Device control apparatus, power management system, device control method, and program

Abstract

To achieve appropriate power saving without imposing a large burden on a user as much as possible.SOLUTION: When a power reduction request is received that requests reducing the total power consumption so that the total power consumption in a power-saving target area during a power-saving target period does not exceed a target power amount, a power amount estimation unit 114 estimates the total power consumption when operation settings during the power-saving target period of power-saving target devices that are devices of power-saving targets among devices 300 used in the power-saving target area are changed to reduce power consumption. If the changed estimated power amount, which is the total power consumption estimated by the power amount estimation unit 114, does not exceed the target power amount, a device control unit 115 changes the operation settings of the power-saving target devices during the power-saving target period to reduce power consumption, and if the changed estimated power amount exceeds the target power amount, stops operation of the power-saving target devices during the power-saving target period.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an appliance control device, a power management system, an appliance control method, and a program. [Background technology]

[0002] Currently, various techniques for adjusting the balance between supply and demand of electricity are known. For example, when it is predicted that a certain region will experience a shortage of electricity during a certain time period, a technique is known that suppresses electricity consumption in that region during that time period.

[0003] For example, Patent Document 1 describes a technology in which a cloud server transmits a power reduction request to a high-voltage power receiving monitoring device when a demand response is initiated by an aggregator. In the technology described in Patent Document 1, when the high-voltage power receiving monitoring device receives a power reduction request and a reduction target value from the cloud server, it executes stop control or power reduction control on the air conditioning equipment so that the reduction target value can be achieved. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-009864 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the technology described in Patent Document 1, the cloud server cannot appropriately set reduction target values, which may impose a heavy burden on some consumers. For example, a situation may arise in which some consumers do not even need to control the power reduction of some of their air conditioning equipment, while other consumers need to control their air conditioning equipment to stop. In this case, in order to achieve power savings, consumers who need to control their air conditioning equipment to stop must tolerate a significant decrease in comfort. For this reason, there is a demand for technology that achieves appropriate power savings without imposing as much of a burden as possible on users.

[0006] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide an appliance control device, a power management system, an appliance control method, and a program that achieve appropriate power saving without imposing too great a burden on the user. [Means for solving the problem]

[0007] In order to achieve the above object, the device control device according to the present disclosure includes: an electric power amount estimation means for estimating, when receiving a power reduction request that requests reducing total electric power consumption so that the total electric power consumption in a power-saving target area during a power-saving target period does not exceed a target electric power amount, the total electric power consumption when operation settings of power-saving target devices that are power-saving target devices among devices used in the power-saving target area during the power-saving target period are changed so as to reduce power consumption; and equipment control means for changing the operation settings of the power-saving target equipment during the power-saving period so as to reduce power consumption if the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, and for stopping operation of the power-saving target equipment during the power-saving period if the changed estimated power amount exceeds the target power amount. [Effects of the Invention]

[0008] In the present disclosure, if the power reduction request can be met by changing the operation settings of the power-saving target device, the power reduction request is met by changing the operation settings of the power-saving target device, and if the power reduction request cannot be met by changing the operation settings of the power-saving target device, the power reduction request is met by stopping the operation of the power-saving target device. Therefore, according to the present disclosure, appropriate power saving can be achieved without imposing too much burden on the user. [Brief explanation of the drawings]

[0009] [Figure 1] Configuration diagram of a power management system according to a first embodiment [Figure 2] Configuration diagram of a device control device according to the first embodiment [Figure 3] Configuration diagram of a terminal device according to the first embodiment [Figure 4] Functional configuration diagram of a device control device according to the first embodiment [Figure 5] FIG. 1 is a diagram showing reduced power amount information according to the first embodiment; [Figure 6] FIG. 1 shows device selection information according to the first embodiment. [Figure 7] FIG. 10 is a diagram showing a priority setting screen displayed on the terminal device according to the first embodiment; [Figure 8] FIG. 1 shows priority information according to the first embodiment. [Figure 9] 1 is a flowchart showing a device control process executed by a device control device according to the first embodiment; [Figure 10] Flowchart showing the power saving preparation process shown in FIG. 9 [Figure 11] Flowchart showing the power saving start process shown in FIG. 9 [Figure 12] Flowchart showing the power saving process shown in FIG. 9 [Figure 13] Flowchart showing the power saving end process shown in FIG. 9 [Figure 14] FIG. 10 is a diagram showing a priority setting screen displayed by a terminal device according to a second embodiment; [Figure 15] FIG. 10 is a diagram showing priority information according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings, in which the same or corresponding parts are designated by the same reference numerals.

[0011] (Embodiment 1) FIG. 1 is a diagram showing the configuration of a power management system 1000 according to a first embodiment. The power management system 1000 is a system that controls devices 300 used in a management area and manages the amount of power consumed in the management area. The power management system 1000 has a function of improving the balance of energy supply and demand in the management area. For example, when the total amount of power consumed in the management area approaches the upper limit of the amount of power that can be supplied to the management area, the power management system 1000 reduces the total amount of power consumed in the management area.

[0012] The power management system 1000 includes an appliance control device 100 and an aggregator server 200. The appliance control device 100 and the aggregator server 200 are connected to each other via a communication network 510. The appliance control device 100 and the appliances 300 used in each home within the management area are connected to each other via the communication network 510 and a communication network 530. The aggregator server 200 and the smart meters 320 installed in each home within the management area are connected to each other via the communication network 520.

[0013] The communication network 510 is, for example, the Internet. The communication network 520 is a communication network for transmitting power amount information. The communication network 520 may be provided with a dedicated communication line for transmitting the power amount information, or may be provided with a power line for power line communication. The power amount information is information indicating the amount of power consumed per unit time of each residence. The unit time is, for example, 30 minutes. The communication network 530 is a LAN (Local Area Network) provided in each residence. The communication network 530 is a communication network constructed in accordance with a wireless communication standard typified by Wi-Fi (registered trademark), a wired communication standard typified by Ethernet (registered trademark), or the like.

