Hydrogen storage and supply system control method and hydrogen storage and supply system control system

Abstract

The invention provides a hydrogen storage and supply system control method and a hydrogen storage and supply system control system.The method comprises the steps that the current working condition of a hydrogen storage and supply system and the current operation information of the hydrogen storage and supply system are determined in real time; determining and entering a target working condition of the hydrogen storage and supply system according to the current working condition and the current operation information; determining target control information of the hydrogen storage and supply system according to the target working condition of the hydrogen storage and supply system; and controlling operation of the hydrogen storage and supply system based on the target control information so as to adjust hydrogen input of a synthesis gas compressor in the hydrogen storage and supply system. The flow of the output hydrogen is accurately adjusted, upstream fluctuation can be effectively stabilized, it is guaranteed that the pressure of the hydrogen conveyed to the synthesis gas compressor is relatively constant, and safety and high efficiency of the whole synthesis ammonia process are guaranteed. Moreover, working condition judgment and control instruction issuing can be completed in an extremely short time, power fluctuation on a fine time scale can be effectively handled, and the operation safety and the reliability of a decision result are further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric hydrogen production control, in particular to a hydrogen storage and supply system control method and a hydrogen storage and supply system control system. BACKGROUND

[0002] To achieve sustainable development, the technical path of using renewable energy such as wind energy and solar energy to generate electricity, producing "green hydrogen" by electrolysis of water, and then synthesizing "green ammonia" with nitrogen, has become the focus of current research and industrial application. However, the output of renewable energy has significant volatility and uncertainty, which leads to frequent changes in hydrogen production rate, while the downstream ammonia synthesis section usually operates under high temperature and high pressure conditions, with large system inertia and slow regulation response, making it difficult to match the dynamic fluctuations of upstream hydrogen supply in real time, resulting in low hydrogen energy utilization efficiency, unstable equipment operation and even safety risks. Therefore, how to achieve efficient and safe matching between hydrogen production and consumption under the background of renewable energy fluctuations has become a key technical bottleneck restricting the large-scale development of green hydrogen-green ammonia integrated systems.

[0003] In the prior art, an integrated model including hydrogen generation, storage and ammonia synthesis can be constructed, and the hydrogen flow into the reactor and the storage tank can be adjusted to achieve reaction temperature control and storage tank pressure maintenance.

[0004] However, this control strategy in the prior art lacks fine modeling and control of the inlet pressure stability, start-stop logic and flow regulation capability, which may cause the equipment to operate outside the safe range and also makes it difficult to meet the requirements of real-time flexible ammonia synthesis for hydrogen supply stability, resulting in low efficiency and poor safety. SUMMARY

[0005] The present application aims to solve the problems of low efficiency and poor safety in the prior art by providing a hydrogen storage and supply system control method and a hydrogen storage and supply system control system.

[0006] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows: In a first aspect, an embodiment of the present application provides a hydrogen storage and supply system control method, which comprises: determining the current operating condition of the hydrogen storage and supply system and the current operating information of the hydrogen storage and supply system in real time, wherein the current operating information at least includes the current pressure of the first hydrogen storage tank; determining and entering the target operating condition of the hydrogen storage and supply system according to the current operating condition and the current operating information; determining target control information of the hydrogen storage and supply system according to a target working condition of the hydrogen storage and supply system, the target control information being used to control running states of a hydrogen compressor, a first hydrogen storage tank and a second hydrogen storage tank in the hydrogen storage and supply system; controlling the hydrogen storage and supply system to adjust hydrogen input of the syngas compressor in the hydrogen storage and supply system based on the target control information.

[0007] Optionally, the determining the target control information of the hydrogen storage and supply system according to the target working condition of the hydrogen storage and supply system comprises: if the target working condition is not the fourth working condition, determining the target control information of the hydrogen storage and supply system according to the target working condition and a current pressure of the second hydrogen storage tank in the hydrogen storage and supply system; if the target working condition is the fourth working condition, determining the target control information of the hydrogen storage and supply system according to the target working condition and a preset hot standby rule.

[0008] Optionally, the determining the target control information of the hydrogen storage and supply system according to the target working condition and the current pressure of the second hydrogen storage tank in the hydrogen storage and supply system comprises: determining a target state of the hydrogen compressor according to the target working condition of the hydrogen storage and supply system; determining a target outlet flow of the second hydrogen storage tank according to the current pressure of the second hydrogen storage tank; taking the target state of the hydrogen compressor and the target outlet flow of the second hydrogen storage tank as first control information of the hydrogen storage and supply system; if the target working condition is the first working condition, taking the first control information as the target control information; if the target working condition is not the first working condition, determining second control information according to the target working condition, and taking the first control information and the second control information as the target control information.

[0009] Optionally, the determining the target outlet flow of the second hydrogen storage tank according to the current pressure of the second hydrogen storage tank comprises: calculating a difference between the current pressure of the second hydrogen storage tank and an inlet pressure rated threshold of the syngas compressor; inputting the difference into a preset incremental calculation formula to obtain a difference increment of the second hydrogen storage tank; correcting the difference increment of the second hydrogen storage tank according to a preset first maximum adjustment rate of synthetic ammonia to obtain the target outlet flow.

[0010] Optionally, the determining the second control information according to the target working condition comprises: If the target working condition is the second working condition, a target outlet flow of the first hydrogen storage tank is determined according to historical pressure information of the first hydrogen storage tank and a preset first synthetic ammonia maximum adjustment rate, and the target outlet flow of the first hydrogen storage tank is taken as the second control information.

[0011] Optionally, the determining the second control information according to the target working condition comprises: If the target working condition is the third working condition, a target inlet flow of the first hydrogen storage tank is determined according to a current outlet flow of the second hydrogen storage tank, and the target inlet flow of the first hydrogen storage tank is taken as the second control information.

[0012] Optionally, the determining the target control information of the hydrogen storage and supply system according to the target working condition and a preset hot standby rule comprises: If the target working condition is the fourth working condition, a target state of the hydrogen compressor is determined as a closed state, a target outlet flow of the first hydrogen storage tank and a target outlet flow of the second hydrogen storage tank are determined as first preset values, and the target state of the hydrogen compressor, the target inlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are all taken as the target control information.

[0013] Optionally, the determining the second control information according to the target working condition comprises: If the target working condition is the fifth working condition, a target state of the hydrogen compressor is determined as an open state, a target outlet flow of the first hydrogen storage tank is determined according to historical outlet flow of the first hydrogen storage tank and a preset second synthetic ammonia maximum adjustment rate, and the target state of the hydrogen compressor and the target outlet flow of the first hydrogen storage tank are taken as the second control information.

