A control method and device of a hydrogen storage system, a storage medium and an electronic device

Abstract

The application discloses a control method and device of a hydrogen storage system, a storage medium and an electronic device, and relates to the technical field of energy and power. First, production operation data of an electric hydrogen synthesis ammonia system is acquired. Then, hydrogen state for hydrogen production of the electric hydrogen synthesis ammonia system is determined based on the production operation data. Then, hydrogen storage systems in the electric hydrogen synthesis ammonia system are controlled to perform collaborative charging and discharging of hydrogen according to the hydrogen state for hydrogen production, wherein the hydrogen storage systems include gaseous hydrogen storage devices, solid hydrogen storage devices and / or liquid hydrogen storage devices. Compared with the prior art, the application can efficiently and timely respond to hydrogen quantity changes by dynamically controlling hydrogen storage system distribution and operation strategies based on hydrogen state for hydrogen production of the system under the premise of meeting safe and stable operation of the system, thereby achieving full utilization of the cycle life of the hydrogen storage system and dynamic intelligent distribution of the hydrogen storage capacity, and further improving the overall operation economy of the system.

Description

Technical Field

[0001] This application relates to the field of energy and power technology, specifically to a control method, device, storage medium, and electronic equipment for a hydrogen storage system. Background Technology

[0002] The electro-hydrogen-to-ammonia synthesis system utilizes renewable energy sources such as wind and solar power to electrolyze water and produce hydrogen, which is then used in ammonia synthesis. This system is crucial for achieving large-scale green hydrogen consumption and decarbonization in the chemical industry. Since the total hydrogen production from the water electrolysis system differs from the total hydrogen required by the ammonia synthesis system in each control cycle, a hydrogen storage device of a certain scale is needed to achieve a dynamic balance between the output of the hydrogen production system and the hydrogen consumption flow.

[0003] Currently, the common approach is to configure large-scale gaseous hydrogen storage tanks, supplemented by a certain capacity of solid-state hydrogen storage (titanium-based, magnesium-based, etc.) and organic liquid hydrogen storage devices, to meet the hydrogen storage capacity balance requirements at different time scales. These hydrogen storage devices often operate independently. However, gaseous, solid, and organic liquid hydrogen storage devices differ significantly in response speed, cycle life, hydrogen storage and release efficiency, and start-up and shutdown characteristics. This makes it difficult to maximize the absorption capacity of renewable energy and the overall economic efficiency of the system under varying operating conditions of hydrogen surplus or shortage, while ensuring the stable operation of the ammonia synthesis plant. Summary of the Invention

[0004] In view of this, this application provides a control method, device, storage medium and electronic equipment for a hydrogen storage system. The main purpose is to improve the technical problem that the existing technology is unable to maximize the absorption capacity of renewable energy and the overall economic efficiency of the system while ensuring the stable operation of the ammonia synthesis plant.

[0005] In a first aspect, this application provides a control method for a hydrogen storage system, comprising: Obtain production and operation data from the electro-hydrogen to ammonia synthesis system; Based on the production operation data, the hydrogen production status of the electro-hydrogen-to-ammonia synthesis system is determined; Based on the hydrogen state of the hydrogen used in the hydrogen production, the hydrogen storage system in the electro-hydrogen ammonia synthesis system is controlled to perform coordinated charging and releasing of hydrogen. The hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device.

[0006] Secondly, this application provides a control device for a hydrogen storage system, comprising: The acquisition module is configured to acquire production and operation data of the electro-hydrogen-to-ammonia synthesis system; The determination module is configured to determine the hydrogen production status of the electro-hydrogen-to-ammonia synthesis system based on the production operation data. The control module is configured to control the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system to perform coordinated charging and releasing of hydrogen based on the hydrogen status of the hydrogen used in the hydrogen production. The hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device.

[0007] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0008] Fourthly, this application provides an electronic device including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0009] By employing the above technical solution, this application provides a control method, apparatus, storage medium, and electronic equipment for a hydrogen storage system. First, it acquires the production and operation data of an electro-hydrogen-to-ammonia synthesis system. Then, based on the production and operation data, it determines the hydrogen production and consumption status of the electro-hydrogen-to-ammonia synthesis system. Next, according to the hydrogen production and consumption status, it controls the hydrogen storage system within the electro-hydrogen-to-ammonia synthesis system to perform coordinated hydrogen charging and discharging. The hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device. Compared with existing technologies, this application, by dynamically controlling the allocation and operation strategy of the hydrogen storage system based on the system's hydrogen production and consumption status while ensuring the system's safe and stable operation, can efficiently and promptly respond to changes in hydrogen consumption, fully utilize the cycle life of the hydrogen storage system, and dynamically and intelligently allocate hydrogen storage capacity, thereby improving the overall economic efficiency of the system.

