WO2017051615A1 - 電力制御システム、方法及び制御装置 - Google Patents
電力制御システム、方法及び制御装置 Download PDFInfo
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- WO2017051615A1 WO2017051615A1 PCT/JP2016/072770 JP2016072770W WO2017051615A1 WO 2017051615 A1 WO2017051615 A1 WO 2017051615A1 JP 2016072770 W JP2016072770 W JP 2016072770W WO 2017051615 A1 WO2017051615 A1 WO 2017051615A1
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- facility
- power
- storage battery
- upper limit
- power consumption
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- 238000000034 method Methods 0.000 title claims description 13
- 238000003860 storage Methods 0.000 claims abstract description 133
- 238000007599 discharging Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 30
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- 238000012545 processing Methods 0.000 description 4
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Classifications
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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
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- 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
-
- 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
- H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
-
- 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
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
-
- 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
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
-
- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Definitions
- the present disclosure relates to power control, and more specifically, to a technology for controlling power supplied to a facility such as a factory by controlling charge / discharge of a storage battery.
- storage batteries are installed in the customer's facilities to manage the power supply to the facilities.
- a storage battery or solar cell is installed in a customer's facility, and the power conditioner controls the supply of power from the grid to the facility, charging / discharging of the storage battery, the supply of power generated by the solar cell to the facility, or power sale To do.
- the power charge is composed of, for example, a basic power charge and a power charge (a pay-as-you-go charge) determined according to the amount of power used.
- the basic charge of power is set according to the highest peak power among the power consumed by consumers in the past.
- a threshold is set so that the level of power consumed by the consumer is below a certain level, and the power stored in the storage battery is supplied to the facility according to the comparison result of the magnitude of the consumer's power consumption and the threshold.
- the consumer it is possible to level the peak demand for power consumed by consumers.
- the consumer it is possible for the consumer to reduce the amount of power supplied from the grid and to reduce the power charge.
- leveling the load has an advantage that the power supply is stabilized.
- Patent Document 1 As a technique for reducing the maximum peak power level (peak cut), for example, Japanese Patent Laid-Open No. 2008-306932 (Patent Document 1) suppresses the capacity of a power storage device while reliably performing peak cut. Describes a power storage system that can According to the technique of Patent Document 1, the power storage system switches the secondary battery so that the secondary battery is charged during the nighttime power hours and discharged from the secondary battery during the daytime power peak hours. Further, the power storage system causes the power storage device to perform a charging operation when the discharge operation by the power storage device is not required during the peak time period and the charge state of the power storage device is not a full charge state. Thus, since there is a margin in power demand in the peak time zone and the charging operation is performed when the power storage device is not fully charged, it is possible to maintain the state where the power storage device is close to full charge as much as possible. It is described in.
- a threshold value for comparing with the power consumption in the facility may be set sufficiently high. However, if the threshold value is set high, there will be less opportunities to start discharging from the storage battery due to the peak cut, and the effect of leveling the load will be reduced, leading to unstable power supply for the power company. In other words, it may reduce the willingness to disseminate the peak cut system for the electric power company.
- An object of the present disclosure is to provide a technology that can control the supply of power to a facility and meet the demands of both a consumer and a power supplier.
- the power control system is for controlling the supply of power to a facility.
- the power control system is installed in a facility, is charged by receiving power supply, and discharges the charged power, thereby storing a storage battery for supplying power to the facility and the actual power consumption value of the facility
- Power storage means acquisition means for acquiring at least one of information relating to the external environment of the facility, or parameter information relating to power consumption in the internal environment of the facility, and information acquired by the acquisition means for the facility
- an upper limit set value of power supplied from the grid to the facility based on the actual value of power consumption stored in the power storage means, and set an upper limit for the power supplied from the grid to the facility
- Supply control means for supplying the power charged in the storage battery to the facility when the power consumption of the facility exceeds the upper limit set value.
- a method for controlling the supply of power to a facility is provided.
- a storage battery is installed in the facility.
- the storage battery is charged by receiving power supply, and supplies power to the facility by discharging the charged power.
- the control device obtains at least one of information on an external environment of the facility or information on a parameter related to power consumption in the internal environment of the facility, and the control device is obtained for the facility.
- the upper limit setting value of power supplied from the system to the facility is determined, and the upper limit of power supplied from the system to the facility is set to the upper limit setting value. In the case where the power consumption of the facility exceeds the upper limit set value, the power charged in the storage battery is supplied to the facility.
- a control device for controlling the supply of power to the facility.
- a storage battery is installed in the facility to receive power and be charged, and to supply the facility with power by discharging the charged power.
- the control device includes supply control means for controlling supply of power from the storage battery to the facility.
