Cooperative operation planning system and cooperative operation planning method

Abstract

To allow for making adjustments with a power supply-demand destination system to enable exchange of power with the power supply-demand destination system.SOLUTION: A cooperative operation planning system 300 according to an embodiment comprises: a hydrogen production plant planning device 100 for drawing up an operation plan for a hydrogen production device 11 configured to produce hydrogen by receiving power from an in-plant bus 15 connected to a power supply-demand destination system 20 via a main bus 30; and a hydrogen production plant adjustment device 200 for making adjustments on conditions for exchange of power with the power supply-demand destination system 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] FIELD Embodiments of the present invention relate to a collaborative operational planning system and a collaborative operational planning method. [Background technology]

[0002] Hydrogen energy is gaining attention as a new clean energy source. Hydrogen is produced in a hydrogen production unit using electricity and water as inputs. The produced hydrogen is then loaded into a hydrogen transport unit by a hydrogen storage and supply unit and transported. The hydrogen transported by the hydrogen transport unit is then supplied to the demand destination by a hydrogen supply unit at the demand site. The supplied hydrogen is then used, for example, to generate electricity and heat in a hydrogen power generation unit.

[0003] To produce hydrogen at low cost, it is necessary to procure electricity, one of the raw materials for hydrogen production, at low cost. One possible method for this would be to use renewable energy power generation equipment and storage batteries, but if the hydrogen production company were to own these facilities, costs would increase.

[0004] For this reason, it is desirable that these power facilities be owned and operated by other companies. In the future, if the number of renewable energy power generation devices and storage batteries connected to the power grid increases, it is expected that there may be situations in which it is not possible to find a supplier (sales destination) for the output electricity from the renewable energy power generation devices and storage batteries at certain times of the day. Therefore, it is conceivable that electricity will be exchanged after consultation and coordination between the hydrogen production side and the renewable energy power generation devices and storage batteries.

[0005] However, because the hydrogen production side, renewable energy power generation equipment side, and storage battery side are all separate businesses, they operate using independent evaluation indicators, and when negotiating and mediating, a system is needed for each side to exchange information about their respective circumstances and make concessions to each other. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6233275 [Patent Document 2] Patent No. 6334177 Summary of the Invention [Problem to be solved by the invention]

[0007] If the renewable energy power generation equipment or storage battery, which is the partner of cooperation for the hydrogen production side, is operated using evaluation indices different from those of the hydrogen production side, the evaluation indices and objective functions of each side will not match, making it difficult for both sides to make plans.

[0008] In this regard, there have been known examples in which all equipment, including the hydrogen production side, renewable energy power generation equipment side, and storage battery side, is treated as an integrated unit, and a plan is derived for the entire system based on a single objective function.

[0009] In other words, when multiple operators with different objective functions use or mutually use equipment operated by other operators, one method would be to leave the arbitration to a higher-level device such as an aggregator.

[0010] However, this method has the following problems.

[0011] First, the higher-level device is a black box to the lower-level device operator, and the lower-level device operator may not be satisfied with the results.

[0012] Second, if there are a large number of lower-level devices, it is expected that the upper-level device will need a lot of communication and calculation time to aggregate information and perform overall optimization, which will pose a problem in terms of the time it takes to get results.

[0013] Third, considering all requests would be an enormous task for the upper-level equipment, so it may only consider certain types of requests (for example, providing adjustment power to the supply-demand balancing market) and may not consider other uses of the lower-level equipment (for example, charging and discharging storage batteries).Or, it may not be possible to consider such requests because the upper-level equipment does not have the functionality to do so.

[0014] Furthermore, even if a request for mediation is to be made to a higher-level device, it may be desirable to complete a certain degree of mediation between the businesses beforehand.

[0015] In light of the above situation, it is desirable for hydrogen production businesses to have technology that can be adjusted between systems with different objective functions.

[0016] An object of the present invention is to provide a cooperative operation planning system and a cooperative operation planning method that enable coordination with an electric power demand and supply system and exchange of electric power with the electric power demand and supply system. [Means for solving the problem]

[0017] In order to achieve the above-mentioned object, a cooperative operation planning system according to an embodiment of the present invention includes a hydrogen production plant planning device that formulates an operation plan for a hydrogen production device that produces hydrogen by receiving a supply of electric power from an in-plant bus that is connected to an electric power supply and demand destination system via a main bus, and a hydrogen storage and supply device that stores and supplies the hydrogen, and a hydrogen production plant adjustment device that adjusts conditions for the exchange of electric power with the electric power supply and demand destination system. the hydrogen production plant planning device sets an objective function and formulates the operation plan by optimizing calculations for state variables within the hydrogen production plant; the hydrogen production plant adjustment device accepts acceptance conditions presented by the electric power supply and demand destination system, instructs the hydrogen production plant planning device to create an operation plan modified based on the acceptance conditions, and presents a proposed modification of the acceptance conditions to the electric power supply and demand destination system as desired conditions based on the modified operation plan; the acceptance conditions include constraints in the operation plan and their importance; It is characterized by: [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a block diagram showing the configuration of a hydrogen production plant including a collaborative operation planning system according to a first embodiment, and an electric power supply and demand destination system related thereto. [Figure 2]1 is a block diagram showing a configuration of a hydrogen production plant planning device in a collaborative operation planning system according to a first embodiment. [Figure 3] FIG. 2 is a block diagram showing variables of a calculation model of the hydrogen production plant planning device in the collaborative operation planning system according to the first embodiment. [Figure 4] 1 is a block diagram showing a configuration of a hydrogen production plant adjustment device in a collaborative operation planning system according to a first embodiment. [Figure 5] FIG. 2 is a flowchart showing the steps of a coordinated operation planning method according to the first embodiment. [Figure 6] FIG. 3 is a flow chart of a first case showing the procedure of the coordinated operation planning method according to the first embodiment. [Figure 7] FIG. 10 is a flowchart of a second case illustrating the procedure of the coordinated operation planning method according to the first embodiment. [Figure 8] FIG. 10 is a flowchart of a third case showing the procedure of the coordinated operation planning method according to the first embodiment. [Figure 9] FIG. 10 is a block diagram showing the configuration of a hydrogen production plant adjustment device in a collaborative operation planning system according to a second embodiment. [Figure 10] 10 is a graph illustrating the operation of a prediction unit of the hydrogen production plant adjustment device in the collaborative operation planning system according to the second embodiment. [Figure 11] FIG. 11 is a block diagram showing information exchange between a cooperative operation planning system according to a third embodiment and a plurality of associated power demand and supply systems. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, a collaborative operational planning system and a collaborative operational planning method according to an embodiment of the present invention will be described with reference to the drawings. Hereinafter, identical or similar parts will be denoted by common reference numerals, and duplicated explanations will be omitted.

