A control method and apparatus for a hydrogen production electrolyzer cluster

Abstract

This invention relates to the field of hydrogen production electrolyzer cluster control technology, and discloses a control method and apparatus for a hydrogen production electrolyzer cluster. The method includes: acquiring the real-time output power of wind power within a preset time window, and determining a reference power for wind power grid connection based on the real-time output power within the preset time window; acquiring the measured power of wind power, and determining the input power of the hydrogen production electrolyzer cluster based on the reference power for wind power grid connection and the measured power of wind power; acquiring the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determining a single-cell equalization control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer; and allocating wind power hydrogen production power to the hydrogen production electrolyzer cluster using the single-cell equalization control strategy. This invention improves the utilization rate of wind power output, balances the working time of each electrolyzer in the hydrogen production electrolyzer cluster, averages the wear of the electrolyzers, and extends the service life of the hydrogen production electrolyzer cluster.

Description

Technical Field

[0001] This invention relates to the field of hydrogen electrolyzer cluster control technology, specifically to a control method and apparatus for a hydrogen electrolyzer cluster. Background Technology

[0002] Hydrogen, as a zero-carbon clean energy source, can reduce carbon emissions and enable the large-scale integration of renewable energy. However, producing hydrogen from fossil fuels generates significant amounts of greenhouse gases. Electrolyzers offer the possibility of producing green hydrogen using electricity generated from renewable energy sources, nuclear power, and other sources. Among renewable energy sources, wind power plays a crucial role in achieving future carbon neutrality goals; therefore, producing hydrogen from wind power is one of the future technological trends.

[0003] In current wind power hydrogen production processes, the control of electrolyzer clusters is mostly considered from the perspective of the entire electrolyzer cluster, aiming to balance the power of the cluster with the input power. However, less consideration is given to the balancing strategy between individual electrolyzers, which often leads to overuse of individual electrolyzers and significantly shortens the lifespan of some electrolyzers. Summary of the Invention

[0004] In view of this, the present invention provides a control method and apparatus for a hydrogen production electrolyzer cluster, in order to solve the problem that the control of the electrolyzer cluster does not take into account the balancing strategy between individual electrolyzers, resulting in overuse of individual electrolyzers and a significant reduction in the lifespan of some electrolyzers.

[0005] In a first aspect, the present invention provides a control method for a cluster of hydrogen electrolyzers, the method comprising:

[0006] Obtain the real-time output power of wind power within a preset time window, and determine the grid-connected reference power of wind power based on the real-time output power of wind power within the preset time window;

[0007] Obtain the measured wind power, and determine the input power of the hydrogen electrolyzer cluster based on the grid-connected wind power reference power and the measured wind power.

[0008] The status of each electrolyzer in the hydrogen production electrolyzer cluster is obtained, and the balance control strategy of each individual electrolyzer is determined based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer.

[0009] A single-cell balanced control strategy is used to allocate wind power to hydrogen production in a hydrogen electrolyzer cluster.

[0010] This embodiment provides a control method for a hydrogen production electrolyzer cluster. It determines the wind power grid-connected reference power by measuring the real-time output power of wind power within a preset time window. Based on the wind power grid-connected reference power and the measured wind power, it determines the input power of the hydrogen production electrolyzer cluster. Based on the input power of the cluster and the status of each electrolyzer, it determines a single-cell equalization control strategy. By utilizing the hydrogen production electrolyzer cluster to absorb the fluctuating components of wind power, it smooths out wind power fluctuations, improves the utilization rate of wind power output, and reduces power curtailment. Furthermore, by allocating wind power to the hydrogen production electrolyzer cluster through the single-cell equalization control strategy, it balances the working time of each electrolyzer in the cluster, averages the wear and tear of the electrolyzers, and extends the service life of the hydrogen production electrolyzer cluster.

[0011] In one optional implementation, determining the wind power grid-connected reference power based on the real-time output power of wind power within a preset time window includes:

[0012] The moving average of wind power is calculated based on the real-time output power of wind power within a preset time window;

[0013] The moving standard deviation of wind power is calculated based on the real-time output power of wind power and the moving average of wind power.

[0014] The reference power for wind power grid connection is calculated based on the moving average and moving standard deviation of wind power.

[0015] This embodiment provides a control method for a hydrogen production electrolyzer cluster. By calculating the moving average and moving standard deviation of wind power, and then calculating the wind power grid-connected reference power based on the moving average and moving standard deviation of wind power, the method achieves accurate calculation of the wind power grid-connected reference power. This provides a data foundation for the subsequent calculation of the input power of the hydrogen production electrolyzer cluster and improves the utilization rate of wind power output power.

