Water electrolysis hydrogen production station operation strategy method and system
By dividing the hydrogen production station into long and short cycles, and combining medium- and long-term power purchase agreements with spot market power purchases, the power purchase volume and hydrogen storage strategy are dynamically adjusted, thus solving the problem of high cost of hydrogen production from water electrolysis and achieving economic profitability for the hydrogen production station and stability of downstream hydrogen supply.
Patent Information
- Application Number
- CN202510917853.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2025-11-28
AI Technical Summary
Existing water electrolysis hydrogen production technology is affected by electricity market reforms, resulting in high costs and a lack of effective power purchase strategies to cope with market-oriented changes, leading to persistently high hydrogen production costs and making it difficult to achieve economic profitability.
A hydrogen production station operation strategy based on water electrolysis is proposed. By dividing the operation into long and short cycles and combining medium- and long-term power purchase agreements with spot market power purchases, the power purchase volume and hydrogen storage strategy are dynamically adjusted to optimize hydrogen supply allocation and reduce electricity costs.
This will effectively reduce hydrogen production costs, ensure the stability of downstream hydrogen supply, improve the profitability of hydrogen production stations, and promote the widespread application of green hydrogen.
Smart Images
Figure CN121032018A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of hydrogen production by water electrolysis, and particularly relates to a hydrogen production by water electrolysis station operation strategy method and system. BACKGROUND
[0002] As the most urgent demand for electricity in the hydrogen energy industry chain, the most closely coupled with new energy, and the most relevant to the national low-carbon clean energy strategy, the current situation of hydrogen production by water electrolysis has attracted widespread attention, and its future development has been unanimously recognized by the industry. According to existing research, the cost of hydrogen production by water electrolysis is mainly composed of electricity cost and equipment cost, of which electricity cost accounts for more than 70% of the total cost of hydrogen production by water electrolysis, and equipment cost accounts for about 14%. It can be said that whether green hydrogen produced by water electrolysis has economic profitability, the cost of electricity occupies the most important factor. At present, the hydrogen production cost of most demonstration projects relies on stable protocol electricity price supported by policy, and a small part carries out simple peak-valley electricity price game procurement. On the demand side of hydrogen purchase, most project currently can realize the stable balance of hydrogen production and sale within a period according to the hydrogen purchase agreement signed in advance and the relatively controllable small-scale hydrogen demand for transportation.
[0003] As the part of hydrogen production by water electrolysis which is greatly affected by electricity price, a new strategy is also urgently needed to cope with the mode change of electricity purchase market. SUMMARY
[0004] In view of the above problems, the application provides a hydrogen production by water electrolysis station operation strategy method, which comprises the following steps: Divide the operation cycle: the entire hydrogen production station includes X long cycles, the long cycle is T, and a hydrogen storage module is arranged in the hydrogen production station; the long cycle is composed of Y short cycles, and the short cycle is t; Long cycle preparation: collect information of electricity purchase and hydrogen sale related data and historical operation data; Determine the medium and long term electricity purchase proportion and the spot market electricity purchase proportion based on the collected information of electricity purchase and hydrogen sale related data and historical operation data; Long cycle operation: based on the long cycle preparation content, execute the hydrogen supply distribution strategy in each short cycle; Long cycle summary: statistic the hydrogen sale income and hydrogen production cost of the current long cycle; According to the statistical result, optimize the electricity purchase proportion and the hydrogen storage strategy of the hydrogen storage module of the next long cycle.
[0005] Further, the electricity purchase and hydrogen sale related data includes: medium and long term electricity price, real-time spot electricity price prediction and downstream hydrogen purchase demand in the long cycle.
[0006] Further, determining the medium and long term electricity purchase proportion and the spot market electricity purchase proportion comprises: signing the medium and long term electricity purchase agreement and the hydrogen sale agreement.
