Electrolytic cell array power distribution method and system considering hydrogen production efficiency and medium

Abstract

The invention relates to an electrolytic cell array power distribution method and system considering hydrogen production efficiency, and a medium. The method specifically comprises the following steps: converting received to-be-consumed electric power into to-be-optimized power of an electrolytic cell array; calculating the initial operation optimal power of the electrolytic cell array by taking the maximization of the efficiency and the hydrogen yield of the electrolytic cell array as a target, and obtaining segmentation execution information according to the to-be-optimized power of the electrolytic cell array and the initial operation optimal power of the electrolytic cell array on the basis of a set distribution rule; obtaining a power distribution instruction based on the segment execution information; and each electrolytic cell in the electrolytic cell array adjusts the corresponding hydrogen production power according to the power distribution instruction. The power distribution method provided by the invention not only can consume surplus renewable energy sources, but also can improve the hydrogen yield under the condition of not increasing the system equipment cost, reduce the start-stop frequency of the electrolytic cell, improve the utilization rate of the electrolytic cell and prolong the service life of the electrolytic cell.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolyzer hydrogen production, and in particular to an electrolyzer array power distribution method and system, and a medium taking hydrogen production efficiency into account. Background Art

[0002] Thanks to the support of energy strategies, renewable energy has been able to develop rapidly. Due to the intermittent and volatile nature of wind power and photovoltaics, they cannot be fully integrated into the power grid for consumption, which has a serious impact on the safe and stable operation of the power grid, resulting in frequent wind and solar power abandonment, waste of investment and other phenomena. The development of hydrogen energy storage technology plays a key role in solving these problems. In order to address the problem of large-scale grid connection and consumption of wind power, surplus wind power can be consumed by electrolysis to produce hydrogen. Using the surplus electricity generated by wind abandonment to produce hydrogen can not only effectively improve energy utilization, but also reduce carbon emissions and hydrogen production costs during the hydrogen production process, providing an effective way to produce green hydrogen.

[0003] However, the energy conversion efficiency of water electrolysis to produce hydrogen is usually a worrying issue, especially for large-scale multi-electrolyzer arrays above MW level, so it is particularly important to improve the electrolysis efficiency. In practical applications, hydrogen production is often large-scale, and multiple electrolyzers are usually combined into an electrolyzer array to meet the hydrogen production needs. At present, most electrolyzer arrays use a staged start-stop control strategy.

[0004] Under this start-stop control strategy, the electrolyzer is basically in the rated state or the stopped state. Especially when the power is low, most of the electrolyzers are in the stopped state, and the startup method is cold start. It takes a long time for the operating temperature to rise to the rated temperature, and the efficiency and utilization rate of the electrolyzer are low. In addition, the electrolyzer is started and stopped frequently, which seriously affects the economy and service life of the hydrogen production system. Summary of the invention

[0005] The present invention provides a power distribution method, system and medium for an electrolyzer array taking hydrogen production efficiency into consideration, with the goal of maximizing the hydrogen production and efficiency of the electrolyzer array, and performing segmented control according to the deviation between the power to be consumed and the initial optimal operating power, thereby avoiding frequent start and stop of the electrolyzers and increasing the service life of the electrolyzer array.

[0006] The present invention solves the above technical problems as follows: A method for distributing power of an electrolyzer array taking into account hydrogen production efficiency comprises the following steps:

[0007] Receiving the electricity to be consumed and converting the electricity to be consumed into the power to be optimized for the electrolyzer array;

[0008] Taking the maximization of the efficiency and hydrogen production of the electrolyzer array as the goal, the optimal power of the initial operation of the electrolyzer array is calculated, and the segmented execution information is obtained based on the set allocation rules according to the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array;

[0009] A power allocation instruction is obtained based on the segmented execution information; each electrolyzer in the electrolyzer array adjusts the hydrogen production power of the electrolyzer accordingly according to the power allocation instruction.

[0010] Preferably, the method further comprises: if the total hydrogen production power of the electrolyzer array does not meet the set feedback error e2, adjusting the electrolyzer array power P to be optimized elt , and re-optimize the power P of the electrolyzer array elt The optimal power P0 of the electrolyzer array is output in sections to execute information and power allocation instructions until the total hydrogen production power P el Satisfy the set feedback error e2.

