New energy electric hydrogen production system optimization control method and device based on value rotation strategy, equipment, medium and product
By optimizing the operation of the electrolyzer through a rotation strategy, the problems of uneven aging of the electrolyzer and fluctuations in wind and solar power output were solved, and the stable operation of the electro-hydrogen production system and efficient hydrogen production were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTH CHINA ELECTRIC POWER UNIV
- Filing Date
- 2026-01-20
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional electrolyzer control strategies fail to effectively balance the operating time and start-stop frequency of electrolyzers, resulting in significant differences in aging, which affects system efficiency and maintenance costs. Furthermore, they are unable to cope with the fluctuations in wind and solar power output, leading to wind and solar curtailment.
A rotation strategy is adopted to optimize the operation of the electrolyzers. By acquiring wind and solar power generation information, the working status of the electrolyzer array is determined, and the electrolyzers are rotated and optimized according to a certain cycle to balance their operating time and start-stop frequency, and to allocate the operation of the electrolyzers under different states.
It has enabled the stable operation of the new energy-based hydrogen production system, improved the service life of the electrolyzer and the operating efficiency of the system, reduced maintenance costs, and enhanced adaptability to wind and solar power output.
Smart Images
Figure CN122013254A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of energy optimization control, and in particular to an optimization control method, device, equipment, medium and product for a new energy electric hydrogen production system based on a rotation strategy. Background Technology
[0002] With the rapid development of renewable energy sources such as wind power and photovoltaics, their installed capacity continues to expand and their proportion in the power system is constantly increasing. However, due to the intermittent, random, and fluctuating nature of wind and solar power output, large-scale direct grid connection will significantly impact the grid's peak-shaving capacity, stability margin, and safe operation. Furthermore, it will lead to a large amount of renewable energy not being effectively utilized, resulting in serious energy waste problems such as wind and solar curtailment. To improve the local consumption level of new energy, introducing flexible loads with rapid power adjustment capabilities has become a key technological path. Electrolytic water hydrogen production equipment, with its fast response speed and wide-range power adjustment capabilities, can flexibly match the fluctuating characteristics of wind and solar power output, effectively reducing the impact of new energy grid connection on the power grid. It is an important means to improve the capacity for new energy consumption and support the development of new power systems.
[0003] By converting excess electrical energy into hydrogen, not only can electrical energy be effectively stored, but it can also provide energy security for the future low-carbon economy. Alkaline water electrolysis is a common method for producing hydrogen from water. The core equipment is the alkaline electrolyzer, whose array design usually consists of multiple electrolyzers connected in series and parallel. However, in traditional electrolyzer control strategies, the impact of operating time and the number of start-stop cycles on the lifespan of the electrolyzer is often overlooked. During long-term operation, this can lead to severe unevenness in the operating time and the number of start-stop cycles among different electrolyzers, resulting in significant differences in the degree of aging among them. This uneven aging not only leads to decreased system efficiency but also increases maintenance costs. Furthermore, uneven aging of electrolyzers not only increases the cost of individual unit repairs but also exacerbates the overall system maintenance complexity and energy consumption costs. Specifically: when a single electrolyzer ages or fails, replacing only individual components is not only complex and costly but also makes it difficult to match the performance with new equipment; as some electrolyzers age, their operational stability decreases, requiring more frequent inspections and calibrations, increasing maintenance workload and downtime losses; when a few electrolyzers in the array show significant aging, additional inspections and maintenance are needed to maintain system stability, further increasing maintenance costs; the increased resistance of the electrode plates in aging electrolyzers can easily cause localized heat generation and decreased energy efficiency, increasing the risk of overheating, leakage, and other malfunctions. In summary, uneven aging of electrolyzers not only increases the cost of individual unit repairs but also exacerbates the overall system maintenance complexity and energy consumption costs. Therefore, how to rationally arrange the electrolyzers to achieve more balanced operation and extend the overall service life of the system has become an important task for improving the economy and reliability of grid-connected electrohydrogen production systems. Summary of the Invention
[0004] The purpose of this application is to provide an optimized control method, device, equipment, medium, and product for a new energy electric hydrogen production system based on a rotation strategy, which can achieve balanced allocation of the new energy electric hydrogen production system and improve regulation performance and operational stability.
[0005] To achieve the above objectives, this application provides the following solution: In a first aspect, this application provides an optimized control method for a new energy electric hydrogen production system based on a rotation strategy. This optimized control method is applied to an electric hydrogen production system. The electric hydrogen production system includes an alkaline electrolyzer, which uses an alkaline electrolyte as the electrolysis medium. The optimized control method for a new energy electric hydrogen production system based on a rotation strategy includes: Acquire wind and solar power generation information data; the wind and solar power generation information data includes: wind and solar power output information; The operating status information of the alkaline electrolyzer is determined based on the characteristics of the alkaline electrolyzer and the working constraints. Based on actual load demand information, the number of alkaline electrolyzers in the electrolyzer array is configured according to the operating status information, and the operating status of the electrolyzer array is determined based on the wind and solar power generation information data. A rotation strategy is adopted to allocate the operating status and operating time of each alkaline electrolyzer in the electrolyzer array according to the working status of the electrolyzer array, so as to determine the rotation allocation information; the rotation allocation information is used to optimize the control of the new energy electric hydrogen production system and realize the stable operation of the new energy electric hydrogen production system.
