Hydrogen transportation system management device

Abstract

A management device for a hydrogen transportation system that effectively utilizes surplus electricity from distributed energy sources is provided. [Solution] A management device for a hydrogen transportation system manages a hydrogen transportation system comprising: a hydrogen production device that produces hydrogen using surplus electricity from distributed energy sources; a main hydrogen pipeline that is installed on multiple transmission towers and transports the hydrogen produced by the hydrogen production device; and a hydrogen storage device that stores the hydrogen transported by the main hydrogen pipeline and transports the hydrogen to at least one demand area via a local hydrogen pipeline. The management device also comprises a hydrogen power generation amount detection unit that detects the amount of power generated by a hydrogen gas turbine that has received hydrogen transported by the hydrogen transportation system; and a carbon dioxide emission reduction calculation unit that calculates the carbon dioxide emissions that would be emitted if the power generation were performed by thermal power generation, using the sum of the amount of power generation detected by the hydrogen power generation amount detection unit and the amount of power generation based on the amount of hydrogen transported to the demand area.

Description

[Technical Field]

[0001] The present disclosure relates to a management device for a hydrogen transportation system. [Background technology]

[0002] Patent Document 1 discloses a power management device that can suppress power flow back from distributed energy sources to a grid. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-187285 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the reverse power flow from the distributed energy source is restricted, the power that could have been output from the distributed energy source will be wasted. For this reason, a system that can effectively utilize surplus power from the distributed energy source is desired.

[0005] The present disclosure has been made to solve the above-mentioned problems. An object of the present disclosure is to provide a management device for a hydrogen transportation system that can effectively utilize surplus power from distributed energy sources. [Means for solving the problem]

[0006] The management device for a hydrogen transportation system according to the present disclosure is a management device that manages a hydrogen transportation system comprising: a hydrogen production device that produces hydrogen using surplus electricity from distributed energy sources; a backbone hydrogen pipeline that is installed on a plurality of transmission towers and transports the hydrogen produced by the hydrogen production device; and a hydrogen storage device that stores the hydrogen transported by the backbone hydrogen pipeline and transports the hydrogen to at least one demand area via a local hydrogen pipeline. The management device also comprises a hydrogen power generation amount detection unit that detects the amount of power generated by a hydrogen gas turbine that has received hydrogen transported by the hydrogen transportation system; and a carbon dioxide emission reduction calculation unit that calculates, as a carbon dioxide emission reduction, the amount of carbon dioxide emissions that would be generated by thermal power generation, which is the sum of the amount of power generated detected by the hydrogen power generation amount detection unit and the amount of power generated based on the amount of hydrogen transported to the demand area. [Effects of the Invention]

[0007] According to the present disclosure, a management device for a hydrogen transportation system manages a hydrogen transportation system including a hydrogen production device that produces hydrogen using surplus electricity from a distributed energy source, a main hydrogen pipeline installed on multiple transmission towers and transporting hydrogen produced by the hydrogen production device, and a hydrogen storage device that stores the hydrogen transported by the main hydrogen pipeline and transports the hydrogen to at least one demand area via a local hydrogen pipeline, and the management device also includes a hydrogen power generation amount detection unit that detects the amount of electricity generated by a hydrogen gas turbine that receives hydrogen transported by the hydrogen transportation system, and a carbon dioxide emission reduction calculation unit that calculates the carbon dioxide emission reduction amount as the sum of the amount of electricity detected by the hydrogen power generation amount detection unit and the amount of electricity generated based on the amount of hydrogen transported to the demand area, assuming that the electricity was generated by thermal power generation. This allows for effective use of surplus electricity from the distributed energy source. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a configuration diagram of an energy system including a hydrogen transportation system according to a first embodiment. [Figure 2]FIG. 1 is a perspective view of a main part of a hydrogen transportation system according to a first embodiment. [Figure 3] 1 is a plan view of a main part of a hydrogen transportation system according to a first embodiment. [Figure 4] 1 is a block diagram illustrating an example of a method for managing an energy system including a hydrogen transportation system 3 in the first embodiment. [Figure 5] 1 is a hardware configuration diagram of a management device for an energy system including a hydrogen transportation system according to a first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The embodiments will be described with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals. Duplicate descriptions of these parts will be appropriately simplified or omitted.

