Wind power hydrogen production system control method and storage medium

Abstract

The present invention provides a control method and storage medium for a wind power hydrogen production system. The method is applied to a wind power hydrogen production system, which includes: a wind power module, a multi-stage energy storage module and a hydrogen production module; the method includes: obtaining the parameters of the wind power module, and predicting the output power of the wind power module according to the parameters of the wind power module to obtain the predicted power; obtaining the rated power of the hydrogen production module and the minimum power of the hydrogen production module, and controlling the power of the hydrogen production module according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power. The present invention comprehensively regulates the power of the hydrogen production module according to the output power of the wind power module, and efficiently coordinates the use of energy in the system, which can effectively reduce the capacity of the multi-stage energy storage module and improve the economy of the system.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a wind power hydrogen production system control method and a storage medium. Background Art

[0002] With the exhaustion of fossil energy, green energy, mainly renewable energy, has developed rapidly, among which hydrogen energy is considered to be one of the important directions of future energy transformation. With the continuous deepening of wind turbine control technology and electrolyzer technology, in remote areas of my country with sufficient wind resources and weak power grid construction, wind turbines can be used to directly produce hydrogen on site, thus eliminating the embarrassing situation of high hydrogen production costs caused by the need to connect the electricity generated by wind turbines to the grid and high investment costs caused by multi-energy complementarity.

[0003] In the prior art, wind power hydrogen production systems usually balance the power difference between wind turbines and wind power hydrogen production systems by externally connecting large-capacity batteries and other energy storage devices, so that the wind power hydrogen production system can always operate stably at constant power. However, the size and cost of large-capacity energy storage devices are relatively high, and the economic efficiency is poor. Summary of the invention

[0004] The embodiment of the present invention provides a wind power hydrogen production system control method and a storage medium to solve the problem in the prior art that the wind power hydrogen production system needs to be externally connected to a large-capacity energy storage device and has poor economic efficiency.

[0005] In a first aspect, an embodiment of the present invention provides a wind power hydrogen production system control method, which is applied to a wind power hydrogen production system, wherein the wind power hydrogen production system comprises: a wind power module, a multi-stage energy storage module and a hydrogen production module; the method comprises:

[0006] Obtaining parameters of the wind power module, and predicting the output power of the wind power module according to the parameters of the wind power module to obtain predicted power;

[0007] The rated power of the hydrogen production module and the minimum power of the hydrogen production module are obtained, and the power of the hydrogen production module is controlled according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power.

[0008] In a second aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the wind power hydrogen production system control method provided in the first aspect or any possible implementation method of the first aspect are implemented.

[0009] The embodiment of the present invention provides a control method and storage medium for a wind power hydrogen production system. The method is applied to a wind power hydrogen production system, which includes: a wind power module, a multi-stage energy storage module and a hydrogen production module; the method includes: obtaining the parameters of the wind power module, and predicting the output power of the wind power module according to the parameters of the wind power module to obtain the predicted power; obtaining the rated power of the hydrogen production module and the minimum power of the hydrogen production module, and controlling the power of the hydrogen production module according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power. In the embodiment of the present invention, the power of the hydrogen production module is comprehensively regulated according to the output power of the wind power module, and the energy in the system is efficiently and coordinatedly utilized, which can effectively reduce the capacity of the multi-stage energy storage module and improve the economy of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0011] Figure 1 It is a structural schematic diagram of a wind power hydrogen production system provided by an embodiment of the present invention;

[0012] Figure 2 It is a flow chart of an implementation method of a wind power hydrogen production system control method provided by an embodiment of the present invention;

[0013] Figure 3 It is a flow chart of another wind power hydrogen production system control method provided by an embodiment of the present invention;

[0014] Figure 4 It is a structural schematic diagram of a wind power hydrogen production system control device provided by an embodiment of the present invention;

[0015] Figure 5 It is a schematic diagram of a terminal device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0016] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0018] See also Figure 1 , which shows a wind power hydrogen production system provided by an embodiment of the present invention, including: a wind power module, a multi-stage energy storage module and a hydrogen production module; Figure 1 The wind power module includes: a direct-drive wind turbine and an ACDC. The direct-drive wind turbine is connected to the DC bus through the ACDC and is the power supply module of the system. The multi-level energy storage module includes: an energy storage unit and a first DCDC. The energy storage unit is connected to the DC bus through the first DCDC and is the coordination module of the system. The hydrogen production module includes: a water electrolyzer and a second DCDC. The water electrolyzer is connected to the DC bus through the second DCDC and is the load module of the system.

