Off-grid hydrogen production system capacity configuration method and device, medium, equipment and product

Abstract

The present disclosure relates to an off-grid hydrogen production system capacity configuration method, device, medium, equipment and product. The method comprises: obtaining a plurality of capacity parameter sets; determining the tracking error of the hydrogen production equipment corresponding to the first capacity parameter set, and determining the hydrogen production cost and energy storage configuration capacity corresponding to the first capacity parameter set if the tracking error is less than a preset value; taking the capacity parameter set corresponding to the lowest hydrogen production cost as the second capacity parameter set; taking the second ALK electrolyzer capacity, the second PEM electrolyzer capacity and the second installed capacity in the second capacity parameter set as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer and the rated installed capacity of the power generation equipment respectively, and taking the energy storage configuration capacity corresponding to the second capacity parameter set as the target energy storage configuration capacity of the hydrogen production equipment. Through the above scheme, the off-grid hydrogen production system can meet the efficient, economic and safe operation and high proportion of new energy output.

Description

Technical Field

[0001] This disclosure relates to the field of hydrogen production technology, specifically to a method, apparatus, medium, equipment, and product for configuring the capacity of an off-grid hydrogen production system. Background Technology

[0002] With the rapid development of renewable energy and hydrogen energy-related technologies, hydrogen production equipment has shown great potential in off-grid areas or regions with unstable power grids. Off-grid hydrogen production involves directly supplying electricity generated by wind and solar power plants to electrolyzers for hydrogen production without passing through the grid. However, how to achieve high-precision tracking of renewable energy power generation by hydrogen production equipment, while ensuring the efficient and stable operation of the equipment, based on the volatility of renewable energy and the performance characteristics of electrolyzers, remains a pressing issue. Summary of the Invention

[0003] The purpose of this disclosure is to provide a method, apparatus, medium, equipment, and product for configuring the capacity of an off-grid hydrogen production system, which enables the off-grid hydrogen production system to meet the requirements of efficient, economical, and safe operation and high-proportion consumption of new energy output.

[0004] To achieve the above objectives, in a first aspect, this disclosure provides a method for configuring the capacity of an off-grid hydrogen production system. The off-grid hydrogen production system includes a power generation unit and a hydrogen production unit. The hydrogen production unit is used to convert electrical energy generated by the power generation unit using new energy sources into hydrogen energy. The hydrogen production unit includes multiple ALK electrolyzers and multiple PEM electrolyzers. The method includes: Multiple sets of capacity parameters are obtained, wherein each set of capacity parameters includes a preset ALK electrolyzer capacity, a PEM electrolyzer capacity, and the installed capacity of the power generation equipment; The system iterates through the multiple sets of capacity parameters and takes the currently iterated set of capacity parameters as the first set of capacity parameters. Based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first set of capacity parameters, the system determines the tracking error of the hydrogen production equipment corresponding to the first set of capacity parameters. If the tracking error is less than a preset value, the system determines the hydrogen production cost and energy storage configuration capacity corresponding to the first set of capacity parameters. The tracking error represents the deviation between the operating power of the hydrogen production equipment and the power generation power of the power generation equipment. The set of capacity parameters corresponding to the lowest hydrogen production cost is used as the second set of capacity parameters. The second ALK electrolyzer capacity, the second PEM electrolyzer capacity, and the second installed capacity in the second set of capacity parameters are respectively taken as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer, and the rated installed capacity of the power generation equipment, and the energy storage configuration capacity corresponding to the second set of capacity parameters is taken as the target energy storage configuration capacity of the hydrogen production equipment.

[0005] Secondly, this disclosure provides a capacity configuration device for an off-grid hydrogen production system, characterized in that the off-grid hydrogen production system includes a power generation device and a hydrogen production device, the hydrogen production device being used to convert electrical energy generated by the power generation device using new energy sources into hydrogen energy, the hydrogen production device including multiple ALK electrolyzers and multiple PEM electrolyzers, and the device comprising: The acquisition module is used to acquire multiple sets of capacity parameters, wherein each set of capacity parameters includes a preset ALK electrolyzer capacity, a PEM electrolyzer capacity, and the installed capacity of the power generation equipment; The processing module is used to traverse the multiple sets of capacity parameters, and take the currently traversed set of capacity parameters as the first set of capacity parameters. Based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first set of capacity parameters, the module determines the tracking error of the hydrogen production equipment corresponding to the first set of capacity parameters. If the tracking error is less than a preset value, the module determines the hydrogen production cost and energy storage configuration capacity corresponding to the first set of capacity parameters. The tracking error represents the deviation between the operating power of the hydrogen production equipment and the power generation power of the power generation equipment. The first determining module is used to take the set of capacity parameters corresponding to the lowest hydrogen production cost as the second set of capacity parameters. The second determining module is used to take the second ALK electrolyzer capacity, the second PEM electrolyzer capacity, and the second installed capacity in the second capacity parameter set as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer, and the rated installed capacity of the power generation equipment, respectively, and to take the energy storage configuration capacity corresponding to the second capacity parameter set as the target energy storage configuration capacity of the hydrogen production equipment.

[0006] Thirdly, this disclosure provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the off-grid hydrogen production system capacity configuration method provided in the first aspect of this disclosure.

[0007] Fourthly, this disclosure provides an electronic device, comprising: A memory on which computer programs are stored; A processor is configured to execute the computer program in the memory to implement the steps of the off-grid hydrogen production system capacity configuration method provided in the first aspect of this disclosure.

[0008] Fifthly, this disclosure provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the off-grid hydrogen production system capacity configuration method provided in the first aspect of this disclosure.

[0009] Through the above technical solution, multiple sets of capacity parameters are obtained. Each set includes preset ALK electrolyzer capacity, PEM electrolyzer capacity, and installed capacity of power generation equipment. The currently traversed set of capacity parameters is taken as the first set. If the tracking error corresponding to the first set is less than a preset value, the hydrogen production cost and energy storage configuration capacity corresponding to the first set are determined. The set of capacity parameters corresponding to the lowest hydrogen production cost is taken as the second set. If the tracking error corresponding to the second set is less than the preset value and the hydrogen production cost is the lowest, then the capacity configuration in the second set is optimal for the off-grid hydrogen production system. Therefore, the rated capacity of the PEM electrolyzer and the rated capacity of the ALK electrolyzer can be configured separately, and the target energy storage configuration capacity of the hydrogen production equipment and the rated installed capacity of the power generation equipment can be determined simultaneously. The off-grid hydrogen production system configured according to the second set of capacity parameters enables the off-grid hydrogen production system to meet the requirements of efficient, economical, safe operation and high-proportion consumption of new energy output.