[0010] Embodiment 1 FIG. 1 is a configuration diagram of an energy system including a hydrogen transportation system according to the first embodiment.

[0011] As shown in Figure 1, the energy system comprises an electric power grid 1, a distributed energy source 2, and a hydrogen transportation system 3. These are designed in an integrated manner to meet societal demands for stable supplies and efficient use of energy resources such as electricity and hydrogen, as well as the expanded introduction of renewable energy.

[0012] The power system 1 comprises a power generation facility 1A, a substation facility 1B, and a power transmission facility 1C. This creates a series of energy transmission infrastructures for stably supplying generated high-voltage electricity to each demand area. The power system 1 achieves both a stable supply of energy and efficient operation by linking a centralized power generation source with a regionally distributed supply network.

[0013] For example, the power generation equipment 1A is a thermal power generation turbine, a hydroelectric power generation turbine, etc. The power generation equipment 1A also includes a hydrogen gas turbine H. The power generation equipment 1A has the function of generating high-voltage electricity. In particular, the hydrogen gas turbine H is attracting attention as a new power generation method toward realizing a decarbonized society, and promotes the effective use of hydrogen energy.

[0014] The substation equipment 1B is installed at a location away from the power generation equipment 1A. The substation equipment 1B has the function of converting input high-voltage power into low-voltage power. The substation equipment 1B has the function of supplying low-voltage power to demand areas near the distributed energy source 2. The substation equipment 1B has the function of detecting surplus power from the distributed energy source 2. When surplus power from the distributed energy source 2 is detected, the substation equipment 1B has the function of supplying the surplus power to other devices without supplying it to the power transmission equipment 1C. In addition to voltage conversion, the substation equipment 1B also includes current control, protective relays, measuring devices, etc., and contributes to the stable operation of the power system 1.

[0015] The power transmission facility 1C includes a plurality of transmission towers 1D, a plurality of high-voltage transmission lines 1E, and an overhead ground wire 1F, which allows the high-voltage power generated by the power generation facility 1A to be efficiently and safely supplied to the substation facility 1B.

[0016] The multiple transmission towers 1D are installed at intervals between the power generation equipment 1A and the substation equipment 1B. The upstream sides of the multiple high-voltage transmission lines 1E are connected to the power generation equipment 1A. The downstream sides of the multiple high-voltage transmission lines 1E are connected to the substation equipment 1B. The central parts of the multiple high-voltage transmission lines 1E are arranged vertically side by side while being installed on the multiple transmission towers 1D. The multiple high-voltage transmission lines 1E have the function of receiving power from the power generation equipment 1A. The multiple high-voltage transmission lines 1E have the function of supplying high-voltage power to the substation equipment 1B. The overhead ground wire 1F is installed on top of the multiple transmission towers 1D above the multiple high-voltage transmission lines 1E. The overhead ground wire 1F has the function of protecting the multiple high-voltage transmission lines 1E from lightning strikes.

[0017] For example, the distributed energy source 2 is a solar power generation facility, a wind power generation facility, a small hydroelectric power generation facility, a biomass power generation facility, etc. The distributed energy source 2 is installed in a location relatively close to the substation equipment 1B. The distributed energy source 2 is connected directly or indirectly to the substation equipment 1B. The distributed energy source 2 has a function to generate electric power. The distributed energy source 2 has a function to supply the generated electric power to a nearby demand area. When the generated electric power is greater than the demand electric power of the nearby demand area, the distributed energy source 2 has a function to supply the surplus electric power obtained by subtracting the demand electric power from the generated electric power to the substation equipment 1B. The distributed energy source 2 may supply all of the generated electric power to the substation equipment 1B as surplus electric power.

