WO2013047116A1 - 電力管理システム、電力管理方法及び上位電力管理装置 - Google Patents
電力管理システム、電力管理方法及び上位電力管理装置 Download PDFInfo
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- WO2013047116A1 WO2013047116A1 PCT/JP2012/072509 JP2012072509W WO2013047116A1 WO 2013047116 A1 WO2013047116 A1 WO 2013047116A1 JP 2012072509 W JP2012072509 W JP 2012072509W WO 2013047116 A1 WO2013047116 A1 WO 2013047116A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
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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
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/58—The condition being electrical
- H02J2310/60—Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
Definitions
- the present invention relates to a power management system, a power management method, and a higher-level power management apparatus for reducing the power consumption of loads provided to a plurality of customers.
- a distributed power source for example, a power generation device using clean energy such as solar light, wind power, geothermal heat, etc. can be considered.
- a fuel cell such as SOFC (Solid Oxide Fuel Cell) can be considered.
- the power company who manages the power grid A power suppression signal (DR; Demand Response) instructing suppression of consumption is transmitted to each power management device, and each power management device reduces the power consumption of the load in response to the power suppression signal (for example, Patent Literature 1).
- the power suppression signal indicates the amount of reduced power that each customer should reduce (for example, the ratio of the power to be reduced to the current power consumption, or the absolute value of the power to be reduced to the current power consumption) It is a signal.
- the total amount of electric power consumption may be reduced regardless of the amount of reduced electric power of the individual connected to the electric power system.
- the convenience of a plurality of consumers (power management devices) also needs to be considered.
- An object of the present invention is to provide a power management device.
- the power management system includes a plurality of lower power management devices provided for each of a plurality of consumers, and a higher power management device that manages the plurality of lower power management devices.
- Each lower power management apparatus transmits, to the upper power management apparatus, power information including power consumption of a load connected to each lower power management apparatus.
- the upper power management apparatus is configured to reduce power information including a reduction amount of power to be reduced by each customer according to the power control signal transmitted from the power company managing the power system and the power information. Send to
- each lower power management apparatus transmits, to the upper power management apparatus, the power information including power consumption for each category to which a load connected to each lower power management apparatus belongs.
- the category has a priority.
- the upper power management apparatus determines the amount of power reduction to be reduced by each customer so as to preferentially reduce the power consumption of the load belonging to the low priority category.
- each lower power management apparatus reduces power consumption of a load connected to each lower power management apparatus according to the reduction information received from the upper power management apparatus.
- the power suppression signal includes a reduced power amount to be reduced from a current power consumption amount of a load connected to the power system.
- the upper power management apparatus determines the amount of power reduction to be reduced by each customer according to a coefficient corresponding to the contract of the maximum current value available to each customer.
- each lower power management apparatus periodically transmits, to the upper power management apparatus, the power information including the amount of power consumption for each category to which the load connected to each lower power management apparatus belongs.
- the power management method according to the second feature is applied to a power management system including a plurality of lower power management devices provided for each of a plurality of consumers and a higher power management device that manages the plurality of lower power management devices.
- the power management method comprises the steps of: transmitting power information including power consumption of a load connected to each lower power management apparatus from each lower power management apparatus to the upper power management apparatus; Transmitting, to each lower-level power management apparatus, reduction information including a reduction amount of power to be reduced by each customer according to the power suppression signal transmitted from the power company managing the power system and the power information And
- the step of transmitting the power information includes, for each upper power management apparatus from each lower power management apparatus, power consumption for each category to which a load connected to each lower power management apparatus belongs. The power information is transmitted.
- each lower power management apparatus further includes a step of reducing power consumption of a load connected to each lower power management apparatus according to the reduction information received from the upper power management apparatus.
- the power suppression signal includes a reduced power amount to be reduced from a current power consumption amount of a load connected to the power system.
- the upper power management apparatus manages a plurality of lower power management apparatuses provided for each of a plurality of consumers.