[0014] Optionally, the determining and entering the target working condition of the hydrogen storage and supply system according to the current working condition and the current running information comprises: If the current working condition is the first working condition and a current pressure of the first hydrogen storage tank is less than a pressure threshold value at which the hydrogen compressor is opened, the target working condition is determined as the second working condition, and the second working condition is entered; If the current working condition is the first working condition and the current pressure of the first hydrogen storage tank is greater than an inlet pressure upper threshold value of the synthetic gas compressor, the target working condition is determined as the third working condition, and the third working condition is entered; If the current working condition is the second working condition and the current pressure of the first hydrogen storage tank is greater than a pressure threshold value at which the hydrogen compressor is closed, the target working condition is determined as the first working condition, and the first working condition is entered; If the current working condition is the second working condition, and the current pressure of the first hydrogen storage tank is less than the hot standby working condition triggering threshold, it is determined that the target working condition is the fourth working condition, and the fourth working condition is entered; If the current working condition is the third working condition, and the current pressure of the first hydrogen storage tank is equal to the current pressure of the second hydrogen storage tank, and the current pressure of the first hydrogen storage tank is less than or equal to the upper limit threshold of the inlet pressure of the syngas compressor, it is determined that the target working condition is the first working condition, and the first working condition is entered; If the current working condition is the fourth working condition, and the current pressure of the first hydrogen storage tank is greater than or equal to the hot standby working condition recovery threshold, it is determined that the target working condition is the fifth working condition, and the fifth working condition is entered; If the current working condition is the fifth working condition, and the outlet flow of the second hydrogen storage tank is greater than or equal to the minimum flow threshold allowed by the ammonia synthesis section to be started, it is determined that the target working condition is the second working condition, and the second working condition is entered.

[0015] In a second aspect, another embodiment of the present application provides a hydrogen storage and supply system control system, which comprises a control device and a hydrogen storage and supply system, wherein the hydrogen storage and supply system at least comprises a first hydrogen storage tank, a second hydrogen storage tank, a hydrogen compressor and a syngas compressor, the input end of the first hydrogen storage tank is connected with the output end of an electric hydrogen production section, the output end of the first hydrogen storage tank is connected with the input end of the hydrogen compressor and the input end of the second hydrogen storage tank respectively, the output end of the hydrogen compressor is connected with the input end of the second hydrogen storage tank, and the output end of the second hydrogen storage tank is connected with the input end of the syngas compressor; The control device is in communication connection with the first hydrogen storage tank, the second hydrogen storage tank and the hydrogen compressor in the hydrogen storage and supply system respectively; The control device is used for executing the steps of the method in the first aspect.

[0016] In a third aspect, another embodiment of the present application provides a hydrogen storage and supply system control device, which comprises: A running determination module is used for determining the current working condition of the hydrogen storage and supply system and the current running information of the hydrogen storage and supply system in real time, and the current running information at least comprises the current pressure of the first hydrogen storage tank; A working condition determination module is used for determining and entering the target working condition of the hydrogen storage and supply system according to the current working condition and the current running information; A control determination module is used for determining the target control information of the hydrogen storage and supply system according to the target working condition of the hydrogen storage and supply system, and the target control information is used for controlling the running state of the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank in the hydrogen storage and supply system; a control module configured to control operation of the hydrogen storage and supply system based on the target control information to adjust hydrogen input of a syngas compressor in the hydrogen storage and supply system.

[0017] Optionally, the control determination module is specifically configured to: if the target working condition is not the fourth working condition, determine target control information of the hydrogen storage and supply system according to the target working condition and a current pressure of a second hydrogen tank in the hydrogen storage and supply system; if the target working condition is the fourth working condition, determine target control information of the hydrogen storage and supply system according to the target working condition and a preset hot standby rule.

[0018] Optionally, the control determination module is specifically configured to: determine a target state of the hydrogen compressor according to the target working condition of the hydrogen storage and supply system; determine a target outlet flow of the second hydrogen tank according to the current pressure of the second hydrogen tank; use the target state of the hydrogen compressor and the target outlet flow of the second hydrogen tank as first control information of the hydrogen storage and supply system; if the target working condition is the first working condition, use the first control information as the target control information; if the target working condition is not the first working condition, determine second control information according to the target working condition, and use the first control information and the second control information as the target control information.

[0019] Optionally, the control determination module is specifically configured to: calculate a difference between the current pressure of the second hydrogen tank and an inlet pressure threshold of the syngas compressor; input the difference into a preset incremental calculation formula to obtain a difference increment of the second hydrogen tank; correct the difference increment of the second hydrogen tank according to a preset first synthetic ammonia maximum adjustment rate to obtain the target outlet flow.

[0020] Optionally, the control determination module is specifically configured to: if the target working condition is the second working condition, determine a target outlet flow of the first hydrogen tank according to historical pressure information of the first hydrogen tank and a preset first synthetic ammonia maximum adjustment rate, and use the target outlet flow of the first hydrogen tank as the second control information.

[0021] Optionally, the control determination module is specifically configured to: If the target working condition is the third working condition, the target inlet flow of the first hydrogen storage tank is determined according to the current outlet flow of the second hydrogen storage tank, and the target inlet flow of the first hydrogen storage tank is taken as the second control information.

[0022] Optionally, the control determination module is specifically configured to: If the target working condition is the fourth working condition, the target state of the hydrogen compressor is determined as the closed state, the target outlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are determined as the first preset value, and the target state of the hydrogen compressor, the target inlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are all taken as the target control information.

[0023] Optionally, the control determination module is specifically configured to: If the target working condition is the fifth working condition, the target state of the hydrogen compressor is determined as the open state, the target outlet flow of the first hydrogen storage tank is determined according to the historical outlet flow of the first hydrogen storage tank and the preset second maximum synthetic ammonia adjustment rate, and the target state of the hydrogen compressor and the target outlet flow of the first hydrogen storage tank are taken as the second control information.

[0024] Optionally, the working condition determination module is specifically configured to: If the current working condition is the first working condition, and the current pressure of the first hydrogen storage tank is less than the pressure threshold value at which the hydrogen compressor is opened, the target working condition is determined as the second working condition, and the second working condition is entered. If the current working condition is the first working condition, and the current pressure of the first hydrogen storage tank is greater than the upper limit threshold value of the inlet pressure of the synthetic gas compressor, the target working condition is determined as the third working condition, and the third working condition is entered. If the current working condition is the second working condition, and the current pressure of the first hydrogen storage tank is greater than the pressure threshold value at which the hydrogen compressor is closed, the target working condition is determined as the first working condition, and the first working condition is entered. If the current working condition is the second working condition, and the current pressure of the first hydrogen storage tank is less than the hot standby working condition triggering threshold value, the target working condition is determined as the fourth working condition, and the fourth working condition is entered. If the current working condition is the third working condition, and the current pressure of the first hydrogen storage tank is equal to the current pressure of the second hydrogen storage tank, and the current pressure of the first hydrogen storage tank is less than or equal to the upper limit threshold value of the inlet pressure of the synthetic gas compressor, the target working condition is determined as the first working condition, and the first working condition is entered. If the current operating condition is the fourth operating condition, and the current pressure of the first hydrogen storage tank is greater than or equal to the hot standby operating condition recovery threshold, then the target operating condition is determined to be the fifth operating condition, and the fifth operating condition is entered. If the current operating condition is the fifth operating condition, and the outlet flow rate of the second hydrogen storage tank is greater than or equal to the minimum flow rate threshold allowed for the ammonia synthesis section to be opened, the target operating condition is determined to be the second operating condition, and the second operating condition is entered.

[0025] Fourthly, another embodiment of this application provides a control device, including: a processor, a storage medium, and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, and when the control device is running, the processor communicates with the storage medium via the bus, and the processor executes the machine-readable instructions to perform the steps of any of the methods described in the first aspect above.

