A method and system for determining the ratio of wind power and photovoltaic hydrogen production system

Abstract

The present invention proposes a method for determining the ratio of wind power and photovoltaic hydrogen production systems. According to the given scale and investment cost of the electric hydrogen production device, combined with the unit power investment cost of wind power and photovoltaics, and the hourly power generation output characteristic data throughout the year, the hydrogen kilogram cost under different wind power and photovoltaic installed capacity ratios is calculated, and the lowest hydrogen kilogram cost is used as the objective function to determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity and electric hydrogen production device scale. This method obtains the cost per kilowatt-hour under different wind power and photovoltaic installed capacity scales based on the hydrogen production capacity and investment cost of the system under study, the unit power investment and output characteristic data of wind power and photovoltaics. By comparing the cost per kilowatt-hour, the optimal ratio scheme of wind power installed capacity, photovoltaic installed capacity and electric hydrogen production device scale is determined, and ultimately the investment efficiency of the wind power and photovoltaic hydrogen production system is improved.

Description

Technical Field

[0001] The present invention relates to the field of electric energy system planning, and in particular to a method and system for determining the proportion of wind power, photovoltaic and hydrogen production systems for determining the proportion of various scales of wind power, photovoltaic and hydrogen production systems. Background Art

[0002] As a clean, low-carbon secondary energy source, hydrogen boasts widespread availability, flexibility, efficiency, and a wide range of applications. It is a key tool for achieving carbon peak and carbon neutrality, and a key direction for energy structure adjustment and industrial transformation and upgrading. Hydrogen produced from renewable energy sources such as photovoltaics and wind power is truly zero-emission green hydrogen. Due to the volatility of photovoltaic and wind power, green hydrogen is currently still in the pilot phase. However, with the accelerating evolution of renewable energy technologies, through large-scale expansion of hydrogen production, distribution, equipment, and component manufacturing, green hydrogen has the potential to become a competitive, economical alternative in certain sectors. For wind and photovoltaic power plants without power transmission channels, hydrogen production offers a potential energy resource. Due to the intermittent, random, and volatile output of wind and photovoltaic power, which only reaches high levels during a few periods throughout the year, hydrogen production plants often fall short of their production capacity. This is reflected in the low annual utilization hours of wind and photovoltaic power, which prevent hydrogen production plants from achieving their designed, high, and economical annual electricity hours, resulting in a poor match between the two.

[0003] Under the premise of a certain scale of electricity consumption of the hydrogen production device, the scale of wind power and photovoltaic power can be appropriately exceeded. At the cost of a small amount of abandoned electricity, the utilization rate of the hydrogen production device can be improved, and ultimately the investment efficiency of the wind power and photovoltaic hydrogen production system can be improved.

[0004] Increasing the capacity of the hydrogen production unit in a wind-powered photovoltaic hydrogen production system will reduce its utilization rate, and reducing the capacity of the hydrogen production unit will reduce the utilization rate of wind power and photovoltaic power. Therefore, it is necessary to determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity, and hydrogen production equipment scale. Summary of the Invention

[0005] To determine the optimal ratio of wind power, photovoltaic power, and hydrogen production capacity, and to improve the investment efficiency of wind power and photovoltaic hydrogen production systems, the present invention provides a method and system for determining the ratio of wind power and photovoltaic power to hydrogen production systems. This method uses the hydrogen production capacity and investment cost of the system under investigation, as well as the unit power investment and output characteristics of wind power and photovoltaic power, to determine the cost per kilowatt-hour (COP) for different wind power and photovoltaic power capacity scales. By comparing the COPs, the optimal ratio of wind power, photovoltaic power, and hydrogen production capacity is determined, ultimately improving the investment efficiency of the wind power and photovoltaic power hydrogen production system.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for determining the ratio of a wind power and photovoltaic hydrogen production system, comprising:

[0008] Obtain the investment cost of hydrogen production equipment, the investment cost of wind power and photovoltaic installations, and hourly power output characteristics of wind power and photovoltaics throughout the year;

[0009] Based on the hourly power generation output characteristic data of wind power and photovoltaic power generation throughout the year, the hourly power generation power of wind power and photovoltaic power generation units of different sizes is calculated throughout the year, and then the annual hydrogen production is calculated by matching the power consumption of a given electric hydrogen production device size. Based on the investment cost of a given electric hydrogen production device size and the investment costs of wind power and photovoltaic power generation units of different sizes, the annual cost of the entire wind power and photovoltaic hydrogen production system is calculated. Based on the annual cost of the entire wind power and photovoltaic hydrogen production system and the annual hydrogen production, the cost per kilogram of hydrogen for wind power and photovoltaic power generation units of different sizes that match the given electric hydrogen production device size is calculated.

