WO2013168814A1 - エネルギー管理装置、エネルギー管理方法およびプログラム - Google Patents
エネルギー管理装置、エネルギー管理方法およびプログラム Download PDFInfo
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- WO2013168814A1 WO2013168814A1 PCT/JP2013/063225 JP2013063225W WO2013168814A1 WO 2013168814 A1 WO2013168814 A1 WO 2013168814A1 JP 2013063225 W JP2013063225 W JP 2013063225W WO 2013168814 A1 WO2013168814 A1 WO 2013168814A1
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- Prior art keywords
- power
- target value
- amount
- sold
- energy management
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- 238000007726 management method Methods 0.000 title claims description 31
- 230000005611 electricity Effects 0.000 claims abstract description 32
- 238000010248 power generation Methods 0.000 claims description 29
- 230000001932 seasonal effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 13
- 230000002441 reversible effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 230000003442 weekly effect Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
-
- 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
-
- 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
- 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
-
- H02J3/382—
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S50/00—Market activities related to the operation of systems integrating technologies related to power network operation or related to communication or information technologies
- Y04S50/10—Energy trading, including energy flowing from end-user application to grid
Definitions
- the present disclosure relates to an energy management apparatus, an energy management method, and a program that can effectively perform power sale using, for example, a solar power generation system.
- Patent Document 1 describes that the length of a power outage period is taken into account when selecting an electric device to be supplied with power by a private power generator during a commercial power outage. For example, when the power failure period is short, the refrigeration unit is kept stopped, whereas when the power failure period is long, the refrigeration unit is stopped and normal operation is alternately performed. .
- Patent Document 2 when power is supplied from a battery to an electric device at the time of a power failure, the electric device is divided into four groups according to priority in advance, and the priority of the battery is considered in consideration of the remaining capacity of the battery. It is described that power supply is limited in order from the lowest.
- Patent Document 3 describes performing optimal power control based on a user's lifestyle in a system using a power generation system and a power storage system.
- Patent Document 4 discloses a technology for switching between power sale to the grid side and storage as energy (storage to the battery) of a photovoltaic power generation facility linked to the grid.
- a solar power generation system is installed in homes, etc., and a purchase system in which electric power companies purchase generated power is widely used.
- the purchase system includes a total purchase system that purchases all of the power generated by solar power generation and a purchase system that purchases the remaining power (referred to as surplus power) that is obtained by subtracting the amount of power consumed from the power generated by solar power generation. is there.
- the surplus power purchase system is the current system.
- Patent Document 1 and Patent Document 2 described above when priority is set in advance in units of electrical equipment and power is restricted when a power outage occurs, power supply is restricted from electrical equipment with lower priority. ing. Therefore, Patent Document 1 and Patent Document 2 do not have a description about controlling power sale in association with power saving of electric equipment. Similarly, Patent Document 3 and Patent Document 4 have no description about controlling power sale and electric power saving in relation to each other.
- the power consumption of the electric device is controlled from the viewpoint of power failure countermeasures and power saving, but the control of the power consumption of the electric device is not considered from the viewpoint of power sale. Setting a target for the amount of power sold and being aware that the amount of power sold reaches the target value can increase the motivation for power saving.
- the present disclosure is intended to provide an energy management device, an energy management method, and a program that can clarify the purpose of power saving because power saving is performed so that the amount of power sold reaches a target value.
- the present disclosure is configured to sell surplus power generated by a power generation device, Set a target value for the amount of electricity sold in a given period, Predict whether the amount of electricity sold will reach the target value, When it is predicted that the target value will not be reached, the energy management device performs power limitation according to the priority order set for a plurality of electrical devices.
- the present disclosure is configured to sell surplus power generated by the power generation device, Set a target value for the amount of electricity sold in a given period, Predict whether the amount of electricity sold will reach the target value, In the energy management method, power is limited in accordance with the priority order set for a plurality of electric devices when it is predicted that the target value will not be reached.
- the present disclosure is configured to sell surplus power generated by the power generation device, Set a target value for the amount of electricity sold in a given period, Predict whether the amount of electricity sold will reach the target value, When it is predicted that the target value will not be reached, this is a program that causes a computer to execute an energy management method that limits power according to the priority order set for a plurality of electrical devices.