[0026] Fifthly, another embodiment of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, performs the steps of any of the methods described in the first aspect above.

[0027] The beneficial effects of this application are as follows: By determining the current operating condition and operational information of the hydrogen storage and supply system in real time; based on the current operating condition and operational information, determining and entering the target operating condition of the hydrogen storage and supply system; based on the target operating condition of the hydrogen storage and supply system, determining the target control information of the hydrogen storage and supply system, which is used to control the operating status of the hydrogen compressor, the first hydrogen storage tank, and the second hydrogen storage tank in the hydrogen storage and supply system; and based on the target control information, controlling the operation of the hydrogen storage and supply system to adjust the hydrogen input of the syngas compressor in the hydrogen storage and supply system, thereby achieving precise regulation of the output hydrogen flow rate, effectively smoothing upstream fluctuations, ensuring that the hydrogen pressure delivered to the syngas compressor is relatively constant, and guaranteeing the safety and efficiency of the entire ammonia synthesis process. Furthermore, it can complete the operation condition judgment and control command issuance in a very short time, effectively responding to power fluctuations on a fine time scale, further improving operational safety and the reliability of decision-making results. In addition, by determining the target operating condition of the hydrogen storage and supply system through the current operating condition and operational information, and controlling the operation of the hydrogen storage and supply system based on the target operating condition, it is also possible to better absorb intermittent renewable energy and improve energy utilization efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A system schematic diagram of a renewable energy hydrogen synthesis ammonia system provided by an embodiment of the present application; Figure 2 A flowchart of a control method of a hydrogen storage and supply system provided by an embodiment of the present application; Figure 3 A flowchart of determining target control information of a hydrogen storage and supply system in a control method of a hydrogen storage and supply system provided by an embodiment of the present application; Figure 4 Another flowchart of determining target control information of a hydrogen storage and supply system in a control method of a hydrogen storage and supply system provided by an embodiment of the present application; Figure 5 A flowchart of determining a target outlet flow of a second hydrogen storage tank in a control method of a hydrogen storage and supply system provided by an embodiment of the present application; Figure 6 A schematic diagram of a control device of a hydrogen storage and supply system provided by an embodiment of the present application; Figure 7 A schematic diagram of a control device of a hydrogen storage and supply system provided by an embodiment of the present application; DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application are only intended to illustrate and describe the present application, and are not intended to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn according to the actual proportions. The flowchart shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowchart or removed from the flowchart under the guidance of the content of the present application by those skilled in the art.

[0031] In addition, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0032] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the presence of the features that follow, but not to exclude the presence of other features.

[0033] In the prior art, the reaction temperature control and the storage tank pressure maintenance can be achieved by constructing an integrated model including hydrogen generation, storage and ammonia synthesis, and adjusting the hydrogen flow into the reactor and the storage tank.

[0034] However, the control strategy in the prior art does not fully consider the operating characteristics and constraints of key dynamic equipment such as hydrogen compressor and synthesis gas compressor, lacks fine modeling and control of the inlet pressure stability, start-stop logic and flow regulation capability of the key dynamic equipment, which may cause the equipment to operate out of the safety interval, and it is difficult to meet the requirements of real-time flexible ammonia synthesis for hydrogen supply stability, and there are problems of low efficiency and poor safety.

[0035] Based on the above problems, the embodiments of the present application provide a hydrogen storage and supply system control method, which determines the current operating condition of the hydrogen storage and supply system and the current operating information of the hydrogen storage and supply system in real time; determines and enters the target operating condition of the hydrogen storage and supply system according to the current operating condition and the current operating information; determines the target control information of the hydrogen storage and supply system according to the target operating condition of the hydrogen storage and supply system, and the target control information is used to control the operating state of the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank in the hydrogen storage and supply system; based on the target control information, the operation of the hydrogen storage and supply system is controlled to adjust the hydrogen input of the synthesis gas compressor in the hydrogen storage and supply system, which can fully consider the operating characteristics and constraints of key dynamic equipment such as hydrogen compressor and synthesis gas compressor, and realize the relative stability of the inlet pressure of the synthesis gas compressor and the safe and stable operation of the real-time flexible ammonia synthesis system by real-time adjustment of the hydrogen flow under the operating boundary constraints of the ammonia synthesis, the synthesis gas compressor, the hydrogen compressor and the hydrogen storage tank.

[0036] First, the related system architecture involved in the hydrogen storage and supply system control method provided by the embodiments of the present application is described in detail.

[0037] Figure 1 A system schematic diagram of a renewable energy hydrogen production and ammonia synthesis system provided by the embodiments of the present application is shown in Figure 1 As shown in the figure, the hydrogen storage and supply system is a system composed of the first hydrogen storage tank, the second hydrogen storage tank, the hydrogen compressor and the synthesis gas compressor in the renewable energy hydrogen production and ammonia synthesis system.

[0038] Optionally, the input end of the first hydrogen storage tank is connected with the output end of the hydrogen production section, the output end of the first hydrogen storage tank is connected with the input end of the hydrogen compressor and the input end of the second hydrogen storage tank respectively, the output end of the hydrogen compressor is connected with the input end of the second hydrogen storage tank, and the output end of the second hydrogen storage tank is connected with the input end of the synthesis gas compressor.

[0039] Optionally, the renewable energy hydrogen production and ammonia synthesis system further comprises: a renewable energy power generation section, an electric hydrogen production section, and an ammonia synthesis section.

[0040] Optionally, the renewable energy hydrogen production and ammonia synthesis system further comprises: a control device, which is in communication connection with the first hydrogen storage tank, the second hydrogen storage tank, and the hydrogen compressor in the hydrogen storage and supply system, and is used to execute the steps of the hydrogen storage and supply system control method provided in the embodiments of the present application, so as to realize the second-level hydrogen storage and supply regulation, stabilize the inlet gas pressure of the syngas compressor, cope with the wind power fluctuation in the fine time scale, and improve the safety of the system equipment operation and the reliability of the decision result.

[0041] Optionally, the hydrogen storage and supply system control system is a system composed of the first hydrogen storage tank, the second hydrogen storage tank, the hydrogen compressor, the syngas compressor, and the control device in the renewable energy hydrogen production and ammonia synthesis system.

[0042] Optionally, the renewable energy power generation section delivers electric energy to the electric hydrogen production section, the electric hydrogen production section outputs hydrogen which is stored in the first hydrogen storage tank, the first hydrogen storage tank has a large capacity and plays a buffering role to reduce the influence of the electric hydrogen production fluctuation on the ammonia synthesis.

[0043] Illustratively, when the pressure of the first hydrogen storage tank is relatively high and meets the requirement of the syngas compressor inlet pressure, the hydrogen is directly delivered to the second hydrogen storage tank; when the pressure of the first hydrogen storage tank is lower than the requirement of the syngas compressor inlet pressure, the hydrogen is delivered to the second hydrogen storage tank after being pressurized by the hydrogen compressor. Compared with the first hydrogen storage tank, the second hydrogen storage tank has a small capacity and plays a pressure stabilizing role to meet the requirement of the stable pressure at the syngas compressor inlet, and the hydrogen is delivered to the syngas compressor at a relatively stable pressure from the second hydrogen storage tank and is supplied to the ammonia synthesis section after being pressurized.

