Operation plan creation device for hydrogen production device and operation plan creation method for hydrogen production device

Abstract

To allow a hydrogen production device to establish an operational plan accounting for uncertain regulation capacity command values without using the actual results of past regulation capacity command values.SOLUTION: An operation plan creation device 1 for a hydrogen production device comprises: a production / storage planning unit 11 which formulates each operation plan of a hydrogen production device and a hydrogen storage device on the basis of each forecast information on a hydrogen demand and a storage volume and facility information on the hydrogen production device and the hydrogen storage device; a regulation capacity command range provisional determination unit 13 which provisionally determines a power consumption reference value and a maximum regulation capacity of the hydrogen production device which defines a fluctuation range of regulation capacity command values at the time of actual supply-demand operation on the basis of the facility information and each operation plan of the hydrogen production device and the hydrogen storage device; and a regulation capacity supply planning unit 14 which regulates each operation plan of the hydrogen production device and the hydrogen storage device on the basis of each operation plan of the hydrogen production device and the hydrogen storage device about a prescribed period, the power consumption reference value, and the maximum regulation capacity, and formulates and outputs a regulation capacity supply plan.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an operation plan creation device and an operation plan creation method for a hydrogen production device, which plan the operation of a hydrogen production device that produces hydrogen using electric power. [Background technology]

[0002] It is expected that a shift from fossil fuels to hydrogen will progress in order to achieve decarbonization. Hydrogen production methods can be broadly divided into two: fossil fuel reforming and water electrolysis. Of these, water electrolysis produces hydrogen by splitting water using electricity. Hydrogen produced by water electrolysis using renewable energy sources in particular emits less carbon dioxide, and is known as green hydrogen, which is expected to become more widespread in the future.

[0003] However, green hydrogen requires a large amount of electricity to produce, which makes its production cost high and reduces the profitability of hydrogen production companies.In addition to the hydrogen production industry, businesses that use equipment that consumes large amounts of electricity, such as food manufacturing, transportation equipment manufacturing, chemical industry, and metal product manufacturing, are also facing the issue of declining profitability due to rising electricity prices.

[0004] To solve this problem, there is a need to secure revenues other than product sales by providing supply and demand adjustment capacity (hereinafter referred to as "adjustment capacity") that takes into account the amount of power consumed by the production equipment of each production company, including hydrogen production companies.Adjustment capacity refers to the ability to balance power supply and demand by generating or saving electricity as needed, and manufacturers can earn revenues by trading adjustment capacity with electric power companies (general electricity transmission and distribution companies) through the supply and demand adjustment market. The following Patent Documents 1 to 3 disclose examples of the configuration and operation of a control device for a hydrogen system including a hydrogen production device that supports adjustment power supply.

[0005] The configuration described in Patent Document 1 includes a means for calculating a control command value so that the input power input to the hydrogen production device as received power during a preparation period before a supply and demand adjustment period in which a target value for received power is set in advance will match the target value at the start of the supply and demand adjustment period. The configuration described in Patent Document 2 adjusts the power consumption of multiple hydrogen production devices included in a hydrogen supply system based on commands to adjust the supply and demand of electricity in a commercial power grid, and is equipped with a means for calculating the adjustment margin for power consumption of the hydrogen production devices based on the demand, supply, and inventory levels.

[0006] The technology disclosed in Patent Document 2 is effective when the adjustment capability (adjustment capability command value) commanded by the electric power company is fixed, such as during actual supply and demand adjustment (hereinafter referred to as "actual supply and demand"). However, at the time of planning adjustment capability, such as the day before actual supply and demand, the adjustment capability command value is not fixed. This is because, during actual supply and demand, an adjustment capability command is issued between the adjustment capability agreed upon in market transactions on the previous day and zero, up to the maximum adjustment capability. Moreover, the adjustment capability command value may differ from hour to hour.

[0007] As mentioned above, when planning the supply of control reserve the day before based on a definite control reserve command value, the control reserve command value at the time of actual supply and demand may differ significantly from the planned value. In this case, problems such as not being able to satisfy the storage volume constraints (upper and lower limits) of the product storage device or an oversupply or shortage of product supply may occur.

[0008] To address the issue of such changing adjustment power command values, the configuration described in Patent Document 3 is equipped with a means for creating an adjustment power scenario based on the actual value of adjustment power, and creating an output plan for the hydrogen production plant by performing an optimization calculation of adjustment power for that scenario.

[0009] One or more of the above-mentioned control reserve scenarios are created as control reserve command values ​​with probabilities from a probability distribution based on actual data on past control reserve command values, and the total probability of each scenario is 1 (100%). Then, by defining costs and other factors as objective functions and minimizing these, an optimal output plan is obtained as an expected value based on past situations. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] International Publication No. 2020 / 121436 [Patent Document 2] Japanese Patent Publication No. 2021-134863 [Patent Document 3] Japanese Patent Application Laid-Open No. 2024-8573 Summary of the Invention [Problem to be solved by the invention]

[0011] However, when there are no past actual values, such as when operating for the first time, or when a command value that has never occurred in the past is given, the deviation from the expected value becomes large. In such cases, problems such as not being able to satisfy the storage volume constraints (upper and lower limits) of the product storage device, or an oversupply or shortage of product supply, can still be considered. Furthermore, optimization calculations using large amounts of actual data can have problems such as the time it takes to obtain the planned value due to the large amount of calculation, or the inability to converge in the convergence calculation, making it impossible to find the optimal solution. Cited documents 1 to 3 do not mention these problems.

[0012] In light of the above situation, an object of the present invention is to develop an operation plan for a large power consuming device such as a hydrogen production device, taking into account uncertain adjustment capability command values, without using past performance data of adjustment capability command values. [Means for solving the problem]

[0013] In order to solve the above problems, one embodiment of the present invention provides an operation plan creation device for a hydrogen production device that creates an operation plan for a hydrogen production device that produces hydrogen using electric power. The operation plan creation device for a hydrogen production device includes: an information input unit that inputs forecast information on hydrogen demand and storage volume, and equipment information on the hydrogen production device and storage device that stores hydrogen; a production / storage planning unit that creates operation plans for the hydrogen production device and storage device based on the information input to the information input unit; an adjustment capability command range provisional determination unit that provisionally determines a power consumption reference value and maximum adjustment capability for the hydrogen production device, which specify a fluctuation range of the adjustment capability command value during actual supply and demand, based on the equipment information and the operation plans for the hydrogen production device and storage device; and an adjustment capability supply planning unit that adjusts the operation plans for the hydrogen production device and storage device based on the operation plans, power consumption reference value, and maximum adjustment capability for a predetermined period, and creates and outputs an adjustment capability supply plan. [Effects of the Invention]

