WO2023027139A1 - 電力管理装置及び電力管理方法 - Google Patents
電力管理装置及び電力管理方法 Download PDFInfo
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- WO2023027139A1 WO2023027139A1 PCT/JP2022/032006 JP2022032006W WO2023027139A1 WO 2023027139 A1 WO2023027139 A1 WO 2023027139A1 JP 2022032006 W JP2022032006 W JP 2022032006W WO 2023027139 A1 WO2023027139 A1 WO 2023027139A1
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- storage device
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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
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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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
- 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
Definitions
- the present invention relates to a power management device and a power management method.
- VPP Virtual Power Plant
- a power management device that manages one or more facilities controls the distributed power sources installed in the facilities so that the difference between the planned value for the power demand of the facility and the actual value for the power demand of the facility is less than or equal to a predetermined difference.
- VPP Virtual Power Plant
- BCP capacity a predetermined capacity
- main power storage capacity maining power storage capacity
- a power management device includes: a management unit that manages a facility having a power generation device and a power storage device; and a control unit that creates a charge/discharge plan, wherein the two or more charge/discharge controls are performed by discharging the power storage device in a predetermined time interval to suppress the power demand of the facility to a predetermined power or less. and a second control that secures a free capacity of the power storage device in order to charge the power storage device with surplus power of the power generation device.
- a power management method includes the steps of managing a facility having a power generation device and a power storage device; creating a charge/discharge plan, wherein the two or more charge/discharge controls secure the storage capacity of the power storage device in order to suppress the power demand of the facility to a predetermined power or less in a predetermined time interval. and a second control for securing a free capacity of the power storage device in order to charge the power storage device with surplus electric power of the power generation device.
- FIG. 1 is a diagram showing a power management system 1 according to an embodiment.
- FIG. 2 is a diagram showing a facility 100 according to an embodiment.
- FIG. 3 is a diagram showing the power management server 200 according to the embodiment.
- FIG. 4 is a diagram showing the EMS 150 according to the embodiment.
- FIG. 5 is a diagram for explaining an outline of charge/discharge control according to the embodiment.
- FIG. 6 is a diagram for explaining the power storage capacity of the power storage device 120 according to the embodiment.
- FIG. 7 is a diagram for explaining details of charge/discharge control according to the embodiment.
- FIG. 8 is a diagram illustrating a power management method according to an embodiment.
- power management system 1 A power management system according to an embodiment will be described below. As shown in FIG. 1, power management system 1 has facility 100 .
- the power management system 1 may include a power management server 200 and an external server 300.
- FIG. 1 A power management system according to an embodiment will be described below.
- power management system 1 has facility 100 .
- the power management system 1 may include a power management server 200 and an external server 300.
- FIG. 1 A power management system according to an embodiment will be described below.
- the power management system 1 may include a power management server 200 and an external server 300.
- the facility 100, the power management server 200 and the external server 300 are configured to be able to communicate via the network 11.
- the network 11 may include the Internet, may include a dedicated line such as a VPN (Virtual Private Network), or may include a mobile communication network.
- the facility 100 is interconnected with the power system 12 and may be supplied with power from the power system 12 or may be supplied with power to the power system 12 .
- Power from power system 12 to facility 100 may be referred to as tidal power, purchased power, or demand power.
- Power from facility 100 to power system 12 may be referred to as reverse flow power or sold power.
- FIG. 1 as the facility 100, facilities 100A to 100C are illustrated.
- the facility 100 may be a facility such as a residence, a facility such as a store, or an office.
- Facility 100 may be an apartment complex containing two or more residences.
- the facility 100 may be a complex facility including at least two or more facilities of residences, shops, and offices. Details of facility 100 will be described later (see FIG. 2).
- the power management server 200 may be managed by a business operator such as a local power company.
- a local power company may be a power company operated by a municipality or the like.
- the power management server 200 is a server managed by businesses such as a power generation business, a power transmission and distribution business, a retail business, and a resource aggregator.
- the resource aggregator may be a power company that adjusts the power supply and demand balance of the power grid 12 in a VPP (Virtual Power Plant).
- the adjustment of the power supply and demand balance may include trading (hereinafter referred to as negawatt trading) in which the reduced power of the facility 100 (tidal power) is exchanged for value. Adjusting the power supply and demand balance may include trading increased power of reverse flow power for value.
- the resource aggregator may be an electric power company that provides reverse flow power to power generation companies, power transmission/distribution companies, retailers, and the like in the VPP.
