Generator set combined frequency modulation method and related equipment

Abstract

The invention relates to the technical field of thermal power generating unit frequency modulation, and particularly provides a generator set joint frequency modulation method and related equipment, and the method comprises the steps: obtaining the control information of a target generator set and the actual power generation data of the target generator set, and the control information at least comprises preset electric quantity data; calculating electric quantity data of a hybrid energy storage system corresponding to the target generator set based on the preset electric quantity data and the actual power generation data; acquiring state data of a power grid corresponding to the target generator set, and judging a working mode of the hybrid energy storage system based on the state data and a preset rule; and generating a working strategy of the hybrid energy storage system according to the working mode and the electric quantity data, and completing frequency modulation based on the working strategy.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power generation unit frequency regulation, and in particular to a generator set joint frequency regulation method and related equipment. Background Art

[0002] A high proportion of new energy power systems has led to a gradual reduction in the frequency regulation resources of conventional units with mechanical inertia; on the other hand, the power load has become increasingly complex and unpredictable, and the structural dilemma of grid frequency control has become increasingly apparent.

[0003] In response to new demands and new problems in the process of building a new power system, we will continue to increase the construction of the power auxiliary service market, expand the breadth of service coverage, and explore the depth of service functions. Among them, frequency regulation services are related to the active balance between power generation and power consumption, the safe, stable and economic operation of power systems and power equipment, and high-end manufacturing and industrial transformation and upgrading. It is one of the most important power auxiliary services.

[0004] The new power system has dual-source system, dual high and low moment of inertia, dynamic source and dynamic load, and extremely uncertain characteristics of new energy generation, which greatly increase the difficulty of power system safety and stability. The problem of reverse distribution of new energy power generation resources and loads, and cross-regional high-voltage direct current transmission make the problem more complicated. In response to the above challenges, the country has clearly put forward the implementation path of "source-grid-load-storage integration" and "multi-energy complementarity", covering the application of energy storage on the source-grid-load side, the flexibility transformation of thermal power, and the grid-friendliness of new energy units. Energy storage technology has become one of the indispensable elements of the new power system with its strong controllability.

[0005] Frequency regulation service is related to the active power balance between power generation and power consumption, the safe, stable and economic operation of power systems and power equipment, high-end manufacturing and industrial transformation and upgrading, and is one of the most important power auxiliary services. The new power system has dual-source system, dual high, low moment of inertia, dynamic source and dynamic load, and extremely uncertain characteristics of new energy power generation, which makes the safety and stability of the power system more difficult. The problem of reverse distribution of new energy power generation resources and loads, and cross-regional high-voltage direct current transmission make the problem more complicated. The frequency regulation of the power grid is characterized by rapidity, randomness, and volatility; traditional thermal power units have long response time and low climbing rate. Even the more advanced CCS+DEH unit frequency / active power control system cannot overcome the response dead zone, hysteresis, nonlinearity, and low repetition accuracy of its electrical regulation mechanism. There are adjustment delays, deviations, and reverse regulation phenomena. Frequent changes in operating power also increase the fatigue and wear of unit equipment. Summary of the invention

[0006] The main purpose of the present invention is to provide a generator set joint frequency regulation method and related equipment, which can effectively solve the regulation delay, deviation, reverse regulation phenomenon in the background technology, and the problem that frequent changes in operating power also increase the fatigue and wear of the unit equipment.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is:

[0008] In a first aspect, the present application provides a method for joint frequency regulation of a generator set, the method comprising:

[0009] Acquire control information for the target generator set and actual power generation data of the target generator set, wherein the control information at least includes preset power data;

[0010] Calculate the power data of the hybrid energy storage system corresponding to the target generator set based on the preset power data and the actual power generation data;

[0011] Acquire state data of a power grid corresponding to the target generator set, and determine a working mode of the hybrid energy storage system based on the state data and preset rules, wherein the hybrid energy storage system includes a flywheel energy storage subsystem and a battery energy storage subsystem;

[0012] The working strategy of the hybrid energy storage system is generated according to the working mode and the power data, and the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system is controlled based on the working strategy to complete frequency modulation.

