Hydrogen storage and transportation method and device of hydrogen production system and storage medium

Abstract

The invention relates to a hydrogen storage and transportation method and device of a hydrogen production system and a storage medium, and relates to the technical field of hydrogen production, hydrogen storage and pipeline hydrogen transportation. According to the annual hydrogen unit time fluctuation yield of the hydrogen production unit and the maximum hydrogen storage volume of the hydrogen storage unit, determining conditions are constructed; dividing the annual hydrogen fluctuation yield per unit time of the hydrogen production unit into a plurality of time periods by utilizing the judgment conditions, so that the hydrogen fluctuation yield of each time period can be stably output according to the average hydrogen yield of the time period; and the average hydrogen yield in the multiple time periods serves as the input quantity input to the starting end of the long-distance pipeline unit by the hydrogen storage unit in each time period to be conveyed. Through the content of the invention, the hydrogen buffer capacity of the hydrogen production end storage tank and the hydrogen storage capacity of the long-distance pipeline unit can be considered, the stability of hydrogen output is improved, and the configuration volume requirement of the storage tank and the engineering cost are reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hydrogen production, storage and transmission, and in particular to a hydrogen storage and transmission method, device and storage medium for a hydrogen production system. Background Art

[0002] Hydrogen energy, with its multiple properties as a carrier of renewable energy and a zero-carbon, pollution-free, high-quality raw material and fuel, can play an important role in the transformation of the energy supply and consumption sides.

[0003] In the existing technology, wind and solar power systems are usually used for electrolysis and hydrogen production, and storage tanks are configured to cache hydrogen. However, wind-solar synergistic power generation and hydrogen production by electrolysis is a complex system engineering, involving many challenges such as wind-solar power generation complementation, wind-solar power generation and combined hydrogen production by electrolysis, and power generation, hydrogen production, energy storage, and hydrogen storage coupling regulation and control. Many scholars, research institutes and enterprises at home and abroad have carried out a lot of research work for this purpose, and have achieved remarkable results around the goals of safety, efficiency, wide range adaptation and reliability of wind-solar synergistic power generation and hydrogen production by electrolysis. However, even so, due to the inherent characteristics of this production model, the volatility of hydrogen production under the constraint of low-cost goals will be unavoidable in the short term, resulting in the inability to stably supply hydrogen to the terminal. When the unstable hydrogen fluctuation production is directly sent to the transmission pipeline, the hydrogen flow at the beginning of the pipeline will fluctuate greatly, and then a larger hydrogen storage spherical tank volume needs to be configured at the hydrogen production project site. The large-scale centralized arrangement of hydrogen storage tanks not only brings higher safety risks, but also increases the land investment and equipment investment, and increases the cost of use. Summary of the invention

[0004] The present disclosure provides a hydrogen storage and transportation method, device and storage medium for a hydrogen production system, which can take into account the hydrogen buffering capacity of the hydrogen production end storage tank and the hydrogen storage capacity of the long-distance pipeline unit itself, improve the stability of hydrogen output, and reduce the storage tank configuration volume requirements and engineering costs.

[0005] In a first aspect, the present disclosure provides a hydrogen storage and transportation method for a hydrogen production system, wherein the hydrogen production system comprises a hydrogen production unit, a hydrogen storage unit, and a long-distance pipeline unit connected in sequence; the hydrogen storage and transportation method comprises:

[0006] Acquire attribute parameters of the hydrogen production unit and the hydrogen storage unit; the attribute parameters include the annual hydrogen production per unit time fluctuation of the hydrogen production unit and the maximum hydrogen storage capacity of the hydrogen storage unit;

[0007] According to the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year and the maximum hydrogen storage capacity of the hydrogen storage unit, a judgment condition is constructed to determine whether the hydrogen production of the hydrogen production unit in any period of time can be stably output from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production of the period;

[0008] The hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year is divided into several time periods by using the judgment conditions, so that the hydrogen production fluctuation in each time period can be stably output according to the average hydrogen production in the time period;

[0009] The average hydrogen production in several time periods is used as the input amount of the hydrogen storage unit to the beginning of the long-distance pipeline unit in each time period for transportation.

[0010] In some embodiments, the determination condition for determining whether the hydrogen production of the hydrogen production unit in any period of time can be stably output from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production in the period of time according to the hydrogen production unit's annual unit time fluctuation production and the maximum hydrogen storage capacity of the hydrogen storage unit comprises:

[0011] Based on the supply and demand balance principle of hydrogen storage tank filling and degassing, a matching relationship between the allowed hydrogen storage volume and the hydrogen fluctuating output at the beginning of the long-distance pipeline unit is established;

[0012] According to the annual hydrogen production per unit time fluctuation of the hydrogen production unit and the matching relationship, the average hydrogen production matched by the hydrogen storage volume in any period is determined; the average hydrogen production is used as the hydrogen fluctuation output input to the beginning of the long-distance pipeline unit in any period;

[0013] The hydrogen storage volume matching the average hydrogen production in any period is smaller than the maximum hydrogen storage capacity of the hydrogen storage unit as a determination condition for stably outputting hydrogen from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production in the period.

