WO2013046713A1 - エネルギー制御システム、エネルギー制御装置、およびエネルギー制御方法 - Google Patents
エネルギー制御システム、エネルギー制御装置、およびエネルギー制御方法 Download PDFInfo
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- WO2013046713A1 WO2013046713A1 PCT/JP2012/006240 JP2012006240W WO2013046713A1 WO 2013046713 A1 WO2013046713 A1 WO 2013046713A1 JP 2012006240 W JP2012006240 W JP 2012006240W WO 2013046713 A1 WO2013046713 A1 WO 2013046713A1
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- power
- generation unit
- power generation
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- generated
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/14—Balancing the load in a network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/62—The condition being non-electrical, e.g. temperature
- H02J2310/64—The condition being economic, e.g. tariff based load management
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Definitions
- the present invention relates to an energy control system, an energy control device, and an energy control method.
- the present invention relates to an energy control system that controls power generated by a solar power generation unit and a gas power generation unit, an energy control apparatus, and an energy control method.
- a fuel cell is known as one that converts energy of fuel directly into electrical energy.
- the fuel cell generally has a structure in which a pair of porous electrodes, ie, a fuel electrode and an air electrode, are disposed with the electrolyte layer in between, and hydrogen is in contact with the fuel electrode and oxygen is in contact with the air electrode.
- a fuel cell of such a structure is designed to generate electricity by electrochemically reacting hydrogen and oxygen.
- Patent Document 1 proposes a fuel cell system that facilitates operation following a power load of a load device (hereinafter simply referred to as "following operation").
- This fuel cell system employs an exothermic reaction such as a partial oxidation reaction when reforming the raw fuel into hydrogen.
- the exhaust gas of the fuel cell main body is not used as a heating source of the fuel reforming unit.
- This fuel cell system can change the supply amount of raw fuel to the fuel reforming unit and the fuel utilization rate of the fuel cell body according to the power demand and the heat demand in the fuel cell body.
- the power sold to the power system can be sold relatively high. Therefore, if both fuel cell power generation and solar power generation are used, while the power generated by the fuel cell is supplied to the load device, the power generated by solar power generation is sold to the system, and the sold price is used as fuel Economic operation can be performed to cover the cost of fuel for the battery.
- the price of selling the power can not be used for the cost of the fuel of the fuel cell. Moreover, there is a possibility that the electric power which can not be sold even though the solar power is generated may be wasted.
- an object of the present invention made in view of such circumstances is an energy control which can be economically operated not only at the time of sale of power generated by solar power but also at the time of sale of electricity not possible.
- a system, an energy control device, and an energy control method are provided.
- the invention of an energy control system is: A solar power generation unit that is interconnected and generates electricity using sunlight, A gas power generation unit that generates electricity using gas, When it is possible to sell the power generated by the solar power generation unit to the grid, the power generated by the gas generation unit is preferentially supplied to the load, A control unit configured to preferentially supply power generated by the solar power generation unit to a load when the power sale is not possible; Is provided.
- control unit is configured to generate the power generated by the solar power generation unit when the power sale is possible and the power generated by the gas power generation unit is insufficient to supply the load. Is preferably controlled to supply the load.
- control unit is configured to generate power from the grid when it is possible to sell the electricity, and it is insufficient to supply the power generated by the gas power generation unit and the solar power generation unit to the load. It is preferable to control to purchase power.
- control unit is also capable of generating the electric power generated by the gas power generation unit when the electric power generation by the solar power generation unit is insufficient even if the electric power generated by the solar power generation unit is insufficient. It is preferable to control to supply the load.
- control unit is configured to perform the gas power generation unit when the power sale is not possible and the power required by the load can be sufficiently supplied by the power generated by the solar power generation unit. It is preferable to instruct to perform the idling operation.
- control unit is configured to generate electric power from the grid when the electric power generation is not possible and the electric power generated by the solar power generation unit and the gas generation unit is insufficient even when supplied to the load. It is preferable to control to buy power.
- control unit may control the load to suppress power consumption when power can not be purchased from the grid.
- the invention of the energy control device is: A solar power generation unit that is interconnected and generates electricity using sunlight, A gas power generation unit that generates electricity using gas, Energy control device to control If the power generated by the solar power generation unit can be sold to the grid, the power generated by the gas generation unit is preferentially supplied to the load, If the power generated by the solar power generation unit can not be sold to the grid, the power generated by the solar power generation unit is controlled to be supplied preferentially to the load.
- the invention of the energy control method is: An energy control method for controlling a solar power generation unit that generates power using sunlight and a gas power generation unit that generates power using gas, A determination step of determining whether the power generated by the solar power generation unit can be sold to the system; If electric power selling is possible, electric power generated by the gas power generation unit is preferentially supplied to the load, and if electric power selling is not possible, electric power generated by the photovoltaic power generation unit is preferentially supplied to the load Control steps to The
- the invention of the energy control device is: An energy control device for controlling a solar power generation unit that generates power using sunlight and a gas power generation unit that generates power using gas, It is determined whether the power generated by the solar power generation unit can be sold to the grid, According to whether or not the power sale is possible, the power generated by the gas power generation unit is preferentially supplied to the load, If the power generated by the solar power generation unit can not be sold to the grid, the power generated by the solar power generation unit is controlled to be supplied preferentially to the load.
