Hydrogen system operation planning device

Abstract

To accurately create an operation plan for achieving efficient operation in a hydrogen system.SOLUTION: According to an embodiment, in a hydrogen system operation planning device, an acquisition unit is configured to acquire performance data related to performance of a plurality of hydrogen producing apparatuses, and tentative operation plan data related to a tentative operation plan tentatively created for an operation plan. A prediction unit is configured to acquire performance prediction data by predicting the performance of the plurality of hydrogen producing apparatuses during a plan object period on the basis of the performance data and the tentative operation plan data acquired by the acquisition unit. A planning unit is configured to acquire an operation plan by correcting the tentative operation plan on the basis of the performance prediction data acquired by the prediction of the prediction unit.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a hydrogen system operation planning device. [Background technology]

[0002] Hydrogen is attracting attention as a clean energy source that can replace fossil fuels.

[0003] Hydrogen is produced, for example, in a hydrogen system having a hydrogen production device that electrolyzes water. In some hydrogen systems, multiple hydrogen production devices are installed to produce large amounts of hydrogen. Various technologies have been proposed to efficiently produce hydrogen in hydrogen systems equipped with multiple hydrogen production devices. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6499365 [Patent Document 2] Patent No. 5618952 [Patent Document 3] WO2020 / 075771 Summary of the Invention [Problem to be solved by the invention]

[0005] In a hydrogen system, the performance of multiple hydrogen production devices may differ from one another. For example, the performance of multiple hydrogen production devices may differ due to different electrolysis methods, such as alkaline or polymer electrolyte, or due to variations in components.

[0006] Furthermore, variations in performance may occur among multiple hydrogen production devices due to the occurrence of deterioration. Deterioration of a hydrogen production device occurs, for example, when the components (electrodes, electrolyte membrane, etc.) that make up the hydrogen production device change due to operating conditions (starting up and stopping operation, load fluctuations, cumulative operating time, continuous operating time, etc.). For example, deterioration of a hydrogen production device may cause a decrease in operating efficiency, which is the ratio of the amount of hydrogen produced to the amount of power supplied. In addition, there may be an increase in the response time (responsiveness) required for the hydrogen production volume produced by the hydrogen production device to reach a target value, or an increase in the minimum duration for which the hydrogen production device can continue to produce hydrogen. Furthermore, deterioration in performance may cause breakdowns in hydrogen production devices.

[0007] In particular, when a hydrogen production device produces hydrogen using power output from a renewable energy power generation device, the power output from the renewable energy power generation device fluctuates, which can easily cause deterioration of the hydrogen production device.Furthermore, when responding to demand response to stabilize the power grid, the power supplied to the hydrogen production device fluctuates, which can easily cause deterioration of the hydrogen production device.

[0008] In conventional hydrogen production systems equipped with multiple hydrogen production devices, operation plans are created without predicting performance degradation of the hydrogen production devices, which can result in the inability to effectively utilize the multiple hydrogen production devices and make it difficult to ensure the desired amount of hydrogen production.In addition, depending on the minimum operating time and response time (responsiveness) of the hydrogen production devices, it can be difficult to respond appropriately to demand response.

[0009] In addition, similar performance degradation may occur among multiple hydrogen production devices, which may require maintenance to be performed at similar times for multiple hydrogen production devices. This may result in a situation where multiple hydrogen production devices cannot be operated due to maintenance, making it difficult to ensure the desired amount of hydrogen production.

[0010] Due to the above circumstances, it may not be easy to efficiently produce hydrogen in a hydrogen system in which multiple hydrogen production devices are installed.

[0011] Therefore, the problem to be solved by the present invention is to provide a hydrogen system operation planning device that can accurately create an operation plan that realizes efficient operation in a hydrogen system. [Means for solving the problem]