[0007] Further, the hydrogen supply distribution strategy is executed in each short period, including: Fixed hydrogen supply part: according to the medium and long-term electricity purchase agreement, the electricity resource is distributed in a fixed ratio to produce hydrogen, and the hydrogen production is stored in the hydrogen storage module for current short period use and sale; Variable hydrogen supply part: dynamically adjust the hydrogen production strategy according to the real-time electricity price of the spot market and the remaining capacity of the hydrogen storage module; Short period summary part: statistics of the hydrogen sales revenue and hydrogen production cost in the current short period; According to the statistical results, the strategy of the variable hydrogen supply part in the next short period is optimized.
[0008] Further, the hydrogen production strategy is dynamically adjusted according to the real-time electricity price of the spot market and the remaining capacity of the hydrogen storage module, including: If the real-time electricity price is lower than the preset threshold, increase the spot market electricity purchase and hydrogen storage; If the real-time electricity price is higher than the preset threshold, reduce the spot market electricity purchase and call the cross-period hydrogen storage of the hydrogen storage module to supplement the hydrogen supply.
[0009] Further, the medium and long-term electricity purchase ratio is greater than 60%.
[0010] Further, the operation of the hydrogen storage module satisfies the following constraint conditions: At the end of each long period T, the hydrogen storage amount of the hydrogen storage module is cleared; The cross-period hydrogen storage amount of the hydrogen storage module is greater than the current short period hydrogen calling amount.
[0011] Further, the hydrogen sales revenue and hydrogen production cost in the current short period are calculated, including: Based on the long-period hydrogen sales amount and the hydrogen sales unit price in the hydrogen sales agreement, the total hydrogen sales revenue is determined; Based on the medium and long-term electricity purchase amount and the electricity purchase unit price in the medium and long-term electricity purchase agreement, the spot market electricity purchase amount and the market electricity price, the hydrogen production depreciation cost, and the hydrogen storage depreciation cost, the total hydrogen production cost is determined.
[0012] Further, the hydrogen sales revenue and hydrogen production cost in the current short period are calculated, including: Based on the total hydrogen sales revenue and the number of short periods Y, the short period hydrogen sales revenue is determined; Based on the electricity purchase hydrogen production strategy and the hydrogen storage distribution strategy of the fixed hydrogen supply part and the variable hydrogen supply part, the short period hydrogen production cost is determined.
[0013] The present application proposes a water electrolysis hydrogen production station operation strategy system, which is applied to the above-mentioned operation strategy method, including: Data acquisition module: used for collecting information of electricity purchase and hydrogen sales related data and historical operation data; Strategy decision module: determine medium and long-term electricity purchasing ratio and spot market electricity purchasing ratio based on information of data acquisition module; Execution control module: execute hydrogen supply distribution strategy in each short period according to instructions of strategy decision module; Cost analysis module: used for statistics of current long period hydrogen sales revenue and hydrogen production cost; According to the statistical results, the electricity purchasing ratio and the hydrogen storage strategy of the hydrogen storage module in the next long period are optimized.
[0014] Further, the hydrogen storage module comprises: Storage selling unit: used for selling in the current short period; Cross-period storage unit: used for cross-period storage of redundant hydrogen production; Capacity monitoring unit: real-time monitoring of hydrogen storage capacity and feedback to strategy decision module; Cost calculation unit: calculate the sunk cost according to the hydrogen storage period and the calling frequency.
[0015] Further, the strategy decision module further comprises: Medium and long-term contract optimization submodule, used for matching the lowest electricity price medium and long-term electricity purchasing agreement; Spot market game submodule, based on real-time electricity price prediction model to generate electricity purchasing decision; Hydrogen storage scheduling submodule, adjust the hydrogen storage calling strategy according to the electricity price fluctuation and demand gap.
[0016] Beneficial effects The beneficial effects of the present application relative to the prior art are as follows: 1. The present application fills the gap of power market reform and hydrogen energy coupling, and provides an operation strategy mode for hydrogen production station based on electricity price marketization. The strategy innovatively proposes a combination mode of medium and long-term market as the main and spot market as the auxiliary, which effectively guarantees the stability of hydrogen supply to the downstream, and fully utilizes the electricity price difference game of the spot market to provide lower power cost for the hydrogen production station. At the same time, the strategy innovatively proposes a combination mode of long-period macro-control and short-period dynamic regulation, which provides the maximum adjustment space for the hydrogen production station.
