Method and device for controlling source load automatic following system of hydrogen fuel cell power generation system

Abstract

The invention provides a hydrogen fuel cell power generation system source load automatic following system control method and device. The method comprises the following steps: obtaining hydrogen fuel cell power and lithium battery current; judging whether the lithium battery is in a shallow charging and shallow discharging state or not according to the current of the lithium battery; and when the lithium battery is not in the shallow charge and shallow discharge state, executing a source-load follow-up action, and adjusting the power of the hydrogen fuel cell, so that the lithium battery is in the shallow charge and shallow discharge state. The working condition of the hydrogen fuel cell is adjusted by monitoring the current of the lithium battery, and the lithium battery is adjusted to be in a shallow charging and shallow discharging working state, so that the fuel cell and lithium battery combined operation system can efficiently work for a longer service life, and the long-term operation cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of fuel cell power generation technology, and in particular to a method, device, computing equipment and storage medium for controlling a source-load automatic following system of a hydrogen fuel cell power generation system. Background Art

[0002] Hydrogen fuel cells have the advantages of being environmentally friendly, pollution-free, zero-emission, and highly efficient in generating electricity, making them one of the important measures to achieve the carbon reduction target. At the same time, they also provide a storage solution for the wind and solar power abandonment that has emerged. Wind and solar power abandonment can be electrolyzed to generate hydrogen for storage. When the grid allows access, the stored hydrogen is converted into electricity through the hydrogen fuel power generation system and transmitted to the grid, thus avoiding the waste of a large amount of wind and solar power resources. The hydrogen fuel power generation system has the inherent characteristic of poor resistance to large load disturbances. In order to cope with the increase and decrease indicators and real-time indicator requirements of the power grid side for power dispatch, it is necessary to improve the load impact resistance and response timeliness of the fuel cell power generation system to load impact. The fuel cell and lithium battery joint operation system can operate stably and has good load impact resistance. However, there is a lack of a system control method for automatic source-load following, which can make the fuel cell and lithium battery joint operation system work efficiently for a longer life and reduce long-term operating costs. Summary of the invention

[0003] In view of the above problems in the prior art, the present application provides a method, device, computing equipment and storage medium for controlling a source-load automatic following system of a hydrogen fuel cell power generation system, so as to enable the fuel cell and lithium battery combined operation system to work efficiently for a longer life and reduce long-term operation costs.

[0004] To achieve the above-mentioned purpose, the first aspect of the present application provides a method for controlling a source-load automatic following system of a hydrogen fuel cell power generation system, comprising:

[0005] Obtain hydrogen fuel cell power and lithium battery current;

[0006] Judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current;

[0007] When the lithium battery is not in a shallow charge and discharge state, a source-charge following action is performed to adjust the power of the hydrogen fuel cell so that the lithium battery is in a shallow charge and discharge state.

[0008] From the above, the present application determines whether to perform source-load following action by monitoring the status of the lithium battery, adjusts the working condition of the hydrogen fuel cell, and adjusts the lithium battery to a shallow charge and shallow discharge working state. This allows the fuel cell and lithium battery combined operation system to work efficiently for a longer life and reduce long-term operating costs.

[0009] As a possible implementation of the first aspect, judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current includes:

[0010] Comparing the lithium battery current with a current adjustment threshold;

[0011] When the lithium battery current is greater than or equal to the current adjustment threshold, or when the lithium battery current is less than or equal to the negative value of the current adjustment threshold, it indicates that the lithium battery is not in a shallow charge and discharge state.

[0012] As a possible implementation of the first aspect, when the lithium battery is not in a shallow charge and shallow discharge state, performing a source-charge following action to adjust the power of the hydrogen fuel cell so that the lithium battery is in a shallow charge and shallow discharge state includes:

[0013] When the lithium battery current is greater than or equal to the current adjustment threshold, reducing the power of the hydrogen fuel cell to put the lithium battery in a shallow charging state;

[0014] When the lithium battery current is less than or equal to the negative value of the current adjustment threshold, the power of the hydrogen fuel cell is increased to put the lithium battery in a shallow discharge state.