[0012] A hydrogen system operation planning device according to an embodiment has an acquisition unit, a prediction unit, and a planning unit, and creates an operation plan for operating multiple hydrogen production devices during a planned period in a hydrogen system equipped with multiple hydrogen production devices that produce hydrogen by receiving a supply of electric power. The acquisition unit is configured to acquire performance data related to the performance of the multiple hydrogen production devices and tentative operation plan data related to a tentative operation plan tentatively created for the operation plan. The prediction unit is configured to obtain performance prediction data by predicting the performance of the multiple hydrogen production devices during the planned period based on the performance data and tentative operation plan data acquired by the acquisition unit. The planning unit is configured to obtain the operation plan by correcting the tentative operation plan based on the performance prediction data obtained by the prediction unit. The performance data includes data on the power supplied to the multiple hydrogen production devices, data on the hydrogen produced by the multiple hydrogen production devices, and data on the status of the multiple hydrogen production devices. The performance prediction data includes data predicted for the deterioration state of the multiple hydrogen production devices over the planning period. The planning unit creates an operation plan by correcting the tentative operation plan so that the performance of the multiple hydrogen production devices over the planning period meets predetermined target values. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a block diagram that schematically shows the overall configuration including a hydrogen system 100 and a hydrogen system operation planning device 200 in an embodiment. [Figure 2] FIG. 2 is a block diagram showing the configuration of a hydrogen system operation planning device 200 according to an embodiment. [Figure 3A] FIG. 3A is a diagram illustrating an example of tentative operation plan data D1b in the embodiment. [Figure 3B] FIG. 3B is a diagram illustrating an example of performance prediction data D2 in the embodiment. [Figure 3C]FIG. 3C is a diagram illustrating an example of operation plan data D3 in the embodiment. [Figure 3D] FIG. 3D is a diagram illustrating an example of a transition of operation efficiency in the operation plan data D3 in the embodiment. [Figure 4] FIG. 4 is a block diagram that schematically shows the overall configuration including the hydrogen system 100 and the hydrogen system operation planning device 200 in the first modified example of the embodiment. [Figure 5] FIG. 5 is a diagram showing an example of power generation prediction data D0 relating to the power output by the renewable energy power generation device 130 and power supply data D0b relating to the power supplied from the renewable energy power generation device 130 to the hydrogen system 100 in the first variant of the embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of performance prediction data D2 in the second modification of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] [A] Overall configuration FIG. 1 is a block diagram that schematically shows the overall configuration including a hydrogen system 100 and a hydrogen system operation planning device 200 in an embodiment.

[0015] [A-1] Hydrogen System 100 As shown in Figure 1, the hydrogen system 100 comprises a hydrogen production unit 110 and a hydrogen storage device 120, and is configured to carry out operations to produce hydrogen based on an operation plan created by a hydrogen system operation planning device 200. Each of the components that make up the hydrogen system 100 will be explained in turn.

[0016] [A-1-1] Hydrogen Production Department 110 The hydrogen production unit 110 includes multiple hydrogen production devices 110A, 110B and is configured to produce hydrogen using power supplied from the power system 10 (power grid). Here, the multiple hydrogen production devices 110A, 110B are, for example, hydrogen electrolysis devices that generate hydrogen by electrolyzing water. In the hydrogen production unit 110, the multiple hydrogen production devices 110A, 110B may be installed in series or in parallel. Furthermore, although not shown, the multiple hydrogen production devices 110A, 110B may be equipped with auxiliary equipment (not shown).

[0017] [A-1-2] Hydrogen storage device 120 The hydrogen storage device 120 is configured to store hydrogen produced by the hydrogen production unit 110. The hydrogen storage device 120 is, for example, a gas tank and stores hydrogen gas. Alternatively, the hydrogen storage device 120 may be, for example, a liquefaction tank and is configured to store liquefied hydrogen. The hydrogen stored in the hydrogen storage device 120 is supplied to the hydrogen distribution network 300.

[0018] [A-2] Hydrogen system operation planning device 200 The hydrogen system operation planning device 200 is provided to create an operation plan for operating the multiple hydrogen production devices 110A, 110B that make up the hydrogen production section 110 in the hydrogen system 100 during the planning period TP.

[0019] Here, the hydrogen system operation planning device 200 receives information about each part of the hydrogen system 100 from the hydrogen system 100, and also receives commands from outside related to the operation of the hydrogen system 100. The hydrogen system operation planning device 200 then creates an operation plan for the hydrogen system 100 based on the input information and commands.

[0020] FIG. 2 is a block diagram showing the configuration of a hydrogen system operation planning device 200 according to an embodiment.

[0021] 2, the hydrogen system operation planning device 200 has an acquisition unit 210, a prediction unit 220, a planning unit 230, and a control unit 240. The hydrogen system operation planning device 200 includes an arithmetic unit (computer) and a storage device, and is configured so that the arithmetic unit functions as each unit using a program stored in the storage device.

