Hydrogen production method and device, computer equipment and readable storage medium

Abstract

The invention relates to a hydrogen production method and device, computer equipment and a readable storage medium. The method is applied to an electro-hydrogen coupling system, and the electro-hydrogen coupling system comprises an electrolytic bath; the method comprises the following steps: acquiring working current information and working voltage information of the electrolytic cell when it is detected that the electrolytic cell is in a power balance state; detecting the initial hydrogen production rate of the electrolytic cell based on the working current information, and detecting the energy conversion efficiency of the electro-hydrogen coupling system based on the initial hydrogen production rate, the working voltage information and the working current information; according to the energy conversion efficiency and the electrical resource attribute information of the electricity-hydrogen coupling system under the current working condition, the initial hydrogen production rate is corrected, and the actual hydrogen production rate is obtained; based on the electrical resource attribute information and the actual hydrogen production rate, generating hydrogen production control information when the hydrogen production consumption resource quantity of the electricity-hydrogen coupling system is minimum; and controlling the electro-hydrogen coupling system to execute hydrogen production operation based on the hydrogen production control information. The method can be used for reliably producing hydrogen.

Description

Technical Field

[0001] This application relates to the technical field of hydrogen processing, and particularly to a hydrogen production method, device, computer device, and readable storage medium. Background Art

[0002] In the context of the increasing depletion of traditional fossil energy, the transformation of energy utilization towards clean and low-carbon directions and the acceleration of deep decarbonization in high-carbon emission industries have become the social consensus. Therefore, hydrogen, as a clean energy, has become a commonly used resource in production and life.

[0003] Currently, hydrogen production is generally achieved through an electro-hydrogen coupling system. Among them, the electro-hydrogen coupling system can achieve flexible conversion between electrical energy and hydrogen energy, and through technical means such as electrolytic water hydrogen production and fuel cell power generation, it can realize the conversion, transmission, and storage of energy. The electro-hydrogen coupling system can play an important role in aspects such as wind and light accommodation, flexible operation, and low-carbon emission reduction. However, the current hydrogen production methods have the problem of being unreliable. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide a reliable hydrogen production method, device, computer device, computer-readable storage medium, and computer program product.

[0005] In a first aspect, this application provides a hydrogen production method, including:

[0006] When it is detected that the electrolytic cell is in a power balance state, obtain the working current information and working voltage information of the electrolytic cell;

[0007] Based on the working current information, detect the initial hydrogen production rate of the electrolytic cell, and based on the initial hydrogen production rate, working voltage information, and working current information, detect the energy conversion efficiency of the electro-hydrogen coupling system;

[0008] According to the energy conversion efficiency and the electrical resource attribute information of the electro-hydrogen coupling system under the current working condition, correct the initial hydrogen production rate to obtain the actual hydrogen production rate;

[0009] Based on the electrical resource attribute information and the actual hydrogen production rate, generate hydrogen production control information when the hydrogen production resource consumption of the electro-hydrogen coupling system is minimized, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electro-hydrogen coupling system with the electrical resource attribute information;

[0010] Based on the hydrogen production control information, control the electro-hydrogen coupling system to perform hydrogen production operations.

[0011] In a second aspect, this application also provides a hydrogen production device, including:

[0012] An electrolyzer working information acquisition module, configured to acquire the working current information and working voltage information of the electrolyzer when it is detected that the electrolyzer is in a power balance state;

[0013] An energy conversion efficiency detection module, configured to detect the initial hydrogen production rate of the electrolyzer based on the working current information, and detect the energy conversion efficiency of the electrolysis-hydrogen coupling system based on the initial hydrogen production rate, the working voltage information and the working current information;

[0014] A hydrogen production rate correction module, configured to correct the initial hydrogen production rate according to the energy conversion efficiency and the electrical resource attribute information of the electrolysis-hydrogen coupling system under the current working condition to obtain the actual hydrogen production rate;

[0015] A hydrogen production control information generation module, configured to generate hydrogen production control information when the hydrogen production consumption resources of the electrolysis-hydrogen coupling system are minimized based on the electrical resource attribute information and the actual hydrogen production rate, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electrolysis-hydrogen coupling system with the electrical resource attribute information;

[0016] A hydrogen production control module, configured to control the electrolysis-hydrogen coupling system to perform hydrogen production operations based on the hydrogen production control information.

[0017] In a third aspect, the present application further provides a computer device, including a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0018] When it is detected that the electrolyzer is in a power balance state, acquire the working current information and working voltage information of the electrolyzer;

[0019] Based on the working current information, detect the initial hydrogen production rate of the electrolyzer, and detect the energy conversion efficiency of the electrolysis-hydrogen coupling system based on the initial hydrogen production rate, the working voltage information and the working current information;

[0020] According to the energy conversion efficiency and the electrical resource attribute information of the electrolysis-hydrogen coupling system under the current working condition, correct the initial hydrogen production rate to obtain the actual hydrogen production rate;

[0021] Based on the electrical resource attribute information and the actual hydrogen production rate, generate hydrogen production control information when the hydrogen production consumption resources of the electrolysis-hydrogen coupling system are minimized, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electrolysis-hydrogen coupling system with the electrical resource attribute information;

[0022] Based on the hydrogen production control information, control the electrolysis-hydrogen coupling system to perform hydrogen production operations.

[0023] In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0024] When it is detected that the electrolyzer is in a power balance state, obtain the working current information and working voltage information of the electrolyzer;

[0025] Based on the working current information, detect the initial hydrogen production rate of the electrolyzer, and based on the initial hydrogen production rate, working voltage information and working current information, detect the energy conversion efficiency of the electrolysis-hydrogen coupling system;

[0026] According to the energy conversion efficiency and the electrical resource attribute information of the electrolysis-hydrogen coupling system under the current working conditions, correct the initial hydrogen production rate to obtain the actual hydrogen production rate;

[0027] Based on the electrical resource attribute information and the actual hydrogen production rate, generate hydrogen production control information when the hydrogen production resource consumption of the electrolysis-hydrogen coupling system is minimized, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electrolysis-hydrogen coupling system with the electrical resource attribute information;

[0028] Based on the hydrogen production control information, control the electrolysis-hydrogen coupling system to perform hydrogen production operations.

[0029] In a fifth aspect, the present application also provides a computer program product, including a computer program, which when executed by a processor implements the following steps:

[0030] When it is detected that the electrolyzer is in a power balance state, obtain the working current information and working voltage information of the electrolyzer;

[0031] Based on the working current information, detect the initial hydrogen production rate of the electrolyzer, and based on the initial hydrogen production rate, working voltage information and working current information, detect the energy conversion efficiency of the electrolysis-hydrogen coupling system;

[0032] According to the energy conversion efficiency and the electrical resource attribute information of the electrolysis-hydrogen coupling system under the current working conditions, correct the initial hydrogen production rate to obtain the actual hydrogen production rate;

[0033] Based on the electrical resource attribute information and the actual hydrogen production rate, generate hydrogen production control information when the hydrogen production resource consumption of the electrolysis-hydrogen coupling system is minimized, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electrolysis-hydrogen coupling system with the electrical resource attribute information;

[0034] Based on the hydrogen production control information, control the electrolysis-hydrogen coupling system to perform hydrogen production operations.

[0035] In the above hydrogen production method, device, computer device, computer-readable storage medium, and computer program product, during the whole process, when it is detected that the electrolyzer in the power grid - hydrogen coupling system is in a power balance state, based on the working current information of the electrolyzer, the initial hydrogen production rate of the electrolyzer is detected. And based on the initial hydrogen production rate, working voltage information, and working current information, the energy conversion efficiency of the power grid - hydrogen coupling system is generated. By using the energy conversion efficiency and the electrical resource attribute information of the power grid - hydrogen coupling system under the current working conditions, the initial hydrogen production rate is corrected to obtain the actual hydrogen production rate. Furthermore, based on the electrical resource attribute information and the actual hydrogen production rate, the variation of the hydrogen production rate of the power grid - hydrogen coupling system with respect to the electrical resource attribute information when the hydrogen production resource consumption of the power grid - hydrogen coupling system is minimized is generated, that is, the hydrogen production control information. Since the hydrogen production control information at this time is the hydrogen production control information that minimizes the hydrogen production resource consumption of the power grid - hydrogen coupling system, therefore, based on the hydrogen production control information, the electrolyzer is controlled to perform the hydrogen production operation, so that the hydrogen production resource consumption is minimized when the electrolyzer is in a power balance state, improving the reliability of the hydrogen production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments of the present application or related technologies. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0037] Figure 1 It is an application environment diagram of the hydrogen production method in one embodiment;

[0038] Figure 2 It is a flowchart of the hydrogen production method in one embodiment;

[0039] Figure 3 It is a flowchart of the hydrogen production method in another embodiment;

[0040] Figure 4 It is a structural block diagram of the hydrogen production device in one embodiment;

[0041] Figure 5 It is an internal structure diagram of a computer device in one embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] In order to make the objectives, technical solutions, and advantages of the present application clearer, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are used to explain the present application and are not used to limit the present application.