- the upper power management apparatus receives the power information including the power consumption of the load connected to each lower power management apparatus from each lower power management apparatus, and the power transmitted from the power company managing the power system And a transmitter configured to transmit, to each lower power management apparatus, reduction information including a reduction amount of power to be reduced by each customer according to the suppression signal and the power information.
- the reception unit receives, from each lower power management apparatus, the power information including the power consumption for each category to which the load connected to each lower power management apparatus belongs.
- the power suppression signal includes a reduced power amount to be reduced from a current power consumption amount of a load connected to the power system.
- the present invention it is possible to provide a power management system, a power management method, and a higher-level power management apparatus capable of appropriately suppressing the power consumption of a load provided to each customer.
- FIG. 1 is a diagram showing the configuration of a power management system 100 according to the first embodiment.
- FIG. 2 is a block diagram showing the HEMS 10 according to the first embodiment.
- FIG. 3 is a block diagram showing the CEMS 40 according to the first embodiment.
- FIG. 4 is a sequence diagram showing a power management method according to the first embodiment.
- the power management system includes a plurality of lower power management devices provided for each of a plurality of consumers and a higher power management device that manages the plurality of lower power management devices.
- Each lower power management apparatus transmits, to the upper power management apparatus, power information including power consumption of a load connected to each lower power management apparatus.
- the upper power management apparatus is configured to reduce power information including a reduction amount of power to be reduced by each customer according to the power control signal transmitted from the power company managing the power system and the power information. Send to
- the upper power management apparatus managing a plurality of lower power management apparatuses instructs each lower power management apparatus to reduce power, thereby appropriately suppressing the power consumption of the load provided to each customer. Can.
- FIG. 1 is a diagram showing a power management system 100 according to the first embodiment.
- the power management system 100 includes an HEMS 10, a load group 20, a smart meter 30, a CEMS 40, a grid 50, and a power company 60.
- the HEMS 10 and the load group 20 are provided in the customer 70.
- the HEMS 10 is a device (HEMS: Home Energy Management System) that manages the power of the customer 70.
- the HEMS 10 has a function of controlling the load group 20 using a protocol such as Echonet Lite or ZigBee.
- the HEMS 10 can control the power consumption of the load group 20 by controlling the operation mode of the load group 20.
- HEMS 10A 1 , HEMS 10A 2 , HEMS 10B 1 , and HEMS 10B 2 are provided as the HEMS 10 .
- the HEMS 10 is an example of a lower power management apparatus. The details of the HEMS 10 will be described later (see FIG. 2).
- the load group 20 is a device group that consumes power.
- the load group 20 includes devices such as a refrigerator, a light, an air conditioner, and a television.
- distributed power sources such as storage batteries, photovoltaic power generators (PVs), and fuel cells (SOFCs) may be provided in the customer 70.
- PVs photovoltaic power generators
- SOFCs fuel cells
- the loads included in the load group 20 can be classified into a plurality of categories. Also, each category has a priority.
- loads are classified into three categories (category AC).
- category A is, for example, a category (for example, a refrigerator) to which a load essential to life belongs.
- Category B is a load (for example, lighting, air conditioner) directly connected to life among loads not belonging to category A.
- category C is a load (for example, television) that does not belong to either the category A or the category B.
- the priority of category A is the highest, and the priority of category C is the lowest.
- the category is basically set in advance for each load, but is preferably changeable by the user. For example, even if a certain load category is set as category C at the time of product shipment, it is preferable that the category can be changed to another category according to the usage of the user.
- the HEMS 10 periodically receives and stores, from each load included in the load group 20, information notifying a category to which the load belongs.
- the HEMS 10 selects the category from the load. Receive and store information to notify of changes.
- a load group 20A 1 , a load group 20A 2 , a load group 20B 1 , and a load group 20B 2 are provided as the load group 20.
