WO2017022173A1 - Power management system, power management device, power management method, and program - Google Patents

Abstract

A power management system (10) is provided with: a first communication unit (31) that acquires the power consumption in a facility (40); a first determination unit (33) that, on the basis of the power consumption acquired by the first communication unit (31), determines a first power that is the minimum power consumption required in the facility (40); a second determination unit (34) that, on the basis of the power consumption acquired by the first communication unit (31), determines a second power that is the normal power consumption in the facility (40); a calculation unit (35) that calculates an amount by which it is possible to cut power consumption in the facility (40) on the basis of the difference between the second power and the first power; and a second communication unit (36) that outputs the calculated amount by which it is possible to cut power consumption.

Description

Power management system, power management apparatus, power management method, and program

The present invention relates to a power management system, a power management apparatus, a power management method, and a program.

In recent years, the spread of demand response (DR: Demand Response) that stabilizes the electric power system by controlling the electrical equipment of the customer during the time when power supply and demand is tight has been studied. For example, Patent Document 1 discloses a power management apparatus that controls an electric device according to the remaining charge of a storage battery when receiving a power reduction request from a server of an aggregator that is a business operator that performs a supply and demand adjustment business. Has been.

JP 2012-205430 A

By the way, DR of a method that unilaterally demands a predetermined amount of power reduction according to past results is known, but in such a method of DR, the amount of power requested for reduction and the actual amount However, there is a problem that the amount of electric power reduced greatly may be greatly different. That is, it is difficult to execute DR stably.

The present invention provides a power management system, a power management apparatus, a power management method, and a program capable of realizing stable DR.

A power management system according to an aspect of the present invention is an acquisition unit that acquires power consumption in a facility, and a power consumption that is minimum required for the facility based on the power consumption acquired by the acquisition unit. A first determination unit that determines one power, a second determination unit that determines second power that is normal power consumption in the facility based on the power consumption acquired by the acquisition unit, and the second power A calculation unit that calculates a reducible amount of power consumption in the facility based on a difference from the first power, and an output unit that outputs the calculated reducible amount.

A power management apparatus according to an aspect of the present invention is an acquisition unit that acquires power consumption in a facility, and a power consumption that is minimum required for the facility based on the power consumption acquired by the acquisition unit. A first determination unit that determines one power, a second determination unit that determines second power that is normal power consumption in the facility based on the power consumption acquired by the acquisition unit, and the second power A calculation unit that calculates a reducible amount of power consumption in the facility based on a difference from the first power, and an output unit that outputs the calculated reducible amount.

The power management method according to one aspect of the present invention acquires power consumption in a facility, determines first power that is the minimum power consumption required for the facility based on the acquired power consumption, and acquires the power The second power that is the normal power consumption in the facility is determined based on the power consumption, and the reduction amount of the power consumption in the facility is determined based on the difference between the second power and the first power. Calculate and output the calculated reduction possible amount.

A program according to an aspect of the present invention is a program for causing a computer to execute the power management method.

The power management system, power management apparatus, power management method, and program according to one embodiment of the present invention can achieve stable DR.

FIG. 1 is a block diagram showing the configuration of the power management system according to the first embodiment. FIG. 2 is a block diagram showing a system configuration of the controller. FIG. 3 is a diagram illustrating a correspondence relationship between the branch circuit stored in the storage unit and the electrical device connected to the branch circuit. FIG. 4 is a diagram for explaining an example of a method for determining the first power and the second power. FIG. 5 is a flowchart of the basic operation of the controller. FIG. 6 is a flowchart of the first operation example. FIG. 7 is a diagram showing an example of a display screen used for specifying the target branch circuit. FIG. 8 is a flowchart of the second operation example. FIG. 9 is a diagram illustrating an example of a display screen on which a determination button for instructing the first power is displayed. FIG. 10 is a flowchart of the operation example 3. FIG. 11 is a flowchart of the operation example 4. FIG. 12 is a block diagram illustrating a configuration of the power management system according to the second embodiment.

Hereinafter, embodiments will be described with reference to the drawings. It should be noted that each of the embodiments described below shows a comprehensive or specific example. The numerical values, shapes, materials, constituent elements, arrangement positions and connecting forms of the constituent elements, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily shown strictly. Moreover, in each figure, the same code | symbol is attached | subjected to substantially the same structure, and the overlapping description may be abbreviate | omitted or simplified.

(Embodiment 1)
[Entire configuration of power management system]
First, the overall configuration of the power management system according to Embodiment 1 will be described. FIG. 1 is a block diagram showing the configuration of the power management system according to the first embodiment.

As shown in FIG. 1, the power management system 10 includes a power measurement device 20, a controller 30, a host server 50, a DR server 60, a power generation device 70, a power storage device 75, and an information communication terminal 90. Prepare. The power measuring device 20, the controller 30, the power generation device 70, and the power storage device 75 are installed in the facility 40. In other words, the facility 40 is a consumer. In FIG. 1, a power system 80 is also illustrated.

The power management system 10 is provided in a facility 40 such as a house, and is a system for managing power consumption (power consumption) of a plurality of electrical devices 23 in the facility 40, controlling the electrical devices 23, and performing DR control. is there. The electrical device 23 is, for example, a lighting device, a refrigerator, a washing machine, or an IH cooking heater. Each of the plurality of electrical devices 23 has a wireless communication function and can perform wireless communication with the controller 30. The facility 40 is, for example, a detached house, but may be an apartment house, a factory, an office building, a commercial facility, or the like.

In the DR control in the power management system 10, when the controller 30 receives a power reduction request from the DR server 60, the controller 30 calculates the amount of power that can be reduced in a period during which DR is performed (hereinafter also referred to as a DR period). Send to server 60. Then, the DR server 60 transmits to the controller 30 a DR signal in which power reduction within the range of the reduction possible amount is specified, and the controller 30 consumes the specified amount of power consumption according to the received DR signal. In order to reduce this, control such as stopping of the electric equipment 23 is performed.

In this way, in the power management system 10, the reduction possible amount is transmitted from the controller 30 side to the DR server 60 before the DR period. For this reason, the DR server 60 can estimate the power reduction possible amount in the DR period in advance. Therefore, it is possible to suppress the power amount requested to be reduced in the DR period from being greatly different from the actually reduced power amount. That is, stable DR can be realized.

Hereinafter, each device constituting the power management system 10 will be described in detail. In the present specification, the power reduction request is a prior notification made before the DR period, and the electric device 23 is controlled based on the DR signal in the DR period.

[Higher server and DR server]
The upper server 50 is a server that transmits and receives data to and from the DR server 60. The upper server 50 is managed by a business operator that manages the power system 80 such as an electric power company.