[0010] Taking the lowest hydrogen cost per kilogram as the objective function, the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production equipment scale is determined.

[0011] As a further improvement of the present invention, the objective function determines the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production device scale by comparing different wind power and photovoltaic installed capacity scales and the hydrogen kilogram cost of a given hydrogen production device scale.

[0012] As a further improvement of the present invention, the objective function is specifically:

[0013] The objective function is: min(hydrogen kilogram cost)

[0014] Cost per kilogram of hydrogen = (annual investment cost of wind power + wind power operation and maintenance cost + annual investment cost of photovoltaic power + photovoltaic operation and maintenance cost + annual cost of hydrogen production device + operation and maintenance cost of hydrogen production device) ÷ annual hydrogen production.

[0015] As a further improvement of the present invention, the cost in the objective function is obtained by the following formula:

[0016] Annual cost of wind power investment = wind power installed capacity × wind power unit power investment cost × equal annual value coefficient;

[0017] Wind power operation and maintenance costs = wind power installed capacity × wind power unit power investment cost × operation and maintenance rate;

[0018] Annual cost of photovoltaic investment = photovoltaic installed capacity × photovoltaic unit power investment cost × equal annual value coefficient;

[0019] PV operation and maintenance costs = PV installed capacity × PV unit power investment cost × operation and maintenance rate;

[0020] Annual cost of hydrogen production plant = scale of hydrogen production plant × unit power investment cost of hydrogen production plant × equal annual value coefficient;

[0021] Operation and maintenance costs of the electric hydrogen production device = scale of the electric hydrogen production device × unit power investment cost of the electric hydrogen production device × operation and maintenance rate.

[0022] As a further improvement of the present invention, after determining the optimal ratio of wind power installed capacity, photovoltaic installed capacity, and electric hydrogen production device scale, the method further includes obtaining the system power generation and power abandonment rate. The step of obtaining the system power generation and power abandonment rate specifically includes:

[0023] The hourly power generation capacity of wind power and photovoltaic power plants is simulated based on their hourly power generation output characteristic data and installed capacity.

[0024] Based on the power consumption range of the hydrogen production device, the part of the hourly power generated by wind power and photovoltaic power that is greater than the power consumption of the hydrogen production device is discarded, and the rest is the hydrogen production power;

[0025] Corresponding to the hourly hydrogen production, the hourly data are accumulated to obtain the annual hydrogen production.

[0026] A wind power and photovoltaic hydrogen production system ratio determination system, comprising:

[0027] An acquisition module is used to obtain the investment cost of the electric hydrogen production device, the investment cost of wind power and photovoltaic installations, and the hourly power generation output characteristic data of wind power and photovoltaics throughout the year;

[0028] A calculation module is used to calculate the hourly power generation of wind power and photovoltaic installations of different sizes throughout the year based on their hourly power generation output characteristic data throughout the year, and then calculate the annual hydrogen production by matching the power consumption of a given hydrogen production device scale. The annual cost of the entire wind power and photovoltaic hydrogen production system is calculated based on the investment cost of the given hydrogen production device scale and the investment costs of wind power and photovoltaic installations of different sizes. The cost per kilogram of hydrogen is calculated based on the annual cost of the entire wind power and photovoltaic hydrogen production system and the annual hydrogen production.

[0029] The determination module is used to determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production equipment scale with the lowest hydrogen kilogram cost as the objective function.

[0030] As a further improvement of the present invention, in the determination module, the objective function is specifically:

[0031] The objective function is: min(hydrogen kilogram cost)

[0032] Cost per kilogram of hydrogen = (annual investment cost of wind power + wind power operation and maintenance cost + annual investment cost of photovoltaic power + photovoltaic operation and maintenance cost + annual cost of hydrogen production device + operation and maintenance cost of hydrogen production device) ÷ annual hydrogen production.