[0014] The device control device 100 is a device that remotely controls the devices 300 used in each home within a management area. In this embodiment, there are n homes within the management area, and the resident of each home has one power contract with the power company, so that there is a one-to-one correspondence between the home and the consumer. In accordance with a power reduction request from the aggregator server 200, the device control device 100 controls these devices 300 so as to reduce the amount of power consumed by these devices 300.

[0015] The device control device 100 can acquire power information indicating the amount of power consumed by each consumer from the smart meter 320 via route B. Route B is a route that passes through a communication network 530 established within the home, and does not pass through the communication network 520. In this embodiment, the device control device 100 is a cloud server managed by a business operator that controls these devices 300 in an integrated manner. As shown in FIG. 2 , the device control device 100 includes a control unit 11, a storage unit 12, and a communication unit 15.

[0016] The control unit 11 includes a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), RTC (Real Time Clock), etc. The CPU is also called a central processing unit, central arithmetic unit, processor, microprocessor, microcomputer, DSP (Digital Signal Processor), etc., and functions as a central processing unit that executes processing and calculations related to the control of the device control device 100. In the control unit 11, the CPU reads programs and data stored in the ROM and uses the RAM as a work area to perform overall control of the device control device 100. The RTC is, for example, an integrated circuit with a timekeeping function. The CPU can determine the current date and time from the time information read from the RTC.

[0017] The storage unit 12 includes a hard disk drive (HDD), a solid state drive (SSD), etc., and serves as a so-called auxiliary storage device. The storage unit 12 stores programs and data used by the control unit 11 to execute various processes. The storage unit 12 also stores data generated or acquired by the control unit 11 as a result of executing various processes.

[0018] The communication unit 15 communicates with devices connected to the communication network 510 under the control of the control unit 11. The communication unit 15 has a function of connecting to the communication network 510 and communicates with devices connected to the communication network 510. The communication unit 15 is provided with a communication interface that complies with various communication standards.

[0019] The aggregator server 200 is a cloud server managed by an aggregator. An aggregator is a business that aggregates the power demands of consumers to provide an efficient energy management service. The aggregator server 200 transmits a power reduction request to the device control device 100, for example, based on a comparison result between the total power consumption in a management area and the amount of power that can be supplied to the management area. The power reduction request is a request to reduce the total power consumption in the power saving target area during a power saving target period so that this total power consumption does not exceed a target power amount. The power reduction request corresponds, for example, to a DR command (Demand Response) in a demand response, which is a mechanism for adjusting the balance between power supply and demand. In this embodiment, the power management system 1000 manages one area, and this one management area corresponds to the power saving target area.

[0020] The aggregator server 200 includes a control unit (not shown) that controls the overall operation of the aggregator server 200, a storage unit (not shown) that stores various types of information, a communication unit (not shown) for connecting to the communication network 510, and a communication unit (not shown) for connecting to the communication network 520. The aggregator server 200 transmits a power reduction request to the device control device 100 via the communication network 510. The aggregator server 200 collects, via the communication network 520, power amount information indicating the amount of power consumed by each residence from a smart meter 320 installed in each residence.

[0021] The aggregator server 200 can estimate the baseline of each consumer based on the power amount information acquired from the smart meter 320 via Route A. Route A is a route that passes through the communication network 520 and does not pass through the communication network 530 established within the home. The baseline is the amount of power consumption that would be expected if the consumer did not save power, and is, for example, a reference value for calculating the amount of power reduction of the consumer through negawatt trading.

[0022] The aggregator server 200 can estimate the total power consumption in the managed area by calculating the sum of the baselines estimated for each consumer. For each time period, the aggregator server 200 compares the amount of power that can be supplied to the managed area notified by the power company with the estimated total power consumption in the managed area. The aggregator server 200 identifies, as a time period requiring power saving, a time period in which the total power consumption is greater than the amount of power that can be supplied, or a time period in which the difference between the amount of power that can be supplied and the total power consumption is equal to or less than a reference value. If a time period requiring power saving exists, the aggregator server 200 transmits a power reduction request to the device control device 100 specifying this time period as a power saving target period.

[0023] The device 300 is a device that consumes power to operate and is installed in each home. The device 300 is a device that can be remotely controlled and monitored. The device 300 communicates with the device control device 100 via a relay device 310. The device 300 has a communication interface for connecting to the communication network 530. In this embodiment, an air conditioning device is installed in each home as the device 300.

[0024] The relay device 310 relays communication between the device control device 100 and the device 300, and relays communication between the device control device 100 and the smart meter 320. The relay device 310 has a function of connecting the device 300 and the smart meter 320 to the communication network 510. The relay device 310 includes a communication interface for connecting to the communication network 510 and a communication interface for connecting to the communication network 530. The relay device 310 is, for example, a broadband router.

[0025] The smart meter 320 is a watt-hour meter that digitally measures the amount of power consumed by each home and has a communication function. The smart meter 320 transmits power amount information indicating the amount of power measured per unit time to the device control device 100 and the aggregator server 200. The smart meter 320 transmits the power amount information to the device control device 100 via route B through the communication network 530. The smart meter 320 transmits the power amount information to the aggregator server 200 via route A through the communication network 520. The smart meter 320 includes a communication interface for connecting to the communication network 520 and a communication interface for connecting to the communication network 530.

[0026] The terminal device 400 is a terminal device carried by a user who uses the device 300 used in a home. The user who uses the device 300 used in a home is basically a resident of the home. The terminal device 400 is a smartphone, a tablet terminal, a laptop computer, etc. As shown in FIG. 3 , the terminal device 400 includes a control unit 41, a storage unit 42, a display unit 43, an operation reception unit 44, and a communication unit 45.

