Control method and device of electrolytic hydrogen production system and storage medium

Abstract

The invention discloses a control method and device of an electrolytic hydrogen production system and a storage medium. The method comprises the following steps: acquiring a power signal and a historical power curve of a power supply; obtaining a predicted power curve based on the historical power curve and the power signal; based on the predicted power curve, a target control strategy set is generated, the target control strategy set is used for controlling a target assembly to execute a target action, and the target action comprises controlling the electrolytic bath to conduct electrolysis or heating alkali liquor in the electrolytic bath. The technical problem that the dynamic response capacity of an alkaline electrolysis system is poor is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production by water electrolysis, and in particular to a control method, device and storage medium for a hydrogen production system by water electrolysis. Background Art

[0002] Hydrogen is an important industrial raw material and also an energy carrier. At present, hydrogen production technology mainly converts fossil fuels such as coal and natural gas into steam at high temperature, accounting for more than 99% of the total output; another type of hydrogen production technology is water electrolysis, which can be coupled with renewable energy power generation processes such as wind power, photovoltaics, and hydropower, which is commonly known as green hydrogen production. It can achieve large-scale and flexible consumption of renewable energy and significantly reduce the carbon footprint of the hydrogen production process. The cost of renewable energy power generation will continue to decrease. In the context of responding to climate change and energy transformation, green hydrogen production will become the mainstream way of hydrogen energy supply in the future.

[0003] The principle of water electrolysis is to pass direct current through the two conductive plates in the electrolytic cell, and dissociate water molecules into hydrogen and oxygen through redox reactions through electrochemical processes, which are precipitated at the cathode and anode respectively. At present, the most widely used method is to produce hydrogen by alkaline water electrolysis. The electrolytic cell generally adopts a filter press bipolar structure, which is composed of multiple unit chambers of the same size and structure connected in series, and is firmly pressed together by end pressure plates and fasteners such as fastening bolts to form a complete electrolytic cell. The electrolytic cell is the core of the hydrogen production system, using alkaline liquid such as sodium hydroxide or potassium hydroxide solution as an electrolyte solution so that the current can flow between the anode and the cathode. There are alkali liquid inlet pipes on the end plates on both sides of the electrolytic cell, and hydrogen and oxygen liquid outlet pipes on the upper part; the alkali liquid decomposes under the action of direct current at both ends of the electrolytic cell, and hydrogen and oxygen are precipitated on the electrode surface, and enter the gas-liquid separation system on both sides of the hydrogen and oxygen through their respective channels. The separation system uses gravity to separate gas and alkali liquid, and the separated hydrogen and oxygen enter the subsequent cooling, washing, separation, purification and other steps to obtain the final gas product. The alkali separated by the separator is collected in the bottom connecting pipe, cooled by heat exchange in the alkali heat exchanger, and sent back to the electrolyzer by the alkali pump to form a closed-loop system to ensure the continuous operation of the electrolyzer. The electrolyte concentration and temperature in the electrolyzer need to be monitored and controlled to ensure the reaction efficiency and product quality. The alkaline electrolyzer generally operates at 70-90°C. Maintaining a higher operating temperature helps to improve the kinetic rate of the electrolysis reaction and the efficiency of the electric hydrogen conversion. The concentration of the alkali solution needs to be controlled within a certain concentration range, generally 30% to 40% by mass, to ensure the smooth flow of electrolysis and conduction as much as possible. These parameters are precisely controlled by the control system. The control system usually includes sensors and feedback loops, which can monitor the operating status of the electrolyzer and adjust the operation as needed to keep various state parameters within a reasonable range. Parameters that have a greater impact on operation include input power, operating temperature, pressure, etc. If the input power is too low, the pressure difference between the hydrogen and oxygen on both sides of the electrolysis chamber is large, and hydrogen and oxygen are prone to cross-talk, approaching the explosion limit of the mixture of the two, which will increase the safety risk. At lower temperatures, the electrode reaction kinetics are slower and the electric-to-hydrogen conversion efficiency is lower. At the same time, the electrolyte ion transfer rate is slow, which increases the overall apparent resistance of the electrolyzer and increases the thermal effect during the electrochemical reaction, all of which will reduce the energy conversion efficiency of water electrolysis to produce hydrogen.

[0004] When using fluctuating and intermittent power sources such as wind power and photovoltaics as the power source of the electrolyzer, due to the large fluctuation of input power, the electrolysis hydrogen production system needs to be able to respond to these changes quickly and flexibly to control the operation of the electrolyzer. The dynamic response capability of the traditional alkaline electrolysis system is poor, the electrolyzer cold start process is slow, and it cannot operate under low input power. For example, for some electrolyzers, when the input power is less than 40% of the rated power, the electrolyzer can only stop running from a safety perspective, and the corresponding electricity cannot be used. In other cases, after the electrolyzer is shut down for dozens of minutes, the temperature of the system equipment, pipelines and alkali solution will decrease. When it is restarted, it is not at the optimal operating temperature, and the efficiency and rate of electrolysis are affected. These shortcomings are common problems faced by electrolyzers using conventional system structures and operating logics, which seriously affect the matching and utilization of wind power, photovoltaics and other power sources.

[0005] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0006] The embodiments of the present invention provide a control method, device and storage medium for an electrolytic hydrogen production system, so as to at least solve the technical problem of poor dynamic response capability of the alkaline electrolysis system.