[0013] Optionally, the step of acquiring status data of the power grid corresponding to the target generator set, and determining the working mode of the hybrid energy storage system based on the status data and a preset rule includes:

[0014] When the state data is voltage and current data of the power grid, calculating frequency change data of the power grid based on the voltage and current data;

[0015] If the frequency change data is less than the preset frequency of the preset rule, determining that the working mode of the hybrid energy storage system is the first mode for primary frequency regulation of the power grid in the working mode;

[0016] If the frequency change data is greater than the preset frequency of the preset rule, determining that the working mode of the hybrid energy storage system is the second mode for secondary frequency regulation of the power grid in the working mode;

[0017] If the frequency change data is equal to zero, it is determined that the working mode of the hybrid energy storage system is a third mode among the working modes that is not grid frequency modulation.

[0018] Optionally, the step of generating a working strategy of the hybrid energy storage system according to the working mode and the power data includes:

[0019] When the working mode is the first mode, a first sub-strategy for adjusting the battery subsystem to a standby state is generated, and a second sub-strategy for the flywheel energy storage subsystem of the hybrid energy storage system is generated according to the power data, and a working strategy of the hybrid energy storage system is constructed based on the first sub-strategy and the second sub-strategy;

[0020] When the working mode is the second mode, a third sub-strategy is generated for adjusting the flywheel energy storage subsystem to a standby state, and a fourth sub-strategy for the battery subsystem in the hybrid energy storage system is generated according to the power data, and a working strategy of the hybrid energy storage system is constructed based on the third sub-strategy and the fourth sub-strategy;

[0021] When the working mode is the third mode, a fifth sub-strategy is generated for adjusting the flywheel energy storage subsystem to a standby state, and a sixth sub-strategy is generated for adjusting the battery subsystem to a standby state, and a working strategy of the hybrid energy storage system is constructed based on the fifth sub-strategy and the sixth sub-strategy.

[0022] In a second aspect, the present application provides a generator set joint frequency regulation system, the system comprising:

[0023] Target generator set, hybrid energy storage system, collection unit and control unit;

[0024] The output end of the target generator set and the hybrid energy storage system are connected in parallel to the power grid corresponding to the target generator set, the hybrid energy storage system includes a flywheel energy storage subsystem and a battery subsystem, the flywheel energy storage subsystem and the battery subsystem are connected in parallel, and the control unit is respectively connected to the target generator set, the hybrid energy storage system, and the acquisition unit signal;

[0025] The control unit is used to obtain control information for the target generator set and actual power generation data of the target generator set, the control information at least including preset power data; based on the preset power data and the actual power generation data, the power data of the hybrid energy storage system corresponding to the target generator set is calculated; the control unit is also used to obtain the status data of the power grid corresponding to the target generator set through the acquisition unit, and judge the working mode of the hybrid energy storage system based on the status data and preset rules, the hybrid energy storage system including a flywheel energy storage subsystem and a battery energy storage subsystem; generate a working strategy of the hybrid energy storage system according to the working mode and the power data, and control the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system to complete frequency modulation based on the working strategy.

[0026] Optionally, the flywheel energy storage subsystem includes at least one flywheel energy storage unit, and when the number of the flywheel energy storage units is greater than or equal to 2, the flywheel energy storage units in the flywheel energy storage subsystem are connected in parallel with each other; the battery energy storage subsystem includes at least one battery energy storage unit, and when the number of the battery energy storage units is greater than or equal to 2, the battery energy storage units in the battery energy storage subsystem are connected in parallel with each other.

[0027] Optionally, the flywheel energy storage unit in the flywheel energy storage subsystem is connected in series with an AC-DC bidirectional converter.

[0028] Specifically, an electronic device includes:

[0029] one or more processors;

[0030] The storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the above method.

[0031] Specifically, a computer-readable storage medium stores a program, and the program implements the above method when executed by a processor.