- HEMS10A 1 and load group 20A 1 is provided on the consumer 70A in 1, HEMS10A 2 and load group 20A 2 is provided consumer 70A 2.
- HEMS10B 1 and load group 20B 1 is provided on the customer 70B in 1, HEMS10B 2 and load group 20B 2 is provided consumers 70B 2.
- the smart meter 30 is basically a meter that measures the power consumed by the load group 20.
- the smart meter 30 has a communication function, and can receive information from the HEMS 10, the CEMS 40, and the grid 50 (the power company 60).
- the smart meter 30 As the smart meter 30, a smart meter 30A 1 , a smart meter 30A 2 , and a smart meter 30B are provided. As shown in FIG. 1, the smart meter 30 may be provided closer to the grid 50 than the CEMS 40, or may be provided closer to the consumer 70 than the CEMS 40.
- the CEMS 40 is a device that manages a plurality of HEMSs 10 (CEMS: Community Energy Management System).
- the CEMS 40 collects information from each HEMS 10 and instructs each HEMS 10 to operate.
- the CEMS 40A and the CEMS 40B are provided as the CEMS 40.
- the CEMS 40 is an example of a higher-level power management device. Details of the CEMS 40 will be described later (see FIG. 3).
- the grid 50 is a power line that supplies power supplied from a power plant or the like to each customer 70.
- the power company 60 is a company that manages the grid 50.
- the customer 70 is a unit managed by one HEMS 10.
- the customer 70 may be a single house or an apartment complex such as an apartment.
- the customer 70 may be a single unit constituting an apartment complex.
- FIG. 2 is a block diagram showing the HEMS 10 (an example of the lower power management apparatus) according to the first embodiment. As shown in FIG. 2, the HEMS 10 has a receiver 11, a transmitter 12, and a controller 13.
- the receiving unit 11 receives various pieces of information from the CEMS 40.
- the receiving unit 11 receives, from the CEMS 40, power reduction information including the reduced power amount to be reduced by each customer 70.
- the power reduction information includes the reduced power amount by category.
- the transmission unit 12 transmits various information to the CEMS 40.
- the transmission unit 12 transmits, to the CEMS 40, classification result information (power information) including power consumption for each category to which the load (load included in the load group 20) connected to the HEMS 10 belongs.
- the amount of power consumption included in the classification result information may be the amount of power that can be reduced for each category.
- the amount of power that can be reduced for each category may be a numerical value manually input by the user, or may be a numerical value calculated by the HEMS 10 based on the usage history of the load stored in the HEMS 10.
- the amount of power that can be reduced for each category is not only the amount of power reduced due to the shutdown of the load, but also the output power from the distributed power supply to the load group 20 May include an amount of power by which the supply from the grid 50 is reduced.
- the control unit 13 controls the HEMS 10 in an integrated manner.
- the control unit 13 controls the load group 20 connected to the HEMS 10 using a signal based on a protocol such as Echonet Lite or ZigBee.
- the control unit 13 can control the power consumption of the load group 20 by controlling the operation mode of the load group 20.
- the control unit 13 transmits a signal to the loads included in the load group 20 to transition to an operation mode capable of reducing power consumption.
- control unit 13 recognizes the category to which the load included in the load group 20 belongs. Further, the control unit 13 grasps the power consumption (current power consumption) of the loads included in the load group 20.
- the control unit 13 grasps the output power from the distributed power supply. Therefore, when reducing the power consumption of the load group 20, the control unit 13 not only stops the operation of the load but also switches at least a part of the power supplied to the load group 20 to the output power from the distributed power supply May be
- FIG. 3 is a block diagram showing the CEMS 40 (an example of the upper power management apparatus) according to the first embodiment.
- the CEMS 40 includes a receiver 41, a transmitter 42, and a controller 43.
- the receiving unit 41 receives various information from the HEMS 10 and the power company 60. First, the reception unit 41 receives a power suppression signal (DR; Demand Response) instructing suppression of power consumption from the power company 60. It should be noted that the amount of reduction specified by the power suppression signal is the amount of power to be reduced among the plurality of customers 70 provided under the CEMS 40.
