WO2012017649A1 - 電力供給システム、電力供給システムの制御装置、電力供給システムの運転方法、及び電力供給システムの制御方法 - Google Patents
電力供給システム、電力供給システムの制御装置、電力供給システムの運転方法、及び電力供給システムの制御方法 Download PDFInfo
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- WO2012017649A1 WO2012017649A1 PCT/JP2011/004393 JP2011004393W WO2012017649A1 WO 2012017649 A1 WO2012017649 A1 WO 2012017649A1 JP 2011004393 W JP2011004393 W JP 2011004393W WO 2012017649 A1 WO2012017649 A1 WO 2012017649A1
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- power
- power generation
- generation system
- supply system
- control device
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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
- H02J2300/10—The dispersed energy generation being of fossil origin, e.g. diesel 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
- H02J2300/30—The power source being a fuel cell
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S50/00—Market activities related to the operation of systems integrating technologies related to power network operation or related to communication or information technologies
- Y04S50/10—Energy trading, including energy flowing from end-user application to grid
Definitions
- the present invention relates to a power supply system including a power generation system, and a power storage unit that supplies power to the power generation system and an external power load, a control device for the power supply system, an operation method for the power supply system, and a control method for the power supply system About.
- Patent Document 1 Conventionally, there has been proposed an electricity bill simulation system in which the setting of electricity bills is changed according to the amount of power consumed by consumers (see, for example, Patent Document 1).
- the electricity price simulation system disclosed in Patent Document 1 based on the information on the power consumption of the power consumer measured every predetermined time, the usage is determined depending on which time zone of the day the power is used. It is configured to calculate electricity charges corresponding to various electricity charge contract plans such as electricity charge contract plans of different types.
- the present invention provides a start-up capability of a power generation system while suppressing an increase in a consumer's power rate when an electricity rate system in which the power rate varies according to the power used by the consumer as described above is introduced.
- a power supply system, a power supply system, a method for operating the power supply system, and a control device for the method for controlling the power supply system are provided.
- an electric power supply system includes an electric power generation system, an electric storage unit that supplies electric power to the electric power generation system and an external electric power load, and when the electric power generation system is activated, When it is predicted that the sum of the starting power and the power consumption of the external power load will exceed the upper limit power maintained at the unit price of the relatively low electricity rate, and will be changed to the unit price of the relatively high electricity rate
- First control for controlling to supply power of the power storage unit to at least one of the power generation system and the external power load so that power supplied from the power system does not exceed the upper limit power
- the power generation of the power generation system is stopped, the sum of the stop power of the power generation system and the power consumption of the external power load is relatively low
- the unit price of gold will be changed to a unit price of a relatively high electric charge exceeding the upper limit power maintained at the unit price of gold
- the power supplied from the power system should not exceed the upper limit power
- a control device configured to execute at least one of a second control for controlling to supply
- a power supply system control device is a power supply system control device that controls a power supply system that includes a power generation system, an external power load, and the power generation system and a power storage unit that supplies power to the external power load.
- the control device of the power supply system when starting up the power generation system, reduces the unit price of the electricity bill so that the sum of the start power of the power generation system and the power consumption of the external power load is relatively low.
- the power storage unit is configured so that the power supplied from the power system does not exceed the upper limit power when the upper limit power to be maintained is expected to be changed to a unit price of a relatively high electricity rate.
- a first control that controls the power generation system and at least one of the external power load and the power generation system.
- the electric power supplied from the electric power system is used so that the electric power of the power storage unit does not exceed the upper limit electric power, at least one of the power generation system and the external power load. It is configured to execute at least one of the second control for controlling to supply to either of them.
- the sum of the start power of the power generation system and the power consumption of the external power load is maintained at a relatively low unit price of the electric charge.
- the upper limit power is maintained such that the sum of the stop power of the power generation system and the power consumption of the external power load is relatively low.
- the upper limit is maintained such that the sum of the start power of the power generation system and the power consumption of the external power load is kept at a relatively low unit price.
- the upper limit power that is maintained at the unit price of the electricity rate, in which the sum of the stop power of the power generation system and the power consumption of the external power load is relatively low
- an electricity fee system in which the electricity fee varies depending on the power used by the consumer.
- at least one of the startability and the stopability of the power generation system is improved while suppressing an increase in the electricity charge of the consumer.
- FIG. 1 is a block diagram schematically showing a schematic configuration of the power supply system and the control device of the power supply system according to the first embodiment.
- FIG. 2 is a table that schematically shows an example of an electricity bill system in which a power bill fluctuates according to the power used by a consumer.
- FIG. 3A is a flowchart schematically showing an operation when the power generation system in the power supply system according to Embodiment 1 is started.
- FIG. 3B is a flowchart schematically showing an operation when power generation of the power generation system in the power supply system according to Embodiment 1 is stopped.
- FIG. 4A is a block diagram schematically showing a schematic configuration of the power generation system of Modification 1 in the power supply system according to Embodiment 1.
- FIG. 4B is an example of a block diagram schematically showing a schematic configuration of the power generation system of Modification 2 in the power supply system according to Embodiment 1.
- FIG. 4C is an example of a block diagram schematically showing a schematic configuration of the power supply system of Modification Example 2 in the power supply system according to Embodiment 1.
- FIG. 5A is a flowchart schematically showing an operation when starting the power generation system in the power supply system according to the second embodiment.
- FIG. 5B is an example of a flowchart schematically showing an operation when power generation of the power generation system in the power supply system according to Embodiment 2 is stopped.
- FIG. 6A is a flowchart schematically showing an operation when starting the power generation system in the power supply system according to the third embodiment.
- FIG. 6B is an example of a flowchart schematically showing an operation when power generation of the power generation system is stopped in the power supply system according to Embodiment 3.
- FIG. 7A is a flowchart schematically showing an operation when the power generation system is activated in the power supply system according to the fourth embodiment.
- FIG. 7B is an example of a flowchart schematically showing an operation when power generation of the power generation system is stopped in the power supply system according to Embodiment 4.
- FIG. 8 is a block diagram schematically showing a schematic configuration of the power supply system and the control device of the power supply system according to the fifth embodiment.
- the power supply system includes a power generation system, a power storage unit that supplies power to the power generation system and an external power load, and a control device (a control device for the power supply system).
- a control device a control device for the power supply system.
- the power storage unit It is configured to execute at least one of second control for controlling power to be supplied to at least one of the power generation system and the external power load.
- time when the power generation system is activated means at least one of the time when the power generation system is refraining from starting and the time when the power generation system is activated. I will explain mainly when I'm refraining.
- stopping the power generation of the power generation system means at least one of when the power generation system is stopped from stopping power generation and when the processing operation after power generation stop of the power generation system is performed, In the following, the case where the power generation system is stopped is mainly described.
- FIG. 1 is a block diagram schematically showing a schematic configuration of the power supply system and the control device of the power supply system according to the first embodiment.
- the power supply system 100 includes a power generation system 101, a power storage unit 107, and a control device (control device for the power supply system) 110.
- the control device 110 exceeds the upper limit power that is maintained at the unit price of the relatively low electricity rate, the sum of the starting power of the power generation system 101 and the power consumption of the external power load 105, and increases the unit price of the relatively high electricity rate.
- the power of the power storage unit 107 is at least one of the power generation system 101 and the external power load 105 so that the power supplied from the power system 104 does not exceed the upper limit power when the power generation system 101 is started.
- the sum of the starting power of the power generation system 101 and the power consumption of the external power load 105 exceeds the upper limit power maintained at the unit price of the relatively low electricity rate, and is changed to the unit price of the relatively high electricity rate. This case will be described with reference to FIG.
- FIG. 2 is a table schematically showing an example of an electricity billing system in which the electricity bill fluctuates according to the power used by the consumer.
- the power P used by the consumer is 0 ⁇ P ⁇ P1 [kW], it is set to X1 yen per kW, and if it is up to P1 ⁇ P ⁇ P2 [kW], 1 kW It is assumed that the price is set to X2 yen per round (P1 ⁇ P2 kW and X1 ⁇ X2 yen).
- the electricity bill system is set in this way, it is assumed that the consumer uses the external power load 105 at P0 kW, which is less power than P1 kW. In this case, the electricity charge is X1 yen per kW.
- the activation power of the power generation system 101 (referred to as PakkW) and the power consumption of the external power load 105 (P0 kW) Assume that the total (Pa + P0 kW) exceeds P1 kW.
