Energy optimization configuration method and device for grid-connected wind-solar coupled hydrogen production system

Abstract

The invention provides an energy optimization configuration method and device for a grid-connected wind-solar coupled hydrogen production system, and the method comprises the steps: obtaining resource configuration demand information which is used for representing the subsystem capacity configuration demand of the wind-solar coupled hydrogen production system; according to the resource configuration demand information, utilizing a resource configuration model to obtain a resource configuration result; wherein the resource allocation model is firstly created based on the construction operation information and the constraint strategy of each subsystem of the wind-solar coupled hydrogen production system. According to the invention, the subsystem capacity configuration demand information of the wind-solar coupled hydrogen production system is obtained, and the resource configuration model created based on the construction operation information and constraint strategy of each subsystem of the wind-solar coupled hydrogen production system is further utilized to comprehensively consider each subsystem of the system; coordinated configuration of all subsystems of the wind-solar coupled hydrogen production system is ensured, and stable operation of the whole system is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of resource planning, and in particular to an energy optimization configuration method and device for a grid-connected wind-solar coupled hydrogen production system. Background Art

[0002] With the increasing development of renewable energy power generation, the field of power grid dispatching focuses on the development and utilization of renewable energy. By developing efficient and reliable advanced power generation and comprehensive utilization technologies of renewable energy such as hydropower, wind power, solar power, biomass energy, geothermal energy and ocean energy, the high-quality development and utilization of the renewable energy industry is supported. In addition to the inherent random volatility and large fluctuations, new energy power generation also has the characteristics of large-scale uncontrollability. Large-scale uncontrollable new energy grid connection has brought huge security challenges to the power grid. When the supply and demand are unbalanced, if the power grid cannot absorb the surplus electricity, it will lead to energy waste and economic losses; when there is a shortage of new energy power generation, if the power grid electricity price fluctuates greatly, it will lead to an increase in hydrogen production costs. Therefore, it is very important to effectively combine the power grid, new energy power generation and hydrogen production system, and the size and matching relationship of hydrogen production capacity, new energy power generation capacity and hydrogen storage capacity have a significant impact on the cost of hydrogen production. Therefore, how to achieve the optimal matching of new energy power generation, power grid system and hydrogen production equipment has become a major problem.

[0003] At present, the renewable energy hydrogen production system includes power generation, energy storage, hydrogen production, hydrogen storage and other modules. These modules involve multiple stakeholders, such as power companies, wind power plants, photovoltaic power plants, hydrogen producers, product consumers, etc., and stakeholders may have different constraints and goals, and need to coordinate with each other to make the planning meet all needs and achieve system profitability. Therefore, the renewable energy hydrogen production system is mainly a technical study of each module, lacking research on the system as a whole, and unable to objectively and reasonably describe the actual system situation. In addition, the impact of hydrogen prices and volatile on-grid electricity prices on revenue and supply demand is also ignored, resulting in unreasonable planning and excessively high production costs. Summary of the invention

[0004] The present invention provides a method and device for optimizing energy configuration of a grid-connected wind-solar coupled hydrogen production system, which is used to solve the defect in the prior art that new energy power generation, power grid system and hydrogen production equipment cannot be reasonably matched, and can coordinate the configuration of various subsystems of the wind-solar coupled hydrogen production system to achieve stable operation of the entire system.

[0005] The present invention provides an energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system, comprising: obtaining resource configuration demand information, the resource configuration demand information is used to characterize the subsystem capacity configuration demand of the wind-solar coupled hydrogen production system; according to the resource configuration demand information, using a resource configuration model, obtaining a resource configuration result; wherein the resource configuration model is first created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system.

[0006] According to a grid-connected wind-solar coupled hydrogen production system energy optimization configuration method provided by the present invention, the wind-solar coupled hydrogen production system includes a power generation subsystem, an energy storage subsystem, a hydrogen production subsystem and a hydrogen storage subsystem, the construction and operation information includes configuration parameter information and cost information of the corresponding subsystems, the constraint strategy includes inter-system constraints, power generation constraints, grid constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, the inter-system constraints are used to limit the relationship between the operating powers of the corresponding subsystems based on power supply demand, the power generation constraints are used to limit the relationship between the corresponding charging and discharging operating power and the power generation configuration capacity based on the configuration parameter information of the power generation subsystem, the grid constraints are used to limit the relationship between the power generation configuration capacity of the power generation subsystem and the charging and discharging operating power of the power generation subsystem and the hydrogen production configuration capacity of the hydrogen production subsystem and the hydrogen production operating power of the hydrogen production subsystem, the energy storage constraints are used to limit the prior target time based on the configuration parameter information of the energy storage subsystem The relationship between the energy storage capacity and the energy storage operating power and the energy storage capacity at the subsequent target moment, the hydrogen production constraint is used to limit the relationship between the corresponding hydrogen production operating power and the hydrogen storage flow and the first downstream hydrogen supply flow based on the configuration parameter information of the hydrogen production subsystem, the hydrogen storage constraint is used to limit the relationship between the hydrogen inventory, the hydrogen storage flow and the second downstream hydrogen supply flow at the previous target moment and the hydrogen inventory at the subsequent target moment based on the configuration parameter information of the hydrogen storage subsystem, and the hydrogen balance constraint is used to limit the relationship between the downstream hydrogen target consumption and the first downstream hydrogen supply flow and the second downstream hydrogen supply flow; before obtaining the resource configuration result based on the resource configuration demand information and the resource configuration model, it includes: constructing an initial configuration model based on the configuration parameter information and cost information of each subsystem; configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints to obtain the resource configuration model.

[0007] According to an energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system provided by the present invention, the power supply demand includes power supply and demand. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, the method includes: determining the power supply according to the charging and discharging operating power of the power generation subsystem, the power sold and the power purchased at each moment; determining the demand according to the energy storage operating power of the energy storage subsystem, the hydrogen production operating power of the hydrogen production subsystem and the preset power abandonment; obtaining the inter-system constraints according to the power supply and demand; The configuration parameter information of the power generation subsystem includes historical power generation data and charging and discharging operation power. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraint, power generation constraint, energy storage constraint, hydrogen production constraint, hydrogen storage constraint and hydrogen balance constraint, it also includes: obtaining the power generation constraint according to the charging and discharging operation power of the power generation subsystem and the power generation configuration capacity and historical power generation data; Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: obtaining a first power sales constraint relationship according to the preset power sales power ratio, power generation configuration capacity and power sales capacity; obtaining a second power sales constraint relationship based on the power sales power and power sales capacity at each moment; obtaining a third power sales constraint relationship according to the total power sales within the target time difference, the preset maximum power sales ratio and the power generation operating power at each moment within the target time difference; obtaining a first power purchase constraint relationship according to the preset power purchase and hydrogen production capacity coefficient, hydrogen production configuration capacity and power purchase capacity; obtaining a second power purchase constraint relationship based on the power purchase power and power purchase capacity at each moment; obtaining a third power purchase constraint relationship according to the total power purchase within the target time difference, the preset maximum power purchase ratio and the hydrogen storage operating power at each moment within the target time difference; obtaining a grid constraint according to the first power sales constraint relationship, the second power sales constraint relationship, the third power sales constraint relationship, the first power purchase constraint relationship, the second power purchase constraint relationship and the third power purchase constraint relationship; The configuration parameter information of the energy storage subsystem includes the upper limit of the charge-discharge ratio coefficient, the lower limit of the charge-discharge ratio coefficient, the upper limit of the energy storage capacity, the lower limit of the energy storage capacity, the energy storage configuration capacity, the energy storage rated power, the energy storage operating power, the energy storage capacity at each moment, and the operating power conversion coefficient. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints, and hydrogen balance constraints, it also includes: obtaining the first constraint relationship for the energy storage capacity at any moment according to the upper limit of the energy storage capacity, the lower limit of the energy storage capacity, and the energy storage configuration capacity; obtaining the first constraint relationship for the energy storage capacity at any moment according to the charge-discharge ratio The upper limit of the coefficient, the lower limit of the charge-discharge ratio coefficient and the rated power of the energy storage are used to obtain the second constraint relationship for constraining the charging and discharging operating power; the subsystem required energy at the previous target moment is obtained according to the energy storage capacity at the previous target moment, the energy storage operating power, the operating power conversion coefficient and the target time difference determined based on the previous target moment and the subsequent target moment; the energy storage constraint is obtained according to the energy storage capacity at the subsequent target moment, the subsystem required energy at the previous target moment, the energy storage operating power, the previously obtained energy storage charging efficiency and the target time difference, and in combination with the first constraint relationship and the second constraint relationship.