[0016] In one optional implementation, the input power of the hydrogen production electrolyzer cluster is determined based on the wind power grid-connected reference power and the measured wind power; wherein, the calculation formula for the input power of the hydrogen production electrolyzer cluster is as follows:

[0017]

[0018] Among them, P e P(t) represents the input power of the hydrogen electrolyzer cluster, and P(t) represents the measured wind power. ref (t) represents the reference power for wind power grid connection.

[0019] In one optional implementation, a single-cell equalization control strategy is determined based on the input power of the hydrogen electrolyzer cluster and the state of each electrolyzer, including:

[0020] Each electrolyzer in the hydrogen production electrolyzer cluster is numbered, and a matrix is ​​constructed based on the status and number of each electrolyzer.

[0021] Obtain the rated power of a single electrolyzer, and determine the number of electrolyzers to be started based on the input power of the hydrogen production electrolyzer cluster and the rated power of a single electrolyzer.

[0022] The number of electrolytic cells that have been started is obtained, the number of electrolytic cells to be started is compared with the number of electrolytic cells that have been started, and the single-cell equalization control strategy is determined based on the comparison results.

[0023] This embodiment provides a control method for a hydrogen production electrolyzer cluster. Based on the input power of the hydrogen production electrolyzer cluster and the rated power of a single electrolyzer, the number of electrolyzers to be started is determined. Then, the comparison result between the number of electrolyzers to be started and the number of electrolyzers already started is used to determine the single electrolyzer balancing control strategy, thereby balancing the utilization time of each electrolyzer in the hydrogen production electrolyzer cluster and improving the service life of the hydrogen production electrolyzer cluster.

[0024] In one optional implementation, the number of electrolytic cells to be started is compared with the number of electrolytic cells already started, and a single-cell equalization control strategy is determined based on the comparison result, including:

[0025] If the number of electrolytic cells to be started is greater than the number of electrolytic cells already started, the number of operating hours of the shut-down electrolytic cells is determined based on the matrix.

[0026] Select the electrolytic cell with the fewest operating hours that was shut down to start up, and update the matrix and the number of electrolytic cells that have been started.

[0027] The updated number of started electrolytic cells is compared with the number of electrolytic cells to be started. Based on the comparison result, the start-up of the stopped electrolytic cells is controlled by the number of operating hours of the stopped electrolytic cells until the number of started electrolytic cells equals the number of electrolytic cells to be started, at which point the control of starting the stopped electrolytic cells is stopped.

[0028] This embodiment provides a control method for a hydrogen production electrolyzer cluster. Since the goal of the individual electrolyzer balancing control strategy is to ensure a relatively balanced lifespan among the individual electrolyzers, that is, to distribute the workload evenly and avoid individual electrolyzers from working for a long time, thereby reducing the performance degradation of individual equipment and extending the service life of the overall system, the start-up and shutdown sequence of the individual electrolyzers in the hydrogen production electrolyzer cluster is controlled based on the operating hours of the individual electrolyzers. This balances the working time of each electrolyzer in the hydrogen production electrolyzer cluster, averages the wear of the electrolyzers, and improves the service life of the electrolyzer cluster.

[0029] In one optional implementation, the number of electrolytic cells to be started is compared with the number of electrolytic cells already started, and a single-cell equalization control strategy is determined based on the comparison result, further comprising:

[0030] If the number of electrolytic cells to be started is greater than the number of electrolytic cells already started, the number of operating hours of the electrolytic cells is determined based on the matrix.

[0031] Select the electrolytic cell with the highest number of operating hours to perform a shutdown operation, and update the matrix and the number of electrolytic cells that have been started;

[0032] The updated number of started electrolytic cells is compared with the number of electrolytic cells to be started. Based on the comparison result, the number of running hours of the running electrolytic cells is used to control the shutdown of the electrolytic cells until the number of started electrolytic cells equals the number of electrolytic cells to be started, at which point the control of shutting down the running electrolytic cells is stopped.

[0033] In a second aspect, the present invention provides a control device for a cluster of hydrogen electrolyzers, the device comprising:

[0034] The first determining module is used to obtain the real-time output power of wind power within a preset time window and determine the grid-connected reference power of wind power based on the real-time output power of wind power within the preset time window.

[0035] The second determining module is used to obtain the measured wind power and determine the input power of the hydrogen electrolyzer cluster based on the wind power grid connection reference power and the measured wind power.

[0036] The third determining module is used to obtain the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the single electrolyzer equalization control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer.

[0037] The allocation module is used to allocate wind power hydrogen production capacity to the hydrogen production electrolyzer cluster using a single-cell equalization control strategy.

[0038] Thirdly, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the control method of the hydrogen electrolyzer cluster described in the first aspect or any corresponding embodiment thereof.

[0039] Fourthly, the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the control method for a hydrogen electrolyzer cluster according to the first aspect or any corresponding embodiment thereof.