[0018] The hydrogen transport system 3 comprises a hydrogen production unit 3A, a main hydrogen pipeline 3B, a hydrogen storage unit 3C, a main pressure regulator 3D, and a local pressure regulator 3E. These constitute the infrastructure for consistently carrying out hydrogen production, supply, storage, pressure regulation, and transportation to the final demand area. As a result, cooperation with renewable energy sources and a carbon-neutral society can be realized.

[0019] The hydrogen production device 3A is installed adjacent to the substation equipment 1B. The hydrogen production device 3A has a function of receiving surplus power from the distributed energy source 2 from the substation equipment 1B. The hydrogen production device 3A has a function of producing hydrogen using the surplus power from the distributed energy source 2. For example, the hydrogen production device 3A is a water electrolysis device. For example, the hydrogen production device 3A has a function of pressurizing the hydrogen to 0.8 MPa.

[0020] The upstream side of the main hydrogen pipeline 3B is connected to the hydrogen production device 3A. The downstream side of the main hydrogen pipeline 3B is connected to the hydrogen gas turbine H. The central part of the main hydrogen pipeline 3B is installed on multiple transmission towers 1D. The main hydrogen pipeline 3B has the function of transporting hydrogen produced by the hydrogen production device 3A to the hydrogen gas turbine H.

[0021] For example, the main hydrogen pipeline 3B is a 25A flexible tube made of SUS316L. The inner diameter of the flexible tube is 25.5 mm. The flexible tube can transport hydrogen at a pressure of less than 1 MPa. For example, if hydrogen at 0.8 MPa is stored in the 15 km main hydrogen pipeline 3B so that it does not fall under the category of high-pressure gas under Article 2 of the High-Pressure Gas Safety Act, the amount of hydrogen is {(25.5 / 1000) / 2}2 × 3.14 × 15000 × 8 = 61.3 Nm 2 This becomes:

[0022] The hydrogen storage device 3C is provided as part of the transmission tower 1D or adjacent to the transmission tower 1D. The hydrogen storage device 3C has the function of storing hydrogen transported through the main hydrogen pipeline 3B. The hydrogen storage device 3C has the function of transporting hydrogen to at least one demand area via the local hydrogen pipeline L.

[0023] For example, the storage space of the hydrogen storage device 3C is 50 m 3 When hydrogen at 0.8 MPa is stored in the hydrogen storage device 3C, the amount of hydrogen is 50 × 8 = 400 Nm 2 This becomes:

[0024] The main pressure regulator 3D is provided between the hydrogen storage device 3C and the main hydrogen pipeline 3B. For example, the main pressure regulator 3D is provided adjacent to the hydrogen storage device 3C.

[0025] For example, the main pressure regulator 3D has a function of making the pressure of hydrogen in the hydrogen storage device 3C higher than the pressure of hydrogen in the main hydrogen pipeline 3B. For example, the main pressure regulator 3D has a function of increasing the amount of hydrogen stored in the hydrogen storage device 3C by making the pressure of the hydrogen storage device 3C 0.8 MPa or higher (e.g., 10 MPa).

[0026] For example, when the pressure of hydrogen in the main hydrogen pipeline 3B decreases due to loss, the main pressure regulator 3D has the function of transporting hydrogen downstream (toward the hydrogen gas turbine H) by increasing the pressure of hydrogen in the main hydrogen pipeline 3B. For example, when the pressure of hydrogen that has been transported at 0.8 MPa decreases to 0.5 MPa, the main pressure regulator 3D has the function of transporting hydrogen downstream (toward the hydrogen gas turbine H) by increasing the pressure of hydrogen to 0.8 MPa.

[0027] For example, the main pressure regulator 3D has a function to reduce the pressure of hydrogen in the main hydrogen pipeline 3B when hydrogen stored in the hydrogen storage device 3C is transported downstream (to the hydrogen gas turbine H side) via the main hydrogen pipeline 3B. For example, if the pressure of hydrogen stored in the hydrogen storage device 3C is 10 MPa, the main pressure regulator 3D has a function to reduce the pressure of hydrogen in the main hydrogen pipeline 3B to 0.8 MPa.