- power consumption is controlled so that the amount of power sold reaches a target value, and power saving is actively performed.
- FIG. 1 is a block diagram of a first embodiment of the present disclosure.
- FIG. 2 is a schematic diagram for use in describing the control according to the first embodiment of the present disclosure.
- FIG. 3 is a flowchart used to describe the control according to the first embodiment of the present disclosure.
- FIG. 4 is a flowchart used for describing the control according to the second embodiment of the present disclosure.
- FIG. 5 is a flowchart used for describing the control according to the third embodiment of the present disclosure.
- FIG. 1 An example of a power system to which the present disclosure can be applied, for example, a home power system, will be described with reference to FIG.
- a power line is introduced into the building from the outdoor distribution line through the lead-in line, and the power line is connected to a forward tidal watt-hour meter (indicated simply as a meter in FIG. 1) 1.
- the system power supply is indicated by a symbol 4 for AC power supply.
- the forward flow watt-hour meter 1 measures the amount of electric power purchased.
- the forward power watt-hour meter 1 uses the value obtained by dividing the integrated power amount (kWh) obtained by integrating the instantaneous power for 30 minutes by 30 minutes as the demand power (kW).
- a reverse flow watt-hour meter 2 (simply referred to as a meter in FIG. 1) is connected to the forward flow watt-hour meter 1.
- the reverse power flow watt-hour meter 2 measures the amount of power sold.
- a distribution board 3 is connected to the output side of the reverse flow watt-hour meter 2.
- the reverse flow watt-hour meter 2 measures the amount of power in the same manner as the forward flow watt-hour meter 1.
- the power generated by the solar cell 5 is supplied to the power conditioner 6.
- the power conditioner 6 converts the unstable DC output voltage of the solar cell 5 into a stable DC voltage, and further converts the DC voltage into an AC voltage.
- the power conditioner 6 performs control (Maximum Power Point Tracking (MPPT)) to always follow the maximum power point following the fluctuation of the power generated by the solar cell.
- MPPT Maximum Power Point Tracking
- the output is supplied to the distribution board 3 via the total power generation meter 7 (simply referred to as a meter in FIG. 1) and the solar breaker 8.
- the total power generation meter 7 is connected to the solar power generation system. The amount of electric power generated is measured, and the amount of electric power measured by the total generated electric energy meter 7 is measured in the same manner as the forward tidal current energy meter 1.
- the total power generation amount and the private power consumption amount have the following relationship.
- [In-house power consumption] [Total power generation]-[Reverse power flow]
- Distribution board 3 has a configuration in which a contract breaker, an earth leakage breaker, and a branch breaker are connected in order from the reverse flow watt-hour meter 2 side.
- the contract breaker is for automatically stopping electricity when a current exceeding the contract with the power company flows.
- the earth leakage breaker is used to detect electricity leakage in indoor wiring and electric appliances and automatically cut off electricity.
- the branch breaker is attached to each branch circuit that sends electricity from the distribution board 3 to each room. This is for automatically shutting off electricity when a short circuit occurs due to a failure of an electric appliance or wiring, and an overcurrent flows.
- a plurality of electric devices 9 1 , 9 2 ,..., 9 n for the indoor wiring from the branch breaker of the distribution board 3 (referred to simply as the electric device 9 when it is not necessary to distinguish them) Is connected.
- Each of these electric devices 9 is provided with a controller 10 1 to 10 n for control (in the case where it is not particularly necessary to distinguish these, simply referred to as a controller 10).
- the controller 10 transmits a control signal to the electric device 9 by wireless communication, for example, and controls the operation of the electric device 9.
- a network based on a wireless communication standard such as a wireless LAN (Local Area Network), Bluetooth (registered trademark), or ZigBee can be used.
- Bluetooth registered trademark
- ZigBee uses the physical layer of IEEE (Institut of Electric and Electronics Engineers) 802.15.4.
- IEEE 802.15.4 is the name of a short-range wireless network standard called PAN (Personal Area Network) or W (Wireless) PAN.