[0015] As a possible implementation of the first aspect, when the lithium battery is not in a shallow charge and discharge state, the method further includes:

[0016] Obtain the hydrogen fuel cell current value and the lithium battery state of charge SOC value;

[0017] Determine whether the state of charge (SOC) value of the lithium battery is within a SOC threshold range, and set a corresponding lithium battery operating current target value based on the determination result;

[0018] Determining a current demand deviation according to the lithium battery current and the lithium battery operating current target value;

[0019] Based on the current demand deviation, a source-load following action is performed to adjust the current value of the hydrogen fuel cell so that the current of the lithium battery changes;

[0020] It is determined whether the current demand deviation is within the dead zone value range. If so, the adjustment is terminated; if not, the adjustment is continued.

[0021] From the above, the lithium battery subsystem cannot be charged or discharged indefinitely, because too high SOC value or too low SOC value state will cause the lithium battery to decay faster. Therefore, this application also determines whether the SOC value of the lithium battery state of charge is within the SOC threshold range. If not, the source-load following action is performed to adjust the hydrogen fuel cell working conditions and adjust the lithium battery state of charge SOC to the threshold range, so as to achieve efficient and long-life stable operation of the lithium battery. In turn, the fuel cell and lithium battery joint operation system can work efficiently for a longer life and reduce long-term operating costs.

[0022] As a possible implementation of the first aspect, the determining whether the state of charge (SOC) value of the lithium battery is within a SOC threshold range, and setting a corresponding lithium battery operating current target value based on the determination result, includes:

[0023] When the state of charge (SOC) value of the lithium battery is greater than the maximum value of the SOC threshold range, setting a first lithium battery operating current target value;

[0024] When the state of charge (SOC) value of the lithium battery is within the SOC threshold range, setting a second lithium battery operating current target value;

[0025] When the state of charge (SOC) value of the lithium battery is less than the minimum value of the SOC threshold range, a third lithium battery operating current target value is set.

[0026] As a possible implementation manner of the first aspect, determining the current demand deviation according to the lithium battery current and the lithium battery operating current target value includes:

[0027] The difference between the lithium battery operating current target value and the lithium battery current is calculated as the current demand deviation.

[0028] As a possible implementation of the first aspect, based on the current demand deviation, performing a source-load following action to adjust the current value of the hydrogen fuel cell includes:

[0029] The hydrogen fuel cell current value is increased or decreased by half of the current demand deviation.

[0030] To achieve the above-mentioned purpose, the second aspect of the present application provides a source-load automatic following system control device for a hydrogen fuel cell power generation system, comprising:

[0031] An information acquisition module, used to obtain the hydrogen fuel cell power and lithium battery current;

[0032] A judging module, used for judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current;

[0033] The source-charge following control power adjustment module is used to perform the source-charge following action when the lithium battery is not in a shallow charge and discharge state, and adjust the power of the hydrogen fuel cell to put the lithium battery in a shallow charge and discharge state.

[0034] A third aspect of the present application provides a computing device, including:

[0035] processor, and

[0036] A memory having program instructions stored thereon, wherein when the program instructions are executed by the processor, the processor executes any of the methods described in the first aspect above.

[0037] A fourth aspect of the present application provides a computer-readable storage medium having program instructions stored thereon, wherein when the program instructions are executed by a computer, the computer implements any of the methods described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a first flow chart of an embodiment of a method for controlling a source-load automatic following system of a hydrogen fuel cell power generation system provided in an embodiment of the present application;

[0039] Figure 2 This is a second flow chart of an embodiment of a method for controlling a source-load automatic following system of a hydrogen fuel cell power generation system provided in an embodiment of the present application;

[0040] Figure 3 A structural schematic diagram of a source-load automatic following system control device for a hydrogen fuel cell power generation system provided in an embodiment of the present application;

[0041] Figure 4 It is a structural schematic diagram of a computing device provided in an embodiment of the present application.

