Multi-stage primary frequency modulation method and device capable of adjusting load

Abstract

The present invention discloses a multi-stage primary frequency regulation method and device for an adjustable load. The method includes: obtaining the real-time frequency deviation value of the distribution network and the real-time operating load value of the charging and swapping equipment; determining the active power frequency regulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges within the adjustable range of active power; obtaining the active power adjustment amount of the adjustable load according to the active power frequency regulation coefficient; determining the power value to be sent to the charging and swapping equipment according to the active power adjustment amount and the real-time operating load value; sending the power value to the control system of the charging and swapping equipment, so as to control the charging and swapping operation of the charging and swapping equipment according to the power value through the control system. The present invention solves the technical problem in the related art that the frequency regulation coefficient of the adjustable load in different frequency intervals is not set reasonably, resulting in poor stability of the power grid system.

Description

Technical Field

[0001] The present invention relates to the technical field of primary frequency modulation control, and in particular to a multi-stage primary frequency modulation method and device capable of adjusting loads. Background Art

[0002] The existing modes of adjustable loads participating in primary frequency regulation mainly include inertia response mode, basic frequency regulation response mode and primary frequency regulation coordinated control mode based on segmented frequency regulation. Among them, for wind farms, the primary frequency regulation coordinated control mode based on segmented frequency regulation can realize the segmented participation of energy storage batteries in primary frequency regulation control of wind farms based on the required power of the wind farm and several preset battery energy storage output gears, while ensuring that the direction of the primary frequency regulation action in the initial stage is correct and the action output meets the amplitude requirements.

[0003] However, the current primary frequency regulation coordination control method based on segmented adjustment has a limited scope of use. For example, for wind farms, it can only participate in the primary frequency regulation control of wind farms for energy storage batteries, and lacks the practical application of segmented control methods for adjustable loads to participate in primary frequency regulation.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiment of the present invention provides a multi-stage primary frequency modulation method and device for an adjustable load, so as to at least solve the technical problem in the related art that the frequency modulation coefficient of the adjustable load in different frequency ranges is not set reasonably, resulting in poor stability of the power grid system.

[0006] According to one aspect of an embodiment of the present invention, a multi-stage primary frequency regulation method for an adjustable load is provided, comprising: obtaining a real-time frequency deviation value of a distribution network and a real-time operating load value of a charging and swapping device, wherein the real-time frequency deviation value is a frequency difference between an actual frequency and a standard frequency in the distribution network; within an adjustable range of active power, determining an active power frequency regulation coefficient of the adjustable load according to a matching relationship between the real-time frequency deviation value and a plurality of frequency deviation ranges; obtaining an active power adjustment amount of the adjustable load according to the active power frequency regulation coefficient; determining a power value to be sent to the charging and swapping device according to the active power adjustment amount and the real-time operating load value; and sending the power value to a control system of the charging and swapping device so as to control the charging and swapping operation of the charging and swapping device according to the power value through the control system.

[0007] Optionally, obtaining the real-time frequency deviation value of the distribution network includes: generating a frequency deviation value collection instruction; sending the frequency deviation value collection instruction to a primary frequency modulation terminal, so as to use the primary frequency modulation terminal to locally collect the real-time frequency deviation value of the distribution network; and obtaining the real-time frequency deviation value based on feedback information from the primary frequency modulation terminal.

[0008] Optionally, obtaining the real-time operating load value of the charging and swapping equipment includes one of the following: using a sensing component to collect electrical parameters on the circuit to which the charging and swapping equipment is connected, and calculating the real-time operating load value of the charging and swapping equipment based on the electrical parameters, wherein the sensing component is arranged on the circuit to which the charging and swapping equipment is connected; using a monitoring component to monitor the charging and swapping equipment, so as to obtain the real-time operating load value of the charging and swapping equipment based on the monitoring result of the monitoring component, wherein the monitoring component is connected to the charging and swapping equipment.

[0009] Optionally, within the adjustable range of active power, the active power frequency modulation coefficient of the adjustable load is determined based on the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, including: obtaining a segmented frequency modulation response model of the charging and swapping equipment; matching the real-time frequency deviation value with the multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; determining the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value in the matching result is located as the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range among the multiple frequency deviation ranges.

[0010] Optionally, obtaining the segmented frequency modulation response model of the charging and swapping equipment includes: obtaining underfrequency information and overfrequency information of the charging and swapping equipment, wherein the underfrequency information includes: an underfrequency response action dead zone threshold, an underfrequency response inflection point frequency, and an underfrequency response full response frequency, and the overfrequency information includes: an overfrequency response action dead zone threshold, an overfrequency response inflection point frequency, and an overfrequency response full response frequency; obtaining the rated frequency of the power system where the charging and swapping equipment is located; generating the multiple frequency deviation ranges according to the underfrequency information, the overfrequency information, and the rated frequency; generating a frequency modulation coefficient for each of the multiple frequency deviation ranges; and generating the segmented frequency modulation response model according to the multiple frequency deviation ranges and the corresponding frequency modulation coefficients.

[0011] Optionally, within the adjustable range of active power, before determining the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, the multi-stage primary frequency modulation method of the adjustable load also includes: when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that the primary frequency modulation terminal receives a power control instruction, determining that power regulation of the charging and swapping equipment is required.

[0012] Optionally, obtaining the active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient includes: obtaining the active power adjustment amount according to the active power frequency modulation coefficient by a power adjustment amount determination formula, wherein the power adjustment amount determination formula is: , represents the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located, Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency knee response frequency.

