Control method and device for hydrogen production electrolytic cell cluster

Abstract

The invention relates to the technical field of hydrogen production electrolytic cell cluster control, and discloses a control method and device for a hydrogen production electrolytic cell cluster, and the method comprises the steps: obtaining the wind power real-time output power in a preset time window, and determining the wind power integration reference power based on the wind power real-time output power in the preset time window; wind power actually measured power is obtained, and input power of the hydrogen production electrolytic cell cluster is determined based on the wind power grid-connected reference power and the wind power actually measured power; obtaining the state of each electrolytic cell in the hydrogen production electrolytic cell cluster, and determining a single electrolytic cell balance control strategy based on the input power of the hydrogen production electrolytic cell cluster and the state of each electrolytic cell; and distributing wind power hydrogen production power for the hydrogen production electrolytic cell cluster by utilizing a single electrolytic cell balance control strategy. The utilization rate of wind power output power is increased, the working time of each electrolytic cell in the hydrogen production electrolytic cell cluster is balanced, the abrasion condition of the electrolytic cells is averaged, and the service life of the hydrogen production electrolytic cell cluster is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production electrolyzer cluster control, and in particular to a control method and device for a hydrogen production electrolyzer cluster. Background Art

[0002] As a zero-carbon clean energy, hydrogen can reduce carbon emissions and achieve large-scale renewable energy consumption. However, the use of fossil fuels to produce hydrogen will produce a large amount of greenhouse gases. Electrolyzers provide the possibility of using electricity generated by renewable energy, nuclear energy, etc. to produce green hydrogen. Among renewable energy sources, wind energy plays an important role in achieving the goal of carbon neutrality in the future. Therefore, hydrogen production through wind power is one of the future technological trends.

[0003] In the current wind power hydrogen production process, the control of the electrolyzer cluster is mostly considered from the perspective of the electrolyzer as a whole, so that the power of the electrolyzer cluster is balanced with the input power. Less consideration is given to the balancing strategy between the individual electrolyzers, which often leads to excessive use of individual electrolyzers, causing the life of some electrolyzers to be greatly shortened. Summary of the invention

[0004] In view of this, the present invention provides a control method and device for a hydrogen production electrolyzer cluster to solve the problem that the control of the electrolyzer cluster pays less attention to the balance strategy between the electrolyzer cells, resulting in excessive use of the single electrolyzer cells and greatly shortening the life of some electrolyzers.

[0005] In a first aspect, the present invention provides a method for controlling a hydrogen production electrolyzer cluster, the method comprising:

[0006] Obtaining the real-time output power of wind power within a preset time window, and determining the wind power grid-connected reference 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 wind power grid-connected reference power and the measured wind power;

[0008] Obtaining the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determining a single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer;

[0009] The single electrolyzer balancing control strategy is used to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster.

[0010] The present embodiment provides a control method for a hydrogen production electrolyzer cluster, which determines the wind power grid-connected reference power through the real-time wind power output power within a preset time window, determines the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the wind power measured power, determines the single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer, and utilizes the hydrogen production electrolyzer cluster to absorb the fluctuating component of wind power, thereby achieving the goal of smoothing the fluctuating power of wind power, improving the utilization rate of wind power output power, and reducing power abandonment; and, through the single electrolyzer balancing control strategy, the wind power hydrogen production power is allocated to the hydrogen production electrolyzer cluster, the working time of each electrolyzer in the hydrogen production electrolyzer cluster is balanced, the wear of the electrolyzer is averaged, and the service life of the hydrogen production electrolyzer cluster is improved.

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

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

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

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

[0015] The present embodiment provides a control method for a hydrogen production electrolyzer cluster, which calculates the moving average value of wind power and the moving standard deviation of wind power, and then calculates the wind power grid-connected reference power based on the moving average value of wind power and the moving standard deviation of wind power, thereby achieving accurate calculation of the wind power grid-connected reference power, providing a data basis for the subsequent calculation of the input power of the hydrogen production electrolyzer cluster, and improving the utilization rate of the wind power output power.