[0010] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic flowchart of a control method for a hydrogen storage system provided in an embodiment of this application is shown; Figure 2 A flowchart illustrating another control method for a hydrogen storage system provided in an embodiment of this application is shown; Figure 3 A flowchart illustrating a control strategy provided in an embodiment of this application is shown; Figure 4 A schematic diagram of a hydrogen storage operation mode provided in an embodiment of this application is shown; Figure 5 A flowchart illustrating a balanced and stable power supply operation mode provided in an embodiment of this application is shown. Figure 6 A schematic diagram of a hydrogen release operation mode provided in an embodiment of this application is shown; Figure 7 A schematic diagram of the structure of a control device for a hydrogen storage system provided in an embodiment of this application is shown. Detailed Implementation

[0014] The embodiments of this application will now be described in more detail with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0015] To address the technical challenge of maximizing renewable energy absorption and overall system economics while ensuring stable operation of ammonia synthesis plants using existing technologies, this embodiment provides a control method for a hydrogen storage system, such as... Figure 1 As shown, the method includes: Step 101: Obtain production and operation data of the electro-hydrogen to ammonia synthesis system.

[0016] Optionally, the production operation data may include at least one of the following: wind and solar power forecast data, remaining capacity of hydrogen storage system, load data of hydrogen production system, and hydrogen flow demand data of ammonia synthesis system.

[0017] For example, wind and solar power forecasting data mainly rely on meteorological services for accurate forecasts of meteorological elements such as wind speed, wind direction, and irradiance. For instance, the power output of wind and solar power plants in the future can be calculated through power generation models.

[0018] For example, the remaining capacity of a hydrogen storage system is used to reflect the actual amount of hydrogen stored in a current gaseous, solid, or liquid hydrogen storage device.

[0019] For example, the load data of the hydrogen production system is used to determine the current actual operating power, hydrogen production rate and allowable variable load adjustment range of hydrogen production equipment such as electrolyzers, and thus determine the current hydrogen production of the system.

[0020] For example, the hydrogen flow requirement data for the ammonia synthesis system is the real-time amount of hydrogen that the ammonia synthesis unit must consume to maintain stable production.

[0021] In some examples, production operation data can be collected on a period of minutes / hours / days.

[0022] Step 102: Based on production operation data, determine the hydrogen production status of the electro-hydrogen to ammonia synthesis system.

[0023] For example, by collecting and comparing the total hydrogen production load of the water electrolysis hydrogen production system with the total hydrogen consumption of the ammonia synthesis system in real time, it can be determined whether the system is currently in a state of hydrogen production surplus (total hydrogen production load is greater than total hydrogen consumption), a state of hydrogen shortage (total hydrogen consumption is greater than total hydrogen production load), or a state of hydrogen production and consumption balance (total hydrogen production load equals total hydrogen consumption).

[0024] Step 103: Based on the hydrogen usage status in the hydrogen production process, control the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system to perform coordinated charging and discharging of hydrogen.

[0025] The hydrogen storage system includes gaseous hydrogen storage devices, solid hydrogen storage devices, and / or liquid hydrogen storage devices.

[0026] For example, when the amount of hydrogen produced by the water electrolysis hydrogen production system exceeds the current needs of the ammonia synthesis system, the hydrogen storage mode can be activated, allowing the excess high-purity hydrogen to be sequentially charged into gaseous, solid, or liquid hydrogen storage devices according to a preset priority order.

[0027] For example, when the amount of hydrogen produced by the water electrolysis hydrogen production system cannot meet the continuous production needs of the ammonia synthesis unit, it can switch to hydrogen supply mode. The hydrogen storage system will release hydrogen according to the response speed and remaining capacity of each unit, in order of priority, to accurately fill the supply and demand gap and ensure that the ammonia synthesis unit will not frequently shut down or reduce its load due to insufficient hydrogen at the front end.

[0028] For example, when the hydrogen production and consumption are basically equal and the system is operating in an ideal steady state, the hydrogen storage device will maintain stable pressure and operating conditions without performing any substantial charging or discharging operations. At the same time, the dynamic balance of the entire system can be ensured by fine-tuning the electrical load.

[0029] Compared with existing technologies, the technical solution of this embodiment first acquires the production and operation data of the electro-hydrogen-to-ammonia synthesis system; then, based on the production and operation data, it determines the hydrogen production and consumption status of the electro-hydrogen-to-ammonia synthesis system; and then, according to the hydrogen production and consumption status, it controls the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system to coordinate the charging and discharging of hydrogen, wherein the hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device. By dynamically controlling the allocation and operation strategy of the hydrogen storage system based on the hydrogen production and consumption status of the system while ensuring the safe and stable operation of the system, it is possible to respond efficiently and promptly to changes in hydrogen consumption, fully utilize the cycle life of the hydrogen storage system, and dynamically and intelligently allocate the hydrogen storage capacity, thereby improving the overall economic efficiency of the system operation.

[0030] To further illustrate the specific implementation process of the method in this embodiment, this embodiment provides a method such as... Figure 2 The method shown includes: Step 201: Obtain production and operation data of the electro-hydrogen to ammonia synthesis system.

[0031] Optionally, the production operation data may include at least one of the following: wind and solar power forecast data, remaining capacity of hydrogen storage system, load data of hydrogen production system, and hydrogen flow demand data of ammonia synthesis system.

[0032] For example, wind and solar power forecasting data mainly rely on meteorological services for accurate forecasts of meteorological elements such as wind speed, wind direction, and irradiance. For instance, the power output of wind and solar power plants in the future can be calculated through power generation models.

