High-pressure gaseous fixed hydrogen storage system and method suitable for unstable power supply

Abstract

The invention discloses a high-pressure gaseous fixed hydrogen storage system suitable for an unstable power supply, which comprises a hydrogen production device, a low-pressure hydrogen storage unit and a high-pressure hydrogen storage unit, the hydrogen production device, the low-pressure hydrogen storage unit and the high-pressure hydrogen storage unit are sequentially connected to form a first hydrogen storage passage, and the hydrogen production device and the high-pressure hydrogen storage unit are sequentially connected to form a second hydrogen storage passage. The system further comprises an unstable power supply prediction system and an unstable power supply prediction device, the unstable power supply prediction device is used for measuring the regional wind speed and wind direction and obtaining a plurality of first parameters, and the unstable power supply prediction system can process the first parameters to predict the hydrogen production amount of the hydrogen production unit. A second parameter can be calculated according to the predicted hydrogen production amount of the hydrogen production unit and hydrogen changes of the hydrogen production device, the low-pressure hydrogen storage unit and the high-pressure hydrogen storage unit in a certain period, if the second parameter is smaller than a first threshold value, the hydrogen storage flow of the high-pressure hydrogen storage unit is maintained or reduced, and otherwise, the hydrogen storage flow of the high-pressure hydrogen storage unit is opened or maintained.

Description

Technical Field

[0001] This invention belongs to the field of new energy, and in particular relates to a high-pressure gaseous stationary hydrogen storage system and method suitable for unstable power sources. Background Technology

[0002] Green hydrogen is the most important part of the hydrogen energy industry's development, and hydrogen production from unstable energy sources like wind and solar power will be the fastest-growing form of hydrogen production. High-pressure gaseous hydrogen is the hydrogen storage method with the lowest energy consumption. Compared to traditional steel tube bundles, high-pressure wound cylinders are smaller and lighter, offering significant space advantages.

[0003] Existing hydrogen storage systems determine whether to charge high-pressure hydrogen storage modules based on pressure. If hydrogen charging is initiated based on pressure and then encounters a decrease in wind speed or hydrogen production, the charging process may be quickly stopped. This can easily lead to interruptions in the charging process, resulting in excessively high charging frequency, which affects the lifespan of the high-pressure wound hydrogen storage tank and ultimately increases costs.

[0004] Therefore, there is an urgent need to design a high-pressure gaseous stationary hydrogen storage system and method suitable for unstable power sources to solve the problems mentioned above. Summary of the Invention

[0005] To address the technical problem mentioned in the background art, where excessively high hydrogen charging frequency can even affect the lifespan of high-pressure wound hydrogen storage tanks, a high-pressure gaseous fixed hydrogen storage system and method suitable for unstable power sources are provided.

[0006] To achieve the above objectives, the specific technical solution of the present invention for a high-pressure gaseous stationary hydrogen storage system and method suitable for unstable power sources is as follows: A high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources includes a hydrogen production unit, a low-pressure hydrogen storage unit, and a high-pressure hydrogen storage unit. The hydrogen production unit, the low-pressure hydrogen storage unit, and the high-pressure hydrogen storage unit are connected in sequence to form a first hydrogen storage path. The hydrogen production unit and the high-pressure hydrogen storage unit are connected in sequence to form a second hydrogen storage path. The hydrogen storage system also includes an unstable power source prediction system and an unstable power source prediction device. The unstable power source prediction device is used to measure regional wind speed and wind direction and obtain multiple first parameters. The unstable power source prediction system can process the first parameters to predict the hydrogen production capacity of the hydrogen production unit. The hydrogen storage system also includes a lifetime optimization system. The lifetime optimization system can calculate second parameters based on the predicted hydrogen production capacity of the hydrogen production unit and the hydrogen changes of the hydrogen production unit, the low-pressure hydrogen storage unit, and the high-pressure hydrogen storage unit over a certain period of time. If the second parameter is less than a first threshold, the hydrogen storage flow of the high-pressure hydrogen storage unit is maintained or reduced; otherwise, the hydrogen storage flow of the high-pressure hydrogen storage unit is turned on or maintained.