The DR server 60 is a server that transmits and receives data to and from the controller 30. Specifically, the DR server 60 transmits a power reduction request and a DR signal to the controller 30. In addition, the power reduction amount is received from the controller 30. The DR server 60 is managed by an aggregator. The aggregator is, for example, a business operator that performs a power supply and demand adjustment business in response to a request from a business operator that manages the power system 80 such as a power company (a business that substantially owns the upper server 50).

The upper server 50 and the DR server 60 may be a single server. For example, the upper server 50 may have the function of the DR server 60.

[Power measurement device]
The power measuring device 20 is a distribution board having a power measuring function and a wireless communication function. The power measuring device 20 has a main breaker 21 for turning on or off the power supply from the power system 80 through the main line 11. The main breaker 21 is a breaker that stops the supply of electric power from the electric power system 80 when a current exceeding a predetermined electric current (current based on electric power determined by a contract with an electric power company) flows from the electric power system 80.

Also, the power measuring device 20 has a plurality of branch breakers 22 corresponding to each of the plurality of branch circuits 12 branched from the main line 11. That is, the power measuring device 20 has a branch breaker 22 for each branch circuit 12. The branch breaker 22 is a breaker that stops supplying power to the branch circuit 12 when an overcurrent flows through the branch circuit 12 connected to the branch breaker 22. It is assumed that numbers are assigned in advance to the plurality of branch circuits 12 (the plurality of branch breakers 22).

Moreover, the power measuring device 20 has a measuring unit 25. The measurement unit 25 includes a CT (Current Transformer) provided for each branch circuit 12 and measures power consumption (current) for each branch circuit 12 branched from the trunk line 11 by CT. For example, when one electrical device 23 is connected to the branch circuit 12, the measuring unit 25 can measure the power consumption of the electrical device 23. More specifically, the electrical device 23 is connected to the branch circuit 12 through an outlet.

Specifically, the measuring unit 25 is realized by the CT and a processor, a microcomputer, a dedicated circuit, or the like. Note that the measurement unit 25 may measure the power consumption of the trunk line 11 (main trunk circuit). Note that the measurement unit 25 is not limited to a configuration having a CT, and may include, for example, a Rogowski circuit or a GMR element (Giant Magneto Resistive device).

Although not shown, the power measuring device 20 includes a communication module (communication circuit) for performing wireless communication with the controller 30 and can perform wireless communication with the controller 30. Specifically, the power measuring device 20 transmits the power consumption for each branch circuit 12 to the controller 30 by wireless communication. The wireless communication method (communication standard) is, for example, a specific low power wireless using a frequency of 920 MHz band, but Zigbee (registered trademark), Bluetooth (registered trademark), wireless LAN (Local Area Network), or the like. Other communication standards may be used. In addition, the power measurement device 20 may perform wired communication with the controller 30.

In addition, the specific aspect of the power measuring device 20 is not particularly limited as long as the power consumption for each branch circuit 12 can be measured. For example, the power measurement device 20 may be realized as a device (measurement unit) separate from the distribution board. Specifically, the power measuring device 20 may be an outlet plug type device connected between an outlet and the electrical device 23. In this case, the power measuring device 20 can measure the power consumption for each outlet.

[controller]
Next, the controller 30 will be described with reference to FIG. 2 in addition to FIG. FIG. 2 is a block diagram showing a system configuration of the controller 30.

The controller 30 is an example of a power management device, and is a control device that accumulates and manages the power consumption measured by the measurement unit 25. Specifically, the controller 30 is a HEMS (Home Energy Management System) controller, but may be a BEMS (Building Energy Management System) or a FEMS (Factory Energy Management Controller).

As shown in FIG. 2, the controller 30 specifically includes a first communication unit 31, a control unit 32, a storage unit 37, and a second communication unit 36. The control unit 32 includes a first determination unit 33, a second determination unit 34, and a calculation unit 35.

The first communication unit 31 is a communication module (communication circuit) for the controller 30 to perform wireless communication with the power measurement device 20 and the plurality of electrical devices 23. The first communication unit 31 transmits a control signal to each of the plurality of electrical devices 23 based on the control of the control unit 32. During the DR period, the power consumption of the plurality of electrical devices 23 is reduced by the control signal.

Further, the first communication unit 31 also functions as an acquisition unit. The first communication unit 31 sequentially acquires power consumption in the facility 40 measured by the measurement unit 25. Specifically, the first communication unit 31 acquires the power consumption in the facility 40 for each branch circuit 12 included in the facility 40. Wireless communication is used to acquire power consumption. In addition, the 1st communication part 31 may acquire the power consumption in the facility 40 measured by the measurement part 25 in real time, and may acquire it for every fixed period (for example, every hour).

The storage unit 37 is a storage device that stores (accumulates) the power consumption of the plurality of branch circuits 12 acquired by the first communication unit 31. The power consumption of the plurality of branch circuits 12 is stored in association with time information (including date) when the power consumption is measured. Specifically, the storage unit 37 is realized by a semiconductor memory or the like.

The storage unit 37 also stores the correspondence between the branch circuit 12 (the number of the branch circuit 12) and the electrical device 23 connected to the branch circuit 12. FIG. 3 is a diagram showing a correspondence relationship between the branch circuit 12 (number of the branch circuit 12) stored in the storage unit 37 and the electrical device 23 (name of the branch circuit 12) connected to the branch circuit 12. is there. Such a correspondence relationship is registered (set) by the user when the power management system 10 is introduced, for example.

Note that “target / non-target setting” included in the correspondence relationship in FIG. 3 indicates that the branch circuit 12 calculates the first power when calculating the minimum required power (first power) in the facility 40, which will be described later. This is an item indicating whether or not the branch circuit 12 is a target of (1) (hereinafter also referred to as a target branch circuit). Such target or non-target setting is performed by the user through the information communication terminal 90.

Further, the storage unit 37 stores presence / absence information indicating whether or not a person is absent at the facility 40. The presence / absence information is changed by the user through the information communication terminal 90. The presence / absence information may be scheduled (timer set) through the information communication terminal 90, such as being automatically “absent” during a predetermined period of the day.

Here, the power consumption for each branch circuit 12 stored in the storage unit 37 by the control unit 32 described above is the power consumption when there is a person in the facility 40 or when there is no person in the facility 40. Is stored so that it is possible to determine whether the power consumption is less than the maximum power consumption.

In addition, the storage unit 37 stores a control program executed by the control unit 32.