- the power management server 200 may manage information on power outages in the facility 100 (hereinafter referred to as planned power outage information).
- the planned power outage information may include information on a predetermined planned power outage.
- the planned power outage information may include information indicating the time zone in which the planned power outage occurs.
- the external server 300 is a server that manages various information.
- the external server 300 is a server that manages weather information.
- the external server 300 may manage information on the power generated (output power) of the solar cell device 110 (hereinafter referred to as power generation influence information).
- the power generation influence information may include weather information, temperature information, humidity information, solar radiation amount information, and the like.
- the external server 300 may manage information on power outages in the facility 100 (hereinafter referred to as power outage impact information).
- the blackout impact information may include disaster information such as heavy rain special warning, flood occurrence information, landslide warning information, flood risk information, heavy rain warning, flood warning, flood warning information, flood warning information, heavy rain warning information, and flood warning information. good.
- the facility 100 has a solar cell device 110, a power storage device 120, a fuel cell device 130, a load device 140, and an EMS (Energy Management System) 150.
- Facility 100 may have measurement device 160 , measurement device 161 , measurement device 162 , and measurement device 163 .
- the solar cell device 110 is a distributed power source that generates power according to light such as sunlight.
- the solar cell device 110 is composed of a PCS (Power Conditioning System) and a solar panel.
- the solar cell device 110 may be an example of a power generation device installed at the facility 100 .
- the power storage device 120 is a distributed power source that charges and discharges power.
- the power storage device 120 is composed of PCS and power storage cells.
- power storage device 120 may be an example of a power storage device installed in facility 100 .
- the fuel cell device 130 is a distributed power source that uses fuel to generate power.
- the fuel cell device 130 is composed of PCS and fuel cells.
- the fuel cell device 130 may be a solid oxide fuel cell (SOFC; Solid Oxide Fuel Cell) or a polymer electrolyte fuel cell (PEFC; Polymer Electrolyte Fuel Cell). It may be a type fuel cell (PAFC; Phosphoric Acid Fuel Cell) or a molten carbonate type fuel cell (MCFC; Molten Carbonate Fuel Cell).
- SOFC Solid Oxide Fuel Cell
- PEFC Polymer Electrolyte Fuel Cell
- PAFC Phosphoric Acid Fuel Cell
- MCFC Molten Carbonate Fuel Cell
- the load device 140 is a device that consumes power.
- load devices 140 may include video equipment, audio equipment, refrigerators, washing machines, air conditioners, personal computers, and the like.
- the EMS 150 manages power related to the facility 100.
- EMS 150 may control solar cell device 110 , power storage device 120 , fuel cell device 130 and load device 140 .
- the EMS 150 is exemplified as a device that receives control commands from the power management server 200, but such a device may be called a Gateway or simply a control unit. Details of the EMS 150 will be described later (see FIG. 4).
- the measuring device 160 measures tidal power from the power system 12 to the facility 100 .
- Measurement device 160 may measure reverse power flow from facility 100 to power system 12 .
- the metering device 160 may be a Smart Meter belonging to a power company.
- the measuring device 160 may transmit an information element indicating the measurement result (the integrated value of the power flow or the reverse power flow) at the first interval (for example, 30 minutes) to the EMS 150 at each first interval.
- the measurement device 160 may send an information element to the EMS 150 indicating the measurement results at a second interval (eg, 1 minute) that is shorter than the first interval.
- a second interval eg, 1 minute
- the measuring device 161 measures the output power (generated power) of the solar cell device 110 .
- the measurement device 161 may send an information element to the EMS 150 every second interval indicating the measurement result at a second interval (eg, 1 minute) that is shorter than the first interval.
- a measurement result may be represented by an instantaneous value or an integrated value.
- the measuring device 162 measures the charging power and discharging power of the power storage device 120 .
- Measurement device 162 may send an information element to EMS 150 every second interval indicating the measurement results at a second interval (eg, 1 minute) that is shorter than the first interval.
- a measurement result may be represented by an instantaneous value or an integrated value.
- the measuring device 163 measures the output power (generated power) of the fuel cell device 130 .
- the measurement device 163 may send an information element to the EMS 150 every second interval indicating the measurement result at a second interval (eg, 1 minute) that is shorter than the first interval.
- a measurement result may be represented by an instantaneous value or an integrated value.
- the power management server 200 has a management unit 210, a communication unit 220, and a control unit 230.