[0007] Furthermore, the hydrogen storage system also includes: The low-pressure compressor is located between the hydrogen production unit and the low-pressure hydrogen storage unit. The outlet pressure range of the low-pressure compressor is 0MPa-30MPa. The low-pressure compressor is used to introduce the compressed low-pressure hydrogen into the low-pressure hydrogen storage unit. The high-pressure compressor is located at the inlet of the high-pressure hydrogen storage unit and is connected to both the hydrogen production unit and the low-pressure hydrogen storage unit. The outlet pressure range of the high-pressure compressor is 30MPa-100MPa. The high-pressure compressor is used to introduce compressed high-pressure hydrogen into the high-pressure hydrogen storage unit.

[0008] Furthermore, it also includes a hydrogen consumption module, which is used to provide hydrogen to external hydrogen users. The hydrogen consumption module is connected to the low-pressure hydrogen storage unit to receive high-pressure hydrogen from the low-pressure hydrogen storage unit.

[0009] Furthermore, the hydrogen consumption module is also connected to at least one of the hydrogen production unit, the low-pressure compressor, the high-pressure compressor, and the high-pressure hydrogen storage unit.

[0010] Furthermore, the lifespan optimization system predicts the hydrogen consumption of the hydrogen consumption module based on the change in hydrogen consumption of the hydrogen consumption module during a certain period, predicts the hydrogen storage capacity of the low-pressure hydrogen storage unit based on the hydrogen storage capacity of the low-pressure hydrogen storage unit during a certain period, and calculates the second parameter using the predicted hydrogen production capacity of the hydrogen production unit, the hydrogen consumption of the hydrogen consumption module, and the hydrogen storage capacity of the low-pressure hydrogen storage unit. The second parameter = predicted hydrogen production capacity of the hydrogen production unit - predicted hydrogen consumption capacity of the hydrogen consumption module + predicted hydrogen storage capacity of the low-pressure hydrogen storage unit.

[0011] Furthermore, the high-pressure hydrogen storage unit includes a minimum single-use hydrogen storage capacity, the first threshold being the minimum single-use hydrogen storage capacity, and the hydrogen storage system also includes a judgment module, which is used to judge the magnitude of the second parameter and the minimum single-use hydrogen storage capacity, as well as the operating status of the high-pressure compressor. If the high-pressure compressor is not turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the high-pressure hydrogen storage unit will maintain a low hydrogen storage flow state and the high-pressure compressor will not start. If the high-pressure compressor is not turned on, and the second parameter is greater than the minimum hydrogen storage capacity for a single operation, then the high-pressure hydrogen storage unit will be activated to the high hydrogen storage flow state, and the high-pressure compressor will be turned on. If the high-pressure compressor is turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the hydrogen storage flow state of the high-pressure hydrogen storage unit is reduced, and the high-pressure compressor continues to operate. If the high-pressure compressor is turned on and the second parameter is greater than the minimum hydrogen storage capacity, the high hydrogen storage flow of the high-pressure hydrogen storage unit will be maintained and the high-pressure compressor will continue to work.

[0012] A high-pressure gaseous hydrogen storage method suitable for unstable power sources includes the following steps: S1. Activate the unstable power prediction device to measure the wind speed and direction in the area and obtain multiple first parameters. Use the unstable power prediction system to process the first parameters, and the hydrogen storage system predicts the hydrogen production capacity of the hydrogen production unit based on the first parameters. S2. The total hydrogen consumption is obtained through the hydrogen consumption module. The lifespan optimization system calculates the second parameter based on the predicted hydrogen production of the hydrogen production unit and the hydrogen changes of the hydrogen production device, low-pressure hydrogen storage unit and high-pressure hydrogen storage unit at a certain time period. S3. Determine the magnitude of the second parameter and the first threshold. If the second parameter is less than the first threshold, reduce the hydrogen storage flow of the high-pressure hydrogen storage unit; otherwise, maintain the hydrogen storage flow of the high-pressure hydrogen storage unit.

[0013] Further, step S1 includes: The wind speed in the area was measured using multiple anemometers at different locations, and the wind speed, wind direction, and coordinates of each anemometer were recorded to form the first parameter.