[0008] According to a grid-connected wind-solar coupled hydrogen production system energy optimization configuration method provided by the present invention, the configuration parameter information of the hydrogen production subsystem includes the hydrogen production energy conversion coefficient, the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules, the hydrogen production operating power, the upper limit of the hydrogen production load power, the lower limit of the hydrogen production load power, the hydrogen storage flow rate and the first downstream hydrogen supply flow rate, and the configuration parameter information of the hydrogen storage subsystem includes the hydrogen inventory at each moment, the hydrogen storage flow rate, the second downstream hydrogen supply flow rate, the hydrogen storage configuration capacity, the upper limit of the hydrogen inventory ratio and the lower limit of the hydrogen inventory ratio; before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: determining the first lower limit according to the minimum operating unit rated power of the hydrogen production module and the lower limit of the hydrogen production load power, and determining the first upper limit according to the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules and the upper limit of the hydrogen production load power; determining the first upper limit according to the first lower limit, the first upper limit and the hydrogen production According to the hydrogen operating power, the third constraint relationship is obtained; according to the hydrogen storage flow rate and the first downstream hydrogen supply flow rate, the hydrogen production demand is determined; according to the hydrogen production energy conversion coefficient, the hydrogen production demand and the hydrogen production operating power, in combination with the third constraint relationship, the hydrogen production constraint is obtained; according to the lower limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity, the second lower limit is obtained, and according to the upper limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity, the second upper limit is obtained; according to the second lower limit, the second upper limit and the hydrogen inventory at the corresponding time, the fourth constraint relationship is obtained; according to the hydrogen inventory at the previous target time, the hydrogen storage flow at the corresponding time, the second downstream hydrogen supply flow at the corresponding time and the target time difference determined based on the previous target time and the subsequent target time, the hydrogen storage demand at the previous target time is obtained; according to the hydrogen storage demand at the previous target time and the hydrogen inventory at the subsequent target time, in combination with the fourth constraint relationship, the hydrogen storage constraint is obtained; according to the first downstream hydrogen supply flow rate, the second downstream hydrogen supply flow rate and the downstream hydrogen target consumption, the hydrogen balance constraint is obtained.

[0009] According to a method for optimizing energy configuration of a grid-connected wind-solar coupled hydrogen production system provided by the present invention, cost information includes the unit cost of each subsystem, the operating cost of each subsystem, the electricity selling price at each time, the electricity purchasing price at each time, the grid capacity electricity price at each time, the grid electricity conversion coefficient, the hydrogen price at each time, the recovery cost information, the equipment replacement cost information and the tax fee information; based on the configuration parameter information and cost information of each subsystem, an initial configuration model is constructed, including: according to the power generation configuration capacity, the hydrogen production configuration capacity, the hydrogen storage configuration capacity and the energy storage configuration capacity, combined with the unit cost of each subsystem, a configuration root model for the construction period is constructed; According to the first downstream hydrogen supply flow, the second downstream hydrogen supply flow, the hydrogen price at the corresponding time, the electricity sales power at each time and the electricity sales price at each time, an operation period income sub-model is constructed; according to the operating costs of each subsystem, power generation configuration capacity, hydrogen production configuration capacity, hydrogen storage configuration capacity, energy storage configuration capacity, electricity purchase power at each time, electricity purchase price at each time, grid capacity electricity price at each time and grid electricity conversion coefficient, an operation period cost sub-model is constructed; according to the construction period configuration sub-model, operation period income sub-model, operation period cost sub-model, recovery cost information, equipment replacement cost information and tax fee information, an initial configuration model is obtained.

[0010] According to a method for optimizing energy configuration of a grid-connected wind-solar coupled hydrogen production system provided by the present invention, resource configuration requirement information includes power generation configuration capacity and energy storage configuration capacity, and resource configuration results include hydrogen production configuration capacity and hydrogen storage configuration capacity; or, resource configuration requirement information includes hydrogen production configuration capacity and hydrogen storage configuration capacity, and resource configuration results include power generation configuration capacity and energy storage configuration capacity; according to the resource configuration requirement information, a resource configuration result is obtained by using a resource configuration model, including: inputting the resource configuration requirement information into the resource configuration model, and obtaining the resource configuration result by using a preset optimization algorithm; determining whether the deviation between the resource configuration result and the preset configuration result meets the preset deviation range, and if so, outputting the resource configuration result, otherwise re-inputting the resource configuration requirement information into the resource configuration model, and determining the corresponding resource configuration result by using a preset optimization algorithm, until the deviation between the obtained resource configuration result and the preset configuration result meets the preset deviation range.

[0011] According to a grid-connected wind-solar coupled hydrogen production system energy optimization configuration method provided by the present invention, after obtaining the resource configuration result, it includes: obtaining the target economic indicator according to the resource configuration demand information and the resource configuration result; based on the target economic indicator meeting the preset standard, configuring each subsystem of the wind-solar coupled hydrogen production system according to the resource configuration demand information and the resource configuration result.

[0012] The present invention also provides an energy optimization configuration device for a grid-connected wind-solar coupled hydrogen production system, comprising: an information acquisition module, which acquires resource configuration demand information, and the resource configuration demand information is used to characterize the subsystem capacity configuration demand of the wind-solar coupled hydrogen production system; a resource configuration module, which obtains resource configuration results based on the resource configuration demand information and a resource configuration model; wherein the resource configuration model is first created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system.

[0013] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for optimizing the configuration of energy for a grid-connected wind-solar coupled hydrogen production system as described in any one of the above-mentioned methods is implemented.

[0014] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system as described in any one of the above.

[0015] The present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements the energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system as described in any one of the above.

[0016] The energy optimization configuration method and device for the grid-connected wind-solar coupled hydrogen production system provided by the present invention obtain the subsystem capacity configuration demand information of the wind-solar coupled hydrogen production system to focus on the resource configuration elements required for the actual operation of the system, avoiding the interference of irrelevant information, so that subsequent configuration work can be carried out closely around the core needs, and further use the resource configuration model previously created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system to comprehensively consider each subsystem, thereby outputting a more practical and more operational resource configuration result, which helps to achieve coordinated configuration of all links of the overall system, ensure that the system can be reasonably scheduled and allocated, and achieve stable operation of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a flow chart of the energy optimization configuration method of the grid-connected wind-solar coupled hydrogen production system provided by the present invention; Figure 2It is a structural schematic diagram of an energy optimization configuration device for a grid-connected wind-solar coupled hydrogen production system provided by the present invention; Figure 3 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Figure 1 : is a flow chart of the energy optimization configuration method of the grid-connected wind-solar coupled hydrogen production system provided by the present invention, such as Figure 1 As shown, the method includes: S11, obtaining resource configuration requirement information, where the resource configuration requirement information is used to characterize the subsystem capacity configuration requirement of the wind-solar coupled hydrogen production system; S12, according to the resource allocation demand information, using the resource allocation model, obtain the resource allocation result; wherein the resource allocation model is first created based on the construction and operation information and constraint strategy of each subsystem of the wind-solar coupled hydrogen production system.