- the supply control means determines the power supplied from the grid to the facility, which is determined based on at least one of the information related to the external environment of the facility or the information related to the internal environment of the facility, and the actual power consumption value of the facility. When the power consumption of the facility exceeds the upper limit set value so that the upper limit set value is obtained and the upper limit of the power supplied from the grid to the facility is the upper limit set value, the power charged in the storage battery is Configured to supply.
- the power demand peak is further leveled so that the facility can use the power while controlling the peak power demand so as not to exceed the maximum power that the power supplier can supply. Can be. Therefore, it is possible for the consumer to reduce the basic charge of power. In addition, for the power supply company, the supply of power can be further stabilized.
- FIG. 1 is a block diagram schematically showing a configuration of a power control system 1 according to a first embodiment.
- 2 is a block diagram showing a configuration of a control device 100.
- FIG. 3 is a diagram showing a data structure of internal environment information 163 stored in the control device 100.
- FIG. It is a figure which shows the data structure of the storage battery performance information 165 memorize
- FIG. 4 is a flowchart showing processing for controlling charging / discharging of the storage battery 500 based on at least one of information related to the external environment of the facility 800 and information related to the internal environment.
- 6 is a flowchart illustrating an operation of the control device 100 in the power control system of the second embodiment.
- FIG. 1 is a block diagram schematically showing the configuration of the power control system 1 of the first embodiment.
- the control device 100 controls the supply of power to the facility 800.
- the control device 100 receives information on the power that can be supplied by the power plant 900 to the facility 800 (suppliable power information) from, for example, the server 300 so that the maximum power that can be supplied by the power plant 900 is not exceeded.
- the facility 800 is, for example, a factory and is a facility that consumes electric power. The amount of power demand varies depending on the type of facility.
- a power control system 1 includes a control device 100, a power conditioner 200, a server 300, an information terminal 400, a storage battery 500, a solar cell string 600, a facility 800, and a power plant 900.
- the control device 100, the information terminal 400, and the server 300 are connected to be communicable with each other via the cloud network 700.
- the solar cell string 600, the power conditioner 200, and the storage battery 500 are disposed, for example, in the vicinity of the facility 800 (for example, outdoors of the facility 800).
- Solar cell string 600 includes a plurality of solar cell modules.
- the solar cell string 600 supplies the power conditioner 200 with the electric power generated by the photoelectric effect upon receiving sunlight.
- the storage battery 500 is installed in the facility 800, is charged by receiving power supplied from the power conditioner 200, and discharges the charged power to supply power to the facility 800 by the power conditioner 200.
- the power consuming device is a device that consumes power by operating in the internal environment of the facility 800.
- the power consuming device is a production device that is installed in a factory to produce a product.
- the control device 100 is a computer system including a storage device.
- the control device 100 receives information regarding the external environment of the facility 800 from the server 300 via the cloud network 700.
- the information regarding the external environment of the facility 800 includes, for example, performance data regarding the temperature at the location of the facility 800 and data on the temperature expected at the location of the facility 800 (expected temperature data).
- the control device 100 receives information regarding the internal environment of the facility 800 from the server 300 or the information terminal 400 via the cloud network 700.
- the information related to the internal environment of the facility 800 includes, for example, operation result data of power consuming devices operating in the facility 800 and operation plan data indicating the plan contents for operating the power consuming devices.
- the operation plan data of the power consuming equipment is information on the time zone during which the production machine for producing the product is operated, information on the number of productions that the production machine is scheduled to produce, and the like. Contains information. That is, the operation plan data of the power consuming device is information regarding the amount of power consumed by the power consuming device.
- the control device 100 acquires the actual power consumption value in the facility 800 from the server 300, for example, and stores the acquired value in a memory or the like.
- the control apparatus 100 acquires at least one of information related to the external environment of the facility 800 and information related to the internal environment of the facility 800 from the server 300 and the like, and based on the acquired information and the actual power consumption value in the facility 800.
- the upper limit setting value (threshold value) indicating the upper limit of the power supplied from the system to the facility 800 is determined.
- the control device 100 supplies the power charged in the storage battery 500 to the facility 800.
- the power conditioner 200 is controlled so as to be supplied to the inverter.
- the control device 100 estimates the relationship between the air temperature and the power consumption of the facility 800 based on the actual data regarding the air temperature and the actual power consumption value of the facility 800.
- the control device 100 calculates a predicted value of power consumption of the facility 800 based on the estimation result and the predicted temperature data.
- the control device 100 determines an upper limit setting value based on the calculated predicted value (for example, a predetermined ratio of a peak of power consumption in the predicted value (for example, a cut amount specified by the user, It may be a fixed ratio to the predicted value (for example, 90%)).