[0027] The control unit 41 includes a CPU, ROM, RAM, RTC, etc. In the control unit 41, the CPU reads out programs and data stored in the ROM and uses the RAM as a work area to perform overall control of the terminal device 400. The storage unit 42 includes non-volatile semiconductor memory such as flash memory, EPROM, and EEPROM, and serves as a so-called auxiliary storage device. The storage unit 42 stores programs and data used by the control unit 41 to execute various processes. The storage unit 42 also stores data generated or acquired by the control unit 41 as a result of executing various processes.

[0028] The display unit 43 displays various images under the control of the control unit 41. For example, the display unit 43 displays a screen for accepting various operations from the user. The display unit 43 includes a touch screen, a liquid crystal display, an LED (Light Emitting Diode), etc. The operation accepting unit 44 accepts various operations from the user and supplies information indicating the contents of the accepted operations to the control unit 41. The operation accepting unit 44 includes a touch screen, a button, a lever, etc.

[0029] The communication unit 45 communicates with the device control device 100 connected to the communication network 510 under the control of the control unit 41. The communication unit 45 may be connected to the communication network 510 via a relay device 310, or may be connected to the communication network 510 via a mobile phone network. The communication unit 45 includes a communication interface for connecting to the communication network 530, a mobile phone network, etc.

[0030] Next, the functions of the device control device 100 will be described with reference to Fig. 4. Functionally, the device control device 100 includes an energy information collection unit 111, an operation information acquisition unit 112, a reduction request acquisition unit 113, an energy estimation unit 114, a device control unit 115, a device selection unit 116, a priority acquisition unit 117, a first detection unit 118, a second detection unit 119, and a notification unit 120. Each of these functions is realized by software, firmware, or a combination of software and firmware. The software and firmware are written as programs and stored in the ROM, storage unit 12, etc. The CPU then executes the programs stored in the ROM, storage unit 12, etc. to realize each of these functions.

[0031] The power amount information collecting unit 111 collects power amount information indicating the amount of power consumed by each consumer for each time period from the smart meter 320 of each consumer in the power saving target area via the communication network 530 within each consumer's home. The power amount information collecting unit 111 stores the collected power amount information in the memory unit 12. The power amount information collecting unit 111 is an example of a power amount information collecting means. The communication network 530 is an example of an in-home communication network.

[0032] The operation information acquisition unit 112 acquires operation information from the devices 300 used by each consumer within the management area. The operation information is information related to the operation of the device 300. For example, if the device 300 is an air conditioner, the operation information includes information indicating the operation mode, set temperature, wind direction, room temperature, outside temperature, etc. The operation mode is a type such as cooling operation, heating operation, fan operation, dehumidification operation, etc. The operation information may also include information indicating detection results of various sensors provided in the device 300. For example, if the device 300 is provided with an infrared sensor and a human presence sensor, the operation information may include information indicating an infrared image generated by the infrared sensor, information indicating a human detection result based on the infrared image generated by the infrared sensor, information indicating a human detection result detected by the human presence sensor, etc.

[0033] The reduction request acquisition unit 113 acquires from the aggregator server 200 a power reduction request, which is a request to reduce the total power consumption amount so that the total power consumption amount in a power-saving target area during a power-saving target period does not exceed the target power amount. The power reduction request includes information indicating the power-saving target period, information indicating the target power amount, etc. For example, the power reduction request includes information indicating that the start time of the power-saving target period is 14:00 on Wednesday, August 23, 2023, information indicating that the start time of the power-saving target period is 17:00 on Wednesday, August 23, 2023, and information indicating that the target power amount is 50,000 kWh per hour. Note that the aggregator server 200 functionally includes a request transmission unit 211 that transmits the power reduction request to the device control device 100. The request transmission unit 211 is an example of a request transmission means.

[0034] The power amount estimation unit 114 estimates the total power consumption in the power saving target area during the power saving target period based on the power amount information collected by the power amount information collection unit 111. For example, the power amount estimation unit 114 estimates an unaltered estimated power amount, a changed estimated power amount, an off-peak estimated power amount, etc. The unaltered estimated power amount is an estimate of the total power consumption when power saving is not implemented during the power saving target period. For example, the power amount estimation unit 114 can estimate the unaltered estimated power amount based on the actual total power consumption during the target period. The target period is a period corresponding to the power saving target period and is a period of the same length as the power saving target period.

[0035] The corresponding period may be the period immediately before the power saving period, or the period before the power saving period on the same day of the week and in the same time period as the power saving period. The power amount estimation unit 114 may regard the actual total power consumption amount for the corresponding period as the estimated power amount when unchanged, or may regard the actual total power consumption amount for the corresponding period corrected taking into account the weather, outside temperature, etc. as the estimated power amount when unchanged. The estimated power amount when unchanged corresponds to the total value of the baselines of each device 300.

[0036] The estimated power amount after change is an estimate of the total power consumption when power saving is performed by changing the operation settings of the power-saving target equipment during the power-saving target period. The power-saving target equipment is the equipment that is subject to power saving among the equipment 300 used in the power-saving target area. In this embodiment, the power-saving target equipment is an air conditioning device that is in operation. The change in operation settings is a change in the operation settings only, without stopping the operation. In this embodiment, the change in operation settings is a change in the set temperature. The estimated power amount after change is calculated, for example, by subtracting the total amount of power reduction secured by changing the operation settings of the power-saving target equipment during the power-saving target period from the estimated power amount without change.

[0037] The estimated power consumption during shutdown is an estimate of the total power consumption when power saving is performed during the power saving period, accompanied by the shutdown of the power saving target devices. The estimated power consumption during shutdown is calculated, for example, by subtracting the total amount of power reduction secured by the shutdown of the power saving target devices during the power saving period from the estimated power consumption during the unaltered period. Below, a specific method is described in which the power consumption estimation unit 114 calculates the estimated power consumption during the unaltered period, the estimated power consumption after modification, the estimated power consumption during shutdown, and the like, one hour before the power saving period.