[0021] It should be noted that the step number "S1N" in this specification does not represent the sequence of the energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system. The energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system of the present invention is described in detail below.

[0022] Step S11, obtaining resource configuration requirement information, where the resource configuration requirement information is used to characterize the subsystem capacity configuration requirement of the wind-solar coupled hydrogen production system.

[0023] It should be added that the resource allocation demand information includes the power generation configuration capacity and the energy storage configuration capacity, and the resource allocation results include the hydrogen production configuration capacity and the hydrogen storage configuration capacity; or, the resource allocation demand information includes the hydrogen production configuration capacity and the hydrogen storage configuration capacity, and the resource allocation results include the power generation configuration capacity and the energy storage configuration capacity. It should be noted that in addition to the above content, the resource allocation results also include but are not limited to the power purchased, the power sold, the amount of hydrogen sold to downstream, and the amount of abandoned electricity.

[0024] In addition, the wind-solar coupled hydrogen production system includes a power generation subsystem, an energy storage subsystem, a hydrogen production subsystem and a hydrogen storage subsystem. The power generation subsystem is used to generate electricity, and sell the generated electricity to the power grid, supply power to the hydrogen production subsystem and / or store it in the energy storage subsystem. The hydrogen production subsystem needs to consider whether it needs to purchase electricity from the power grid and produce hydrogen on the basis of the power supply based on the electricity provided by the power generation subsystem, so as to store the produced hydrogen in the hydrogen storage subsystem and / or sell hydrogen to downstream. Therefore, it is necessary to reasonably configure the capacity of each subsystem to ensure the stable operation of the system while ensuring that the system can reasonably dispatch and allocate energy.

[0025] Furthermore, the power generation subsystem may include at least one, and the specific power generation type may be wind power generation, photovoltaic power generation, etc., which is not further limited here.

[0026] It is worth noting that the wind-solar coupled hydrogen production system needs to model the power generation subsystem, energy storage subsystem, hydrogen production subsystem and hydrogen storage subsystem separately, and connect the subsystems with the power and hydrogen flow directions. In order to achieve the purpose of stable hydrogen production, it is stipulated that the output of hydrogen is the same within a certain time interval.

[0027] Step S12, according to the resource configuration demand information, using the resource configuration model, obtains the resource configuration result; wherein the resource configuration model is previously created based on the construction and operation information and constraint strategy of each subsystem of the wind-solar coupled hydrogen production system.

[0028] In this embodiment, a resource configuration result is obtained based on resource configuration requirement information using a resource configuration model, including: inputting the resource configuration requirement information into the resource configuration model, and obtaining the resource configuration result using a preset optimization algorithm; determining whether a deviation between the resource configuration result and the preset configuration result meets a preset deviation range, and if so, outputting the resource configuration result; otherwise, re-inputting the resource configuration requirement information into the resource configuration model, and determining the corresponding resource configuration result using a preset optimization algorithm, until the deviation between the obtained resource configuration result and the preset configuration result meets the preset deviation range.

[0029] It should be noted that the preset configuration result can be configured based on theoretical values ​​or prior experience, and the preset deviation range can be set based on an acceptable error range compared to the preset configuration result, which is not further explained here.

[0030] In addition, the preset optimization algorithm can be selected based on the actual design requirements or the optimization software with the actual usage rights obtained, such as the SCIP optimization software called by the toolkit Pulp in Python, which is not further limited here.

[0031] In an optional embodiment, the construction and operation information includes configuration parameter information and cost information of the corresponding subsystem, and the constraint strategy includes inter-system constraints, power generation constraints, grid constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints. Before obtaining the resource configuration result based on the resource configuration demand information and using the resource configuration model, it includes: constructing an initial configuration model based on the configuration parameter information and cost information of each subsystem; configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints to obtain the resource configuration model.

[0032] It should be added that the inter-system constraints are used to limit the relationship between the operating powers of the corresponding subsystems based on the power supply demand, the power generation constraints are used to limit the relationship between the corresponding charging and discharging operating power and the power generation configuration capacity based on the configuration parameter information of the power generation subsystem, the grid constraints are used to limit the relationship between the power generation configuration capacity of the power generation subsystem and the charging and discharging operating power of the power generation subsystem and the hydrogen production configuration capacity of the hydrogen production subsystem and the hydrogen production operating power of the hydrogen production subsystem, the energy storage constraints are used to limit the relationship between the energy storage capacity and the energy storage operating power at the prior target moment and the energy storage capacity at the subsequent target moment based on the configuration parameter information of the energy storage subsystem, the hydrogen production constraints are used to limit the relationship between the corresponding hydrogen production operating power and the hydrogen storage flow and the first downstream hydrogen supply flow based on the configuration parameter information of the hydrogen production subsystem, the hydrogen storage constraints are used to limit the relationship between the hydrogen inventory, the hydrogen storage flow and the second downstream hydrogen supply flow at the prior target moment and the hydrogen inventory at the subsequent target moment based on the configuration parameter information of the hydrogen storage subsystem, and the hydrogen balance constraints are used to limit the relationship between the downstream hydrogen target consumption and the first downstream hydrogen supply flow and the second downstream hydrogen supply flow.

[0033] Specifically, the power supply demand includes power supply and demand. Before configuring the constraint strategy for the initial configuration model according to inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it includes: determining the power supply according to the charging and discharging operating power of the power generation subsystem, the power sold and purchased at each moment; determining the demand according to the energy storage operating power of the energy storage subsystem, the hydrogen production operating power of the hydrogen production subsystem and the preset power abandonment power; and obtaining the inter-system constraints based on the power supply and demand.

[0034] Furthermore, the inter-system constraints are expressed as: in, Indicates the charging and discharging operating power of the electronic system at time t (MW); represents the electricity sold at time t (MW); represents the power purchased at time t (MW); represents the power abandoned at time t (MW); represents the energy storage operating power of the energy storage subsystem at time t (MW); It should be noted that the power abandonment can be ignored in this method, but whether the corresponding resource allocation result is reasonable can be determined based on the final abandoned power.

[0035] The configuration parameter information of the power generation subsystem includes historical power generation data and charging and discharging operating power. Before configuring the constraint strategy for the initial configuration model according to inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: obtaining power generation constraints according to the charging and discharging operating power of the power generation subsystem, the power generation configuration capacity and the historical power generation data.

[0036] Furthermore, the power generation constraint is expressed as: in, Indicates the charging and discharging operating power of the electronic system at time t (MW); represents the power generation configuration capacity (MW); represents the normalized power generation power at time t based on historical power generation data (MW); represents the power generation power at time t based on historical power generation data (MW); Indicates the historical power generation capacity configuration (MW) corresponding to the historical power generation data. It should be added that if the power generation subsystem includes at least two, then is the sum of the generation configuration capacities of the two generation subsystems, and It is also the sum of the historical power generation capacity of all power generation subsystems. In addition, the historical power generation data includes the power generation corresponding to each moment, and the historical power generation data can be in the form of icons or other data forms, which are not further limited here.

