Capacity configuration method and device for ammonia production system

Abstract

This disclosure relates to a capacity configuration method and apparatus for an ammonia production system. The ammonia production system includes a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, a synthetic ammonia unit, and an ammonia storage unit. The method includes: determining the purchase and sales data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit; determining the objective function of the capacity configuration model of the ammonia production system based on the cost parameters and purchase and sales data of the ammonia production system within the predetermined period; determining the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit based on the objective function; and configuring their capacities according to the capacity configuration parameters. By adopting this disclosure, the adjustment capabilities of each link in the new energy ammonia production system can be utilized to optimize the new energy ammonia production configuration mode, achieving high economic efficiency and reliability in the operation of the new energy ammonia production system.

Description

Technical Field

[0001] This disclosure relates to the field of new energy ammonia production technology, and more specifically, to a capacity configuration method and apparatus for an ammonia production system. Background Technology

[0002] With the advancement of the dual-carbon development strategy, the proportion of new energy installed capacity is gradually increasing, but the constraints on absorption capacity are becoming increasingly apparent. Green hydrogen is considered the second absorption path for new energy development; however, due to the limitations of hydrogen energy development and storage and transportation issues, green hydrogen development is unlikely to achieve rapid breakthroughs in the short term. As an important part of the hydrogen industry chain, synthetic ammonia production using green electricity has become a crucial path for integrating new energy with industry. However, due to the volatility and intermittency of new energy power generation, a certain level of regulation capacity needs to be configured in the system. Currently, grid-connected hydrogen production models are often considered, but the overall project profitability is insufficient, they are significantly limited by the power grid, and they are not suitable for future new power system scenarios. In terms of configuration, current green hydrogen or green ammonia models primarily consider redundant configurations in energy storage. Summary of the Invention

[0003] To address the aforementioned issues, this disclosure proposes a capacity configuration method and apparatus for an ammonia production system, a computing system, and a computer-readable storage medium.

[0004] According to one aspect of this disclosure, a capacity configuration method for an ammonia production system is provided. The ammonia production system includes a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, a synthetic ammonia unit, and an ammonia storage unit. The capacity configuration method includes: determining the purchase and sales data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit; determining the objective function of the capacity configuration model of the ammonia production system based on the cost parameters and purchase and sales data of the ammonia production system within the predetermined period; determining the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit based on the objective function; and configuring the capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit according to the capacity configuration parameters.

[0005] Optionally, the cost parameters include the initial investment cost, operation and maintenance cost, and residual value of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit.

[0006] Optionally, the purchase and sales data includes one or more of the following: electricity sales revenue, hydrogen sales revenue, ammonia sales revenue, nitrogen sales revenue, electricity purchase cost, hydrogen purchase cost, nitrogen purchase cost, ammonia purchase cost, system regulation costs due to surplus electricity being fed into the grid, and system backup capacity costs due to electricity purchase.

[0007] Optionally, the step of determining the objective function of the capacity configuration model of the ammonia production system based on the cost parameters and purchase and sales data of the ammonia production system within a predetermined period includes: determining the operating revenue of the ammonia production system based on the purchase and sales data; and determining the objective function that maximizes the benefits of the ammonia production system based on the operating revenue, initial investment cost, operation and maintenance cost, and residual value of the ammonia production system.

[0008] Optionally, the step of determining the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit based on the objective function includes: determining the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit based on the maximum benefit of the ammonia production system; and determining the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit based on the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, as well as the investment cost and / or operation and maintenance cost per unit capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit.

[0009] Optionally, the step of determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit includes: in response to the electricity generated by the new energy power generation unit within the predetermined period being lower than the lower limit of the electricity consumption of the hydrogen production unit, setting the electricity consumption for hydrogen production within the predetermined period to zero, and determining the electricity sales revenue based on the electricity generated by the new energy power generation unit within the predetermined period; in response to the electricity generated by the new energy power generation unit within the predetermined period being higher than the lower limit of the electricity consumption of the hydrogen production unit but lower than the upper limit of the electricity consumption of the hydrogen production unit, setting the electricity consumption for hydrogen production within the predetermined period to be equal to the electricity generated by the new energy power generation unit within the predetermined period, and determining the electricity sales revenue to be zero; in response to the electricity generated by the new energy power generation unit within the predetermined period being higher than the upper limit of the electricity consumption of the hydrogen production unit, setting the electricity consumption for hydrogen production within the predetermined period to be equal to the upper limit of the electricity consumption of the hydrogen production unit, and determining the electricity sales revenue based on the difference between the electricity generated by the new energy power generation unit and the upper limit of the electricity consumption of the hydrogen production unit.

[0010] Optionally, the step of determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit includes: determining the hydrogen demand within a predetermined period based on the demand for synthetic ammonia; determining the hydrogen production volume within a predetermined period based on the hydrogen production electricity consumption; in response to the hydrogen production volume being greater than the hydrogen demand within a predetermined period, setting the hydrogen consumption volume within a predetermined period to be equal to the hydrogen demand within a predetermined period, setting the hydrogen storage increment within a predetermined period to be equal to the difference between the hydrogen production volume and the hydrogen demand within a predetermined period, and in response to the total hydrogen storage exceeding the hydrogen storage limit, determining the hydrogen sales revenue within a predetermined period based on the difference between the total hydrogen storage and the hydrogen storage limit; in response to the hydrogen production volume being less than the hydrogen demand within a predetermined period and the current hydrogen storage being less than or equal to the difference between the hydrogen production volume and the hydrogen demand within a predetermined period, determining the electricity purchase cost and / or hydrogen purchase cost within a predetermined period based on the difference between the difference and the current hydrogen storage.

[0011] Optionally, the step of determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit within a predetermined period includes: determining the nitrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; in response to the nitrogen production within a predetermined period being greater than the nitrogen demand within a predetermined period, setting the nitrogen consumption within a predetermined period to be equal to the nitrogen demand within a predetermined period, setting the nitrogen storage increment within a predetermined period to be equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, and in response to the total nitrogen storage exceeding the nitrogen storage limit, determining the nitrogen sales revenue within a predetermined period based on the difference between the total nitrogen storage and the nitrogen storage limit; in response to the nitrogen production within a predetermined period being less than the nitrogen demand within a predetermined period and the current nitrogen storage within a predetermined period being less than or equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, determining the electricity purchase cost and / or nitrogen purchase cost within a predetermined period based on the difference between the difference and the current nitrogen storage within a predetermined period.

[0012] Optionally, the step of determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit within a predetermined period includes: in response to the amount of synthetic ammonia within the predetermined period being greater than the demand for ammonia within the predetermined period, setting the amount of ammonia used within the predetermined period to be equal to the demand for ammonia within the predetermined period, setting the increment of ammonia storage within the predetermined period to be equal to the difference between the amount of synthetic ammonia within the predetermined period and the demand for ammonia within the predetermined period, and in response to the total ammonia storage exceeding the upper limit of ammonia storage, determining the ammonia sales revenue within the predetermined period based on the difference between the total ammonia storage and the upper limit of ammonia storage; in response to the amount of synthetic ammonia within the predetermined period being less than the demand for ammonia within the predetermined period and the current ammonia storage within the predetermined period being less than or equal to the difference between the amount of synthetic ammonia within the predetermined period and the demand for ammonia within the predetermined period, determining the ammonia purchase cost within the predetermined period based on the difference between the difference and the current ammonia storage within the predetermined period.

[0013] According to another aspect of this disclosure, a capacity configuration device for an ammonia production system is provided. The ammonia production system includes a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, a synthetic ammonia unit, and an ammonia storage unit. The capacity configuration device includes: a purchase and sales data determination unit, which determines the purchase and sales data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit; an objective function determination unit, which determines the objective function of the capacity configuration model of the ammonia production system based on the cost parameters of the ammonia production system within the predetermined period and the purchase and sales data; and a capacity configuration unit, which determines the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit based on the objective function, and configures the capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit according to the capacity configuration parameters.

