Control method, device, medium and system for water electrolysis hydrogen production system

Abstract

The present application provides a control method, device, medium and system for a water electrolysis hydrogen production system, wherein the water electrolysis hydrogen production system is connected to the output power of a new energy power station, and the method includes: obtaining meteorological data corresponding to the new energy power station and historical power data of the new energy power station; predicting the predicted power data of the new energy power station in the future target time period according to the meteorological data and historical power data; adjusting the operating power and start-stop state of the hydrogen production equipment in the water electrolysis hydrogen production system according to the current power and predicted power data of the new energy power station. The method can avoid frequent start-stop of the hydrogen production equipment by adjusting the standby mode of the hydrogen production equipment through power prediction of the new energy power station, which helps to improve the coupling of new energy power generation and hydrogen production equipment, so that the control strategy of the water electrolysis hydrogen production system is more accurate, and the water electrolysis hydrogen production system can timely absorb the new energy power generation power, thereby reducing the cost of hydrogen production.

Description

Technical Field

[0001] The present application belongs to the technical field of hydrogen production, and specifically relates to a control method, device, medium and system for a water electrolysis hydrogen production system. Background Art

[0002] At present, the installed capacity of new energy has increased significantly, but at the same time, the rate of wind and solar power abandonment has increased in some areas, and the problem of new energy consumption is prominent. Using new energy to produce hydrogen is a better solution, but the production of hydrogen by new energy power generation has the problem of power fluctuation and unstable operation.

[0003] The control method currently used in the new energy water electrolysis hydrogen production system has poor foresight, resulting in defects in the control method used for hydrogen production, such as frequent start and stop of hydrogen production equipment and poor adaptability to the volatility of new energy electricity, which leads to high cost of hydrogen production.

[0004] Therefore, how to reduce the hydrogen production cost of the new energy water electrolysis hydrogen production system is an urgent problem to be solved. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, a control method, device, medium and system for a water electrolysis hydrogen production system are proposed. The control method, device, medium and system for a water electrolysis hydrogen production system can reduce the hydrogen production cost of the new energy water electrolysis hydrogen production system.

[0006] This application provides the following solution.

[0007] In a first aspect, the present application provides a control method for a water electrolysis hydrogen production system, wherein the water electrolysis hydrogen production system is connected to the output power of a new energy power station, and the hydrogen production equipment in the water electrolysis hydrogen production system includes a first hydrogen production equipment and a second hydrogen production equipment, and the first hydrogen production equipment is in operation, and the method includes:

[0008] Obtain meteorological data corresponding to the new energy power station and historical power data of the new energy power station;

[0009] Based on meteorological data and historical power data, predict the power data of new energy power stations in the future target time period;

[0010] According to the current power and predicted power data of the renewable energy power station, the predicted power change value of the renewable energy power station in the future target time period is determined;

[0011] If the second hydrogen production equipment is in a cold standby state, and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment, the second hydrogen production equipment is cold started;

[0012] If the second hydrogen production equipment is in hot standby state, and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment, the second hydrogen production equipment is hot started.

[0013] In some possible embodiments, the method further includes:

[0014] If the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a downward trend within the target time period, the first hydrogen production equipment is stopped and enters the cold standby mode.

[0015] In some possible embodiments, the method further includes:

[0016] If the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a trend of decreasing and then increasing within the target time period, the first hydrogen production equipment is stopped and enters the hot standby mode.

[0017] In some possible embodiments, determining the predicted power change value of the renewable energy power station in the future target time period according to the current power and predicted power data of the renewable energy power station includes:

[0018] Calculate the difference between the predicted power indicated by the predicted power data and the current power of the new energy power station to obtain the difference data within the target time period;

[0019] An average of the differences indicated by the difference data is determined to obtain a predicted power change value.

[0020] In some possible embodiments, the method further includes:

[0021] If the sum of the predicted power change value and the current power of the first hydrogen production equipment is within the operating power range of the first hydrogen production equipment, the start and stop states of the first hydrogen production equipment and the second hydrogen production equipment are maintained, so that the first hydrogen production equipment operates with the output power change of the new energy power station.

[0022] In some possible embodiments, when the first hydrogen production equipment enters the cold standby mode, the actions of hydrogen decompression, nitrogen purge and nitrogen sealing are performed.