[0037] Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: obtaining a first power sales constraint relationship according to the preset power sales power ratio, power generation configuration capacity and power sales capacity; obtaining a second power sales constraint relationship based on the power sales power and power sales capacity at each moment; obtaining a third power sales constraint relationship according to the total power sales within the target time difference, the preset maximum power sales ratio and the power generation operating power at each moment within the target time difference; obtaining a first power purchase constraint relationship according to the preset power purchase and hydrogen production capacity coefficient, hydrogen production configuration capacity and power purchase capacity; obtaining a second power purchase constraint relationship based on the power purchase power and power purchase capacity at each moment; obtaining a third power purchase constraint relationship according to the total power purchase within the target time difference, the preset maximum power purchase ratio and the hydrogen storage operating power at each moment within the target time difference; obtaining power grid constraints according to the first power sales constraint relationship, the second power sales constraint relationship, the third power sales constraint relationship, the first power purchase constraint relationship, the second power purchase constraint relationship and the third power purchase constraint relationship.

[0038] Furthermore, the grid constraint is expressed as: The first power sales constraint relationship is expressed as: in, Indicates the electricity sales capacity (MW); Indicates the preset power sales ratio; Indicates the power generation configuration capacity (MW).

[0039] The second power sales constraint relationship is expressed as: in, represents the electricity sold at time t (MW); Indicates the electricity sales capacity (MW).

[0040] The third power sales constraint relationship is: in, It should be noted that Indicates the total amount of electricity sold within the target time (MWh); Indicates the preset maximum proportion of electricity sales; Indicates the charging and discharging operating power of the electronic system at time t (MW); Indicates the target time difference (h), which can be set based on actual design requirements; Represents the purchased electricity power at time t (MW).

[0041] The first power purchase constraint relationship is expressed as: in, Indicates the purchased electricity capacity (MW); Indicates the preset power purchase ratio; Indicates the hydrogen production configuration capacity (MW).

[0042] The second power purchase constraint relationship is expressed as: in, represents the power purchased at time t (MW); Indicates the purchased electricity capacity (MW).

[0043] The third power purchase constraint relationship is expressed as: in, It should be noted that Indicates the total amount of electricity purchased within the target time (MWh); Indicates the preset maximum proportion of electricity purchase; represents the hydrogen production operating power of the hydrogen production subsystem at time t (MW); represents the target time difference (h); Represents the purchased electricity power at time t (MW).

[0044] The configuration parameter information of the energy storage subsystem includes the upper limit of the charge-discharge ratio coefficient, the lower limit of the charge-discharge ratio coefficient, the upper limit of the energy storage capacity, the lower limit of the energy storage capacity, the energy storage configuration capacity, the energy storage rated power, the energy storage operating power, the energy storage capacity at each moment, and the operating power conversion coefficient. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints, and hydrogen balance constraints, it also includes: obtaining the first constraint relationship for the energy storage capacity at any moment according to the upper limit of the energy storage capacity, the lower limit of the energy storage capacity, and the energy storage configuration capacity; obtaining the first constraint relationship for the energy storage capacity at any moment according to the charge-discharge ratio The upper limit of the coefficient, the lower limit of the charge-discharge ratio coefficient and the rated power of the energy storage are used to obtain the second constraint relationship for constraining the charging and discharging operating power; the subsystem required energy at the previous target moment is obtained according to the energy storage capacity at the previous target moment, the energy storage operating power, the operating power conversion coefficient and the target time difference determined based on the previous target moment and the subsequent target moment; the energy storage constraint is obtained according to the energy storage capacity at the subsequent target moment, the subsystem required energy at the previous target moment, the energy storage operating power, the previously obtained energy storage charging efficiency and the target time difference, and in combination with the first constraint relationship and the second constraint relationship.

[0045] Furthermore, the energy storage constraint is expressed as: Among them, the second constraint relationship is: The first constraint is: It should be noted that represents the energy storage capacity at the post-target time t+1 (MWh); represents the energy storage capacity at the previous target time t (MWh); represents the energy storage operating power of the energy storage subsystem at time t (MW); Indicates the energy storage charging efficiency; represents the target time difference (h); Indicates the lower limit of the charge and discharge ratio coefficient; Indicates the upper limit of the charge and discharge ratio coefficient; Indicates the rated power of energy storage (MW); represents the energy storage configuration capacity (MW); Indicates the upper limit of energy storage capacity; Indicates the lower limit of energy storage capacity.

[0046] The configuration parameter information of the hydrogen production subsystem includes the hydrogen production energy conversion coefficient, the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules, the hydrogen production operating power, the upper limit of the hydrogen production load power, the lower limit of the hydrogen production load power, the hydrogen storage flow rate and the first downstream hydrogen supply flow rate. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: determining the first lower limit according to the minimum operating unit rated power of the hydrogen production module and the lower limit of the hydrogen production load power, and determining the first upper limit according to the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules and the upper limit of the hydrogen production load power; obtaining the third constraint relationship according to the first lower limit, the first upper limit and the hydrogen production operating power of the library; determining the hydrogen production demand according to the hydrogen storage flow rate and the first downstream hydrogen supply flow rate; and obtaining the hydrogen production constraint according to the hydrogen production energy conversion coefficient, the hydrogen production demand and the hydrogen production operating power in combination with the third constraint relationship.

[0047] Furthermore, the hydrogen production constraint is expressed as: Among them, the third constraint relationship is: It should be noted that represents the hydrogen production operating power of the hydrogen production subsystem at time t (MW); Indicates the energy conversion coefficient of hydrogen production (kWh / Nm³); Indicates the hydrogen storage flow rate at time t (Nm³ / h); Indicates the first downstream hydrogen supply flow rate at time t (Nm³ / h); Indicates the lower limit of hydrogen production load power; Indicates the upper limit of hydrogen production load power; Indicates the minimum operating unit rated power of the hydrogen production module (MW); Indicates the number of hydrogen production modules. It should be added that when an electrolyzer is used to produce hydrogen, the hydrogen production module is the electrolyzer.

[0048] The configuration parameter information of the hydrogen storage subsystem includes the hydrogen inventory, hydrogen storage flow, second downstream hydrogen supply flow, hydrogen storage configuration capacity, upper limit of hydrogen inventory ratio and lower limit of hydrogen inventory ratio at each moment. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: obtaining the second lower limit according to the lower limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity, and obtaining the second upper limit according to the upper limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity; obtaining the fourth constraint relationship according to the second lower limit, the second upper limit and the hydrogen inventory at the corresponding moment; obtaining the hydrogen storage demand at the prior target moment according to the hydrogen inventory at the prior target moment, the hydrogen storage flow at the corresponding moment, the second downstream hydrogen supply flow at the corresponding moment and the target time difference determined based on the prior target moment and the subsequent target moment; obtaining the hydrogen storage constraint according to the hydrogen storage demand at the prior target moment and the hydrogen inventory at the subsequent target moment in combination with the fourth constraint relationship.

[0049] Furthermore, the hydrogen storage constraint is expressed as: Among them, the fourth constraint relationship is in, Indicates the hydrogen inventory at the post-target time t+1 (Nm 3 ); Indicates the hydrogen inventory at the previous target time t (Nm 3 ); Indicates the hydrogen storage flow rate at time t (Nm 3 / h); Indicates the second downstream hydrogen supply flow rate at time t (Nm 3 / h); represents the target time difference (h); Indicates the lower limit of hydrogen inventory ratio; Indicates the upper limit of hydrogen inventory ratio; Indicates the hydrogen storage configuration capacity (MW).

[0050] Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, it also includes: obtaining the hydrogen balance constraint according to the first downstream hydrogen supply flow rate, the second downstream hydrogen supply flow rate and the target consumption of downstream hydrogen.