The control unit 32 is realized by a processor, a microcomputer, or a dedicated circuit, and performs information processing such as storage of power consumption in the storage unit 37 and management of stored power consumption. Moreover, in DR control, the control part 32 transmits a control signal to the some electric equipment 23 using the 1st communication part 31, for example, stops a part of some electric equipment 23, and is consumed in the facility 40 Reduce power.

Further, when the second communication unit 36 receives a power reduction request from the DR server 60, the control unit 32 calculates a reduction possible amount and outputs the calculated reduction possible amount to the DR server 60. Hereinafter, each component which the control part 32 has is demonstrated in detail.

The first determination unit 33 determines the first power that is the minimum power consumption required for the facility 40 based on the power consumption acquired by the first communication unit 31. In other words, the first power is the power consumption estimated to be the minimum necessary by the user or the controller 30. The first determination unit 33 performs, for example, a user's intentional operation such as standby power that the TV constantly consumes to receive infrared rays from the remote control and power that the refrigerator constantly consumes. Irrelevant power consumption is determined as the first power. Moreover, the 1st determination part 33 may determine 1st electric power based on a user's instruction | indication or designation | designated, and the 1st electric power in this case is power consumption judged as the minimum required by the user.

The second determination unit 34 determines second power that is normal power consumption in the facility 40 based on the power consumption acquired by the first communication unit 31. For example, the second determination unit 34 determines so-called baseline power as the second power. Baseline power is normal power consumption that is assumed when the facility 40 does not reduce power consumption based on DR. The second power includes the power consumption of the electric device 23 according to the user's intentional operation.

In the first embodiment, the first determination unit 33 determines the first power based on the power consumption acquired by the first communication unit 31 when no person is present in the facility 40. On the other hand, the second determination unit 34 determines the second power based on the power consumption acquired by the first communication unit 31 when a person is present in the facility 40. That is, the control unit 32 determines whether or not the power consumption stored in the storage unit 37 is the power consumption when there is a person, and uses the power consumption to determine the first power based on the determination result. Or whether to use it for the determination of the second power. FIG. 4 is a diagram for explaining an example of a method for determining the first power and the second power.

For example, as shown in FIG. 4 (b), the presence / absence information may indicate that no person is present in the facility 40 in the period from 7:00 to 18:00 on February 10, 2015. . In this case, the first determination unit 33 is an average value (average power consumption) of the power consumption (here, the total power consumption of each branch circuit 12; the same applies hereinafter) stored in the storage unit 37. 430 W is determined as the first power.

In addition, as shown in FIG. 4A, the presence / absence information indicates that there is a person in the facility 40 during the period after 18:00 on February 9, 2015 and before 7:00 (next day). There is a case. In this case, the second determination unit 34 determines 1500 W, which is the average value (average power consumption) of the power consumption in the period, stored in the storage unit 37, as the second power.

Similarly, as shown in (c) of FIG. 4, the presence / absence information indicates that there is a person in the facility 40 during the period after 18:00 on February 10, 2015 and before 7:00 (next day). May show. In this case, the second determination unit 34 determines 1650 W, which is the average value (average power consumption) of the power consumption in the period, stored in the storage unit 37, as the second power.

Note that the method of determining the first power and the second power shown in FIG. 4 is an example. In FIG. 4, the average value of the power consumption in the target period is used as the first power and the second power. For example, the most frequent power consumption in the target period is based on the histogram. It may be used as dual power.

The determination of the first power and the determination of the second power are performed when the second communication unit 36 receives a power reduction request from the DR server 60, for example, but before the power reduction request is received. May be.

For example, the determination of the first power and the second power may be calculated based on power consumption data for the latest 24 hours at 0:00 every day and stored in the storage unit 37. In this case, when the second communication unit 36 receives the power reduction request from the DR server 60, the control unit 32 selects the first power and the first power from the history of the first power and the second power stored in the storage unit 37. The second power may be selected. In this selection, a condition having a condition close to that of the DR period is selected. The conditions here include conditions such as the season, time zone, day of the week, holiday or weekday.

Also, it is desirable that the second power is determined based on the power consumption in the facility 40 immediately before the DR period. For example, when the power reduction request from the DR server 60 is made immediately before the DR period, the second determination unit 34 uses the second communication unit 36 of the power consumption acquired by the first communication unit 31. The power consumption when the reduction request is received may be determined as the second power. In other words, the power consumption measured at the time closest to the time when the first communication unit 31 receives the power reduction request (for example, the time immediately after the first communication unit 31 receives the power reduction request) as the second power. It is good to decide.

In addition, when the power reduction request from the DR server 60 is made slightly before the DR period (for example, one day before), the second determination unit 34 predicts the power consumption in the DR period, for example, for a predetermined period. The average value of the power consumption acquired by the first communication unit 31 is determined as the second power. At this time, in consideration of the season of the DR period, the time zone, the day of the week, whether the DR period is a holiday or a weekday, a period of conditions as close as possible to the DR period may be used as the predetermined period.

Next, the calculation unit 35 will be described. The calculation unit 35 calculates a reducible amount based on the determined second power and the determined first power. The reducible amount is expressed by, for example, reducible power [W], and the reducible power is obtained by the following equation.

(Reducible power) = (Second power)-(First power)

Thus, when the second power is larger than the first power, the calculation unit 35 sets the difference between the second power and the first power as the reducible power. On the other hand, when the second power is equal to or lower than the first power, there is a high possibility that at least one of the determined second power and the determined first power is abnormal. Therefore, for example, when the second power is equal to or lower than the first power, the calculation unit 35 instructs the first determination unit 33 and the second determination unit 34 to redetermine the second power and review the first power.

The calculation unit 35 may use the reducible power as the reducible amount as it is, or may calculate the reducible power amount [Wh] in a part or all of the DR period based on the reducible power and calculate the reducible amount. The amount of power may be reduced. That is, the calculating unit 35 may calculate the reducible power amount corresponding to the reducible power as the reducible amount.

Note that the reducible power amount may be calculated for each predetermined period included in the DR period. That is, the calculation unit 35 may calculate the reducible power amount according to the reducible power as the reducible amount for each predetermined period.

The second communication unit 36 communicates with the DR server 60 and the information communication terminal 90. For example, the second communication unit 36 receives a power reduction request and a DR signal from the DR server 60. As described above, the power reduction request is transmitted from the DR server 60 before the DR period. The DR signal is a signal designating a reduction amount of power within the range of reduction possible amount, and is transmitted from the DR server 60 during the DR period.

The second communication unit 36 also functions as an output unit, and outputs (transmits) the reducible amount calculated by the calculation unit 35 to the DR server 60 based on the control of the control unit 32. The DR signal may be a signal that specifies the maximum power consumption that should be observed by the user of the facility 40 during the DR period. In this case, the DR server 60 calculates the maximum power consumption based on the reduction possible amount.