[0014] According to at least one aspect of the present invention, a regulation capability command range is tentatively determined based on the above-described facility information and the operation plans of the production equipment and storage equipment, and a regulation capability plan is formulated. Therefore, in one aspect of the present invention, an operation plan for a hydrogen production equipment can be formulated taking into account uncertain regulation capability command values ​​without using performance data of past regulation capability command values. Problems, configurations, and effects other than those described above will become apparent from the following description of the preferred embodiments of the invention. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a diagram showing a schematic configuration of an operation plan creation device for manufacturing equipment according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a diagram illustrating an example of the hardware configuration of a computer included in an operation plan creation device for manufacturing equipment. [Figure 3] 10A and 10B are diagrams illustrating examples of time-series data of production volume, power consumption, storage volume, and demand volume related to a production plan and a storage plan for a product. [Figure 4]10A and 10B are schematic diagrams relating to power consumption and adjustment capability for explaining the processing of a adjustment capability command range tentative determination unit. [Figure 5] FIG. 10 is a diagram showing an example of a production plan and a storage plan when a maximum downward adjustment power command (25 MW) is given during a supply and demand adjustment period. [Figure 6] 10 is a diagram illustrating an example of power consumption of a manufacturing device and an example of product storage amount of a storage device during a supply and demand adjustment period. FIG. [Figure 7] 10A and 10B are diagrams illustrating an example of a production plan and a storage plan (product storage amount deviates from the allowable range) when the downward adjustment power command during the supply and demand adjustment period is always zero. [Figure 8] 10A and 10B are diagrams illustrating an example of a production plan and a storage plan (product storage amount deviates from the allowable range) when the downward adjustment power command during the supply and demand adjustment period is always the maximum adjustment power. [Figure 9] FIG. 10 is a diagram showing an example of the power consumption P of the manufacturing equipment after the maximum adjustment power has been adjusted downward, and the product storage amount of the storage equipment after the adjustment. [Figure 10] 10A and 10B are diagrams illustrating examples of a production plan and a storage plan that eliminate deviations from the allowable range of product storage amounts when the downward adjustment power command during the supply and demand adjustment period is always zero. [Figure 11] This figure shows examples of production plans and storage plans that eliminate deviations from the allowable range of product storage volume when the downward adjustment power command during the supply and demand adjustment period is a constant maximum adjustment power command (adjusted downward from the initial value of 25 MW to 23 MW). [Figure 12] 4 is a flowchart showing an example of a processing procedure performed by the operation plan creation device for manufacturing equipment according to the first embodiment of the present invention. [Figure 13] FIG. 10 is a diagram showing a schematic configuration of an operation plan creation device for manufacturing equipment according to a second embodiment of the present invention. [Figure 14] FIG. 10 is a schematic diagram showing the relationship between the contracted adjustment capacity, the adjustment capacity command value received from the electric power company, and the power consumption of the manufacturing equipment when controlled according to the adjustment capacity command value during actual supply and demand. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, examples of modes for carrying out the present invention (hereinafter referred to as "embodiments") will be described with reference to the accompanying drawings. In this specification and the accompanying drawings, identical or similar components are denoted by the same reference numerals, and redundant explanations may be omitted or only explanations focusing on the differences may be given. The number of each component may be singular or plural unless otherwise specified.

[0017] First Embodiment First, an operation plan creation device for manufacturing equipment according to a first embodiment of the present invention will be described. FIG. 1 is a diagram showing a schematic configuration of an operation plan creation device for manufacturing equipment according to a first embodiment of the present invention.

[0018] The manufacturing equipment operation plan creation device 1 is a device that creates an operation plan for a manufacturing equipment (not shown). The manufacturing equipment operation plan creation device 1 includes a forecast demand amount 10a, a forecast storage amount 10b, facility information 10c, a production / storage planning unit 11, a production plan 12a, a storage plan 12b, a control capacity command range tentative determination unit 13, a control capacity supply planning unit 14, and a control capacity plan 15.

[0019] In this embodiment, hydrogen is used as the product, a hydrogen production device based on water electrolysis is used as the production device, and a hydrogen tank is used as the storage device for storing hydrogen, but the present invention is not necessarily limited to this.

[0020] The predicted demand 10a is a time-series predicted value of hydrogen demand (hydrogen shipping plan value) for the future period (for example, from midnight to 11:00 pm the next day) covered by the production plan 12a and the storage plan 12b.

[0021] The predicted storage amount 10b is a predicted value of the amount of hydrogen stored in the hydrogen storage device in the future period covered by the predicted demand amount 10a. The predicted storage amount may be a predicted value for the entire future period, but it may also be a predicted value of the storage amount just before the first time in the future (for example, midnight the next day) (11:00 p.m. on the same day).

[0022] The equipment information 10c is information relating to the specifications of the manufacturing equipment and storage equipment. Equipment information relating to the manufacturing equipment includes, for example, the upper output limit (kW), the lower output limit (kW), the product manufacturing efficiency (kg / kW), and the electricity price (yen / kWh). The upper and lower output limits correspond to the upper and lower power consumption limits. Equipment information relating to the storage equipment includes, for example, the upper and lower storage limits (kg).

[0023] The production / storage planning unit 11 has a function of formulating and outputting operation plans (production plan 12a and storage plan 12b) for the production equipment and storage equipment based on the forecast demand amount 10a, the forecast storage amount 10b, and the facility information 10c. The production amount and storage amount of the product are subject to the constraints shown in equations (1) to (4).

[0024] where t is time, V is production volume (kg), P is power consumption (kW), ε is product production efficiency (kg / kWh), S is storage volume (kg), D is demand volume (kg), P_LL is power consumption lower limit (kW), P_UL is power consumption upper limit (kW), S_LL is storage volume lower limit (kg), S_UL is storage volume upper limit (kg). The power consumption lower limit P_LL and power consumption lower limit P_UL are the lower and upper limits of power consumption that can vary depending on the specifications (characteristics) and operating status of the manufacturing equipment.

