WO2012090709A1 - Appareil de commande de puissance et système d'alimentation électrique répartie - Google Patents

Appareil de commande de puissance et système d'alimentation électrique répartie Download PDF

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Publication number
WO2012090709A1
WO2012090709A1 PCT/JP2011/078927 JP2011078927W WO2012090709A1 WO 2012090709 A1 WO2012090709 A1 WO 2012090709A1 JP 2011078927 W JP2011078927 W JP 2011078927W WO 2012090709 A1 WO2012090709 A1 WO 2012090709A1
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WIPO (PCT)
Prior art keywords
power
distributed
secondary battery
output
superimposed
Prior art date
Application number
PCT/JP2011/078927
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English (en)
Japanese (ja)
Inventor
正寛 牧野
渉 堀尾
俊之 平田
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三洋電機株式会社
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Publication of WO2012090709A1 publication Critical patent/WO2012090709A1/fr

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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
    • 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
    • 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
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • 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
    • 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 a power control apparatus that controls a distributed power supply system and a distributed power supply system including the power control apparatus.
  • the output power of various distributed power systems can be configured to reversely flow to the power system via the linkage point for the amount exceeding the load consumption.
  • the power reversely flowed to the power system can be sold to the power company.
  • the left side and the right side of the dotted line represent the power system side and the customer side (the power system formed in one consumer), respectively.
  • the power system includes a power transmission line L (portion indicated by a thick line) connected to the power system at a cooperation point.
  • the power transmission line L includes one or a plurality of power transmission lines L.
  • a load is connected.
  • the total power consumption of each load is defined as power consumption PLOAD .
  • the solar cell system 101 and the cogeneration system 102 are respectively connected to the power system via the power transmission line L.
  • the solar cell system 101 converts DC power generated by the solar cell 111 into AC power and outputs the AC power to the power transmission line L.
  • the solar cell power conditioner 112 (power conditioner) converts the DC power obtained by the power generation of the solar cell 111 into AC and outputs it to the power transmission line L.
  • the cogeneration system 102 converts the DC power obtained by the fuel cell 121 into AC power and outputs it to the power transmission line L.
  • Cogeneration for power conditioner 122 a DC power obtained by power generation of the fuel cell 121 is converted into AC power, and outputs to the power transmission line L as the output power P FC.
  • the cogeneration system 102 uses the exhaust heat in the power generation of the fuel cell 121 as a heat source of a heat pump water heater or a heat source of an air conditioner when performing a heating operation. These devices are referred to as exhaust heat utilization equipment 123.
  • connection point B shown in FIG. 2 is downstream from the connection point of the solar cell system 101 (point A shown in FIG. 2).
  • a power detection point 104 is provided at a position downstream of the point A in the power transmission line L and upstream of the point B.
  • the threshold value TFC is set in the power generator 122 for cogeneration, and when the power P BUY becomes equal to or less than the threshold TFC, the output power P FC is reduced so that this state is eliminated.
  • the power P BUY here is expressed by the following formula (1).
  • the output power P FC is the power consumption P LOAD threshold value corresponding to that time - so as not to exceed (power P LOAD threshold TFC), said to be limited.
  • the present invention is intended to provide a power control apparatus and a distributed power supply system that perform output restriction of a distributed power supply system and can perform the output restriction more appropriately.
  • a power control apparatus uses the common coordination point as the power for each of a plurality of distributed power systems connected to a power system via a common interconnection point.
  • the output of the distributed power supply system is limited in order from the preset lower priority order.
  • the priority order of the secondary battery system is set to the lowest priority order. It is good also as composition to do.
  • the priority order may be updated according to predetermined reference information. According to this configuration, it is easy to set the priority setting contents to be adapted to the situation at that time.
  • the power control apparatus having the above configuration in which the secondary battery system is configured, more specifically, the priority is based on information on a remaining charge of the secondary battery. It is good also as a structure set based on.
  • a power control device having the above configuration in which a cogeneration system having a power generation device is used. More specifically, the priority is a power that can be generated by the power generation device.