The second communication unit 36 receives (accepts) a user instruction or designation from the information communication terminal 90. Specifically, the second communication unit 36 functions as a designation receiving unit, and designates at least some of the branch circuits 12 among the plurality of branch circuits 12 as target branch circuits used for determining the first power. From the information communication terminal 90. In addition, the second communication unit 36 receives an instruction to change presence / absence information from the user through the information communication terminal 90.

Specifically, the second communication unit 36 is a communication module (communication circuit) that performs communication using the Internet and a LAN. In the first embodiment, the second communication unit 36 performs communication using a wireless LAN, but may be a communication module using other wireless communication methods. When the communication method of the first communication unit 31 and the communication method of the second communication unit 36 are the same, the first communication unit 31 and the second communication unit 36 may be realized as one communication module. Good. When the second communication unit 36 performs communication using a wireless LAN, a wireless LAN router (not shown) is interposed between the second communication unit 36 and the information communication terminal 90.

[Information communication terminal]
The information communication terminal 90 is a user interface for transmitting an instruction or designation to the controller 30. The information communication terminal 90 is specifically a personal computer, for example, but may be a mobile terminal such as a smartphone, a tablet terminal, or a remote controller dedicated to the controller 30.

Specifically, the information communication terminal 90 includes a communication module (communication circuit) that performs communication using a wireless LAN, and can communicate with the second communication unit 36. In addition, the information communication terminal 90 includes an input receiving unit that receives user input.

Specifically, when the information communication terminal 90 is a personal computer, the input reception unit is a keyboard and a mouse, but when the information communication terminal 90 is a smartphone or a tablet terminal, a GUI including a touch panel is used. (Graphical User Interface). In the first embodiment, the information communication terminal 90 includes a display unit that displays an image.

The information communication terminal 90 is unnecessary when the user interface is provided in the controller 30 itself.

[Power generation device and power storage device]
The power generation device 70 is a device that generates power and is installed in the facility 40. Specifically, the power generation device 70 is a solar power generation system or a fuel cell system.

The power storage device 75 is a device having a function of charging and discharging power, and is installed in the facility 40. Specifically, the power storage device 75 is a power storage device using a secondary battery (storage battery) such as a lead storage battery, a nickel metal hydride battery, a lithium ion battery, or a redox flow battery. In addition, an electric vehicle (EV) equipped with a lead battery, a nickel metal hydride battery, a lithium ion battery, or the like may be used as the power storage device 75.

Note that the power storage device 75 uses the economic priority mode in which charging / discharging is performed so that the electricity bill in the facility 40 is low based on the electricity bill information, and the consumption (self-consumption) of the power charged in the power storage device 75 in the facility 40. ) And a mode such as an environment priority mode in which power is not sold.

[basic action]
Next, the basic operation of the controller 30 will be described. FIG. 5 is a flowchart of the basic operation of the controller 30.

The first communication unit 31 of the controller 30 acquires power consumption in the facility 40 (S11). Although the 1st communication part 31 should just acquire the power consumption of the whole facility 40 (power consumption in the trunk line 11) at least, in Embodiment 1, the power consumption for every branch circuit 12 is acquired as mentioned above. The acquired power consumption is stored in the storage unit 37 in association with the presence / absence information (the presence / absence of a person) stored in the storage unit 37 when acquired.

When the second communication unit 36 receives the power reduction request from the DR server 60 (S12), the first determination unit 33 is acquired based on the power consumption acquired by the first communication unit 31 and stored in the storage unit 37. The first power, which is the minimum power consumption required for the facility 40, is determined (S13). Specifically, the first determination unit 33 determines, as the first power, an average value of power consumption when no person is present in the facility 40 during a predetermined period (period of a predetermined length). The first power may be determined before the second communication unit 36 receives a power reduction request from the DR server 60.

Subsequently, the second determination unit 34 determines second power that is normal power consumption in the facility 40 based on the power consumption acquired by the first communication unit 31 and stored in the storage unit 37 ( S14). Specifically, the second determination unit 34 determines, as the second power, an average value of power consumption when a person is present in the facility 40 during a predetermined period.

Next, the calculation unit 35 calculates a reducible amount using the reducible power determined by comparing the second power and the first power (S15). Specifically, the calculation unit 35 calculates the reducible power, which is power obtained by subtracting the first power from the second power, as a reducible amount.

Next, the second communication unit 36 outputs (transmits) the calculated reduction possible amount to the DR server 60 based on the control of the control unit 32 (S16).

Thereafter, when the DR period arrives, the second communication unit 36 receives the DR signal from the DR server 60 (S17). In the DR signal, a power reduction amount within the range of the reduction possible amount is designated. Based on the control of the control unit 32, the first communication unit 31 transmits a control signal for causing the plurality of electric devices 23 to reduce the power consumption specified in the DR signal (S18).

As described above, the controller 30 (power management system 10) includes the first communication unit 31, the first determination unit 33, the second determination unit 34, the calculation unit 35, and the second communication unit 36. . The first communication unit 31 is an example of an acquisition unit, and acquires power consumption in the facility 40. The first determination unit 33 determines the first power that is the minimum power consumption required for the facility 40 based on the power consumption acquired by the first communication unit 31. The second determination unit 34 determines second power that is normal power consumption in the facility 40 based on the power consumption acquired by the first communication unit 31. The calculation unit 35 calculates a possible reduction amount of power consumption in the facility 40 based on the difference between the second power and the first power. The second communication unit 36 is an example of an output unit, and outputs the calculated reduction possible amount.

As described above, in the power management system 10, the controller 30 outputs a reduction possible amount based on the power consumption exceeding the power consumption which is the minimum necessary. For this reason, the DR server 60 can estimate in advance the amount of power consumption that can be reduced in the facility 40 by receiving the amount that can be reduced. That is, the amount of power requested to be reduced in the DR period and the amount of power actually reduced in the DR period are suppressed from being greatly different, and stable DR is realized.

Also, the first determination unit 33 may determine the first power based on the power consumption when the person is absent from the facility 40 among the power consumption acquired by the first communication unit 31. The second determination unit 34 may determine the second power based on the power consumption when there is a person in the facility 40 among the power consumption acquired by the first communication unit 31.

Thereby, the controller 30 can determine the first power and the second power based on the presence or absence of a person in the facility 40.

When the second power is larger than the first power, the calculation unit 35 sets the difference between the second power and the first power as a reducible power, and the reducible power or the reducible power corresponding to the reducible power The amount is calculated as a possible reduction amount.