- an energy control system an energy control apparatus, and an energy control that can be operated economically even when it is impossible to sell solar power, as well as when it is possible.
- FIG. 1 is a diagram showing an example of a schematic configuration of an energy control system according to an embodiment of the present invention.
- the energy control system 1 includes a solar power generation unit 10, a PV power adjustment unit 12, a fuel cell power generation unit 20, and a control unit 30.
- control lines indicating exchange of control signals between the functional units are indicated by broken lines, and power lines indicating the flow of power between the functional units are indicated by solid lines.
- each control line may be wired or wireless.
- Each control line may be a protocol unique to the manufacturer, but it is more preferable that signals are transmitted and received according to a standard protocol such as ECHONET Lite or ZigBee (trademark).
- the solar power generation unit 10 generates electricity using sunlight. For this reason, the solar power generation unit 10 includes a solar cell, and converts the energy of sunlight directly into electric power. In the present embodiment, it is assumed that the solar power generation unit 10 installs a solar panel, for example, on the roof of a house and generates power using sunlight. However, in the present invention, as long as the solar power generation unit 10 can convert the energy of sunlight into electric power, any unit can be adopted. As shown in FIG. 1, the photovoltaic power generation unit 10 is connected to a power system (commercial power supply) 40 via the PV power adjustment unit 12. That is, the solar power generation unit 10 is grid-connected.
- a power system commercial power supply
- a PV (photovoltaic: solar power generation) power adjustment unit 12 adjusts the power generated by the solar power generation unit 10 using sunlight. That is, the PV power adjustment unit 12 adjusts by controlling the operation method of the solar power generation unit 10 and the generated power.
- the PV power adjustment unit 12 can be an element having an adjustment function such as, for example, a PV power conditioner.
- the fuel cell power generation unit 20 can generate electric power using a fuel cell that causes an electrochemical reaction of gases such as hydrogen and oxygen supplied from the outside, and can supply the generated electric power. Therefore, in the present embodiment, the fuel cell power generation unit 20 constitutes the gas power generation unit of the present invention.
- the gas power generation unit of the present invention generates power using gas.
- the fuel cell power generation unit 20 after the fuel cell is started, the fuel cell power generation unit 20 can operate without receiving the power from the electric power system, that is, can operate independently.
- the fuel cell power generation unit 20 includes other functional units such as a reforming unit as necessary so that the fuel cell power generation unit 20 can operate independently.
- the control unit 30 controls these functional units by exchanging control signals with the PV power adjustment unit 12, the fuel cell power generation unit 20, and the load devices 1 to N (50-1 to N).
- Each of the load devices 1 to N is a generic name of devices used by the user, such as, for example, a refrigerator, a television, an air conditioner, and a lighting fixture, and is abbreviated as “load” in the present specification.
- the control unit 30 can be, for example, an element having a control / management function such as a home energy management system (HEMS). Therefore, in the present embodiment, the control unit 30 constitutes the energy control device of the present invention. Details of control by the control unit 30 in the present embodiment will be described later.
- the AC power supply 40 of the power system represents a supply source of AC power of the power system.
- the AC power supply 40 of the power system is simply abbreviated as "power system 40".
- the load device 50 is a generic name of devices such as home appliances used by the user, to which power is supplied from the energy control system 1. Therefore, it should be noted that the load device 50 is generally treated as not generally included in the energy control system 1.
- FIG. 1 shows load device 1 (50-1), load device 2 (50-2), and load device N (50-N) as a representative example, it is possible to load any user-use device
- the device 50 can be connected to the energy control system 1.
- the energy control system 1 includes the solar power generation unit 10 and the fuel cell power generation unit 20, power can be supplied from both of these power generations.
- the solar power generation unit 10 and the fuel cell power generation unit 20 can operate independently even when the power supply from the power system is interrupted, such as at the time of a power failure.
- FIG. 2 is a diagram showing an example of a schematic configuration of the control unit 30 shown in FIG.
- the control unit 30 includes a load power consumption acquisition unit 31, a load control unit 32, a photovoltaic power generation acquisition unit 33, a selling or not selling information acquisition unit 34, a fuel cell generated power calculation unit 35, and a fuel.
- a battery power generation control unit 36 is provided.
- the load power consumption acquisition unit 31 acquires information on power consumption from each load device in the house where the energy control system 1 is installed.
- the load control unit 32 controls each load device in the house where the energy control system 1 is installed. Specifically, the load control unit 32 performs, for example, operation control for changing the power consumption of each load device.