[0010] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart illustrating a capacity configuration method for an off-grid hydrogen production system according to an exemplary embodiment.

[0012] Figure 2 This is a flowchart illustrating a method for determining the tracking error of a hydrogen production device corresponding to a first set of capacity parameters, according to an exemplary embodiment.

[0013] Figure 3 This is a schematic diagram illustrating an example of a per-unit output curve.

[0014] Figure 4 This is an exemplary embodiment illustrating a hydrogen production device in the first... i A schematic diagram of the target overall operating power at any given time.

[0015] Figure 5 This is an exemplary schematic diagram of energy storage capacity distribution.

[0016] Figure 6 This is a block diagram illustrating an off-grid hydrogen production system capacity configuration device according to an exemplary embodiment.

[0017] Figure 7 This is a block diagram illustrating an electronic device according to an exemplary embodiment.

[0018] Figure 8 This is a block diagram illustrating an electronic device according to an exemplary embodiment. Detailed Implementation

[0019] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0020] It should be noted that all actions involving the acquisition of signals, information, or data in this disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the location is situated, and with authorization from the owner of the relevant device.

[0021] Currently, hybrid hydrogen production systems, which combine alkaline electrolyzers (ALK) and proton exchange membrane electrolyzers (PEM), show great potential in off-grid areas or regions with unstable grids. However, most hydrogen production equipment in related technologies primarily uses a single type of electrolyzer, employing a high proportion of energy storage batteries to improve the hydrogen production system's ability to follow the power generation system, but this results in poor economic performance. Furthermore, current research on the capacity allocation of ALK and PEM electrolyzers in hybrid hydrogen production systems lacks a comprehensive consideration of equipment lifespan, reliability, energy efficiency, safety, and off-grid tracking performance.

[0022] In view of this, this disclosure provides a method, apparatus, medium, equipment and product for configuring the capacity of an off-grid hydrogen production system, so as to ensure that the off-grid hydrogen production system can meet the requirements of efficient, economical and safe operation and high proportion of new energy output.

[0023] Figure 1 This is a flowchart illustrating a capacity configuration method for an off-grid hydrogen production system according to an exemplary embodiment. This method can be applied to electronic devices with processing capabilities, such as servers and personal computers. Figure 1As shown, the method may include steps 11 to 14. In this disclosure, the off-grid hydrogen production system can be viewed as an integrated system including power generation equipment and hydrogen production equipment. That is, the off-grid hydrogen production system includes power generation equipment and hydrogen production equipment. The hydrogen production equipment is used to convert the electrical energy generated by the power generation equipment using new energy sources into hydrogen energy. The hydrogen production equipment includes multiple ALK electrolyzers and multiple PEM electrolyzers. The new energy sources can be wind energy, solar energy, solar energy, etc., and the power generation equipment can be wind power generation equipment or photovoltaic power generation equipment.

[0024] In step 11, multiple sets of capacity parameters are obtained.

[0025] Each set of capacity parameters includes preset ALK electrolyzer capacity, PEM electrolyzer capacity, and installed capacity of power generation equipment. Specifically, the ALK and PEM electrolyzer capacities are capacity parameters for the hydrogen production equipment, while the installed capacity is the capacity parameter for the power generation equipment.

[0026] For example, the capacity sequence of an ALK electrolyzer is [1MW, 2MW, 3MW, 4MW], indicating that the rated capacity of the ALK electrolyzer can be set to 1MW, 2MW, 3MW, or 4MW. The capacity sequence of a PEM electrolyzer is [0.5MW, 1MW], indicating that the rated capacity of the PEM electrolyzer can be set to 0.5MW or 1MW.

[0027] A hydrogen production unit can include multiple modules, each module including a PEM electrolyzer and an ALK electrolyzer, with identical electrolyzer configurations within each module. Module capacity represents the sum of the capacities of all electrolyzers within the module; this capacity can be considered as power. For example, if the rated capacity of the hydrogen production unit is set at 30MW and the module capacity is set at 5MW, then the hydrogen production unit has 6 modules. To meet the 5MW module capacity requirement, one possible configuration is to include one 4MW ALK electrolyzer and one 1MW PEM electrolyzer in the module; another possible configuration is to include one 4MW ALK electrolyzer and two 0.5MW PEM electrolyzers in the module; yet another possible configuration is to include two 2MW ALK electrolyzers and two 0.5MW PEM electrolyzers in the module.

[0028] Therefore, to meet the requirements of the rated capacity and module capacity of the hydrogen production equipment, there are multiple capacity parameter configuration schemes for the capacity and quantity settings of the PEM electrolyzer and ALK electrolyzer in each module, corresponding to multiple sets of capacity parameters. These sets of capacity parameters may also include the number of ALK electrolyzers and the number of PEM electrolyzers in the module. For example, one set of capacity parameters may include an ALK electrolyzer capacity of 4MW, one ALK electrolyzer in the module, a PEM electrolyzer capacity of 1MW, one PEM electrolyzer in the module, and an installed capacity of 56.4MW for the power generation equipment. Another set of capacity parameters may include an ALK electrolyzer capacity of 4MW, one ALK electrolyzer in the module, a PEM electrolyzer capacity of 0.5MW, two PEM electrolyzers in the module, and an installed capacity of 56.4MW for the power generation equipment.

[0029] It should be noted that the set of capacity parameters can be preset, and this disclosure does not limit the number of capacity parameter sets.

[0030] In step 12, multiple capacity parameter sets are traversed, and the currently traversed capacity parameter set is taken as the first capacity parameter set. Based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first capacity parameter set, the tracking error of the hydrogen production equipment corresponding to the first capacity parameter set is determined. If the tracking error is less than a preset value, the hydrogen production cost and energy storage configuration capacity corresponding to the first capacity parameter set are determined.

[0031] The tracking error characterizes the deviation between the operating power of the hydrogen production equipment and the power generation power of the power generation equipment. In other words, it indicates whether the hydrogen production capacity of the hydrogen production equipment can keep up with the power generation output. If the hydrogen production capacity of the equipment is high, and it can convert all the electrical energy transmitted from the power generation equipment into hydrogen energy, the tracking error is small. If the hydrogen production capacity is low, and the conversion rate of electrical energy to hydrogen energy is low, the tracking error is large. A tracking error less than a preset value indicates a small tracking error, and the hydrogen production cost and energy storage configuration capacity corresponding to the first capacity parameter set can continue to be calculated. If the tracking error is greater than or equal to the preset value, the corresponding first capacity parameter set is not suitable for the off-grid hydrogen production system, and the hydrogen production cost and energy storage configuration capacity corresponding to this first capacity parameter set can be disregarded. The energy storage configuration capacity characterizes the deviation between the operating power of the hydrogen production equipment and the installed power of the power generation equipment, and can be considered as a portion of the capacity reserved for the hydrogen production equipment.