[0040] Fifthly, the present invention provides a computer program product, including computer instructions for causing a computer to execute the control method for a hydrogen electrolyzer cluster according to the first aspect or any corresponding embodiment thereof. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic flowchart of a control method for a hydrogen production electrolyzer cluster according to an embodiment of the present invention;

[0043] Figure 2 This is a schematic flowchart of another control method for a hydrogen production electrolyzer cluster according to an embodiment of the present invention;

[0044] Figure 3 This is a schematic flowchart of another control method for a hydrogen production electrolyzer cluster according to an embodiment of the present invention;

[0045] Figure 4 This is a schematic flowchart of a hydrogen electrolyzer cluster control method for mitigating wind power fluctuations according to an embodiment of the present invention.

[0046] Figure 5 This is a schematic diagram of the wind power grid connection reference power curve according to an embodiment of the present invention;

[0047] Figure 6 This is a schematic diagram of the input power curve of a hydrogen electrolyzer cluster according to an embodiment of the present invention;

[0048] Figure 7 This is a structural block diagram of a control device for a hydrogen electrolyzer cluster according to an embodiment of the present invention;

[0049] Figure 8 This is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Wind power-to-hydrogen production is divided into two types: off-grid hydrogen production and grid-connected hydrogen production. Off-grid hydrogen production requires the absorption of all the output power of wind power generation, which requires a large capacity of the hydrogen production system. Therefore, the fixed asset investment cost of the hydrogen production system is high and its economic efficiency is low. Grid-connected hydrogen production only needs to absorb the fluctuation component of wind power, so the capacity configuration of the hydrogen production system is correspondingly lower, the investment cost of the entire system is lower, and the utilization rate of wind power output is improved.

[0052] The following problems are currently faced in the operation of electrolyzer clusters: the operation of electrolyzer clusters lacks a balancing strategy. In actual electrolytic hydrogen production projects, the control of electrolyzer clusters is mostly considered from the perspective of the whole, so that the power of the electrolyzer cluster is balanced with the input power. However, the balancing strategy between individual electrolyzers is rarely considered, which often leads to the overuse of individual electrolyzers and causes the lifespan of some electrolyzers to be greatly shortened.

[0053] According to an embodiment of the present invention, a control method for a hydrogen production electrolyzer cluster is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0054] This embodiment provides a control method for a hydrogen electrolyzer cluster, which can be used in server-type devices. Figure 1 This is a flowchart of a control method for a hydrogen electrolyzer cluster according to an embodiment of the present invention, such as... Figure 1 As shown, the process includes the following steps:

[0055] Step S101: Obtain the real-time output power of wind power within a preset time window, and determine the reference power for wind power grid connection based on the real-time output power of wind power within the preset time window.

[0056] Step S102: Obtain the measured wind power and determine the input power of the hydrogen electrolyzer cluster based on the wind power grid connection reference power and the measured wind power.

[0057] Specifically, the formula for calculating the input power of the hydrogen production electrolyzer cluster is as follows:

[0058]

[0059] Among them, P e P(t) represents the input power of the hydrogen electrolyzer cluster, and P(t) represents the measured wind power. ref (t) represents the reference power for wind power grid connection.

[0060] Step S103: Obtain the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the single-cell equalization control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer.

[0061] Specifically, the goal of the single-cell electrolytic cell equalization control strategy is to ensure that the lifespan of each electrolytic cell is relatively balanced, that is, to distribute the workload evenly, avoid individual electrolytic cells from working for a long time, thereby reducing the performance degradation of individual equipment and extending the service life of the overall system.

[0062] Step S104: Allocate wind power hydrogen production capacity to the hydrogen production electrolyzer cluster using a single-cell electrolyzer equalization control strategy.

[0063] This embodiment provides a control method for a hydrogen production electrolyzer cluster. It determines the wind power grid-connected reference power by measuring the real-time output power of wind power within a preset time window. Based on the wind power grid-connected reference power and the measured wind power, it determines the input power of the hydrogen production electrolyzer cluster. Based on the input power of the cluster and the status of each electrolyzer, it determines a single-cell equalization control strategy. By utilizing the hydrogen production electrolyzer cluster to absorb the fluctuating components of wind power, it smooths out wind power fluctuations, improves the utilization rate of wind power output, and reduces power curtailment. Furthermore, by allocating wind power to the hydrogen production electrolyzer cluster through the single-cell equalization control strategy, it balances the working time of each electrolyzer in the cluster, averages the wear and tear of the electrolyzers, and extends the service life of the hydrogen production electrolyzer cluster.

[0064] This embodiment provides a control method for a hydrogen electrolyzer cluster, which can be used in the aforementioned server-type devices. Figure 2 This is a flowchart of a control method for a hydrogen electrolyzer cluster according to an embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0065] Step S201: Obtain the real-time output power of wind power within a preset time window, and determine the reference power for wind power grid connection based on the real-time output power of wind power within the preset time window.

