Control method and equipment of water electrolysis hydrogen production system, storage medium and program product

Abstract

The embodiment of the invention provides a control method and equipment of a water electrolysis hydrogen production system, a storage medium and a program product. The method comprises the following steps: acquiring the current wind-solar power generation power and the predicted wind-solar power generation power, and controlling the running state of each electrolytic cell group in the water electrolysis hydrogen production system according to the current wind-solar power generation power and the predicted wind-solar power generation power; wherein the predicted wind-solar power generation power is the predicted output power of the wind-solar power generation system after the preset time period; the preset time period is a preset time range after the current moment; acquiring real-time wind-solar power generation power within a preset time period, and performing load adjustment treatment on the electrolytic cell groups in each starting state in the water electrolysis hydrogen production system according to the real-time wind-solar power generation power; wherein the real-time wind-solar power generation power is the output power, obtained in real time, of the wind-solar power generation system. The method is used for achieving the effect of improving the utilization rate and safety of new energy.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a control method, equipment, storage medium and program product for an electrolytic water hydrogen production system. Background Technology

[0002] With the widespread adoption of wind and solar power technologies, the number of wind and solar power generation devices is increasing, leading to a rise in wind and solar curtailment. In this context, combining wind and solar power systems with water electrolysis hydrogen production systems can effectively reduce the curtailment rate.

[0003] In existing technologies, excess electrical energy from wind and solar power systems can be converted into hydrogen energy for storage in real time through water electrolysis. However, due to the intermittent and fluctuating nature of wind and solar power systems, the water electrolysis hydrogen production system suffers from poor operational stability, resulting in problems such as low utilization rate of new energy sources and poor safety.

[0004] Therefore, there is an urgent need for a control method for water electrolysis hydrogen production systems to improve the utilization rate and safety of new energy sources. Summary of the Invention

[0005] This application provides a control method, equipment, storage medium, and program product for an electrolytic water hydrogen production system, which aims to improve the utilization rate and safety of new energy sources.

[0006] In a first aspect, embodiments of this application provide a control method for a water electrolysis hydrogen production system, including:

[0007] The system obtains the current and predicted wind and solar power generation capacity, and controls the operating status of each group of electrolyzers in the water electrolysis hydrogen production system based on the current and predicted wind and solar power generation capacity; wherein, the predicted wind and solar power generation capacity is the output power of the wind and solar power generation system after a predicted preset time period; the preset time period is a preset time range after the current moment.

[0008] The real-time wind and solar power generation is acquired within the preset time period, and the load adjustment is performed on each electrolyzer group in the start-up state of the water electrolysis hydrogen production system based on the real-time wind and solar power generation; wherein, the real-time wind and solar power generation is the output power of the wind and solar power generation system acquired in real time.

[0009] In one possible implementation, controlling the operating status of each group of electrolyzers in the water electrolysis hydrogen production system based on the current and predicted wind and solar power generation includes: determining the operating status and number of the electrolyzer groups to be adjusted based on the current and predicted wind and solar power generation; wherein the water electrolysis hydrogen production system includes at least one of the following: a group of electrolyzers in standby mode, a group of electrolyzers in start-up mode, and a group of electrolyzers in shutdown mode; obtaining preset start-up / shutdown priorities and preset electrolyzer state switching constraint logic for the electrolyzer groups; and controlling and adjusting the operating status of the electrolyzer groups to be adjusted based on the preset start-up / shutdown priorities and preset electrolyzer state switching constraint logic.

[0010] In one possible implementation, determining the operating status and number of electrolytic cell groups to be adjusted based on the current wind and solar power generation and the predicted wind and solar power generation includes: if the predicted wind and solar power generation is greater than the current wind and solar power generation, then the electrolytic cell groups to be adjusted include at least one electrolytic cell group in the standby state, and / or at least one electrolytic cell group in the shutdown state; if the predicted wind and solar power generation is equal to the current wind and solar power generation, then the number of electrolytic cell groups to be adjusted is zero; if the predicted wind and solar power generation is less than the current wind and solar power generation, then the electrolytic cell groups to be adjusted include at least one electrolytic cell group in the start-up state.

[0011] In one possible implementation, the electrolyzer group includes at least one of a proton exchange membrane electrolyzer group, an insulated-gate bipolar transistor (IGBT) alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; the preset start / stop priority of the electrolyzer group is that the proton exchange membrane electrolyzer group takes precedence over the IGBT alkaline electrolyzer group, and the IGBT alkaline electrolyzer group takes precedence over the thyristor alkaline electrolyzer group.

[0012] In one possible implementation, load adjustment processing is performed on each electrolyzer group in the water electrolysis hydrogen production system in its start-up state based on the real-time wind and solar power generation, including: obtaining the load adjustment priority and preset load ratio adjustment rules for each electrolyzer group in its start-up state; and performing load adjustment processing on each electrolyzer group in its start-up state based on the real-time wind and solar power generation, the load adjustment priority, and the preset load ratio adjustment rules.

[0013] In one possible implementation, the electrolyzer group in the startup state includes at least one of a proton exchange membrane electrolyzer group, an insulated-gate bipolar transistor (IGBT) alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; the load adjustment priority is that the proton exchange membrane electrolyzer group takes precedence over the IGBT alkaline electrolyzer group, and the IGBT alkaline electrolyzer group takes precedence over the thyristor alkaline electrolyzer group.

[0014] In one possible implementation, the preset load ratio adjustment rule includes a preset load increase ratio adjustment rule and a preset load decrease ratio adjustment rule; wherein, the preset load increase ratio adjustment rule includes at least one load increase adjustment stage; the load increase adjustment stage sequentially includes: adjusting from the minimum load ratio to the optimal load ratio, adjusting from the optimal load ratio to the full load ratio, and adjusting from the full load ratio to the maximum load ratio; wherein, the preset load decrease ratio adjustment rule includes at least one load decrease adjustment stage; the load increase adjustment stage sequentially includes: adjusting from the maximum load ratio to the full load ratio, adjusting from the full load ratio to the optimal load ratio, and adjusting from the optimal load ratio to the minimum load ratio.

[0015] In one possible implementation, after acquiring real-time wind and solar power generation within the preset time period and adjusting the load of each electrolyzer group in the start-up state of the water electrolysis hydrogen production system according to the real-time wind and solar power generation, the method further includes: if it is determined that the load ratio of all the electrolyzer groups in the start-up state has been adjusted to the maximum load ratio or the minimum load ratio, but still cannot meet the demand for real-time wind and solar power generation, then the process of controlling the operating state of each electrolyzer group in the water electrolysis hydrogen production system and adjusting the load of each electrolyzer group in the start-up state is repeated until the demand for real-time wind and solar power generation is met.

[0016] Secondly, embodiments of this application provide a control device for a water electrolysis hydrogen production system, comprising:

[0017] The first control module is used to acquire the current wind and solar power generation power and the predicted wind and solar power generation power, and control the operating status of each group of electrolyzers in the water electrolysis hydrogen production system according to the current wind and solar power generation power and the predicted wind and solar power generation power; wherein, the predicted wind and solar power generation power is the output power of the wind and solar power generation system after a predicted preset time period; the preset time period is a preset time range after the current moment.

[0018] The second control module is used to acquire real-time wind and solar power generation within the preset time period, and to perform load adjustment processing on each electrolyzer group in the start-up state of the water electrolysis hydrogen production system according to the real-time wind and solar power generation; wherein, the real-time wind and solar power generation is the output power of the wind and solar power generation system acquired in real time.