[0044] The hydrogen storage and supply system control method provided in the embodiments of the present application is described in detail below in combination with multiple embodiments.

[0045] Figure 2 A flowchart of the hydrogen storage and supply system control method provided in the embodiments of the present application is shown in FIG. 1, which comprises the following steps. Figure 2 S201, real-time determination of the current working condition of the hydrogen storage and supply system and the current running information of the hydrogen storage and supply system.

[0046] Optionally, during the operation of the hydrogen storage and supply system, the current working condition of the hydrogen storage and supply system and the current running information of the hydrogen storage and supply system can be determined in real time.

[0047] The current working condition is the running working condition of the hydrogen storage and supply system at the current time. ​

[0048] The current operation information at least includes the current pressure of the first hydrogen storage tank. The current operation information can further include the current pressure of the second hydrogen storage tank, the inlet flow of the first hydrogen storage tank, the outlet flow of the first hydrogen storage tank, and the outlet flow of the second hydrogen storage tank, etc.

[0049] S202, determining a target working condition of the hydrogen storage and supply system according to the current working condition and the current operation information, and entering the target working condition.

[0050] Optionally, the target working condition can be determined according to the current working condition and the current operation information, and the target working condition of the hydrogen storage and supply system is entered. The target working condition can be the current working condition or another working condition other than the current working condition.

[0051] It is worth noting that entering the target working condition of the hydrogen storage and supply system means starting to control the hydrogen storage and supply system to switch from the current working condition to the target working condition. That is, in the present application, after the target working condition is determined, the hydrogen storage and supply system can be controlled to switch from the current working condition to the target working condition so that the hydrogen storage and supply system can operate in the target working condition.

[0052] In an example, when the current working condition is determined, the standard operation information corresponding to the current working condition can be determined, and the current operation information is compared with the standard operation information. If the error between the current operation information and the standard operation information is less than a preset error threshold, it is determined that the current working condition operates normally, that is, the target working condition is determined to be the current working condition, and the hydrogen storage and supply system is controlled to continue operating in the current working condition. If the error between the current operation information and the standard operation information is greater than the preset error threshold, it is determined that the current working condition operates abnormally, that is, the target working condition can be determined to be another working condition other than the current working condition according to the error between the current operation information and the standard operation information, and the hydrogen storage and supply system is controlled to operate in the target working condition.

[0053] In another example, in the current working condition, the current operation information can be compared with a preset working condition switching condition to determine whether the current operation information meets the switching condition from the current working condition to another working condition. If the current operation information meets the switching condition from the current working condition to another working condition, the other working condition can be taken as the target working condition, and the hydrogen storage and supply system is controlled to operate in the target working condition.

[0054] S203, determining target control information of the hydrogen storage and supply system according to the target working condition of the hydrogen storage and supply system.

[0055] Optionally, after the target working condition of the hydrogen storage and supply system is determined, the target control information of the hydrogen storage and supply system can be determined according to the target working condition of the hydrogen storage and supply system.

[0056] In an example, the target control information of the hydrogen storage and supply system can be determined according to target operation information of the hydrogen storage and supply system in the target working condition, wherein the target operation information is used to indicate the expected operation state of the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank in the hydrogen storage and supply system in the target working condition.

[0057] In another example, the target control information of the hydrogen storage and supply system can be determined by comparing the target working condition of the hydrogen storage and supply system with the current working condition of the hydrogen storage and supply system.

[0058] The target control information is used to control the operation state of the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank in the hydrogen storage and supply system. Specifically, the operation state of the hydrogen compressor includes the on-off state of the hydrogen compressor, and the operation state of the first hydrogen storage tank and the second hydrogen storage tank includes pressure and flow rate, etc.

[0059] S204, based on the target control information, control the operation of the hydrogen storage and supply system to adjust the hydrogen input of the syngas compressor in the hydrogen storage and supply system.

[0060] Optionally, after obtaining the target control information, the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank are controlled to operate in the operation state indicated by the target control information, so as to control the operation of the hydrogen storage and supply system and achieve the adjustment of the hydrogen input of the syngas compressor in the hydrogen storage and supply system.

[0061] In the embodiment, the current working condition and the current operation information of the hydrogen storage and supply system are determined in real time, the target working condition of the hydrogen storage and supply system is determined and entered according to the current working condition and the current operation information, the target control information of the hydrogen storage and supply system is determined according to the target working condition of the hydrogen storage and supply system, the target control information is used to control the operation state of the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank in the hydrogen storage and supply system, and the operation of the hydrogen storage and supply system is controlled based on the target control information to adjust the hydrogen input of the syngas compressor in the hydrogen storage and supply system, so as to accurately adjust the output hydrogen flow, effectively suppress the upstream fluctuation, ensure the relatively constant hydrogen pressure delivered to the syngas compressor, and ensure the safety and efficiency of the entire synthetic ammonia process. Moreover, the working condition judgment and control instruction issuing can be completed in a very short time, the power fluctuation in the fine time scale can be effectively dealt with, the safety of the operation and the reliability of the decision result are further improved. In addition, the target working condition of the hydrogen storage and supply system is determined according to the current working condition and the current operation information, and the operation of the hydrogen storage and supply system is controlled based on the target working condition, which can better accommodate intermittent renewable energy and improve energy utilization efficiency.

[0062] As a possible implementation manner, Figure 3A flowchart for determining target control information of a hydrogen storage and supply system is provided in the control method of the hydrogen storage and supply system Figure 3 As shown in the above S203, the target control information of the hydrogen storage and supply system is determined according to the target working condition of the hydrogen storage and supply system, which includes: S301, if the target working condition is not the fourth working condition, the target control information of the hydrogen storage and supply system is determined according to the target working condition and the current pressure of the second hydrogen tank in the hydrogen storage and supply system.

[0063] Optionally, the target working condition can be judged. If the target working condition is the first working condition, the second working condition, the third working condition or the fifth working condition, the target control information of the hydrogen storage and supply system can be calculated according to the target working condition and the current pressure of the second hydrogen tank in the hydrogen storage and supply system.

[0064] The first working condition, the second working condition, the third working condition and the fifth working condition refer to the main control operation mode or the necessary transition mode for real-time adjustment according to the hydrogen supply and demand fluctuation under the premise that the renewable energy hydrogen synthesis ammonia system can normally operate. In the main control operation mode, the core target of the renewable energy hydrogen synthesis ammonia system is to realize rapid response to renewable energy fluctuation, maintain stable inlet pressure of the synthesis gas compressor (to ensure stable reactor feed) and maximize green hydrogen utilization rate under the premise of meeting equipment constraints. In the necessary transition mode, the core target of the renewable energy hydrogen synthesis ammonia system is to gradually rebuild hydrogen supply pressure and flow under the premise of ensuring system equipment safety, to avoid pressure impact, flow fluctuation or equipment overload caused by sudden restart.