  • a configuration may be set with reference to any one of the amount of hot water in the hot water storage tank in which hot water heated by the exhaust heat of the power generation device is stored and the temperature of the hot water storage tank.
  • the priority order is more specifically described. May be configured with reference to information on the remaining amount of fuel supplied to the power generation device.
  • the cogeneration system when the amount of hot water in the hot water tank does not reach a predetermined reference value, the cogeneration system may be set to the highest priority.
  • the power control apparatus stores the priorities assigned to a plurality of distributed power supply systems that are linked so as to be able to superimpose AC power on the power system, and superimposes them on the power system from the plurality of distributed power supply systems. It is good also as a structure which outputs the signal which restrict
  • the distributed power supply system may be configured to convert at least DC power output from any one of the generated power of the solar battery or the discharged power of the storage battery into AC power and superimpose it on the power system.
  • the distributed power supply system is a distributed power supply system that is linked so that AC power can be superimposed on the power system.
  • a control unit is provided that suppresses the amount of AC power to be superimposed on the power system when a signal that regulates the amount of AC power to be superimposed is input.
  • the distributed power supply system regulates the amount of AC power superimposed on the power system in the distributed power system connected to the power system via a connection point and capable of superimposing AC power.
  • a control unit that suppresses the amount of AC power superimposed on the power system when a signal to be input is input.
  • the distributed power supply system is ordered with respect to the output restriction of the distributed power supply system, and the output restriction can be performed more appropriately.
  • FIG. 1 is an explanatory diagram showing a form of a power system 9 according to the present embodiment.
  • the left side and the right side of the dotted line represent the power system side (the power system provided by the power company) and the customer side (the power system 9 formed in one consumer), respectively.
  • the consumer is a household or a business entity that has a power sales contract with an electric power company. Electricity trading with electric power companies will be performed separately for each consumer.
  • the power system 9 includes a power transmission line L (a portion indicated by a thick line in FIG. 1) connected to a power system (system power supply).
  • the power transmission line L is connected to one or a plurality of loads, for example, electric devices used in the customer. These loads operate using power supplied through the power transmission line L, that is, power supplied from a power system or a distributed power system connected to the power transmission line L as a power source.
  • the total power consumption of each load may be expressed as power consumption PLOAD .
  • the power system 9 includes a solar cell system 1, a cogeneration system (cogeneration system) 2, and a secondary battery system 3 as distributed power supply systems (systems that output power using a distributed power supply). As shown in FIG. 1, these distributed power supply systems are each connected to a power transmission line L and connected to a power system via a common connection point.
  • the solar cell system 1 outputs electric power obtained by the solar cell 11 which is one of the distributed power sources to the power transmission line L.
  • the solar cell 11 is formed of a solar cell panel or the like, and is a device that generates electric power by photoelectrically converting received sunlight. Further, the solar cell system 1 is provided with a solar cell power conditioner 12.
  • the solar cell power conditioner 12 is connected to the power transmission line L, converts the DC power obtained by the power generation of the solar cell 11 into AC, and outputs the AC power toward the power transmission line L. Of this AC power, the power not consumed by the load flows backward to the power system. The amount of power flowing backward can be measured using a power detector (not shown) provided between point A on the power transmission line L and the power system.
  • the cogeneration system 2 outputs electric power obtained by the fuel cell 21 that is one of the distributed power sources to the power transmission line L.
  • the fuel cell 21 is a power generation device included in the cogeneration system 2, and generates power in a power generation possible range using fuel supplied in advance.
  • the cogeneration system 2 is provided with a power generator 22 for cogeneration.
  • Cogeneration for power conditioner 22 is connected to a power transmission line L, the DC power obtained by power generation of the fuel cell 21 is converted into AC power and outputs toward the power transmission line L as the output power P FC.
  • the cogeneration system 2 is provided with a waste heat utilization facility 23.
  • the waste heat utilization facility 23 can be utilized as a part of a heat source such as hot water supply or air conditioning by utilizing the waste heat in the power generation of the fuel cell 21.