[0019] In one possible implementation, the first control module is specifically configured to determine the operating status and number of the electrolyzer group to be adjusted based on the current wind and solar power generation and the predicted wind and solar power generation; wherein the water electrolysis hydrogen production system includes at least one of the following: a standby electrolyzer group, a startup electrolyzer group, and a shutdown electrolyzer group; acquire a preset start / stop priority of the electrolyzer group and a preset electrolyzer state switching constraint logic; and control and adjust the operating status of the electrolyzer group to be adjusted according to the preset start / stop priority of the electrolyzer group and the preset electrolyzer state switching constraint logic.

[0020] In one possible implementation, the first control module is further specifically configured to: if the predicted wind and solar power generation is greater than the current wind and solar power generation, then the group of electrolyzers to be adjusted includes at least one group of electrolyzers in a standby state, and / or at least one group of electrolyzers in a shutdown state; if the predicted wind and solar power generation is equal to the current wind and solar power generation, then the number of groups of electrolyzers to be adjusted is zero; if the predicted wind and solar power generation is less than the current wind and solar power generation, then the group of electrolyzers to be adjusted includes at least one group of electrolyzers in a startup state.

[0021] In one possible implementation, the electrolyzer group includes at least one of a proton exchange membrane electrolyzer group, an insulated-gate bipolar transistor (IGBT) alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; the preset start / stop priority of the electrolyzer group is that the proton exchange membrane electrolyzer group takes precedence over the IGBT alkaline electrolyzer group, and the IGBT alkaline electrolyzer group takes precedence over the thyristor alkaline electrolyzer group.

[0022] In one possible implementation, the second control module is specifically used to acquire the load adjustment priority and preset load ratio adjustment rules of each electrolytic cell group in the startup state; and to perform load adjustment processing on each electrolytic cell group in the startup state according to the real-time wind and solar power generation, the load adjustment priority and the preset load ratio adjustment rules.

[0023] In one possible implementation, the electrolyzer group in the startup state includes at least one of a proton exchange membrane electrolyzer group, an insulated-gate bipolar transistor (IGBT) alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; the load adjustment priority is that the proton exchange membrane electrolyzer group takes precedence over the IGBT alkaline electrolyzer group, and the IGBT alkaline electrolyzer group takes precedence over the thyristor alkaline electrolyzer group.

[0024] In one possible implementation, the preset load ratio adjustment rule includes a preset load increase ratio adjustment rule and a preset load decrease ratio adjustment rule; wherein, the preset load increase ratio adjustment rule includes at least one load increase adjustment stage; the load increase adjustment stage sequentially includes: adjusting from the minimum load ratio to the optimal load ratio, adjusting from the optimal load ratio to the full load ratio, and adjusting from the full load ratio to the maximum load ratio; wherein, the preset load decrease ratio adjustment rule includes at least one load decrease adjustment stage; the load increase adjustment stage sequentially includes: adjusting from the maximum load ratio to the full load ratio, adjusting from the full load ratio to the optimal load ratio, and adjusting from the optimal load ratio to the minimum load ratio.

[0025] In one possible implementation, the second control module is further configured to, if it is determined that the load ratio of all the electrolyzer groups in the start-up state has been adjusted to the maximum load ratio or the minimum load ratio, but still cannot meet the real-time wind and solar power generation demand, then repeatedly control the operating state of each electrolyzer group in the water electrolysis hydrogen production system and perform load adjustment processing on each of the electrolyzer groups in the start-up state until the real-time wind and solar power generation demand is met.

[0026] Thirdly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0027] The memory stores computer-executed instructions;

[0028] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0029] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0030] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0031] The control method, equipment, storage medium, and program product for the water electrolysis hydrogen production system provided in this application acquire the current and predicted wind and solar power generation capacity, and control the operating status of each group of electrolyzers in the water electrolysis hydrogen production system based on the current and predicted wind and solar power generation capacity. Real-time wind and solar power generation capacity is acquired within a preset time period, and load adjustment is performed on each group of electrolyzers in the start-up state of the water electrolysis hydrogen production system based on the real-time wind and solar power generation capacity. The control of the water electrolysis hydrogen production system is achieved by combining the predicted and real-time wind and solar power generation capacity. This process can improve the stability and accuracy of control, thereby increasing the utilization rate and safety of new energy sources. Specifically, in the process of controlling the water electrolysis hydrogen production system, the operating status of each group of electrolyzers is controlled by predicting the wind and solar power generation. The load adjustment of each group of electrolyzers in the start-up state of the water electrolysis hydrogen production system is performed by adjusting the wind and solar power generation. This can further improve the stability and accuracy of control, thereby increasing the utilization rate and safety of new energy sources. In summary, the control method for the water electrolysis hydrogen production system provided in this application embodiment can improve the utilization rate and safety of new energy sources. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0033] Figure 1 Flowchart of the control method for the water electrolysis hydrogen production system provided in this application Figure 1 ;

[0034] Figure 2 Flowchart of the control method for the water electrolysis hydrogen production system provided in this application Figure 2 ;

[0035] Figure 3 Flowchart of the control method for the water electrolysis hydrogen production system provided in this application Figure 3 ;

[0036] Figure 4 A schematic diagram of the control device for the water electrolysis hydrogen production system provided in this application;

[0037] Figure 5 A schematic diagram of the structure of the electronic device provided in this application.

[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] Existing technologies can convert excess electrical energy from wind and solar power systems into hydrogen energy for storage in real time via water electrolysis. However, due to the intermittent and fluctuating nature of wind and solar power systems, the water electrolysis hydrogen production system suffers from poor operational stability, resulting in low utilization rate and poor safety of the renewable energy source. Therefore, a control method for water electrolysis hydrogen production systems is urgently needed to improve the utilization rate and safety of this renewable energy source.

[0041] The control method for the water electrolysis hydrogen production system provided in this application obtains the current and predicted wind and solar power generation capacity, and controls the operating status of each group of electrolyzers in the system based on these capacities. It acquires real-time wind and solar power generation capacity within a preset time period and adjusts the load of each electrolyzer group in the start-up state based on this real-time capacity. By combining predicted and real-time wind and solar power generation capacity for control, the method can improve control efficiency. The stability and accuracy of the control are improved, thereby enhancing the utilization rate and safety of new energy sources. Specifically, in the process of controlling the water electrolysis hydrogen production system, the operating status of each electrolyzer group is controlled by predicting the wind and solar power generation. The load of each electrolyzer group in the start-up state is adjusted using the wind and solar power generation, further improving the stability and accuracy of the control, thus enhancing the utilization rate and safety of new energy sources. In summary, the control method for the water electrolysis hydrogen production system provided in this application can improve the utilization rate and safety of new energy sources.

[0042] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0043] Figure 1 Flowchart of the control method for the water electrolysis hydrogen production system provided in this application Figure 1 ,like Figure 1 As shown, the method includes:

[0044] Step S101: Obtain the current wind and solar power generation capacity and the predicted wind and solar power generation capacity, and control the operating status of each group of electrolyzers in the water electrolysis hydrogen production system according to the current wind and solar power generation capacity and the predicted wind and solar power generation capacity.

[0045] Specifically, it can obtain the current wind and solar power generation capacity and the predicted wind and solar power generation capacity. The current wind and solar power generation capacity refers to the current output power of the wind and solar power system. The predicted wind and solar power generation capacity refers to the predicted output power of the wind and solar power system after a preset time period. Specifically, the output power of the wind and solar power system refers to the remaining power after the system's generated power is connected to the power grid. If all the generated power of the wind and solar power system is connected to the power grid, then the output power of the wind and solar power system is zero.