[0014] Optionally, the cost parameters include the initial investment cost, operation and maintenance cost, and residual value of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit.

[0015] Optionally, the purchase and sales data includes one or more of the following: electricity sales revenue, hydrogen sales revenue, ammonia sales revenue, nitrogen sales revenue, electricity purchase cost, hydrogen purchase cost, nitrogen purchase cost, ammonia purchase cost, system regulation costs due to surplus electricity being fed into the grid, and system backup capacity costs due to electricity purchase.

[0016] Optionally, the objective function determination unit performs the following operations: based on the purchase and sales data, determines the operating revenue of the ammonia production system; based on the operating revenue, initial investment cost, operation and maintenance cost, and residual value of the ammonia production system, determines the objective function that maximizes the benefits of the ammonia production system.

[0017] Optionally, the capacity configuration unit performs the following operations: determining the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit based on the maximum benefit of the ammonia production system; and determining the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit based on the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, as well as the investment cost and / or operation and maintenance cost per unit capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit.

[0018] Optionally, the purchase and sale data determination unit performs the following operations: In response to the fact that the electricity generated by the new energy power generation unit within a predetermined period is lower than the lower limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to zero, and the electricity sales revenue is determined based on the electricity generated by the new energy power generation unit within the predetermined period; In response to the fact that the electricity generated by the new energy power generation unit within the predetermined period is higher than the lower limit of the electricity consumption of the hydrogen production unit but lower than the upper limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to be equal to the electricity generated by the new energy power generation unit within the predetermined period, and the electricity sales revenue is determined to be zero; In response to the fact that the electricity generated by the new energy power generation unit within the predetermined period is higher than the upper limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to be equal to the upper limit of the electricity consumption of the hydrogen production unit, and the electricity sales revenue is determined based on the difference between the electricity generated by the new energy power generation unit and the upper limit of the electricity consumption of the hydrogen production unit.

[0019] Optionally, the purchase and sale data determination unit performs the following operations: determining the hydrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; determining the hydrogen production within a predetermined period based on the electricity consumption for hydrogen production; in response to the hydrogen production within a predetermined period being greater than the hydrogen demand within a predetermined period, setting the hydrogen consumption within a predetermined period to be equal to the hydrogen demand within a predetermined period, setting the hydrogen storage increment within a predetermined period to be equal to the difference between the hydrogen production within a predetermined period and the hydrogen demand within a predetermined period, and in response to the total hydrogen storage exceeding the hydrogen storage limit, determining the hydrogen sales revenue within a predetermined period based on the difference between the total hydrogen storage and the hydrogen storage limit; in response to the hydrogen production within a predetermined period being less than the hydrogen demand within a predetermined period and the current hydrogen storage within a predetermined period being less than or equal to the difference between the hydrogen production within a predetermined period and the hydrogen demand within a predetermined period, determining the electricity purchase cost and / or hydrogen purchase cost within a predetermined period based on the difference between the difference and the current hydrogen storage within a predetermined period.

[0020] Optionally, the purchase and sale data determination unit performs the following operations: determining the nitrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; in response to the nitrogen production within a predetermined period being greater than the nitrogen demand within a predetermined period, setting the nitrogen consumption within a predetermined period to be equal to the nitrogen demand within a predetermined period, setting the nitrogen storage increment within a predetermined period to be equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, and in response to the total nitrogen storage exceeding the nitrogen storage limit, determining the nitrogen sales revenue within a predetermined period based on the difference between the total nitrogen storage and the nitrogen storage limit; in response to the nitrogen production within a predetermined period being less than the nitrogen demand within a predetermined period and the current nitrogen storage within a predetermined period being less than or equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, determining the electricity purchase cost and / or nitrogen purchase cost within a predetermined period based on the difference between the difference and the current nitrogen storage within a predetermined period.

[0021] Optionally, the purchase and sales data determination unit performs the following operations: in response to the amount of synthetic ammonia in a predetermined period being greater than the ammonia demand in a predetermined period, the amount of ammonia used in the predetermined period is set to be equal to the ammonia demand in the predetermined period, the increment of ammonia storage in the predetermined period is set to be equal to the difference between the amount of synthetic ammonia in the predetermined period and the ammonia demand in the predetermined period, and in response to the total ammonia storage exceeding the ammonia storage limit, the ammonia sales revenue in the predetermined period is determined based on the difference between the total ammonia storage and the ammonia storage limit; in response to the amount of synthetic ammonia in the predetermined period being less than the ammonia demand in the predetermined period and the current ammonia storage in the predetermined period being less than or equal to the difference between the amount of synthetic ammonia in the predetermined period and the ammonia demand in the predetermined period, the ammonia purchase cost in the predetermined period is determined based on the difference between the difference and the current ammonia storage in the predetermined period.

[0022] According to another aspect of this disclosure, a computing system is provided that includes at least one computing device and at least one storage device for storing instructions, wherein the instructions, when executed by the at least one computing device, cause the at least one computing device to perform the capacity configuration method for an ammonia production system as described above.

[0023] According to another aspect of this disclosure, a computer-readable storage medium for storing instructions is provided, wherein when the instructions are executed by at least one computing device, the at least one computing device causes the at least one computing device to perform the capacity configuration method for an ammonia production system as described above.

[0024] By adopting this disclosure, the adjustment capabilities of each link in the new energy ammonia production system can be utilized to optimize the configuration mode of the new energy ammonia production system, thereby achieving high economy and reliability in the operation of the new energy ammonia production system. Attached Figure Description

[0025] The above and / or other objects and advantages of this disclosure will become clearer from the following description of embodiments in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram showing a new energy ammonia production system;

[0027] Figure 2 This is a flowchart illustrating a capacity configuration method for an ammonia production system according to an exemplary embodiment of the present disclosure;

[0028] Figures 3A to 3D This is a flowchart illustrating an energy management strategy according to an exemplary embodiment of the present disclosure;

[0029] Figure 4 This is a flowchart illustrating a capacity configuration strategy according to an embodiment of the present disclosure;

[0030] Figure 5 A block diagram of a capacity configuration apparatus for an ammonia production system according to an exemplary embodiment of the present disclosure is shown.

[0031] Figure 6 This is a block diagram illustrating a computing system including at least one computing device and at least one storage device of storage instructions according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0032] The following description, in conjunction with the accompanying drawings, provides specific embodiments to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, upon understanding this disclosure, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but may be altered as will become clear upon understanding this disclosure, except for operations that must occur in a specific order. Furthermore, for clarity and conciseness, descriptions of features known in the art may be omitted.

[0033] Figure 1 This is a schematic diagram showing a new energy ammonia production system.

[0034] like Figure 1 As shown, a new energy ammonia production system may include a new energy power generation system, a water electrolysis hydrogen production system, a hydrogen storage system, a nitrogen production system, a nitrogen storage system, and a synthetic ammonia system. Furthermore, depending on the needs, the new energy ammonia production system may also include a waste heat recovery power generation system and an ammonia purge gas hydrogen recovery device. The new energy power generation system may include, for example, at least one of wind power generation equipment, photovoltaic power generation equipment, and wind-solar hybrid power generation equipment, but is not limited to these. For example, depending on the location of the new energy ammonia production system, the new energy power generation system may also include other types of power generation equipment (e.g., hydropower generation equipment).