Thus, the controller 30 can calculate the reducible power or the reducible power amount by subtracting the first power from the second power.

[Operation Example 1]
Next, an operation example 1 of the controller 30 will be described. As shown in FIG. 3, the user can designate the branch circuit 12 for which the first power is calculated through the information communication terminal 90 as the target branch circuit. Hereinafter, the operation of the controller 30 including the reception of designation of the branch circuit 12 will be described as an operation example 1. FIG. 6 is a flowchart of the first operation example. In FIG. 6, the description will be focused on parts different from the basic operation of FIG. 5. Steps substantially the same as the basic operation in FIG. 5 are denoted by the same reference numerals as in FIG. 5, and different portions will be described.

In Operation Example 1, the second communication unit 36 of the controller 30 accepts designation of the target branch circuit before the first power is determined in step S13 (S21). In FIG. 6, the second communication unit 36 accepts designation of the target branch circuit before receiving the power reduction request in step S12, but accepts designation of the target branch circuit after receiving the power reduction request in step S12. May be.

The target branch circuit is specified through the information communication terminal 90. When the information communication terminal 90 is a smartphone, the target branch circuit is specified through a display screen as shown in FIG. FIG. 7 is a diagram showing an example of a display screen used for specifying the target branch circuit. Such a display screen is displayed on the display unit of the information communication terminal 90 when a dedicated application installed in advance on the information communication terminal 90 is executed. As the target branch circuit, the branch circuit 12 connected to the electrical device 23 that requires constant power supply, such as a refrigerator, a telephone, a modem, and a septic tank, may be designated.

And in step S13, the 1st determination part 33 determines the average value in the predetermined period of the sum total of the power consumption of an object branch circuit when a person is absent in the facility 40 as 1st electric power. That is, the first determination unit 33 determines the first power by setting the power consumption of the branch circuits 12 other than the target branch circuit to 0. The subsequent operation is the same as the basic operation shown in FIG.

As described above, the facility 40 includes a plurality of branch circuits 12 branched from the main line 11 used for power supply from the power system 80 to the facility 40, and the first communication unit 31 You may acquire for every branch circuit 12 which 40 has. The power management system 10 may further include a second communication unit 36 that receives designation from the user that at least some of the plurality of branch circuits 12 are target branch circuits used for determining the first power. Good. Then, the first determination unit 33 may determine the first power based on the power consumption of the target branch circuit acquired by the first communication unit 31. In this case, the second communication unit 36 is an example of a designation receiving unit.

Thereby, the 1st determination part 33 can determine 1st electric power according to a user's designation | designated. Further, the user examines the branch circuit 12 that is desired to be used in the DR period. For this reason, the structure which receives designation | designated of the branch circuit 12 can also raise a user's power saving consciousness.

[Operation example 2]
Next, an operation example 2 of the controller 30 will be described. The controller 30 may have a power consumption instruction mode in which the power consumption measured by the power measurement device 20 in a state in which the user actually operates the electrical device 23 in the facility 40 is determined as the first power. Hereinafter, the operation of the controller 30 including the operation in the power consumption instruction mode will be described as an operation example 2. FIG. 8 is a flowchart of the second operation example. In FIG. 8, the description is focused on parts that are different from the basic operation of FIG. 5. Steps substantially the same as the basic operation in FIG. 5 are denoted by the same reference numerals as in FIG. 5, and different portions will be described.

In operation example 2, the first communication unit 31 acquires power consumption in the facility 40 (S11). Here, for example, when a mode transition instruction is transmitted from the information communication terminal 90 to the controller 30, the controller 30 transitions to the power consumption instruction mode.

In the power consumption instruction mode, the user turns on only the electric device 23 that he wants to use (does not want to be turned off) during the DR period. At this time, the set temperature of the air conditioner may be set to a temperature planned during the DR period. When the user presses a determination button on the display screen as shown in FIG. 9, an instruction is transmitted from the information communication terminal 90 to the controller 30, and the second communication unit 36 receives this instruction (S31). FIG. 9 is a diagram illustrating an example of a display screen on which a determination button for instructing the first power is displayed.

The first determination unit 33 uses the power consumption in the facility 40 (the power consumption for each branch circuit 12 measured by the power measurement device 20) at the time when the second communication unit 36 receives the instruction (≈the time when the determination button is pressed). Is determined as the first power (S13).

Specifically, the first determination unit 33 specifies the power consumption at the time when the second communication unit 36 receives the instruction (or the time closest to the time) by referring to the storage unit 37. In addition, when the acquisition of the power consumption from the power measurement device 20 is performed in real time (or at a fine timing), the first determination unit 33 uses the consumption acquired immediately after the second communication unit 36 receives the instruction. The power may be determined as the first power.

Further, the time information when the determination button is pressed (time information measured by the information communication terminal 90) may be included in the instruction transmitted from the information communication terminal 90 in response to pressing of the determination button. In this case, the first determination unit 33 refers to the time information included in the instruction received by the second communication unit 36 and the time information of the power consumption stored in the storage unit 37 to obtain the first power. Can be determined.

After step S31, when the second communication unit 36 receives a power reduction request from the DR server 60 (S12), the second determination unit 34 determines the second power (S14). The subsequent operation is the same as the basic operation shown in FIG.

As described above, the controller 30 may include the second communication unit 36 that receives from the user an instruction for determining the current power consumption in the facility 40 as the first power. In this case, the second communication unit 36 is an example of an instruction receiving unit. The first determination unit 33 determines the power consumption of the facility 40 acquired by the first communication unit 31 and the power consumption of the facility 40 when the second communication unit 36 receives an instruction as the first power. Also good.

Thereby, the 1st determination part 33 can determine the power consumption in the facility 40 at the time of receiving a user's instruction | indication as 1st electric power. The user can determine the first power intuitively and easily by transmitting an instruction from the information communication terminal 90 in a state in which the power source of the electric device 23 that is desired to operate normally is turned on even during the DR period. In addition, since the user carefully examines the electrical device 23 that is desired to be operated during the DR period, according to such a power consumption instruction mode, the user's awareness of power saving can be increased.

[Operation Example 3]
Next, an operation example 3 of the controller 30 will be described. In the calculation of the reducible amount, the generated power (power generation amount) of the power generation device 70 provided in the facility 40 may be taken into consideration. Hereinafter, the operation of the controller 30 including the calculation process of the reducible amount in consideration of the generated power of the power generation device 70 will be described as an operation example 3. FIG. 10 is a flowchart of the operation example 3. In FIG. 10, the description will be focused on parts that are different from the basic operation of FIG. 5. Steps substantially the same as the basic operation in FIG. 5 are denoted by the same reference numerals as in FIG. 5, and different portions will be described.