[0033] As a further improvement of the present invention, an acquisition module is further included for obtaining the system power generation and power abandonment rate, specifically including:

[0034] The hourly power generation capacity of wind power and photovoltaic power plants is simulated based on their hourly power generation output characteristic data and installed capacity.

[0035] Based on the power consumption range of the hydrogen production device, the part of the hourly power generated by wind power and photovoltaic power that is greater than the power consumption of the hydrogen production device is discarded, and the rest is the hydrogen production power;

[0036] Corresponding to the hourly hydrogen production, the hourly data are accumulated to obtain the annual hydrogen production.

[0037] A device for determining the ratio of a wind power and photovoltaic hydrogen production system, comprising:

[0038] Memory,

[0039] processor,

[0040] The processor is configured to execute the wind power and photovoltaic hydrogen production system ratio determination method.

[0041] A computer-readable storage medium, when instructions in the storage medium are executed by a processor, enables the processor to execute the method for determining the ratio of a wind power and photovoltaic hydrogen production system.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] Based on a given hydrogen production plant scale and investment cost, combined with the unit power investment costs of wind and photovoltaic power plants and hourly annual power generation characteristics, this method calculates the cost per kilogram of hydrogen for different wind and photovoltaic power plant ratios. Using the lowest cost per kilogram of hydrogen as the objective function, the method determines the optimal ratio of wind power, photovoltaic, and hydrogen production plant scales. This method can determine the optimal ratio of wind power, photovoltaic, and hydrogen production plant scales, improving the investment efficiency of wind and photovoltaic hydrogen production systems. Furthermore, this optimization method offers convenient and efficient calculations. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a flow chart of the method for determining the ratio of a wind power and photovoltaic hydrogen production system according to the present invention;

[0045] Figure 2 This is a graph showing the relationship between the installed photovoltaic capacity, curtailment rate, and cost per kilowatt-hour of the example system.

[0046] Figure 3 This is a schematic diagram of the structure of a system for determining the ratio of a wind power and photovoltaic hydrogen production system according to the present invention;

[0047] Figure 4 The figure is a structural diagram of an electronic device according to the present invention. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts should fall within the scope of protection of the present invention.

[0049] The present invention provides a method for determining the ratio of a wind power and photovoltaic hydrogen production system. The method mainly determines the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production device scale based on parameters such as the hydrogen production capacity of a given hydrogen production device scale and takes the lowest hydrogen kilogram cost as the objective function, and can also obtain the wind power and photovoltaic utilization rates.

[0050] like Figure 1 As shown, the specific steps are as follows:

[0051] (1) Collect the unit power investment cost of hydrogen production equipment, the unit power investment cost of wind power and photovoltaic installed capacity, and the hourly power output characteristics of wind power and photovoltaic throughout the year;

[0052] (2) Based on the hourly power generation output characteristic data of wind power and photovoltaic power generation throughout the year, the hourly power generation power of wind power and photovoltaic power generation units of different sizes is calculated, and then the annual hydrogen production is calculated by matching the power consumption of the given electric hydrogen production device size. Based on the investment cost of the given electric hydrogen production device size and the investment costs of wind power and photovoltaic power generation units of different sizes, the annual cost of the entire wind power and photovoltaic hydrogen production system is calculated. Based on the annual cost of the entire wind power and photovoltaic hydrogen production system and the annual hydrogen production, the kilogram cost of hydrogen for wind power and photovoltaic power generation units of different sizes matching the given electric hydrogen production device size is calculated.

[0053] (3) Select the optimal wind power and photovoltaic installed capacity scale based on the hydrogen kilogram cost, and then determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production equipment scale.

[0054] Wherein, as a preferred embodiment, the objective function is specifically:

[0055] The objective function is: min(hydrogen kilogram cost)

[0056] Cost per kilogram of hydrogen = (annual investment cost of wind power + wind power operation and maintenance cost + annual investment cost of photovoltaic power + photovoltaic operation and maintenance cost + annual cost of hydrogen production device + operation and maintenance cost of hydrogen production device) ÷ annual hydrogen production.