[0042] It should be understood that the size and shape of each block diagram in the above structural diagram are for reference only and should not constitute an exclusive interpretation of the embodiment of the present invention. The relative position and inclusion relationship between the blocks presented in the structural diagram are only schematic representations of the structural association between the blocks, and do not limit the physical connection method of the embodiment of the present invention. DETAILED DESCRIPTION

[0043] The technical solution provided by the present application is further described below with reference to the accompanying drawings and examples. It should be understood that the system structure and business scenarios provided in the examples of the present application are mainly to illustrate the possible implementation methods of the technical solution of the present application and should not be interpreted as the only limitation on the technical solution of the present application. It is known to those of ordinary skill in the art that with the evolution of the system structure and the emergence of new business scenarios, the technical solution provided by the present application is also applicable to similar technical problems.

[0044] It should be understood that the hydrogen fuel cell power generation system source-load automatic following system control scheme provided in the embodiments of the present application includes a hydrogen fuel cell power generation system source-load automatic following system control method and device. Since the principles of solving the problems in these technical solutions are the same or similar, in the introduction of the following specific embodiments, some repetitions may not be repeated, but it should be regarded that these specific embodiments have been referenced to each other and can be combined with each other.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. If there is any inconsistency, the meaning described in this specification or the meaning derived from the content recorded in this specification shall prevail. In addition, the terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application. In order to accurately describe the technical contents in this application, and in order to accurately understand the present invention, the following explanation or definition is given to the terms used in this specification before describing the specific embodiments.

[0046] [An embodiment of a method for controlling a source-load automatic following system of a hydrogen fuel cell power generation system]

[0047] For a fuel cell and lithium battery combined operation system, the lithium battery can quickly release or absorb power fluctuations caused by load fluctuations, providing a buffer time for the hydrogen fuel cell power generation system to change the system operating conditions to add or reduce loads. Based on this, the first embodiment of the present application provides a hydrogen fuel cell power generation system source-load automatic following system control method, which can determine whether to perform source-load following action by monitoring the state of the lithium battery, adjust the hydrogen fuel cell working condition, and adjust the lithium battery to a shallow charge and shallow discharge working state, so that the fuel cell and lithium battery combined operation system can work efficiently for a longer life and reduce long-term operating costs.

[0048] Specifically, Figure 1 As shown, the method includes:

[0049] S110: obtaining hydrogen fuel cell power and lithium battery current;

[0050] S120: judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current;

[0051] S130: When the lithium battery is not in a shallow charge and discharge state, a source-charge following action is performed to adjust the power of the hydrogen fuel cell so that the lithium battery is in a shallow charge and discharge state.

[0052] For step S110, the hydrogen fuel cell power P1 is obtained, in kw, and the lithium battery current A3 is obtained, in A.

[0053] Then for step S120, it is necessary to determine whether the lithium battery is in a shallow charge and discharge state. In some embodiments, determining whether the lithium battery is in a shallow charge and discharge state based on the current of the lithium battery includes:

[0054] Comparing the current of the lithium battery with a current adjustment threshold;

[0055] When the current of the lithium battery is greater than or equal to the current adjustment threshold, or when the current of the lithium battery is less than or equal to the negative value of the current adjustment threshold, it indicates that the lithium battery is not in a shallow charge and discharge state.

[0056] Specifically, the current A3 of the lithium battery can be compared with the current adjustment threshold DeltaA (a positive value, unit: A). When -DeltaA < A3 < DeltaA, it indicates that the lithium battery is in a shallow charge and discharge state. When A3 >= DeltaA or A3 <= -DeltaA, it indicates that the lithium battery is not in a shallow charge and discharge state. Among them, for the current aspect, A3 > 0 is regarded as the charging state of the lithium battery subsystem, and A3 < 0 is regarded as the discharging state of the lithium battery subsystem.