[0035] The general process of the capacity configuration method for new energy ammonia production according to this disclosure may include: obtaining the range of synthetic ammonia required for the whole year (e.g., including the upper limit curve and the lower limit curve of synthetic ammonia) and the historical curve of synthetic ammonia price, and formulating a synthetic ammonia demand plan curve; determining the hydrogen demand curve and nitrogen demand curve based on the synthetic ammonia demand plan curve; obtaining data information from each component system of the new energy ammonia production system, and constructing an energy management strategy under grid connection conditions based on the obtained information data; calculating the comprehensive operating revenue based on the cost parameters and operating costs in the information data, as well as the maximum grid connection ratio boundary and hydrogen sales ratio boundary, combined with the energy management strategy, constructing a capacity configuration optimization model with maximizing system benefits as the objective function, conducting operational simulations based on the capacity configuration scheme, and determining the optimal configuration capacity of each component unit. The range of synthetic ammonia required for the whole year refers to the annual ammonia supply volume required by the ammonia supply agreement signed with the synthetic ammonia application end, and the annual capacity constraint condition meets S. hca ≥HY hca , among which, S hca For the total annual sales volume of synthetic ammonia, HY hca This represents the minimum demand for synthetic ammonia. The synthetic ammonia demand plan can be a daily ammonia supply curve compiled based on the annual ammonia supply and the synthetic ammonia price curve. The hydrogen demand curve can be a daily hydrogen supply demand curve determined based on the daily ammonia supply demand curve, and the ammonia-hydrogen correspondence satisfies P... qxq (t)=P hcaxq (t) / B, where P qxq (t) represents the hydrogen supply demand, P hcaxq (t) represents the ammonia synthesis demand, and B is the ammonia-hydrogen conversion coefficient. The daily nitrogen supply demand curve can be determined based on the daily ammonia supply demand curve, and the ammonia-nitrogen correspondence satisfies P. dxq (t)=P hcaxq (t) / C, where P dxq (t) represents the nitrogen demand, P hcaxq (t) represents the ammonia synthesis demand, and C represents the ammonia-nitrogen conversion coefficient.

[0036] Data information for each component system may include, for example, wind resource data, the cost and operating cost of new energy power plants, the adjustment range, cost and operating cost of water electrolysis hydrogen production systems, the adjustment range, cost and operating cost of hydrogen storage systems, the adjustment range, cost and operating cost of nitrogen production systems, the adjustment range, cost and operating cost of nitrogen storage systems, the adjustment range, cost and operating cost of ammonia synthesis systems, the adjustment range, cost and operating cost of ammonia storage systems, and the maximum acceptable grid-connected electricity ratio for the region. The adjustment range of each system can be a constraint condition used in capacity configuration model calculations, for example: the adjustment range of the water electrolysis hydrogen production system satisfies P... zq.min ≤P zq (t)≤P zq.max , where Pzq.min P is the lower limit of regulation for the water electrolysis hydrogen production system. zq.max The upper limit of regulation for the water electrolysis hydrogen production system; the regulation range of the hydrogen storage system meets P. cq.min ≤P cq (t)≤P cq.max , where P cq.min P is the lower limit of regulation for hydrogen storage systems. cq.max The regulation upper limit of the hydrogen storage system; the regulation range of the nitrogen generation system satisfies P. zd.min ≤P zd (t)≤P zd.max , where P zd.min As the lower limit of adjustment for the nitrogen generation system, P zd.max The upper limit of the nitrogen generation system's regulation; the regulation range of the nitrogen storage system satisfies P. cd.min ≤P cd (t)≤P cd.max , where P cd.min As the lower limit of regulation for the nitrogen storage system, P cd.max The upper limit of regulation for the nitrogen storage system; the regulation range of the ammonia synthesis system satisfies P. hca.min ≤P hca (t)≤P hca.max , where P hca.min P is the lower limit of regulation for the ammonia synthesis system. hca.max The upper limit of regulation for the ammonia synthesis system; the regulation range of the ammonia storage system satisfies P. ca.min ≤P ca (t)≤P ca.max , where P ca.min P is the lower limit of regulation for the ammonia storage system. ca.max The upper limit of regulation for the ammonia storage system; the maximum on-grid ratio boundary P swbj To meet the government's requirement for the maximum on-grid electricity generation of new energy power plants, P swdlz P% of total internet power consumption fdlz The ratio satisfies P swbj =P swdlz / P fdlz The maximum hydrogen sales volume is P, which is determined based on the surrounding hydrogen demand. sqz The electro-hydrogen conversion efficiency is the efficiency of converting electrical energy into hydrogen energy, and the conversion relationship is x degrees of electricity to 1 standard cubic meter of hydrogen.

[0037] Figure 2 This is a flowchart illustrating a capacity configuration method for an ammonia production system according to an exemplary embodiment of the present disclosure.

[0038] As described above, a new energy ammonia production system may include a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, an ammonia synthesis unit, and an ammonia storage unit. See below for further details. Figure 2This describes a capacity configuration method for an ammonia production system according to exemplary embodiments of the present disclosure.

[0039] In step S201, based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, the purchase and sale data of the ammonia production system within the predetermined period are determined. Specifically, the purchase and sale data of the ammonia production system within the predetermined period can be determined in conjunction with energy management strategies. For example, the purchase and sale data includes one or more of the following: electricity sales revenue, hydrogen sales revenue, ammonia sales revenue, nitrogen sales revenue, electricity purchase cost, hydrogen purchase cost, nitrogen purchase cost, ammonia purchase cost, system regulation costs due to surplus electricity fed into the grid, and system backup capacity costs due to electricity purchase.

[0040] In one example, the step of determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit within a predetermined period may include: in response to the electricity generated by the new energy power generation unit within a predetermined period being lower than the lower limit of the electricity consumption of the hydrogen production unit, setting the electricity consumption for hydrogen production within the predetermined period to zero, and determining the electricity sales revenue based on the electricity generated by the new energy power generation unit within the predetermined period; in response to the electricity generated by the new energy power generation unit within a predetermined period being higher than the lower limit of the electricity consumption of the hydrogen production unit but lower than the upper limit of the electricity consumption of the hydrogen production unit, setting the electricity consumption for hydrogen production within the predetermined period to be equal to the electricity generated by the new energy power generation unit within the predetermined period, and determining the electricity sales revenue to be zero; in response to the electricity generated by the new energy power generation unit within a predetermined period being higher than the upper limit of the electricity consumption of the hydrogen production unit, setting the electricity consumption for hydrogen production within the predetermined period to be equal to the upper limit of the electricity consumption of the hydrogen production unit, and determining the electricity sales revenue based on the difference between the electricity generated by the new energy power generation unit and the upper limit of the electricity consumption of the hydrogen production unit.

[0041] In another example, the step of determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit within a predetermined period may include: determining the hydrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; determining the hydrogen production within a predetermined period based on the electricity consumption for hydrogen production; in response to the hydrogen production within a predetermined period being greater than the hydrogen demand within a predetermined period, setting the hydrogen consumption within a predetermined period to be equal to the hydrogen demand within a predetermined period, setting the hydrogen storage increment within a predetermined period to be equal to the difference between the hydrogen production within a predetermined period and the hydrogen demand within a predetermined period, and in response to the total hydrogen storage exceeding the hydrogen storage limit, determining the hydrogen sales revenue within a predetermined period based on the difference between the total hydrogen storage and the hydrogen storage limit; in response to the hydrogen production within a predetermined period being less than the hydrogen demand within a predetermined period and the current hydrogen storage within a predetermined period being less than or equal to the difference between the hydrogen production within a predetermined period and the hydrogen demand within a predetermined period, determining the electricity purchase cost and / or hydrogen purchase cost within a predetermined period based on the difference between the difference and the current hydrogen storage within a predetermined period.

