WO2017013751A1

WO2017013751A1 - Power supply system, control device, and power supply method

Info

Publication number: WO2017013751A1
Application number: PCT/JP2015/070749
Authority: WO
Inventors: 賢治藤本; 河野　龍興; 勝博小野; 田上　哲治; 大悟橘高; 浩史森田
Original assignee: 株式会社東芝
Priority date: 2015-07-21
Filing date: 2015-07-21
Publication date: 2017-01-26
Also published as: JPWO2017013751A1; JP6189448B2

Abstract

A power supply system of an embodiment supplies power to facilities by using power obtained from a natural energy power generation device that generates the power by using a natural energy. The power supply system is equipped with: a power conditioner device for adjusting the power generated by the natural energy power generation device; a storage battery; a hydrogen production device; a hydrogen storage device; a fuel cell; and a control means for controlling the operation of at least each of the storage battery, the hydrogen production device, the hydrogen storage device, and the fuel cell. The control means determines the amounts of power supplied to the storage battery and the hydrogen production device in the daytime on the basis of at least the estimated values of the amounts of power generated by the natural energy power generation device and demanded by the facilities in the daytime, and also determines the amounts of power supplied from the storage battery to the facilities and from the fuel cell to the facilities in the nighttime.

Description

Power supply system, control device, and power supply method

Embodiments described herein relate generally to a power supply system, a control device, and a power supply method.

When a disaster occurs, power is supplied to the disaster area where a power failure occurred using a small emergency power source. For example, a generator using a small diesel engine, a storage battery, or the like is used as an emergency small power source.

Since a generator using a diesel engine needs to supply fuel from the outside, it cannot supply power when fuel cannot be procured. For this reason, especially when fuel is not well stocked, or when the transportation network is interrupted due to a disaster and it is difficult to supply fuel, the power supply is not sufficient and it is difficult to quickly recover. .

It is conceivable to use a fuel cell as an emergency power source. However, even in the case of a fuel cell, when a fuel such as hydrogen cannot be procured, electric power cannot be supplied sufficiently.

It is also possible to use power generators that generate power using natural energy such as sunlight and wind power, but solar power and wind power generation are greatly affected by the weather and season, and the amount of power generated on rainy days. However, it is difficult to continuously supply power that meets the demand. In the case of hydroelectric power generation using hydropower, the same problem arises because it depends on the weather and the season.

JP 2004-171973 A Japanese Patent Laid-Open No. 9-50820

The problem to be solved by the present invention is to provide a power supply system, a control device, and a power supply method capable of continuously supplying power that satisfies demand.

An electric power supply system according to an embodiment is an electric power supply system that supplies electric power to a facility using electric power obtained from a natural energy power generation device that generates power using natural energy, and the natural energy power generation device generates power. A power conditioner device for adjusting power, a storage battery capable of storing and discharging at least a part of surplus power not supplied to the facility among the power adjusted by the power conditioner device, and adjustment by the power conditioner device A hydrogen production apparatus that produces hydrogen using at least a part of surplus power that is not supplied to the facility among the generated power, a hydrogen storage apparatus that can store and release hydrogen produced by the hydrogen production apparatus, and A fuel cell that generates electricity using hydrogen released by a hydrogen storage device, and at least the storage battery, Control means for controlling the operation of each of the element manufacturing apparatus, the hydrogen storage apparatus, and the fuel cell, and the control means includes at least a predicted value of the power generation amount of the natural energy power generation apparatus during the day and the The amount of power supplied to the storage battery during the day and the amount of power supplied to the hydrogen production device are determined based on the predicted value of the power demand of the facility and supplied from the storage battery to the facility at night An amount of electric power and an amount of electric power supplied from the fuel cell to the facility are determined.

FIG. 1 is a diagram illustrating an example of a configuration of a power supply system according to an embodiment. FIG. 2 is a block diagram illustrating an example of a functional configuration of the control device. FIG. 3 is a diagram illustrating an example of the annual balance between the amount of electric power of solar power generation and the amount of hydrogen stored in terms of the amount of electricity stored. FIG. 4 is a diagram showing examples of conditions 1 to 8 that are respectively applied to eight types of cases. FIG. 5 is a diagram schematically showing an example of control under conditions 1 to 4. FIG. 6 is a diagram schematically illustrating an example of control under

conditions

5 and 6. FIG. 7 is a diagram schematically illustrating an example of control under

conditions

7 and 8.

Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 is a diagram illustrating an example of a configuration of a power supply system according to an embodiment.

As shown in FIG. 1, a power supply system 100 generates power from a natural energy power generation device that generates power using natural energy, for example, a solar power generation device (solar panel 10) that generates power using sunlight. It is a self-supporting power supply system that uses and supplies power to a facility L such as a hotel, and includes, as components, a power conditioner device 20 (hereinafter “PCS20”), a water storage tank (water storage device) 30, and a hydrogen production device. 40, a hydrogen tank (hydrogen storage device) 50, a fuel cell 60, a storage battery 70, and a control device 80.

In addition, although the control apparatus 80 is arrange | positioned in the outer side of the electric power supply system 100 in the example of FIG. 1, it is not restricted to this example. The control device 80 may be configured as a part of the power supply system 100.

The solar panel 10 includes a solar cell, and constitutes a solar power generation device that generates electric power by generating light by receiving sunlight with the solar cell and performing photoelectric conversion. In addition, in this embodiment, although the solar panel 10 is illustrated as an example, you may employ | adopt another if it is a generator device which generate | occur | produces electric power using natural energy. For example, a wind power generator that generates power from wind power may be employed. Moreover, you may employ | adopt the hydroelectric power generator which generate | occur | produces electric power from hydraulic power.

PCS20 adjusts the electric power which the solar panel 10 generated. Here, the PCS 20 converts the electric power from the solar panel 10 into electric power that can be normally used in the facility L.

The water storage tank 30 stores water and supplies the stored water to the hydrogen production apparatus 40 and the fuel cell 60. In the example of FIG. 1, the water storage tank 30 is disposed inside the power supply system 100, but is not limited to this example. The water storage tank 30 may be provided outside the power supply system 100.

Under the control of the control device 80, the hydrogen production device 40 uses the electric power adjusted by the PCS 20 after being generated by the solar panel 10 to electrolyze the water supplied from the water storage tank 30 to generate hydrogen. Manufacturing. The hydrogen production apparatus 40 includes measurement devices (not shown) such as a gas sensor, a pressure gauge, and a flow meter, and data measured by the measurement device is output to the control device 80 as a data signal.

The hydrogen tank 50 includes a hydrogen storage alloy that is excellent in storing and releasing hydrogen, and stores and releases the hydrogen produced by the hydrogen production device 40 under the control of the control device 80. The hydrogen tank 50 includes measuring devices (not shown) such as a gas sensor, a pressure gauge, and a flow meter, and data measured by the measuring device is output to the control device 80 as a data signal.

Under the control of the control device 80, the fuel cell 60 generates power using the hydrogen stored in the hydrogen tank 50, and generates hot water using the water supplied from the water storage tank 30 and the exhaust heat. . The electric power generated by the power generation of the fuel cell 60 is supplied to the facility L on the demand side. The fuel cell 60 includes a measuring device (not shown) such as a gas sensor, a pressure gauge, and a flow meter, and a measuring device (not shown) that measures the amount of hydrogen storage, and data measured by the measuring device is data. A signal is output to the control device 80.

The storage battery 70 stores the electric power generated by the solar panel 10 and adjusted by the PCS 20 under the control of the control device 80. The electric power stored in the storage battery 70 can be supplied to the facility L by being discharged under the control of the control device 80. The storage battery 70 includes a measuring device (not shown) that measures the amount of stored electricity, and data measured by the measuring device is output to the control device 80 as a data signal.

The control device 80 is realized as, for example, an energy management system (EMS), and is configured to control each unit constituting the power supply system 100. The control device 80 includes an arithmetic unit (not shown) and a memory (not shown), and the arithmetic unit performs arithmetic processing using a program stored in the memory device, thereby controlling each unit. For example, the control device 80 determines the amount of hydrogen produced in the hydrogen production device 40, the amount of occluded / released hydrogen in the hydrogen tank 50, the amount of hydrogen stored in the fuel cell 60 based on various information obtained from outside or inside the power supply system 100. Control is performed with the amount of power generation as a control target.