[0066] Specifically, step S201 includes:

[0067] Step S2011: Calculate the moving average value of wind power based on the real-time output power of wind power within a preset time window.

[0068] Specifically, a moving average algorithm is used to separate wind power at the minute level. The moving average can eliminate sudden fluctuations in wind power caused by abrupt increases or decreases in wind speed. Therefore, the average value of the real-time wind power output within a selected window length N is calculated, and the result is used as the smoothed power value at time t; where the moving average value P of the wind power at time t is... mThe formula for calculating (t) is shown below:

[0069]

[0070] Where P(i) represents the real-time output power of wind power at time k.

[0071] Step S2012: Calculate the moving standard deviation of wind power based on the real-time output power of wind power and the moving average of wind power.

[0072] Specifically, the moving standard deviation S of wind power at time t m The formula for calculating (t) is shown below:

[0073]

[0074] Step S2013: Calculate the grid-connected reference power of wind power based on the moving average value and the moving standard deviation of wind power.

[0075] Specifically, the grid-connected reference power P for wind power ref The formula for calculating (t) is shown below:

[0076] P ref (t)=P m (t)-S m (t) (4)

[0077] Step S202: Obtain the measured wind power output, and determine the input power of the hydrogen electrolyzer cluster based on the wind power grid-connected reference power and the measured wind power output. For details, please refer to [link to relevant documentation]. Figure 1 Step S102 of the illustrated embodiment will not be described again here.

[0078] Step S203: Obtain the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the individual electrolyzer equalization control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer. For details, please refer to [link to relevant documentation]. Figure 1 Step S103 of the illustrated embodiment will not be described again here.

[0079] Step S204: The wind power hydrogen production capacity is allocated to the hydrogen electrolyzer cluster using a single-cell equalization control strategy. For details, please refer to [link to relevant documentation]. Figure 1 Step S104 of the illustrated embodiment will not be described again here.

[0080] This embodiment provides a control method for a hydrogen production electrolyzer cluster. By calculating the moving average and moving standard deviation of wind power, and then calculating the wind power grid-connected reference power based on the moving average and moving standard deviation of wind power, the method achieves accurate calculation of the wind power grid-connected reference power. This provides a data foundation for the subsequent calculation of the input power of the hydrogen production electrolyzer cluster and improves the utilization rate of wind power output power.

[0081] This embodiment provides a control method for a hydrogen electrolyzer cluster, which can be used in the aforementioned server-type devices. Figure 3 This is a flowchart of a control method for a hydrogen electrolyzer cluster according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes the following steps:

[0082] Step S301: Obtain the real-time wind power output within a preset time window, and determine the wind power grid connection reference power based on the real-time wind power output within the preset time window. For details, please refer to [link to relevant documentation]. Figure 2 Step S201 of the illustrated embodiment will not be described again here.

[0083] Step S302: Obtain the measured wind power output, and determine the input power of the hydrogen electrolyzer cluster based on the wind power grid-connected reference power and the measured wind power output. For details, please refer to [link to relevant documentation]. Figure 2 Step S202 of the illustrated embodiment will not be described again here.

[0084] Step S303: Obtain the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the single-cell equalization control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer.

[0085] Specifically, step S303 includes:

[0086] Step S3031: Number each electrolyzer in the hydrogen production electrolyzer cluster and construct a matrix based on the status and number of each electrolyzer.

[0087] Specifically, each electrolyzer in the hydrogen production electrolyzer cluster is numbered, and matrix A is used to represent the state of each electrolyzer in the cluster. The matrix can be represented as follows:

[0088]

[0089] Where, element a in matrix A ij The row subscript i represents the cell number, and the element a in the matrix... ij The column index j indicates the state of the i-th electrolytic cell, and there are two state parameters, meaning the value of j ranges from 1 to 2; a i1 This represents the start-up time of the i-th electrolytic cell, and when the electrolytic cell stops, a... i1 Set to 0; a i2 This represents the number of hours the i-th electrolytic cell has been running. The more hours it has been running, the greater the performance degradation of the current electrolytic cell.

[0090] Step S3032: Obtain the rated power of a single electrolyzer, and determine the number of electrolyzers to be started based on the input power of the hydrogen production electrolyzer cluster and the rated power of a single electrolyzer.

[0091] Specifically, the formula for calculating the number of electrolytic cells to be started, TEN, is as follows:

[0092]

[0093] Among them, P e The input power of the hydrogen electrolyzer cluster is represented by P, where P represents the rated power of a single electrolyzer, and [] represents the rounding operation.