[0065] Specifically, the first working condition refers to the normal operation condition. In the first working condition, the first hydrogen tank and the second hydrogen tank are at normal pressure, and hydrogen is directly supplied to the second hydrogen tank. The second working condition refers to the hydrogen compressor start condition. In the second working condition, the hydrogen pressure is insufficient, and the hydrogen compressor is started to supplement the pressure. The third working condition refers to the high pressure condition. In the third working condition, the hydrogen output is inhibited to reduce the pressure of the tank and prevent overpressure. The fifth working condition refers to the "hot standby" recovery condition. In the fifth working condition, the hydrogen pressure increasing capability is restored, high pressure hydrogen is delivered to the second hydrogen tank, and the hydrogen production side is not intervened to maximize the new energy utilization rate. At the same time, the initial hydrogen supply intensity is limited to prevent pressure drop, maintain stable hydrogen supply end pressure, and support subsequent compression and reaction processes.

[0066] S302, if the target working condition is the fourth working condition, the target control information of the hydrogen storage and supply system is determined according to the target working condition and the preset hot standby rule.

[0067] Optionally, if the target working condition is the fourth working condition, the target control information of the hydrogen storage and supply system is determined according to the target working condition and a preset hot standby rule.

[0068] The hot standby rule refers to a rule related to operation when the hydrogen storage and supply system is in a hot standby state. The fourth working condition refers to a working condition that belongs to an abnormal or critical state processing mechanism. Specifically, the fourth working condition is a hot standby state working condition, wherein the hot standby state means stopping hydrogen supply, which means that the ammonia synthesis reaction is temporarily suspended.

[0069] In the fourth working condition, continuous production is actively abandoned to avoid risks such as compressor surge and catalyst deactivation caused by excessively low feed pressure, and at the same time, all resources are used to increase the pressure of the first hydrogen storage tank, and load tracking is no longer considered, thereby preventing equipment damage or process out of control.

[0070] By judging the target working condition, the corresponding target control information is determined under different working conditions, which can decouple the processing of "flexible operation" and "recovery mechanism after breaking through the safety boundary", divide the regular control layer and the safety guarantee layer of the system, thereby realizing active fine adjustment and energy-saving operation of the hydrogen storage and supply system during operation through the regular control layer, and realizing passive protection and restart of the hydrogen storage and supply system during operation through the safety guarantee layer, which significantly improves the robustness and engineering feasibility of the entire green hydrogen synthesis ammonia system.

[0071] As a possible implementation manner, Figure 4 Another flowchart for determining the target control information of the hydrogen storage and supply system in the control method of the hydrogen storage and supply system provided by the embodiments of the present application is shown in Figure 4 The determination of the target control information of the hydrogen storage and supply system according to the target working condition and the current pressure of the second hydrogen storage tank in S301 includes: S401, determining the target state of the hydrogen compressor according to the target working condition of the hydrogen storage and supply system.

[0072] Optionally, the target state of the hydrogen compressor can be determined according to the target working condition of the hydrogen storage and supply system and a pre-stored mapping relationship between the target working condition and the target state of the hydrogen compressor. The target state of the hydrogen compressor includes an open state and a closed state.

[0073] For example, when the target working condition is the first working condition, the target state of the hydrogen compressor is the closed state. When the target working condition is the second working condition, the target state of the hydrogen compressor is the open state. When the target working condition is the third working condition, the target state of the hydrogen compressor is the closed state.

[0074] S402, determining the target outlet flow of the second hydrogen storage tank according to the current pressure of the second hydrogen storage tank.

[0075] Optionally, the target outlet flow of the second hydrogen storage tank can be calculated by a closed-loop feedback controller (PID) according to the current pressure of the second hydrogen storage tank.

[0076] Optionally, the target outlet flow of the second hydrogen storage tank can also be calculated by inputting the current pressure of the second hydrogen storage tank into a preset calculation formula.

[0077] S403, taking the target state of the hydrogen compressor and the target outlet flow of the second hydrogen storage tank as the first control information of the hydrogen storage and supply system.

[0078] Optionally, the target state of the hydrogen compressor and the target outlet flow of the second hydrogen storage tank are taken as the first control information of the hydrogen storage and supply system.

[0079] S404, if the target working condition is the first working condition, taking the first control information as the target control information.

[0080] Optionally, the target working condition is judged, and if the target working condition is the first working condition, the first control information is taken as the target control information.

[0081] S405, if the target working condition is not the first working condition, determining the second control information according to the target working condition, and taking the first control information and the second control information as the target control information.

[0082] Optionally, the target working condition is judged, and if the target working condition is not the first working condition, the second control information is determined according to the target working condition, and the first control information and the second control information are taken as the target control information.

[0083] As a possible implementation manner, Figure 5 A flowchart for determining the target outlet flow of the second hydrogen storage tank in the hydrogen storage and supply system control method provided by the embodiments of the present application is shown in Figure 5 The determination of the target outlet flow of the second hydrogen storage tank in S402 according to the current pressure of the second hydrogen storage tank includes: S501, calculating the difference between the current pressure of the second hydrogen storage tank and the inlet pressure rated threshold of the syngas compressor.

[0084] Optionally, the difference between the current pressure of the second hydrogen storage tank and the inlet pressure rated threshold of the syngas compressor can be calculated , which can be specifically calculated according to the following formula:

[0085] Among them, is the current pressure of the second hydrogen storage tank, is the inlet pressure rated threshold of the syngas compressor.

[0086] S502, input the difference value into a preset incremental calculation formula to calculate a difference value increment of the second hydrogen storage tank.

[0087] Optionally, the difference value is input into a preset incremental calculation formula to calculate a difference value increment of the second hydrogen storage tank , wherein the preset incremental calculation formula can be implemented based on a closed-loop feedback controller (PID for short), and specific reference can be made to the following formula:

[0088] , wherein is a proportional gain, is an integral gain, is a differential gain.

[0089] S503, correcting the difference value increment of the second hydrogen storage tank according to a preset first ammonia synthesis maximum adjustment rate to obtain a target outlet flow.

[0090] Optionally, according to the preset first ammonia synthesis maximum adjustment rate Ramp*Q rate , the difference value increment of the second hydrogen storage tank is corrected, and the corrected difference value increment and the target outlet flow of the previous moment are summed up, and the result obtained by the summation is corrected by a preset upper flow threshold and a preset lower flow threshold to obtain the target outlet flow. The first ammonia synthesis maximum adjustment rate refers to the maximum adjustment speed of the ammonia synthesis in normal operation.

[0091] The difference value increment of the second hydrogen storage tank is calculated by the current pressure of the second hydrogen storage tank and the preset incremental calculation formula, and the target outlet flow of the second hydrogen storage tank is obtained by correcting the preset first ammonia synthesis maximum adjustment rate, the preset upper flow threshold and the preset lower flow threshold, which can control the pressure of the second hydrogen storage tank within the rated value of the syngas compressor inlet pressure, and due to the correction, it can also avoid the reactor temperature fluctuation, prevent the compressor from surging or overloading, maintain the minimum load operation condition and match the dynamic response ability of the equipment, thereby ensuring the safe and stable operation of the ammonia synthesis process.

[0092] As a possible implementation manner, the determination of the second control information according to the target working condition in S405 comprises: If the target working condition is the second working condition, the target outlet flow of the first hydrogen storage tank is determined according to the historical pressure information of the first hydrogen storage tank and the preset first ammonia synthesis maximum adjustment rate, and the target outlet flow of the first hydrogen storage tank is taken as the second control information.