- the controller 10 can remotely control the operation state of the electric device 9 such as power on / off.
- the controller 10 is connected to the communication unit 12 via the communication path 11.
- the communication path 11 is, for example, a home network.
- the communication unit 12 is connected to the control unit 13.
- the communication path 11 may be a wireless communication path.
- the control unit 13 controls the power limit (power saving) according to the power sale amount and the target value, and is specifically a home gateway (home server).
- the control unit 13 includes a CPU that performs various calculation / control processes, a storage unit (ROM (Read Only Memory), RAM (Random Access Memory), etc.) that stores a database, a program, and the like, and information between the control unit 13 and the outside.
- An input / output interface for controlling the input / output of the device and a clock.
- a user operation input is supplied from the input unit 16 to the CPU through the input / output interface, and necessary information is supplied to the display unit 17 and displayed.
- the control part 13 can perform remote control of operation
- a GPS (Global Positioning System) 18 as a position detection unit is connected to the control unit 13.
- the control unit 13 can be connected to an external network such as the Internet 15 via the communication unit 14, and can acquire various types of information such as weather information from the Internet 15.
- the control unit 13 transmits the position information detected by the GPS 18 to a site that provides weather information through the Internet 15. From the site, weather information of the area indicated by the position information, for example, weekly weather forecast (sunny weather / cloudy / rain information, temperature / humidity information, etc.) is transmitted. Information on the weather forecast acquired in this way is stored in the storage unit of the control unit 13.
- the measured value of the forward flow watt-hour meter 1 and the measured value of the reverse flow watt-hour meter 2 are supplied to the control unit 13.
- the measurement data of these watt-hour meters is transmitted to the control unit 13 by wireless communication.
- the measurement data is used to control the amount of power sold so as to reach the target value, and is also used for display on the display unit 17 connected to the control unit 13.
- the target value of the power sale amount is supplied from the memory 19 to the control unit 13.
- the target value is set by the user operating the input unit 16. Further, the target value is adjusted to an appropriate value in consideration of seasonal factors and the like in addition to the user's setting. For example, sunshine hours are taken into consideration, and a lower target value is set in a season with a short sunshine time, and a higher target value is set in a season with a long sunshine time. Such adjustment is automatically performed by the control unit 13.
- the target value is set every predetermined period. For example, the target value is set on a monthly basis.
- a priority order for performing the power limitation when the power is limited is determined in advance.
- the power limitation includes disconnection (off) of power supply and intermittent supply of power.
- power supply is on
- the case where the operation mode of the electrical device is the energy saving mode is also one mode of power limitation.
- power consumption can be reduced by lowering the set temperature during heating, and power consumption can be reduced by increasing the set temperature during cooling.
- FIG. 2 shows an example of the power saving mode.
- domestic electrical equipment is divided into three groups.
- the first group of electrical devices should not be turned off, such as security-related devices such as electronic locks, telephones, and the like.
- the electrical equipment of the second group is a target for power saving, and can be operated with low power consumption (energy saving operation).
- Air conditioners, television receivers and the like are included in the second group.
- the electrical equipment of the third group is a target for power saving, energy-saving operation is impossible, and power consumption can be reduced only by turning off the power.
- AV (audio / visual) devices other than television receivers are included in the third group.
- the illumination that can be adjusted in brightness is included in the second group, and the illumination that cannot be adjusted in brightness is included in the third group.
- Power saving mode A 1st group (power-on), 2nd group (energy-saving operation), 3rd group (power-on): The rate of reducing the power consumption is small.
- Power saving mode B 1st group (power on), 2nd group (energy saving operation), 3rd group (power off): The rate of reducing the amount of power consumption is medium.
- Power-saving mode C 1st group (power on), 2nd group (power off), 3rd group (power off): The ratio which reduces power consumption is large.
- the user sets the grouping of the electrical devices 9 in advance.
- the control unit 13 can set any one of these power saving modes.
- any one of the power saving modes is set in advance. That is, the user selects the power saving mode according to the target value of the power sale amount.