[0014] Further, step S2 includes: Predict the hydrogen consumption of the hydrogen consumption module based on the change in hydrogen consumption during a certain period. Predict the hydrogen storage capacity of a low-pressure hydrogen storage unit based on the hydrogen storage capacity of the low-pressure hydrogen storage unit during a certain period. The second parameter is calculated using the predicted hydrogen production capacity of the hydrogen production unit, the hydrogen consumption capacity of the hydrogen consumption module, and the hydrogen storage capacity of the low-pressure hydrogen storage unit. The second parameter = predicted hydrogen production capacity of the hydrogen production unit - predicted hydrogen consumption capacity of the hydrogen consumption module + predicted hydrogen storage capacity of the low-pressure hydrogen storage unit.

[0015] Further, step S3 includes: S31. Obtain the lowest single hydrogen storage capacity of the high-pressure hydrogen storage unit and use the lowest single hydrogen storage capacity as the first threshold. S32. Use the judgment module to determine the second parameter and the minimum single hydrogen storage capacity and the operating status of the high-pressure compressor; If the high-pressure compressor is not turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the high-pressure hydrogen storage unit will maintain a low hydrogen storage flow state and the high-pressure compressor will not start. If the high-pressure compressor is not turned on, and the second parameter is greater than the minimum hydrogen storage capacity for a single operation, then the high-pressure hydrogen storage unit will be activated to the high hydrogen storage flow state, and the high-pressure compressor will be turned on. If the high-pressure compressor is turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the hydrogen storage flow state of the high-pressure hydrogen storage unit is reduced, and the high-pressure compressor continues to operate. If the high-pressure compressor is turned on and the second parameter is greater than the minimum hydrogen storage capacity, the high hydrogen storage flow of the high-pressure hydrogen storage unit will be maintained and the high-pressure compressor will continue to work.

[0016] The high-pressure gaseous stationary hydrogen storage system of the present invention, applicable to unstable power sources, has the following advantages: By measuring and processing regional wind speed through an unstable power source prediction system and device, the system determines whether the wind speed is continuous, thereby controlling the magnitude of the hydrogen storage flow. This avoids interruptions in the hydrogen storage process caused by unstable hydrogen storage flow, ensuring that the high-pressure hydrogen storage module stores hydrogen only when needed, reducing the charging frequency, and improving system operational stability and service life. The low-pressure hydrogen storage unit can serve as a "buffer" for the high-pressure hydrogen storage unit, providing hydrogen to the compression module when needed. When high-pressure hydrogen storage is insufficient, the low-pressure hydrogen storage unit can serve as a backup, maintaining continuous system operation.

[0017] The high-pressure gaseous stationary hydrogen storage method of the present invention, applicable to unstable power sources, has the following advantages: by monitoring the total hydrogen production and consumption in real time, the hydrogen production behavior can be dynamically adjusted to achieve precise control of the hydrogen storage process; system losses caused by frequent hydrogen storage / discharge are reduced, and the service life of the equipment is extended. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hydrogen storage system of the present invention; Figure 2 This is a schematic diagram of the structure of a hydrogen storage system according to another embodiment of the present invention; Figure 3 This is a flowchart of the hydrogen storage method steps of the present invention; Figure 4 This is a flowchart of the hydrogen storage method of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0021] The following is a reference to the appendix. Figure 1 To be continued Figure 4 This invention describes a high-pressure gaseous stationary hydrogen storage system and method suitable for unstable power sources.

[0022] This embodiment provides a high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources. Figure 1 This is a schematic diagram of the hydrogen storage system in this embodiment, as shown below. Figure 1 As shown, a high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources includes a hydrogen production unit, a low-pressure hydrogen storage unit, and a high-pressure hydrogen storage unit. The hydrogen production unit, the low-pressure hydrogen storage unit, and the high-pressure hydrogen storage unit are connected in sequence to form a first hydrogen storage path. The hydrogen production unit and the high-pressure hydrogen storage unit are connected in sequence to form a second hydrogen storage path. The hydrogen storage system also includes an unstable power source prediction system and an unstable power source prediction device. The unstable power source prediction device is used to measure the regional wind speed and wind direction and obtain multiple first parameters. The unstable power source prediction system can process the first parameters to predict the hydrogen production capacity of the hydrogen production unit. The hydrogen storage system also includes a lifetime optimization system. The lifetime optimization system can calculate second parameters based on the predicted hydrogen production capacity of the hydrogen production unit and the hydrogen changes of the hydrogen production unit, the low-pressure hydrogen storage unit, and the high-pressure hydrogen storage unit over a certain period of time. If the second parameter is less than a first threshold, the hydrogen storage flow of the high-pressure hydrogen storage unit is maintained or reduced; otherwise, the hydrogen storage flow of the high-pressure hydrogen storage unit is turned on or maintained.