[0011] Preferably, the optimal power of the initial operation of the electrolyzer array is calculated with the goal of maximizing the efficiency and hydrogen production of the electrolyzer array, and the segmented execution information is obtained based on the set allocation rules according to the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array, which specifically includes:

[0012] The constructed electrolytic cell array voltage model and electrolytic cell array efficiency model are as follows:

[0013] U el =U rev +U ohm +U act

[0014] Where: U el is the cell voltage; U rev is the reversible voltage of the electrolytic cell; U ohm is the ohmic overvoltage of the electrolytic cell; U act The electrolytic cell activation overvoltage;

[0015]

[0016] U0=1.229-0.9×10 -3 (T-298)

[0017] Where: U0 is the reversible voltage under standard pressure; R is the ideal gas constant; T is the working temperature of the electrolytic cell; z is the number of molar electrons participating in the reaction during the electrolysis process; F is the Faraday constant; is the partial pressure of hydrogen; is the partial pressure of oxygen; is the activity of water between the electrode and the proton membrane; p0 is the standard atmospheric pressure:

[0018]

[0019] Where: j is the working current density of the electrolytic cell; t mis the thickness of the proton exchange membrane; σ m is the conductivity of the proton exchange membrane; λ is the water content of the proton exchange membrane;

[0020] The electrolyzer array efficiency is as follows:

[0021] η=η v η F

[0022] M=f3P el η

[0023] Where: η is the total efficiency of the electrolyzer; η v is the voltage efficiency; η F is the current efficiency; M is the hydrogen production; P el is the total real-time output power of the electrolyzer array; f3 is the hydrogen production coefficient per kilowatt-hour;

[0024]

[0025] Where: U th is the thermal neutral voltage; f1 and f2 represent Faraday related parameters.

[0026] Based on the electrolyzer array voltage model and electrolyzer array efficiency model, an objective function for maximizing the electrolyzer array efficiency and hydrogen production is established, and operating constraints of the electrolyzer array are set;

[0027] The objective function for maximizing the efficiency and hydrogen production of the electrolyzer array is as follows:

[0028]

[0029] The operating constraints of the electrolyzer array are as follows:

[0030] The current density of the electrolyzer array is set as follows: 0.2 <j<2.0

[0031] Electrolyzer array real-time power Total output power: 20% P rat <P el <P rat , P rat is the rated power of the electrolyzer array;

[0032] Based on the operating constraints of the electrolytic cell array, the objective function is solved by a particle swarm optimization algorithm to obtain the initial operating optimal power P0 of the electrolytic cell array;

[0033] Calculate the power P to be optimized for the electrolyzer array elt The difference e1 between the initial operation optimal power P0 and the segment execution information is obtained based on the set allocation rules.

[0034] Preferably, the set allocation rules specifically include:

[0035] When e1 = -P0, the power allocation instruction for the electrolyzer array power to be 0 is output;

[0036] When -P0<e1<0, output the power allocation instruction that k1 electrolyzers are in operation and the other electrolyzers are not in operation, wherein the sum of the hydrogen production powers of the k1 electrolyzers is equal to the initial operating optimal power.

[0037] When e1=0, the power allocation instruction for the electrolyzer array to continue to operate at the current power is output;

[0038] When 0<e1<e 1max , output each electrolyzer array to operate at the initial optimal power, and then gradually increase the power of n electrolyzers until the total hydrogen production power meets the power allocation specified by the feedback error;

[0039] when Output power allocation instructions for the electrolyzer array to continue operating at the current power.

[0040] The feedback error e2 is set to the total hydrogen production power P of the electrolyzer array el and the electrolyzer array to be optimized power P elt The difference is not less than zero, or the total hydrogen production power P of the electrolyzer array el Equal to the total rated power of the electrolyzer array.