[0042] In another example, the steps for determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit within a predetermined period include: determining the nitrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; in response to the nitrogen production within a predetermined period being greater than the nitrogen demand within a predetermined period, setting the nitrogen consumption within a predetermined period to be equal to the nitrogen demand within a predetermined period, setting the nitrogen storage increment within a predetermined period to be equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, and in response to the total nitrogen storage exceeding the nitrogen storage limit, determining the nitrogen sales revenue within a predetermined period based on the difference between the total nitrogen storage and the nitrogen storage limit; in response to the nitrogen production within a predetermined period being less than the nitrogen demand within a predetermined period and the current nitrogen storage within a predetermined period being less than or equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, determining the electricity purchase cost and / or nitrogen purchase cost within a predetermined period based on the difference between the difference and the current nitrogen storage within a predetermined period.

[0043] In another example, the steps for determining the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit within a predetermined period include: in response to the amount of synthetic ammonia within the predetermined period being greater than the ammonia demand within the predetermined period, setting the amount of ammonia used within the predetermined period to be equal to the ammonia demand within the predetermined period, setting the incremental ammonia storage within the predetermined period to be equal to the difference between the amount of synthetic ammonia within the predetermined period and the ammonia demand within the predetermined period, and in response to the total ammonia storage exceeding the upper limit of ammonia storage, determining the ammonia sales revenue within the predetermined period based on the difference between the total ammonia storage and the upper limit of ammonia storage; and in response to the amount of synthetic ammonia within the predetermined period being less than the ammonia demand within the predetermined period and the current ammonia storage within the predetermined period being less than or equal to the difference between the amount of synthetic ammonia within the predetermined period and the ammonia demand within the predetermined period, determining the ammonia purchase cost within the predetermined period based on the difference between the difference and the current ammonia storage within the predetermined period.

[0044] In step S202, based on the cost parameters and purchase and sales data of the ammonia production system within a predetermined period, the objective function of the capacity configuration model for the ammonia production system is determined. For example, the cost parameters of the ammonia production system within the predetermined period may include the initial investment cost, operation and maintenance cost, and residual value of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit. In another example, the cost parameters of the ammonia production system within the predetermined period may also include the initial investment cost, operation and maintenance cost, and residual value of other devices (e.g., waste heat recovery power generation unit or ammonia off-gas recovery unit). Specifically, for example, the operating revenue of the ammonia production system can be determined based on the purchase and sales data of the ammonia production system within the predetermined period; based on the operating revenue, initial investment cost, operation and maintenance cost, and residual value of the ammonia production system, an objective function for maximizing the benefits of the ammonia production system is determined.

[0045] In step S203, based on the objective function of the capacity configuration model of the ammonia production system, the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit are determined, and the capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit is configured according to the capacity configuration parameters. For example, the optimal initial investment and / or optimal operation and maintenance costs of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit can be determined based on the maximum benefit of the ammonia production system. Based on the optimal initial investment and / or optimal operation and maintenance costs of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, as well as the investment cost and / or operation and maintenance cost per unit capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit can be determined.

[0046] The capacity configuration method for ammonia production systems disclosed herein comprehensively considers the adjustment capabilities of each process stage in new energy ammonia production. Under the condition of uncertainty in power generation, the adjustment capabilities of each stage are used to optimize the configuration mode of new energy ammonia production, thereby achieving high economy and reliability in the operation of new energy ammonia production systems.

[0047] Figures 3A to 3D This is a flowchart illustrating an energy management strategy according to an exemplary embodiment of the present disclosure.

[0048] like Figures 3A to 3D As shown, in step S301, the power generation of the new energy power station can be calculated based on data such as wind speed or solar radiation, and the new energy power generation data P can be obtained. w (t), and obtain the demand for ammonia synthesis, hydrogen production, and nitrogen production. In step S302, based on the adjustment range of hydrogen production through water electrolysis and the electro-hydrogen conversion efficiency, calculate the power consumption range for hydrogen production through water electrolysis (the lower and upper limits are respectively represented by P). zq.min and P zq.max In step S303, the new energy power generation data P is determined. w (t) Is it less than the lower limit P of the electricity consumption range for hydrogen production via water electrolysis? zq.min If the new energy power generation data P is determined in step S303... w (t) is less than the lower limit P of the electricity consumption range for hydrogen production via water electrolysis. zq.min If the condition is met, proceed to step S305; otherwise, proceed to step S304. In step S305, the grid-connected power is set to be equal to the new energy power generation data (i.e., P). sw (t)=P w (t)), and set the hydrogen production power to zero, (i.e., P)zq (t) = 0). In step S304, determine the new energy power generation data P. w (t) Whether it exceeds the upper limit P of the electricity consumption range for hydrogen production via water electrolysis. zq.max If the new energy power generation data P is determined in step S304... w (t) is greater than the upper limit P of the electricity consumption range for hydrogen production via water electrolysis. zq.max If the condition is met, proceed to step S306; otherwise, proceed to step S307. In step S306, the grid-connected power is set to be equal to the difference between the new energy power generation data and the upper limit of the electricity consumption range for hydrogen production via water electrolysis (i.e., P). sw (t)=P w (t)-P zq.max Furthermore, the hydrogen production power is set to the upper limit of the electricity consumption range for hydrogen production via water electrolysis (i.e., P). zq (t)=P zq.max In step S307, the internet power is set to 0 (i.e., P). sw (t)=0), and set the hydrogen production power to be the same as the new energy power generation data P. w (t) are equal (i.e., P) zq (t)=P w (t)). In step S308, the cumulative electricity consumption P is calculated. swx (t), satisfying P swx (t)=P swx (t-1)+P sw (t). In step S309, the cumulative electricity consumption P is determined. swx (t) Whether it is less than or equal to the maximum on-grid electricity generation of the new energy power station P swdlz (i.e., whether P is satisfied) swx (t)≤P swdlz If it is determined in step S309 that P is satisfied... swx (t)≤P swdlz Then proceed to step S310 to access the internet normally (i.e., P... sw =P swx (t)), otherwise proceed to step S311, where excess electricity is discarded, and the cumulative discarded electricity P qdx (t) satisfies P qdx (t)=max(P swx (t)-P swdlz ,0), P sw =P swdlz .

[0049] In step S312, the hydrogen supply curve and the hydrogen demand curve are compared to determine the hydrogen production and consumption curve. In step S313, it is determined whether the hydrogen supply is greater than or equal to the hydrogen demand (i.e., whether P is satisfied). zq (t)≥P xq(t)). If it is determined in step S313 that P is satisfied... zq (t)≥P xq If (t), proceed to step S315; otherwise, proceed to step S314. In step S315, the amount of hydrogen used within the predetermined period is set to be equal to the amount of hydrogen demand (i.e., P). yq (t)=P xq (t)), and the hydrogen storage increment within the predetermined period is set as the difference between the hydrogen supply and the hydrogen demand (i.e., P). cq (t)=P zq (t)-P xq (t)). In step S316, calculate the total hydrogen storage capacity P of the hydrogen storage tank at this time. cqx (t). In step S319, the total hydrogen storage capacity P of the hydrogen storage tank is determined. cqx (t) Whether it is less than or equal to the regulation limit of the hydrogen storage system (i.e., whether P is satisfied). cqx (t)≤P cq.max If it is determined in step S319 that P is satisfied... cqx (t)≤P cq.max If the condition is met, proceed to step S320; otherwise, proceed to step S321. In step S320, the total hydrogen storage capacity of the hydrogen storage tank is set to satisfy P. cqx (t)=P cqx (t-1)+P cq (t). In step S321, the total hydrogen storage capacity of the hydrogen storage tank is set to satisfy P. sqx (t)=P sqx (t-1)+P cqx (t)-P cq.max The portion of hydrogen exceeding the regulation limit of the hydrogen storage system will be sold, that is, satisfying P. sqx (t)=P sqx (t-1)+P cqx (t)-P cq.max In addition, when the hydrogen supply is lower than the hydrogen demand, the shortfall will be made up first by utilizing the hydrogen stored in the hydrogen storage tank. cq (t) Supply is carried out, and in step S314, it is determined whether the current hydrogen storage capacity within the predetermined period is less than or equal to the difference between the hydrogen production capacity and the hydrogen demand capacity within the predetermined period (i.e., whether P is satisfied). cq (t)>P zq (t)-P xq (t)). If it is determined in step S314 that P is satisfied... cq (t)>P zq (t)-P xq If (t) is true, proceed to step S317; otherwise, proceed to step S318. In step S317, the hydrogen storage capacity is set to satisfy P. cq (t+1)=Pcq (t)-P zq (t)+P xq (t). In step S318, the hydrogen deficiency is marked as P. qqr At this time, P cq (t+1)=P cq.min P qqr (t)=P zq (t)-P xq (t)-P cq (t), hydrogen shortage utilizes online electricity purchase P wgdq (t) Hydrogen production and direct hydrogen purchase P wgq (t) supplement, satisfying P qqr (t)=P wgdq (t) / x+P wgq (t).