[0023] Understandably, by using an unstable power prediction system and device to measure and process regional wind speed, the system can determine whether the wind speed is continuous, thereby controlling the size of the hydrogen storage flow. This avoids interruptions in the hydrogen storage process caused by unstable hydrogen storage flow, ensuring that the high-pressure hydrogen storage module stores hydrogen only when needed, reducing the charging frequency, and improving the system's operational stability and service life. The low-pressure hydrogen storage unit can act as a "buffer" for the high-pressure hydrogen storage unit, supplying hydrogen to the compression module when the system needs it. When the high-pressure hydrogen storage is insufficient, the low-pressure hydrogen storage unit can serve as a backup to maintain continuous system operation.

[0024] Figure 2 This is a schematic diagram of the structure of a hydrogen storage system according to another embodiment; Furthermore, such as Figure 2 As shown, the hydrogen storage system also includes a low-pressure compressor and a high-pressure compressor. The low-pressure compressor is located between the hydrogen production unit and the low-pressure hydrogen storage unit. The outlet pressure range of the low-pressure compressor is 0MPa-30MPa. The low-pressure compressor is used to introduce the compressed low-pressure hydrogen into the low-pressure hydrogen storage unit. The high-pressure compressor is located at the inlet end of the high-pressure hydrogen storage unit and is connected to both the hydrogen production unit and the low-pressure hydrogen storage unit. The outlet pressure range of the high-pressure compressor is 30MPa-100MPa. The high-pressure compressor is used to introduce the compressed high-pressure hydrogen into the high-pressure hydrogen storage unit.

[0025] Understandably, the low-pressure compressor is used for initial compression of hydrogen, reducing energy consumption while meeting the needs of the low-pressure hydrogen storage unit; the high-pressure compressor is used for final compression, increasing hydrogen storage density and achieving energy efficiency while meeting the needs of the high-pressure hydrogen storage unit. Staged compression avoids the high load caused by single-stage compression, reduces equipment wear, extends compressor life, and makes the system more adaptable. In addition, the high-pressure compressor connects to multiple hydrogen sources (hydrogen production unit and low-pressure hydrogen storage unit), allowing for flexible allocation of hydrogen sources according to actual hydrogen storage needs.

[0026] Furthermore, it also includes a hydrogen consumption module, which is used to provide hydrogen to external hydrogen users. The hydrogen consumption module is connected to the low-pressure hydrogen storage unit to receive high-pressure hydrogen from the low-pressure hydrogen storage unit.

[0027] Understandably, the hydrogen consumption module serves as the system's external energy supply interface, giving the system practical application value; the stored hydrogen is used by external users, realizing energy conversion and economic benefits; by adjusting the hydrogen output, the storage and use of hydrogen can be balanced to prevent system overload; after use by external users, some hydrogen can be recovered to form a closed-loop system, improving overall energy efficiency.

[0028] Furthermore, the hydrogen consumption module is also connected to at least one of the hydrogen production unit, the low-pressure compressor, the high-pressure compressor, and the high-pressure hydrogen storage unit.

[0029] Understandably, the hydrogen consumption module can obtain hydrogen from multiple nodes, enhancing energy supply flexibility. When a hydrogen storage unit or compressor fails, energy can be supplied through other paths, improving system reliability. In addition, in practical work, the most suitable energy supply path can be selected according to real-time needs to reduce energy loss. The modular design facilitates system expansion and customization, making it suitable for hydrogen energy application scenarios of different scales and types.