[0038] First, let Pt be the target amount of power consumed per hour, Pn be the total amount of power consumed in the most recent hour in the area targeted for power saving, Nc be the number of air conditioners in cooling operation, Pcr1 be the amount of power saved per hour when the set temperature for cooling operation is increased by 1°C, Pcr2 be the amount of power saved per hour when cooling operation is stopped, Nh be the number of air conditioners in heating operation, Phr1 be the amount of power saved per hour when the set temperature for heating operation is decreased by 1°C, and Phr2 be the amount of power saved per hour when heating operation is stopped. Note that, basically, Nh is 0 during the cooling season and Nc is 0 during the heating season.

[0039] For example, the power amount estimation unit 114 can assume that the total power consumption in the power saving target area will not change for a while, and can regard Pn as the estimated power amount per hour when not changed. Furthermore, the power amount estimation unit 114 can regard the calculation result of the formula Pn-(Pcr1×Nc+Phr1×Nh) as the estimated power amount per hour when changed. Furthermore, the power amount estimation unit 114 can regard the calculation result of the formula Pn-(Pcr2×Nc+Phr2×Nh) as the estimated power amount per hour when stopped. In addition, when the power saving target period is N hours, the power amount estimation unit 114 can regard Pn×N as the estimated power amount when not changed, regard the calculation result of the formula (Pn-(Pcr1×Nc+Phr1×Nh))×N as the estimated power amount when changed, and regard the calculation result of the formula (Pn-(Pcr2×Nc+Phr2×Nh))×N as the estimated power amount when stopped.

[0040] FIG. 5 shows reduced power information for identifying the reduced power amounts such as Pcr1, Pcr2, Phr1, and Phr2. The reduced power information is information indicating the correspondence between the operation mode, the change content, and the reduced power amount. The operation mode indicates the type such as cooling or heating. The change content indicates the change content of the operation state, such as stopping operation or the change content of the set temperature. The reduced power amount is the reduced power amount per hour secured by changing the operation state.

[0041] The first record indicates that stopping a power-saving target device in cooling operation will result in a power reduction of 1.1 kWh per hour. The second record indicates that raising the set temperature of a power-saving target device in cooling operation by 1°C will result in a power reduction of 0.15 kWh per hour. The third record indicates that raising the set temperature of a power-saving target device in cooling operation by 2°C will result in a power reduction of 0.30 kWh per hour. Note that in this embodiment, the power consumption of air conditioners used in power-saving target areas is similar, and the power reduction amount for each air conditioner will be the same if the changes are the same. The power reduction information is stored, for example, in memory unit 12.

[0042] When a power reduction request is received, the power amount estimation unit 114 estimates the estimated power amount after the change. In other words, when a power reduction request is received, the power amount estimation unit 114 estimates the total power consumption in the power saving target area during the power saving target period when the operation settings of the power saving target devices during the power saving target period are changed to reduce power consumption. For example, if the power saving target devices are air conditioners in cooling operation, the power amount estimation unit 114 estimates the total power consumption in the power saving target area during the power saving target period when the set temperature of each air conditioner during the power saving target period is raised by a specified temperature. The specified temperature may be 1°C or 2°C. The power amount estimation unit 114 is an example of a power amount estimation means.

[0043] The appliance control unit 115 remotely controls the appliances 300 used by consumers in the power-saving target area. For example, if the appliance 300 is an air conditioner, the appliance control unit 115 transmits a control command to the appliance 300 to change the operation mode of the appliance 300, the set temperature of the appliance 300, etc. In this embodiment, the appliance control unit 115 mainly controls the operation of the appliances 300 used in the power-saving target area that are power-saving target appliances during the power-saving target period.

[0044] Specifically, if the post-change estimated power amount estimated by the power amount estimating unit 114 does not exceed the target power amount, the device control unit 115 changes the operation settings of the power-saving target device during the power-saving period so as to reduce power consumption. Also, if the post-change estimated power amount exceeds the target power amount, the device control unit 115 stops operation of the power-saving target device during the power-saving period. In this way, if sufficient power saving is possible just by changing the operation settings of the power-saving target device, the device control unit 115 executes power saving by changing the operation settings of the power-saving target device. On the other hand, if sufficient power saving is not possible just by changing the operation settings of the power-saving target device, the device control unit 115 executes power saving by stopping the operation of the power-saving target device. The device control unit 115 is an example of device control means.

[0045] The device selection unit 116 selects a power-saving target device, which is a device 300 that is a target for power saving. It is desirable that the power-saving target device be a device 300 that has room for power saving. Therefore, it is desirable that the power-saving target device be a device 300 that is in operation. Furthermore, it is desirable that the power-saving target device have a large amount of power reduction secured by power saving. Therefore, it is desirable that the power-saving target device be a device 300 that consumes a large amount of power.

[0046] Therefore, the device selection unit 116 selects, as power-saving target devices, heating and cooling devices that are in operation among the devices 300 used in the power-saving target area. A heating and cooling device is a device that can perform cooling, heating, etc. by cooling operation, heating operation, etc. Examples of heating and cooling devices include air conditioners, floor heating devices, oil heaters, ceramic fan heaters, electric stoves, kotatsu, and heated carpets. The device selection unit 116 can determine whether the device 300 is in operation based on operation information acquired from the device 300. The device selection unit 116 is an example of a device selection means.