[0033] For example, the remaining capacity of the hydrogen storage system is used to reflect the actual amount of hydrogen stored in the current gaseous, solid, or liquid hydrogen storage device. It can be calculated by real-time acquisition of pressure, temperature, and cumulative hydrogen charging and discharging flow rates through pressure transmitters, temperature sensors, and flow meters installed on the hydrogen storage tank or device.

[0034] For example, the load data of the hydrogen production system is used to determine the current actual operating power, hydrogen production rate and allowable variable load adjustment range of hydrogen production equipment such as electrolyzers, and then to determine the current hydrogen production of the system. The operating parameters such as actual operating current, voltage, power and hydrogen production rate can be collected by the electrolyzer control system.

[0035] For example, the hydrogen flow rate requirement data of the ammonia synthesis system is the real-time amount of hydrogen that the ammonia synthesis unit must consume to maintain stable production. The hydrogen flow rate entering the ammonia synthesis reactor can be monitored in real time by using high-precision flow meters, pressure sensors, and regulating valve position signals installed on the hydrogen delivery pipeline, and the current required hydrogen flow rate can be dynamically obtained in combination with the process setpoints.

[0036] Step 202: Based on production operation data, determine the hydrogen production status of the electro-hydrogen to ammonia synthesis system.

[0037] Optionally, step 202 may specifically include: determining the total hydrogen production load and total hydrogen consumption flow of the electro-hydrogen-to-ammonia synthesis system based on production operation data; determining that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen overproduction when the total hydrogen production load is greater than the total hydrogen consumption flow; determining that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen production and consumption balance when the total hydrogen production load is equal to the total hydrogen consumption flow; and determining that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen shortage when the total hydrogen production load is less than the total hydrogen consumption flow.

[0038] For example, the upper limit of electricity input available for water electrolysis in the current and future periods can be predicted based on wind and solar power forecast data. Combined with the real-time operating power, current and voltage parameters and hydrogen production rate of the electrolyzers collected in the hydrogen production system load data, the actual total hydrogen production load under the current green electricity drive can be obtained by superimposing the actual output of all operating units or by extrapolating from the total power and electrolysis efficiency curve.

[0039] For example, the real-time flow rate entering the ammonia synthesis reactor can be directly obtained by a high-precision flow meter installed on the hydrogen delivery pipeline. At the same time, by combining the real-time operating conditions of the ammonia synthesis unit with the chemical reaction stoichiometry for reverse verification, the minimum hydrogen consumption required for downstream chemical processes to maintain safe and stable production can be accurately determined.

[0040] In some examples, such as Figure 3 In the control strategy shown, when the total hydrogen production load is greater than the total hydrogen consumption flow, it indicates that the current output of hydrogen produced from green electricity exceeds the chemical consumption, and the system is judged to be in a state of hydrogen overproduction; when the total hydrogen production load is equal to the total hydrogen consumption flow, it indicates that the supply and demand are perfectly matched, and the system is in a state of hydrogen production and consumption balance; and when the total hydrogen production load is less than the total hydrogen consumption flow, it indicates that the hydrogen production output cannot meet the continuous production needs of ammonia synthesis, and the system is judged to be in a state of hydrogen shortage.

[0041] Step 203: Based on the hydrogen production and consumption status, determine the control strategy for the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system.

[0042] For example, the operating conditions of various main mixed hydrogen storage systems can be determined based on factors such as the hydrogen production and consumption status, combined with equipment status.

[0043] For example, the operating conditions of a hybrid hydrogen storage system may include hydrogen storage operation, balanced and stable supply operation, and hydrogen release operation, with different control strategies corresponding to different operating conditions.

[0044] Optionally, step 203 may specifically include: determining the hydrogen storage control and allocation strategy for the hydrogen storage system when the electro-hydrogen-to-ammonia system is in a state of hydrogen overproduction; determining the balance control and allocation strategy for the hydrogen storage system when the electro-hydrogen-to-ammonia system is in a state of hydrogen production and consumption balance; and determining the hydrogen release control and allocation strategy for the hydrogen storage system when the electro-hydrogen-to-ammonia system is in a state of hydrogen shortage.

[0045] For example, such as Figure 3 As shown, the control and allocation strategy of the hydrogen storage system will be dynamically adjusted according to the specific hydrogen production and consumption status in order to meet the operational needs of the electro-hydrogen to ammonia synthesis system under different supply and demand conditions.

[0046] For example, when the system is in a state of hydrogen overproduction, it means that the output of green electricity hydrogen production exceeds the immediate consumption of synthetic ammonia. At this time, the corresponding hydrogen storage control and allocation strategy will be determined for the hydrogen storage system, and the excess hydrogen will be efficiently charged into gaseous, solid or liquid hydrogen storage devices for storage, so as to maximize the absorption of fluctuating renewable energy.

[0047] For example, when the system is in a state of hydrogen production and consumption balance, it means that the current hydrogen production is perfectly matched with the downstream chemical demand. At this time, the balance control and allocation strategy corresponding to the hydrogen storage system will be determined to maintain the static or fine-tuning state of the hydrogen storage system and ensure that the system maintains a stable supply without large-scale hydrogen charging and discharging.

