Large-scale electrolytic cell cluster rotation scheduling method and system

Abstract

A method and system for rotating dispatch of a large-scale electrolyzer cluster, at the initial moment of the rotation and at the end of each rotation, the alkaline electrolyzers are sorted in descending order according to the health status monitoring values ​​of the alkaline electrolyzers; all proton exchange membrane electrolyzers operate at rated power, and in the current rotation, the 1st, 2nd, ..., k The alkaline electrolyzer is operated at overload power. k +1, k +2, ..., n The alkaline electrolyzers are operated at rated power; the electrolyzer cluster is in the order of 1, 2, ..., k The alkaline electrolyzer is operated at rated power. k +1, k +2, ..., n The alkaline electrolyzers are shut down; the electrolyzer cluster is in the low-power condition without overload, and the 1st, 2nd, ..., k The alkaline electrolyzer operates at optimal power. k +1, k +2, ..., n The operation of alkaline electrolyzers was improved to improve the stability of the electrolyzer cluster.

Description

Technical Field

[0001] The present invention belongs to the technical field of renewable energy control, and in particular, relates to a method and system for rotating scheduling of large-scale electrolyzer clusters to support interactive regulation of power grids. Background Art

[0002] Renewable energy water electrolysis hydrogen production technology based on wind and solar power generation converts and stores fluctuating clean electricity into high-quality hydrogen energy. Water electrolysis hydrogen production equipment includes alkaline electrolyzers and proton exchange membrane electrolyzers. The control of the renewable energy coupled hydrogen production system is the energy management and regulation between each module and the electrolyzer. In the face of wind farms that can reach hundreds of megawatts, multiple electrolyzers must be combined to form an electrolyzer cluster to meet the consumption demand. Ignoring the coordinated control between the individual units within the electrolyzer cluster will lead to problems such as too many electrolyzer starts and stops or uneven continuous operation time in an unhealthy state, which directly affects the service life of the electrolyzer.

[0003] In the prior art, the electrolytic cell rotation scheduling method intelligently adjusts the working status of multiple electrolytic cells, achieves the balance of working time of each electrolytic cell, improves the operating efficiency and service life of the electrolytic cell, reduces operating costs, matches the operation of the electrolytic cell with the supply of renewable energy, reduces energy waste, improves the overall energy utilization efficiency, enables the electrolytic cell array to better adapt to the randomness and volatility of renewable energy, and enhances the stability and security of the power grid. However, in the large-scale electrolytic cell cluster rotation scheduling, although the alkaline electrolytic cell has certain advantages, it is poor in rapid startup and adaptability to variable loads, and cannot respond quickly to the volatility of renewable energy. When operating at low current density, the alkaline electrolytic cell will bring safety hazards due to the accumulation of gas impurities, limiting its dynamic response capability under low load conditions. Although the existing rotation method averages the working time of different electrolyzer units, it handles the characteristics of the electrolyzer in a rough manner, divides the working conditions simply, and does not adequately consider the constraints of the electrolyzer's adjustment characteristics, start-stop times, hydrogen production safety, etc. It fails to consider the complex electrochemical reaction dynamics inside the electrolyzer and the impact of external environmental changes on electrolysis efficiency, limiting the optimization of electrolyzer operation. During the actual rotation process, the real-time performance status of different electrolyzers varies, and the performance difference becomes more obvious as the operating time accumulates. The rule-based switching method lacks the ability to dynamically adapt to the real-time performance status of the electrolyzer, cannot accurately identify and respond to changes in electrolyzer performance, and cannot achieve balanced management of the electrolyzer's health status. In addition, it is unable to fully consider the complex dynamic behavior of the electrolyzer under different operating conditions, including changes in electrochemical performance, material aging, and the impact of the operating environment, limiting the overall performance and life optimization of the electrolyzer array. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a large-scale electrolyzer cluster rotation scheduling method and system to solve the problems of insufficient coordinated control of electrolyzer clusters, slow response speed and simple working condition division in renewable energy coupled hydrogen production systems, and improve the stability of the electrolyzer cluster system.

[0005] The present invention adopts the following technical solution.