[0020] [First embodiment] FIG. 1 is a block diagram showing the configuration of a hydrogen production plant 10 including a collaborative operation planning system 300 according to the first embodiment, and an associated power demand and supply system 20. As shown in FIG.

[0021] The hydrogen production plant 10 and the power supply and demand destination system 20 are electrically connected via a main bus 30, allowing for the exchange of power between the hydrogen production plant 10 and the power supply and demand destination system 20. Here, the main bus 30 is, for example, a power system for business use. Note that the main bus 30 may be a bus line for an industrial facility or a private line.

[0022] The hydrogen production plant 10 includes a hydrogen production device 11, a hydrogen storage and supply device 12, a plant-side power receiving and transforming facility 13, an in-plant power supply device 14, an in-plant bus 15, a control device 16, and a collaborative operation planning system 300. Here, the collaborative operation planning system 300 includes a hydrogen production plant planning device 100 and a hydrogen production plant adjustment device 200.

[0023] The intra-plant bus 15 is connected to the main bus 30 via the plant-side power receiving and transforming equipment 13, and exchanges power with the main bus 30.

[0024] The hydrogen production device 11 is an element that produces hydrogen as a fuel substance using electric power. The hydrogen production device 11 produces hydrogen using electric power from an in-plant bus 15. The hydrogen production device 11 provides information such as the average electric power per unit time that it receives and the amount of hydrogen produced per unit time to the control device 16, but may also provide this information to the hydrogen production plant planning device 100. The hydrogen production device 11 also produces hydrogen based on a plan created by the hydrogen production plant planning device 100.

[0025] Here, the fuel substance is not limited to hydrogen. For example, it may be ammonia, methane, methanol, naphtha, gasoline, kerosene, jet fuel (SAF), diesel, heavy oil, ethanol, ethylene, LPG, carbon monoxide, etc. The ammonia may be obtained by converting hydrogen into ammonia after hydrogen production, storage, or transportation, or may be ammonia produced using a device that produces ammonia directly from electricity instead of a hydrogen production device. The following explanation will be given using hydrogen as an example.

[0026] The hydrogen storage and supply device 12 has a storage tank 12a and is an element that stores hydrogen and converts and supplies gaseous hydrogen to liquid hydrogen or gaseous hydrogen to compressed hydrogen. The hydrogen storage and supply device 12 stores hydrogen produced by the hydrogen production device 11 and supplies hydrogen to hydrogen consumers (not shown) via a hydrogen transport device (not shown). The hydrogen storage and supply device 12 provides information such as the amount of stored hydrogen and the amount supplied to the hydrogen transport device to the control device 16, and may also provide this information to the hydrogen production plant planning device 100. The hydrogen storage and supply device 12 stores hydrogen and supplies hydrogen to hydrogen consumers based on, for example, a hydrogen storage and supply plan created by the hydrogen production plant planning device 100.

[0027] Although not shown, the power required by the respective auxiliary devices of the hydrogen production device 11 and the hydrogen storage and supply device 12 is also supplied from the intra-plant bus 15 .

[0028] The in-plant power supply device 14 enclosed by a dashed line in Fig. 1 is, for example, a renewable energy power generation device such as a wind power generation device or a solar power generation device, or a storage battery, or a hydrogen power generation device such as a fuel cell or a hydrogen gas turbine. The in-plant power supply device 14 is connected to a main bus 30 and exchanges power with the main bus 30. The in-plant power supply device 14 provides information on the exchange of power to the control device 16, and may also provide this information to the hydrogen production plant planning device 100. Note that the hydrogen production plant 10 does not necessarily have to be equipped with the in-plant power supply device 14.

[0029] The control device 16 receives information about the state quantities of each device in the hydrogen production plant 10, namely the hydrogen production device 11, the hydrogen storage and supply device 12, and the in-plant power supply device 14, and outputs control signals to the hydrogen production device 11 and the in-plant power supply device 14. Note that, if necessary, a control signal may also be output to the hydrogen storage and supply device 12. The control device 16 also outputs necessary information to the hydrogen production plant planning device 100, and controls each device in the hydrogen production plant 10 based on the plan that has been planned by the hydrogen production plant planning device 100 and that has been determined to be executed.

[0030] The hydrogen production plant planning device 100 of the collaborative operation planning system 300 receives information on the state quantities of each device in the hydrogen production plant 10, namely the hydrogen production device 11, the hydrogen storage and supply device 12, and the in-plant power supply device 14, directly or indirectly through the control device 16, and performs optimization calculations for the state quantities of the hydrogen production device 11, the hydrogen storage and supply device 12, and the in-plant power supply device 14, using cost as an objective function, for example, to create a plan for the hydrogen production plant 10. Details of the hydrogen production plant planning device 100 will be described later with reference to FIG. 2.