[0046] Specifically, the current wind and solar power generation capacity can be obtained through real-time monitoring.

[0047] The preset time period refers to a preset time range after the current moment. Specifically, this application does not limit the preset time period; optionally, it can be within 15 minutes after the current moment.

[0048] Specifically, this application does not limit the process of obtaining the predicted wind and solar power generation. Optionally, historical wind and solar power generation can be obtained, and then the variation patterns of wind and solar power generation can be extracted from the historical wind and solar power generation. Then, the predicted wind and solar power generation can be obtained based on the current wind and solar power generation and the extracted variation patterns of wind and solar power generation. Optionally, wind and solar climate information within a preset time period can be obtained, and then the predicted wind and solar power generation can be obtained based on the current wind and solar power generation and the wind and solar climate information within the preset time period.

[0049] Specifically, after obtaining the current and predicted wind and solar power generation capacity, the operating status of each group of electrolyzers in the water electrolysis hydrogen production system can be controlled based on the current and predicted wind and solar power generation capacity.

[0050] An electrolyzer group includes at least one electrolyzer of the same type. The number of electrolyzers in a given group can vary depending on the type of electrolyzer. For example, if the type of electrolyzer is a proton exchange membrane electrolyzer (PEM), the group can include four PEMs; if the type is an alkaline electrolyzer (ALK), the group can include two PEMs. The two PEMs belonging to the same group are powered by the same transformer. By setting up electrolyzer groups and controlling the water electrolysis hydrogen production system based on these groups, control efficiency can be improved, thereby increasing the utilization rate and safety of new energy sources. For example, if a water electrolysis hydrogen production system has 48 cells, including PEM electrolyzers and 36 ALK electrolyzers, it can be divided into 12 proton exchange membrane electrolyzer groups and 18 alkaline electrolyzer groups.

[0051] Specifically, this application does not limit the process of controlling the operating status of each group of electrolyzers in the water electrolysis hydrogen production system based on the current and predicted wind and solar power generation. Optionally, the operating status and number of the electrolyzer groups to be adjusted can be determined based on the current and predicted wind and solar power generation. The water electrolysis hydrogen production system includes at least one of the following: a group of electrolyzers in standby mode, a group of electrolyzers in start-up mode, and a group of electrolyzers in shutdown mode. The application obtains the preset start-up and shutdown priorities of the electrolyzer groups and the preset electrolyzer state switching constraint logic. Based on the preset start-up and shutdown priorities and the preset electrolyzer state switching constraint logic, the application controls and adjusts the operating status of the electrolyzer groups to be adjusted.

[0052] Specifically, after the process described in this step of controlling the operating status of each group of electrolyzers in the water electrolysis hydrogen production system based on the current and predicted wind and solar power generation, if the water electrolysis hydrogen production system includes electrolyzer groups in the start-up state, then the process described in step S102 of acquiring real-time wind and solar power generation within a preset time period and adjusting the load of each group of electrolyzers in the start-up state according to the real-time wind and solar power generation is continued; if the water electrolysis hydrogen production system no longer includes electrolyzer groups in the start-up state, then the process described in step S102 of acquiring real-time wind and solar power generation within a preset time period and adjusting the load of each group of electrolyzers in the start-up state according to the real-time wind and solar power generation is not required. That is, there is no need to continue controlling the water electrolysis hydrogen production system, but the process of acquiring the current and predicted wind and solar power generation and controlling the operating status of each group of electrolyzers in the water electrolysis hydrogen production system according to the current and predicted wind and solar power generation is repeated.

[0053] Step S102: Obtain real-time wind and solar power generation within a preset time period, and adjust the load of each electrolyzer group in the start-up state in the water electrolysis hydrogen production system according to the real-time wind and solar power generation.

[0054] Specifically, within the preset time period described in step S101, real-time wind and solar power generation is acquired. Here, real-time wind and solar power generation refers to the output power of the wind and solar power generation system acquired in real time. Specifically, the process of acquiring real-time wind and solar power generation can refer to the process of acquiring the current wind and solar power generation described in step S101; that is, when the current moment arrives, the real-time wind and solar power generation is acquired through real-time monitoring.

[0055] Specifically, after acquiring real-time wind and solar power generation within a preset time period, load adjustment processing can be performed on the electrolyzer groups in each start-up state of the water electrolysis hydrogen production system based on the real-time wind and solar power generation. Specifically, this application does not limit the process of load adjustment processing on the electrolyzer groups in each start-up state of the water electrolysis hydrogen production system based on real-time wind and solar power generation; optionally, the load adjustment priority and preset load ratio adjustment rules for each start-up state of the electrolyzer groups can be acquired; and load adjustment processing can be performed on each start-up state of the electrolyzer groups based on the real-time wind and solar power generation, load adjustment priority, and preset load ratio adjustment rules.

[0056] The control method for a water electrolysis hydrogen production system provided in this application embodiment obtains the current and predicted wind and solar power generation power, and controls the operating status of each electrolyzer group in the water electrolysis hydrogen production system based on the current and predicted wind and solar power generation power. It obtains real-time wind and solar power generation power within a preset time period and adjusts the load of each electrolyzer group in the start-up state based on the real-time wind and solar power generation power. The method combines predicted and real-time wind and solar power generation power to control the water electrolysis hydrogen production system, which can improve… The high stability and accuracy of control improve the utilization rate and safety of new energy sources. Specifically, in the control process of the water electrolysis hydrogen production system, the operating status of each electrolyzer group is controlled by predicting wind and solar power generation. Load adjustment of each electrolyzer group in the start-up state is achieved through wind and solar power generation, further enhancing the stability and accuracy of control, thereby improving the utilization rate and safety of new energy sources. In summary, the control method for the water electrolysis hydrogen production system provided in this application embodiment can improve the utilization rate and safety of new energy sources.

[0057] Figure 2 Flowchart of the control method for the water electrolysis hydrogen production system provided in this application Figure 2 ,like Figure 2 As shown, in this embodiment... Figure 1 Based on the embodiments, the process of controlling the operating status of each group of electrolyzers in the water electrolysis hydrogen production system according to the current and predicted wind and solar power generation is described in detail. The method includes:

[0058] Step S201: Determine the operating status and number of the electrolytic cell group to be adjusted based on the current wind and solar power generation capacity and the predicted wind and solar power generation capacity.

[0059] Specifically, as described in step S101 regarding the group of electrolyzers, the water electrolysis hydrogen production system includes at least one group of electrolyzers, wherein the water electrolysis hydrogen production system includes at least one of the following: a group of electrolyzers in a standby state, a group of electrolyzers in a start-up state, and a group of electrolyzers in a shutdown state.

[0060] Among them, a standby electrolytic cell group refers to an electrolytic cell group whose operating status is standby, and all of its cells are in standby mode. An electrolytic cell group in startup mode refers to an electrolytic cell group whose operating status is startup, and all of its cells are in startup mode. An electrolytic cell group in shutdown mode refers to an electrolytic cell group whose operating status is shutdown, and all of its cells are in shutdown mode.

[0061] Specifically, after obtaining the current and predicted wind and solar power generation, the operating status and number of electrolyzer groups to be adjusted can be determined. For example, the number of electrolyzer groups to be adjusted from the start-up state to the standby state can be determined, or the number of electrolyzer groups to be adjusted from the standby or shutdown state to the start-up state can be determined.