[0043] The hydrogen production method provided by the embodiments of the present application can be applied to, for exampleFigure 1 In the application environment shown. Among them, the electro-hydrogen coupling system 102 includes a control terminal 104, an electrolyzer 106 and a hydrogen storage device 108. The control terminal 104 communicates with the electrolyzer 106 and the hydrogen storage device 108 through a network. When the user triggers the hydrogen production control on the interface of the control terminal 102, the control terminal 104 responds to the hydrogen production request and starts to control the electro-hydrogen coupling system 102 to perform the hydrogen production operation. First, when the control terminal 104 in the electro-hydrogen coupling system 102 detects that the electrolyzer 106 is in a power balance state, it obtains the working current information and working voltage information of the electrolyzer 106; based on the working current information, it detects the initial hydrogen production rate of the electrolyzer 106, and based on the initial hydrogen production rate, working voltage information and working current information, it detects the energy conversion efficiency of the electro-hydrogen coupling system 102; according to the energy conversion efficiency and the electrical resource attribute information of the electro-hydrogen coupling system under the current working condition, it corrects the initial hydrogen production rate to obtain the actual hydrogen production rate; based on the electrical resource attribute information and the actual hydrogen production rate, it generates the hydrogen production control information when the hydrogen production resource consumption of the electro-hydrogen coupling system 102 is the smallest, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electro-hydrogen coupling system 102 with the electrical resource attribute information; based on the hydrogen production control information, it controls the electrolyzer 106 in the electro-hydrogen coupling system 102 to perform the hydrogen production operation. Further, the hydrogen produced by the electrolyzer 106 will be transported to the hydrogen storage device 108 for storage.

[0044] In an exemplary embodiment, as Figure 2 shown, a hydrogen production method is provided, taking the electro-hydrogen coupling system 104 in Figure 1 as an example for illustration. The electro-hydrogen coupling system includes an electrolyzer, where:

[0045] S100, when it is detected that the electrolyzer is in a power balance state, obtain the working current information and working voltage information of the electrolyzer.

[0046] Among them, the electro-hydrogen coupling system is a system that combines secondary energy forms such as electricity and hydrogen with multiple primary energy supply forms, solves the problem of source-load time difference and peak-valley difference caused by the volatility and intermittency of renewable energy power generation, while increasing the supply of low-carbon hydrogen energy, and fully utilizes the storage characteristics of hydrogen energy through centralized regulation for "peak shaving and valley filling" to improve the economy and flexibility of system operation, and at the same time obtain the output plan of the hydrogen production system to guide production. The main function of the electrolyzer is to convert electrical energy into chemical energy stored in hydrogen.

[0047] Specifically, when the electrolyzer is in the working state, it is necessary to consider the operating laws and safety constraints inside the electrolyzer. Among them, the most important is that the electrolyzer needs to be in a power balance state, that is, the input power of the electrolyzer needs to be equal to the output power. In addition, the electrolyzer also needs to be in a heat balance state, that is, the heat obtained by the electrolyzer needs to be equal to the heat released.

[0048] When it is detected that the electrolyzer in the power-to-hydrogen coupling system is in a power balance state and a heat balance state, since the working current of the electrolyzer is proportional to the hydrogen production rate of the electrolyzer, and the working current of the electrolyzer is also proportional to the working voltage of the electrolyzer, therefore, an electrical model of the electrolyzer can be constructed by mathematically describing the current-voltage characteristics of the electrolyzer. Furthermore, through the electrical model of the electrolyzer, the working current information and working voltage information of the electrolyzer in the power-to-hydrogen coupling system can be obtained.

[0049] S200, based on the working current information, detect the initial hydrogen production rate of the electrolyzer, and based on the initial hydrogen production rate, working voltage information and working current information, detect the energy conversion efficiency of the power-to-hydrogen coupling system.

[0050] Specifically, it can be known from Faraday's law that the electrons consumed by hydrogen generation are proportional to the electric charge provided by the corresponding current. Therefore, there is a proportional relationship between the hydrogen production rate of the electrolyzer and the working current information. Based on the working current information of the electrolyzer, the initial hydrogen production rate of the electrolyzer can be detected. At this time, the initial hydrogen production rate is the theoretical hydrogen production rate, and subsequent corrections are still needed. Further, after detecting the initial hydrogen production rate of the electrolyzer, the energy conversion efficiency of the power-to-hydrogen coupling system can also be detected based on the initial hydrogen production rate, working voltage and working current.

[0051] S300, according to the energy conversion efficiency and the electrical resource attribute information of the power-to-hydrogen coupling system under the current working condition, correct the initial hydrogen production rate to obtain the actual hydrogen production rate.

[0052] Specifically, according to the energy conversion efficiency and the electrical resource attribute information of the power-to-hydrogen coupling system under the current working condition, generate the electrical resource consumption, and based on the electrical resource consumption, correct the initial hydrogen production rate to obtain the actual hydrogen production rate. In practical applications, the unit attribute value of the electrical resource generally describes the unit electricity price of the electrical resource, and the electrical resource consumption is generally the electricity cost.

[0053] It should be noted that in the application scenario of electrolytic hydrogen production, the production cost of hydrogen is closely related to the local unit electricity price, showing a high degree of synchronization. Any change in the electricity price will be directly transmitted to the power-to-hydrogen coupling system, causing corresponding fluctuations in the electricity cost. At the same time, the energy conversion efficiency of the electrolyzer will also affect the electricity cost. For example, when the energy conversion efficiency is low, the electricity cost will increase accordingly. Therefore, the electricity cost can be generated first according to the energy conversion efficiency and the unit electricity price of the power-to-hydrogen coupling system under the current working conditions, and based on the electricity cost, the initial hydrogen production rate can be corrected to obtain the actual hydrogen production rate that meets the electricity cost requirement. When hydrogen is produced at the actual hydrogen production rate, its electricity cost is lower than the preset electricity cost threshold.

[0054] In an exemplary embodiment, according to the energy conversion efficiency and electrical resource attribute information, the electrical resource consumption is generated, and based on the electrical resource consumption, the initial hydrogen production rate is corrected, including: detecting the electric power information of the electrolyzer, obtaining the electric power from the electric power information, generating the electrical resource consumption based on the electric power, energy conversion efficiency and electrical resource attribute information, and correcting the initial hydrogen production rate based on the electrical resource consumption.

[0055] For example, let the energy conversion efficiency be , the electrical resource attribute information at node z at time t be , and the electric power of the electrolyzer be , then the expression for generating the electrical resource consumption is:

[0056]

[0057] After generating the electrical resource consumption, based on the electrical resource consumption, the power-to-hydrogen coupling system can be forced to dynamically adjust the distribution of the input power and output power of the electrolyzer during the period of low energy conversion efficiency to correct the initial hydrogen production rate. In practical applications, dynamically adjusting the distribution of the input power and output power of the electrolyzer can be achieved by means such as reducing the input power of the electrolyzer or adjusting the start-stop state to optimize the operation strategy.

[0058] S400. Generate hydrogen production control information when the hydrogen production resource consumption of the power-to-hydrogen coupling system is minimized based on the electrical resource attribute information and the actual hydrogen production rate, where the hydrogen production control information characterizes the change of the hydrogen production rate of the power-to-hydrogen coupling system with the electrical resource attribute information.

[0059] Specifically, the electrical resource attribute information corresponds one-to-one with the hydrogen production rate. Based on the electrical resource attribute information and the actual hydrogen production rate, the hydrogen production resource consumption of the power-to-hydrogen coupling system can be determined. The optimization goal of the power-to-hydrogen coupling system is to minimize the hydrogen production resource consumption of the power-to-hydrogen coupling system. Therefore, based on the electrical resource attribute information and the actual hydrogen production rate, hydrogen production control information can be generated when the hydrogen production resource consumption of the power-to-hydrogen coupling system is minimized, that is, hydrogen production control information characterizing the change of the hydrogen production rate of the power-to-hydrogen coupling system with the electrical resource attribute information is generated.

[0060] Furthermore, determining the hydrogen production resource consumption of the power-to-hydrogen coupling system based on the electrical resource attribute information and the actual hydrogen production rate is to determine the hydrogen production of the electrolyzer based on the actual hydrogen production rate, and determine the hydrogen production resource consumption of the power-to-hydrogen coupling system based on the electrical resource attribute information, the hydrogen production, and the conversion coefficient between the electrical resource attribute information and the unit attribute value of the hydrogen resource.

[0061] For example, the electrical resource attribute information is the electricity price, and the unit attribute value of the hydrogen resource is the hydrogen price. Let the electricity price of node z at time t be , the conversion coefficient between the electricity price and the hydrogen price be , and the hydrogen production of the electrolyzer of node z at time t be . Then at this time, the hydrogen production resource consumption of the power-to-hydrogen coupling system is: .

[0062] S500, control the power-to-hydrogen coupling system to perform hydrogen production operations based on the hydrogen production control information.