[0031] The hydrogen production plant adjustment device 200 of the collaborative operation planning system 300 adjusts the conditions for the exchange of electric power with the electric power demand and supply system 20. Details of the hydrogen production plant adjustment device 200 will be described later with reference to FIG.

[0032] In the following, a business operator that has the hydrogen production plant 10 or that further has the in-plant power supply device 14 will be referred to as a hydrogen production business operator.

[0033] Next, the power demand and supply system 20 will be described. For the hydrogen production plant 10, the power demand and supply system 20 is the power supplier from which the hydrogen production plant 10 receives power via the main bus 30, and in some cases, the power supply system 20 is also the party to which the hydrogen production plant 10 supplies power, i.e., the power supply destination. Receiving a power supply, or supplying power in addition to this, will hereinafter be collectively referred to as power supply and demand.

[0034] The power demand and supply destination system 20 includes a power demand and supply device 21, a power receiving and transforming facility 22, a control device 23 that controls these devices, and a planning device 24 that creates a plan for the power demand and supply destination system 20.

[0035] The power supply and demand device 21 is connected to the main bus 30 via a power receiving and transforming facility 22. The power supply and demand device 21 is a general term for devices that are responsible for supplying and demanding power from the perspective of the hydrogen production plant 10, as will be exemplified below.

[0036] A first example of the power supply and demand device 21 is a power generation device. The power generation device may be a thermal power generation device for business or industry, a nuclear power generation device, a pumped storage power generation device, or a variety of renewable energy power generation devices.

[0037] A second example of the power supply and demand device 21 is a storage battery. There are cases where the hydrogen production plant 10 receives a supply of power from the discharge of a storage battery, i.e., the power supply and demand destination system 20 is positioned as a power source, and cases where the intra-plant power supply device 14 in the hydrogen production plant 10 supplies power to charge the storage battery of the power supply and demand destination system 20, i.e., the hydrogen production plant 10 is positioned as a power supply destination. Note that the power supply and demand device 21 may also be a pumped storage power generation system instead of a storage battery.

[0038] A third example of the power supply and demand device 21 is a hydrogen production facility. That is, the power demand and supply destination system 20 has a hydrogen production facility that receives power exclusively from the main bus 30. A contract between the power demand and supply destination system 20 and the business that owns the main bus 30 may include a condition that allows the power demand and supply destination system 20 to share a portion of the power supply that it is supposed to receive with other businesses. In such a case, the power demand and supply destination system 20 is positioned as a power supply source from the hydrogen production plant 10. Furthermore, from the perspective of the hydrogen production plant 10, the hydrogen production facility in the power demand and supply destination system 20 may be a power supply destination that supplies power from the hydrogen production plant 10 to the hydrogen production facility.

[0039] Furthermore, the power supply and demand device 21 is not limited to the above examples, and may be a combination of these examples or may have other forms as long as it is a device that is a target for power supply and demand from the perspective of the hydrogen production plant 10.

[0040] The business operator having the power demand and supply system 20 may be a power supply business operator with a power purchase agreement (PPA), a business operator with industrial power generation equipment, or a department in charge of such business within a national or local government. Alternatively, the business operator may be a business operator commissioned by a national or local government. Hereinafter, these are collectively referred to as the power demand and supply business operator.

[0041] The planning device 24 that creates a plan for the power demand and supply destination system 20 may be used in a variety of cases, including when determining only the normal operation of the power demand and supply destination system 20, when predicting the surrounding conditions and setting an operation plan for the power demand and supply destination system 20, or when predicting the surrounding conditions and even the future and optimizing the state of the devices that make up the power demand and supply destination system 20 according to the purpose. In this way, it is common for the power demand and supply destination system 20 to independently create its own operation plan or operating plan (hereinafter referred to as the operating plan), and devices that perform these operations will be collectively referred to as the planning device 24.

[0042] In any case, it is considered that the planning device 24 clearly defines the constraints and their importance in the operation plan of the power demand and supply destination system 20. Here, importance refers to the degree to which the constraints should be observed, such as whether the constraints should be observed absolutely, whether they should be observed as much as possible, or whether it is preferable to observe them. It is also considered that the power demand and supply destination business operator may determine further conditions when lending power to other businesses. Hereinafter, the constraints, importance, and further conditions will be collectively referred to as condition information.

[0043] FIG. 2 is a block diagram showing the configuration of the hydrogen production plant planning device 100 in the collaborative operation planning system 300 according to the first embodiment.

[0044] The hydrogen production plant planning device 100 of the collaborative operation planning system 300 has an input unit 110, a storage unit 120, a calculation unit 130, and an output unit 140. The hydrogen production plant planning device 100 is, for example, a computer system. Alternatively, it may be configured by individual devices.

[0045] The input unit 110 receives information on the status of each device in the hydrogen production plant 10, namely the hydrogen production device 11, the hydrogen storage and supply device 12, and the in-plant power supply device 14, directly from each device and / or via the control device 16. The input unit 110 also receives, as external inputs, information on constraint conditions, such as the constraint conditions and objective function for the optimization calculation in the calculation unit 130, and information on calculation data, such as constants in the calculation formula for the optimization calculation. The input unit 110 also receives information and commands, including changes to the constraint conditions or objective function, from the hydrogen production plant adjustment device 200.

[0046] The storage unit 120 includes a constraint condition storage unit 121 , a calculation data storage unit 122 , a performance value storage unit 123 , a plan value storage unit 124 , and a calculation result storage unit 125 .