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

[0017]

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

[0019] In an optional embodiment, a single electrolyzer balancing control strategy is determined based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer, including:

[0020] Number each electrolyzer in the hydrogen production electrolyzer cluster, and construct a matrix 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 started electrolytic cells is obtained, the number of electrolytic cells to be started is compared with the number of started electrolytic cells, and a single electrolytic cell balancing control strategy is determined based on the comparison result.

[0023] The present embodiment provides a control method for a hydrogen production electrolyzer cluster, which determines 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, and then determines the single electrolyzer balancing control strategy using the comparison result between the number of electrolyzers to be started and the number of electrolyzers that have been started, 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 an optional embodiment, the number of electrolytic cells to be started is compared with the number of electrolytic cells that have been started, and a single electrolytic cell balancing 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 stopped electrolytic cells is determined based on the matrix;

[0026] Select the stopped electrolytic cell with the smallest number of running hours for startup operation, and update the matrix and the number of started electrolytic cells;

[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 using the running hours of the stopped electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, then the start-up of the stopped electrolytic cells is stopped.

[0028] The present embodiment provides a control method for a hydrogen production electrolyzer cluster. Since the goal of the single electrolyzer balancing control strategy is to ensure that the lifespans of the various electrolyzers are relatively balanced, that is, to evenly distribute the workload and avoid long-term operation of individual electrolyzers, thereby reducing the performance degradation of a single device and extending the service life of the overall system, the start and stop sequence of the single electrolyzers in the hydrogen production electrolyzer cluster is controlled based on the operating hours of the single electrolyzers, so as to balance the working time of each electrolyzer in the hydrogen production electrolyzer cluster, average the wear of the electrolyzers, and improve the service life of the electrolyzer cluster.

[0029] In an optional embodiment, the number of electrolytic cells to be started is compared with the number of electrolytic cells that have been started, and a single electrolytic cell balancing 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 operating electrolytic cells is determined based on the matrix;

[0031] Select the operating electrolytic cell with the largest number of operating hours for 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 shutdown of the electrolytic cells is controlled by the running hours of the running electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, and then the shutdown of the running electrolytic cells is stopped.

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

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

[0035] The second determination module is used to obtain the measured power of wind power and determine the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the measured power of wind power;

[0036] The third determination module is used to obtain the state of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the single electrolyzer balance control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer;

[0037] The allocation module is used to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster by utilizing the single electrolyzer balancing control strategy.

[0038] In a third aspect, 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 control method of the hydrogen production electrolyzer cluster of the first aspect or any corresponding embodiment thereof by executing the computer instructions.

[0039] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the method for controlling a hydrogen production electrolyzer cluster according to the first aspect or any corresponding embodiment thereof.

[0040] In a fifth aspect, the present invention provides a computer program product, comprising computer instructions for causing a computer to execute the method for controlling a hydrogen production electrolyzer cluster according to the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0043] Figure 2 is a flow chart of another method for controlling a hydrogen production electrolyzer cluster according to an embodiment of the present invention;

[0044] Figure 3 is a flow chart of another method for controlling a hydrogen production electrolyzer cluster according to an embodiment of the present invention;

[0045] Figure 4 It is a flow chart of a method for controlling a hydrogen production electrolyzer cluster for smoothing wind power fluctuation according to an embodiment of the present invention;

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

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

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

[0049] Figure 8 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0051] Wind power hydrogen production is divided into off-grid hydrogen production and grid-connected hydrogen production. Off-grid hydrogen production needs to absorb the output power of all wind power generation, and the capacity demand of the hydrogen production system is relatively large. Therefore, the fixed asset investment cost of the hydrogen production system is relatively high and the economic efficiency is relatively low. Grid-connected hydrogen production only needs to absorb the fluctuating component of wind power, so the capacity configuration of the hydrogen production system is also correspondingly lower, and the investment cost of the entire system is lower, which improves the utilization rate of wind power output.

[0052] The current electrolyzer cluster operation process faces the following problems: The operation of the electrolyzer cluster lacks a balancing strategy. In actual electrolysis hydrogen production projects, the control of the electrolyzer cluster is mostly considered from the overall perspective, so that the power of the electrolyzer cluster is balanced with the input power. The balancing strategy between the electrolyzer cells is rarely considered, which often leads to the overuse of the single electrolyzer, resulting in a significant shortening of the life of some electrolyzers.