- the upper power limit (P1 kW in this example) maintained at a relatively low unit price of electricity (in this example, X1 yen) is changed to a relatively high unit price of electricity. Then, it is X2 yen per kW.
- the power generation system 101 includes an internal power load 102 that is a device for operating the power generation system 101 and a controller 103 that controls the power generation system 101.
- the power generation system 101 may have any form as long as it is configured to generate electric power and supply the generated electric power to the external power load 105.
- a gas turbine or a fuel cell system may be used.
- the fuel cell used in the fuel cell system any type of fuel cell may be used, and examples include a polymer electrolyte fuel cell, a solid oxide fuel cell, and a phosphoric acid fuel cell.
- As the internal power load 102 for example, when the power generation system 101 is a fuel cell system, an electric heater for raising the temperature in the fuel cell can be used.
- the controller 103 may be in any form as long as it is a device that controls each device constituting the power generation system 101.
- the controller 103 stores an arithmetic processing unit and a program for executing each control operation.
- a storage unit A storage unit.
- the arithmetic processing unit includes, for example, a microprocessor, a CPU, and the like, and the storage unit includes a memory and the like.
- the power storage unit 107 includes a power controller 108 that controls the power storage unit 107.
- the power storage unit 107 may have any form as long as it is configured to supply power to the power generation system 101 and the external power load 105.
- Secondary batteries As these secondary batteries, assembled batteries in which a plurality of single cells are connected in series may be used, or a plurality of single batteries and / or assembled batteries may be connected in parallel.
- the power controller 108 may be in any form as long as it is a device that controls the output power from the power storage unit 107, and may be configured by, for example, a DC / AC converter.
- the power storage unit 107 has a built-in power detector (not shown) that detects the output power (discharge power) of the power storage unit 107, and the control device 110 is detected by the power detector (not shown). It is comprised so that the output electric power of the electrical storage unit 107 may be acquired.
- the power system 104 is connected to the power generation system 101 and the power storage unit 107 via the wiring 203 at the connection point 109. Further, the power detector 106 is provided on the electric circuit (wiring 203) closer to the power system 104 than the interconnection point 109. The power detector 106 detects a current value supplied to at least one of the external power load 105 and the internal power load 102 of the power generation system 101. The control device 110 is configured to acquire a current value detected by the power detector 106. Examples of the external power load 105 include an electric device used at home.
- the control device 110 includes, for example, an arithmetic processing unit and a storage unit that stores a program for executing each control operation.
- the arithmetic processing unit includes, for example, a microprocessor, a CPU, and the like
- the storage unit includes a memory and the like.
- the predictor 110a is realized by predetermined software stored in the storage unit. When the predictor 110a starts up the power generation system (when the start-up is refrained in the first embodiment), the predictor 110a has a relatively low sum of the start-up power of the power generation system and the power consumption of the external power load. Predict whether or not the upper limit power maintained at the unit price of charge will be changed to a relatively high unit price of electricity charge.
- each apparatus which comprises the power supply system 100 may be controlled as the control apparatus 110, as shown in FIG. 1, the electric power generation system 101 and the electrical storage unit 107 may be sufficient as it.
- the power supply system 101 or the power storage unit 107 may be built in, or the power generation system 101 and the power storage unit 107 may be separately built in. Also good.
- FIG. 3A is a flowchart schematically showing an operation (first control) when starting the power generation system in the power supply system according to the first embodiment.
- the control device 110 acquires the power (power consumption) used by the external power load 105 from the power detector 106 (step S101).
- “when the start-up of the power generation system 101 is refrained” means at least one of when a start-up request for the power generation system 101 is generated and when a start-up schedule is refrained.
- the case where the activation request is generated includes, for example, a case where a preset activation start time of the power generation system 101 is reached, or a case where the user operates the remote controller to instruct the activation start of the power generation system 101. Is mentioned.
- the case where the startup schedule is refrained includes, for example, a case where a preset startup start time of the power generation system 101 is approaching.
- the power detector 106 detects the power consumption of the external power load 105 when a predetermined time (for example, one minute) before the operation start time, and the control device 110 (predictor 110a). ) Predicts whether the sum of the starting power of the power generation system 101 and the power consumption of the external power load 105 exceeds the upper limit power that can be received from the power system 104.
- the predetermined time is set as a time during which the power consumption of the external power load 105 when starting is predictable.
- control device 110 exceeds the upper limit power at which the sum of the starting power of the power generation system 101 and the power consumption of the external power load 105 is maintained at a relatively low unit price of the electricity rate, and is relatively
- the prediction of whether or not the unit price of the electricity rate will be changed to an extremely high price may be in any form as long as it can be predicted whether or not the upper limit power is exceeded. May be performed.
- control device 110 determines whether the sum of the power consumption of the external power load 105 acquired in step S101 and the startup power of the power generation system 101 exceeds the upper limit power P1 that is maintained at a relatively low unit price of the electricity bill. It is determined whether or not (step S102). If the sum of the power consumption and the startup power exceeds the upper limit power P1 (Yes in step S102), the process proceeds to step S103, and if it is equal to or less than the upper limit power P1 (No in step S102), the process proceeds to step S104.
- the starting power means the power required for starting the power generation system 101. Specifically, it is the power consumption of the internal power load 102 when the power generation system 101 is in the start-up operation, and the value is set as appropriate by the devices constituting the internal power load 102.
- the startup power may be, for example, the maximum power consumption of the internal power load 102 during the startup operation of the power generation system 101, or may be the power consumption of the internal power load 102 that operates at the initial startup.
- the upper limit power maintained at a relatively low unit price of the electricity bill is determined as P1, but the present invention is not limited to this.
- the unit price X2 of the electricity charge corresponds to a relatively low electricity charge.
- the upper limit electric power maintained at the unit price of a relatively low electric bill becomes P2.
- the unit price of the relatively high electricity charge is X3 yen. That is, the upper limit power that is maintained at a relatively low unit price of the electricity rate varies depending on the power usage P of the consumer (the power usage P of the external power load 105).
- step S ⁇ b> 103 the control device 110 controls the power controller 108 of the power storage unit 107 to output power from the power storage unit 107.
- the power controller 108 supplies power from the power storage unit 107 to the external power load 105 and the power generation system 101 (specifically, the internal power load 102).
- the power controller 108 subtracts the power supplied to the external power load 105 and / or the power generation system 101 from the power obtained by adding the power consumption of the external power load 105 and the starting power of the power generation system 101 (that is, power consumption).
- the power storage unit 107 is controlled such that (power + startup power-supply power) is equal to or lower than the upper limit power P1.
- control device 110 proceeds to step S104 and outputs a start permission signal (start command signal) of the power generation system 101 to the controller 103.
- start command signal a start permission signal of the power generation system 101
- controller 103 starts activation of the power generation system 101.
- the power supply system 100 consumes a large amount of power in the external power load 105, and when the power generation system 101 is activated, the electricity charge is relatively low. Even if there is a possibility of exceeding the upper limit power (upper limit power P1 in this case) maintained at the unit price, the start-up of the power generation system 101 can be started while suppressing an increase in the unit price of the power charge. It becomes possible. Thereby, in the electric power supply system 100 (control apparatus 110 of the electric power supply system 100) which concerns on this Embodiment 1, a low electricity bill can be maintained, improving the starting property of the electric power generation system 101.
- the power supply from the power generation system 101 to the external power load 105 is stopped. For this reason, when the electricity bill system shown in FIG. 2 is adopted, when the power consumption of the external power load 105 is large, the power generation of the power generation system 101 is stopped to maintain a relatively low unit price of the electricity bill. If the power consumption is changed to a unit price of a relatively high electric charge exceeding the upper limit electric power to be used, the consumer will be disadvantaged.
- the control device 110 stops the power generation of the power generation system 101, the power supplied from the power system 104 is relatively low.
- the power of the power storage unit 107 is controlled so as to be supplied to at least one of the power generation system 101 and the external power load 105 so as not to exceed the upper limit power maintained in the above.
- FIG. 3B is an example of a flowchart schematically showing an operation when power generation of the power generation system in the power supply system according to Embodiment 1 is stopped.
- the control device 110 acquires the power (power consumption) used by the external power load 105 from the power detector 106 (step S101B).
- the time when the power generation system 101 is suspending power generation means at least one of the time when a power generation system stop request is generated and the time when power generation is scheduled to be stopped.
- the power generation system stop request is generated, for example, when the power generation stop start time of the power generation system set in advance is reached or the user operates the remote controller to instruct the power generation stop of the power generation system 101 Such a case is mentioned.