[0048] For example, when the system is in a state of hydrogen shortage, it means that the insufficient output of wind and solar power has resulted in the hydrogen production being unable to meet the rigid demand of the ammonia synthesis unit. At this time, the hydrogen release control and allocation strategy corresponding to the hydrogen storage system will be determined, and the hydrogen storage unit will be precisely mobilized to release the stored hydrogen to fill the supply and demand gap, thereby ensuring the safe and continuous operation of the ammonia synthesis process.

[0049] Step 204: Based on the control strategy, control the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system to perform coordinated charging and releasing of hydrogen.

[0050] In some examples, the core objective of maximizing green electricity utilization is to precisely control the coordinated charging and discharging process of hydrogen in hydrogen storage devices within an electro-hydrogen to ammonia synthesis system. This is achieved through pre-planning and setting tiered commissioning and discharging strategies for gaseous, solid, and organic-liquid hydrogen storage, fully leveraging the advantages of different hydrogen storage media. When faced with hydrogen surplus or shortage due to fluctuations in wind and solar power generation, the control system will perform tiered coordinated allocation based on the real-time capacity, response speed, and cycle life of each hydrogen storage device. For example, it will utilize hydrogen storage methods with fast response speeds to cope with instantaneous power fluctuations, and utilize hydrogen storage methods with large capacity to absorb surplus green electricity over long periods.

[0051] For example, this dynamic intelligent allocation mechanism can not only flexibly adapt to complex supply and demand changes, but also effectively balance the load of each hydrogen storage unit, ensuring that the cycle life of the hydrogen storage system is fully utilized. Thus, while ensuring the continuous and stable production of the ammonia synthesis unit, it maximizes the system's ability to absorb renewable energy and its operational economy.

[0052] Optionally, step 204 may specifically include: controlling the hydrogen storage system to fill with hydrogen according to a preset hydrogen storage priority order based on the hydrogen storage control and allocation strategy.

[0053] For example, hydrogen can be preferentially charged into a gaseous hydrogen storage device with fast response speed and long cycle life to cope with short-term wind and solar power fluctuations. Once the set threshold is reached, it can be automatically switched to a solid or organic liquid hydrogen storage system with larger capacity and suitable for long-term energy storage for deep energy storage.

[0054] Optionally, the aforementioned hydrogen storage system may perform tiered hydrogen filling according to a preset hydrogen storage priority order, specifically including: filling the gaseous hydrogen storage device with hydrogen according to the hydrogen storage priority order; when the pressure parameter of the gaseous hydrogen storage device reaches a first pressure threshold, switching to the solid hydrogen storage device to continue filling with hydrogen; when the pressure parameter of the solid hydrogen storage device reaches a second pressure threshold, switching to the liquid hydrogen storage device to continue filling with hydrogen; and stopping hydrogen filling when the working fluid density parameter of the liquid hydrogen storage device reaches a first density threshold.

[0055] In some examples, such as Figure 4 In the hydrogen storage operation shown, hydrogen is first filled into the gaseous hydrogen storage device according to the priority order of hydrogen storage. The pressure parameters of the gaseous hydrogen storage tank are monitored in real time. As long as the first pressure threshold is not reached and there is still hydrogen storage capacity, the system will fill each storage tank one by one or in a balanced manner according to the gaseous hydrogen storage control strategy, and continuously monitor the parameters until the standard is met.

[0056] For example, when the pressure parameter of the gaseous hydrogen storage device reaches the first pressure threshold, the system automatically switches to the solid hydrogen storage device to continue filling with hydrogen. The pressure parameter is also detected. If the second pressure threshold is not reached and there is still hydrogen storage capacity, hydrogen is stored in each skid one by one or evenly according to the solid hydrogen storage control strategy until the second pressure threshold is reached.

[0057] For example, when the pressure parameter of the solid hydrogen storage device reaches the second pressure threshold, the system further switches to the liquid hydrogen storage device to continue filling hydrogen. At this time, the remaining capacity is determined by detecting whether the working fluid density of the organic liquid hydrogen storage device has decreased to the first density threshold, and hydrogen is stored in each unit individually or evenly according to the organic liquid hydrogen storage control strategy.

[0058] For example, when the working fluid density parameter of the liquid hydrogen storage device reaches the first density threshold, the system will send a feedback signal to indicate that the hydrogen storage device is full and automatically stop filling with hydrogen. At the same time, it will reduce the hydrogen production load of the electrolyzer to keep it in balance with the total hydrogen flow of the ammonia synthesis unit.

[0059] The first pressure threshold and the second pressure threshold are typically the rated maximum pressure of the corresponding hydrogen storage device.

[0060] Optionally, step 204 may further include: controlling the hydrogen storage system to maintain its current hydrogen storage state based on a balance control allocation strategy.

[0061] In some examples, such as Figure 5 In the balanced and stable supply operation shown, when the electro-hydrogen to ammonia synthesis system is in a state of hydrogen production and consumption balance, the hydrogen generated by the water electrolysis hydrogen production system will be directly delivered to the ammonia synthesis system after purification treatment. At this time, the ammonia synthesis unit will operate continuously in strict accordance with the stable load set by the control system.