[0014] In some embodiments, the method of using the determination condition to divide the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year into several time periods, so that the hydrogen production fluctuation of each time period can be stably output according to the average hydrogen production of the time period, includes:

[0015] The hydrogen production of the hydrogen production unit throughout the year is accumulated starting from the first unit time, and the average hydrogen production in the accumulated time period is simultaneously calculated until the average hydrogen production in the accumulated time period does not meet the judgment condition;

[0016] Pick up the time period that meets the judgment conditions before the cumulative calculation stops, as well as the hydrogen fluctuation production and average hydrogen production per unit time in the time period;

[0017] Starting from picking up the next unit time of the time period that meets the judgment conditions, the above steps are repeated until all the hydrogen unit time fluctuation production of the hydrogen production unit throughout the year are traversed to obtain the hydrogen fluctuation production of several time periods.

[0018] In some embodiments, the hydrogen production of the hydrogen production unit throughout the year is accumulated starting from the first unit time, and the average hydrogen production in the accumulated time period is simultaneously calculated until the average hydrogen production in the accumulated time period does not meet the judgment condition, including:

[0019] The hydrogen production of the hydrogen production unit throughout the year is accumulated starting from the first unit time to determine the sum of the hydrogen fluctuation production in the accumulation time period;

[0020] Calculate the average hydrogen production in this period according to the sum of the hydrogen fluctuation production in the accumulated time period;

[0021] Determine whether the average hydrogen production during this period meets the determination conditions;

[0022] If it is in compliance, the cumulative calculation of hydrogen fluctuation production will continue, and the cumulative time period and the average hydrogen production in the time period will be updated;

[0023] If it does not meet the requirements, the accumulation calculation will be stopped.

[0024] In some embodiments, the obtaining of the property parameters of the hydrogen production unit and the hydrogen storage unit includes:

[0025] Obtain the hydrogen fluctuation production per unit time of the hydrogen production unit throughout the year and the number and attribute parameters of the hydrogen storage spherical tanks of the hydrogen storage unit;

[0026] According to the number of hydrogen storage spherical tanks of the hydrogen storage unit and the property parameters of the hydrogen storage spherical tanks, the maximum hydrogen storage capacity that the hydrogen storage unit can provide is determined.

[0027] In some embodiments, it also includes:

[0028] Get the attribute parameters of the long-distance pipeline unit;

[0029] According to the property parameters of the long-distance pipeline unit and the compression performance of hydrogen, the hydrogen transmission pressure in the long-distance pipeline unit is determined to ensure stable output at the outlet end of the long-distance pipeline unit.

[0030] In a second aspect, the present disclosure provides a hydrogen production system, comprising a hydrogen production unit, a hydrogen storage unit, a long-distance pipeline unit and a control unit; the hydrogen production unit, the hydrogen storage unit and the long-distance pipeline unit are connected in sequence and are all connected to the control unit; the control unit is used to execute the hydrogen storage and transportation method described in the above aspects.

[0031] In some embodiments, it also includes a power generation unit connected to the hydrogen production unit and a power storage unit connected to the power generation unit; the power generation unit includes any one or both of a wind power generation unit and a photovoltaic power generation unit; the power storage unit is adapted to the wide power capacity of the hydrogen production unit.

[0032] In a third aspect, the present disclosure provides a computer device, including a memory, a processor, and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps of the method described in the above aspects.

[0033] In a fourth aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method described in the above aspects when executed by a processor.

[0034] In a fifth aspect, the present disclosure provides a computer program product, including a computer program / instructions, which implements the steps of the method described in the above aspects when the computer program is executed by a processor.

[0035] The present disclosure provides a hydrogen storage and transportation method, device and storage medium for a hydrogen production system, which uses a hydrogen storage unit as the starting point for transportation to a long-distance pipeline unit, so that hydrogen can be stored in combination with the hydrogen storage unit and the long-distance pipeline, taking into account the hydrogen buffering capacity of the hydrogen storage unit and the hydrogen storage capacity of the long-distance pipeline unit itself, thereby reducing the volume requirements of the hydrogen production system for the hydrogen storage unit and reducing the project investment cost;

[0036] By dividing the annual fluctuating hydrogen production of the hydrogen production unit into several time periods that meet the judgment conditions, the hydrogen delivered to the inlet of the long-distance pipeline unit can be output with small amplitude and low frequency fluctuations, reducing the volume requirements of the hydrogen storage unit, so that the hydrogen with fluctuating production produced by the hydrogen production unit can be relatively smoothly transported within the long-distance pipeline unit, thereby improving the stability of the long-distance pipeline operation. Based on the compressibility of hydrogen, the outlet of the long-distance pipeline is controlled by pressure regulation to achieve stable output, thereby improving the stability of hydrogen use at the outlet of the long-distance pipeline and reducing the safety risks and investment costs of large-scale hydrogen storage tank configuration of the hydrogen storage unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present disclosure will be described in more detail below based on embodiments and with reference to the accompanying drawings:

[0038] Figure 1 A schematic diagram of a hydrogen storage and transportation method for a hydrogen production system provided in an embodiment of the present disclosure;

[0039] Figure 2 A schematic diagram of the connection relationship between the units of the hydrogen production system provided in the embodiment of the present disclosure;

[0040] Figure 3 The embodiment of the present disclosure corresponds to Figure 1 An exemplary flow chart of step S1 in FIG.