[0025]

number

number

number

number

[0026] In equation (2), t = 1, 2, .... S(0) is the predicted storage amount at t = 0 immediately before the first time in the future (t = 1), i.e., the initial value of the predicted storage amount, and can be obtained by referring to the predicted storage amount 10b. D(t) is the demand amount at time t, and can be obtained by referring to the predicted demand amount 10a. Examples of the production amount V, power consumption P, storage amount S, and demand amount D that satisfy equations (1) to (4) are shown in Figure 3, which will be described later. Furthermore, taking into consideration the electricity price C_P(t) (yen / kWh), the total electricity cost C_TP for a predetermined period, such as one week, is expressed by equation (5).

[0027]

number

[0028] The production / storage planning unit 11 must calculate the operation plan for the manufacturing equipment, i.e., the plan P(t) for the power consumption P of the manufacturing equipment, the plan V(t) for the production volume V, and the plan S(t) for the storage volume S of the storage equipment. Under the constraints of equations (1) to (4), there are multiple solutions and no unique solution can be determined. Here, by calculating P(t), V(t), and S(t) as optimal solutions that minimize the total power cost C_TP shown in equation (5) as an objective function, it is possible to determine the production plan 12a and storage plan 12b for a predetermined period.

[0029] The manufacturing plan 12a is an operation plan for the manufacturing equipment obtained by the manufacturing / storage planning unit 11 to minimize the total power cost under the manufacturing / storage constraints, i.e., a plan P(t) for the power consumption P and a plan V(t) for the production volume V.

[0030] The storage plan 12b is an operation plan for the storage device obtained by the production / storage planning unit 11 so as to minimize the total power cost under the production / storage constraints, that is, a plan S(t) regarding the product storage amount S.

[0031] The adjustment capability command range tentative determination unit 13 has a function of tentatively determining the fluctuation range of the adjustment capability command value at the time of actual supply and demand, based on the facility information 10c, the production plan 12a, and the storage plan 12b. The fluctuation range of the adjustment capability command value is defined by the power consumption reference value P_B(t) of the production equipment and the maximum adjustment capability ΔP_MAX, as shown in Fig. 3, which will be described later.

[0032] The adjustment force supply planning unit 14 adjusts the production plan 12a and the storage plan 12b using the production plan 12a and the storage plan 12b for a predetermined period output by the production / storage planning unit 11 and the fluctuation range of the adjustment force command value provisionally determined by the adjustment force command range provisional determination unit 13, and formulates the adjustment force plan 15. As an example, the production plan 12a and the storage plan 12b are adjusted so as to satisfy constraints regarding product storage.

[0033] The adjustment power plan 15 is a plan for supplying adjustment power from the manufacturing equipment operation plan creation device 1 to the supply and demand adjustment market, and includes the adjusted power consumption reference value P_B(t) and maximum adjustment power ΔP_MAX.

[0034] [Computer hardware configuration] Next, the hardware configuration of the computer included in the operation schedule creation device 1 for manufacturing equipment will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of a hardware configuration of a computer.

[0035] The calculator 20 is an example of hardware used as a computer. In the manufacturing equipment operation plan creation device 1 according to this embodiment, the calculator 20 (computer) executes a program to realize a manufacturing equipment operation plan creation method in which the blocks shown in FIG. 1 cooperate with each other.

[0036] The computer 20 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 22, and a RAM (Random Access Memory) 23, all connected to a system bus. The computer 20 further includes a display device 24, an input device 25, a non-volatile storage 26, and a network interface 27.

[0037] The CPU 21 reads out the program code of the software that realizes each function according to this embodiment from the ROM 22, loads it into the RAM 23, and executes it. Variables, parameters, etc. that are generated during the calculation processing of the CPU 21 are temporarily written to the RAM 23, and these variables, parameters, etc. are read out by the CPU 21 as appropriate. The CPU 21 executes the program code read out from the ROM 22, thereby realizing the function of each block in the operation plan creation device 1 for manufacturing equipment. However, another processor such as an MPU (Micro Processing Unit) may be used instead of the CPU 21.

[0038] The display device 24 is a monitor such as a liquid crystal display, and displays a GUI (Graphical User Interface) screen, the results of arithmetic processing by the CPU 21, etc. The input device 25 generates an input signal in response to a user's operation and outputs it to the CPU 21. The input device 25 may be, for example, a mouse, a keyboard, or a touch sensor, and the user can operate the input device 25 to input information and instructions. The display device 24 and the input device 25 may be integrated into a touch panel. Note that the input device 25 may be configured so that the user can use it as an information input unit to input the forecast demand 10a, the forecast storage amount 10b, the facility information 10c, etc.

[0039] The non-volatile storage 26 is an example of a recording medium, and is capable of storing data used by a program, data obtained by executing a program, and the like. The forecast demand 10a, forecast storage 10b, and facility information 10c described above are stored in the non-volatile storage 26. The non-volatile storage 26 may also store an operating system (OS) and programs executed by the CPU 21. Examples of the non-volatile storage 26 that may be used include a hard disk drive (HDD), a solid state drive (SSD), optical or magnetic disk media, and semiconductor memory cards. Cloud computing can also be used to store this information.

[0040] A communication device such as a network interface card (NIC) is used as the network interface 27. The network interface 27 is capable of transmitting and receiving various data to and from external devices via a communication network such as a LAN or a dedicated line. The network interface 27 is used to input the forecast demand amount 10a, the forecast storage amount 10b, the facility information 10c, and the like.

[0041] The hardware of the control system of the manufacturing device 113 and the storage device 114 shown in FIG.

[0042] [Adjustment power command range provisional determination unit] The processing of the adjustment capability command range tentative determination unit 13 will be described below with reference to FIG. 4 is a schematic diagram relating to power consumption and adjustment capability to explain the processing of the adjustment capability command range tentative determination unit 13. The horizontal axis in the diagram represents time, and the supply and demand adjustment target period is from time ts to time te. The vertical axis represents power consumption P of the manufacturing equipment, and P_UL and P_LL are the upper and lower power consumption limits, respectively, as described above.

[0043] Furthermore, P_B(t) and ΔP_MAX are physical quantities required when bidding in the adjustment capacity market, and are the reference power consumption value of the manufacturing equipment and the maximum adjustment capacity (contract value), respectively. For example, the contract value is determined the day before the supply and demand adjustment period is set. Furthermore, ΔP(t) is the adjustment capacity command value issued by the power company at time t, and fluctuates within the range from zero to ΔP_MAX. P_COM(t) is the power consumption when controlled according to the adjustment capacity command value ΔP(t), and is related to P_B(t) and ΔP(t) by the following equation:

[0044]

number

[0045] Since the fluctuation range of ΔP(t) is from zero to ΔP_MAX, the fluctuation range of P_COM(t) is from the minimum power consumption P_C (= P_B(t) - ΔP_MAX) to P_B(t). The minimum power consumption P_C is the minimum value of the power consumption of the manufacturing equipment taking into account the maximum adjustment power ΔP_MAX.