[0057] For step S130, in some embodiments, when the lithium battery is not in a shallow charge and discharge state, performing a source-load follow-up action to adjust the power of the hydrogen fuel cell to make the lithium battery in a shallow charge and discharge state includes:

[0058] When the current of the lithium battery is greater than or equal to the current adjustment threshold, reducing the power of the hydrogen fuel cell to make the lithium battery in a charging state;

[0059] When the current of the lithium battery is less than or equal to the negative value of the current adjustment threshold, increasing the power of the hydrogen fuel cell to make the lithium battery in a discharging state.

[0060] Specifically, when the load carried by the hydrogen fuel cell power generation system is unchanged, it is relatively stable in a short period of time and fluctuates in a long period of time, and will change significantly when the load changes. When the load changes, it is necessary to adjust the hydrogen fuel cell and the lithium battery. The adjustment basis is: P1 = P2 + P3, where P1 is the current power of the hydrogen fuel cell, P2 is the current power of the load, and P3 is the current power of the lithium battery. Therefore, when the load P2 changes, the current power P1 of the hydrogen fuel cell and the current power P3 of the lithium battery also need to change to maintain P1 = P2 + P3. Because for the combined operation system of the fuel cell and the lithium battery, the lithium battery can quickly release or absorb the power fluctuation caused by the load fluctuation, providing a buffer time for the hydrogen fuel cell power generation system to change the system operating conditions for loading and unloading actions. Therefore, the current power P3 of the lithium battery can be adjusted by adjusting the current power P1 of the hydrogen fuel cell, and then the current A3 of the lithium battery can be adjusted.

[0061] The specific adjustment actions are as follows:

[0062] When A3>=DeltaA, it means that the lithium battery is in a state of high current charging, and the hydrogen fuel cell power generation system needs to perform source-load following adjustment, reduce P1 power, make A3<DeltaA, and the lithium battery enters a shallow charge state. When A3<=-DeltaA, it means that the lithium battery is in a state of high current discharging, and the hydrogen fuel cell power generation system needs to perform source-load following adjustment, increase P1 power, make A3>-DeltaA, so that the lithium battery subsystem works in a shallow discharge state.

[0063] During the process of adjusting P1 to change A3, it is determined at any time whether A3≥DeltaA or A3≤-DeltaA is still true. If it is determined that A3≥DeltaA or A3≤-DeltaA is true, it is necessary to return to S110 to continue the adjustment. If it is determined that A3≥DeltaA or A3≤-DeltaA is not true, the adjustment is exited.

[0064] At this time, when the lithium battery is adjusted to be in a shallow charge and discharge state, the current power P1 of the hydrogen fuel cell and the current power P3 of the lithium battery are constant, and the hydrogen fuel cell power generation system enters a constant power operation state.

[0065] However, the lithium battery subsystem cannot be charged or discharged indefinitely, because too high SOC value or too low SOC value will cause the lithium battery to decay faster. Figure 2 As shown, the hydrogen fuel cell power generation system source-load automatic following system control method proposed in the present application, when the lithium battery is not in a shallow charge and discharge state, further includes:

[0066] S210: Obtaining a current value of the hydrogen fuel cell and a state of charge SOC value of the lithium battery;

[0067] S220: Determine whether the state of charge (SOC) value of the lithium battery is within a SOC threshold range, and set a corresponding lithium battery operating current target value based on the determination result;

[0068] S230: Determine a current demand deviation according to the lithium battery current and the lithium battery operating current target value;

[0069] S240: Based on the current demand deviation, executing a source-load following action to adjust the current value of the hydrogen fuel cell so that the current of the lithium battery changes;

[0070] S250: Determine whether the current demand deviation is within the dead zone value range, if so, end the adjustment, if not, continue the adjustment.