[0093] Optionally, if the target working condition is the second working condition, the target outlet flow of the first hydrogen storage tank is calculated according to the historical pressure information of the first hydrogen storage tank and the preset first synthetic ammonia maximum adjustment rate, and the target outlet flow of the first hydrogen storage tank is taken as the second control information.

[0094] Exemplarily, the target outlet flow of the first hydrogen storage tank is calculated according to the following formula:

[0095] wherein, Pmin is the minimum value of the pressure of the first hydrogen storage tank, Pmax is the maximum value of the pressure of the first hydrogen storage tank, which can be determined by the historical pressure information of the first hydrogen storage tank. = 1.05Q ASR,min , wherein Q ASR,min is the minimum flow threshold allowed by the ammonia synthesis section being opened. Qtarget, t-1 is the target outlet flow of the second hydrogen storage tank at the previous moment, Qmax is the preset first synthetic ammonia maximum adjustment rate, Pmax is the maximum value of the pressure of the first hydrogen storage tank, which can be determined by the historical pressure information of the first hydrogen storage tank.

[0096] As a possible implementation manner, the determination of the second control information according to the target working condition in S405 comprises: If the target working condition is the third working condition, the target inlet flow of the first hydrogen storage tank is determined according to the current outlet flow of the second hydrogen storage tank, and the target inlet flow of the first hydrogen storage tank is taken as the second control information.

[0097] Optionally, if the target working condition is the third working condition, the target inlet flow of the first hydrogen storage tank is calculated according to the current outlet flow of the second hydrogen storage tank, and the target inlet flow of the first hydrogen storage tank is taken as the second control information.

[0098] wherein, the current outlet flow of the second hydrogen storage tank can be the target outlet flow of the second hydrogen storage tank, or the measured outlet flow of the second hydrogen storage tank at the current moment.

[0099] This means that when the target working condition is the third working condition, the target inlet flow of the first hydrogen storage tank can be calculated according to the theoretical outlet flow of the second hydrogen storage tank to obtain the target inlet flow of the first hydrogen storage tank, or can be calculated according to the actual outlet flow of the second hydrogen storage tank to obtain the target inlet flow of the first hydrogen storage tank, which can be selected according to the actual situation, and the present application does not limit this.

[0100] It should be noted that, in an ideal case, the target outlet flow of the second hydrogen storage tank is the same as the measured outlet flow of the second hydrogen storage tank at the current moment. ​

[0101] Exemplarily, the target inlet flow of the first hydrogen storage tank can be calculated according to the following formula :

[0102] wherein, is the target outlet flow of the second hydrogen storage tank, is the hydrogen flow input from the electrolytic hydrogen production section.

[0103] As a possible implementation, the target control information of the hydrogen storage and supply system is determined according to the target working condition and the preset hot standby rule in S302, comprising: If the target working condition is the fourth working condition, the target state of the hydrogen compressor is determined to be the closed state, the target outlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are determined to be the first preset value, and the target state of the hydrogen compressor, the target inlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are all taken as the target control information.

[0104] Optionally, if the target working condition is the fourth working condition, i.e. the hot standby working condition, the target state of the hydrogen compressor is determined to be the closed state, and the target outlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are assigned to the first preset value, so that the pressure of the first hydrogen storage tank and the second hydrogen storage tank is restored to the normal level as soon as possible. Exemplarily, the first preset value can be 0.

[0105] Optionally, the target state of the hydrogen compressor, the target inlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are all taken as the target control information.

[0106] As a possible implementation, the second control information is determined according to the target working condition in S405, comprising: If the target working condition is the fifth working condition, the target state of the hydrogen compressor is determined to be the open state, the target outlet flow of the first hydrogen storage tank is determined according to the historical outlet flow of the first hydrogen storage tank and the preset second synthetic ammonia maximum adjustment rate, and the target state of the hydrogen compressor and the target outlet flow of the first hydrogen storage tank are taken as the second control information.

[0107] Optionally, if the target working condition is the fifth working condition, i.e. the hot standby recovery working condition, the target state of the hydrogen compressor can be determined to be the open state, the target outlet flow of the first hydrogen storage tank is determined according to the historical outlet flow of the first hydrogen storage tank and the preset second synthetic ammonia maximum adjustment rate, and the target state of the hydrogen compressor and the target outlet flow of the first hydrogen storage tank are taken as the second control information.

[0108] The second maximum adjustment rate of ammonia synthesis refers to the maximum adjustment speed of ammonia synthesis during hot standby recovery, and the second maximum adjustment rate of ammonia synthesis is less than the first maximum adjustment rate of ammonia synthesis.

[0109] For example, the target outlet flow rate of the first hydrogen storage tank The following formula can be used to calculate the compressor flow rate to the lower limit of the synthetic ammonia load under normal operating conditions, based on the maximum rate of synthetic ammonia adjustment during the hot standby recovery period:

[0110] in, This represents the target outlet flow rate of the first hydrogen storage tank at the previous moment. This is the preset maximum adjustment rate for the second ammonia synthesis.

[0111] The above describes in detail the process of determining the target control information of the hydrogen storage and supply system based on the target operating conditions of the hydrogen storage and supply system. The following describes in detail the process of determining and entering the target operating conditions of the hydrogen storage and supply system.

[0112] As one possible implementation, S202 above determines and enters the target operating condition of the hydrogen storage and supply system based on the current operating conditions and current operational information, including: If the current operating condition is the first operating condition, and the current pressure of the first hydrogen storage tank is... The pressure threshold P for the hydrogen compressor to start is less than the pressure threshold P. CR,C The target working condition is determined to be the second working condition, and the second working condition is entered.

[0113] If the current operating condition is the first operating condition, and the current pressure of the first hydrogen storage tank is... The inlet pressure is greater than the upper limit threshold P of the syngas compressor. CR,UL The target working condition is determined to be the third working condition, and the third working condition is entered.

[0114] If the current operating condition is the second operating condition, and the current pressure of the first hydrogen storage tank is... If the pressure exceeds the pressure threshold for shutting down the hydrogen compressor, the target operating condition is determined as the first operating condition, and the system enters the first operating condition.

[0115] If the current operating condition is the second operating condition, and the current pressure of the first hydrogen storage tank is... Less than the hot standby trigger threshold P CR,SB If so, the target working condition is determined to be the fourth working condition, and the process enters the fourth working condition.

[0116] If the current operating condition is the third operating condition, and the current pressure of the first hydrogen storage tank is... equal to the current pressure of the second hydrogen storage tank And the current pressure of the first hydrogen storage tank less than or equal to an upper threshold value P of an inlet pressure of the syngas compressor CR,UL determining that the target working condition is the first working condition and entering the first working condition.

[0117] If the current working condition is the fourth working condition and the current pressure of the first hydrogen storage tank is greater than or equal to a hot standby condition recovery threshold value P determining that the target working condition is the fifth working condition and entering the fifth working condition. CR,RE

[0118] If the current working condition is the fifth working condition and the outlet flow of the second hydrogen storage tank is greater than or equal to a minimum flow threshold value allowed for opening of the ammonia synthesis section, determining that the target working condition is the second working condition and entering the second working condition.