[0032] In step 13, the set of capacity parameters corresponding to the lowest hydrogen production cost is used as the second set of capacity parameters.

[0033] In step 14, the capacity of the second ALK electrolyzer, the capacity of the second PEM electrolyzer, and the second installed capacity in the second capacity parameter set are respectively used as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer, and the rated installed capacity of the power generation equipment, and the energy storage configuration capacity corresponding to the second capacity parameter set is used as the target energy storage configuration capacity of the hydrogen production equipment.

[0034] The tracking error and hydrogen production cost can be hydrogen production performance data of the hydrogen production equipment predicted based on the capacity parameters in the capacity parameter set. The capacity parameter set corresponding to the lowest hydrogen production cost indicates that not only is the tracking error of the capacity parameter set less than the preset value, but the hydrogen production cost is also the lowest. Therefore, the second capacity parameter set is the optimal one among multiple capacity parameter sets.

[0035] Through the above technical solution, multiple sets of capacity parameters are obtained. Each set includes preset ALK electrolyzer capacity, PEM electrolyzer capacity, and installed capacity of power generation equipment. The currently traversed set of capacity parameters is taken as the first set. If the tracking error corresponding to the first set is less than a preset value, the hydrogen production cost and energy storage configuration capacity corresponding to the first set are determined. The set of capacity parameters corresponding to the lowest hydrogen production cost is taken as the second set. If the tracking error corresponding to the second set is less than the preset value and the hydrogen production cost is the lowest, then the capacity configuration in the second set is optimal for the off-grid hydrogen production system. Therefore, the rated capacity of the PEM electrolyzer and the rated capacity of the ALK electrolyzer can be configured separately, and the target energy storage configuration capacity of the hydrogen production equipment and the rated installed capacity of the power generation equipment can be determined simultaneously. The off-grid hydrogen production system configured according to the second set of capacity parameters enables the off-grid hydrogen production system to meet the requirements of efficient, economical, safe operation and high-proportion consumption of new energy output.

[0036] Figure 2 This is a flowchart illustrating a method for determining the tracking error of a hydrogen production device corresponding to a first set of capacity parameters, according to an exemplary embodiment. Figure 2 As shown, it may include steps 21 to 24.

[0037] In step 21, the per-unit output curve of the power generation equipment under the first installed capacity is obtained.

[0038] The per-unit output curve is used to characterize the power generation equipment at... N The power generation at different times. NThe value is a positive integer. Considering that renewable energy output based on a large timescale of hours cannot accurately assess the actual response characteristics of electrolyzers in off-grid mode, in this disclosure, the per-unit output curve can be a per-unit output curve on the order of seconds, i.e., the time period can be seconds. Different installed capacities of power generation equipment can correspond to different per-unit output curves. For example, this per-unit output curve can be obtained from the historical operating data of the power generation equipment, representing the actual power generation curve of the power generation equipment at the first installed capacity, or it can be obtained through a model, representing the power generation curve of the power generation equipment at the first installed capacity. Figure 3 This is a schematic diagram illustrating an example of a per-unit output curve, such as... Figure 3 As shown, the horizontal axis represents time in seconds, and the vertical axis represents power.

[0039] In step 22, the predicted hydrogen production equipment is determined in chronological order from morning to evening. N -1 target overall operating power at different times.

[0040] It is worth noting that the change in power generation of the power generation equipment at two different times needs to be taken into account to determine whether the operating load distribution of the hydrogen production equipment should be increased or decreased. Therefore, the time for determining the target overall operating power of the hydrogen production equipment should be one time later than that of the power generation equipment.

[0041] Among them, hydrogen production equipment is in the first i The target overall operating power at any given time is based on the power generation equipment at the [time]. i Power generation at time +1 and at the time i The power generation at any given time is determined, 1≤ i ≤ N -1. Figure 4 This is an exemplary embodiment illustrating a hydrogen production device in the first... i A schematic diagram of the target overall operating power at any given time.

[0042] For example, if P i+1 = P i Then the hydrogen production equipment will be placed in the first... i The target overall operating power at time -1 is used as the... i The overall target operating power at any given time. P i+1 For the power generation equipment in the first i Power generation at time +1 P i For the power generation equipment in the first i Power generation at any given moment. For example... Figure 4 As shown, if P i+1 =P i This indicates that the power generation of the generator remains unchanged between the two moments before and after the event. Therefore, the power output of the hydrogen production system does not need to change, and the load on the hydrogen production system remains constant. P HYDi = P HYDi-1 , P HYDi Indicates that the hydrogen production equipment is in the first stage i The target overall operating power at any given time P HYDi-1 Indicates that the hydrogen production equipment is in the first stage i The target overall operating power at time -1, since it is determined in order from early to late, is therefore... i time P HYDi-1 It is known.

[0043] For example, if P i+1 > P i Then, according to the hydrogen production equipment in the first... i The target overall operating power at time -1 determines the hydrogen production unit's operating power at the [time value missing]. i The first overall operating power at any given time is greater than the first overall operating power. P i In the case of, P i As a hydrogen production device in i The target overall operating power at any given time, when the first overall operating power is less than or equal to P i In the case of the first overall operating power being used as the hydrogen production equipment in the first stage... i The overall operating power of the target at any given time.

[0044] like Figure 4 As shown, if P i+1 > P i This indicates that as the power generation capacity of the power generation equipment increases, the load on the hydrogen production equipment needs to be increased accordingly. The initial overall operating power can be calculated first. P HYDi ´, P HYDi The hydrogen production equipment is larger than the first one. i The overall operating power of the target at time -1 P HYDi-1 .if P HYDi > P i , indicating the calculated PHYDi ´Compared to the power generation equipment in the first i Power generation at any time P i It needs to be bigger, because P HYDi No need to compare P i Large, therefore in this case P HYDi = P i .if P HYDi ´≤ P i ,but P HYDi = P HYDi ´.

[0045] For example, the first overall operating power can be determined by the following formula (1). P HYDi ´: (1) in, R alk This represents the dynamic ramp rate of the ALK electrolyzer. R alk It is the product of the capacity of the first ALK electrolytic cell and the first preset percentage. R pem This indicates the dynamic ramp rate of the PEM electrolyzer. R pem It is the product of the capacity of the first PEM electrolyzer and the second preset percentage. t This indicates the sampling period for the power generation equipment. Both the first preset percentage and the second preset percentage are less than 100%. For example, the first preset percentage is 1%, and the second preset percentage is 50%.