[0046] Here, as shown in the figure, when ΔP_MAX and ΔP(t) are in the direction of decreasing the power consumption P, they are called "downward DR" (demand response), and conversely, when they are in the direction of increasing the power consumption P, they are called "upward DR." In other words, when ΔP_MAX and ΔP(t) are positive values, it is a downward DR, and when ΔP(t) is negative values, it is an upward DR. In this case, P_COM(t) is the power consumption when controlled in accordance with a downward DR or upward DR command. Below, an example where ΔP_MAX and ΔP(t) are each positive values ​​(downward DR) will be described. The case of an upward DR (ΔP_MAX and ΔP(t) are each negative values) can be considered in the same way, so an example of an upward DR will not be described.

[0047] In the adjustment capability command range tentative determination unit 13, the power consumption reference value P_B(t) is a reference value for the supply and demand adjustment period (ts to te) in the power consumption plan P(t) of the manufacturing equipment calculated by the production / storage planning unit 11. This power consumption reference value P_B(t) can change depending on the time, but in this example, for simplicity of explanation, it is set to a constant value regardless of the time, as shown in FIG. 4. In this case, the maximum possible value of the maximum adjustment capability ΔP_MAX is (P_B(t) - P_LL). The adjustment capability command range tentative determination unit 13 tentatively determines this maximum value as the maximum adjustment capability ΔP_MAX and saves it in memory.

[0048] In this way, the adjustment power command range provisional determination unit 13 sets the power consumption standard value during the supply and demand adjustment period in the power consumption plan included in the operation plan of the manufacturing equipment, and sets the maximum adjustment power between the power consumption standard value and the power consumption lower limit or power consumption upper limit during the supply and demand adjustment period, and provisionally determines each value.

[0049] [Production and storage plans when the adjustment capacity command is always zero] Here, the processing of the adjustment capability command range tentative determination unit 13 will be described using specific examples in FIGS. FIG. 3 is a diagram showing an example of time-series data of production volume V, power consumption P, storage volume S, and demand volume D related to a product production plan and storage plan. In the diagram, the horizontal axis represents time, the vertical axis on the right represents power consumption, and the vertical axis on the left represents the product volume (production volume, demand volume, storage volume). This time-series data of production volume V and storage volume S is an example of a production plan and storage plan output by the production / storage planning unit 11. At this stage, the production plan and storage plan are tentative production plan and storage plan.

[0050] Here, the supply and demand adjustment period is assumed to be from 10:00 to 15:00. At this time, the power consumption reference value P_B(t) is P(t) for that period, which is a constant value of 40 MW in this example. In this example, the minimum power consumption P_C of the manufacturing equipment is 15 MW, and at this time, the maximum adjustment power ΔP_MAX is 25 MW. Furthermore, the fluctuation range of the adjustment power command value ΔP(t) is from zero to 25 MW. In this way, the adjustment power command range tentative determination unit 13 tentatively determines the power consumption reference value P_B(t) and maximum adjustment power ΔP_MAX required when bidding in the adjustment power market.

[0051] [Production plan and storage plan when the control capacity command is the maximum control capacity command] Here, the processing of the adjustment power supply planning unit 14 will be described using specific examples in FIG. 3 and FIGS. 5 to 10. Fig. 5 shows examples of production plans and storage plans when the maximum downward adjustment capability command (25 MW) is given during the supply and demand adjustment period. Specifically, examples of production plans and storage plans adjusted taking into account the adjustment capability command from 10:00 to 15:00 are shown. Looking at the power consumption P in Figures 3 and 5, in Figure 3 it is 40 MW during the supply and demand adjustment period (10:00-15:00), while in Figure 5 it is 15 MW during the same time period, a decrease of 25 MW. This assumes that the maximum adjustment capacity ΔP_MAX (25 MW) is commanded as the adjustment capacity. In addition, in order to make the total production volume (total power consumption) over 24 hours equal between Figures 3 and 5, power consumption in Figure 5 is increased in the time periods around 10:00 to 15:00 (for example, 6:00 to 9:00, 16:00 to 21:00) compared to Figure 3.

[0052] [Power consumption and product storage volume during the supply and demand adjustment period] FIG. 6 is a diagram showing an example of the power consumption P of the manufacturing equipment and the product storage amount S of the storage equipment during the supply and demand adjustment period. The upper part of Figure 6 is a schematic example of the power consumption P of the manufacturing equipment during the supply and demand adjustment period, and the lower part of Figure 6 is a schematic example of the product storage amount S of the storage equipment during the same period. 6, the power consumption reference value 50a is the power consumption reference value P_B(t). The minimum power consumption 50b is the minimum power consumption P_C(t), and its initial state is equal to the power consumption lower limit P_LL of the manufacturing equipment. The fluctuation range 50c of the adjustment capability command value is the fluctuation range of the adjustment capability command value ΔP(t).

[0053] In the upper part of FIG. 6, product storage amount 51a is the product storage amount S(t) when the adjustment capability command value ΔP(t) during the supply and demand adjustment period is always zero. Product storage amount 51b is the product storage amount S(t) when the adjustment capability command value ΔP(t) during the same period is always the maximum adjustment capability ΔP_MAX (25 MW). Product storage amount fluctuation range 51c is the fluctuation range of the product storage amount S(t) corresponding to the fluctuation range of the adjustment capability command value ΔP(t). Product storage amount time change rate 51d is the time change rate of product storage amount 51a, which corresponds to (V(t) - D(t)) when the adjustment capability command value ΔP(t) is always zero. Product storage amount time change rate 51e is the time change rate of product storage amount 51b, which corresponds to (V(t) - D(t)) when the adjustment capability command value ΔP(t) is always the maximum adjustment capability ΔP_MAX.

[0054] The product storage amount S of the storage device is constrained by a lower limit S_LL and an upper limit S_UL. In the example shown in the lower part of Figure 6, the product storage amounts 51a and 51b, or the product storage amount fluctuation range 51c, exceed the upper or lower limit of the storage amount, and this state is not permitted.

[0055] [Example of product storage volume exceeding the allowable range when the control command is always zero] FIG. 7 is a diagram showing an example of a production plan and a storage plan (product storage amount deviates from the allowable range) when the downward adjustment power command during the supply and demand adjustment period is always zero. In the example of Figure 7, the downward adjustment power command is always zero during the supply and demand adjustment period from 10:00 to 15:00, just like in Figure 3, but the downward adjustment power command is also zero during the previous period from 6:00 to 9:00.