[0041] Compared with the traditional staged switching power distribution method, the above-mentioned segmented control rules try to keep each electrolyzer in working condition and gradually increase from the initial optimal operating power. This not only ensures the hydrogen production efficiency and economy of the hydrogen production system, but also improves the utilization rate of the hydrogen production equipment, reduces the start and stop frequency of the equipment, and thus increases the service life of the hydrogen production system.

[0042] Preferably, when 0<e1<e 1max , the output electrolyzer array operates at the initial optimal power P0, and then gradually increases the power of n electrolyzers until the total hydrogen production power P el The power allocation specification that satisfies the feedback error e2 specifically includes:

[0043] When 0<e1<e 1max , output the power allocation instruction for the electrolyzer array to operate at the initial optimal power P0;

[0044] Output a power allocation instruction in which the power of n electrolyzers is increased sequentially. If the total hydrogen production power does not meet the feedback error e2, it will increase sequentially starting from the first electrolyzer until the total hydrogen production power does not meet the feedback error e2.

[0045] The present invention also provides an electrolyzer array power distribution system taking into account hydrogen production efficiency, comprising:

[0046] A power input module, used for receiving the power to be consumed and converting the power to be consumed into the power to be optimized for the electrolyzer array;

[0047] A segment selection switch is used to calculate the optimal power for the initial operation of the electrolyzer array with the goal of maximizing the efficiency and hydrogen production of the electrolyzer array, and output segment execution information based on the power to be optimized of the electrolyzer array and the optimal power for the initial operation of the electrolyzer array according to the set allocation rules;

[0048] A segment controller, configured to output a power allocation instruction based on the segment execution information;

[0049] The actuator is used to adjust and control the corresponding hydrogen production power of each electrolyzer in the electrolyzer array according to the power allocation instruction.

[0050] Preferably, the system further comprises: a total hydrogen production power P of the electrolyzer array el If the set feedback error e2 is not met, the power P of the electrolytic cell array to be optimized is adjusted. elt , and re-optimize the power P of the electrolyzer array elt The optimal power P0 of the electrolyzer array is output in sections to execute information and power allocation instructions until the total hydrogen production power P el Satisfy the set feedback error e2.

[0051] Preferably, the method aims to maximize the efficiency and hydrogen production of the electrolyzer array, calculates the optimal power of the initial operation of the electrolyzer array, and outputs segmented execution information based on the set allocation rules according to the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array, specifically including:

[0052] The constructed electrolyzer array voltage model and electrolyzer array efficiency model;

[0053] Based on the electrolyzer array voltage model and electrolyzer array efficiency model, an objective function for maximizing the electrolyzer array efficiency and hydrogen production is established, and operating constraints of the electrolyzer array are set;

[0054] Based on the operating constraints of the electrolytic cell array, the objective function is solved by a particle swarm optimization algorithm to obtain the initial operating optimal power P0 of the electrolytic cell array;

[0055] Calculate the power P to be optimized for the electrolyzer array elt The difference e1 from the initial operation optimal power P0 is used to output the segment execution information based on the set allocation rules.

[0056] Preferably, the set allocation rules specifically include:

[0057] When e1 = -P0, the power allocation instruction for the electrolyzer array power to be 0 is output;

[0058] When -P0<e1<0, output the power allocation instruction that k1 electrolytic cells are initially operated at the optimal power P0 and the remaining electrolytic cells are not operated.

[0059] When -P0<e1<0, output the power allocation instruction that k1 electrolyzers are in operation and the other electrolyzers are not in operation, wherein the sum of the hydrogen production powers of the k1 electrolyzers is equal to the initial operating optimal power.

[0060] When e1=0, the power allocation instruction for the electrolyzer array to continue to operate at the current power is output;

[0061] When 0<e1<e 1max , output each electrolyzer array to operate at the initial optimal power, and then gradually increase the power of n electrolyzers until the total hydrogen production power meets the power allocation specified by the feedback error;

[0062] The feedback error e2 is set to the total hydrogen production power P of the electrolyzer array el and the electrolyzer array to be optimized power P elt The difference is not less than zero, or the total hydrogen production power P of the electrolyzer array el Equal to the total rated power of the electrolyzer array.