- the priority order described above is an example, and the electrical devices may be classified into a larger number of groups, or the priority order may be set for each electrical device.
- the set priority order is stored in a memory in the control unit 13.
- Step S1 A target value for the amount of power sold is set.
- a monthly target value is set by a user operation or automatically.
- the target value is appropriately set in consideration of the change in daylight hours, the number of family members, and the like.
- Step S2 The control unit 13 is supplied with measurement data from the reverse flow watt-hour meter 2.
- the control unit 13 integrates the data on the power sale amount every predetermined period. It is monitored whether or not the amount of power sold reaches the target value set in step S1, and it is determined whether or not it is difficult to achieve the target. For example, when about half of the month has passed, if the target achievement rate (the integrated value / target value of the amount of power sold up to that point) has not reached 50%, it is determined that it is difficult to achieve. This determination is made at predetermined intervals, for example, for one hour. Note that it may be determined whether it is difficult to achieve with the progress rate in the third embodiment described later.
- Step S3 If it is determined that the target achievement rate is not difficult as a result of the determination in step S2, normal power use is performed. That is, there is no power limitation.
- Step S4 If it is determined that the target achievement rate is difficult as a result of the determination in step S2, the power saving mode is entered. Among the power saving modes A, B, and C described above, power saving is performed according to a power saving mode selected in advance.
- Step S5 It is determined whether a predetermined period has elapsed. For example, it is determined whether one month has passed. If it is determined that it has not elapsed, the process returns to step S2 (whether it is difficult to achieve the target). When it is determined that the predetermined period has elapsed, the control for one month is ended, and the integrated value of the power sale amount is reset. Then, the next month's processing is started.
- the user can set the target value of the power sale amount, and the power limiting operation is automatically performed so that the power sale amount reaches the target value. Since a plurality of power saving modes having different power consumption amounts are prepared, the power saving mode can be selected in association with the setting of the target value. Therefore, since power limitation is performed according to the user's own intention, there is an advantage that the power limitation reflecting the user's intention is possible.
- Step S11 A target value for the amount of power sold is set. For example, a monthly target value is set by a user operation or automatically. As described above, the target value is appropriately set in consideration of the change in daylight hours, the number of family members, and the like.
- Step S12 The control unit 13 monitors whether or not the power sale amount reaches the target value set in step S11, and determines whether it is difficult to achieve the target. For example, when about half of the month has passed and the target achievement rate has not reached 50%, it is determined that it is difficult to achieve. This determination is made at predetermined intervals, for example, for one hour.
- Step S13 If it is determined as a result of the determination in step S12 that the target achievement rate is not difficult, normal power use is performed.
- Step S14 If the target achievement rate is determined to be difficult as a result of the determination in step S12, the degree of difficulty is determined. That is, it is determined whether the degree of difficulty is large. The power saving mode is selected according to the determination result of step S14.
- Step S15 If it is determined that the difficulty level is not large as a result of the determination in step S14, the power saving mode A is selected. That is, in the power saving mode, the power saving mode A having the smallest power consumption reduction amount is selected.
- Step S16 If the degree of difficulty is determined as a result of the determination in step S14, the power saving mode C is selected. That is, in the power saving mode, the power saving mode C having the largest power consumption reduction amount is selected.
- step S5 it is determined whether or not a predetermined period, for example, one month has passed, as in the process (step S5) in the first embodiment. If it is determined that the time has not elapsed, the process returns to step S12 (determination of whether it is difficult to achieve the target). When it is determined that the predetermined period has elapsed, the control for one month is ended, and the integrated value of the power sale amount is reset. Then, the next month's processing is started.
- a predetermined period for example, one month has passed
- the user can set the target value of the power sale amount, and the power limiting operation is automatically performed so that the power sale amount reaches the target value. Is made. Furthermore, the degree of difficulty in achieving the target is determined, and power saving modes having different degrees of reduction in power consumption are automatically selected. Therefore, similarly to the first embodiment, in addition to being able to limit power reflecting the user's will, there is an advantage that the inconvenience experienced by the user at the time of power limitation can be reduced as much as possible. .