[0019] refer to Figure 2 , which shows a flow chart of an implementation of a wind power hydrogen production system control method provided by an embodiment of the present invention. Specifically, the wind power hydrogen production system control method includes:

[0020] S101: Acquire parameters of a wind power module, and predict output power of the wind power module according to the parameters of the wind power module to obtain predicted power;

[0021] In order to achieve advanced control, the power of the wind power module is predicted in the embodiment of the present invention, and control is performed according to the predicted power.

[0022] Specifically, the long-term and short-term power information of the wind power module can be obtained, and the output power of the wind power module at the next moment can be predicted based on the wind speed-power curve analysis of the wind power module, so as to obtain the predicted power, thereby making the coordinated control more accurate and the energy conversion more efficient.

[0023] S102: Acquire the rated power of the hydrogen production module and the minimum power of the hydrogen production module, and control the power of the hydrogen production module according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power.

[0024] In the system, the wind power module is used as a power supply module to provide energy support for the entire system; the hydrogen production module is a load module that consumes energy in the system; the multi-level energy storage module is used as a coordination module in the system to ensure the balance of energy in the system. The power balance equation in the system is:

[0025]

[0026] in, is the actual output power of the wind power module, is the power of the hydrogen production module, is the power of the multi-stage energy storage module.

[0027] Based on the above balance equation, in the embodiment of the present invention, the power of the hydrogen production module is comprehensively regulated according to the output power of the wind power module, and the energy in the system is efficiently and coordinatedly utilized, which can effectively reduce the capacity of the multi-stage energy storage module. The capacity of the multi-stage energy storage module does not need to be large and the volume is small, thereby improving the economy of the system.

[0028] It should be noted that in order to ensure the normal and stable operation of each module, each module needs to meet certain constraints, as follows:

[0029] The output power constraint of the fan module is:

[0030] 0< ≤

[0031] in, is the maximum power of the fan module.

[0032] The power constraint of the hydrogen production module is:

[0033] < ≤

[0034] in, is the power of the hydrogen production module, is the minimum power of the hydrogen production module, is the rated power of the hydrogen production module.

[0035] Multi-level energy storage modules should meet the constraints of charge and discharge power and capacity. The charge and discharge power should be less than the maximum charge and discharge power and the minimum charge and discharge power, and the capacity should be less than the maximum capacity and greater than the minimum capacity.

[0036] In a possible implementation, S102 may include:

[0037] S1021: If the predicted power is not less than the rated power of the hydrogen production module, controlling the hydrogen production module to operate according to the rated power of the hydrogen production module;

[0038] When the predicted power is not less than the rated power of the hydrogen production module, it means that the power of the wind power module is sufficient to support the hydrogen production module to operate at the rated power. At this time, the hydrogen production module is controlled to operate at the rated power of the hydrogen production module to ensure the hydrogen production efficiency. The remaining energy can be used to power the multi-stage energy storage module.

[0039] S1022: If the predicted power is less than the rated power of the hydrogen production module and not less than the minimum power of the hydrogen production module, predict the wind speed, determine the first reference power according to the predicted wind speed, and control the hydrogen production module to operate according to the first reference power;

[0040] When the predicted power is less than the rated power of the hydrogen production module, it means that the power of the wind power module is not enough to support the hydrogen production module to operate at the rated power. If the hydrogen production module is to operate at the rated power, the difference in power needs to be supplemented by a multi-stage energy storage module, and the capacity of the multi-stage energy storage module needs to be very large.

[0041] Therefore, in the embodiment of the present invention, the power of the hydrogen production module is reduced, and only the power fluctuation part is supplemented by the multi-stage energy storage module. The capacity does not need to be very large, thereby reducing the volume and cost of the multi-stage energy storage module.