[0046] For example, if P i+1 < P i Then, according to the hydrogen production equipment in the first... i The target overall operating power at time -1 determines the hydrogen production unit's operating power at the [time value missing]. i The second overall operating power at time is less than P i In the case of, P i As a hydrogen production device in i The target overall operating power at a given time is greater than or equal to the second overall operating power. P i In this case, the second overall operating power will be used as the hydrogen production unit in the first stage.i The overall operating power of the target at any given time.

[0047] like Figure 4 As shown, if P i+1 < P i This indicates that the power generation capacity of the power generation equipment has decreased, so the load on the hydrogen production equipment needs to be reduced accordingly. The second overall operating power can be calculated first. P HYDi ´´, P HYDi Smaller than hydrogen production equipment in the first i The overall operating power of the target at time -1 P HYDi-1 .if P HYDi ´´< P i , indicating the calculated P HYDi ´´Compared to the power generation equipment in the first i Power generation at any time P i Even lower, because P HYDi If compared P i Small amounts can lead to a decrease in hydrogen production efficiency, therefore in this case P HYDi = P i .if P HYDi ´≥ P i ,but P HYDi = P HYDi ´´.

[0048] For example, the second overall operating power is determined by the following formula (2). P HYDi ´´: (2) In step 23, the predicted hydrogen production equipment is determined respectively. N -1 Electrolyzer operating load distribution information at different times. Among them, the hydrogen production equipment in the first... i The electrolyzer operating load distribution information at any given time is based on the operating load of the ALK electrolyzer, the operating load of the PEM electrolyzer, and the operating load of the hydrogen production equipment at the specified time. i The overall operating power of the target at any given time is determined.

[0049] The electrolyzer operating load allocation information may include the electrolyzers that need to be started and the operating load allocated to the started electrolyzers. Operating load allocation ensures that the sum of the operating loads of the started electrolyzers reaches the required level for the hydrogen production unit. i The overall operating power of the target at any given time.

[0050] In this disclosure, the safe operating range of the ALK electrolyzer and the safe operating range of the PEM electrolyzer can be preset. The safe operating range refers to the range between the minimum operating load and the maximum operating load of the electrolyzer. P Prate The capacity of the first PEM electrolyzer, P Pmin This indicates the minimum operating load of the PEM electrolyzer. P Pmin The value is the product of the capacity of the first PEM electrolytic cell and the third preset percentage (e.g., 5%). P Pmax This indicates the maximum operating load of the PEM electrolyzer. P Pmax The value is the product of the capacity of the first PEM electrolyzer and the fourth preset percentage (such as 150%). P Arate The capacity of the first ALK electrolytic cell, P Amin This indicates the minimum operating load of the ALK electrolyzer. P Amin The value is the product of the capacity of the first ALK electrolytic cell and the fifth preset percentage (20%). P Amax This indicates the maximum operating load of the ALK electrolyzer. P Amax The value is the product of the first ALK electrolytic cell capacity and the sixth preset percentage (150%). The third and fifth preset percentages are both less than 100%, and the fourth and sixth preset percentages are both greater than 100%. The above percentage values ​​are only examples.

[0051] like P HYDi < P Pmin Then in the first i The electrolytic cell does not need to be started at any time. The power consumption of the PEM electrolytic cell is much lower than that of the ALK electrolytic cell. P HYDi < P Pmin This indicates that the minimum starting power of the PEM electrolyzer has not been reached, and no electrolyzer can be started.

[0052] like P Pmin ≤P HYDi ≤ P Amin Then in the first i A PEM electrolyzer is started at all times, and the operating load of each PEM electrolyzer is based on... P Pmin Definitely. In this case, A is... P HYDi and P Pmin The ratio is rounded down; for example, if the ratio is 2.3, then A represents 2 units, and the operating load of each PEM electrolyzer started is... P 1 is: The operating load distribution principle is as follows: first, start the PEM electrolyzers in sequence... P Pmin If there is still insufficient power remaining to start a single PEM electrolyzer, the remaining power is evenly distributed among the PEM electrolyzers that are being started. Sequential starting can be done according to the module sequence, for example, starting the electrolyzers in module 1 first, then starting the electrolyzers in module 2.

[0053] like Then in the first i All PEM electrolyzers and B ALK electrolyzers are started at all times, and the operating load of each started PEM electrolyzer is based on... P Pmin It is confirmed that each ALK electrolyzer started will be operated according to... P Amin run. m This indicates the number of ALK electrolyzers in the hydrogen production equipment. n This indicates the number of PEM electrolyzers in the hydrogen production equipment. In this case, P HYDi and n×P Pmin Difference divided by P Amin Then, round down to get B. The operating load P2 for each PEM electrolyzer started is: The operating load distribution principle is to start all PEM electrolyzers to... P Pmin Run, and then start the ALK electrolyzer in sequence to... P Amin If there is still insufficient power remaining to start an ALK electrolyzer, the remaining power is evenly distributed to the PEM electrolyzers that are being started.

[0054] like Then in the first iAll PEM electrolyzers and C ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is determined according to... P Pmin It is confirmed that each ALK electrolyzer started will be operated according to... P Arate Run. In this case, P HYDi and n×P Pmin Difference divided by P Arate Then, round down to get C. The operating load P3 for each PEM electrolyzer started is: The operating load distribution principle is to start all PEM electrolyzers to... P Pmin Run, and then start the ALK electrolyzer in sequence to... P Arate If there is still insufficient power remaining to start an ALK electrolyzer, the remaining power is evenly distributed to the PEM electrolyzers that are being started.

[0055] like Then in the first i All PEM electrolyzers and D ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is determined according to... P Prate It is confirmed that each ALK electrolyzer started will be operated according to... P Amax Run. In this case, P HYDi and n×P Prate Difference divided by P Amax Then, round down to get D. The operating load P4 for each PEM electrolyzer started is: The operating load distribution principle is to start all PEM electrolyzers to... P Prate Run, and then start the ALK electrolyzer in sequence to... P Amax If there is still insufficient power remaining to start an ALK electrolyzer, the remaining power is evenly distributed to the PEM electrolyzers that are being started.

[0056] like Then in the first i All PEM electrolyzers and all ALK electrolyzers are started at all times, and each PEM electrolyzer started is in accordance with the following procedures: P Pmax Each ALK electrolyzer is started according to the following procedures: P Amax run.

[0057] Where 1≤A≤n, 0≤B≤m, 0≤C≤m, 0≤D≤m.

[0058] In step 24, based on the per-unit output curve and the hydrogen production equipment, respectively... N -1 Electrolyzer operating load distribution information at different times to determine the tracking error.