[0050] In step S322, the annual hydrogen sales volume is calculated. In step S323, it is determined whether the annual hydrogen sales volume is less than or equal to the maximum hydrogen sales volume (i.e., whether P is satisfied). sqx (t)≤P sqz If it is determined in step S323 that P is satisfied... sqx (t)≤P sqz Then proceed to step S324 to set the hydrogen sales quantity to meet P. sq =P sqx (t), otherwise proceed to step S325 to stop the hydrogen production process.

[0051] In step S326, the ammonia synthesis requirements and nitrogen requirements are determined. In step S327, the electricity requirements P for nitrogen production are determined. zdd (t) and the electricity demand P for the ammonia synthesis process hcad (t). The electricity generated by the waste heat recovery device supplies the electricity demand for nitrogen production, P. zdd (t) and the electricity demand P for the ammonia synthesis process hcad In case (t), in step S328, the electrical energy generated by the waste heat recovery device is calculated. The electrical energy generated by the waste heat recovery device is related to the ammonia synthesis capacity at that moment, satisfying P. yr (t)=P hca (t) / A, where P yr (t) represents the electrical energy generated by the waste heat recovery device, P hca (t) represents the ammonia synthesis capacity at that moment, and A is the conversion coefficient. In step S329, it is determined whether the electrical energy generated by the waste heat recovery device is greater than the electricity demand P for nitrogen production. zdd (t) and the electricity demand P for the ammonia synthesis process hcad The sum of (t) (i.e., whether P is satisfied) yr (t)>P hcad (t)+P zdd(t)). If it is determined in step S329 that P is satisfied... yr (t)>P hcad (t)+P zdd If (t), then in step S344, the waste heat recovery device is used to meet the ammonia and nitrogen production needs and the excess electricity is fed into the grid. Otherwise, proceed to step S333. In step S333, the electricity shortfall for ammonia and nitrogen production is covered by grid-purchased electricity P. wgdd (t) and P wgdhca (t) is supplemented to ensure continuous production in the nitrogen production and ammonia synthesis stages.

[0052] In step S345, it is determined whether the nitrogen supply within the predetermined period is greater than the nitrogen demand (i.e., whether the P requirement is met). zd (t)≥P xd (t)). If it is determined in step S345 that P is satisfied... zd (t)≥P xd If (t), proceed to step S347; otherwise, proceed to step S346. In step S347, the nitrogen consumption within the predetermined period is set to be equal to the nitrogen demand within the predetermined period (i.e., P). yd (t)=P xd (t)), setting the nitrogen storage increment within a predetermined period to be equal to the difference between the nitrogen production and nitrogen demand within the predetermined period (i.e., P). cd (t)=P zd (t)-P xd (t)).

[0053] In step S349, calculate the total nitrogen storage capacity P of the nitrogen storage tank at this time. cdx (t), and in step S351 determine whether P is satisfied. cdx (t)≤P cd.max If it is determined in step S351 that P is satisfied... cdx (t)≤P cd.max If the condition is met, proceed to step S352; otherwise, proceed to step S354. In step S352, the total nitrogen storage capacity P is... cdx (t) is set to satisfy P cdx (t)=P cdx (t-1)+P cd (t). After the nitrogen storage tank is full, nitrogen is sold in step S354 (satisfying P). sdx (t)=P sdx (t-1)+P cdx (t)-P cd.max ).

[0054] In step S353, the annual nitrogen sales volume is calculated. In step S355, it is determined whether the annual nitrogen sales volume is less than or equal to the maximum nitrogen sales volume (i.e., whether P is satisfied).sdx (t)≤P sdz If it is determined in step S355 that P is satisfied... sdx (t)≤P sdz Then in step S356, the nitrogen sales quantity is set to meet P. sd =P sdx (t), otherwise stop the nitrogen production process in step S357.

[0055] The nitrogen supply during the predetermined period is lower than the nitrogen demand (i.e., P). zd (t)<P xd In the case of (t)), the missing portion of nitrogen P stored in the nitrogen storage tank is preferentially utilized. cd (t) Supply is carried out. In step S346, it is determined whether the current nitrogen storage in the predetermined period is less than or equal to the difference between the nitrogen production in the predetermined period and the nitrogen demand in the predetermined period (i.e., whether P is satisfied). cd (t)>P zd (t)-P xd (t)). If it is determined in step S346 that P is satisfied... cd (t)>P zd (t)-P xd If (t) is true, proceed to step S348; otherwise, proceed to step S350. In step S348, the nitrogen storage amount is set to satisfy P. cd (t+1)=P cd (t)-P zd (t)+P xd (t). In step S350, the nitrogen deficiency is marked as P. dqr And set the nitrogen storage capacity to P cd (t+1)=P cd.min P dqr (t)=P zd (t)-P xd (t)-P cd (t), nitrogen deficit utilization through online electricity purchase P wgdd (t) Nitrogen production and direct purchase of nitrogen P wgd (t) supplement, satisfying P dqr (t)=P wgdd (t) / y+P wgd (t).

[0056] In step S330, it is determined whether the ammonia supply is greater than or equal to the ammonia demand (i.e., whether P is satisfied). zhca (t)≥P xhca (t)). If it is determined in step S330 that P is satisfied... zhca (t)≥P xhcaIf (t), proceed to step S332; otherwise, proceed to step S331. In step S332, the ammonia consumption within the predetermined period is set to be equal to the ammonia demand within the predetermined period (i.e., P). yhca (t)=P xhca (t)), setting the incremental ammonia storage within a predetermined period to be equal to the difference between the amount of synthetic ammonia and the ammonia demand within a predetermined period (i.e., P). chca (t)=P zhca (t)-P xhca (t)). In step S335, calculate the total ammonia storage capacity P of the ammonia storage tank at this time. chcax (t). In step S337, the total ammonia storage capacity P is determined. chcax (t) Whether it is less than or equal to the upper limit of the regulation of the ammonia storage system (i.e., whether it satisfies P) chcax (t)≤P chca.max If it is determined in step S337 that P is satisfied... chcax (t)≤P chca.max If the condition is met, proceed to step S338; otherwise, proceed to step S340. In step S338, the total ammonia storage capacity P is... chcax (t) is set to satisfy P chcax (t)=P chcax (t-1)+P chca (t). After the ammonia storage tank is full, ammonia is sold in step S340 to satisfy P. shcax (t)=P shcax (t-1)+P chcax (t)-P chca.max .