- the control device 100 supplies the power charged in the storage battery 500 to the facility 800 when the power consumption of the facility 800 exceeds the determined upper limit setting value.
- the control apparatus 100 estimates the relationship between the operation results of the power consuming device and the power consumption of the facility 800 based on the operation result data of the power consuming device of the facility 800 and the actual power consumption value of the facility 800. .
- the control device 100 calculates a predicted value of the power consumption of the facility 800 based on the estimation result and the operation plan data of the power consuming device.
- the control device 100 determines an upper limit setting value based on the calculated predicted value.
- the control device 100 supplies the power charged in the storage battery 500 to the facility 800 when the power consumption of the facility 800 exceeds the determined upper limit setting value.
- a storage battery 500 and a solar cell string 600 are connected to the power conditioner 200.
- the power conditioner 200 receives power supplied from the grid and supplies power to the facility 800.
- the power conditioner 200 has a function of converting DC power generated by the solar cell string 600 into AC power that can be used in the facility 800.
- the power conditioner 200 supplies the power generated by the solar cell string 600 to the facility 800 or the storage battery 500. Further, the power conditioner 200 sells the electric power generated by the solar cell string 600 to the outside through the watt hour meter. Further, the power conditioner 200 controls charging to the storage battery 500 and discharging from the storage battery 500.
- the control device 100 can control the operation of the power conditioner 200.
- the control device 100 uses the power corresponding to the total calculation result (power consumption) predicted to be consumed in the facility 800 beyond the upper limit set value in the power consumption prediction data.
- the storage battery 500 is charged by the power conditioner 200 before the time zone predicted to exceed the set value.
- the power conditioner 200 is predicted to be consumed in a predetermined time (for example, a midnight time zone where the power rate is relatively low) exceeding the upper limit set value in the power consumption prediction data.
- the storage battery 500 is charged with power for one day corresponding to the amount of power.
- the power conditioner 200 compares the power consumption of the facility 800 with the upper limit set value, and when the power supplied from the system to the facility 800 reaches the upper limit set value, the power conditioner 200 calculates the power stored in the storage battery 500. Supply to facility 800. By doing so, the power supplied from the grid to the facility 800 does not exceed the upper limit setting value (the upper limit of the power supplied from the grid to the facility 800 is set to the upper limit setting value), The power conditioner 200 can supply the power stored in the storage battery 500 to the facility 800.
- the server 300 is a server that collects predetermined information such as weather information and distributes it to the control device 100. Further, the server 300 collects power consumption information of the facility 800 and distributes it to the control device 100.
- the information terminal 400 is a terminal operated by a user of the facility 800, for example, and transmits information related to the internal environment of the facility 800 to the control device 100, the server 300, or the like.
- FIG. 2 is a block diagram illustrating a configuration of the control device 100.
- control device 100 includes a communication unit 102, a storage unit 106, and a control unit 107.
- the communication unit 102 is a communication interface that performs modulation / demodulation processing for the control device 100 to transmit and receive signals to and from other communication devices.
- the storage unit 106 includes a flash memory, an HDD (Hard Disk Drive), a RAM (Random Access Memory), and the like, stores a program used by the control device 100, and accumulates various data used by the control device 100.
- the storage unit 106 stores power consumption performance data 161, external environment information 162, internal environment information 163, upper limit set value information 164, and storage battery performance information 165.
- the power consumption record data 161 is data indicating a history of power consumption for the facility 800 managed by the control device 100.
- the actual power consumption data 161 indicates the history of the overall power consumption of the facility 800, the power consumption of the power consuming devices installed in the facility 800, and the like.
- External environment information 162 is information regarding the external environment of the facility 800.
- the external environment information 162 includes actual data and predicted temperature data regarding the temperature at the location of the facility 800.
- the internal environment information 163 is information related to the internal environment of the facility 800.
- the internal environment information 163 includes information indicating an operation result and an operation plan of a power consuming device that operates in the facility 800.
- the power consuming device operating in the facility 800 is, for example, a production machine for manufacturing a product when the facility 800 is a factory.
- the operation results of the power consuming equipment include, for example, the number of products produced by the operation of the production machine, the time zone during which the production machine is operated, and the like.
- the operation plan of the power consuming device includes information such as a time zone in which the production machine is scheduled to operate, a planned number of products produced by the production machine, and a planned weight.
- the internal environment information 163 includes information related to the operation plan such as the number of personnel for operating the machine, the number of orders received, the planned number of sales, and the number of sales targets.
- the upper limit set value information 164 is data defining an upper limit set value of power supplied from the grid in the facility 800.
- the storage battery performance information 165 is information indicating the performance of the storage battery 500.