[0059] For example, the tracking error is determined by the following formula:

[0060] in, MAPE Indicates tracking error. P i For the power generation equipment in the first i Power generation at any given moment P alk,i Indicates the first i The sum of the operating loads of the ALK electrolyzers that are constantly running. P pem,i Indicates the first i The sum of the operating loads of the PEM electrolyzers that are constantly running.

[0061] After determining the tracking error, if the tracking error is less than a preset value, the hydrogen production cost and energy storage configuration capacity can be determined. Determining the hydrogen production cost and energy storage configuration capacity corresponding to the first set of capacity parameters includes: Based on the first installed capacity and hydrogen production equipment respectively N -1 target overall operating power at different times to determine the energy storage configuration capacity; Based on the hydrogen production efficiency of ALK electrolyzer, PEM electrolyzer, and hydrogen production equipment, respectively... N -1 Electrolyzer operating load distribution information at different times to determine the predicted hydrogen production; The cost of hydrogen production is determined based on the amount of hydrogen produced, the operating hours of the hydrogen production equipment, and the electrolyzer decay factor.

[0062] Among them, the first installed capacity and hydrogen production equipment can be respectively in N -1 target overall operating power at different times, determine the energy storage capacity at different times, where, the first i The energy storage capacity at a given time is the first installed capacity and the hydrogen production equipment at the second time. i The difference in the overall operating power of the target at any given time. Figure 5This is an exemplary schematic diagram of energy storage capacity distribution. The horizontal axis represents time, in hours (seconds can also be used as the time range), and the vertical axis represents energy storage capacity, in kW. The maximum energy storage capacity can be used as the configured energy storage capacity. The method for determining hydrogen production can refer to relevant technologies. The hydrogen production cost in this disclosure can be the Levelized Cost of Hydrogen (LCOH), which can be determined by the following formula:

[0063] in, H t Indicates hydrogen production capacity. r The discount rate is represented by PV_life, which represents the operating hours of the hydrogen production equipment, i.e., the equipment lifespan. I 0 represents the equipment cost of the hydrogen production equipment in year 0. I t Indicates that the hydrogen production equipment is in the first stage t Annual equipment costs t Let θ be a positive integer, representing the electrolytic cell attenuation factor. M t Indicates that the hydrogen production equipment is in the first stage t Other routine costs for the year.

[0064] Thus, considering the impact of the electrolyzer's degradation factor on capacity parameter configuration, different degradation modes correspond to different degradation factors. Degradation modes can be categorized into full-load operation degradation, minimum load operation degradation, and overload operation degradation. The operating hours of the hydrogen production equipment can be the electrolyzer's total lifespan converted to full-load operation hours, minimum load operation hours, and overload operation hours. The full-load operation hours degradation mode refers to the system reaching the theoretical equivalent full-load operation hours, at which point hydrogen production efficiency rapidly declines, rendering normal operation impossible. The minimum load operation hours degradation mode refers to the system reaching the minimum operating load hours within the minimum safe operating time, at which point hydrogen production efficiency rapidly declines, rendering normal operation impossible. The overload operation hours degradation mode refers to the system reaching the over-operating load hours within the over-safe operating time, at which point hydrogen production efficiency rapidly declines, rendering normal operation impossible. Considering the off-grid mode, frequent load changes in the electrolyzer accelerate stack degradation, making the determination of hydrogen production costs more accurate.

[0065] In one embodiment, for example, the second capacity parameter set obtained has a second ALK electrolyzer capacity of 4MW, a second PEM electrolyzer capacity of 1MW, a second installed capacity of 56.4MW, and an energy storage configuration capacity of 4.4MW.

[0066] Based on the above technical solutions, and comprehensively considering the system lifespan, reliability, energy efficiency, safety, and off-grid tracking performance of hydrogen production equipment, the electrolyzer capacity allocation scheme and energy storage configuration capacity with the lowest total lifespan hydrogen production cost are obtained. Here, system lifespan refers to the number of usable hours of the electrolyzer; reliability refers to the hydrogen production system operating under fault-free conditions; energy efficiency refers to the change in the target overall hydrogen production power per unit output; safety refers to the system's safe operating load range constraints; off-grid tracking performance refers to the deviation between the actual operating load of the hydrogen production system and the output of the renewable energy system at the same moment; and operating economy refers to the total lifespan hydrogen production cost of the system. The set of capacity parameters corresponding to the lowest hydrogen production cost is used as the second set of capacity parameters. If the tracking error corresponding to this second set of capacity parameters is less than the preset value and the hydrogen production cost is the lowest, then the capacity parameter configuration in this second set of capacity parameters is optimal for the off-grid hydrogen production system. Therefore, the rated capacity of the PEM electrolyzer and the rated capacity of the ALK electrolyzer can be configured separately, and the target energy storage configuration capacity of the hydrogen production equipment and the rated installed capacity of the power generation equipment can be determined simultaneously. The off-grid hydrogen production system configured according to the second set of capacity parameters can enable the off-grid hydrogen production system to meet the requirements of efficient, economical, safe operation and high proportion of new energy output.

[0067] Based on the same inventive concept, this disclosure also provides a capacity configuration device for an off-grid hydrogen production system. Figure 6 This is a block diagram illustrating an off-grid hydrogen production system capacity configuration device according to an exemplary embodiment, such as... Figure 6 As shown, the device 60 may include: The acquisition module 61 is used to acquire multiple sets of capacity parameters, wherein each set of capacity parameters includes a preset ALK electrolyzer capacity, a PEM electrolyzer capacity, and the installed capacity of the power generation equipment; Processing module 62 is used to traverse the multiple capacity parameter sets, and take the currently traversed capacity parameter set as the first capacity parameter set. Based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first capacity parameter set, it determines the tracking error of the hydrogen production equipment corresponding to the first capacity parameter set. If the tracking error is less than a preset value, it determines the hydrogen production cost and energy storage configuration capacity corresponding to the first capacity parameter set. The tracking error represents the deviation between the operating power of the hydrogen production equipment and the power generation power of the power generation equipment. The first determining module 63 is used to use the set of capacity parameters corresponding to the lowest hydrogen production cost as the second set of capacity parameters. The second determining module 64 is used to take the second ALK electrolyzer capacity, the second PEM electrolyzer capacity and the second installed capacity in the second capacity parameter set as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer and the rated installed capacity of the power generation equipment, respectively, and take the energy storage configuration capacity corresponding to the second capacity parameter set as the target energy storage configuration capacity of the hydrogen production equipment.