  • a heat source such as hot water supply or air conditioning
  • hot water heated using the exhaust heat of the fuel cell 21 as an auxiliary heat source can be stored in a hot water storage tank 23a provided as one of the facilities.
  • the secondary battery system 3 converts the DC power discharged by the secondary battery 31 that is one of the distributed power sources into AC power and outputs the AC power to the power transmission line L.
  • the secondary battery 31 can be charged and discharged, and has superior output controllability (responsiveness) compared to the fuel cell 21 and the like. That is, according to the secondary battery 31, a quicker response can be made to a situation where a sudden output change is required.
  • the secondary battery system 3 includes a secondary battery power conditioner 32.
  • the secondary battery power conditioner 32 is connected to the power transmission line L, converts the DC power output from the secondary battery 31 to AC, and outputs the output power P BAT toward the power transmission line L.
  • the secondary battery power conditioner 32 converts the alternating current power supplied from the power transmission line L into direct current and sends the secondary battery 31 to the secondary battery 31 when the secondary battery 31 is charged.
  • each distributed power supply system (1 to 3) is supplied to the load via the power transmission line L. Moreover, when the sum total of the output power is excessive with respect to the load, the surplus part flows backward to the power system.
  • connection points in the cogeneration system 2 and the secondary battery system 3 (points B and C shown in FIG. 1) with respect to the connection points with the power transmission lines L of the respective distributed power systems. Is provided on the downstream side (the side far from the power system) from the connection point (point A shown in FIG. 1) of the solar cell system 1.
  • power detection points (4a, 4b) are provided at positions downstream of the point A and upstream of the points B and C.
  • An electric power detection point (not shown) is provided between the point A and the system power supply so that the entire current flowing from the customer side to the electric power system can be detected.
  • the electric power sales power can be obtained from the entire current, and is usually attached to the building as a power sales meter.
  • the power P BUY represents the purchased power (the magnitude of the purchased power) in the power system 9 when the solar cell system 1 is not generating power.
  • the power P BUY has a negative value, it can be said that the output power of the cogeneration system 2 or the secondary battery system 3 is flowing backward in the power system. Therefore, the amount of electric power in the reverse power flow can be controlled by changing the conversion amounts of the power generator 22 for cogeneration and the power converter 32 for the secondary battery.
  • the fuel cell 21 is suitable for long-period adjustment because it requires time to change the amount of power generation, and the secondary battery 31 is suitable for short-period adjustment because it does not require time to change the amount of power generation.
  • the power output to the power transmission line L is limited with a margin of.
  • a threshold TFC corresponding to the cogeneration system 2 is set in the cogeneration power conditioner 22 by the controller 5 described later.
  • the power generator 22 for cogeneration outputs power P so that this state is canceled when the power P BUY becomes equal to or less than the threshold value TFC (so that the power P BUY exceeds the threshold value TFC almost without excess or shortage). Restrict FC .
  • a threshold value TBAT corresponding to the secondary battery system 3 is set in the secondary battery power conditioner 32 by the controller 5 described later. Then, the secondary battery power conditioner 32 outputs power P BAT so that this state is canceled when the power PBUY is equal to or less than the threshold value TBAT (so that the power P BUY exceeds the threshold value TBAT substantially without excess or shortage). To limit.
  • the power system 9 is provided with a controller 5.
  • the controller 5 is connected to each power conditioner of the distributed power supply system (in this embodiment, the cogeneration power conditioner 22 and the secondary battery power conditioner 32). The controller 5 can recognize which power conditioner itself has the priority order for setting the power output limit.
  • the controller 5 determines the priority order for each of the cogeneration system 2 and the secondary battery system 3 based on the predetermined information, and sets the priority order for each power conditioner (22, 32).
  • This "priority order" is an order set from the viewpoint of the importance or controllability of each distributed power supply system in the present situation, and it is set to a higher order as it is undesirable to limit the output. is there. It should be noted that various forms can be adopted as to what information the controller 5 determines the priority based on what information. Some specific examples of the form will be described again.