- the photovoltaic power generation acquisition unit 33 acquires, from the PV power adjustment unit 12, information (for example, the amount of power) of the power generated by the photovoltaic power generation unit 10.
- the power sale possibility information acquisition unit 34 receives information from the PV power adjustment unit 12 as to whether or not it is possible to sell power to the power system 40 (sale to a power company), and where power sale is not possible. Get information on factors that are impossible to Here, for example, a power failure in a system of a commercial power source, or a voltage increase suppression of the solar power generation unit 10 can be assumed as a factor when power sale is impossible.
- the fuel cell power generation calculation unit 35 calculates information (for example, the amount of power) of the power generated by the fuel cell power generation unit 20.
- the fuel cell power generation control unit 36 controls the operation method of the fuel cell power generation unit 20 and the generated power.
- FIG. 3 is a flowchart illustrating an outline of processing by the control unit 30 when the energy control system 1 according to the present embodiment operates.
- the power sale possibility information acquisition unit 34 of the control unit 30 When the energy control system 1 according to the present embodiment shown in FIG. 3 starts operation, first, the power sale possibility information acquisition unit 34 of the control unit 30 generates the power generated by the photovoltaic power generation unit 10 from the PV power adjustment unit 12. The information on whether or not it is possible to sell electricity is acquired (step S11). When acquiring the information on the power sale propriety in step S11, the information on the power sale propriety may be notified regularly from the PV power adjustment unit 12. Alternatively, in step S11, the power sale availability information acquisition unit 34 of the control unit 30 may request information on the power sale availability, and the PV power adjustment unit 12 may notify the information on the power sale availability according to the request. Good.
- the control unit 30 determines whether or not the power generation of the power generated by the solar power generation unit 10 is possible (step S12). ). If power sale is possible in step S12, control unit 30 performs processing when power sale is possible (step S13). On the other hand, when it is not possible to sell electricity in step S12, the control unit 30 performs processing when sale of electricity is not possible (step S14). By repeating the process shown in FIG. 3 as described above at, for example, predetermined time intervals, the control unit 30 can start from a state where power sale is possible or from a state where power sale is not possible. Even when changing to the state, it is possible to switch to processing corresponding to each.
- FIG. 4 is a flow chart for explaining the details of the processing when the power can be sold by the solar power generation unit 10 in step S13 of FIG. 3.
- the power generated by the photovoltaic power generation unit 10 can be sold to the power system 40, and the power can be purchased from the power system 40.
- the load power consumption acquisition unit 31 of the control unit 30 consumes power from load devices 1 to N (50-1 to N) in the house where the energy control system 1 is installed.
- Information is acquired (step S21).
- the solar power generation power acquisition unit 33 acquires information (for example, the amount of power) of power that can be generated by the solar power generation unit 10 from the PV power adjustment unit 12, and the fuel cell power generation calculation unit 35 performs fuel cell power generation.
- the power that can be generated by the unit 20 is calculated (for example, the amount of power) (step S22).
- steps S21 and S22 various types of information may be notified from the respective functional units to the control unit 30, or the control unit 30 may acquire various types of information in the respective functional units.
- the control unit 30 can acquire various types of information from these functional units.
- the control unit 30 determines whether or not the power consumption of each of the load devices 1 to N acquired in step S21 can be sufficient for the maximum power that the fuel cell power generation unit 20 acquired in step S22 can generate. Step S23). If it is determined in step S23 that the power consumption of each of the load devices 1 to N is sufficient for the maximum power of the fuel cell power generation unit 20, the control unit 30 instructs the fuel cell power generation unit 20 to perform load following power generation ( Step S24).
- the control unit 30 since the fuel cell power generation unit 20 can receive the power consumption of each of the load devices 1 to N without supplying the maximum generated power, the control unit 30 is configured so that the fuel cell power generation unit 20 corresponds to each load device. Control is performed to generate power for 1 to N power consumption. Further, in this case, since the power generated by the solar power generation unit 10 is surplus power, the control unit 30 controls the PV power adjustment unit 12 to sell the surplus power (step S25).
- Step S23 when it is determined in step S23 that the power consumption of each of the load devices 1 to N is insufficient for the maximum power of the fuel cell power generation unit 20, the control unit 30 instructs the fuel cell power generation unit 20 to perform rated power generation. (Step S26). That is, in step S26, control unit 30 controls fuel cell power generation unit 20 to supply the maximum generated power.
- step S26 the control unit 30 determines the shortage of the power consumption of each of the load devices 1 to N which is not enough even if the fuel cell power generation unit 20 generates power with the maximum power determined in step S23 It is determined whether it is possible to compensate for the power generated by the unit 10 (step S27). If it is determined in step S27 that the shortage of the power consumption of each of the load devices 1 to N can be compensated by the maximum power of the photovoltaic power generation unit 10, the control unit 30 generates the power that the photovoltaic power generation unit 10 generates the shortage. To make a supplement (step S28).
