# US 11,909,212 B2 · Hydrogen-system control device and hydrogen-system controlling method

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- Number: US 11,909,212 B2
- Document ID: US11909212B2
- Status: Granted
- Kind: B2
- Application number: 17/345,891
- Filed: 2021-06-11
- Published: 2021-11-18
- Granted: 2024-02-20
- Earliest claimed: 2018-12-12
- Assignees: Toshiba Energy Systems & Solutions Corporation
- Applicants: Toshiba Energy Systems & Solutions Corporation
- Inventors: Shingo Tamaru; Takashi Akiba; Fumiyuki Yamane; Shin Kato
- Web page: https://patentgrep.com/patent/US11909212B2

## CPC

- G06Q 50/06: Energy or water supply
- H02J 3/28: Arrangements for balancing of the load in networks by storage of energy
- G05B 13/026: {using a predictor}
- H02J 3/17: Demand-responsive operation of AC power transmission or distribution networks
- H02J 3/381: {Dispersed generators}
- H02J 15/50: using stored hydrogen
- G06Q 10/06313: {Resource planning in a project environment}
- G06Q 10/06315: {Needs-based resource requirements planning or analysis}
- H02J 3/004: {Generation forecast, e.g. methods or systems for forecasting future energy generation}
- H02J 2101/20: Dispersed power generation using renewable energy sources
- Y02B 70/3225: Demand response systems, e.g. load shedding, peak shaving
- Y02E 60/36: Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
- Y02E 70/30: Systems combining energy storage with energy generation of non-fossil origin
- Y04S 20/222: Demand response systems, e.g. load shedding, peak shaving
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

A hydrogen-system control device according to the present embodiment is a hydrogen-system control device that controls a hydrogen system. The hydrogen-system control device includes an acquirer configured to acquire a predicted value of the first power for a time period for which an amount of the second power to be received has been set, and a controller configured to cause the hydrogen system to additionally produce hydrogen in an amount corresponding to a usage ratio of surplus power by which a supplied value of the first power exceeds the predicted value of the first power, wherein the controller sets the usage ratio for a first time period within a predetermined time period to a value larger than the usage ratio for a second time period that is after the first time period and within the predetermined time period.

## Claims

### Claim 1

A hydrogen-system control device that controls a hydrogen system that produces hydrogen using first power generated by a renewable energy system and second power supplied from a power grid, the device comprising:
an acquirer configured to acquire a predicted value of the first power for a time period for which an amount of the second power to be received has been set; and
a controller configured to cause the hydrogen system to additionally produce hydrogen in an amount corresponding to a usage ratio of surplus power by which a supplied value of the first power exceeds the predicted value of the first power, wherein
the controller is configured to set the usage ratio for a first time period within the time period to a value larger than the usage ratio for a second time period that is after the first time period and within the time period.

### Claim 2 (depends on 1)

The device of claim 1, wherein the controller is configured to set the usage ratio for the second time period to 0 or a fixed value.

### Claim 3 (depends on 1)

The device of claim 1, wherein the controller is configured to reduce the usage ratio as an integrated amount of the first power in the first time period increases.

### Claim 4 (depends on 1)

The device of claim 1, wherein the controller is configured to reduce the usage ratio in the first time period with passage of time.

### Claim 5 (depends on 1)

The device of claim 1, wherein the controller is configured to set, to 0 or a fixed value, the usage ratio after a time when an integrated amount of the first power in the time period reaches a threshold based on a probability distribution of a predicted amount of the first power to be integrated in the time period.

### Claim 6 (depends on 5)

The device of claim 5, wherein the controller is configured to increase the threshold with passage of time after the integrated amount of the first power in the time period reaches the threshold, and to cause the hydrogen system to additionally produce hydrogen in an amount corresponding to a value obtained by multiplying the usage ratio by the surplus power.

### Claim 7 (depends on 5)

The device of claim 5, wherein
the controller is configured to set a first threshold smaller than a predicted amount of the first power to be integrated in the time period, when an amount of the second power to be received is set, and
the controller is configured to set a second threshold larger than the predicted amount of the first power to be integrated in the time period, when the amount of the second power to be received is not set.

### Claim 8 (depends on 5)

The device of claim 5, wherein the controller changes the threshold based on an amount of change in a predicted electric energy to be generated by the renewable energy system.

### Claim 9 (depends on 1)

The device of claim 1, wherein the controller is configured not to change the usage ratio until an integrated amount of the first power in the time period reaches a threshold based on a probability distribution of a predicted amount of the first power to be integrated in the time period, and to reduce, to 0 or a fixed value, the usage ratio after the integrated amount of the first power in the time period reaches the threshold.

### Claim 10 (depends on 1)

The device of claim 1, further comprising a setter configured to set a threshold in accordance with an operation of an operator, wherein
the controller is configured to set, to 0 or a fixed value, the usage ratio after an integrated amount of the first power in the time period reaches the threshold set by the setter.

### Claim 11 (depends on 1)

The device of claim 1, wherein controller includes
a usage calculator configured to calculate the usage ratio based on a threshold based on a probability distribution of a predicted amount of the first power to be integrated in the time period,
a command value calculator configured to calculate, based on the usage ratio, a command value to a hydrogen production device and a power conditioner that are included in the hydrogen system, and
an output part configured to output the command value to the hydrogen production device and the power conditioner.

### Claim 12

A hydrogen-system controlling method for producing hydrogen using first power generated by a renewable energy system and second power supplied from a power grid, the method comprising:
an acquisition process of acquiring a predicted value of the first power for a time period for which an amount of the second power to be received has been set; and
a control process of causing the hydrogen system to additionally produce hydrogen in an amount corresponding to a usage ratio of surplus power by which a supplied value of the first power exceeds a predicted value of the first power, wherein
the control process sets the usage ratio for a first time period within the time period to a value larger than the usage ratio for a second time period that is after the first time period and within the time period.