[0017] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structures indicated in the specification and drawings. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0019] Figure 1 The method flowchart of the embodiment of the present application is shown. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.
[0021] The objective factor of high cost of hydrogen produced by the existing water electrolysis hydrogen production technology affects that, in order to promote the downstream application and sales of hydrogen energy, the hydrogen production cost of most demonstration projects at present relies on the stable agreement price under policy support, and a small part carries out simple peak-valley electricity price game procurement. With the deepening of the reform of the electricity market and the continuous maturity and scale expansion of the water electrolysis hydrogen production industry, it is necessary to set up a water electrolysis hydrogen production station operation strategy method based on the electricity market electricity selling mode, which is the only way to promote the marketization of hydrogen energy and realize the widespread application of production and life. At present, due to the relatively low maturity of water electrolysis hydrogen production and the reform of the electricity market, the research and method at the junction of the two are very thin.
[0022] The present application provides a water electrolysis hydrogen production station operation strategy method, referring to Figure 1 , comprising the following steps: Divide the operation cycle: the entire hydrogen production station includes X long cycles, the long cycle is T, and a hydrogen storage module is arranged in the hydrogen production station; the long cycle is composed of Y short cycles, and the short cycle is t; Long cycle preparation: collect information of electricity purchase and hydrogen sales related data and historical operation data; Based on the collected information of electricity purchase and hydrogen sales related data and historical operation data, determine the medium and long term electricity purchase proportion and the spot market electricity purchase proportion; Long cycle operation: based on the long cycle preparation content, execute the hydrogen supply distribution strategy in each short cycle; Long cycle summary: statistics the hydrogen sales income and hydrogen production cost of the current long cycle; According to the statistical results, optimize the electricity purchase proportion and hydrogen storage strategy of the next long cycle.
[0023] The electricity purchase and hydrogen sale related data includes: medium and long term electricity price in a long period, real-time spot electricity price prediction and downstream hydrogen purchase demand.
[0024] The medium and long term electricity purchase proportion and the spot market electricity purchase proportion are determined, including: signing a medium and long term electricity purchase agreement and a hydrogen sale agreement.
[0025] The hydrogen supply distribution strategy is executed in each short period, including: Fixed hydrogen supply part: according to the medium and long term electricity purchase agreement, the electricity resources are distributed for hydrogen production at a fixed proportion, and the hydrogen production amount is stored in the hydrogen storage module for current short period use and sale; Variable hydrogen supply part: the electricity purchase and hydrogen production strategy is dynamically adjusted according to the real-time electricity price of the spot market and the remaining capacity of the hydrogen storage module; Short period summary part: the hydrogen sale income and hydrogen production cost of the current short period are counted; According to the statistical results, the strategy of the variable hydrogen supply part of the next short period is optimized.
[0026] The electricity purchase and hydrogen production strategy is dynamically adjusted according to the real-time electricity price of the spot market and the remaining capacity of the hydrogen storage module, including: If the real-time electricity price is lower than the preset threshold, the spot market electricity purchase amount is increased and hydrogen is produced and stored; If the real-time electricity price is higher than the preset threshold, the spot market electricity purchase amount is reduced and the cross-period stored hydrogen amount of the hydrogen storage module is called to supplement the hydrogen supply.
[0027] The medium and long term electricity purchase proportion is greater than sixty percent.
[0028] The electricity purchase and hydrogen production strategy is dynamically adjusted according to the real-time electricity price of the spot market and the remaining capacity of the hydrogen storage module, and further includes: In the current short period; If the sum of the spot market electricity purchase and hydrogen production amount and the hydrogen amount extracted from the hydrogen storage module is greater than the total hydrogen demand amount of the current short period, the remaining hydrogen is stored in the hydrogen storage module; If the sum of the spot market electricity purchase and hydrogen production amount and the hydrogen amount extracted from the hydrogen storage module is less than the total hydrogen demand amount of the current short period, the hydrogen stored in the hydrogen storage module in the historical short period is extracted for supplement.