- the control unit 30 distributes the shortage of the power consumption of each of the load devices 1 to N described above to the load devices 1 to N as power consumption.
- PV power adjustment unit 12 is controlled.
- the control unit 30 controls the PV power adjustment unit 12 to sell the surplus power (step S29).
- Step S27 when it is determined in step S27 that the shortage of the power consumption of each of the load devices 1 to N can not be compensated by the maximum power of the solar power generation unit 10, the control unit 30 causes the solar power generation unit 10 to generate rated power. (Step S30). That is, the control unit 30 controls the PV power adjustment unit 12 so that the solar power generation unit 10 generates power with the maximum power. In this case, even if the fuel cell power generation unit 20 performs rated power generation and the photovoltaic power generation unit 10 further performs rated power generation, the power consumption of each of the load devices 1 to N is insufficient.
- the control unit 30 is a shortage of the power consumption of each of the load devices 1 to N which is insufficient even if the fuel cell power generation unit 20 generates the maximum power, and the solar power generation unit 10 generates the power with the maximum power.
- it instructs the electric power system 40 to buy a part that is still insufficient (step S31). That is, the control unit 30 buys a shortage of power from the power system 40, and controls the purchased power to be appropriately distributed to the load devices 1 to N.
- the control unit 30 can cope with various situations that have changed.
- the control unit 30 determines whether the power generated by the solar power generation unit 10 can be sold by the grid. Then, when it is determined that the sale of the power generated by the solar power generation unit 10 is possible, the control unit 30 controls to preferentially supply the power generated by the fuel cell generation unit 20 to the load.
- the load means each of the load devices 1 to N (50-1 to N).
- control unit 30 supplies the power generated by the photovoltaic power generation unit 10 to the load when the power generated by the fuel cell power generation unit 20 is insufficient to be supplied to the load. Control. Furthermore, the control unit 30 performs control to purchase power from the power system 40 when supplying the power generated by the fuel cell power generation unit 20 and the photovoltaic power generation unit 10 to the load is insufficient.
- FIG. 5 is a flowchart for explaining the details of the processing when the power can not be sold by the photovoltaic power generation unit 10 in step S14 of FIG. 3.
- FIG. 5 assumes the scene which changed into the state which can not sell electric power from the state which can sell electric power demonstrated in FIG. Therefore, it is assumed that the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 both generate power using rated power generation at the start of the process shown in FIG. 5.
- the load power consumption acquisition unit 31 of the control unit 30 consumes power from the load devices 1 to N (50-1 to N) in the house where the energy control system 1 is installed.
- Information is acquired (step S41).
- the solar power generation power acquisition unit 33 acquires information (for example, the amount of power) of power that can be generated by the solar power generation unit 10 from the PV power adjustment unit 12, and the fuel cell power generation calculation unit 35 performs fuel cell power generation.
- the power that can be generated by the unit 20 is calculated (for example, the amount of power) (step S42).
- steps S41 and S42 various types of information may be notified from the respective functional units to the control unit 30, or the control unit 30 may acquire various types of information in the respective functional units.
- the control unit 30 can acquire various types of information from these functional units.
- the control unit 30 determines whether or not the power consumption of each of the load devices 1 to N acquired in step S41 can be sufficient for the maximum power that the photovoltaic power generation unit 10 acquired in step S42 can generate. Step S43). If it is determined in step S43 that the power consumption of each of the load devices 1 to N is sufficient for the maximum power of the photovoltaic power generation unit 10, the control unit 30 instructs the fuel cell power generation unit 20 to perform idling operation (step S44).
- the operation of the fuel cell requires some electric power in gas supply and the like due to its configuration. As described above, in the fuel cell, the operation of weakly performing while generating power of a level necessary for operation is called idling operation.
- the control unit 30 controls the fuel cell power generation unit 20 to perform an idling operation in order to stop the operation while maintaining a state in which the fuel cell power generation unit 20 can resume the operation any time. Further, in this case, except for the case where the power consumption of each of the load devices 1 to N described above is equal to the maximum generated power of the solar power generation unit 10, a part of the maximum power generated by the solar power generation unit 10 Is the surplus power.
- control unit 30 instructs to suppress the power generated by solar power generation unit 10 so that solar power generation unit 10 does not generate the surplus power (step S45). That is, the control unit 30 controls the PV power adjustment unit 12 so that the power generated by the solar power generation unit 10 becomes equal to the power consumption of each of the load devices 1 to N described above.
- step S43 when it is determined in step S43 that the power consumption of each of the load devices 1 to N is insufficient for the maximum power of the solar power generation unit 10, the control unit 30 proceeds to the process of step S46.
- step S46 the shortage of the power consumption of each of the load devices 1 to N determined by step S43, which is insufficient even if the solar power generation unit 10 generates the maximum power, is the power generated by the fuel cell generation unit 20. It is determined whether it is possible to compensate (step S46).