[0042] S1023: If the predicted power is less than the minimum power of the hydrogen production module, determine a second reference power according to the output power and capacity of the multi-stage energy storage module, and control the hydrogen production module to operate according to the second reference power.

[0043] Similarly, when the predicted power is less than the minimum power of the hydrogen production module, the normal operation of the hydrogen production module may not be guaranteed. Therefore, the power of the hydrogen production module is further reduced according to the output power and capacity of the multi-stage energy storage module.

[0044] In a possible implementation, the multi-stage energy storage module may include: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is greater than the charging current of the conventional energy storage unit;

[0045] In an embodiment of the present invention, a multi-stage energy storage module may include: a high-rate energy storage unit and a conventional energy storage unit, which are used to achieve comprehensive coordinated control of the system. Among them, the high-rate energy storage unit has a small capacity but a large charge and discharge current, and is used for fast and efficient charging and discharging; the conventional energy storage unit has a large capacity but a small charge and discharge current, and is used for stable and long-term power supply. Exemplarily, the capacity of a conventional energy storage unit may be 3 times the capacity of a high-rate energy storage unit, the charge and discharge current of a conventional energy storage unit may be 0.25C~0.5C, and the charge and discharge current of a high-rate energy storage unit may be 1C~3C; in an embodiment of the present invention, the electrical performance characteristics of the charge and discharge rates between different energy storage units are used to handle energy coordination tasks under different states and achieve optimal control of energy conversion.

[0046] S1021 may include:

[0047] 1. If the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is less than the maximum capacity of the conventional energy storage unit, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, and the predicted power minus the rated power of the hydrogen production module is taken as the first difference, and the high-rate energy storage unit and the conventional energy storage unit are controlled to charge according to the first difference;

[0048] refer to Figure 3 ,like ,and , indicating that the power of the wind power module is surplus, and both energy storage units are not fully charged, then the remaining power can be used to charge the two energy storage units.

[0049] The equilibrium formula of the system is as follows:

[0050]

[0051] Then the first difference = , along with changes with the changes in .

[0052] in, To predict power, is the rated power of the hydrogen production module, is the charge and discharge power of the high-rate energy storage unit, is the charging and discharging power of the conventional energy storage unit, is the power of the hydrogen production module.

[0053] 2. If the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is not less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is less than the maximum capacity of the conventional energy storage unit, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, and the predicted power minus the rated power of the hydrogen production module is taken as the second difference, and the conventional energy storage unit is controlled to charge according to the second difference;

[0054] Since the high-rate energy storage unit has a large charge and discharge current and a small capacity, when two energy storage units are charged at the same time, the high-rate energy storage unit will be fully charged first.

[0055] refer to Figure 3 ,like ,and , indicating that the power of the wind power module is surplus, and the high-rate energy storage unit is full, then the remaining power can be used to supply power to the conventional energy storage unit.

[0056] The equilibrium formula of the system is as follows:

[0057]

[0058] Then the second difference = , along with changes with the changes in .

[0059] 3. If the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is not less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is not less than the maximum capacity of the conventional energy storage unit, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, and the wind power module is controlled so that the output power of the wind power module is equal to the rated power of the hydrogen production module.

[0060] refer to Figure 3 ,like ,and , indicating that both energy storage units are fully charged. At this time, the remaining capacity has nowhere to be consumed. Then the output power of the fan module can be adjusted so that , to avoid wasting energy.

[0061] In one possible implementation, reference Figure 3 , controlling the wind power module so that the output power of the wind power module is equal to the rated power of the hydrogen production module, may include:

[0062] (1) If the predicted power is greater than the rated power of the wind power module, and the rated power of the wind power module is greater than the rated power of the hydrogen production module, the wind power module is subjected to variable pitch control so that the wind power module outputs a constant power according to the rated power of the hydrogen production module;

[0063] (2) If the predicted power is less than the rated power of the wind power module and greater than the rated power of the hydrogen production module, the wind power module is subjected to maximum power tracking so that the wind power module outputs according to the rated power of the hydrogen production module.

[0064] Based on the principle of direct-drive wind turbines, ( is the rated power of the wind power module), the maximum power tracking cannot be used to reduce the power to , can only control the pitch of the wind power module, control the wind power module to output constant wind speed and constant power according to the rated power of the hydrogen production module, and ensure .