[0006] The present invention proposes a large-scale electrolytic cell cluster rotation scheduling method, the electrolytic cell cluster includes The same alkaline electrolyzer and Identical proton exchange membrane electrolyzers, including:

[0007] Obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster; when the actual operating power of the electrolyzer cluster is less than the output power of the new energy unit, the electrolyzer cluster is determined to be overloaded; when the actual operating power of the electrolyzer cluster is greater than the output power of the new energy unit, the electrolyzer cluster is determined to be not overloaded; when the electrolyzer cluster is not overloaded and all proton exchange membrane electrolyzers are operating at rated power, if the actual operating power of each alkaline electrolyzer is less than the optimal power, the electrolyzer cluster is determined to be in a non-overloaded low-power condition; if the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the electrolyzer cluster is determined to be in a non-overloaded high-power condition;

[0008] At the beginning of the rotation and the end of each rotation, the alkaline electrolytic cells are sorted in descending order according to the health status monitoring values ​​of the alkaline electrolytic cells;

[0009] When the electrolyzer cluster is overloaded, all proton exchange membrane electrolyzers in the current rotation are controlled to operate at rated power, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at overload power and the first , ,……, An alkaline electrolyzer is operated at rated power;

[0010] When the electrolyzer cluster is in a non-overloaded high-power condition, in the current rotation, all proton exchange membrane electrolyzers are controlled to operate at rated power, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at rated power and the first , ,……, Alkaline electrolyzers were shut down;

[0011] When the electrolyzer cluster is in a low-power condition without overload, in the current rotation, all proton exchange membrane electrolyzers are controlled to operate at rated power, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at optimal power and the first , ,……, Alkaline electrolyzers were shut down.

[0012] Preferably, obtaining the output power of the new energy unit and the actual operating power of the electrolyzer cluster includes:

[0013] Get the output power of new energy units and power fluctuation value , get the rated power of the alkaline electrolyzer , Actual operating power , optimal power and overload power, and obtain the rated power of the proton exchange membrane electrolyzer , Actual operating power , optimum power and overload power;

[0014] The optimum power of alkaline electrolyzer and proton exchange membrane electrolyzer is 35% of the rated power, and the overload power is 120% of the rated power.

[0015] Preferably, the electrolytic cell cluster is determined to be overloaded when the following relationship is satisfied:

[0016] ,

[0017] The electrolyzer cluster is determined to be not overloaded when the following relationship is met:

[0018] ,

[0019] In the formula, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers.

[0020] Preferably, when the electrolyzer cluster is not overloaded, the total rated power of all proton exchange membrane electrolyzers is If the power fluctuation value is equal to that of the new energy unit, the actual operating power of each alkaline electrolyzer satisfies the following relationship:

[0021] ,

[0022] In the formula, is the power fluctuation value of the new energy unit;

[0023] If the actual operating power of each alkaline electrolytic cell is less than the optimal power, the following relationship is satisfied:

[0024] ,

[0025] It is determined that the electrolyzer cluster is in a non-overloaded low-power operating condition;

[0026] If the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the following relationship is satisfied:

[0027] ,

[0028] It is determined that the electrolyzer cluster is in a non-overloaded high-power condition.

[0029] Preferably, the health status monitoring value of the alkaline electrolytic cell satisfies the following relationship:

[0030] ,

[0031] In the formula, For the The electrolytic cell Health status monitoring value at all times, For the The electrolytic cell The actual voltage at the moment, For the The actual voltage of an electrolytic cell at the initial moment, in the embodiment, is taken as the rated voltage, is the attenuation proportional limiting coefficient of the electrolytic cell.

[0032] Preferably, the sequence numbers of the sorted alkaline electrolytic cells are 1, 2, ..., ,……, , where the health status monitoring value of the alkaline electrolyzer with serial number 1 is the largest, and the serial number is The health status monitoring value of the alkaline electrolyzer is minimal.

[0033] Preferably, at the initial moment of the electrolytic cell cluster rotation scheduling , according to the alkaline electrolytic cell at the initial moment The health status monitoring values ​​of the alkaline electrolyzers are sorted from large to small; in the first rotation, when the alkaline electrolyzers run for a long time Reach the set first shift duration At the end of the first shift, the alkaline electrolytic cell The alkaline electrolyzers are sorted in descending order of the health status monitoring values; and so on. During the next shift, when the alkaline electrolyzer runs for a long time Reach the set Length of shift When the alkaline electrolytic cell is End time of next shift The health status monitoring values ​​of the alkaline electrolyzers are sorted from large to small;

[0034] According to each rotation The average value of the health status monitoring values ​​of the alkaline electrolyzers is used to determine the set time threshold.