[0062] For example, in order to maintain the dynamic balance between supply and demand of the entire system, the hydrogen storage system can implement a balance control distribution strategy: the gaseous hydrogen storage tank will maintain a stable internal pressure and will not carry out hydrogen filling or discharging operations; the solid hydrogen storage skid and the organic liquid hydrogen storage device will maintain stable operating conditions and operate in a hot standby state.

[0063] Optionally, the above-mentioned control hydrogen storage system maintains the current hydrogen storage state, which may specifically include: when a deviation in the hydrogen-nitrogen ratio is detected in the electro-hydrogen-to-ammonia synthesis system, dynamically adjusting the hydrogen production load and / or controlling the gaseous hydrogen storage device to charge and release hydrogen in order to maintain a stable hydrogen-nitrogen ratio.

[0064] In some examples, to ensure the efficiency and safety of the ammonia synthesis process, the system monitors the hydrogen / nitrogen (H2 / N2) gas mixture ratio and composition at the inlet of the synthesis tower in real time. When a deviation in the hydrogen-nitrogen ratio is detected in the electro-hydrogen ammonia synthesis system, the system immediately activates a dynamic adjustment mechanism to maintain a stable hydrogen-nitrogen ratio by adjusting the hydrogen production load and / or controlling the charging and discharging of the gaseous hydrogen storage device.

[0065] For example, if real-time monitoring finds that the ratio is within the normal range, the system will continue to maintain the current balanced and stable supply process; once the ratio deviates to a certain extent, the control system will respond quickly according to actual needs. It can dynamically adjust the real-time load of the water electrolysis hydrogen production system to change the hydrogen production rate, or flexibly use gaseous hydrogen storage tanks to quickly charge or release hydrogen.

[0066] Optionally, step 204 may further include: controlling the hydrogen storage system to release hydrogen according to a preset hydrogen release priority order based on the hydrogen release control and distribution strategy.

[0067] For example, the gaseous hydrogen storage device with the fastest response speed and the most flexible adjustment can be used for the first round of hydrogen release. The instantaneous fluctuations in hydrogen demand can be smoothed out by quickly adjusting the outlet pressure and flow rate. Once the set threshold is reached, the system can be automatically switched to a solid or organic liquid hydrogen storage system for continuous hydrogen release.

[0068] Optionally, the aforementioned hydrogen storage system releases hydrogen according to a preset hydrogen release priority sequence, which may specifically include: controlling the gaseous hydrogen storage device to release hydrogen according to the hydrogen release priority sequence; switching to the solid hydrogen storage device to release hydrogen when the pressure parameter of the gaseous hydrogen storage device drops to the third pressure threshold; switching to the liquid hydrogen storage device to release hydrogen when the pressure parameter of the solid hydrogen storage device drops to the fourth pressure threshold; and reducing the operating load of the electro-hydrogen ammonia synthesis system when the remaining capacity of the liquid hydrogen storage device is detected to be lower than the first capacity threshold.

[0069] In some examples, such as Figure 6 In the hydrogen release operation shown, hydrogen is first released from the gaseous hydrogen storage device according to the hydrogen release priority order, using the gaseous hydrogen storage tank for hydrogen release. When the gaseous hydrogen storage tank has not dropped to the third pressure threshold and still has hydrogen release capacity, the system will use each storage tank individually or evenly according to the gaseous hydrogen storage tank hydrogen release control strategy.

[0070] For example, when the expected hydrogen release time is lower than the first time threshold (e.g., 10 minutes), the solid-state hydrogen storage skid preheating system is activated in advance. Once the gaseous hydrogen storage tank is detected to have dropped to the third pressure threshold, the system immediately switches to the solid-state hydrogen storage device to release hydrogen. Subsequently, if the solid-state hydrogen storage skid is detected to have not reached the rated minimum pressure and still has hydrogen release capacity, the system will use each skid individually or evenly according to the solid-state hydrogen storage skid hydrogen release control strategy to release hydrogen, and activate the organic liquid hydrogen storage device preheating system when the expected hydrogen release time is lower than the second time threshold (e.g., 60 minutes).

[0071] For example, when the solid hydrogen storage skid is detected to reach the fourth pressure threshold, the system can be further switched to a liquid hydrogen storage device to release hydrogen.

[0072] In some examples, it can be predicted by analysis whether the organic liquid hydrogen storage capacity can support the ammonia synthesis system to transition to hydrogen storage or balanced stable supply conditions. If it is lower than the first capacity threshold, it cannot support the system. In this case, the ammonia synthesis load should be reduced until the remaining hydrogen storage capacity can support the system to transition to hydrogen storage or balanced stable supply conditions. If the remaining capacity can support the system operation, the organic liquid hydrogen storage device is used to continuously release hydrogen to maintain the ammonia synthesis unit at the set load.

[0073] The third and fourth pressure thresholds are typically the rated minimum pressures of the corresponding hydrogen storage devices.

[0074] Optionally, the method in this embodiment may further include: adjusting the control strategy of the hydrogen storage system when the operating status parameters of the hydrogen storage system exceed the preset safety control boundary.