[0030] Furthermore, the lifespan optimization system predicts the hydrogen consumption of the hydrogen consumption module based on the change in hydrogen consumption of the hydrogen consumption module during a certain period, predicts the hydrogen storage capacity of the low-pressure hydrogen storage unit based on the hydrogen storage capacity of the low-pressure hydrogen storage unit during a certain period, and calculates the second parameter using the predicted hydrogen production capacity of the hydrogen production unit, the hydrogen consumption of the hydrogen consumption module, and the hydrogen storage capacity of the low-pressure hydrogen storage unit. The second parameter = predicted hydrogen production capacity of the hydrogen production unit - predicted hydrogen consumption capacity of the hydrogen consumption module + predicted hydrogen storage capacity of the low-pressure hydrogen storage unit.

[0031] Understandably, by using multi-parameter fusion calculations, it is possible to more accurately determine whether high-pressure hydrogen storage needs to be activated, avoiding blind hydrogen storage. The calculation of the second parameter comprehensively considers the three factors of hydrogen production, hydrogen use, and hydrogen storage, improving the scientific nature and accuracy of system decision-making. That is, high-pressure hydrogen storage is only activated when necessary, reducing the frequency of use of high-pressure compressors and storage tanks, and extending equipment life. In addition, by calculating the second parameter in real time, the system can quickly respond to changes in the external environment and maintain efficient operation.

[0032] Furthermore, the high-pressure hydrogen storage unit includes a minimum single-use hydrogen storage capacity, the first threshold being the minimum single-use hydrogen storage capacity, and the hydrogen storage system also includes a judgment module, which is used to judge the magnitude of the second parameter and the minimum single-use hydrogen storage capacity, as well as the operating status of the high-pressure compressor. If the high-pressure compressor is not turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the high-pressure hydrogen storage unit will maintain a low hydrogen storage flow state and the high-pressure compressor will not start. If the high-pressure compressor is not turned on, and the second parameter is greater than the minimum hydrogen storage capacity for a single operation, then the high-pressure hydrogen storage unit will be activated to the high hydrogen storage flow state, and the high-pressure compressor will be turned on. If the high-pressure compressor is turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the hydrogen storage flow state of the high-pressure hydrogen storage unit is reduced, and the high-pressure compressor continues to operate. If the high-pressure compressor is turned on and the second parameter is greater than the minimum hydrogen storage capacity, the high hydrogen storage flow of the high-pressure hydrogen storage unit will be maintained and the high-pressure compressor will continue to work.

[0033] Understandably, the system dynamically adjusts the hydrogen storage flow based on the high-pressure compressor status and hydrogen storage demand to achieve refined management. This means that the high-pressure compressor only operates when needed, reducing energy consumption and improving the overall system efficiency. When the second parameter is less than the threshold, the hydrogen storage flow is stopped or reduced to avoid inefficient or even ineffective hydrogen storage. In addition, the system's multiple judgment logics can cope with different operating conditions, improving the system's stability and reliability in complex environments.

[0034] This embodiment also provides a high-pressure gaseous fixed hydrogen storage method suitable for unstable power sources. Figure 3 This is a flowchart of the hydrogen storage method steps in this embodiment. Figure 4 This is a flowchart of the hydrogen storage method in this embodiment, as follows: Figure 3 and Figure 4 As shown, the high-pressure gaseous stationary hydrogen storage method suitable for unstable power sources includes the following steps: S1. Activate the unstable power prediction device to measure the wind speed and direction in the area and obtain multiple first parameters. Use the unstable power prediction system to process the first parameters, and the hydrogen storage system predicts the hydrogen production capacity of the hydrogen production unit based on the first parameters. S2. The total hydrogen consumption is obtained through the hydrogen consumption module. The lifespan optimization system calculates the second parameter based on the predicted hydrogen production of the hydrogen production unit and the hydrogen changes of the hydrogen production device, low-pressure hydrogen storage unit and high-pressure hydrogen storage unit at a certain time period. S3. Determine the magnitude of the second parameter and the first threshold. If the second parameter is less than the first threshold, reduce the hydrogen storage flow of the high-pressure hydrogen storage unit; otherwise, maintain the hydrogen storage flow of the high-pressure hydrogen storage unit.

[0035] Understandably, by monitoring the total hydrogen production and consumption in real time and dynamically adjusting the hydrogen production behavior, precise control of the hydrogen storage process can be achieved; this reduces system losses caused by frequent hydrogen storage / discharge and extends equipment lifespan.