- power management server 200 is an example of a power management device. It should be noted that the power management server 200 can communicate with the facility 100 via the network 11, and may be considered as a server that operates on the cloud.
- the management unit 210 is composed of storage media such as SSD (Solid State Drive), HDD (Hard Disk Drive), and non-volatile semiconductor memory, and manages information about the facility 100.
- the information about the facility 100 is the type of the distributed power supply (the solar cell device 110, the power storage device 120, or the fuel cell device 130) provided in the facility 100, the specifications of the distributed power supply provided in the facility 100, and the like.
- the specifications may include the rated power generation of the solar cell device 110, the rated charge/discharge power of the power storage device 120, and the rated output power of the fuel cell device .
- the specifications may include the rated capacity of power storage device 120, the maximum charge/discharge power, and the like.
- the management unit 210 is an example of a management unit that manages the facility 100 having the power generation device (for example, the solar cell device 110) and the power storage device 120.
- the communication unit 220 is configured by a communication module and communicates with the local control device 360 via the network 11.
- the communication module can be a wireless communication module that conforms to standards such as IEEE802.11a/b/g/n/ac/ax, ZigBee, Wi-SUN, LTE, 5G, 6G, and standards such as IEEE802.3 may be a wired communication module conforming to
- the communication unit 220 transmits control commands to the EMS 150.
- the control command is transmitted according to a charge/discharge plan created by control unit 230, which will be described later.
- the control unit 230 may include at least one processor. At least one processor may be configured by a single integrated circuit (IC), or may be configured by a plurality of communicatively connected circuits (such as integrated circuits and/or discrete circuits).
- IC integrated circuit
- communicatively connected circuits such as integrated circuits and/or discrete circuits
- control unit 230 is an example of a control unit that creates a charge/discharge plan for the power storage device based on two or more priority levels of charge/discharge control for different purposes of use of the power storage device 120 .
- the two or more charge/discharge controls are the first control that secures the power storage capacity of the power storage device 120 in order to suppress the power demand of the facility 100 to a predetermined power level or less by discharging the power storage device 120 in a predetermined time interval, and the surplus control of the power generation device. and at least a second control that secures a free capacity of the power storage device 120 in order to charge the power storage device 120 with electric power.
- the predetermined time interval may be, for example, a time interval such as 30 minutes. The details of charge/discharge control will be described later.
- EMS150 has the 1st communication part 151, the 2nd communication part 152, and the control part 153.
- FIG. 4 EMS150 has the 1st communication part 151, the 2nd communication part 152, and the control part 153.
- the first communication unit 151 is configured by a communication module.
- the communication module may be a wireless communication module that conforms to standards such as IEEE802.11a/b/g/n/ac/ax, ZigBee, Wi-SUN, LTE, 5G, 6G, IEEE802.3 or proprietary It may be a wired communication module conforming to a standard such as a dedicated protocol.
- the first communication unit 151 may communicate with the power management server 200 via the network 11.
- the first communication unit 151 may communicate with the external server 300 via the network 11 .
- the second communication unit 152 is configured by a communication module.
- the communication module may be a wireless communication module that conforms to standards such as IEEE802.11a/b/g/n/ac/ax, ZigBee, Wi-SUN, LTE, 5G, 6G, IEEE802.3 or proprietary It may be a wired communication module conforming to a standard such as a dedicated protocol.
- the second communication unit 152 may communicate with the solar cell device 110 and the power storage device 120. Although the signal line is omitted in FIG. 2, the second communication unit 152 may communicate with the load device 140, and communicate with the measuring devices 160, 161, 162, and 163. You may
- Control unit 153 controls the EMS 150.
- Control unit 153 may include at least one processor.
- At least one processor may be composed of a single integrated circuit (IC), or may be composed of two or more circuits communicatively connected (integrated circuits and/or discrete circuits, etc.) .
- the control unit 153 may control the solar cell device 110, the power storage device 120, and the fuel cell device 130.
- the control unit 153 may control the load equipment 140 .
- control unit 153 controls charging and discharging of power storage device 120 based on control commands received from power management server 200 .
- the control command is transmitted from power management server 200 according to a charge/discharge plan created by power management server 200 .
- the charge/discharge control includes two or more charge/discharge controls for different purposes of use of the power storage device 120 .
- an outline of the charge/discharge plan will be described, taking as an example a case where the charge/discharge plan is created in the target section (for example, one day from 0:00 to 24:00).