FIG. 2 is a block diagram showing an example of the functional configuration of the control device 80. As shown in FIG.

The control device 80 includes an information acquisition unit 81, a determination unit 82, and a control unit 83.

The information acquisition unit 81 acquires various types of information necessary for control. For example, the information acquisition unit 81 inputs, as a data signal, data obtained by measurement equipment (not shown) measuring the state of each unit of the power supply system 100. In this case, the information acquisition unit 81 sequentially inputs, as a data signal, the amount of power used for a predetermined time in the electrical load of the facility L, as well as the amount of power output by the solar panel 10 and the storage of the storage battery 70. The data such as the amount, the amount of electric power output from the fuel cell 60, the amount of water stored in the water storage tank 30, the amount of hydrogen stored in the hydrogen tank 50, and the like are input as data signals. Furthermore, the information acquisition unit 81 also inputs, as a data signal, weather forecast information provided for a predetermined number of days provided from outside.

The determining unit 82 determines the control content for controlling the operation of each unit of the power supply system 100 based on various types of information acquired by the information acquiring unit 81.

For example, the determination unit 82 determines the predicted power generation amount of the solar panel 10 during the day (morning to evening), the predicted power demand amount of the facility, the storage amount of the storage battery 70, and the hydrogen storage amount of the hydrogen tank 50. The amount of power supplied from the PCS 20 to the facility L during the day (morning to evening), the amount of power supplied to the storage battery 70, and the amount of power supplied to the hydrogen production device 40 are determined during the daytime. It has a function of determining the amount of power supplied from the storage battery 70 to the facility L and the amount of power supplied from the fuel cell 60 to the facility L (from night to next morning). More specifically, the determination unit 82 has the following various functions.

For example, when the predicted value of the power generation amount of the solar panel 10 during the day predicted at the time of the morning is below a certain reference A, the determination unit 82 supplies the storage battery 70 with the entire amount of surplus power that is not supplied to the facility L. On the other hand, if it exceeds the certain standard A, the storage battery 70 is charged so that the storage battery 70 is charged to a predetermined capacity (for example, full charge) when the power generation of the solar panel 10 during the day is finished. A function of determining the amount of power to be supplied and determining the amount of power to be supplied to the hydrogen production apparatus 40 is provided. Here, “when it falls below a certain standard A” means that, for example, even if the entire amount of power generated by solar power generation is supplied until sunset with respect to the remaining amount of the storage battery 70 in the morning, it cannot be charged to a predetermined capacity. Refers to the case. Alternatively, even if the remaining surplus power is supplied to the hydrogen production apparatus 40 after supplying the entire amount of power generated by photovoltaic power generation to the remaining amount of the storage battery 70 at the time of the morning and charging it to a predetermined capacity, This refers to the case where manufacturing capacity cannot be demonstrated.

Moreover, the determination part 82 is the electric power supplied to the facility L from the storage battery 70 at night, for example, when the predicted value of the power generation amount of the solar panel 10 during the day of the next day predicted at the time of the evening exceeds a certain standard B. The amount of each power is determined so as to be larger than the amount of power supplied from the fuel cell 60 to the facility L. On the other hand, if the amount is below a certain standard B, the facility L from the fuel cell 60 at night is determined. Is provided with a function of determining the amount of each power so that the amount of power supplied to the battery L becomes larger than the amount of power supplied from the storage battery 70 to the facility L. Here, “when exceeding a certain standard B” means, for example, that the storage battery 70 is charged with the power generation amount of the solar panel 10 in the day of the predicted next day with respect to the remaining amount of the storage battery 70 at the next morning. Is the case where excess power is generated.

Furthermore, when the predicted value of the power generation amount of the solar panel 10 during the day is lower than the predicted value of the power demand amount of the facility L (that is, when there is no surplus power), the determination unit 82 receives power from the PCS 20 during the day. Is supplied to the facility L, and also from the storage battery 70 and the fuel cell 60, it is determined to supply power to the facility L, and the amount of each power is determined.

The control unit 83 performs control by sending a control signal to each unit of the power supply system 100 based on the control content determined by the determination unit 82.

The control by the control device 80 includes daily control and year-round control.