[0056] As shown in the figure, the product storage amount S exceeds the storage amount upper limit S_UL between 12:00 and 15:00. In other words, the product storage amount S deviates from the allowable range. This corresponds to the product storage amount 51a shown in the lower part of FIG. 6.

[0057] [Example of product storage volume exceeding the allowable range when the control capacity command is always at maximum control capacity] FIG. 8 is a diagram showing an example of a production plan and a storage plan (product storage amount deviates from the allowable range) when the downward adjustment power command during the supply and demand adjustment period is always the maximum adjustment power. In the example of Figure 8, the downward adjustment power command for the supply and demand adjustment period from 10:00 to 15:00 is the maximum adjustment power (25 MW) at all times, just like in Figure 5, but the power consumption in the preceding period from 7:00 to 8:00 is smaller than in Figure 5. As shown in the figure, the product storage amount S continues to decrease during the supply and demand adjustment period, and falls below the storage amount lower limit S_LL between 3:00 PM and 5:00 PM. In other words, the product storage amount S deviates from the allowable range. This corresponds to the product storage amount 51b shown in the lower part of Figure 6.

[0058] Therefore, the adjustment capability supply planning unit 14 calculates the storage amount for each case, assuming a case where the adjustment capability command value is always zero and a case where the adjustment capability is always at the maximum adjustment capability, based on the provisionally determined power consumption reference value and maximum adjustment capability. When the storage amount deviates from the allowable range of the storage amount, the adjustment capability supply planning unit 14 adjusts the fluctuation range of the provisionally determined adjustment capability command value so as to eliminate the state in which the storage amount deviates from the allowable range of the storage amount.

[0059] [Method for adjusting product stock during the supply and demand adjustment period] The basic idea behind adjusting the product stock volume during the supply and demand adjustment period (example of a specified period) is to adjust the production volume of the product during the supply and demand adjustment period, or to adjust the product stock volume at the start of the supply and demand adjustment period. Based on this, the following two adjustment methods (1) and (2) can be considered. (1) Change the power consumption during the supply and demand adjustment period (2) Change the operation plan before the supply and demand adjustment period and adjust the product stockpile amount at the start of the supply and demand adjustment period. The above adjustment method (1) and adjustment method (2) may be combined to adjust the product storage amount.

[0060] The method for changing the power consumption during the supply and demand adjustment period in the above-mentioned adjustment method (1) can be further divided into two methods. The first is method (1)-1, which changes the power consumption reference value P_B(t) during the supply and demand adjustment period, and the second is method (1)-2, which changes the maximum adjustment power ΔP_MAX during the supply and demand adjustment period.

[0061] [First example of adjusting product stockpiles during the supply and demand adjustment period] Here, a first example of adjusting the product stock amount during the supply and demand adjustment period will be described with reference to Fig. 9. In this example, adjustment methods (1)-1 and (1)-2 are used.

[0062] (Power consumption and product storage volume during the supply and demand adjustment period after downward adjustment) Fig. 9 is a diagram showing an example of the power consumption P of a manufacturing device after the maximum adjustment power ΔP_MAX has been adjusted downward, and the product storage amount S of a storage device after the adjustment. The upper part of Fig. 9 shows an example of the power consumption P of a manufacturing device that has been adjusted downward, and the lower part of Fig. 9 shows an example of the product storage amount S of a storage device after the adjustment.

[0063] In Figure 9, items 70a to 70c and 71a to 71e are the same as items 50a to 50c and 51a to 51e in Figure 6. As shown in the figure, product storage amounts 71a and 71b during the supply and demand adjustment period (time ts to time te), or product storage amount fluctuation range 71c, do not exceed the upper and lower limits of the storage amount and therefore satisfy the constraints.

[0064] As a result of the reduction in power consumption reference value 70a from P_B, which was the pre-adjustment power consumption reference value 50a, to P_B', the time rate of change 71d of the upper limit product storage amount is smaller than the time rate of change 51d of the pre-adjustment product storage amount. In other words, the rate of increase of the upper limit product storage amount 71a is slower than that of the product storage amount 51a.

[0065] Furthermore, because maximum adjustment capability ΔP_MAX has decreased from (P_B-P_C) before the adjustment to (P_B'-P_C), time rate of change 71e of lower limit product storage amount is smaller than time rate of change 51e of product storage amount before the adjustment. In other words, the rate of decrease of lower limit product storage amount 71b is slower than that of product storage amount 51b. As a result of these adjustments, product stock amounts 71a and 71b or product stock amount fluctuation range 71c during the supply and demand adjustment period satisfy the product stock amount constraints.

[0066] Note that the maximum control capability ΔP_MAX provisionally determined by the control capability command range provisional determination unit 13 does not necessarily have to be adjusted downward. As long as the product storage amounts 71a and 71b or the product storage amount fluctuation range 71c resulting from the adjustment do not exceed the upper or lower limits of the storage amount and satisfy the constraints, either an upward or downward adjustment is acceptable. For example, by configuring the maximum control capability ΔP_MAX to be adjustable upward or downward within a range in which the product storage amount does not deviate from the allowable range of the storage amount, the maximum control capability can be adjusted freely within the allowable range, and therefore power consumption can be adjusted freely within the allowable range.

[0067] In this embodiment, the adjustment power supply planning unit 14 changes the power consumption reference value in a decreasing direction when the product storage amount exceeds the upper limit of the storage amount, and / or changes the maximum adjustment power in a decreasing direction in absolute value when the product storage amount exceeds the upper limit of the storage amount or falls below the lower limit.

[0068] Furthermore, when the product storage amount exceeds the upper limit and there is a margin up to the lower limit, the adjustment force supply planning unit 14 adjusts the operation plans of the manufacturing equipment and storage equipment so that the product storage amount at the start of the predetermined period decreases. This allows adjustments to shift the entire fluctuation range of the product storage amount downward on the graph. Furthermore, if the product storage volume falls below the lower limit and there is still room up to the upper limit, the operation plans for the manufacturing and storage equipment are adjusted so that the product storage volume at the start of the specified period increases, thereby shifting the entire range of fluctuations in product storage volume upward on the graph.

[0069] [Second example of adjusting product stockpiles during the supply and demand adjustment period] Next, a second example of adjusting the product storage amount during the supply and demand adjustment period will be described with reference to Fig. 10. In this example, adjustment method (2) is used.