- charge/discharge control for different purposes of use of the power storage device 120 includes peak cut, surplus charge, remaining amount adjustment, nighttime discharge, planned interpolation, and the like.
- the peak cut is control (discharge control) that suppresses the power demand of the facility 100 to a predetermined power level or less by discharging the power storage device 120 in a predetermined time interval. Peak shaving can be performed during a time period (eg, 8:30-16:30) when the power consumption of facility 100 (eg, power consumption of load device 140) is expected to exceed a predetermined power.
- the surplus charging is control (charging control) for charging the power storage device 120 with the surplus power of the power generation device.
- the surplus power is power obtained by subtracting the power consumption of the facility 100 (for example, the power consumption of the load device 140) from the output power of the solar cell device 110.
- FIG. Surplus charging can be performed during a time period (for example, 5:00-19:00) when it is assumed that the output power of the solar cell device 110 can be obtained.
- Remaining amount adjustment is control for adjusting the remaining amount of electricity stored in power storage device 120 .
- power storage device 120 may include control to discharge the Remaining amount adjustment is performed to charge power storage device 120 before the time when surplus charging is assumed to start (for example, 5:00) when a shortage of surplus power is assumed based on the predicted value of surplus power.
- the surplus power may be identified by the difference between the predicted output power value of the solar cell device 110 and the predicted power consumption value of the facility 100 .
- An excess of surplus power may mean that power storage device 120 cannot be charged with surplus power during a period in which surplus charging can be performed.
- Insufficient surplus power may mean that the power storage device 120 cannot discharge power for suppressing the power demand of the facility 100 to a predetermined power level or less during a time period during which peak cut can be performed.
- the power demand of the facility 100 is power obtained by subtracting the output power of the solar cell device 110 from the power consumption of the facility 100 (for example, the power consumption of the load device 140).
- the remaining amount adjustment includes control to secure the power storage capacity of the power storage device 120 for peak cut.
- the remaining amount adjustment is an example of first control for securing the power storage capacity of the power storage device 120 in order to suppress the power demand of the facility 100 to a predetermined power level or less by discharging the power storage device 120 in a predetermined time interval.
- Remaining amount adjustment includes control to secure a free capacity of power storage device 120 for surplus charging.
- the remaining amount adjustment is an example of the second control that secures the free capacity of the power storage device in order to charge the power storage device 120 with the surplus power of the power generation device.
- Nighttime discharge is control for discharging power storage device 120 when the predicted value of the price of purchased power is assumed to be higher than the threshold.
- the threshold may be defined by user settings. Nighttime discharge can be performed during a time period suitable for discharging power storage device 120 (for example, 15:30-22:30).
- Plan interpolation is control for interpolating the charge/discharge plan of power storage device 120 .
- planned interpolation is control of charging and discharging of power storage device 120 when peak shaving, excess charging, and nighttime discharging are not performed.
- Plan interpolation can be performed in a target section (for example, one day from 0:00 to 24:00) in which a charge/discharge plan is created.
- the capacity of the power storage device 120 may include a first capacity and a second capacity.
- the first capacity is a capacity related to power discharged by peak cut.
- the first capacity is the power storage capacity secured by the first control.
- the second capacity is a capacity related to the power charged by the surplus charge.
- the second capacity is the free space secured by the second control.
- the capacity of the power storage device 120 may include capacity related to power used in an emergency (hereinafter referred to as BCP (Business Continuity Plan) capacity) in addition to the first capacity and the second capacity.
- BCP Business Continuity Plan
- the emergency is a disconnection state in which the facility 100 is disconnected from the power system 12 (for example, a power failure state).
- the power management server 200 may create a charge/discharge plan for the power storage device 120 at a first timing, and correct the charge/discharge plan for the power storage device 120 at a second timing after the first timing.
- the first timing may be 6:00 on the day before the target section.
- the second timing may be immediately before the target section or during the target section.
- charge/discharge control for different purposes of use of the power storage device 120 includes, in addition to the above-described peak cut, surplus charge, remaining amount adjustment, nighttime discharge, planned interpolation, etc., start/stop, control Includes plan change, post-power outage measures, pre-power outage measures, imbalance adjustment, etc.
- Activation/deactivation includes control for activating power storage device 120 and control for deactivating power storage device 120 . Start/stop is executed by manual operation in the target section.
- the control plan change is control for changing the charging/discharging plan of the power storage device 120 .