[0051] Furthermore, the hydrogen balance constraint is expressed as: in, Indicates the target consumption of hydrogen at time t (Nm 3 ); Represents the first downstream hydrogen supply flow rate at time t (Nm 3 / h); represents the second downstream hydrogen supply flow rate at time t (Nm 3 / h).

[0052] In addition, the cost information includes the unit construction cost of each subsystem, the operating cost of each subsystem, the electricity sales price at each time, the electricity purchase price at each time, the grid capacity electricity price at each time, the grid capacity electricity price at each time, the grid electricity conversion coefficient, the hydrogen price at each time, the recovery cost information, the equipment replacement cost information and the tax fee information.

[0053] Accordingly, based on the configuration parameter information and cost information of each subsystem, an initial configuration model is constructed, including: constructing a construction period configuration sub-model according to the power generation configuration capacity, hydrogen production configuration capacity, hydrogen storage configuration capacity and energy storage configuration capacity, combined with the unit cost of each subsystem; constructing an operation period income sub-model according to the first downstream hydrogen supply flow, the second downstream hydrogen supply flow, the hydrogen price at the corresponding time, the power sold at each time and the power sold price at each time; constructing an operation period cost sub-model according to the operating cost of each subsystem, the power generation configuration capacity, the hydrogen production configuration capacity, the hydrogen storage configuration capacity, the energy storage configuration capacity, the power purchased at each time, the power purchased at each time, the grid capacity electricity price and the grid electricity conversion coefficient at each time; and obtaining the initial configuration model according to the construction period configuration sub-model, the operation period income sub-model, the operation period cost sub-model, the recovery cost information, the equipment replacement cost information and the tax fee information.

[0054] It should be added that the initial configuration model is expressed as: in, represents the cash flow of construction cost in year y (ten thousand yuan); represents the operating cost cash flow in the yth year (10,000 yuan), which can be obtained from the operating period income sub-model, operating period cost sub-model, recovery cost information, equipment replacement cost information and tax expense information; y represents the year; r represents the discount rate; A time set representing the construction period; Indicates the end year of the construction period; A time collection representing the operation period.

[0055] Furthermore, the construction period configuration sub-model is expressed as: in, It should be noted that represents the investment proportion in each year of the construction period; y represents the year; represents the initial investment (ten thousand yuan); represents the equipment cost (ten thousand yuan); Indicates the construction cost (ten thousand yuan); Indicates the unit cost of the energy storage subsystem (10,000 yuan / MWh); represents the energy storage configuration capacity (MW); Unit cost of hydrogen production subsystem (10,000 yuan / MW); Indicates the hydrogen production configuration capacity (MW); Indicates the unit cost of the hydrogen storage subsystem (10,000 yuan / Nm 3 ); Indicates the hydrogen storage configuration capacity (Nm 3 ); Indicates the unit cost of the power generation system (10,000 yuan / MWh); Indicates the power generation configuration capacity (MW).

[0056] In addition, the operation period sub-model is expressed as: in, represents the operating period income sub-model; represents the operating period cost sub-model; represents the recovered fixed assets in operation in year y (ten thousand yuan), i.e., the recovery cost information; Indicates the equipment replacement cost information, represents the investment in replacing the electrolytic cell (ten thousand yuan), Indicates the information of electrolytic cell replacement in year y; represents the value-added tax in year y (ten thousand yuan), represents the corporate income tax in year y (ten thousand yuan), represents the business tax in year y (ten thousand yuan), It can be obtained based on tax expense information.

[0057] Furthermore, the operating period income sub-model represents Among them, among them, represents the cost of selling hydrogen within the target time difference (ten thousand yuan); Indicates the electricity sales revenue within the target time difference (ten thousand yuan); Indicates the price of hydrogen (ten thousand yuan / ton); Represents the first downstream hydrogen supply flow rate at time t (Nm 3 / h); represents the second downstream hydrogen supply flow rate at time t (Nm 3 / h); represents the electricity price at time t; Represents the electricity sold at time t.

[0058] In addition, the operating cost sub-model during the operation period Including equipment operating costs and electricity costs, It can also include wages, insurance, water charges, etc., which can be set according to actual design requirements. The operating cost of the equipment is expressed as: The electricity cost is expressed as: It should be noted that It represents the unit cost of operating the power generation system (ten thousand yuan / MW); represents the power generation configuration capacity (MW); The electricity purchase cost within the target time difference (ten thousand yuan); represents the unit cost of operating the energy storage subsystem (10,000 yuan / MWh); represents the energy storage configuration capacity (MWh); represents the unit cost of operating the hydrogen production subsystem (10,000 yuan / MW); Indicates the hydrogen production configuration capacity (MW); represents the unit cost of hydrogen storage subsystem operation (10,000 yuan / Nm 3 ); Indicates the hydrogen storage configuration capacity (Nm 3 ); represents the electricity purchase price at time t (10,000 yuan / MWh); represents the power purchased at time t; Indicates the purchased electricity capacity (MW); represents the grid capacity electricity price (yuan / kW·month); Represents the power conversion coefficient of the power grid.

[0059] In an optional embodiment, after obtaining the resource configuration result, it includes: obtaining the target economic indicator according to the resource configuration demand information and the resource configuration result; based on the target economic indicator meeting the preset standard, configuring each subsystem of the wind-solar coupled hydrogen production system according to the resource configuration demand information and the resource configuration result.

[0060] Further, after obtaining the target economic indicator, it includes: based on the target economic indicator not meeting the preset standard, re-executing steps S11-S12 of the method.

[0061] It should be supplemented that the target economic indicator can be configured according to actual design requirements, for example, it can be at least one of the net present value (NPV), return on investment (ROI) and levelized cost of energy (LCOH), and the preset standard can be configured according to actual design requirements, such as assigning corresponding weights to the net present value (NPV), return on investment (ROI) and levelized cost of energy (LCOH) respectively and summing them up, so as to judge whether it meets the preset numerical range according to the final result; or, according to the design requirements, select the most concerned one of the target economic indicators and judge whether it meets expectations, which is not further limited here.

[0062] To sum up, the embodiment of the present invention obtains the subsystem capacity configuration requirement information of the wind-solar coupled hydrogen production system to focus on the resource configuration elements required for the actual operation of the system, avoiding the interference of irrelevant information, so that subsequent configuration work can be carried out closely around the core needs, and further utilizes the resource configuration model previously created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system to comprehensively consider each subsystem, thereby outputting a more practical and operational resource configuration result, which helps to achieve coordinated configuration of all aspects of the overall system, ensure that the system can be reasonably scheduled and allocated, and achieve stable operation of the entire system.

[0063] The energy optimization configuration device for the grid-connected wind-solar coupled hydrogen production system provided by the present invention is described below. The energy optimization configuration device for the grid-connected wind-solar coupled hydrogen production system described below and the energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system described above can be referenced to each other.

[0064] Figure 2 The schematic diagram of the structure of a grid-connected wind-solar coupled hydrogen production system energy optimization configuration device is shown, the device comprising: An information acquisition module 21 is used to acquire resource configuration requirement information, where the resource configuration requirement information is used to characterize the subsystem capacity configuration requirement of the wind-solar coupled hydrogen production system; The resource configuration module 22 obtains the resource configuration result by using the resource configuration model according to the resource configuration demand information; wherein the resource configuration model is previously created based on the construction and operation information and constraint strategy of each subsystem of the wind-solar coupled hydrogen production system.