[0068] Optionally, the processing module 62 includes: The acquisition submodule is used to acquire the per-unit output curve of the power generation equipment at the first installed capacity, wherein the per-unit output curve is used to characterize the power generation equipment at... N The power generation at different times. N It is a positive integer; The first determining submodule is used to determine the predicted hydrogen production equipment in order of time from morning to evening. N -1 target overall operating power at different times, wherein the hydrogen production equipment is in the first... i The target overall operating power at time is based on the power generation equipment at the . i The power generation at time +1 and at the time... i The power generation at time 1 is determined, 1≤ i ≤ N -1; The second determining submodule is used to determine, respectively, the predicted hydrogen production equipment in N -1 Electrolyzer operating load allocation information at different times, wherein the hydrogen production equipment in the first... i The electrolyzer operating load allocation information at any given time is based on the operating load of the ALK electrolyzer, the operating load of the PEM electrolyzer, and the operating load of the hydrogen production equipment at the specified time. i The overall operating power of the target at any given time is determined; The third determining submodule is used to determine the output per-unit value curve and the hydrogen production equipment respectively... N -1 The tracking error is determined by the operating load distribution information of the electrolytic cell at different times.

[0069] Optionally, the hydrogen production equipment is in the first i The target overall operating power at a given time is determined by the first determining submodule in the following manner: like P i+1 = P i Then the hydrogen production equipment will be placed in the first... i The overall operating power of the target at time -1 is taken as the first... i The overall operating power of the target at any given time; like P i+1 > P i Then, according to the hydrogen production equipment in the first... i The target overall operating power at time -1 is used to determine the hydrogen production equipment at the [time value missing]. i The first overall operating power at a given time, when the first overall operating power is greater than P i In the case of, P i As the hydrogen production equipment in the first i The target overall operating power at time , when the first overall operating power is less than or equal to P i In the case of the first overall operating power, the hydrogen production equipment is used as the first overall operating power in the first stage. i The overall operating power of the target at any given time; like P i+1 < P i Then, according to the hydrogen production equipment in the first... i The target overall operating power at time -1 is used to determine the hydrogen production equipment at the [time value missing]. i The second overall operating power at a given time, when the second overall operating power is less than P i In the case of, P i As the hydrogen production equipment in the first i The target overall operating power at time t, when the second overall operating power is greater than or equal to P i In the case of the second overall operating power, the hydrogen production equipment is used as the second overall operating power in the first stage. i The overall operating power of the target at any given time; in, P i+1 For the power generation equipment in the first i The power generation at time +1 P i For the power generation equipment in the first i The power generation at that time.

[0070] Optionally, the first determining submodule is used to determine the first overall operating power using the following formula:

[0071] The second overall operating power is determined by the following formula:

[0072] in, P HYDi ´ represents the first overall operating power. P HYDi ´´ represents the second overall operating power. P HYDi-1 For the hydrogen production equipment in the first i The overall operating power of the target at time -1 R alk This represents the dynamic ramp rate of the ALK electrolytic cell. R alk It is the product of the capacity of the first ALK electrolytic cell and the first preset percentage. R pem This indicates the dynamic ramp rate of the PEM electrolyzer. R pem It is the product of the capacity of the first PEM electrolytic cell and the second preset percentage. t This indicates the sampling period of the power generation equipment.

[0073] Optionally, the hydrogen production equipment is in the first i The electrolytic cell operating load allocation information at any given time is determined by the second determining submodule in the following manner: like P HYDi < P Pmin Then in the first i There is no need to start the electrolytic cell at any time; like P Pmin ≤ P HYDi ≤ P Amin Then in the first i The PEM electrolyzer A is started at any time, and the operating load of each PEM electrolyzer started is based on... P Pmin Certain; like Then in the first i All PEM electrolyzers and B ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is based on... P Pmin It is determined that each of the aforementioned ALK electrolyzers is started according to... P Amin run; like Then in the first i All PEM electrolyzers and C ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is based on... PPmin It is determined that each of the aforementioned ALK electrolyzers is started according to... P Arate run; like Then in the first i All PEM electrolyzers and D ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is based on... P Prate It is determined that each of the aforementioned ALK electrolyzers is started according to... P Amax run; like Then in the first i All PEM electrolyzers and all ALK electrolyzers are started at all times, and each PEM electrolyzer is started in accordance with the following procedures: P Pmax Each of the ALK electrolyzers is started and operated according to... P Amax run; in, P HYDi This indicates that the hydrogen production equipment is in the first... i The overall operating power of the target at that moment. P Pmin This indicates the minimum operating load of the PEM electrolyzer. P Amin This indicates the minimum operating load of the ALK electrolyzer. P Arate The capacity of the first ALK electrolytic cell is... P Prate The capacity of the first PEM electrolytic cell is... P Amax This indicates the maximum operating load of the ALK electrolyzer. P Pmax This indicates the maximum operating load of the PEM electrolyzer. m This indicates the number of ALK electrolyzers in the hydrogen production equipment. n The number of PEM electrolyzers in the hydrogen production equipment is 1≤A≤n, 0≤B≤m, 0≤C≤m, 0≤D≤m.

[0074] Optionally, P Pmin The value is the product of the capacity of the first PEM electrolytic cell and the third preset percentage. P Pmax The value is the product of the capacity of the first PEM electrolytic cell and the fourth preset percentage. P AminThe value is the product of the capacity of the first ALK electrolytic cell and the fifth preset percentage. P Amax The value is the product of the capacity of the first ALK electrolytic cell and the sixth preset percentage, wherein the third preset percentage and the fifth preset percentage are both less than 100%, and the fourth preset percentage and the sixth preset percentage are both greater than 100%.

[0075] Optionally, the third determining submodule is used for: The tracking error is determined by the following formula:

[0076] in, MAPE Indicates tracking error. P i For the power generation equipment in the first i The power generation at that time, P alk,i Indicates the first i The sum of the operating loads of the ALK electrolyzers that are constantly started. P pem,i Indicates the first i The sum of the operating loads of the PEM electrolyzers that are started at all times.

[0077] Optionally, the processing module 62 includes: The fourth determining submodule is used to determine the hydrogen production equipment based on the first installed capacity and the hydrogen production equipment respectively. N -1 different times of the target overall operating power to determine the energy storage configuration capacity; The fifth determining submodule is used to determine the hydrogen production efficiency of the ALK electrolyzer, the hydrogen production efficiency of the PEM electrolyzer, and the hydrogen production equipment respectively in... N -1 The electrolyzer operating load allocation information at different times is used to determine the predicted hydrogen production; The sixth determining submodule is used to determine the hydrogen production cost based on the hydrogen production volume, the operating hours of the hydrogen production equipment, and the electrolyzer attenuation factor.