[0013] Optionally, the power value that needs to be sent to the charging and swapping equipment is determined based on the active power adjustment amount and the real-time operating load value, including: determining the total power of the active power adjustment amount and the real-time operating load value; determining that the total power is the power value that needs to be sent to the charging and swapping equipment.

[0014] According to another aspect of an embodiment of the present invention, a multi-stage primary frequency regulation device for an adjustable load is also provided, including: a first acquisition unit, used to acquire a real-time frequency deviation value of a distribution network and a real-time operating load value of a charging and swapping device, wherein the real-time frequency deviation value is a frequency difference between an actual frequency and a standard frequency in the distribution network; a first determination unit, used to determine an active power frequency regulation coefficient of the adjustable load within an adjustable range of active power according to a matching relationship between the real-time frequency deviation value and a plurality of frequency deviation ranges; a second acquisition unit, used to obtain an active power adjustment amount of the adjustable load according to the active power frequency regulation coefficient; a second determination unit, used to determine a power value to be sent to the charging and swapping device according to the active power adjustment amount and the real-time operating load value; a control unit, used to send the power value to a control system of the charging and swapping device, so as to control the charging and swapping operation of the charging and swapping device according to the power value through the control system.

[0015] Optionally, the first acquisition unit includes: a generation module for generating a frequency deviation value acquisition instruction; a first acquisition module for sending the frequency deviation value acquisition instruction to a primary frequency modulation terminal, so as to use the primary frequency modulation terminal to locally acquire the real-time frequency deviation value of the distribution network; and a first acquisition module for acquiring the real-time frequency deviation value based on feedback information from the primary frequency modulation terminal.

[0016] Optionally, the first acquisition unit includes one of the following: a second acquisition module, used to use an induction component to collect electrical parameters on the circuit to which the charging and swapping equipment is connected, and calculate the real-time operating load value of the charging and swapping equipment based on the electrical parameters, wherein the induction component is arranged on the circuit to which the charging and swapping equipment is connected; a second acquisition module, used to monitor the charging and swapping equipment using a monitoring component, so as to obtain the real-time operating load value of the charging and swapping equipment based on the monitoring result of the monitoring component, wherein the monitoring component is connected to the charging and swapping equipment.

[0017] Optionally, the first determination unit includes: a third acquisition module, used to obtain the segmented frequency modulation response model of the charging and swapping equipment; a matching module, used to match the real-time frequency deviation value with the multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; a first determination module, used to determine that the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value in the matching result is located is the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range among the multiple frequency deviation ranges.

[0018] Optionally, the third acquisition module includes: a first acquisition submodule, used to acquire underfrequency information and overfrequency information of the charging and swapping equipment, wherein the underfrequency information includes: an underfrequency response action dead zone threshold, an underfrequency response inflection point frequency, and an underfrequency response full response frequency; the overfrequency information includes: an overfrequency response action dead zone threshold, an overfrequency response inflection point frequency, and an overfrequency response full response frequency; a second acquisition submodule, used to acquire the rated frequency of the power system where the charging and swapping equipment is located; a first generation submodule, used to generate the multiple frequency deviation ranges according to the underfrequency information, the overfrequency information, and the rated frequency; a second generation submodule, used to generate a frequency modulation coefficient for each of the multiple frequency deviation ranges; a third generation submodule, used to generate the segmented frequency modulation response model according to the multiple frequency deviation ranges and the corresponding frequency modulation coefficients.

[0019] Optionally, the multi-stage primary frequency regulation device for the adjustable load also includes: a third determination unit, which is used to determine the need to perform power regulation on the charging and swapping equipment before determining the active power frequency regulation coefficient of the adjustable load within the adjustable range of active power according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that the primary frequency regulation terminal receives a power control instruction.

[0020] Optionally, the second acquisition unit includes: a second determination module, configured to obtain the active power adjustment amount according to the active power frequency modulation coefficient by a power adjustment amount determination formula, wherein the power adjustment amount determination formula is: , represents the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located, Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency knee response frequency.

[0021] Optionally, the second determination unit includes: a third determination module, used to determine the total power of the active power adjustment amount and the real-time operating load value; and a fourth determination module, used to determine that the total power is the power value that needs to be sent to the charging and swapping equipment.

[0022] According to another aspect of an embodiment of the present invention, a multi-stage primary frequency modulation system for an adjustable load is provided. The multi-stage primary frequency modulation system for an adjustable load uses any one of the multi-stage primary frequency modulation methods for an adjustable load described above.

[0023] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein the program executes any one of the above-mentioned multi-stage primary frequency modulation methods for an adjustable load.

[0024] According to another aspect of an embodiment of the present invention, a processor is provided, wherein the processor is used to run a program, wherein the program executes any one of the above-mentioned multi-stage primary frequency modulation methods for adjustable loads when running.

[0025] According to another aspect of an embodiment of the present invention, a computer program product is provided, comprising computer instructions, which, when executed by a processor, perform any one of the above-mentioned multi-stage primary frequency modulation methods for an adjustable load.