[0022] [A-2-1] Acquisition section 210 As shown in FIG. 2, the acquisition unit 210 is configured to acquire performance data D1a and tentative operation plan data D1b.

[0023] Here, the performance data D1a is data related to the performance of the multiple hydrogen production devices 110A, 110B. Specifically, the performance data D1a includes data related to the power supplied to the multiple hydrogen production devices 110A, 110B (power amount, voltage, current, etc.), data related to the hydrogen produced by the multiple hydrogen production devices 110A, 110B (hydrogen production amount, temperature, pressure, etc.), and data related to the status of the multiple hydrogen production devices 110A, 110B (fault signals, status signals related to operation, shutdown, etc.). The performance data D1a is transmitted to the acquisition unit 210 from, for example, sensors (not shown) installed in the multiple hydrogen production devices 110A, 110B. Alternatively, the performance data D1a may be data set in the acquisition unit 210 according to measured values, for example.

[0024] The provisional operation plan data D1b is data related to a provisional operation plan provisionally created for operating the multiple hydrogen production devices 110A, 110B during the planned period TP. The provisional operation plan data D1b is data related to a provisional operation plan in which, for example, the hydrogen production amount is set to correspond to the hydrogen demand during the planned period TP. In this case, the provisional operation plan is set, for example, to increase the hydrogen production amount during periods when the hydrogen demand is high and decrease the hydrogen production amount during periods when the hydrogen demand is low. The hydrogen demand during the planned period TP may be the value of the hydrogen demand actually requested during the planned period TP, or may be a value predicted from past actual hydrogen demand. The hydrogen demand may be predicted using, for example, a demand prediction model created by learning from past actual hydrogen demand. Alternatively, the provisional operation plan data D1b may be any data, such as data randomly set by the acquisition unit 210, indicating the hydrogen production amount during the planned period TP.

[0025] The performance data D1a and tentative operation plan data D1b acquired by the acquisition unit 210 may be stored, and the contents of the performance data D1a and tentative operation plan data D1b may be displayed on the screen of a display device (not shown). The display device may be included in the hydrogen system operation planning device 200, or may be installed externally to the hydrogen system operation planning device 200.

[0026] [A-2-2] Prediction unit 220 As shown in FIG. 2, the prediction unit 220 is configured to obtain performance prediction data D2 based on the performance data D1a and the tentative operation plan data D1b acquired by the acquisition unit 210.

[0027] The performance prediction data D2 is data predicted regarding the transition of the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP. Here, the performance prediction data D2 includes data predicted regarding the deterioration state of the multiple hydrogen production devices 110A, 110B during the planning period TP.

[0028] The prediction unit 220 predicts the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP using a performance prediction model. The performance prediction model is a learning model, an equivalent circuit model, an electrochemical model, or the like, and is generated using, for example, the performance data D1a output from the acquisition unit 210 to the prediction unit 220. The performance prediction model is generated using a method such as regression analysis or a neural network.

[0029] The prediction unit 220 predicts, for example, the operating efficiency during the planning period TP as the performance of the multiple hydrogen production devices 110A, 110B during that period. The operating efficiency is, for example, the ratio of the amount of hydrogen produced to the power supplied to the hydrogen production devices 110A, 110B, and decreases due to operating conditions such as the cumulative operating time and continuous operating time. For this reason, the prediction unit 220 predicts the operating efficiency during the planning period TP from the performance data D1a and the tentative operation plan data D1b using a performance prediction model generated by learning, for example, the relationship between the cumulative operating time and the operating efficiency, and the relationship between the continuous operating time and the operating efficiency.

[0030] In addition to the operation efficiency, the prediction unit 220 may be configured to predict the response time (responsiveness) and minimum duration as performance of the hydrogen production devices 110A and 110B.

[0031] The performance prediction data D2 obtained by the prediction unit 220 may be stored, and the contents of the performance prediction data D2 may be displayed on the screen of a display device (not shown).

[0032] [A-2-3] Planning Department 230 2, the tentative operation plan data D1b and the performance prediction data D2 are input to the planning unit 230. The planning unit 230 is configured to generate an operation plan P by correcting (optimizing) the tentative operation plan corresponding to the tentative operation plan data D1b based on the performance prediction data D2, thereby obtaining operation plan data D3.