[0023] In some possible embodiments, when the first hydrogen production equipment enters the hot standby mode, the hydrogen pressure relief and hydrogen sealing operations are performed, and a slight positive pressure of hydrogen is maintained.

[0024] In a second aspect, the present application provides a control device for a water electrolysis hydrogen production system, wherein the water electrolysis hydrogen production system is connected to the output power of a new energy power station, the hydrogen production equipment in the water electrolysis hydrogen production system includes a first hydrogen production equipment and a second hydrogen production equipment, the first hydrogen production equipment is in operation, and the device of the water electrolysis hydrogen production system includes:

[0025] An acquisition module is used to obtain meteorological data corresponding to the new energy power station and historical power data of the new energy power station;

[0026] A prediction module is used to predict the power data of the new energy power station in the future target time period based on meteorological data and historical power data;

[0027] A determination module, used to determine the predicted power change value of the renewable energy power station in the future target time period according to the current power and predicted power data of the renewable energy power station;

[0028] A cold start module, configured to cold start the second hydrogen production equipment if the second hydrogen production equipment is in a cold standby state and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment;

[0029] The hot start module is used to hot start the second hydrogen production equipment if the second hydrogen production equipment is in a hot standby state and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment.

[0030] In a third aspect, the present application provides a computer-readable storage medium storing a program, which, when executed by a multi-core processor, enables the multi-core processor to execute the control method of the water electrolysis hydrogen production system.

[0031] In a fourth aspect, the present application provides a water electrolysis hydrogen production system, which is connected to the output power of the new energy power station and is controlled by the control device of the water electrolysis hydrogen production system.

[0032] The control method of the water electrolysis hydrogen production system provided in the present application predicts the power of the new energy power station in the future target time period through the meteorological data and historical power data of the new energy power station, and adjusts the operating power and start-stop status of the hydrogen production equipment in the water electrolysis hydrogen production system according to the obtained predicted power data. In this way, the control method of the water electrolysis hydrogen production system provided in the present application adjusts the hot start or cold start of the water electrolysis hydrogen production system by predicting the power of the new energy power station. On the one hand, it can timely absorb the new energy power generation power, and on the other hand, it can also avoid frequent start-stop of the hydrogen production equipment, both of which can reduce the cost of hydrogen production.

[0033] Other advantages of the present application will be explained in more detail with reference to the following description and drawings.

[0034] It should be understood that the above description is only an overview of the technical solution of the present application, so that the technical means of the present application can be more clearly understood and implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are specifically described below by way of example. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The advantages and benefits described herein and other advantages and benefits will be apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only used for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A schematic flow chart of a control method for a water electrolysis hydrogen production system provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of a control strategy for a water electrolysis hydrogen production system provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of a control device for a water electrolysis hydrogen production system provided in an embodiment of the present application.

[0039] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0041] In the description of the embodiments of the present application, it should be understood that terms such as "including" or "having" are intended to indicate the presence of disclosed features, numbers, steps, behaviors, components, parts, or a combination thereof in the present specification, and do not exclude the possibility of the presence of one or more other features, numbers, steps, behaviors, components, parts, or a combination thereof.

[0042] Unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in this article is merely a way to describe the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0043] The terms "first", "second", etc. are used only to distinguish the same or similar technical features for the convenience of description, and should not be understood as indicating or implying the relative importance or quantity of these technical features. Thus, the features defined by "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the term "plurality" means two or more than two.

[0044] It should also be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] Figure 1 A flow chart of a control method for a water electrolysis hydrogen production system provided in an embodiment of the present application. In an embodiment of the present application, the water electrolysis hydrogen production system is connected to the output power of a new energy power station. In this process, from the perspective of equipment, the execution subject can be one or more electronic devices; from the perspective of the program, the execution subject can be the program installed on these electronic devices.

[0046] like Figure 1 As shown, the control method of the water electrolysis hydrogen production system provided in the embodiment of the present application includes:

[0047] S101: Obtain meteorological data corresponding to the new energy power station and historical power data of the new energy power station.

[0048] It should be noted that the meteorological data corresponding to the new energy power station obtained in the embodiment of the present application may include historical meteorological data, current real-time meteorological data and future predicted meteorological data, which is not limited in the embodiment of the present application. The historical meteorological data can be matched with the historical power data, and the current real-time meteorological data and / or future predicted meteorological data are used to predict the future power data.

[0049] S102: Predict power data of the new energy power station in a future target time period based on meteorological data and historical power data.