[0063] Specifically, through the hydrogen production control information, that is, through the change of the hydrogen production rate of the power-to-hydrogen coupling system with the electrical resource attribute information, control the power-to-hydrogen coupling system to perform hydrogen production operations. For example, when the electrical resource attribute information at the current moment is A, query the hydrogen production rate k matching A from the hydrogen production control information, and control the power-to-hydrogen coupling system to perform hydrogen production operations based on the hydrogen production rate k. At this time, the hydrogen production resource consumption of the power-to-hydrogen coupling system is minimized, and the cost of the power-to-hydrogen coupling system is accurately controlled. Further, after the electrolyzer finishes hydrogen production, the power-to-hydrogen coupling system can control the hydrogen transmission equipment, such as pipelines, to transmit the hydrogen produced by the electrolyzer to the hydrogen storage equipment for storage.

[0064] In the above hydrogen production method, throughout the process, when it is detected that the electrolyzer in the power-to-hydrogen coupling system is in a power balance state, based on the working current information of the electrolyzer, the initial hydrogen production rate of the electrolyzer is detected, and based on the initial hydrogen production rate, the working voltage information, and the working current information, the energy conversion efficiency of the power-to-hydrogen coupling system is generated. Through the energy conversion efficiency and the electrical resource attribute information of the power-to-hydrogen coupling system under the current working conditions, the initial hydrogen production rate is corrected to obtain the actual hydrogen production rate. Furthermore, based on the electrical resource attribute information and the actual hydrogen production rate, the variation of the hydrogen production rate of the power-to-hydrogen coupling system with respect to the electrical resource attribute information when the hydrogen production resource consumption of the power-to-hydrogen coupling system is minimized, that is, the hydrogen production control information, is generated. Since the hydrogen production control information at this time is the hydrogen production control information that minimizes the hydrogen production resource consumption of the power-to-hydrogen coupling system, therefore, based on the hydrogen production control information, the electrolyzer is controlled to perform the hydrogen production operation, so that the hydrogen production resource consumption is minimized when the electrolyzer is in a power balance state, improving the reliability of the hydrogen production process.

[0065] In an exemplary embodiment, based on the working current information, the initial hydrogen production rate of the electrolyzer is detected, and based on the initial hydrogen production rate, the working voltage information, and the working current information, the energy conversion efficiency of the power-to-hydrogen coupling system is detected, including: generating the initial hydrogen production rate and the electric power information of the electrolyzer based on the working current information and the working current information; determining the energy conversion efficiency of the power-to-hydrogen coupling system based on the electric power information and the initial hydrogen production rate.

[0066] Specifically, the main function of the electrolyzer is to convert electrical energy into chemical energy stored in hydrogen. Therefore, its modeling mainly focuses on the relationship between the electrical energy parameter voltage and the chemical energy parameter hydrogen production, and at the same time, the conversion efficiency between the two needs to be considered. According to Faraday's law, the electrons consumed in hydrogen generation are proportional to the electric charge provided by the corresponding current. Therefore, there is a proportional relationship between hydrogen production and the working current. The working current can be obtained from the working current information, and thus the electrochemical model of the electrolyzer can be constructed.

[0067] For the electrochemical model, since in the actual reaction, due to parasitic current losses, the maximum hydrogen production amount of the reaction is always smaller than the theoretical hydrogen production amount, therefore, the initial hydrogen production rate of the electrolyzer can be determined by obtaining the Faraday efficiency and then combining it with the working current. The Faraday efficiency is related to the reaction temperature and the current density, and its calculation formula is as follows: , where is the Faraday efficiency, ≤1; is the working current; T is the electrolyzer temperature; is the electrode area; is the temperature coefficient. Furthermore, based on the Faraday efficiency and the working current, the initial hydrogen production rate of the electrolyzer is generated, and its expression can be: , where at this time is the initial hydrogen production rate; is the number of electrons transferred in a single reaction; F is the Faraday constant; is the Faraday efficiency. At this time, the electrolyzer not only produces hydrogen, but also may produce oxygen. The generation expression of oxygen can be: , where V o is the oxygen production rate.

[0068] The energy conversion efficiency of the power-to-hydrogen coupling system is the ratio of the energy actually converted into hydrogen in the power-to-hydrogen coupling system to the total input energy of the system. It depends on the hydrogen production rate and hydrogen output of the electrolyzer. When calculating, the electric power of the electrolyzer, the initial hydrogen production rate, and the operation duration are required. The mathematical model of the energy conversion efficiency is as follows: , where is the higher heating value of hydrogen; is the total operation duration of the power-to-hydrogen coupling system, including the startup time, is the initial hydrogen production rate of the electrolyzer, is the electric power of the electrolyzer. The expression of the electric power of the electrolyzer is as follows: , is the electrode area, is the working current, and its energy conversion efficiency can be simplified as follows: .

[0069] In an exemplary embodiment, if the energy conversion efficiency is lower than the preset energy conversion efficiency threshold, it is considered that the energy conversion efficiency of the power-to-hydrogen coupling system is low, and the hydrogen production process of the power-to-hydrogen coupling system needs to be optimized. If the energy conversion efficiency is higher than the preset energy conversion efficiency threshold, it is considered that the energy conversion efficiency of the power-to-hydrogen coupling system is normal, and the electrolyzer can continue to perform the hydrogen production operation.

[0070] In the above embodiment, based on the initial hydrogen production rate, working voltage information, and working current information, the energy conversion efficiency of the power-to-hydrogen coupling system can be accurately determined, and then whether the hydrogen production process of the power-to-hydrogen coupling system is normal can be accurately evaluated.

[0071] In an exemplary embodiment, the total efficiency of the electrolyzer can also be generated. The total efficiency of the electrolyzer is the product of the Faraday efficiency and the voltage efficiency. Among them, the voltage efficiency is the thermal efficiency of the electrolyzer. The thermal efficiency of the electrolyzer is the ratio of the theoretical energy consumed for water electrolysis to the actual energy consumed, and can be calculated by the ratio of the thermal neutral voltage to the actual voltage of the electrolyzer: , where is the total efficiency of the electrolyzer; is the thermal efficiency of the electrolyzer; is the thermal neutral voltage of electrolytic hydrogen production, is the Faraday efficiency; in addition, the thermal power consumed during the electrolysis process , where is the working current.

[0072] The thermal neutral voltage represents the enthalpy change energy conversion of water electrolysis, including the high calorific value conversion of water electrolysis and the conversion from liquid to vapor saturation state:

[0073]

[0074] In the formula, is the voltage corresponding to high calorific value hydrogen; , are the corresponding temperature coefficients respectively, is the vapor pressure of pure water.

[0075] In an exemplary embodiment, the electrolytic cell includes an electrode and an electrolyte; obtaining the working voltage information of the electrolytic cell, including: detecting the reversible electrolysis voltage information of the electrolytic cell, the surface hydrogen coverage rate of the electrode, and the relative volume between hydrogen and the electrolyte; detecting the activation overvoltage information of the electrolytic cell based on the surface hydrogen coverage rate, and detecting the ohmic overvoltage information of the electrolytic cell based on the relative volume between hydrogen and the electrolyte; generating the working voltage information of the electrolytic cell based on the reversible electrolysis voltage information, activation overvoltage information and ohmic overvoltage information.

[0076] Specifically, the working voltage information of the electrolytic cell is also positively correlated with the working current information. Since the electrical response of the electrolytic cell is almost instantaneously established, that is, the electrolytic cell can be considered as a unique non-linear resistance element, the electrical model of the electrolytic cell can be constructed by mathematically describing the current-voltage characteristics.

[0077] More specifically, based on physical laws, the working voltage information of the electrolytic cell can be divided into four items by using the voltage-current polarization curve of the electrolytic cell: reversible electrolysis voltage information, ohmic overvoltage information, activation overvoltage information and diffusion overvoltage information. Among them, the diffusion overvoltage information only plays a role when the current density is greater than 1 A / cm², while the current density of alkaline electrolysis is generally lower than 0.5 A / cm² at present, so it is ignored in this application. Therefore, the calculation formula of the working voltage of the electrolytic cell is as follows: , in the formula, , , , are the working voltage, reversible electrolysis voltage, ohmic overvoltage and activation overvoltage of the electrolytic cell respectively.

[0078] It should be noted that there is a bubble effect in the electrolytic cell. That is to say, hydrogen forms hydrogen bubbles in the electrolyte near the electrode until the critical size is reached, so as to overcome the resistivity and leave the electrode surface. The bubble effect affects the electrolysis process through two parameters. The first parameter is the hydrogen coverage rate on the electrode surface, which will lead to a reduction in the effective reaction area of the electrode surface; the second parameter is the bubbling rate, that is, the relative volume between the bubbles and the electrolyte, which will lead to a decrease in the conductivity of the electrolyte. Therefore, through the hydrogen coverage rate and the bubbling rate, the working voltage information of the electrolytic cell can be corrected to make the generation process of the working voltage information more accurate.

[0079] 1) Reversible electrolysis voltage It is the minimum voltage applied between the two electrodes to cause the electrolysis of water reaction and can be calculated by the Nernst equation: , where is the universal gas constant, is the standard potential, T is the working temperature of the electrolytic cell, , , are the system working pressure, the pressures of wet hydrogen and oxygen near the electrode, and the vapor pressure of pure water respectively, and F is the Faraday efficiency.