- the case where the power generation stop schedule is refrained includes, for example, a case where a preset power generation stop time of the power generation system is approaching.
- control device 110 determines whether or not the sum of the power consumption of the external power load 105 acquired in step S101B and the stop power of the power generation system 101 exceeds the usable upper limit power P1B from the power system 104. (Ie, predict) (step S102B). If the sum of the power consumption and the starting power exceeds the upper limit power P1B (Yes in step S102B), the process proceeds to step S103B, and if it is equal to or lower than the upper limit power P1B (No in step S102B), the process proceeds to step S104B.
- the stop electric power means electric power necessary for the processing operation after the electric power generation system 101 stops generating electric power. Specifically, it is the power consumption of the internal power load 102 that operates in the processing operation after the power generation stop of the power generation system 101, and the value is appropriately set.
- the stop power may be, for example, the maximum power consumption of the internal power load 102 in the processing operation after the power generation stop of the power generation system 101.
- the processing operation after the power generation stop of the power generation system 101 can arbitrarily adopt the processing operation after the power generation stop of the known power generation system 101.
- step S103B the control device 110 controls the power controller 108 to output power from the power storage unit 107.
- the power storage unit 107 supplies power to the external power load 105 and the power generation system 101 (specifically, the internal power load 102) by the power controller 108.
- the power controller 108 subtracts the power supplied to the external power load 105 and the power generation system 101 from the power obtained by adding the power consumption of the external power load 105 and the stop power of the power generation system 101 (that is, power consumption).
- the output power of the power storage unit 107 is controlled such that (+ stop power ⁇ supply power) is equal to or less than the upper limit power P1.
- the power controller 108 may control the power storage unit 107 to supply power to at least the external power load 105.
- control device 110 proceeds to step S104B, and outputs a signal (power generation stop command signal) for permitting the power generation system 101 to stop power generation to the controller 103.
- the controller 103 starts the power generation stop of the power generation system 101. Specifically, the supply of power from the power generation system 101 to the external power load 105 is stopped, and the power generation system 101 stops power generation. Thereafter, the operation of each device constituting the power generation system 101 is stopped (processing operation after the power generation system 101 stops generating power).
- the power supply system 100 according to the first embodiment and the control device 110 of the power supply system 100 consume a large amount of power from the external power load 105, and when the operation of the power generation system 101 is stopped, Even if it is predicted that the upper limit power P1 will be exceeded, it is possible to start the power generation stop of the power generation system 101.
- control device 119 In the power supply system 100, the control operation to the power storage unit 107 when the control device 110 starts the power generation system 101 and stops the power generation of the power generation system 101 has been described.
- the control device 119 In the first power supply system 100, the control device 119 only needs to be configured to execute at least one of these control operations (first control and second control). That is, the control device 110 may be configured to execute only one of the first control and the second control, or may be configured to execute both the first control and the second control. May be.
- the power supply system of the first modification exemplifies a mode in which the power generation system is a fuel cell system.
- FIG. 4A is an example of a block diagram schematically showing a schematic configuration of the power generation system of Modification 1 in the power supply system according to Embodiment 1.
- FIG. 4A is an example of a block diagram schematically showing a schematic configuration of the power generation system of Modification 1 in the power supply system according to Embodiment 1.
- the power generation system 101 of Modification 1 is a fuel cell system, and an electric heater for raising the temperature of components constituting the fuel cell system when the fuel cell system is started is used as an internal power load.
- the power generation system (fuel cell system) 101 of the first modification includes a hydrogen generator 11, an oxidant gas supplier 12, a fuel cell 13, a cooling medium tank 14, an electric heater 15, A cooling medium feeder 16 and a controller 103 are provided.
- the hydrogen generator 11 includes a reformer 1, a CO reducer 2, and an electric heater 3, generates hydrogen-rich fuel gas, and supplies the generated fuel gas to the fuel cell 13. It is configured.
- the reformer 1 has a reforming catalyst, and generates a hydrogen-containing gas by performing a reforming reaction between a raw material and water.
- the raw material should just be a thing which can produce
- the raw material for example, a material containing an organic compound containing at least carbon and hydrogen as constituent elements, such as a hydrocarbon such as ethane or propane, or an alcohol-based raw material such as methanol can be used.
- the CO reducer 2 is configured to reduce carbon monoxide in the hydrogen-containing gas generated by the reformer 1.
- Examples of the CO reducer 2 include a converter that reduces carbon monoxide by a shift reaction and a CO remover that reduces by an oxidation reaction or a methanation reaction.
- the electric heater 3 is configured to raise the temperature of the CO reducer 2, for example, when the fuel cell system is started. Note that the electric heater 3 may be configured not only to raise the temperature of the CO reducer 2 but also to raise the temperature of the reformer 1, or to raise only the temperature of the reformer 1. May be.
- the hydrogen-containing gas whose carbon monoxide has been reduced by the CO reducer 2 is supplied as a fuel gas to the anode of the fuel cell 13 via the fuel gas supply path 31.
- the carbon monoxide in the hydrogen-containing gas generated by the reformer 1 is reduced by the CO reducer 2 and supplied to the fuel cell 13.
- the present invention is not limited to this.
- a form without the CO reducer 2 may be adopted.
- the electric heater 3 may be configured to raise the temperature of the reformer 1 or may not be provided.
- the fuel cell system 101 includes an oxidant gas supply path 32 through which an oxidant gas flows and an oxidant gas supply device 12 for supplying the oxidant gas.
- an oxidant gas supply device 12 for example, fans such as a blower and a sirocco fan can be used.
- the oxidant gas (for example, air) supplied from the oxidant gas supply device 12 is supplied to the cathode of the fuel cell 13.
- the fuel gas supplied to the anode and the oxidant gas supplied to the cathode react electrochemically to generate electricity and heat.
- the fuel cell may be of any type, and examples include a polymer electrolyte fuel cell, a solid oxide fuel cell, and a phosphoric acid fuel cell.
- the fuel cell system 101 is not provided with the CO reducer 2 so that the reformer 1 and the fuel cell 13 are built in one container. Composed.
- the fuel cell system 101 includes a cooling medium path 33, a cooling medium tank 14, an electric heater 15, and a cooling medium feeder 16.
- the cooling medium path 33 is a path through which the cooling medium that recovers the heat generated by the fuel cell 13 flows.
- the cooling medium tank 14 is a tank that is provided in the cooling medium path 33 and stores the cooling medium.
- the electric heater 15 heats the cooling medium in the cooling medium path 33 and may be provided at any location as long as it is on the cooling medium path 33. For example, as shown in FIG. 4A, the electric heater 15 may be provided on the cooling medium path 33 outside the fuel cell 13 and outside the cooling medium tank 14, or may be provided in the cooling medium tank 14.
- the electric heater 15 operates at the time of starting the fuel cell system, heats the cooling medium, and the heated cooling medium circulates through the cooling medium path 33, whereby the temperature of the fuel cell 13 is increased.
- the cooling medium delivery device 16 is a device for circulating the cooling medium in the cooling medium path 33, and for example, a pump can be used.
- a pump can be used.
- water, an antifreeze liquid (for example, ethylene glycol containing liquid) etc. can be used as a cooling medium.
- the control operation (first operation) to the power storage unit 107 is performed in the same manner as the power supply system 100 according to the first embodiment. Control) is executed. Therefore, the power supply system 100 according to the first modification has the same effects as the power supply system 100 according to the first embodiment.
- the electric heater 15 in the start-up operation, is configured to raise the temperature of the devices constituting the fuel cell system 101, so the start-up power is increased.
- the effect of improving the startability obtained by the control of the control device 110 of the power supply system 100 is particularly remarkable as compared with the conventional power generation system.
- the electric heater 3 and the electric heater 15 are provided as electric heaters for raising the temperature of the constituent devices of the fuel cell system at the time of startup, but the present invention is not limited to this. Absent.
- the fuel cell system 101 may be provided with one of the electric heater 3 and the electric heater 15 or may be provided with other electric heaters.
- various known processing operations can be adopted as processing operations after the power generation stop of the fuel cell system 101 in the power supply system 100 of the first modification.
- the processing operation after the power generation stop of the fuel cell system 101 for example, the cooling medium circulation operation by the cooling medium delivery device 16 in the cooling medium path 33, the inside of the hydrogen generator 11 by the raw material gas supply device (not shown), and the like.