[0007] According to one aspect of an embodiment of the present invention, a control method for an electrolytic hydrogen production system is provided, comprising: acquiring a power signal and a historical power curve of a power source; obtaining a predicted power curve based on the historical power curve and the power signal; and generating a target control strategy set based on the predicted power curve, the target control strategy set being used to control a target component to perform a target action, the target action comprising controlling an electrolytic cell to perform electrolysis or heating an alkaline solution in the electrolytic cell.

[0008] Optionally, before obtaining the power signal and the historical power curve of the power supply, the method includes: obtaining the temperature of the alkali solution in the electrolytic cell; and obtaining the power signal and the historical power curve of the power supply when it is determined that the alkali solution temperature is greater than or equal to a first preset temperature.

[0009] Optionally, based on the predicted power curve, a target control strategy set is generated, including: based on the predicted power curve, determining a predicted input power, the predicted input power being the input power of the electrolytic cell within a target time period; when it is determined that the predicted input power satisfies a first preset condition, generating a first target control strategy in the target control strategy set, the first target control strategy being at least used to control the electrolytic cell in the target component to perform electrolysis; when it is determined that the predicted input power satisfies a second preset condition, generating a second target control strategy in the target control strategy set, the second target control strategy being at least used to control the electrolytic cell in the target component to stop electrolysis, and controlling the heater in the target component to heat the alkali solution in the electrolytic cell.

[0010] Optionally, when it is determined that the predicted input power satisfies a first preset condition, a first target control strategy in the target control strategy set is generated, including: when it is determined that the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis and control the heater to stop heating.

[0011] Optionally, when it is determined that the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, including: obtaining the current alkali solution temperature in the electrolytic cell; when it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature, and the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, the first target control strategy being used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

[0012] Optionally, when it is determined that the predicted input power satisfies a third preset condition, a second target control strategy in the target control strategy set is generated, including: when it is determined that the predicted input power is less than the preset power, a second target control strategy is generated, and the second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

[0013] Optionally, after generating the second target control strategy in the target control strategy set, the method includes: obtaining the current alkali solution temperature in the electrolytic cell; and controlling the heater to stop heating when it is determined that the current alkali solution temperature is greater than a third preset temperature.

[0014] According to another aspect of an embodiment of the present invention, a control device for an electrolytic hydrogen production system is also provided, including: an acquisition module, the acquisition module is used to acquire a power signal and a historical power curve of a power source; a prediction module, the prediction module is used to obtain a predicted power curve based on the historical power curve and the power signal; and a generation module, the generation module is used to generate a target control strategy set based on the predicted power curve, and the target control strategy set is used to control a target component to perform a target action.

[0015] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] In an embodiment of the present invention, a predicted power curve is obtained based on a historical power curve and a power signal. By predicting the power curve, a target control strategy set is generated to control the hydrogen production system to produce hydrogen by electrolysis or to heat the solution in the electrolyzer, thereby achieving the purpose of selectively producing hydrogen for different input powers or maintaining the optimal operating temperature of the solution in the electrolyzer, thereby achieving the technical effect of improving the dynamic response capability of the hydrogen production system by electrolysis, and further solving the technical problem of poor dynamic response capability of the alkaline electrolysis system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a flow chart of an optional control method of an electrolysis hydrogen production system according to one embodiment of the present invention;

[0020] Figure 2 is a flow chart of an optional control method of an electrolysis hydrogen production system according to one embodiment of the present invention;

[0021] Figure 3 is a structural block diagram of a control device of an optional electrolysis hydrogen production system according to one embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of an optional electrolysis hydrogen production system according to one embodiment of the present invention.

[0023] The above drawings include the following reference numerals:

[0024] 1-1, high voltage transformer; 1-2, low voltage transformer;

[0025] 2. Rectifier transformer;

[0026] 3. Electrolyzer;

[0027] 4-1. Hydrogen separator; 4-2. Oxygen separator;

[0028] 5. Cooler;

[0029] 6. Cooling circulating water control valve of cooler;

[0030] 7. Lye pump;

[0031] 8. Heater;

[0032] 9. Temperature sensor;

[0033] 10. System controller;

[0034] 11. Upstream power supply power signal transmitter. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] According to an embodiment of the present invention, a control method embodiment of a hydrogen production system by electrolysis is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0038] The method embodiment can be executed in an electronic device or a similar computing device including a memory and a processor. Taking running on an electronic device as an example, the electronic device may include one or more processors (the processor may include but is not limited to a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP) chip, a microcontroller unit (MCU), a programmable logic device (Field Programmable Gate Array, FPGA), a neural network processor (Neural-network Processor Unit, NPU), a tensor processor (Tensor Processing Unit, TPU), an artificial intelligence (Artificial Intelligence, AI) type processor, etc.) and a memory for storing data. Optionally, the above-mentioned electronic device may also include a transmission device, an input and output device, and a display device for communication functions. It can be understood by those of ordinary skill in the art that the above-mentioned structural description is only illustrative, and it does not limit the structure of the above-mentioned electronic device. For example, the electronic device may also include more or fewer components than the above-mentioned structural description, or have a configuration different from the above-mentioned structural description.

[0039] The memory can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the control method of the electrolysis hydrogen production system in the embodiment of the present invention. The processor executes various functional applications and data processing by running the computer program stored in the memory, that is, realizing the control method of the electrolysis hydrogen production system. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include a memory remotely arranged relative to the processor, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0040] The transmission device is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly.

[0041] The display device may be, for example, a touch screen type liquid crystal display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display may enable a user to interact with a user interface of a mobile terminal. In some embodiments, the mobile terminal has a graphical user interface (GUI), and a user may interact with the GUI by finger contacts and / or gestures on a touch-sensitive surface, wherein the human-computer interaction functions here may optionally include the following interactions: creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital videos, playing digital music and / or web browsing, etc. The executable instructions for executing the above human-computer interaction functions are configured / stored in a computer program product or readable storage medium executable by one or more processors.