[0032] Beneficial effects of the present invention:

[0033] A hybrid energy storage system can be formed by connecting a flywheel energy storage subsystem and a battery energy storage subsystem in parallel. The flywheel unit in the flywheel energy storage subsystem has the advantages of high efficiency, fast response speed, and short charging time. When peak load regulation and frequency regulation are required, the energy stored in the flywheel energy storage subsystem and the battery energy storage subsystem can be released, which can accelerate the power generation load of the power plant to reach the specified value, so that the power generation power of the thermal power unit and the grid dispatching instructions match each other; the flywheel unit in the flywheel energy storage subsystem responds to the grid with high frequency, protects the battery energy storage subsystem, and makes the battery energy storage subsystem respond to the grid with low frequency, thereby extending its working life and improving the economy of the system; the acquisition unit is used to collect status data such as current and voltage of the grid, and the control unit controls the operation of the battery and flywheel unit according to the collected data, which can avoid the negative impact of the inherent current and voltage fluctuations of the grid on the battery energy storage subsystem. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Figure 1 A schematic flow chart of a method for joint frequency regulation of a generator set provided by the present invention;

[0036] Figure 2A schematic diagram of the structure of a generator set combined frequency modulation device provided by the present invention;

[0037] Figure 3 The present invention provides a schematic structural diagram of an electronic device. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] As an embodiment of the present invention, Figure 1 As shown, a generator set joint frequency regulation method according to the present invention comprises:

[0040] S101, obtaining control information for the target generator set and actual power generation data of the target generator set, wherein the control information at least includes preset power data;

[0041] S102, calculating the power data of the hybrid energy storage system corresponding to the target generator set based on the preset power data and the actual power generation data;

[0042] S103, acquiring state data of a power grid corresponding to the target generator set, and determining a working mode of the hybrid energy storage system based on the state data and a preset rule, wherein the hybrid energy storage system includes a flywheel energy storage subsystem and a battery energy storage subsystem;

[0043] S104, generating a working strategy for the hybrid energy storage system according to the working mode and the power data, and controlling the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system to complete frequency modulation based on the working strategy.

[0044] A hybrid energy storage system can be formed by connecting a flywheel energy storage subsystem and a battery energy storage subsystem in parallel. The flywheel unit in the flywheel energy storage subsystem has the advantages of high efficiency, fast response speed, and short charging time. When peak load regulation and frequency regulation are required, the energy stored in the flywheel energy storage subsystem and the battery energy storage subsystem can be released, which can accelerate the power generation load of the power plant to reach the specified value, so that the power generation power of the thermal power unit and the grid dispatching instructions match each other; the flywheel unit in the flywheel energy storage subsystem responds to the grid with high frequency, protects the battery energy storage subsystem, and makes the battery energy storage subsystem respond to the grid with low frequency, thereby extending its working life and improving the economy of the system; the acquisition unit is used to collect status data such as current and voltage of the grid, and the control unit controls the operation of the battery and flywheel unit according to the collected data, which can avoid the negative impact of the inherent current and voltage fluctuations of the grid on the battery energy storage subsystem.

[0045] In a possible implementation manner, the step of acquiring status data of the power grid corresponding to the target generator set, and determining the working mode of the hybrid energy storage system based on the status data and a preset rule includes:

[0046] When the state data is voltage and current data of the power grid, calculating frequency change data of the power grid based on the voltage and current data;

[0047] If the frequency change data is less than the preset frequency of the preset rule, determining that the working mode of the hybrid energy storage system is the first mode for primary frequency regulation of the power grid in the working mode;

[0048] If the frequency change data is greater than the preset frequency of the preset rule, determining that the working mode of the hybrid energy storage system is the second mode for secondary frequency regulation of the power grid in the working mode;

[0049] If the frequency change data is equal to zero, it is determined that the working mode of the hybrid energy storage system is a third mode among the working modes that is not grid frequency modulation.

[0050] Exemplarily, the preset frequency is 0.03 Hz. When the frequency change data is less than 0.03 Hz, the operating mode of the hybrid energy storage system is determined to be the first mode in the operating mode for primary frequency modulation of the power grid, that is, the flywheel energy storage subsystem is used to respond to the power grid at high frequency; when the frequency change data is greater than 0.03 Hz, the operating mode of the hybrid energy storage system is determined to be the second mode in the operating mode for primary frequency modulation of the power grid, that is, the battery subsystem is used to respond to the power grid at low frequency; when the frequency change data is equal to zero, neither the battery subsystem nor the flywheel energy storage subsystem responds to the power grid.