[0062] Specifically, this application does not limit the process of determining the operating status and number of the electrolyzer group to be adjusted based on the current and predicted wind and solar power generation capacity. Optionally, determining the operating status and number of the electrolyzer group to be adjusted based on the current and predicted wind and solar power generation capacity includes:

[0063] If the predicted wind and solar power generation is greater than the current wind and solar power generation, the electrolyzer group to be adjusted includes at least one electrolyzer group in standby mode, or at least one electrolyzer group in standby mode and at least one electrolyzer group in shutdown mode.

[0064] If the predicted wind and solar power generation is equal to the current wind and solar power generation, then the number of electrolyzer groups to be adjusted is zero.

[0065] If the predicted wind and solar power generation is less than the current wind and solar power generation, the electrolyzer group to be adjusted shall include at least one electrolyzer group that is in operation.

[0066] Specifically, when the predicted wind and solar power generation exceeds the current wind and solar power generation, at least one non-starting electrolytic cell group can be adjusted to an starting electrolytic cell group. Therefore, the electrolytic cell group to be adjusted includes at least one standby electrolytic cell group and / or at least one shut-down electrolytic cell group. If the number of standby electrolytic cell groups meets the requirement for the number of electrolytic cell groups to be adjusted, then the electrolytic cell group to be adjusted only includes standby electrolytic cell groups; that is, the electrolytic cell group to be adjusted includes at least one standby electrolytic cell group. If the number of standby electrolytic cell groups does not meet the requirement for the number of electrolytic cell groups to be adjusted, then the electrolytic cell group to be adjusted includes both standby and shut-down electrolytic cell groups; that is, the electrolytic cell group to be adjusted includes at least one standby electrolytic cell group and at least one shut-down electrolytic cell group. If the number of electrolytic cell groups in standby state is zero, then the electrolytic cell groups to be adjusted only include electrolytic cell groups in shutdown state, that is, the electrolytic cell groups to be adjusted include at least one electrolytic cell group in shutdown state.

[0067] Specifically, when the predicted wind and solar power generation is equal to the current wind and solar power generation, it can be determined that there is no need to adjust the operating status of each group of electrolyzers in the water electrolysis hydrogen production system. Therefore, the number of groups of electrolyzers to be adjusted is zero.

[0068] Specifically, when the predicted wind and solar power generation is less than the current wind and solar power generation, at least one group of electrolyzers in the start-up state can be adjusted to a group of electrolyzers in the standby state. Therefore, the group of electrolyzers to be adjusted includes at least one group of electrolyzers in the start-up state.

[0069] Optionally, in determining the specific number of electrolyzer groups in each operating state to be adjusted, a preset electrolyzer load constraint strategy and / or a preset electrolyzer total hydrogen production constraint strategy can be used.

[0070] Optionally, the formula for the preset electrolytic cell load constraint strategy is as follows:

[0071]

[0072]

[0073]

[0074]

[0075]

[0076]

[0077]

[0078] in, For the power consumption of the electrolytic cell, This refers to the voltage of the electrolytic cell. This is the operating current of the electrolytic cell. Among them, The reversible voltage for the water electrolysis reaction. This is an ohmic overvoltage caused by the resistance of the tank. This is the sum of the electrode activation overvoltages. Wherein, Let F be the Gibbs free energy, F be the Faraday constant, and A be the electrode area of ​​the electrolytic cell. In production status. This is the operating current. For stack temperature, For constant coefficients of the electrolytic cell, , These are the upper and lower limits of the electrolytic cell's operating current, respectively. , These represent the upper and lower limits of the electrolytic cell's operating temperature, respectively. The above formulas are determined based on the UI characteristics and efficiency mechanism model of the electrolytic cell, as well as operating constraints. As an electrical load, the active power consumed by the electrolytic cell during production is determined by its stack voltage and operating current. In practical engineering, the voltage-current (UI) characteristics of the electrolytic cell can be obtained through empirical formulas.

[0079] Specifically, based on the above description, the power consumption of the electrolytic cell can be expressed as: That is, the power consumption of the electrolytic cell can be determined by the production status. Operating current Stack temperature A joint decision.

[0080] Optionally, the formula for the preset total hydrogen production constraint strategy of the electrolyzer is as follows:

[0081]

[0082]

[0083]

[0084] in, For Faraday efficiency, , The correlation coefficient is the Faraday efficiency. Where F is the number of electrolytic cells in a single electrolytic cell, and F is the Faraday constant. This represents the hydrogen production coefficient per unit current. The above formula is based on the total hydrogen production of the electrolyzer. As determined by the mechanistic model.

[0085] In the process of determining the operating status and number of electrolyzer groups to be adjusted based on the current and predicted wind and solar power generation, the relationship between the current and predicted wind and solar power generation allows for a simple and efficient determination of the operating status and number of electrolyzer groups to be adjusted. This improves the control efficiency and accuracy of the water electrolysis hydrogen production system, thereby enhancing the utilization rate and safety of new energy sources. Furthermore, in determining the operating status of the electrolyzer groups to be adjusted, the current operating status of each electrolyzer group in the water electrolysis hydrogen production system further improves the control accuracy of the system, thus enhancing its control efficiency and accuracy, and ultimately improving the utilization rate and safety of new energy sources. In summary, the process provided in this application for determining the operating status and number of electrolyzer groups to be adjusted based on the current and predicted wind and solar power generation can improve the utilization rate and safety of new energy sources.

[0086] Step S202: Obtain the preset start / stop priority of the electrolytic cell group and the preset electrolytic cell state switching constraint logic.

[0087] Specifically, it can obtain the preset start / stop priority of the electrolytic cell group and the preset electrolytic cell state switching constraint logic.

[0088] The preset start / stop priority of the electrolytic cell group refers to the preset priority of the electrolytic cell group during the process of adjusting the operating status of the electrolytic cell to be adjusted. Optionally, the electrolytic cell group includes at least one of the following: proton exchange membrane electrolytic cell group, insulated gate bipolar transistor alkaline electrolytic cell group, and thyristor alkaline electrolytic cell group.

[0089] The preset start / stop priority of the electrolyzer groups is as follows: proton exchange membrane electrolyzer groups take priority over insulated gate bipolar transistor (IGBT) alkaline electrolyzer groups, and IGBT alkaline electrolyzer groups take priority over thyristor alkaline electrolyzer groups.

[0090] Specifically, the proton exchange membrane electrolyzer group has the characteristics of rapid start-up and shutdown and load increase / decrease. Therefore, the proton exchange membrane electrolyzer group can be identified as the electrolyzer group with the highest start-up and shutdown priority to ensure the stable operation of the water electrolysis hydrogen production system.

[0091] Specifically, although the alkaline electrolyzer group does not have the characteristics of rapid start-up and shutdown and load increase / decrease, it has the characteristics of high hydrogen production efficiency and low operating cost. Therefore, its start-up and shutdown priority can be set to be lower than that of the proton exchange membrane electrolyzer group, thereby reducing the overall production cost of the water electrolysis hydrogen production system.

[0092] The alkaline electrolyzer group includes both insulated-gate bipolar transistor (IGBT) alkaline electrolyzer group and thyristor alkaline electrolyzer group. Compared to the thyristor alkaline electrolyzer group, the IGBT group is better suited to fluctuating power supplies, has faster start-up and shutdown times, faster load increases and decreases, and the number of starts has less impact on lifespan and performance. Therefore, the start-up / shutdown priority of the IGBT group can be set higher than that of the thyristor alkaline electrolyzer group.