- DR Demand Response
- the receiving unit 41 receives, from each HEMS 10, classification result information including power consumption for each category to which a load (a load included in the load group 20) connected to the HEMS 10 belongs.
- the transmission unit 42 transmits various information to the HEMS 10.
- the transmission unit 42 transmits, to each HEMS 10, power reduction information including the amount of reduced power to be reduced by each customer 70.
- the power reduction information includes the reduced power amount by category.
- the control unit 43 controls the CEMS 40 in an integrated manner. First, in accordance with the classification result information received from each HEMS 10, the control unit 43 determines whether or not the power suppression specified by the power suppression signal is achieved. Specifically, the control unit 43 determines whether power suppression is achieved by reducing the power consumption of the load, in order from the category with the lowest priority.
- control unit 43 allocates the reduced power amount to be reduced by each customer 70 according to the classification result information including the power consumption amount for each category.
- the customer (i), that is, the reduced power amount R (i) to be reduced by the HEMS (i) is calculated, for example, according to the following procedure.
- a category to which the load belongs a case where categories A to C exist is exemplified.
- the reduced power amount R (i) is calculated by the following equation (1).
- R (i) P C ( i) ⁇ c (i) ⁇ PDR / P C SUM ... formula (1)
- ⁇ P C (i) ⁇ c (i) P C SUM and PDR ⁇ P C SUM
- P C (i) is the amount of power that can be reduced for the load belonging to the category C in the customer (i) (the amount of power consumption included in the classification result information).
- the PDR is a reduction amount of power specified by the power suppression signal, and specifically, is a power amount to be reduced by the plurality of consumers 70 provided under the CEMS 40.
- P C SUM is the total value of the electric energy that can be reduced for the load belonging to category C among the plurality of customers 70 provided under the CEMS 40.
- C (i) is a coefficient corresponding to the contract of the maximum current value available to the customer (i).
- the larger the contracted maximum current value the larger the value of c (i).
- c (i) may be a fixed value (for example, “1”).
- the reduced power amount R (i) is calculated by the following equation (2).
- R (i) P C ( i) + P B (i) ⁇ b (i) ⁇ (PDR-P C SUM) / P B SUM ... formula (2)
- ⁇ P B (i) ⁇ b (i) P B SUM
- P B (i) is the amount of power that can be reduced for the load belonging to category B in customer (i) (the amount of power consumption included in the classification result information).
- P B SUM is the total value of the electric energy that can be reduced for the load belonging to category B in the entire plurality of customers 70 provided under the CEMS 40.
- B (i) is a coefficient corresponding to the contract of the maximum current value available to the customer (i).
- the larger the contracted maximum current value the larger the value of b (i).
- b (i) may be a fixed value (for example, “1”).
- b (i) may be the same value as c (i) or may be a different value from c (i).
- the reduced power amount R (i) is calculated by the following equation (3).
- R (i) P C ( i) + P B (i) + P A (i) ⁇ a (i) ⁇ (PDR-P C SUM-P B SUM) / P A SUM ... Equation (3)
- ⁇ P A (i) ⁇ a (i) P A SUM
- P A (i) is the amount of power that can be reduced for the load belonging to the category A in the customer (i) (the amount of power consumption included in the classification result information).
- P A SUM is the total of a plurality of customers 70 provided under the CEMS40, is the sum of the reducible electric energy for the load belonging to the category A.
- a (i) is a coefficient corresponding to the contract of the maximum current value available to the customer (i). It is preferable that the value of a (i) is larger as the contracted maximum current value is larger.
- a (i) may be a fixed value (for example, “1”).
- a (i) may be the same value as c (i) or b (i), or may be different from c (i) or b (i).
- FIG. 4 is a sequence diagram showing an operation of the CEMS 40 according to the first embodiment.