[0051] In a possible implementation manner, the step of generating a working strategy of the hybrid energy storage system according to the working mode and the power data includes:

[0052] When the working mode is the first mode, a first sub-strategy for adjusting the battery subsystem to a standby state is generated, and a second sub-strategy for the flywheel energy storage subsystem of the hybrid energy storage system is generated according to the power data, and a working strategy of the hybrid energy storage system is constructed based on the first sub-strategy and the second sub-strategy;

[0053] When the working mode is the second mode, a third sub-strategy is generated for adjusting the flywheel energy storage subsystem to a standby state, and a fourth sub-strategy for the battery subsystem in the hybrid energy storage system is generated according to the power data, and a working strategy of the hybrid energy storage system is constructed based on the third sub-strategy and the fourth sub-strategy;

[0054] When the working mode is the third mode, a fifth sub-strategy is generated for adjusting the flywheel energy storage subsystem to a standby state, and a sixth sub-strategy is generated for adjusting the battery subsystem to a standby state, and a working strategy of the hybrid energy storage system is constructed based on the fifth sub-strategy and the sixth sub-strategy.

[0055] Exemplarily, if the frequency modulation mode of the power grid is primary frequency modulation, that is, the fluctuation characteristics of the power grid are small amplitude, short period, and the load changes are highly accidental; the flywheel units in the flywheel energy storage subsystem respond to the power grid with high frequency according to their respective energy storage conditions until the power grid is balanced; if the frequency modulation mode of the power grid is secondary frequency modulation, that is, the fluctuation characteristics of the power grid are large amplitude and long period; the battery subsystem enters charging and discharging operation; if the frequency modulation mode of the power grid is no need for frequency modulation, the battery is turned off, and each flywheel unit is in standby state, and no charging and discharging operations are performed.

[0056] Exemplarily, the step of generating a working strategy of the hybrid energy storage system according to the working mode and the power data further includes:

[0057] Acquire first energy storage data of each flywheel unit in the flywheel energy storage subsystem and second energy storage data of each battery energy storage unit in the battery subsystem;

[0058] A working strategy of the hybrid energy storage system is generated according to the working mode, the power data, the first energy storage data and the second energy storage data.

[0059] The working strategy is made to be a strategy for each flywheel unit and / or battery energy storage unit to achieve precise control.

[0060] In a possible implementation, the present application provides a generator set joint frequency regulation system, the system comprising:

[0061] Target generator set, hybrid energy storage system, collection unit and control unit;

[0062] The output end of the target generator set and the hybrid energy storage system are connected in parallel to the power grid corresponding to the target generator set, the hybrid energy storage system includes a flywheel energy storage subsystem and a battery subsystem, the flywheel energy storage subsystem and the battery subsystem are connected in parallel, and the control unit is respectively connected to the target generator set, the hybrid energy storage system, and the acquisition unit signal;

[0063] The control unit is used to obtain control information for the target generator set and actual power generation data of the target generator set, the control information at least including preset power data; based on the preset power data and the actual power generation data, the power data of the hybrid energy storage system corresponding to the target generator set is calculated; the control unit is also used to obtain the status data of the power grid corresponding to the target generator set through the acquisition unit, and judge the working mode of the hybrid energy storage system based on the status data and preset rules, the hybrid energy storage system including a flywheel energy storage subsystem and a battery energy storage subsystem; generate a working strategy of the hybrid energy storage system according to the working mode and the power data, and control the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system to complete frequency modulation based on the working strategy.

[0064] In one possible implementation, the flywheel energy storage subsystem includes at least one flywheel energy storage unit, and when the number of the flywheel energy storage units is greater than or equal to 2, the flywheel energy storage units in the flywheel energy storage subsystem are connected in parallel with each other, and the battery energy storage subsystem includes at least one battery energy storage unit, and when the number of the battery energy storage units is greater than or equal to 2, the battery energy storage units in the battery energy storage subsystem are connected in parallel with each other.

[0065] Exemplarily, multiple flywheel energy storage units are connected in parallel. When one flywheel energy storage unit fails, it does not affect the normal operation of the flywheel energy storage subsystem, thereby improving the reliability of the flywheel energy storage subsystem. Similarly, multiple battery energy storage units are connected in parallel. When one battery energy storage unit fails, it does not affect the normal operation of the battery energy storage subsystem, thereby improving the reliability of the battery energy storage unit subsystem.

[0066] Exemplarily, the flywheel energy storage unit in the flywheel energy storage subsystem is connected in series with an AC-DC bidirectional converter.