- Control plan change is executed manually in the target section.
- the post-power failure countermeasures include control to discharge the power storage device 120 in an emergency such as a power failure.
- the post-power failure countermeasures may include control to charge power storage device 120 with surplus power when there is surplus power in an emergency.
- Post-power outage measures are executed in real time when an emergency such as a power outage occurs. Blackouts may include rolling blackouts.
- Post-power outage countermeasures may be implemented using BCP capacity.
- the countermeasure before power failure is control to charge the power storage device 120 in order to secure the BCP capacity.
- the BCP capacity may be determined based on the length of the power outage and the predicted power consumption of the facility 100 during the power outage.
- the BCP capacity may be predetermined.
- the countermeasure before power failure is an example of a third control that secures the power storage capacity of power storage device 120 in order to discharge power used in an emergency. Pre-outage countermeasures are executed in real time before an emergency such as a power outage occurs.
- Imbalance adjustment is control that reduces the difference between the planned value and the actual value for the power demand of the facility 100 .
- the imbalance adjustment is an example of fourth control that secures at least one of the storage capacity and the free capacity of the power storage device 120 in order to suppress the deviation from the planned value of the power demand of the facility 100 to a threshold value or less. Imbalance adjustment is performed in real time in the target section.
- the peak cut is control (discharge control) that suppresses the power demand of the facility 100 to a predetermined power level or less by discharging the power storage device 120 in a predetermined time interval.
- the peak cut plan may be created the day before the target section (for example, the first timing described above).
- the peak shaving plan is corrected at a timing (e.g., the above-mentioned second timing) that is a predetermined time (e.g., 3 hours) before the unit time (e.g., 30 minutes) that is assumed to require peak shaving. good too.
- Remaining amount adjustment is control for adjusting the remaining amount of electricity stored in power storage device 120, as described above.
- the remaining amount adjustment may include first control for peak cut, and may include second control for surplus charging.
- the remaining capacity adjustment plan may be created the day before the target section (for example, the first timing described above).
- the remaining amount adjustment plan is corrected at a timing (for example, the above-mentioned second timing) that is a predetermined time (for example, 3 hours) before the unit time (for example, 30 minutes) that is assumed to require remaining amount adjustment.
- Nighttime discharge is control for discharging power storage device 120 when the predicted value of the price of purchased power is assumed to be higher than the threshold.
- the night discharge plan may be created the day before the target section (for example, the first timing described above).
- the plan for nighttime discharge is corrected at a timing (for example, the above-mentioned second timing) that is a predetermined time (for example, 3 hours) before the unit time (for example, 30 minutes) that is assumed to require nighttime discharge. good too.
- Plan interpolation is control that interpolates the charge/discharge plan for power storage device 120, as described above.
- the plan interpolation plan may be created the day before the target section (for example, the first timing described above).
- the plan for plan interpolation is corrected at a timing (for example, the second timing described above) that is a predetermined time (for example, 3 hours) before the unit time (for example, 30 minutes) that is assumed to require plan interpolation. good too.
- a to F are defined as the priority of each charge/discharge control.
- FIG. 7 exemplifies a case where the priority is higher in the order of A ⁇ B ⁇ C ⁇ D ⁇ E ⁇ F. That is, A has the highest priority and F has the lowest priority.
- the power management server 200 creates a charging/discharging plan for the power storage device 120 based on the predicted output power value of the solar cell device 110 and the predicted power consumption value of the facility 100 . Further, power management server 200 creates a charge/discharge plan for power storage device 120 based on the priority of each charge/discharge control. The power management server 200 may create a charge/discharge plan for the power storage device 120 at a first timing, and correct the charge/discharge plan for the power storage device 120 at a second timing after the first timing. The power management server 200 may divide the target section into unit times (for example, 30 minutes) and create and correct the charge/discharge plan for each unit time.
- unit times for example, 30 minutes
- the priority of peak cut, remaining amount adjustment (first control) and remaining amount adjustment (second control) are all C (or E), but these charge/discharge controls have the following priorities.
- the priority of peak cut may be higher than the priority of remaining amount adjustment (first control) and remaining amount adjustment (second control).
- the priority of the remaining amount adjustment (first control) may be the same as the priority of the remaining amount adjustment (second control), or may be higher than the priority of the remaining amount adjustment (second control), The priority may be lower than that of remaining amount adjustment (second control).