[0042] Figure 1 is a method according to an embodiment of the present invention, such as Figure 1 As shown, the method comprises the following steps:

[0043] Step S102: acquiring a power signal and a historical power curve of a power source.

[0044] In step S102, the real-time power signal of the current upstream power source (such as wind power, photovoltaic) is received from the power signal transmitter. At the same time, the system retrieves the historical power curve data under the same season, weather conditions and time period, which can be records of the past few days, weeks or months.

[0045] Step S104: obtaining a predicted power curve based on the historical power curve and the power signal.

[0046] In step S104, the power fluctuation trend in the future is predicted by using the historical power curve data and the current power signal through data analysis and machine learning algorithms. The prediction results should include key information such as the high and low changes in power, duration and frequency.

[0047] Step S106, based on the predicted power curve, a target control strategy set is generated, the target control strategy set is used to control the target component to perform a target action, the target action includes controlling the electrolytic cell to perform electrolysis or heating the alkali solution in the electrolytic cell.

[0048] In step S106, a set of control strategies is generated based on the predicted power curve to guide the operation of the electrolysis hydrogen production system. The target control strategy set may include the following modes:

[0049] Normal mode: When the predicted power is stable and above a certain threshold, the system uses electricity to electrolyze water to produce hydrogen.

[0050] Standby mode: When the predicted power is below the threshold or fluctuates frequently, the system uses the power to heat the alkali solution and maintain the temperature of the electrolyzer so that it can be started at any time.

[0051] The target control strategy set ensures that the system can flexibly respond to upstream power fluctuations, avoid safety risks of electrolyzer operation at low or unstable power, and maximize the use of power resources.

[0052] Through steps S102 to S106, the electrolysis hydrogen production system can work more efficiently with the renewable energy power generation system, improve energy utilization efficiency, reduce energy loss during shutdown and startup, and ensure safe and stable operation of the system.

[0053] In this embodiment, a predicted power curve is obtained based on a historical power curve and a power signal. By predicting the power curve, a target control strategy set is generated to control the hydrogen production system to produce hydrogen by electrolysis or to heat the solution in the electrolyzer, thereby achieving the purpose of selectively producing hydrogen for different input powers or maintaining the optimal operating temperature of the solution in the electrolyzer, thereby achieving the technical effect of improving the dynamic response capability of the hydrogen production system by electrolysis, and further solving the technical problem of poor dynamic response capability of the alkaline electrolysis system.

[0054] As an optional implementation manner, before obtaining the power signal and the historical power curve of the power supply, the method includes:

[0055] Step S201, obtaining the temperature of the alkaline solution in the electrolytic cell.

[0056] In step S201, before starting power signal acquisition and historical power curve analysis, the alkali solution temperature in the electrolytic cell is first read, because the operating efficiency and safety of the electrolytic cell are highly dependent on the temperature of the alkali solution. Too low a temperature will reduce the electrolysis reaction rate, while too high a temperature may cause system instability or even safety problems.

[0057] Step S202: when it is determined that the temperature of the alkali solution is greater than or equal to the first preset temperature, a power signal and a historical power curve of the power supply are obtained.

[0058] In step S202, the first preset temperature is a safety and efficiency threshold to ensure that the electrolyzer is within a suitable operating temperature range. When the lye temperature reaches or exceeds this threshold, the system controller will continue to perform subsequent power signal acquisition and historical data analysis to generate a predicted power curve and corresponding control strategy.

[0059] Based on steps S201 to S202, it is helpful to prevent power prediction and control adjustment under inappropriate temperature conditions, ensuring that the operation of the electrolyzer is safe and efficient. Under low temperature conditions, the heater is started first to heat the alkali solution to a first preset temperature, and then the power signal and historical power curve acquisition stage is entered, thereby avoiding direct electrolysis operation or power prediction control when the temperature is lower than the ideal threshold, reducing potential operation risks and energy waste.

[0060] Optionally, based on the predicted power curve, a target control strategy set is generated, including:

[0061] Step S211, based on the predicted power curve, determine the predicted input power, the predicted input power is the input power of the electrolytic cell within the target time period.

[0062] In step S211, the predicted power curve reflects the expected power input of the electrolyzer in the future target time period. By analyzing this curve, the system can predict the power level that the electrolyzer will receive, which is the basis for generating a control strategy.

[0063] Step S212, when it is determined that the predicted input power meets the first preset condition, a first target control strategy in the target control strategy set is generated, and the first target control strategy is at least used to control the electrolytic cell in the target component to perform electrolysis.

[0064] In step S212, the first preset condition is set as the minimum power requirement to ensure the safe and stable operation of the electrolyzer within a certain prediction time. If the predicted input power is higher than or equal to the minimum power requirement within a certain prediction time, a first target control strategy will be generated to ensure that the electrolyzer can perform normal water electrolysis hydrogen production operation. At the same time, the current intensity or other parameters of the electrolyzer may be adjusted as needed to optimize the hydrogen production efficiency.

[0065] Specifically, in a preferred embodiment of the present application, the first preset condition can be set to that within a time range of more than fifteen minutes in the future, the power output power of the power supply is higher than 30% of the rated power of the electrolytic cell.

[0066] Step S213, when it is determined that the predicted input power meets the second preset condition, a second target control strategy in the target control strategy set is generated, and the second target control strategy is at least used to control the electrolytic cell in the target component to stop electrolysis and control the heater in the target component to heat the alkali solution in the electrolytic cell.