- the storage battery 500 is, for example, the number of times that the storage battery 500 is guaranteed by a performance test or the like (guaranteed number), a period during which a failure or the like is guaranteed after the use of the storage battery 500 is started (guarantee period), or other performance. Information indicating this is defined in advance.
- the storage battery performance information 165 changes with the use of the storage battery 500, such as the actual value of the number of times charge / discharge has been performed since the start of use of the storage battery 500, and the period (trial period) that has elapsed since the start of use of the storage battery 500. Information indicating the performance to be performed.
- the control unit 107 controls the operation of the control device 100 by reading and executing a control program stored in the storage unit 106.
- the control unit 107 is realized by, for example, one or a plurality of processors.
- the control unit 107 operates as a parameter, and thus functions as a parameter acquisition unit 171, a correlation calculation unit 172, a power consumption prediction unit 173, a threshold value calculation unit 174, and a charge / discharge control unit 175.
- the parameter acquisition unit 171 uses information used by the control device 100 for controlling the operation of the power conditioner 200 such as the power consumption performance data 161, the external environment information 162, the internal environment information 163, and the storage battery performance information 165, for example, the server 300, Obtained from an external device such as the information terminal 400.
- the correlation calculation unit 172 performs a calculation for estimating the correlation between the temperature and the power consumption of the facility 800 based on the power consumption record data 161 and the external environment information 162. Further, the correlation calculation unit 172 performs a calculation for estimating the correlation between the operation results of the power consuming devices in the facility 800 and the power consumption in the facility 800 based on the power consumption record data 161 and the internal environment information 163. .
- the power consumption prediction unit 173 predicts the time change of the power consumption of the facility 800 based on the overall power consumption of the facility 800, the actual value of the power consumption of the power consuming devices installed in the facility 800, and the like.
- the power consumption prediction unit 173 uses the correlation between the actual temperature value estimated by the correlation calculation unit 172 and the power consumption of the facility 800, and the predicted temperature data indicated in the external environment information 162. The predicted value of is calculated.
- the power consumption prediction unit 173 determines the facility based on the correlation between the operation results of the power consumption devices in the facility 800 and the power consumption of the facility 800 and the information on the operation plan of the power consumption devices indicated in the internal environment information 163. A predicted value of 800 power consumption is calculated.
- the threshold value calculation unit 174 is based on the information acquired by the parameter acquisition unit 171 and the power consumption record data 161, and the upper limit set value of power supplied from the system to the facility 800 (power consumption threshold value for performing peak cut). To decide. Specifically, the threshold value calculation unit 174 determines the upper limit setting value based on the predicted power consumption value of the facility 800 predicted by the power consumption prediction unit 173. For example, the threshold value calculation unit 174 may define the minimum value of the upper limit set value in order to peak-cut power consumption that is greater than or equal to a certain value. In addition, the threshold value calculation unit 174 may use a certain ratio (for example, 80%) of the predicted power consumption value of the facility 800 predicted by the power consumption prediction unit 173 as the upper limit setting value. By doing this, the upper limit value can be changed each time based on external environment information such as temperature, or internal environment information such as production plan, etc., and peak leveling can be performed more effectively. To realize. This further stabilizes the power supply of the power supplier.
- the charge / discharge control unit 175 controls the charge / discharge of the storage battery 500 by controlling the power conditioner 200.
- the power conditioner 200 receives supply of power from the system via the power meter 101.
- the charge / discharge control unit 175 sets the power consumption of the facility 800 to the upper limit so that the upper limit of the power supplied from the system to the facility 800 is set to the upper limit set value determined by the threshold value calculation unit 174.
- the power charged in the storage battery 500 is supplied to the facility 800.
- FIG. 3 is a diagram illustrating a data structure of the internal environment information 163 stored in the control device 100.
- each record of the internal environment information 163 associates facility identification information 163A, date 163B, production target 163C, and production quantity 163D.
- the facility identification information 163A is information for identifying each facility managed by the control device 100.
- the date and time 163B indicates the date and time when the production specified in the facility 800 as a production plan is performed.
- the production target 163C indicates an object produced in the facility 800 when the facility 800 is a factory.
- the production number 163D indicates the number of products to be produced as the production target 163C. That is, the internal environment information 163 indicates which power consuming equipment (production machine) in the facility 800 is operated and how much (production number) is operated in order to produce which product. And related information.
- FIG. 4 is a diagram showing a data structure of the storage battery performance information 165 stored in the control device 100.
- each record of storage battery performance information 165 associates a use period 165A, a charge / discharge count actual value 165B, a charge / discharge guarantee count 165C, and a guarantee period 165D.
- the control device 100 updates the charge / discharge number actual value 165B every time the storage battery 500 is charged / discharged by the power conditioner 200.