[0047] Furthermore, the device selection unit 116 may select power-saving target devices from among operating heating and cooling devices based on a history of control operations performed by users on the power-saving target devices during past power-saving target periods. A power-saving target device that was controlled by a user during a past power-saving target period is likely to be controlled by the user again during the next power-saving target period. For example, an air conditioner used by a user who is sensitive to heat is likely to have its set temperature lowered during the power-saving target period, even if the set temperature was raised by the device control device 100 at the start of the power-saving target period. Even if such an air conditioner is selected as a power-saving target device, it is considered unlikely to achieve any power-saving effects. Therefore, the device selection unit 116 excludes such an air conditioner from the power-saving target devices.

[0048] For example, the device selection unit 116 can select power-saving target devices based on the device selection information shown in FIG. 6. The device selection information is information for selecting a device 300 that is appropriate as a power-saving target device, and is information for identifying a device 300 to be excluded from the power-saving target devices. The device selection information is, for example, information indicating a correspondence between a consumer's ID (Identification), an air conditioning device ID, operation information before power-saving, details of power-saving control, whether or not the operation state has changed during power-saving, operation information after the change, and a power-saving tendency. The power-saving tendency is information indicating whether or not the device is suitable for power-saving, and is expressed as "high" or "low." A high power-saving tendency means that the device is likely to be used by a user with a high tolerance for power-saving control, is unlikely to be operated contrary to power-saving during power-saving, and is suitable as a power-saving target device.

[0049] The first record indicates that the air conditioning device indicated by the first record has a high tendency to save energy and is suitable for equipment targeted for power saving. This air conditioning device is an air conditioning device in which the user changed the set temperature during a past power saving period, but power saving has been promoted by reducing the amount of power consumed. Furthermore, the second record indicates that the air conditioning device indicated by the second record has a high tendency to save energy and is suitable for equipment targeted for power saving. This air conditioning device is an air conditioning device in which the user did not turn on cooling operation during a past power saving period, and power saving has been maintained.

[0050] In contrast, the third record indicates that the air conditioning apparatus indicated by the third record has a low tendency to save power and is not suitable as a power-saving target apparatus. This air conditioning apparatus is an air conditioning apparatus whose set temperature was changed by a user during a past power-saving target period, and whose power-saving target has been canceled due to an increase in power consumption. In this case, the apparatus selection unit 116 selects the air conditioning apparatus indicated by the first record and the air conditioning apparatus indicated by the second record as power-saving target apparatuses, and does not select the air conditioning apparatus indicated by the third record as a power-saving target apparatus. The apparatus selection information is stored in the storage unit 12 and is updated according to the content of the control operation during the power-saving target period.

[0051] Air conditioners that are not selected as power-saving target devices are excluded when calculating the estimated power amount at change and the estimated power amount at shutdown. For example, let Nc1 be the number of air conditioners in cooling operation that have a high tendency to save power, and Nh1 be the number of air conditioners in heating operation that have a high tendency to save power. In this case, the power amount estimation unit 114 can regard the result of the calculation formula Pn - (Pcr1 × Nc1 + Phr1 × Nh1) as the estimated power amount at change per hour. Furthermore, the power amount estimation unit 114 can regard the result of the calculation formula Pn - (Pcr2 × Nc1 + Phr2 × Nh1) as the estimated power amount at shutdown per hour.

[0052] The priority acquisition unit 117 acquires priority information indicating, for each consumer, which of comfort and power saving should be prioritized when responding to a power reduction request. The priority information is information indicating a policy for power saving for each consumer. The priority information is information acquired by aggregating selection result information acquired from each consumer. The selection result information is information indicating the selection result selected by the user as the priority when responding to a power reduction request, and is information indicating either comfort or power saving.

[0053] The priority acquisition unit 117 acquires selection result information from, for example, the terminal device 400 used by a user corresponding to each consumer. FIG. 7 shows a screen 420, which is a priority setting screen displayed by the terminal device 400. The priority setting screen is a screen for a user to set priorities when responding to a power reduction request. The screen 420 displays, for example, a customer number indicating the consumer's ID, an object for selecting either comfort or power saving, and the like. The terminal device 400 transmits selection result information indicating either comfort or power saving to the appliance control device 100.

[0054] The priority acquisition unit 117 generates priority information based on selection result information collected from the terminal device 400 corresponding to each consumer. FIG. 8 shows the priority information. The priority information is, for example, information indicating the correspondence between a consumer ID and a priority. The first record indicates that comfort is prioritized for the device 300 used by the consumer with ID UID01. The second record indicates that power saving is prioritized for the device 300 used by the consumer with ID UID02. The priority acquisition unit 117 is an example of a priority acquisition means.

[0055] Here, the device control unit 115 determines power-saving control for the power-saving target devices based on the priority information acquired by the priority acquisition unit 117. For example, when the priority information indicates comfort for a first consumer, the device control unit 115 changes the operation settings of the power-saving target devices used by the first consumer so that power consumption during the power-saving target period is reduced. In other words, the device control unit 115 does not stop operation of the power-saving target devices used by the first consumer during the power-saving target period even if the post-change estimated power amount exceeds the target power amount. In contrast, for example, when the priority information indicates power saving for a second consumer, the device control unit 115 stops operation of the power-saving target devices used by the second consumer during the power-saving target period if the post-change estimated power amount exceeds the target power amount.

[0056] Air conditioners that are not shut down are excluded when calculating the estimated power consumption when shut down. For example, let Nc2 be the number of air conditioners in cooling operation that are used by customers who have selected comfort, and Nh2 be the number of air conditioners in heating operation that are used by customers who have selected comfort. Here, it is assumed that there are no air conditioners that are not selected as equipment to be targeted for power saving. In this case, the power consumption estimation unit 114 can regard the result of the calculation formula Pn-(Pcr1×Nc2+Pcr2×(Nc-Nc2)+Phr1×Nh2+Phr2×(Nh-Nh2)) as the estimated power consumption per hour when shut down.