[0029] The operation of the hydrogen storage module satisfies the following constraint conditions; At the end of each long period T, the stored hydrogen amount of the hydrogen storage module is cleared; The cross-period stored hydrogen amount of the hydrogen storage module is greater than the current short period hydrogen calling amount.
[0030] The hydrogen sale income and hydrogen production cost of the current long period are counted, including: Based on the long period hydrogen sale amount and the hydrogen sale unit price in the hydrogen sale agreement, the total hydrogen sale income is determined; Determine the total hydrogen production cost based on the medium and long-term electricity purchase quantity and purchase price in the medium and long-term electricity purchase agreement, spot market electricity purchase quantity and market price, hydrogen production depreciation cost, and hydrogen storage depreciation cost.
[0031] Statistically determine the current short cycle hydrogen sales revenue and hydrogen production cost, including: Determine the short cycle hydrogen sales revenue based on the total hydrogen sales revenue and the number of short cycles Y. Determine the short cycle hydrogen production cost based on the fixed hydrogen supply part and the variable hydrogen supply part of the electricity purchase hydrogen production strategy and the hydrogen storage allocation strategy.
[0032] The series strategy of electricity purchase, hydrogen production, hydrogen storage, and hydrogen sales for the medium and long-term market and the spot market realizes the minimization of the hydrogen production station cost under the stable downstream hydrogen purchase demand condition.
[0033] First, unify the complex electrolytic water hydrogen station buying and selling situations under different circumstances according to the settings; (1) Set the overall scale of the electrolytic water hydrogen station to be much smaller than the electricity market, i.e., the electricity purchase quantity does not affect the electricity price and the electricity quantity is extremely abundant. (2) Set the electrolytic water hydrogen station to sign a medium and long-term electricity purchase agreement for a long cycle T each time, and supply hydrogen to the downstream for a short cycle t each time. Each long cycle consists of several short cycles. Set the electrolytic water hydrogen station to face a stable demand in the protocol state under the hydrogen sales environment, i.e., the hydrogen sales quantity is a constant value, the sales price is a constant value, and the total revenue is a constant value in the long cycle and the short cycle. (3) Set the electrolytic water hydrogen station to face two modes on the electricity purchase side: the medium and long-term market and the spot market. In the medium and long-term market, sign a contract to produce hydrogen in each short cycle within the long cycle scale with stable electricity supply, and set the hydrogen production quantity to A. In the spot market, purchase electricity to supply hydrogen in each short cycle according to the real-time electricity price, and set the hydrogen production quantity to B. (4) Set the electrolytic water hydrogen station to contain a hydrogen storage module for temporary hydrogen storage in a short cycle to be sold in the cycle or stored across short cycles. The hydrogen storage module provides more decision options for the (2) spot market electricity purchase, which can purchase more electricity to produce hydrogen and store it when the real-time electricity price in a certain short cycle is very low, supply hydrogen in the subsequent short cycle, and provide a quantity of C. (5) Based on the settings of (3) and (4), set the hydrogen sales quantity of the electrolytic water hydrogen station in the short cycle t to D (total quantity of the protocol) = A + B + C, where D is a constant value according to the setting, A is a constant value according to the concept of the medium and long-term contract, and should account for a high proportion. B + C determine the specific values of B and C according to the real-time market electricity price, future short cycle electricity price prediction, hydrogen storage sunk cost, and other comprehensive considerations. (6) Set the hydrogen storage quantity of the electrolytic water hydrogen station to be zero at the end of the long cycle T, so as to redevelop the medium and long-term market and real-time market strategy for electricity purchase and re-sign a hydrogen sales contract in the next long cycle. Based on the above settings, a set of operation strategies based on electrolytic water hydrogen station is proposed, including long period strategy and short period strategy two parts; The long period strategy part is as follows: In the nth long period, hydrogen production and hydrogen sales cycle operation is carried out, which meets
[0034] The operation strategy in the nth long period is as follows: Long period preparation: located at the beginning of the long period time scale, including two sub units: Information collection sub unit, used to collect the medium and long term electricity price and real time spot electricity price prediction in this long period, downstream hydrogen demand, and strategy summary (historical operation data) of the last long period, etc.