[0033] In the planning unit 230, the operation plan P is created by correcting the tentative operation plan so that the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP meets predetermined target values, for example.

[0034] Here, the target values ​​may be different among the multiple hydrogen production devices 110A, 110B. Furthermore, the target values ​​may not be constant throughout the entire planning period TP, but may be different at each time point. In addition, when there are target values ​​for each of multiple factors and corrections cannot be made to satisfy all of the target values ​​of the multiple factors, the operation plan P may be created by making corrections to satisfy some of the target values ​​of the multiple factors. Furthermore, for example, the planning period TP may be divided into multiple divided periods, and the operation plan P may be created by switching and correcting the factors in each of the multiple divided periods.

[0035] The planning unit 230 may set target values ​​for the integrated operation time and continuous operation time for the plurality of hydrogen production devices 110A, 110B, and perform correction so as to satisfy the target values.

[0036] The planning unit 230 may use the performance prediction model used by the prediction unit 220 when determining whether the performance of the multiple hydrogen production devices 110A, 110B satisfies the target value in the created operation plan P.

[0037] The planner 230 may perform the correction by taking into consideration other factors such as cost and environmental load. For example, the correction may be performed by creating a mixed integer linear programming problem equation in which the power supplied to the hydrogen production devices 110A, 110B is an independent variable, factors such as the amount of hydrogen produced by the hydrogen production devices 110A, 110B and the amount of hydrogen stored in the hydrogen storage / supply unit 120 are dependent variables, and factors such as cost are used as an evaluation function. The correction may be performed using various methods, such as metaheuristic methods such as genetic algorithms and machine learning methods such as reinforcement learning. The evaluation function may relate to the cumulative operating time or continuous operating time.

[0038] The planning unit 230 creates the operation plan P in any planning unit. For example, if the planning period TP is several years, the planning unit is, for example, one day, several days, or one week. Also, if the planning period TP is one month or less, the planning unit is, for example, 30 minutes.

[0039] The operation plan data D3 obtained by the planner 230 may be stored, and the contents of the operation plan data D3 may be displayed on the screen of a display device (not shown).

[0040] For example, if the planning unit 230 is unable to perform correction so as to satisfy the target value, the acquisition unit 210 may acquire tentative operation plan data D1b relating to the updated tentative operation plan, and the prediction unit 220 may acquire performance prediction data D2 using the tentative operation plan data D1b, etc., and correct (optimize) the updated tentative operation plan based on the performance prediction data D2 to create the operation plan P.

[0041] [A-2-4] Control unit 240 As shown in FIG. 2, the control unit 240 is configured to output control data CTL for controlling the operation of the hydrogen system 100 based on the operation plan data D3 acquired by the planning unit 230.

[0042] The control unit 240 controls the hydrogen production devices 110A, 110B to produce hydrogen based on the operation plan during the planning period TP by outputting the control data CTL to the hydrogen system 100. Naturally, the control unit 240 may also control the hydrogen production devices 110A, 110B to appropriately perform operations different from the operation plan depending on the state of the hydrogen production devices 110A, 110B.

[0043] [B] How to create operation plan P An example of a specific operation when creating the operation plan P in the hydrogen system operation planning device 200 of this embodiment will be described below.

[0044] [B-1] Acquisition of performance data D1a and temporary operation plan data D1b When the hydrogen system operation planning device 200 creates the operation plan P, as shown in FIG. 2, first, the acquisition unit 210 acquires the performance data D1a and the tentative operation plan data D1b.

[0045] As described above, the performance data D1a is data relating to the performance of the multiple hydrogen production devices 110A, 110B. For example, the acquisition unit 210 acquires actual data (planned data and past data) relating to the operating efficiency of each of the multiple hydrogen production devices 110A, 110B as the performance data D1a.

[0046] FIG. 3A is a diagram illustrating an example of tentative operation plan data D1b in the embodiment.

[0047] 3A shows an example of temporary operation plan data D1b for a planning period TP from January 2022 to December 2024. In FIG. 3A, the upper part shows temporary operation plan data D1b created for one hydrogen production apparatus 110A of the multiple hydrogen production apparatuses 110A, 110B, with the horizontal axis representing time and the vertical axis representing electric power EA (MW) supplied to the hydrogen production apparatus 110A. In FIG. 3A, the lower part shows temporary operation plan data D1b created for the other hydrogen production apparatus 110B of the multiple hydrogen production apparatuses 110A, 110B, with the horizontal axis representing time and the vertical axis representing electric power EB (MW) supplied to the hydrogen production apparatus 110B.