[0026] In an embodiment of the present invention, a real-time frequency deviation value of the distribution network and a real-time operating load value of the charging and swapping equipment are obtained, wherein the real-time frequency deviation value is the frequency difference between the actual frequency and the standard frequency in the distribution network; within the adjustable range of active power, the active power frequency modulation coefficient of the adjustable load is determined according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges; the active power adjustment amount of the adjustable load is obtained according to the active power frequency modulation coefficient; the power value that needs to be sent to the charging and swapping equipment is determined according to the active power adjustment amount and the real-time operating load value; the power value is sent to the control system of the charging and swapping equipment, so that the charging and swapping operation of the charging and swapping equipment is controlled according to the power value through the control system. Through the above-mentioned technical scheme provided by the present invention, it is achieved that the active power regulation coefficient of the adjustable load can be determined within the adjustable range of the active power according to the real-time frequency deviation value of the distribution network. After the active power adjustment amount of the adjustable load is obtained according to the active power frequency regulation coefficient, the real-time operating load value of the charging and swapping equipment is used to obtain the power value that needs to be sent to the charging and swapping equipment so as to control the charging and swapping operation of the charging and swapping equipment according to the power value, thereby improving the stability of the power grid system and further solving the technical problem in the related art that the frequency regulation coefficient of the adjustable load in different frequency ranges is not set reasonably, resulting in poor stability of the power grid system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 It is a hardware structure block diagram of a mobile terminal of a multi-stage primary frequency modulation method capable of adjusting loads according to an embodiment of the present invention;

[0029] Figure 2 is a flow chart of a multi-stage primary frequency modulation method for adjustable loads according to an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of a segmented frequency modulation response model according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of a multi-stage primary frequency modulation device capable of adjusting loads according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 described embodiments 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 should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] As introduced in the background technology, the frequency modulation coefficient of the adjustable load in different frequency ranges in the related art is not set reasonably, resulting in poor stability of the power grid system. In view of the above defects, an adjustable load multi-stage primary frequency modulation method and device, an adjustable load multi-stage primary frequency modulation system, a computer-readable storage medium, a processor and a computer program product are provided in the embodiments of the present invention.

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] The method embodiments provided in the embodiments of the present invention can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 1 is a hardware structure block diagram of a mobile terminal of a multi-stage primary frequency modulation method capable of adjusting loads according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0037] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the multi-stage primary frequency modulation method of adjustable load in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, to implement the above method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories may be connected to the mobile terminal via a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0038] According to an embodiment of the present invention, a method embodiment of a multi-stage primary frequency modulation method for an adjustable load is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0039] Figure 2 is a flow chart of a multi-stage primary frequency modulation method for adjustable load according to an embodiment of the present invention. Figure 2 As shown, the multi-stage primary frequency modulation method for adjustable load includes the following steps:

[0040] Step S202, obtaining the real-time frequency deviation value of the distribution network and the real-time operating load value of the charging and swapping equipment, wherein the real-time frequency deviation value is the frequency difference between the actual frequency and the standard frequency in the distribution network.

[0041] In this embodiment, the real-time frequency deviation value of the distribution network in the power system can be obtained, that is, the frequency deviation value between the actual frequency and the standard frequency in the distribution network; at the same time, the real-time operating load value of the charging and swapping equipment can be obtained.

[0042] Here, the real-time frequency deviation value of the distribution network and the real-time operating load value of the charging and swapping equipment can be collected at a certain frequency. In this embodiment, the collection frequency is not specifically limited and can be set according to actual needs.

[0043] In addition, the increase ratio and decrease ratio of the charging load of the above-mentioned charging and swapping equipment can be input by the user according to actual conditions.

[0044] Step S204: within the adjustable range of active power, determine the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and the plurality of frequency deviation ranges.

[0045] Optionally, the adjustable range of active power here can be set according to specific equipment and systems, and the adjustable range is usually from the minimum power to the maximum power. For example, for electronic equipment and electrical equipment, the adjustable range may be from a few watts to a few kilowatts; for power equipment such as generators and transformers, the adjustable range may be from a few kilowatts to a few megawatts. In general, the adjustable range of active power depends on the design and performance parameters of the equipment.

[0046] In this embodiment, the active power frequency regulation coefficient of the adjustable load can be determined within the active power regulation range according to the matching relationship between the real-time frequency deviation value obtained above and the multiple frequency deviation ranges.

[0047] Step S206, obtaining the active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient.

[0048] In this embodiment, the adjustable active power adjustment amount can be determined according to the active power frequency modulation coefficient determined above, so as to subsequently determine the power value that needs to be sent to the charging and swapping equipment.

[0049] Step S208: Determine the power value that needs to be sent to the charging and swapping equipment based on the active power adjustment amount and the real-time operating load value.

[0050] In this embodiment, after the active power adjustment amount and the real-time operating load of the charging and swapping equipment are determined through the above steps, the power value that needs to be sent to the charging and swapping equipment can be determined based on the active power adjustment amount and the real-time operating load value.

[0051] Step S210, sending the power value to the control system of the charging and swapping equipment, so as to control the charging and swapping operation of the charging and swapping equipment according to the power value through the control system.

[0052] In this embodiment, the above-determined power value can be sent to the control system of the charging and swapping equipment, so that the charging and swapping group of the charging and swapping equipment can be controlled according to the power value through its control system.

[0053] Here, the above-determined power value can also be sent to the control circuit of the charging and swapping equipment to complete the control of the charging and swapping equipment.

[0054] As can be seen from the above, in the embodiment of the present invention, first, the real-time frequency deviation value of the distribution network and the real-time operating load value of the charging and swapping equipment can be obtained, wherein the real-time frequency deviation value is the frequency difference between the actual frequency and the standard frequency in the distribution network; then, within the adjustable range of active power, the active power frequency modulation coefficient of the adjustable load can be determined according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges; then, the active power adjustment amount of the adjustable load can be obtained according to the active power frequency modulation coefficient; and then, the active power adjustment amount and the real-time operating load value can be determined to be sent to the charging and swapping equipment. The power value of the equipment is determined; and the power value is sent to the control system of the charging and swapping equipment, so that the charging and swapping operation of the charging and swapping equipment can be controlled by the control system according to the power value, thereby realizing that the active power regulation coefficient of the adjustable load can be determined within the adjustable range of the active power according to the real-time frequency deviation value of the distribution network. After the active power adjustment amount of the adjustable load is obtained according to the active power frequency regulation coefficient, the real-time operating load value of the charging and swapping equipment is then used to obtain the power value that needs to be sent to the charging and swapping equipment, so as to control the charging and swapping operation of the charging and swapping equipment according to the power value, thereby improving the stability of the power grid system.