[0065] when When the engine is running at high speed, there is no need for variable pitch control, only maximum power tracking is required, which reduces the difficulty of operation.

[0066] In a possible implementation, the multi-stage energy storage module includes: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is greater than the charging current of the conventional energy storage unit; S1022 may include:

[0067] 1. Predict the wind speed, determine the output power of the wind power module according to the predicted wind speed, and subtract the derated power from the output power of the wind power module to obtain the first reference power; wherein the first reference power is greater than the minimum power of the hydrogen production module;

[0068] 2. Control the wind power module to work according to the maximum power curve, and control the charging and discharging of the multi-stage energy storage module, so that the hydrogen production module works according to the first reference power.

[0069] refer to Figure 3 ,when When the wind speed is predicted, the output power is determined and derated as the first reference power, so that the output power of the wind power module is not much different from the power of the hydrogen production module, and then the charging and discharging are adjusted through the multi-stage energy storage module. Since the output power of the wind power module is not much different from the power of the hydrogen production module, the capacity of the multi-stage energy storage module does not need to be large.

[0070] Specifically, the output power of the wind power module can be determined according to Table 1 , thereby reducing the first reference power For example, if the wind speed is 5, then the calculation is 600KW, the first reference power is 550KW, the two powers are close, and Less than .

[0071] Table 1 Wind speed-power comparison table

[0072]

[0073] In a possible implementation, controlling the charging and discharging of the multi-stage energy storage module so that the hydrogen production module operates according to the first reference power may include:

[0074] (1) If the capacity of the high-rate energy storage unit is greater than the minimum capacity of the high-rate energy storage unit, controlling the high-rate energy storage unit to charge and discharge so that the hydrogen production module operates according to the first reference power;

[0075] In a possible implementation, controlling the charging and discharging of the high-rate energy storage unit so that the hydrogen production module operates according to the first reference power may include:

[0076] The difference between the predicted power and the first reference power is taken as the third difference, and the high-rate energy storage unit is controlled to charge and discharge according to the third difference; wherein, when the third difference is positive, the high-rate energy storage unit is charged; and when the third difference is negative, the high-rate energy storage unit is discharged.

[0077] Based on the above, reference Figure 3 ,when ,and , then the equilibrium formula is satisfied:

[0078]

[0079] The third difference = The second-level power fluctuations caused by wind speed fluctuations are supported and coordinated by high-rate energy storage units.

[0080] (2) If the capacity of the high-rate energy storage unit is less than the reserve capacity of the high-rate energy storage unit and the capacity of the conventional energy storage unit is greater than the minimum capacity of the conventional energy storage unit, the conventional energy storage unit is controlled to charge the high-rate energy storage unit.

[0081] Specifically, refer to Figure 1 , switches K1, K2, K3 and K4 are provided between the high-rate energy storage unit and the conventional energy storage unit, and the high-rate energy storage unit can be charged and discharged separately, the conventional energy storage unit can be charged and discharged separately, and the conventional energy storage unit can charge the high-rate energy storage unit, etc. The on-off control logic of each switch is a conventional technical means, and will not be described in detail here.

[0082] Exemplarily, the reserve capacity of the high-rate energy storage unit may be 0.95 times the maximum capacity.

[0083] That is, reference Figure 3 ,when ,and hour, The second-level power fluctuations caused by wind speed fluctuations are supported and coordinated by high-rate energy storage units, while conventional energy storage units charge high-rate energy storage units to ensure .

[0084] In a possible implementation, the multi-stage energy storage module includes: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is greater than the charging current of the conventional energy storage unit; S1023 may include:

[0085] 1. If the predicted power is less than the minimum power of the hydrogen production module, the output power of the conventional energy storage unit is greater than the minimum power of the hydrogen production module, and the capacity of the conventional energy storage unit is greater than the minimum capacity of the conventional energy storage unit, the minimum power of the hydrogen production module is used as the second reference power, the difference between the minimum power of the hydrogen production module and the predicted power is used as the fourth difference, and the conventional energy storage unit is controlled to discharge according to the fourth difference;

[0086] refer to Figure 3 ,when When the wind power module is not enough to support the hydrogen production module to work at the minimum power, the conventional energy storage unit provides stable power support for the hydrogen production module to ensure ,at this time = .