[0041] Figure 4 The embodiment of the present disclosure corresponds to Figure 3 An exemplary flow chart of step S2 in FIG.

[0042] Figure 5 It is a line diagram of an embodiment of the present disclosure for reflecting the supply and demand balance principle of hydrogen filling and degassing of a storage tank and the matching relationship between the volume of a hydrogen storage unit and the gas transmission volume of a long-distance pipeline unit;

[0043] Figure 6 The embodiment of the present disclosure corresponds to Figure 1 An exemplary flow chart of step S3 in FIG.

[0044] Figure 7 The embodiment of the present disclosure corresponds to Figure 5 An exemplary flow chart of step S31 in FIG.

[0045] Figure 8 A schematic diagram comparing the fluctuation of hydrogen delivery volume at different time periods at the beginning of a long-distance pipeline unit in which no hydrogen storage spherical tank is originally provided in the embodiment of the present disclosure and 10 hydrogen storage spherical tanks are provided using the hydrogen storage and transportation method of the embodiment;

[0046] Fig. 9 is an exemplary structural schematic diagram of a hydrogen production system in an embodiment of the present disclosure;

[0047] Fig.10 A schematic block diagram of a computer device provided in an embodiment of the present disclosure;

[0048] Fig.11 A schematic diagram of a readable storage medium provided in an embodiment of the present disclosure.

[0049] In the drawings, the same reference numerals are used for the same components and the drawings are not drawn to scale.

[0050] In the figure: 1. Wind power generation unit; 2. Photovoltaic power generation unit; 3. Power storage unit; 4. Electrolysis hydrogen production unit; 5. Hydrogen storage unit; 6. Long-distance pipeline unit; 7. Control unit. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, and to fully understand and implement how the present disclosure applies technical means to solve technical problems and achieve the corresponding technical effects, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only embodiments of a part of the present disclosure, not all of the embodiments. The embodiments of the present disclosure and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present disclosure.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0053] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0054] In the wind-solar synergistic power generation and electrolysis hydrogen production mode, the current common method is to use high-pressure gaseous hydrogen storage tanks to fill and release the volatile hydrogen produced. When the amount of hydrogen produced by electrolysis is greater than the demand for hydrogen utilization, the excess hydrogen will enter the storage tank for buffering. When the amount of hydrogen produced is less than the demand for hydrogen, the previously buffered hydrogen can be released from the storage tank for replenishment. In the case of small wind and solar power generation capacity and hydrogen production scale, the volume demand for storage tanks is not too large, and the constraints on construction investment and safety risks are not very obvious. However, large-scale wind and solar bases and large-scale hydrogen production are the mainstream of my country's current and future hydrogen industry chain development. The demand for hydrogen production is presented in the form of tens of thousands of tons, hundreds of thousands of tons, and even millions of tons. The large-scale and unstable production of hydrogen has created a strong demand for hydrogen storage capacity. For example, the Sinopec Xinjiang Kuche Photovoltaic Power Generation Green Hydrogen Demonstration Project, which has been put into production, has a hydrogen storage capacity of 210,000 standard cubic meters against the background of an annual hydrogen production capacity of 20,000 tons. For this purpose, 10 2,000m 3 Water volume storage tank. The publicly reported 3.5 million kilowatt three-dimensional wind-solar hydrogen sand control and aviation fuel production integrated demonstration project in Ulan Buh, Alxa League, has a planned hydrogen storage capacity of 780,000 standard cubic meters. The centralized arrangement of a large number of hydrogen storage tanks in a large-scale hydrogen production base brings multiple challenges such as safety risks, land investment and equipment investment, which also indirectly restricts the commercial development of the wind-solar power generation hydrogen production industry chain.

[0055] The disclosed embodiment provides a hydrogen storage and transportation method for a hydrogen production system, which promotes the relatively stable pipeline transportation of hydrogen produced by wind power, photovoltaic power generation or wind-solar synergistic power generation with fluctuating production, and provides a "hydrogen production end storage tank + pipeline hydrogen storage" storage and transportation mode. This mode takes into account the hydrogen buffering capacity of the hydrogen production end storage tank and the hydrogen storage capacity of the long-distance hydrogen transmission pipeline itself. Through the supply and demand balance principle of hydrogen filling and hydrogen discharge in the storage tank, a matching relationship between the allowed hydrogen production end storage tank capacity and the orderly fluctuating hydrogen output entering the beginning of the pipeline is constructed to form a calculation implementation method for optimizing the configuration of the storage tank. Under the premise of occupying a small amount of storage tank capacity, this storage and transportation mode smoothes the random, disordered, large-scale, and high-frequency hydrogen production fluctuation output at the large-scale wind-solar power generation hydrogen production end, and adjusts it to a small-amplitude and low-frequency fluctuation output entering the inlet end of the long-distance hydrogen transmission pipeline. Based on the compressibility of hydrogen, it fully utilizes the hydrogen storage capacity of the long-distance hydrogen transmission pipeline, and finally becomes a stable output at the outlet end of the long-distance hydrogen transmission pipeline through pressure regulation control. This model reduces the safety risks of large-volume storage tank configuration at the hydrogen production end while reducing the overall project investment, thereby further reducing the terminal utilization cost of hydrogen and promoting the commercial development of the hydrogen energy production, storage, transportation and utilization industry chain.