[0075] For example, during the operation of a hydrogen storage system, the operating status and key parameters of gaseous, solid, and organic-liquid hydrogen storage systems can be continuously monitored in real time, and their operating conditions can be actively verified to ensure that they are always within the design limits.

[0076] For example, the system can also simultaneously verify the operating range and variable load rate limits of the water electrolysis hydrogen production system, the operating range and variable load rate limits of the ammonia synthesis system, and the remaining capacity range and hydrogen charging / discharging rate limits of the hydrogen storage system itself, among other multi-dimensional safety boundaries. Once the operating status parameters of the hydrogen storage system exceed the preset safety control boundaries or an anomaly occurs, the system will immediately trigger the safety interlock mechanism and rapidly adjust the control strategy of the hybrid hydrogen storage system to prevent equipment from operating under overpressure, overtemperature, or overload conditions, ensuring the safety and stability of the entire electrolytic hydrogen production and ammonia synthesis system under complex operating conditions.

[0077] In some examples, to continuously improve the system's operational efficiency and intelligence, the electro-hydrogen to ammonia synthesis system can periodically generate a mixed hydrogen storage system allocation strategy report, conducting in-depth review and analysis of allocation decision data at the minute, hour, and daily levels according to a preset cycle. By combining historical operating data with actual operating conditions, the existing allocation control parameters and strategies are dynamically optimized, and the setpoints and decision boundaries under various operating conditions are continuously iterated and updated to ensure that the control logic of the hydrogen storage system always maintains optimal matching with actual operating requirements.

[0078] Compared with existing technologies, this embodiment effectively solves the problem of load mismatch between renewable energy power generation and synthetic ammonia production by constructing a hybrid hydrogen storage system that integrates gaseous, solid, and organic-liquid states. This embodiment determines the balance between hydrogen production and consumption by collecting real-time data such as wind and solar power forecasts, hydrogen storage capacity, and system load, and executes hydrogen storage, balanced supply, or hydrogen release processes accordingly. Furthermore, through flexible strategy formulation and continuous model iteration on a minute, hour, or day basis, this embodiment not only achieves efficient circulation and intelligent capacity allocation of the hybrid hydrogen storage system, but also maximizes the local consumption rate of renewable energy while ensuring the stable operation of the synthetic ammonia unit, significantly improving the overall economic efficiency and energy utilization efficiency of the system.

[0079] Furthermore, as Figure 1 and Figure 2 The specific implementation of the method shown in this embodiment provides a control device for a hydrogen storage system, such as... Figure 7 As shown, the device includes: an acquisition module 31, a determination module 32, and a control module 33.

[0080] The acquisition module 31 is configured to acquire production and operation data of the electro-hydrogen to ammonia synthesis system; The determination module 32 is configured to determine the hydrogen production status of the electro-hydrogen-to-ammonia synthesis system based on the production operation data. The control module 33 is configured to control the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system to perform coordinated charging and releasing of hydrogen based on the hydrogen status of the hydrogen used in the hydrogen production. The hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device.

[0081] In some examples of this embodiment, the control module 33 is further configured to determine a control strategy for the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system based on the hydrogen state of the hydrogen used in the hydrogen production; and to control the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system to perform coordinated charging and discharging of hydrogen based on the control strategy.

[0082] In some examples of this embodiment, the control module 33 is further configured to: determine the hydrogen storage control allocation strategy corresponding to the hydrogen storage system when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen overproduction; determine the balance control allocation strategy corresponding to the hydrogen storage system when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen production and hydrogen consumption balance; and determine the hydrogen release control allocation strategy corresponding to the hydrogen storage system when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen shortage.

[0083] In some examples of this embodiment, the control module 33 is specifically configured to control the hydrogen storage system to fill with hydrogen according to a preset hydrogen storage priority order based on the hydrogen storage control and allocation strategy.

[0084] In some examples of this embodiment, the control module 33 is further configured to: charge hydrogen into the gaseous hydrogen storage device according to the hydrogen storage priority order; switch to the solid hydrogen storage device to continue charging hydrogen when the pressure parameter of the gaseous hydrogen storage device reaches a first pressure threshold; switch to the liquid hydrogen storage device to continue charging hydrogen when the pressure parameter of the solid hydrogen storage device reaches a second pressure threshold; and stop charging hydrogen when the working fluid density parameter of the liquid hydrogen storage device reaches a first density threshold.

[0085] In some examples of this embodiment, the control module 33 is specifically configured to control the hydrogen storage system to maintain its current hydrogen storage state based on the balance control allocation strategy.

[0086] In some examples of this embodiment, the control module 33 is specifically configured to dynamically adjust the hydrogen production load and / or control the gaseous hydrogen storage device to charge and release hydrogen when a deviation in the hydrogen-nitrogen ratio is detected in the electro-hydrogen ammonia synthesis system, so as to maintain the stability of the hydrogen-nitrogen ratio.

[0087] In some examples of this embodiment, the control module 33 is specifically configured to control the hydrogen storage system to release hydrogen according to a preset hydrogen release priority order based on the hydrogen release control and allocation strategy.