In the operation example 3, before the reduction possible amount is calculated in step S15, the second communication unit 36 of the controller 30 acquires the predicted generated power during the DR period of the power generation device 70 (S41). In the example of FIG. 10, the predicted generated power is acquired after the second power is determined in step S14. In this case, the second communication unit 36 functions as a generated power acquisition unit.

When the power generation device 70 is a solar power generation system, the predicted generated power is based on the amount of solar radiation in the DR period and the power generation efficiency of the power generation device 70 by executing a dedicated application in the information communication terminal 90, for example. Calculated. The amount of solar radiation is provided from, for example, a dedicated server that provides weather information. In this case, the second communication unit 36 acquires the predicted generated power from the information communication terminal 90.

Further, the predicted generated power may be provided from an external device such as a server of the manufacturer of the power generation device 70. In this case, the second communication unit 36 acquires predicted generated power from the external device.

Further, the predicted generated power may be predicted by the control unit 32. For example, if information such as power generation efficiency is stored in the storage unit 37 and information on the amount of solar radiation is provided through a second communication unit 36 from a dedicated server that provides weather information, the control unit 32 may Can be calculated. In this case, the control unit 32 calculates the predicted generated power and also functions as a generated power acquisition unit.

When the power generation device 70 is a fuel cell system, the predicted generated power is determined based on the operation plan of the power generation device 70 in the DR period. In this case, the predicted generated power is manually input by the user through the information communication terminal 90, for example, and the predicted generated power is acquired by the second communication unit 36.

Further, the controller 30 may acquire an operation plan (predicted generated power in the DR period) directly from a device (for example, the power generation device 70 itself) that holds the operation plan of the power generation device 70. In this case, at least one communication unit of the first communication unit 31 and the second communication unit 36 functions as a generated power acquisition unit, and an apparatus holding an operation plan of the power generation device 70 is connected to the at least one communication unit. Send the operation plan.

After step S41, the calculation unit 35 determines a reducible power based on the second power, the first power, and the predicted generated power, and calculates a reducible amount according to the determined reducible power (S15). . Specifically, when the sum of the second power and the predicted generated power is larger than the first power, the calculating unit 35 sets the difference between the second power and the predicted generated power and the first power as the reducible power. . That is, the reducible power in consideration of the predicted generated power is obtained by the following formula.

(Reducible power) = (Second power)-(First power) + (Predicted power generation)

On the other hand, when the reducible power is 0 or less, the calculation unit 35 determines, for example, at least one of the second power review and the first power review as the first determination unit 33 or the second determination. The unit 34 is commanded.

In subsequent step S16, based on the reducible power, a reducible amount expressed as power or power amount is output. The subsequent operation is the same as the basic operation shown in FIG.

As described above, the facility 40 may further include the power generation device 70, and the power management system 10 may further include the second communication unit 36 that acquires the predicted generated power of the power generation device 70. In this case, the second communication unit 36 is an example of a generated power acquisition unit. The calculation unit 35 may calculate a reduction possible amount based on the first power, the second power, and the predicted generated power.

Thereby, the controller 30 can calculate the reduction possible amount in consideration of the predicted generated power of the power generator 70.

Further, when the sum of the second power and the predicted generated power is larger than the first power, the calculation unit 35 sets the difference between the sum of the second power and the predicted generated power and the first power as the reducible power, and the reducible power Alternatively, the reducible power amount corresponding to the reducible power may be calculated as the reducible amount.

Thereby, the controller 30 can calculate the reducible power or the reducible power amount in consideration of the predicted generated power of the power generator 70.

[Operation Example 4]
Next, an operation example 4 different from the basic operation of the controller 30 will be described. In the calculation of the reducible amount, charging power (power charged to the power storage device 75) and discharging power (power discharged from the power storage device 75) of the power storage device 75 provided in the facility 40 may be considered. Hereinafter, the operation of the controller 30 including the calculation process of the reducible amount in consideration of the charging power and the discharging power of the power storage device 75 will be described as an operation example 4. FIG. 11 is a flowchart of the operation example 4. In FIG. 11, the description is focused on parts that are different from the basic operation of FIG. 5. Steps substantially the same as the basic operation in FIG. 5 are denoted by the same reference numerals as in FIG. 5, and different portions will be described.

In the operation example 4, the second communication unit 36 of the controller 30 acquires plan information for the DR period of the power storage device 75 before the reduction possible amount is calculated in step S15 (S51). In the example of FIG. 11, plan information is acquired after the second power is determined in step S14. In this case, the second communication unit 36 functions as a plan acquisition unit.

The plan information is information indicating a schedule for charging and discharging the power storage device 75. The plan information includes information on the power charged in the power storage device 75 in the DR period and information on the power discharged from the power storage device 75 in the DR period. The controller 30 acquires the plan information from the device that holds the plan information of the power storage device 75. The device holding the plan information of the power storage device 75 is, for example, the power storage device 75, a control device for the power storage device 75, a management device for the power storage device 75, or the like. In this case, at least one communication unit of the first communication unit 31 and the second communication unit 36 functions as a plan acquisition unit, and the device that holds the plan information of the power storage device 75 plans the at least one communication unit. Send information.

After step S51, the calculation unit 35 determines the reducible power based on the second power, the first power, and the plan information, and calculates a reducible amount according to the determined reducible power (S15).

Specifically, the calculating unit 35 is a third power that is the sum of the second power and the power discharged from the power storage device 75. The third power is a sum of the first power and the power charged in the power storage device 75. When larger than the four electric powers, the difference between the third electric power and the fourth electric power is set as the reducible power. That is, the reducible power in consideration of the plan information is obtained by the following formula.

(Reducible power) = (Second power)-(First power) + (Discharge power)-(Charge power)

On the other hand, when the third power is equal to or lower than the fourth power and the reducible power is equal to or lower than 0, the control unit 32 performs at least one of the second power review and the first power review. Commands the first determination unit 33 or the second determination unit 34. Further, the control unit 32 may instruct the device that holds the plan information to review the plan information.

In subsequent step S16, based on the reducible power, a reducible amount expressed as power or power amount is output. The subsequent operation is the same as the basic operation shown in FIG.

As described above, the facility 40 further includes the power storage device 75, and the power management system 10 further includes the second communication unit 36 that acquires predetermined charge / discharge plan information of the power storage device 75. Also good. In this case, the second communication unit 36 is an example of a plan acquisition unit. The calculation unit 35 may calculate the reduction possible amount based on the difference between the first power and the second power and the plan information.