[0080] The first term is mainly affected by the working temperature and is expressed as a function of temperature: , where is the corresponding temperature coefficient.

[0081] The second term represents the influence of pressure on the reversible voltage, , , is mainly affected by pressure and alkali concentration:

[0082]

[0083] where , , , are the corresponding temperature and concentration coefficients respectively; is the molar concentration of KOH (alkali solution); is the solution concentration of KOH.

[0084] 2) Ohmic overvoltage refers to the overpotential caused by the transfer of ions or electrons in components such as electrodes, electrolytes, and diaphragms during the electrolysis process. According to Ohm's law, the overvoltage can be calculated by multiplying the total resistance and the current: , where , , , are the resistances of the hydrogen electrode, oxygen electrode, alkali solution, and diaphragm, respectively. Among them, the resistances of the electrodes and electrolyte depend on the component materials and geometries of the components:

[0085]

[0086] In the formula, is the conductivity; L is the length of the material through which the current passes; is the effective reaction area of the electrode surface; and and and are the conductivities of the hydrogen and oxygen electrodes, nickel electrode, and alkali solution, respectively; and are the corresponding temperature coefficient and concentration coefficient, respectively.

[0087] Currently, diaphragms are commonly replaced by porous composite materials based on polymers and ceramics. Among them, diaphragms are widely used due to their high surface area (22 m² / g) and optimal wettability. The calculation of its resistance is as follows: , in the formula, is the diaphragm area; is the temperature coefficient.

[0088] 3) The activation overvoltage refers to the voltage caused by breaking through the equilibrium state and starting the forward reaction in an electrochemical reaction. It is usually calculated using the Butler-Volmer equation. Since the change in alkali solution concentration is ignored in this article, it can be approximated by the Tafel logarithmic equation, and the obtained expression is:

[0089]

[0090] In the formula, and are the transfer charge coefficients of the cathode and anode, respectively; and are the exchange currents of the cathode and anode, respectively. Taking the nickel electrode as an example, the calculation of the relevant parameters is as follows:

[0091]

[0092] Among them, is the effective reaction area of the electrode surface of hydrogen, is the temperature of the electrode, is the working pressure of the electrode.

[0093] Furthermore, the first parameter affected by the bubble effect is the hydrogen coverage rate on the surface of the electrode, which will cause a reduction in the effective reaction area of the electrode surface. The hydrogen coverage rate is a function of the current density, temperature, and pressure: , among which, is the electrode area, I C is the working current. Therefore, the effective reaction area of the electrode surface should be corrected by the hydrogen coverage rate, and the corresponding ohmic overvoltage and activation overvoltage should also increase accordingly: , where 、 are the effective reaction areas of the electrode surfaces of the hydrogen and oxygen electrodes respectively.

[0094] The second parameter is the bubbling rate , that is, the relative volume of bubbles to the electrolyte, which will cause the conductivity of the electrolyte in the electrolyte to decrease. Based on the surface hydrogen coverage rate, the bubbling rate can be obtained, and it can be calculated by the Bruggeman equation: , where is the surface hydrogen coverage rate of the electrode, is the conductivity of the alkaline solution, is the corrected conductivity of the alkaline solution.

[0095] In the above embodiments, through the hydrogen coverage rate and bubbling rate of the electrolytic cell, the activation overvoltage information and ohmic overvoltage information of the electrolytic cell are accurately corrected. Furthermore, based on the reversible electrolysis voltage information, the corrected activation overvoltage information and ohmic overvoltage information, the working voltage information of the electrolytic cell is generated, and the generation process of the working voltage information of the electrolytic cell is more accurate.

[0096] In an exemplary embodiment, the electrolysis-hydrogen coupling system further includes an auxiliary starting system; as Figure 3 shown, S100 includes:

[0097] S110, detecting the heat generation information, heat dissipation information, start-stop resource consumption information and start-stop duration information of the electrolytic cell, as well as the heat supply information of the auxiliary starting system under the current working conditions.

[0098] S120, determining the working temperature information of the electrolytic cell based on the heat generation information, heat dissipation information and heat supply information.

[0099] S130, detecting whether the start-stop state of the electrolytic cell is normal based on the start-stop resource consumption information and start-stop duration information.

[0100] S140, when the working temperature information indicates that the working temperature of the electrolytic cell is within the preset temperature safety range and the start-stop state of the electrolytic cell is normal, obtaining the input power information and output power information of the electrolytic cell.

[0101] S150, predicting the working current information and working voltage information of the electrolytic cell when it is in a power balance state based on the input power information and output power information.

[0102] Among them, the start-stop resource consumption information includes start-up resource consumption information and shutdown resource consumption information, and the start-stop duration information includes the minimum continuous operation duration and the minimum shutdown duration. The heat generation information of the electrolyzer is the amount of heat generated by the electrolyzer itself, the heat dissipation information is the amount of heat dissipated by the electrolyzer due to air heat radiation and water circulation, and the heat supply information is the amount of heat that the auxiliary start-up system can provide under the current working conditions.

[0103] Specifically, during the electrolytic hydrogen production process, the start-stop state and working temperature of the electrolyzer are important factors affecting its working efficiency.

[0104] Regarding the working temperature of the electrolyzer, in addition to the energy conversion efficiency of electrolytic hydrogen production, the safe and stable operation of the equipment is also crucial. Due to the thermal effect of the current and the electrochemical reaction, certain heat will be generated during the electrolysis process. When the heat generated by the electrolyzer is greater than the heat dissipated, the temperature of the electrolyzer will rise accordingly. Excessive temperature will affect the efficiency and safety of the electrolyzer, and will also exacerbate the loss of components. Therefore, it is necessary to control the temperature within a reasonable range. In order to describe the change of internal thermal energy and temperature during the working process of the electrolyzer and its influence, a thermodynamic model of the electrolyzer is constructed in this paper: , where is the heat generation amount of the electrolyzer at node z in time period t; is the heat dissipation amount generated by air heat radiation and water circulation of the electrolyzer at node z in time period t; is the heat supply amount transferred from the auxiliary start-up system to the electrolyzer at node z in time period t, is the working temperature of the electrolyzer.

[0105] Furthermore, the heat dissipation amount can be obtained from the heat dissipation coefficient of the electrolyzer, the lower limit of the working temperature of the electrolyzer and the indoor temperature : ; The heat supply amount transferred from the auxiliary start-up system to the electrolyzer needs to meet the condition: , where is the upper limit of the heat that can be transferred by the electrolyzer auxiliary start-up system at node z in time period, is the start-up action flag quantity of the electrolyzer at node z in time period, where , is the working state flag quantity of the electrolyzer at node in time period, 1 means running, 0 means shutdown; the working temperature of the electrolyzer at the next moment needs to meet: , is the upper temperature limit during the start-up phase of the electrolyzer at node z, where , is the input power of the electrolyzer at node z during the t period, is the conversion coefficient between the heat generation and the output power of the electrolyzer at node z during the t period, is the coefficient between the heat generation of the electrolyzer and the operating temperature; , is a sufficiently large constant; , is the upper / lower temperature limit of the electrolyzer at node z, is the operating status flag of the electrolyzer at node z during the t period, 1 means running, 0 means shutdown; and .

[0106] Regarding the start-stop status of the electrolyzer, rapid power changes and frequent start-stops will cause losses to the components. Existing research shows that the temperature and pressure changes caused by rapid start-stop actions will cause losses to the internal components of the electrolyzer. It is necessary to consider the negative impacts brought by the start-stop actions of the electrolyzer and give the electrolyzer a certain start-up and shutdown time to avoid damage caused by temperature and pressure changes. The following electrolyzer start-stop model is established:

[0107]

[0108]

[0109]

[0110]

[0111] In the formula: , is the minimum continuous operation / shutdown duration of the electrolyzer at node ; , is the start-up / shutdown resource consumption of the electrolyzer at node ; , is the single start-up / shutdown cost of the electrolyzer at node , is the operating status flag of the electrolyzer at node during the t period, -- the operating status flag of the electrolyzer at node during the t-1 period, and so on for others, 1 means running, 0 means shutdown.

[0112] Therefore, the present application can obtain the starting resource consumption amount from the starting resource consumption information and the shutting-down resource consumption amount from the shutting-down resource consumption information, and based on the starting resource consumption amount, the shutting-down resource consumption amount, the minimum continuous operation duration, and the minimum shutdown duration, detect whether the starting and stopping state of the electrolytic cell conforms to the above starting and stopping model. If it conforms to the above starting and stopping model, the starting and stopping state of the electrolytic cell is normal.