[0028] The local pressure regulator 3E is installed between the hydrogen storage device 3C and the local hydrogen pipeline L. For example, the local pressure regulator 3E is installed adjacent to the hydrogen storage device 3C. For example, the local pressure regulator 3E has a function to reduce the pressure of hydrogen in the local hydrogen pipeline L when hydrogen stored in the hydrogen storage device 3C is transported via the local hydrogen pipeline L to a demand area where people live. For example, if the pressure of hydrogen stored in the hydrogen storage device 3C is 10 MPa, the local pressure regulator 3E has a function to reduce the pressure of hydrogen in the local hydrogen pipeline L to 0.8 MPa so as not to violate the High Pressure Gas Safety Act. Furthermore, the local pressure regulator 3E has a function to notify the outside world of the amount of hydrogen transported to the demand area.

[0029] Next, an example of the amount of hydrogen stored in the hydrogen transportation system 3 will be described. For example, the distance from the substation 1B to the power generation facility 1A is assumed to be 15 km. For example, 30 transmission towers 1D are installed at intervals of 500 m to 1 km. For example, one main hydrogen pipeline 3B and 10 hydrogen storage devices 3C are installed.

[0030] In this case, the hydrogen storage capacity of one main hydrogen pipeline 3B is 61.3 Nm 2 For 10 hydrogen storage devices 3C, the total storage capacity of the hydrogen storage devices 3C is 400 × 10 = 4000 Nm 2 Therefore, the amount of hydrogen stored in the hydrogen transport system 3 is 61.3 + 4000 = 4061.3 Nm 2 This storage capacity is equivalent to the storage capacity of two hydrogen trailers.

[0031] If the main hydrogen pipeline 3B is four pipelines under the conditions described in paragraph 0021, the total hydrogen storage capacity will be 61.3 x 4 + 400 x 10 = 4245 Nm 2 is.

[0032] Next, a method for installing the main hydrogen pipeline 3B will be described with reference to FIGS. Fig. 2 is a perspective view of a main part of the hydrogen transport system according to embodiment 1. Fig. 3 is a plan view of a main part of the hydrogen transport system according to embodiment 1.

[0033] 2 and 3, at least two messenger wire fixing pole stays 4 are arranged vertically side by side below a plurality of high-voltage transmission lines 1E. Each of the messenger wire fixing pole stays 4 is fixed to four locations on the transmission tower 1D.

[0034] The messenger wire fixing pole 5 is installed in the central space of the transmission tower 1D below the multiple high-voltage transmission lines 1E. The messenger wire fixing pole 5 is arranged with its longitudinal direction aligned vertically. The messenger wire fixing pole 5 does not necessarily have to be installed from the ground. The messenger wire fixing pole 5 is fixed to at least two messenger wire fixing pole stays 4.

[0035] The messenger wire 6 is fixed to the messenger wire fixing pole 5 at an appropriate position between at least two messenger wire fixing pole stays 4. The messenger wire 6 is passed through a space where it will never come into contact with any component parts of the transmission tower 1D.

[0036] The spiral hanger 7 is hung from the messenger wire 6. The spiral hanger 7 is passed through a space where it will never come into contact with any component parts of the transmission tower 1D.

[0037] The main hydrogen pipeline 3B is suspended along the inside of the spiral hanger 7. The main hydrogen pipeline 3B is passed through a space where it will never come into contact with any of the components of the transmission tower 1D. The position of the main hydrogen pipeline 3B in the height direction is set with due consideration given to the distance from the high-voltage transmission line 1E and the distance from objects on the ground.

[0038] The trunk hydrogen pipeline 3B is lowered toward the ground near the messenger wire fixing pole 5. Near the ground, the trunk hydrogen pipeline 3B is designed to supply hydrogen to the hydrogen storage device 3C, trunk pressure regulator 3D, local pressure regulator 3E, nearby demand areas, etc. The trunk hydrogen pipeline 3B is then erected again from near the ground. The trunk hydrogen pipeline 3B is suspended from a spiral hanger 7 passed through a messenger wire 6 and is then erected to the next transmission tower 1D.