[0006] In one embodiment, the initial capacity configuration of the electrolyzer array is such that the total overload power is always not less than the maximum wind and solar power output that the electro-hydrogen production system can withstand. ; ; The operating states of the electrolytic cell array include: overload operation, normal operation, and low power operation. when At this time, the electrolytic cell array operates in an overload state, and the power absorbed by the electrolytic cell array at this time is... and maximum absorption capacity for: ; ; ; when At this time, the electrolytic cell array is in normal operating condition, and the power absorbed by the electrolytic cell array is... and maximum absorption capacity for: ; ; when At this time, the electrolytic cell array operates in a low-power state, and the power absorbed by the electrolytic cell array at this time is... and maximum absorption capacity for: ; ; in, The information for wind and solar power output indicates the total output of wind power and solar power generation. The number of alkaline electrolytic cells used for the consumption of wind and solar power; This refers to the rated operating power. The overload operating power of a single alkaline electrolytic cell; Power under fluctuating operating conditions; This is the maximum overload factor for the alkaline electrolytic cell; This refers to the number of alkaline electrolytic cells in the electrolytic cell array that are operating under overload conditions. This refers to the number of alkaline electrolyzers operating at low power in the electrolyzer array.
[0007] In one embodiment, the rotation rules corresponding to the rotation strategy specifically include: According to a set cycle, the alkaline electrolyzers in different operating states are rotated for optimization control, so that each alkaline electrolyzer in the electrolyzer array is in the rated operating state, the minimum operating state, and the fluctuating operating state in sequence; wherein, the minimum operating state is the working state of the alkaline electrolyzer when the wind and solar power output in the wind and solar power output information is lower than the preset value, and the preset minimum hydrogen production is maintained. right The alkaline electrolyzers that participate in the consumption of wind and solar power are sorted and numbered to obtain the electrolyzer sequence after numbering; In the Tth cycle, the first k alkaline electrolyzers are set to rated operation according to the numbered sequence, the last alkaline electrolyzer is set to fluctuate operation, and the remaining... Each alkaline electrolyzer is operating at its lowest operating level; In the During each cycle, the first alkaline electrolyzer is set to fluctuate in operation according to the numbered sequence, and the second to the third... Each alkaline electrolyzer is operating at its rated capacity, with the remaining... Each alkaline electrolyzer is operating at its lowest operating level; In the During the first cycle, according to the numbered electrolytic cell sequence, the second alkaline electrolytic cell is set to fluctuate in operation, and the third to the... Each alkaline electrolyzer is operating at its rated capacity, with the remaining... Each alkaline electrolyzer is operating at its lowest operating level; The rotation cycle is ; ; This refers to the allowable downtime for an alkaline electrolyzer. This refers to the permissible period of fluctuating operation for an alkaline electrolyzer. This refers to the time during which an alkaline electrolyzer can operate below the safe operating power for hydrogen production.
[0008] In one embodiment, when the electrolytic cell array is in an overload operation state, a rotation strategy is adopted to allocate the operating state and operating time of each alkaline electrolytic cell in the electrolytic cell array according to the operating state of the array, so as to determine the rotation allocation information, specifically including: Find the minimum number of electrolytic cells required for full overload operation when the wind and solar power output is absorbed. : ; The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: ; Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: ; in, The operating power of the first alkaline electrolyzer; The operating power of the second alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell.
[0009] In one embodiment, when the electrolytic cell array is in normal operation, a rotation strategy is used to allocate the operating status and operating time of each alkaline electrolytic cell in the array according to the operating status of the array, in order to determine the rotation allocation information, specifically including: The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: ; Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: .
[0010] In one embodiment, when the electrolytic cell array is in a low-power operation state, a rotation strategy is adopted to allocate the operating state and operating time of each alkaline electrolytic cell in the electrolytic cell array according to the operating state of the array, so as to determine the rotation allocation information, specifically including: Determine the minimum number of electrolytic cells required for full utilization of wind and solar power output. : ; The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: ; Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: ; in, For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell.
[0011] Secondly, this application provides an optimized control device for a new energy electric hydrogen production system based on a rotation strategy, comprising: The data acquisition module is used to acquire wind and solar power generation information data; the wind and solar power generation information data includes: wind and solar power output information; The operating status information determination module is used to determine the operating status information of the alkaline electrolyzer; the operating status information is determined based on the characteristics of the alkaline electrolyzer and the working constraints. The working status determination module is used to configure the number of alkaline electrolyzers in the electrolyzer array based on the actual load demand information and the operating status information, and to determine the working status of the electrolyzer array based on the wind and solar power generation information data. The rotation allocation module is used to allocate the operating status and operating time of each alkaline electrolyzer in the electrolyzer array according to the working status of the electrolyzer array using a rotation strategy, so as to determine the rotation allocation information; the rotation allocation information is used to optimize the control of the new energy electric hydrogen production system and realize the stable operation of the new energy electric hydrogen production system.
[0012] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the above-described optimization control method for a new energy electric hydrogen production system based on a rotation strategy.
[0013] Fourthly, this application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the aforementioned optimized control method for a new energy electric hydrogen production system based on a rotation strategy.
[0014] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the aforementioned optimized control method for a new energy electric hydrogen production system based on a rotation strategy.