[0088] In some examples of this embodiment, the control module 33 is specifically configured to control the gaseous hydrogen storage device to release hydrogen according to the hydrogen release priority order; when the pressure parameter of the gaseous hydrogen storage device drops to a third pressure threshold, switch to the solid hydrogen storage device to release hydrogen; when the pressure parameter of the solid hydrogen storage device drops to a fourth pressure threshold, switch to the liquid hydrogen storage device to release hydrogen; and when the remaining capacity of the liquid hydrogen storage device is detected to be lower than a first capacity threshold, reduce the operating load of the electro-hydrogen ammonia synthesis system.

[0089] In some examples of this embodiment, the determining module 32 is further configured to determine, based on the production operation data, the total hydrogen production load and total hydrogen consumption flow of the electro-hydrogen-to-ammonia synthesis system; if the total hydrogen production load is greater than the total hydrogen consumption flow, determine that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen overproduction; if the total hydrogen production load is equal to the total hydrogen consumption flow, determine that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen production and consumption balance; and if the total hydrogen production load is less than the total hydrogen consumption flow, determine that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen shortage.

[0090] In some examples of this embodiment, the production operation data includes at least one of the following: wind and solar power forecast data, remaining capacity of hydrogen storage system, load data of hydrogen production system, and hydrogen flow demand data of synthetic ammonia system.

[0091] In some examples of this embodiment, the control module 33 is further configured to adjust the control strategy of the hydrogen storage system when the operating status parameters of the hydrogen storage system exceed the preset safety control boundary.

[0092] It should be noted that, for other corresponding descriptions of the functional units involved in the control device for the hydrogen storage system provided in this embodiment, please refer to... Figure 1 and Figure 2 The corresponding description in [the document] will not be repeated here.

[0093] Based on the above, Figure 1 and Figure 2 Accordingly, this embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described method. Figure 1 and Figure 2 The method shown.

[0094] Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause a computer device (such as personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of this application.

[0095] Based on the above, Figure 1 and Figure 2 The method shown, and Figure 7 To achieve the above objectives, the present application also provides an electronic device, such as a personal computer, server, laptop computer, intelligent robot, or other intelligent terminal, as illustrated in the virtual device embodiment. This device includes a storage medium and a processor; the storage medium stores a computer program; the processor executes the computer program to implement the above-described virtual device. Figure 1 and Figure 2 The method shown.

[0096] Optionally, the aforementioned physical devices may also include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, input units such as a keyboard, etc., and optional user interfaces may also include USB interfaces, card reader interfaces, etc. The network interface may optionally include standard wired interfaces, wireless interfaces (such as Wi-Fi interfaces), etc.

[0097] Those skilled in the art will understand that the physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[0098] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the aforementioned physical device, supporting the operation of information processing programs and other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing physical device.

[0099] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented using software plus necessary general-purpose hardware platforms, or it can be implemented through hardware. Compared with the prior art, by applying the scheme of this embodiment, this embodiment constructs a multi-element mixed hydrogen storage system of gaseous, solid, and organic-liquid states, and combines it with an intelligent allocation control strategy. It utilizes the fast response speed of gaseous hydrogen storage to smooth out the instantaneous fluctuations of wind and solar power generation, and leverages the high density advantage of solid and organic-liquid hydrogen storage to achieve large-scale, long-term storage, realizing the complementary advantages of different hydrogen storage media. Simultaneously, through a tiered charge-discharge strategy aimed at maximizing green electricity consumption, this embodiment can accurately match the load of water electrolysis for hydrogen production with the demand for ammonia synthesis, significantly improving the system's adaptability to renewable energy fluctuations, ensuring the stable operation of the ammonia synthesis equipment, and thus greatly improving the overall economic efficiency and energy utilization efficiency of the system.

[0100] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0101] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method for a hydrogen storage system, characterized in that, include: Obtain production and operation data from the electro-hydrogen to ammonia synthesis system; Based on the production operation data, the hydrogen production status of the electro-hydrogen-to-ammonia synthesis system is determined; Based on the hydrogen production and consumption status, a control strategy for the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system is determined; wherein, when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen production surplus, a hydrogen storage control allocation strategy corresponding to the hydrogen storage system is determined; when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen production and consumption balance, a balance control allocation strategy corresponding to the hydrogen storage system is determined; and when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen production shortage, a hydrogen release control allocation strategy corresponding to the hydrogen storage system is determined. Based on the aforementioned control strategy, the hydrogen storage system in the electro-hydrogen ammonia synthesis system is controlled to perform coordinated hydrogen charging and discharging; wherein, based on the hydrogen storage control and allocation strategy, the hydrogen storage system is controlled to charge hydrogen according to a preset hydrogen storage priority order; based on the balance control and allocation strategy, the hydrogen storage system is controlled to maintain its current hydrogen storage state; and based on the hydrogen release control and allocation strategy, the hydrogen storage system is controlled to release hydrogen according to a preset hydrogen release priority order. The hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device. The control of the hydrogen storage system to maintain its current hydrogen storage state includes: controlling the gaseous hydrogen storage device to not perform hydrogen charging or discharging operations; controlling the solid hydrogen storage device and the liquid hydrogen storage device to operate in a hot standby state; and maintaining the dynamic balance of the system by fine-tuning the hydrogen production load; when a deviation in the hydrogen-nitrogen ratio is detected in the electro-hydrogen ammonia synthesis system, dynamically adjusting the hydrogen production load and / or controlling the gaseous hydrogen storage device to charge or discharge hydrogen in order to maintain the stability of the hydrogen-nitrogen ratio.