[0035] Preferably, The values ​​satisfy the following relationship:

[0036] ,

[0037] In the formula, is the output power of the new energy unit, is the power fluctuation value of the new energy unit, is the actual operating power of the alkaline electrolyzer, is the rounding symbol.

[0038] Preferably, under overload conditions, the following relationship is satisfied:

[0039] ,

[0040] In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, 1.2 is the overload power of the alkaline electrolyzer, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

[0041] Preferably, under non-overload high power conditions, the following relationship is satisfied:

[0042]

[0043] In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

[0044] Preferably, under non-overload and low-power conditions, the following relationship is satisfied:

[0045] ,

[0046] In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, 0.35 The optimum power for alkaline electrolyzers is is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

[0047] The present invention also proposes a large-scale electrolytic cell cluster rotation scheduling system, the electrolytic cell cluster includes The same alkaline electrolyzer and Identical proton exchange membrane electrolyzers, including:

[0048] The operating condition classification module is used to obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster; when the actual operating power of the electrolyzer cluster is less than the output power of the new energy unit, the electrolyzer cluster is judged to be overloaded; when the actual operating power of the electrolyzer cluster is greater than the output power of the new energy unit, the electrolyzer cluster is judged to be not overloaded; when the electrolyzer cluster is not overloaded and all proton exchange membrane electrolyzers are operating at rated power, if the actual operating power of each alkaline electrolyzer is less than the optimal power, the electrolyzer cluster is judged to be in a non-overloaded low-power operating condition; if the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the electrolyzer cluster is judged to be in a non-overloaded high-power operating condition;

[0049] The alkaline electrolytic cell sorting module is used to sort the alkaline electrolytic cells in descending order according to the health status monitoring values ​​of the alkaline electrolytic cells at the initial moment of the rotation and the end moment of each rotation;

[0050] The rotation scheduling module is used to control all proton exchange membrane electrolyzers to operate at rated power when the electrolyzer cluster is overloaded. The alkaline electrolyzer is operated at overload power and the first , ,……, When the electrolyzer cluster is in a high-power condition without overload, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at rated power and the first , ,……, When the electrolyzer cluster is in a low-power condition without overload, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at optimal power and the first , ,……, Alkaline electrolyzers were shut down.

[0051] The present invention is also a terminal, comprising a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps of the method.

[0052] The present invention is also a computer-readable storage medium having a computer program stored thereon, which implements the steps of the method when executed by a processor.

[0053] The beneficial effects of the present invention are that, compared with the prior art, at least the present invention includes that, by adopting an electrolyzer combination of a proton exchange membrane electrolyzer and an alkaline electrolyzer in a synergistic coupling, the entire hydrogen production system can maintain efficient and stable hydrogen production in the face of fluctuations in renewable energy sources such as wind power and photovoltaics, thereby enhancing the overall stability of the system. The present invention proposes an innovative rotation method that takes into account the health status of the electrolyzer, which effectively reduces the performance differences between electrolyzers and significantly improves the service life of the electrolyzer by monitoring the health status of the electrolyzer in real time and dynamically adjusting its working order in the cluster in combination with the rotation control method.

[0054] According to the operating characteristics of the alkaline electrolytic cell, the electrolytic cell cluster rotation control method proposed in the present invention realizes that the operating power of the electrolytic cell is maintained in the range from the minimum safe operating power to the rated power, reduces the number of shutdowns of a single electrolytic cell, and accurately controls the duration of each shutdown to ensure that the electrolytic cell can maintain a certain temperature after shutdown to increase the restart speed of the electrolytic cell, and also reduces the total configuration capacity of the electrolytic cell. At the same time, the overload time is accurately controlled to avoid long-term overload operation of a single electrolytic cell, thereby ensuring its operating safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the operating power value and power range of the electrolyzer;