[0035] The long-term market contract unit price is collected on the upstream electricity purchase side , and the expected short-term spot market unit price is . The upper limit of the hydrogen storage value of the hydrogen storage module is determined on the downstream hydrogen purchase side , the hydrogen consumption of this long period is collected, the hydrogen unit price is collected, the hydrogen sales contract is signed, and the hydrogen station hydrogen sales revenue in this long period is obtained based on this
[0036] = (1) Finally, the strategy summary information of the nth-1 long period is collected .
[0037] Decision sub unit, based on the information collection content, the long period operation strategy decision is made, the electricity medium and long term market electricity purchase proportion is set (the remaining proportion is purchased in the electricity spot market to produce hydrogen), and the relevant contracts of electricity purchase and hydrogen sales are signed.
[0038] According to the obtained series of information, the proportion of hydrogen production by medium and long term market contract electricity purchase and hydrogen production by spot market electricity purchase is determined, that is = + (2) = η, = η(3) Among them, is the total amount of electricity purchased in the medium and long term contract market, is the total amount of electricity purchased in the spot market, and η is the electrolytic water hydrogen station electricity hydrogen conversion rate; is the hydrogen production based on the medium and long term market electricity, This is based on the hydrogen production volume from the medium- to long-term market electricity supply. The water electrolysis hydrogen production station signs a medium- to long-term market electricity purchase agreement based on this, at which point the total medium- to long-term market expenditure... ,for = (4) Long-term operation: This operation spans the entire long-term timescale and consists of several short-term segments: specifically, it comprises Y short-term segments. Within the m-th short-term segment, one segment generates and sells hydrogen based on power supply from medium- to long-term contracts, while the other segment develops and generates and sells hydrogen based on spot market electricity prices and the availability of hydrogen storage modules. This process satisfies…
[0039] The short-cycle strategy section consists of a fixed hydrogen supply section, a variable hydrogen supply section, and a summary analysis section, as detailed below: The operating strategy during the m-th short cycle is as follows: Fixed hydrogen supply: Based on the decisions of this long-term strategy, hydrogen will be produced and temporarily stored in each short-term cycle according to the electricity source provided by the medium- and long-term electricity market contracts. Hydrogen will then be supplied downstream within this short-term cycle, with the remaining proportion handled by the variable component. Within this short-term cycle, the electricity gain and hydrogen production of the fixed component must meet the following requirements: (5) (6) in, The amount of electricity gained by the fixed hydrogen supply portion during the m-th short period is given. Let m be the hydrogen production rate of the fixed hydrogen supply portion during the m-th short period. From the above, the hydrogen production cost of the fixed hydrogen supply portion during the m-th short period can be obtained. for (7) in, This represents the depreciation cost per unit of hydrogen production. Based on the above logical relationship, the following equation should be satisfied: (8) Variable hydrogen supply: Based on the constantly changing electricity prices in the spot market and the cross-cycle hydrogen storage volume of the previous short cycle, formulate the electricity purchase and hydrogen production strategy for this short cycle: If the decided purchase volume exceeds the remaining proportion (i.e., excluding the proportion accounted for by the medium and long-term electricity purchase agreement), the surplus will be put into the hydrogen storage module for cross-cycle storage (with additional storage depreciation costs); if the decided purchase volume is lower than the remaining proportion, the shortfall will be covered by the cross-cycle hydrogen storage expenditure of the previous short cycle. The hydrogen supply amount that the short-cycle variable hydrogen supply section should provide is... Should meet (9) Based on the current short-term spot market electricity price At the start of this short cycle, the remaining hydrogen in the hydrogen storage module and the expected short-term spot market electricity price Determine the amount of electricity purchased in the