[0057] The cost in the objective function is obtained by the following formula:

[0058] Annual cost of wind power investment = wind power installed capacity × wind power unit power investment cost × equal annual value coefficient;

[0059] Wind power operation and maintenance costs = wind power installed capacity × wind power unit power investment cost × operation and maintenance rate;

[0060] Annual cost of photovoltaic investment = photovoltaic installed capacity × photovoltaic unit power investment cost × equal annual value coefficient;

[0061] PV operation and maintenance costs = PV installed capacity × PV unit power investment cost × operation and maintenance rate;

[0062] Annual cost of hydrogen production plant = scale of hydrogen production plant × unit power investment cost of hydrogen production plant × equal annual value coefficient;

[0063] Operation and maintenance costs of the electric hydrogen production device = scale of the electric hydrogen production device × unit power investment cost of the electric hydrogen production device × operation and maintenance rate.

[0064] (4) Obtain the system power generation and power abandonment rate.

[0065] As a preferred solution, this step specifically includes:

[0066] First, the hourly power generation capacity of wind power and photovoltaic power is simulated throughout the year through the hourly power generation output characteristic data of wind power and photovoltaic power and the installed capacity of wind power and photovoltaic power. Secondly, according to the power consumption range of the electric hydrogen production device, the part of the hourly power generation capacity of wind power and photovoltaic power that is greater than the power consumption of the electric hydrogen production device is discarded, and the rest is the hydrogen production power, which corresponds to the hourly hydrogen production. The annual hydrogen production can be obtained by accumulating the hourly data.

[0067] The following is a detailed description of an example of a wind power photovoltaic hydrogen production system with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0068] Example

[0069] A wind power and photovoltaic hydrogen production system with a hydrogen production capacity of 20,000 Nm 3 / h (1800kg / h), the power consumption of the electrolytic cell is 100MW.

[0070] Combine Figure 1 and Figure 2 , the specific steps of this method are as follows:

[0071] (1) Collect data on the hydrogen production capacity of the hydrogen production device of the system under study, the investment cost of the hydrogen production device, and the unit power investment cost of wind power and photovoltaic power:

[0072] The hydrogen production unit of this system has a capacity of 20,000 Nm 3 / h (1800kg / h), the power consumption of the electrolyzer is 100,000 kW, and the unit investment of the hydrogen production device is 25,000 yuan / (Nm 3 / h), which is equivalent to a unit power investment of 5,000 yuan / kW for the electric hydrogen production device, and a total investment of about 500 million yuan for electrolytic hydrogen production equipment.

[0073] The unit power investment of wind power is 6,000 yuan / kW.

[0074] The unit power investment for photovoltaic power is 4,000 yuan / kW.

[0075] (2) Calculate the hydrogen kilogram cost under different wind power and photovoltaic installed capacity scales:

[0076] The annual cost of hydrogen production equipment is: the annual value of equipment investment is RMB 46.84 million, and the annual operation and maintenance cost is RMB 7.5 million. The cost per kilogram of hydrogen under different wind power and photovoltaic installed capacity ratios is calculated. The results are shown in Table 1 and Figure 2 .

[0077] Table 1 Ratio of wind power and photovoltaic installed capacity and hydrogen kilogram cost

[0078]

[0079] (3) Select the optimal wind power and photovoltaic installed capacity:

[0080] As shown in the figure and table, as wind and photovoltaic capacity increases, the utilization rate of wind and photovoltaic power decreases, and the cost per kilowatt-hour (CLE) initially decreases and then increases. When the hydrogen production unit has a maximum power of 100,000 kW and an output of 1,800 kg / h, with 140,000 kW of wind power and 60,000 kW of photovoltaic power, the cost per kilogram of hydrogen is 17.25 yuan / kWh, representing the optimal ratio of wind power, photovoltaic power, and hydrogen production capacity. At this point, the utilization rate of wind and photovoltaic power generation is 93.6%.