- step 10 1 the HEMS10 transmits a load information request for requesting the power consumption of the load contained in the load group 20 (the current power consumption) in the load group 20.
- the HEMS10 receives the load information including the power consumption of the load contained in the load group 20 (the current power consumption) from the load group 20.
- the load information includes power consumption for each category.
- step 30 CEMS40 receives from each HEMS10 classification result information including the power consumption of each category (load included in the load group 20) load connected to HEMS10 belongs.
- step 10 2 through Step 30 2 is the same as the process of steps 10 1 to Step 30 1. That is, the CEMS 40 periodically receives classification result information from each HEMS 10.
- step 40 the CEMS 40 receives, from the power company 60, a power suppression signal (DR; Demand Response) instructing suppression of the power consumption.
- DR Demand Response
- step 50 the CEMS 40 allocates the reduced power amount to be reduced by each customer 70 according to the classification result information including the power consumption amount for each category.
- the reduced power amount R (i) is It is calculated.
- the reduced power amount R ( i) is calculated.
- step 60 the CEMS 40 transmits, to each HEMS 10, power reduction information including the amount of reduced power to be reduced by each customer 70. It should be noted that the power reduction information includes the reduced power amount by category.
- each HEMS 10 reduces the power consumption of the loads included in the load group 20 according to the power reduction information received from the CEMS 40.
- the CEMS 40 managing a plurality of HEMSs 10 transmits power reduction information to each HEMS 10 according to classification result information received for each category having a priority.
- the amount of power that can be reduced differs depending on the customer.
- there are consumers who are trying to save electricity from normal times while there are consumers who are not trying to save electricity from normal times. Therefore, if the demand for reduction of the power consumption is uniformly required for the demander, an unfair feeling among the demanders will occur. Therefore, the CEMS 40 managing a plurality of HEMSs 10 reduces the amount of power consumption of each customer 70 in consideration of the amount of power that can be reduced for each customer 70, thereby suppressing the sense of unfairness among the customers. It is possible.
- the power company 60 does not have to consider the electric energy that can be reduced for each customer 70, and the electric energy to be reduced for the entire customer 70 may be specified to the CEMS 40. That is, since the power company 60 does not need the power usage information of each customer 70, there is no need to bear the burden of managing the power usage information of each customer 70. Also for the customer 70, it is preferable from the viewpoint of privacy protection since it is not necessary to provide the power company 60 with its own power usage information.
- the entire power demander 70 transmits the power reduction signal indicating a larger reduction amount (for example, 15%). It is conceivable to reduce the target reduction amount from the current total power consumption.
- the CEMS 40 can achieve the target reduction amount with high certainty by allocating a reduction amount of power that can be reduced for each customer 70. Therefore, the electric power company 60 can achieve the target reduction amount with high certainty because the CEMS 40 allocates a reduction amount of power that can be reduced for each customer 70. Therefore, the power company 60 does not have to make the reduction amount designated by the power suppression signal larger than the target reduction amount.
- the power management system 100 As described above, according to the power management system 100 according to the embodiment, it is possible to appropriately suppress the power consumption of the load provided to each customer.
- the power reduction information is transmitted according to the classification result information including the power consumption for each category having the priority, the power consumption of the load belonging to the low priority category is sequentially reduced, and the category with the high priority The reduction of the power that should be supplied to the load that is necessary for life is suppressed.
- the HEMS 10 is illustrated as the lower power management apparatus and the CEMS 40 is illustrated as the upper power management apparatus, but the embodiment is not limited to this.
- the upper power management apparatus may manage a plurality of lower power management apparatuses.
- the lower power management apparatus may be managed by the higher power management apparatus.
- the lower power management apparatus may be, for example, a Building and Energy Management System (BEMS), or a Factory Energy Management System (FEMS).
- BEMS Building and Energy Management System
- FEMS Factory Energy Management System
- the CEMS 40 periodically receives classification result information including power consumption for each category from each customer 70.