[0036] Further, step S1 includes: The wind speed in the area was measured using multiple anemometers at different locations, and the wind speed, wind direction, and coordinates of each anemometer were recorded to form the first parameter.

[0037] Understandably, through prediction and judgment mechanisms, it is applicable to unstable energy scenarios such as wind power, has good environmental adaptability, and facilitates the automation and intelligence of hydrogen storage processes. Among them, multi-point measurement can more comprehensively reflect the regional wind field characteristics, improve prediction accuracy, and avoid data deviation caused by single-point failure. In addition, the use of multi-coordinate data supports the modeling of wind fields in complex terrains, improving the system's adaptability in complex environments and the system's operating efficiency.

[0038] For step S1, wind speed and direction data can be obtained from 8 anemometers (4 located 3km away in the east, south, west, and north directions, and 4 located 8km away in the southeast, northeast, southwest, and northwest directions). In this embodiment, the wind speed and direction at the location of the wind turbine are predicted using the linear regression method of wind vector components.

[0039] Further, step S2 includes: Predict the hydrogen consumption of the hydrogen consumption module based on the change in hydrogen consumption during a certain period. Predict the hydrogen storage capacity of a low-pressure hydrogen storage unit based on the hydrogen storage capacity of the low-pressure hydrogen storage unit during a certain period. The second parameter is calculated using the predicted hydrogen production capacity of the hydrogen production unit, the hydrogen consumption capacity of the hydrogen consumption module, and the hydrogen storage capacity of the low-pressure hydrogen storage unit. The second parameter = predicted hydrogen production capacity of the hydrogen production unit - predicted hydrogen consumption capacity of the hydrogen consumption module + predicted hydrogen storage capacity of the low-pressure hydrogen storage unit.

[0040] Understandably, combining historical data and trend changes for prediction improves the accuracy of parameter calculations. Furthermore, the dynamic prediction mechanism enables the system to respond quickly to external changes, thereby improving operational efficiency. By accurately predicting hydrogen consumption and storage, hydrogen storage plans can be rationally arranged, avoiding resource waste and frequent start-ups and shutdowns caused by inaccurate predictions, thus reducing equipment wear and tear.

[0041] In some embodiments, a fitting model can be used in conjunction with previous data for prediction. The fitting model can be a diagnostic prediction model in the prior art. In this embodiment, it is a convolutional neural network. When used, the previously obtained data is used as a training set to input various parameters of the trainable convolutional neural network, thereby fitting more accurate parameters. After multiple trainings, the convolutional neural network can significantly improve the prediction accuracy. At the same time, the unstable power supply prediction system processes the first parameter, and the hydrogen storage system predicts the hydrogen production capacity of the hydrogen production unit based on the first parameter.

[0042] Specifically, staff can calculate the hydrogen storage capacity by performing pressure tests on the low-pressure and high-pressure hydrogen storage units separately. In a convolutional neural network, a weighted summation is used to obtain the total hydrogen production capacity, highlighting the importance of the high-pressure hydrogen storage unit. The weight of the high-pressure hydrogen storage capacity is greater than that of the low-pressure hydrogen storage capacity, thus making the total hydrogen production capacity calculation more consistent with the actual hydrogen storage situation and improving data accuracy.

[0043] Further, step S3 includes: S31. Obtain the lowest single hydrogen storage capacity of the high-pressure hydrogen storage unit and use the lowest single hydrogen storage capacity as the first threshold. S32. Use the judgment module to determine the second parameter and the minimum single hydrogen storage capacity and the operating status of the high-pressure compressor; If the high-pressure compressor is not turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the high-pressure hydrogen storage unit will maintain a low hydrogen storage flow state and the high-pressure compressor will not start. If the high-pressure compressor is not turned on, and the second parameter is greater than the minimum hydrogen storage capacity for a single operation, then the high-pressure hydrogen storage unit will be activated to the high hydrogen storage flow state, and the high-pressure compressor will be turned on. If the high-pressure compressor is turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the hydrogen storage flow state of the high-pressure hydrogen storage unit is reduced, and the high-pressure compressor continues to operate. If the high-pressure compressor is turned on and the second parameter is greater than the minimum hydrogen storage capacity, the high hydrogen storage flow of the high-pressure hydrogen storage unit will be maintained and the high-pressure compressor will continue to work.