[0065] In this embodiment, the resource configuration module 22 includes: a resource configuration unit, which inputs the resource configuration requirement information into the resource configuration model, and uses a preset optimization algorithm to obtain a resource configuration result; a configuration optimization unit, which determines whether the deviation between the resource configuration result and the preset configuration result meets the preset deviation range. If so, the resource configuration result is output; otherwise, the resource configuration requirement information is re-input into the resource configuration model, and the preset optimization algorithm is used to determine the corresponding resource configuration result until the deviation between the obtained resource configuration result and the preset configuration result meets the preset deviation range.

[0066] In an optional embodiment, the device also includes: a model construction module, which constructs an initial configuration model based on the configuration parameter information and cost information of each subsystem before obtaining the resource configuration result based on the resource configuration requirement information and the resource configuration model; a constraint association module, which configures the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints to obtain the resource configuration model.

[0067] Specifically, the power supply demand includes power supply and demand. The device also includes: a constraint configuration module for configuring inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints.

[0068] Furthermore, the constraint configuration module includes: a power supply constraint configuration unit, which determines the power supply according to the charging and discharging operating power, the power selling power and the power purchasing power of the power generation subsystem; a demand constraint configuration unit, which determines the demand according to the energy storage operating power of the energy storage subsystem, the hydrogen production operating power of the hydrogen production subsystem and the preset power abandonment power; an inter-system constraint configuration unit, which obtains the inter-system constraints according to the power supply and demand.

[0069] The configuration parameter information of the power generation subsystem includes historical power generation data and charging and discharging operating power. The constraint configuration module also includes: a power generation constraint configuration unit, which obtains power generation constraints based on the charging and discharging operating power of the power generation subsystem, the power generation configuration capacity and the historical power generation data before configuring the constraint strategy for the initial configuration model based on inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints.

[0070] The constraint configuration module also includes: a first constraint configuration unit, which obtains a first power sales constraint relationship according to a preset power sales power ratio, power generation configuration capacity and power sales capacity before configuring a constraint strategy for the initial configuration model according to inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints; a second constraint configuration unit, which obtains a second power sales constraint relationship based on the power sales power and power sales capacity at each moment; a third constraint configuration unit, which obtains a third power sales constraint relationship according to the total power sales within the target time difference, the preset maximum power sales ratio and the power generation operation power at each moment within the target time difference; and a fourth constraint configuration unit, which obtains a third power sales constraint relationship according to the total power sales within the target time difference, the preset maximum power sales ratio and the power generation operation power at each moment within the target time difference. The configuration unit obtains a first power purchase constraint relationship according to the preset power purchase and hydrogen production capacity coefficient, the hydrogen production configuration capacity and the power purchase capacity; the fifth constraint configuration unit obtains a second power purchase constraint relationship based on the power purchase power and the power purchase capacity at each moment; the sixth constraint configuration unit obtains a third power purchase constraint relationship according to the total power purchase amount within the target time difference, the preset maximum proportion of the power purchase amount, and the hydrogen storage operating power at each moment within the target time difference; the power grid constraint configuration unit obtains the power grid constraint according to the first power sales constraint relationship, the second power sales constraint relationship, the third power sales constraint relationship, the first power purchase constraint relationship, the second power purchase constraint relationship and the third power purchase constraint relationship.

[0071] The configuration parameter information of the energy storage subsystem includes the upper limit of the charge and discharge ratio coefficient, the lower limit of the charge and discharge ratio coefficient, the upper limit of the energy storage capacity, the lower limit of the energy storage capacity, the energy storage configuration capacity, the energy storage rated power, the energy storage operating power, the energy storage capacity at each moment and the operating power conversion coefficient. The constraint configuration module also includes: the seventh constraint configuration unit, before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, obtains the energy storage capacity for any moment according to the upper limit of the energy storage capacity, the lower limit of the energy storage capacity and the energy storage configuration capacity. The first constraint relationship of the quantity; the eighth constraint configuration unit, according to the upper limit of the charge-discharge ratio coefficient, the lower limit of the charge-discharge ratio coefficient and the energy storage rated power, obtains the second constraint relationship for constraining the charge-discharge operating power; the prior energy acquisition unit, according to the energy storage capacity at the prior target moment, the energy storage operating power, the operating power conversion coefficient and the target time difference determined based on the prior target moment and the subsequent target moment, obtains the subsystem required energy at the prior target moment; the energy storage constraint configuration unit, according to the energy storage capacity at the subsequent target moment, the subsystem required energy at the prior target moment, the energy storage operating power, and the target time difference, and combining the first constraint relationship and the second constraint relationship to obtain the energy storage constraint.

[0072] The configuration parameter information of the hydrogen production subsystem includes the hydrogen production energy conversion coefficient, the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules, the hydrogen production operating power, the upper limit of the hydrogen production load power, the lower limit of the hydrogen production load power, the hydrogen storage flow rate and the first downstream hydrogen supply flow rate. The constraint configuration module also includes: a first restriction determination unit, which determines the first lower limit according to the minimum operating unit rated power of the hydrogen production module and the lower limit of the hydrogen production load power, and determines the first upper limit according to the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules and the upper limit of the hydrogen production load power before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints; a ninth constraint configuration unit, which obtains the third constraint relationship according to the first lower limit, the first upper limit and the hydrogen production operating power of the library; a hydrogen production demand determination unit, which determines the hydrogen production demand according to the hydrogen storage flow rate and the first downstream hydrogen supply flow rate; a hydrogen production constraint configuration unit, which obtains the hydrogen production constraint according to the hydrogen production energy conversion coefficient, the hydrogen production demand and the hydrogen production operating power, in combination with the third constraint relationship.

[0073] The configuration parameter information of the hydrogen storage subsystem includes the hydrogen inventory, hydrogen storage flow, second downstream hydrogen supply flow, hydrogen storage configuration capacity, upper limit of hydrogen inventory ratio and lower limit of hydrogen inventory ratio at each moment. The constraint configuration module also includes: a second restriction determination unit, before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints, obtains the second lower limit according to the lower limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity, and obtains the second lower limit according to the upper limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity. upper limit; the tenth constraint configuration unit obtains the fourth constraint relationship according to the second lower limit, the second upper limit and the hydrogen inventory at the corresponding moment; the hydrogen storage demand determination unit obtains the hydrogen storage demand at the prior target moment according to the hydrogen inventory at the prior target moment, the hydrogen storage flow at the corresponding moment, the second downstream hydrogen supply flow at the corresponding moment and the target time difference determined based on the prior target moment and the subsequent target moment; the hydrogen storage constraint configuration unit obtains the hydrogen storage constraint according to the hydrogen storage demand at the prior target moment and the hydrogen inventory at the subsequent target moment, combined with the fourth constraint relationship.

[0074] The constraint configuration module also includes: a balance constraint configuration unit, which obtains the hydrogen balance constraint according to the first downstream hydrogen supply flow rate, the second downstream hydrogen supply flow rate and the target consumption of hydrogen before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, power generation constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints.

[0075] In addition, the cost information includes the unit construction cost of each subsystem, the operating cost of each subsystem, the electricity sales price at each time, the electricity purchase price at each time, the grid capacity electricity price at each time, the grid capacity electricity price at each time, the grid electricity conversion coefficient, the hydrogen price at each time, the recovery cost information, the equipment replacement cost information and the tax fee information.

[0076] Correspondingly, the model building module includes: a first model building unit, which builds a construction period configuration sub-model according to the power generation configuration capacity, the hydrogen production configuration capacity, the hydrogen storage configuration capacity and the energy storage configuration capacity, combined with the unit cost of each subsystem; a second model building unit, which builds an operation period income sub-model according to the first downstream hydrogen supply flow, the second downstream hydrogen supply flow, the hydrogen price at the corresponding time, the power sold at each time and the power sold price at each time; a third model building unit, which builds an operation period cost sub-model according to the operating cost of each subsystem, the power generation configuration capacity, the hydrogen production configuration capacity, the hydrogen storage configuration capacity, the energy storage configuration capacity, the power purchased at each time, the power purchased at each time, the grid capacity electricity price and the grid electricity conversion coefficient at each time; an initial model building unit, which obtains the initial configuration model according to the construction period configuration sub-model, the operation period income sub-model, the operation period cost sub-model, the recovery cost information, the equipment replacement cost information and the tax fee information.