[0047] The constraint condition etc. storage unit 121 stores information on constraint conditions for optimization calculations received by the input unit 110, constraint conditions such as objective functions, etc.

[0048] The calculation data storage unit 122 stores calculation data such as constants in the calculation formula accepted by the input unit 110 .

[0049] The actual value storage unit 123 stores, as actual values, information relating to the status of each device in the hydrogen production plant 10, namely, the hydrogen production device 11, the hydrogen storage and supply device 12, and the in-plant power supply device 14. The data stored as actual values ​​may be transferred in batches to another storage device (not shown).

[0050] The planned value storage unit 124 stores the plan made by the hydrogen production plant planning apparatus 100.

[0051] The calculation result storage unit 125 stores the calculation results from the calculation unit 130 as needed.

[0052] The calculation unit 130 includes a mathematical model creation unit 131 and a mathematical optimization calculation unit 132. The calculation unit 130 also performs calculations based on information and commands received by the input unit 110 from the hydrogen production plant adjustment device 200.

[0053] The mathematical model creation unit 131 simulates the hydrogen production plant 10 mathematically using constraint conditions for optimization calculations, constraint conditions related to the objective function, and state variables indicating the state of each device in the hydrogen production plant 10, namely the hydrogen production device 11, the hydrogen storage and supply device 12, and the in-plant power supply device 14. Examples of state variables include the following:

[0054] For storage batteries, these include, for example, SOC (State of Charge), SOP (State of Power), SOH (State of Health), deterioration, and the number of units in operation. For hydrogen systems, these include, for example, the state of the water electrolysis device, the amount of hydrogen remaining in the tank, deterioration of the water electrolysis device, and deterioration of the fuel cell. For renewable energy power plants such as solar power plants and wind power plants, these include the upper limit of the amount of power that can be generated and the number of units in operation. Furthermore, for substation equipment connected in series to the distribution line, these include on / off, and for wiring within the substation equipment, these include the current value.

[0055] The mathematical optimization calculation unit 132 performs mathematical optimization calculation based on the results formulated by the mathematical model creation unit 131. As an optimization method, mixed integer programming, nonlinear programming, metaheuristic methods (such as genetic algorithms), learning (support vector machines, logistic regression, random forests, neural networks, naive Bayes, principal component analysis, k-nearest neighbors, GAN (Generative Adversarial Networks), etc. may be used. An example of such a method will be described later with reference to FIG. 3.

[0056] The output unit 140 outputs the calculation results of the calculation unit 130 to the control device 16 and the hydrogen production plant adjustment device 200, and also displays the main information.

[0057] The input section 110 and the output section 140 may, for example, have an interactive interface.

[0058] The hydrogen production plant planning apparatus 100 may generate a plurality of operation plans, present the plurality of operation plans as candidates, and allow a human to decide which one to use.

[0059] 3 is a block diagram showing state variables of a computation model of the hydrogen production plant planning device 100 in the collaborative operation planning system 300 according to the first embodiment. The hydrogen production plant 10 has a hydrogen production device 11, a hydrogen storage and supply device 12, and a renewable energy power generation device as an in-plant power supply device 14, and the power supply and demand destination system 20 has a storage battery as a power supply and demand device 21. An example of creating an operation plan using mixed integer programming by the hydrogen production plant planning device 100 will be described below.

[0060] (state variables) The state variables to be optimized are shown below. X EC (t): 30-minute average power used for hydrogen production at time t (kW) X AUX (t): 30-minute average power used by auxiliary equipment at time t [kW] X PV (t): 30-minute average power output from the renewable energy power generation PCS at time t [kW] X BAT_DCG (t): 30-minute average power discharged from the storage battery at time t (kW) X BAT_CHG (t): 30-minute average power (kW) charged to the battery at time t X GR_SELL (t): 30-minute average power sold (reverse power flow) to the power grid at time t (kW) X GR_PCHS (t): 30-minute average power purchased from the power grid at time t (kW) Cost: Evaluation value [yen]

[0061] (constant name) The constants are shown below. C GR_PCHS (t): Unit price of electricity purchased from the power grid at time t (yen / kWh) C GR_SELL (t): Unit price of electricity sold to the power grid at time t (yen / kWh)

[0062] (constraint conditions) Among the constraint conditions, examples of constraint equations (1) and (2) are shown, which are formulas of the constraint conditions presented by the hydrogen production plant adjustment device 200 based on the condition information provided by the power supply and demand destination system 20. Here, the constraint condition is shown as an example in which the use of the storage battery as the power supply and demand device 21 is prohibited from the time 0:00 to 5:59 (corresponding to 0 to 11 when a day is divided into 48 frames (start time t = 0 to 47)). X BAT_DCG (t)=0,t=0,…,11 …(1) X BAT_CHG (t)=0,t=0,…,11 …(2)

[0063] (Objective function) For example, as shown in the following equation (3), the difference between the cost of purchasing power from the main bus side and the income from selling power to the main bus side may be used as the objective function Cost.

[0064]

number

[0065] Here, the power purchased from the main bus is the sum of each element as shown in the following equation (4). X GR_PCHS (t)=X BAT_CHG (t)-X BAT_DCG (t)+X EC (t)+X AUX (t)-X PV (t) …(4)

[0066] Alternatively, as the objective function Cost, the amount of electricity used (charging and discharging) from the storage battery under unusable conditions can be multiplied by a penalty coefficient, which is used to convert the amount into an amount that takes into account the importance of the constraint, as shown in the following equation (5), and treated as a penalty.Specifically, the amount used can be converted into an expense and added to the objective function Cost.

[0067]

number

[0068] (optimization) Mathematical optimization is performed on the objective function Cost, for example, to find the minimum Cost. The state variables found in this way become the solution.