[0094] Step S3033: Obtain the number of electrolytic cells that have been started, compare the number of electrolytic cells to be started with the number of electrolytic cells that have been started, and determine the single electrolytic cell equalization control strategy based on the comparison result.

[0095] Specifically, if the number of electrolyzers to be started is greater than the number of electrolyzers already started, it means that electrolyzers need to be started to increase hydrogen production power. If the number of electrolyzers to be started is less than the number of electrolyzers already started, it means that some electrolyzers need to be shut down to reduce hydrogen production power.

[0096] In some optional implementations, step S3033 above includes:

[0097] Step a1: If the number of electrolytic cells to be started is greater than the number of electrolytic cells already started, then the number of operating hours of the shut-down electrolytic cells is determined based on the matrix.

[0098] Specifically, the electrolytic cell numbers representing the currently shut-down cells are found in the first column of matrix A and then set together.

[0099] Step a2: Select the electrolytic cell with the fewest running hours to start up, and update the matrix and the number of electrolytic cells that have been started.

[0100] Specifically, select the electrolytic cell with the smallest number of operating hours in the set that is shut down. Assuming that the i-th electrolytic cell is the electrolytic cell with the smallest number of operating hours that is shut down, start the i-th electrolytic cell.

[0101] Furthermore, by updating the corresponding elements in matrix A, the updated element a i1 The value is the boot time of this system.

[0102] Furthermore, the updated number of activated electrolytic cells, AEN, is represented as follows:

[0103] AEN = AEN + 1 (7)

[0104] Step a3: Compare the updated number of started electrolytic cells with the number of electrolytic cells to be started. Based on the comparison result, control the start of the stopped electrolytic cells using the number of operating hours of the stopped electrolytic cells until the number of started electrolytic cells equals the number of electrolytic cells to be started, then stop controlling the start of the stopped electrolytic cells.

[0105] Specifically, if the updated number of activated electrolytic cells is still greater than the number of electrolytic cells to be activated, repeat steps a1 to a2 above until AEN and TEN are equal.

[0106] In some optional implementations, step S3033 above further includes:

[0107] Step b1: If the number of electrolytic cells to be started is greater than the number of electrolytic cells already started, then the number of operating hours of the electrolytic cells is determined based on the matrix.

[0108] Specifically, the number of the currently operating electrolytic cell is found in the first column of matrix A and a set is formed.

[0109] Step b2: Select the electrolytic cell with the highest number of operating hours and shut it down, then update the matrix and the number of electrolytic cells that have been started.

[0110] Specifically, find the electrolytic cell with the highest number of operating hours among all operating electrolytic cells in the set. If the i-th electrolytic cell is the one with the highest number of operating hours, then the i-th electrolytic cell will be shut down.

[0111] Furthermore, update the elements in the matrix; the updated matrix element a i′2 It can be represented as:

[0112] a i′2 =a i′2 +current time-a i′1 (8)

[0113] a i1 =0(9)

[0114] Furthermore, the updated number of activated electrolytic cells, AEN, can be expressed as:

[0115] AEN = AEN-1 (10)

[0116] Step b3: Compare the updated number of started electrolytic cells with the number of electrolytic cells to be started. Based on the comparison result, control the shutdown of the electrolytic cells by using the operating hours of the running electrolytic cells until the number of started electrolytic cells equals the number of electrolytic cells to be started, then stop controlling the shutdown of the running electrolytic cells.

[0117] Specifically, if the updated number of activated electrolytic cells is still less than the number of electrolytic cells to be activated, repeat steps b1 to b2 until AEN and TEN are equal.

[0118] This embodiment provides a control method for a hydrogen production electrolyzer cluster. Since the goal of the individual electrolyzer balancing control strategy is to ensure a relatively balanced lifespan among the individual electrolyzers, that is, to distribute the workload evenly and avoid individual electrolyzers from working for a long time, thereby reducing the performance degradation of individual equipment and extending the service life of the overall system, the start-up and shutdown sequence of the individual electrolyzers in the hydrogen production electrolyzer cluster is controlled based on the operating hours of the individual electrolyzers. This balances the working time of each electrolyzer in the hydrogen production electrolyzer cluster, averages the wear of the electrolyzers, and improves the service life of the electrolyzer cluster.

[0119] Step S304: The wind power hydrogen production capacity is allocated to the hydrogen production electrolyzer cluster using a single-cell equalization control strategy. For details, please refer to [link to relevant documentation]. Figure 2 Step S204 of the illustrated embodiment will not be described again here.

[0120] This embodiment provides a control method for a hydrogen production electrolyzer cluster. Based on the input power of the hydrogen production electrolyzer cluster and the rated power of a single electrolyzer, the number of electrolyzers to be started is determined. Then, the comparison result between the number of electrolyzers to be started and the number of electrolyzers already started is used to determine the single electrolyzer balancing control strategy, thereby balancing the utilization time of each electrolyzer in the hydrogen production electrolyzer cluster and improving the service life of the hydrogen production electrolyzer cluster.