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

[0054] In this embodiment, a control method for a hydrogen production electrolyzer cluster is provided, which can be used for server-type equipment. Figure 1 is a flow chart of a control method for a hydrogen production electrolyzer cluster according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0055] Step S101: acquiring the real-time output power of wind power within a preset time window, and determining the wind power grid-connected reference power based on the real-time output power of wind power within the preset time window.

[0056] Step S102, obtaining the measured wind power, and determining the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the measured wind power.

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

[0058]

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

[0060] Step S103, obtaining the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determining a single electrolyzer balancing 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 electrolyzer balancing control strategy is to ensure that the lifespan of each electrolyzer is relatively balanced, that is, to evenly distribute the workload and avoid individual electrolyzers working for a long time, thereby reducing the performance degradation of a single device and extending the service life of the overall system.

[0062] Step S104, using a single electrolyzer balancing control strategy to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster.

[0063] The present embodiment provides a control method for a hydrogen production electrolyzer cluster, which determines the wind power grid-connected reference power through the real-time wind power output power within a preset time window, determines the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the wind power measured power, determines the single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer, and utilizes the hydrogen production electrolyzer cluster to absorb the fluctuating component of wind power, thereby achieving the goal of smoothing the fluctuating power of wind power, improving the utilization rate of wind power output power, and reducing power abandonment; and, through the single electrolyzer balancing control strategy, the wind power hydrogen production power is allocated to the hydrogen production electrolyzer cluster, the working time of each electrolyzer in the hydrogen production electrolyzer cluster is balanced, the wear of the electrolyzer is averaged, and the service life of the hydrogen production electrolyzer cluster is improved.

[0064] In this embodiment, a control method for a hydrogen production electrolyzer cluster is provided, which can be used for the above-mentioned server-type equipment. Figure 2 is a flow chart of a control method for a hydrogen production electrolyzer cluster according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0065] Step S201: acquiring the real-time output power of wind power within a preset time window, and determining the wind power grid-connected reference power based on the real-time output power of wind power within the preset time window.

[0066] Specifically, the above step S201 includes:

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

[0068] Specifically, the moving average algorithm is used to separate the minute-level wind power. The moving average can eliminate the sudden change of wind power caused by the sudden increase or decrease of wind speed. Therefore, the real-time output power of wind power within the selected window length N is averaged, and the calculated result is used as the power value after smoothing at time t; where the moving average value of wind power at time t P mThe calculation formula of (t) is as follows:

[0069]

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

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

[0072] Specifically, the moving standard deviation S of wind power at time t is m The calculation formula of (t) is as follows:

[0073]

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

[0075] Specifically, the wind power grid-connected reference power P ref The calculation formula of (t) is as follows:

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

[0077] Step S202: Obtain the measured wind power, and determine the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the measured wind power. Figure 1 Step S102 of the illustrated embodiment will not be described in detail here.

[0078] Step S203, obtaining the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determining the single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer. Figure 1 Step S103 of the illustrated embodiment will not be described in detail here.

[0079] Step S204: Use the single electrolyzer balancing control strategy to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster. Figure 1 Step S104 of the illustrated embodiment will not be described in detail here.

[0080] The present embodiment provides a control method for a hydrogen production electrolyzer cluster, which calculates the moving average value of wind power and the moving standard deviation of wind power, and then calculates the wind power grid-connected reference power based on the moving average value of wind power and the moving standard deviation of wind power, thereby achieving accurate calculation of the wind power grid-connected reference power, providing a data basis for the subsequent calculation of the input power of the hydrogen production electrolyzer cluster, and improving the utilization rate of the wind power output power.

[0081] In this embodiment, a control method for a hydrogen production electrolyzer cluster is provided, which can be used for the above-mentioned server-type equipment. Figure 3 is a flow chart of a control method for a hydrogen production electrolyzer cluster according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0082] Step S301, obtain the real-time output power of wind power within a preset time window, and determine the wind power grid-connected reference power based on the real-time output power of wind power within the preset time window. Figure 2 Step S201 of the illustrated embodiment will not be described in detail here.

[0083] Step S302: Obtain the measured wind power, and determine the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the measured wind power. Figure 2 Step S202 of the illustrated embodiment will not be described in detail here.