- the embodiment is not limited to this.
- the CEMS 40 may request each customer 70 to transmit the classification result information in response to the power suppression signal (DR; Demand Response).
- DR power suppression signal
- the present invention it is possible to provide a power management system, a power management method, and a higher-level power management apparatus capable of appropriately suppressing the power consumption of the load provided to each customer.
Abstract
Description
実施形態に係る電力管理システムは、複数の需要家毎に設けられる複数の下位電力管理装置と、複数の下位電力管理装置を管理する上位電力管理装置とを備える。各下位電力管理装置は、各下位電力管理装置に接続される負荷の消費電力量を含む電力情報を前記上位電力管理装置に送信する。前記上位電力管理装置は、電力系統を管理する電力事業者から送信される電力抑制信号及び前記電力情報に応じて、各需要家で削減すべき削減電力量を含む削減情報を各下位電力管理装置に送信する。
以下において、第1実施形態に係る電力管理システムについて説明する。図1は、第1実施形態に係る電力管理システム100を示す図である。
以下において、第1実施形態に係る下位電力管理装置について説明する。図2は、第1実施形態に係るHEMS10(下位電力管理装置の一例)を示すブロック図である。図2に示すように、HEMS10は、受信部11と、送信部12と、制御部13とを有する。
以下において、第1実施形態に係る上位電力管理装置について説明する。図3は、第1実施形態に係るCEMS40(上位電力管理装置の一例)を示すブロック図である。図3に示すように、CEMS40は、受信部41と、送信部42と、制御部43とを有する。
但し、ΣPC(i)×c(i)=PCSUM、かつ、PDR≦PCSUM
ここで、PC(i)は、需要家(i)においてカテゴリCに属する負荷について削減可能な電力量(分類結果情報に含まれる消費電力量)である。PDRは、電力抑制信号によって指定される電力の削減量であり、具体的には、CEMS40の配下に設けられる複数の需要家70の全体で削減すべき電力量である。PCSUMは、CEMS40の配下に設けられる複数の需要家70の全体において、カテゴリCに属する負荷について削減可能な電力量の合計値である。
但し、ΣPB(i)×b(i)=PBSUM、かつ、PDR≦PCSUM+PBSUM
ここで、PB(i)は、需要家(i)においてカテゴリBに属する負荷について削減可能な電力量(分類結果情報に含まれる消費電力量)である。PBSUMは、CEMS40の配下に設けられる複数の需要家70の全体において、カテゴリBに属する負荷について削減可能な電力量の合計値である。
但し、ΣPA(i)×a(i)=PASUM、かつ、PCSUM+PBSUM<PDR
ここで、PA(i)は、需要家(i)においてカテゴリAに属する負荷について削減可能な電力量(分類結果情報に含まれる消費電力量)である。PASUMは、CEMS40の配下に設けられる複数の需要家70の全体において、カテゴリAに属する負荷について削減可能な電力量の合計値である。
以下において、第1実施形態に係る電力管理方法について説明する。図4は、第1実施形態に係るCEMS40の動作を示すシーケンス図である。
但し、ΣPC(i)×c(i)=PCSUM
但し、ΣPB(i)×b(i)=PBSUM
但し、ΣPA(i)×a(i)=PASUM
本発明は上述した実施形態によって説明したが、この開示の一部をなす論述及び図面は、この発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなろう。
Claims (14)
- 複数の需要家毎に設けられる複数の下位電力管理装置と、複数の下位電力管理装置を管理する上位電力管理装置とを備える電力管理システムであって、
各下位電力管理装置は、各下位電力管理装置に接続される負荷の消費電力量を含む電力情報を前記上位電力管理装置に送信し、