[0121] The following specific embodiment illustrates the detailed steps of a control method for a hydrogen production electrolyzer cluster.

[0122] Example 1:

[0123] like Figure 4 As shown, the specific steps of a hydrogen electrolyzer cluster control method for mitigating wind power fluctuations include:

[0124] Step 1: Obtain the real-time wind power output of a wind farm with a smooth window length N=20. Determine the grid-connected reference power based on the real-time wind power output. The wind power grid-connected reference power curve is shown below. Figure 5 As shown.

[0125] Step 2: Determine the wind power output power that the electrolyzer cluster needs to absorb based on the wind power grid connection reference power, which is the input power of the hydrogen production electrolyzer cluster.

[0126] like Figure 6 As shown, the measured wind power P(t) and the grid-connected reference wind power P ref The difference (t) represents the fluctuation component of wind power, which serves as the input power P of the electrolytic cell cluster. e :

[0127]

[0128] Step 3: Execute the control strategy of the electrolyzer cluster according to the input power of the hydrogen production electrolyzer cluster.

[0129] For a hydrogen production electrolyzer cluster composed of n electrolyzers, first, number each electrolyzer in the hydrogen production electrolyzer cluster and store it in Table 1. Each column records two data corresponding to the electrolyzer with the numbered electrolyzer. The first represents the startup time of the electrolyzer, which is set to 0 if the electrolyzer is shut down, and the second represents the running hours of the electrolyzer.

[0130] Table 1:

[0131] Startup time Operating hours Electrolytic Cell #1 <![CDATA[a 11 ]]> <![CDATA[a 12 ]]> Electrolytic Cell #2 <![CDATA[a 21 ]]> <![CDATA[a 22 ]]> Electrolytic Cell #3 <![CDATA[a 31 ]]> <![CDATA[a 32 ]]> ... ... ... Electrolytic cell #n <![CDATA[a n1 ]]> <![CDATA[a n2 ]]>

[0132] Determine the number of electrolyzers to be started (TEN) according to the input power of the hydrogen production electrolyzer cluster, and obtain the number of currently started electrolyzers (AEN); judge whether TEN is greater than AEN. If TEN > AEN, it means that electrolyzers need to be started in the system to increase the hydrogen production power. If TEN < AEN, it means that some electrolyzers need to be shut down to reduce the hydrogen production power.

[0133] For TEN > AEN:

[0134] (1) Search in the first column of matrix A for the set B = {i|a i1 = 0, 1 ≤ i ≤ n} composed of the numbers representing the currently shutdown electrolyzers.

[0135] (2) Find the i' corresponding to the minimum element in the set {a i′2 |i' ∈ B}, and start the i'-th electrolyzer.

[0136] (3) Update the corresponding elements in matrix A:

[0137] a i′1 = the current startup time

[0138] (4) Update the number of started electrolyzers AEN:

[0139] AEN = AEN + 1

[0140] Repeat the above steps (TEN - AEN) times in sequence until AEN = TEN.

[0141] For TEN < AEN:

[0142] (1) Search in the first column of matrix A for the set B = {i|a i1 ≠ 0, 1 ≤ i ≤ n} composed of the numbers representing the currently running electrolyzers.

[0143] (2) Find the set {a i′2 + (t - a i′1The largest element in B is i′, which corresponds to i′, and the i′th electrolytic cell is shut down. t represents the current time.

[0144] (3) Update the corresponding elements in matrix A:

[0145] a i′2 =a i′2 +current time-a i′1

[0146] a i′1 =0

[0147] (4) Update the number of started electrolytic cells AEN:

[0148] AEN = AEN-1

[0149] Repeat the above steps (AEN-TEN) times until AEN = AEN.

[0150] This embodiment also provides a control device for a hydrogen electrolyzer cluster, which is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0151] This embodiment provides a control device for a hydrogen production electrolyzer cluster, such as... Figure 7 As shown, it includes:

[0152] The first determining module 701 is used to obtain the real-time output power of wind power within a preset time window and determine the reference power for grid connection of wind power based on the real-time output power of wind power within the preset time window.

[0153] The second determining module 702 is used to obtain the measured wind power and determine the input power of the hydrogen electrolyzer cluster based on the wind power grid connection reference power and the measured wind power.

[0154] The third determining module 703 is used to obtain the status of each electrolyzer in the hydrogen production electrolyzer cluster and determine the single electrolyzer equalization control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer.

[0155] The allocation module 704 is used to allocate wind power hydrogen production capacity to the hydrogen production electrolyzer cluster using a single-cell electrolyzer equalization control strategy.