[0078] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0079] Figure 7 This is a block diagram illustrating an electronic device 700 according to an exemplary embodiment. Figure 7As shown, the electronic device 700 may include a processor 701 and a memory 702. The electronic device 700 may also include one or more of a multimedia component 703, an input / output (I / O) interface 704, and a communication component 705.

[0080] The processor 701 controls the overall operation of the electronic device 700 to complete all or part of the steps in the off-grid hydrogen production system capacity configuration method described above. The memory 702 stores various types of data to support the operation of the electronic device 700. This data may include, for example, instructions for any application or method operating on the electronic device 700, and application-related data such as contact data, sent and received messages, pictures, audio, video, etc. The memory 702 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. Multimedia component 703 may include a screen and an audio component. The screen may be, for example, a touchscreen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may be further stored in memory 702 or transmitted via communication component 705. The audio component also includes at least one speaker for outputting audio signals. I / O interface 704 provides an interface between processor 701 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual or physical buttons. Communication component 705 is used for wired or wireless communication between the electronic device 700 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IoT, eMTC, or other 5G technologies, or combinations thereof, is not limited here. Therefore, the corresponding communication component 705 may include: a Wi-Fi module, a Bluetooth module, an NFC module, etc.

[0081] In an exemplary embodiment, the electronic device 700 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described off-grid hydrogen production system capacity configuration method.

[0082] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, which, when executed by a processor, implement the steps of the off-grid hydrogen production system capacity configuration method described above. For example, the computer-readable storage medium may be the memory 702 including program instructions described above, which may be executed by the processor 701 of the electronic device 700 to complete the off-grid hydrogen production system capacity configuration method described above.

[0083] Figure 8 This is a block diagram illustrating an electronic device 1900 according to an exemplary embodiment. For example, the electronic device 1900 may be provided as a server. (Refer to...) Figure 8 The electronic device 1900 includes a processor 1922, which may be one or more, and a memory 1932 for storing computer programs executable by the processor 1922. The computer program stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processor 1922 may be configured to execute the computer program to perform the off-grid hydrogen production system capacity configuration method described above.

[0084] Additionally, the electronic device 1900 may also include a power supply component 1926 and a communication component 1950. The power supply component 1926 can be configured to perform power management of the electronic device 1900, and the communication component 1950 can be configured to enable communication of the electronic device 1900, such as wired or wireless communication. Furthermore, the electronic device 1900 may also include an input / output (I / O) interface 1958. The electronic device 1900 can operate on an operating system stored in memory 1932.

[0085] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, which, when executed by a processor, implement the steps of the off-grid hydrogen production system capacity configuration method described above. For example, the non-transitory computer-readable storage medium may be the memory 1932 including program instructions described above, which may be executed by the processor 1922 of the electronic device 1900 to complete the off-grid hydrogen production system capacity configuration method described above.

[0086] In another exemplary embodiment, a computer program product is also provided, comprising a computer program executable by a programmable device, the computer program having a code portion for performing the above-described off-grid hydrogen production system capacity configuration method when executed by the programmable device.

[0087] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0088] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0089] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A method for configuring the capacity of an off-grid hydrogen production system, characterized in that, The off-grid hydrogen production system includes power generation equipment and hydrogen production equipment. The hydrogen production equipment is used to convert the electrical energy generated by the power generation equipment using new energy sources into hydrogen energy. The hydrogen production equipment includes multiple ALK electrolyzers and multiple PEM electrolyzers. The method includes: Multiple sets of capacity parameters are obtained, wherein each set of capacity parameters includes a preset ALK electrolyzer capacity, a PEM electrolyzer capacity, and the installed capacity of the power generation equipment; The system iterates through the multiple sets of capacity parameters and takes the currently iterated set of capacity parameters as the first set of capacity parameters. Based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first set of capacity parameters, the system determines the tracking error of the hydrogen production equipment corresponding to the first set of capacity parameters. If the tracking error is less than a preset value, the system determines the hydrogen production cost and energy storage configuration capacity corresponding to the first set of capacity parameters. The tracking error represents the deviation between the operating power of the hydrogen production equipment and the power generation power of the power generation equipment. The set of capacity parameters corresponding to the lowest hydrogen production cost is used as the second set of capacity parameters. The second ALK electrolyzer capacity, the second PEM electrolyzer capacity, and the second installed capacity in the second set of capacity parameters are respectively taken as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer, and the rated installed capacity of the power generation equipment, and the energy storage configuration capacity corresponding to the second set of capacity parameters is taken as the target energy storage configuration capacity of the hydrogen production equipment.

2. The method according to claim 1, characterized in that, The step of determining the tracking error of the hydrogen production equipment corresponding to the first capacity parameter set based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first capacity parameter set includes: Obtain the per-unit output curve of the power generation equipment at the first installed capacity, and the per-unit output curve is used to characterize the power generation equipment at... N The power generation at different times. N It is a positive integer; The predicted hydrogen production equipment is determined according to the order of time from morning to night. N -1 target overall operating power at different times, wherein the hydrogen production equipment is in the first... i The target overall operating power at time is based on the power generation equipment at the . i The power generation at time +1 and at the time... i The power generation at time 1 is determined, 1≤ i ≤ N -1; The predicted hydrogen production equipment was determined separately. N -1 Electrolyzer operating load allocation information at different times, wherein the hydrogen production equipment in the first... i The electrolyzer operating load allocation information at any given time is based on the operating load of the ALK electrolyzer, the operating load of the PEM electrolyzer, and the operating load of the hydrogen production equipment at the specified time. i The overall operating power of the target at any given time is determined; Based on the per-unit output curve and the hydrogen production equipment, respectively... N -1 The tracking error is determined by the operating load distribution information of the electrolytic cell at different times.

3. The method according to claim 2, characterized in that, The hydrogen production equipment is in the i The target overall operating power at time t is determined as follows: like P i+1 = P i Then the hydrogen production equipment will be placed in the first... i The overall operating power of the target at time -1 is taken as the first... i The overall operating power of the target at any given time; like P i+1 > P i Then, according to the hydrogen production equipment in the first... i The target overall operating power at time -1 is used to determine the hydrogen production equipment at the [time value missing]. i The first overall operating power at a given time, when the first overall operating power is greater than P i In the case of, P i As the hydrogen production equipment in the first i The target overall operating power at time , when the first overall operating power is less than or equal to P i In the case of the first overall operating power, the hydrogen production equipment is used as the first overall operating power in the first stage. i The overall operating power of the target at any given time; like P i+1 < P i Then, according to the hydrogen production equipment in the first... i The target overall operating power at time -1 is used to determine the hydrogen production equipment at the [time value missing]. i The second overall operating power at a given time, when the second overall operating power is less than P i In the case of, P i As the hydrogen production equipment in the first i The target overall operating power at time t, when the second overall operating power is greater than or equal to P i In the case of the second overall operating power, the hydrogen production equipment is used as the first... i The overall operating power of the target at any given time; in, P i+1 For the power generation equipment in the first i The power generation at time +1 P i For the power generation equipment in the first i The power generation at that time.