[0039] There are several possible ways to add trunk hydrogen pipelines 3B depending on the demand for hydrogen. In the first method, multiple trunk hydrogen pipelines 3B are hung from a single spiral hanger 7. In the second method, the above-mentioned set of messenger wire 6, spiral hanger 7, and trunk hydrogen pipeline 3B is installed vertically side by side on the same messenger wire fixing pole 5.

[0040] Next, an example of a method for managing an energy system including the hydrogen transportation system 3 will be described with reference to FIG. FIG. 4 is a block diagram illustrating an example of a method for managing an energy system including the hydrogen transportation system 3 according to the first embodiment.

[0041] As shown in FIG. 4, the management device 8 includes a hydrogen amount information acquisition unit 8A, a hydrogen power generation amount detection unit 8B, a carbon dioxide emission reduction amount calculation unit 8C, and a notification unit 8D.

[0042] The hydrogen amount information acquisition unit 8A has a function to acquire information on the amount of hydrogen transported from the local pressure adjustment device 3E to the demand area. The hydrogen power generation amount detection unit 8B has a function to detect the amount of power generated by the hydrogen gas turbine H from a watt-hour meter or the like provided on the hydrogen gas turbine H. The carbon dioxide emission reduction calculation unit 8C has a function to calculate the carbon dioxide emissions amount based on the amount of power generated by the hydrogen gas turbine H, which is the amount of carbon dioxide emitted when it is assumed that power was generated by thermal power generation, which is the sum of the amount of power generated detected by the hydrogen power generation amount detection unit 8B and the amount of power generated based on the amount of hydrogen transported to the demand area. The notification unit 8D has a function to notify an external system of the carbon dioxide emission reduction amount calculated by the carbon dioxide emission reduction calculation unit 8C.

[0043] The carbon dioxide emission reduction calculation unit 8C also has a function of selecting the amount of carbon dioxide emission per unit power generation depending on the type of thermal power generation, such as coal-fired power generation, natural gas-fired power generation, oil-fired power generation, etc.

[0044] The carbon dioxide emission reduction calculation unit 8C also has a function of correcting the amount of carbon dioxide emission per unit of power generation based on the past operational performance data of the thermal power generation equipment. For example, the amount of carbon dioxide emission per unit of power generation is corrected in response to changes in the aging of the equipment and changes in the operating conditions.

[0045] According to the first embodiment described above, a hydrogen production device 3A and a main hydrogen pipeline 3B are provided. The hydrogen production device 3A produces hydrogen by using surplus electricity from the distributed energy source 2. The main hydrogen pipeline 3B is installed on multiple transmission towers 1D and transports hydrogen produced by the hydrogen production device 3A. This allows for effective use of surplus electricity from the distributed energy source 2. Furthermore, by using the transmission towers 1D, the cost of new pipelines can be reduced. As a result, a hydrogen infrastructure can be constructed at low cost. Furthermore, hydrogen can be transported via routes that do not have any residential areas nearby.

[0046] The surplus electricity generated in this case is renewable energy.

[0047] Furthermore, in this energy system, surplus power from the distributed energy source 2 is not supplied to the power transmission facility 1C, so congestion in the power system 1 can be alleviated.

[0048] The hydrogen production device 3A also receives surplus power from the substation 1B. Therefore, the surplus power from the distributed energy source 2 can be easily and effectively utilized by detecting the surplus power using the substation 1B and switching the supply destination of the surplus power.

[0049] Furthermore, the main hydrogen pipeline 3B transports hydrogen to the hydrogen gas turbine H. This allows a stable supply of hydrogen to the hydrogen gas turbine H. This also contributes to reducing carbon dioxide emissions.

[0050] Furthermore, the hydrogen storage device 3C stores hydrogen transported through the main hydrogen pipeline 3B, so that the hydrogen transport system 3 can store a larger amount of hydrogen.