[0067] In step S213, the second preset condition may be set to a power level lower than the first preset condition within a certain predicted time, which means that the input power may not be sufficient to support the normal operation of the electrolyzer. In this case, the system will generate a second target control strategy to control the electrolyzer to stop the electrolysis operation and use the available power to heat the alkali solution in the electrolyzer to maintain the system within the optimal operating temperature range and prepare for the electrolyzer to resume operation at any time.

[0068] Specifically, in a preferred embodiment of the present application, the second preset condition can be set to be that within the next 15 minutes, there is a probability of more than 80% that the input power will be lower than 30% of the rated power of the electrolyzer for more than 70% of the time.

[0069] Based on steps S211 to S213, by predicting future power input, the operation mode of the electrolytic hydrogen production system is planned in advance to ensure that the system can flexibly respond to fluctuating power sources such as wind power and photovoltaic power supply, which not only ensures safety but also improves energy utilization efficiency and system response speed. In actual applications, the switching between the first target control strategy and the second target control strategy will be automatically completed by the system controller to ensure that the electrolyzer produces hydrogen efficiently when the input power is sufficient, and maintains the system in a hot standby state by heating the alkali solution when the input power is insufficient.

[0070] Optionally, when it is determined that the predicted input power satisfies the first preset condition, generating a first target control strategy in the target control strategy set includes:

[0071] Step S221, when it is determined that the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis and control the heater to stop heating.

[0072] In step S221, the preset power refers to the minimum power threshold at which the electrolyzer can operate safely and efficiently. When it is predicted that the input power in the future target time period will remain at or above this level, it is considered that there is sufficient electricity to support the normal operation of the electrolyzer. The first target control strategy is used to control the electrolyzer to perform electrolysis and control the heater to stop heating. This means that the system will switch to hydrogen production mode (i.e., the normal mode in step S106), using the predicted sufficient electricity to drive the electrolyzer to electrolyze water to produce hydrogen. At the same time, due to the heat generated during the operation of the electrolyzer and the input power is sufficient to maintain the system operating temperature, the heater is stopped to avoid unnecessary energy consumption and improve the energy efficiency of the entire system.

[0073] Based on step S221, when the power supply is sufficient, the system can be quickly adjusted to an efficient hydrogen production state, while avoiding the continued operation of the heater when heating is not required, thereby reducing energy waste and improving the overall operating economy and environmental performance of the system. This is an important supplement to the intelligent control of the electrolysis hydrogen production system, which helps it better adapt to the volatility of renewable energy power supply and achieve more stable and efficient hydrogen production.

[0074] Optionally, when it is determined that the predicted input power is greater than or equal to the preset power, generating a first target control strategy includes:

[0075] Step S222, obtaining the current alkali solution temperature in the electrolytic cell.

[0076] In step S222, before the system is ready to control the electrolytic cell to enter the electrolysis mode, it will first check the current temperature of the alkali solution to ensure that the temperature of the alkali solution is high enough, or at least within the appropriate temperature range required for electrolysis.

[0077] Step S223, when it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature and the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

[0078] In step S223, the dual conditions based on the above temperature and power prediction are carried out. The second preset temperature is usually set within the optimal operating temperature range of the electrolytic cell to ensure the efficiency and safety of the electrolysis process. If the current alkali solution temperature meets or exceeds this set value, and the predicted input power is also sufficient (i.e., greater than or equal to the preset power), the system will generate a first target control strategy. Wherein, the second preset temperature in step S223 is greater than the first preset temperature in step S202.

[0079] Based on steps S221 to S223, it is ensured that the hydrogen production system can produce hydrogen efficiently and safely by electrolysis when there is sufficient electricity and the alkali solution temperature is suitable. At the same time, through dynamic temperature management, the system is maintained in the optimal operating state to avoid energy waste and possible safety hazards.

[0080] Optionally, when it is determined that the predicted input power satisfies the third preset condition, generating a second target control strategy in the target control strategy set includes:

[0081] Step S231, when it is determined that the predicted input power is less than the preset power, a second target control strategy is generated, and the second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

[0082] In step S231, the preset power refers to the minimum power input threshold required for the safe and efficient operation of the electrolyzer. In the case of insufficient input power, the operation of the electrolyzer will become inefficient and may even cause safety problems. Therefore, the system will control the electrolyzer to stop water electrolysis, avoid the inefficient generation of hydrogen and oxygen, reduce the waste of electric energy, and prevent the possible risk of hydrogen and oxygen crosstalk. If the electrolyzer stops running, there is no need to continue cooling. Stopping the cooler can save energy and reduce operating costs. The system will use the remaining electricity to heat the alkali solution, maintain the alkali solution and system equipment and pipelines within a suitable temperature range, ensure that the electrolyzer can start quickly when the power is restored, reduce heat loss and time during the startup process, and improve the overall response speed and operating efficiency of the system.

[0083] Specifically, in a preferred embodiment of the present application, the second preset condition can be set to be that within the next 15 minutes, there is a probability of more than 80% that the input power will be lower than 30% of the rated power of the electrolyzer for more than 70% of the time.

[0084] Based on step S231, when the input power is insufficient, the system can quickly adjust to the standby mode in step S106, maintain the temperature of the electrolyzer by heating, and prepare for a quick restart when the power is restored, while avoiding unnecessary energy consumption during the cooling process. This dynamic adjustment strategy helps the system better adapt to the volatility of renewable energy power supply and ensures that the system can maintain flexibility and economy under different power input conditions.