- the priority of the remaining amount adjustment (first control) and the priority of the remaining amount adjustment (second control) may be determined based on the value generated by suppressing the power demand of the facility 100 and the value of the surplus power of the power generation device. good.
- the value generated by suppressing the power demand of facility 100 is the value obtained by peak cut.
- the value obtained by peak cut is defined by the amount of loss that occurs when the power demand of facility 100 exceeds a predetermined power. In other words, the smaller the amount of loss, the greater the value obtained by peak cutting.
- the value of the surplus power of the generator is the value obtained from surplus charging.
- the value obtained by surplus charging may be the difference between the price of purchased power suppressed by surplus charging and the price of selling surplus power in the case where surplus charging is not performed. In such a case, if the price of the purchased power is lower than the price of the sold power, it is more advantageous to flow the surplus power in reverse. second control) may not be performed. That is, the priority of remaining amount adjustment (second control) may be the lowest.
- the value obtained by surplus charging may be environmental value.
- the environmental value may be the value obtained in the CO 2 emissions (rights) trading market.
- the priority of residual amount adjustment (second control) may be higher than that of residual amount adjustment (first control).
- the priority of the charge/discharge control assumed at the second timing may be higher than the priority of the charge/discharge control assumed at the first timing (eg, the day before). That is, the priority of peak cut, remaining amount adjustment (first control), remaining amount adjustment (second control), night discharge and planned interpolation assumed on the previous day is the peak cut assumed on the day, remaining amount adjustment ( first control), residual amount adjustment (second control), night discharge, and plan interpolation.
- FIG. 7 does not refer to the priority of surplus charging, it is assumed that surplus charging will be performed when there is free space in the power storage device 120 and there is surplus power.
- the priority of surplus charging may be C, similar to peak cut or the like. It should be noted that surplus charging is not performed at the same time as peak cut.
- the power management server 200 may receive the actual value of power demand or power consumption of the facility 100 from the facility 100 (for example, the measuring device 160).
- the power management server 200 may receive the actual output power value of the solar cell device 110 from the facility 100 .
- the power management server 200 may receive predicted values of power demand or power consumption of the facility 100 from the facility 100 (eg, the measuring device 160).
- the power management server 200 may receive the predicted output power of the solar cell device 110 from the facility 100 .
- the power management server 200 may receive power generation influence information, power outage influence information, and the like from the external server 300 .
- step S12 the power management server 200 creates a charge/discharge plan for the power storage device 120 based on the predicted value of the output power of the solar cell device 110 and the predicted value of the power consumption of the facility 100.
- the priority of each charge/discharge control is used.
- Step S12 is an example of the first timing.
- the power management server 200 transmits a control command to the facility 100 according to the charge/discharge plan created at step S12.
- the control command may be transmitted for each target section, or may be transmitted for each unit time included in the target section.
- steps S10 to S14 may be considered to be processing executed before the target section.
- the power management server 200 may receive the actual value of power demand or power consumption of the facility 100 from the facility 100 (for example, the measuring device 160).
- the power management server 200 may receive the actual output power value of the solar cell device 110 from the facility 100 .
- the power management server 200 may receive from the facility 100 the latest information on the predicted value of power demand or power consumption of the facility 100 .
- the power management server 200 may receive the latest information on the predicted value of the output power of the solar cell device 110 from the facility 100 .
- the power management server 200 may receive the latest information such as power generation impact information and power outage impact information from the external server 300 .
- step S22 the power management server 200 corrects the charge/discharge plan for the power storage device 120 based on the actual value of the output power of the solar cell device 110 and the actual value of the power consumption of the facility 100.
- the power management server 200 may correct the charge/discharge plan for the power storage device 120 based on the latest information on the predicted output power value of the solar cell device 110 and the latest information on the predicted power consumption value of the facility 100 .
- the priority of each charge/discharge control is used in the correction of the charge/discharge plan for power storage device 120 .
- Step S22 is an example of the second timing.
- the power management server 200 transmits a control command to the facility 100 according to the charge/discharge plan corrected at step S22.
- the control command may be transmitted for each target section, or may be transmitted for each unit time included in the target section.
- steps S20 to S24 may be considered to be processing executed during the target section.
- the power management server 200 creates a charge/discharge plan for the power storage device 120 based on two or more priority levels of charge/discharge control for different purposes of use of the power storage device 120 .
- Two or more priorities of charge/discharge control include first control for peak cut and second control for surplus charging. According to such a configuration, peak cut and excess charging are not executed at the same time. By setting the priority, the charging/discharging plan for power storage device 120 can be created appropriately.