[0051] Furthermore, the hydrogen storage device 3C is provided in a part of the transmission tower 1D or in a part adjacent to the transmission tower 1D, so that hydrogen can be stored in a place where there are no residential areas nearby.

[0052] Furthermore, the main pressure regulator 3D is provided between the hydrogen storage device 3C and the main pipeline, which allows for flexible response, such as storing more hydrogen in the hydrogen storage device 3C.

[0053] The hydrogen storage device 3C also transports hydrogen to at least one hydrogen demand device via a local hydrogen pipeline, so that hydrogen can be transported to devices other than the hydrogen gas turbine H.

[0054] The local pressure regulator 3E is provided between the hydrogen storage device 3C and the local hydrogen pipeline, which allows for flexible response to the amount of hydrogen demand in the demand area.

[0055] In preparation for future increases in hydrogen demand, if the high-pressure gas requirements of the High-Pressure Gas Safety Act (Article 2) are relaxed, the pressure resistance of the main hydrogen pipeline 3B can be increased to 2.6 MPa. For example, a 25A flexible tube with braids can transport hydrogen at 26 MPa.

[0056] In this case, the hydrogen storage capacity in one main hydrogen pipeline 3B is 61.3 × 2.6 / 0.8 = 199.2 Nm 2 The total storage capacity of the hydrogen storage device 3C is 50 x 26 = 1300 Nm 2 If there are four main hydrogen pipelines 3B, the hydrogen storage capacity of the hydrogen transport system 3 is 61.3×2.6 / 0.8×4+1300×10=13796Nm 2 This storage capacity is equivalent to the storage capacity of six hydrogen trailers.

[0057] In this way, this energy system will become a new infrastructure for efficiently producing, transporting, and storing hydrogen derived from renewable energy sources, and is a promising technology for realizing a hydrogen society in the future.

[0058] Hydrogen is also light and has small molecular size, which allows it to be transported in considerable quantities over long distances.

[0059] The scale of the hydrogen storage device 3C, main pressure regulator 3D, and local pressure regulator 3E may be set taking into consideration storage at high pressure, the amount of demand in the demand area, and the like.

[0060] Furthermore, hydrogen flows in both directions, from areas of high pressure to areas of low pressure, so hydrogen can be transported without requiring any special operations.

[0061] Furthermore, the management device 8 calculates the carbon dioxide emission reduction amount as the carbon dioxide emission amount when it is assumed that the sum of the amount of power generated by the hydrogen gas turbine H and the amount of power generated based on the amount of hydrogen transported to the demand area is generated by thermal power generation. Therefore, it is possible to grasp the amount of carbon dioxide emission reduction due to the introduction of the hydrogen gas turbine H.

[0062] Furthermore, the management device 8 calculates the amount of carbon dioxide emission reduction according to the amount of carbon dioxide emission per unit of power generation depending on the type of thermal power generation. This makes it possible to more accurately grasp the amount of carbon dioxide emission reduction due to the introduction of the hydrogen gas turbine H.

[0063] Furthermore, the management device 8 corrects the amount of carbon dioxide emissions per unit of power generation based on the past operational performance data of thermal power generation. This makes it possible to more accurately grasp the amount of carbon dioxide emissions reduction achieved by introducing the hydrogen gas turbine H.

[0064] Furthermore, the management device 8 notifies an external system of the calculated carbon dioxide emission reduction amount, which makes it possible to realize linkage with an environmental monitoring system, a company's ESG reporting system, a carbon credit management system, and the like.

[0065] In addition, the management device 8 may detect the amount of hydrogen flowing into the hydrogen gas turbine H from a flow meter installed in the main hydrogen pipeline 3B, calculate the amount of power generation based on this amount of inflow, and calculate the amount of carbon dioxide emissions that would be generated by thermal power generation as the amount of carbon dioxide emissions reduced by the hydrogen transportation system 3.

[0066] Next, an example of the management device 8 will be described with reference to FIG. FIG. 5 is a hardware configuration diagram of a management device for an energy system including a hydrogen transportation system according to the first embodiment.