[0071] For step S210, when the lithium battery is not in a shallow charge and discharge state, that is, A3≥DeltaA or A3≤-DeltaA, the hydrogen fuel cell current value A1 is obtained, in A. The state of charge SOC value of the lithium battery is obtained.

[0072] For step S220, it is determined whether the SOC value of the lithium battery state of charge is within the SOC threshold range [D1, D2] (a positive number). In some embodiments, the determination of whether the SOC value of the lithium battery state of charge is within the SOC threshold range and setting the corresponding lithium battery operating current target value based on the determination result include:

[0073] When the state of charge (SOC) value of the lithium battery is greater than the maximum value of the SOC threshold range, setting a first lithium battery operating current target value;

[0074] When the state of charge (SOC) value of the lithium battery is within the SOC threshold range, setting a second lithium battery operating current target value;

[0075] When the state of charge (SOC) value of the lithium battery is less than the minimum value of the SOC threshold range, a third lithium battery operating current target value is set.

[0076] Specifically, the first lithium battery operating current target value is B1, the second lithium battery operating current target value is B2, and the third lithium battery operating current target value is B3, wherein B1>B2>B3, and B1>0, B2=0, B3<0 (the specific values ​​of B1 and B3 are determined according to actual conditions). When SOC≤D1, it means that the lithium battery is a little low on power, and the lithium battery needs to be recharged so that the current of the lithium battery is recharged to the target value B1 (positive value); when SOC≥D1 and SOC≤D2, it means that the SOC value of the lithium battery is within the SOC threshold range, the lithium battery is normal, and the target value B2 (actually 0) is set, and no recharging or discharge is required; when SOC≥D2, the SOC is too high, which means that the lithium battery power is too high, and the lithium battery needs to be discharged so that the current of the lithium battery is discharged to the target value B3 (negative value).

[0077] Regarding step S230, in some embodiments, determining the current demand deviation according to the lithium battery current and the lithium battery operating current target value includes:

[0078] The difference between the lithium battery operating current target value and the lithium battery current is calculated as the current demand deviation.

[0079] Specifically, the current demand deviation DeltaB=B1-A3 (or DeltaB=B2-A3, or DeltaB=B3-A3) is calculated.

[0080] Regarding step S240, in some embodiments, based on the current demand deviation, performing a source-load following action to adjust the current value of the hydrogen fuel cell includes:

[0081] The hydrogen fuel cell current value is increased or decreased by half of the current demand deviation.

[0082] Specifically, when the lithium battery needs to be discharged so that the SOC is within the reasonable range [D1, D2], the hydrogen fuel cell current value needs to be reduced accordingly, thereby reducing the lithium battery current A3. When the lithium battery needs to be charged so that the SOC is within the reasonable range [D1, D2], the hydrogen fuel cell current value needs to be increased accordingly, thereby increasing the lithium battery current A3.

[0083] In order to avoid the oscillation caused by excessive adjustment of the hydrogen fuel cell current value or the misadjustment caused by the instability of the lithium battery current, it is necessary to steadily adjust the lithium battery current A3 to B1, that is, each time the hydrogen fuel cell current value is increased by DeltaB / 2, thereby increasing the lithium battery current A3, and then reducing the current demand deviation DeltaB between the lithium battery current and the set current. Each adjustment executes step S250 to determine whether the current demand deviation DeltaB is within the range of [-DeadZone, DeadZone]. If so, the adjustment is completed; if it is outside [-DeadZone, DeadZone], it is necessary to return to step S210, obtain the adjusted hydrogen fuel cell current value and the lithium battery state of charge SOC value, re-determine and calculate the current demand deviation between the adjusted current lithium battery current A3 and the target value, and continue to adjust the hydrogen fuel cell current value according to the new current demand deviation until the current demand deviation DeltaB is within the range of [-DeadZone, DeadZone]. Wherein, DeadZone: dead zone value.