[0055] It should be noted that, in the embodiment of the present invention, different frequency modulation coefficients are set for different frequency deviation ranges according to the real-time frequency deviation value of the distribution network, so as to achieve real-time tracking and response of the primary frequency modulation demand of the power system.

[0056] Therefore, the above technical solution provided by the embodiment of the present invention solves the technical problem in the related art that the frequency modulation coefficient of the adjustable load in different frequency ranges is not set reasonably, resulting in poor stability of the power grid system.

[0057] According to the above embodiment of the present invention, obtaining the real-time frequency deviation value of the distribution network may include: generating a frequency deviation value collection instruction; sending the frequency deviation value collection instruction to the primary frequency modulation terminal to use the primary frequency modulation terminal to locally collect the real-time frequency deviation value of the distribution network; and obtaining the real-time frequency deviation value based on feedback information from the primary frequency modulation terminal.

[0058] In this embodiment, the control system can generate a frequency deviation value acquisition instruction, and then send the frequency deviation value acquisition instruction to the primary frequency modulation terminal, so that the primary frequency modulation terminal locally collects the real-time frequency deviation value of the distribution network. By locally collecting the required data, the frequency modulation capability of the adjustable load in different frequency intervals can be quickly called, thereby improving the efficiency of the primary frequency modulation.

[0059] According to the above-mentioned embodiment of the present invention, obtaining the real-time operating load value of the charging and swapping equipment may include one of the following: using a sensing component to collect electrical parameters on the circuit to which the charging and swapping equipment is connected, and calculating the real-time operating load value of the charging and swapping equipment based on the electrical parameters, wherein the sensing component is arranged on the circuit to which the charging and swapping equipment is connected; using a monitoring component to monitor the charging and swapping equipment, so as to obtain the real-time operating load value of the charging and swapping equipment based on the monitoring result of the monitoring component, wherein the monitoring component is connected to the charging and swapping equipment.

[0060] In this embodiment, the real-time operating load value of the charging and swapping device can be obtained in a variety of ways. For example, an induction component can be set on the circuit to which the charging and swapping device is connected to collect the electrical parameters of the charging and swapping device, and then the real-time operating load value of the charging and swapping device can be calculated based on the collected electrical parameters. For another example, the charging and swapping device can also be connected to a monitoring component, and then the monitoring component can be used to monitor the charging and swapping device to obtain its real-time operating load value.

[0061] According to the above embodiment of the present invention, within the adjustable range of active power, the active power frequency modulation coefficient of the adjustable load is determined according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, which may include: obtaining a segmented frequency modulation response model of the charging and swapping equipment; matching the real-time frequency deviation value with multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; determining that the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value in the matching result is located is the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range among the multiple frequency deviation ranges.

[0062] In this embodiment, the segmented frequency modulation response model of the charging and swapping equipment can be called in advance, and then the real-time frequency deviation value obtained above can be matched with multiple frequency deviation ranges of the segmented frequency modulation response model, and then the active power frequency modulation coefficient can be obtained according to the matching result.

[0063] According to the above embodiment of the present invention, obtaining a segmented frequency modulation response model of a charging and swapping device may include: obtaining underfrequency information and overfrequency information of the charging and swapping device, wherein the underfrequency information includes: an underfrequency response action dead zone threshold, an underfrequency response inflection point frequency, and an underfrequency response full response frequency, and the overfrequency information includes: an overfrequency response action dead zone threshold, an overfrequency response inflection point frequency, and an overfrequency response full response frequency; obtaining the rated frequency of the power system where the charging and swapping device is located; generating multiple frequency deviation ranges based on the underfrequency information, the overfrequency information, and the rated frequency; generating a frequency modulation coefficient for each of the multiple frequency deviation ranges; and generating a segmented frequency modulation response model based on the multiple frequency deviation ranges and the corresponding frequency modulation coefficients.

[0064] In this embodiment, the underfrequency information (for example, the underfrequency response action dead zone threshold, the underfrequency response inflection point frequency, and the underfrequency response full response frequency) and overfrequency information (for example, the overfrequency response action dead zone threshold, the overfrequency response inflection point frequency, and the overfrequency response full response frequency) of the charging and swapping equipment can be acquired in advance; then, a plurality of frequency deviation ranges for generating a segmented frequency modulation response model are determined based on the acquired underfrequency information and overfrequency information; a frequency modulation coefficient can be set for each of the plurality of frequency deviation ranges; finally, the plurality of frequency deviation ranges and their corresponding frequency modulation coefficients are matched to obtain a segmented frequency modulation response model.