[0044] Understandably, using the minimum single-time hydrogen storage capacity as a unified threshold improves the standardization of the judgment logic, while the multi-state judgment logic can cope with different operating conditions, improve the stability of system operation, and enable the system to activate high-pressure hydrogen storage only when the minimum hydrogen storage requirement is met, thereby reducing unnecessary energy consumption and the number of start-ups and shutdowns of high-pressure compressors and storage tanks, and extending the service life of equipment.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources, comprising a hydrogen production unit, a low-pressure hydrogen storage unit, and a high-pressure hydrogen storage unit, characterized in that, The hydrogen production unit, low-pressure hydrogen storage unit, and high-pressure hydrogen storage unit are connected in sequence to form a first hydrogen storage path. The hydrogen production unit and high-pressure hydrogen storage unit are connected in sequence to form a second hydrogen storage path. The hydrogen storage system also includes an unstable power prediction system and an unstable power prediction device. The unstable power prediction device is used to measure the regional wind speed and direction and obtain multiple first parameters. The unstable power prediction system can process the first parameters to predict the hydrogen production capacity of the hydrogen production unit. The hydrogen storage system also includes a lifetime optimization system. The lifetime optimization system can calculate the second parameters based on the predicted hydrogen production capacity of the hydrogen production unit and the hydrogen changes of the hydrogen production unit, low-pressure hydrogen storage unit, and high-pressure hydrogen storage unit over a certain period of time. If the second parameter is less than a first threshold, the hydrogen storage flow of the high-pressure hydrogen storage unit is maintained or reduced; otherwise, the hydrogen storage flow of the high-pressure hydrogen storage unit is turned on or maintained.

2. The high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources according to claim 1, characterized in that, Hydrogen storage systems also include: The low-pressure compressor is located between the hydrogen production unit and the low-pressure hydrogen storage unit. The outlet pressure range of the low-pressure compressor is 0MPa-30MPa. The low-pressure compressor is used to introduce the compressed low-pressure hydrogen into the low-pressure hydrogen storage unit. The high-pressure compressor is located at the inlet of the high-pressure hydrogen storage unit and is connected to both the hydrogen production unit and the low-pressure hydrogen storage unit. The outlet pressure range of the high-pressure compressor is 30MPa-100MPa. The high-pressure compressor is used to introduce compressed high-pressure hydrogen into the high-pressure hydrogen storage unit.

3. The high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources according to claim 2, characterized in that, It also includes a hydrogen consumption module, which is used to provide hydrogen to external hydrogen users. The hydrogen consumption module is connected to the low-pressure hydrogen storage unit to receive high-pressure hydrogen from the low-pressure hydrogen storage unit.

4. The high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources according to claim 3, characterized in that, The hydrogen consumption module is also connected to at least one of the hydrogen production unit, low-pressure compressor, high-pressure compressor, and high-pressure hydrogen storage unit.

5. The high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources according to claim 3, characterized in that, The lifespan optimization system predicts the hydrogen consumption of the hydrogen consumption module based on the change in hydrogen consumption of the hydrogen consumption module during a certain period, predicts the hydrogen storage capacity of the low-pressure hydrogen storage unit based on the hydrogen storage capacity of the low-pressure hydrogen storage unit during a certain period, and calculates the second parameter using the predicted hydrogen production capacity of the hydrogen production unit, the hydrogen consumption of the hydrogen consumption module, and the hydrogen storage capacity of the low-pressure hydrogen storage unit. The second parameter = predicted hydrogen production capacity of the hydrogen production unit - predicted hydrogen consumption capacity of the hydrogen consumption module + predicted hydrogen storage capacity of the low-pressure hydrogen storage unit.