-Control in units of days In the control in units of days, both the advantages of the storage battery 70 capable of supplying power with a small size and rapid power and the advantages of the hydrogen tank 50 capable of storing a large capacity over a long period of time are utilized.

During the daytime (morning to evening), for example, the predicted power generation amount of the solar panel 10 during the daytime (morning to evening), the predicted power demand amount of the facility, the storage amount of the storage battery 70, and the hydrogen tank 50 Power supply based on the determined distribution after deciding the distribution of the amount of power supplied to the storage battery 70 and the amount of power supplied to the hydrogen production device 40 as surplus power not supplied to the facility L I do. In addition, when there is no surplus power and the power supplied to the facility L is insufficient with only the power obtained from the solar panel 10 through the PCS 20, for example, in addition to the power from the PCS 20, the power stored in the storage battery 70 is supplied. At the same time, the power generated by the fuel cell 60 using the hydrogen stored in the hydrogen tank 50 is supplied to the facility L.

Further, at night (night to next morning), for example, a predicted value of the power generation amount of the solar panel 10 during the day (morning to evening), a predicted value of the power demand amount of the facility, a storage amount of the storage battery 70, and a hydrogen tank Based on the hydrogen storage amount of 50, after allocating the amount of power supplied from the storage battery 70 to the facility L and the amount of power supplied from the fuel cell 60 to the facility L, the power supply based on the determined distribution is performed. Do.

・ Control throughout the year For control throughout the year, hydrogen that can be stored for a long time is used as a storage medium.

Fig. 3 shows an example of the annual balance between the amount of photovoltaic power generation and the amount of hydrogen stored in terms of the amount of electricity converted. In FIG. 3, 1 indicates the amount of power of solar power generation in the

solar panel

10, 2 indicates the power demand of the facility L, and 3 indicates the power amount converted value of the hydrogen storage amount in the hydrogen tank 50. Reference numeral 4 denotes a 100% line of the hydrogen storage amount in the hydrogen tank 50.

As can be seen from FIG. 3, in the summer, there are many days when the amount of electric power 1 of solar power generation exceeds the power demand 2, and there are many days when surplus power is generated. Therefore, it becomes possible to store a larger amount of surplus power than that in the winter in the hydrogen tank 50 as hydrogen by the hydrogen production apparatus 40, and effectively use it as an energy source for the winter without wasting surplus power. be able to. In winter, there are many days when the amount of electric power 1 of solar power generation does not reach the power demand 2. Thus, by using the power generated by the fuel cell 60 using the hydrogen stored in the hydrogen tank 50 for power supply to the facility L, power supply satisfying the power demand 2 can be realized.

By performing the above-described control in summer and winter, it becomes possible to satisfy 100% of the power demand of the facility L throughout the year.

Next, referring to FIG. 4 to FIG. 7, the daily control will be described with a specific example.

Here are 8 cases where the combination of the weather of the day and the weather of the next day is different.

FIG. 4 is a diagram showing examples of conditions 1 to 8 that are applied to 8 types of cases, respectively.

Condition 1 is that the control start time zone is “night (or evening)”, the day's weather (from morning to evening) is “sunny”, the solar panel 10 power generation amount is “A1”, and the next day's weather ( The next day (from morning to evening) is “clear”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B1”, the power supply amount from the PCS 20 to the storage battery 70 is “C1”, and the PCS 20 to the hydrogen production apparatus 40 Is “D1”, the power supply amount from the storage battery 70 to the facility L is “E1”, the power supply amount from the fuel cell 60 to the facility L is “F1”, and the direct power supply from the PCS 20 to the facility L The amount is “G1” and the power demand amount of the facility L is “H1”.

Condition 2 is that the control start time zone is “night (or evening)”, the day's weather (from morning to evening) is “sunny”, the solar panel 10 power generation amount is “A2”, and the next day's weather ( The next day (from morning to evening) is “rainy”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B2”, the power supply amount from the PCS 20 to the storage battery 70 is “C2”, and the PCS 20 to the hydrogen production apparatus 40 Power supply amount “D2”, power supply amount from the storage battery 70 to the facility L is “E2”, power supply amount from the fuel cell 60 to the facility L is “F2”, and direct power supply from the PCS 20 to the facility L The amount is “G2” and the power demand amount of the facility L is “H2”.