[0069] FIG. 4 is a block diagram showing the configuration of the hydrogen production plant adjustment device 200 in the collaborative operation planning system 300 according to the first embodiment.

[0070] As described above, the hydrogen production plant adjustment device 200 adjusts the conditions for the exchange of electric power between the hydrogen production plant 10 and the electric power demand and supply system 20 .

[0071] For this purpose, the hydrogen production plant adjusting device 200 has an input unit 210, a memory unit 220, a calculation unit 230, and an output unit 240. The hydrogen production plant adjusting device 200 is, for example, a computer system. Alternatively, it may be configured as separate devices. When the hydrogen production plant planning device 100 and the hydrogen production plant adjusting device 200 are each computer systems, they may be part of a common computer system. Furthermore, the input unit 110 and the output unit 140 of the hydrogen production plant planning device 100, and part of the input unit 210 and the output unit 240 of the hydrogen production plant adjusting device 200 may be realized using a common system, for example, a human-machine interface.

[0072] As shown in Fig. 1, the hydrogen production plant adjustment device 200 exchanges information with the electric power supply and demand destination system 20. In Fig. 1, the element of the electric power supply and demand destination system 20 with which the hydrogen production plant adjustment device 200 exchanges information is the planning device 24, but the present invention is not limited to this and may be another element of the electric power supply and demand destination system 20. The following description will be given taking as an example a case where the element with which the hydrogen production plant adjustment device 200 exchanges information is the planning device 24.

[0073] The input unit 210 receives information from the hydrogen production plant planning device 100, information including condition information from the planning device 24 of the power demand and supply system 20, and other external inputs.

[0074] Here, the information from the hydrogen production plant planning device 100 includes some of the information stored in the memory unit 120 of the hydrogen production plant planning device 100, for example, information stored in the constraint condition memory unit 121, the planned value memory unit 124, and the calculation result memory unit 125.

[0075] The condition information from the planning device 24 of the power demand and supply system 20 includes condition information related to the use of the power supply and demand devices 21 of the power demand and supply system 20, i.e., information related to constraints, information related to importance, and further information. Here, as described above, importance refers to the importance of the constraints related to the use of the power demand and supply devices 21, in other words, the degree to which the constraints should be observed (degree of compliance with the constraints). That is, as shown in the above-described formula (4), it may be replaced with the degree of penalty or payment amount when the constraints are violated.

[0076] Other external inputs include a threshold value for determining success or failure in the calculation unit 230, a termination determination value for determining whether or not adjustment should be terminated, and parameter values ​​required for calculations when changing planning conditions.

[0077] The storage unit 220 includes a determination value storage unit 221 , a condition information storage unit 222 , a planning device calculation result storage unit 223 , a desired condition storage unit 224 , and an adjustment history storage unit 225 .

[0078] The judgment value storage unit 221 stores the judgment threshold value and the termination judgment value received by the input unit 210 .

[0079] The condition information storage unit 222 stores the condition information presented by the power demand and supply destination system 20 regarding the use of the power supply and demand apparatus 21 accepted by the input unit 210 .

[0080] The planning device calculation result storage unit 223 stores the calculation results of the hydrogen production plant planning device 100 .

[0081] The desired condition storage unit 224 stores the changed plan conditions derived by the plan condition change unit 232 .

[0082] The adjustment history storage unit 225 stores the history of adjustments made by the hydrogen production plant adjustment device 200 regarding the exchange of electric power between the hydrogen production plant 10 and the electric power demand and supply system 20 .

[0083] The calculation unit 230 has a success / failure determination unit 231, a plan condition modification unit 232, and an adjustment termination determination unit 233. The calculation unit 230 has the following configuration, and specifically, for example, is a device equipped with a calculation capability obtained through machine learning or the like. Furthermore, the thresholds and the like stored in the storage unit 220 may also be changed based on the results of machine learning.

[0084] The success / failure determination unit 231 compares the calculation results of the hydrogen production plant planning device 100 with the judgment threshold stored in the judgment value storage unit 221 to determine whether the calculation results of the hydrogen production plant planning device 100 are successful.

[0085] The planning condition modification unit 232 determines how to modify the conditions for calculation in the hydrogen production plant planning device 100, based on the information and importance information on the constraint conditions related to the use of the power supply and demand device 21 that are presented by the power supply and demand destination system 20 and stored in the condition information storage unit 222. In this case, possible options include using the information and importance information on the constraint conditions related to the use of the power supply and demand device 21 as is, relaxing the constraint conditions, i.e., removing some of the multiple constraint conditions or changing the judgment criteria such as thresholds in the constraint conditions to be more relaxed, or relaxing the importance, specifically changing (relaxing) the penalty coefficient of the objective function.

[0086] The selection of the change of the condition information by the plan condition modification unit 232 may be made by a human system that confirms and determines the selection result by the plan condition modification unit 232 based on machine learning, for example. Alternatively, the above options may be prioritized in advance, and the plan condition modification unit 232 may change the condition information based on the priority.

[0087] The adjustment termination determination unit 233 determines whether to terminate the adjustment of the power supply and reception between the hydrogen production plant 10 and the power demand and supply destination system 20. Possible grounds for the determination include when the number of adjustment exchanges reaches an upper limit, when the objective function is minimized and the degree of decrease in the objective function for each adjustment step is equal to or less than a minimum value, etc. Note that other grounds may also be used.

[0088] The output unit 240 outputs to the hydrogen production plant planning device 100 in the hydrogen production plant 10, the planning device 24 in the power demand and supply system 20, and a monitor / operator of the device.