6. The high-pressure gaseous stationary hydrogen storage system suitable for unstable power sources according to any one of claims 1-5, characterized in that, The high-pressure hydrogen storage unit includes a minimum single-use hydrogen storage capacity, with a first threshold being the minimum single-use hydrogen storage capacity. The hydrogen storage system also includes a judgment module, which is used to judge the magnitude of the second parameter and the minimum single-use hydrogen storage capacity, as well as the operating status of the high-pressure compressor. If the high-pressure compressor is not turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the high-pressure hydrogen storage unit will maintain a low hydrogen storage flow state and the high-pressure compressor will not start. If the high-pressure compressor is not turned on, and the second parameter is greater than the minimum hydrogen storage capacity for a single operation, then the high-pressure hydrogen storage unit will be activated to the high hydrogen storage flow state, and the high-pressure compressor will be turned on. If the high-pressure compressor is turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the hydrogen storage flow state of the high-pressure hydrogen storage unit is reduced, and the high-pressure compressor continues to operate. If the high-pressure compressor is turned on and the second parameter is greater than the minimum hydrogen storage capacity, the high hydrogen storage flow of the high-pressure hydrogen storage unit will be maintained and the high-pressure compressor will continue to work.

7. A high-pressure gaseous fixed hydrogen storage method suitable for unstable power sources, characterized in that, Includes the following steps: S1. Activate the unstable power prediction device to measure the wind speed and direction in the area and obtain multiple first parameters. Use the unstable power prediction system to process the first parameters, and the hydrogen storage system predicts the hydrogen production capacity of the hydrogen production unit based on the first parameters. S2. The total hydrogen consumption is obtained through the hydrogen consumption module. The lifespan optimization system calculates the second parameter based on the predicted hydrogen production of the hydrogen production unit and the hydrogen changes of the hydrogen production device, low-pressure hydrogen storage unit and high-pressure hydrogen storage unit at a certain time period. S3. Determine the magnitude of the second parameter and the first threshold. If the second parameter is less than the first threshold, reduce the hydrogen storage flow of the high-pressure hydrogen storage unit; otherwise, maintain the hydrogen storage flow of the high-pressure hydrogen storage unit.

8. The high-pressure gaseous fixed hydrogen storage method for unstable power sources according to claim 7, characterized in that, Step S1 includes: The wind speed in the area was measured using multiple anemometers at different locations, and the wind speed, wind direction, and coordinates of each anemometer were recorded to form the first parameter.

9. The high-pressure gaseous fixed hydrogen storage method for unstable power sources according to claim 7, characterized in that, Step S2 includes: Predict the hydrogen consumption of the hydrogen consumption module based on the change in hydrogen consumption during a certain period. Predict the hydrogen storage capacity of a low-pressure hydrogen storage unit based on the hydrogen storage capacity of the low-pressure hydrogen storage unit during a certain period. The second parameter is calculated using the predicted hydrogen production capacity of the hydrogen production unit, the hydrogen consumption capacity of the hydrogen consumption module, and the hydrogen storage capacity of the low-pressure hydrogen storage unit. The second parameter = predicted hydrogen production capacity of the hydrogen production unit - predicted hydrogen consumption capacity of the hydrogen consumption module + predicted hydrogen storage capacity of the low-pressure hydrogen storage unit.

10. The high-pressure gaseous stationary hydrogen storage method suitable for unstable power sources according to any one of claims 7 or 8, characterized in that, Step S3 includes: S31. Obtain the lowest single hydrogen storage capacity of the high-pressure hydrogen storage unit and use the lowest single hydrogen storage capacity as the first threshold. S32. Use the judgment module to determine the second parameter and the minimum single hydrogen storage capacity and the operating status of the high-pressure compressor; If the high-pressure compressor is not turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the high-pressure hydrogen storage unit will maintain a low hydrogen storage flow state and the high-pressure compressor will not start. If the high-pressure compressor is not turned on, and the second parameter is greater than the minimum hydrogen storage capacity for a single operation, then the high-pressure hydrogen storage unit will be activated to the high hydrogen storage flow state, and the high-pressure compressor will be turned on. If the high-pressure compressor is turned on and the second parameter is less than the minimum hydrogen storage capacity for a single operation, the hydrogen storage flow state of the high-pressure hydrogen storage unit is reduced, and the high-pressure compressor continues to operate. If the high-pressure compressor is turned on and the second parameter is greater than the minimum hydrogen storage capacity, the high hydrogen storage flow of the high-pressure hydrogen storage unit will be maintained and the high-pressure compressor will continue to work.

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