[0113] When the working temperature is within the preset temperature safety range and the starting and stopping state of the electrolytic cell is normal, it is possible to detect whether the electrolytic cell is in a power balance state, that is, based on the incoming power information and the outgoing power information, detect whether the incoming power of the electrolytic cell is balanced with the outgoing power. It should be noted that the incoming power information of the present application not only includes the initial incoming power of the electrolytic cell , but also includes the power generated by the working temperature. Therefore, the expression for detecting whether the electrolytic cell is in a power balance state includes:

[0114]

[0115] Wherein, is the incoming power of the electrolytic cell at node z in the t period; is the outgoing power of the electrolytic cell at node z in the t period; is the heat generation amount of the electrolytic cell at node z in the t period; is the internal working temperature of the electrolytic cell at node z in the t period; , are the upper / lower limits of the electrolytic cell at node z in the t period; is the working state flag of the electrolytic cell at node z in the t period, 1 means running, and 0 means shutdown; is the conversion coefficient between the incoming power and the outgoing power of the electrolytic cell; is the conversion coefficient between the heat generation amount and the outgoing power of the electrolytic cell; is the coefficient between the outgoing power and the temperature of the electrolytic cell; is the coefficient between the heat generation amount and the temperature of the electrolytic cell.

[0116] If the incoming power information and the outgoing power information of the electrolytic cell satisfy the above expression, it means that the electrolytic cell is in a power balance state, and then the working current information and the working voltage information of the electrolytic cell in the case of being in a power balance state can be obtained.

[0117] In the above embodiments, by making the electrolytic cell satisfy the starting and stopping constraints, the working temperature constraints, and the power balance constraints during operation, a reliable hydrogen production process is then executed.

[0118] In an exemplary embodiment, a hydrogen storage device is included in the electric-hydrogen coupling system. The electrolyzer is connected to the hydrogen storage device through a pipeline, and a valve is provided between the pipeline and the hydrogen storage device. After controlling the electric-hydrogen coupling system to perform a hydrogen production operation based on the hydrogen production control information, the method further includes: detecting the hydrogen flow rate and hydrogen inventory information in the pipeline; detecting the hydrogen transmission efficiency of the pipeline based on the hydrogen flow rate information and the hydrogen inventory information; and controlling the valve to open when the hydrogen transmission efficiency is within a preset hydrogen transmission safety efficiency threshold. Wherein, when the valve is open, the hydrogen in the pipeline is transmitted to the hydrogen storage device.

[0119] Specifically, the electrolyzer produces hydrogen at an actual hydrogen production rate matched based on the electrical resource attribute information at the current moment. At this time, the hydrogen production volume generated by the electrolyzer can be: , where is the hydrogen production volume of the electrolyzer at node z at time t, is the hydrogen production rate of the electrolyzer, is the duration of hydrogen production by the electrolyzer. Since the pipeline has a large transmission capacity, high efficiency, low energy consumption and transportation cost, it is the most effective way to achieve long-distance and large-scale low-cost transportation of hydrogen, meeting the development needs of the future hydrogen energy system. Therefore, the hydrogen transmission pipeline is used as the main transportation route of the hydrogen energy system to transmit the hydrogen corresponding to the hydrogen production volume to the hydrogen storage device. At this time, a pipeline network transmission model of hydrogen is constructed:

[0120]

[0121]

[0122]

[0123]

[0124] In the formula: is the air pressure at node in the time period; , is the upper and lower limits of the air pressure at node : is the hydrogen flow rate of pipeline in the time period; , is the upper and lower limits of the hydrogen flow rate of pipeline : is the hydrogen inflow of pipeline in the time period; is the hydrogen outflow of pipeline in the time period; is the pipeline The direction of the hydrogen gas flow during the period, where 1 represents the positive direction and 0 represents the reverse direction; is the Weymouth equation coefficient for the pipeline .

[0125] It can be seen that the hydrogen gas flow in the pipeline is generated by the hydrogen gas inflow and outflow in the pipeline. The hydrogen gas flow has certain upper and lower limit thresholds. The air pressure in the pipeline is related to the hydrogen gas flow, and the air pressure in the pipeline also has certain upper and lower limit thresholds.

[0126] There is also an important characteristic in the pipe network transmission system: pipe storage. Since hydrogen is different from electric energy, hydrogen has a specific physical form and has a certain compressibility as a gas. Therefore, during the process of pipe network transmission, there is always hydrogen gas in the pipeline. The volume of this part of the gas is the pipe storage, and its size is related to the air pressure at both ends of the pipeline. The mathematical model of the hydrogen pipe storage is as follows:

[0127]

[0128]

[0129]

[0130]

[0131] In the formula: is the hydrogen gas stock in the pipeline at the period; is the upper limit of the gas stock in the pipeline ; is the coefficient between the pipe storage and the air pressure.

[0132] Furthermore, by detecting the hydrogen gas flow information and hydrogen gas stock information in the pipeline, the hydrogen gas transmission efficiency of the pipeline can be detected through the corresponding hydrogen gas flow and hydrogen gas stock, that is, the transmission capacity of the pipeline can be detected. When the hydrogen gas transmission efficiency is within the preset hydrogen gas transmission safety efficiency threshold, it is considered that the transmission capacity of the pipeline is strong and there will be no air leakage phenomenon. At this time, the valve can be controlled to open. When the valve is open, the pipeline is connected to the hydrogen storage device, and hydrogen gas can be transmitted to the hydrogen storage device; when the hydrogen gas transmission efficiency is not within the preset hydrogen gas transmission safety efficiency threshold, it is considered that the transmission capacity of the pipeline is weak and there may be an air leakage phenomenon, and the pipeline needs to be repaired. In practical applications, when the hydrogen gas flow in the pipeline is high and the hydrogen gas stock is low, the hydrogen gas transmission efficiency of the pipeline is strong; when the hydrogen gas flow in the pipeline is low and the hydrogen gas stock is high, the hydrogen gas transmission efficiency of the pipeline is weak.

[0133] In this embodiment, the hydrogen transmission efficiency of the pipeline can be accurately evaluated through the hydrogen flow rate and the hydrogen inventory. When the hydrogen transmission efficiency of the pipeline is within the preset hydrogen transmission safety efficiency threshold, the transmission capacity of the pipeline is considered reliable. Therefore, the hydrogen can be transmitted to the hydrogen storage device by controlling the opening of the valve.

[0134] In an exemplary embodiment, not only can hydrogen be produced using an electrolyzer, but also non-electrolytic hydrogen production can be used. The hydrogen production sources for hydrogen production are uniformly regarded as conventional hydrogen production sources for modeling, and their production constraints are as follows: , where: is the amount of hydrogen produced by the conventional hydrogen production source at node z during time period t; , are the upper and lower limits of the hydrogen production amount per unit time of the conventional hydrogen production source at node z.

[0135] In an exemplary embodiment, when the hydrogen transmission efficiency is within the preset hydrogen transmission safety efficiency threshold, controlling the opening of the valve further includes: detecting the hydrogen load information of the electrolysis-hydrogen coupling system, the hydrogen inflow information and the hydrogen outflow information of the pipeline, and generating the hydrogen production information of the electrolyzer based on the actual hydrogen production rate; generating the marginal resource consumption information of the electrolysis-hydrogen coupling system based on the hydrogen production information, the hydrogen inflow information, the hydrogen outflow information and the hydrogen load information, and detecting whether the hydrogen supply in the electrolysis-hydrogen coupling system is sufficient based on the marginal resource consumption information; controlling the opening of the valve when the hydrogen transmission efficiency is within the preset hydrogen transmission safety efficiency threshold and the hydrogen supply is sufficient.

[0136] Specifically, when hydrogen is transmitted to the hydrogen storage device through the pipeline, the energy balance constraint needs to be satisfied, that is, it is necessary to satisfy: , where: is the set of pipelines with node z as the head node; is the hydrogen inflow amount of pipeline l during time period t; is the pipeline 's hydrogen outflow amount during time period t; is the set of pipelines with node z as the end node; is at node z 's hydrogen load during time period t; is the scenario 's hydrogen production amount of the electrolyzer at node z during time period t.

[0137] Based on the above analysis, by obtaining the hydrogen inflow information and the hydrogen outflow information of all pipelines, obtaining the hydrogen inflow amount and the hydrogen outflow amount from the hydrogen inflow information and the hydrogen outflow information, and querying the hydrogen production rate corresponding to the electrical resource attribute information at the current moment based on the hydrogen production control information, in order to generate the hydrogen production information of the electrolyzer based on the hydrogen production rate and obtain the hydrogen production amount from the hydrogen production information.

[0138] Detect whether the hydrogen production, hydrogen inflow, and hydrogen outflow are in hydrogen energy balance with the hydrogen load of the power-to-hydrogen coupling system, so as to obtain the hydrogen energy balance degree of the power-to-hydrogen coupling system. Further, when the hydrogen production, hydrogen inflow, and hydrogen outflow are in hydrogen energy balance with the hydrogen load, the hydrogen energy balance degree of the power-to-hydrogen coupling system is 1; when the hydrogen production, hydrogen inflow, and hydrogen outflow are not in hydrogen energy balance with the hydrogen load, the hydrogen energy balance degree of the power-to-hydrogen coupling system is 0.