spot market during this short period. Corresponding hydrogen production at the station The unit hydrogen cost price of the hydrogen production unit in the spot market (electricity purchased for hydrogen production / short-cycle variable hydrogen supply). satisfy (10) (11) And determine the amount of hydrogen extracted (+) or replenished (-) by the hydrogen storage module during this short cycle. It should meet = (12) If the amount of hydrogen produced from electricity purchased in the spot market is less than the amount of hydrogen that should be supplied by the variable hydrogen supply, then hydrogen will be extracted from the hydrogen storage module. If the amount of hydrogen produced from electricity purchased in the spot market exceeds the amount of hydrogen that should be supplied by the variable hydrogen supply, then hydrogen will be replenished at the hydrogen storage module. It is negative; according to the rule that the amount of hydrogen extracted in each short cycle must not exceed the total hydrogen storage capacity in the current short cycle. Furthermore, the sum of the amount of hydrogen extracted and replenished in each short cycle and the total hydrogen storage capacity in the current short cycle must not exceed the total hydrogen capacity of the hydrogen storage module. ,due (13) (14) According to the requirements set in (6), the hydrogen storage portion should be cleared at the end of each long cycle to cope with the overall changes in the next long cycle, and there should be constraints. (15) Logically, the remaining hydrogen level in the hydrogen storage module should be [at the start of the next short cycle]. Should meet = (16) From the above, we can obtain the hydrogen production expenditure of the variable hydrogen supply portion within the m-th short period. for (17) in This refers to the depreciation cost per unit of hydrogen storage operation.
[0040] Short-cycle summary: Based on the hydrogen purchase and production strategy under the fixed and variable hydrogen supply strategies, as well as the hydrogen storage strategy allocation and sunk costs, the comprehensive cost of hydrogen production and the comprehensive revenue from hydrogen sales in this period are comprehensively calculated and analyzed to dynamically adjust the strategy of the variable hydrogen supply in the next short-cycle. Hydrogen production revenue in this short period is ,satisfy (18) The actual total expenditure for this short-cycle hydrogen production The sum of the fixed hydrogen supply section and the variable hydrogen supply section satisfies (19) Considering the sunk cost of hydrogen storage modules, the total expenditure on hydrogen production in a short period is not necessarily the actual operating cost for that period. Hydrogen is extracted from the hydrogen storage module (…). When >0), the additional sunk cost of hydrogen storage should be paid in this cycle; when replenishing hydrogen to the hydrogen storage module ( When <0), the electricity cost for the hydrogen supplied in this cycle should only be borne by the company for the current cycle. The average cost per unit of hydrogen in the hydrogen storage module is set to be [value missing] at the end of the m-th short cycle. ; when =0 or At this point, when the short cycle ends and no hydrogen remains in the hydrogen storage module, it should be set to... =0; when When ≠0, there is (20) Therefore, only the actual total cost of the variable hydrogen supply portion in this short-term scenario is considered. and the actual total cost of this short cycle For. When m=1, we have (twenty one) when Sometimes, (twenty two) (twenty three) Therefore, the total revenue from purchasing electricity to produce and sell hydrogen within this short period can be obtained. for - (twenty four) In the short term, each strategy should be formulated to meet the total return of the current short term. Maximum, i.e., the constraint is
[0041] Long-term summary: Located at the end of the long-term timescale, this section provides an overall summary and analysis of the total hydrogen sales revenue and hydrogen production costs for this long-term period, providing support for the strategy formulation of the next long-term period.
[0042] Overall cost of electricity purchase for hydrogen production over a long period The components of electricity purchase costs for medium- and long-term market contracts, electricity purchase costs for the spot market, operating depreciation costs, and hydrogen storage depreciation costs are to meet the requirements. = (25) Over a long period, each strategy should be formulated to satisfy the total long-term return. Maximum, i.e., the constraint is
[0043] The strategy summary for achieving the Nth longest period under the constraints is as follows: .