[0065] Figure 3 is a schematic diagram of a segmented frequency modulation response model according to an embodiment of the present invention, such as Figure 3 As shown, in the segmented frequency modulation response model, the rated frequency of the power system where the charging and swapping equipment is located corresponds to the coordinate origin, the grid connection point frequency is the horizontal axis, and the power value is the vertical axis; wherein, the underfrequency response stage and the overfrequency response stage are located on the left and right sides of the coordinate origin respectively; wherein, the underfrequency response stage is divided into underfrequency response stage I (i.e., the first underfrequency response stage described below) and underfrequency response stage II (i.e., the second underfrequency response stage described below) based on the underfrequency response action dead zone threshold, the underfrequency response inflection point frequency, and the underfrequency response full response frequency, the underfrequency response action dead zone threshold and the overfrequency response action dead zone threshold correspond to the frequency response action dead zone (i.e., the range corresponding to the interval between the underfrequency response stage I and the overfrequency response stage I), and the overfrequency response stage is divided into overfrequency response stage I (i.e., the first overfrequency response stage described below) and overfrequency response stage II (i.e., the second overfrequency response stage described below) based on the overfrequency response action dead zone threshold, the overfrequency response inflection point frequency, and the overfrequency response full response frequency. Among them, under-frequency response section I and under-frequency response section II, frequency response action dead zone, over-frequency response section I and over-frequency response section II correspond to the above-mentioned multiple frequency deviation ranges.

[0066] In addition, if Figure 3 As shown, different frequency deviation ranges correspond to different frequency modulation coefficients.

[0067] That is, in the embodiment of the present invention, a segmented frequency modulation response model of the charging and swapping equipment can be formulated in the above manner. Under the segmented frequency modulation response model, the adjustable load can adjust the active power in different frequency deviation ranges according to the frequency deviation value within the adjustable range of active power. Compared with the conventional straight line method, different requirements for primary frequency modulation of the adjustable load can be considered in different frequency response stages, which is more practical and has a wider range of application.

[0068] According to the above-mentioned embodiment of the present invention, within the adjustable range of active power, before determining the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, the multi-stage primary frequency modulation method of the adjustable load may also include: when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that the primary frequency modulation terminal receives a power control instruction, determining that power regulation of the charging and swapping equipment is required.

[0069] In this embodiment, when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that a frequency modulation terminal has received a power control instruction, it can be determined that the charging and swapping equipment needs to be power regulated.

[0070] That is, when the primary frequency regulation terminal calculates the real-time frequency value of the power grid based on the real-time collected electrical quantity signal, and monitors in real time that the distribution network frequency |△f| is greater than the limit value (i.e., the frequency deviation threshold), it starts to calculate the adjustment power (the first power regulation determination method). In addition, when the superior dispatching department sends a specific power control instruction to the primary frequency regulation terminal, it can also directly execute the adjustment power (the second power regulation determination method).

[0071] It should be noted that in the above embodiment of the present invention, when the above two situations occur at the same time, the second power adjustment determination method has a higher priority than the first power adjustment determination method. That is, when the above two situations occur at the same time, the second power adjustment determination method is given priority.

[0072] According to the above embodiment of the present invention, obtaining the active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient includes: obtaining the active power adjustment amount according to the active power frequency modulation coefficient by a power adjustment amount determination formula, wherein the power adjustment amount determination formula is: , Indicates the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located. Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency knee response frequency.

[0073] In this embodiment, the active power adjustment amount can be determined according to the above power adjustment amount determination formula. That is, when the real-time frequency deviation value is in different frequency deviation ranges, the corresponding active power adjustment amount is different. Through this staged calculation method, the accuracy of the active power adjustment amount calculation can be improved.

[0074] By segmenting the under-frequency stage and the over-frequency stage as described above, the multi-stage primary frequency modulation is realized by calculating the active power adjustment amount of the adjustable load in stages. While ensuring the rationality of power regulation, the amount of data obtained and the calculation process are reduced, making the calculation method efficient and universally applicable; moreover, this segmented frequency regulation response model uses different frequency regulation coefficients to calculate the active power adjustment amount of the adjustable load under different frequency deviation ranges, which is more practical.

[0075] According to the above embodiment of the present invention, the power value that needs to be sent to the charging and swapping equipment is determined based on the active power adjustment amount and the real-time operating load value, including: determining the total power of the active power adjustment amount and the real-time operating load value; determining the total power as the power value that needs to be sent to the charging and swapping equipment.

[0076] In this embodiment, the power sum of the active power adjustment amount and the real-time operating load value calculated above can be sent to the power value of the charging and swapping equipment to control the charging and swapping operation of the charging and swapping equipment based on the power value. That is, the primary frequency modulation terminal sends the power value to the control loop or control system of the charging and swapping facility through the communication interface to complete the control of the charging and swapping operation of the charging and swapping equipment.

[0077] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0078] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0079] According to an embodiment of the present invention, there is also provided a multi-stage primary frequency modulation device for an adjustable load for implementing the multi-stage primary frequency modulation method for an adjustable load. Figure 4 is a schematic diagram of a multi-stage primary frequency modulation device capable of adjusting loads according to an embodiment of the present invention. Figure 4 As shown, the multi-stage primary frequency modulation device for adjustable load includes: a first acquisition unit 401, a first determination unit 403, a second acquisition unit 405, a second determination unit 407 and a control unit 409. The multi-stage primary frequency modulation device for adjustable load is described below.

[0080] The first acquisition unit 401 is used to obtain the real-time frequency deviation value of the distribution network and the real-time operating load value of the charging and swapping equipment, wherein the real-time frequency deviation value is the frequency difference between the actual frequency and the standard frequency in the distribution network.

[0081] The first determining unit 403 is used to determine the active power frequency modulation coefficient of the adjustable load within the adjustable range of active power according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges.

[0082] The second acquisition unit 405 is used to obtain the active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient.

[0083] The second determination unit 407 is used to determine the power value that needs to be sent to the charging and swapping equipment according to the active power adjustment amount and the real-time operating load value.