[0057] When the ammonia supply is lower than the ammonia demand (i.e., P) zhca (t)<P xhca In the case of (t)), the missing portion of the synthetic ammonia P stored in the ammonia storage tank is preferentially utilized. chca (t) Supply is carried out, and in step S331 it is determined whether the current ammonia storage amount within the predetermined period is greater than the difference between the synthetic ammonia amount within the predetermined period and the ammonia demand within the predetermined period (i.e., whether P is satisfied). chca (t)>P zhca (t)-P xhca (t)). If it is determined in step S331 that P is satisfied... chca (t)>P zhca (t)-P xhca If (t) is true, proceed to step S334; otherwise, proceed to step S336. In step S334, the ammonia storage amount is set to satisfy P. chca (t+1)=P chca (t)-P zhca (t)+P xhca(t). When the ammonia supply demand cannot be met (i.e., P... chca (t)≤P zhca (t)-P xhca In the case of (t)), in step S336, the ammonia synthesis deficit is marked as P. hcaqr Set the ammonia storage capacity to P. chca (t+1)=P chca.min P hcaqr (t)=P zhca (t)-P xhca (t)-P chca (t), the shortage of synthetic ammonia is utilized by directly purchasing synthetic ammonia P. wghca (t) supplement, satisfying P hcaqr (t)=P wghca (t).

[0058] In step S339, the annual ammonia sales volume is calculated, and in step S341, it is determined whether the annual ammonia sales volume is less than or equal to the maximum ammonia sales volume (i.e., whether P is satisfied). shcax (t)≤P shcaz If it is determined in step S341 that P is satisfied... shcax (t)≤P shcaz Then proceed to step S342 to set the ammonia sales quantity to P. shca =P shcax (t), otherwise the ammonia synthesis process is stopped in step S343.

[0059] The above description applies to energy control strategies for a predetermined period (e.g., calculated on a daily basis), and it should be understood that the order of the steps described is merely an example and the order between different steps can be adjusted as needed, or one or more steps can be added or removed.

[0060] Figure 4 This is a flowchart illustrating a capacity configuration strategy according to an embodiment of the present disclosure.

[0061] like Figure 4 As shown, in step S401, the initial investment cost of the ammonia production system is calculated. For example, the initial investment cost can be calculated as follows:

[0062]

[0063] Among them, C i,cs The initial investment is for new energy power plants, hydrogen production and storage via water electrolysis, nitrogen production and storage, ammonia synthesis and storage, waste heat recovery power generation devices, and ammonia off-gas recovery devices. k is the discount rate, and n is the service life of the system.

[0064] In step S402, the operation and maintenance costs of the ammonia production system are calculated. These costs mainly consider labor costs, material costs, and other expenses, and can be calculated as follows:

[0065]

[0066] Among them, Y i The operation and maintenance cost coefficient for new energy power plants, hydrogen production and storage via water electrolysis, nitrogen production and storage, ammonia synthesis and storage, waste heat recovery power generation devices, and ammonia off-gas recovery devices.

[0067] In step S403, the residual value of the ammonia production system is calculated. The residual value can be factored into the system residual value, which can be calculated as follows:

[0068]

[0069] Among them, C i,cz The residual value of new energy power plants, hydrogen production and storage via water electrolysis, nitrogen production and storage, ammonia synthesis and storage, waste heat recovery power generation devices, and ammonia off-gas recovery devices.

[0070] In step S404, the operating revenue of the ammonia production system is calculated. The operating revenue of the ammonia production system can be considered after considering the revenue from the purchase and sale of electricity, hydrogen, ammonia, and nitrogen, and can be calculated as follows:

[0071]

[0072] Among them, C i,sr Representing revenue from electricity sales, hydrogen sales, ammonia sales, and nitrogen sales, C i,zc C represents the cost of purchasing electricity, hydrogen, ammonia, and nitrogen. xtbr C is responsible for system adjustment costs incurred due to surplus electricity being fed into the grid. rldf This refers to the system backup capacity costs incurred due to electricity purchases.

[0073] In step S405, operational optimization is performed with the goal of maximizing life-cycle benefits to determine the optimal capacity configuration. For example, the scheduling calculation period can be set to days, and the objective function can be the maximization of life-cycle benefits, as shown below:

[0074] S = max(C sr +C zj -C cs -C yw )

[0075] Among them, C sr For operating revenue, C cz For residual value, C cs For the initial investment, C yw For operation and maintenance costs.

[0076] It should be understood that, in the case that the ammonia production system does not include a waste heat recovery power generation device or an ammonia purge gas recovery device, the parts related to the waste heat recovery power generation device and the ammonia purge gas recovery device can be omitted from the above formula.

[0077] By adopting the capacity configuration strategy according to the embodiments of this disclosure, and by analyzing the fluctuations of new energy sources, electricity price information, hydrogen price information, nitrogen price information, and ammonia price information, and by combining the analysis and trade-off of the operating status and boundary conditions of the new energy ammonia production equipment, the energy management strategy of the new energy ammonia production system is determined. Based on the energy management strategy, the optimal capacity configuration strategy is optimized and iterated to improve the economy and reliability of the system operation.

[0078] Figure 5 A block diagram of a capacity configuration apparatus for an ammonia production system according to an exemplary embodiment of the present disclosure is shown.

[0079] As described above, an ammonia production system may include a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, an ammonia synthesis unit, and an ammonia storage unit. For example... Figure 5 As shown, the capacity configuration apparatus 500 for an ammonia production system according to an exemplary embodiment of this disclosure may include: a purchase and sale data determination unit 501, which determines the purchase and sale data of the ammonia production system within a predetermined period based on the demand for synthetic ammonia and the electricity generated by the new energy power generation unit; an objective function determination unit 502, which determines the objective function of the capacity configuration model of the ammonia production system based on the cost parameters of the ammonia production system within the predetermined period and the purchase and sale data; and a capacity configuration unit 503, which determines the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit based on the objective function, and configures the capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit according to the capacity configuration parameters. For example, the cost parameters of the ammonia production system within the predetermined period may include the initial investment cost, operation and maintenance cost, and residual value of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, synthetic ammonia unit, and ammonia storage unit. For example, the purchase and sales data of the ammonia production system within a predetermined period includes one or more of the following: electricity sales revenue, hydrogen sales revenue, ammonia sales revenue, nitrogen sales revenue, electricity purchase cost, hydrogen purchase cost, nitrogen purchase cost, ammonia purchase cost, system regulation costs due to surplus electricity being fed into the grid, and system backup capacity costs due to electricity purchase.

[0080] In the example, the objective function determination unit 502 performs the following operations: based on purchase and sales data, determines the operating revenue of the ammonia production system; based on the operating revenue, initial investment cost, operation and maintenance cost, and residual value of the ammonia production system, determines the objective function for maximizing the benefits of the ammonia production system. The capacity configuration unit 503 performs the following operations: based on the maximum benefit of the ammonia production system, determines the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit; based on the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, and the investment cost and / or operation and maintenance cost per unit capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, determines the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit.

[0081] In the example, the purchase and sale data determination unit 501 may perform the following operations: In response to the fact that the electricity generated by the new energy power generation unit within a predetermined period is lower than the lower limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to zero, and the electricity sales revenue is determined based on the electricity generated by the new energy power generation unit within the predetermined period; In response to the fact that the electricity generated by the new energy power generation unit within the predetermined period is higher than the lower limit of the electricity consumption of the hydrogen production unit but lower than the upper limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to be equal to the electricity generated by the new energy power generation unit within the predetermined period, and the electricity sales revenue is determined to be zero; In response to the fact that the electricity generated by the new energy power generation unit within the predetermined period is higher than the upper limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to be equal to the upper limit of the electricity consumption of the hydrogen production unit, and the electricity sales revenue is determined based on the difference between the electricity generated by the new energy power generation unit and the upper limit of the electricity consumption of the hydrogen production unit.