- the control device 100 updates the usage period 165A while the storage battery 500 continues to operate.
- the use period 165A indicates a period (usage period) that has elapsed since the use of the storage battery 500 was started.
- the charging / discharging actual value 165B indicates the actual number of times that the storage battery 500 has been charged and discharged.
- the number of charge / discharge guarantees 165C indicates the number of times that the storage battery 500 can be charged / discharged, which is defined in advance by the manufacturer of the storage battery 500.
- the warranty period 165D indicates a period (guarantee period) for guaranteeing the use of the storage battery 500, which is defined in advance by the manufacturer of the storage battery 500.
- FIG. 5 shows that the control device 100 charges / discharges the storage battery 500 by setting an upper limit set value for peak cut based on at least one of information on the external environment of the facility 800 and information on the internal environment of the facility 800. It is a figure which shows the operation
- the horizontal axis indicates the passage of time
- the vertical axis indicates the predicted value or the actual measurement value of the power consumption of the facility 800.
- the control device 100 sets an upper limit setting value based on at least one of information related to the external environment of the facility 800 or information related to the internal environment every day, and based on the set upper limit setting value.
- the charge / discharge control of the storage battery 500 is performed, but the frequency of setting the upper limit set value is not limited to one day.
- the control device 100 functions as a supply control unit by functioning as a correlation calculation unit 172, a power consumption prediction unit 173, a threshold value calculation unit 174, and a charge / discharge control unit 175. For example, on the date “A month B”, the control device 100 predicts the predicted temperature “Tmp_B (° C.)” as the external environment information 162 at the location of the facility 800 or the production plan “Prd_B ( ) ”. When the power consumption prediction unit 173 generates power consumption prediction data for the date “A month B day”, the control device 100 determines the upper limit set value “Th_B” using the threshold value calculation unit 174.
- the charge / discharge control unit 175 discharges power from the storage battery 500 to the facility 800 when the power consumption of the facility 800 exceeds the upper limit set value “Th_B” on the date “A month B day”. In other words, the control device 100 causes the storage battery 500 to be charged with the power necessary for the discharge prior to the discharge of the power from the storage battery 500 to the facility 800.
- control device 100 sets the upper limit setting value based on at least one of the information related to the external environment of the facility 800 or the information related to the internal environment and performs charge / discharge control of the storage battery 500 every day.
- the level of power supplied from the grid to the facility 800 can be cut and leveled, and the power supply by the power supply company is further stabilized.
- FIG. 6 is a diagram illustrating an example of processing in which the control device 100 calculates the correlation based on the power consumption actual data 161 and the external environment information 162 and predicts the power consumption based on the predicted temperature.
- FIG. 6A shows a plot of the actual power consumption value indicated in the actual power consumption data 161 and the actual temperature data value indicated in the external environment information 162.
- the maximum value of the power consumption at each temperature is shown in FIG. Based on this, a formula indicating the relationship between temperature and power consumption is derived.
- an expression indicating the relationship between the temperature and the power consumption is obtained so as to exceed the power consumption at each temperature.
- the value of power consumption on the vertical axis indicates the maximum value (kW) of power consumption per day.
- the correlation between the average electric energy (kWh) and the temperature may be calculated.
- FIG. 6B shows an example in which the control device 100 obtains the maximum value of power consumption for each temperature zone based on the power consumption result data 161 and the external environment information 162.
- the width of the temperature zone is divided into intervals of 2 ° C.
- the control device 100 uses the maximum value in each section to predict power consumption based on the predicted temperature. Further, as illustrated in the example of FIG. 6B, the control device 100 may designate the temperature zone width as the use range.
- the power consumption is predicted based on the predicted temperature using the actual power consumption value in the section from the temperature “12 ° C.” to the temperature “28 ° C.”.
- FIG. 6C illustrates an example in which the control device 100 calculates a linear expression of peak power with respect to temperature by cutting out the width of the temperature zone as a use range, as illustrated in FIG. 6B.
- the horizontal axis indicates the temperature
- the vertical axis indicates the peak value of power consumption in each temperature zone.
- the control device 100 has an expression for the peak power with respect to the temperature (in FIG. 6C, in the range from the temperature “12 ° C.” to the temperature “28 ° C.” in the example of FIG. 6C).
- a linear expression may be calculated.
- the broken line indicates the actual peak power consumption with respect to the temperature.
- FIG. 6C the broken line indicates the actual peak power consumption with respect to the temperature.
- a straight line is a linear expression obtained by approximating a broken line to a straight line, and this linear expression indicates the relationship of peak power to temperature.
- the control unit 100 the temperature range, such as the coefficient of determination R 2 of the approximate straight line is calculated as a linear expression of the peak power becomes a maximum, it may be calculated first-order equation of peak power.