[0084] The control unit 409 is used to send the power value to the control system of the charging and swapping equipment, so as to control the charging and swapping operation of the charging and swapping equipment according to the power value through the control system.

[0085] It should be noted here that the above-mentioned first acquisition unit 401, first determination unit 403, second acquisition unit 405, second determination unit 407 and control unit 409 correspond to steps S202 to S210 in the above-mentioned embodiments, and the five units are the same as the instances and application scenarios implemented by the corresponding steps, but are not limited to the contents disclosed in the above-mentioned embodiments.

[0086] From the above, it can be seen that in the scheme recorded in the above-mentioned embodiment of the present invention, the first acquisition unit can be used to obtain the real-time frequency deviation value of the distribution network and the real-time operating load value of the charging and swapping equipment, wherein the real-time frequency deviation value is the frequency difference between the actual frequency and the standard frequency in the distribution network; the first determination unit is used to determine the active power frequency modulation coefficient of the adjustable load within the adjustable range of active power according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges; the second acquisition unit is used to obtain the active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient; the second determination unit is used to determine the active power adjustment amount according to the active power adjustment amount and the real-time operating load value. Determine the power value that needs to be sent to the charging and swapping equipment; use the control unit to send the power value to the control system of the charging and swapping equipment, so that the charging and swapping operation of the charging and swapping equipment can be controlled by the control system according to the power value, thereby realizing that the active power regulation coefficient of the adjustable load can be determined within the adjustable range of the active power according to the real-time frequency deviation value of the distribution network. After the active power adjustment amount of the adjustable load is obtained according to the active power frequency regulation coefficient, the real-time operating load value of the charging and swapping equipment is used to obtain the power value that needs to be sent to the charging and swapping equipment, so as to control the charging and swapping operation of the charging and swapping equipment according to the power value, thereby improving the stability of the power grid system.

[0087] It should be noted that, in the embodiment of the present invention, different frequency modulation coefficients are set for different frequency deviation ranges according to the real-time frequency deviation value of the distribution network, so as to achieve real-time tracking and response of the primary frequency modulation demand of the power system.

[0088] Therefore, the above technical solution provided by the embodiment of the present invention solves the technical problem in the related art that the frequency modulation coefficient of the adjustable load in different frequency ranges is not set reasonably, resulting in poor stability of the power grid system.

[0089] Optionally, the first acquisition unit includes: a generation module for generating a frequency deviation value acquisition instruction; a first acquisition module for sending the frequency deviation value acquisition instruction to the primary frequency modulation terminal, so as to use the primary frequency modulation terminal to locally acquire the real-time frequency deviation value of the distribution network; and a first acquisition module for acquiring the real-time frequency deviation value based on the feedback information of the primary frequency modulation terminal.

[0090] Optionally, the first acquisition unit includes one of the following: a second acquisition module, used to use a sensing component to collect electrical parameters on the circuit to which the charging and swapping equipment is connected, and calculate the real-time operating load value of the charging and swapping equipment based on the electrical parameters, wherein the sensing component is arranged on the circuit to which the charging and swapping equipment is connected; the second acquisition module, used to monitor the charging and swapping equipment using a monitoring component, so as to obtain the real-time operating load value of the charging and swapping equipment based on the monitoring result of the monitoring component, wherein the monitoring component is connected to the charging and swapping equipment.

[0091] Optionally, the first determination unit includes: a third acquisition module, used to obtain a segmented frequency modulation response model of the charging and swapping equipment; a matching module, used to match the real-time frequency deviation value with multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; a first determination module, used to determine that the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value in the matching result is located is the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range among multiple frequency deviation ranges.

[0092] Optionally, the third acquisition module includes: a first acquisition sub-module, used to obtain underfrequency information and overfrequency information of the charging and swapping equipment, wherein the underfrequency information includes: underfrequency response action dead zone threshold, underfrequency response inflection point frequency and underfrequency response full response frequency, and the overfrequency information includes: overfrequency response action dead zone threshold, overfrequency response inflection point frequency and overfrequency response full response frequency; a second acquisition sub-module, used to obtain the rated frequency of the power system where the charging and swapping equipment is located; a first generation sub-module, used to generate multiple frequency deviation ranges according to the underfrequency information, overfrequency information and rated frequency; a second generation sub-module, used to generate a frequency modulation coefficient for each of the multiple frequency deviation ranges; a third generation sub-module, used to generate a segmented frequency modulation response model according to the multiple frequency deviation ranges and the corresponding frequency modulation coefficients.

[0093] Optionally, the multi-stage primary frequency regulation device for the adjustable load also includes: a third determination unit, which is used to determine the need to perform power regulation on the charging and swapping equipment before determining the active power frequency regulation coefficient of the adjustable load within the adjustable range of active power according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that the primary frequency regulation terminal receives a power control instruction.

[0094] Optionally, the second acquisition unit includes: a second determination module, configured to obtain the active power adjustment amount according to the active power frequency modulation coefficient by a power adjustment amount determination formula, wherein the power adjustment amount determination formula is: , Indicates the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located. Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency knee response frequency.

[0095] Optionally, the second determination unit includes: a third determination module, used to determine the total power of the active power adjustment amount and the real-time operating load value; and a fourth determination module, used to determine that the total power is the power value that needs to be sent to the charging and swapping equipment.

[0096] According to another aspect of an embodiment of the present invention, a multi-stage primary frequency modulation system for an adjustable load is provided. The multi-stage primary frequency modulation system for an adjustable load uses any of the above-mentioned multi-stage primary frequency modulation methods for an adjustable load.

[0097] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein the program executes any one of the above-mentioned multi-stage primary frequency modulation methods for an adjustable load.