- step S46 If it is determined in step S46 that the shortage of the power consumption of each of the load devices 1 to N can be compensated by the maximum power of the fuel cell power generation unit 20, can the control unit 30 purchase electricity from the power system 40? It is determined whether or not it is (step S47).
- control unit 30 instructs fuel cell power generation unit 20 to generate power using the specified power (step S48). That is, in step S48, control unit 30 sets the power designated as the power to compensate for the shortage of the power consumption of each of load devices 1 to N which is insufficient even if solar power generation unit 10 generates the maximum power. Control is performed so that the power generation unit 20 supplies. As described above, in the state where the fuel cell power generation unit 20 supplies the designated power, the fuel cell power generation unit 20 performs load following power generation.
- control unit 30 adds spare power when power generation is performed with the power specified by fuel cell power generation unit 20. (Step S49). That is, in step S49, the control unit 30 is larger than the power designated as the power to compensate for the shortage of the power consumption of each of the load devices 1 to N which is insufficient even if the photovoltaic power generation unit 10 generates the maximum power. Electric power is controlled to be supplied by the fuel cell power generation unit 20. As described above, in general, if the fuel cell is subjected to load-following power generation, it can not be expected that the power of the load device will increase because the height of the follow-up ability can not be expected so much. .
- step S49 the control unit 30 controls the fuel cell power generation unit 20 to generate power after preparing for an increase in the power consumption of the load device and taking into consideration the reserve power. As a result, even when the power consumption of the load device increases while the fuel cell power generation unit 20 is generating load following power, it can be dealt with if it is increased to a certain extent.
- step S47 when it is determined in step S47 that it is not possible to purchase power from the power system 40, the above-described reserve power is added, but this reserve power is determined based on other conditions. You may add it. For example, judging from the history of power consumption in the past, the time notified of the power sale impossibility is a time zone where the fluctuation of the power consumption of the load device is intense, and the load following power generation of the fuel cell power generation unit 20 can not catch up Therefore, reserve power may be added if it is expected that the power purchase will increase.
- step S46 when it is determined in step S46 that the power consumption of each of the load devices 1 to N can not be compensated by the maximum power of the fuel cell power generation unit 20, the control unit 30 buys power from the power system 40. It is determined whether or not (step S50).
- step S50 If it is determined in step S50 that it is possible to purchase power from the power system 40, the control unit 30 proceeds to the process of step S51.
- step S51 the control unit 30 is the shortage of the power consumption of each of the load devices 1 to N which is insufficient even if the photovoltaic power generation unit 10 generates the maximum power, and the fuel cell power generation unit 20 has the largest power.
- the power system 40 is instructed to purchase power from the power system 40 even if the power generation is still insufficient. That is, the control unit 30 buys a shortage of power from the power system 40, and controls the purchased power to be appropriately distributed to the load devices 1 to N.
- control unit 30 instructs to suppress the power consumption of each of load devices 1 to N (50-1 to N). (Step S52).
- the power consumption of each of the load devices 1 to N may not be sufficient even if the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 generate power with the maximum power, and power may be purchased from the power system 40. Can not. Therefore, in step S52, control unit 30 sets load devices 1 to N such that the power consumption of each of load devices 1 to N is equal to or less than the maximum generated power of photovoltaic power generation unit 10 and fuel cell power generation unit 20.
- the control unit 30 can cope with various situations, such as a change in availability of purchase, for example. it can.
- the control unit 30 determines whether the power generated by the solar power generation unit 10 can be sold to the grid, and if it is determined that the power sale is not possible, the solar power generation is performed.
- the power generated by the unit 10 is controlled to be supplied preferentially to the load.
- the load means each of the load devices 1 to N (50-1 to N).
- control unit 30 supplies the power generated by the fuel cell power generation unit 20 to the load when the power generated by the solar power generation unit 10 is insufficient to be supplied to the load. Control. Furthermore, the control unit 30 performs control to purchase power from the grid when it is insufficient to supply the power generated by the solar power generation unit 10 and the fuel cell power generation unit 20 to the load. However, when the power can not be purchased from the system, the control unit 30 controls the load so as to suppress the power consumption.
- the energy control system 1 of the present embodiment when surplus power of the solar power generation unit 10 can not be sold, it is not possible to compensate for the cost for power generation of the fuel cell power generation unit 20.
- the operation of the power generation unit 20 is stopped or suppressed.
- the energy control system 1 of the present embodiment can suppress the consumption of the gas used for the power generation of the fuel cell power generation unit 20, and can reduce the cost of the fuel as much as possible.
- the energy control device (the control unit 30) notifies the fuel cell power generation unit 20 of the generated power necessary as the power consumption of the load device.