- the raw material gas purge operation for at least one of the gas flow path and the gas flow path in the fuel cell 13 and the operation of the electric heater 15 can be exemplified.
- the electric heater 15 may be operated in the circulation operation of the cooling medium.
- the power supply system 100 according to the first modification configured as described above controls the power storage unit 107 when the power generation system 101 is stopped, as with the power supply system 100 according to the first embodiment (second operation). Control) is executed. Therefore, the power supply system 100 according to the first modification has the same effects as the power supply system 100 according to the first embodiment.
- the stop power becomes large.
- the effect of improving the stopping performance obtained by the control of the control device 110 of the power supply system 100 is particularly remarkable as compared with the conventional power generation system.
- the power supply system 100 includes a control device 110 that controls the power storage unit 107 when the power generation system 101 is activated and controls the power storage unit 107 when the power generation system 101 stops power generation. It may be configured to execute at least one of the operations.
- the control device 110 is configured to execute only one of the control operation for the power storage unit 107 when starting the power generation system 101 and the control operation for the power storage unit 107 when stopping power generation of the power generation system 101.
- the control operation for the power storage unit 107 when the power generation system 101 is started up and the control operation for the power storage unit 107 when the power generation of the power generation system 101 is stopped may be performed together. Good.
- Modification 2 The power supply system of Modification 2 illustrates another aspect in which the power generation system is a fuel cell system.
- FIG. 4B is an example of a block diagram schematically showing a schematic configuration of the power generation system of Modification 2 in the power supply system according to Embodiment 1. As shown in FIG.
- the power generation system 101 of the second modification has the same basic configuration as the fuel cell system of the first modification, but further includes a recovered water tank 17 and a transmitter 18. Different.
- the electric heater 15 may be provided in the recovered water tank 17.
- the recovered water tank 17 is a tank that stores water recovered from the exhaust gas discharged from the fuel cell system 101.
- the exhaust gas may be any exhaust gas.
- at least one of the fuel gas and the oxidant gas discharged from the fuel cell 13 or the combustion exhaust gas discharged from the combustor that heats the reformer 1 Etc. are exemplified.
- the fuel cell system 101 is provided with a circulation path 34 that connects the cooling medium tank 14 and the recovered water tank 17. Therefore, in this example, water is used as the cooling medium, and the circulation path 34 is configured so that the cooling water in the cooling medium tank 14 and the recovered water in the recovered water tank 17 circulate. Further, in the middle of the circulation path 34, a delivery device 18 for delivering water in the circulation path 34 is provided. As the delivery device 18, for example, a pump can be used.
- the cooling medium path 33 is not a flow path through which the cooling medium for cooling the fuel cell 13 flows, but combustion obtained by burning the fuel gas discharged from the fuel cell 13 It is configured as a flow path through which a cooling medium for cooling the exhaust gas flows.
- the processing operation after power generation stop of the fuel cell system 101 includes, for example, the cooling medium circulation operation in the cooling medium path 33 by the cooling medium delivery device 16, and the cooling medium tank 14 and the recovered water tank 17 by the delivery device 18.
- the electric heater 15 may be operated in at least one of the cooling medium circulation operation and the water circulation operation between the cooling medium tank 14 and the recovered water tank 14.
- the power supply system 100 of the second modification configured as described above controls the power storage unit 107 at the time of starting and stopping the power generation system 101, similarly to the power supply system of the first embodiment. Operations (first control and second control) are performed. Therefore, even if the power supply system 100 according to the second modification is similar to the power supply system 100 according to the first embodiment, the same effects as the power supply system 100 according to the second modification can be obtained.
- the power supply system 100 has the control device 110 controlling the power storage unit 107 when starting the fuel cell system 101 and the power storage unit 107 when stopping the power generation of the fuel cell system 101. It is only necessary to be configured to execute at least one of the control operations. That is, the control device 110 executes only one of the control operation for the power storage unit 107 when starting the fuel cell system 101 and the control operation for the power storage unit 107 when stopping the power generation of the fuel cell system 101.
- the control operation to the power storage unit 107 when starting the fuel cell system 101 and the control operation to the power storage unit 107 when stopping the power generation of the fuel cell system 101 may be executed together. May be.
- the power supply system of the third modification includes a determiner that determines cost merit information obtained by the control device executing at least one of the first control and the second control, and the determiner And an external output device for outputting the cost merit information determined by the outside.
- the power supply system according to the third modification may further include a display configured to display the cost merit information output by the external output device.
- FIG. 4C is an example of a block diagram schematically showing a schematic configuration of the power supply system of Modification Example 2 in the power supply system according to Embodiment 1.
- the control device 110 includes a determiner 110b and an external output device 110c.
- the determiner 110b is configured to determine cost merit information obtained by executing at least one of the first control and the second control.
- the external output device 110c is configured to output the cost merit information determined by the determiner 110b to the outside.
- the cost merit information is obtained when at least one of the first control and the second control is executed, compared to when neither the first control nor the second control is executed. It is information indicating cost merit.
- the determiner 110b is realized by the arithmetic processing unit executing predetermined software stored in the storage unit of the control device 110.
- the determiner 110b may determine cost merit information obtained by executing at least one of the first control and the second control from the table of the electricity bill system shown in FIG.
- the unit price of the electricity rate is relatively low (for example, X1 yen), but when the above control is not executed, There are cases where the upper limit power (in this example, P1 kW) is exceeded and the unit price of the relatively high electricity rate (in this example, X2 yen) is obtained.
- the determiner 110b may determine X2-X1 yen / kW as cost merit information obtained by executing at least one of the first control and the second control. Good.
- the determiner 110b is configured to execute the above control and the unit price of the relatively low electricity rate (in this example, X1 yen) and the case where the above control is not executed.
- a relatively high unit price of electricity charges in this example, X2 yen may be determined as cost merit information.
- the external output device 110c may be in any form as long as it is configured to output the cost merit information determined by the determiner 110b to the outside.
- a wireless LAN or the like can be used.
- the external output device 110c may be configured to output information such as the power generation amount of the power generation system 101, the output and / or power storage amount of the power storage unit 107, and the power consumption of the external power load 106 to the outside.
- the power supply system 100 includes a display 111.
- the display device 111 may have any form as long as it can display information (character data, image data, etc.) output from the external output device 110b.
- a remote controller or the like can be used.
- the information output from the external output device 110b is not limited to the display device 111 provided in the power supply system 100, and may be configured to be displayed on a display device outside the power system 100 (not shown). Examples of such an external display device include a mobile phone, a smartphone, and a tablet computer.
- the specific cost merit information displayed on the display 111 will be described. For example, when X2 ⁇ X1 yen / kW is determined as cost merit information by the determiner 110b, “X2-X1 yen / kW electricity charge is reduced” is displayed on the display 111. Further, for example, as the cost merit information in the determiner 110b, the unit price of the relatively low electricity rate (X1 yen in this example) maintained by executing the above control and the relative value when the above control is not executed. Therefore, the unit price of the electricity charge (in this example, X2 yen) is determined. At this time, “Low-cost operation, the unit price of electricity charge is X1 yen / kW. If this operation is not executed, the unit price of electricity charge will be X2 yen / kW.” Is displayed on the display 111.
- the cost merit information in the determiner 110b the unit price of the relatively low electricity rate (X1 yen in this example) maintained by executing the above control and the relative
- the power supply system 100 of the third modification configured as described above controls the power storage unit 107 at the time of starting and stopping the power generation system 101, similarly to the power supply system of the first embodiment. Operations (first control and second control) are performed. Therefore, the power supply system 100 according to the third modification has the same effects as the power supply system 100 according to the first embodiment.
- the determiner 110b determines the cost merit information, the external output device 110c, the determiner 110b The determined cost merit information is output to the display unit 111. Thereby, energy conservation awareness is evoked by the user of the power generation system 101.
- the power supply system 100 includes a control device 110 that controls the power storage unit 107 when the power generation system 101 is activated and controls the power storage unit 107 when the power generation system 101 stops power generation. It may be configured to execute at least one of the operations.
- the control device 110 is configured to execute only one of the control operation for the power storage unit 107 when starting the power generation system 101 and the control operation for the power storage unit 107 when stopping power generation of the power generation system 101.
- the control operation for the power storage unit 107 when the power generation system 101 is started up and the control operation for the power storage unit 107 when the power generation of the power generation system 101 is stopped may be performed together. Good.