- Step S21 A target value for the amount of power sold is set. For example, a monthly target value is set by a user operation or automatically. As described above, the target value is appropriately set in consideration of the change in daylight hours, the number of family members, and the like.
- Step S22 It is determined whether there is a lot of fine weather based on weather information, for example, a weekly weather forecast.
- the control unit 13 transmits position information to a predetermined site through the Internet 15, and acquires weekly weather forecast information from the predetermined site.
- the percentage of clear sky can be estimated from this weekly weather forecast. For example, when the ratio of sunny days is 50% or more in one week, it is estimated that there are many sunny days.
- Step S23 If it is determined in step S22 that there is a lot of sunny, it is determined whether or not the progress rate with respect to the target value of the power sale amount is greater than 100%.
- Step S24 When the progress rate is determined to be greater than 100% in step S23, normal power use is performed. That is, the progress rate is greater than 100%, and there is much clearness in the next week, so it is expected that there is little possibility that the power generation amount of the solar power generation system will be reduced, and thus no power limitation is performed.
- Step S25 In step S23, if it is determined that the progress rate is 100% or less, the power is limited. As the power saving mode, a pre-selected one among the power saving modes A, B, and C is used.
- Step S26 In this week's weather forecast, if it is determined that there are few sunny days, it is determined whether or not the progress rate is greater than 120%.
- Step S27 If the progress rate is determined to be greater than 120% in step S26, normal power use is performed. That is, since the ratio of sunny days in the future week is small and the power generation amount of the solar power generation system may be reduced, the determination value of whether or not the power sales amount can achieve the target is made higher. If it is greater than this value, normal power usage is made. On the other hand, if it is determined in step S26 that the progress rate is 120% or less, power is limited in step S25. As the power saving mode, a pre-selected one among the power saving modes A, B, and C is used.
- step S5 it is determined whether or not a predetermined period, for example, one month has passed, as in the process (step S5) in the first embodiment. If it is determined that the time has not elapsed, the process returns to step S22 (determining whether the weekly weather forecast is sunny). When it is determined that the predetermined period has elapsed, the control for one month is ended, and the integrated value of the power sale amount is reset. Then, the next month's processing is started.
- a predetermined period for example, one month has passed
- the user can set the target value of the power sale amount, and the power limiting operation is automatically performed so that the power sale amount reaches the target value. Is made. Furthermore, the amount of power sold for the next week is predicted with reference to the information of the weekly weather forecast. Therefore, as in the first embodiment, in addition to being able to limit power reflecting the user's will, there is an advantage that the prediction accuracy of the power sale amount can be increased.
- the unit of the power sale amount is not limited to the power amount, and the amount of power sale may be used.
- the power saving amount CO2 reduction amount
- a battery may be provided. In the event of a power failure, power is supplied to the electrical equipment by the battery. When the remaining capacity of the battery is small, the amount of power generated by the solar power generation system may be used for charging the battery.
- this indication can also take the following structures.
- the energy management device according to any one of (1), (2), and (3), wherein the power generation device is a solar power generation device, and the weather forecast information is information related to a degree of sunshine.
- the energy management device When predicting whether the amount of electricity sold will reach the target value, predict the difficulty level, The energy management device according to any one of (1), (2), (3), and (4), wherein the degree of power limitation is changed according to the degree of difficulty to achieve.
- the power limit is the energy management device according to any one of (1), (2), (3), (4), and (5), which is a combination of power-off of the electric device and energy-saving operation of the electric device.
- the power storage device is charged with the generated power of the power generation device (1) (2) (3) (4) (5) (6 )
- the energy management device according to any one of the above.
- Surplus power generated by the power generator is sold, Set a target value for the amount of electricity sold in a given period, Predict whether the amount of electricity sold will reach the target value, An energy management method for performing power limitation according to a priority order set for a plurality of electrical devices when it is predicted that the target value will not be reached.