[0098] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the communication devices in a communication device group.

[0099] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: obtaining a real-time frequency deviation value of the distribution network and a real-time operating load value of the charging and swapping equipment, wherein the real-time frequency deviation value is the frequency difference between the actual frequency and the standard frequency in the distribution network; within the adjustable range of active power, determining the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges; obtaining the active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient; determining the power value that needs to be sent to the charging and swapping equipment according to the active power adjustment amount and the real-time operating load value; and sending the power value to the control system of the charging and swapping equipment so as to control the charging and swapping operation of the charging and swapping equipment according to the power value through the control system.

[0100] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: generating a frequency deviation value acquisition instruction; sending the frequency deviation value acquisition instruction to a primary frequency modulation terminal to locally acquire the real-time frequency deviation value of the distribution network using the primary frequency modulation terminal; and obtaining the real-time frequency deviation value based on feedback information from the primary frequency modulation terminal.

[0101] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: using a sensing component to collect electrical parameters on the circuit to which the charging and swapping equipment is connected, and calculating a real-time operating load value of the charging and swapping equipment based on the electrical parameters, wherein the sensing component is arranged on the circuit to which the charging and swapping equipment is connected; using a monitoring component to monitor the charging and swapping equipment to obtain the real-time operating load value of the charging and swapping equipment based on the monitoring results of the monitoring component, wherein the monitoring component is connected to the charging and swapping equipment.

[0102] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: obtaining a segmented frequency modulation response model of the charging and swapping equipment; matching the real-time frequency deviation value with multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; determining that the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value in the matching result is located is the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range among the multiple frequency deviation ranges.

[0103] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: obtaining underfrequency information and overfrequency information of the charging and swapping equipment, wherein the underfrequency information includes: underfrequency response action dead zone threshold, underfrequency response inflection point frequency and underfrequency response full response frequency, and the overfrequency information includes: overfrequency response action dead zone threshold, overfrequency response inflection point frequency and overfrequency response full response frequency; obtaining the rated frequency of the power system where the charging and swapping equipment is located; generating multiple frequency deviation ranges based on the underfrequency information, overfrequency information and rated frequency; generating a frequency modulation coefficient for each of the multiple frequency deviation ranges; and generating a segmented frequency modulation response model based on the multiple frequency deviation ranges and the corresponding frequency modulation coefficients.

[0104] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: within the adjustable range of active power, before determining the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that a frequency modulation terminal receives a power control instruction, it is determined that power regulation of the charging and swapping equipment is required.

[0105] Optionally, in this embodiment, the computer-readable storage medium is configured to store a program code for executing the following steps: obtaining the active power adjustment amount by a power adjustment amount determination formula according to the active power frequency modulation coefficient, wherein the power adjustment amount determination formula is: , Indicates the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located. Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency knee response frequency.

[0106] Optionally, in this embodiment, the computer-readable storage medium is configured to store program codes for executing the following steps: determining the sum of the power of the active power adjustment amount and the real-time operating load value; determining the sum of the power as the power value that needs to be sent to the charging and swapping equipment.

[0107] According to another aspect of an embodiment of the present invention, a processor is provided, and the processor is used to run a program, wherein when the program is run, any one of the above-mentioned multi-stage primary frequency modulation methods for adjustable loads is executed.

[0108] According to another aspect of an embodiment of the present invention, a computer program product is provided, comprising computer instructions, which, when executed by a processor, perform any one of the above-mentioned multi-stage primary frequency modulation methods for adjustable loads.

[0109] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0110] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0111] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be 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 interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0112] 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 units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0113] 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.

[0114] 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 method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0115] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-stage primary frequency modulation method capable of adjusting load, characterized in that: include: Obtaining a real-time frequency deviation value of the distribution network and a real-time operating load value of the charging and swapping equipment, wherein the real-time frequency deviation value is a frequency difference between an actual frequency and a standard frequency in the distribution network; Within the adjustable range of active power, determining the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and the multiple frequency deviation ranges; Among them, within the adjustable range of active power, the active power frequency modulation coefficient of the adjustable load is determined according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, including: obtaining the segmented frequency modulation response model of the charging and swapping equipment; matching the real-time frequency deviation value with the multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; determining the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value in the matching result is located as the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range among the multiple frequency deviation ranges; Wherein, obtaining the segmented frequency modulation response model of the charging and swapping equipment includes: obtaining the underfrequency information and overfrequency information of the charging and swapping equipment, wherein the underfrequency information includes: the underfrequency response action dead zone threshold, the underfrequency response inflection point frequency and the underfrequency response full response frequency, and the overfrequency information includes: the overfrequency response action dead zone threshold, the overfrequency response inflection point frequency and the overfrequency response full response frequency; obtaining the rated frequency of the power system where the charging and swapping equipment is located; generating the multiple frequency deviation ranges according to the underfrequency information, the overfrequency information and the rated frequency; generating the frequency modulation coefficient for each of the multiple frequency deviation ranges; generating the segmented frequency modulation response model according to the multiple frequency deviation ranges and the corresponding frequency modulation coefficients; Obtaining an active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient; The active power adjustment amount of the adjustable load is obtained according to the active power frequency modulation coefficient, including: obtaining the active power adjustment amount according to the active power frequency modulation coefficient by a power adjustment amount determination formula, wherein the power adjustment amount determination formula is: , represents the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located, Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates the under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency inflection point response frequency; Determine the power value that needs to be sent to the charging and swapping equipment according to the active power adjustment amount and the real-time operating load value; The power value is sent to the control system of the charging and swapping device, so that the charging and swapping operation of the charging and swapping device can be controlled by the control system according to the power value.