Condition 3 is that the control start time zone is “night (or evening)”, the day's weather (from morning to evening) is “rain”, the solar panel 10 power generation amount is “A3”, and the next day's weather ( “From the morning of the next day to the evening”) “Sunny”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B3”, the power supply amount from the PCS 20 to the storage battery 70 is “C3”, and the PCS 20 to the hydrogen production apparatus 40 Power supply amount “D3”, power supply amount from the storage battery 70 to the facility L is “E3”, power supply amount from the fuel cell 60 to the facility L is “F3”, and direct power supply from the PCS 20 to the facility L The amount is “G3” and the power demand amount of the facility L is “H3”.

Condition 4 is that the control start time zone is “night (or evening)”, the day's weather (from morning to evening) is “rain”, the solar panel 10 power generation amount is “A4”, and the next day's weather ( The next day (from morning to evening) is “rain”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B4”, the power supply amount from the PCS 20 to the storage battery 70 is “C4”, and the PCS 20 to the hydrogen production apparatus 40 Is “D4”, the power supply amount from the storage battery 70 to the facility L is “E4”, the power supply amount from the fuel cell 60 to the facility L is “F4”, and the direct power supply from the PCS 20 to the facility L The amount is “G4” and the power demand of the facility L is “H4”.

Condition 5 is that the control start time zone is “daytime (or morning)”, the day's weather (from morning to evening) is “sunny”, the power generation amount of the solar panel 10 on that day is “A1”, and the next day's weather ( The next day (from morning to evening) is “clear”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B1”, the power supply amount from the PCS 20 to the storage battery 70 is “C1”, and the PCS 20 to the hydrogen production apparatus 40 Is “D1”, the power supply amount from the storage battery 70 to the facility L is “E1”, the power supply amount from the fuel cell 60 to the facility L is “F1”, and the direct power supply from the PCS 20 to the facility L The amount is “G1” and the power demand amount of the facility L is “H1”.

Condition 6 is that the start time zone of control is “daytime (or morning)”, the weather of the day (from morning to evening) is “sunny”, the power generation amount of the solar panel 10 of the day is “A2”, and the weather of the next day ( The next day (from morning to evening) is “rainy”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B2”, the power supply amount from the PCS 20 to the storage battery 70 is “C2”, and the PCS 20 to the hydrogen production apparatus 40 Power supply amount “D2”, power supply amount from the storage battery 70 to the facility L is “E2”, power supply amount from the fuel cell 60 to the facility L is “F2”, and direct power supply from the PCS 20 to the facility L The amount is “G2” and the power demand amount of the facility L is “H2”.

Condition 7 is that the control start time zone is “daytime (or morning)”, the day's weather (from morning to evening) is “rain”, the solar panel 10 power generation amount is “A3”, and the next day's weather ( “From the morning of the next day to the evening”) “Sunny”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B3”, the power supply amount from the PCS 20 to the storage battery 70 is “C3”, and the PCS 20 to the hydrogen production apparatus 40 Power supply amount “D3”, power supply amount from the storage battery 70 to the facility L is “E3”, power supply amount from the fuel cell 60 to the facility L is “F3”, and direct power supply from the PCS 20 to the facility L The amount is “G3” and the power demand amount of the facility L is “H3”.

Condition 8 is that the control start time zone is “daytime (or morning)”, the day's weather (from morning to evening) is “rain”, the solar panel 10 power generation amount is “A4”, and the next day's weather ( The next day (from morning to evening) is “rain”, the predicted value of the power generation amount of the solar panel 10 of the next day is “B4”, the power supply amount from the PCS 20 to the storage battery 70 is “C4”, and the PCS 20 to the hydrogen production apparatus 40 Is “D4”, the power supply amount from the storage battery 70 to the facility L is “E4”, the power supply amount from the fuel cell 60 to the facility L is “F4”, and the direct power supply from the PCS 20 to the facility L The amount is “G4” and the power demand of the facility L is “H4”.

FIG. 5 schematically shows an example of control under conditions 1 to 4. It should be noted that the size of the symbols to which symbols C1, C3, D1, D3, E1 to E4, F1 to F4, and G1 to G4 in the figure represent the magnitude relationship between the power amounts of the respective units. Similarly, the size of the H ² symbol shown in each part in the figure expresses the magnitude relationship of the hydrogen amount in each part.