[0067] like Figure 2 As shown, a generator set combined frequency regulation device according to the present invention comprises:

[0068] The data acquisition module 201 is used to obtain control information for the target generator set and actual power generation data of the target generator set, wherein the control information at least includes preset power data;

[0069] A first calculation module 202, configured to calculate the power data of the hybrid energy storage system corresponding to the target generator set based on the preset power data and the actual power generation data;

[0070] A judgment module 203 is used to obtain the state data of the power grid corresponding to the target generator set, and judge the working mode of the hybrid energy storage system based on the state data and preset rules, wherein the hybrid energy storage system includes a flywheel energy storage subsystem and a battery energy storage subsystem;

[0071] The strategy generation module 204 is used to generate a working strategy of the hybrid energy storage system according to the working mode and the power data, and control the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system to complete frequency modulation based on the working strategy.

[0072] like Figure 3 As shown, an electronic device 50 of the present invention is in the form of a general computing device. The components of the electronic device 50 may include but are not limited to: one or more processors or processing units 501, a system memory 502, and a bus 503 connecting different system components (including the system memory 502 and the processing unit 501).

[0073] Bus 503 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus and Peripheral Component Interconnect (PCI) bus.

[0074] The electronic device 50 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 50, including volatile and non-volatile media, removable and non-removable media.

[0075] System memory 502 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 504 and / or cache memory 505. Electronic device 50 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 506 may be used to read and write non-removable, non-volatile magnetic media ( Figure 3 not shown, usually called a "hard drive"). Although Figure 3Not shown in the figure, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 503 via one or more data medium interfaces. The memory 502 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the embodiments of the present invention.

[0076] A program / utility 508 having a set (at least one) of program modules 507 may be stored, for example, in the memory 502, such program modules 507 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 507 generally perform the functions and / or methods of the embodiments described herein.

[0077] The electronic device 50 may also communicate with one or more external devices 509 (e.g., keyboards, pointing devices, displays 510, etc.), may communicate with one or more devices that enable a user to interact with the electronic device 50, and / or communicate with any device that enables the electronic device 50 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed through an input / output (I / O) interface 511. Furthermore, the electronic device 50 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 512. As shown, the network adapter 512 communicates with other modules of the electronic device 50 through the bus 503. It should be understood that although Figure 3 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 50, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0078] The processing unit 501 executes various functional applications and data processing by running the programs stored in the system memory 502, such as implementing the generator set joint frequency regulation method provided in the embodiment of the present invention.

[0079] In the embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways; for example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed; another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms;

[0080] The units described as separate components may or may not be physically separated, and the components displayed 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;

[0081] 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;

[0082] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or partly contributed to the prior art 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 enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks.

[0083] It should be noted that the system is a system corresponding to the above method, and all implementations in the above method embodiment are applicable to this embodiment and can achieve the same technical effect; in addition, it should be pointed out that in the device and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined; these decompositions and / or recombinations should be regarded as equivalent schemes of the present invention; and the steps of executing the above series of processing can naturally be executed in chronological order according to the order of description, but it is not necessary to execute them in chronological order, and some steps can be executed in parallel or independently of each other; for ordinary technicians in the field, it can be understood that all or any steps or components of the method and device of the present invention can be implemented in hardware, firmware, software or a combination thereof in any computing device (including processors, storage media, etc.) or a network of computing devices, which can be achieved by ordinary technicians in the field of technology using their basic programming skills after reading the description of the present invention;

[0084] Therefore, the purpose of the present invention can also be achieved by running a program or a group of programs on any computing device; the computing device can be a well-known general-purpose device; therefore, the purpose of the present invention can also be achieved simply by providing a program product containing program codes that implement the method or device; that is, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention; obviously, the storage medium can be any well-known storage medium or any storage medium developed in the future; it should also be pointed out that in the device and method of the present invention, it is obvious that each component or step can be decomposed and / or recombined; these decompositions and / or recombinations should be regarded as equivalent schemes of the present invention; and, the steps of performing the above series of processing can naturally be executed in chronological order according to the order of description, but it is not necessary to be executed in chronological order; some steps can be executed in parallel or independently of each other.