[0015] According to the specific embodiments provided in this application, the following technical effects are disclosed: This application provides an optimized control method, device, equipment, medium, and product for a new energy electro-hydrogen production system based on a rotation strategy. It determines the operating status information of alkaline electrolyzers; configures the number of alkaline electrolyzers in the electrolyzer array based on actual load demand information and the operating status information; and determines the working status of the electrolyzer array based on wind and solar power generation data. Considering the differences in electrolyzer operating time and start-stop frequency, it performs rotation optimization control on electrolyzers in different operating states according to a certain cycle. Specifically, it uses a rotation strategy to allocate the operating status and operating time of each alkaline electrolyzer in the electrolyzer array according to the working status of the array, thereby determining the rotation allocation information and improving the operating efficiency and new energy absorption capacity of the electro-hydrogen production system. Therefore, this application can achieve balanced allocation of the new energy electro-hydrogen production system, improving regulation performance and operational stability. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A flowchart of an optimized control method for a new energy electric hydrogen production system based on a rotation strategy; Figure 2 A schematic diagram of the technical process for optimizing the control method of a new energy electric hydrogen production system based on a rotation strategy; Figure 3 This is a schematic diagram of six operating states of an electrolytic cell; Figure 4 This is a schematic diagram of the rotation rules for the electrolytic cell array; Figure 5 Flowchart for optimizing the rotation control of the electrolytic cell array; Figure 6 A structural diagram of an optimized control device for a new energy electric hydrogen production system based on a rotation strategy; Figure 7 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] This application achieves balanced operation of electrolyzer equipment. First, based on the power differences between different operating states of the electrolyzer, it divides the electrolyzer into six operating states. Then, according to the wind and solar power output, it solves the working state of the electrolyzer array to match the new energy output. Finally, considering the differences in electrolyzer operating time and start-stop frequency, it performs rotational optimization control of the electrolyzers in different operating states according to a certain cycle, thereby improving the operating efficiency of the electro-hydrogen production system and the new energy consumption capacity.
[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] In one exemplary embodiment, an optimized control method for a new energy electric hydrogen production system based on a rotation strategy is provided. The optimized control method for a new energy electric hydrogen production system based on a rotation strategy is applied to an electric hydrogen production system. The electric hydrogen production system includes an alkaline electrolyzer and uses an alkaline electrolyte as the electrolysis medium.
[0022] like Figure 1 As shown, the optimized control method for the new energy electric hydrogen production system based on the rotation strategy includes: Step 100: Obtain wind and solar power generation information data. This includes wind and solar power output information.
[0023] Step 200: Determine the operating status information of the alkaline electrolyzer. The operating status information is determined based on the characteristics of the alkaline electrolyzer and the operational constraints.
[0024] Step 300: Based on actual load demand information, configure the number of alkaline electrolyzers in the electrolyzer array according to the operating status information, and determine the operating status of the electrolyzer array based on wind and solar power generation information data.
[0025] Step 400: A rotation strategy is employed to allocate the operating status and time of each alkaline electrolyzer in the electrolyzer array based on its working state, thus determining the rotation allocation information. This rotation allocation information is used for optimized control of the new energy hydrogen production system, achieving its stable operation.
[0026] The initial capacity configuration of the electrolyzer array is such that the total overload power is always not less than the maximum wind and solar power output that the electro-hydrogen production system can withstand. ; .
[0027] The operating states of the electrolytic cell array include: overload operation, normal operation, and low power operation.
[0028] when At this time, the electrolytic cell array operates in an overload state, and the power absorbed by the electrolytic cell array at this time is... and maximum absorption capacity for: .
[0029] .
[0030] .
[0031] when At this time, the electrolytic cell array is in normal operating condition, and the power absorbed by the electrolytic cell array is... and maximum absorption capacity for: .
[0032] .
[0033] when At this time, the electrolytic cell array operates in a low-power state, and the power absorbed by the electrolytic cell array at this time is... and maximum absorption capacity for: .
[0034] .
[0035] in, The information for wind and solar power output indicates the total output of wind power and solar power generation. The number of alkaline electrolytic cells used for the consumption of wind and solar power; This refers to the rated operating power. The overload operating power of a single alkaline electrolytic cell; Power under fluctuating operating conditions; This is the maximum overload factor for the alkaline electrolytic cell; This refers to the number of alkaline electrolytic cells in the electrolytic cell array that are operating under overload conditions. This refers to the number of alkaline electrolyzers operating at low power in the electrolyzer array.
[0036] The rotation rules corresponding to the rotation strategy specifically include: According to a set cycle, the alkaline electrolyzers in different operating states are rotated for optimization control, so that each alkaline electrolyzer in the electrolyzer array is in the rated operating state, the minimum operating state, and the fluctuating operating state in sequence; wherein, the minimum operating state is the working state of the alkaline electrolyzer when the wind and solar power output in the wind and solar power output information is lower than the preset value, and the preset minimum hydrogen production is maintained.
[0037] right The alkaline electrolyzers that participate in the consumption of wind and solar power are sorted and numbered to obtain the electrolyzer sequence.
[0038] In the Tth cycle, the first k alkaline electrolyzers are set to rated operation according to the numbered sequence, the last alkaline electrolyzer is set to fluctuate operation, and the remaining... Each alkaline electrolyzer is operating at its lowest operating level.
[0039] In the During each cycle, the first alkaline electrolyzer is set to fluctuate in operation according to the numbered sequence, and the second to the third... Each alkaline electrolyzer is operating at its rated capacity, with the remaining... Each alkaline electrolyzer is operating at its lowest operating level.
[0040] In the During the first cycle, according to the numbered electrolytic cell sequence, the second alkaline electrolytic cell is set to fluctuate in operation, and the third to the... Each alkaline electrolyzer is operating at its rated capacity, with the remaining... Each alkaline electrolyzer is operating at its lowest operating level.
[0041] The rotation cycle is : .
[0042] This refers to the allowable downtime for an alkaline electrolyzer. This refers to the permissible period of fluctuating operation for an alkaline electrolyzer. This refers to the time during which an alkaline electrolyzer can operate below the safe operating power for hydrogen production.