[0056] Embodiment 1

[0057] Figure 1 The following is a flow chart of a hydrogen storage and transportation method of a hydrogen production system provided in an embodiment of the present disclosure. Figure 1 and Figure 2 As shown, a hydrogen storage and transportation method for a hydrogen production system, the hydrogen production system includes a hydrogen production unit, a hydrogen storage unit and a long-distance pipeline unit connected in sequence; the hydrogen storage and transportation method includes: obtaining attribute parameters of the hydrogen production unit and the hydrogen storage unit; the attribute parameters include the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year and the maximum hydrogen storage volume of the hydrogen storage unit; according to the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year and the maximum hydrogen storage volume of the hydrogen storage unit, constructing a judgment condition for judging whether the hydrogen production of the hydrogen production unit in any time period can be stably output from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production of the time period; using the judgment condition to divide the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year into several time periods, so that the hydrogen production fluctuation of each time period can be stably output at the average hydrogen production of the time period; and using the average hydrogen production of several time periods as the input amount of the hydrogen storage unit to the starting end of the long-distance pipeline unit in each time period for transportation. By taking into account the hydrogen buffering capacity of the hydrogen storage unit and the hydrogen storage capacity of the long-distance pipeline unit itself, the volume requirements of the hydrogen storage unit by the hydrogen production system are reduced. The inlet end of the long-distance pipeline unit can achieve a number of small-amplitude and low-frequency fluctuation outputs for a long period of time, thereby improving the stability of hydrogen transportation by long-distance pipelines and reducing the safety risks and engineering investment costs of large-scale hydrogen storage tank configuration of the hydrogen storage unit.

[0058] The hydrogen storage and transportation method of the hydrogen production system provided in this embodiment can be implemented in the form of software, hardware, firmware or any combination thereof, and loaded and executed by a processor in a device such as a mobile phone, tablet computer, laptop computer, desktop computer, network server, etc., so as to achieve stable hydrogen transportation, reduce the tank volume requirement of the hydrogen storage unit, and reduce configuration safety risks and engineering investment costs.

[0059] In this embodiment, the power generation unit includes any one or both of the wind power generation unit 1 and the photovoltaic power generation unit 2, depending on the actual resource conditions of the project. Figure 2 As shown, the power generation unit adopts the wind power generation unit 1 and the photovoltaic power generation unit 2 in a coordinated and complementary manner to generate electricity, realize the continuous output of low-fluctuation electricity with high utilization rate, and configure the power storage unit 3 to promote the further smooth output of electricity. The wind power generation unit 1, the photovoltaic power generation unit 2 and the power storage unit 3 cooperate with the electrolytic hydrogen production unit 4 to adapt the wide power capacity, so as to reduce the high-frequency and large-scale fluctuation output of the hydrogen produced by the hydrogen production unit, thereby firstly reducing the volume requirement of the hydrogen storage unit as much as possible from the source.

[0060] Reference below Figure 1 and Figure 2 As shown, the hydrogen storage and transportation method of the hydrogen production system provided by the embodiment of the present disclosure is described. The hydrogen storage and transportation method of the hydrogen production system includes steps S1 to S4, which are specifically as follows:

[0061] S1. Acquire attribute parameters of the hydrogen production unit and the hydrogen storage unit; the attribute parameters include the annual hydrogen production per unit time fluctuation of the hydrogen production unit and the maximum hydrogen storage capacity of the hydrogen storage unit.

[0062] In some embodiments, Figure 3 As shown, the property parameters of the hydrogen production unit and the hydrogen storage unit are obtained, including:

[0063] S11, obtaining the hydrogen fluctuation production per unit time of the hydrogen production unit throughout the year and the number of hydrogen storage spherical tanks and attribute parameters of the hydrogen storage spherical tanks of the hydrogen storage unit;

[0064] S12. Determine the maximum hydrogen storage capacity that can be provided by the hydrogen storage unit according to the number of hydrogen storage spherical tanks of the hydrogen storage unit and the property parameters of the hydrogen storage spherical tanks.

[0065] Furthermore, the hydrogen fluctuating production per unit time of the hydrogen production unit throughout the year is the hydrogen fluctuating production produced by electrolysis of hydrogen using the electric energy provided by the power generation unit, wherein the unit time is usually measured in hours;

[0066] The attribute parameters of the hydrogen storage unit 5 are determined based on constraints such as the manufacturing capacity of the hydrogen storage spherical tank, working conditions, construction investment, and safety risks, namely, the number of hydrogen storage spherical tanks and the volume of the hydrogen storage spherical tanks allowed in the hydrogen storage unit of the engineering project, thereby determining the maximum hydrogen storage capacity that the hydrogen storage unit of the engineering project can provide.