[0077] In an optional embodiment, the device also includes: an economic indicator determination module, which obtains the target economic indicator according to the resource configuration demand information and the resource configuration result after obtaining the resource configuration result; a configuration module, which configures each subsystem of the wind-solar coupled hydrogen production system according to the resource configuration demand information and the resource configuration result based on the target economic indicator meeting the preset standard.

[0078] Furthermore, the device includes: a return module, after obtaining the target economic indicator, based on the target economic indicator not meeting the preset standard, re-executes steps S11-S12 of the method.

[0079] To sum up, the embodiment of the present invention obtains the subsystem capacity configuration requirement information of the wind-solar coupled hydrogen production system through the information acquisition module, so as to focus on the resource configuration elements required for the actual operation of the system, avoid the interference of irrelevant information, and enable subsequent configuration work to be carried out closely around the core needs, and further use the resource configuration module to comprehensively consider each subsystem based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system. The resource configuration model is created, thereby outputting a more practical and operational resource configuration result, which helps to achieve the coordinated configuration of all links of the overall system, ensure that the system can be reasonably scheduled and allocated, and achieve stable operation of the entire system.

[0080] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3As shown, the electronic device may include: a processor 310, a communications interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communications interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the energy optimization configuration method of the grid-connected wind-solar coupled hydrogen production system, the method comprising: obtaining resource configuration demand information, the resource configuration demand information is used to characterize the subsystem capacity configuration demand of the wind-solar coupled hydrogen production system; according to the resource configuration demand information, using the resource configuration model, obtaining the resource configuration result; wherein the resource configuration model is first created based on the construction and operation information and constraint strategy of each subsystem of the wind-solar coupled hydrogen production system.

[0081] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0082] On the other hand, the present invention also provides a computer program product, which includes a computer program, and the computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system provided by the above methods. The method includes: obtaining resource configuration demand information, and the resource configuration demand information is used to characterize the subsystem capacity configuration demand of the wind-solar coupled hydrogen production system; according to the resource configuration demand information, using the resource configuration model to obtain the resource configuration result; wherein the resource configuration model is first created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system.

[0083] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the energy optimization configuration method of the grid-connected wind-solar coupled hydrogen production system provided by the above-mentioned methods. The method includes: obtaining resource configuration demand information, the resource configuration demand information is used to characterize the subsystem capacity configuration demand of the wind-solar coupled hydrogen production system; according to the resource configuration demand information, using the resource configuration model to obtain the resource configuration result; wherein the resource configuration model is first created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system.

[0084] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0085] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for optimizing energy configuration of a grid-connected wind-solar coupled hydrogen production system, characterized in that: include: Acquire resource configuration requirement information, where the resource configuration requirement information is used to characterize the subsystem capacity configuration requirement of the wind-solar coupled hydrogen production system; According to the resource configuration demand information, a resource configuration result is obtained by using a resource configuration model; wherein the resource configuration model is previously created based on the construction and operation information and constraint strategies of each subsystem of the wind-solar coupled hydrogen production system.

2. The energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system according to claim 1 is characterized in that: The wind-solar coupled hydrogen production system includes a power generation subsystem, an energy storage subsystem, a hydrogen production subsystem and a hydrogen storage subsystem. The construction and operation information includes configuration parameter information and cost information of the corresponding subsystems. The constraint strategy includes inter-system constraints, power generation constraints, grid constraints, energy storage constraints, hydrogen production constraints, hydrogen storage constraints and hydrogen balance constraints. The inter-system constraints are used to limit the relationship between the operating powers of the corresponding subsystems based on power supply demand. The power generation constraints are used to limit the relationship between the corresponding charging and discharging operating power and the power generation configuration capacity based on the configuration parameter information of the power generation subsystem. The grid constraints are used to limit the power generation configuration capacity of the power generation subsystem and the charging and discharging operating power of the power generation subsystem, as well as the hydrogen production configuration capacity of the hydrogen production subsystem and the relationship between the hydrogen production operating power of the hydrogen production subsystem, the energy storage constraint is used to limit the relationship between the energy storage capacity and the energy storage operating power at the previous target moment and the energy storage capacity at the subsequent target moment based on the configuration parameter information of the energy storage subsystem, the hydrogen production constraint is used to limit the relationship between the corresponding hydrogen production operating power and the hydrogen storage flow rate and the first downstream hydrogen supply flow rate based on the configuration parameter information of the hydrogen production subsystem, the hydrogen storage constraint is used to limit the relationship between the hydrogen inventory, the hydrogen storage flow rate and the second downstream hydrogen supply flow rate at the previous target moment and the hydrogen inventory at the subsequent target moment based on the configuration parameter information of the hydrogen storage subsystem, and the hydrogen balance constraint is used to limit the relationship between the downstream hydrogen target consumption and the first downstream hydrogen supply flow rate and the second downstream hydrogen supply flow rate; Before obtaining a resource configuration result by using a resource configuration model according to the resource configuration requirement information, the method includes: Building an initial configuration model based on the configuration parameter information and cost information of each of the subsystems; According to the inter-system constraints, the power generation constraints, the energy storage constraints, the hydrogen production constraints, the hydrogen storage constraints and the hydrogen balance constraints, a constraint strategy is configured for the initial configuration model to obtain a resource configuration model.

3. The energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system according to claim 2 is characterized in that: The power supply demand includes power supply and demand, and before configuring a constraint strategy for the initial configuration model according to the inter-system constraint, the power generation constraint, the energy storage constraint, the hydrogen production constraint, the hydrogen storage constraint and the hydrogen balance constraint, it includes: Determine the power supply amount according to the charging and discharging operating power of the power generation subsystem, the power sold at each moment, and the power purchased; Determining the demand according to the energy storage operating power of the energy storage subsystem, the hydrogen production operating power of the hydrogen production subsystem and the preset abandoned power; Obtaining inter-system constraints according to the power supply and the demand; The configuration parameter information of the power generation subsystem includes historical power generation data and charging and discharging operating power, and before configuring the constraint strategy for the initial configuration model according to the inter-system constraint, the power generation constraint, the energy storage constraint, the hydrogen production constraint, the hydrogen storage constraint and the hydrogen balance constraint, further includes: Obtaining power generation constraints according to the charging and discharging operating power and power generation configuration capacity of the power generation subsystem and the historical power generation data; Before configuring a constraint strategy for the initial configuration model according to the inter-system constraint, the power generation constraint, the energy storage constraint, the hydrogen production constraint, the hydrogen storage constraint and the hydrogen balance constraint, the method further includes: Obtaining a first power selling constraint relationship according to a preset power selling power ratio, the power generation configuration capacity and the power selling capacity; Based on the electricity selling power and electricity selling capacity at each moment, a second electricity selling constraint relationship is obtained; Obtaining a third power sales constraint relationship according to the total power sales volume within the target time difference, the preset maximum power sales volume ratio, and the power generation operation power at each moment within the target time difference; Obtaining a first electricity purchase constraint relationship according to a preset electricity purchase hydrogen production capacity coefficient, the hydrogen production configuration capacity and the electricity purchase capacity; Based on the power purchase power and power purchase capacity at each moment, a second power purchase constraint relationship is obtained; A third power purchase constraint relationship is obtained according to the total power purchase amount within the target time difference, the preset maximum power purchase amount ratio, and the hydrogen storage operation power at each moment within the target time difference; Obtaining a power grid constraint according to the first power sale constraint relationship, the second power sale constraint relationship, the third power sale constraint relationship, the first power purchase constraint relationship, the second power purchase constraint relationship, and the third power purchase constraint relationship; The configuration parameter information of the energy storage subsystem includes the upper limit of the charge-discharge ratio coefficient, the lower limit of the charge-discharge ratio coefficient, the upper limit of the energy storage capacity, the lower limit of the energy storage capacity, the energy storage configuration capacity, the energy storage rated power, the energy storage operating power, the energy storage capacity at each moment, and the operating power conversion coefficient. Before configuring the constraint strategy for the initial configuration model according to the inter-system constraints, the power generation constraints, the energy storage constraints, the hydrogen production constraints, the hydrogen storage constraints, and the hydrogen balance constraints, it also includes: Obtaining a first constraint relationship for energy storage capacity at any time according to the energy storage capacity upper limit, the energy storage capacity lower limit and the energy storage configuration capacity; According to the upper limit of the charge-discharge ratio coefficient, the lower limit of the charge-discharge ratio coefficient and the energy storage rated power, a second constraint relationship for constraining the charge-discharge operation power is obtained; Obtaining the subsystem required energy at the previous target time according to the energy storage capacity at the previous target time, the energy storage operating power, the operating power conversion coefficient, and the target time difference determined based on the previous target time and the subsequent target time; The energy storage constraint is obtained according to the energy storage capacity at the subsequent target moment, the subsystem required energy at the prior target moment, the energy storage operating power, the previously acquired energy storage charging efficiency and the target time difference, and in combination with the first constraint relationship and the second constraint relationship.