[0063] Preferably, when 0<e1<e 1max , output each electrolyzer to operate at the initial optimal power P0, and then gradually increase the power of n electrolyzers until the total hydrogen production power P el The power allocation specification that satisfies the feedback error e2 specifically includes:

[0064] When 0<e1<e 1max , output the power allocation instruction for each electrolyzer to operate at the initial optimal power P0;

[0065] Output a power allocation instruction in which the power of n electrolyzers is increased sequentially. If the total hydrogen production power does not meet the feedback error e2, it will increase sequentially starting from the first electrolyzer until the total hydrogen production power does not meet the feedback error e2.

[0066] The present invention also provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the electrolyzer array power allocation method based on hydrogen production efficiency as described above are implemented.

[0067] The present invention also provides an electronic device, comprising a memory and a processor: the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions, and when the computer-executable instructions are executed by the processor, the steps of the electrolyzer array power allocation method based on taking into account the hydrogen production efficiency as described above are implemented.

[0068] The beneficial effect of the present invention is that the allocation method provided by the present invention comprehensively considers the relationship between the hydrogen production efficiency, hydrogen production and power of the electrolyzer, converts the external power to be consumed into power with consumption and reasonably allocates it to the electrolyzer array, ensuring that the electrolyzer array is in the optimal operating power state. It can not only absorb surplus renewable energy, but also increase hydrogen production without increasing the cost of system equipment, and reduce the start-stop frequency of the electrolyzer, thereby improving the utilization rate and service life of the electrolyzer.

[0069] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0071] Figure 1 A flow chart of a method for allocating power of an electrolyzer array taking into account hydrogen production efficiency provided in Example 1;

[0072] Figure 2 It is a flowchart of executing the information output power allocation instruction in segments based on the allocation rule provided in Example 1;

[0073] Figure 3 A schematic diagram of a power distribution system for an electrolyzer array taking hydrogen production efficiency into account provided in Example 2. DETAILED DESCRIPTION

[0074] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0075] Example 1

[0076] This embodiment provides a method for allocating power of an electrolyzer array taking into account hydrogen production efficiency, comprising the following steps:

[0077] 1. Receive the power to be consumed and convert it into the power to be optimized for the electrolyzer array; the power to be consumed is subdivided into the power to be optimized with a time step of 1 hour.

[0078] 2. With the goal of maximizing the efficiency and hydrogen production of the electrolyzer array, the optimal power of the initial operation of the electrolyzer array is calculated, and the segmented execution information is obtained based on the set allocation rules according to the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array, as follows:

[0079] 2.1 The constructed electrolyzer array voltage model and electrolyzer array efficiency model are as follows:

[0080] U el =U rev +U ohm +U act

[0081] Where: U el is the cell voltage; U rev is the reversible voltage of the electrolytic cell; U ohm is the ohmic overvoltage of the electrolytic cell; U act The electrolytic cell activation overvoltage;

[0082]

[0083] U0=1.229-0.9×10 -3 (T-298)

[0084] Where: U0 is the reversible voltage under standard pressure; R is the ideal gas constant; T is the working temperature of the electrolytic cell; z is the number of molar electrons participating in the reaction during the electrolysis process; F is the Faraday constant; is the partial pressure of hydrogen; is the partial pressure of oxygen; is the activity of water between the electrode and the proton membrane; p0 is the standard atmospheric pressure:

[0085]

[0086]

[0087] Where: j is the working current density of the electrolytic cell; t m is the thickness of the proton exchange membrane; σ m is the conductivity of the proton exchange membrane; λ is the water content of the proton exchange membrane;

[0088] The electrolyzer array efficiency is as follows:

[0089] η=η v η F

[0090] M=f3P el η

[0091] Where: η is the total efficiency of the electrolyzer; η v is the voltage efficiency; η F is the current efficiency; M is the hydrogen production; P el is the total real-time output power of the electrolyzer array, in kW; f3 is the hydrogen production coefficient, in kg / kW;

[0092]

[0093] Where: U th is the thermal neutral voltage; f1 and f2 represent Faraday related parameters.