- the control apparatus 100 is good also as calculating the formula which shows the relationship of the peak electric power with respect to temperature not only with a temporary formula but with another polynomial and another relational expression.
- the control device 100 predicts the power consumption of the facility 800 based on the information on the predicted temperature by calculating the correlation between the temperature and the power consumption in this way.
- the control apparatus 100 with respect to the prediction result of the power consumption of the facility 800, the predicted value (Wp) of the peak power value, the maximum peak power (Wmax) in the actual result, and the target cut amount (Cp) specified by the user Based on the above, an upper limit set value (Th) is calculated. That is, the control device 100 may calculate the upper limit set value by the following [Equation 1].
- FIG. 7 is a flowchart showing a process in which the control device 100 controls charging / discharging of the storage battery 500 based on at least one of information related to the external environment of the facility 800 and information related to the internal environment.
- the control apparatus 100 performs the process shown in FIG. 7 for every day, for example, it is not restricted to this.
- step S ⁇ b> 701 the control device 100 causes the parameter acquisition unit 171 to use the temperature information (actual value and predicted value) at the location of the facility 800 as information related to the external environment of the facility 800 or the facility as information related to the internal environment of the facility 800.
- Operation results and operation plans (for example, production plan information of production machines) of 800 power consuming devices are acquired from the server 300 or the like.
- step S ⁇ b> 703 the control device 100 causes the correlation calculation unit 172 to correlate information related to the external environment of the facility 800 and the actual power consumption (correlation between the actual temperature and actual power consumption), or the interior of the facility 800. At least one of the correlation between the environmental information and the actual power consumption (correlation between the actual production plan and the actual power consumption) is calculated.
- step S705 the control device 100 uses the power consumption prediction unit 173 to calculate the correlation calculated in step S703 and the predicted temperature (external environment information 162) or production plan (internal environment information 163).
- the power consumption of the facility 800 is predicted.
- step S ⁇ b> 707 the control device 100 determines an upper limit set value for peak cutting of power by the threshold value calculation unit 174.
- step S709 the control device 100 uses the charge / discharge control unit 175 to supply the power charged in the storage battery 500 to the facility 800 so that the power supplied from the system does not exceed the upper limit set value (threshold value) determined in step S707.
- the power conditioner 200 is controlled so as to be supplied to the inverter.
- the power control system of the second embodiment determines whether to execute the charge / discharge control of the power conditioner 200 described in the first embodiment in accordance with the change in the performance of the storage battery 500. Thereby, charging / discharging of the storage battery 500 can be controlled so that the guaranteed number of times of charging / discharging of the storage battery 500 can be secured within the range of the guarantee period defined for the storage battery 500.
- FIG. 8 is a flowchart showing the operation of the control device 100 in the power control system of the second embodiment.
- step S706 the control device 100 refers to the storage battery performance information 165, and uses the storage battery 500 based on the usage period of the storage battery 500, the actual value of the number of times the storage battery 500 has been charged and discharged, and the guaranteed number of times of charge and discharge of the storage battery 500.
- control device 100 determines whether or not the predicted life of storage battery 500 exceeds the warranty period of storage battery 500, and when the predicted life exceeds the warranty period (YES in step S708), performs the process of step S709. If not (NO in step S708), the process of step S710 is performed.
- step S710 the control device 100 transfers the upper limit set value from the system to the facility 800 based on the upper limit set value set in advance so that the number of times of charging / discharging the storage battery 500 is not consumed within the warranty period of the storage battery 500.
- the power conditioner 200 is controlled so that the power charged in the storage battery 500 is supplied to the facility 800 so that the supplied power does not exceed.
- the control device 100 performs the determination of the upper limit set value and the charge / discharge control of the storage battery 500 by the power conditioner 200 as described in the first embodiment in a time zone indicated in a predetermined schedule, for example. Also good. That is, the control device 100 peaks at the upper limit set value determined by the power consumption prediction based on the power consumption performance data 161, the external environment information 162, and the internal environment information 163 in the time zone indicated in the predetermined schedule. It is also possible to perform cutting and charge the storage battery 500 or the like regardless of the prediction of power consumption in other time zones. This increases the possibility of avoiding a situation where the storage battery 500 is not charged and peak cut cannot be performed.
- control device 100 sets the upper limit determined by the power consumption prediction based on the power consumption performance data 161, the external environment information 162, and the internal environment information 163 in the time zone indicated in the predetermined first schedule.
- the peak cut and the discharge are performed at the same time, and the charging of the storage battery 500 may be performed regardless of the prediction of the power consumption in the time zone that is not included in either the first schedule or the second schedule. Good.