  • the priority order is set by setting the above-described threshold values (TFC, TBAT) to each power conditioner (22, 32). It has come to be. That is, the controller 5 sets a higher threshold value in order from the distributed power supply system with the lowest priority. For example, when the priority order of the secondary battery system 3 is lower than that of the cogeneration system 2, the threshold value TFC for the cogeneration system 2 is set to 100W, and the threshold value TBAT for the secondary battery system 3 is set to 200W.
  • the controller 5 may have a function of adjusting the output power of the cogeneration system 2 or the secondary battery system 3 in accordance with a user instruction or the like in addition to the function of setting a threshold value for each distributed power supply system.
  • the controller 5 has a function of controlling the cogeneration system 2 and the secondary battery system 3 together with the cogeneration power conditioner 22 and the secondary battery power conditioner 32. That is, the controller 5, the cogeneration power conditioner 22, and the secondary battery power conditioner 32 form a power control device 6 that controls the cogeneration system 2 and the secondary battery system 3 as a whole. Further, the controller 5 is configured to be able to exchange signals with the outside of the power system 9 and can set respective threshold values from the outside. In addition, for easy explanation, the threshold value is set by the controller 5 in the cogeneration system 2 and the secondary battery system 3, but the threshold value may be set in the AC output of the solar cell power conditioner 12 of the solar cell system 1. The AC output is controlled at a power detection point between the point A and the system power supply.
  • the controller 5 stores the priorities assigned to the plurality of distributed power systems linked so that the AC power can be superimposed on the power system, and the AC power to be superimposed on the power system from the plurality of distributed power systems. Based on the magnitude of the sum and a predetermined threshold, a signal for limiting the amount of AC power to be superimposed on the power system according to the priority order is output. Furthermore, this distributed power supply system further includes a configuration in which DC power output from at least one of the generated power of the solar battery or the discharged power of the storage battery is converted into AC power and superimposed on the power system.
  • the controller 5 performs output restriction on these distributed power supply systems so that the output power in the cogeneration system 2 and the secondary battery system 3 does not exceed the threshold value and is supplied to the power transmission line L. Moreover, output limitation is performed so that the output power in the solar cell system 1 does not exceed the threshold and is supplied to the power system.
  • output limitation is performed so that the output power in the solar cell system 1 does not exceed the threshold and is supplied to the power system.
  • the threshold TFC is set to 100 W and the threshold TBAT is set to 200 W. From this, it can be said that the secondary battery system 3 has a lower priority than the cogeneration system 2.
  • the output power P FC is 500 W
  • the output power P BAT is 500 W
  • the power consumption P LOAD (sum of power consumption of each load) is 2000 W (for convenience, the “initial state”)
  • the power consumption P LOAD Suppose the case of decrease.
  • the power P BUY is 1000 W, which exceeds the threshold value TFC and the threshold value TBAT, so that the output of the cogeneration system 2 and the secondary battery system 3 is not limited.
  • the output power P BAT is finally limited to less than 300 W (for example, 299 W), and the state where the power P BUY exceeds the threshold value TBAT is maintained.
  • the output power P FC is not particularly limited, and remains in the initial state of 500 W.
  • the output power P BAT is limited so that the power P BUY does not become equal to or less than the threshold value TBAT.
  • the output power P BAT is finally limited to substantially zero, and the output power P BAT cannot be reduced any further.
  • the power P BUY decreases to the threshold value TFC. Therefore, as the power consumption P LOAD further decreases, the output power P FC is limited so that the power P BUY does not become equal to or less than the threshold value TFC. As a result, finally, the output power P BAT is limited to substantially zero, the output power P FC is limited to less than 400 W (for example, 399 W), and the state where the power P BUY exceeds the threshold TFC is maintained.
  • the output of the secondary battery system 3 is limited until the sum of the output powers of the cogeneration system 2 and the secondary battery system 3 does not exceed the threshold value. Yes.