[0084] Step S303, obtaining the status of each electrolyzer in the hydrogen production electrolyzer cluster, and determining a single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the status of each electrolyzer.

[0085] Specifically, the above step S303 includes:

[0086] Step S3031, numbering each electrolyzer in the hydrogen production electrolyzer cluster, and constructing a matrix based on the status and number of each electrolyzer.

[0087] Specifically, each electrolyzer in the hydrogen production electrolyzer cluster is numbered, and the state of each electrolyzer in the hydrogen production electrolyzer cluster is represented by a matrix A, where the matrix can be represented as:

[0088]

[0089] Among them, the element a in matrix A ij The row subscript i represents the number of the electrolytic cell, and the element a in the matrix ij The column subscript j represents the state of the i-th electrolytic cell, and there are two state parameters, that is, the value range of j is 1, 2; a i1 represents the startup time of the ith electrolytic cell. When the electrolytic cell is shut down, a i1 Set to 0; a i2 It indicates the number of hours that 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, obtaining the rated power of a single electrolyzer, and determining 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 calculation formula for the number of electrolytic cells to be started TEN is as follows:

[0092]

[0093] Among them, P e represents the input power of the hydrogen production electrolyzer cluster, P represents the rated power of a single electrolyzer, and [] represents rounding operation.

[0094] Step S3033, obtaining the number of started electrolytic cells, comparing the number of electrolytic cells to be started with the number of started electrolytic cells, and determining a single electrolytic cell balancing control strategy based on the comparison result.

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

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

[0097] Step a1: 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.

[0098] Specifically, the numbers of the electrolytic cells currently shut down are searched in the first column of the matrix A and formed into a set.

[0099] Step a2, select the stopped electrolytic cell with the smallest number of running hours for startup operation, and update the matrix and the number of started electrolytic cells.

[0100] Specifically, the shut-down electrolytic cell with the smallest number of operating hours in the set is selected, and assuming that the i-th electrolytic cell is the shut-down electrolytic cell with the smallest number of operating hours, the i-th electrolytic cell is started.

[0101] Further, update the corresponding element in matrix A, then the updated element a i1 The value is the current boot time.

[0102] Furthermore, the updated number of started electrolytic cells AEN is expressed as:

[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, and based on the comparison result, use the running hours of the stopped electrolytic cells to control the start of the stopped electrolytic cells until the number of started electrolytic cells is equal to 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 started electrolytic cells is still greater than the number of electrolytic cells to be started, the above steps a1 to a2 are repeated until AEN is equal to TEN.

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

[0107] Step b1: 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 operating electrolytic cells is determined based on the matrix.

[0108] Specifically, the numbers of the electrolytic cells currently in operation are searched in the first column of the matrix A and formed into a set.

[0109] Step b2, selecting the operating electrolytic cell with the largest number of operating hours for shutdown operation, and updating the matrix and the number of started electrolytic cells.

[0110] Specifically, the electrolytic cell with the largest number of running hours among all the running electrolytic cells is searched in the set. Assuming that the i-th electrolytic cell is the electrolytic cell with the largest number of running hours, the i-th electrolytic cell performs a shutdown operation.

[0111] Further, update the elements in the matrix, the updated matrix element a i′2 It can be expressed 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 started 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, and based on the comparison result, use the running hours of the running electrolytic cells to control the shutdown of the electrolytic cells until the number of started electrolytic cells is equal to 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 started electrolytic cells is still less than the number of electrolytic cells to be started, the above steps b1 to b2 are repeated until AEN is equal to TEN.

[0118] The present embodiment provides a control method for a hydrogen production electrolyzer cluster. Since the goal of the single electrolyzer balancing control strategy is to ensure that the lifespans of the various electrolyzers are relatively balanced, that is, to evenly distribute the workload and avoid long-term operation of individual electrolyzers, thereby reducing the performance degradation of a single device and extending the service life of the overall system, the start and stop sequence of the single electrolyzers in the hydrogen production electrolyzer cluster is controlled based on the operating hours of the single electrolyzers, so as to balance the working time of each electrolyzer in the hydrogen production electrolyzer cluster, average the wear of the electrolyzers, and improve the service life of the electrolyzer cluster.