[0057] The first detection unit 118 detects a control operation on the device 300 using a remote controller. For example, the first detection unit 118 detects a control operation on the device 300 using a remote controller based on operation information acquired from the device 300 by the operation information acquisition unit 112. In particular, the first detection unit 118 detects a control operation on the power-saving target device by a user during a power-saving target period.

[0058] When there is a difference between the operating state indicated by the operating information acquired immediately after the start of the power-saving period and the operating state indicated by the operating information acquired during the power-saving period, the first detection unit 118 can determine that a control operation has been performed by the user. For example, when the operating information acquired immediately after the start of the power-saving period indicates a set temperature of 26°C and the operating information acquired during the power-saving period indicates a set temperature of 25°C, the first detection unit 118 determines that a user has performed an operation to change the set temperature.

[0059] The control operations detected by the first detection unit 118 can be adjusted as appropriate. For example, it is preferable that the first detection unit 118 detects control operations such as an operation to change the set temperature and an operation to switch the operation mode, because these control operations have a large impact on the amount of power consumed. Note that an operation to switch the operation mode includes an operation to turn on or off the cooling operation or the heating operation. In contrast, the first detection unit 118 does not need to detect control operations such as an operation to change the airflow direction or the airflow volume, because these control operations have a small impact on the amount of power consumed.

[0060] Here, when the first detection unit 118 detects a control operation on a power-saving target device by the user during the power-saving target period, the device control unit 115 terminates the ongoing power-saving control on the power-saving target device. The power-saving control is control that switches the operation settings to reduce power consumption or control that stops operation. If a user is dissatisfied with the power-saving control during the power-saving target period and wants to restore comfort, there is a high possibility that the user will perform such a control operation. Therefore, in such a case, the device control unit 115 prioritizes user comfort over power saving and terminates the ongoing power-saving control.

[0061] The second detection unit 119 detects a control operation on the device 300 using the terminal device 400. For example, when the terminal device 400 receives a control operation on the device 300 from a user, the terminal device 400 transmits control operation information indicating the content of this control operation to the device control apparatus 100. The second detection unit 119 included in the device control apparatus 100 receives this control operation information and thereby detects a control operation on the device 300 using the terminal device 400.

[0062] When the second detection unit 119 detects a control operation during the power-saving period, the notification unit 120 notifies the user that power-saving control is being executed on the power-saving target device in accordance with the power reduction request. For example, the notification unit 120 transmits notification information to the terminal device 400 notifying the user that power-saving control is being executed. Meanwhile, in response to receiving the notification information, the terminal device 400 notifies the user that power-saving control is being executed. The notification unit 120 is an example of a notification means.

[0063] The second detection unit 119 detects a further control operation on the power-saving target device using the terminal device 400. This control operation is an instruction to continue the previously executed control operation without halting it. When the second detection unit 119 detects a further control operation on the power-saving target device, the device control unit 115 ends the ongoing power-saving control on the power-saving target device. On the other hand, when the second detection unit 119 does not detect a further control operation on the power-saving target device, the device control unit 115 continues the power-saving control on the power-saving target device.

[0064] The device control unit 115 executes power-saving control only during the power-saving period. That is, the device control unit 115 changes the operating state of the power-saving target device at the start of the power-saving period and returns the operating state of the power-saving target device to the operating state before the change at the end of the power-saving period. The operating state is a concept that includes both the operating mode and the set temperature. With this configuration, it is possible to automatically restore user comfort after the end of the power-saving period.

[0065] However, if the device control unit 115 detects a control operation on a power-saving target device by a user during a power-saving period, the device control unit 115 maintains the operating state of the power-saving target device at the end of the power-saving period. In other words, in this case, the device control unit 115 does not return the operating state of the power-saving target device to the operating state before the change at the end of the power-saving period. This is because it is considered that the user is satisfied with the comfort after the control operation during the power-saving period.

[0066] Furthermore, if no user is detected at the end of the power-saving period, the device control unit 115 maintains the operating state of the power-saving target device at the end of the power-saving period. In other words, in this case, the device control unit 115 does not return the operating state of the power-saving target device to the operating state before the change at the end of the power-saving period. This is because, if there is no user at the end of the power-saving period, it is considered unnecessary to return the operating state of the power-saving target device to the operating state before the change, even by increasing the amount of power consumption.

[0067] Next, the device control process executed by the device controlling device 100 will be described with reference to the flowchart in Fig. 9. The device control process is executed, for example, after the power supply to the device controlling device 100 is turned on. Note that in the description of the device control process, descriptions of device control unrelated to a power reduction request will be omitted as appropriate.

[0068] First, the control unit 11 included in the device controlling device 100 determines whether or not a power reduction request has been received from the aggregator server 200 (step S101). If the control unit 11 determines that a power reduction request has not been received from the aggregator server 200 (step S101: NO), the control unit 11 returns the process to step S101. If the control unit 11 determines that a power reduction request has been received from the aggregator server 200 (step S101: YES), the control unit 11 determines whether or not the current time is before a specified time of the power saving target period (step S102). The specified time can be adjusted as appropriate. In this embodiment, the specified time is one hour.

[0069] If the control unit 11 determines that the current time is not before the specified time of the power saving period (step S102: NO), it returns the process to step S102. If the control unit 11 determines that the current time is before the specified time of the power saving period (step S102: YES), it executes a power saving preparation process (step S103). The power saving preparation process is a process for preparing power saving control in accordance with a power reduction request, and is a process that is executed before the specified time of the power saving period. The power saving preparation process will be described in detail with reference to FIG. 10.

[0070] First, the control unit 11 collects power amount information from each consumer (step S201). The control unit 11 collects power amount information from the smart meter 320 of each consumer via route B. After completing the process of step S201, the control unit 11 estimates the estimated power amount when no change is made (step S202). For example, the control unit 11 estimates the estimated power amount when no change is made, which is the total power consumption during the power saving period in the power saving target area when no power saving control is performed, based on the total power consumption during the most recent hour in the power saving target area.