[0089] The information output by the output unit 240 to the hydrogen production plant planning apparatus 100 includes the desired conditions stored in the desired condition storage unit 224 .

[0090] The information that the output unit 240 outputs to the planning device 24 of the power demand and supply destination system 20 includes the change conditions derived by the plan condition change unit 232 .

[0091] The information that the output unit 240 outputs and displays to the monitor / operator of the device is information stored in the memory unit 220 that is called up as needed, and also, specified items among the calculation results of the calculation unit 230 are displayed as needed.

[0092] The input section 210 and the output section 240 may have an interactive interface.

[0093] Fig. 5 is a flow diagram showing the steps of the cooperative operation planning method according to the first embodiment. The flow diagram shown in Fig. 5 shows the execution details of the hydrogen production plant planning device 100 and the hydrogen production plant adjustment device 200 in the cooperative operation planning system 300 on the hydrogen production plant 10 side, and the execution details on the power supply and demand destination system 20 side, in relation to the timing of the interactions between them.

[0094] First, in an initial state, an operation plan for the hydrogen production plant 10 is formulated in the hydrogen production plant planning device 100 in the collaborative operation planning system 300 on the side of the hydrogen production plant 10 (step S11).

[0095] Similarly, the planning device 24 of the electric power demand and supply system 20 also formulates an operation plan for the electric power demand and supply system 20 (step S21). In this case, the objective function for optimizing the operation plan of the electric power demand and supply system 20 may be the same as the objective function of the hydrogen production plant 10, but it is generally considered that the two are different.

[0096] In this situation, the hydrogen production plant adjustment device 200 in the collaborative operation planning system 300 requests the power demand and supply destination system 20 for power supply and demand (step S12).

[0097] In response to this power supply and demand request from the hydrogen production plant adjustment device 200, the power demand and supply destination system 20 presents information on the acceptance conditions (step S22). That is, the power demand and supply destination system 20 presents acceptance conditions stating that it will accept the power supply and demand if these conditions are met. This may be the exact content of the operation plan formulated in the power demand and supply destination system 20, or it may be a condition that takes into consideration the content of the power supply and demand request from the hydrogen production plant adjustment device 200.

[0098] Based on the information on the acceptance conditions presented by the power demand and supply system 20, the hydrogen production plant 10 changes the planning conditions and modifies the operation plan (step S13). Details of step S13 are as follows.

[0099] First, the plan condition changing unit 232 of the hydrogen production plant adjustment device 200 instructs the hydrogen production plant planning device 100 to create an operation plan using information on the acceptance conditions presented by the power demand and supply system 20 as changed plan conditions (step S13a).

[0100] The hydrogen production plant planning device 100 creates an operation plan based on the changed plan conditions presented by the hydrogen production plant adjustment device 200, and outputs the result to the hydrogen production plant adjustment device 200 (step S13b).

[0101] The success / failure determination unit 231 of the hydrogen production plant adjustment device 200 determines whether the operation plan satisfies the evaluation criteria based on the calculation results of the modified operation plan created by the hydrogen production plant planning device 100 and the calculated values ​​of the target function, etc. (step S13c).

[0102] In step S13c, if it is determined that the revised operation plan created by the hydrogen production plant planning device 100 does not satisfy the evaluation criteria (step S13c NO), the plan condition change unit 232 of the hydrogen production plant adjustment device 200 changes the plan conditions, sets the results as changed plan conditions, and instructs the hydrogen production plant planning device 100 to create an operation plan (step S13d).

[0103] Thereafter, steps S13d, S13b, and S13c are repeated until it is determined in step S13c that the operation plan satisfies the evaluation criteria.

[0104] On the other hand, if it is determined in step S13c that the operation plan satisfies the evaluation criteria (step S13c YES), the hydrogen production plant adjustment device 200 presents the conditions used at this time as the desired conditions to the power supply and demand system 20 (step S14).

[0105] The electric power demand and supply destination system 20 presents acceptance conditions for the desired conditions presented by the hydrogen production plant adjustment device 200 (step S23).

[0106] The success / failure determination unit 231 of the hydrogen production plant adjustment device 200 determines whether the compliance conditions presented by the power demand and supply system 20 are acceptable, that is, whether the adjustment is successful (step S15).

[0107] In step S15, if the success / failure determination unit 231 of the hydrogen production plant adjustment device 200 determines that the adjustment has been established (step S15 YES), the procedure for contracting regarding the supply and demand of electricity between the hydrogen production plant 10 and the electricity supply and demand destination system 20 begins (step S31). Note that the "contract" here refers to a contract regarding the scope agreed upon and established as a result of the adjustment, including the period, that is the subject of the adjustment.

[0108] In step S15, if the success / failure determination unit 231 of the hydrogen production plant adjustment device 200 does not determine that the adjustment has been established (step S15 NO), the adjustment termination determination unit 233 of the hydrogen production plant adjustment device 200 determines whether to continue the adjustment (step S16).

[0109] In step S16, if the adjustment termination determination unit 233 of the hydrogen production plant adjustment device 200 determines not to continue the adjustment (step S16 NO), the adjustment of power supply and demand between the hydrogen production plant 10 and the power supply and demand destination system 20 is terminated (step S32).

[0110] Although not explicitly shown in the flow diagram of FIG. 5, even in step S13 of changing the planning conditions and correcting the operation plan, if the success / failure determination unit 231 determines that there is no prospect of success even after repeated changes to the planning conditions and corrections to the operation plan, the adjustment in step S32 may be terminated.

[0111] In step S16, if the adjustment termination determination unit 233 of the hydrogen production plant adjustment device 200 determines that the adjustment should be continued (step S16 YES), the process returns to step S13 for changing the planning conditions and correcting the operation plan, and the steps in step S13 are executed.