[0119] Step S304: Use the single electrolyzer balancing control strategy to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster. Figure 2 Step S204 of the illustrated embodiment will not be described in detail here.

[0120] The present embodiment provides a control method for a hydrogen production electrolyzer cluster, which determines 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, and then determines the single electrolyzer balancing control strategy using the comparison result between the number of electrolyzers to be started and the number of electrolyzers that have been started, 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 specific steps of a control method for a hydrogen production electrolyzer cluster are described below through a specific embodiment.

[0122] Embodiment 1:

[0123] like Figure 4 As shown, a method for controlling a hydrogen production electrolyzer cluster for smoothing wind power fluctuation power includes the following specific steps:

[0124] Step 1: Obtain the real-time wind power output power of a wind farm with a smoothing window length of N = 20, and determine the wind power grid-connected reference power according to the real-time wind power output power. The wind power grid-connected reference power curve is as follows: Figure 5 shown.

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

[0126] like Figure 6 As shown in the figure, the measured wind power P(t) and the wind power grid-connected reference power P ref The difference between (t) is the fluctuation component of wind power, which is used as the input power P of the electrolyzer 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. Among them, each column records two data corresponding to the electrolyzer with the corresponding number. 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 Electrolyzer #1 <![CDATA[a 11 ]]> <![CDATA[a 12 ]]> Electrolyzer #2 <![CDATA[a 21 ]]> <![CDATA[a 22 ]]> Electrolyzer #3 <![CDATA[a 31 ]]> <![CDATA[a 32 ]]> ... ... ... Electrolyzer #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′1)|i′∈B}, the i′th electrolytic cell is shut down, and 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 activated electrolytic cells AEN:

[0148] AEN=AEN-1

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

[0150] In this embodiment, a control device for a hydrogen production electrolyzer cluster is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

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

[0152] The first determination module 701 is used to obtain the real-time output power of wind power within a preset time window, and determine the wind power grid-connected reference power based on the real-time output power of wind power within the preset time window;

[0153] The second determination 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-connected reference power and the measured wind power;

[0154] The third determination module 703 is used to obtain the state of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer;

[0155] The allocation module 704 is used to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster by using the single electrolyzer balancing control strategy.

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

[0157] A first calculation unit, configured to calculate a moving average of wind power based on real-time wind power output within a preset time window;

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

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

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

[0161]

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

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

[0164] A construction unit, used for numbering each electrolyzer in the hydrogen production electrolyzer cluster, and constructing a matrix based on the state and number of each electrolyzer;

[0165] A determination unit, 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 the single electrolyzer;

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

[0167] In some optional embodiments, the comparison unit includes:

[0168] A first judgment subunit is used to determine the number of operating hours of the stopped electrolytic cells based on the matrix if the number of electrolytic cells to be started is greater than the number of electrolytic cells that have been started;

[0169] The first selection subunit is used to select the stopped electrolytic cell with the smallest number of running hours for startup operation, and update the matrix and the number of started electrolytic cells;

[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, and based on the comparison result, use the running hours of the stopped electrolytic cells to control the start of the stopped electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, then stop controlling the start of the stopped electrolytic cells.

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

[0172] A second judgment subunit is used to determine the number of operating hours of the operating electrolytic cells based on the matrix if the number of electrolytic cells to be started is greater than the number of electrolytic cells that have been started;

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

[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, and based on the comparison result, use the running hours of the running electrolytic cells to control the shutdown of the shut-down electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, then stop controlling the shutdown of the running electrolytic cells.

[0175] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

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

[0177] The embodiment of the present invention also provides a computer device having the above Figure 7 A control device for a hydrogen production electrolyzer cluster is shown.

[0178] See also Figure 8 , Figure 8 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Figure 8As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 8 A processor 10 is taken as an example.

[0179] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0180] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0181] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0182] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a 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, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Figure 8 The example of connecting through bus is taken in the following.