[0067] In this embodiment, after the hydrogen is produced by the hydrogen production unit 4, it is transported to the hydrogen storage unit 5 for buffering and storage, and then transported to the long-distance pipeline unit 6 through the hydrogen storage unit 5, so as to take into account the hydrogen buffering capacity of the hydrogen storage unit 5 and the hydrogen storage capacity of the long-distance pipeline unit 6 itself, and realize the "hydrogen production end storage tank + pipeline hydrogen storage" storage and transportation mode, which can reduce the property parameter requirements of the engineering project for the hydrogen storage unit, reduce the volume requirements of the hydrogen storage unit, and reduce investment costs and safety risks.

[0068] S2. Based on the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year and the maximum hydrogen storage capacity of the hydrogen storage unit, a judgment condition is constructed to determine whether the hydrogen production of the hydrogen production unit in any period of time can be stably output from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production of the period.

[0069] In some embodiments, step S2, such as Figure 4 As shown, including:

[0070] S21. Based on the supply and demand balance principle of hydrogen filling and degassing in storage tanks, a matching relationship between the allowed hydrogen storage volume and the hydrogen fluctuating output at the beginning of the long-distance pipeline unit is established;

[0071] S22, according to the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year and the matching relationship, determine the average hydrogen production matched by the hydrogen storage volume in any period of time; the average hydrogen production is used as the hydrogen fluctuation output at the beginning of the long-distance pipeline unit in any period of time;

[0072] S23, constructing the hydrogen storage volume that matches the average hydrogen production in any time period to be smaller than the maximum hydrogen storage capacity of the hydrogen storage unit as a judgment condition for stably outputting hydrogen from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production in the time period.

[0073] Furthermore, the supply and demand balance principle of hydrogen filling and degassing in the storage tank is that when the gas volume of the long-distance pipeline is less than the gas supply, the storage tank will store excess hydrogen to make up for the shortfall when the gas volume of the long-distance pipeline is greater than the gas supply; the time when the pipeline gas volume is lower than the average hourly gas supply is the period when the gas enters the storage tank, and vice versa, it is the period when the gas enters the long-distance pipeline from the storage tank. Therefore, the theoretical volume of the hydrogen storage unit is the difference between the highest and lowest values ​​of the working curve of the hydrogen storage unit. The supply and demand balance principle of hydrogen filling and degassing in the storage tank is as follows: Figure 5As shown, when the gas volume change curve is low, the hydrogen storage unit working curve increases, and when the gas volume change curve is high, the hydrogen storage unit working curve decreases, so that the relationship between the hydrogen storage unit working curve and the gas volume change curve of the long-distance pipeline unit can be determined. Figure 5 The matching relationship between the allowed hydrogen storage volume and the steady hydrogen delivery volume at the beginning of the long-distance pipeline unit during the time period shown.

[0074] Based on the above principle, in the embodiment of the present application, the average hydrogen production of any period in the hydrogen production fluctuation production of the hydrogen production unit throughout the year is used as the input amount of hydrogen transported by the hydrogen storage unit to the long-distance pipeline unit. Therefore, the matching relationship between the hydrogen production unit time fluctuation production, the hydrogen storage volume and the hydrogen fluctuation amount input to the starting end of the long-distance pipeline unit throughout the year can be used to determine the hydrogen storage volume matched with the average hydrogen production in any period, and then compare the hydrogen storage volume matched with the average hydrogen production with the actual maximum hydrogen storage volume of the hydrogen storage unit of the project to determine whether the average hydrogen production in the current period can be stably transported. In this way, the judgment condition is constructed, which is conducive to the next step of dividing the hydrogen production of the hydrogen production unit throughout the year into several time periods, thereby ensuring that the long-distance pipeline unit has a small amplitude and low-frequency fluctuation output when transporting hydrogen, which is conducive to the stable output of hydrogen.

[0075] S3. Divide the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year into several time periods by using the judgment conditions, so that the hydrogen production fluctuation in each time period can be stably output according to the average hydrogen production in the time period.

[0076] In some embodiments, step S3, such as Figure 6 As shown, including:

[0077] S31. Accumulate the hydrogen production of the hydrogen production unit throughout the year starting from the first unit time, and simultaneously calculate the average hydrogen production in the accumulation time period until the average hydrogen production in the accumulation time period does not meet the judgment condition.

[0078] In some embodiments, step S31, such as Figure 7 As shown, including:

[0079] S311, cumulatively calculating the hydrogen production of the hydrogen production unit throughout the year starting from the first unit time, and determining the sum of the hydrogen fluctuation production in the cumulative time period;

[0080] S312, calculating the average hydrogen production of the period according to the sum of the hydrogen fluctuation production in the accumulated time period;

[0081] S313, judging whether the average hydrogen production during the period meets the judgment condition;

[0082] If it is in compliance, the cumulative calculation of hydrogen fluctuation production will continue, and the cumulative time period and the average hydrogen production in the time period will be updated;

[0083] If it does not meet the requirements, the accumulation calculation will be stopped.