- the power supply system according to the second embodiment is configured such that the control device determines whether or not to start the power generation system based on the power that can be supplied from the power storage unit.
- based on the power that can be supplied from the power storage unit means that the power obtained by subtracting the power that can be supplied by the power storage unit from the power obtained by adding the power consumption of the external power load and the starting power of the power generation system is It is based on whether it is below the upper limit power maintained at a unit price of a low electricity rate.
- control device may be configured to determine whether to stop the power generation of the power generation system based on the power that can be supplied from the power storage unit.
- the power supply system 100 according to the second embodiment has the same basic configuration as the power supply system 100 according to the first embodiment, the description of the configuration is omitted.
- FIG. 5A is a flowchart schematically showing an operation when starting the power generation system in the power supply system according to the second embodiment.
- the control device 110 is used by the external power load 105 from the power detector 106 when the power generation system 101 is refraining from starting, as in the power supply system 100 according to the first embodiment.
- the obtained power (power consumption) is acquired (step S201).
- the control device 110 sets the upper limit power (here, the sum of the power consumption of the external power load 105 acquired in step S201 and the startup power of the power generation system 101 at a relatively low unit price of the electricity bill (here, It is determined whether or not the upper limit power P1) is exceeded (step S202). If the sum of the power consumption and the starting power exceeds the upper limit power P1 (Yes in step S202), the process proceeds to step S203, and if it is equal to or lower than the upper limit power P1 (No in step S202), the process proceeds to step S205.
- the upper limit power here, the sum of the power consumption of the external power load 105 acquired in step S201 and the startup power of the power generation system 101 at a relatively low unit price of the electricity bill.
- step S203 the control device 110 subtracts the power that can be supplied by the power storage unit 107 from the power obtained by adding the power consumption of the external power load 105 and the startup power of the power generation system 101 (that is, power consumption + startup power ⁇ It is determined whether or not (suppliable power) is equal to or lower than the upper limit power (here, the upper limit power P1) maintained at a relatively low unit price of the electricity bill.
- “based on the power that can be supplied from the power storage unit” means the power obtained by subtracting the power that can be supplied by the power storage unit 107 from the power obtained by adding the power consumption of the external power load 105 and the startup power of the power generation system 101. It is based on whether the power is below the upper limit power maintained at a relatively low unit price of electricity.
- the control device 110 sends power from the power storage unit 107 to the power controller 108. (Step S204). As a result, the power storage unit 107 supplies power to the external power load 105 and the power generation system 101 after start-up by the power controller 108.
- the power controller 108 subtracts the power supplied to the external power load 105 and / or the power generation system 101 from the power obtained by adding the power consumption of the external power load 105 and the startup power of the power generation system 101 (that is, The power storage unit 107 is controlled such that (power consumption + startup power-supply power) is equal to or less than the upper limit power P1.
- control device 110 proceeds to step S205, and outputs a start permission signal for the power generation system 101 to the controller 103.
- the controller 103 starts activation of the power generation system 101.
- step S206 the control device 110 rejects activation of the power generation system 101 and outputs a start rejection signal to the controller 103 or does not output a start permission signal so as not to start the power generation system 101.
- the control device 110 is configured to notify the user that the power generation system 101 cannot be activated. Examples of the notification method include displaying an error on a remote controller and generating a warning sound indicating an error.
- the power supply system 100 (control device 110 of the power supply system 100) according to the second embodiment configured in this way is the power supply system 100 (control device of the power supply system 100) according to the first embodiment. 110).
- the power generation system 101 is activated when the output power from the power storage unit 107 cannot be lower than the upper limit power P1. Therefore, the start operation of the power generation system 101 is prevented from being interrupted. That is, the power supply system 100 according to the second embodiment (the control device 110 of the power supply system 100) is more activated than the power supply system 100 according to the first embodiment (the control device 110 of the power supply system 100).
- the power supply system 100 according to the second embodiment the control device 110 of the power supply system 100
- the control device 110 of the power supply system 100 is more activated than the power supply system 100 according to the first embodiment (the control device 110 of the power supply system 100).
- the power obtained by subtracting the suppliable power from the power obtained by adding the power consumption and the starting power is larger than the upper limit power P1.
- the power generation system 101 is refused to start, and Step S206 is performed.
- the present invention is not limited to this, and in the case of No in Step S203, the process returns to Step S201, and from Step S201 You may employ
- FIG. 5B is an example of a flowchart schematically illustrating an operation when power generation of the power generation system in the power supply system according to Embodiment 2 is stopped.
- step S203B and step S206B the step in which the operation
- control device 110 subtracts power that can be supplied by power storage unit 107 from power obtained by adding power consumption of external power load 105 and stop power of power generation system 101 (that is, power consumption + stop power ⁇ It is determined whether or not (suppliable power) is equal to or lower than the upper limit power (here, the upper limit power P1) maintained at a relatively low unit price of the electricity bill.
- step S ⁇ b> 206 ⁇ / b> B the control device 110 rejects the power generation stop of the power generation system 101 and outputs a signal rejecting the power generation stop to the controller 103 or does not output a signal permitting the power generation stop. To prevent power generation from stopping. In this case, it is preferable that the control device 110 is configured to notify the user that power generation of the power generation system 101 cannot be stopped.
- step S206B If the power generation stop of the power generation system 101 is rejected in step S206B, the flow returns to step S201B, and the above-described flow is repeatedly executed until the power generation of the power generation system 101 is stopped in step S205B (that is, the power generation of the power generation system 101). May be employed.
- the control device 110 of the power supply system 100 when the output power from the power storage unit 107 can reduce the upper limit power P1 or less, the power generation system Since the power generation of 101 is stopped and the subsequent processing operation is executed, the stopping performance is further improved as compared with the power supply system 100 according to the first embodiment (the control device 110 of the power supply system 100).
- the power supply system 100 has the control device 110 controlling the power storage unit 107 when starting the power generation system 101 and the power storage unit 107 when stopping the power generation of the power generation system 101. It is only necessary to be configured to execute at least one of the control operations. In other words, the control device 110 is configured to execute only one of the control operation for the power storage unit 107 when starting the power generation system 101 and the control operation for the power storage unit 107 when stopping power generation of the power generation system 101.
- the control operation for the power storage unit 107 when the power generation system 101 is started up and the control operation for the power storage unit 107 when the power generation of the power generation system 101 is stopped may be performed together. Good.
- the first control for controlling to supply to at least one of the system and the external power load, and when the power generation of the power generation system is stopped, the sum of the stop power of the power generation system and the power consumption of the external power load is If it is predicted that the power supply will be changed to a relatively high unit price that exceeds the upper limit power that is maintained at a relatively low unit price, the power supplied from the power grid will So as not to exceed the force, a second control for controlling to supply to at least one of the power of the power storage unit generation system and the external electrical load, and is configured to perform at least one of.
- the case where “when the power generation system is activated” is when the power generation system is activated is described.
- a case where “when the power generation system stops” is when the processing operation after the power generation stop of the power generation system is performed.
- the upper limit power at which the sum of the start power of the power generation system and the power consumption of the external power load is maintained at a relatively low unit price of the electric charge is set.
- the prediction of whether or not the unit price is changed to a relatively high unit price is performed as follows.
- the power detector detects the power consumption of the power generation system and the external power load when the power generation system is starting up, and the control device consumes the power generation system and the external power load detected by the power detector.
- the sum of electricity exceeds the upper limit power maintained at the unit price of the relatively low electricity rate, and the unit price of the relatively high electricity rate This is done by judging whether or not it is changed.
- the sum of the starting power of the power generation system and the power consumption of the external power load is maintained at a relatively low unit price of the electric charge from the power system. Prediction of whether or not the upper limit power is exceeded is performed as follows.
- the power detector detects the power consumption of the power generation system and the external power load when the processing operation of the power generation system is stopped
- the control device detects the power generation system detected by the power detector and the external Whether the sum of the power consumption of the power load (the sum of the stop power of the power generation system and the power consumption of the external power load) exceeds the upper limit power that is maintained at a relatively low unit price of electricity from the power grid It is done by judging.
- the power consumption of the power generation system is specifically the power consumption of the internal power load of the power generation system.
- the prediction by the control device whether the sum of the starting power of the power generation system and the power consumption of the external power load exceeds the upper limit power maintained at the unit price of the relatively low electricity rate is, for example, the internal power load And may be predicted based on the increase in power consumption of the external power load, or may be predicted from past usage history, exceeding the upper limit power maintained at a relatively low unit price of electricity charges Any mode may be used as long as it can be predicted.