- control device 100 may perform determination of the upper limit set value and charge / discharge control of the storage battery 500 by the power conditioner 200 as described in the first embodiment within a predetermined time limit. That is, during peak cut operation, discharge within a predetermined time limit is continued, and when the remaining amount of the storage battery 500 is low, the facility 800 is charged from the storage battery 500 with the amount of discharge obtained by the remaining amount of the storage battery 500 / the limited time. It is good also as discharging to.
- the power control system 1 sets an upper limit based on information related to the external environment of the facility 800, information related to the internal environment of the facility 800, and other information in addition to the actual power consumption value.
- a value is set, and discharge of the storage battery 500 can be started when the power consumption of the facility 800 exceeds the upper limit set value.
- the power control system according to the present embodiment is realized by a processor and a program executed on the processor.
- the program for realizing the present embodiment is provided by transmission / reception using a network via a communication interface.
- 100 power control device 200 power conditioner, 300 server, 400 information terminal, 500 storage battery, 600 solar cell string, 700 cloud network, 800 facility, 900 power plant.
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Abstract
Description
図1は、実施の形態1の電力制御システム1の構成を概略的に示すブロック図である。電力制御システム1において、制御装置100は、施設800への電力の供給を制御する。制御装置100は、発電所900が施設800へ供給することができる電力の情報(供給可能電力情報)を、例えばサーバ300から受信して、発電所900が供給可能な最大電力を超えないように、系統電力の施設800への供給を制御する。施設800は、例えば、工場などであり、電力を消費する施設である。施設の種類によって、電力の需要量が異なる。
図2は、制御装置100の構成を示すブロック図である。図2を参照して、制御装置100は、通信部102と、記憶部106と、制御部107とを含む。
図3および図4を参照して、制御装置100に記憶される各種データのデータ構造を説明する。
電力制御システム1の動作について説明する。
Th=Wp×(1-Cp/Wmax)
なお、図6の例では、制御装置100が気温の実績値および予測値と消費電力の実績値とに基づいて上限設定値を算出する例を説明したが、制御装置100が施設800の内部環境に関する情報に基づいて上限設定値を算出する場合も、同様に生産計画の実績値などのパラメータと消費電力とをプロットすること等により、生産計画数などのパラメータと消費電力との相関を示す式を求めることができ、この式と、生産が予定されている数とに基づいて消費電力を予測することができる。
実施の形態2の電力制御システムは、蓄電池500の性能の変化に応じて、実施の形態1で説明したパワーコンディショナ200の充放電制御を実行するか否かを判断する。これにより、蓄電池500について規定されている保証期間の範囲内では蓄電池500の充放電の保証回数を確保できるように蓄電池500の充放電を制御することができる。
制御装置100は、実施の形態1で説明したような上限設定値の決定およびパワーコンディショナ200による蓄電池500の充放電制御を、例えば、予め定められたスケジュールに示される時間帯において実行することとしてもよい。すなわち、制御装置100は、予め定められたスケジュールに示される時間帯においては、消費電力実績データ161、外部環境情報162および内部環境情報163に基づく消費電力の予測によって決定される上限設定値によりピークカットを行い、その他の時間帯においては、消費電力の予測とは関係なく蓄電池500の充電等を行うこととしてもよい。これにより蓄電池500の充電がなくピークカットが行えない事態を回避する可能性が高まる。
以上のように説明した処理を行うことにより、電力制御システム1は、消費電力の実績値の他に、施設800の外部環境に関する情報、施設800の内部環境に関する情報その他の情報に基づいて上限設定値を設定し、施設800の消費電力が上限設定値を超過する場合に蓄電池500の放電を開始することができる。これにより、ピークカットの実行頻度を適切にすることで、ピークカットに失敗しないように蓄電池500の充放電を制御することができ、電力需要家にとっては電力の基本料金を低減させることができる。また、電力供給事業者にとっては、ピーク電力の平準化効果がいっそう高まることが期待できる。
Claims (7)
- 施設への電力の供給を制御するための電力制御システムであって、
前記施設に設置され、電力の供給を受けて充電され、充電された電力を放電することにより、前記施設へ電力を供給するための蓄電池と、