[0085] Optionally, after generating the second target control strategy in the target control strategy set, the method further includes:

[0086] Step S232, obtaining the current alkali solution temperature in the electrolytic cell.

[0087] In step S232, after executing the second target control strategy of stopping electrolysis and heating the alkali solution, the actual temperature of the alkali solution needs to be continuously monitored to ensure that the temperature of the alkali solution does not exceed a range that is beneficial to the operation of the system.

[0088] Step S233: When it is determined that the current alkali solution temperature is greater than the third preset temperature, the heater is controlled to stop heating.

[0089] In step S233, the third preset temperature is the upper limit of the lye temperature set under the condition of stopping electrolysis to prevent increased energy consumption, system aging or potential safety risks caused by excessive temperature. If the monitored lye temperature exceeds this preset temperature, the system will automatically stop the heater to prevent the temperature from continuing to rise.

[0090] Specifically, the third preset temperature is equal to or slightly higher than the second preset temperature in step S223.

[0091] Based on steps S231 to S233, when the power forecast shows that the input power is low, the temperature of the alkali solution can be maintained within an appropriate range through the heater, so that the electrolyzer can be started at any time. At the same time, once the alkali solution temperature reaches or exceeds the third preset temperature, the system will stop heating in time to avoid unnecessary energy consumption and potential risk of over-temperature, ensuring the economy and safety of the system operation. This sophisticated temperature control strategy is an important means for the system to maintain efficient and stable operation under the condition of fluctuating renewable energy power supply.

[0092] Figure 2 FIG. 1 is a flow chart of a control method of another electrolytic hydrogen production system according to one embodiment of the present invention. Figure 2 As shown, the method comprises the following steps:

[0093] Step S201, obtaining the temperature of the alkaline solution in the electrolytic cell.

[0094] Step S202: when it is determined that the temperature of the alkali solution is greater than or equal to the first preset temperature, a power signal and a historical power curve of the power supply are obtained.

[0095] Step S211, based on the predicted power curve, determine the predicted input power, the predicted input power is the input power of the electrolytic cell within the target time period.

[0096] Step S212, when it is determined that the predicted input power meets the first preset condition, a first target control strategy in the target control strategy set is generated, and the first target control strategy is at least used to control the electrolytic cell in the target component to perform electrolysis.

[0097] Step S213, when it is determined that the predicted input power meets the second preset condition, a second target control strategy in the target control strategy set is generated, and the second target control strategy is at least used to control the electrolytic cell in the target component to stop electrolysis and control the heater in the target component to heat the alkali solution in the electrolytic cell.

[0098] Step S221, when it is determined that the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis and control the heater to stop heating.

[0099] Step S222, obtaining the current alkali solution temperature in the electrolytic cell.

[0100] Step S223, when it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature and the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

[0101] Step S231, when it is determined that the predicted input power is less than the preset power, a second target control strategy is generated, and the second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

[0102] Step S232, obtaining the current alkali solution temperature in the electrolytic cell.

[0103] Step S233: When it is determined that the current alkali solution temperature is greater than the third preset temperature, the heater is controlled to stop heating.

[0104] Based on the above steps S201 to S233, in an embodiment of the present invention, a method of obtaining a predicted power curve based on a historical power curve and a power signal is adopted. By predicting the power curve, a target control strategy set is generated to control the hydrogen production system for electrolysis hydrogen production or heating the solution in the electrolyzer, thereby achieving the purpose of selectively producing hydrogen for different input powers or maintaining the optimal operating temperature of the solution in the electrolyzer, thereby achieving the technical effect of improving the dynamic response capability of the hydrogen production system by electrolysis, and further solving the technical problem of poor dynamic response capability of the alkaline electrolysis system.

[0105] In this embodiment, the real-time and historical data of the upstream power supply are fully utilized, and a predictive control strategy is used to enable the hydrogen electrolysis system to flexibly respond to power fluctuations. It can not only produce hydrogen efficiently at high power, but also maintain the system temperature at low power, reduce startup time, and ensure safe operation.

[0106] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0107] In the embodiment of the present invention, a control device for an electrolytic hydrogen production system is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0108] Figure 3 FIG. 1 is a structural block diagram of a control device for an electrolytic hydrogen production system according to one embodiment of the present invention. Figure 3 As shown, the device comprises:

[0109] An acquisition module 301 is used to acquire a power signal and a historical power curve of a power source;

[0110] A prediction module 302, the prediction module 302 is used to obtain a predicted power curve based on the historical power curve and the power signal;

[0111] The generation module 303 is used to generate a target control strategy set based on the predicted power curve. The target control strategy set is used to control the target component to perform a target action. The target action includes controlling the electrolytic cell to perform electrolysis or heating the alkali solution in the electrolytic cell.

[0112] Optionally, the acquisition module 301 is further used to acquire the temperature of the alkali solution in the electrolytic cell; when it is determined that the temperature of the alkali solution is greater than or equal to the first preset temperature, the power signal and the historical power curve of the power supply are acquired.

[0113] Optionally, the generation module 303 is also used to determine the predicted input power based on the predicted power curve, where the predicted input power is the input power of the electrolytic cell within the target time period; when it is determined that the predicted input power satisfies a first preset condition, a first target control strategy in the target control strategy set is generated, and the first target control strategy is at least used to control the electrolytic cell in the target component to perform electrolysis; when it is determined that the predicted input power satisfies a second preset condition, a second target control strategy in the target control strategy set is generated, and the second target control strategy is at least used to control the electrolytic cell in the target component to stop electrolysis, and control the heater in the target component to heat the alkali solution in the electrolytic cell.