2. The method according to claim 1, characterized in that, The control of the hydrogen storage system to perform tiered hydrogen filling according to a preset hydrogen storage priority sequence includes: Hydrogen is supplied to the gaseous hydrogen storage device according to the hydrogen storage priority order; When the pressure parameter of the gaseous hydrogen storage device reaches the first pressure threshold, the system switches to the solid hydrogen storage device to continue filling with hydrogen. When the pressure parameter of the solid hydrogen storage device reaches the second pressure threshold, the system switches to the liquid hydrogen storage device to continue filling with hydrogen. When the working fluid density parameter of the liquid hydrogen storage device reaches the first density threshold, hydrogen filling is stopped.

3. The method according to claim 1, characterized in that, The control of the hydrogen storage system to release hydrogen according to a preset hydrogen release priority sequence includes: The hydrogen release from the gaseous hydrogen storage device is controlled according to the hydrogen release priority order. When the pressure parameter of the gaseous hydrogen storage device drops to the third pressure threshold, the system switches to the solid hydrogen storage device to release hydrogen. When the pressure parameter of the solid hydrogen storage device drops to the fourth pressure threshold, the system switches to the liquid hydrogen storage device to release hydrogen. When the remaining capacity of the liquid hydrogen storage device is detected to be lower than the first capacity threshold, the operating load of the electro-hydrogen-to-ammonia synthesis system is reduced.

4. The method according to any one of claims 1 to 3, characterized in that, The determination of the hydrogen production status of the electro-hydrogen-to-ammonia synthesis system based on the production operation data includes: Based on the aforementioned production operation data, the total hydrogen production load and total hydrogen consumption flow of the electro-hydrogen ammonia synthesis system are determined. When the total hydrogen production load is greater than the total hydrogen consumption flow, it is determined that the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen overproduction. When the total hydrogen production load is equal to the total hydrogen consumption flow, the electro-hydrogen ammonia synthesis system is determined to be in a hydrogen production and consumption balance state. If the total hydrogen production load is less than the total hydrogen consumption flow, the electro-hydrogen ammonia synthesis system is determined to be in a state of hydrogen shortage.

5. The method according to claim 4, characterized in that, The production and operation data includes at least one of the following: wind and solar power forecast data, remaining capacity of hydrogen storage system, load data of hydrogen production system, and hydrogen flow demand data of ammonia synthesis system.

6. The method according to claim 5, characterized in that, The method further includes: If the operating status parameters of the hydrogen storage system are detected to exceed the preset safety control boundary, the control strategy of the hydrogen storage system will be adjusted.

7. A control device for a hydrogen storage system, characterized in that, include: The acquisition module is configured to acquire production and operation data of the electro-hydrogen-to-ammonia synthesis system; The determination module is configured to determine the hydrogen production status of the electro-hydrogen-to-ammonia synthesis system based on the production operation data. The control module is configured to determine a control strategy for the hydrogen storage system in the electro-hydrogen-to-ammonia synthesis system based on the hydrogen consumption status of the hydrogen production process; wherein, when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen surplus, a hydrogen storage control allocation strategy corresponding to the hydrogen storage system is determined; when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen consumption balance, a balance control allocation strategy corresponding to the hydrogen storage system is determined; and when the electro-hydrogen-to-ammonia synthesis system is in a state of hydrogen shortage, a hydrogen release control allocation strategy corresponding to the hydrogen storage system is determined. The control module is also configured to control the hydrogen storage system in the electro-hydrogen ammonia synthesis system to perform coordinated hydrogen charging and releasing based on the control strategy; wherein, based on the hydrogen storage control allocation strategy, the hydrogen storage system is controlled to charge hydrogen according to a preset hydrogen storage priority order; based on the balance control allocation strategy, the hydrogen storage system is controlled to maintain the current hydrogen storage state; and based on the hydrogen release control allocation strategy, the hydrogen storage system is controlled to release hydrogen according to a preset hydrogen release priority order. The hydrogen storage system includes a gaseous hydrogen storage device, a solid hydrogen storage device, and / or a liquid hydrogen storage device. The control module, while maintaining the current hydrogen storage state of the hydrogen storage system, is also configured to prevent the gaseous hydrogen storage device from charging or discharging hydrogen, control the solid hydrogen storage device and the liquid hydrogen storage device to operate in a hot standby state, and maintain the dynamic balance of the system by fine-tuning the hydrogen production load; when a deviation in the hydrogen-nitrogen ratio is detected in the electro-hydrogen ammonia synthesis system, the hydrogen production load is dynamically adjusted and / or the gaseous hydrogen storage device is charged or discharged to maintain the stability of the hydrogen-nitrogen ratio.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 6.

9. An electronic device, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 6.

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