[0048] 3A, the tentative operation plan data D1b is data related to a tentative operation plan that is provisionally created for operating the multiple hydrogen production devices 110A, 110B during the planned period TP. The tentative operation plan data D1b is obtained, for example, by calculating the hydrogen production volume by each of the multiple hydrogen production devices 110A, 110B based on the hydrogen demand during the planned period TP, and then calculating the electric power EA, EB to be supplied to each of the multiple hydrogen production devices 110A, 110B from the hydrogen production volume, and is acquired by the acquisition unit 210.

[0049] [B-2] Creation of performance prediction data D2 Next, as shown in FIG. 2, the prediction unit 220 obtains performance prediction data D2 based on the performance data D1a and the tentative operation plan data D1b obtained by the acquisition unit 210.

[0050] FIG. 3B is a diagram illustrating an example of performance prediction data D2 in the embodiment.

[0051] 3B shows an example of performance prediction data D2 for the planning period TP from January 2022 to December 2024. In FIG. 3B, the upper part shows performance prediction data D2 obtained for one hydrogen production device 110A of the multiple hydrogen production devices 110A, 110B, with the horizontal axis representing time and the vertical axis representing the operating efficiency KA of the hydrogen production device 110A. In FIG. 3B, the lower part shows performance prediction data D2 obtained for the other hydrogen production device 110B of the multiple hydrogen production devices 110A, 110B, with the horizontal axis representing time and the vertical axis representing the operating efficiency KB of the hydrogen production device 110B.

[0052] As shown in FIG. 3B, the performance prediction data D2 is data predicted for a deterioration state in which the operation efficiency of each of the hydrogen production devices 110A, 110B deteriorates during the planning period TP.

[0053] The prediction unit 220 obtains performance prediction data D2 by predicting the operating efficiency of each of the multiple hydrogen production devices 110A, 110B during the planning period TP from the tentative operation plan data D1b, for example, using a performance prediction model created from the performance data D1a output to the acquisition unit 210. For example, in the tentative operation plan data D1b, when the cumulative operating time or continuous operating time of the multiple hydrogen production devices 110A, 110B is long and the load on the multiple hydrogen production devices 110A, 110B is large (the amount of power supply is large), the decrease in operating efficiency is predicted to be large.

[0054] [B-3] Creation of operation plan data D3 Next, as shown in FIG. 2, based on the performance prediction data D2 obtained by the prediction unit 220, the planning unit 230 creates an operation plan P by correcting (optimizing) the tentative operation plan corresponding to the tentative operation plan data D1b, thereby obtaining operation plan data D3.

[0055] In creating the operation plan P, the tentative operation plan is corrected so that the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP meets predetermined target values.

[0056] In the aforementioned Figure 3B, the target lower limit for the operating efficiency KA of the hydrogen production device 110A and the target lower limit for the operating efficiency KB of the hydrogen production device 110B are indicated by dashed lines. As shown in Figure 3B, the predicted value of the operating efficiency KB of the hydrogen production device 110B is equal to or greater than the target lower limit throughout the entire target period TP. However, while the predicted value of the operating efficiency KB of the hydrogen production device 110B is equal to or greater than the target lower limit in the early part of the target period TP (from the first week W1 of January 2022 to the second week W2 of December 2022), it is smaller than the target lower limit in the later part of the target period TP (from the third week W3 of December 2022 to the fifth week W5 of December 2024). Therefore, the tentative operation plan data D1b is corrected to obtain operation plan data D3 so that both the operating efficiency KA of the hydrogen production device 110A and the operating efficiency KB of the hydrogen production device 110B satisfy the target lower limit values ​​during the planning period TP.

[0057] FIG. 3C is a diagram illustrating an example of operation plan data D3 in the embodiment.

[0058] As shown in Figure 3C, the operation plan data D3 is created, for example, by changing the trends in the electric power EA, EB supplied to each of the multiple hydrogen production devices 110A, 110B for the time period in the latter part of the planning period TP in the provisional operation plan data D1b (see Figure 3A) (here, from the first week W1 of December 2022 to the fifth week W5 of December 2024).