In condition 1, the day's weather (from morning to evening) is "sunny", and the next day's weather (from morning to evening in the next day) is "clear". The predicted value B1 of the power generation amount of the solar panel 10 of the next day is equal to or less than A1 of the solar panel 10 of the day, but the prediction of the power generation amount of the solar panel 10 during the next day predicted at the time of the evening. It is assumed that the value exceeds a certain standard B. In this case, the amount of each electric power is set so that the amount of electric power E1 supplied from the storage battery 70 to the facility L at night (night to next morning) is larger than the amount of electric power F1 supplied from the fuel cell 60 to the facility L. Control. Next, the amount of electric power G1 supplied from the PCS 20 to the facility L is controlled during the day (next morning to the next evening) on the next day, and the surplus power that is not supplied to the facility L is terminated during the daytime solar panel 10 power generation. The amount C1 of electric power supplied to the storage battery 70 and the amount D1 of electric power supplied to the hydrogen production apparatus 40 are controlled so that the storage battery 70 is charged to a predetermined capacity at the time.

In condition 2, the day's weather (from morning to evening) is "sunny", and the next day's weather (from morning to evening in the next day) is "rain". The predicted power generation amount B1 of the solar panel 10 of the next day is equal to or less than A1 of the solar panel 10 of the current day, and the predicted power generation amount of the solar panel 10 during the next day predicted at the time of the evening. However, it is assumed that the value falls below a certain standard B. In this case, the amount of each power is set so that the amount of power F2 supplied from the fuel cell 60 to the facility L at night (night to next morning) is larger than the amount of power E2 supplied from the storage battery 70 to the facility L. Control. Next, the amount of power G2 supplied from the PCS 20 to the facility L during the day of the next day (next morning to the next evening) is controlled, and supplied from the storage battery 70 to the facility L so as to compensate for the shortage of power supply to the facility L. The amount of electric power G2 to be supplied and the amount of electric power G2 supplied from the fuel cell 60 to the facility L are controlled.

In condition 3, the weather of the day (from morning to evening) is “rainy”, the weather of the next day (from morning to evening of the next day) is “sunny”, and the predicted value B3 of the power generation amount of the solar panel 10 of the next day is It is assumed that the power generation amount of the solar panel 10 on that day is A3 or more, and the predicted value of the power generation amount of the solar panel 10 during the next day predicted at the time of the evening exceeds a certain standard B. Since the control in this case is the same as in the case of condition 1, the description thereof is omitted here.

In condition 4, the day's weather (from morning to evening) is "rain", and the next day's weather (from morning to evening the next day) is "rain". The predicted value B4 of the power generation amount of the solar panel 10 of the next day is equal to or greater than A4 of the solar panel 10 of the day, but the prediction of the power generation amount of the solar panel 10 during the next day predicted at the time of the evening. It is assumed that the value is below a certain standard B. Since the control in this case is the same as in the case of Condition 2, the description thereof is omitted here.

FIG. 6 schematically illustrates an example of control under

conditions

5 and 6. In addition, the magnitude | size of the symbol to which the code | symbol C5, C6, D5, D6, E5, E6, F5, F6, G5, G6 in the figure represents the magnitude relationship of the electric energy of each part. Similarly, the size of the H ² symbol shown in each part in the figure expresses the magnitude relationship of the hydrogen amount in each part.

In condition 5, the weather of the day (from morning to evening) is “sunny”, and the next day's weather (from morning to evening of the next day) is “sunny”. Although the predicted value B5 of the power generation amount of the solar panel 10 of the next day is equal to or less than A5, the power generation amount of the solar panel 10 of the next day predicted in the morning is predicted. It is assumed that the value exceeds a certain standard A. In this case, the amount of power G5 supplied from the PCS 20 to the facility L is controlled, and for the surplus power not supplied to the facility L, the storage battery 70 is charged to a predetermined capacity when power generation by the solar panel 10 during the day is completed. Thus, the amount C5 of electric power supplied to the storage battery 70 and the amount D5 of electric power supplied to the hydrogen production apparatus 40 are controlled. Next, the amount of each electric power is controlled so that the amount of power E5 supplied from the storage battery 70 to the facility L at night (night to next morning) becomes larger than the amount of power F5 supplied from the fuel cell 60 to the facility L. To do.