[0082] In the example, the purchase and sale data determination unit 501 may perform the following operations: determine the hydrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; determine the hydrogen production within a predetermined period based on the electricity consumption for hydrogen production; in response to the hydrogen production within a predetermined period being greater than the hydrogen demand within a predetermined period, set the hydrogen consumption within a predetermined period to be equal to the hydrogen demand within a predetermined period, set the hydrogen storage increment within a predetermined period to be equal to the difference between the hydrogen production within a predetermined period and the hydrogen demand within a predetermined period, and in response to the total hydrogen storage exceeding the hydrogen storage limit, determine the hydrogen sales revenue within a predetermined period based on the difference between the total hydrogen storage and the hydrogen storage limit; in response to the hydrogen production within a predetermined period being less than the hydrogen demand within a predetermined period and the current hydrogen storage within a predetermined period being less than or equal to the difference between the hydrogen production within a predetermined period and the hydrogen demand within a predetermined period, determine the electricity purchase cost and / or hydrogen purchase cost within a predetermined period based on the difference between the difference and the current hydrogen storage within a predetermined period.

[0083] In the example, the purchase and sale data determination unit 501 may perform the following operations: determine the nitrogen demand within a predetermined period based on the demand for synthetic ammonia within a predetermined period; in response to the nitrogen production within a predetermined period being greater than the nitrogen demand within a predetermined period, set the nitrogen consumption within a predetermined period to be equal to the nitrogen demand within a predetermined period, set the nitrogen storage increment within a predetermined period to be equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, and in response to the total nitrogen storage exceeding the nitrogen storage limit, determine the nitrogen sales revenue within a predetermined period based on the difference between the total nitrogen storage and the nitrogen storage limit; in response to the nitrogen production within a predetermined period being less than the nitrogen demand within a predetermined period and the current nitrogen storage within a predetermined period being less than or equal to the difference between the nitrogen production within a predetermined period and the nitrogen demand within a predetermined period, determine the electricity purchase cost and / or nitrogen purchase cost within a predetermined period based on the difference between the difference and the current nitrogen storage within a predetermined period.

[0084] In the example, the purchase and sales data determination unit 501 may perform the following operations: in response to the amount of synthetic ammonia in a predetermined period being greater than the ammonia demand in a predetermined period, the amount of ammonia used in the predetermined period is set to be equal to the ammonia demand in the predetermined period, the increment of ammonia storage in the predetermined period is set to be equal to the difference between the amount of synthetic ammonia in the predetermined period and the ammonia demand in the predetermined period, and in response to the total ammonia storage exceeding the ammonia storage limit, the ammonia sales revenue in the predetermined period is determined based on the difference between the total ammonia storage and the ammonia storage limit; in response to the amount of synthetic ammonia in the predetermined period being less than the ammonia demand in the predetermined period and the current ammonia storage in the predetermined period being less than or equal to the difference between the amount of synthetic ammonia in the predetermined period and the ammonia demand in the predetermined period, the ammonia purchase cost in the predetermined period is determined based on the difference between the difference and the current ammonia storage in the predetermined period.

[0085] The above combination Figures 1 to 4 The specific operations shown are respectively by Figure 5The corresponding unit in the capacity configuration device 500 for the ammonia production system shown here will perform the operation; specific operational details will not be elaborated here.

[0086] Figure 6 This is a block diagram illustrating a computing system including at least one computing device and at least one storage device of storage instructions according to an exemplary embodiment of the present disclosure.

[0087] like Figure 6 As shown, the computing system 600 provided according to an exemplary embodiment of the present invention includes a computing device 601 and a storage device 602. The storage device 602 stores computer-executable instructions. When the computer-executable instructions are executed by the computing device 601, the capacity configuration method for an ammonia production system described in any of the foregoing embodiments is executed.

[0088] The computing device 601 can be deployed in a server or client, or on a node device in a distributed network environment. Furthermore, the computing device 601 can be a PC, tablet, personal digital assistant, smartphone, web application, or other device capable of executing the aforementioned set of instructions. Here, the computing device is not necessarily a single computing device; it can be any collection of devices or circuits capable of executing the aforementioned instructions (or instruction sets) individually or in combination. The computing device can also be part of an integrated control system or system manager, or can be configured to interconnect with a portable electronic device locally or remotely (e.g., via wireless transmission). In the computing device, the processor includes a central processing unit (CPU), a graphics processing unit (GPU), a programmable logic device, a dedicated processor system, a microcontroller, or a microprocessor. By way of example and not limitation, the processor also includes analog processors, digital processors, microprocessors, multi-core processors, processor arrays, network processors, etc.

[0089] According to another aspect of this disclosure, a computer-readable storage medium is provided that stores instructions, which, when executed by at least one computing device, cause the at least one computing device to perform the capacity configuration method for an ammonia production system described in any of the foregoing embodiments. The computer-readable storage medium includes magnetic media such as floppy disks and magnetic tapes, optical media (including optical disc (CD) ROMs and DVD ROMs), magneto-optical media such as floppy discs, hardware devices such as ROMs and RAMs designed for storing and executing program commands, and flash memory. The instructions may include language code executable by a computer using an interpreter and machine language code generated by a compiler.

[0090] By adopting this disclosure, the adjustment capabilities of each link in the new energy ammonia production system can be utilized to optimize the configuration mode of the new energy ammonia production system, thereby achieving high economy and reliability in the operation of the new energy ammonia production system.

[0091] The processes, methods, or algorithms disclosed herein can be transmitted to, or implemented by, a processing device, controller, or computer, which may include any existing programmable electronic control unit or a dedicated electronic control unit. Similarly, the processes, methods, or algorithms can be stored in various forms as data and instructions executable by a controller or computer, including but not limited to information permanently stored on non-writable storage media (such as ROM devices) and information variablely stored on writable storage media (such as floppy disks, magnetic tapes, CDs, RAM devices, and other magnetic and optical media). The processes, methods, or algorithms can also be implemented in a software executable object. Optionally, the processes, methods, or algorithms can be implemented wholly or partially using suitable hardware components (such as ASICs, FPGAs, state machines, controllers, or other hardware components or devices) or a combination of hardware components, software components, and firmware components.

[0092] Although this disclosure includes specific examples, it will be apparent to those skilled in the art that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered merely for descriptive purposes and not for limiting purposes. The description of features or aspects in each example is to be considered applicable to similar features or aspects in other examples. Suitable results may be obtained if the described techniques are performed in a different order, and / or if components in the described system, architecture, apparatus, or circuit are combined in a different manner and / or if components in the described system, architecture, apparatus, or circuit are replaced or supplemented with other components or their equivalents. Therefore, the scope of this disclosure is not limited by the specific embodiments but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents shall be construed as included in this disclosure.

Claims

1. A capacity configuration method for an ammonia production system, characterized in that, The ammonia production system includes a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, an ammonia synthesis unit, and an ammonia storage unit. The capacity configuration method includes: Based on the range of synthetic ammonia supply required within a predetermined period and the historical price curve of synthetic ammonia, the demand for synthetic ammonia within the predetermined period is determined. Based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, the purchase and sales data of the ammonia production system within the predetermined period are determined. Based on the cost parameters and purchase and sales data of the ammonia production system within a predetermined period, the objective function of the capacity configuration model of the ammonia production system is determined. The cost parameters include the initial investment cost, operation and maintenance cost, and residual value of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit. The purchase and sales data include one or more of the following: electricity sales revenue, hydrogen sales revenue, ammonia sales revenue, nitrogen sales revenue, electricity purchase cost, hydrogen purchase cost, nitrogen purchase cost, ammonia purchase cost, system regulation costs due to surplus electricity being fed into the grid, and system backup capacity costs due to electricity purchase. Based on the objective function and constraints, the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit are determined. The capacities of these units are then configured according to these capacity configuration parameters. The constraints include the power consumption adjustment range of the hydrogen production unit, the hydrogen storage capacity adjustment range of the hydrogen storage unit, the nitrogen production capacity adjustment range of the nitrogen production unit, the nitrogen storage capacity adjustment range of the nitrogen storage unit, the ammonia synthesis capacity adjustment range of the ammonia synthesis unit, and the ammonia storage capacity adjustment range of the ammonia storage unit.