[0094] 2.2 Based on the electrolyzer array voltage model and electrolyzer array efficiency model, establish the objective function of maximizing the electrolyzer array efficiency and hydrogen production, and set the electrolyzer array operation constraints;

[0095] The objective function for maximizing the efficiency and hydrogen production of the electrolyzer array is as follows:

[0096]

[0097] The operating constraints of the electrolyzer array are as follows:

[0098] The current density of the electrolyzer array is set as follows: 0.2 <j<2.0

[0099] Electrolyzer array real-time power Total output power: 20% P rat <P el <P rat , P rat is the rated power of the electrolyzer array;

[0100] 2.3 Based on the operation constraints of the electrolytic cell array, the objective function is solved by the particle swarm optimization algorithm to obtain the optimal initial operation power P0 of the electrolytic cell array as follows:

[0101] Initialize the position of each particle, the search speed and the maximum number of iterations, and randomly generate a set of possible solutions, each of which represents a set of solutions;

[0102] Calculate the fitness and continuously update the global optimal point and the historical optimal point of each particle;

[0103] Determine whether the constraints are met and the maximum number of iterations is reached, and continue iterating;

[0104] Output the optimal solution and obtain the initial operating optimal power P0.

[0105] 2.4 Calculation of the power P to be optimized for the electrolyzer arrayelt The difference e1 between the initial operation optimal power P0 and the segment execution information is obtained based on the set allocation rules.

[0106] 3. Outputting a power allocation instruction based on the segmented execution information; each electrolyzer in the electrolyzer array adjusts the power input according to the power allocation instruction, as follows:

[0107] When e1 = -P0, the power distribution instruction of the electrolytic cell array power is 0. el =0;

[0108] When -P0<e1<0, the power allocation instruction is output to operate k1 electrolyzers and the other electrolyzers are not in operation, where the sum of the hydrogen production power of k1 electrolyzers is equal to the initial optimal power. At this time, P el =P0;

[0109] When e1 = 0, the power allocation instruction for the electrolyzer array to continue to operate at the current power is output. At this time, P el =P0;

[0110] like Figure 2 As shown, when 0<e1<e 1max , output the power allocation instruction for the electrolyzer array to operate at the initial optimal power P0; output the power allocation instruction for n electrolyzers to increase the power by 10kW in sequence. If the total hydrogen production power does not meet the feedback error e2, then start from the first electrolyzer and increase by 10kW in sequence until the total hydrogen production power does not meet the feedback error e2. At this time, P el =k2P a +(n-k2)P b , initial P b =P0, each additional round, P b =P b +10, P eli =P a (i=1,2,...,k2),P eli =P b (i=k2+1,k2+2,...,n).

[0111] when Output the power allocation instruction for the electrolyzer array to continue to operate at the current power. At this time, P el =P rat , P rat is the total rated power of the electrolyte array.

[0112] 4. Total hydrogen production power P of electrolyzer array el If the set feedback error e2 is not met, the power P of the electrolytic cell array to be optimized is adjusted. elt , and re-optimize the power P of the electrolyzer arrayelt The optimal power P0 of the electrolyzer array is output in sections to execute information and power allocation instructions until the total hydrogen production power P el Satisfy the set feedback error e2.

[0113] In this embodiment, the feedback error e2 is set to the total hydrogen production power P of the electrolyzer array. el and the electrolyzer array to be optimized power P elt The difference is not less than zero, or the total hydrogen production power P of the electrolyzer array el Equal to the total rated power of the electrolyzer array.

[0114] Example 2

[0115] like Figure 3 As shown, this embodiment provides an electrolyzer array power distribution system taking hydrogen production efficiency into account, including:

[0116] A power input module, used for receiving the power to be consumed and converting the power to be consumed into the power to be optimized for the electrolyzer array;

[0117] A segment selection switch is used to calculate the optimal power for the initial operation of the electrolyzer array with the goal of maximizing the efficiency and hydrogen production of the electrolyzer array, and output segment execution information based on the power to be optimized of the electrolyzer array and the optimal power for the initial operation of the electrolyzer array according to the set allocation rules;

[0118] A segment controller, configured to output a power allocation instruction based on the segment execution information;

[0119] The actuator is used to adjust and control the power input of each electrolyzer in the electrolyzer array according to the power allocation instruction.