前記施設の消費電力の実績値を記憶するための電力記憶手段と、
前記施設の外部環境に関する情報、または、前記施設の内部環境における電力消費に関連するパラメータの情報の少なくともいずれかを取得する取得手段と、
前記施設について、前記取得手段により取得される情報と、前記電力記憶手段に記憶される前記消費電力の実績値とに基づいて、系統から当該施設へ供給される電力の上限設定値を決定し、前記施設に対し系統から供給される電力の上限を前記上限設定値までとするよう、前記施設の消費電力が前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給する供給制御手段とを含む、電力制御システム。 - 前記取得手段が取得する前記施設の外部環境に関する情報は、前記施設の位置における気温に関する実績データおよび予想気温データを含み、
前記供給制御手段が前記蓄電池に充電された電力を当該施設へ供給することは、前記気温に関する実績データおよび前記施設の消費電力の実績値に基づき前記気温と前記消費電力との関係を推定し、推定結果と、前記取得手段により取得される前記予想気温データとに基づいて前記施設の消費電力の予測値を算出し、算出された予測値に基づいて前記上限設定値を決定し、決定された前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給することを含む、請求項1に記載の電力制御システム。 - 前記取得手段が取得する前記施設の内部環境における電力消費に関連するパラメータの情報は、前記施設において稼動する電力消費機器の稼働実績および稼動計画を示す情報を含み、
前記供給制御手段が前記蓄電池に充電された電力を当該施設へ供給することは、前記電力消費機器の稼働実績および前記施設の消費電力の実績値に基づき前記電力消費機器の稼働実績と前記消費電力との関係を推定し、推定結果と、前記取得手段により取得される前記電力消費機器の稼働計画とに基づいて前記施設の消費電力の予測値を算出し、算出された予測値に基づいて前記上限設定値を決定し、決定された前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給することを含む、請求項1に記載の電力制御システム。 - 前記蓄電池は、充放電の保証回数と、保証期間とが定められており、
前記供給制御手段が前記蓄電池に充電された電力を当該施設へ供給することは、前記蓄電池を使用した使用期間、前記蓄電池が充放電した回数の実績値、および前記保証回数に基づいて前記蓄電池の使用が前記保証回数の範囲内で保証される期間である予測寿命を算出し、算出された予測寿命が前記蓄電池に定められた前記保証期間を上回る場合に、前記施設に対し系統から供給される電力の上限を前記上限設定値までとするよう、前記施設の消費電力が前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給するように構成されている、請求項1に記載の電力制御システム。 - 前記供給制御手段が前記蓄電池に充電された電力を当該施設へ供給することは、予め定められたスケジュールに示される時間帯、または、予め定められた時間内において、前記施設に対し系統から供給される電力の上限を前記上限設定値までとするよう、前記施設の消費電力が前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給することを含む、請求項1に記載の電力制御システム。
- 施設への電力の供給を制御するための制御装置であって、
前記施設には、電力の供給を受けて充電され、充電された電力を放電することにより前記施設へ電力を供給するための蓄電池が設置されており、
前記制御装置は、
前記蓄電池から前記施設への電力の供給を制御する供給制御手段とを備え、
前記供給制御手段は、前記施設の外部環境に関する情報、または、前記施設の内部環境に関する情報の少なくともいずれかと、前記施設の消費電力の実績値とに基づいて決定される、系統から当該施設へ供給される電力の上限設定値を取得して、前記施設に対し系統から供給される電力の上限を前記上限設定値までとするよう、前記施設の消費電力が前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給するように構成されている、制御装置。 - 施設への電力の供給を制御するための方法であって、
前記施設には、蓄電池が設置され、前記蓄電池は、電力の供給を受けて充電され、充電された電力を放電することにより、前記施設へ電力を供給するためものであり、
前記方法は、
制御装置が、前記施設の外部環境に関する情報、または、前記施設の内部環境における電力消費に関連するパラメータの情報の少なくともいずれかを取得するステップと、
制御装置が、前記施設について、前記取得される情報と、前記施設の消費電力の実績値とに基づいて、系統から当該施設へ供給される電力の上限設定値を決定し、前記施設に対し系統から供給される電力の上限を前記上限設定値までとするよう、前記施設の消費電力が前記上限設定値を超える場合に、前記蓄電池に充電された電力を当該施設へ供給させるステップとを含む、方法。
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US11159017B2 (en) | 2018-08-27 | 2021-10-26 | Ekergy Llc | Personal power plant system and methods of inverse energy generation |
US10615610B1 (en) | 2019-05-28 | 2020-04-07 | Ekergy Llc | System and method for efficient charging of multiple battery cassettes |
US10910846B2 (en) | 2019-05-28 | 2021-02-02 | Ekergy Llc | System and method for efficient charging of multiple battery cassettes |
Also Published As
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US10615602B2 (en) | 2020-04-07 |
EP3355435B1 (en) | 2019-12-11 |
US20180262008A1 (en) | 2018-09-13 |
JP6692365B2 (ja) | 2020-05-13 |
EP3355435A1 (en) | 2018-08-01 |
JPWO2017051615A1 (ja) | 2018-07-12 |
EP3355435A4 (en) | 2018-08-15 |
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