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Abstract
Description
所定期間における売電量の目標値を設定し、
売電量が目標値に達するかどうかを予測し、
目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理装置である。
本開示は、発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が目標値に達するかどうかを予測し、
目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理方法である。
本開示は、発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が目標値に達するかどうかを予測し、
目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理方法をコンピュータに対して実行させるプログラムである。
図2は、本開示の第1の実施の形態の制御の説明に使用するための略線図である。
図3は、本開示の第1の実施の形態の制御の説明に使用するフローチャートである。
図4は、本開示の第2の実施の形態の制御の説明に使用するフローチャートである。
図5は、本開示の第3の実施の形態の制御の説明に使用するフローチャートである。
以下の説明は、下記の順序にしたがってなされる。
<1.第1の実施の形態>
<2.第2の実施の形態>
<3.第3の実施の形態>
<4.変形例>
「システム構成」
図1を参照して本開示を適用できる電力システム例えば家庭の電力システムの一例について説明する。屋外の配電線から引き込み線を通じて建物内に電力線が導入され、電力線が順潮流電力量計(図1では、単にメータと表記する)1に接続される。図1においては、系統電源が交流電源の記号4で示されている。順潮流電力量計1は、買電の電力量を計測するものである。例えば順潮流電力量計1は、瞬時電力を30分間積算して得られる積算電力量(kWh)を30分で割った値を需要電力(kW)としている。
〔自家消費電力量〕=〔総発電電力量〕−〔逆潮流電力量〕
売電の対象となるのは、逆潮流電力量である。すなわち、
〔逆潮流電力量〕=〔総発電電力量〕−〔自家消費電力量〕
である。したがって、売電量を増やすためには、自家消費電力量を少なくする節電が必要とされる。
節電モードA:第1グループ(電源オン)、第2グループ(省エネ運転)、第3グループ(電源オン):消費電力量を低下させる割合が小さい。
節電モードB:第1グループ(電源オン)、第2グループ(省エネ運転)、第3グループ(電源オフ):消費電力量を低下させる割合が中程度である。
節電モードC:第1グループ(電源オン)、第2グループ(電源オフ)、第3グループ(電源オフ):消費電力量を低下させる割合が大きい。
図3のフローチャートを参照して、制御部13によってなされる第1の実施の形態における制御について説明する。
ステップS1:売電量の目標値が設定される。例えば月単位の目標値がユーザ操作または自動的に設定される。目標値は、上述したように、日照時間の変化、家族の人数等を加味して適切に設定される。
ステップS4:ステップS2の判定の結果、目標達成率が困難であると判定されると、節電モードに入る。上述した節電モードA、B、Cの内で、予め選択されている節電モードにしたがって節電がなされる。
「第2の実施の形態の制御」
第2の実施の形態の電力管理システムの構成は、第1の実施の形態と同様である。制御部13によってなされる電力管理が第1の実施の形態におけるものと相違している。図4のフローチャートを参照して、制御部13によってなされる第2の実施の形態における制御について説明する。
ステップS11:売電量の目標値が設定される。例えば月単位の目標値がユーザ操作または自動的に設定される。目標値は、上述したように、日照時間の変化、家族の人数等を加味して適切に設定される。
ステップS14:ステップS12の判定の結果、目標達成率が困難であると判定されると、困難の程度が判定される。すなわち、困難度が大きいかどうかが判定される。ステップS14の判定の結果に応じて節電モードが選択される。
ステップS16:ステップS14の判定の結果、困難度が大きいと判定されると、節電モードCが選択される。すなわち、節電モードの中で、最も消費電力の削減量が大きい節電モードCが選択される。
「第3の実施の形態の制御」
第3の実施の形態の電力管理システムの構成は、第1の実施の形態と同様である。制御部13によってなされる電力管理が第1の実施の形態におけるものと相違している。図5のフローチャートを参照して、制御部13によってなされる第3の実施の形態における制御について説明する。
ステップS21:売電量の目標値が設定される。例えば月単位の目標値がユーザ操作または自動的に設定される。目標値は、上述したように、日照時間の変化、家族の人数等を加味して適切に設定される。
(その時点までの売電量の積算値/補正目標値)
(補正目標値=目標値×(その時点までの経過時間/所定期間(例えば一カ月)の総時間)
ステップS25:ステップS23において、進捗率が100%以下と判定されると、電力制限がなされる。節電モードとしては、節電モードA、B、Cの中の予め選択されたものが使用される。