[0050] It should be noted that the future target time period may refer to a time period from the current moment to a certain moment in the future, or may refer to a time period starting from a certain moment in the future, and the embodiments of the present application do not limit this.

[0051] S103: According to the current power and predicted power data of the new energy power station, the operating power and start / stop status of the hydrogen production equipment in the water electrolysis hydrogen production system are adjusted.

[0052] In practical applications, the difference data within the target time period can be obtained by calculating the difference between the predicted power indicated by the predicted power data and the current power of the new energy power station. The difference data may include the difference between the predicted power at multiple moments within the target time period and the current power of the new energy power station. The power fluctuation of the new energy power station within the future target time period can be understood through the difference data. Then, the operating power and start-stop status of the hydrogen production equipment in the water electrolysis hydrogen production system can be adjusted according to the difference data.

[0053] The following will specifically introduce how to adjust the operating power and start / stop status of the hydrogen production equipment in the water electrolysis hydrogen production system based on the difference data.

[0054] like Figure 2 As shown, in an embodiment of the present application, the hydrogen production equipment in the water electrolysis hydrogen production system may include a first hydrogen production equipment and a second hydrogen production equipment. Among them, the first hydrogen production equipment may be in an operating state, and the second hydrogen production equipment may be in a standby state. The first hydrogen production equipment may be one or more hydrogen production equipment, and the second hydrogen production equipment may also be the first or more hydrogen production equipment, which is not limited in this embodiment of the present application. Step S103 in the control method of the water electrolysis hydrogen production system provided in the embodiment of the present application may specifically include:

[0055] S203: Determine a predicted power change value of the new energy power station in a future target time period according to the current power and predicted power data of the new energy power station.

[0056] S204: If the second hydrogen production equipment is in a cold standby state, and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment, then the second hydrogen production equipment is cold started.

[0057] S205: If the second hydrogen production equipment is in hot standby state, and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment, then hot start the second hydrogen production equipment.

[0058] S206: If the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a downward trend within the target time period, the first hydrogen production equipment is stopped and enters a cold standby mode.

[0059] S207: If the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a trend of decreasing and then increasing within the target time period, the first hydrogen production equipment is stopped and enters the hot standby mode.

[0060] In the embodiment of the present application, the startup mode of the hydrogen production equipment is determined according to the state of the hydrogen production equipment, which can speed up the startup speed of the hydrogen production equipment, avoid frequent start and stop of the hydrogen production equipment, and reduce the loss of the hydrogen production equipment. On the other hand, the present application controls the hydrogen production equipment to determine the type of standby mode that the hydrogen production equipment enters according to the trend of the predicted power data in the target time period, which can increase the startup rate of the hydrogen production equipment while reducing the standby power consumption of the hydrogen production equipment, thereby reducing the cost of hydrogen production.

[0061] It should be noted that the present application may first determine the average of the difference data indicating the predicted power and the current power of the new energy power station to obtain the predicted power change value △P. The predicted power change value △P may reflect the distribution of the difference data to a certain extent.

[0062] If the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment is within the operating power range of the first hydrogen production equipment, the start and stop states of the first hydrogen production equipment and the second hydrogen production equipment are maintained, so that the first hydrogen production equipment operates with the output power of the new energy power station. It should be noted that the operating power range of the first hydrogen production equipment is usually the range from the minimum operating power of the first hydrogen production equipment to the rated operating power of the first equipment. The minimum operating power of the first hydrogen production equipment can be 0 or a smaller power value, which is not limited in the embodiments of the present application.

[0063] In the embodiment of the present application, if the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment is within the operating power range of the first hydrogen production equipment, it means that if the predicted power change value △P is a positive number, the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment is less than the rated power of the first hydrogen production equipment; if the predicted power change value △P is a negative number, the absolute value of the predicted power change value △P is less than the current power Pwl of the first hydrogen production equipment. The first hydrogen production equipment can roughly keep up with the output power of the new energy power station by variable power operation within the first time period, without starting the second hydrogen production equipment or stopping the first hydrogen production equipment.