[0139] At this time, based on the marginal price theory, the dual variable of the hydrogen energy balance equation is defined as the marginal production cost in the hydrogen energy system and mapped to the hydrogen energy balance equation constructed in this application. The marginal consumed resource is the dual variable corresponding to the hydrogen node balance equation, as follows:

[0140]

[0141] In the formula, is the dual variable of the energy balance equation, that is, the marginal consumed resource at node at time period . That is to say, based on the hydrogen production, hydrogen inflow, hydrogen outflow, and hydrogen load, the marginal consumed resource of the power-to-hydrogen coupling system is generated to detect whether the hydrogen supply in the power-to-hydrogen coupling system is sufficient through the marginal consumed resource. When the marginal consumed resource is high, it indicates that the hydrogen supply at this node in the power-to-hydrogen coupling system is tight; when the marginal consumed resource is low, it indicates that the hydrogen supply at this node in the power-to-hydrogen coupling system is sufficient. When the hydrogen supply is sufficient, the control valve is opened to transfer hydrogen to the hydrogen storage device.

[0142] In the above embodiment, by generating the marginal consumed resource of the power-to-hydrogen coupling system through the hydrogen production, hydrogen inflow, hydrogen outflow, and the hydrogen load of the power-to-hydrogen coupling system, it is possible to accurately judge whether the hydrogen supply in the power-to-hydrogen coupling system is sufficient, so as to avoid transferring hydrogen to the hydrogen storage device when the hydrogen supply is insufficient, which increases the oxygen content in the hydrogen storage device and reduces the reliability of storing hydrogen in the hydrogen storage device.

[0143] In an exemplary embodiment, after the control valve is opened, the method further includes: obtaining the hydrogen storage information, hydrogen release information, storage loss information, and historical hydrogen storage information of the previous time period of the hydrogen storage device; detecting whether the hydrogen storage state of the hydrogen storage device is normal based on the hydrogen storage information, hydrogen release information, storage loss information, and historical hydrogen storage information; and repairing the hydrogen storage device when the hydrogen storage state of the hydrogen storage device is abnormal.

[0144] Specifically, the hydrogen storage device can be a storage device such as a hydrogen storage tank. As time goes by, the storage of the hydrogen storage device may experience losses. Therefore, it is possible to obtain information on hydrogen storage, hydrogen release, storage losses, and historical hydrogen storage information for the previous time period of the hydrogen storage device. Determine the hydrogen storage amount from the hydrogen storage information, determine the hydrogen release amount from the hydrogen release information, determine the storage loss coefficient from the storage loss information, and determine the historical hydrogen storage amount for the previous time period from the historical hydrogen storage information of the previous time period. Based on the hydrogen storage amount, hydrogen release amount, storage loss coefficient, and historical hydrogen storage amount, generate the theoretical hydrogen storage amount of the hydrogen storage device, and detect the actual hydrogen storage amount of the hydrogen storage device. Based on the actual hydrogen storage amount and the theoretical hydrogen storage amount, determine whether the hydrogen storage state of the hydrogen storage device is normal; in the case where the hydrogen storage of the hydrogen storage device is abnormal, for example, when the actual hydrogen storage amount is not within the theoretical hydrogen storage range, repair the hydrogen storage device. More specifically, the constructed hydrogen storage device model is as follows:

[0145]

[0146]

[0147]

[0148]

[0149]

[0150] In the formula: is the actual hydrogen storage amount of the hydrogen storage device at node in the time period; , is the hydrogen storage / release amount of the hydrogen storage device at node in the time period; is the upper limit of the hydrogen storage amount of the hydrogen storage device at node ; , is the upper limit of the hydrogen storage / release amount per unit time of the hydrogen storage device at node ; is the storage loss coefficient of the hydrogen storage device at node ; , is the hydrogen storage / release amount of the hydrogen storage device at node .

[0151] When the expression of the above hydrogen storage device model is satisfied, the hydrogen storage state of the hydrogen storage device is normal.

[0152] In the above embodiments, by obtaining the hydrogen storage information, hydrogen release information, storage loss information of the hydrogen storage device, and the historical hydrogen storage information of the previous time period, the theoretical hydrogen storage information in the hydrogen storage device can be accurately determined. By comparing the theoretical hydrogen storage information with the actual hydrogen storage information, it is possible to accurately detect whether an abnormality occurs during the hydrogen storage process, and in the case of abnormal hydrogen storage in the hydrogen storage device, the hydrogen storage device can be repaired.

[0153] In an exemplary embodiment, the electric-hydrogen coupling system includes multiple energy units, which are connected by transmission lines. Based on the electrical resource attribute information and the actual hydrogen production rate, hydrogen production control information when the hydrogen production consumption resource amount of the electric-hydrogen coupling system is minimized is generated. It further includes: detecting the unit power generation information of multiple energy units, the input power information of the electrolyzer, and the transmission power information of all transmission lines in the electric-hydrogen coupling system under multiple random scenarios; based on the unit power generation information, input power information, and transmission power information, detecting whether the electric-hydrogen coupling system is in a power balance state; in the case where the electric-hydrogen coupling system is in a power balance state, based on the electrical resource attribute information and the actual hydrogen production rate, generating hydrogen production control information when the hydrogen production consumption resource amount of the electric-hydrogen coupling system is minimized.

[0154] Among them, the multiple energy units include renewable energy units and non-renewable energy units. The renewable energy units include wind turbine units and photovoltaic units, etc., and the non-renewable energy units include thermal power units, etc.

[0155] Specifically, the power system and the hydrogen energy system are jointly optimized, and a two-stage stochastic optimization method is adopted. Considering the fluctuations in the output of renewable energy (such as the uncertainties of wind turbine units and photovoltaic units), the operating costs of thermal power units, power balance, and the dynamic characteristics of the hydrogen energy system, the goal is to achieve the coordinated operation of the electric-hydrogen coupling system and minimize the overall cost.

[0156] Taking the coordinated operation of the electric-hydrogen coupling system as an example, at this time, it is mainly necessary to achieve the power balance of the electric-hydrogen coupling system. If it is necessary to determine whether the electric-hydrogen coupling system is in a power balance state, the unit power generation information of multiple energy units, the input power information of the electrolyzer, and the transmission power information of all transmission lines in the electric-hydrogen coupling system under multiple random scenarios can be detected. Among them, the unit power generation information of multiple energy units includes the first power generation corresponding to renewable energy and the second power generation consumed during the operation of the thermal power unit. The first power generation corresponding to renewable energy includes the power generation of photovoltaic units and the power generation of wind turbine units; the input power information of the electrolyzer includes the input power of the electrolyzer; the transmission power information of all transmission lines includes the transmission power when all transmission lines are the head-end nodes or end-end nodes.

[0157] Based on the first power generation, second power generation, transfer power, and transmission power, detect whether the power - to - hydrogen coupling system satisfies the power balance constraint. If it is satisfied, the power - to - hydrogen coupling system is in a power balance state. The expression of the power balance constraint is specifically as follows:

[0158]

[0159] In the formula: is the second power generation of the thermal power unit under scenario s at time period; is the power generation of the wind power unit under scenario at time period; is the power generation of the photovoltaic unit under scenario s at time period; is the transfer power of the node electrolyzer at the time period; is the transmission power of the transmission line k in scenario s at time period; is the power load of node at time period; is the set of transmission lines with node as the head - end node; is the set of transmission lines with node as the end - node; is the set of transmission lines with node

[0160] If the power - to - hydrogen coupling system satisfies the above - mentioned power balance constraint, it indicates that the power - to - hydrogen coupling system is in a power balance state. At this time, based on the electrical resource attribute information and the actual hydrogen production rate, the hydrogen production control information when the hydrogen production resource consumption of the power - to - hydrogen coupling system is minimized can be generated.

[0161] In an exemplary embodiment, the operation optimization model of the power - to - hydrogen coupling system adopts a two - stage stochastic unit commitment model. The objective function of the model is to minimize the overall system operation cost, as follows:

[0162]

[0163] In the formula: is the number of scenarios; is the number of nodes in the power system; is the number of nodes in the hydrogen energy system; is the probability of scenario occurring; is the production cost of the thermal power unit under scenario at time period; is the production cost of the thermal power unit under scenario , , is the quadratic / linear / constant term of the consumption characteristic parameters of the thermal power unit; , , is the start-up / shut-down cost of the thermal power unit ; ; is the single start-up / shut-down cost of thermal power unit i.

[0164] Furthermore, for modeling the uncertainty of renewable energy output: The method of generating random scenarios is used to simulate the uncertainty of renewable energy output, and a renewable energy output model in the electric-hydrogen coupling system is constructed. The predicted renewable energy output curve is input as the basic output curve: , where: is the set of predicted renewable energy output points; is the predicted output of the renewable energy unit at time.

[0165] Add a normal distribution error term to the predicted output points in each time period: , where: is the error term subject to normal distribution; is the output of the randomly generated renewable energy unit at time, and the probability of the corresponding scenario is obtained: , where: is the occurrence probability corresponding to the error term . Then, multiple random scenarios and their occurrence probabilities are obtained, and the probabilities of the generated several random scenarios are normalized: .

[0166] For the output of wind turbines: , where: is the power generation of the wind turbine at under scenario at time period; is the upper limit of the power generation of the wind turbine at under scenario at time period.

[0167] For the output of photovoltaic units: , where: is the power generation of the photovoltaic unit at under scenario at is the power generation of the photovoltaic unit at under scenario at The upper limit of the power generation of the thermal power unit during a period.