[0043] When the electrolytic cell array is in an overload operation state, a rotation strategy is adopted to allocate the operating state and operating time of each alkaline electrolytic cell in the array according to the operating state of the array, in order to determine the rotation allocation information, specifically including: Find the minimum number of electrolytic cells required for full overload operation when the wind and solar power output is absorbed. : .
[0044] The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: .
[0045] Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: .
[0046] in, The operating power of the first alkaline electrolyzer; The operating power of the second alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell.
[0047] When the electrolytic cell array is in normal operation, a rotation strategy is used to allocate the operating status and operating time of each alkaline electrolytic cell in the array according to the operating status of the array, in order to determine the rotation allocation information, specifically including: The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: .
[0048] Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: .
[0049] When the electrolytic cell array is operating at low power, a rotation strategy is used to allocate the operating status and time of each alkaline electrolytic cell in the array according to the operating status of the array, in order to determine the rotation allocation information, specifically including: Determine the minimum number of electrolytic cells required for full utilization of wind and solar power output. : .
[0050] The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: .
[0051] Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: .
[0052] in, For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell.
[0053] In practical applications, such as Figure 2 As shown, the operation steps of the method mentioned in this application are as follows: S1: The operating status of the electrolyzer is classified according to the characteristics of the alkaline electrolyzer and the working constraints.
[0054] S2: Based on the above electrolytic cell operating status, the working status of the electrolytic cell array should be reasonably arranged considering the wind and solar power output.
[0055] S3: Based on the above steps and combined with the rotation optimization control strategy, propose an optimization control method for a new energy electric hydrogen production system that considers the rotation strategy.
[0056] The specific execution process for each step is as follows: S1: The operating status of the electrolyzer is classified according to the characteristics of the alkaline electrolyzer and the working constraints.
[0057] Alkaline electrolyzers are commonly used equipment in electrolytic hydrogen production systems. They use an alkaline electrolyte as the electrolytic medium to decompose water into hydrogen and oxygen through the action of an electric current. During operation, the electrolyzer has specific requirements for temperature, pressure, and current, typically operating stably within a temperature range of 40-80℃. Alkaline electrolyzers are highly adjustable, capable of power regulation based on grid demand and fluctuations in renewable energy sources. However, prolonged overload or frequent start-stop cycles can affect their efficiency and lifespan.
[0058] The characteristics and operating constraints of alkaline electrolyzers mainly include start-up and shutdown characteristics, heat preservation characteristics, regulation characteristics, safe operating power for hydrogen, and regulation range. Details are as follows: Start-up and shutdown characteristics refer to the time required for an electrolytic cell to reach a stable operating state during startup and shutdown.
[0059] Thermal insulation characteristics refer to the ability of an electrolytic cell to maintain a certain operating temperature in order to ensure the stability and efficiency of the equipment.
[0060] The regulation characteristic refers to the ability of an electrolyzer to adjust its power according to grid demand or fluctuations in wind and solar power output, and the electrolyzer's operating power can exceed its rated power for a short period of time, operating in an overload state.
[0061] The safe operating power for hydrogen production refers to the power range within which the electrolyzer must operate to ensure the safety of hydrogen production.
[0062] The adjustable range characteristic refers to the fact that the electrolytic cell can operate under overload for a short period of time under certain conditions, but the overload operation time needs to be controlled and effective cooling measures need to be taken in a timely manner.
[0063] Based on the characteristics and operational constraints of the alkaline electrolyzer, and according to the electrolyzer's efficiency at different power levels, equipment load conditions, and lifespan management, the electrolyzer's operating states are divided into shutdown state, minimum operating state, optimal operating state, rated operating state, overload operating state, and fluctuating operating state. The relationship between the six operating states of the electrolyzer is as follows: Figure 3 As shown.
[0064] The shutdown state refers to the working state of the electrolyzer when the grid load is low or wind and solar power generation is insufficient. At this time, the electrolyzer will not consume electricity or produce hydrogen, thus avoiding unnecessary energy waste and extending the life of the equipment.
[0065] The minimum operating state refers to the working state of the electrolyzer when the wind and solar power output is at a low level, maintaining the minimum hydrogen production. At this time, the efficiency of the electrolyzer is low, but it is still running, ensuring some hydrogen production.
[0066] The optimal operating state refers to the working state of the electrolyzer when the wind and solar power output is relatively sufficient, and it operates in the optimal power range. At this time, the electrolyzer can produce hydrogen with high efficiency and will not age faster due to excessive load.
[0067] Rated operating condition refers to the working state of the electrolyzer when the wind and solar power output is stable and the grid load is high. Under this condition, the electrolyzer can provide sufficient hydrogen production and make full use of renewable energy.
[0068] Overload operation refers to the working state of an electrolyzer when grid demand is high or wind and solar power output increases significantly. In this state, the electrolyzer aims to maximize hydrogen production, but this state can lead to overheating, reduced efficiency, and shortened lifespan, and cannot be maintained for a long time.
[0069] Fluctuating operating state refers to the electrolytic cell operating power state being between the lowest operating power. and rated operating power This involves a time-varying operating state to absorb fluctuations in wind and solar power output. In this state, the electrolyzer adjusts its output power according to the changes in wind and solar power output. To adapt to grid demand and power output fluctuations.