Thereby, the controller 30 can calculate the reduction possible amount in consideration of the plan information of the power storage device 75.

The third power, which is the sum of the second power and the power discharged from the power storage device determined in the plan information, is the sum of the first power and the power charged in the power storage device 75 determined in the plan information. It may be greater than the fourth power. In such a case, the calculation unit 35 calculates the difference between the third power and the fourth power as reducible power, and calculates the reducible power or the reducible power amount according to the reducible power as the reducible amount. Also good.

Thereby, the controller 30 can calculate the reducible power or the reducible power amount in consideration of the plan information of the power storage device 75.

(Embodiment 2)
In the first embodiment, the calculation of the reducible amount is performed by the controller 30, but the calculation of the reducible amount may be performed by the DR server 60. That is, instead of the controller 30, the DR server 60 may include a component for calculating the reduction possible amount. FIG. 12 is a block diagram showing the configuration of the power management system according to the second embodiment.

It should be noted that in the following second embodiment, description will be made with a focus on differences from the first embodiment, and the same description as in the first embodiment will be omitted. In the second embodiment, the controller 30 is described as not including a component for calculating a reduction possible amount.

The power management system 110 according to the second embodiment includes a controller 30, a host server 50, and a DR server 160 provided in each of the plurality of facilities 40.

The DR server 160 is an example of a power management apparatus, and includes a server communication unit 131, a server control unit 132, and a server storage unit 137. The server control unit 132 includes a first determination unit 133, a second determination unit 134, a calculation unit 135, an output unit 136, and a DR planning unit 138.

The server communication unit 131 communicates with the host server 50 and the controller 30. For example, the server communication unit 131 transmits a DR signal to the controller 30 based on the control of the server control unit 132. In addition, the server communication unit 131 functions as an acquisition unit, and acquires power consumption from the controller 30 provided in each of the plurality of facilities 40. Note that the server communication unit 131 may acquire power consumption in the facility 40 from the power measurement device 20 (not shown in FIG. 12) provided in each of the plurality of facilities 40 without using the controller 30.

Further, the server communication unit 131 can also acquire presence / absence information or branch circuit designation from the controller 30 (or the information communication terminal 90 not shown in FIG. 12).

Specifically, the server communication unit 131 is a communication module (communication circuit) that performs communication using the Internet. However, if the server communication unit 131 can communicate with the host server 50 and the controller 30 (power measurement device 20), the server communication unit 131 The communication module using the communication method may be used.

The server storage unit 137 stores the power consumption for each facility 40 acquired by the server communication unit 131. Specifically, the server storage unit 137 is realized by an HDD (Hard Disc Drive) or the like.

The server control unit 132 is realized by a processor, a microcomputer, or a dedicated circuit, and performs information processing such as storage of power consumption acquired by the server communication unit 131 in the server storage unit 137 and management of stored power consumption. . In the DR control, the server control unit 132 transmits a DR signal to the plurality of controllers 30 using the server communication unit 131.

In addition, the server control unit 132 calculates a reducible amount and outputs the calculated reducible amount to the DR planning unit 138 through the output unit 136. Hereinafter, each component which the server control part 132 has is demonstrated in detail.

The first determination unit 133 determines the first power based on the power consumption acquired by the server communication unit 131. The operation of the first determination unit 133 is the same as that of the first determination unit 33. The determination of the second power is performed for each of the plurality of facilities 40.

The second determination unit 134 determines the second power based on the power consumption acquired by the server communication unit 131. The operation of the second determination unit 134 is the same as that of the second determination unit 34. The determination of the second power is performed for each of the plurality of facilities 40.

The calculating unit 135 calculates a possible reduction amount based on the determined second power and the determined first power. The operation of the calculation unit 135 is the same as that of the calculation unit 35. The calculation of the reducible amount is performed for each of the plurality of facilities 40.

The output unit 136 outputs the calculated reduction possible amount to the DR planning unit 138.

DR planning unit 138 acquires the output possible reduction amount, and generates a DR signal in which power reduction within the range of the possible reduction amount is designated based on the acquired reduction possible amount. In addition, the DR planning unit 138 transmits the DR signal generated in the DR period to the controller 30. The generation and transmission of the DR signal is performed for each of the plurality of facilities 40.

Note that the DR signal may be a signal that specifies the maximum power consumption that should be observed by the user of the facility 40 during the DR period. In this case, the DR server 160 calculates the maximum power consumption in each of the plurality of facilities 40 based on the reduction possible amount.

As described above, the server communication unit 131 may acquire the power consumption in each of the plurality of facilities 40, and the first determination unit 133 may determine the first power for each of the plurality of facilities 40. The server communication unit 131 is an example of an acquisition unit.

Thereby, the DR server 160 can calculate the first power in each of the plurality of facilities 40.

When the server communication unit 131 cannot acquire the power consumption of some of the facilities 40 among the plurality of facilities 40 due to a communication failure or the like, the server control unit 132 can reduce the number of the facilities 40. The amount cannot be calculated. In such a case, the server control unit 132 may calculate the possible reduction amount of the other facility 40 based on the power consumption in the one facility 40.

For example, if user information of each facility 40 (information on the size of the facility 40, the family structure, and the electrical equipment 23 installed in the facility 40) is stored in the server storage unit 137, the server control unit 132 can specify the facility 40 similar to the other facility 40 by referring to such user information. Then, the server control unit 132 calculates a reducible amount based on the power consumption in the specified facility 40, and substitutes the calculated reducible amount as a reducible amount of the facility 40 for which power consumption could not be acquired. Can do.

(Other embodiments)
Although the power management system according to the embodiment has been described above, the present invention is not limited to the above embodiment.

For example, in the above embodiment, presence / absence information indicating the presence / absence of a person in the facility 40 is manually changed by the user. However, the controller 30 may automatically determine the presence or absence of a person in the facility 40.

For example, the controller 30 determines that there is a person in the facility 40 when the smartphone is present in the facility 40, and determines that there is no person in the facility 40 when the smartphone is not present in the facility 40. be able to. The controller 30 may change the presence / absence information based on such determination.

Note that whether or not a smartphone is present in the facility 40 can be determined by wireless communication. Specifically, it is possible to determine whether a smartphone exists in the facility 40 by using a search protocol such as ARP (Address Resolution Protocol) or UPnP (Universal Plug and Play). Further, a standard protocol such as ECHONET-Lite may be used for determining whether or not a smartphone is present in the facility 40. Whether or not a smartphone exists in the facility 40 can also be determined based on position information of a GPS module that the smartphone has.