[0084] Similarly, in the process of reducing the lithium battery current A3 to B3, steady adjustment is required, that is, each time the hydrogen fuel cell current value is reduced by DeltaB / 2 accordingly, thereby reducing the lithium battery current A3, and then increasing the current demand deviation DeltaB between the lithium battery current and the set current. Each adjustment executes step S250 to determine whether the current demand deviation DeltaB is within the range of [-DeadZone, DeadZone]. If so, the adjustment is completed; if it is outside [-DeadZone, DeadZone], it is necessary to return to step S210, obtain the adjusted hydrogen fuel cell current value and the lithium battery state of charge SOC value, re-determine and calculate the current demand deviation between the adjusted current lithium battery current A3 and the target value, and continue to adjust the hydrogen fuel cell current value according to the new current demand deviation until the current demand deviation DeltaB is within the range of [-DeadZone, DeadZone].

[0085] After the adjustment is completed, the current power P1 of the hydrogen fuel cell and the current power P3 of the lithium battery are constant, the hydrogen fuel cell power generation system enters a constant power operation state, and the SOC of the lithium battery is adjusted back to a reasonable range [D1, D2].

[0086] In summary, the beneficial effects of the present application are: first, for the fuel cell and lithium battery joint operation system, by monitoring the lithium battery charge and discharge power, activating the program adjustment algorithm, adjusting the hydrogen fuel cell working condition, and adjusting the lithium battery to a shallow charge and shallow discharge working state; second, by monitoring the lithium battery SOC state and the lithium battery charge and discharge power, when the SOC deviates from the optimal range [D1, D2] during the operation of the lithium battery, activating the program adjustment algorithm, adjusting the hydrogen fuel cell working condition, and adjusting the lithium battery SOC back to a reasonable range [D1, D2]. Adjusting the hydrogen fuel cell working condition and adjusting the lithium battery to a shallow charge and shallow discharge working state to achieve the best operating state can effectively extend the service life of the equipment and reduce long-term operating costs.

[0087] In addition, the present application can also realize remote viewing and archiving of the centralized control system, remotely view the operating status and power scheduling of the hydrogen fuel cell power generation system, and perform necessary manual intervention.

[0088] [Embodiment of the source-load automatic following system control device of the hydrogen fuel cell power generation system of the present application]

[0089] like Figure 3 As shown, the embodiment of the present application provides a hydrogen fuel cell power generation system source-load automatic following system control device, and the hydrogen fuel cell power generation system source-load automatic following system control device can be used to implement the hydrogen fuel cell power generation system source-load automatic following system control method in the above embodiment, such as Figure 3As shown, the hydrogen fuel cell power generation system source-load automatic following system control device comprises an information acquisition module 310 , a judgment module 320 , and a source-load following control power adjustment module 330 .

[0090] An information acquisition module, used to obtain the hydrogen fuel cell power and lithium battery current;

[0091] A judging module, used for judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current;

[0092] The source-charge following control power adjustment module is used to perform the source-charge following action when the lithium battery is not in a shallow charge and discharge state, and adjust the power of the hydrogen fuel cell to put the lithium battery in a shallow charge and discharge state.

[0093] For details, please refer to the detailed description of steps S110-S130 in the method embodiment, which will not be repeated here.

[0094] In some embodiments, the lithium battery subsystem cannot be charged or discharged indefinitely, because an excessively high SOC value or an excessively low SOC value state will cause the lithium battery to decay faster. Figure 3 As shown, this application also includes:

[0095] The information acquisition module is also used to obtain the current value of the hydrogen fuel cell and the state of charge SOC value of the lithium battery;

[0096] The judgment module is further used to judge whether the state of charge (SOC) value of the lithium battery is within the SOC threshold range, and set the corresponding lithium battery operating current target value based on the judgment result;

[0097] The source-load following control SOC correction module 340 is used to determine the current demand deviation according to the lithium battery current and the lithium battery operating current target value; based on the current demand deviation, perform source-load following action to adjust the hydrogen fuel cell current value; determine whether the current demand deviation is within the dead zone value range, if so, end the adjustment, if not, continue the adjustment.