[0059] FIG. 3D is a diagram illustrating an example of a transition of operation efficiency in the operation plan data D3 in the embodiment.

[0060] 3D, the operation plan data D3 is corrected so that both the operating efficiency KA of the hydrogen production device 110A and the operating efficiency KB of the hydrogen production device 110B are equal to or greater than the target lower limit (dashed line) throughout the entire planning period TP. For example, the operating efficiencies are set to equal to or greater than the target lower limit by changing the accumulated operating time or continuous operating time in the tentative operation plan data D1b.

[0061] Then, based on the operation plan data D3, the control unit 240 controls the operations of the hydrogen production devices 110A, 110B, thereby producing hydrogen during the planning period TP.

[0062] [C] Summary As described above, the hydrogen system operation planning device 200 of this embodiment includes an acquisition unit 210, a prediction unit 220, and a planning unit 230, and is configured to create an operation plan for operating the hydrogen production devices 110A, 110B during a target planning period TP in a hydrogen system 100 equipped with the hydrogen production devices 110A, 110B. The acquisition unit 210 acquires performance data D1a relating to the performance of the hydrogen production devices 110A, 110B and tentative operation plan data D1b relating to a tentative operation plan tentatively created for the operation plan. The prediction unit 220 predicts the performance of the hydrogen production devices 110A, 110B during the target planning period TP based on the performance data D1a and tentative operation plan data D1b acquired by the acquisition unit 210, thereby obtaining performance prediction data D2. For example, the prediction unit 220 obtains the performance prediction data D2 by predicting a degradation state in which the operating efficiency of the hydrogen production devices 110A, 110B deteriorates. The planning unit 230 obtains an operation plan by correcting the tentative operation plan based on the performance prediction data D2 obtained by the prediction unit 220. Therefore, in this embodiment, hydrogen production can be performed while maintaining the performance of the multiple hydrogen production devices 110A, 110B at target values ​​during the planning period TP. Therefore, in this embodiment, efficient hydrogen production can be easily achieved in a hydrogen system equipped with multiple hydrogen production devices 110A, 110B.

[0063] In this embodiment, the tentative operation plan data D1b is data relating to a tentative operation plan created based on the results of predicting the hydrogen demand during the planning period TP. Therefore, in this embodiment, hydrogen production can be executed so as to correspond to the hydrogen demand during the planning period TP.

[0064] [D] Variation The above embodiment is an example, and various modifications can be adopted.

[0065] [D-1] Variation 1 In the above embodiment, the hydrogen production unit 110 is described as being configured to produce hydrogen using electricity supplied from an electric power system 10 (power grid) external to the hydrogen system 100 (see Figure 1), but this is not limited to this.

[0066] FIG. 4 is a block diagram that schematically shows the overall configuration including the hydrogen system 100 and the hydrogen system operation planning device 200 in the first modified example of the embodiment.

[0067] As shown in FIG. 4, the hydrogen system 100 may include a renewable energy power generation device 130, and multiple hydrogen production devices 110A, 110B may be configured to produce hydrogen using the electricity output from the renewable energy power generation device 130.

[0068] The renewable energy power generation device 130 is a device that generates and outputs electric power from renewable energy. The renewable energy power generation device 130 is, for example, a solar power generation device that is configured to receive sunlight and perform photoelectric conversion to generate electric power. Alternatively, the renewable energy power generation device 130 may be a wind power generation device, a biomass power generation device, or the like.

[0069] At this time, the tentative operation plan data D1b acquired by the acquisition unit 210 is preferably data related to a tentative operation plan created based on the prediction results of the power to be output by the renewable energy power generation device 130 during the planning period TP. The prediction of the power to be output by the renewable energy power generation device 130 during the planning period TP is performed using, for example, a prediction model created by learning the relationship between the season and the generated power.

[0070] FIG. 5 is a diagram showing an example of power generation prediction data D0 relating to the power output by the renewable energy power generation device 130 and power supply data D0b relating to the power supplied from the renewable energy power generation device 130 to the hydrogen system 100 in the first variant of the embodiment.