In the above embodiment, the first power is determined based on the power consumption when no person is present in the facility, and the second power is determined based on the power consumption when the person is present in the facility. . However, it is also possible to determine the first power from the power consumption when a person is present in the facility. Specifically, the minimum value of the comparison value is obtained within a range that satisfies the condition that the time during which the power consumption when the person is present in the facility continuously falls below the comparison value exceeds the predetermined maintenance time. Can be estimated as the first power. Such a method may be used to determine the first power.

Further, the communication method between apparatuses described in the above embodiment is not particularly limited. For example, wired communication may be performed between devices instead of wireless communication. Specifically, the wired communication is power line carrier communication (PLC: Power Line Communication) or communication using a wired LAN.

In addition, the distribution of the components to the devices in the above embodiment is an example. For example, the function of the controller may be realized by a plurality of devices, and the controller and the power measurement device may be realized as one device. For example, the controller may include a first determination unit and a second determination unit, and the DR server may include a calculation unit.

In the above embodiment, each component may be configured by dedicated hardware or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

Each component may be a circuit (or an integrated circuit). These circuits may constitute one circuit as a whole, or may be separate circuits. Each of these circuits may be a general-purpose circuit or a dedicated circuit.

The general or specific aspect of the present invention may be realized by a recording medium such as a system, apparatus, method, integrated circuit, computer program, or computer-readable CD-ROM. Further, the present invention may be realized by any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium. For example, the present invention may be realized as a power management apparatus (the controller of the first embodiment or the DR server of the second embodiment). In addition, the present invention may be realized as a power management method executed by the power management system, or may be realized as a program for causing a computer to execute such a power management method.

In addition, the order of the plurality of processes in the operation of the power management system described in the above embodiment is an example. The order of the plurality of processes may be changed, and the plurality of processes may be executed in parallel.

Further, for example, in the above-described embodiment, another processing unit may execute a process executed by a specific processing unit.

In addition, it is realized by variously conceiving various modifications conceived by those skilled in the art for each embodiment, or by arbitrarily combining the components and functions in each embodiment without departing from the spirit of the present invention. This form is also included in the present invention.

10, 110 Power management system 11 Trunk line 12 Branch circuit 30 Controller (power management device)
31 First communication unit (acquisition unit)
33, 133 First determination unit 34, 134 Second determination unit 35, 135 Calculation unit 36 Second communication unit (output unit, designation reception unit, instruction reception unit, generated power acquisition unit, plan acquisition unit)
40 facilities 70 power generation devices 75 power storage devices 131 server communication unit (acquisition unit)
136 Output unit 160 DR server (power management device)

Claims (13)

1. An acquisition unit for acquiring power consumption in the facility;
   Based on the power consumption acquired by the acquisition unit, a first determination unit that determines a first power that is the minimum power consumption required for the facility;
   A second determination unit that determines second power that is normal power consumption in the facility based on the power consumption acquired by the acquisition unit;
   Based on the difference between the second power and the first power, a calculation unit that calculates a reducible amount of power consumption in the facility;
   And an output unit that outputs the calculated reduction possible amount.
2. The first determination unit determines the first power based on the power consumption when the person is absent from the facility among the power consumption acquired by the acquisition unit,
   The power management system according to claim 1, wherein the second determination unit determines the second power based on power consumption when a person exists in the facility among the power consumption acquired by the acquisition unit.
3. The facility includes a plurality of branch circuits branched from a main line used for power supply to the facility,
   The acquisition unit acquires the power consumption in the facility for each branch circuit of the facility,
   The power management system further includes a designation receiving unit that receives designation from a user as a target branch circuit to be used for determining the first power at least some of the plurality of branch circuits.
   The power management system according to claim 1 or 2, wherein the first determination unit determines the first power based on power consumption of the target branch circuit acquired by the acquisition unit.
4. An instruction receiving unit that receives an instruction for determining the current power consumption in the facility as the first power from a user;
   The first determination unit determines the power consumption of the facility acquired by the acquisition unit as the first power when the instruction reception unit receives an instruction. The power management system described in 1.
5. The acquisition unit acquires power consumption in each of a plurality of facilities including the facility,
   The power management system according to any one of claims 1 to 4, wherein the first determination unit determines the first power for each of the plurality of facilities.
6. When the second power is larger than the first power, the calculation unit sets the difference between the second power and the first power as a reducible power, and depends on the reducible power or the reducible power. The power management system according to any one of claims 1 to 5, wherein the power that can be reduced is calculated as the amount that can be reduced.
7. The facility further includes a power generation device,
   The power management system further includes a generated power acquisition unit that acquires the predicted generated power of the power generation device,
   The power management according to any one of claims 1 to 5, wherein the calculation unit calculates the reduction possible amount based on a difference between the first power and the second power and the predicted generated power. system.
8. When the sum of the second power and the predicted generated power is larger than the first power, the calculation unit sets the difference between the second power and the predicted generated power and the first power as a reducible power. The power management system according to claim 7, wherein the reducible power or a reducible power amount corresponding to the reducible power is calculated as the reducible amount.
9. The facility further includes a power storage device,
   The power management system further includes a plan acquisition unit that acquires predetermined charge / discharge plan information of the power storage device,
   The power management system according to any one of claims 1 to 5, wherein the calculation unit calculates the reduction possible amount based on a difference between the first power and the second power and the plan information.
10. The third power, which is the sum of the second power and the power discharged from the power storage device determined in the plan information, is the first power and the power charged in the power storage device determined in the plan information. When the sum is larger than the fourth power, the calculation unit sets the difference between the third power and the fourth power as a reducible power, and can be reduced according to the reducible power or the reducible power. The power management system according to claim 9, wherein a power amount is calculated as the reduction possible amount.
11. An acquisition unit for acquiring power consumption in the facility;
    Based on the power consumption acquired by the acquisition unit, a first determination unit that determines a first power that is the minimum power consumption required for the facility;
    A second determination unit that determines second power that is normal power consumption in the facility based on the power consumption acquired by the acquisition unit;
    Based on the difference between the second power and the first power, a calculation unit that calculates a reducible amount of power consumption in the facility;
    An output unit that outputs the calculated reduction possible amount.
12. Get power consumption at the facility,
    Based on the acquired power consumption, determine the first power that is the minimum power consumption required for the facility,
    Based on the acquired power consumption, determine the second power that is normal power consumption in the facility,
    Based on the difference between the second power and the first power, the amount of power consumption that can be reduced in the facility is calculated,
    A power management method for outputting the calculated reduction possible amount.
13. A program for causing a computer to execute the power management method according to claim 12.

Images