[0119] Based on the same inventive concept, the embodiments of the present application also provide a hydrogen storage and supply system control device corresponding to the hydrogen storage and supply system control method. Since the principle of solving problems in the device of the embodiments of the present application is similar to the hydrogen storage and supply system control method described above, the implementation of the device can be referred to the implementation of the method, and the repeated parts will not be described here.

[0120] Referring to FIG. 6, Figure 6 as shown, Figure 6 a schematic diagram of a hydrogen storage and supply system control device provided by the embodiments of the present application, the device comprising: a running determination module 601, a working condition determination module 602, a control determination module 603 and a control module 604; wherein, The running determination module 601 is configured to determine the current working condition of the hydrogen storage and supply system and the current running information of the hydrogen storage and supply system in real time, and the current running information at least includes: the current pressure of the first hydrogen storage tank. The working condition determination module 602 is configured to determine and enter the target working condition of the hydrogen storage and supply system according to the current working condition and the current running information. The control determination module 603 is configured to determine the target control information of the hydrogen storage and supply system according to the target working condition of the hydrogen storage and supply system, and the target control information is used to control the running state of the hydrogen compressor, the first hydrogen storage tank and the second hydrogen storage tank in the hydrogen storage and supply system. The control module 604 is configured to control the running of the hydrogen storage and supply system based on the target control information, so as to adjust the hydrogen input of the syngas compressor in the hydrogen storage and supply system.

[0121] Optionally, the control determination module 603 is specifically configured to: If the target working condition is not the fourth working condition, determine the target control information of the hydrogen storage and supply system according to the target working condition and the current pressure of the second hydrogen storage tank in the hydrogen storage and supply system; If the target working condition is the fourth working condition, determine the target control information of the hydrogen storage and supply system according to the target working condition and the preset hot standby rule. ​

[0122] Optionally, the control determining module 603 is specifically configured to: determine a target state of the hydrogen compressor according to the target working condition of the hydrogen storage and supply system; determine a target outlet flow of the second hydrogen storage tank according to the current pressure of the second hydrogen storage tank; take the target state of the hydrogen compressor and the target outlet flow of the second hydrogen storage tank as the first control information of the hydrogen storage and supply system; if the target working condition is the first working condition, take the first control information as the target control information; if the target working condition is not the first working condition, determine second control information according to the target working condition, and take the first control information and the second control information as the target control information.

[0123] Optionally, the control determining module 603 is specifically configured to: calculate a difference between the current pressure of the second hydrogen storage tank and an inlet pressure rated threshold of the syngas compressor; input the difference into a preset incremental calculation formula to obtain a difference increment of the second hydrogen storage tank; correct the difference increment of the second hydrogen storage tank according to a preset first maximum ammonia adjustment rate to obtain the target outlet flow.

[0124] Optionally, the control determining module 603 is specifically configured to: if the target working condition is the second working condition, determine a target outlet flow of the first hydrogen storage tank according to historical pressure information of the first hydrogen storage tank and a preset first maximum ammonia adjustment rate, and take the target outlet flow of the first hydrogen storage tank as the second control information.

[0125] Optionally, the control determining module 603 is specifically configured to: if the target working condition is the third working condition, determine a target inlet flow of the first hydrogen storage tank according to the current outlet flow of the second hydrogen storage tank, and take the target inlet flow of the first hydrogen storage tank as the second control information.

[0126] Optionally, the control determining module 603 is specifically configured to: if the target working condition is the fourth working condition, determine that the target state of the hydrogen compressor is a closed state, and determine that the target outlet flow of the first hydrogen storage tank and the target outlet flow of the second hydrogen storage tank are first preset values, and take the target state of the hydrogen compressor, the target inlet flow of the first hydrogen storage tank, and the target outlet flow of the second hydrogen storage tank as the target control information.

[0127] Optionally, the control determining module 603 is specifically configured to: If the target operating condition is the fifth operating condition, the target state of the hydrogen compressor is determined to be the on state. Based on the historical outlet flow rate of the first hydrogen storage tank and the preset maximum adjustment rate of the second synthetic ammonia, the target outlet flow rate of the first hydrogen storage tank is determined, and the target state of the hydrogen compressor and the target outlet flow rate of the first hydrogen storage tank are used as the second control information.

[0128] Optionally, the operating condition determination module 602 is specifically used for: If the current operating condition is the first operating condition, and the current pressure of the first hydrogen storage tank is less than the pressure threshold for the hydrogen compressor to start, the target operating condition is determined to be the second operating condition, and the second operating condition is entered. If the current operating condition is the first operating condition, and the current pressure of the first hydrogen storage tank is greater than the upper limit threshold of the inlet pressure of the syngas compressor, the target operating condition is determined to be the third operating condition, and the third operating condition is entered. If the current operating condition is the second operating condition, and the current pressure of the first hydrogen storage tank is greater than the pressure threshold for shutting down the hydrogen compressor, then the target operating condition is determined to be the first operating condition, and the first operating condition is entered. If the current operating condition is the second operating condition, and the current pressure of the first hydrogen storage tank is less than the hot standby operating condition trigger threshold, then the target operating condition is determined to be the fourth operating condition, and the fourth operating condition is entered. If the current operating condition is the third operating condition, and the current pressure of the first hydrogen storage tank is equal to the current pressure of the second hydrogen storage tank, and the current pressure of the first hydrogen storage tank is less than or equal to the upper limit threshold of the inlet pressure of the syngas compressor, then the target operating condition is determined to be the first operating condition, and the first operating condition is entered. If the current operating condition is the fourth operating condition, and the current pressure of the first hydrogen storage tank is greater than or equal to the hot standby operating condition recovery threshold, then the target operating condition is determined to be the fifth operating condition, and the fifth operating condition is entered. If the current operating condition is the fifth operating condition, and the outlet flow rate of the second hydrogen storage tank is greater than or equal to the minimum flow rate threshold allowed for the ammonia synthesis section to be opened, the target operating condition is determined to be the second operating condition, and the second operating condition is entered.

[0129] The processing flow of each module in the device and the interaction flow between each module can be referred to the relevant descriptions in the above method embodiments, and will not be detailed here.

[0130] This application also provides a control device, such as... Figure 7 As shown, Figure 7 The schematic diagram of the control device structure provided in the embodiments of this application includes: a processor 701, a memory 702, and optionally, a bus 703. The memory 702 stores machine-readable instructions executable by the processor 701 (e.g., ...). Figure 6The device in the method embodiment corresponds to the determination module 601, the working condition determination module 602, the control determination module 603 and the control module 604 in the device in the method embodiment, and the corresponding execution instructions, etc. When the control device is running, the processor 701 communicates with the memory 702 through the bus 703, and the machine readable instructions are executed by the processor 701 to execute the steps of the above-mentioned hydrogen storage and supply system control method.

[0131] The embodiment of the present application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to execute the steps of the above-mentioned hydrogen storage and supply system control method.

[0132] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the above-mentioned system and device can refer to the corresponding process in the method embodiment, and the present application will not be described again. In the several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. The above-mentioned device embodiment is only schematic, for example, the division of the modules is only a logical function division, and actual implementation can have another division manner, and for example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be indirect coupling or communication connection through some communication interface, device or module, and can be electrical, mechanical or other forms.

[0133] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or say the parts that make contributions to the prior art or parts of the technical solutions can be embodied in the form of software products, and the computer software products are stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk and various program code storage media.