[0120] The system also includes: a total hydrogen production power P of the electrolyzer array el If the set feedback error e2 is not met, the power P of the electrolytic cell array to be optimized is adjusted. elt , and re-optimize the power P of the electrolyzer array elt The optimal power P0 of the electrolyzer array is output in sections to execute information and power allocation instructions until the total hydrogen production power P el The feedback error e2 is set to meet the set feedback error. In this embodiment, the feedback error e2 is set to the total hydrogen production power P of the electrolyzer array. el and the electrolyzer array to be optimized power P elt The difference is not less than zero, or the total hydrogen production power P of the electrolyzer array el Equal to the total rated power of the electrolyzer array.

[0121] The method aims to maximize the efficiency and hydrogen production of the electrolyzer array, calculate the optimal power of the initial operation of the electrolyzer array, and output segmented execution information based on the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array according to the set allocation rules, specifically including:

[0122] The constructed electrolyzer array voltage model and electrolyzer array efficiency model;

[0123] Based on the electrolyzer array voltage model and electrolyzer array efficiency model, an objective function for maximizing the electrolyzer array efficiency and hydrogen production is established, and operating constraints of the electrolyzer array are set;

[0124] Based on the operating constraints of the electrolytic cell array, the objective function is solved by a particle swarm optimization algorithm to obtain the initial operating optimal power P0 of the electrolytic cell array;

[0125] Calculate the power P to be optimized for the electrolyzer array elt The difference e1 from the initial operation optimal power P0 is used to output the segment execution information based on the set allocation rules.

[0126] The set allocation rules specifically include:

[0127] When e1 = -P0, the controller N in the segmented controller outputs a power allocation instruction for the electrolyzer array power to be 0;

[0128] When -P0<e1<0, the controller M1 in the segmented controller outputs a power allocation instruction that k1 electrolyzers are in operation and the remaining electrolyzers are not in operation; wherein the sum of the hydrogen production powers of the k1 electrolyzers is equal to the initial operation optimal power;

[0129] When e1=0, the controller Z in the segmented controller outputs a power allocation instruction for the electrolyzer array to continue to operate at the current power;

[0130] When 0<e1<e 1max , the controller M2 in the segmented controller outputs a power allocation instruction for the electrolyzer array to operate at the initial optimal operating power P0; it outputs a power allocation instruction for increasing the power of n electrolyzers in sequence. If the total hydrogen production power does not meet the feedback error e2, it will increase in sequence starting from the first electrolyzer until the total hydrogen production power does not meet the feedback error e2.

[0131] when The controller P in the segmented controller outputs a power allocation instruction for the electrolyzer array to continue operating at the current power.

[0132] Example 3

[0133] This embodiment provides a computer storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the electrolyzer array power allocation method based on hydrogen production efficiency as described in Example 1 are implemented.

[0134] Example 4

[0135] The present invention also provides an electronic device, comprising a memory and a processor: the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions, and when the computer-executable instructions are executed by the processor, the steps of the electrolyzer array power allocation method based on hydrogen production efficiency as described in Example 1 are implemented.

[0136] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0137] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks in the flowchart and / or block diagram 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 flowchart and / or block diagram. 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.

[0138] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0139] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0140] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A method for allocating power of an electrolyzer array taking into account hydrogen production efficiency, characterized in that: The following steps are involved: Receiving the electricity to be consumed and converting the electricity to be consumed into the power to be optimized for the electrolyzer array; Taking the maximization of the efficiency and hydrogen production of the electrolyzer array as the goal, the optimal power of the initial operation of the electrolyzer array is calculated, and the segmented execution information is obtained based on the set allocation rules according to the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array; A power allocation instruction is obtained based on the segmented execution information; each electrolyzer in the electrolyzer array adjusts the hydrogen production power of the electrolyzer accordingly according to the power allocation instruction.