2. The capacity configuration method according to claim 1, characterized in that, The steps for determining the objective function of the capacity configuration model of the ammonia production system based on the cost parameters and purchase and sales data of the ammonia production system within a predetermined period include: Based on the purchase and sales data, the operating revenue of the ammonia production system is determined; Based on the operating revenue, initial investment cost, operation and maintenance cost, and residual value of the ammonia production system, an objective function is determined to maximize the benefits of the ammonia production system.

3. The capacity configuration method according to claim 2, characterized in that, Based on the objective function and constraints, the steps for determining the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit include: Based on the maximum benefit of the ammonia production system, determine the optimal initial investment and / or optimal operation and maintenance cost of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit. Based on the optimal initial investment and / or optimal operation and maintenance costs of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, as well as the investment cost and / or operation and maintenance cost per unit capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit are determined.

4. The capacity configuration method according to claim 1, characterized in that, The steps for determining the ammonia production system's purchase and sales data for the predetermined period, based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, include: In response to the fact that the electricity generated by the new energy power generation unit within a predetermined period is lower than the electricity consumption limit of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to zero, and the electricity sales revenue is determined based on the electricity generated by the new energy power generation unit within the predetermined period. In response to the fact that the electricity generated by the new energy power generation unit within a predetermined period is higher than the lower limit of the electricity consumption of the hydrogen production unit but lower than the upper limit of the electricity consumption of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to be equal to the electricity generated by the new energy power generation unit within the predetermined period, and the electricity sales revenue is determined to be zero. In response to the fact that the electricity generated by the new energy power generation unit within a predetermined period is higher than the electricity consumption limit of the hydrogen production unit, the electricity consumption for hydrogen production within the predetermined period is set to be equal to the electricity consumption limit of the hydrogen production unit, and the electricity sales revenue is determined based on the difference between the electricity generated by the new energy power generation unit and the electricity consumption limit of the hydrogen production unit.

5. The capacity configuration method according to claim 4, characterized in that, The steps for determining the ammonia production system's purchase and sales data for the predetermined period, based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, include: Based on the demand for synthetic ammonia within a predetermined period, determine the demand for hydrogen within the predetermined period. Based on the electricity consumption for hydrogen production, determine the amount of hydrogen produced within a predetermined period. In response to the fact that the hydrogen production in the predetermined period is greater than the hydrogen demand in the predetermined period, the hydrogen consumption in the predetermined period is set to be equal to the hydrogen demand in the predetermined period, the hydrogen storage increment in the predetermined period is set to be equal to the difference between the hydrogen production in the predetermined period and the hydrogen demand in the predetermined period, and in response to the fact that the total hydrogen storage exceeds the upper limit of hydrogen storage, the hydrogen sales revenue in the predetermined period is determined based on the difference between the total hydrogen storage and the upper limit of hydrogen storage. In response to a situation where the hydrogen production in a predetermined period is less than the hydrogen demand in a predetermined period and the current hydrogen storage in a predetermined period is less than or equal to the difference between the hydrogen production in a predetermined period and the hydrogen demand in a predetermined period, the electricity purchase cost and / or hydrogen purchase cost in a predetermined period are determined based on the difference between the difference and the current hydrogen storage in a predetermined period.

6. The capacity configuration method according to claim 1, characterized in that, The steps for determining the purchase and sales data of the ammonia production system within the predetermined period, based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, include: Based on the demand for synthetic ammonia within a predetermined period, determine the nitrogen demand within the predetermined period. In response to the nitrogen production exceeding the nitrogen demand within a predetermined period, the nitrogen consumption within the predetermined period is set to be equal to the nitrogen demand within the predetermined period, the nitrogen storage increment within the predetermined period is set to be equal to the difference between the nitrogen production and the nitrogen demand within the predetermined period, and in response to the total nitrogen storage exceeding the upper limit of nitrogen storage, the nitrogen sales revenue within the predetermined period is determined based on the difference between the total nitrogen storage and the upper limit of nitrogen storage. In response to a situation where the nitrogen production in a predetermined period is less than the nitrogen demand in a predetermined period and the current nitrogen storage in a predetermined period is less than or equal to the difference between the nitrogen production in a predetermined period and the nitrogen demand in a predetermined period, the electricity purchase cost and / or nitrogen purchase cost in a predetermined period are determined based on the difference between the difference and the current nitrogen storage in a predetermined period.

7. The capacity configuration method according to claim 1, characterized in that, The steps for determining the purchase and sales data of the ammonia production system within the predetermined period, based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, include: In response to the fact that the amount of synthetic ammonia produced in a predetermined period is greater than the amount of ammonia demanded in a predetermined period, the amount of ammonia used in a predetermined period is set to be equal to the amount of ammonia demanded in a predetermined period, the increment of ammonia storage in a predetermined period is set to be equal to the difference between the amount of synthetic ammonia produced in a predetermined period and the amount of ammonia demanded in a predetermined period, and in response to the fact that the total amount of ammonia storage exceeds the upper limit of ammonia storage, the revenue from ammonia sales in a predetermined period is determined based on the difference between the total amount of ammonia storage and the upper limit of ammonia storage. In response to the fact that the amount of synthetic ammonia produced in a predetermined period is less than the ammonia demand in a predetermined period and the current ammonia storage in a predetermined period is less than or equal to the difference between the amount of synthetic ammonia produced in a predetermined period and the ammonia demand in a predetermined period, the ammonia purchase cost in a predetermined period is determined based on the difference between the difference and the current ammonia storage in a predetermined period.

8. A capacity configuration device for an ammonia production system, characterized in that, The ammonia production system includes a new energy power generation unit, a hydrogen production unit, a hydrogen storage unit, a nitrogen production unit, a nitrogen storage unit, an ammonia synthesis unit, and an ammonia storage unit. The capacity configuration device includes: The purchase and sales data determination unit determines the demand for synthetic ammonia within a predetermined period based on the range of synthetic ammonia that needs to be supplied within a predetermined period and the historical price curve of synthetic ammonia. Based on the demand for synthetic ammonia within a predetermined period and the electricity generated by the new energy power generation unit, it determines the purchase and sales data of the ammonia production system within the predetermined period. The objective function determination unit determines the objective function of the capacity configuration model of the ammonia production system based on the cost parameters and purchase and sales data of the ammonia production system within a predetermined period. The cost parameters include the initial investment cost, operation and maintenance cost, and residual value of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit. The purchase and sales data include one or more of the following: electricity sales revenue, hydrogen sales revenue, ammonia sales revenue, nitrogen sales revenue, electricity purchase cost, hydrogen purchase cost, nitrogen purchase cost, ammonia purchase cost, system regulation costs due to surplus electricity fed into the grid, and system backup capacity costs due to electricity purchase. The capacity configuration unit, based on the objective function and constraints, determines the capacity configuration parameters of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit, and configures the capacity of the new energy power generation unit, hydrogen production unit, hydrogen storage unit, nitrogen production unit, nitrogen storage unit, ammonia synthesis unit, and ammonia storage unit according to the capacity configuration parameters. The constraints include the power consumption adjustment range of the hydrogen production unit, the hydrogen storage capacity adjustment range of the hydrogen storage unit, the nitrogen production capacity adjustment range of the nitrogen production unit, the nitrogen storage capacity adjustment range of the nitrogen storage unit, the ammonia synthesis capacity adjustment range of the ammonia synthesis unit, and the ammonia storage capacity adjustment range of the ammonia storage unit.

9. A computing system comprising at least one computing device and at least one storage device for storing instructions, characterized in that, When the instruction is executed by the at least one computing device, it causes the at least one computing device to perform the capacity configuration method for an ammonia production system according to any one of claims 1 to 7.

10. A computer-readable storage medium for storing instructions, characterized in that, When the instruction is executed by at least one computing device, it causes the at least one computing device to perform the capacity configuration method for an ammonia production system according to any one of claims 1 to 7.

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