[0093] Optionally, if the electrolyzer groups belong to the same start-stop priority, for example, if multiple electrolyzer groups are all proton exchange membrane electrolyzer groups, then the start-up priority of each electrolyzer group follows the principle of first shut down, first start.

[0094] In determining the start-up and shutdown priorities of the preset electrolyzer groups, the accuracy of the start-up and shutdown priority determination can be improved based on the operating characteristics of each type of electrolyzer group, thereby improving the control accuracy of the water electrolysis hydrogen production system and thus improving the control efficiency and accuracy of the water electrolysis hydrogen production system.

[0095] The preset electrolyzer state switching constraint logic is the constraint logic followed by each electrolyzer in the water electrolysis hydrogen production system during state switching. Optionally, the formula for the preset electrolyzer state switching constraint logic is as follows:

[0096]

[0097] in, This represents the startup state of the nth electrolytic cell at time t. This represents the startup state of the nth electrolytic cell at time t-1; This represents the standby state of the nth electrolytic cell at time t. This represents the shutdown state of the nth electrolytic cell at time t-1. Let represent the shutdown state of the nth electrolytic cell at time t. This represents the shutdown state of the nth electrolytic cell at time t-1. This represents the shutdown state of the nth electrolytic cell at time t-2. , These represent the start-up and shutdown actions of the nth electrolytic cell at time t.

[0098] Step S203: Based on the preset start-stop priority of the electrolytic cell group and the preset electrolytic cell state switching constraint logic, control and adjust the operating state of the electrolytic cell group to be adjusted.

[0099] Specifically, based on the preset start-stop priority of the electrolytic cell group and the preset electrolytic cell state switching constraint logic obtained in step S202, the operating state of the electrolytic cell group to be adjusted as determined in step S201 can be controlled and adjusted.

[0100] Optionally, the conditions for commissioning the electrolyzer group provided in this application embodiment include: the remote control system (DCS) is operating stably, that is, it can automatically, accurately, and timely send interaction signals between the electrolyzer group and the external system to the executing entity of the current method, such as the control system server; all alkaline electrolyzer (ALK) groups are in operation, hydrogen is connected to the pipeline network, and the temperature after the cell reaches the design temperature; all proton exchange membrane electrolyzer (PEM) groups are in operation or in a hot standby shutdown state; in response to the remote control system (DCS) operator selecting the hydrogen production plant or electrolyzer group, the range of electrolyzer groups scheduled by the hydrogen production group control module is adjusted.

[0101] Among them, hydrogen production modules that have exited the scheduling range of the hydrogen production group control module will be reinstated into the scheduling range of the hydrogen production group control module after the start-up load reaches more than 50%, hydrogen is connected to the pipeline network, the temperature after the tank reaches the design temperature, and key parameters such as oxygen in hydrogen, hydrogen in oxygen, and separator liquid level difference are normal, in response to the remote control system (DCS) operator's point-selection operation.

[0102] Optionally, the cut-out conditions for the electrolyzer group provided in this application embodiment include: the remote control system (DCS) cutting off the hydrogen production group control module; the hydrogen production group control module operator manually cutting off; and the remote control system (DCS) operator selecting to remove some electrolyzer groups from the scheduling range of the hydrogen production group control module according to the hydrogen production plant or electrolyzer group.

[0103] Optionally, embodiments of this application may set a preset load change rate and the number of times each natural day the electrolyzer group is allowed to start and stop. If the number of times the electrolyzer group starts and stops exceeds the preset number of starts and stops, it will be removed from the scheduling range of the hydrogen production group control module, that is, the remote control system (DCS) will send it an uncallable mode signal.

[0104] Optionally, except when the hydrogen storage tank has reached its maximum hydrogen storage capacity, all alkaline electrolyzer (ALK) groups within the scheduling range of the hydrogen production group control module will remain operational without shutdown; when the proton exchange membrane electrolyzer (PEM) group is shut down, it will remain in hot standby mode thanks to its internal heater.

[0105] Optionally, the number of shutdowns for each electrolytic cell group can be evenly distributed, with the shutdown sequence following the principle of starting first and then stopping first, prioritizing load increases and decreases without changing the start-stop status.

[0106] The embodiments of this application provide a process for controlling the operating status of each group of electrolyzers in a water electrolysis hydrogen production system based on the current and predicted wind and solar power generation. This process involves determining the operating status and number of the electrolyzer groups to be adjusted based on the current and predicted wind and solar power generation, obtaining preset start-stop priorities and preset state switching constraint logic for the electrolyzer groups, and then controlling and adjusting the operating status of the electrolyzer groups to be adjusted according to these preset priorities and state switching constraint logic. By determining the operating status and number of the electrolyzer groups to be adjusted, and using the preset start-stop priorities and state switching constraint logic, the operating status of each group of electrolyzers in the water electrolysis hydrogen production system can be controlled efficiently and accurately, improving the accuracy of operating status control and thus enhancing the control efficiency and accuracy of the water electrolysis hydrogen production system.

[0107] Figure 3 Flowchart of the control method for the water electrolysis hydrogen production system provided in this application Figure 3 ,like Figure 3 As shown, in this embodiment... Figure 1 or Figure 2 Based on the embodiments, the process of adjusting the load of each electrolyzer group in the water electrolysis hydrogen production system according to the real-time wind and solar power generation is described in detail. The method includes:

[0108] Step S301: Obtain the load adjustment priority and preset load ratio adjustment rules for each electrolytic cell group in the startup state.

[0109] Specifically, it can obtain the load adjustment priority and preset load ratio adjustment rules for each electrolytic cell group in its startup state.

[0110] The load adjustment priority refers to the preset priority of the electrolytic cell groups in the startup state during the load adjustment process. Optionally, the electrolytic cell groups in the startup state include at least one of the following: proton exchange membrane electrolytic cell groups, insulated gate bipolar transistor alkaline electrolytic cell groups, and thyristor alkaline electrolytic cell groups.

[0111] The load adjustment priority is as follows: proton exchange membrane electrolyzer group takes precedence over insulated gate bipolar transistor alkaline electrolyzer group, and insulated gate bipolar transistor alkaline electrolyzer group takes precedence over thyristor alkaline electrolyzer group.

[0112] Specifically, the descriptions of the proton exchange membrane electrolyzer group, the insulated gate bipolar transistor alkaline electrolyzer group, and the thyristor alkaline electrolyzer group can be found in step S202, and will not be repeated here.

[0113] In determining the load adjustment priority, the accuracy of load adjustment priority determination can be improved based on the operating characteristics of various types of electrolyzer groups, thereby improving the control accuracy of the water electrolysis hydrogen production system and further enhancing the control efficiency and accuracy of the water electrolysis hydrogen production system.

[0114] The preset load ratio adjustment rules refer to the rules for adjusting the load ratio during the load adjustment process for each electrolytic cell group in its start-up state. Optionally, the preset load ratio adjustment rules include preset load increase ratio adjustment rules and preset load decrease ratio adjustment rules.

[0115] The preset load increase ratio adjustment rules include at least one load increase adjustment stage. The load increase adjustment stages include, in sequence: adjusting from the minimum load ratio to the optimal load ratio, adjusting from the optimal load ratio to the full load ratio, and adjusting from the full load ratio to the maximum load ratio.