[0087] 2. If the predicted power is less than the minimum power of the hydrogen production module and the output power of the conventional energy storage unit is less than the minimum power of the hydrogen production module, or the predicted power is less than the minimum power of the hydrogen production module and the capacity of the conventional energy storage unit is less than the minimum capacity of the conventional energy storage unit, the second reference power is 0, and the conventional energy storage unit is controlled to charge according to the predicted power.

[0088] refer to Figure 3 ,when , indicating that the conventional energy storage unit is insufficient, and the hydrogen production module is controlled to shut down.

[0089] In one possible implementation, reference Figure 1 , the wind power hydrogen production system may also include: a liquid cooling module; the liquid cooling module is used to cool the multi-stage energy storage module;

[0090] The above method may further include:

[0091] S103: Obtaining the charge and discharge current of the multi-stage energy storage module, and controlling the working efficiency of the liquid cooling module according to the charge and discharge current of the multi-stage energy storage module.

[0092] In the embodiment of the present invention, a liquid cooling module can also be provided to cool the multi-stage energy storage module. For example, the multi-stage energy storage module includes: a high-rate energy storage unit and a conventional energy storage unit, and a liquid cooling module is provided for the high-rate energy storage unit and the conventional energy storage unit, respectively. The liquid cooling module performs early pre-cooling according to the charging current set in the manager to improve the safe operation capability of the system. Specifically, the cooling efficiency of the liquid cooling module can be determined according to Table 2 and Table 3.

[0093] Table 2 Charging current and cooling efficiency of liquid cooling module

[0094]

[0095] Table 3 Correspondence between discharge current and cooling efficiency of liquid cooling module

[0096]

[0097] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0098] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0099] Figure 4The structure diagram of the wind power hydrogen production system control device provided by the embodiment of the present invention is shown. For the convenience of explanation, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:

[0100] like Figure 4 As shown, the wind power hydrogen production system control device includes:

[0101] The wind power prediction module 21 is used to obtain the parameters of the wind power module and predict the output power of the wind power module according to the parameters of the wind power module to obtain the predicted power;

[0102] The comprehensive control module 22 is used to obtain the rated power of the hydrogen production module and the minimum power of the hydrogen production module, and control the power of the hydrogen production module according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power.

[0103] Multi-level energy storage modules should meet the constraints of charge and discharge power and capacity. The charge and discharge power should be less than the maximum charge and discharge power and the minimum charge and discharge power, and the capacity should be less than the maximum capacity and greater than the minimum capacity.

[0104] In a possible implementation, the comprehensive control module 22 may include:

[0105] A first hydrogen production power control unit, used for controlling the hydrogen production module to operate according to the rated power of the hydrogen production module if the predicted power is not less than the rated power of the hydrogen production module;

[0106] a second hydrogen production power control unit, configured to predict the wind speed if the predicted power is less than the rated power of the hydrogen production module and not less than the minimum power of the hydrogen production module, determine the first reference power according to the predicted wind speed, and control the hydrogen production module to operate according to the first reference power;

[0107] The third hydrogen production power control unit is used to determine the second reference power according to the output power and capacity of the multi-stage energy storage module if the predicted power is less than the minimum power of the hydrogen production module, and control the hydrogen production module to operate according to the second reference power.

[0108] In a possible implementation, the multi-stage energy storage module may include: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is greater than the charging current of the conventional energy storage unit; the first hydrogen production power control unit may include:

[0109] A first control subunit is used to control the hydrogen production module to operate according to the rated power of the hydrogen production module if the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is less than the maximum capacity of the conventional energy storage unit, and to subtract the rated power of the hydrogen production module from the predicted power as a first difference, and to control the high-rate energy storage unit and the conventional energy storage unit to charge according to the first difference;

[0110] The second control subunit is used to control the hydrogen production module to operate according to the rated power of the hydrogen production module if the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is not less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is less than the maximum capacity of the conventional energy storage unit, and to subtract the rated power of the hydrogen production module from the predicted power as a second difference, and to control the conventional energy storage unit to charge according to the second difference;

[0111] The third control subunit is used to control the hydrogen production module to operate according to the rated power of the hydrogen production module if the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is not less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is not less than the maximum capacity of the conventional energy storage unit, and to control the wind power module so that the output power of the wind power module is equal to the rated power of the hydrogen production module.