[0084] Among them, the process of judging whether the average hydrogen production of the time period meets the judgment conditions is as follows: the average hydrogen production is input into the judgment conditions to determine the hydrogen storage volume corresponding to the average hydrogen production, and then the maximum volume requirement value of the hydrogen storage unit of the project in the judgment conditions is compared with the hydrogen storage volume corresponding to the average hydrogen production. When the maximum volume requirement value of the hydrogen storage unit of the project is greater than or equal to the hydrogen storage volume corresponding to the average hydrogen production, it is determined that the average hydrogen production of the time period meets the judgment conditions, that is, the average hydrogen production of the time period can be stably output; if it is less than, it is determined to be not in compliance with the judgment conditions, and the cumulative calculation is stopped. In the above manner, the fluctuating hydrogen production originally produced by the hydrogen production unit is combined with the buffering and storage function of the hydrogen storage unit, and the average hydrogen production of the time period is used as the delivery volume of the hydrogen storage unit to the long-distance pipeline unit, so that the input of the pipeline head end of the long-distance pipeline unit is relatively stable, the volume requirement of the hydrogen storage unit is reduced, and the construction investment and safety risks are reduced.

[0085] S32, picking up the time period that meets the judgment condition before the cumulative calculation stops, and the hydrogen fluctuation production and average hydrogen production per unit time in the time period;

[0086] S33, starting from picking up the next unit time of the time period that meets the judgment conditions, the above steps are repeated until all the hydrogen unit time fluctuation production of the hydrogen production unit throughout the year are traversed to obtain the hydrogen fluctuation production of several time periods.

[0087] Through step S3, all the hydrogen unit time fluctuation production of the hydrogen production unit throughout the year is traversed to obtain the hydrogen fluctuation production of several time periods, so that the original hydrogen fluctuation production of the hydrogen production unit can be divided into the average fluctuation production in multiple time periods, so that it can be divided into several long-term small-amplitude fluctuation outputs to the pipeline input end of the long-distance pipeline unit, and stable output is performed within the divided time periods, and small-amplitude fluctuations are formed when entering the next time period, which is conducive to utilizing the long-distance pipeline unit to stably output and store hydrogen, improve the stability of hydrogen transmission, and reduce the volume requirement of the hydrogen storage unit.

[0088] S4. The average hydrogen production in several time periods is used as the input amount of the hydrogen storage unit to the starting end of the long-distance pipeline unit in each time period for transportation.

[0089] In some embodiments, the number of hydrogen storage configurations of the hydrogen storage unit in this embodiment is ten, and the hydrogen fluctuating output produced by the hydrogen production unit for 140 hours is taken as an example. Figure 8As shown, the solid line portion is the fluctuation change line of the hydrogen production input to the starting end of the long-distance pipeline unit when the hydrogen production unit is directly connected to the long-distance pipeline unit for transportation, or the solid line portion is represented as the hydrogen production unit connected to the long-distance pipeline unit through the hydrogen storage unit, and the hydrogen production fluctuation change line output from the hydrogen production unit to the starting end of the hydrogen storage unit; and the dotted line portion in the figure is the method provided by the embodiment of the present disclosure, under the maximum hydrogen storage volume allowed by configuring ten hydrogen storage tanks, the average hydrogen production in multiple time periods is divided as the input amount input by the hydrogen storage unit to the starting end of the long-distance pipeline unit in each time period for transportation. It can be clearly seen that when the hydrogen storage unit is configured with ten storage tanks and the storage and transportation of hydrogen by the hydrogen storage unit is controlled by the method provided in this embodiment, the hydrogen input amount of the long-distance pipeline unit remains stable in the divided time period, forms a small fluctuation when entering the next time period, and then maintains a stable output in the next time period, which is conducive to the stable output and storage of hydrogen by the long-distance pipeline unit, improves the stability of hydrogen transportation, and reduces the volume requirement of the hydrogen storage unit.

[0090] In some embodiments, the hydrogen storage and transportation method further includes: obtaining attribute parameters of a long-distance pipeline unit;

[0091] According to the property parameters of the long-distance pipeline unit and the compression performance of hydrogen, the hydrogen transmission pressure in the long-distance pipeline unit is determined to ensure stable output at the outlet end of the long-distance pipeline unit.

[0092] Based on the compressibility of hydrogen, the hydrogen storage capacity of the long-distance hydrogen pipeline is fully utilized to control the pressure of the long-distance pipeline unit, which eventually turns into a stable output at the outlet end of the long-distance hydrogen pipeline.

[0093] The embodiment of the present disclosure provides a hydrogen storage and transportation method for a hydrogen production system. By using a hydrogen storage unit as the starting point for transportation to a long-distance pipeline unit, hydrogen can be stored in combination with the hydrogen storage unit and the long-distance pipeline, taking into account the hydrogen buffering capacity of the hydrogen storage unit and the hydrogen storage capacity of the long-distance pipeline unit itself, thereby reducing the volume requirements of the hydrogen production system for the hydrogen storage unit and reducing the project investment cost; by dividing the hydrogen fluctuation production of the hydrogen production unit throughout the year into several time periods that meet the judgment conditions, the hydrogen can be delivered to the inlet of the long-distance pipeline unit with a small amplitude and low frequency fluctuation output, so that the hydrogen produced by the hydrogen production unit with fluctuating production can be smoothly transported in the long-distance pipeline unit, thereby improving the stability of hydrogen transportation by the long-distance pipeline, and then based on the compressibility of hydrogen, the outlet of the long-distance pipeline is controlled by pressure regulation to achieve stable output, thereby improving the stability of hydrogen use at the outlet of the long-distance pipeline. Through the above scheme, stable hydrogen transportation is achieved, and the required volume of the storage tank of the hydrogen storage unit is reduced, reducing the configuration safety risk and project investment cost.