- the energy control apparatus can appropriately notify the required generated power by adding spare power to the generated power by appropriately judging a time of power failure or a time zone in which the load fluctuation is severe. For this reason, the energy control system 1 of the present embodiment can improve the slowness of the load following speed at the time of power generation by the fuel cell. Furthermore, in the energy control system 1 of the present embodiment, the energy control device (control unit 30) controls each functional unit. For this reason, in the energy control system 1 of the present embodiment, there is no need to remodel the solar power generation unit 10 and the fuel cell power generation unit 20 on a large scale, and the cost of the entire system can also be suppressed.
- FIG. 6 changes the power consumption of a load apparatus in some cases, and the operation at the time of selling of the electric power which the photovoltaic power generation part 10 generated in each case is possible and impossible.
- FIG. 6 is a graph showing an example of FIG.
- the maximum power that the solar power generation unit 10 can generate at that time is 1000 W
- the rated power generation of the fuel cell power generation unit 20 is 700 W. Since the power obtained by solar power generation fluctuates due to factors such as the amount of solar radiation, the maximum power that can be generated by the solar power generation unit 10 may fluctuate with time.
- the bar indicated by “thick” indicates the state of the power generated by the photovoltaic power generation unit 10
- the bar indicated by "fuel” indicates the fuel cell power generation. The state of the electric power which the part 20 generates is shown.
- FIG. 6A shows an example where the total power consumption of the load devices 1 to N (50-1 to N) connected to the energy control system 1 is 500 W.
- FIG. 6A shows the state of the power generated by the solar power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the solar power generation unit 10 can be sold. ing. That is, at the time of the sale of electricity, the power consumption 500 W of the load devices 1 to N is sufficient with the maximum power 700 W generated by the fuel cell generator 20. Therefore, the fuel cell power generation unit 20 performs load following power generation with the power consumption 500 W of the load devices 1 to N, and the power 1000 W generated by the solar power generation unit 10 is sold (steps S24 and S25 in FIG. 4).
- FIG. 6A shows the state of the power generated by the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the photovoltaic power generation unit 10 can not be sold. It shows. That is, when power sale is not possible, the maximum power consumption 1000 W that the photovoltaic power generation unit 10 can generate at that time is sufficient for the power consumption 500 W of the load devices 1 to N. Therefore, fuel cell power generation unit 20 performs idling operation and power generation as power consumption of load devices 1 to N is not performed, and the power generated by solar power generation unit 10 is suppressed to 500 W and consumption of load devices 1 to N It is used as power (steps S44 and S45 in FIG. 5).
- FIG. 6B shows an example where the total power consumption of the load devices 1 to N (50-1 to N) connected to the energy control system 1 is 900 W.
- FIG. 6B shows the state of the power generated by the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the photovoltaic power generation unit 10 can be sold.
- the power consumption 900 W of the load devices 1 to N is not sufficient at the maximum power 700 W generated by the fuel cell power generation unit 20 when the power sale is possible. Therefore, the fuel cell power generation unit 20 generates power at a rated 700 W, and all the generated power is used as the power consumption of the load devices 1 to N.
- the shortage 200 W of the power consumption of the load devices 1 to N is compensated from the power 1000 W generated by the photovoltaic power generation unit 10.
- the surplus 800 W of the power 1000 W generated by the photovoltaic power generation unit 10 is sold (steps S 28 and S 29 in FIG. 4).
- FIG. 6B shows the state of the power generated by the solar power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the solar power generation unit 10 can not be sold. It shows. That is, when it is not possible to sell electricity, the power consumption 900 W of the load devices 1 to N is sufficient with the maximum power 1000 W that the photovoltaic power generation unit 10 can generate at that time. Therefore, fuel cell power generation unit 20 performs idling operation and power generation as power consumption of load devices 1 to N is not performed, and the power generated by solar power generation unit 10 is suppressed to 900 W and consumption of load devices 1 to N It is used as power (steps S44 and S45 in FIG. 5).
- FIG. 6C shows an example where the total power consumption of the load devices 1 to N (50-1 to N) connected to the energy control system 1 is 1200 W.
- FIG. 6C shows the state of the power generated by the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the photovoltaic power generation unit 10 can be sold.
- the power consumption 1200 W of the load devices 1 to N is not sufficient at the maximum electric power 700 W generated by the fuel cell power generation unit 20 when the power sale is possible. Therefore, the fuel cell power generation unit 20 generates power at a rated 700 W, and all the generated power is used as the power consumption of the load devices 1 to N.
- the shortage 500 W of the power consumption of the load devices 1 to N is compensated from the power 1000 W generated by the photovoltaic power generation unit 10.
- the surplus 500 W of the power 1000 W generated by the photovoltaic power generation unit 10 is sold (steps S28 and S29 in FIG. 4).
- FIG. 6C shows the state of the power generated by the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the photovoltaic power generation unit 10 can not be sold. It shows. That is, when it is not possible to sell electricity, the power consumption 1200 W of the load devices 1 to N is insufficient at the maximum power 1000 W that the photovoltaic power generation unit 10 can generate at that time. Therefore, the fuel cell power generation unit 20 generates power with the designated power of 200 W, and the generated power is used as power consumption of the load devices 1 to N.