[0067] Each function of the management device 8 may be realized by a processing circuit. For example, the processing circuit includes at least one processor 500a and at least one memory 500b. For example, the processing circuit includes at least one dedicated hardware 600.

[0068] When the processing circuit includes at least one processor 500a and at least one memory 500b, the functions of the management device 8 are implemented by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. At least one of the software and firmware is stored in the at least one memory 500b. The at least one processor 500a implements the functions of the management device 8 by reading and executing the program stored in the at least one memory 500b. The at least one processor 500a is also referred to as a central processing unit, processing device, arithmetic unit, microprocessor, microcomputer, or DSP. For example, the at least one memory 500b is a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, or EEPROM, a magnetic disk, or the like.

[0069] When the processing circuit includes at least one dedicated hardware 600, the processing circuit may be realized, for example, as a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. For example, each function of the management device 8 may be realized by a processing circuit. For example, each function of the management device 8 may be realized collectively by a processing circuit.

[0070] Some of the functions of the management device 8 may be implemented by dedicated hardware 600, and the remaining functions may be implemented by software or firmware. For example, the function of the hydrogen power generation output detection unit 8B may be implemented by a processing circuit as dedicated hardware 600, and functions other than the function of the path search unit 100 may be implemented by at least one processor 500a reading and executing programs stored in at least one memory 500b.

[0071] In this way, the processing circuitry realizes the functions of the management device 8 by using hardware 600, software, firmware, or a combination of these. [Explanation of symbols]

[0072] 1 power system, 1A power generation equipment, 1B substation equipment, 1C power transmission equipment, 1D transmission tower, 1E high voltage transmission line, 1F overhead ground wire, 2 distributed energy source, 3 hydrogen transportation system, 3A hydrogen production equipment, 3B main hydrogen pipeline, 3C hydrogen storage equipment, 3D main pressure regulator, 3E local pressure regulator, 4 messenger wire fixing pole stay, 5 messenger wire fixing pole, 6 messenger wire, 7 spiral hanger, 8 management device, 8A hydrogen amount information acquisition unit, 8B hydrogen power generation amount detection unit, 8C carbon dioxide emission reduction calculation unit, 8D notification unit, 500a processor, 500b memory, 600 hardware

Claims

1. a hydrogen production device that produces hydrogen using surplus electricity from a distributed energy source; a main hydrogen pipeline installed on a plurality of transmission towers and transporting hydrogen produced by the hydrogen production device; a hydrogen storage device that stores the hydrogen transported through the trunk hydrogen pipeline and transports the hydrogen to at least one demand area via a local hydrogen pipeline; A management device for managing a hydrogen transportation system comprising: a hydrogen power generation amount detection unit that detects the amount of power generated by a hydrogen gas turbine that has received hydrogen transported by the hydrogen transport system; a carbon dioxide emission reduction calculation unit that calculates, as a carbon dioxide emission reduction, the amount of carbon dioxide emitted when the sum of the amount of power generation detected by the hydrogen power generation amount detection unit and the amount of power generation based on the amount of hydrogen transported to the demand area is assumed to be generated by thermal power generation; and A management device for a hydrogen transportation system comprising:

2. 2. The management device for a hydrogen transportation system according to claim 1, wherein the carbon dioxide emission reduction calculation unit selects an amount of carbon dioxide emission per unit of power generation according to the type of thermal power generation, and calculates the amount of carbon dioxide emission reduction based on the selected amount of carbon dioxide emission per unit of power generation.

3. 2. The management device for a hydrogen transportation system according to claim 1, wherein the carbon dioxide emission reduction calculation unit corrects the amount of carbon dioxide emission per unit of power generation based on past operational performance data of the thermal power plant, and calculates the amount of carbon dioxide emission reduction based on the corrected amount of carbon dioxide emission per unit of power generation.

4. a notification unit that notifies an external system of the carbon dioxide emission reduction amount calculated by the carbon dioxide emission reduction amount calculation unit; The management device for a hydrogen transportation system according to claim 1 , comprising:

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