[0114] Optionally, the acquisition module 301 is also used to obtain the current alkali solution temperature in the electrolytic cell; the generation module 303 is also used to generate a first target control strategy when it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature and the predicted input power is greater than or equal to the preset power. The first target control strategy is used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

[0115] Optionally, the generation module 303 is also used to generate a second target control strategy when it is determined that the predicted input power is less than the preset power. The second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

[0116] Optionally, the acquisition module 301 is further used to acquire the current alkali solution temperature in the electrolytic cell; the generation module 303 is further used to control the heater to stop heating when it is determined that the current alkali solution temperature is greater than a third preset temperature.

[0117] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0118] According to one embodiment of the present invention, there is also provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the control method of the electrolysis hydrogen production system is executed when the program is running.

[0119] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0120] Step S102: acquiring a power signal and a historical power curve of a power source.

[0121] Step S104: obtaining a predicted power curve based on the historical power curve and the power signal.

[0122] Step S106, based on the predicted power curve, a target control strategy set is generated, the target control strategy set is used to control the target component to perform a target action, the target action includes controlling the electrolytic cell to perform electrolysis or heating the alkali solution in the electrolytic cell.

[0123] According to one embodiment of the present invention, a computer-readable storage medium is further provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program runs, the device where the storage medium is located is controlled to execute the above-mentioned control method of the electrolysis hydrogen production system.

[0124] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0125] Step S102: acquiring a power signal and a historical power curve of a power source.

[0126] Step S104: obtaining a predicted power curve based on the historical power curve and the power signal.

[0127] Step S106, based on the predicted power curve, a target control strategy set is generated, the target control strategy set is used to control the target component to perform a target action, the target action includes controlling the electrolytic cell to perform electrolysis or heating the alkali solution in the electrolytic cell.

[0128] Optionally, the above storage medium may also be configured to store a computer program for performing the following steps:

[0129] Step S201, obtaining the temperature of the alkaline solution in the electrolytic cell.

[0130] Step S202: when it is determined that the temperature of the alkali solution is greater than or equal to the first preset temperature, a power signal and a historical power curve of the power supply are obtained.

[0131] Step S211, based on the predicted power curve, determine the predicted input power, the predicted input power is the input power of the electrolytic cell within the target time period.

[0132] Step S212, when it is determined that the predicted input power meets the first preset condition, a first target control strategy in the target control strategy set is generated, and the first target control strategy is at least used to control the electrolytic cell in the target component to perform electrolysis.

[0133] Step S213, when it is determined that the predicted input power meets the second preset condition, a second target control strategy in the target control strategy set is generated, and the second target control strategy is at least used to control the electrolytic cell in the target component to stop electrolysis and control the heater in the target component to heat the alkali solution in the electrolytic cell.

[0134] Step S221, when it is determined that the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis and control the heater to stop heating.

[0135] Step S222, obtaining the current alkali solution temperature in the electrolytic cell.

[0136] Step S223, when it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature and the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

[0137] Step S231, when it is determined that the predicted input power is less than the preset power, a second target control strategy is generated, and the second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

[0138] Step S232, obtaining the current alkali solution temperature in the electrolytic cell.

[0139] Step S233: When it is determined that the current alkali solution temperature is greater than the third preset temperature, the heater is controlled to stop heating.

[0140] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0141] According to one embodiment of the present invention, a computer program product is also provided, including a computer program, and when the computer program is executed by a processor, the control method of the hydrogen production system by electrolysis is implemented.

[0142] Optionally, in this embodiment, the computer program product may be configured as a computer program for executing the following steps:

[0143] Step S102: acquiring a power signal and a historical power curve of a power source.

[0144] Step S104: obtaining a predicted power curve based on the historical power curve and the power signal.

[0145] Step S106, based on the predicted power curve, a target control strategy set is generated, the target control strategy set is used to control the target component to perform a target action, the target action includes controlling the electrolytic cell to perform electrolysis or heating the alkali solution in the electrolytic cell.

[0146] Optionally, in this embodiment, the computer program product may also be configured as a computer program for executing the following steps:

[0147] Step S201, obtaining the temperature of the alkaline solution in the electrolytic cell.

[0148] Step S202: when it is determined that the temperature of the alkali solution is greater than or equal to the first preset temperature, a power signal and a historical power curve of the power supply are obtained.

[0149] Step S211, based on the predicted power curve, determine the predicted input power, the predicted input power is the input power of the electrolytic cell within the target time period.

[0150] Step S212, when it is determined that the predicted input power meets the first preset condition, a first target control strategy in the target control strategy set is generated, and the first target control strategy is at least used to control the electrolytic cell in the target component to perform electrolysis.

[0151] Step S213, when it is determined that the predicted input power meets the second preset condition, a second target control strategy in the target control strategy set is generated, and the second target control strategy is at least used to control the electrolytic cell in the target component to stop electrolysis and control the heater in the target component to heat the alkali solution in the electrolytic cell.

[0152] Step S221, when it is determined that the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis and control the heater to stop heating.

[0153] Step S222, obtaining the current alkali solution temperature in the electrolytic cell.

[0154] Step S223, when it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature and the predicted input power is greater than or equal to the preset power, a first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

[0155] Step S231, when it is determined that the predicted input power is less than the preset power, a second target control strategy is generated, and the second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

[0156] Step S232, obtaining the current alkali solution temperature in the electrolytic cell.

[0157] Step S233: When it is determined that the current alkali solution temperature is greater than the third preset temperature, the heater is controlled to stop heating.