- creation and correction are used as different terms, but since there is only a difference in timing, correction may be read as creation. Creation and correction may be read as formulating.
- the first control does not include peak cut, but the concept of the first control may include peak cut.
- the second control does not include excessive charging, but the concept of the second control may include excessive charging.
- the charge/discharge control of power storage device 120 may be autonomously executed by EMS 150 .
- imbalance adjustment may be performed autonomously by EMS 150 in a second period (eg, 1 minute).
- the predicted value of the power demand of the facility 100 may be predicted by learning the past power demand.
- Learning may include the time of day, day of the week, season, weather (insolation, temperature, humidity, etc.) in addition to the past power demand.
- Learning may be machine learning or deep learning represented by AI (Artificial Intelligence).
- the predicted value of the output power of the solar cell device 110 may be predicted by learning past output power.
- Learning may include the time of day, day of the week, season, weather (insolation, temperature, humidity, etc.) in addition to the past power demand.
- Learning may be machine learning or deep learning represented by AI.
- the power management server 200 is illustrated as an example of a power management device.
- the power management device may be EMS 150 .
- the output power of the fuel cell device 130 may be taken into account in creating the charge/discharge plan for the power storage device 120.
- the fuel cell device 130 may be treated as a power generation device like the solar cell device 110.
- the output power of the fuel cell device 130 may be assumed to be the rated output power.
- the power plant may be one or more power plants selected from among fuel cell, wind power, hydro power, geothermal and biomass power plants.
- EMS 150 may be provided by a cloud service implemented by a server or the like provided on network 11 .
- power may be an instantaneous value (W/kW) or an integrated value per unit time (Wh/kWh).
- the above disclosure may have the following problems and effects.
- the purpose of using the power storage device is to charge the power storage device with surplus power from a power generation device such as a solar battery device (hereinafter referred to as surplus charging purpose), and the peak power in a predetermined time interval (for example, 30 minutes) is below the threshold. It is conceivable for the purpose of discharging from the power storage device the electric power for suppressing the power consumption (hereinafter referred to as peak cut purpose).
- SYMBOLS 1 Power management system, 11... Network, 12... Power system, 100... Facility, 110... Solar cell device, 120... Power storage device, 130... Fuel cell device, 140... Load device, 150... EMS, 151... First communication Unit, 152...Second communication unit, 153...Control unit, 160...Measuring device, 161... Measuring device, 162... Measuring device, 163... Measuring device, 200... Power management server, 210... Management unit, 220... Communication unit, 230...control unit, 300...external server