[0064] Under the same premise, if the difference between the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment and the rated power Prl of the first equipment is greater than the starting power of the second equipment, then the present application can start the second hydrogen production equipment in advance. It should be noted that in the embodiment of the present application, the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment is greater than the rated power Prl of the first equipment. The first hydrogen production equipment cannot keep up with the output power of the new energy power station by variable power operation roughly within the first time period, and the load exceeding the rated power of the first hydrogen production equipment can meet the starting power of the second equipment. Therefore, the embodiment of the present application can start the second hydrogen production equipment in advance, and there is no need to wait until the output power of the new energy power station actually meets the starting conditions of the second hydrogen production equipment before starting the second hydrogen production equipment. In this way, the embodiment of the present application provides a method of starting the hydrogen production equipment in advance by predicting the power of the new energy power station, avoiding long-term overload operation of the hydrogen production equipment, making the control strategy of the water electrolysis hydrogen production system more accurate, and the water electrolysis hydrogen production system can consume the new energy power generation power in time, thereby reducing the cost of hydrogen production.

[0065] In actual applications, if the second hydrogen production equipment is in a cold standby state before startup, the second hydrogen production equipment can enter a cold start procedure when it is started; if the second hydrogen production equipment is in a hot standby state before startup, the second hydrogen production equipment can enter a hot start procedure when it is started. The embodiments of the present application are not limited here.

[0066] Under the same premise, if the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment is less than 0, the first hydrogen production equipment is stopped in advance and prepared for operation. It should be noted that if the sum of the predicted power change value △P and the current power Pwl of the first hydrogen production equipment is less than 0, it means that the electrolysis water hydrogen production system can also absorb the new energy power generation power without running the first hydrogen production equipment in the target time period. Therefore, the embodiment of the present application can stop the first hydrogen production equipment in advance and prepare for operation, and there is no need to wait until the output power of the new energy power station actually meets the stop condition of the first hydrogen production equipment before stopping the operation of the first hydrogen production equipment. In this way, the control method of the electrolysis water hydrogen production system provided in the embodiment of the present application predicts the power of the new energy power station, stops the operation of the hydrogen production equipment in advance, avoids the long-term low-load operation of the hydrogen production equipment, and makes the control strategy of the electrolysis water hydrogen production system more accurate. The electrolysis water hydrogen production system can absorb the new energy power generation power in time, thereby reducing the cost of hydrogen production.

[0067] In actual applications, if the difference data shows a downward trend within the target time period, the first hydrogen production equipment can enter the cold standby mode when it is in standby mode; if the difference data shows a downward and then upward trend within the target time period, the first hydrogen production equipment can enter the hot standby mode when it is in standby mode. It should be noted that when the first hydrogen production equipment enters the cold standby mode, it can perform the actions of hydrogen pressure relief, nitrogen purge and nitrogen sealing. When the first hydrogen production equipment enters the hot standby mode, it can perform the actions of hydrogen pressure relief and hydrogen sealing, and maintain a slight positive pressure of hydrogen. When the first hydrogen production equipment performs the actions of hydrogen pressure relief and hydrogen sealing, and maintains a slight positive pressure of hydrogen, it is necessary to consider safety factors and the pressure that the fuel cell itself can withstand. In this way, the control method of the water electrolysis hydrogen production system provided in the embodiment of the present application predicts the power of the new energy power station, so that the standby mode of the hydrogen production equipment can be adjusted according to the changing trend of the difference data, thereby avoiding frequent start and stop of the hydrogen production equipment, helping to improve the coupling of new energy power generation and hydrogen production equipment, and making the control strategy of the water electrolysis hydrogen production system more accurate. The water electrolysis hydrogen production system can absorb the new energy power generation power in time, thereby reducing the cost of hydrogen production.

[0068] The control method of the water electrolysis hydrogen production system provided in the present application predicts the power of the new energy power station in the future target time period through the meteorological data and historical power data of the new energy power station, and adjusts the operating power and start-stop status of the hydrogen production equipment in the water electrolysis hydrogen production system according to the obtained predicted power data. In this way, the control method of the water electrolysis hydrogen production system provided in the present application adjusts the operating mode of the water electrolysis hydrogen production system in advance through the power prediction of the new energy power station. On the one hand, it can timely absorb the new energy power generation power, and on the other hand, it can also avoid frequent start-stop of the hydrogen production equipment, which can reduce the cost of hydrogen production from both aspects.