ステップS27:ステップS26において、進捗率が120%より大と判定されると、通常の電力使用がなされる。すなわち、今後の1週間の晴れの日にちの割合が少なく、太陽光発電システムの発電量が低下するおそれがあるので、売電量が目標を達成できるかどうかの判定の値がより高くされる。この値より大とされる場合には、通常の電力使用がなされる。
一方、ステップS26の判定において、進捗率が120%以下と判定されると、ステップS25において、電力制限がなされる。節電モードとしては、節電モードA、B、Cの中の予め選択されたものが使用される。
以上、本開示の実施の形態について具体的に説明したが、上述の各実施の形態に限定されるものではなく、本開示の技術的思想に基づく各種の変形が可能である。例えば、上述の実施の形態において挙げた構成、方法、工程、形状、材料および数値などはあくまでも例に過ぎず、必要に応じてこれと異なる構成、方法、工程、形状、材料および数値などを用いても良い。
(1)
発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が前記目標値に達するかどうかを予測し、
前記目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理装置。
(2)
前記目標値を季節的要因に応じて設定する(1)に記載のエネルギー管理装置。
(3)
売電量が前記目標値に達するかどうかを予測する場合に、天気予報情報を使用する(1)および(2)の何れかに記載のエネルギー管理装置。
(4)
前記発電装置が太陽光発電装置であり、前記天気予報情報が日照の程度に関する情報である(1)(2)(3)の何れかに記載のエネルギー管理装置。
(5)
売電量が前記目標値に達するかどうかを予測する場合に、達成困難度を予測し、
前記達成困難度に応じて電力制限の程度を変化させる(1)(2)(3)(4)の何れかに記載のエネルギー管理装置。
(6)
前記電力制限は、電気機器に対する電源のオフと、電気機器の省エネルギー運転とを組み合わせたものである(1)(2)(3)(4)(5)の何れかに記載のエネルギー管理装置。
(7)
売電量が前記目標値に達するのが比較的容易と予測される場合に、前記発電装置の発電電力でもって蓄電装置を充電する(1)(2)(3)(4)(5)(6)の何れかに記載のエネルギー管理装置。
(8)
発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が前記目標値に達するかどうかを予測し、
前記目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理方法。
(9)
発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が前記目標値に達するかどうかを予測し、
前記目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理方法をコンピュータに対して実行させるプログラム。
2・・・逆潮流電力量計
3・・・分電盤
5・・・太陽電池
7・・・総発電電力量計
9,91~9n・・・電気機器
10,101~10n・・・コントローラ
13・・・制御部
Claims (9)
- 発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が前記目標値に達するかどうかを予測し、
前記目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理装置。 - 前記目標値を季節的要因に応じて設定する請求項1に記載のエネルギー管理装置。
- 売電量が前記目標値に達するかどうかを予測する場合に、天気予報情報を使用する請求項1に記載のエネルギー管理装置。
- 前記発電装置が太陽光発電装置であり、前記天気予報情報が日照の程度に関する情報である請求項3に記載のエネルギー管理装置。
- 売電量が前記目標値に達するかどうかを予測する場合に、達成困難度を予測し、
前記達成困難度に応じて電力制限の程度を変化させる請求項1に記載のエネルギー管理装置。 - 前記電力制限は、電気機器に対する電源のオフと、電気機器の省エネルギー運転とを組み合わせたものである請求項1に記載のエネルギー管理装置。
- 売電量が前記目標値に達するのが比較的容易と予測される場合に、前記発電装置の発電電力でもって蓄電装置を充電する請求項1に記載のエネルギー管理装置。
- 発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が前記目標値に達するかどうかを予測し、
前記目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理方法。 - 発電装置により発生する余剰電力を売電するようになされ、
所定期間における売電量の目標値を設定し、
売電量が前記目標値に達するかどうかを予測し、
前記目標値に達しないと予測される場合に、複数の電気機器に関して設定されている優先順位にしたがって電力制限を行うエネルギー管理方法をコンピュータに対して実行させるプログラム。
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