2. The multi-stage primary frequency modulation method for adjustable load according to claim 1, characterized in that: Get the real-time frequency deviation value of the distribution network, including: Generate frequency deviation value acquisition instruction; The frequency deviation value collection instruction is sent to a primary frequency modulation terminal, so as to use the primary frequency modulation terminal to locally collect the real-time frequency deviation value of the distribution network; The real-time frequency deviation value is obtained based on feedback information from the primary frequency modulation terminal.

3. The multi-stage primary frequency modulation method for adjustable load according to claim 1, characterized in that: Obtain the real-time operating load value of the charging and swapping equipment, including one of the following: Using an induction component to collect electrical parameters on the circuit to which the charging and swapping device is connected, and calculating the real-time operating load value of the charging and swapping device based on the electrical parameters, wherein the induction component is arranged on the circuit to which the charging and swapping device is connected; The charging and swapping equipment is monitored by using a monitoring component to obtain the real-time operating load value of the charging and swapping equipment based on the monitoring result of the monitoring component, wherein the monitoring component is connected to the charging and swapping equipment.

4. The multi-stage primary frequency modulation method for adjustable load according to claim 1, characterized in that: Within the adjustable range of active power, before determining the active power frequency modulation coefficient of the adjustable load according to the matching relationship between the real-time frequency deviation value and multiple frequency deviation ranges, it also includes: when it is determined that the real-time frequency deviation value is greater than the frequency deviation threshold or when it is determined that a frequency modulation terminal receives a power control instruction, it is determined that power regulation of the charging and swapping equipment is required.

5. The multi-stage primary frequency modulation method for adjustable load according to any one of claims 1 to 4, characterized in that: Determining the power value to be sent to the charging and swapping device according to the active power adjustment amount and the real-time operating load value includes: Determining the power sum of the active power adjustment amount and the real-time operating load value; Determine that the total power is the power value that needs to be sent to the charging and swapping equipment.

6. A multi-stage primary frequency modulation device capable of adjusting load, characterized in that: include: A first acquisition unit is used to acquire a real-time frequency deviation value of the distribution network and a real-time operating load value of the charging and swapping equipment, wherein the real-time frequency deviation value is a frequency difference between an actual frequency and a standard frequency in the distribution network; A first determining unit, configured to determine an active power frequency modulation coefficient of an adjustable load according to a matching relationship between the real-time frequency deviation value and a plurality of frequency deviation ranges within an adjustable range of active power; Among them, the first determination unit includes: a third acquisition module, which is used to obtain the segmented frequency modulation response model of the charging and swapping equipment; a matching module, which is used to match the real-time frequency deviation value with the multiple frequency deviation ranges of the segmented frequency modulation response model to obtain a matching result; a first determination module, which is used to determine that the frequency modulation coefficient corresponding to the target frequency deviation range where the real-time frequency deviation value is located in the matching result is the active power frequency modulation coefficient, wherein the target frequency deviation range is a frequency deviation range in the multiple frequency deviation ranges; Wherein, the third acquisition module includes: a first acquisition submodule, used to obtain the underfrequency information and overfrequency information of the charging and swapping equipment, wherein the underfrequency information includes: the underfrequency response action dead zone threshold, the underfrequency response inflection point frequency and the underfrequency response full response frequency, and the overfrequency information includes: the overfrequency response action dead zone threshold, the overfrequency response inflection point frequency and the overfrequency response full response frequency; a second acquisition submodule, used to obtain the rated frequency of the power system where the charging and swapping equipment is located; a first generation submodule, used to generate the multiple frequency deviation ranges according to the underfrequency information, the overfrequency information and the rated frequency; a second generation submodule, used to generate the frequency modulation coefficient of each of the multiple frequency deviation ranges; a third generation submodule, used to generate the segmented frequency modulation response model according to the multiple frequency deviation ranges and the corresponding frequency modulation coefficients; A second acquisition unit, configured to obtain an active power adjustment amount of the adjustable load according to the active power frequency modulation coefficient; The second acquisition unit includes: a second determination module, configured to obtain the active power adjustment amount according to the active power frequency modulation coefficient through a power adjustment amount determination formula, wherein the power adjustment amount determination formula is: , represents the active power adjustment amount, Indicates the rated frequency of the power system where the charging and swapping equipment is located, Indicates the frequency of the grid connection point, represents the under-frequency contract response power, represents the under-frequency inflection point response power, Indicates the active frequency modulation coefficient in the first underfrequency response stage, Indicates the active frequency modulation coefficient in the second underfrequency response stage, Indicates the under-frequency response and full response frequency, Indicates the dead zone threshold of under-frequency response action. represents the inflection point frequency of the underfrequency response, Indicates the dead zone threshold of over-frequency response action. Indicates the over-frequency inflection point response frequency, Indicates the over-frequency response full response frequency, Indicates the active frequency modulation coefficient in the first overfrequency response stage, Indicates the active frequency modulation coefficient in the second overfrequency response stage, Indicates the over-frequency contract response power, Indicates the over-frequency inflection point response frequency; A second determining unit, configured to determine a power value to be sent to the charging and swapping device according to the active power adjustment amount and the real-time operating load value; A control unit is used to send the power value to the control system of the charging and swapping equipment, so as to control the charging and swapping operation of the charging and swapping equipment according to the power value through the control system.

7. A computer program product comprising computer instructions, characterized in that When the computer instructions are executed by a processor, the multi-stage primary frequency modulation method for an adjustable load as claimed in any one of claims 1 to 5 is performed.

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