4. The energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system according to claim 2 is characterized in that: The configuration parameter information of the hydrogen production subsystem includes the hydrogen production energy conversion coefficient, the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules, the hydrogen production operating power, the upper limit of the hydrogen production load power, the lower limit of the hydrogen production load power, the hydrogen storage flow rate and the first downstream hydrogen supply flow rate. The configuration parameter information of the hydrogen storage subsystem includes the hydrogen inventory at each moment, the hydrogen storage flow rate, the second downstream hydrogen supply flow rate, the hydrogen storage configuration capacity, the upper limit of the hydrogen inventory ratio and the lower limit of the hydrogen inventory ratio; Before configuring a constraint strategy for the initial configuration model according to the inter-system constraint, the power generation constraint, the energy storage constraint, the hydrogen production constraint, the hydrogen storage constraint and the hydrogen balance constraint, the method further includes: Determine a first lower limit according to the minimum operating unit rated power of the hydrogen production module and the lower limit of the hydrogen production load power, and determine a first upper limit according to the minimum operating unit rated power of the hydrogen production module, the number of hydrogen production modules and the upper limit of the hydrogen production load power; According to the first lower limit, the first upper limit and the hydrogen production operation power of the library, a third constraint relationship is obtained; Determining a hydrogen production demand according to the hydrogen storage flow and the first downstream hydrogen supply flow; According to the hydrogen production energy conversion coefficient, the hydrogen production demand and the hydrogen production operating power, in combination with the third constraint relationship, a hydrogen production constraint is obtained; According to the lower limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity, a second lower limit is obtained, and according to the upper limit of the hydrogen inventory ratio and the hydrogen storage configuration capacity, a second upper limit is obtained; A fourth constraint relationship is obtained according to the second lower limit, the second upper limit and the hydrogen inventory at the corresponding moment; Obtaining the hydrogen storage requirement at the previous target time according to the hydrogen inventory at the previous target time, the hydrogen storage flow at the corresponding time, the second downstream hydrogen supply flow at the corresponding time, and the target time difference determined based on the previous target time and the subsequent target time; According to the hydrogen storage demand at the previous target time and the hydrogen inventory at the subsequent target time, in combination with the fourth constraint relationship, a hydrogen storage constraint is obtained; A hydrogen balance constraint is obtained according to the first downstream hydrogen supply flow rate, the second downstream hydrogen supply flow rate and the downstream hydrogen target consumption.

5. The energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system according to claim 2 is characterized in that: The cost information includes the unit cost of each subsystem, the operating cost of each subsystem, the electricity selling price at each time, the electricity purchasing price at each time, the grid capacity electricity price at each time, the grid electricity conversion coefficient, the hydrogen price at each time, the recovery cost information, the equipment replacement cost information and the tax fee information; Based on the configuration parameter information and cost information of each of the subsystems, an initial configuration model is constructed, including: According to the power generation configuration capacity, the hydrogen production configuration capacity, the hydrogen storage configuration capacity and the energy storage configuration capacity, combined with the unit cost of each subsystem, a construction period configuration sub-model is constructed; Constructing an operating period income sub-model according to the first downstream hydrogen supply flow, the second downstream hydrogen supply flow, the hydrogen price at the corresponding time, the power sold at each time, and the power sold at each time; According to the operating costs of each subsystem, the power generation configuration capacity, the hydrogen production configuration capacity, the hydrogen storage configuration capacity, the energy storage configuration capacity, the power purchase power at each time, the power purchase price at each time, the power grid capacity power price at each time and the power grid power conversion coefficient, an operation period cost sub-model is constructed; An initial configuration model is obtained according to the construction period configuration sub-model, the operation period income sub-model, the operation period cost sub-model, the recovery cost information, the equipment replacement cost information and the tax fee information.

6. The energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system according to claim 1 is characterized in that: The resource configuration requirement information includes power generation configuration capacity and energy storage configuration capacity, and the resource configuration result includes hydrogen production configuration capacity and hydrogen storage configuration capacity; or, the resource configuration requirement information includes hydrogen production configuration capacity and hydrogen storage configuration capacity, and the resource configuration result includes power generation configuration capacity and energy storage configuration capacity; According to the resource configuration requirement information, a resource configuration result is obtained by using a resource configuration model, including: Inputting the resource allocation requirement information into the resource allocation model, and using a preset optimization algorithm to obtain a resource allocation result; Determine whether the deviation between the resource configuration result and the preset configuration result meets the preset deviation range. If yes, output the resource configuration result. Otherwise, re-input the resource configuration requirement information into the resource configuration model, and use the preset optimization algorithm to determine the corresponding resource configuration result until the deviation between the obtained resource configuration result and the preset configuration result meets the preset deviation range.

7. The energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system according to claim 1 is characterized in that: After obtaining the resource configuration result, the following steps are included: Obtaining target economic indicators according to the resource allocation demand information and the resource allocation results; Based on the target economic indicator meeting the preset standard, each subsystem of the wind-solar coupled hydrogen production system is configured according to the resource configuration demand information and the resource configuration result.

8. An energy optimization configuration device for a grid-connected wind-solar coupled hydrogen production system, characterized in that: include: An information acquisition module is used to acquire resource configuration requirement information, where the resource configuration requirement information is used to characterize the subsystem capacity configuration requirement of the wind-solar coupled hydrogen production system; The resource configuration module obtains the resource configuration result by using the resource configuration model according to the resource configuration demand information; wherein the resource configuration model is previously created based on the construction and operation information and constraint strategy of each subsystem of the wind-solar coupled hydrogen production system.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the energy optimization configuration method for the grid-connected wind-solar coupled hydrogen production system as described in any one of claims 1 to 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the energy optimization configuration method for a grid-connected wind-solar coupled hydrogen production system as described in any one of claims 1 to 7 is implemented.

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