[0094] Embodiment 2

[0095] Based on the above embodiments, this embodiment provides an application example.

[0096] This embodiment provides a hydrogen production system, such as Fig. 9 As shown, it includes: a hydrogen production unit 4, a hydrogen storage unit 5, a long-distance pipeline unit 6 and a control unit 7; the hydrogen production unit 4, the hydrogen storage unit 5 and the long-distance pipeline unit 6 are connected in sequence, and are connected to the control unit 7; the control unit 7 is used to execute the steps of the method described in the above embodiment.

[0097] Further, such as Figure 2 As shown, the hydrogen production system also includes a power generation unit connected to the hydrogen production unit 4 and a power storage unit 3 connected to the power generation unit; the power generation unit includes any one or both of a wind power generation unit 1 and a photovoltaic power generation unit 2; the wind power generation unit 1, the photovoltaic power generation unit 2 and the power storage unit 3 cooperate with each other to adapt to the wide power capacity of the hydrogen production unit 4. Specifically, as Figure 2 As shown, the power generation unit adopts the wind power generation unit 1 and the photovoltaic power generation unit 2 in a coordinated and complementary manner to generate electricity, realize the continuous output of low-fluctuation electricity with high utilization rate, and configure the power storage unit 3 to promote the further smooth output of electricity. The wind power generation unit 1, the photovoltaic power generation unit 2 and the power storage unit 3 cooperate with the electrolytic hydrogen production unit 4 to adapt the wide power capacity, so as to reduce the high-frequency and large-scale fluctuation output of the hydrogen produced by the hydrogen production unit 4, thereby firstly reducing the volume requirement of the hydrogen storage unit 5 as much as possible from the source.

[0098] In this embodiment, the control unit can be implemented in the form of software, hardware, firmware or any combination thereof, and loaded and executed by a processor in a device such as a mobile phone, a tablet computer, a laptop computer, a desktop computer, a network server, etc. In this embodiment, the control unit is applied to the hydrogen production system to control its storage and transportation process, thereby achieving stable hydrogen transportation, reducing the storage tank volume requirement of the hydrogen storage unit, and reducing the configuration safety risk and engineering investment cost.

[0099] Embodiment 3

[0100] Based on the above embodiments, this embodiment provides a computer device, such as Fig.10 As shown, it includes a memory, a processor and a computer program stored in the memory, and the processor executes the computer program to implement the steps of the method described in the above embodiment.

[0101] In some implementations of this embodiment, a computer readable storage medium is provided, such as Fig.11 As shown, a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the method described in the above embodiment are implemented.

[0102] In some implementations of this embodiment, a computer program product is provided, including a computer program / instructions, and when the computer program is executed by a processor, the steps of the method described in the above embodiment are implemented.

[0103] The processor may include, but is not limited to, one or more processors or microprocessors. Each processor may be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components to execute the method in the above embodiments.

[0104] The computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the computer-readable storage medium may include but is not limited to, for example, random access memory (RAM), read-only memory (ROM), flash memory, EPROM memory, EEPROM memory, registers, computer storage media (e.g., hard disk, floppy disk, solid-state drive, removable disk, CD-ROM, DVD-ROM, Blu-ray disc, etc.).

[0105] The computer-readable storage medium may also store at least one computer executable program / instruction, which may be, for example, a computer-readable instruction. The computer-readable storage medium includes, but is not limited to, for example, a volatile memory and / or a non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The computer-readable storage medium may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. For example, a non-transitory computer-readable storage medium may be connected to a computing device such as a computer, and then, when the computing device runs the computer-readable instructions stored on the computer-readable storage medium, the various methods described above may be performed.

[0106] In addition, the computer device may also include (but not limited to) a data bus, an input / output (I / O) bus, a display, and input / output devices (eg, keyboard, mouse, speaker, etc.), etc.

[0107] The processor may communicate with external devices via an I / O bus via a wired or wireless network.

[0108] In one embodiment, the at least one computer executable instruction may also be compiled into or constitute a software product / computer program product, wherein one or more computer executable instructions are executed by a processor to perform the various functions and / or method steps in the embodiments described in the present technology.

[0109] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0110] It should be noted that in the present disclosure, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element limited by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0111] Although the embodiments disclosed in the present disclosure are as above, the above contents are only embodiments adopted for facilitating the understanding of the present disclosure and are not intended to limit the present disclosure. Any technician in the technical field to which the present disclosure belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present disclosure, but the scope of patent protection of the present disclosure shall still be subject to the scope defined in the attached claims.