[0070] The six operating states described above are not only based on the working characteristics of the electrolyzer, but also take into account its operating efficiency, equipment health, and the system's response to grid load and renewable energy fluctuations. Each state corresponds to a different operating power range, and is dynamically adjusted according to wind and solar power output and grid demand. This refined division of operating states allows for better management of the electrolyzer's power allocation, avoiding over-operation or inefficient operation, thereby improving the electrolyzer's efficiency and extending the equipment's lifespan.
[0071] S2: Based on the above electrolytic cell operating status, the working status of the electrolytic cell array should be reasonably arranged considering the power output of new energy wind and solar power.
[0072] In electrolytic hydrogen production systems, electrolyzers are typically configured in arrays, allowing the system to select an appropriate number of cells to operate based on actual load demands. Due to the significant fluctuations and intermittent nature of wind and solar power systems, the operating status of the electrolyzers must be flexibly adjusted to these changes to maximize system efficiency and hydrogen production, while preventing premature aging or damage caused by improper operation. Based on the six operating states of the electrolyzers defined by S1, the operating states of the electrolyzer array can be aggregated into overload operation, normal operation, and low-power operation.
[0073] Based on the wind and solar power output in the electro-hydrogen production system, the operating status of the electrolyzer array can be rationally arranged. Assume there are n electrolyzers in the array participating in the absorption of wind and solar power output, and the overload operating power of a single electrolyzer is... Rated operating power is The minimum operating power is The power during fluctuating operation is The total output of wind power and photovoltaic power is The capacity of the electrolyzer array is initially configured such that the total overload power of the array is always not less than the maximum wind and solar power output that the electro-hydrogen production system can withstand. ,Right now .
[0074] when At that time, the electrolytic cell array is arranged to operate in an overload state, that is, there are electrolytic cells in the array that are in an overload state, and the average operating power of a single electrolytic cell in the array is... Greater than the rated operating power, i.e. The electrolytic cell array is configured with k electrolytic cells operating under overload conditions. One electrolytic cell is operating at its rated capacity, and another is operating under fluctuating conditions. The power absorption capacity of the electrolytic cell array at this time is... and maximum absorption capacity for: (1) (2) (3) when At that time, the electrolytic cell array is arranged to operate in a normal operating state, that is, there are no electrolytic cells in the array that are in an overloaded operating state, and the average operating power of a single electrolytic cell in the array is [not specified]. Less than the rated operating power, i.e. The electrolytic cell array is configured with... One electrolytic cell is operating at its rated capacity, and another is operating under fluctuating conditions. What is the power absorption capacity of the electrolytic cell array at this time? and maximum absorption capacity for: (4) (5) when At this time, the electrolytic cell array is arranged to operate in a low-power state, meaning that at least one electrolytic cell in the array needs to be in a stopped state. The electrolytic cell array is configured to have k electrolytic cells in rated operating state. One electrolytic cell is in a stopped state, and another is in a fluctuating operating state. The power absorption capacity of the electrolytic cell array at this time is... and maximum absorption capacity for: (6) (7) S3: Based on the above steps and combined with the rotation optimization control strategy, an optimization control method for grid-connected new energy electric hydrogen production system considering the rotation strategy is proposed.
[0075] Based on the aforementioned classification of alkaline electrolyzer operating states and the reasonable arrangement of renewable energy (wind and solar) output in the electro-hydrogen production system, a rotation optimization control strategy is proposed, considering electrolyzer characteristics, fluctuations in wind and solar output, and optimization of the electrolyzer array. This strategy aims to improve system efficiency by rotating the operating states of the electrolyzers, ensuring that the electrolyzer array changes its operating state according to different wind and solar output conditions. Furthermore, rotating the operating states of the electrolyzers prevents a single electrolyzer from constantly operating under overload, thereby extending equipment lifespan and optimizing renewable energy consumption and hydrogen production efficiency.
[0076] This application employs a two-layer control strategy to optimize the operation of the electrolyzer array. Specifically, as described in step S2, the upper-layer control system acquires real-time data on wind and solar power generation and compares it with the maximum absorption capacity of the electrolyzers. Based on the wind and solar power output, it arranges the operating state of the electrolyzer array into overload operation, normal operation, or low-power operation, thus determining the overall operating state of the electrolyzer array. After determining the operating state of the electrolyzer array, the lower-layer control system first calculates the number of electrolyzers in each type of operating state based on the wind power output. Then, it further refines the task, solving for the number of electrolyzers that need to operate in the array under each type of operating state. Finally, it uses a rotation strategy to sequentially arrange the operating states of the electrolyzers.
[0077] In the lower-level optimization control, each electrolytic cell is first numbered, then the operating status of the electrolytic cell array is arranged according to the wind and solar power output, and finally the specific operating status of each electrolytic cell is set. For example, assuming that in the Tth cycle, k electrolytic cells numbered 1 to k are set to the rated operating state, and cells numbered 1 to k are set to the rated operating state, the following steps are taken: - of One electrolytic cell is operating at its lowest operating level, while the electrolytic cell numbered n is operating in a fluctuating state; the rotation cycle is set to... The formula is: (8) Then in the During each cycle, the electrolytic cell numbered 1 is in a fluctuating operating state, while the electrolytic cell numbered 2- k electrolytic cells are in rated operating condition, and are numbered as follows: -n The first electrolytic cell is operating at its lowest capacity; while the second... During each cycle, the electrolytic cell numbered 2 was in a fluctuating operating state, while the electrolytic cell numbered 3- k electrolytic cells are in rated operating condition, and are numbered 1 and 2. -n Each electrolytic cell is in its lowest operating state. Following the rotation strategy described above, electrolytic cells with different numbers are sequentially placed in their rated operating state, lowest operating state, and fluctuating operating state. Rotation optimization control of electrolytic cells in different operating states is performed at certain intervals to ensure a relatively balanced number of start-ups and shutdowns and operating time for each electrolytic cell, thereby optimizing cell operation and extending their service life.