[0134] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A control method for a hydrogen storage and supply system, characterized in that, The method includes: The current operating status of the hydrogen storage and supply system and its current operating information are determined in real time. The current operating information includes at least the current pressure of the first hydrogen storage tank. Based on the current operating conditions and the current operational information, the target operating conditions of the hydrogen storage and supply system are determined and entered. Based on the target operating conditions of the hydrogen storage and supply system, the target control information of the hydrogen storage and supply system is determined. The target control information is used to control the operating status of the hydrogen compressor, the first hydrogen storage tank, and the second hydrogen storage tank in the hydrogen storage and supply system. Based on the target control information, the operation of the hydrogen storage and supply system is controlled to adjust the hydrogen input of the syngas compressor in the hydrogen storage and supply system.

2. The hydrogen storage and supply system control method according to claim 1, characterized in that, The step of determining the target control information of the hydrogen storage and supply system based on the target operating conditions of the hydrogen storage and supply system includes: If the target operating condition is not the fourth operating condition, then the target control information of the hydrogen storage and supply system is determined based on the target operating condition and the current pressure of the second hydrogen storage tank in the hydrogen storage and supply system. If the target operating condition is the fourth operating condition, then the target control information of the hydrogen storage and supply system is determined according to the target operating condition and the preset hot standby rules.

3. The hydrogen storage and supply system control method according to claim 2, characterized in that, The step of determining the target control information of the hydrogen storage and supply system based on the target operating condition and the current pressure of the second hydrogen storage tank in the hydrogen storage and supply system includes: The target state of the hydrogen compressor is determined based on the target operating conditions of the hydrogen storage and supply system. Determine the target outlet flow rate of the second hydrogen storage tank based on the current pressure of the second hydrogen storage tank; The target state of the hydrogen compressor and the target outlet flow rate of the second hydrogen storage tank are used as the first control information of the hydrogen storage and supply system. If the target operating condition is the first operating condition, then the first control information is used as the target control information; if the target operating condition is not the first operating condition, then the second control information is determined according to the target operating condition, and the first control information and the second control information are used as the target control information.

4. The hydrogen storage and supply system control method according to claim 3, characterized in that, Determining the target outlet flow rate of the second hydrogen storage tank based on its current pressure includes: Calculate the difference between the current pressure of the second hydrogen storage tank and the rated threshold of the inlet pressure of the syngas compressor; The difference is input into a preset incremental calculation formula to calculate the difference increment of the second hydrogen storage tank. Based on the preset maximum adjustment rate for first ammonia synthesis, the differential increment of the second hydrogen storage tank is corrected to obtain the target outlet flow rate.

5. The hydrogen storage and supply system control method according to claim 3, characterized in that, The step of determining the second control information based on the target operating condition includes: If the target operating condition is the second operating condition, the target outlet flow rate of the first hydrogen storage tank is determined based on the historical pressure information of the first hydrogen storage tank and the preset maximum adjustment rate of the first synthetic ammonia, and the target outlet flow rate of the first hydrogen storage tank is used as the second control information.

6. The hydrogen storage and supply system control method according to claim 3, characterized in that, The step of determining the second control information based on the target operating condition includes: If the target operating condition is the third operating condition, the target inlet flow rate of the first hydrogen storage tank is determined based on the current outlet flow rate of the second hydrogen storage tank, and the target inlet flow rate of the first hydrogen storage tank is used as the second control information.

7. The hydrogen storage and supply system control method according to claim 2, characterized in that, The step of determining the target control information of the hydrogen storage and supply system based on the target operating conditions and preset hot standby rules includes: If the target operating condition is the fourth operating condition, the target state of the hydrogen compressor is determined to be the off state, and the target outlet flow rate of the first hydrogen storage tank and the target outlet flow rate of the second hydrogen storage tank are determined to be the first preset value. The target state of the hydrogen compressor, the target inlet flow rate of the first hydrogen storage tank, and the target outlet flow rate of the second hydrogen storage tank are all used as the target control information.

8. The hydrogen storage and supply system control method according to claim 3, characterized in that, The step of determining the second control information based on the target operating condition includes: If the target operating condition is the fifth operating condition, the target state of the hydrogen compressor is determined to be the on state, and the target outlet flow rate of the first hydrogen storage tank is determined according to the historical outlet flow rate of the first hydrogen storage tank and the preset second maximum adjustment rate of ammonia synthesis. The target state of the hydrogen compressor and the target outlet flow rate of the first hydrogen storage tank are used as the second control information.

9. The hydrogen storage and supply system control method according to claim 1, characterized in that, The step of determining and entering the target operating condition of the hydrogen storage and supply system based on the current operating condition and the current operating information includes: If the current operating condition is the first operating condition, and the current pressure of the first hydrogen storage tank is less than the pressure threshold for starting the hydrogen compressor, the target operating condition is determined to be the second operating condition, and the second operating condition is entered. If the current operating condition is the first operating condition, and the current pressure of the first hydrogen storage tank is greater than the upper limit threshold of the inlet pressure of the syngas compressor, the target operating condition is determined to be the third operating condition, and the third operating condition is entered. If the current operating condition is the second operating condition, and the current pressure of the first hydrogen storage tank is greater than the pressure threshold for shutting down the hydrogen compressor, then the target operating condition is determined to be the first operating condition, and the process enters the first operating condition. If the current operating condition is the second operating condition, and the current pressure of the first hydrogen storage tank is less than the hot standby operating condition trigger threshold, then the target operating condition is determined to be the fourth operating condition, and the fourth operating condition is entered. If the current operating condition is the third operating condition, and the current pressure of the first hydrogen storage tank is equal to the current pressure of the second hydrogen storage tank, and the current pressure of the first hydrogen storage tank is less than or equal to the upper limit threshold of the inlet pressure of the syngas compressor, then the target operating condition is determined to be the first operating condition, and the first operating condition is entered. If the current operating condition is the fourth operating condition, and the current pressure of the first hydrogen storage tank is greater than or equal to the hot standby operating condition recovery threshold, then the target operating condition is determined to be the fifth operating condition, and the fifth operating condition is entered. If the current operating condition is the fifth operating condition, and the outlet flow rate of the second hydrogen storage tank is greater than or equal to the minimum flow rate threshold allowed for the ammonia synthesis section to be opened, the target operating condition is determined to be the second operating condition, and the second operating condition is entered.

10. A control system for a hydrogen storage and supply system, the control system comprising: The control equipment and hydrogen storage and supply system include at least: a first hydrogen storage tank, a second hydrogen storage tank, a hydrogen compressor, and a syngas compressor. The input end of the first hydrogen storage tank is connected to the output end of the electro-hydrogen production section. The output end of the first hydrogen storage tank is connected to the input end of the hydrogen compressor and the input end of the second hydrogen storage tank, respectively. The output end of the hydrogen compressor is connected to the input end of the second hydrogen storage tank, and the output end of the second hydrogen storage tank is connected to the input end of the syngas compressor. The control device is communicatively connected to the first hydrogen storage tank, the second hydrogen storage tank, and the hydrogen compressor in the hydrogen storage and supply system. The control device is used to perform the steps of the hydrogen storage and supply system control method according to any one of claims 1-9.

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