Claims

1. A hydrogen storage and transportation method for a hydrogen production system, characterized in that: The hydrogen production system comprises a hydrogen production unit, a hydrogen storage unit and a long-distance pipeline unit connected in sequence; the hydrogen storage and transportation method comprises: Acquire attribute parameters of the hydrogen production unit and the hydrogen storage unit; the attribute parameters include the annual hydrogen production per unit time fluctuation of the hydrogen production unit and the maximum hydrogen storage capacity of the hydrogen storage unit; According to the hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year and the maximum hydrogen storage capacity of the hydrogen storage unit, a judgment condition is constructed to determine whether the hydrogen production of the hydrogen production unit in any period of time can be stably output from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production of the period; The hydrogen production per unit time fluctuation of the hydrogen production unit throughout the year is divided into several time periods by using the judgment conditions, so that the hydrogen production fluctuation in each time period can be stably output according to the average hydrogen production in the time period; The average hydrogen production in several time periods is used as the input amount of the hydrogen storage unit to the beginning of the long-distance pipeline unit in each time period for transportation.

2. A hydrogen storage and transportation method for a hydrogen production system according to claim 1, characterized in that: The determination condition for determining whether the hydrogen production of the hydrogen production unit in any period of time can be stably output from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production in the period of time according to the hydrogen production unit's annual unit time fluctuation production and the maximum hydrogen storage capacity of the hydrogen storage unit comprises: Based on the supply and demand balance principle of hydrogen filling and degassing in storage tanks, a matching relationship between the allowed hydrogen storage volume and the hydrogen fluctuating output at the beginning of the long-distance pipeline unit is established; According to the annual hydrogen unit time fluctuation production of the hydrogen production unit and the matching relationship, the average hydrogen production matched by the hydrogen storage volume in any period is determined; the average hydrogen production is used as the hydrogen output input to the beginning of the long-distance pipeline unit in any period; The hydrogen storage volume matching the average hydrogen production in any period is smaller than the maximum hydrogen storage capacity of the hydrogen storage unit as a determination condition for stably outputting hydrogen from the hydrogen storage unit to the long-distance pipeline unit at the average hydrogen production in the period.

3. The hydrogen storage and transportation method of a hydrogen production system according to claim 1, characterized in that: The determination condition is used to divide the annual hydrogen unit time fluctuation production of the hydrogen production unit into several time periods, so that the hydrogen fluctuation production in each time period can be stably output according to the average hydrogen production in the time period, including: The hydrogen production of the hydrogen production unit throughout the year is accumulated starting from the first unit time, and the average hydrogen production in the accumulated time period is simultaneously calculated until the average hydrogen production in the accumulated time period does not meet the judgment condition; Pick up the time period that meets the judgment conditions before the cumulative calculation stops, as well as the hydrogen fluctuation production and average hydrogen production per unit time in the time period; Starting from picking up the next unit time of the time period that meets the judgment conditions, the above steps are repeated until all the hydrogen unit time fluctuation production of the hydrogen production unit throughout the year are traversed to obtain the hydrogen fluctuation production of several time periods.

4. The hydrogen storage and transportation method of a hydrogen production system according to claim 3, characterized in that: The hydrogen production of the hydrogen production unit throughout the year is accumulated starting from the first unit time, and the average hydrogen production in the accumulated time period is simultaneously calculated until the average hydrogen production in the accumulated time period does not meet the judgment condition, including: The hydrogen production of the hydrogen production unit throughout the year is accumulated starting from the first unit time to determine the sum of the hydrogen fluctuation production in the accumulation time period; Calculate the average hydrogen production in this period according to the sum of the hydrogen fluctuation production in the accumulated time period; Determine whether the average hydrogen production during this period meets the determination conditions; If it is in compliance, the cumulative calculation of hydrogen fluctuation production will continue, and the cumulative time period and the average hydrogen production in the time period will be updated; If it does not meet the requirements, the accumulation calculation will be stopped.

5. The hydrogen storage and transportation method of a hydrogen production system according to claim 1, characterized in that: The obtaining of the property parameters of the hydrogen production unit and the hydrogen storage unit includes: Obtain the hydrogen fluctuation production per unit time of the hydrogen production unit throughout the year and the number and attribute parameters of the hydrogen storage spherical tanks of the hydrogen storage unit; According to the number of hydrogen storage spherical tanks of the hydrogen storage unit and the property parameters of the hydrogen storage spherical tanks, the maximum hydrogen storage capacity that the hydrogen storage unit can provide is determined.

6. The hydrogen storage and transportation method of a hydrogen production system according to claim 1, characterized in that: Also includes: Get the attribute parameters of the long-distance pipeline unit; According to the property parameters of the long-distance pipeline unit and the compression performance of hydrogen, the hydrogen transmission pressure in the long-distance pipeline unit is determined to ensure stable output at the outlet end of the long-distance pipeline unit.

7. A hydrogen production system, characterized in that: It comprises a hydrogen production unit, a hydrogen storage unit, a long-distance pipeline unit and a control unit; the hydrogen production unit, the hydrogen storage unit and the long-distance pipeline unit are connected in sequence and are all connected to the control unit; the control unit is used to execute the hydrogen storage and transportation method according to any one of claims 1-6.

8. A hydrogen production system according to claim 7, characterized in that: It also includes a power generation unit connected to the hydrogen production unit and a power storage unit connected to the power generation unit; the power generation unit includes any one or both of a wind power generation unit and a photovoltaic power generation unit; the power storage unit is adapted to the wide power capacity of the hydrogen production unit.

9. A computer device comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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