[0184] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0185] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0186] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

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

Claims

1. A control method for a hydrogen production electrolyzer cluster, characterized in that: The method comprises: Acquire the real-time output power of wind power within a preset time window, and determine the wind power grid-connected reference power based on the real-time output power of wind power within the preset time window; Obtaining the wind power measured power, and determining the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the wind power measured power; Acquire the state of each electrolyzer in the hydrogen production electrolyzer cluster, and determine a single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer; The single electrolyzer balancing control strategy is used to allocate wind power hydrogen production power to the hydrogen production electrolyzer cluster.

2. The method according to claim 1, characterized in that The determining of the wind power grid-connected reference power based on the wind power real-time output power within the preset time window includes: Calculating a moving average of wind power based on the real-time output power of wind power within the preset time window; Calculating a moving standard deviation of wind power based on the real-time wind power output power and the moving average of the wind power; The wind power grid-connected reference power is calculated based on a moving average value of the wind power and a moving standard deviation of the wind power.

3. The method according to claim 1, characterized in that: The input power of the hydrogen production electrolyzer cluster is determined based on the wind power grid-connected reference power and the wind power measured power; wherein the calculation formula of the input power of the hydrogen production electrolyzer cluster is as follows: Among them, P e (t) represents the input power of the hydrogen production electrolyzer cluster, P(t) represents the measured wind power, and P ref (t) represents the reference power of wind power grid connection.

4. The method according to claim 1, characterized in that The determining of a single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer comprises: Numbering each electrolyzer in the hydrogen production electrolyzer cluster, and constructing a matrix based on the status and number of each electrolyzer; Obtaining the rated power of a single electrolyzer, and determining the 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; The number of started electrolytic cells is obtained, the number of electrolytic cells to be started is compared with the number of started electrolytic cells, and a single electrolytic cell balancing control strategy is determined based on the comparison result.

5. The method according to claim 4, characterized in that The comparing the number of the electrolytic cells to be started with the number of the electrolytic cells that have been started, and determining a single electrolytic cell balancing control strategy based on the comparison result, includes: If the number of electrolytic cells to be started is greater than the number of electrolytic cells already started, determining the number of operating hours of the stopped electrolytic cells based on the matrix; Selecting the stopped electrolytic cell with the smallest number of operating hours to start up, and updating the matrix and the number of started electrolytic cells; 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 using the running hours of the stopped electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, then the start-up of the stopped electrolytic cells is stopped.

6. The method according to claim 4, characterized in that The method of comparing the number of the electrolytic cells to be started with the number of the electrolytic cells already started, and determining a single electrolytic cell balancing control strategy based on the comparison result, further includes: If the number of electrolytic cells to be started is greater than the number of electrolytic cells already started, determining the number of operating hours of the operating electrolytic cells based on the matrix; Selecting the operating electrolytic cell with the largest number of operating hours to perform a shutdown operation, and updating the matrix and the number of started electrolytic cells; The updated number of started electrolytic cells is compared with the number of electrolytic cells to be started. Based on the comparison result, the shutdown electrolytic cells are controlled using the running hours of the running electrolytic cells until the number of started electrolytic cells is equal to the number of electrolytic cells to be started, and then the shutdown of the running electrolytic cells is stopped.

7. A control device for a hydrogen production electrolyzer cluster, characterized in that: The device comprises: A first determination module is used to obtain the real-time output power of wind power within a preset time window, and determine the wind power grid-connected reference power based on the real-time output power of wind power within the preset time window; A second determination module is used to obtain the wind power measured power, and determine the input power of the hydrogen production electrolyzer cluster based on the wind power grid-connected reference power and the wind power measured power; A third determination module is used to obtain the state of each electrolyzer in the hydrogen production electrolyzer cluster, and determine the single electrolyzer balancing control strategy based on the input power of the hydrogen production electrolyzer cluster and the state of each electrolyzer; A distribution module is used to distribute wind power hydrogen production power to the hydrogen production electrolyzer cluster by utilizing the single electrolyzer balancing control strategy.

8. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the control method of the hydrogen production electrolyzer cluster according to any one of claims 1 to 6 by executing the computer instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the control method for the hydrogen production electrolyzer cluster according to any one of claims 1 to 6.

10. A computer program product, characterized in that The method comprises computer instructions for causing a computer to execute the method for controlling a hydrogen production electrolyzer cluster according to any one of claims 1 to 6.

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