  • the output of the secondary battery system 3 is first limited until the sum of the output powers of the cogeneration system 2 and the secondary battery system 3 does not exceed the threshold, and then the cogeneration is performed. System 2 output is limited.
  • the power control device 6 has a low priority until the sum of the output powers of the cogeneration system 2 and the secondary battery system 3 does not exceed a threshold value (which varies depending on the power consumption P LOAD at that time). In this order, the output of the distributed power supply system is limited.
  • This threshold value is power consumption P LOAD -threshold value TBAT until the output power P BAT becomes substantially zero, and thereafter power consumption P LOAD -threshold value TFC.
  • the controller 5 advances the output restriction for only one distributed power supply system.
  • the output restriction is similarly applied to only one distributed power supply system with the next lowest priority while maintaining this restricted state. Will continue.
  • the power control device 6 performs such an operation until the total output power does not exceed the threshold value.
  • the output power is controlled so that the AC output of the solar cell system 1 does not exceed the set threshold value.
  • the generated power of the solar cell system 1 is supplied to the power system until this threshold is reached, and at the same time, the generated power of the cogeneration system 2 and the secondary battery system 3 is not supplied to the power system. Therefore, by changing the threshold value set in the solar cell system 1, it is possible to control the AC power that is reversely flowed to the power system. If a signal for setting the threshold value is sent from the outside to the controller 5, this reverse power flow is externally transmitted. The amount of power can be changed.
  • a distributed power system including such a solar cell system 1 is linked to an electric power system so that AC power can be superimposed, and is superimposed on the electric power system according to the amount of electric power superimposed on the electric power system from a plurality of distributed power systems.
  • a control unit that suppresses the amount of AC power superimposed on the power system is provided.
  • the distributed power supply system including such a solar cell system 1 is connected to the power system via a connection point so that AC power can be superimposed, and regulates the amount of AC power superimposed on the power system.
  • a signal is input, it has a control unit that suppresses the amount of AC power superimposed on the power system.
  • the controller 5 sets priority for each of the distributed power supply systems based on the predetermined information.
  • the mode in which the controller 5 sets the priority order (or the setting content is updated) the mode will be described below by taking the first to fourth modes as examples.
  • the first form can be adopted when one of the plurality of distributed power supply systems is a secondary battery system (a secondary battery is used as a distributed power supply).
  • the first form is a form in which the priority order of the secondary battery system is fixedly set to the lowest priority order. That is, in the power system 9, the controller 5 of the first form fixedly sets the priority order of the secondary battery system 3 to a lower order than the cogeneration system 2.
  • the solar cell system 1 is not limited.
  • the secondary battery 31 is superior in output controllability (responsiveness) compared to the fuel cell 21 and the like. That is, according to the secondary battery 31, even when a situation in which a sudden output change is required (for example, a situation in which the power consumption P LOAD suddenly decreases), a quicker response can be made. ing. Therefore, according to the first embodiment, the secondary battery system 3 is first subjected to output restriction, and the characteristics of the secondary battery 31 can be utilized. Furthermore, it is possible to extend the life of the fuel cell 21 by preventing the cogeneration system 2 from being subject to output restriction as much as possible and reducing the burden on the fuel cell 21.
  • the power control device 6 can moderately suppress the output of the fuel cell 21 while the priority order of the secondary battery system 3 is set to a lower order than the cogeneration system 2. Also good. In this way, the output of the fuel cell 21 can be gradually changed while allowing the secondary battery system 3 to respond quickly to fine fluctuations in the power consumption of the load. As a result, it is possible to extend the life of the fuel cell 21 by reducing the burden on the fuel cell 21.
  • the second form can be adopted when one of the plurality of distributed power supply systems is a secondary battery system (a secondary battery is used as a distributed power supply).
  • a secondary battery is used as a distributed power supply.
  • information on the remaining charge of the secondary battery is acquired as reference information, and the setting contents of the priority order are updated according to this reference information.
  • the controller 5 of the second form monitors the remaining charge of the secondary battery 31.