[0070] (Example of production plan and storage plan when the downward adjustment force command is always zero) FIG. 10 is a diagram showing an example of a production plan and a storage plan that eliminates deviations from the allowable range of product storage amounts when the downward adjustment power command during the supply and demand adjustment period is always zero. In this example, the downward adjustment capability command is always zero during the supply and demand adjustment period from 10:00 to 15:00 (time ts to time te), just as in Figure 7, but the power consumption before that from 7:00 to 8:00 is smaller than in Figure 7. Therefore, the product storage amount S at the start of the supply and demand adjustment period (10:00) is small, and even though the downward adjustment capability command is always zero, the product storage amount S does not exceed the upper limit during the supply and demand adjustment period. As shown in the figure, the storage amount constraint is observed at all times.

[0071] [Third example of adjusting product stock during the supply and demand adjustment period] Next, a third example of adjusting the product stock amount during the supply and demand adjustment period will be described with reference to Fig. 11. In this example, adjustment method (1)-2 is used.

[0072] (Example of production plan and storage plan when the downward adjustment capacity command is always 23 MW) FIG. 11 is a diagram showing an example of a production plan and a storage plan when the downward adjustment power command during the supply and demand adjustment period is the maximum adjustment power at all times (downward adjustment from the initial value of 25 MW to 23 MW). In this example, as in Figure 8, the downward adjustment power command for the supply and demand adjustment period from 10:00 to 15:00 (time ts to time te) is the maximum adjustment power at all times (23 MW), and the power consumption before that is also the same as in Figure 8. The downward adjustment command for the supply and demand adjustment period is adjusted downward from 25 MW to 23 MW, so the power consumption P becomes 17 MW. As a result, the production volume V during the supply and demand adjustment period is suppressed, and the product storage volume S does not fall below the lower limit during the supply and demand adjustment period. As shown in the figure, the storage volume constraint is observed at all times.

[0073] As shown in the specific example, the adjustment power supply planning unit 14 adjusts the production plan 12a and the storage plan 12b for the above-mentioned specified period output by the production / storage planning unit 11, and the power consumption reference value P_B(t) and maximum adjustment power ΔP_MAX provisionally determined by the adjustment power command range provisional determination unit 13, to adjust the production plan 12a and the storage plan 12b so as to satisfy the constraints regarding product storage, and determines and outputs the adjustment power plan 15. The adjustment capacity plan 15 is the power consumption reference value P_B(t) and the maximum adjustment capacity ΔP_MAX adjusted by the adjustment capacity supply planning unit 14. These are pieces of information required when bidding in the supply and demand adjustment capacity market.

[0074] The operation plan creation device for manufacturing equipment according to the first embodiment of the present invention configured as described above tentatively determines an adjustment capability command range based on facility information and each operation plan, and adjusts the adjustment capability command range so as to satisfy the product storage constraints to create an adjustment capability plan. This makes it possible to create a plan that takes into account uncertain adjustment capability command values ​​without using performance data of past adjustment capability command values.

[0075] Next, the processing flow of the operation plan creation system 1 for manufacturing equipment according to this embodiment will be described with reference to FIG. FIG. 12 is a flowchart showing an example of a processing procedure performed by the operation plan creation device 1 for manufacturing equipment.

[0076] (Step S1) In the operation plan creation device 1 for manufacturing equipment, each piece of information, such as a forecast demand amount 10a, a forecast storage amount 10b, and facility information 10c, is input to a production / storage planning unit 11.

[0077] (Step S2) Next, the production / storage planning unit 11 outputs operation plans (production plan 12a and storage plan 12b) for the production equipment and storage equipment based on the input information. In this step S2, the production / storage planning unit 11 calculates a plan P(t) for power consumption P, a plan V(t) for production volume V, and a plan S(t) for storage volume S that minimize the total power cost for a predetermined period (for example, a period subject to supply and demand adjustment) as an objective function under the constraints of equations (1) to (4) related to the production volume and storage volume, and outputs these as the production plan 12a and the storage plan 12b.

[0078] (Step S3) Next, the adjustment capability command range provisional determination unit 13 provisionally determines the fluctuation range of the adjustment capability command value during actual supply and demand based on the facility information 10c, the production plan 12a, and the storage plan 12b. Then, the adjustment capability command range provisional determination unit 13 outputs provisionally determined values ​​of the power consumption reference value P_B(t) and the maximum adjustment capability ΔP_MAX that are required when bidding in the adjustment capability market.

[0079] (Step S4) Next, in the adjustment power supply planning unit 14, the production plan 12a and storage plan 12b obtained in step S2 and the power consumption reference value P_B(t) and maximum adjustment power ΔP_MAX tentatively determined in step S3 are used to adjust the production plan 12a and storage plan 12b so as to satisfy the constraints regarding product storage, and an adjustment power plan 15 is formulated.

[0080] (Step S5) Next, the adjustment capability supply planning unit 14 outputs the adjustment capability plan 15 formulated in step S4, that is, the power consumption reference value P_B(t) and the maximum adjustment capability ΔP_MAX. After step S5 is completed, this process ends.

[0081] As described above, the operation plan creation device for a hydrogen production device in this embodiment comprises an information input unit (network interface 27) that inputs forecast information on hydrogen demand and storage amounts, and equipment information on the hydrogen production device and the storage device that stores hydrogen; a production / storage planning unit that formulates operation plans for the hydrogen production device and the storage device based on the information input to the information input unit; an adjustment power command range provisional determination unit that provisionally determines the power consumption reference value and maximum adjustment power of the hydrogen production device, which specifies the range of fluctuation of the adjustment power command value during actual supply and demand, based on the equipment information and the operation plans of the hydrogen production device and the storage device; and an adjustment power supply planning unit that adjusts the operation plans of the hydrogen production device and the storage device based on the operation plans, power consumption reference value, and maximum adjustment power of the hydrogen production device and the storage device for a specified period (the period subject to supply and demand adjustment), and formulates and outputs a plan for adjustment power supply.

[0082] With the above-described configuration, the manufacturing equipment operation plan creation device of this embodiment tentatively determines an adjustment capacity command range based on equipment information (manufacturing equipment, storage equipment) and each operation plan, and adjusts the adjustment capacity command range to satisfy the product storage constraints, thereby formulating an adjustment capacity plan. Therefore, it becomes possible to formulate an operation plan for manufacturing equipment that takes into account uncertain adjustment capability command values, without using performance data of past adjustment capability command values. This makes it possible to reliably create a supply plan for adjustment power using manufacturing equipment that consumes a large amount of power, even when there are no past actual values ​​for adjustment power commands, such as when operating manufacturing equipment for the first time, or when an adjustment power command value that has not occurred in the past is given.