4. The method according to claim 3, characterized in that, The first overall operating power is determined by the following formula: The second overall operating power is determined by the following formula: in, P HYDi ´ represents the first overall operating power. P HYDi ´´ represents the second overall operating power. P HYDi-1 For the hydrogen production equipment in the first i The overall operating power of the target at time -1 R alk This represents the dynamic ramp rate of the ALK electrolytic cell. R alk It is the product of the capacity of the first ALK electrolytic cell and the first preset percentage. R pem This indicates the dynamic ramp rate of the PEM electrolyzer. R pem It is the product of the capacity of the first PEM electrolytic cell and the second preset percentage. t This indicates the sampling period of the power generation equipment.

5. The method according to claim 2, characterized in that, The hydrogen production equipment is in the i The electrolyzer operating load distribution information at any given time is determined in the following manner: like P HYDi < P Pmin Then in the first i There is no need to start the electrolytic cell at any time; like P Pmin ≤ P HYDi ≤ P Amin Then in the first i The PEM electrolyzer A is started at any time, and the operating load of each PEM electrolyzer started is based on... P Pmin Certain; like Then in the first i All PEM electrolyzers and B ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is based on... P Pmin It is determined that each of the aforementioned ALK electrolyzers is started according to... P Amin run; like Then in the first i All PEM electrolyzers and C ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is based on... P Pmin It is determined that each of the aforementioned ALK electrolyzers is started according to... P Arate run; like Then in the first i All PEM electrolyzers and D ALK electrolyzers are started at all times, and the operating load of each PEM electrolyzer is based on... P Prate It is determined that each of the aforementioned ALK electrolyzers is started according to... P Amax run; like Then in the first i All PEM electrolyzers and all ALK electrolyzers are started at all times, and each PEM electrolyzer is started in accordance with the following procedures: P Pmax Each of the ALK electrolyzers is started and operated according to... P Amax run; in, P HYDi This indicates that the hydrogen production equipment is in the first... i The overall operating power of the target at that moment. P Pmin This indicates the minimum operating load of the PEM electrolyzer. P Amin This indicates the minimum operating load of the ALK electrolyzer. P Arate The capacity of the first ALK electrolytic cell is... P Prate The capacity of the first PEM electrolytic cell is... P Amax This indicates the maximum operating load of the ALK electrolyzer. P Pmax This indicates the maximum operating load of the PEM electrolyzer. m This indicates the number of ALK electrolyzers in the hydrogen production equipment. n The number of PEM electrolyzers in the hydrogen production equipment is 1≤A≤n, 0≤B≤m, 0≤C≤m, 0≤D≤m.

6. The method according to claim 5, characterized in that, P Pmin The value is the product of the capacity of the first PEM electrolytic cell and the third preset percentage. P Pmax The value is the product of the capacity of the first PEM electrolytic cell and the fourth preset percentage. P Amin The value is the product of the capacity of the first ALK electrolytic cell and the fifth preset percentage. P Amax The value is the product of the capacity of the first ALK electrolytic cell and the sixth preset percentage, wherein the third preset percentage and the fifth preset percentage are both less than 100%, and the fourth preset percentage and the sixth preset percentage are both greater than 100%.

7. The method according to claim 2, characterized in that, The method is based on the per-unit output curve and the hydrogen production equipment respectively in N -1 different time periods of the electrolytic cell operating load distribution information, to determine the tracking error, including: The tracking error is determined by the following formula: in, MAPE Indicates tracking error. P i For the power generation equipment in the first i The power generation at that time, P alk,i Indicates the first i The sum of the operating loads of the ALK electrolyzers that are constantly started. P pem,i Indicates the first i The sum of the operating loads of the PEM electrolyzers that are started at all times.

8. The method according to claim 2, characterized in that, Determining the hydrogen production cost and energy storage configuration capacity corresponding to the first set of capacity parameters includes: Based on the first installed capacity and the hydrogen production equipment respectively N -1 different times of the target overall operating power to determine the energy storage configuration capacity; Based on the hydrogen production efficiency of the ALK electrolyzer, the hydrogen production efficiency of the PEM electrolyzer, and the hydrogen production equipment respectively... N -1 The electrolyzer operating load allocation information at different times is used to determine the predicted hydrogen production; The hydrogen production cost is determined based on the hydrogen production capacity, the operating hours of the hydrogen production equipment, and the electrolyzer attenuation factor.

9. A capacity configuration device for an off-grid hydrogen production system, characterized in that, The off-grid hydrogen production system includes power generation equipment and hydrogen production equipment. The hydrogen production equipment is used to convert the electrical energy generated by the power generation equipment using new energy sources into hydrogen energy. The hydrogen production equipment includes multiple ALK electrolyzers and multiple PEM electrolyzers. The device includes: The acquisition module is used to acquire multiple sets of capacity parameters, wherein each set of capacity parameters includes a preset ALK electrolyzer capacity, a PEM electrolyzer capacity, and the installed capacity of the power generation equipment; The processing module is used to traverse the multiple sets of capacity parameters, and take the currently traversed set of capacity parameters as the first set of capacity parameters. Based on the first ALK electrolyzer capacity, the first PEM electrolyzer capacity, and the first installed capacity in the first set of capacity parameters, the module determines the tracking error of the hydrogen production equipment corresponding to the first set of capacity parameters. If the tracking error is less than a preset value, the module determines the hydrogen production cost and energy storage configuration capacity corresponding to the first set of capacity parameters. The tracking error represents the deviation between the operating power of the hydrogen production equipment and the power generation power of the power generation equipment. The first determining module is used to take the set of capacity parameters corresponding to the lowest hydrogen production cost as the second set of capacity parameters. The second determining module is used to take the second ALK electrolyzer capacity, the second PEM electrolyzer capacity, and the second installed capacity in the second capacity parameter set as the rated capacity of the ALK electrolyzer, the rated capacity of the PEM electrolyzer, and the rated installed capacity of the power generation equipment, respectively, and to take the energy storage configuration capacity corresponding to the second capacity parameter set as the target energy storage configuration capacity of the hydrogen production equipment.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the method according to any one of claims 1-8.

11. An electronic device, characterized in that, include: A memory on which computer programs are stored; A processor for executing the computer program in the memory to implement the steps of the method according to any one of claims 1-8.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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