[0168] Regarding the operating constraints of the thermal power unit:

[0169]

[0170]

[0171]

[0172]

[0173]

[0174] Where: is the scenario of the thermal power unit at the power generation during the period; and are the upper and lower limits of the output of the thermal power unit ; is the working status flag of the thermal power unit , 1 indicates that the unit is in the working state, and 0 indicates that the unit is in the shutdown state; , is the upper ramp / down ramp limit of the thermal power unit ; , is the minimum continuous operation / shutdown time of the thermal power unit .

[0175] The start - stop cost of the thermal power unit is:

[0176]

[0177]

[0178] The start - stop cost of the thermal power unit is: .

[0179] All transmission lines need to meet the line transmission constraints, and the line transmission constraints are:

[0180]

[0181]

[0182]

[0183] Where: is the transmission power of the transmission line at during the period; is the upper limit of the transmission power of the transmission line at time period; is the voltage phase angle of node at time period; , is the upper / lower limit of the voltage phase angle of node m.

[0184] At this time, the electric-hydrogen coupling system also needs to follow the energy balance constraint during operation, as follows:

[0185]

[0186] In the formula: is the hydrogen production of the electrolyzer at node in scenario at time period; is the hydrogen production of the conventional hydrogen production source at node in scenario at time period; is the hydrogen inflow of all pipelines at time period; is the hydrogen outflow of all pipelines at time period; is the hydrogen load at node at time period; , is the hydrogen storage / injection volume of the hydrogen storage device at node at time period.

[0187] In the above embodiment, by obtaining the first power generation power corresponding to the renewable energy of each node of the electric-hydrogen coupling system, the second power generation power consumed by the thermal power unit during operation, the input power of the electrolyzer, and the transmission power of all transmission lines in a random scenario, it is possible to accurately determine whether the electric-hydrogen coupling system is in a power balance state.

[0188] In an exemplary embodiment, for the dynamic characteristic modeling of the electrolyzer, other electrolyzer modeling can be adopted, such as:

[0189] Electrolyzer power-voltage linearization model: For the non-linear relationship directly existing between the input current and the input power of the electrolyzer, through the piecewise linearization method, slack variables and are introduced to decouple the coupling relationship between the two.

[0190]

[0191]

[0192] In the formula: 、 = 1 indicates that the electrolyzer is in standby or shutdown state, and vice versa; is the number of segments; w is a special ordered variable with at most 2 non-zero values, where at most 2 adjacent variables are positive. This special set can introduce 0-1 variables to establish:

[0193]

[0194]

[0195]

[0196]

[0197]

[0198] Electrolyzer electricity-hydrogen conversion model: , where: is the Faraday efficiency; F is the Faraday constant; is the molar mass of; is the number of electrolysis reactors.

[0199] Electrolyzer operating range model:

[0200] Lower and upper limit constraints on the operating current of the electrolyzer: , where: 、 are the lower and upper limits of the operating current of the electrolyzer, respectively.

[0201] Lower and upper limit constraints on the operating power of the electrolyzer: , where: 、 are the upper and lower limits of the power of the electrolyzer, respectively; is a non-simultaneous 0-1 variable for the hydrogen fuel cell and the electrolyzer ( = 1 indicates that the electrolyzer is operating; = 0 indicates that the hydrogen fuel cell is operating).

[0202] In an exemplary embodiment, with the development of the hydrogen energy industry chain, electrolytic hydrogen production serves as a communication bridge connecting the power system and the hydrogen energy system, and the energy conversion characteristics of the electrolyzer also affect the energy flow and coupling relationship between the two systems. However, existing technologies mostly focus on the research of electrolytic hydrogen production technology itself or ignore the impact of the working characteristics of the electrolyzer on the power-hydrogen system. Therefore, this application analyzes the working characteristics of the electrolyzer, proposes a refined modeling of the electrolyzer suitable for system operation research, and then constructs a hydrogen energy system model based on the hydrogen transmission pipeline network, constructs a hydrogen energy system model under the electrolytic hydrogen production scenario, takes into account the impact of real-time electricity prices and hydrogen transmission pipelines, proposes an optimal operation model for the hydrogen energy system, derives a calculation method for the marginal cost of hydrogen nodes, establishes an architecture framework for the power-hydrogen coupling system, analyzes the structural characteristics of the subsystems and the working characteristics of the electrolyzer, uses the stochastic scenario generation method to establish an uncertainty model for new energy output, and then constructs a power-hydrogen coupling system with the working characteristics of the electrolyzer and the volatility of new energy, and proposes a two-stage stochastic optimization model to achieve the coordinated operation of the power-hydrogen coupling system.

[0203] It should be understood that although the steps in the flowcharts involved in the above embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or steps in other steps.

[0204] Based on the same inventive concept, the embodiments of this application also provide a hydrogen production device for implementing the hydrogen production method involved above. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the hydrogen production device provided below can refer to the limitations on the hydrogen production method in the above text, and will not be repeated here.

[0205] In an exemplary embodiment, as Figure 4 shown, a hydrogen production device is provided, which is applied to a power-hydrogen coupling system. The power-hydrogen coupling system includes an electrolyzer; it includes: an electrolyzer working information acquisition module 100, an energy conversion efficiency detection module 200, a hydrogen production rate correction module 300, a hydrogen production control information generation module 400, and a hydrogen production control module 500, where:

[0206] The electrolytic cell working information acquisition module 100 is used to acquire the working current information and working voltage information of the electrolytic cell when it is detected that the electrolytic cell is in a power balance state;

[0207] The energy conversion efficiency detection module 200 is used to detect the initial hydrogen production rate of the electrolytic cell based on the working current information, and detect the energy conversion efficiency of the electrolysis-hydrogen coupling system based on the initial hydrogen production rate, working voltage information and working current information;

[0208] The hydrogen production rate correction module 300 is used to correct the initial hydrogen production rate according to the energy conversion efficiency and the electrical resource attribute information of the electrolysis-hydrogen coupling system under the current working condition to obtain the actual hydrogen production rate;

[0209] The hydrogen production control information generation module 400 is used to generate the hydrogen production control information when the hydrogen production consumption resources of the electrolysis-hydrogen coupling system are minimized based on the electrical resource attribute information and the actual hydrogen production rate, where the hydrogen production control information characterizes the change of the hydrogen production rate of the electrolysis-hydrogen coupling system with the electrical resource attribute information;

[0210] The hydrogen production control module 500 is used to control the electrolysis-hydrogen coupling system to perform hydrogen production operations based on the hydrogen production control information.

[0211] In one embodiment, the energy conversion efficiency detection module 200 is further used to generate the initial hydrogen production rate and electric power information of the electrolytic cell based on the working current information and the working current information; determine the energy conversion efficiency of the electrolysis-hydrogen coupling system based on the electric power information and the initial hydrogen production rate.

[0212] In one embodiment, the electrolytic cell includes an electrode and an electrolyte; the electrolytic cell working information acquisition module 100 is further used to detect the reversible electrolysis voltage information of the electrolytic cell, the surface hydrogen coverage rate of the electrode, and the relative volume between hydrogen and the electrolyte; detect the activation overvoltage information of the electrolytic cell based on the surface hydrogen coverage rate, and detect the ohmic overvoltage information of the electrolytic cell based on the relative volume between hydrogen and the electrolyte; generate the working voltage information of the electrolytic cell based on the reversible electrolysis voltage information, activation overvoltage information and ohmic overvoltage information.

[0213] In one embodiment, the electric-hydrogen coupling system further includes an auxiliary starting system; the electrolyzer operating information acquisition module 100 is further configured to detect the heat generation information, heat dissipation information, start-stop resource consumption information, and start-stop duration information of the electrolyzer, as well as the heat supply information of the auxiliary starting system under the current working condition; determine the operating temperature information of the electrolyzer based on the heat generation information, heat dissipation information, and heat supply information; detect whether the start-stop state of the electrolyzer is normal based on the start-stop resource consumption information and start-stop duration information; when the operating temperature information indicates that the operating temperature of the electrolyzer is within the preset temperature safety range and the start-stop state of the electrolyzer is normal, obtain the input power information and output power information of the electrolyzer; predict the operating current information and operating voltage information of the electrolyzer when it is in a power balance state based on the input power information and output power information.

[0214] In one embodiment, the electric-hydrogen coupling system includes a hydrogen storage device. The electrolyzer is connected to the hydrogen storage device through a pipeline, and a valve is provided between the pipeline and the hydrogen storage device; the hydrogen production device further includes a hydrogen transmission module, and the hydrogen transmission module is configured to detect the hydrogen flow information and hydrogen stock information in the pipeline; detect the hydrogen transmission efficiency of the pipeline based on the hydrogen flow information and hydrogen stock information; control the valve to open when the hydrogen transmission efficiency is within the preset hydrogen transmission safety efficiency threshold, wherein when the valve is open, the hydrogen in the pipeline is transmitted to the hydrogen storage device.