[0112] In a possible implementation manner, the third control subunit may be specifically used for:

[0113] 1. If the predicted power is greater than the rated power of the wind power module, and the rated power of the wind power module is greater than the rated power of the hydrogen production module, the wind power module is subjected to variable pitch control so that the wind power module outputs a constant power according to the rated power of the hydrogen production module;

[0114] 2. If the predicted power is less than the rated power of the wind power module and greater than the rated power of the hydrogen production module, the wind power module is subjected to maximum power tracking so that the wind power module outputs according to the rated power of the hydrogen production module.

[0115] In a possible implementation, the multi-stage energy storage module may include: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is greater than the charging current of the conventional energy storage unit; the second hydrogen production power control unit may include:

[0116] The fourth control subunit is used to predict the wind speed, determine the output power of the wind power module according to the predicted wind speed, and subtract the derated power from the output power of the wind power module as the first reference power; wherein the first reference power is greater than the minimum power of the hydrogen production module;

[0117] The fifth control subunit is used to control the wind power module to work according to the maximum power curve, and control the charging and discharging of the multi-stage energy storage module, so that the hydrogen production module works according to the first reference power.

[0118] In a possible implementation manner, the fifth control subunit may be specifically used for:

[0119] 1. If the capacity of the high-rate energy storage unit is greater than the minimum capacity of the high-rate energy storage unit, the high-rate energy storage unit is controlled to charge and discharge so that the hydrogen production module operates according to the first reference power;

[0120] 2. If the capacity of the high-rate energy storage unit is less than the reserve capacity of the high-rate energy storage unit and the capacity of the conventional energy storage unit is greater than the minimum capacity of the conventional energy storage unit, the conventional energy storage unit is controlled to charge the high-rate energy storage unit.

[0121] In a possible implementation, controlling the charging and discharging of the high-rate energy storage unit so that the hydrogen production module operates according to the first reference power may specifically include:

[0122] The difference between the predicted power and the first reference power is taken as the third difference, and the high-rate energy storage unit is controlled to charge and discharge according to the third difference; wherein, when the third difference is positive, the high-rate energy storage unit is charged; and when the third difference is negative, the high-rate energy storage unit is discharged.

[0123] In a possible implementation, the multi-stage energy storage module may include: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is greater than the charging current of the conventional energy storage unit; the third hydrogen production power control unit may include:

[0124] a sixth control subunit, for taking the minimum power of the hydrogen production module as the second reference power, taking the difference between the minimum power of the hydrogen production module and the predicted power as the fourth difference, and controlling the conventional energy storage unit to discharge according to the fourth difference if the predicted power is less than the minimum power of the hydrogen production module, the output power of the conventional energy storage unit is greater than the minimum power of the hydrogen production module, and the capacity of the conventional energy storage unit is greater than the minimum capacity of the conventional energy storage unit;

[0125] The seventh control subunit is used to control the conventional energy storage unit to charge according to the predicted power if the predicted power is less than the minimum power of the hydrogen production module and the output power of the conventional energy storage unit is less than the minimum power of the hydrogen production module, or the predicted power is less than the minimum power of the hydrogen production module and the capacity of the conventional energy storage unit is less than the minimum capacity of the conventional energy storage unit.

[0126] In one possible implementation, reference Figure 1 , the wind power hydrogen production system may also include: a liquid cooling module; the liquid cooling module is used to cool the multi-stage energy storage module;

[0127] The above device may also include:

[0128] The liquid cooling control module is used to obtain the charge and discharge current of the multi-stage energy storage module and control the working efficiency of the liquid cooling module according to the charge and discharge current of the multi-stage energy storage module.