[0078] A schematic diagram of the rotation rules of the electrolytic cell array is shown below. Figure 4 As shown.
[0079] This application sets a rotation optimization control strategy for the electrolytic cell array based on the wind and solar power output and the characteristics of the electrolytic cells. Based on the three operating states of the electrolytic cell array described in S2, the first step is to determine the number of electrolytic cells participating in the operation of the array. Without considering overload conditions and prioritizing the operation of the electrolytic cells at or below their rated operating conditions, this application prioritizes maximizing the average operating power of the electrolytic cells. Approaching rated power To determine the number of electrolyzers to participate in operation, an adaptive model for determining the number of electrolyzers based on wind and solar power output is established. Let the maximum number of electrolyzers be... First, the number of electrolytic cells m needs to satisfy: (9) Among all integers m that satisfy formula (9), the value of m that makes the average operating power of the electrolytic cells closest to the rated operating power is selected as the number of electrolytic cells in the parameter electrolytic cell array: (10) To ensure that the number of electrolytic cells starts and stops is not too frequent, this application further introduces a hysteresis constraint: if the number of electrolytic cells participating in operation in the previous control cycle is... And still satisfy In this cycle, the rotation strategy will remain unchanged. .
[0080] Only when And the system has a backup electrolytic cell that can be put into operation or The number of electrolytic cells n is only updated when some electrolytic cells need to be removed.
[0081] After determining the number n of electrolytic cells participating in the operation of the electrolytic cell array, the specific rotation strategy based on the three working states of the electrolytic cell array described in S2 is as follows.
[0082] (1) The electrolytic cell array is operating in an overload state.
[0083] At this point, the wind and solar power output in the electro-hydrogen production system is greater than the total rated power of the electrolyzer array, i.e. According to the electrolytic cell array rotation optimization control strategy, the electrolytic cell numbered n is first set to fluctuating operation, and then the electrolytic cells numbered 1 to k are sequentially set to overload operation, until the wind and solar power output is less than the total overload power of the k electrolytic cells, i.e. When performing sequential numbering, the following condition is always met: (11) The minimum number of electrolytic cells required for full overload operation when absorbing all wind and solar power output can be determined. : (12) Then numbered arrive The electrolytic cells are set to their rated operating state. In summary, the operating state of each electrolytic cell in the electrolytic cell array is set as follows: (13) Reaching the rotation cycle At that time, the operating status of each electrolytic cell in the electrolytic cell array is set as follows: (14) By adopting the above-mentioned rotation strategy to continuously rotate the operating status of the electrolyzers, the time that each electrolyzer is in an overloaded and fluctuating operating state can be averaged out, avoiding the unit from being in an overloaded operating state for a long time, which would cause the unit to overheat continuously. This also prevents the lifespan of a single electrolyzer from being shortened or the risk of failure from increasing due to long-term overload, thereby improving the overall stability and durability of the system.
[0084] (2) The electrolytic cell array is operating in normal operating condition.
[0085] At this time, the wind and solar power output of the electro-hydrogen system meets the requirements. According to the electrolytic cell array rotation optimization control strategy, the electrolytic cell numbered n is first set to fluctuating operation, and then the cells numbered 1 to n are sequentially rotated. The electrolytic cells are set to their rated operating state, and the operating state of each electrolytic cell in the electrolytic cell array is as follows: (15) Reaching the rotation cycle At that time, the operating status of each electrolytic cell in the electrolytic cell array is set as follows: (16) By adopting the above-mentioned rotation strategy to continuously rotate the operating status of the electrolyzers, the time that each electrolyzer is in a fluctuating operating state can be averaged. This helps to balance the dynamic power changes and thermal cycles that each electrolyzer is subjected to, and prevents the performance degradation or local overheating of a single electrolyzer under fluctuating operating conditions. This extends the equipment life and maintains the long-term power response capability of the system.
[0086] (3) The electrolytic cell array operates in a low-power operating state.
[0087] At this time, the wind and solar power output of the electro-hydrogen system meets the requirements. According to the electrolytic cell array rotation optimization control strategy, the electrolytic cell numbered n is first set to fluctuating operation, and then the electrolytic cells numbered 1 to k are sequentially set to rated operation, until the wind and solar power output is less than the total rated operating power of k electrolytic cells, i.e. When performing sequential numbering, the following condition is always met: (17) The minimum number of rated operating electrolytic cells required to fully absorb wind and solar power output can be determined. : (18) Set the operating status of each electrolytic cell in the electrolytic cell array to: (19) Reaching the rotation cycle At that time, the operating status of each electrolytic cell in the electrolytic cell array is set as follows: (20) By adopting the above-mentioned rotation strategy to continuously rotate the operating status of the electrolyzers, the operating time of each electrolyzer in a fluctuating operating state can be evenly distributed. It can also effectively control the downtime of the electrolyzers, so that the shut-down electrolyzers are kept in standby mode while maintaining a suitable temperature, avoiding the delay in restarting due to excessively low temperature. To a certain extent, this improves the rapid restart capability of the shut-down electrolyzers and maintains the overall rapid power response characteristics of the electrolyzer array, ensuring the flexible adjustment performance and operational stability of the system under fluctuating wind and solar power output conditions.
[0088] In summary, the operating status of the electrolyzer in the electro-hydrogen production system needs to be flexibly adjusted according to changes in wind and solar power output in order to maximize energy utilization efficiency and ensure stable system operation.