[0071] When the control unit 11 completes the process of step S202, it determines whether the estimated power amount when not changed is less than the target power amount (step S203). If the control unit 11 determines that the estimated power amount when not changed is less than the target power amount (step S203: YES), it decides not to execute power saving control (step S204). In other words, if it is estimated that the power reduction request will be satisfied without executing power saving control, the control unit 11 does not execute power saving.

[0072] When the control unit 11 determines that the unchanged estimated power amount is not less than the target power amount (step S203: NO), it collects operation information from each device 300 (step S205). After completing the process of step S205, the control unit 11 estimates the changed estimated power amount (step S206). For example, the control unit 11 identifies heating and cooling devices that are in operation among the devices 300 in the power-saving target area based on the operation information collected from each device 300 in the power-saving target area.

[0073] The control unit 11 identifies operating heating and cooling equipment with a high tendency to save power from among the operating heating and cooling equipment based on the history of control operations on each power-saving target equipment during a past power-saving target period. The control unit 11 selects the operating heating and cooling equipment with a high tendency to save power as the power-saving target equipment. The control unit 11 estimates the amount of reduced power that will be secured when each power-saving target equipment is operated in energy-saving operation based on the reduced power amount information. The control unit 11 calculates the estimated amount of power when changed by subtracting the estimated amount of reduced power from the estimated estimated amount of power when not changed.

[0074] When the control unit 11 completes the process of step S206, it determines whether the post-change estimated power amount is less than the target power amount (step S207). If the control unit 11 determines that the post-change estimated power amount is less than the target power amount (step S207: YES), it decides to execute power saving control by changing the set temperature (step S208). In other words, if it is estimated that the power reduction request will be satisfied by power saving control by changing the set temperature, the control unit 11 executes power saving by changing the set temperature.

[0075] When the control unit 11 determines that the changed estimated power amount is not less than the target power amount (step S207: NO), it estimates the estimated power amount when the devices are stopped (step S209). For example, the control unit 11 classifies the power-saving target devices into power-saving target devices for which power saving is prioritized and power-saving target devices for which comfort is prioritized, based on the priority information. The control unit 11 estimates the amount of reduced power that will be secured when each power-saving target device for which power saving is prioritized is stopped during the power-saving target period and each power-saving target device for which comfort is prioritized is operated in energy-saving operation, based on the reduced power amount information. The control unit 11 calculates the estimated power amount when the devices are stopped by subtracting the estimated reduced power amount from the estimated estimated power amount when the devices are not changed. Note that energy-saving operation is operation when the operation settings are changed to reduce the amount of power consumed.

[0076] When the control unit 11 completes the process of step S209, it determines whether the estimated power amount at stop is less than the target power amount (step S210). If the control unit 11 determines that the estimated power amount at stop is less than the target power amount (step S210: YES), it decides to execute power saving control by stopping operation (step S211). In other words, if it is estimated that the power reduction request can be satisfied by power saving control by stopping operation, the control unit 11 executes power saving by stopping operation.

[0077] When the control unit 11 determines that the estimated power amount during shutdown is not less than the target power amount (step S210: NO), it decides not to execute power saving control (step S212). In other words, when it is estimated that the power reduction request cannot be satisfied even by power saving control by stopping operation, the control unit 11 does not execute power saving. When the control unit 11 completes the processing of step S204, step S208, step S211, or step S212, it notifies the aggregator server 200 of the expected power reduction (step S213).

[0078] For example, the control unit 11 notifies the aggregator server 200 of the estimated amount of power consumption when control scheduled for the power saving period is executed. For example, when power saving control by changing the set temperature is scheduled for the power saving period, the control unit 11 notifies the aggregator server 200 of the estimated amount of power after change. Furthermore, when power saving control by stopping operation is scheduled for the power saving period, the control unit 11 notifies the aggregator server 200 of the estimated amount of power when stopped. Furthermore, when power saving control is not scheduled for the power saving period, the control unit 11 notifies the aggregator server 200 of the estimated amount of power without change. When the control unit 11 completes the processing of step S213, the power saving preparation processing is completed.

[0079] When the control unit 11 completes the power saving preparation process in step S103, it determines whether the current time is the start time of the power saving period (step S104). If the control unit 11 determines that the current time is not the start time of the power saving period (step S104: NO), it returns the process to step S104. If the control unit 11 determines that the current time is the start time of the power saving period (step S104: YES), it executes power saving start process (step S105). The power saving start process is a process that is executed at the start of the power saving period. The power saving start process will be described in detail with reference to FIG. 11.

[0080] First, the control unit 11 saves the operation information immediately before the start of power saving (step S301). For example, the control unit 11 stores the operation information acquired immediately before the operation mode, the set temperature, etc. are changed due to power saving control in the storage unit 12. After completing the processing of step S301, the control unit 11 determines whether or not to execute power saving control by changing the set temperature (step S302). When the control unit 11 determines that power saving control by changing the set temperature is to be executed (step S302: YES), it instructs each power saving target device to change the set temperature (step S303).

[0081] When the control unit 11 determines that power saving control by changing the set temperature will not be executed (step S302: NO), it determines whether or not to execute power saving control by stopping operation (step S304). When the control unit 11 determines that power saving control by stopping operation will be executed (step S304: YES), it instructs each power saving target device to stop operation or change the set temperature (step S305). For example, the control unit 11 instructs each power saving target device for which power saving is prioritized to stop operation, and instructs each power saving target device for which comfort is prioritized to change the set temperature.