- the above-mentioned designated power is increased by the reserve power, that is, more than 200 W to generate power of the fuel cell power generation unit 20 Is done.
- the solar power generation unit 10 generates power with the maximum power of 1000 W that can be generated at that time, and all the generated power is used as the power consumption of the load devices 1 to N (step S48 or S49 in FIG. 5). .
- FIG. 6D shows an example where the total power consumption of the load devices 1 to N (50-1 to N) connected to the energy control system 1 is 1900 W.
- FIG. 6D shows the state of the power generated by the photovoltaic power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the photovoltaic power generation unit 10 can be sold. ing. That is, at the time of sale, the power consumption 1900 W of the load devices 1 to N is not sufficient for the maximum power 700 W generated by the fuel cell power generation unit 20 and the maximum power 1000 W that the solar power generation unit 10 can generate at that time. . Therefore, the fuel cell power generation unit 20 generates power at a rated 700 W, and the solar power generation unit 10 generates power at the maximum power 1000 W that can be generated at that time, and all the generated power consumes the load devices 1 to N Used as power.
- the shortage 200 W of the power consumption of the load devices 1 to N is compensated by purchasing power from the power system 40 (steps S26, S30, and S31 in FIG. 4).
- the bar graph described as “purchase” indicates the state of power compensated by purchasing from the power system 40.
- FIG. 6D shows the state of the power generated by the solar power generation unit 10 and the fuel cell power generation unit 20 in the energy control system 1 when the power generated by the solar power generation unit 10 can not be sold. It shows. That is, when it is not possible to sell electricity, the power consumption 1900 W of the load devices 1 to N is sufficient with the maximum power 700 W generated by the fuel cell power generation unit 20 and the maximum power 1000 W that the solar power generation unit 10 can generate at that time. Absent. Therefore, when it is possible to purchase power from the power system 40, the shortage 200 W of the power consumption of the load devices 1 to N is compensated by purchasing from the power system 40 (step S51 in FIG. 5). . On the other hand, if it is not possible to purchase power from the power system 40, the power consumption 1900 W of the load devices 1 to N is reduced to 1700 W (step S52 in FIG. 5).
- the gas power generation unit according to the present invention has been described as the fuel cell power generation unit 20.
- the gas power generation unit according to the present invention is not limited to the power generation unit provided with the fuel cell, and for example, a gas turbine engine as long as it can supply power by generating power using gas. Any power generation unit such as a generator using
- control unit 30 determines whether or not the power sale is possible, based on the information acquired by the power sale possibility information acquisition unit 34 of the control unit 30.
- control unit 30 may not determine whether or not the power sale, but may determine other functional units inside or outside the energy control system.
- the information regarding the presence or absence of a power failure in the grid of the commercial power source is described based on an example of acquisition by the PV power adjustment unit 12; May be provided separately from the PV power adjustment unit 12.
- the power sale availability information acquisition unit 34 acquires information on a power failure from a separately provided means for detecting the occurrence of a power failure, determines the availability of power sale, and acquires information on the power sale impracticable factor. .
- the PV power adjustment unit 12 monitors the inflow direction of the current from the fuel cell power generation unit 20 so that the inflow direction of this current is shifted to the commercial power system side. It may be judged that the sale of electricity is not possible if it becomes. And in this case, the power sale availability information acquisition unit 34 also acquires the power sale availability information based on the inflow direction.