[0044] The implementation of this application will help accelerate the integration of the water electrolysis hydrogen production industry with the electricity market, and enhance the adaptability of hydrogen production stations to power system reforms. This invention reduces the electricity purchase costs of hydrogen production stations through market-based strategic bargaining, thereby improving their profitability and potentially lowering the price of green hydrogen, thus promoting its widespread application in downstream markets. Simultaneously, this strategy innovatively proposes a model combining long-term macro-control with short-term dynamic regulation, providing hydrogen production stations with maximum adjustment flexibility while ensuring stable downstream hydrogen demand.
[0045] This application provides an operation strategy system for a water electrolysis hydrogen production station, applied to the aforementioned strategy method, including: Data acquisition module: used to collect information related to electricity purchase and hydrogen sales, as well as historical operational data; Strategy Decision Module: Based on information from the data acquisition module, determine the medium- and long-term electricity purchase ratio and the spot market electricity purchase ratio; Execution control module: Executes hydrogen supply allocation strategy in each short cycle according to the instructions of the strategy decision module; Cost analysis module: used to calculate the current long-term hydrogen sales revenue and hydrogen production cost; Based on the statistical results, optimize the electricity purchase ratio and hydrogen storage strategy for the hydrogen storage module in the next long cycle.
[0046] The hydrogen storage module includes: Storage and Sale Unit: Used for sale during the current short-term period; Cross-cycle storage unit: used for redundant hydrogen production across cycles; Capacity monitoring unit: monitors hydrogen storage in real time and feeds it back to the strategy decision-making module; Cost calculation unit: Calculates sunk costs based on hydrogen storage cycle and call frequency.
[0047] The strategy decision-making module also includes: The medium- and long-term contract optimization submodule is used to match medium- and long-term power purchase agreements with the lowest electricity price. The spot market game theory submodule generates electricity purchase decisions based on a real-time electricity price forecasting model. The hydrogen storage scheduling submodule adjusts the hydrogen storage deployment strategy based on electricity price fluctuations and demand gaps.
[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A method for operating a water electrolysis hydrogen production station, characterized in that, Includes the following steps: The operation cycle is divided as follows: The entire hydrogen production station consists of X long cycles, with a long cycle of T, and a hydrogen storage module is installed in the hydrogen production station; the long cycle is composed of Y short cycles, with a short cycle of t. Long-term preparation: collecting information on electricity purchase and hydrogen sales data and historical operating data; Based on information collected on electricity purchase and hydrogen sales data and historical operation data, the proportion of electricity purchase in the medium and long term and the proportion of electricity purchase in the spot market are determined. Long-cycle operation: Based on the long-cycle preparation, the hydrogen supply and allocation strategy is executed in each short cycle; Long-term summary: Statistics on current long-term hydrogen sales revenue and hydrogen production costs; Based on the statistical results, optimize the electricity purchase ratio and hydrogen storage strategy for the hydrogen storage module in the next long cycle.
2. The method for operating a water electrolysis hydrogen production station according to claim 1, characterized in that, The data related to electricity purchase and hydrogen sales include: medium- and long-term electricity prices over a long period, real-time spot electricity price forecasts, and downstream hydrogen purchase demand.
3. The method for operating a water electrolysis hydrogen production station according to claim 1, characterized in that, Determine the proportion of medium- and long-term power purchase agreements and the proportion of spot market power purchase agreements, including signing medium- and long-term power purchase agreements and hydrogen sales agreements.
4. The method for operating a water electrolysis hydrogen production station according to claim 1, characterized in that, The hydrogen supply allocation strategy is implemented within each short cycle, including: Fixed hydrogen supply section: According to the medium and long-term power purchase agreement, power resources are allocated in a fixed proportion for hydrogen production, and the produced hydrogen is stored in the hydrogen storage module for sale for current short-term use; Variable hydrogen supply: The strategy of purchasing electricity to produce hydrogen is dynamically adjusted based on the real-time electricity price in the spot market and the remaining capacity of the hydrogen storage module; Short-term summary section: Statistics on current short-term hydrogen sales revenue and hydrogen production costs; Optimize the strategy for the variable hydrogen supply portion in the next short cycle based on statistical results.