[0129] Figure 5 Schematic diagram of a terminal device 3 provided in an embodiment of the present invention. Figure 5 As shown, the terminal device 3 of this embodiment includes: a processor 30 and a memory 31. The memory 31 is used to store a computer program 32, and the processor 30 is used to call and run the computer program 32 stored in the memory 31 to execute the steps in the above-mentioned wind power hydrogen production system control method embodiments, such as Figure 2 Alternatively, the processor 30 is used to call and run the computer program 32 stored in the memory 31 to implement the functions of each module / unit in the above-mentioned device embodiments, such as Figure 4 The functions of modules 21 to 22 are shown.

[0130] Exemplarily, the computer program 32 may be divided into one or more modules / units, one or more modules / units are stored in the memory 31, and are executed by the processor 30 to implement the present invention. One or more modules / units may be a series of computer program instruction segments that can implement specific functions, and the instruction segments are used to describe the execution process of the computer program 32 in the terminal device 3. For example, the computer program 32 may be divided into Figure 4 Modules / units 21 to 22 are shown.

[0131] The terminal device 3 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The terminal device 3 may include, but is not limited to, a processor 30 and a memory 31. Those skilled in the art will appreciate that Figure 5 It is only an example of terminal device 3 and does not constitute a limitation on terminal device 3. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal may also include input and output devices, network access devices, buses, etc.

[0132] The processor 30 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0133] The memory 31 may be an internal storage unit of the terminal device 3, such as a hard disk or memory of the terminal device 3. The memory 31 may also be an external storage device of the terminal device 3, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal device 3. Further, the memory 31 may also include both an internal storage unit and an external storage device of the terminal device 3. The memory 31 is used to store computer programs and other programs and data required by the terminal. The memory 31 may also be used to temporarily store data that has been output or is to be output.

[0134] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0135] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0136] Those skilled 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 the present invention.

[0137] In the embodiments provided by the present invention, it should be understood that the disclosed devices / terminals and methods can be implemented in other ways. For example, the device / terminal embodiments described above are only schematic. For example, the division of the modules or 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.

[0138] 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.

[0139] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0140] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium.

[0141] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A wind power hydrogen production system control method, characterized in that: Applied to a wind power hydrogen production system, the wind power hydrogen production system comprises: a wind power module, a multi-stage energy storage module and a hydrogen production module; the method comprises: Acquiring parameters of the wind power module, and predicting the output power of the wind power module according to the parameters of the wind power module to obtain predicted power; Acquire the rated power of the hydrogen production module and the minimum power of the hydrogen production module, and control the power of the hydrogen production module according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power; The controlling the power of the hydrogen production module according to the rated power of the hydrogen production module, the minimum power of the hydrogen production module and the predicted power includes: If the predicted power is not less than the rated power of the hydrogen production module, controlling the hydrogen production module to operate according to the rated power of the hydrogen production module; If the predicted power is less than the rated power of the hydrogen production module and not less than the minimum power of the hydrogen production module, the wind speed is predicted, a first reference power is determined according to the predicted wind speed, and the hydrogen production module is controlled to operate according to the first reference power; If the predicted power is less than the minimum power of the hydrogen production module, a second reference power is determined according to the output power and capacity of the multi-stage energy storage module, and the hydrogen production module is controlled to operate according to the second reference power; The multi-stage energy storage module includes: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is larger than the charging current of the conventional energy storage unit; the wind speed is predicted, a first reference power is determined according to the predicted wind speed, and the hydrogen production module is controlled to operate according to the first reference power, including: Predicting the wind speed, determining the output power of the wind power module according to the predicted wind speed, and subtracting the derated power from the output power of the wind power module to obtain the first reference power; wherein the first reference power is greater than the minimum power of the hydrogen production module; The wind power module is controlled to operate according to the maximum power curve, and the multi-stage energy storage module is controlled to charge and discharge, so that the hydrogen production module operates according to the first reference power.