- the prediction by the control device whether the sum of the stop power of the power generation system and the power consumption of the external power load exceeds the upper limit power maintained at the unit price of the relatively low electricity rate is, for example, internal power Prediction may be performed based on the amount of increase in power consumption of the load and external power load, or prediction may be performed from past usage history, and if it can be predicted whether or not the upper limit power is exceeded, Any aspect may be sufficient.
- FIG. 6A is a flowchart schematically showing an operation when the power generation system in the power supply system according to Embodiment 3 is started.
- the control device 110 starts from the power detector 106 to the power generation system 101 (specifically, the internal power load 102), as shown in FIG.
- the power (power consumption) used by the external power load 105 is acquired (step S301).
- the control device 110 determines whether or not the sum of the power consumption of the external power load 105 acquired in step S301 and the power consumption of the power generation system 101 is equal to or higher than the upper limit power P1A (step S302). If the sum of the power consumption and the starting power is equal to or higher than the upper limit power P1A (Yes in step S302), the process proceeds to step S303, and if it is smaller than the upper limit power P1A (No in step S302), the process proceeds to step S304.
- the upper limit power P1A is lower than the upper limit power (here, the upper limit power P1) maintained at a relatively low unit price of electricity from the viewpoint of not interrupting (continuing) the start-up operation of the power generation system 101. It is preferable that it can be set arbitrarily.
- step S303 the control device 110 controls the power controller 108 of the power storage unit 107 to output power from the power storage unit 107.
- the power controller 108 supplies power from the power storage unit 107 to the external power load 105 and the power generation system 101 (specifically, the internal power load 102).
- the power controller 108 controls the power storage unit 107 so that the power used by the power generation system 101 and the external power load 105 detected by the power detector 106 is less than the upper limit power P1A.
- control device 110 proceeds to step S304, and outputs a startup continuation signal of the power generation system 101 to the controller 103. Thereby, the controller 103 continues the activation of the power generation system 101.
- the external power load 105 is started after the power generation system 101 is started (before the power generation system 101 is started). Even if the power consumption of the external power load 105 is large and is expected to exceed the upper limit power P1 maintained at a relatively low unit price of the electricity bill. The startup operation of the system 101 can be continued. Thereby, in 100 (control device 110 of power supply system 100) according to the third embodiment, it is possible to maintain a low electricity bill while improving the startability as compared with the conventional power generation system.
- the upper limit power P1A is set as the threshold value in step S302 from the viewpoint of continuing the start-up operation more stably, but the present invention is not limited thereto. You may set the upper limit electric power P1 as a threshold value of step S302.
- FIG. 6B is an example of a flowchart schematically showing an operation when power generation of the power generation system is stopped in the power supply system according to Embodiment 3.
- the control device 110 receives the power generation system 101 (from the power detector 106 as shown in FIG. 6B. Specifically, the power (power consumption) used by the internal power load 102) and the external power load 105 is acquired (step S301B).
- control device 110 determines whether or not the sum of the power consumption of the external power load 105 acquired in step S301B and the power consumption of the power generation system 101 exceeds the upper limit power P1B (step S302B). If the sum of the power consumption and the starting power is equal to or higher than the upper limit power P1B (Yes in step S302B), the process proceeds to step S303B, and if it is less than the upper limit power P1B (No in step S302B), the process proceeds to step S304B. .
- the upper limit power P1B is the upper limit power (here, the upper limit power P1) that is maintained at a relatively low unit price of electricity from the viewpoint of not interrupting (continuing) the processing operation after the power generation system 101 stops generating power. It is preferable that the power is lower than that, and can be arbitrarily set.
- step S303B the control device 110 controls the power controller 108 of the power storage unit 107 to output power from the power storage unit 107.
- the power controller 108 supplies power from the power storage unit 107 to the external power load 105 and the power generation system 101 (specifically, the internal power load 102).
- the power controller 108 controls the power storage unit 107 so that the power used by the power generation system 101 and the external power load 105 detected by the power detector 106 is less than the upper limit power P1B.
- the power controller 108 may control the power storage unit 107 to supply power to at least the external power load 105.
- control device 110 proceeds to step S304B, and outputs a signal for continuing the processing operation after the power generation stop of the power generation system 101 to the controller 103.
- controller 103 continues the processing operation after the power generation system 101 stops generating power.
- the power consumption of the external power load 105 increases in the processing operation after the power generation system 101 stops generating power. Even in the case where it is predicted that the upper limit power P1B will be exceeded, the processing operation of the power generation system 101 after the power generation is stopped can be continued.
- control device 110 of power supply system 100 control device 110 of power supply system 100
- Embodiment 3 the upper limit power that is maintained at a unit price of a relatively low electricity rate as compared with the conventional power generation system.
- the processing operation after the power generation stop of the power generation system 101 can be executed while suppressing exceeding.
- the upper limit power P1B is set as the threshold value in step S302B from the viewpoint of more stably continuing the processing operation after the power generation stop of the power generation system 101.
- the upper limit power P1 may be set as the threshold value in step S302B.
- the power supply system 100 is configured such that the control device 110 controls the power storage unit 107 when the power generation system 101 is activated and the power storage unit 107 when the power generation system 101 stops power generation. It is only necessary to be configured to execute at least one of the control operations. In other words, the control device 110 is configured to execute only one of the control operation for the power storage unit 107 when starting the power generation system 101 and the control operation for the power storage unit 107 when stopping power generation of the power generation system 101. The control operation for the power storage unit 107 when the power generation system 101 is started up and the control operation for the power storage unit 107 when the power generation of the power generation system 101 is stopped may be performed together. Good.
- the upper limit power at which the control device maintains the unit price of the electricity rate at which the power consumption of the external power load is relatively low before the scheduled power generation stop time of the power generation system In the following cases, the power storage unit may be charged from at least one of the power system and the power generation system.
- FIG. 7A is a flowchart schematically showing an operation when the power generation system in the power supply system according to Embodiment 4 is started.
- the control device 110 acquires the scheduled activation time (step S401). Specifically, the control device 110 acquires scheduled start time information from the controller 103.
- the control device 110 calculates a standby time from the scheduled activation time acquired in step S401 to the scheduled activation time, and whether or not the calculated waiting time is equal to or less than a predetermined time T1. Is determined (step S402).
- the predetermined time T1 is an arbitrarily set time, but before the necessity determination of the power supply from the power storage unit 107 executed in the first to third embodiments (including the modification) is performed. It is preferable that the charging control for the power storage unit 107 is performed.
- Step S402 When the standby time is longer than the predetermined time T1 (No in Step S402), the control device 110 returns to Step S401 and repeats Step S401 and Step S402 until the standby time becomes equal to or shorter than the predetermined time T1. On the other hand, when the standby time becomes equal to or shorter than the predetermined time T1 (Yes in Step S402), the control device 110 proceeds to Step S403.
- step S403 the control device 110 outputs a control signal so as to charge the power controller 108 of the power storage unit 107.
- the power controller 108 supplies power from the power system 104 to the storage battery cells or the assembled battery constituting the power storage unit 107 to charge the power storage unit 107.
- charging of the power storage unit 107 is performed by, for example, placing a capacitor in the power storage unit 107, storing the power from the power system 104 with the capacitor, and supplying the stored power to the unit cell or the assembled battery. Then, charging may be performed.
- the control shown in the flow of steps S401 to S403 may be applied to any power supply system 100 (control device 110 of the power supply system 100) of the first to third embodiments (including the modified example). Absent.
- control device 110 determines whether or not power output from power storage unit 107 is executed in any of Embodiments 1 to 3 (including modifications). If the activation is permitted, the activation of the power generation system 101 is started (step S404).
- the power supply system 100 (control device 110 of the power supply system 100) according to the fourth embodiment configured as described above, while suppressing exceeding the upper limit power maintained at a relatively low unit price of the electricity bill. Since the power storage unit 107 is charged before starting the power generation system 101, the power replenishment power from the power storage unit 107 is improved. Therefore, the startability of the power generation system 101 can be further improved.
- FIG. 7B is an example of a flowchart schematically showing an operation when power generation of the power generation system is stopped in the power supply system according to the fourth embodiment.
- the control device 110 acquires the scheduled power generation stop time of the power generation system 101 (step S401B). Specifically, the control device 110 acquires the scheduled power generation stop time information from the controller 103.