[0056] Figure 2 It is a flow chart of the large-scale electrolytic cell cluster rotation scheduling method proposed in the present invention. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only embodiments of a part of the present invention, rather than all embodiments. Based on the spirit of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0058] The water electrolysis hydrogen production equipment includes alkaline electrolyzers and proton exchange membrane electrolyzers; the start-stop characteristics of proton exchange membrane electrolyzers: the start-up speed of proton exchange membrane electrolyzers is very fast, and they can reach full load operation from cold state within a few minutes. This fast start-up capability makes proton exchange membrane electrolyzers very suitable for combining with renewable energy sources such as wind and solar energy, because the output of these energy sources is intermittent and unstable. In addition, the start-up and shutdown process of proton exchange membrane electrolyzers has little effect on hydrogen production efficiency, and can maintain high efficiency even in the case of frequent start-up and shutdown. Start-stop characteristics of alkaline electrolyzers: During the startup process of alkaline electrolyzers, since the initial temperature is lower than the minimum hydrogen production temperature requirement, a large amount of power is required to heat the electrolyte to reach a suitable hydrogen production temperature, resulting in a long initial startup time for alkaline electrolyzers. As the temperature of the electrolyzer increases and meets the minimum hydrogen generation conditions, the required power is converted into insulation power to maintain the operation of the electrolyzer. In addition, the electrolyzer can quickly reduce the power to zero when it is shut down, and has the ability to serve as an interruptible load. This feature gives the electrolyzer a certain degree of flexibility in dealing with fluctuations in renewable energy, but it also exposes its challenges in rapid response and energy efficiency. Alkaline electrolyzer insulation characteristics: When the electrolyzer array stops operating, the environmental control system can maintain the temperature of the electrolyzer stable and prevent the temperature from dropping within a specific time period. This function ensures that the electrolyzer can quickly resume operation after a limited downtime period without consuming energy for preheating again, thereby improving the operating efficiency and response speed of the electrolyzer. Alkaline electrolyzer regulation characteristics: The electrolyzer can achieve rapid power regulation in a wide range of milliseconds from high temperature and high power points to low temperature and low power points, while it takes minutes to adjust from low temperature and low power points to high temperature and high power points. Alkaline electrolyzer overload characteristics: When the electrolyzer is working, its power can exceed the rated power for a short time, reaching 110%~130% of the rated power. This feature can be used to reduce the configuration capacity of the electrolyzer.

[0059] Hydrogen safe operating power: When the electrolyzer is operating at low power, due to the characteristics of the internal materials of the electrolyzer, the operating power of the electrolyzer cannot be lower than a certain limit, otherwise there is a risk of hydrogen and oxygen cross-linking exceeding the explosion limit, and the limit is generally 20%~25% of the rated power of the electrolyzer. At the same time, since the electrolyzer device is an electrical conversion device, its reaction has a certain buffer time, so in practice the electrolyzer can be operated below the hydrogen safety power limit for a short time, and the duration varies from a few minutes depending on the capacity of the electrolyzer.

[0060] According to the analysis of the electrolytic cell operation characteristics, the working status of the electrolytic cell is classified according to the fluctuating power of the electrolytic cell, such as Figure 1As shown, it includes: dangerous operating state, optimal operating state, safe operating state, and overload operating state; among them, the electrolyzer is in the optimal operating state when the fluctuating power of the electrolyzer reaches the optimal power range, and the lower limit of the optimal power range is the rated power 20% of the optimal power range, the upper limit is the rated power 35%; when the fluctuating power of the electrolytic cell reaches the rated power range, the electrolytic cell is in a safe operating state, and the lower limit of the rated power range is the rated power 35% of the rated power range, the upper limit of the rated power range is the rated power When the fluctuating power of the electrolytic cell reaches the overload power range, the electrolytic cell is in an overload operation state. The lower limit of the overload power range is the rated power. , the upper limit of the overload power range is the rated power 120%; when the fluctuating power of the electrolyzer is less than the rated power 20% or more than the rated power The electrolyzer is in a dangerous operating state.

[0061] The present invention proposes a large-scale electrolytic cell cluster rotation scheduling method, the electrolytic cell cluster includes The same alkaline electrolyzer and The same proton exchange membrane electrolyzer, such as Figure 2 As shown, including:

[0062] Step 1, obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster; when the actual operating power of the electrolyzer cluster is less than the output power of the new energy unit, the electrolyzer cluster is determined to be overloaded; when the actual operating power of the electrolyzer cluster is greater than the output power of the new energy unit, the electrolyzer cluster is determined to be not overloaded; when the electrolyzer cluster is not overloaded and all proton exchange membrane electrolyzers are operating at rated power, if the actual operating power of each alkaline electrolyzer is less than the optimal power, the electrolyzer cluster is determined to be in a non-overloaded low-power condition; if the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the electrolyzer cluster is determined to be in a non-overloaded high-power condition.