[0069] In the description of this specification, the description with reference to the terms "some possible embodiments", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application, and the above terms do not necessarily represent the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0070] About the method flow chart of the present application embodiment, some operations are described as different steps performed in a certain order. Such flow chart belongs to illustrative and non-restrictive. Some steps described in this article can be grouped together and performed in a single operation, or some steps can be divided into multiple sub-steps and can be performed in an order different from that shown in this article. Each step shown in the flow chart can be realized in any way by any circuit structure and / or tangible mechanism (for example, by software, hardware (for example, the logical function realized by processor or chip) etc. running on computer equipment and / or any combination thereof).

[0071] Those skilled in the art will appreciate that, in the method described in the above specific implementation, the writing order of each step does not mean a strict execution order, and the specific execution order of each step should be determined by its function and possible internal logic.

[0072] According to the control method of the water electrolysis hydrogen production system provided in the above embodiment, the embodiment of the present application also provides a control device of the water electrolysis hydrogen production system.

[0073] The water electrolysis hydrogen production system is connected to the output power of the new energy power station. The hydrogen production equipment in the water electrolysis hydrogen production system includes a first hydrogen production equipment and a second hydrogen production equipment. The first hydrogen production equipment is in operation. Figure 3 As shown, the control device of the water electrolysis hydrogen production system includes:

[0074] An acquisition module 100 is used to obtain meteorological data corresponding to the new energy power station and historical power data of the new energy power station;

[0075] The prediction module 200 is used to predict the power data of the new energy power station in the future target time period according to the meteorological data and the historical power data;

[0076] The determination module 300 is used to determine the predicted power change value of the new energy power station in the future target time period according to the current power and predicted power data of the new energy power station;

[0077] A cold start module 400 is used to cold start the second hydrogen production equipment if the second hydrogen production equipment is in a cold standby state and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment;

[0078] The hot start module 500 is used to hot start the second hydrogen production equipment if the second hydrogen production equipment is in hot standby state and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first equipment is greater than the starting power of the second hydrogen production equipment.

[0079] In an embodiment of the present application, the control device of the water electrolysis hydrogen production system also includes: a cold standby module, which is used to stop the operation of the first hydrogen production equipment and enter the cold standby mode if the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a downward trend within the target time period.

[0080] In an embodiment of the present application, the control device of the water electrolysis hydrogen production system also includes: a hot standby module, which is used to stop the operation of the first hydrogen production equipment and enter the hot standby mode if the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a trend of decreasing and then increasing within the target time period.

[0081] In an embodiment of the present application, the determination module is specifically used to calculate the difference between the predicted power indicated by the predicted power data and the current power of the new energy power station to obtain the difference data within the target time period; determine the average of the difference indicated by the difference data to obtain the predicted power change value.

[0082] In an embodiment of the present application, the control device of the water electrolysis hydrogen production system also includes: a variable power operation module, which is used to maintain the start and stop states of the first hydrogen production equipment and the second hydrogen production equipment if the sum of the predicted power change value and the current power of the first hydrogen production equipment is within the operating power range of the first hydrogen production equipment, so that the first hydrogen production equipment can operate with variable power following the output power of the new energy power station.

[0083] In the embodiment of the present application, when the first hydrogen production equipment enters the cold standby mode, the hydrogen pressure relief, nitrogen purge and nitrogen sealing can be performed. When the first hydrogen production equipment enters the hot standby mode, the hydrogen pressure relief and hydrogen sealing can be performed, and the hydrogen slightly positive pressure can be maintained.

[0084] It should be noted that the device in the embodiment of the present application can implement the various processes of the embodiment of the aforementioned method and achieve the same effects and functions, which will not be repeated here.

[0085] According to some embodiments of the present application, a control device for a water electrolysis hydrogen production system according to an embodiment of the present application is provided, for executing Figure 1 The control method of the water electrolysis hydrogen production system shown in the figure comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method described in the above embodiment.

[0086] According to some embodiments of the present application, a non-volatile computer storage medium of a control method for a water electrolysis hydrogen production system is provided, on which computer executable instructions are stored. The computer executable instructions are configured to execute the methods described in the above embodiments when run by a processor.

[0087] The embodiment of the present application also provides a water electrolysis hydrogen production system, which is connected to the output power of the new energy power station, and the water electrolysis hydrogen production system is controlled by the control device of the water electrolysis hydrogen production system in the above embodiment.

[0088] Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be achieved by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer-readable storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory, read-only memory, electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. In addition, although the operations of the method of the present application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. In addition, some steps can be omitted, multiple steps can be combined into one step, and / or one step can be decomposed into multiple sub-steps.