In condition 6, the weather on the day (from morning to evening) is “sunny”, and the weather on the next day (from morning to evening on the next day) is “rain”. The predicted value B6 of the power generation amount of the solar panel 10 of the next day is the power generation amount of the solar panel 10 on the current day is A6 or less, but the prediction of the power generation amount of the solar panel 10 during the next day predicted in the morning. It is assumed that the value exceeds a certain standard A. In this case, the amount of power G6 supplied from the PCS 20 to the facility L is controlled, and the surplus power that is not supplied to the facility L is charged to the predetermined capacity when the solar panel 10 generates electricity during the daytime. Thus, the amount C6 of electric power supplied to the storage battery 70 and the amount D6 of electric power supplied to the hydrogen production apparatus 40 are controlled. Next, the amount of each power is controlled so that the amount of power F6 supplied from the fuel cell 60 to the facility L at night (night to next morning) becomes larger than the amount of power E6 supplied from the storage battery 70 to the facility L. To do.

FIG. 7 schematically illustrates an example of control under

conditions

7 and 8. It should be noted that the size of symbols to which symbols C7, C8, D7, E7, E8, F7, F8, G7, and G8 in the figure represent the magnitude relationship between the amounts of power of the respective units. Similarly, the size of the H ² symbol shown in each part in the figure expresses the magnitude relationship of the hydrogen amount in each part.

In condition 7, the day's weather (from morning to evening) is “rainy”, and the next day's weather (from morning to evening in the next day) is “clear”. The predicted power generation amount B7 of the solar panel 10 on the next day is the predicted power generation amount of the solar panel 10 on that day, and the predicted power generation amount of the solar panel 10 on the next day, which is predicted in the morning. However, it shall exceed a certain standard A. In this case, the amount of power G7 supplied from the PCS 20 to the facility L is controlled, and for the surplus power not supplied to the facility L, the storage battery 70 is charged to a predetermined capacity when power generation by the solar panel 10 during the day ends. Thus, the amount C7 of electric power supplied to the storage battery 70 and the amount D7 of electric power supplied to the hydrogen production apparatus 40 are controlled. Next, the amount of each electric power is controlled so that the amount of electric power E7 supplied from the storage battery 70 to the facility L at night (night to next morning) becomes larger than the amount of electric power F7 supplied from the fuel cell 60 to the facility L. To do.

In condition 8, the weather of the day (from morning to evening) is “rain”, and the weather of the next day (from morning to evening of the next day) is “rain”. The predicted value B8 of the power generation amount of the solar panel 10 of the next day is the power generation amount of the solar panel 10 on that day is A8 or more, but the power generation amount of the solar panel 10 during the next day predicted at the time of the morning It is assumed that the value is below a certain standard A. In this case, the amount G7 of power supplied from the PCS 20 to the facility L is controlled, and the surplus power not supplied to the facility L is controlled so as to supply the entire amount C8 of surplus power to the storage battery 70. Next, the amount of each power is controlled so that the amount of power F8 supplied from the fuel cell 60 to the facility L at night (night to next morning) becomes larger than the amount of power E8 supplied from the storage battery 70 to the facility L. To do.

Thus, according to this embodiment, even when using a power generation device whose power generation amount depends on the weather and season, by performing power supply control utilizing both the advantages of the storage battery and the advantage of the hydrogen storage device, It is possible to continuously supply power that satisfies the power demand of the facility throughout the day and year.

As described in detail above, according to at least one embodiment, it is possible to continuously supply power that satisfies demand.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Electric power amount of photovoltaic power generation, 2 ... Electric power demand, 3 ... Electric power amount conversion value of hydrogen storage amount, 4 ... 100% line of hydrogen storage amount, 10 ... Solar panel, 20 ... Power conditioner apparatus (PCS) , 30 ... Water storage tank, 40 ... Hydrogen production device, 50 ... Hydrogen tank, 60 ... Fuel cell, 70 ... Storage battery, 80 ... Control device, 100 ... Power supply system.