  • the controller 5 sets the priority order of the secondary battery system 3 to a lower order than the cogeneration system 2 while the remaining charge amount is less than or equal to the predetermined reference amount.
  • the priority order of the battery system 3 is set higher than the cogeneration system 2.
  • the solar cell system 1 is not limited.
  • the secondary battery system 3 is first subjected to output restriction, It is possible to prevent the cogeneration system 2 from being subject to output restriction as much as possible.
  • the secondary battery system 3 should not be subject to output restriction as much as possible. Is possible.
  • the third mode may be employed when one of the plurality of distributed power supply systems is a cogeneration system (a power generation device such as a fuel cell or a gas engine is used as a distributed power supply).
  • the third mode is information on the cogeneration system (for example, the power that can be generated by the power generator, the amount of hot water in the hot water tank in which hot water warmed by the exhaust heat of the power generator is stored, and the temperature of the hot water tank) Is set as reference information, and the priority setting content is updated according to the reference information.
  • the controller 5 of the third form monitors the amount (or temperature) of hot water in the hot water tank 23a.
  • the controller 5 sets the priority order of the cogeneration system 2 to a higher or higher order than the secondary battery system 3 while the amount of hot water (or temperature) is below a predetermined reference amount, and exceeds the reference amount.
  • the priority order of the cogeneration system 2 is set lower than that of the secondary battery system 3.
  • the solar cell system 1 is not limited.
  • the cogeneration system It is possible to prevent 2 from being subject to output restriction as much as possible.
  • the amount of hot water (or temperature) in the hot water storage tank 23a is relatively large, that is, a sufficient amount of hot water is secured in the hot water storage tank 23a (therefore, it is less necessary to supply hot water to the hot water storage tank 23a from now on).
  • the importance of the battery 21 is considered to be low, it is possible to make the cogeneration system 2 subject to output restriction first and to prevent the secondary battery system 3 from being subject to output restriction as much as possible.
  • the fourth mode can be employed when one of the plurality of distributed power systems is a cogeneration system (a power generation apparatus that generates power using fuel supplied in advance is a distributed power source).
  • a cogeneration system a power generation apparatus that generates power using fuel supplied in advance is a distributed power source.
  • information on the remaining amount of fuel supplied to the power generation apparatus is acquired as reference information, and the priority setting content is updated according to this reference information.
  • the controller 5 of the fourth form monitors the remaining amount of fuel supplied to the fuel cell 21.
  • the controller 5 sets the priority of the cogeneration system 2 to a lower order than the secondary battery system 3 while the remaining amount is equal to or less than the predetermined reference amount, and the cogeneration system 2 while the remaining amount exceeds the reference amount. 2 is set higher than the secondary battery system 3.
  • the solar cell system is not limited.
  • the cogeneration system 2 is first subjected to output restriction and the secondary battery system 3 can be formed. As a result, it is possible to prevent the output from being restricted.
  • the remaining amount of fuel is relatively small (usually, the importance of the fuel cell 21 is considered to be low)
  • the cogeneration system 2 is first subjected to output restriction and the secondary battery system 3 can be formed.
  • the remaining amount of fuel is relatively large (usually, the importance of the fuel cell 21 is considered high)
  • the power control device 6 sets priorities for each of the solar cell system 1, the cogeneration system 2, and the secondary battery system 3 (a plurality of distributed power supply systems) linked to the power system.
  • a functional unit priority setting unit
  • a functional unit power limiting unit that limits the output of the distributed power supply system so that the sum of the outputs of the cogeneration system 2 and the secondary battery system 3 does not exceed the respective thresholds. It is equipped with.
  • the power limiting unit limits the output of the distributed power supply system in order from the lowest priority until the output does not exceed the above threshold.
  • the controller 5 regarding the output restriction of the solar cell system 1, the cogeneration system 2, and the secondary battery system 3, it is determined in advance which distributed power supply system this output restriction is executed first. Can be performed more appropriately.
  • the present invention can be similarly applied even when the number of distributed power supply systems subject to output restriction is three or more.