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Abstract
Description
系統連系されており、太陽光を利用して発電する太陽光発電部と、
ガスを利用して発電するガス発電部と、
前記太陽光発電部にて発電した電力を系統に売電することが可能である場合に、前記ガス発電部が発電する電力を優先して負荷に供給し、
前記売電が可能でない場合に、前記太陽光発電部が発電する電力を優先して負荷に供給するように制御する制御部と、
を備えるものである。
系統連系されており、太陽光を利用して発電する太陽光発電部と、
ガスを利用して発電するガス発電部と、
を制御するエネルギー制御装置であって、
前記太陽光発電部にて発電した電力を系統に売電可能なら、前記ガス発電部が発電した電力を優先して負荷に供給し、
前記太陽光発電部が発電した電力を系統に売電可能でないなら、前記太陽光発電部が発電した電力を優先して負荷に供給するように制御するものである。
太陽光を利用して発電する太陽光発電部と、ガスを利用して発電するガス発電部と、を制御するエネルギー制御方法であって、
前記太陽光発電部にて発電した電力を系統に売電可能か否か判定する判定ステップと、
前記売電が可能なら前記ガス発電部で発電した電力を優先して負荷に供給し、前記売電が可能でないなら前記太陽光発電部で発電した電力を優先して負荷に供給するように制御する制御ステップと、
を有するものである。
太陽光を利用して発電する太陽光発電部と、ガスを利用して発電するガス発電部と、を制御するエネルギー制御装置であって、
前記太陽光発電部にて発電した電力を系統に売電可能な状態であるか否かを判定し、
前記売電が可能か否かに応じて、前記ガス発電部に対して発電した電力を優先して負荷に供給し、
前記太陽光発電部が発電した電力を系統に売電可能でないなら、前記太陽光発電部が発電した電力を優先して負荷に供給するように制御するものである。
10 太陽光発電部
12 PV電力調整部
20 燃料電池発電部
30 制御部
40 電力系統
41 負荷消費電力取得部
42 負荷制御部
43 太陽光発電電力取得部
44 売電可否情報取得部
45 燃料電池発電電力算出部
46 燃料電池発電制御部
50 負荷機器
Claims (10)
- 系統連系されており、太陽光を利用して発電する太陽光発電部と、
ガスを利用して発電するガス発電部と、
前記太陽光発電部にて発電した電力を系統に売電することが可能である場合に、前記ガス発電部が発電する電力を優先して負荷に供給し、
前記売電が可能でない場合に、前記太陽光発電部が発電する電力を優先して負荷に供給するように制御する制御部と、
を備えるエネルギー制御システム。 - 前記制御部は、前記売電が可能である場合であって、かつ前記ガス発電部が発電する電力を負荷に供給しても不十分な場合に、前記太陽光発電部が発電する電力も前記負荷に供給するように制御する、請求項1に記載のエネルギー制御システム。
- 前記制御部は、前記売電が可能である場合であって、かつ前記ガス発電部および前記太陽光発電部が発電する電力を前記負荷に供給しても不十分な場合に、系統から電力を買電するように制御する、請求項1に記載のエネルギー制御システム。
- 前記制御部は、前記売電が可能でない場合であって、かつ前記太陽光発電部が発電する電力を負荷に供給しても不十分な場合に、前記ガス発電部が発電する電力も前記負荷に供給するように制御する、請求項1に記載のエネルギー制御システム。
- 前記制御部は、前記売電が可能でない場合であって、かつ負荷にて必要とされる電力が前記太陽光発電部が発電する電力により十分に供給可能な場合に、前記ガス発電部に対してアイドリング運転を行うよう指示する、請求項1に記載のエネルギー制御システム。
- 前記制御部は、前記売電が可能でない場合であって、かつ前記太陽光発電部および前記ガス発電部が発電する電力を前記負荷に供給しても不十分な場合に、系統から電力を買電するように制御する、請求項1に記載のエネルギー制御システム。
- 前記制御部は、系統から電力を買電できない場合には、消費電力を抑制するように前記負荷を制御する、請求項6に記載のエネルギー制御システム。
- 系統連系されており、太陽光を利用して発電する太陽光発電部と、
ガスを利用して発電するガス発電部と、
を制御するエネルギー制御装置であって、
前記太陽光発電部にて発電した電力を系統に売電可能なら、前記ガス発電部が発電した電力を優先して負荷に供給し、
前記太陽光発電部が発電した電力を系統に売電可能でないなら、前記太陽光発電部が発電した電力を優先して負荷に供給するように制御する、エネルギー制御装置。 - 太陽光を利用して発電する太陽光発電部と、ガスを利用して発電するガス発電部と、を制御するエネルギー制御方法であって、
前記太陽光発電部にて発電した電力を系統に売電可能か否か判定する判定ステップと、
前記売電が可能なら前記ガス発電部で発電した電力を優先して負荷に供給し、前記売電が可能でないなら前記太陽光発電部で発電した電力を優先して負荷に供給するように制御する制御ステップと、
を有するエネルギー制御方法。 - 太陽光を利用して発電する太陽光発電部と、ガスを利用して発電するガス発電部と、を制御するエネルギー制御装置であって、
前記太陽光発電部にて発電した電力を系統に売電可能な状態であるか否かを判定し、
前記売電が可能か否かに応じて、前記ガス発電部に対して発電した電力を優先して負荷に供給し、
前記太陽光発電部が発電した電力を系統に売電可能でないなら、前記太陽光発電部が発電した電力を優先して負荷に供給するように制御する、エネルギー制御装置。
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JP2015204678A (ja) * | 2014-04-14 | 2015-11-16 | 東京ガスエンジニアリングソリューションズ株式会社 | 発電システム |
JP2016086594A (ja) * | 2014-10-28 | 2016-05-19 | 京セラ株式会社 | 電力供給システム、電力供給機器及び電力供給システムの制御方法 |
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EP2763269A1 (en) | 2014-08-06 |
US20140236368A1 (en) | 2014-08-21 |
JP5964313B2 (ja) | 2016-08-03 |
EP2763269A4 (en) | 2015-06-17 |
EP2763269B1 (en) | 2018-01-24 |
US9846418B2 (en) | 2017-12-19 |
JPWO2013046713A1 (ja) | 2015-03-26 |
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