[0089] The flowchart of the electrolytic cell array rotation optimization control proposed in this application is as follows: Figure 5 As shown. In overload and low-power operation states, the number of electrolytic cells in both states is continuously increased until the wind and solar power output is absorbed, thus determining the number of electrolytic cells for each operation state. Then, based on the specific rotation strategy for the electrolytic cell array's operating states mentioned above, the operating state of each electrolytic cell is set, and finally, a periodic... Rotation will be carried out.
[0090] Traditional electrolyzer control methods often struggle to effectively match fluctuations in wind and solar power output, leading to significant curtailment of wind and solar power. This application, based on the characteristics and operational constraints of alkaline electrolyzers, classifies them into six operating states. By considering the fluctuations in wind and solar power output, the power distribution and operating states of the electrolyzers are rationally adjusted. This not only satisfies the demand for wind and solar power utilization but also allows more electrolyzers to operate at overload or rated capacity, increasing hydrogen production from the electro-hydrogen system. This strategy of adjusting operating states according to wind and solar power output ensures that the system fully utilizes renewable energy during peak periods, avoiding excessive energy waste.
[0091] Traditional electrolyzer scheduling methods often fail to consider equipment lifespan management, leading to some electrolyzers being under overload for extended periods and accelerating equipment aging. The proposed rotation-based optimized control strategy consists of two layers: the upper layer flexibly adjusts the operating status of the electrolyzer array based on wind and solar power output, while the lower layer balances electrolyzer power through a rotation strategy. This ensures a balanced distribution of operating time, power load, and start-stop frequency within the array, significantly reducing aging differences, extending the overall equipment lifespan, and minimizing unplanned maintenance and spare parts replacement costs, thereby effectively improving the system's economy and operational reliability.
[0092] This application establishes an adaptive model for determining the number of electrolytic cells based on wind and solar power output. By combining the rated power and overload power constraints of a single electrolytic cell, it achieves a dynamic optimal allocation of the number of operating electrolytic cells, *n*. This method can automatically determine a reasonable number of operating electrolytic cells under different wind and solar power outputs, ensuring that the total system load remains within a safe and efficient range and avoiding long-term overload or low-power operation of the electrolytic cells. This application introduces a hysteresis constraint mechanism. When wind and solar power output fluctuates within a certain range, the number of electrolytic cells, *n*, remains constant, and the fluctuations are addressed only through adjustments to the operating status of the electrolytic cells. This reduces thermal shock and lifespan loss caused by frequent start-ups and shutdowns of the electrolytic cells. While ensuring sufficient utilization of wind and solar power output, it effectively improves the operational stability and response speed of the electrolytic cell array, extends equipment lifespan, and reduces system maintenance costs.
[0093] In one exemplary embodiment, such as Figure 6 As shown, an optimized control device for a new energy electric hydrogen production system based on a rotation strategy is provided, comprising: The data acquisition module is used to acquire wind and solar power generation information data. The wind and solar power generation information data includes: wind and solar power output information.
[0094] The operating status information determination module is used to determine the operating status information of the alkaline electrolyzer. This operating status information is determined based on the characteristics of the alkaline electrolyzer and operational constraints.
[0095] The working status determination module is used to configure the number of alkaline electrolyzers in the electrolyzer array based on the actual load demand information and the operating status information, and to determine the working status of the electrolyzer array based on the wind and solar power generation information data.
[0096] The rotation allocation module is used to allocate the operating status and operating time of each alkaline electrolyzer in the electrolyzer array according to the working status of the electrolyzer array using a rotation strategy, so as to determine the rotation allocation information; the rotation allocation information is used to optimize the control of the new energy electric hydrogen production system and realize the stable operation of the new energy electric hydrogen production system.
[0097] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 7As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The database stores optimized control data for a new energy electric hydrogen production system based on a rotation strategy. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements the optimized control method for a new energy electric hydrogen production system based on a rotation strategy.
[0098] Those skilled in the art will understand that Figure 7 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0099] In one exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.
[0100] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.
[0101] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.
[0102] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.
[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0104] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. An optimized control method for a new energy electric hydrogen production system based on a rotation strategy, characterized in that, The optimization control method for new energy electric hydrogen production system based on the rotation strategy is applied to the electric hydrogen production system; The electro-hydrogen production system includes: an alkaline electrolyzer; the alkaline electrolyzer uses an alkaline electrolyte as the electrolysis medium; The optimized control method for a new energy electric hydrogen production system based on a rotation strategy includes: Acquire wind and solar power generation information data; the wind and solar power generation information data includes: wind and solar power output information; The operating status information of the alkaline electrolyzer is determined based on the characteristics of the alkaline electrolyzer and the working constraints. Based on actual load demand information, the number of alkaline electrolyzers in the electrolyzer array is configured according to the operating status information, and the operating status of the electrolyzer array is determined based on the wind and solar power generation information data. A rotation strategy is adopted to allocate the operating status and operating time of each alkaline electrolyzer in the electrolyzer array according to the working status of the electrolyzer array, so as to determine the rotation allocation information; the rotation allocation information is used to optimize the control of the new energy electric hydrogen production system and realize the stable operation of the new energy electric hydrogen production system.