[0156] In some alternative implementations, the first determining module 701 includes:

[0157] The first calculation unit is used to calculate the moving average value of wind power based on the real-time output power of wind power within a preset time window;

[0158] The second calculation unit is used to calculate the moving standard deviation of wind power based on the real-time output power of wind power and the moving average of wind power.

[0159] The third calculation unit is used to calculate the grid-connected reference power of wind power based on the moving average and moving standard deviation of wind power.

[0160] In some optional implementations, the formula for calculating the input power of the hydrogen electrolyzer cluster in the second determining module 702 is as follows:

[0161]

[0162] Among them, P e P(t) represents the input power of the hydrogen electrolyzer cluster, and P(t) represents the measured wind power. ref (t) represents the reference power for wind power grid connection.

[0163] In some alternative implementations, the third determining module 703 includes:

[0164] The building unit is used to number each electrolyzer in the hydrogen production electrolyzer cluster and to build a matrix based on the status and number of each electrolyzer.

[0165] The determination unit is used to obtain the rated power of a single electrolyzer and determine the number of electrolyzers to be started based on the input power of the hydrogen production electrolyzer cluster and the rated power of a single electrolyzer.

[0166] The comparison unit is used to obtain the number of electrolytic cells that have been started, compare the number of electrolytic cells to be started with the number of electrolytic cells that have been started, and determine the single electrolytic cell equalization control strategy based on the comparison result.

[0167] In some alternative implementations, the comparison unit includes:

[0168] The first judgment subunit is used to determine the number of operating hours of the shut-down electrolytic cells based on a matrix if the number of electrolytic cells to be started is greater than the number of electrolytic cells already started.

[0169] The first selection subunit is used to select the electrolytic cell with the fewest operating hours to start up, and to update the matrix and the number of electrolytic cells that have been started.

[0170] The first control subunit is used to compare the updated number of started electrolytic cells with the number of electrolytic cells to be started. Based on the comparison result, the start-up of the stopped electrolytic cells is controlled by the number of operating hours of the stopped electrolytic cells until the number of started electrolytic cells equals the number of electrolytic cells to be started, at which point the control of starting the stopped electrolytic cells is stopped.

[0171] In some optional implementations, the comparison unit further includes:

[0172] The second judgment subunit is used to determine the number of operating hours of the electrolytic cells based on the matrix if the number of electrolytic cells to be started is greater than the number of electrolytic cells already started.

[0173] The second selection subunit is used to select the operating electrolytic cell with the highest number of operating hours for shutdown operation, and update the matrix and the number of electrolytic cells that have been started;

[0174] The second control subunit is used to compare the updated number of started electrolytic cells with the number of electrolytic cells to be started. Based on the comparison result, the operating hours of the running electrolytic cells are used to control the shutdown of the electrolytic cells until the number of started electrolytic cells equals the number of electrolytic cells to be started, at which point the control of shutting down the running electrolytic cells is stopped.

[0175] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0176] In this embodiment, the control device for a hydrogen electrolyzer cluster is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0177] This invention also provides a computer device having the above-described features. Figure 7 The diagram shows a control device for a hydrogen electrolyzer cluster.

[0178] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of the present invention, such as... Figure 8As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 8 Take a processor 10 as an example.

[0179] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0180] The memory 20 stores instructions executable by at least one processor 10 to cause the at least one processor 10 to perform the method shown in the above embodiments.

[0181] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0182] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0183] The computer device also includes an input device 30 and an output device 40. The processor 10, memory 20, input device 30, and output device 40 can be connected via a bus or other means. Figure 8 Taking the example of a connection between China and Israel via a bus.

[0184] Input device 30 can receive input numerical or character information, and generate key signal inputs related to user settings and function control of the computer device, such as a touchscreen, keypad, mouse, trackpad, touchpad, joystick, one or more mouse buttons, trackball, joystick, etc. Output device 40 may include display devices, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibration motors). The aforementioned display devices include, but are not limited to, liquid crystal displays, light-emitting diodes, displays, and plasma displays. In some alternative embodiments, the display device may be a touchscreen.

[0185] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code, which, when accessed and executed by the computer, processor, or hardware, implements the methods shown in the above embodiments.

[0186] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0187] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A control method for a cluster of hydrogen electrolyzers, characterized in that, The method comprises: acquiring real-time output power of wind power in a preset time window, determining wind power grid-connected reference power based on the real-time output power of wind power in the preset time window; acquiring real-measured power of wind power, determining input power of a hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the real-measured power of wind power; acquiring states of each electrolyzer in the hydrogen production electrolyzer cluster, determining a single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the states of each electrolyzer; allocating wind power hydrogen production power to the hydrogen production electrolyzer cluster by using the single electrolyzer balancing control strategy; the determination of the wind power grid-connected reference power based on the real-time output power of wind power in the preset time window comprises: calculating a moving average of wind power based on the real-time output power of wind power in the preset time window; calculating a moving standard deviation of wind power based on the real-time output power of wind power and the moving average of wind power; calculating the wind power grid-connected reference power based on the moving average of the wind power and the moving standard deviation of the wind power; wherein the wind power grid-connected reference power P ref The calculation formula of (t) is as follows: P ref (t) = P m (t) - S m (t) where P m (t) denotes the moving average of the wind power at time t, S m (t) denotes the moving standard deviation of the wind power at time t.