  • the present invention can be used for a power system having a plurality of distributed power supply systems.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

La présente invention concerne un appareil de commande de puissance destiné à restreindre la sortie d'une pluralité de systèmes d'alimentation électrique répartie afin de commander la puissance de sortie totale, permettant d'exécuter cette restriction de sortie de manière plus appropriée. L'appareil de commande de puissance est configuré de façon à ce qu'une priorité soit établie pour chacun des systèmes d'une pluralité de systèmes d'alimentation électrique répartie connectés à un réseau électrique. De plus, la sortie de chacun des systèmes de la pluralité de systèmes d'alimentation électrique répartie est restreinte de façon à ce que la sortie totale de la pluralité de systèmes d'alimentation électrique répartie ne dépasse pas une valeur de seuil, c'est-à-dire que la sortie de la pluralité de systèmes d'alimentation électrique répartie est restreinte une par une, en partant d'un système d'alimentation électrique ayant une basse priorité, jusqu'à la réalisation d'un état tel que la sortie totale ne dépasse pas la valeur de seuil.
PCT/JP2011/078927 2010-12-28 2011-12-14 Appareil de commande de puissance et système d'alimentation électrique répartie WO2012090709A1 (fr)

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JP2010291572A JP2014045527A (ja) 2010-12-28 2010-12-28 電力制御装置
JP2010-291572 2010-12-28

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WO2012090709A1 true WO2012090709A1 (fr) 2012-07-05

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JP2014072929A (ja) * 2012-09-27 2014-04-21 Kyocera Corp エネルギー管理システム、制御装置、及び制御方法
EP2924840A4 (fr) * 2012-11-26 2015-12-23 Panasonic Ip Man Co Ltd Système d'alimentation électrique, appareil de conversion de puissance et appareil commutateur de point de mesure
WO2016024406A1 (fr) * 2014-08-11 2016-02-18 京セラ株式会社 Dispositif, système et procédé d'alimentation électrique
EP3041109A4 (fr) * 2013-08-30 2017-04-26 Kyocera Corporation Système d'alimentation électrique distribuée et conditionneur de puissance
CN112292561A (zh) * 2018-01-24 2021-01-29 比姆全球公司 带有电动车辆（ev）充电器的灯立杆

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JP6584774B2 (ja) * 2014-12-25 2019-10-02 京セラ株式会社 電力制御システム、電力制御装置及び電力制御方法
JP6522487B2 (ja) * 2015-11-27 2019-05-29 新電元工業株式会社 パワーコンディショナの運転制御装置、運転制御方法、および運転制御プログラム
DE112016006748T5 (de) * 2016-04-14 2018-12-27 Mitsubishi Electric Corporation Energiemanagementsystem
JP6846149B2 (ja) * 2016-09-29 2021-03-24 大和ハウス工業株式会社 電力供給システム
JP6951849B2 (ja) * 2017-03-22 2021-10-20 大和ハウス工業株式会社 電力供給システム
JP6996152B2 (ja) * 2017-08-04 2022-01-17 日新電機株式会社 エネルギーマネジメントシステム
JP7346211B2 (ja) * 2019-09-30 2023-09-19 大和ハウス工業株式会社 電力供給システム

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JP2014072929A (ja) * 2012-09-27 2014-04-21 Kyocera Corp エネルギー管理システム、制御装置、及び制御方法
EP2924840A4 (fr) * 2012-11-26 2015-12-23 Panasonic Ip Man Co Ltd Système d'alimentation électrique, appareil de conversion de puissance et appareil commutateur de point de mesure
EP3041109A4 (fr) * 2013-08-30 2017-04-26 Kyocera Corporation Système d'alimentation électrique distribuée et conditionneur de puissance
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JPWO2016024406A1 (ja) * 2014-08-11 2017-04-27 京セラ株式会社 電力供給機器、電力供給システム、および電力供給方法
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CN112292561A (zh) * 2018-01-24 2021-01-29 比姆全球公司 带有电动车辆（ev）充电器的灯立杆

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