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Abstract
Description
(電力管理システム)
以下において、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に示すように、電力管理システム1は、施設100を有する。電力管理システム1は、電力管理サーバ200及び外部サーバ300を含んでもよい。
以下において、実施形態に係る施設について説明する。図2に示すように、施設100は、太陽電池装置110と、蓄電装置120と、燃料電池装置130と、負荷機器140と、EMS(Energy Management System)150と、を有する。施設100は、測定装置160と、測定装置161と、測定装置162と、測定装置163と、を有してもよい。
以下において、電力管理サーバについて説明する。図3に示すように、電力管理サーバ200は、管理部210と、通信部220と、制御部230と、を有する。実施形態では、電力管理サーバ200は、電力管理装置の一例である。なお、電力管理サーバ200は、ネットワーク11を介して施設100と通信可能であり、クラウド上で動作するサーバであると考えてもよい。
以下において、実施形態に係るEMSについて説明する。図4に示すように、EMS150は、第1通信部151と、第2通信部152と、制御部153と、を有する。
以下において、実施形態に係る充放電制御の概要について説明する。充放電制御は、蓄電装置120の互いに異なる使用目的のための2以上の充放電制御を含む。ここでは、対象区間(例えば、0:00-24:00までの1日)において充放電計画が作成されるケースを例に挙げて、充放電計画の概要について説明する。
以下において、実施形態に係る充放電制御の詳細について説明する。ここでは、対象区間(例えば、0:00-24:00までの1日)において充放電計画が作成されるケースを例に挙げて、充放電計画の概要について説明する。さらに、電力管理サーバ200は、蓄電装置120の充放電計画を第1タイミングで作成し、蓄電装置120の充放電計画を前記第1タイミングよりも後の第2タイミングで補正してもよい。例えば、第1タイミングは、対象区間の前日の6:00であってもよい。第2タイミングは、対象区間の直前であってもよく、対象区間中であってもよい。
以下において、実施形態に係る電力管理方法について説明する。
実施形態では、電力管理サーバ200は、蓄電装置120の互いに異なる使用目的のための2以上の充放電制御の優先度に基づいて、蓄電装置120の充放電計画を作成する。2以上の充放電制御の優先度は、ピークカットのための第1制御及び余剰充電のための第2制御を含む。このような構成によれば、ピークカット及び余剰充電が同時に実行されることはないものの、その準備のための制御(第1制御及び第2制御)が矛盾する可能性があることに鑑み、その優先度を設定することによって、蓄電装置120の充放電計画を適切に作成することができる。
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 (8)
- 発電装置及び蓄電装置を有する施設を管理する管理部と、
前記蓄電装置の互いに異なる使用目的のための2以上の充放電制御の優先度に基づいて、前記蓄電装置の充放電計画を作成する制御部と、を備え、
前記2以上の充放電制御は、所定時間区間において前記蓄電装置の放電によって前記施設の需要電力を所定電力以下に抑制するために前記蓄電装置の蓄電容量を確保する第1制御と、前記発電装置の余剰電力を前記蓄電装置に充電するために前記蓄電装置の空き容量を確保する第2制御と、を少なくとも含む、電力管理装置。 - 前記第1制御及び第2制御の優先度は、前記施設の需要電力の抑制によって生じる価値及び前記発電装置の余剰電力の価値に基づいて定められる、請求項1に記載の電力管理装置。
- 前記第1制御の優先度は、前記第2制御の優先度よりも高い、請求項1に記載の電力管理装置。
- 前記制御部は、前記蓄電装置の充放電計画を第1タイミングで作成し、前記蓄電装置の充放電計画を前記第1タイミングよりも後の第2タイミングで補正し、
前記第2タイミングで想定する充放電制御の優先度は、前記第1タイミングで想定する充放電制御の優先度よりも高い、請求項1乃至請求項3のいずれか1項に記載の電力管理装置。 - 前記第1制御は、前記所定時間区間において前記蓄電装置の放電によって前記施設の需要電力を所定電力以下に抑制する制御を含む、請求項1乃至請求項4のいずれか1項に記載の電力管理装置。
- 前記第2制御は、前記発電装置の余剰電力を前記蓄電装置に充電する制御を含む、請求項1乃至請求項5のいずれか1項に記載の電力管理装置。
- 前記2以上の充放電制御は、非常事態で用いる電力を放電するために前記蓄電装置の蓄電容量を確保する第3制御、及び、前記施設の需要電力に関する計画値に対する乖離を閾値以下に抑制するために前記蓄電装置の蓄電容量及び空き容量の少なくともいずれか1つを確保する第4制御の少なくともいずれか1つの制御を含む、請求項1乃至請求項6のいずれか1項に記載の電力管理装置。
- 発電装置及び蓄電装置を有する施設を管理するステップと、
前記蓄電装置の互いに異なる使用目的のための2以上の充放電制御の優先度に基づいて、前記蓄電装置の充放電計画を作成するステップと、を備え、
前記2以上の充放電制御は、前記施設の需要電力を所定時間区間において所定電力以下に抑制するために前記蓄電装置の蓄電容量を確保する第1制御と、前記発電装置の余剰電力を前記蓄電装置に充電するために前記蓄電装置の空き容量を確保する第2制御と、を少なくとも含む、電力管理方法。
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JP2010268602A (ja) * | 2009-05-14 | 2010-11-25 | Ntt Facilities Inc | 蓄電池充放電装置及び蓄電池充放電方法 |
JP2016100956A (ja) * | 2014-11-20 | 2016-05-30 | 株式会社Nttドコモ | 直流電源の制御装置、直流電源システム、および直流電源の制御装置の制御方法 |
JP2018191434A (ja) | 2017-05-08 | 2018-11-29 | 株式会社日立製作所 | 蓄電池運用装置及び蓄電池運用方法 |
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JP2016100956A (ja) * | 2014-11-20 | 2016-05-30 | 株式会社Nttドコモ | 直流電源の制御装置、直流電源システム、および直流電源の制御装置の制御方法 |
JP2018191434A (ja) | 2017-05-08 | 2018-11-29 | 株式会社日立製作所 | 蓄電池運用装置及び蓄電池運用方法 |
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