[0081] like Figure 3 As shown, the present invention also provides a system for determining the ratio of a wind power and photovoltaic hydrogen production system, comprising:

[0082] An acquisition module is used to obtain the investment cost of the electric hydrogen production device, the investment cost of wind power and photovoltaic installations, and the hourly power generation output characteristic data of wind power and photovoltaic throughout the year;

[0083] A calculation module is used to calculate the hourly power generation of wind power and photovoltaic installations of different sizes throughout the year based on their hourly power generation output characteristic data throughout the year, and then calculate the annual hydrogen production by matching the power consumption of a given hydrogen production device scale. The annual cost of the entire wind power and photovoltaic hydrogen production system is calculated based on the investment cost of the given hydrogen production device scale and the investment costs of wind power and photovoltaic installations of different sizes. The cost per kilogram of hydrogen is calculated based on the annual cost of the entire wind power and photovoltaic hydrogen production system and the annual hydrogen production.

[0084] The determination module is used to determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production equipment scale with the lowest hydrogen kilogram cost as the objective function.

[0085] As a preferred embodiment, in the determination module, the objective function is specifically:

[0086] The objective function is: min(hydrogen kilogram cost)

[0087] Cost per kilogram of hydrogen = (annual investment cost of wind power + wind power operation and maintenance cost + annual investment cost of photovoltaic power + photovoltaic operation and maintenance cost + annual cost of hydrogen production device + operation and maintenance cost of hydrogen production device) ÷ annual hydrogen production.

[0088] The system also includes an acquisition module for obtaining the system power generation and power abandonment rate, specifically including:

[0089] The hourly power generation capacity of wind power and photovoltaic power plants is simulated based on their hourly power generation output characteristic data and installed capacity.

[0090] Based on the power consumption range of the hydrogen production device, the part of the hourly power generated by wind power and photovoltaic power that is greater than the power consumption of the hydrogen production device is discarded, and the rest is the hydrogen production power;

[0091] Corresponding to the hourly hydrogen production, the hourly data are accumulated to obtain the annual hydrogen production.

[0092] Another object of the present invention is to provide a device for determining the ratio of a wind power and photovoltaic hydrogen production system, comprising:

[0093] Memory,

[0094] processor,

[0095] The processor is configured to execute the wind power and photovoltaic hydrogen production system ratio determination method.

[0096] The present invention also provides a computer-readable storage medium. When the instructions in the storage medium are executed by a processor, the processor is enabled to execute the method for determining the ratio of a wind power and photovoltaic hydrogen production system.

[0097] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0098] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0099] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for determining the ratio of a wind power and photovoltaic hydrogen production system, characterized in that: include: Obtain the investment cost of hydrogen production equipment, the investment cost of wind power and photovoltaic installations, and hourly power output characteristics of wind power and photovoltaics throughout the year; Based on the hourly power generation output characteristic data of wind power and photovoltaic power generation throughout the year, the hourly power generation power of wind power and photovoltaic power generation units of different sizes is calculated throughout the year, and then the annual hydrogen production is calculated by matching the power consumption of a given electric hydrogen production device size. Based on the investment cost of a given electric hydrogen production device size and the investment costs of wind power and photovoltaic power generation units of different sizes, the annual cost of the entire wind power and photovoltaic hydrogen production system is calculated. Based on the annual cost of the entire wind power and photovoltaic hydrogen production system and the annual hydrogen production, the cost per kilogram of hydrogen for wind power and photovoltaic power generation units of different sizes that match the given electric hydrogen production device size is calculated. Taking the lowest hydrogen kilogram cost as the objective function, determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production equipment scale; The objective function determines the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production device scale by comparing the hydrogen kilogram cost of different wind power and photovoltaic installed capacity scales and a given hydrogen production device scale; The objective function is specifically: The objective function is: min(hydrogen kilogram cost) Cost per kilogram of hydrogen = (annual investment cost of wind power + wind power operation and maintenance cost + annual investment cost of photovoltaic power + photovoltaic operation and maintenance cost + annual cost of hydrogen production device + operation and maintenance cost of hydrogen production device) ÷ annual hydrogen production; The cost in the objective function is obtained by the following formula: Annual cost of wind power investment = wind power installed capacity × wind power unit power investment cost × equal annual value coefficient; Wind power operation and maintenance costs = wind power installed capacity × wind power unit power investment cost × operation and maintenance rate; Annual cost of photovoltaic investment = photovoltaic installed capacity × photovoltaic unit power investment cost × equal annual value coefficient; PV operation and maintenance costs = PV installed capacity × PV unit power investment cost × operation and maintenance rate; Annual cost of hydrogen production plant = scale of hydrogen production plant × unit power investment cost of hydrogen production plant × equal annual value coefficient; Operation and maintenance cost of hydrogen production device = scale of hydrogen production device × unit power investment cost of hydrogen production device × operation and maintenance rate; After determining the optimal ratio of wind power installed capacity, photovoltaic installed capacity, and hydrogen production equipment scale, the process also includes obtaining the system power generation and power abandonment rate. The process specifically includes: The hourly power generation capacity of wind power and photovoltaic power plants is simulated based on their hourly power generation output characteristic data and installed capacity. Based on the power consumption range of the hydrogen production device, the part of the hourly power generated by wind power and photovoltaic power that is greater than the power consumption of the hydrogen production device is discarded, and the rest is the hydrogen production power; Corresponding to the hourly hydrogen production, the hourly data are accumulated to obtain the annual hydrogen production.