[0063] Specifically, step 1 includes:

[0064] Step 1.1, obtain the output power of the new energy unit and power fluctuation value , get the rated power of the alkaline electrolyzer , Actual operating power , optimal power and overload power, and obtain the rated power of the proton exchange membrane electrolyzer , Actual operating power , optimum power and overload power;

[0065] In the embodiment, the optimum power of the alkaline electrolyzer and the proton exchange membrane electrolyzer are both 35% of the rated power, and the overload power is both 120% of the rated power.

[0066] Step 1.2: The electrolyzer cluster is determined to be overloaded when the following relationship is satisfied:

[0067] ,

[0068] The electrolyzer cluster is determined to be not overloaded when the following relationship is met:

[0069] ,

[0070] When the electrolyzer cluster is not overloaded, according to the start-stop characteristics of the proton exchange membrane electrolyzer, the total rated power of all proton exchange membrane electrolyzers Power fluctuation value of new energy units If the actual operating power of each alkaline electrolyzer satisfies the following relationship:

[0071] ,

[0072] Step 1.3, the electrolytic cell cluster is not overloaded. If the actual operating power of each alkaline electrolytic cell is less than the optimal power, it is determined that the electrolytic cell cluster is in a non-overloaded low-power condition, satisfying the following relationship:

[0073] ,

[0074] Step 1.4: The electrolytic cell cluster is not overloaded. If the actual operating power of each alkaline electrolytic cell is greater than the optimal power but less than the rated power, the electrolytic cell cluster is determined to be in a non-overloaded high-power condition, satisfying the following relationship:

[0075] ,

[0076] Step 2: at the initial moment of the rotation and the end moment of each rotation, the alkaline electrolytic cells are sorted in descending order according to the health status monitoring values ​​of the alkaline electrolytic cells.

[0077] Among them, the health status monitoring value of the alkaline electrolytic cell satisfies the following relationship:

[0078] ,

[0079] In the formula, For the The electrolytic cell Health status monitoring value at all times, For the The electrolytic cell The actual voltage at the moment, For the The actual voltage of an electrolytic cell at the initial moment, in the embodiment, is taken as the rated voltage, is the attenuation ratio limiting coefficient of the electrolytic cell;

[0080] The sequence numbers of the alkaline electrolytic cells are 1, 2, ..., ,……, , where the health status monitoring value of the alkaline electrolyzer with serial number 1 is the largest, and the serial number is The health status monitoring value of the alkaline electrolyzer is the smallest;

[0081] At the initial moment of electrolyzer cluster rotation scheduling , according to the alkaline electrolytic cell at the initial time The health status monitoring values ​​of the alkaline electrolyzers are sorted from large to small; in the first rotation, when the alkaline electrolyzers run for a long time Reach the set first shift duration At the end of the first shift, the alkaline electrolyzer The alkaline electrolyzers are sorted in descending order of the health status monitoring values ​​of During the next shift, when the alkaline electrolyzer runs for a long time Reach the set Length of shift When the alkaline electrolytic cell is End time of next shift The health status monitoring values ​​of the alkaline electrolyzers are sorted from large to small.

[0082] In the above method, each electrolytic stack operates at startup, optimal, rated, overload or fluctuating power in different scenarios. Changes in operating conditions are more likely to cause performance degradation. In order to balance the operating status of the electrolytic stack, the health status of the electrolytic stack is monitored in real time during the rotation process. The electrolytic cells are renumbered according to their health status, and the performance is numbered from 1 to 1 from the best to the worst. After all the electrolytic cells have completed a round of rotation, they will continue to rotate according to new numbers, so that the electrolytic cells with poor performance can get more rest time, preventing the phenomenon of some electrolytic stacks being scrapped prematurely due to excessive differences between them.

[0083] According to each rotation The set duration threshold is determined by the average value of the health status monitoring values ​​of the alkaline electrolytic cells, so the set duration threshold in each rotation is different, so that the utilization rate of the alkaline electrolytic cell can be improved under the set rotation duration, while taking into account the overall health status of the alkaline electrolytic cell.