[0112] Fig. 6 is a flow chart of a first case showing the procedure of the coordinated operation planning method according to the first embodiment. This flow chart omits the details of step 13 in Fig. 5 and is shown to facilitate comparison with the second flow chart shown in Fig. 7 and the third flow chart shown in Fig. 8.

[0113] 7 is a flow diagram of a second case showing the procedure of the cooperative operation planning method according to the first embodiment. The second case is a variation of the first case, and differs in that the hydrogen production plant adjustment device 200 requests the power supply and demand destination system 20 to present status information of the power supply and demand destination system 20 together with the power supply and demand request.

[0114] 7 shows a case where the status information of the power demand and supply destination system 20 is presented in response to a request for the presentation of status information. When the hydrogen production plant adjustment device 200 acquires the status information of the power demand and supply destination system 20, the possibility of further adjustment and negotiation arises.

[0115] For example, if it is found that the state of charge (SOC) of the storage battery in the power demand and supply system 20 is low, even if a request for charging power is submitted together with a low price as desired information, the power demand and supply system 20 may be forced to accept the low-cost charging. In this case, the hydrogen production plant 10 will benefit. Conversely, if it is found that the SOC of the storage battery in the power demand and supply system 20 is nearly fully charged, even if a request for power supply is submitted together with a low price as desired information, the power demand and supply system 20 may be forced to accept the low-cost discharging. In this case, the hydrogen production plant 10 will benefit.

[0116] 8 is a flow diagram of a third case showing the procedure of the coordinated operation planning method according to the first embodiment. The third case is a variation of the first case, in which the power supply and demand destination system 20 makes a proposal regarding power supply and demand to the hydrogen production plant 10.

[0117] In this case as well, after the proposal from the power demand and supply destination system 20, the hydrogen production plant adjustment device 200 can perform adjustment in the same manner as in the first embodiment.

[0118] As described above, even if the electricity supply and demand systems 20 operate under different objective functions, the hydrogen production plant adjustment device 200 itself can adjust the exchange of electricity between the hydrogen production plant 10 and the electricity supply and demand systems 20.

[0119] [Second embodiment] FIG. 9 is a block diagram showing the configuration of a hydrogen production plant adjustment device 200a in a collaborative operation planning system 300 according to the second embodiment.

[0120] This embodiment is a modification of the first embodiment, and the calculation unit 230a of the hydrogen production plant adjusting apparatus 200a further includes a prediction unit 234.

[0121] In this embodiment, the input unit 210a further accepts profitability information for evaluating and predicting long-term profitability.

[0122] The storage unit 220a further includes a profitability information storage unit 226. The profitability information storage unit 226 stores and stores this profitability information. The profitability information is information necessary for evaluating future profitability, and includes, for example, any or all of the following: management data on the operator of the hydrogen production plant 10 itself, information on the hydrogen market and the electricity market, environmental information, development information on each country, information on foreign exchange rates, and information on diplomatic relations. The profitability information may also include information related to the electricity supply and demand destination system 20.

[0123] The calculation unit 230a further includes a prediction unit 234. The prediction unit 234 predicts future profitability using the profitability information stored in the profitability information storage unit 226. It may also predict environmental characteristics. It also provides information on the progress of the long-term prediction as short-term information. The prediction unit 234 may use an autoregressive model, exponential smoothing, moving average method, autoregressive moving average model, least squares method, machine learning, or the like as a prediction method.

[0124] FIG. 10 is a graph illustrating the operation of the prediction unit 234 of the hydrogen production plant adjustment apparatus 200a in the collaborative operation planning system 300 according to the second embodiment.

[0125] In the example shown in Fig. 10, the short-term prediction results in a negative profitability at time T1. Furthermore, the long-term prediction results in a positive profitability at time T2. Here, profitability may be calculated not only as a result of calculating the value of the objective function for the hydrogen production plant 10 when cost and importance are added to the objective function, but also as a result of evaluating the electricity supply and demand destination system 20, or may include both.

[0126] In such a case, the success / failure determination unit 231 may determine that profitability is achieved if the objective function satisfies a threshold value in the long term, even if the profitability is not achieved in the short term. In this case, for example, a human system may be involved in the determination based on the long-term evaluation results.

[0127] If the electricity demand and supply system 20 has a power plant, and the prediction unit 234 predicts the power generation costs of that power plant, the predicted value can be used to present a low price, and if other businesses are likely to be forced to accept the low-cost power generation, the desired information and importance can be presented accordingly.

[0128] Furthermore, if the electricity supply and demand destination system 20 has a storage battery, the cost of charging and discharging the storage battery can be predicted, and the predicted value can be used to present a low price. If other businesses are forced to accept low-cost charging and discharging, the desired information and importance can be presented accordingly.

[0129] As described above, by performing long-term prediction, the range of coordination between the hydrogen production plant 10 and the power supply and demand system 20 can be further expanded.

[0130] [Third embodiment] FIG. 11 is a block diagram showing information exchange between a coordinated operation planning system 300 according to the third embodiment and a plurality of associated power demand and supply systems 20. As shown in FIG.

[0131] This embodiment is a modification of the first embodiment, and is a form in which the hydrogen production plant 10 is to be coordinated with a plurality of power supply and demand destination systems 20, i.e., in the example of Figure 11, coordination is performed with power supply and demand destination systems 20a, 20b, and 20c.

[0132] FIG. 11 shows an example in which the power supply and demand devices 21 of the power supply and demand destination systems 20a, 20b, and 20c are a storage battery 21a, a renewable energy power generation device 21b, and a hydrogen production device 21c, respectively.