- the control device 110 calculates the time from the scheduled power generation stop time acquired in step S401B to the scheduled power generation stop time from the current time, and the calculated time (hereinafter referred to as “calculated time”) is a predetermined time. It is determined whether it is T1B or less (step S402B).
- the predetermined time T1B is an arbitrarily set time, but before the necessity determination of the replenishment of power from the power storage unit 107 performed in the first to third embodiments (including the modification) is performed. It is preferable that the charging control for the power storage unit 107 is performed.
- step S402B When the calculation time is longer than the predetermined time T1B (No in step S402B), the control device 110 returns to step S401B and repeats step S401B and step S402B until the calculation time becomes equal to or less than the predetermined time T1B. On the other hand, when the calculation time becomes equal to or shorter than the predetermined time T1B (Yes in step S402B), control device 110 proceeds to step S403B.
- step S403B the control device 110 outputs a control signal so as to charge the power controller 108 of the power storage unit 107.
- the power controller 108 supplies power from at least one of the power system 104 and the power generation system 101 to the storage battery cells or the assembled battery constituting the power storage unit 107 to charge the power storage unit 107.
- the control shown in the flow of steps S401B to S403B may be applied to any power supply system 100 (control device 110 of power supply system 100) in the first to third embodiments (including the modification). Absent.
- the control device 110 performs power from the power storage unit 107 that is executed in any of Embodiments 1 to 3 (including modifications). If it is determined whether or not output is necessary and whether or not to stop the power generation of the power generation system 101 is permitted, and the stop of the power generation is permitted, the power generation system 101 stops the power generation (step S404B).
- the power storage unit 107 is charged before starting the power generation stop of the power generation system 101. Since the power replenishment power from 107 is improved, the stopping performance is further improved as compared with the conventional power generation system.
- the power supply system 100 has the control device 110 control to the power storage unit 107 when starting the power generation system 101 and the power storage unit 107 when stopping power generation of the power generation system 101. It is only necessary to be configured to execute at least one of the control operations. In other words, the control device 110 is configured to execute only one of the control operation for the power storage unit 107 when starting the power generation system 101 and the control operation for the power storage unit 107 when stopping power generation of the power generation system 101.
- the control operation for the power storage unit 107 when the power generation system 101 is started up and the control operation for the power storage unit 107 when the power generation of the power generation system 101 is stopped may be performed together. Good.
- Embodiment 5 By the way, in the power supply system 100 according to Embodiments 1 to 4 (including the modified examples), when the power generation system 101 is started, the internal power load and the external power load are output when power is output from the power storage unit 107. Both are configured to be supplied with power.
- the power supply system according to Embodiment 5 exemplifies a configuration in which the output power from the power storage unit is configured to be supplied to at least one of the external power load and the internal power load.
- FIG. 8 is a block diagram schematically showing a schematic configuration of the power supply system and the control device of the power supply system according to the fifth embodiment.
- the power supply system 100 according to the eighth embodiment has the same basic configuration as the power supply system 100 according to the first embodiment, but the output power from the power storage unit 107 is external power. It is configured to be supplied to at least one of the load 105 and the internal power load 102 of the power generation system 101.
- a wiring 202 is provided for electrically connecting the power storage unit 107 and the electric circuit (wiring 201) between the interconnection point 109 and the external power load 105 at the connection point A.
- a wiring 204 is provided to electrically connect the power storage unit 107 to the electrical path (wiring 205) between the interconnection point 109 and the internal power load 102 at the connection point B.
- a relay (relay) 213 is provided in the middle of the wiring 202. Further, a relay 212 is provided in the wiring 204. In addition, a relay 214 is provided in the electric circuit (wiring 201) between the interconnection point 109 and the connection point A. Further, a relay 211 is provided on the electric circuit (wiring 205) between the interconnection point 109 and the connection point B.
- control device 110 can control the power supply from the power storage unit 107 to at least one of the internal power load 102 and the external power load 105 by controlling the relay 211 to the relay 214. Further, the control device 110 can control the supply of power from the power system 104 to at least one of the internal power load 102 and the external power load 105 by controlling the relays 211 to 214. Specifically, the control device 110 controls the relays 211 to 214 as follows.
- the control device 110 When supplying power to both the internal power load 102 and the external power load 105 for both the power system 104 and the power storage unit 107
- the control device 110 closes the relay 211, the relay 212, and the relay 214, and sets the relay 213 to Control to open.
- power can be supplied from the power system 104 to both the internal power load 102 and the external power load 105 via the wiring 203 and the wiring 201.
- power can be supplied from the power storage unit 107 to both the internal power load 102 and the external power load 105 via the wiring 204 and the wiring 201.
- the control device 110 may control to close the relay 211, the relay 213, and the relay 214 and open the relay 212, and to close the relay 211, the relay 212, the relay 213, and the relay 214. You may control.
- the power supply system 100 (the control device 110 of the power supply system 100) according to the fifth embodiment configured as described above is activated by the power supply system 100 according to the first to fourth embodiments (including modifications). By performing the operation, the same operational effects as those of the power supply system 100 according to Embodiments 1 to 4 (including the modifications) are obtained.
- the power supply from the power storage unit 107 is controlled using the relays 211 to 214.
- the present invention is not limited to this, and the power from the power storage unit 107 is externally supplied. Any configuration may be adopted as long as it is configured to be supplied to at least one of the power load 105 and the internal power load 102.
- the power detector 106 is provided between the power system 104 and the interconnection point 109.
- a form in which the detector 106 is provided between the interconnection point 109 and the external power load 105 may be adopted.
- the power detector 106 detects the power consumption of the external power load 105.
- the total power consumption of the power generation system 101 (internal power load 102) and the external power load 105 is the power detector (not shown) that detects the detected value of the power detector 106 and the power consumption of the internal power load 102. This is the sum of the detected values.
- the electric power supply system, the electric power supply system control device, the operation method of the electric power supply system, and the control method of the electric power supply system according to the present invention are an electric charge system in which the electric charge changes depending on the electric power used by the consumer When introduced, it is useful because at least one of the startability and the stopability of the power generation system is improved while suppressing an increase in the electricity charge of the consumer.