[0158] Combination Figure 4 As shown, in a specific embodiment of the present application, a hydrogen production system by electrolysis is also provided, which is controlled by the control method of the hydrogen production system by electrolysis in the above implementation.

[0159] Specifically, the electrolysis hydrogen production system includes: a high-voltage transformer 1-1, a low-voltage transformer 1-2, a rectifier transformer 2, an electrolyzer 3, a hydrogen separator 4-1, an oxygen separator 4-2, a cooler 5, a cooler cooling circulating water control valve 6, an alkali liquid pump 7, a heater 8, a temperature sensor 9, a system controller 10 and an upstream power supply power signal transmitter 11. The rectifier transformer 2 is electrically connected to the high-voltage transformer 1-1 and the low-voltage transformer 1-2, respectively. The rectifier transformer 2 is electrically connected to the electrolyzer 3, and the electrolyzer 3 is connected to the hydrogen separator 4-1 and the oxygen separator 4-2, respectively. The temperature sensor 9 is connected to the electrolyzer 3, and the temperature sensor 9 is used to detect the temperature of the solution in the electrolyzer 3. The hydrogen separator 4-1 and the oxygen separator 4-2 are connected to the electrolyzer 3 through a thermostatic pipeline. The thermostatic pipeline is provided with a cooler 5, an alkali liquid pump 7 and a heater 8. The cooler 5 is connected to the cooling source through a cooler cooling circulating water control valve 6. The heater 8 is electrically connected to the low-voltage transformer 1-2. The system controller 10 is electrically connected to the high-voltage transformer 1-1, the low-voltage transformer 1-2, the cooler cooling circulating water control valve 6, and the upstream power supply power signal transmitter 11. The electrical connection includes a wired connection and a wireless connection.

[0160] In a specific embodiment of the present application, the alkaline electrolyzer 3 in the electrolytic hydrogen production system has a power of 1 MW and a hydrogen production capacity of 200 Nm 3 / h, with 30% potassium hydroxide aqueous solution as electrolyte; the electrolysis system is divided into several typical modes for hydrogen production operation. The upstream power supply is the power directly transmitted by the wind power station, and the power curve of the power supply is transmitted to the system controller 10 through the power signal transmitter 11. The electrolysis hydrogen production system has the following modes:

[0161] (1) Startup mode: Under the condition of cold start of the system, the system controller 10 preferentially uses electricity to preheat the system. After the alkali solution pump 7 is started, the power is allocated to the low-voltage transformer 1-2, the heater 8 is started, the alkali solution is heated, and the circulating alkali solution temperature reaches 60°C. At this time, the cooler cooling circulation water control valve 6 is kept closed, and the alkali solution cooler 5 does not cool the alkali solution. After the alkali solution temperature reaches 60°C, the system circulates for five minutes. The system controller 10 calculates based on the power curve transmitted by the upstream power supply power signal transmitter 11 and the previous local full-time power curve of the same season, similar weather conditions, and the same period, and predicts the subsequent trend of the electrolytic cell power curve change.

[0162] (2) Normal mode: If the power output of the power supply is higher than 30% of the rated power of the electrolyzer within a time range of more than 15 minutes in the future, the electrolysis hydrogen production system based on power prediction control uses electricity to electrolyze water. The system controller 10 allocates power to the rectifier transformer 2, starts the electrolyzer 3 to perform water electrolysis, and disconnects the transformer 1-2 at the same time. The heater 8 is turned off, and the generated hydrogen and oxygen enter the hydrogen separator 4-1 and the oxygen separator 4-2 together with the alkali solution. According to the alkali solution temperature measured by the temperature sensor 9, the cooler cooling circulating water control valve 6 is opened or closed. If the alkali solution temperature is high and reaches the trigger temperature of 65°C, the cooler cooling circulating water control valve 6 is opened to introduce the cold source of the alkali solution cooler 5 to cool the alkali solution so that the temperature of the alkali solution entering the electrolyzer is maintained at 65°C. The alkali solution is kept circulating in the system by the alkali solution pump 7.

[0163] (3) Standby mode: If, according to the prediction, in the next 15 minutes, the input power has a probability of more than 80% and more than 70% of the time is lower than 30% of the rated power of the electrolyzer, the power supply will not be used to electrolyze water to produce hydrogen, but the alkali solution pump 7 will be kept running to circulate the alkali solution in the electrolyzer. At the same time, the system controller 10 uses the power generated during the period to distribute it to the low-voltage transformer 1-2, start the heater 8, heat the alkali solution, and make the circulating alkali solution temperature higher than 60°C but not higher than 80°C. At this time, keep the cooler cooling circulation water control valve 6 closed, and the alkali solution cooler 5 will not cool the alkali solution. When the input power increases and can be stably maintained for more than 15 minutes with a probability of more than 80%, switch to the normal mode.

[0164] In another specific embodiment of the present application, the alkaline electrolyzer 3 in the system has a power of 5MW and a hydrogen production capacity of 1000Nm 3 / h, with 35% potassium hydroxide aqueous solution as electrolyte; the electrolysis system is divided into several typical modes for hydrogen production operation. The upstream power supply is the power directly sent by the photovoltaic power station, and the power curve of the power supply is transmitted to the system controller 10 through the power signal transmitter 11.