[0116] The preset load reduction ratio adjustment rules include at least one load reduction adjustment stage. The load increase adjustment stages include, in sequence: adjusting from the maximum load ratio to the full load ratio, adjusting from the full load ratio to the optimal load ratio, and adjusting from the optimal load ratio to the minimum load ratio.

[0117] Among them, the preset load increase ratio adjustment rule is the preset load ratio adjustment rule during the load increase process, and the preset load decrease ratio adjustment rule is the preset load ratio adjustment rule during the load decrease process.

[0118] The minimum load ratio is the minimum operating load range of the electrolyzer group in the water electrolysis hydrogen production system, for example, 50%, and the maximum load ratio is the maximum operating load range of the electrolyzer group in the water electrolysis hydrogen production system, for example, 110%.

[0119] The optimal load ratio is the charge load rate of the electrolyzer group in the water electrolysis hydrogen production system under the best operating conditions. At this point, the optimal load ratio achieves the lowest overall power consumption for hydrogen production, for example, 75%, while meeting all indicators and not affecting performance and lifespan during long-term operation. Optionally, the optimal load ratio can be adjusted based on the trial and commissioning conditions of the water electrolysis hydrogen production system.

[0120] The full load ratio is 100%.

[0121] For example, the load range of a single "4-to-1" hydrogen production system is 50%-110%. When the hydrogen production power issued by the control is below the rated total power corresponding to 100% full operation of the electrolyzer group, the load of a single electrolyzer group is 50%-100%, and the load of the electrolyzer group that has been turned on is not allowed to exceed 100%. When the hydrogen production power issued by the control is above the rated total power corresponding to 100% full operation of the electrolyzer group, the load of a single electrolyzer group is 50%-110%, and the allocation method is that the load of the electrolyzer group is 100% full operation plus the excess load, which is then allocated to each electrolyzer group according to the load increase priority.

[0122] The preset load ratio adjustment rules are divided into multiple adjustment stages, which can complete the smooth adjustment of the load ratio, thereby improving the control accuracy of the water electrolysis hydrogen production system and further improving the control efficiency and accuracy of the water electrolysis hydrogen production system.

[0123] Step S302: Based on the real-time wind and solar power generation, load adjustment priority, and preset load ratio adjustment rules, perform load adjustment processing on each electrolytic cell group in the startup state.

[0124] Specifically, based on the real-time wind and solar power generation, the load adjustment priority obtained in step S301, and the preset load ratio adjustment rules, load adjustment processing can be performed on each electrolytic cell group in the startup state.

[0125] Specifically, this application does not limit the process of adjusting the load of each electrolyzer group in its startup state based on real-time wind and solar power generation, load adjustment priority, and preset load ratio adjustment rules. Optionally, the controlled hydrogen production power of the water electrolysis hydrogen production system can be determined first based on the real-time wind and solar power generation, and then the load of each electrolyzer group in its startup state can be adjusted based on the controlled hydrogen production power of the water electrolysis hydrogen production system, the current load rate of each electrolyzer group in its startup state, the load adjustment priority, and the preset load ratio adjustment rules. Here, the controlled hydrogen production power refers to the load ratio to which the water electrolysis hydrogen production system is to be adjusted.

[0126] For example, during the load increase process, if the water electrolysis hydrogen production system includes a proton exchange membrane electrolyzer group (PEM electrolyzer group), an insulated gate bipolar transistor alkaline electrolyzer group (IGBT alkaline electrolyzer group), and a thyristor alkaline electrolyzer group; with a minimum load ratio of 50%, a maximum load ratio of 110%, and an optimal load ratio of 75%, and if the controlled hydrogen production power is less than or equal to 100% load power of all electrolyzer groups, the load can be adjusted sequentially based on the following load increase adjustment stages: PEM electrolyzer group 50%→75%; IGBT alkaline electrolyzer group 50%→75%; thyristor alkaline electrolyzer group 50%→75%; PEM electrolyzer group 75%→100%; IGBT alkaline electrolyzer group 75%→100%; thyristor alkaline electrolyzer group 75%→100%. If the controlled hydrogen production power exceeds 100% of the total load power of all electrolyzer groups, the load adjustment can be carried out sequentially based on the following load adjustment stages: PEM electrolyzer group 50%→75%; IGBT alkaline electrolyzer group 50%→75%; thyristor alkaline electrolyzer group 50%→75%; PEM electrolyzer group 75%→100%; IGBT alkaline electrolyzer group 75%→100%; thyristor alkaline electrolyzer group 75%→100%; PEM electrolyzer group 100%→110%; IGBT alkaline electrolyzer group 100%→110%; thyristor alkaline electrolyzer group 100%→110%.

[0127] For example, during the load reduction process, if the water electrolysis hydrogen production system includes a proton exchange membrane electrolyzer group (PEM electrolyzer group), an insulated gate bipolar transistor alkaline electrolyzer group (IGBT alkaline electrolyzer group), and a thyristor alkaline electrolyzer group; with a minimum load ratio of 50%, a maximum load ratio of 110%, and an optimal load ratio of 75%, and if the controlled hydrogen production power exceeds 100% of the total load power of all electrolyzer groups, the load can be adjusted sequentially based on the following load reduction adjustment stages: PEM electrolyzer group 110%→100%; IGBT alkaline electrolyzer group 110%→100%; thyristor alkaline electrolyzer group 110%→100%. If the controlled hydrogen production power is less than or equal to 100% load power of all electrolyzer groups, load adjustment can be performed sequentially based on the following reduction adjustment stages: PEM electrolyzer group 110%→100%; IGBT alkaline electrolyzer group 110%→100%; thyristor alkaline electrolyzer group 110%→100%; PEM electrolyzer group 100%→75%; IGBT alkaline electrolyzer group 100%→75%; thyristor alkaline electrolyzer group 100%→75%; PEM electrolyzer group 75%→50%; IGBT alkaline electrolyzer group 75%→50%; thyristor alkaline electrolyzer group 75%→50%.

[0128] The embodiments of this application provide a process for adjusting the load of each electrolyzer group in the start-up state of the water electrolysis hydrogen production system based on real-time wind and solar power generation. By acquiring the load adjustment priority and preset load ratio adjustment rules of each electrolyzer group in the start-up state, the load adjustment is performed on each electrolyzer group in the start-up state according to the real-time wind and solar power generation, load adjustment priority, and preset load ratio adjustment rules. In this way, the load adjustment of each electrolyzer group in the start-up state can be performed efficiently and accurately, thereby improving the control accuracy of the water electrolysis hydrogen production system and further improving the control efficiency and accuracy of the water electrolysis hydrogen production system.

[0129] In one possible embodiment, after acquiring real-time wind and solar power generation within a preset time period and adjusting the load of each electrolyzer group in the water electrolysis hydrogen production system based on the real-time wind and solar power generation, the method further includes:

[0130] If it is determined that the load ratio of all electrolyzer groups in the start-up state has been adjusted to the maximum or minimum load ratio, but it still cannot meet the real-time wind and solar power generation demand, then the process of controlling the operation state of each electrolyzer group in the water electrolysis hydrogen production system and adjusting the load of each electrolyzer group in the start-up state is repeated until the real-time wind and solar power generation demand is met.