Claims

A power supply system that supplies power to a facility using power obtained from a natural energy power generation device that generates power using natural energy,
A power conditioner device for adjusting the power generated by the natural energy power generation device;
A storage battery capable of storing and discharging at least part of surplus power not supplied to the facility among the power adjusted by the power conditioner device;
A hydrogen production device for producing hydrogen using at least a part of surplus power not supplied to the facility among the electric power adjusted by the power conditioner device;
A hydrogen storage device capable of storing and releasing hydrogen produced by the hydrogen production apparatus;
A fuel cell that generates electricity using hydrogen released by the hydrogen storage device;
Control means for controlling at least the operations of the storage battery, the hydrogen production device, the hydrogen storage device, and the fuel cell,
The control means includes at least an amount of power supplied to the storage battery during the day based on a predicted value of the power generation amount of the natural energy power generation device during the day and a predicted value of power demand of the facility, and the hydrogen production device. And determining the amount of power supplied from the storage battery to the facility at night and the amount of power supplied from the fuel cell to the facility. .
The control device includes:
When the predicted value of the amount of power generated by the natural energy power generation device during the day is below a certain standard, it is decided to supply all the surplus power not supplied to the facility to the storage battery. Determines the amount of power to be supplied to the storage battery so that the storage battery is charged to a predetermined capacity at the end of daytime power generation by the natural energy power generation apparatus and The power supply system according to claim 1, wherein an amount is determined.
The control device includes:
When the predicted value of the amount of power generated by the natural energy power generation device during the next day exceeds a certain standard, the amount of power supplied from the storage battery to the facility at night is the amount of power supplied from the fuel cell to the facility. The amount of each electric power is determined so as to be larger than the amount. On the other hand, if it falls below a certain standard, the amount of electric power supplied from the fuel cell to the facility at night is supplied from the storage battery to the facility. The power supply system according to claim 1 or 2, wherein the amount of each power is determined so as to be larger than the amount of power.
The control device includes:
When the predicted value of the power generation amount of the natural energy power generation device during the day is lower than the predicted value of the power demand amount of the facility, power is supplied from the power conditioner device to the facility and from the storage battery and the fuel cell The power supply system according to any one of claims 1 to 3, wherein the power supply is determined to be supplied to the facility.
A control device applied to a power supply system that supplies power to a facility using power obtained from a natural energy power generation device that generates power using natural energy,
A storage battery capable of storing and discharging at least a part of surplus power not supplied to the facility among power adjusted by a power conditioner device that adjusts power generated by the natural energy power generation device, and the power conditioner device. A hydrogen production apparatus that produces hydrogen using at least a part of surplus power that is not supplied to the facility among the adjusted power; a hydrogen storage apparatus that is capable of storing and releasing hydrogen produced by the hydrogen production equipment; Comprising a control means for controlling each operation of the fuel cell that generates electricity using hydrogen released by the hydrogen storage device;
The control means includes at least an amount of power supplied to the storage battery during the day based on a predicted value of the power generation amount of the natural energy power generation device during the day and a predicted value of power demand of the facility, and the hydrogen production device. And determining the amount of power supplied from the storage battery to the facility at night and the amount of power supplied from the fuel cell to the facility.
A power supply method applied to a power supply system that supplies power to a facility using power obtained from a natural energy power generation device that generates power using natural energy,
A storage battery capable of storing and discharging at least a portion of surplus power not supplied to the facility among power adjusted by a power conditioner device that adjusts power generated by the natural energy power generation device by the control device, and the power Hydrogen production apparatus that produces hydrogen using at least a part of surplus power that is not supplied to the facility among the electric power adjusted by the conditioner apparatus, and hydrogen that can be stored and released by the hydrogen production equipment Controlling each operation of a storage device and a fuel cell that generates electricity using hydrogen released by the hydrogen storage device;
Prior to performing the control, the control device supplies power to the storage battery during the day based on at least a predicted value of the power generation amount of the natural energy power generation device during the day and a predicted value of the power demand amount of the facility during the day. And the amount of power supplied to the hydrogen production apparatus, and the amount of power supplied from the storage battery to the facility at night and the amount of power supplied from the fuel cell to the facility. A power supply method characterized by the above.