2. The method of claim 1, wherein, the determination of the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the real-measured power of wind power, wherein a calculation formula of the input power of the hydrogen production electrolyzer cluster is as follows: where P e (t) represents the input power of the hydrogen production electrolyzer cluster, P(t) represents the measured power of the wind power, P ref (t) represents the wind power grid-connected reference power.

3. The method of claim 1, wherein, the determination of the single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the states of each electrolyzer comprises: numbering each electrolyzer in the hydrogen production electrolyzer cluster, and constructing a matrix based on the states of each electrolyzer and the numbering; acquiring rated power of a single electrolyzer, determining a number of electrolyzers to be started based on the input power of the hydrogen production electrolyzer cluster and the rated power of the single electrolyzer; acquiring a number of started electrolyzers, comparing the number of electrolyzers to be started with the number of started electrolyzers, and determining a single electrolyzer balancing control strategy based on a comparison result.

4. The method of claim 3, wherein, the comparison of the number of electrolyzers to be started with the number of started electrolyzers and the determination of the single electrolyzer balancing control strategy based on a comparison result comprises: if the number of electrolyzers to be started is greater than the number of started electrolyzers, determining a running hour number of a shutdown electrolyzer based on the matrix; selecting the shutdown electrolyzer with the smallest running hour number to perform a starting operation, and updating the matrix and the number of started electrolyzers; comparing the updated number of started electrolyzers with the number of electrolyzers to be started, and controlling the starting of a shutdown electrolyzer by using the running hour number of the shutdown electrolyzer based on a comparison result until the number of started electrolyzers is equal to the number of electrolyzers to be started, and then stopping the control of the starting of the shutdown electrolyzer.

5. The method of claim 3, wherein, the comparison of the number of electrolyzers to be started with the number of started electrolyzers and the determination of the single electrolyzer balancing control strategy based on a comparison result further comprises: if the number of electrolyzers to be started is greater than the number of started electrolyzers, determining a running hour number of a running electrolyzer based on the matrix; selecting the running electrolyzer with the largest running hour number to perform a shutdown operation, and updating the matrix and the number of started electrolyzers; The updated number of started electrolytic cells is compared with the number of electrolytic cells to be started, and based on the comparison result, the running hours of the running electrolytic cells are used to control the shutdown of the shutdown electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, and then the control of the shutdown of the running electrolytic cells is stopped.

6. A control device of a hydrogen production electrolyzer cluster, characterized by, The device comprises: The first determination module is configured to obtain wind power real-time output power in a preset time window, and determine wind power grid-connected reference power based on the wind power real-time output power in the preset time window. The second determination module is configured to obtain wind power measured power, and determine input power of a hydrogen production electrolytic cell cluster based on the wind power grid-connected reference power and the wind power measured power. The third determination module is configured to obtain states of each electrolytic cell in the hydrogen production electrolytic cell cluster, and determine a single electrolytic cell equalization control strategy based on the input power of the hydrogen production electrolytic cell cluster and the states of each electrolytic cell. The distribution module is configured to distribute wind power hydrogen production power to the hydrogen production electrolytic cell cluster by using the single electrolytic cell equalization control strategy. The first determination module comprises: The first calculation unit is configured to calculate a moving average of wind power based on wind power real-time output power in a preset time window. The second calculation unit is configured to calculate a moving standard deviation of wind power based on wind power real-time output power and the moving average of wind power. The third calculation unit is configured to calculate the wind power grid-connected reference power based on the moving average of the wind power and the moving standard deviation of the wind power; wherein the wind power grid-connected reference power P ref The calculation formula of (t) is as follows: P ref (t) = P m (t) - S m (t) where P m (t) denotes the moving average of the wind power at time t, S m (t) denotes the moving standard deviation of the wind power at time t.

7. A computer device, comprising: The device comprises: A memory and a processor, which are communicatively connected, the memory stores computer instructions, and the processor executes the computer instructions to perform the control method of the hydrogen production electrolytic cell cluster according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions, and the computer instructions are used to make a computer execute the control method of the hydrogen production electrolytic cell cluster according to any one of claims 1 to 5.

9. A computer program product, characterised in that, The computer instructions are used to make a computer execute the control method of the hydrogen production electrolytic cell cluster according to any one of claims 1 to 5.

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