2. A wind power photovoltaic hydrogen production system ratio determination system, characterized in that: include: An acquisition module is used to obtain the investment cost of the electric hydrogen production device, the investment cost of wind power and photovoltaic installations, and the hourly power generation output characteristic data of wind power and photovoltaic throughout the year; A calculation module is used to calculate the hourly power generation of wind power and photovoltaic installations of different sizes throughout the year based on their hourly power generation output characteristic data throughout the year, and then calculate the annual hydrogen production by matching the power consumption of a given hydrogen production device scale. The annual cost of the entire wind power and photovoltaic hydrogen production system is calculated based on the investment cost of the given hydrogen production device scale and the investment costs of wind power and photovoltaic installations of different sizes. The cost per kilogram of hydrogen is calculated based on the annual cost of the entire wind power and photovoltaic hydrogen production system and the annual hydrogen production. A determination module is used to determine the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production equipment scale with the lowest hydrogen kilogram cost as the objective function; The objective function determines the optimal ratio of wind power installed capacity, photovoltaic installed capacity and hydrogen production device scale by comparing the hydrogen kilogram cost of different wind power and photovoltaic installed capacity scales and a given hydrogen production device scale; The objective function is specifically: The objective function is: min(hydrogen kilogram cost) Cost per kilogram of hydrogen = (annual investment cost of wind power + wind power operation and maintenance cost + annual investment cost of photovoltaic power + photovoltaic operation and maintenance cost + annual cost of hydrogen production device + operation and maintenance cost of hydrogen production device) ÷ annual hydrogen production; The cost in the objective function is obtained by the following formula: Annual cost of wind power investment = wind power installed capacity × wind power unit power investment cost × equal annual value coefficient; Wind power operation and maintenance costs = wind power installed capacity × wind power unit power investment cost × operation and maintenance rate; Annual cost of photovoltaic investment = photovoltaic installed capacity × photovoltaic unit power investment cost × equal annual value coefficient; PV operation and maintenance costs = PV installed capacity × PV unit power investment cost × operation and maintenance rate; Annual cost of hydrogen production plant = scale of hydrogen production plant × unit power investment cost of hydrogen production plant × equal annual value coefficient; Operation and maintenance cost of hydrogen production device = scale of hydrogen production device × unit power investment cost of hydrogen production device × operation and maintenance rate; The acquisition module is used to obtain the system power generation and power abandonment rate, including: The hourly power generation capacity of wind power and photovoltaic power plants is simulated based on their hourly power generation output characteristic data and installed capacity. Based on the power consumption range of the hydrogen production device, the part of the hourly power generated by wind power and photovoltaic power that is greater than the power consumption of the hydrogen production device is discarded, and the rest is the hydrogen production power; Corresponding to the hourly hydrogen production, the hourly data are accumulated to obtain the annual hydrogen production.

3. A device for determining the ratio of wind power and photovoltaic hydrogen production system, characterized in that: include: Memory, processor, The processor is configured to execute the method for determining the ratio of a wind power and photovoltaic hydrogen production system according to claim 1.

4. A computer-readable storage medium, characterized in that When the instructions in the storage medium are executed by a processor, the processor is enabled to execute the method for determining the ratio of a wind power and photovoltaic hydrogen production system according to claim 1.

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