[0133] In this case, the hydrogen production plant adjustment device 200 of the hydrogen production plant 10 will adjust the power demand and supply systems 20a, 20b, and 20c individually. In other words, it is necessary to ensure that the power demand and supply systems 20a, 20b, and 20c do not obtain information from each other.

[0134] For this reason, the information exchanged is in a star configuration, with the hydrogen production plant 10 and the power supply and demand destination system 20a, the hydrogen production plant 10 and the power supply and demand destination system 20b, and the hydrogen production plant 10 and the power supply and demand destination system 20c exchanging information individually. Here, the information exchanged refers to the information exchanged between the hydrogen production plant 10 and the power supply and demand destination system 20 in the first embodiment.

[0135] By exchanging each piece of information, adjustments can be made according to the contents of the first embodiment.

[0136] In this way, even if there are multiple adjustment targets, adjustments can be made individually.

[0137] [Other embodiments] Although the embodiments of the present invention have been described above, they are presented as examples and are not intended to limit the scope of the invention. Furthermore, features of each embodiment may be combined. Furthermore, the embodiments may be implemented in various other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. The embodiments and their modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the invention and its equivalents as set forth in the claims. [Explanation of symbols]

[0138] 10...hydrogen production plant, 11...hydrogen production device, 12...hydrogen storage and supply device, 12a...storage tank, 13...plant-side power receiving and transforming equipment, 14...in-plant power supply device, 15...in-plant busbar, 16...control device, 20, 20a, 20b, 20c...power supply and demand destination system, 21...power supply and demand device, 21a...storage battery, 21b...renewable energy power generation device, 21c...hydrogen production device, 22, 22a, 22b, 22c...power receiving and transforming equipment, 23, 23a, 23b, 23c...control device, 24, 24a, 24b, 24c...planning device, 30...main busbar, 100...hydrogen production plant planning device, 110...input unit, 120...memory unit 121...constraint condition storage unit, 122...calculation data storage unit, 123...actual value storage unit, 124...planned value storage unit, 125...calculation result storage unit, 130...calculation unit, 131...mathematical model creation unit, 132...mathematical optimization calculation unit, 140...output unit, 200...hydrogen production plant adjustment device, 210...input unit, 220...storage unit, 221...determination threshold storage unit, 222...condition information storage unit, 223...planning device calculation result storage unit, 224...desired condition storage unit, 225...adjustment history storage unit, 230...calculation unit, 231...success / failure determination unit, 232...planning condition change unit, 233...adjustment termination determination unit, 240...output unit, 300...cooperative operation planning system

Claims

1. a hydrogen production plant planning device that creates an operation plan for a hydrogen production device that produces hydrogen by receiving power from an in-plant bus that is connected to an electric power supply and demand destination system via a main bus; a hydrogen production plant adjusting device that adjusts conditions for receiving and sending electric power between the hydrogen production plant and the electric power supply and demand destination system; Equipped with the hydrogen production plant planning device sets an objective function and formulates the operation plan by optimizing a state variable in the hydrogen production plant; The hydrogen production plant adjustment device includes: Accept the acceptance conditions presented by the power supply and demand destination system, instructing the hydrogen production plant planning device to create a modified operation plan based on the compliance conditions; Present the conditions corresponding to the revised operation plan as desired conditions to the power demand and supply destination system; The compliance conditions include constraints in the operation plan and their importance. A collaborative operational planning system characterized by:

2. 2. The cooperative operation planning system according to claim 1, wherein the power demand and supply system is at least one of a power generation facility and a power demand facility.

3. further comprising an in-plant power supply device connected to the in-plant bus; the hydrogen production plant planning device formulates an operation plan including the in-plant power supply device. The collaborative operational planning system according to claim 1 .

4. The collaborative operation planning system according to claim 3 , wherein the in-plant power supply device includes at least one of a renewable energy power generation device, a storage battery, and a hydrogen power generation device.

5. 2. The cooperative operation planning system according to claim 1, wherein the compliance conditions are constraints on power exchange with the power demand / supply destination system and a degree of importance of compliance with the constraints.

6. The cooperative operation planning system according to claim 1 , wherein the hydrogen production plant planning device includes a prediction unit that predicts future profitability or environmental friendliness.

7. a proposal step in which the collaborative operation planning system of the hydrogen production plant submits an electric power supply and demand request to the electric power supply and demand destination system based on the operation plan; a modification step in which the collaborative operation planning system receives acceptance conditions presented by the power supply and demand destination systems in response to the power supply and demand request and creates a modified operation plan; a step in which the collaborative operation planning system of the hydrogen production plant presents desired conditions to the power supply and demand destination system based on a result of the correction step, The compliance conditions include constraints in the operation plan and their importance. A method for planning collaborative operations.

8. 8. The cooperative operation planning method according to claim 7, wherein the compliance conditions are constraints on power exchange with the power demand / supply destination system and a degree of importance of compliance with the constraints.

9. The correction step is performed in the collaborative operation planning system of the hydrogen production plant by: an instruction step in which the hydrogen production plant adjustment device instructs the hydrogen production plant planning device to create a modified operation plan based on the compliance conditions; a planning step in which the hydrogen production plant planning device creates the modified operation plan based on the compliance conditions; a determination step in which the hydrogen production plant adjustment device determines whether or not a result of the corrected operation plan satisfies a determination condition based on a determination threshold value in the hydrogen production plant; a condition change step in which, when it is determined in the determination step that the determination condition is not satisfied, the hydrogen production plant adjustment device sets a change condition; When it is determined that the determination condition is satisfied in the determination step, the hydrogen production plant adjustment device treats the change condition as a desired condition, The instruction step, the planning step, the determination step, and the condition change step are repeatedly performed. The method of claim 7, wherein the coordinated operations planning method is

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