[0071] Fig. 5 shows an example of the power generation forecast data D0 and power supply data D0b when the planning period TP is from January 2022 to December 2024. In Fig. 5, the upper part is the power generation forecast data D0, the horizontal axis represents time, and the vertical axis represents the power EP1 (MW) output by the renewable energy power generation device 130. In Fig. 3A, the lower part is the power supply data D0b, the horizontal axis represents time, and the vertical axis represents the power EP2 (MW) supplied from the renewable energy power generation device 130 to the hydrogen system 100.

[0072] As shown in the upper part of Fig. 5, the electric power EP1 output by the renewable energy power generation plant 130 fluctuates during the planning period TP. For this reason, as shown in the lower part of Fig. 5, the electric power EP2 supplied from the renewable energy power generation plant 130 to the hydrogen system 100 is set to correspond to the electric power EP1 output by the renewable energy power generation plant 130. In other words, the electric power EP2 supplied from the renewable energy power generation plant 130 to the hydrogen system 100 is set to increase as the electric power EP1 output by the renewable energy power generation plant 130 increases.

[0073] 3A, the tentative operation plan data D1b is created based on the power supply data D0b. That is, the tentative operation plan is created so as to distribute the electric power EP2 to be supplied to the hydrogen system 100 to the multiple hydrogen production devices 110A, 110B. Thereafter, as in the above-described embodiment, the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP is predicted to obtain performance prediction data D2, and the tentative operation plan is then corrected based on the performance prediction data D2 to obtain an operation plan.

[0074] Therefore, in this modification, hydrogen can be produced by efficiently using the power output by the renewable energy power generation plant 130 during the planning period TP.

[0075] [D-2] Variation 2 In the above embodiment, the tentative operation plan data D1b may be data related to a tentative operation plan created to respond to demand response (DR: consumer response).

[0076] FIG. 6 is a diagram illustrating an example of performance prediction data D2 in the second modification of the embodiment.

[0077] 6, as in the case of FIG. 3B, shows an example of performance prediction data D2 when the planning period TP is from January 2022 to December 2024. FIG. 6 shows cases corresponding to an upward DR (upward arrow portion) and a downward DR (downward arrow portion) in the hydrogen production device 110A.

[0078] As shown in Figure 6, when the hydrogen production device 110A corresponds to an upward DR (upward arrow), the power supplied to the hydrogen production device 110A is increased. On the other hand, when the hydrogen production device 110A corresponds to a downward DR (downward arrow), the power supplied to the hydrogen production device 110A is decreased. Then, in time periods other than the time period when the amount of hydrogen produced by the hydrogen production device 110A is reduced to correspond to the downward DR (downward arrow), the power supplied to the hydrogen production device 110B is increased.

[0079] Then, as in the above-described embodiment, the prediction unit 220 obtains performance prediction data D2 by predicting the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP based on the tentative operation plan data D1b created as shown in Fig. 6. Then, the planning unit 230 obtains an operation plan by correcting the tentative operation plan based on the performance prediction data D2. Here, the planning unit 230 obtains the operation plan by correcting the demand response (consumer response) in the tentative operation plan so that the performance (e.g., operating efficiency) of the multiple hydrogen production devices 110A, 110B during the planning period TP maintains a target value.

[0080] Therefore, in this modification, it is possible to easily realize efficient hydrogen production in a hydrogen system in which a plurality of hydrogen production devices 110A, 110B are installed.

[0081] Note that there are multiple options for demand response (consumer response), and each of these options specifies the response time (responsiveness), minimum duration, etc. For this reason, when responding to demand response (consumer response) as in this modified example, it is preferable to consider the response time (responsiveness) and minimum duration, etc., as well as the operating efficiency, as the performance of the multiple hydrogen production devices 110A, 110B. Specifically, it is preferable that the prediction unit 220 predicts the response time (responsiveness) and minimum duration as the performance of the multiple hydrogen production devices 110A, 110B during the planning period TP, and the planner 230 corrects the tentative operation plan to create an operation plan so that the response time (responsiveness) and minimum duration during the planning period TP achieve the target values.

[0082] Furthermore, the planning unit 230 may be configured to select one of the multiple hydrogen production devices 110A, 110B to produce hydrogen in response to demand response, depending on the predicted results of the response time (responsiveness) and the minimum duration. Alternatively, the planning unit 230 may determine whether or not to respond to demand response, depending on the predicted results of the response time (responsiveness) and the minimum duration, and correct the tentative operation plan based on the result of this determination.