[0098] For details, please refer to the detailed description of steps S210-S250 in the method embodiment, which will not be repeated here.

[0099] [Embodiment of the computing device of the present application]

[0100] Figure 4 900 is a schematic structural diagram of a computing device provided in an embodiment of the present application. The computing device can be used as a source-load automatic following system control device for a hydrogen fuel cell power generation system, and executes each optional embodiment of the source-load automatic following system control method for a hydrogen fuel cell power generation system. The computing device can be a terminal, or a chip or chip system inside a terminal. Figure 4 As shown, the computing device 900 includes: a processor 910 , a memory 920 , and a communication interface 930 .

[0101] It should be understood that Figure 4 The communication interface 930 in the computing device 900 shown may be used to communicate with other devices, and may specifically include one or more transceiver circuits or interface circuits.

[0102] The processor 910 may be connected to a memory 920. The memory 920 may be used to store the program code and data. Therefore, the memory 920 may be a storage unit inside the processor 910, or an external storage unit independent of the processor 910, or a component including a storage unit inside the processor 910 and an external storage unit independent of the processor 910.

[0103] Optionally, the computing device 900 may further include a bus. The memory 920 and the communication interface 930 may be connected to the processor 910 via the bus. The bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 A line without an arrow is used to represent the bus, but this does not mean that there is only one bus or one type of bus.

[0104] It should be understood that in the embodiment of the present application, the processor 910 may adopt a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. Alternatively, the processor 910 may adopt one or more integrated circuits to execute relevant programs to implement the technical solutions provided in the embodiment of the present application.

[0105] The memory 920 may include a read-only memory and a random access memory, and provides instructions and data to the processor 910. A portion of the processor 910 may also include a nonvolatile random access memory. For example, the processor 910 may also store information on the device type.

[0106] When the computing device 900 is running, the processor 910 executes the computer-executable instructions in the memory 920 to perform any operation step of the above method and any optional embodiment thereof.

[0107] It should be understood that the computing device 900 according to the embodiment of the present application can correspond to the corresponding subjects in the methods according to the embodiments of the present application, and the above-mentioned and other operations and / or functions of each module in the computing device 900 are respectively for implementing the corresponding processes of each method of the present embodiment. For the sake of brevity, they will not be repeated here.

[0108] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0109] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0110] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. 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 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 devices or units, which can be electrical, mechanical or other forms.

[0111] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0112] In addition, each functional unit in each embodiment of the present application 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.

[0113] 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 application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0114] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it is used to execute the above method, which includes at least one of the solutions described in the above embodiments.

[0115] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media. Computer-readable media can be computer-readable signal media or computer-readable storage media. Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above. More specific examples (non-exhaustive lists) of computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this document, computer-readable storage media can be any tangible medium containing or storing programs, which can be used by instruction execution systems, devices or devices or used in combination with them.

[0116] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0117] The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0118] Computer program code for performing the operation of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., using an Internet service provider to connect through the Internet).

[0119] In addition, the words "first, second, third, etc." or module A, module B, module C and other similar terms in the specification and claims are only used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that the specific order or sequence can be interchanged where permitted so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0120] In the above description, the numbers representing the steps, such as S110, S120, etc., do not necessarily mean that the steps will be executed accordingly. If permitted, the order of the steps can be interchanged or they can be executed simultaneously.

[0121] The term "comprising" as used in the description and claims should not be interpreted as being limited to what is listed thereafter; it does not exclude other elements or steps. Therefore, it should be interpreted as specifying the presence of the features, integers, steps or components mentioned, but does not exclude the presence or addition of one or more other features, integers, steps or components and groups thereof. Therefore, the expression "a device comprising means A and B" should not be limited to a device consisting of components A and B only.