[0084] Step 3: When the electrolyzer cluster is overloaded, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., k The alkaline electrolyzer is operated at overload power and the first k +1, k +2, ..., n An alkaline electrolyzer is operated at rated power;

[0085] When the electrolyzer cluster is in a non-overloaded high-power condition, in the current rotation, all proton exchange membrane electrolyzers are controlled to operate at rated power, and the 1st, 2nd, ..., k The alkaline electrolyzer is operated at rated power and the first k +1, k +2, ..., n Alkaline electrolyzers were shut down;

[0086] When the electrolyzer cluster is in a low-power condition without overload, in the current rotation, all proton exchange membrane electrolyzers are controlled to operate at rated power, and the 1st, 2nd, ..., k The alkaline electrolyzer is operated at optimal power and the first k +1, k +2, ..., n Alkaline electrolyzers were shut down.

[0087] in, The values ​​satisfy the following relationship:

[0088] ,

[0089] In the formula, is the rounding symbol.

[0090] In the embodiment, under overload conditions, when all electrolytic cells are operating at rated power, the requirements are still not met. Then, by utilizing the overload characteristics of the alkaline electrolytic cell, some electrolytic cells are operated at rated power and some electrolytic cells are operated at overload power to meet the output power of the new energy unit. At this time, all proton exchange membrane electrolyzers are rated at Operate to meet the power fluctuation value of the new energy unit , and control the 1st, 2nd, ..., Alkaline electrolyzer according to the overload power 1.2 Run, sort at the same time , ,……, The alkaline electrolyzer operates at rated power to meet the output power of the new energy unit. and power fluctuation value The difference between ; satisfies the following relationship:

[0091] ,

[0092] In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, 1.2 is the overload power of the alkaline electrolyzer, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

[0093] In the embodiment, under the condition of high power without overload, a part of the electrolyzers can meet the output power of the new energy unit by operating at rated power. At this time, all proton exchange membrane electrolyzers are rated at Operate to meet the power fluctuation value of the new energy unit , and control the 1st, 2nd, ..., Alkaline electrolyzers according to rated power Operate to meet the output power of new energy units and power fluctuation value The difference between , ,……, The alkaline electrolyzer is shut down; the following relationship is satisfied:

[0094] ,

[0095] In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

[0096] In the embodiment, under the condition of low power without overload, a part of the electrolyzers can meet the output power of the new energy unit by operating at rated power. At this time, all proton exchange membrane electrolyzers are rated at Operate to meet the power fluctuation value of the new energy unit , and control the 1st, 2nd, ..., The alkaline electrolyzer is operated at an optimum power of 0.35 Operate to meet the output power of new energy units and power fluctuation value The difference between , ,……, The alkaline electrolyzer is shut down; the following relationship is satisfied:

[0097] ,

[0098] In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, 0.35 The optimum power for alkaline electrolyzers is is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

[0099] In the current rotation, when the operating time of the alkaline electrolytic cell reaches the set rotation time, return to step 2.

[0100] The present invention also proposes a large-scale electrolytic cell cluster rotation scheduling system, the electrolytic cell cluster includes The same alkaline electrolyzer and Identical proton exchange membrane electrolyzers, including:

[0101] The operating condition classification module is used to obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster; when the actual operating power of the electrolyzer cluster is less than the output power of the new energy unit, the electrolyzer cluster is judged to be overloaded; when the actual operating power of the electrolyzer cluster is greater than the output power of the new energy unit, the electrolyzer cluster is judged to be not overloaded; when the electrolyzer cluster is not overloaded and all proton exchange membrane electrolyzers are operating at rated power, if the actual operating power of each alkaline electrolyzer is less than the optimal power, the electrolyzer cluster is judged to be in a non-overloaded low-power operating condition; if the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the electrolyzer cluster is judged to be in a non-overloaded high-power operating condition;

[0102] The alkaline electrolytic cell sorting module is used to sort the alkaline electrolytic cells in descending order according to the health status monitoring values ​​of the alkaline electrolytic cells at the initial moment of the rotation and the end moment of each rotation;

[0103] The rotation scheduling module is used to control all proton exchange membrane electrolyzers to operate at rated power when the electrolyzer cluster is overloaded. The alkaline electrolyzer is operated at overload power and the first , ,……, When the electrolyzer cluster is in a high-power condition without overload, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at rated power and the first , ,……, When the electrolyzer cluster is in a low-power condition without overload, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at optimal power and the first , ,……, Alkaline electrolyzers were shut down.