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Abstract
Description
本実施の形態1に係る電力供給システムは、発電システムと、発電システム及び外部電力負荷へ電力供給を行う蓄電ユニットと、制御装置(電力供給システムの制御装置)と、を備え、制御装置が、発電システムを起動するときに、発電システムの起動電力及び外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、電力系統から供給される電力が、上限電力を超えないように、蓄電ユニットの電力を発電システム及び外部電力負荷の少なくともいずれか一方に供給するように制御する第1の制御、及び、発電システムの発電を停止するときに、発電システムの停止電力及び外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、電力系統から供給される電力が、上限電力を超えないように、蓄電ユニットの電力を発電システム及び外部電力負荷の少なくともいずれか一方に供給するように制御する第2の制御、の少なくともいずれか一方を実行するように構成されている。
図1は、本実施の形態1に係る電力供給システム及び電力供給システムの制御装置の概略構成を模式的に示すブロック図である。
図3Aは、本実施の形態1に係る電力供給システムにおける発電システムを起動するときの動作(第1の制御)を模式的に示すフローチャートである。
本変形例1の電力供給システムは、発電システムが燃料電池システムである態様を例示する。
本変形例2の電力供給システムは、発電システムが燃料電池システムである他の態様を例示する。
本変形例3の電力供給システムは、制御装置が、第1の制御及び第2の制御の少なくともいずれか一方の制御を実行することによって得られるコストメリット情報を決定する決定器と、該決定器が決定したコストメリット情報を外部へ出力する外部出力器と、を備える。
本実施の形態2に係る電力供給システムは、制御装置が、蓄電ユニットからの供給可能電力に基づいて発電システムの起動の許否を決定するように構成されている。
本実施の形態3に係る電力供給システムは、制御装置が、発電システムを起動するときに、発電システムの起動電力及び外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、電力系統から供給される電力が、上限電力を超えないように、蓄電ユニットの電力を発電システム及び外部電力負荷の少なくともいずれか一方に供給するように制御する第1の制御、及び、発電システムの発電を停止するときに、発電システムの停止電力及び外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、電力系統から供給される電力が、上限電力を超えないように、蓄電ユニットの電力を発電システム及び外部電力負荷の少なくともいずれか一方に供給するように制御する第2の制御、の少なくともいずれか一方を実行するように構成されている。
本実施の形態4に係る電力供給システムは、制御装置が、発電システムの起動予定時刻前において、外部電力負荷の消費電力が相対的に低い電気料金の単価に維持される上限電力以下である場合に、電力系統より蓄電ユニットに充電させるように構成されている。
ところで、上記実施の形態1乃至4(変形例を含む)に係る電力供給システム100では、発電システム101の起動するときにおいて、蓄電ユニット107から電力を出力するときに、内部電力負荷及び外部電力負荷の両方に電力が供給されるよう構成されている。
図8は、本実施の形態5に係る電力供給システム及び電力供給システムの制御装置の概略構成を模式的に示すブロック図である。
制御装置110は、継電器212及び継電器214を閉じて、継電器211及び継電器213を開けるように制御する。これにより、電力系統104から、配線203及び配線201を介して、外部電力負荷105に電力が供給され、蓄電ユニット107から、配線204及び配線201を介して、内部電力負荷102に電力が供給される。
制御装置110は、継電器211及び継電器213を閉じて、継電器212及び継電器214を開けるように制御する。これにより、電力系統104から、配線203及び配線201を介して、内部電力負荷102に電力が供給され、蓄電ユニット107から、配線202及び配線201を介して、外部電力負荷105に電力が供給される。
制御装置110は、継電器211、継電器212、及び継電器214を閉じて、継電器213を開けるように制御する。これにより、電力系統104から、配線203及び配線201を介して、内部電力負荷102及び外部電力負荷105の両方に電力を供給することができる。また、蓄電ユニット107から、配線204及び配線201を介して、内部電力負荷102及び外部電力負荷105の両方に電力を供給することができる。なお、制御装置110は、継電器211、継電器213、及び継電器214を閉じて、継電器212を開けるように制御してもよく、また、継電器211、継電器212、継電器213、及び継電器214を閉じるように制御してもよい。
2 CO低減器
3 電気ヒータ
10 発電システム
11 水素生成装置
12 酸化剤ガス供給器
13 燃料電池
13A 燃料ガス流路
13B 酸化剤ガス流路
13C 冷却媒体流路
14 冷却媒体タンク
15 電気ヒータ
31 燃料ガス供給経路
32 酸化剤ガス供給経路
33 冷却媒体経路
100 電力供給システム
101 発電システム(燃料電池システム)
102 内部電力負荷
103 制御器
104 電力系統
105 外部電力負荷
106 電力検知器
107 蓄電ユニット
108 電力制御器
109 連系点
110 制御装置
110a 予測器
201 配線
202 配線
203 配線
204 配線
205 配線
211 継電器
212 継電器
213 継電器
214 継電器
Claims (22)
- 発電システムと、
前記発電システム及び外部電力負荷へ電力供給を行う蓄電ユニットと、
前記発電システムを起動するときに、前記発電システムの起動電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するように制御する第1の制御、及び、前記発電システムの発電を停止するときに、前記発電システムの停止電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するように制御する第2の制御、の少なくともいずれか一方を実行するように構成されている制御装置と、を備える、電力供給システム。 - 前記制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの起動の許否を決定するように構成されている、請求項1記載の電力供給システム。
- 前記制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの起動処理の継続の許否を決定するように構成されている、請求項1記載の電力供給システム。
- 前記制御装置は、前記発電システムの起動予定時刻前において、前記外部電力負荷の消費電力が、前記上限電力以下である場合に、前記電力系統より前記蓄電ユニットに充電させるように構成されている、請求項1記載の電力供給システム。
- 前記発電システムは、燃料電池システムであり、
前記燃料電池システムは、起動時に発電運転可能な温度に前記燃料電池システムの構成機器を昇温するための電気ヒータを備える、請求項1記載の電力供給システム。 - 前記制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの発電の停止の許否を決定するように構成されている、請求項1又は2記載の電力供給システム。
- 前記制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの発電停止後の処理動作の継続の許否を決定するように構成されている、請求項1又は3記載の電力供給システム。
- 前記制御装置は、前記発電システムの発電の停止予定時刻前において、前記外部電力負荷の消費電力が、前記上限電力以下である場合に、前記電力系統及び前記発電システムの少なくともいずれか一方より前記蓄電ユニットに充電させるように構成されている、請求項1又は4記載の電力供給システム。
- 前記発電システムは、燃料電池システムであり、
前記燃料電池システムは、該燃料電池システムにおける排ガスから回収した水を貯える水タンクを加熱するための電気ヒータを備える、請求項1記載の電力供給システム。 - 前記制御装置は、前記第1の制御及び前記第2の制御の少なくともいずれか一方の制御を実行することによって得られるコストメリット情報を決定する決定器と、該決定器が決定した前記コストメリット情報を外部へ出力する外部出力器と、を備える、請求項1記載の電力供給システム。
- 前記外部出力器が出力した前記コストメリット情報を表示するように構成されている表示器をさらに備える、請求項11記載の電力供給システム。
- 発電システムと、外部電力負荷及び前記発電システム及び前記外部電力負荷に電力を供給する蓄電ユニットと、を備える電力供給システムを制御する電力供給システムの制御装置であって、
前記電力供給システムの前記制御装置は、前記発電システムを起動するときに、前記発電システムの起動電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するように制御する第1の制御、及び、前記発電システムの発電を停止するときに、前記発電システムの停止電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するように制御する第2の制御、の少なくともいずれか一方を実行するように構成されている、電力供給システムの制御装置。 - 前記電力供給システムの制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの起動の許否を決定するように構成されている、請求項12記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの起動処理の継続の許否を決定するように構成されている、請求項12記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記発電システムの起動予定時刻前において、前記外部電力負荷の消費電力が、前記上限電力以下である場合に、前記電力系統より前記蓄電ユニットに充電させるように構成されている、請求項12記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの発電の停止の許否を決定するように構成されている、請求項12又は13記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記蓄電ユニットからの供給可能電力に基づいて前記発電システムの発電停止後の処理動作の継続の許否を決定するように構成されている、請求項12又は14記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記発電システムの発電の停止予定時刻前において、前記外部電力負荷の消費電力が、前記上限電力以下である場合に、前記電力系統及び前記発電システムの少なくともいずれか一方より前記蓄電ユニットに充電させるように構成されている、請求項12又は15記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記第1の制御及び前記第2の制御の少なくともいずれか一方の制御を実行することによって得られるコストメリット情報を決定する決定器と、該決定器が決定した前記コストメリット情報を外部へ出力する外部出力器と、を備える、請求項12記載の電力供給システムの制御装置。
- 前記電力供給システムの制御装置は、前記外部出力器が出力した前記コストメリット情報を表示するように構成されている表示器をさらに備える、請求項19記載の電力供給システムの制御装置。
- 発電システムを起動するときに、前記発電システムの起動電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されるか否かを予測するステップと、前記相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するステップと、を備える第1の制御と、
前記発電システムの発電を停止するときに、前記発電システムの停止電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されるか否かを予測するステップと、前記相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するステップと、を備える第2の制御と、の少なくともいずれか一方を実行する、電力供給システムの運転方法。 - 発電システムを起動するときに、前記発電システムの起動電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されるか否かを予測するステップと、前記相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するステップと、を備える第1の制御と、
前記発電システムの発電を停止するときに、前記発電システムの停止電力及び前記外部電力負荷の消費電力との合計が相対的に低い電気料金の単価に維持される上限電力を超えて、相対的に高い電気料金の単価に変更されるか否かを予測するステップと、前記相対的に高い電気料金の単価に変更されると予測される場合に、前記電力系統から供給される電力が、前記上限電力を超えないように、前記蓄電ユニットの電力を前記発電システム及び前記外部電力負荷の少なくともいずれか一方に供給するステップと、を備える第2の制御と、の少なくともいずれか一方を実行する、電力供給システムの制御方法。
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US13/514,470 US9124100B2 (en) | 2010-08-04 | 2011-08-03 | Power supply system, control device of power supply system, operation method of power supply system, and control method of power supply system |
EP11814286.8A EP2602899A4 (en) | 2010-08-04 | 2011-08-03 | Power supply system, control device of power supply system, operation method of power supply system, and control method of power supply system |
JP2012526769A JP5079176B2 (ja) | 2010-08-04 | 2011-08-03 | 電力供給システム、電力供給システムの制御装置、電力供給システムの運転方法、及び電力供給システムの制御方法 |
CN201180004988.3A CN102656765B (zh) | 2010-08-04 | 2011-08-03 | 电力供给系统、电力供给系统的控制装置、电力供给系统的运转方法和电力供给系统的控制方法 |
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