2. The method for distributing power of an electrolyzer array taking into account hydrogen production efficiency according to claim 1, characterized in that: The method also includes: if the total hydrogen production power of the electrolyzer array does not meet the set feedback error, the power of the electrolyzer array to be optimized is adjusted, and the segmented execution information and power allocation instructions are re-executed according to the power of the electrolyzer array to be optimized and the optimal power output of the initial operation of the electrolyzer array until the total hydrogen production power of the electrolyzer array meets the set feedback error; the total hydrogen production power of the electrolyzer array is the sum of the hydrogen production powers of each electrolyzer.

3. The method for distributing power of an electrolyzer array taking into account hydrogen production efficiency according to claim 2, characterized in that: With the goal of maximizing the efficiency and hydrogen production of the electrolyzer array, the optimal power of the initial operation of the electrolyzer array is calculated, and the segmented execution information is obtained based on the set allocation rules according to the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array, which specifically includes: The constructed electrolyzer array voltage model and electrolyzer array efficiency model; Based on the electrolyzer array voltage model and electrolyzer array efficiency model, an objective function for maximizing the electrolyzer array efficiency and hydrogen production is established, and operating constraints of the electrolyzer array are set; Based on the operating constraints of the electrolytic cell array, the objective function is solved by a particle swarm optimization algorithm to obtain the optimal power for the initial operation of the electrolytic cell array; The difference between the power to be optimized and the initial optimal power of the electrolyzer array is calculated, and the segmented execution information is obtained based on the set allocation rules.

4. The method for distributing power of an electrolyzer array taking into account hydrogen production efficiency according to claim 3, characterized in that: The set allocation rules specifically include: When e1 = -P0, the power allocation instruction for the electrolyzer array power to be 0 is output; When -P0<e1<0, output the power allocation instruction that k1 electrolyzers are in operation and the other electrolyzers are not in operation, wherein the sum of the hydrogen production powers of the k1 electrolyzers is equal to the initial operation optimal power; When e1=0, the power allocation instruction for the electrolyzer array to continue to operate at the current power is output; When 0<e1<e 1max , output each electrolyzer array to operate at the initial optimal power, and then gradually increase the power of n electrolyzers until the total hydrogen production power meets the power allocation specified by the feedback error; when Outputting a power allocation instruction for the electrolyzer array to continue operating at the current power; The feedback error is set such that the difference between the total hydrogen production power of the electrolyzer array and the power to be optimized of the electrolyzer array is not less than zero, or the total hydrogen production power of the electrolyzer array is equal to the total rated power of the electrolyzer array; Where e1 is the difference between the power to be optimized and the initial optimal power of the electrolyzer array; e 1max is the maximum difference between the power to be optimized and the optimal power of the initial operation of the electrolyzer array, which is specifically equal to the difference between the rated power of the electrolyzer array and the optimal power of the initial operation; P0 is the optimal power of the initial operation of the electrolyzer array; P eli is the hydrogen production power of each electrolyzer; n is the total number of electrolyzers in the electrolyzer array, k1 <n。 5. The method for distributing power of an electrolyzer array taking into account hydrogen production efficiency according to claim 4, characterized in that: When 0<e1<e 1max , output each electrolyzer array to operate at the initial optimal power, and then gradually increase the power of n electrolyzers until the total hydrogen production power meets the power allocation specified by the feedback error, specifically including; When 0<e1<e 1max , outputting a power allocation instruction for the electrolyzer array to operate at the optimal power for initial operation; Output power allocation instructions for increasing the power of n electrolyzers in sequence. If the total hydrogen production power does not meet the feedback error, it will increase in sequence starting from the first electrolyzer until the total hydrogen production power does not meet the feedback error.

6. An electrolyzer array power distribution system taking into account hydrogen production efficiency, characterized in that: include: A power input module, used for receiving the power to be consumed and converting the power to be consumed into the power to be optimized for the electrolyzer array; A segment selection switch is used to calculate the optimal power for the initial operation of the electrolyzer array with the goal of maximizing the efficiency and hydrogen production of the electrolyzer array, and obtain segment execution information based on the power to be optimized of the electrolyzer array and the optimal power for the initial operation of the electrolyzer array based on the set allocation rules; A segment controller, configured to obtain a power allocation instruction based on the segment execution information; The actuator is used to adjust and control the corresponding hydrogen production power of each electrolyzer in the electrolyzer array according to the power allocation instruction.