[0131] For example, if the load increase process is based on the load adjustment stage described in step S302, and the load ratio of all electrolyzer groups in the start-up state has been adjusted to 110%, but the hydrogen production power of the water electrolysis hydrogen production system is determined to be 120% based on the real-time wind and solar power generation, that is, even after adjusting the load ratio of all electrolyzer groups in the start-up state to the maximum load ratio, it is still impossible to meet the real-time wind and solar power generation demand. Then, the operating state of each electrolyzer group in the water electrolysis hydrogen production system is repeatedly controlled, that is, more electrolyzer groups are controlled to switch to the start-up state. Then, according to the real-time wind and solar power generation, load adjustment priority, and preset load ratio adjustment rules, the updated start-up electrolyzer groups are subjected to load increase processing. At this time, if the result of the load increase processing meets the real-time wind and solar power generation demand, the load increase process is completed. Otherwise, the operating state of each electrolyzer group in the water electrolysis hydrogen production system and the process of load increase processing for each start-up electrolyzer group are repeated until the real-time wind and solar power generation demand is met.

[0132] For example, if the load reduction process is based on the load reduction adjustment stage described in step S302, and the load ratio of all electrolyzer groups in the start-up state has been adjusted to 50%, but the hydrogen production power of the water electrolysis hydrogen production system is determined to be 40% based on the real-time wind and solar power generation, that is, even after adjusting the load ratio of all electrolyzer groups in the start-up state to the minimum load ratio, it is still impossible to meet the real-time wind and solar power generation demand. Then, the operating state of each electrolyzer group in the water electrolysis hydrogen production system is repeatedly controlled, that is, more electrolyzer groups in the start-up state are switched to standby state or shutdown state. Then, according to the real-time wind and solar power generation, load adjustment priority, and preset load ratio adjustment rules, the updated electrolyzer groups in the start-up state are subjected to load reduction processing. At this time, if the result of the load reduction processing meets the real-time wind and solar power generation demand, the load reduction process is completed. Otherwise, the operating state of each electrolyzer group in the water electrolysis hydrogen production system and the process of reducing the load of each electrolyzer group in the start-up state are repeatedly controlled until the real-time wind and solar power generation demand is met.

[0133] In situations where the load ratio of all electrolyzer groups in startup mode has been adjusted to the maximum or minimum load ratio, but still cannot meet the real-time demand for wind and solar power generation, the approach is not to simply reduce or increase the load ratio of each electrolyzer group in startup mode. Instead, the approach is to update the electrolyzer groups in startup mode to achieve the load increase or decrease target without affecting the normal operation of each electrolyzer group. This improves the control accuracy of the water electrolysis hydrogen production system and further enhances its control efficiency and accuracy.

[0134] Optionally, embodiments of this application also provide a fault handling mechanism for the electrolyzer group, including: when the hydrogen production system malfunctions, the hydrogen production group control module automatically removes the faulty electrolyzer group from the scheduling range and reallocates the load to ensure the normal operation of other electrolyzer groups; the hydrogen production group control module monitors key parameters of the hydrogen production system in real time (such as inlet temperature, outlet temperature, hydrogen concentration in oxygen, etc.), and automatically adjusts the operating status of the electrolyzer group when the parameters are abnormal to ensure the safe and stable operation of the system.

[0135] The execution principles of this application embodiment include: electrolyzer groups synchronously execute shutdown, load increase, or load decrease commands within the adjustment cycle; electrolyzer groups that have not completed shutdown commands cannot execute new adjustment commands; electrolyzer groups that have not completed load increase or load decrease commands can execute new adjustment commands; for programs executed across cycles, after completing the command, execution continues according to the latest received command. Electrolyzer groups that have exited the hydrogen production group control module's scheduling range are allowed to rejoin the hydrogen production group control module's scheduling range after the start-up load reaches 50% or more, hydrogen is connected to the pipeline network, and the downstream temperature reaches the design temperature, in response to the remote control system (DCS) operator's point-and-click operation.

[0136] Figure 4 This is a schematic diagram of the control device for the water electrolysis hydrogen production system provided in this application, as shown below. Figure 4 As shown, the control device 40 of the water electrolysis hydrogen production system provided in this embodiment includes:

[0137] The first control module 401 is used to acquire the current wind and solar power generation power and the predicted wind and solar power generation power, and control the operating status of each group of electrolyzers in the water electrolysis hydrogen production system according to the current wind and solar power generation power and the predicted wind and solar power generation power; wherein, the predicted wind and solar power generation power is the output power of the wind and solar power generation system after a preset time period; the preset time period is a preset time range after the current moment.

[0138] The second control module 402 is used to acquire real-time wind and solar power generation power within a preset time period, and to perform load adjustment processing on the electrolyzer groups in each start-up state of the water electrolysis hydrogen production system according to the real-time wind and solar power generation power; wherein, the real-time wind and solar power generation power is the output power of the wind and solar power generation system acquired in real time.

[0139] In one possible implementation, the first control module 401 is specifically used to determine the operating status and number of the electrolyzer group to be adjusted based on the current wind and solar power generation and the predicted wind and solar power generation; wherein, the water electrolysis hydrogen production system includes at least one of the following: a standby electrolyzer group, a start-up electrolyzer group, and a shut-down electrolyzer group; acquire the preset start-up and shutdown priorities of the electrolyzer group and the preset electrolyzer state switching constraint logic; and control and adjust the operating status of the electrolyzer group to be adjusted according to the preset start-up and shutdown priorities and the preset electrolyzer state switching constraint logic.

[0140] In one possible implementation, the first control module 401 is further specifically configured to, if the predicted wind and solar power generation is greater than the current wind and solar power generation, include at least one electrolytic cell group in a standby state and / or at least one electrolytic cell group in a shut-down state in the electrolytic cell group to be adjusted; if the predicted wind and solar power generation is equal to the current wind and solar power generation, the number of electrolytic cell groups to be adjusted is zero; if the predicted wind and solar power generation is less than the current wind and solar power generation, include at least one electrolytic cell group in a start-up state in the electrolytic cell group to be adjusted.

[0141] In one possible implementation, the electrolyzer group includes at least one of a proton exchange membrane electrolyzer group, an insulated gate bipolar transistor (IGBT) alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; the preset start / stop priority of the electrolyzer group is that the proton exchange membrane electrolyzer group takes precedence over the IGBT alkaline electrolyzer group, and the IGBT alkaline electrolyzer group takes precedence over the thyristor alkaline electrolyzer group.

[0142] In one possible implementation, the second control module 402 is specifically used to acquire the load adjustment priority and preset load ratio adjustment rules of each electrolytic cell group in the startup state; and to perform load adjustment processing on each electrolytic cell group in the startup state according to the real-time wind and solar power generation, load adjustment priority and preset load ratio adjustment rules.

[0143] In one possible implementation, the electrolyzer group in the start-up state includes at least one of a proton exchange membrane electrolyzer group, an insulated gate bipolar transistor (IGBT) alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; the load adjustment priority is that the proton exchange membrane electrolyzer group takes precedence over the IGBT alkaline electrolyzer group, and the IGBT alkaline electrolyzer group takes precedence over the thyristor alkaline electrolyzer group.

[0144] In one possible implementation, the preset load ratio adjustment rules include preset load increase ratio adjustment rules and preset load decrease ratio adjustment rules; wherein, the preset load increase ratio adjustment rules include at least one load increase adjustment stage; the load increase adjustment stage sequentially includes: adjusting from minimum load ratio to optimal load ratio, adjusting from optimal load ratio to full load ratio, and adjusting from maximum full load ratio to maximum load ratio; wherein, the preset load decrease ratio adjustment rules include at least one load decrease adjustment stage; the load increase adjustment stage sequentially includes: adjusting from maximum load ratio to full load ratio, adjusting from full load ratio to optimal load ratio, and adjusting from optimal load ratio to minimum load ratio.