[0215] In one embodiment, the hydrogen transmission module is further configured to detect the hydrogen load information of the electric-hydrogen coupling system, the hydrogen inflow information and hydrogen outflow information of the pipeline, and generate the hydrogen production information of the electrolyzer based on the hydrogen production control information; generate the marginal resource consumption information of the electric-hydrogen coupling system based on the hydrogen production information, hydrogen inflow information, hydrogen outflow information, and hydrogen load information, and detect whether the hydrogen supply in the electric-hydrogen coupling system is sufficient based on the marginal resource consumption information; control the valve to open when the hydrogen transmission efficiency is within the preset hydrogen transmission safety efficiency threshold and the hydrogen supply is sufficient.

[0216] In one embodiment, the hydrogen production device further includes a hydrogen storage module, and the hydrogen storage module is configured to obtain the hydrogen storage information, hydrogen release information, storage loss information, and historical hydrogen storage information of the previous time period of the hydrogen storage device; detect whether the hydrogen storage state of the hydrogen storage device is normal based on the hydrogen storage information, hydrogen release information, storage loss information, and historical hydrogen storage information; repair the hydrogen storage device when the hydrogen storage state of the hydrogen storage device is abnormal.

[0217] In one embodiment, the electric-hydrogen coupling system includes multiple energy units, which are connected by power transmission lines; the hydrogen production control information generation module 400 is further configured to detect the unit power generation information of the multiple energy units, the input power information of the electrolyzer, and the transmission power information of all power transmission lines in the electric-hydrogen coupling system under multiple random scenarios; based on the unit power generation information, the input power information, and the transmission power information, detect whether the electric-hydrogen coupling system is in a power balance state; in the case where the electric-hydrogen coupling system is in a power balance state, generate hydrogen production control information when the hydrogen production resource consumption of the electric-hydrogen coupling system is minimized based on the electrical resource attribute information and the actual hydrogen production rate.

[0218] Each module in the above hydrogen production device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each of the above modules.

[0219] In an exemplary embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 5 shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be achieved through WIFI, a mobile cellular network, near field communication (NFC), or other technologies. The computer program, when executed by the processor, implements a hydrogen production method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the outer shell of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0220] Those skilled in the art can understand that Figure 5The structure shown is a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. Specifically, the computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0221] In one embodiment, a computer device is further provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0222] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0223] In one embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0224] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, artificial intelligence (AI) processors, etc., without limitation.

[0225] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in the present application.

[0226] The above embodiments only illustrate several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for producing hydrogen, characterized in that: Applied to an electric-hydrogen coupling system, the electric-hydrogen coupling system includes an electrolyzer; the method includes: When it is detected that the electrolytic cell is in a power balance state, obtaining operating current information and operating voltage information of the electrolytic cell; Based on the working current information, detecting the initial hydrogen production rate of the electrolyzer, and based on the initial hydrogen production rate, the working voltage information and the working current information, detecting the energy conversion efficiency of the electric-hydrogen coupling system; According to the energy conversion efficiency and the electrical resource attribute information of the electric-hydrogen coupling system under the current working condition, the initial hydrogen production rate is corrected to obtain an actual hydrogen production rate; Based on the electrical resource attribute information and the actual hydrogen production rate, generating hydrogen production control information when the hydrogen production resource consumption of the electric-hydrogen coupling system is the minimum, wherein the hydrogen production control information represents the change of the hydrogen production rate of the electric-hydrogen coupling system with the electrical resource attribute information; Based on the hydrogen production control information, the electric-hydrogen coupling system is controlled to perform a hydrogen production operation.

2. The method according to claim 1, characterized in that: The electrolytic cell includes electrodes and an electrolyte; obtaining the operating voltage information of the electrolytic cell includes: Detecting the reversible electrolysis voltage information of the electrolytic cell, the surface hydrogen coverage of the electrode, and the relative volume between the hydrogen and the electrolyte; Based on the surface hydrogen coverage, detecting activation overvoltage information of the electrolytic cell, and based on the relative volume between the hydrogen and the electrolyte, detecting ohmic overvoltage information of the electrolytic cell; Based on the reversible electrolysis voltage information, the activation overvoltage information and the ohmic overvoltage information, the operating voltage information of the electrolytic cell is generated.

3. The method according to claim 1, characterized in that: The electric-hydrogen coupling system further includes an auxiliary starting system; when it is detected that the electrolyzer is in a power balance state, obtaining the working current information and the working voltage information of the electrolyzer includes: Detecting the heat generation information, heat dissipation information, start / stop resource consumption information and start / stop duration information of the electrolytic cell, and the heating information of the auxiliary starting system under the current working condition; Determining the operating temperature information of the electrolytic cell based on the heat generation information, the heat dissipation information and the heat supply information; Based on the start-stop resource consumption information and the start-stop duration information, detecting whether the start-stop state of the electrolytic cell is normal; When the operating temperature information indicates that the operating temperature of the electrolytic cell is within a preset temperature safety range and the start and stop states of the electrolytic cell are normal, obtaining input power information and output power information of the electrolytic cell; Based on the input power information and the output power information, the operating current information and the operating voltage information of the electrolytic cell when it is in a power balance state are predicted.

4. The method according to claim 1, characterized in that The electric-hydrogen coupling system includes a hydrogen storage device, the electrolyzer is connected to the hydrogen storage device via a pipeline, and a valve is provided between the pipeline and the hydrogen storage device; after controlling the electric-hydrogen coupling system to perform a hydrogen production operation based on the hydrogen production control information, the method further includes: Detecting hydrogen flow information and hydrogen inventory information in the pipeline; Based on the hydrogen flow information and the hydrogen inventory information, detecting the hydrogen transmission efficiency of the pipeline; When the hydrogen transmission efficiency is within a preset hydrogen transmission safety efficiency threshold, the valve is controlled to open, wherein when the valve is opened, the hydrogen in the pipeline is transmitted to the hydrogen storage device.

5. The method according to claim 4, characterized in that When the hydrogen transmission efficiency is within a preset hydrogen transmission safety efficiency threshold, controlling the valve to open further includes: Detecting hydrogen load information of the electric-hydrogen coupling system, hydrogen inflow information and hydrogen outflow information of the pipeline, and generating hydrogen production information of the electrolyzer based on hydrogen production control information; generating marginal resource consumption information of the electric-hydrogen coupling system based on the hydrogen production information, the hydrogen inflow information, the hydrogen outflow information and the hydrogen load information, and detecting whether the hydrogen supply in the electric-hydrogen coupling system is sufficient based on the marginal resource consumption information; When the hydrogen transmission efficiency is within a preset hydrogen transmission safety efficiency threshold and the hydrogen supply is sufficient, the valve is controlled to open.

6. The method according to claim 4, characterized in that After controlling the valve to open, the method further includes: Obtaining hydrogen storage information, hydrogen release information, storage loss information, and historical hydrogen storage information of the previous time period of the hydrogen storage device; Based on the hydrogen storage information, the hydrogen release information, the storage loss information, and the historical hydrogen storage information, detecting whether the hydrogen storage state of the hydrogen storage device is normal; When the hydrogen storage state of the hydrogen storage device is abnormal, the hydrogen storage device is repaired.

7. The method according to claim 1, characterized in that The electric-hydrogen coupling system includes a plurality of energy units, and the plurality of energy units are connected by transmission lines; the hydrogen production control information generated when the hydrogen production resource consumption of the electric-hydrogen coupling system is minimized based on the electrical resource attribute information and the actual hydrogen production rate also includes: Detecting the unit power generation information of multiple energy units of the electric-hydrogen coupling system in multiple random scenarios, the input power information of the electrolyzer, and the transmission power information of all the transmission lines; Based on the unit power generation information, the input power information and the transmission power information, detecting whether the electric-hydrogen coupling system is in a power balance state; When the electric-hydrogen coupling system is in a power balance state, hydrogen production control information when the amount of hydrogen production resources consumed by the electric-hydrogen coupling system is minimized is generated based on the electrical resource attribute information and the actual hydrogen production rate.

8. A hydrogen production device, characterized in that: Applicable to an electric-hydrogen coupling system, the electric-hydrogen coupling system includes an electrolyzer; the device includes: An electrolytic cell working information acquisition module, used to acquire working current information and working voltage information of the electrolytic cell when detecting that the electrolytic cell is in a power balance state; an energy conversion efficiency detection module, used to detect the initial hydrogen production rate of the electrolyzer based on the working current information, and to detect the energy conversion efficiency of the electric-hydrogen coupling system based on the initial hydrogen production rate, the working voltage information and the working current information; A hydrogen production rate correction module, used to correct the initial hydrogen production rate according to the energy conversion efficiency and the electrical resource attribute information of the electric-hydrogen coupling system under the current working condition to obtain an actual hydrogen production rate; A hydrogen production control information generation module, used to generate hydrogen production control information when the hydrogen production resource consumption of the electric-hydrogen coupling system is the minimum based on the electrical resource attribute information and the actual hydrogen production rate, wherein the hydrogen production control information represents the change of the hydrogen production rate of the electric-hydrogen coupling system with the electrical resource attribute information; A hydrogen production control module is used to control the electric-hydrogen coupling system to perform hydrogen production operations based on the hydrogen production control information.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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