[0085] The above is 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 principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for joint frequency regulation of generator sets, characterized in that: The method comprises: Acquire control information for the target generator set and actual power generation data of the target generator set, wherein the control information at least includes preset power data; Calculate the power data of the hybrid energy storage system corresponding to the target generator set based on the preset power data and the actual power generation data; Acquire state data of a power grid corresponding to the target generator set, and determine a working mode of the hybrid energy storage system based on the state data and preset rules, wherein the hybrid energy storage system includes a flywheel energy storage subsystem and a battery energy storage subsystem; The working strategy of the hybrid energy storage system is generated according to the working mode and the power data, and the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system is controlled based on the working strategy to complete frequency modulation.

2. A generator set joint frequency modulation method according to claim 1, characterized in that: The step of acquiring the state data of the power grid corresponding to the target generator set, and judging the working mode of the hybrid energy storage system based on the state data and preset rules, comprises: When the state data is voltage and current data of the power grid, calculating frequency change data of the power grid based on the voltage and current data; If the frequency change data is less than the preset frequency of the preset rule, determining that the working mode of the hybrid energy storage system is the first mode for primary frequency regulation of the power grid in the working mode; If the frequency change data is greater than the preset frequency of the preset rule, determining that the working mode of the hybrid energy storage system is the second mode for secondary frequency regulation of the power grid in the working mode; If the frequency change data is equal to zero, it is determined that the working mode of the hybrid energy storage system is a third mode among the working modes that is not grid frequency modulation.

3. A generator set joint frequency modulation method according to claim 1, characterized in that: The step of generating a working strategy of the hybrid energy storage system according to the working mode and the power data comprises: When the working mode is the first mode, a first sub-strategy for adjusting the battery subsystem to a standby state is generated, and a second sub-strategy for the flywheel energy storage subsystem of the hybrid energy storage system is generated according to the power data, and a working strategy of the hybrid energy storage system is constructed based on the first sub-strategy and the second sub-strategy; When the working mode is the second mode, a third sub-strategy is generated for adjusting the flywheel energy storage subsystem to a standby state, and a fourth sub-strategy for the battery subsystem in the hybrid energy storage system is generated according to the power data, and a working strategy of the hybrid energy storage system is constructed based on the third sub-strategy and the fourth sub-strategy; When the working mode is the third mode, a fifth sub-strategy is generated for adjusting the flywheel energy storage subsystem to a standby state, and a sixth sub-strategy is generated for adjusting the battery subsystem to a standby state, and a working strategy of the hybrid energy storage system is constructed based on the fifth sub-strategy and the sixth sub-strategy.

4. A generator set joint frequency modulation system, characterized in that: The system comprises: Target generator set, hybrid energy storage system, collection unit and control unit; The output end of the target generator set and the hybrid energy storage system are connected in parallel to the power grid corresponding to the target generator set, the hybrid energy storage system includes a flywheel energy storage subsystem and a battery subsystem, the flywheel energy storage subsystem and the battery subsystem are connected in parallel, and the control unit is respectively connected to the target generator set, the hybrid energy storage system, and the acquisition unit signal; The control unit is used to obtain control information for the target generator set and actual power generation data of the target generator set, the control information at least including preset power data; based on the preset power data and the actual power generation data, the power data of the hybrid energy storage system corresponding to the target generator set is calculated; the control unit is also used to obtain the status data of the power grid corresponding to the target generator set through the acquisition unit, and judge the working mode of the hybrid energy storage system based on the status data and preset rules, the hybrid energy storage system including a flywheel energy storage subsystem and a battery energy storage subsystem; generate a working strategy of the hybrid energy storage system according to the working mode and the power data, and control the flywheel energy storage subsystem and / or the battery energy storage subsystem in the hybrid energy storage system to complete frequency modulation based on the working strategy.

5. A generator set joint frequency modulation system according to claim 4, characterized in that: The flywheel energy storage subsystem includes at least one flywheel energy storage unit. When the number of the flywheel energy storage units is greater than or equal to 2, the flywheel energy storage units in the flywheel energy storage subsystem are connected in parallel with each other. The battery energy storage subsystem includes at least one battery energy storage unit. When the number of the battery energy storage units is greater than or equal to 2, the battery energy storage units in the battery energy storage subsystem are connected in parallel with each other.

6. A generator set joint frequency modulation system according to claim 4, characterized in that: The flywheel energy storage unit in the flywheel energy storage subsystem is connected in series with an AC-DC bidirectional converter.

7. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the method as claimed in any one of claims 1 to 3.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program, which, when executed by a processor, implements the method according to any one of claims 1 to 3.

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