proportional integral derivative controller, and the second signal processing module 303 includes:

[0159] The power control signal submodule is used to perform a multiplication operation on the filter signal and the transfer function of the proportional-integral-differential controller to obtain a power control signal.

[0160] Furthermore, it also includes:

[0161] The jump module is used to update the power control signal to a new power feedback signal in the power system signal, and jump to the step of using the power system signal and the proportional coefficient to input a preset filter for signal processing to obtain a filtered signal.

[0162] In the present invention, in response to a power control request for a target power system, a power system signal and a proportional coefficient of the target power system are obtained, the power system signal and the proportional coefficient are input into a preset filter for signal processing to obtain a filter signal, the filter signal is input into a preset controller for signal processing to obtain a power control signal, and the power control signal is used to control the power of the target power system; the present invention uses the pre-acquired proportional coefficient, combined with the target power system, to input into a preset adjustable engineering fastest tracking filter to filter out noise interference, so that the filter can have a suitable gain in different frequency bands, thereby more accurately tracking the power system signal, reducing the power system signal distortion, and improving the overall tracking accuracy, thereby obtaining an accurate, smooth and stable filter signal, and then inputting the filter signal into a preset controller for signal processing, so as to obtain a power control signal for accurately controlling the target power system, and using the power control signal to control the power of the joint power system, avoiding system voltage fluctuations or equipment failures caused by insufficient power supply, and improving the stability of the joint power system. Solve the technical problem of how to improve the stability of the joint power system.

[0163] See also Figure 7 , Figure 7 This is a structural block diagram of a computer device provided in Embodiment 4 of the present invention.

[0164] An electronic device according to an embodiment of the present invention includes: a memory 401 and a processor 402, wherein the memory 401 stores a computer program; when the computer program is executed by the processor 402, the processor 402 executes a power control method for a combined power supply system according to any of the above embodiments.

[0165] The memory 401 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk or a ROM. The memory 401 has a storage space 403 for a program code 413 for executing any method step in the above method. For example, the storage space 403 for the program code may include individual program codes 413 for implementing the various steps in the above method, respectively. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. The program code may be compressed, for example, in an appropriate form. When these codes are run by a computing and processing device, the computing and processing device performs the various steps in the method described above. These program codes may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. The program code may be compressed, for example, in an appropriate form. When these codes are executed by a computing and processing device, the computing and processing device is caused to execute the various steps in the power control method of the combined power system described above.

[0166] Embodiment 5 of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the power control method of the combined power supply system as described in any of the above embodiments is implemented.

[0167] Embodiment 6 of the present invention further provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer executes a power control method for a combined power supply system as in any of the above embodiments.

[0168] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0169] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of 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 an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0170] 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.

[0171] In addition, each functional unit in each embodiment of the present invention 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. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0172] If the integrated unit 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 technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0173] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power control method for a combined power supply system, characterized in that: include: In response to a power control request for a target power system, obtaining a power system signal and a proportional coefficient of the target power system; The power supply system signal and the proportional coefficient are input into a preset filter for signal processing to obtain a filtered signal; The filtered signal is input into a preset controller for signal processing to obtain a power control signal; The power control signal is used to perform power control on the target power system.

2. The power control method of the combined power supply system according to claim 1, characterized in that: The preset filter includes a calculation unit, a radian value unit, a first sine function unit, a second sine function unit, a third sine function unit and a filter combination unit. The power system signal and the proportional coefficient are input into the preset filter for signal processing to obtain a filtered signal, including: The power supply system signal is input into the operation unit for operation to obtain an electrical input signal; The proportional coefficient is input into the radian value unit for calculation to obtain the radian value of the sine function; The sine function radian value, the first preset order and the first total order are input into the first sine function unit for operation to obtain a first sine signal; The sine function radian value, the second preset order and the second total order are input into the second sine function unit for operation to obtain a second sine signal; The first preset order, the preset filter time constant and the first total order are input into a third sine function unit for operation to obtain a third sine signal; The electrical input signal, the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal are input into the filter combination unit for multiplication operation to obtain a filtered signal.

3. The power control method of the combined power supply system according to claim 2, characterized in that: The power system signal includes a power input signal, a power feedback signal and a disturbance signal, the operation unit includes a first operation subunit and a second operation subunit, and the power system signal is input into the operation unit for operation to obtain an electrical input signal, including: The power input signal and the power feedback signal are input into the first operation subunit to perform a difference operation to obtain a first difference signal; The first difference signal and the disturbance signal are input into the second operation subunit for performing a sum operation to obtain an electrical input signal.

4. The power control method of the combined power supply system according to claim 3, characterized in that: Also includes: The power control signal is updated to a new power feedback signal in the power system signal, and the step of jumping to the step of using the power system signal and the proportional coefficient to input a preset filter for signal processing to obtain a filtered signal.

5. The power control method of the combined power supply system according to any one of claims 1 to 4, characterized in that: The preset controller is a proportional-integral-differential controller, and the filtered signal is input into the preset controller for signal processing to obtain a power control signal, including: The filtered signal is multiplied by the transfer function of the proportional-integral-differential controller to obtain a power control signal.

6. A power control system for a combined power supply system, characterized in that: include: A response module, used to respond to a power control request for a target power system and obtain a power system signal and a proportional coefficient of the target power system; A first signal processing module, configured to input the power system signal and the proportional coefficient into a preset filter for signal processing to obtain a filtered signal; A second signal processing module, configured to input the filtered signal into a preset controller for signal processing to obtain a power control signal; A power control module is used to use the power control signal to perform power control on the target power system.

7. The power control system of the combined power supply system according to claim 6, characterized in that: The preset filter includes an operation unit, a radian value unit, a first sine function unit, a second sine function unit, a third sine function unit and a filter combination unit, and the first signal processing module includes: An electrical input signal submodule, used for inputting the power supply system signal into the computing unit for computing to obtain an electrical input signal; A sine function radian value submodule, used to use the proportional coefficient to input the radian value unit for calculation to obtain a sine function radian value; A first sinusoidal signal submodule, configured to input the radian value of the sinusoidal function, the first preset order and the first total order into the first sinusoidal function unit for operation to obtain a first sinusoidal signal; A second sinusoidal signal submodule, configured to input the radian value of the sinusoidal function, a second preset order and a second total order into the second sinusoidal function unit for operation to obtain a second sinusoidal signal; A third sinusoidal signal submodule, configured to use the first preset order, the preset filter time constant and the first total order to input into a third sinusoidal function unit for operation to obtain a third sinusoidal signal; The filter signal submodule is used to input the electrical input signal, the first sinusoidal signal, the second sinusoidal signal and the third sinusoidal signal into the filter combination unit for multiplication operation to obtain a filter signal.

8. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the power control method of the combined power supply system as described in any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed, the power control method of the combined power supply system according to any one of claims 1 to 5 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program stored on a non-transitory computer-readable storage medium, wherein the computer program comprises program instructions, wherein when the program instructions are executed by a computer, the computer is caused to execute the power control method of the combined power supply system as described in any one of claims 1-5.

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