[0083] [D-3] Other variations The planning unit 230 may create an operation plan so that, of the multiple hydrogen production devices 110A, 110B, a hydrogen production device with a higher degree of performance degradation is used preferentially over a hydrogen production device with a lower degree of performance degradation. This prevents the multiple hydrogen production devices 110A, 110B from shutting down for maintenance at different times, making it possible to accurately create an operation plan that achieves efficient operation of the hydrogen system.

[0084] Furthermore, the planner 230 may be configured to correct the created operation plan P before the planning period TP, as necessary. For example, the planner 230 may correct the created operation plan P in accordance with a changed hydrogen demand, etc., after a preset time has elapsed since the creation of the operation plan P. Alternatively, the planner 230 may correct the created operation plan P when the difference between the predicted performance results and the actually measured performance results of the multiple hydrogen production devices 110A, 110B exceeds a preset threshold.

[0085] Even when a new hydrogen production device is added to the hydrogen system 100, the operation plan may be executed using the hydrogen system operation planning device 200, as in the above embodiment. In other words, even when the characteristics (operating time, etc.) differ between an already installed hydrogen production device and a newly installed hydrogen production device, the operation plan can be executed in the same way as in the above case.

[0086] In addition, in the above explanation, the "accumulated operating time" may be the accumulated value of the time during which hydrogen is produced, starting from the time when the hydrogen production unit 110 is newly installed in the hydrogen system 100, or it may be the accumulated value of the time during which hydrogen is produced, starting from the time when maintenance is performed on the hydrogen production unit 110.

[0087] <Other> Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0088] 10 Power system, 100 Hydrogen system, 110 Hydrogen production unit, 110A Hydrogen production device, 110B Hydrogen production device, 120 Hydrogen storage and supply unit, 120 Hydrogen storage device, 130 Renewable energy power generation device, 200 Hydrogen system operation planning device, 210 Acquisition unit, 220 Prediction unit, 230 Planning unit, 240 Control unit, 300 Hydrogen distribution network

Claims

1. 1. A hydrogen system operation planning device that creates an operation plan for operating a plurality of hydrogen production devices in a hydrogen system that produces hydrogen by receiving a supply of electric power, the operation plan comprising: an acquisition unit configured to acquire performance data relating to the performance of the plurality of hydrogen production devices and tentative operation plan data relating to a tentative operation plan tentatively created for the operation plan; a prediction unit configured to predict performance of the plurality of hydrogen production devices during the planning period based on the performance data and the tentative operation plan data acquired by the acquisition unit, thereby obtaining performance prediction data; a planning unit configured to obtain the operation plan by correcting the tentative operation plan based on the performance prediction data obtained by the prediction by the prediction unit; and and the performance data includes data on power supplied to the plurality of hydrogen production devices, data on hydrogen produced by the plurality of hydrogen production devices, and data on the states of the plurality of hydrogen production devices; the performance prediction data includes data predicted regarding deterioration states of the plurality of hydrogen production devices during the planning period; In the planning unit, the creation of the operation plan is executed by correcting a tentative operation plan so that performance of the plurality of hydrogen production devices during the planning period satisfies a predetermined target value. Hydrogen system operation planning device.

2. the prediction unit obtains the performance prediction data by predicting a deterioration state of the plurality of hydrogen production devices during the planning period. The hydrogen system operation planning device according to claim 1 .

3. The provisional operation plan data is data regarding the provisional operation plan created based on a prediction result of hydrogen demand during the planning period. The hydrogen system operation planning device according to claim 1 .

4. The hydrogen system comprises: A renewable energy power generation device that generates and outputs electricity from renewable energy Including, the plurality of hydrogen production devices are configured to produce hydrogen using the electric power output from the renewable energy power generation device, The tentative operation plan data is data regarding the tentative operation plan created based on a prediction result of power output by the renewable energy power generation device during the planning period. The hydrogen system operation planning device according to claim 1 .

5. The tentative operation plan data is data related to the tentative operation plan created to correspond to demand response. The hydrogen system operation planning device according to claim 1 .

6. a control unit configured to control the operation of the hydrogen system based on the acquired operation plan created by the planning unit; having The hydrogen system operation planning device according to any one of claims 1 to 5.

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