2. The optimized control method for a new energy power-to-hydrogen system based on a rotation strategy according to claim 1, characterized in that, The initial capacity configuration of the electrolyzer array is such that the total overload power is always not less than the maximum wind and solar power output that the electro-hydrogen production system can withstand. ; ； The operating states of the electrolytic cell array include: overload operation, normal operation, and low power operation. when At this time, the electrolytic cell array operates in an overload state, and the power absorbed by the electrolytic cell array at this time is... and maximum absorption capacity for: ； ； ； when At this time, the electrolytic cell array is in normal operating condition, and the power absorbed by the electrolytic cell array is... and maximum absorption capacity for: ； ； when At this time, the electrolytic cell array operates in a low-power state, and the power absorbed by the electrolytic cell array at this time is... and maximum absorption capacity for: ； ； in, The information for wind and solar power output indicates the total output of wind power and solar power generation. The number of alkaline electrolytic cells used for the consumption of wind and solar power; This refers to the rated operating power. The overload operating power of a single alkaline electrolytic cell; Power under fluctuating operating conditions; This is the maximum overload factor for the alkaline electrolytic cell; This refers to the number of alkaline electrolytic cells in the electrolytic cell array that are operating under overload conditions. This refers to the number of alkaline electrolyzers operating at low power in the electrolyzer array.
3. The optimized control method for a new energy electric hydrogen production system based on a rotation strategy according to claim 2, characterized in that, The rotation rules corresponding to the rotation strategy specifically include: According to a set cycle, the alkaline electrolyzers in different operating states are rotated for optimization control, so that each alkaline electrolyzer in the electrolyzer array is in the rated operating state, the minimum operating state, and the fluctuating operating state in sequence; wherein, the minimum operating state is the working state of the alkaline electrolyzer when the wind and solar power output in the wind and solar power output information is lower than the preset value, and the preset minimum hydrogen production is maintained. right The alkaline electrolyzers that participate in the consumption of wind and solar power are sorted and numbered to obtain the electrolyzer sequence after numbering; In the Tth cycle, the first k alkaline electrolyzers are set to rated operation according to the numbered sequence, the last alkaline electrolyzer is set to fluctuate operation, and the remaining... Each alkaline electrolyzer is operating at its lowest operating level; In the During each cycle, the first alkaline electrolyzer is set to fluctuate in operation according to the numbered sequence, and the second to the third... Each alkaline electrolyzer is operating at its rated capacity, with the remaining... Each alkaline electrolyzer is operating at its lowest operating level; In the During the first cycle, according to the numbered electrolytic cell sequence, the second alkaline electrolytic cell is set to fluctuate in operation, and the third to the... Each alkaline electrolyzer is operating at its rated capacity, with the remaining... Each alkaline electrolyzer is operating at its lowest operating level; The rotation cycle is : ； This refers to the allowable downtime for an alkaline electrolyzer. This refers to the permissible period of fluctuating operation for an alkaline electrolyzer. This refers to the time during which an alkaline electrolyzer can operate below the safe operating power for hydrogen production.
4. The optimized control method for a new energy electric hydrogen production system based on a rotation strategy according to claim 2, characterized in that, When the electrolytic cell array is in an overload operation state, a rotation strategy is adopted to allocate the operating state and operating time of each alkaline electrolytic cell in the array according to the operating state of the array, in order to determine the rotation allocation information, specifically including: Find the minimum number of electrolytic cells required for full overload operation when the wind and solar power output is absorbed. : ； The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: ； Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: ； in, The operating power of the first alkaline electrolytic cell; The operating power of the second alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell.
5. The optimized control method for a new energy power-to-hydrogen system based on a rotation strategy according to claim 4, characterized in that, When the electrolytic cell array is in normal operation, a rotation strategy is used to allocate the operating status and operating time of each alkaline electrolytic cell in the array according to the operating status of the array, in order to determine the rotation allocation information, specifically including: The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: ； Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: 。 6. The optimized control method for a new energy power-to-hydrogen system based on a rotation strategy according to claim 4, characterized in that, When the electrolytic cell array is operating at low power, a rotation strategy is used to allocate the operating status and time of each alkaline electrolytic cell in the array according to the operating status of the array, in order to determine the rotation allocation information, specifically including: Determine the minimum number of electrolytic cells required for full utilization of wind and solar power output. : ； The operating status of each alkaline electrolyzer in the electrolyzer array is determined using a rotation strategy: ； Reaching the rotation cycle At that time, the operating status of each alkaline electrolytic cell in the electrolytic cell array is as follows: ； in, For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell; For the first Operating power of an alkaline electrolytic cell.
7. An optimized control device for a new energy power-to-hydrogen system based on a rotation strategy, characterized in that, include: The data acquisition module is used to acquire wind and solar power generation information data; The wind and solar power generation information data includes: wind and solar power output information; The operating status information determination module is used to determine the operating status information of the alkaline electrolyzer; the operating status information is determined based on the characteristics of the alkaline electrolyzer and the working constraints. The working status determination module is used to configure the number of alkaline electrolyzers in the electrolyzer array based on the actual load demand information and the operating status information, and to determine the working status of the electrolyzer array based on the wind and solar power generation information data. The rotation allocation module is used to allocate the operating status and operating time of each alkaline electrolyzer in the electrolyzer array according to the working status of the electrolyzer array using a rotation strategy, so as to determine the rotation allocation information; the rotation allocation information is used to optimize the control of the new energy electric hydrogen production system and realize the stable operation of the new energy electric hydrogen production system.
8. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the optimized control method for a new energy electric hydrogen production system based on a rotation strategy as described in any one of claims 1-6.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the optimization control method for a new energy electric hydrogen production system based on a rotation strategy as described in any one of claims 1-6.
10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the optimization control method for a new energy electric hydrogen production system based on a rotation strategy as described in any one of claims 1-6.