[0165] (1) Startup mode: Under the condition of cold start of the system, the system controller 10 preferentially uses electricity to preheat the system. After the alkali solution pump 7 is started, the power is allocated to the low-voltage transformer 1-2, the heater 8 is started, the alkali solution is heated, and the circulating alkali solution temperature reaches 55°C. At this time, the cooler cooling circulating water control valve 6 is kept closed, and the alkali solution cooler 5 does not cool the alkali solution. After the alkali solution temperature reaches 55°C, the system circulates for 3 minutes, and the power curve transmitted by the upstream power supply power signal transmitter 11 of the system controller 10 and the full-time power curve of the previous local season, similar weather conditions, and the same period are calculated to predict the subsequent change trend of the electrolytic cell power curve.

[0166] (2) Normal mode: If the power output of the power supply is higher than 25% of the rated power of the electrolytic cell within a time range of more than 10 minutes in the future, the water is electrolyzed by electricity. The system controller 10 allocates power to the rectifier transformer 2, starts the electrolytic cell 3 to perform water electrolysis, and disconnects the transformer 1-2 at the same time. The heater 8 is turned off, and the generated hydrogen and oxygen enter the hydrogen separator 4-1 and the oxygen separator 4-2 together with the alkali solution. The control valve 6 is opened or closed according to the alkali solution temperature measured by the temperature sensor 9. If the alkali solution temperature is high and reaches the trigger temperature of 55°C, the cooler cooling circulating water control valve 6 is opened to introduce the cold source of the alkali solution cooler 5 to cool the alkali solution so that the temperature of the alkali solution entering the electrolytic cell is maintained at 55°C. The alkali solution is kept circulating in the system by the alkali solution pump 7.

[0167] (3) Standby mode: If, according to the prediction, in the next 10 minutes, the input power has a probability of more than 80% and more than 80% of the time is lower than 25% of the rated power of the electrolyzer, the power supply will not be used to electrolyze water to produce hydrogen, but the alkali solution pump 7 will be kept running to circulate the alkali solution in the electrolyzer, and at the same time, the system controller 10 will use the power generated during the period to distribute it to the low-voltage transformer 1-2, start the heater 8, heat the alkali solution, and make the circulating alkali solution temperature higher than 55°C but not higher than 80°C. At this time, the cooler cooling circulating water control valve 6 is kept closed, and the alkali solution cooler 5 does not cool the alkali solution. When the input power increases and can be stably maintained for more than 10 minutes with a probability of more than 80%, it will switch to the normal mode.

[0168] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0169] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0170] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0171] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0172] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0173] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A control method for an electrolytic hydrogen production system, characterized in that: include: Obtain the power signal and historical power curve of the power supply; Based on the historical power curve and the power signal, obtaining a predicted power curve; Based on the predicted power curve, a target control strategy set is generated, wherein the target control strategy set is used to control the target component to perform a target action, wherein the target action includes controlling the electrolytic cell to perform electrolysis or heating the alkali solution in the electrolytic cell.

2. The method according to claim 1, characterized in that Before acquiring the power signal and the historical power curve of the power supply, the method includes: Obtaining the temperature of the alkali solution in the electrolytic cell; When it is determined that the temperature of the alkali solution is greater than or equal to the first preset temperature, the power signal and the historical power curve of the power supply are acquired.

3. The method according to claim 1 or 2, characterized in that: Based on the predicted power curve, a target control strategy set is generated, including: Based on the predicted power curve, determining a predicted input power, wherein the predicted input power is the input power of the electrolytic cell within a target time period; In the case where it is determined that the predicted input power satisfies the first preset condition, generating a first target control strategy in the target control strategy set, wherein the first target control strategy is at least used to control the electrolytic cell in the target component to perform electrolysis; When it is determined that the predicted input power satisfies the second preset condition, a second target control strategy in the target control strategy set is generated, and the second target control strategy is at least used to control the electrolytic cell in the target component to stop electrolysis, and control the heater in the target component to heat the alkali solution in the electrolytic cell.

4. The method according to claim 3, characterized in that In the case where it is determined that the predicted input power satisfies the first preset condition, generating the first target control strategy in the target control strategy set includes: When it is determined that the predicted input power is greater than or equal to the preset power, the first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis and control the heater to stop heating.

5. The method according to claim 4, characterized in that In the case where it is determined that the predicted input power is greater than or equal to the preset power, generating the first target control strategy includes: Obtaining the current alkali solution temperature in the electrolytic cell; When it is determined that the current alkali solution temperature is greater than or equal to the second preset temperature, and the predicted input power is greater than or equal to the preset power, the first target control strategy is generated, and the first target control strategy is used to control the electrolytic cell to perform electrolysis, control the heater to stop heating, and control the alkali solution cooler in the target component to cool.

6. The method according to claim 3, characterized in that When it is determined that the predicted input power satisfies the third preset condition, generating the second target control strategy in the target control strategy set includes: When it is determined that the predicted input power is less than the preset power, the second target control strategy is generated, and the second target control strategy is used to control the electrolytic cell to stop electrolysis, control the alkali liquid cooler in the target component to stop cooling, and control the heater in the target component to heat.

7. The method according to claim 6, characterized in that After generating the second target control strategy in the target control strategy set, the method includes: Obtaining the current alkali solution temperature in the electrolytic cell; When it is determined that the current alkali solution temperature is greater than the third preset temperature, the heater is controlled to stop heating.

8. A control device for an electrolytic hydrogen production system, characterized in that: include: An acquisition module, the acquisition module is used to acquire a power signal and a historical power curve of a power supply; A prediction module, the prediction module is used to obtain a predicted power curve based on the historical power curve and the power signal; A generation module is used to generate a target control strategy set based on a predicted power curve, and the target control strategy set is used to control a target component to perform a target action.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 7.

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