[0104] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0105] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (a non-exhaustive list) of computer-readable storage media include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the above. The computer-readable storage medium used herein is not to be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0106] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0107] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect through the Internet). In some embodiments, by using the state information of the computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit may execute the computer-readable program instructions, thereby implementing various aspects of the present disclosure.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for rotating scheduling of a large-scale electrolytic cell cluster, wherein the electrolytic cell cluster includes: The same alkaline electrolyzer and identical proton exchange membrane electrolyzers, characterized in that include: Obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster; When the actual operating power of the electrolyzer cluster is less than the output power of the new energy unit, the electrolyzer cluster is judged to be overloaded; When the actual operating power of the electrolyzer cluster is greater than the output power of the new energy unit, the electrolyzer cluster is determined to be not overloaded; when the electrolyzer cluster is not overloaded and all proton exchange membrane electrolyzers are operating at rated power, if the actual operating power of each alkaline electrolyzer is less than the optimal power, the electrolyzer cluster is determined to be in a non-overloaded low-power condition; if the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the electrolyzer cluster is determined to be in a non-overloaded high-power condition; At the beginning of the rotation and the end of each rotation, the alkaline electrolytic cells are sorted in descending order according to the health status monitoring values ​​of the alkaline electrolytic cells; When the electrolyzer cluster is overloaded, all proton exchange membrane electrolyzers in the current rotation are controlled to operate at rated power, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at overload power and the first , ,……, An alkaline electrolyzer is operated at rated power; When the electrolyzer cluster is in a non-overloaded high-power condition, in the current rotation, all proton exchange membrane electrolyzers are controlled to operate at rated power, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at rated power and the first , ,……, Alkaline electrolyzers were shut down; When the electrolyzer cluster is in a low-power condition without overload, in the current rotation, all proton exchange membrane electrolyzers are controlled to operate at rated power, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at optimal power and the first , ,……, Alkaline electrolyzers were shut down.

2. The large-scale electrolytic cell cluster rotation scheduling method according to claim 1 is characterized in that: Obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster, including: Get the output power of new energy units and power fluctuation value , get the rated power of the alkaline electrolyzer , Actual operating power , optimal power and overload power, and obtain the rated power of the proton exchange membrane electrolyzer , Actual operating power , optimum power and overload power; The optimum power of alkaline electrolyzer and proton exchange membrane electrolyzer is 35% of the rated power, and the overload power is 120% of the rated power.

3. The large-scale electrolytic cell cluster rotation scheduling method according to claim 2 is characterized in that: The electrolyzer cluster is considered overloaded when the following relationship is met: The electrolyzer cluster is determined to be not overloaded when the following relationship is met: In the formula, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers.

4. The large-scale electrolytic cell cluster rotation scheduling method according to claim 3 is characterized in that: When the electrolyzer cluster is not overloaded, the total rated power of all proton exchange membrane electrolyzers If the power fluctuation value is equal to that of the new energy unit, the actual operating power of each alkaline electrolyzer satisfies the following relationship: In the formula, is the power fluctuation value of the new energy unit; If the actual operating power of each alkaline electrolytic cell is less than the optimal power, the following relationship is satisfied: It is determined that the electrolyzer cluster is in a non-overloaded low-power operating condition; If the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the following relationship is satisfied: It is determined that the electrolyzer cluster is in a non-overloaded high-power condition.

5. The large-scale electrolytic cell cluster rotation scheduling method according to claim 1 is characterized in that: The health status monitoring value of the alkaline electrolyzer satisfies the following relationship: In the formula, For the The electrolytic cell Health status monitoring value at all times, For the The electrolytic cell The actual voltage at the moment, For the The actual voltage of the electrolytic cell at the initial moment, is the attenuation proportional limiting coefficient of the electrolytic cell.

6. The large-scale electrolytic cell cluster rotation scheduling method according to claim 5 is characterized in that: The sequence numbers of the alkaline electrolytic cells are 1, 2, ..., ,……, , where the health status monitoring value of the alkaline electrolyzer with serial number 1 is the largest, and the serial number is The health status monitoring value of the alkaline electrolyzer is minimal.