前記上位電力管理装置は、電力系統を管理する電力事業者から送信される電力抑制信号及び前記電力情報に応じて、各需要家で削減すべき削減電力量を含む削減情報を各下位電力管理装置に送信することを特徴とする電力管理システム。 - 各下位電力管理装置は、各下位電力管理装置に接続される負荷が属するカテゴリ毎の消費電力量を含む前記電力情報を前記上位電力管理装置に送信することを特徴とする請求項1に記載の電力管理システム。
- 前記カテゴリは、優先順位を有しており、
前記上位電力管理装置は、優先順位が低いカテゴリに属する負荷の消費電力を優先して削減するように、各需要家で削減すべき削減電力量を決定することを特徴とする請求項2に記載の電力管理システム。 - 各下位電力管理装置は、前記上位電力管理装置から受信する前記削減情報に応じて、各下位電力管理装置に接続される負荷の消費電力を削減することを特徴とする請求項3に記載の電力管理システム。
- 前記電力抑制信号は、前記電力系統に接続される負荷の現在の消費電力量から削減すべき削減電力量を含むことを特徴とする請求項4に記載の電力管理システム。
- 前記上位電力管理装置は、各需要家が利用可能な最大電流値の契約に対応する係数に応じて、各需要家で削減すべき削減電力量を決定することを特徴とする請求項5に記載の電力管理システム。
- 各下位電力管理装置は、各下位電力管理装置に接続される負荷が属するカテゴリ毎の消費電力量を含む前記電力情報を、定期的に前記上位電力管理装置に送信することを特徴とする請求項5に記載の電力管理システム。
- 複数の需要家毎に設けられる複数の下位電力管理装置と、複数の下位電力管理装置を管理する上位電力管理装置とを備える電力管理システムに適用される電力管理方法であって、
各下位電力管理装置から前記上位電力管理装置に対して、各下位電力管理装置に接続される負荷の消費電力量を含む電力情報を送信するステップと、
前記上位電力管理装置から各下位電力管理装置に対して、電力系統を管理する電力事業者から送信される電力抑制信号及び前記電力情報に応じて、各需要家で削減すべき削減電力量を含む削減情報を送信するステップと、
を備えることを特徴とする電力管理方法。 - 前記電力情報を送信するステップにおいて、各下位電力管理装置から前記上位電力管理装置に対して、各下位電力管理装置に接続される負荷が属するカテゴリ毎の消費電力量を含む前記電力情報を送信することを特徴とする請求項8に記載の電力管理方法。
- 各下位電力管理装置において、前記上位電力管理装置から受信する削減情報に応じて、各下位電力管理装置に接続される負荷の消費電力を削減するステップをさらに備えることを特徴とする請求項9に記載の電力管理方法。
- 前記電力抑制信号は、前記電力系統に接続される負荷の現在の消費電力量から削減すべき削減電力量を含むことを特徴とする請求項10に記載の電力管理方法。
- 複数の需要家毎に設けられる複数の下位電力管理装置を管理する上位電力管理装置であって、
各下位電力管理装置に接続される負荷の消費電力量を含む電力情報を各下位電力管理装置から受信する受信部と、
電力系統を管理する電力事業者から送信される電力抑制信号及び前記電力情報に応じて、各需要家で削減すべき削減電力量を含む削減情報を各下位電力管理装置に送信する送信部とを備えることを特徴とする上位電力管理装置。 - 前記受信部は、各下位電力管理装置に接続される負荷が属するカテゴリ毎の消費電力量を含む前記電力情報を各下位電力管理装置から受信することを特徴とする請求項12に記載の上位電力管理装置。
- 前記電力抑制信号は、前記電力系統に接続される負荷の現在の消費電力量から削減すべき削減電力量を含むことを特徴とする請求項13に記載の上位電力管理装置。
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JP2013536120A JP5922138B2 (ja) | 2011-09-26 | 2012-09-04 | 電力管理システム、電力管理方法及び上位電力管理装置 |
US14/346,958 US9819194B2 (en) | 2011-09-26 | 2012-09-04 | Power management system, power management method, and upper power management apparatus |
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US20140244060A1 (en) | 2014-08-28 |
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