[0083] <Second embodiment> Next, an operation plan creation device for manufacturing equipment according to a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment, as in the first embodiment, hydrogen is used as a product and a hydrogen production device based on water electrolysis is used as a production device.

[0084] FIG. 13 is a diagram showing a schematic configuration of an operation plan creation device for manufacturing equipment according to this embodiment. In the operation plan creation device 1A for manufacturing equipment according to this embodiment, a demand forecasting unit 110, predicted adjustment power price information 111, and a control command unit 112 are added compared to the operation plan creation device 1 for manufacturing equipment (see FIG. 1). Among the units constituting the operation plan creation device 1A for manufacturing equipment, the demand forecasting unit 110, predicted adjustment power price information 111, and control command unit 112, which are added from the first embodiment, and the adjustment power supply planning unit 14, some of whose processing is changed from the first embodiment, will be described below. In addition, a manufacturing equipment 113 and a storage equipment 114 will be described. The other units are the same as those in the first embodiment, and therefore description thereof will be omitted.

[0085] The demand forecasting unit 110 generates a predicted demand 10a, which is a time-series predicted value, as prediction information regarding hydrogen demand (hydrogen shipping plan value) for a future period (for example, from midnight to 11:00 pm the following day). First, the demand forecasting unit 110 uses data on past demand results and information correlated therewith (for example, weather information, calendar information such as days of the week, etc.) to perform modeling (create a mathematical model) using statistical analysis, artificial intelligence, etc. Next, the correlation information for the future period to be predicted is input into the mathematical model to obtain a time-series predicted value.

[0086] The predicted adjustment capacity price information 111 is information about the price (yen / kWh) of adjustment capacity that is expected to be agreed in the supply and demand adjustment market in the target future period.

[0087] The adjustment margin supply planning unit 14 adjusts the production plan 12a and the storage plan 12b using the production plan 12a and the storage plan 12b for a predetermined period (e.g., a supply and demand adjustment target period) output by the production / storage planning unit 11, the power consumption reference value P_B(t) and the maximum adjustment margin ΔP_MAX provisionally determined by the adjustment margin command range provisional determination unit 13, and predicted adjustment margin price information 111, to formulate an adjustment margin plan 15. Furthermore, the adjustment margin supply planning unit 14 instructs the control command unit 112 to output a control command. If the predicted adjustment margin price is C_F(t), C_F(t) becomes income for the owner of the manufacturing equipment 113, and therefore the total power cost C_TP expressed by equation (5) is changed to equation (7).

[0088]

number

[0089] By finding P(t), V(t), and S(t) as optimal solutions that minimize the total power cost C_TP shown in equation (7) as an objective function, it is possible to determine a production plan 12a and a storage plan 12b for a specified period.

[0090] The control command unit 112 is a function that operates during actual supply and demand, and receives in advance the production plan 12a, the storage plan 12b, and the adjustment force plan 15 from the adjustment force supply planning unit 14. During actual supply and demand, the control command unit 112 receives an adjustment force command value from the electric power company. The control command unit 112 sends control commands to the manufacturing equipment 113 and the storage equipment 114 based on the adjustment force command value, the production plan 12a, the storage plan 12b, and the adjustment force plan 15. Communication between the control command unit 112 and the manufacturing equipment 113 and the storage equipment 114 is realized using a network interface 27 (see FIG. 2). Below, the processing of the control command unit 112 will be described with reference to FIG. 14.

[0091] FIG. 14 is a schematic diagram showing the relationship between the contracted adjustment capacity, the adjustment capacity command value received from the electric power company, and the power consumption of the manufacturing equipment 113 when controlled according to the adjustment capacity command value during actual supply and demand. In the figure, the maximum adjustment capability ΔP_MAX is the contracted adjustment capability amount. ΔP(t) is the adjustment capability command value received from the electric power company, and P_COM(t) is the power consumption of the manufacturing equipment 113 when controlled according to the adjustment capability command value ΔP(t). The control command unit 112 sequentially commands the adjustment power command value ΔP(t) or the power consumption P_COM(t) to the manufacturing equipment 113. When there are multiple manufacturing equipment 113 or storage equipment 114 to be controlled, the control command value can be distributed to each equipment.

[0092] The production equipment 113 is a hydrogen production equipment based on water electrolysis. As mentioned above, the product and production equipment are not necessarily limited to hydrogen production equipment, but may be various products in the food manufacturing industry, transportation equipment manufacturing industry, chemical industry, metal product manufacturing industry, etc., and various production equipment used therein that consumes a large amount of power.

[0093] The storage device 114 is a device that stores the product produced by the production device 113. If the production device 113 is a hydrogen production device, it is a device such as a hydrogen tank that stores the product, hydrogen. If the product is something other than hydrogen, the storage device may also be a warehouse managed by information technology. Also, if the product is something other than hydrogen, the storage amount in the storage device can be rephrased as inventory (number, weight).

[0094] In this embodiment, an example has been shown in which the operation plan creation device 1A for manufacturing equipment includes the demand forecasting unit 110 and the control command unit 112, but it is sufficient if it includes at least one of the demand forecasting unit 110 and the control command unit 112.

[0095] The operation plan creation device for manufacturing equipment according to the second embodiment of the present invention, configured as described above, tentatively determines an adjustment capacity command range based on equipment information and each operation plan, and adjusts the adjustment capacity command range using predicted adjustment capacity price information so as to satisfy product storage constraints, thereby formulating an adjustment capacity plan. Therefore, it becomes possible to formulate an operation plan for manufacturing equipment that takes into account uncertain adjustment capability command values ​​without using past adjustment capability command value performance data. In addition, during actual supply and demand, the manufacturing equipment operation plan creation device receives an adjustment power command value from the electric power company and sends control commands to the manufacturing equipment and storage equipment, thereby becoming able to supply adjustment power to the electric power company.

[0096] The present invention is not limited to the above-described embodiments, and various other modifications and applications are possible without departing from the spirit of the invention as set forth in the claims. For example, the above-described embodiments have been described in detail and specifically to clearly explain the present invention, and the present invention is not necessarily limited to those including all of the components described. Furthermore, it is also possible to add, replace, or delete other components to or from part of the configuration of each embodiment.