[0145] In one possible implementation, the second control module 402 is further configured to, if it is determined that the load ratio of all electrolyzer groups in the start-up state has been adjusted to the maximum load ratio or the minimum load ratio, but still cannot meet the real-time wind and solar power generation demand, then repeatedly control the operating state of each electrolyzer group in the water electrolysis hydrogen production system and perform load adjustment processing on each electrolyzer group in the start-up state until the real-time wind and solar power generation demand is met.

[0146] The control device for the water electrolysis hydrogen production system provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0147] Figure 5 A schematic diagram of the structure of the electronic device provided in this application. Figure 5 As shown, the electronic device 50 provided in this embodiment includes at least one processor 501 and a memory 502. Optionally, the electronic device 50 further includes a communication component 503. The processor 501, memory 502, and communication component 503 are connected via a bus 504.

[0148] In a specific implementation, at least one processor 501 executes computer execution instructions stored in memory 502, causing at least one processor 501 to perform the above-described method.

[0149] The specific implementation process of processor 501 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0150] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0151] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0152] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0153] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0154] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0155] The aforementioned readable storage medium 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. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0156] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0157] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0158] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0159] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0160] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0161] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0162] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A control method of a hydrogen production system by electrolysis of water, characterized by, The method comprises: acquiring current wind and light power generation and predicted wind and light power generation, and controlling the operation state of each electrolyzer group in the water electrolysis hydrogen production system according to the current wind and light power generation and the predicted wind and light power generation; wherein the predicted wind and light power generation is the output power of the wind and light power generation system after a predicted time period; and the predicted time period is a preset time range after the current time; acquiring real-time wind and light power generation within the predicted time period, and performing load adjustment processing on each electrolyzer group in a starting state in the water electrolysis hydrogen production system according to the real-time wind and light power generation; wherein the real-time wind and light power generation is the output power of the wind and light power generation system acquired in real time.

2. The method of claim 1, wherein, The method of controlling the operation state of each electrolyzer group in the water electrolysis hydrogen production system according to the current wind and light power generation and the predicted wind and light power generation comprises: determining the operation state and the number of electrolyzer groups to be adjusted according to the current wind and light power generation and the predicted wind and light power generation; wherein the water electrolysis hydrogen production system comprises at least one of an electrolyzer group in a standby state, an electrolyzer group in a starting state, and an electrolyzer group in a shutdown state; acquiring a preset electrolyzer group start-stop priority and a preset electrolyzer state switching constraint logic; controlling and adjusting the operation state of the electrolyzer groups to be adjusted according to the preset electrolyzer group start-stop priority and the preset electrolyzer state switching constraint logic.

3. The method of claim 2, wherein, The method of determining the operation state and the number of electrolyzer groups to be adjusted according to the current wind and light power generation and the predicted wind and light power generation comprises: if the predicted wind and light power generation is greater than the current wind and light power generation, then the electrolyzer groups to be adjusted comprise at least one electrolyzer group in a standby state and / or at least one electrolyzer group in a shutdown state; if the predicted wind and light power generation is equal to the current wind and light power generation, then the number of electrolyzer groups to be adjusted is zero; if the predicted wind and light power generation is less than the current wind and light power generation, then the electrolyzer groups to be adjusted comprise at least one electrolyzer group in a starting state.

4. The method of claim 2, wherein, The electrolyzer groups comprise at least one of a proton exchange membrane electrolyzer group, an insulated gate bipolar transistor alkaline electrolyzer group, and a thyristor alkaline electrolyzer group; The preset electrolyzer group start-stop priority is that the proton exchange membrane electrolyzer group is prior to the insulated gate bipolar transistor alkaline electrolyzer group, and the insulated gate bipolar transistor alkaline electrolyzer group is prior to the thyristor alkaline electrolyzer group.

5. The method of claim 1, wherein, The method of performing load adjustment processing on each electrolyzer group in a starting state in the water electrolysis hydrogen production system according to the real-time wind and light power generation comprises: acquiring a load adjustment priority of each electrolyzer group in a starting state and a preset load proportion adjustment rule; performing load adjustment processing on each electrolyzer group in a starting state according to the real-time wind and light power generation, the load adjustment priority, and the preset load proportion adjustment rule.

6. The method of claim 5, wherein, The start-up state electrolyzer group includes at least one of a proton exchange membrane electrolyzer group, an insulated gate bipolar transistor alkaline electrolyzer group, and a thyristor alkaline electrolyzer group. The load adjustment priority is that the proton exchange membrane electrolyzer group is prior to the insulated gate bipolar transistor alkaline electrolyzer group, and the insulated gate bipolar transistor alkaline electrolyzer group is prior to the thyristor alkaline electrolyzer group.

7. The method of claim 5, wherein, The preset load ratio adjustment rule includes a preset load increase ratio adjustment rule and a preset load decrease ratio adjustment rule. The preset load increase ratio adjustment rule includes at least one load increase adjustment stage, and the load increase adjustment stage includes, in sequence, adjustment from a minimum load ratio to an optimal load ratio, adjustment from the optimal load ratio to a full load ratio, and adjustment from the full load ratio to a maximum load ratio. The preset load decrease ratio adjustment rule includes at least one load decrease adjustment stage, and the load decrease adjustment stage includes, in sequence, adjustment from the maximum load ratio to the full load ratio, adjustment from the full load ratio to the optimal load ratio, and adjustment from the optimal load ratio to the minimum load ratio.

8. The method according to any one of claims 1 to 7, characterized in that, After the real-time wind-solar power generation power is obtained within the preset time period and the load adjustment processing of each start-up state electrolyzer group in the electrolytic water hydrogen production system is performed according to the real-time wind-solar power generation power, the method further includes: If it is determined that the load ratios of all the start-up state electrolyzer groups have been adjusted to the maximum load ratio or the minimum load ratio, but the demand for the real-time wind-solar power generation power cannot be met, the process of controlling the operating states of each electrolyzer group in the electrolytic water hydrogen production system and performing the load adjustment processing of each start-up state electrolyzer group is repeated until the demand for the real-time wind-solar power generation power is met.

9. A control device of a hydrogen production system by electrolysis of water, characterized by, It includes: The first control module is configured to obtain a current wind-solar power generation power and a predicted wind-solar power generation power, and control the operating states of each electrolyzer group in the electrolytic water hydrogen production system according to the current wind-solar power generation power and the predicted wind-solar power generation power. The predicted wind-solar power generation power is an output power of the wind-solar power generation system predicted after a preset time period. The preset time period is a preset time range after the current time. The second control module is configured to obtain a real-time wind-solar power generation power within the preset time period, and perform load adjustment processing of each start-up state electrolyzer group in the electrolytic water hydrogen production system according to the real-time wind-solar power generation power. The real-time wind-solar power generation power is an output power of the wind-solar power generation system obtained in real time.

10. An electronic device, comprising: It includes: A memory and a processor; The memory stores computer execution instructions; The processor executes the computer execution instructions stored in the memory, so that the processor executes the method of any one of claims 1-8.

11. A computer readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to implement the method of any one of claims 1-8.

12. A computer program product, characterised in that, It includes a computer program, which is executed by the processor to implement the method of any one of claims 1-8.

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