[0122] References to "one embodiment" or "an embodiment" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present application. Therefore, the phrases "in one embodiment" or "in an embodiment" appearing in various places in this specification do not necessarily refer to the same embodiment, but may refer to the same embodiment. In addition, in one or more embodiments, the particular features, structures, or characteristics can be combined in any appropriate manner, as would be apparent to one of ordinary skill in the art from this disclosure.

[0123] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present application, all of which belong to the scope of protection of the present application.

Claims

1. A method for controlling a source-load automatic following system of a hydrogen fuel cell power generation system, characterized in that: include: Obtain hydrogen fuel cell power and lithium battery current; Judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current; When the lithium battery is not in a shallow charge and discharge state, a source-charge following action is performed to adjust the power of the hydrogen fuel cell so that the lithium battery is in a shallow charge and discharge state.

2. The method according to claim 1, characterized in that The step of judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current includes: Comparing the lithium battery current with a current adjustment threshold; When the lithium battery current is greater than or equal to the current adjustment threshold, or when the lithium battery current is less than or equal to the negative value of the current adjustment threshold, it indicates that the lithium battery is not in a shallow charge and discharge state.

3. The method according to claim 2, characterized in that When the lithium battery is not in a shallow charge and discharge state, performing a source-charge following action to adjust the power of the hydrogen fuel cell so that the lithium battery is in a shallow charge and discharge state includes: When the lithium battery current is greater than or equal to the current adjustment threshold, reducing the power of the hydrogen fuel cell to put the lithium battery in a shallow charging state; When the lithium battery current is less than or equal to the negative value of the current adjustment threshold, the power of the hydrogen fuel cell is increased to put the lithium battery in a shallow discharge state.

4. The method according to claim 1, characterized in that When the lithium battery is not in a shallow charge and discharge state, the method further includes: Obtain the hydrogen fuel cell current value and the lithium battery state of charge SOC value; Determine whether the state of charge (SOC) value of the lithium battery is within a SOC threshold range, and set a corresponding lithium battery operating current target value based on the determination result; Determining a current demand deviation according to the lithium battery current and the lithium battery operating current target value; Based on the current demand deviation, a source-load following action is performed to adjust the current value of the hydrogen fuel cell so that the current of the lithium battery changes; It is determined whether the current demand deviation is within the dead zone value range. If so, the adjustment is terminated; if not, the adjustment is continued.

5. The method according to claim 4, characterized in that The determining whether the state of charge (SOC) value of the lithium battery is within the SOC threshold range, and setting the corresponding lithium battery operating current target value based on the determination result, includes: When the state of charge (SOC) value of the lithium battery is greater than the maximum value of the SOC threshold range, setting a first lithium battery operating current target value; When the state of charge (SOC) value of the lithium battery is within the SOC threshold range, setting a second lithium battery operating current target value; When the state of charge (SOC) value of the lithium battery is less than the minimum value of the SOC threshold range, a third lithium battery operating current target value is set.

6. The method according to claim 4, characterized in that The determining the current demand deviation according to the lithium battery current and the lithium battery operating current target value includes: The difference between the lithium battery operating current target value and the lithium battery current is calculated as the current demand deviation.

7. The method according to claim 4, characterized in that Based on the current demand deviation, executing a source-load following action to adjust the current value of the hydrogen fuel cell includes: The hydrogen fuel cell current value is increased or decreased by half of the current demand deviation.

8. A source-load automatic following system control device for a hydrogen fuel cell power generation system, characterized in that: include: An information acquisition module, used to obtain the hydrogen fuel cell power and lithium battery current; A judging module, used for judging whether the lithium battery is in a shallow charge and discharge state according to the lithium battery current; The source-charge following control power adjustment module is used to perform the source-charge following action when the lithium battery is not in a shallow charge and discharge state, and adjust the power of the hydrogen fuel cell to put the lithium battery in a shallow charge and discharge state.

9. A computing device, characterized in that include: processor, and A memory having program instructions stored thereon, wherein when the program instructions are executed by the processor, the processor is caused to execute the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: Program instructions are stored thereon, and when the program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 7.

Images