[0089] Although the spirit and principle of the present application have been described above with reference to several specific embodiments, it should be understood that the present application is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined. The present application is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims.

Claims

1. A control method for a water electrolysis hydrogen production system, characterized in that: The water electrolysis hydrogen production system is connected to the output power of the new energy power station, the hydrogen production equipment in the water electrolysis hydrogen production system includes a first hydrogen production equipment and a second hydrogen production equipment, the first hydrogen production equipment is in operation, and the method includes: Obtaining meteorological data corresponding to the new energy power station and historical power data of the new energy power station; Predicting the predicted power data of the new energy power station in a future target time period according to the meteorological data and the historical power data; Determining a predicted power change value of the new energy power station in the future target time period according to the current power of the new energy power station and the predicted power data; If the second hydrogen production equipment is in a cold standby state, and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first hydrogen production equipment is greater than the starting power of the second hydrogen production equipment, cold start the second hydrogen production equipment; If the second hydrogen production equipment is in a hot standby state, and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first hydrogen production equipment is greater than the starting power of the second hydrogen production equipment, hot start the second hydrogen production equipment; If the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a downward trend within the target time period, the first hydrogen production equipment is stopped and enters a cold standby mode; If the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a trend of decreasing and then increasing within the target time period, the first hydrogen production equipment is stopped and enters the hot standby mode.

2. The method according to claim 1, characterized in that The step of determining the predicted power change value of the new energy power station in the future target time period according to the current power of the new energy power station and the predicted power data includes: Calculating the difference between the predicted power indicated by the predicted power data and the current power of the new energy power station to obtain the difference data within the target time period; An average of the differences indicated by the difference data is determined to obtain a predicted power change value.

3. The method according to claim 1, characterized in that The method further comprises: If the sum of the predicted power change value and the current power of the first hydrogen production equipment is within the operating power range of the first hydrogen production equipment, the start and stop states of the first hydrogen production equipment and the second hydrogen production equipment are maintained, so that the first hydrogen production equipment operates with the output power change of the new energy power station.

4. The method according to claim 1, characterized in that: When the first hydrogen production equipment enters the cold standby mode, the actions of hydrogen pressure relief, nitrogen purge and nitrogen sealing are performed.

5. The method according to claim 1, characterized in that When the first hydrogen production equipment enters the hot standby mode, the hydrogen pressure relief and hydrogen sealing operations are performed, and a slight positive pressure of hydrogen is maintained.

6. A control device for a water electrolysis hydrogen production system, characterized in that: The water electrolysis hydrogen production system is connected to the output power of the new energy power station. The hydrogen production equipment in the water electrolysis hydrogen production system includes a first hydrogen production equipment and a second hydrogen production equipment. The first hydrogen production equipment is in operation. The device of the water electrolysis hydrogen production system includes: An acquisition module, used to obtain meteorological data corresponding to the new energy power station and historical power data of the new energy power station; A prediction module, used to predict the predicted power data of the new energy power station in a future target time period according to the meteorological data and the historical power data; A determination module, configured to determine a predicted power change value of the new energy power station in the future target time period according to the current power of the new energy power station and the predicted power data; a cold start module, configured to cold start the second hydrogen production equipment if the second hydrogen production equipment is in a cold standby state and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first hydrogen production equipment is greater than the starting power of the second hydrogen production equipment; a hot start module, configured to hot start the second hydrogen production equipment if the second hydrogen production equipment is in a hot standby state and the difference between the sum of the predicted power change value and the current power of the first hydrogen production equipment and the rated power of the first hydrogen production equipment is greater than the starting power of the second hydrogen production equipment; A cold standby module, configured to stop the operation of the first hydrogen production equipment and enter a cold standby mode if the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a downward trend within a target time period; The hot standby module is used to stop the operation of the first hydrogen production equipment and enter the hot standby mode if the sum of the predicted power change value and the current power of the first hydrogen production equipment is less than 0, and the predicted power data shows a trend of decreasing and then increasing within the target time period.

7. A computer-readable storage medium storing a program, wherein when the program is executed by a multi-core processor, the multi-core processor executes the method according to any one of claims 1 to 5.

8. A system for producing hydrogen by electrolysis of water, characterized in that: The water electrolysis hydrogen production system is connected to the output power of the new energy power station, and the water electrolysis hydrogen production system is controlled by the control device of the water electrolysis hydrogen production system according to claim 6.

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