7. The large-scale electrolytic cell cluster rotation scheduling method according to claim 1 is characterized in that: At the initial moment of electrolyzer cluster rotation scheduling , according to the alkaline electrolytic cell at the initial moment The health status monitoring values ​​of the alkaline electrolyzers are sorted from large to small; In the first shift, when the alkaline electrolyzer runs for a long time Reach the set first shift duration At the end of the first shift, the alkaline electrolytic cell The alkaline electrolyzers are sorted in descending order of the health status monitoring values ​​of During the next shift, when the alkaline electrolyzer runs for a long time Reach the set Length of shift When the alkaline electrolytic cell is End time of next shift The health status monitoring values ​​of the alkaline electrolyzers are sorted from large to small; According to each rotation The average value of the health status monitoring values ​​of the alkaline electrolyzers is used to determine the set time threshold.

8. The large-scale electrolytic cell cluster rotation scheduling method according to claim 1 is characterized in that: The values ​​satisfy the following relationship: In the formula, is the output power of the new energy unit, is the power fluctuation value of the new energy unit, is the actual operating power of the alkaline electrolyzer, is the rounding symbol.

9. The large-scale electrolytic cell cluster rotation scheduling method according to claim 8 is characterized in that: Under overload conditions, the following relationship is satisfied: In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, 1.2 is the overload power of the alkaline electrolyzer, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

10. The large-scale electrolytic cell cluster rotation scheduling method according to claim 8, characterized in that: Under non-overload high power conditions, the following relationship is satisfied: In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

11. The large-scale electrolytic cell cluster rotation scheduling method according to claim 8, characterized in that: Under the non-overload and low-power conditions, the following relationship is satisfied: In the formula, is the output power of the new energy unit, is the rated power of the alkaline electrolyzer, is the rated power of the proton exchange membrane electrolyzer, 0.35 The optimum power for alkaline electrolyzers is is the number of alkaline electrolytic cells, is the number of proton exchange membrane electrolyzers, is the number of alkaline electrolyzers operating at rated power, is the power fluctuation value of the new energy unit, , ,……, For the 1st, 2nd, ..., The actual operating power of an alkaline electrolyzer, , ,……, For the , ,……, The actual operating power of an alkaline electrolyzer, , ,……, For the 1st, 2nd, ..., The actual operating power of a proton exchange membrane electrolyzer.

12. A large-scale electrolytic cell cluster rotation scheduling system, the electrolytic cell cluster includes The same alkaline electrolyzer and identical proton exchange membrane electrolyzers, characterized in that include: The operating condition classification module is used to obtain the output power of the new energy unit and the actual operating power of the electrolyzer cluster; When the actual operating power of the electrolyzer cluster is less than the output power of the new energy unit, the electrolyzer cluster is determined to be overloaded; when the actual operating power of the electrolyzer cluster is greater than the output power of the new energy unit, the electrolyzer cluster is determined to be not overloaded; when the electrolyzer cluster is not overloaded and all proton exchange membrane electrolyzers are operating at rated power, if the actual operating power of each alkaline electrolyzer is less than the optimal power, the electrolyzer cluster is determined to be in a non-overloaded low-power condition; if the actual operating power of each alkaline electrolyzer is greater than the optimal power but less than the rated power, the electrolyzer cluster is determined to be in a non-overloaded high-power condition; The alkaline electrolytic cell sorting module is used to sort the alkaline electrolytic cells in descending order according to the health status monitoring values ​​of the alkaline electrolytic cells at the initial moment of the rotation and the end moment of each rotation; The rotation scheduling module is used to control all proton exchange membrane electrolyzers to operate at rated power when the electrolyzer cluster is overloaded. The alkaline electrolyzer is operated at overload power and the first , ,……, When the electrolyzer cluster is in a high-power condition without overload, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at rated power and the first , ,……, When the electrolyzer cluster is in a low-power condition without overload, all proton exchange membrane electrolyzers are controlled to operate at rated power in the current rotation, and the 1st, 2nd, ..., The alkaline electrolyzer is operated at optimal power and the first , ,……, Alkaline electrolyzers were shut down.

13. A terminal comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is configured to operate according to the instructions to execute the steps of the method according to any one of claims 1 to 11.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 11 are implemented.

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