5. The method for operating a water electrolysis hydrogen production station according to claim 4, characterized in that, The strategy for purchasing electricity to produce hydrogen will be dynamically adjusted based on real-time electricity prices in the spot market and the remaining capacity of hydrogen storage modules, including: If the real-time electricity price is lower than the preset threshold, the electricity purchased from the spot market will be increased and hydrogen will be produced and stored. If the real-time electricity price is higher than the preset threshold, the amount of electricity purchased from the spot market will be reduced and the amount of hydrogen stored across cycles in the hydrogen storage module will be used to supplement the hydrogen supply.
6. The method for operating a water electrolysis hydrogen production station according to claim 1, characterized in that, The proportion of medium- and long-term electricity purchases is greater than 60%.
7. The method for operating a water electrolysis hydrogen production station according to claim 5, characterized in that, The operation of the hydrogen storage module satisfies the following constraints; At the end of each long cycle T, the hydrogen storage module's hydrogen storage level is reset to zero. The hydrogen storage module can store more hydrogen across cycles than it can currently draw upon in a short cycle.
8. The method for operating a water electrolysis hydrogen production station according to claim 1, characterized in that, The statistics on current long-term hydrogen sales revenue and hydrogen production costs include: The total hydrogen sales revenue is determined based on the long-term hydrogen sales volume and unit price in the hydrogen sales agreement; The total cost of hydrogen production is determined based on the medium- and long-term power purchase volume and unit price in the medium- and long-term power purchase agreement, the power purchase volume and market electricity price in the spot market, the depreciation cost of hydrogen production, and the depreciation cost of hydrogen storage.
9. The method for operating a water electrolysis hydrogen production station according to claim 4, characterized in that, The current short-term hydrogen sales revenue and hydrogen production costs are statistically analyzed, including: Based on the total hydrogen sales revenue and the number of short cycles Y, determine the hydrogen sales revenue for short cycles; Based on the hydrogen production strategy of purchasing electricity and the hydrogen storage and allocation strategy of the fixed hydrogen supply section and the variable hydrogen supply section, the short-cycle hydrogen production cost is determined.
10. A system for operating strategies of a water electrolysis hydrogen production station, characterized in that, The method of the operating strategy described in any one of claims 1-9 includes: Data acquisition module: used to collect information related to electricity purchase and hydrogen sales, as well as historical operational data; Strategy Decision Module: Based on information from the data acquisition module, determine the medium- and long-term electricity purchase ratio and the spot market electricity purchase ratio; Execution control module: Executes hydrogen supply allocation strategy in each short cycle according to the instructions of the strategy decision module; Cost analysis module: used to calculate the current long-term hydrogen sales revenue and hydrogen production cost; Based on the statistical results, optimize the electricity purchase ratio and hydrogen storage strategy for the hydrogen storage module in the next long cycle.
11. The operation strategy system for an electrolytic water hydrogen production station according to claim 10, characterized in that, The hydrogen storage module includes: Storage and Sale Unit: Used for sale during the current short-term period; Cross-cycle storage unit: used for redundant hydrogen production across cycles; Capacity monitoring unit: monitors hydrogen storage in real time and feeds it back to the strategy decision-making module; Cost calculation unit: Calculates sunk costs based on hydrogen storage cycle and call frequency.
12. The operation strategy system for an electrolytic water hydrogen production station according to claim 10, characterized in that, The strategy decision-making module also includes: The medium- and long-term contract optimization submodule is used to match medium- and long-term power purchase agreements with the lowest electricity price. The spot market game theory submodule generates electricity purchase decisions based on a real-time electricity price forecasting model. The hydrogen storage scheduling submodule adjusts the hydrogen storage deployment strategy based on electricity price fluctuations and demand gaps.