[0097] Furthermore, the above-described configurations, functions, processing units, etc. may be partially or entirely realized in hardware, for example, by designing them as integrated circuits, etc. As the hardware, a broad processor device such as an FPGA (Field Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit) may be used.

[0098] Furthermore, each component of the operation schedule creation device for manufacturing equipment according to the above-described embodiment may be implemented in any hardware as long as the respective hardware can transmit and receive information to each other via a network. Furthermore, the processing performed by a certain processing unit may be realized by a single piece of hardware, or may be realized by distributed processing using multiple pieces of hardware. [Explanation of symbols]

[0099] 1,1A...manufacturing equipment operation plan creation device, 10a...forecasted demand, 10b...forecasted storage amount, 10c...facility information, 11...production / storage planning unit, 12a...production plan, 12b...storage plan, 13...control capacity command range tentative determination unit, 14...control capacity supply planning unit, 15...control capacity plan, 20...computer, 21...CPU, 50a,70a...power consumption reference value, 50b,70b...minimum power consumption, 50c,70c...variation range of control capacity command value, 51a,71a...product storage amount when control capacity command value is always zero, 51b,71b...product storage amount when control capacity command value is always maximum control capacity, 51c,71c...variation range of product storage amount corresponding to the variation range of control capacity command value, 51d,71d...time change rate of product storage amount when control capacity command value is always zero, 51e, 71e...Time rate of change of product storage amount when adjustment power command value is always maximum adjustment power, 110...Demand forecasting unit, 111...Predicted adjustment power price information, 112...Control command unit, 113...Manufacturing equipment, 114...Storage equipment

Claims

1. An operation plan creation device for a hydrogen production device that creates an operation plan for a hydrogen production device that produces hydrogen using electric power, an information input unit for inputting predicted information on the demand and storage amount of hydrogen, and facility information on the hydrogen production device and the storage device that stores hydrogen; a production / storage planning unit that formulates operation plans for the hydrogen production device and the storage device based on the information input to the information input unit; an adjustment capability command range provisional determination unit that provisionally determines a power consumption reference value and a maximum adjustment capability of the hydrogen production device, which define a fluctuation range of an adjustment capability command value during actual supply and demand, based on the facility information and the operation plans of the hydrogen production device and the storage device; an adjustment power supply planning unit that adjusts the operation plans of the hydrogen production device and the storage device based on the operation plans of the hydrogen production device and the storage device for a predetermined period, the power consumption reference value, and the maximum adjustment power, and formulates and outputs an adjustment power supply plan; An operation plan creation device for a hydrogen production plant comprising:

2. The production / storage planning unit The operation cost including the total electricity cost for the predetermined period is set as an objective function, and an operation plan for each of the hydrogen production device and the storage device is formulated so that the objective function is minimized under the operation constraints of the hydrogen production device and the storage device. The operation plan creation device for a hydrogen production plant according to claim 1 .

3. The adjustment capability command range tentative determination unit The power consumption standard value is set during a supply and demand adjustment period in a power consumption plan included in an operation plan of the hydrogen production device, and the maximum adjustment power is set between the power consumption standard value and a power consumption lower limit or a power consumption upper limit during the supply and demand adjustment period, and each value is provisionally determined. The operation plan creation device for a hydrogen production plant according to claim 2.

4. The adjustment power supply planning unit Based on the provisionally determined power consumption reference value and the maximum adjustment capacity, the system calculates the hydrogen storage amount for each case, assuming that the adjustment capacity command value is always zero and that the adjustment capacity is always the maximum adjustment capacity, and when the hydrogen storage amount deviates from the allowable range of storage amount, adjusts the fluctuation range of the provisionally determined adjustment capacity command value so as to eliminate the state in which the hydrogen storage amount deviates from the allowable range of storage amount. The operation plan creation device for a hydrogen production plant according to any one of claims 1 to 3.

5. The adjustment power supply planning unit When the hydrogen storage amount exceeds an upper limit of the storage amount, the power consumption reference value is changed in a decreasing direction, and / or when the hydrogen storage amount exceeds an upper limit of the storage amount or falls below a lower limit, the absolute value of the maximum adjustment power is changed in a decreasing direction. The operation plan creation device for a hydrogen production plant according to claim 4.

6. The adjustment power supply planning unit If the hydrogen storage amount exceeds the upper limit of the storage amount and there is a margin up to the lower limit of the storage amount, adjusting the operation plans of the hydrogen production device and the storage device so that the hydrogen storage amount at the start of the specified period is reduced; When the hydrogen storage amount falls below the lower limit of the storage amount and there is a margin up to the upper limit of the storage amount, the operation plans of the hydrogen production device and the storage device are adjusted so that the hydrogen storage amount at the start of the predetermined period increases. The operation plan creation device for a hydrogen production plant according to claim 4.

7. When the calculated hydrogen storage amount does not deviate from the allowable range of storage amount, the adjustment power supply planning unit adjusts the maximum adjustment power upward or downward within a range in which the hydrogen storage amount does not deviate from the allowable range of storage amount. The operation plan creation device for a hydrogen production plant according to claim 4.

8. the information input unit inputs predicted adjustment power price information, which is a future adjustment power price expected in the supply and demand adjustment market; The adjustment power supply planning unit uses a total operating cost including the total electricity cost for the predetermined period and the income based on the predicted adjustment power price information as an objective function, and corrects the operation plans of the hydrogen production device and the storage device so as to minimize the objective function under the operation constraints of the hydrogen production device and the storage device. The operation plan creation device for a hydrogen production plant according to claim 1 .

9. 1. An operation plan creation method for a hydrogen production apparatus by an operation plan creation device that creates an operation plan for a hydrogen production apparatus that produces hydrogen using electric power, comprising: A process of inputting predicted information on the demand and storage amount of hydrogen, and facility information on the hydrogen production device and the storage device that stores hydrogen; A process of formulating operation plans for the hydrogen production device and the storage device based on the input information; a process of provisionally determining a fluctuation range of an adjustment capability command value during actual supply and demand, which is determined by the power consumption reference value of the hydrogen production device and the maximum adjustment capability, based on the facility information and the operation plans of the hydrogen production device and the storage device; a process of adjusting each operation plan based on each operation plan of the hydrogen production device and the storage device for a predetermined period, the power consumption reference value, and the maximum adjustment capacity, and also planning an adjustment capacity supply and outputting the plan as an adjustment capacity plan; A method for creating an operation plan for a hydrogen production device, including:

Images