2. The wind power hydrogen production system control method according to claim 1, characterized in that: The multi-stage energy storage module includes: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is larger than the charging current of the conventional energy storage unit; if the predicted power is not less than the rated power of the hydrogen production module, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, including: If the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is less than the maximum capacity of the conventional energy storage unit, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, and the predicted power minus the rated power of the hydrogen production module is taken as the first difference, and the high-rate energy storage unit and the conventional energy storage unit are controlled to charge according to the first difference; If the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is not less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is less than the maximum capacity of the conventional energy storage unit, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, and the predicted power minus the rated power of the hydrogen production module is taken as the second difference, and the conventional energy storage unit is controlled to charge according to the second difference; If the predicted power is not less than the rated power of the hydrogen production module, the capacity of the high-rate energy storage unit is not less than the maximum capacity of the high-rate energy storage unit, and the capacity of the conventional energy storage unit is not less than the maximum capacity of the conventional energy storage unit, the hydrogen production module is controlled to operate according to the rated power of the hydrogen production module, and the wind power module is controlled so that the output power of the wind power module is equal to the rated power of the hydrogen production module.

3. The wind power hydrogen production system control method according to claim 2, characterized in that: The controlling the wind power module so that the output power of the wind power module is equal to the rated power of the hydrogen production module includes: If the predicted power is greater than the rated power of the wind power module, and the rated power of the wind power module is greater than the rated power of the hydrogen production module, the wind power module is subjected to variable pitch control so that the wind power module outputs a constant power according to the rated power of the hydrogen production module; If the predicted power is less than the rated power of the wind power module and the predicted power is greater than the rated power of the hydrogen production module, the wind power module is subjected to maximum power tracking so that the wind power module outputs according to the rated power of the hydrogen production module.

4. The wind power hydrogen production system control method according to claim 1, characterized in that: The controlling the charging and discharging of the multi-stage energy storage module so that the hydrogen production module operates according to the first reference power includes: If the capacity of the high-rate energy storage unit is greater than the minimum capacity of the high-rate energy storage unit, controlling the high-rate energy storage unit to charge and discharge so that the hydrogen production module operates according to the first reference power; If the capacity of the high-rate energy storage unit is less than the reserve capacity of the high-rate energy storage unit and the capacity of the conventional energy storage unit is greater than the minimum capacity of the conventional energy storage unit, the conventional energy storage unit is controlled to charge the high-rate energy storage unit.

5. The wind power hydrogen production system control method according to claim 4, characterized in that: The controlling the charging and discharging of the high-rate energy storage unit so that the hydrogen production module operates according to the first reference power includes: The difference between the predicted power and the first reference power is taken as a third difference, and the high-rate energy storage unit is controlled to charge and discharge according to the third difference; wherein, when the third difference is positive, the high-rate energy storage unit is charged; and when the third difference is negative, the high-rate energy storage unit is discharged.

6. The wind power hydrogen production system control method according to claim 1, characterized in that: The multi-stage energy storage module includes: a high-rate energy storage unit and a conventional energy storage unit; wherein the capacity of the high-rate energy storage unit is smaller than the capacity of the conventional energy storage unit, and the charging current of the high-rate energy storage unit is larger than the charging current of the conventional energy storage unit; the second reference power is determined according to the output power and capacity of the multi-stage energy storage module, and the hydrogen production module is controlled to operate according to the second reference power, including: If the predicted power is less than the minimum power of the hydrogen production module, the output power of the conventional energy storage unit is greater than the minimum power of the hydrogen production module, and the capacity of the conventional energy storage unit is greater than the minimum capacity of the conventional energy storage unit, the minimum power of the hydrogen production module is used as the second reference power, the difference between the minimum power of the hydrogen production module and the predicted power is used as the fourth difference, and the conventional energy storage unit is controlled to discharge according to the fourth difference; If the predicted power is less than the minimum power of the hydrogen production module and the output power of the conventional energy storage unit is less than the minimum power of the hydrogen production module, or the predicted power is less than the minimum power of the hydrogen production module and the capacity of the conventional energy storage unit is less than the minimum capacity of the conventional energy storage unit, the second reference power is 0, and the conventional energy storage unit is controlled to charge according to the predicted power.

7. The wind power hydrogen production system control method according to any one of claims 1 to 6, characterized in that: The wind power hydrogen production system further includes: a liquid cooling module; the liquid cooling module is used to cool the multi-stage energy storage module; The method further comprises: The charge and discharge current of the multi-stage energy storage module is obtained, and the working efficiency of the liquid cooling module is controlled according to the charge and discharge current of the multi-stage energy storage module.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the wind power hydrogen production system control method as described in any one of claims 1 to 7 are implemented.

Images