7. The electrolyzer array power distribution system taking hydrogen production efficiency into account according to claim 6, characterized in that: The system also includes: if the total hydrogen production power of the electrolyzer array does not meet the set feedback error, the power of the electrolyzer array to be optimized is adjusted, and the segmented execution information and power allocation instructions are re-executed according to the power of the electrolyzer array to be optimized and the optimal power output of the initial operation of the electrolyzer array until the total hydrogen production power meets the set feedback error.

8. The electrolyzer array power distribution system taking hydrogen production efficiency into account according to claim 7, characterized in that: The method aims to maximize the efficiency and hydrogen production of the electrolyzer array, calculate the optimal power of the initial operation of the electrolyzer array, and obtain segmented execution information based on the power to be optimized of the electrolyzer array and the optimal power of the initial operation of the electrolyzer array according to the set allocation rules, specifically including: The constructed electrolyzer array voltage model and electrolyzer array efficiency model; Based on the electrolyzer array voltage model and electrolyzer array efficiency model, an objective function for maximizing the electrolyzer array efficiency and hydrogen production is established, and operating constraints of the electrolyzer array are set; Based on the operating constraints of the electrolytic cell array, the objective function is solved by a particle swarm optimization algorithm to obtain the optimal power for the initial operation of the electrolytic cell array; The difference between the power to be optimized and the initial optimal power of the electrolyzer array is calculated, and the segmented execution information is obtained based on the set allocation rules.

9. The electrolyzer array power distribution system taking hydrogen production efficiency into account according to claim 7, characterized in that: The set allocation rules specifically include: When e1 = -P0, the power allocation instruction for the electrolyzer array power to be 0 is output; When -P0<e1<0, output the power allocation instruction that k1 electrolyzers are in operation and the other electrolyzers are not in operation, wherein the sum of the hydrogen production powers of the k1 electrolyzers is equal to the initial operation optimal power; When e1=0, the power allocation instruction for the electrolyzer array to continue to operate at the current power is output; When 0<e1<e 1max , output each electrolyzer array to operate at the initial optimal power, and then gradually increase the power of n electrolyzers until the total hydrogen production power meets the power allocation specified by the feedback error; when Outputting a power allocation instruction for the electrolyzer array to continue operating at the current power; The feedback error is set such that the difference between the total hydrogen production power of the electrolyzer array and the power to be optimized of the electrolyzer array is not less than zero, or the total hydrogen production power of the electrolyzer array is equal to the total rated power of the electrolyzer array; Where e1 is the difference between the power to be optimized and the initial optimal power of the electrolyzer array; e 1max is the maximum difference between the power to be optimized and the optimal power of the initial operation of the electrolyzer array, which is specifically equal to the difference between the rated power of the electrolyzer array and the optimal power of the initial operation; P0 is the optimal power of the initial operation of the electrolyzer array; P eli is the hydrogen production power of each electrolyzer; n is the total number of electrolyzers in the electrolyzer array, k1 <n。 10. The electrolyzer array power distribution system taking hydrogen production efficiency into account according to claim 9, characterized in that: When 0<e1<e 1max , the output electrolyzer array operates at the initial optimal power, and then gradually increases the power of n electrolyzers until the total hydrogen production power meets the power allocation specified by the feedback error, specifically including; When 0<e1<e 1max , outputting a power allocation instruction for the electrolyzer array to operate at the optimal power for initial operation; Output power allocation instructions for increasing the power of n electrolyzers in sequence. If the total hydrogen production power does not meet the feedback error, it will increase in sequence starting from the first electrolyzer until the total hydrogen production power does not meet the feedback error.

11. A computer storage medium, wherein the computer readable storage medium stores a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for allocating power of an electrolyzer array based on taking hydrogen production efficiency into account as described in any one of claims 1 to 5 are implemented.

12. An electronic device, characterized in that: It comprises a memory and a processor: the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the electrolyzer array power allocation method based on taking into account the hydrogen production efficiency as described in any one of claims 1 to 5 are implemented.

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