[0082] When the control unit 11 completes the processing of step S303 or step S305, or when it determines not to execute power saving control by stopping operation (step S304: NO), it saves the operating state immediately after the start of power saving (step S306). For example, the control unit 11 stores the operating information acquired immediately after the operation mode, set temperature, etc. are changed by power saving control in the storage unit 12. When the control unit 11 completes the processing of step S306, it completes the power saving start processing.

[0083] When the control unit 11 completes the power saving start process in step S105, it executes power saving process (step S106). The power saving process is a process that is executed during the power saving period. The power saving process will be described in detail with reference to FIG. 12.

[0084] First, the control unit 11 collects operation information from each device 300 (step S401). After completing the process of step S401, the control unit 11 determines whether or not a control operation by a user on a power-saving target device has been detected (step S402). For example, the control unit 11 determines whether or not the operation mode or set temperature indicated by the operation information acquired from the power-saving target device has changed. When the control unit 11 determines that a control operation by a user on a power-saving target device has been detected (step S402: YES), it saves the content of the control operation (step S403). For example, the control unit 11 stores information indicating the operation mode and set temperature before and after the control operation in the storage unit 12.

[0085] Upon completing the process of step S403, the control unit 11 determines whether the detected control operation is a control operation that reduces the amount of power consumption (step S404). Control operations that reduce the amount of power consumption include a control operation that instructs stopping air conditioning operation, a control operation that instructs raising the set temperature of air conditioning operation, and the like. When the control unit 11 determines that the detected control operation is a control operation that reduces the amount of power consumption (step S404: YES), it sets the power-saving target appliance for which the control operation was detected as an appliance that is likely to save power (step S405). For example, the control unit 11 updates the appliance selection information stored in the storage unit 12 so that the power-saving tendency of the record corresponding to this power-saving target appliance becomes "high."

[0086] When the control unit 11 determines that the detected control operation is not a control operation that reduces power consumption (step S404: NO), it determines whether the detected control operation is a control operation that increases power consumption (step S406). Control operations that increase power consumption include a control operation that instructs the start of air conditioning operation, a control operation that instructs the lowering of the set temperature for air conditioning operation, and the like. When the control unit 11 determines that the detected control operation is a control operation that increases power consumption (step S406: YES), it sets the power-saving target appliance for which the control operation was detected as an appliance with a low likelihood of power saving (step S407). For example, the control unit 11 updates the appliance selection information stored in the storage unit 12 so that the power-saving tendency of the record corresponding to this power-saving target appliance becomes "low."

[0087] When the control unit 11 completes the process of step S405 or step S407, when it determines that a control operation by a user on a power-saving target device has not been detected (step S402: NO), or when it determines that the detected control operation is not a control operation that increases the amount of power consumed (step S406: NO), it collects power amount information from each consumer (step S408). When the control unit 11 completes the process of step S408, it determines whether or not it is the end time of the power-saving target period (step S409). When it determines that it is not the end time of the power-saving target period (step S409: NO), it returns the process to step S401. When it determines that it is the end time of the power-saving target period (step S409: YES), the control unit 11 completes the power-saving process.

[0088] When the control unit 11 completes the power saving process in step S106, it executes power saving end process (step S107). The power saving end process is a process that is executed at the end of the power saving target period. The power saving end process will be described in detail with reference to FIG. 13.

[0089] First, the control unit 11 collects operation information from each device 300 (step S501). After completing the process of step S501, the control unit 11 determines whether there is any power-saving target device whose operation information has been changed (step S502). For example, the control unit 11 determines whether there is any power-saving target device whose operation mode or set temperature immediately before the start of power-saving differs from the current operation mode or set temperature due to power-saving control or a control operation by a user. A power-saving target device whose operation information has not been changed is a power-saving target device for which power-saving control is not being executed, or a power-saving target device for which power-saving control has been executed but which has been returned to the operating state before the start of power-saving control due to a control operation by a user during power-saving control.

[0090] When the control unit 11 determines that there is a power-saving target device whose operation information has been changed (step S502: YES), it determines whether or not a control operation has been performed during the power-saving target period (step S503). For example, the control unit 11 refers to the information stored in the storage unit 12 in the process of step S403, and determines whether or not an operation to change the operation mode or set temperature has been performed for this power-saving target device during the power-saving target period.

[0091] When the control unit 11 determines that no control operation has been performed during the power-saving period (step S503: NO), it determines whether a person is detected (step S504). For example, the control unit 11 determines whether a person is present around the power-saving target device based on operation information acquired from the power-saving target device. For example, the control unit 11 determines whether a person is present around the power-saving target device based on the detection result of a human presence sensor included in the operation information and an infrared image of an infrared sensor included in the operation information.

[0092] When the control unit 11 determines that a person has been detected (step S504: YES), it returns the operating state of the power-saving target device to the operating state immediately before the power-saving start (step S505). For example, the control unit 11 returns the operating mode and set temperature of such a power-saving target device to the operating mode and set temperature before the change due to the power-saving control. In this way, for a power-saving target device whose operating mode or set temperature has been changed due to the power-saving control, whose operating mode or set temperature has not been changed by the user during the power-saving control, and in which a person is present around, the control unit 11 returns the operating mode and set temperature to the operating mode and set temperature before the power-saving control in order to restore user comfort.

[0093] When the control unit 11 determines that there is no power-saving target device whose operation information has been changed (step S502: NO), when it determines that a control operation has been performed during the power-saving target period (step S503: YES), when it determines that no person has been detected (step S504: NO), or when it completes the processing of step S505, it notifies the aggregator server 200 of the power reduction result (step S506). For example, the control unit 11 transmits information indicating the total power consumption of the power-saving target area during the power-saving target period to the aggregator server 200. When the control unit 11 completes the processing of step S506, it completes the power-saving end processing. When the control unit 11 completes the power-saving end processing of step S107, it returns the processing to step S101.

[0094] In this embodiment, if the power reduction request can be met by changing the operation settings of the power-saving target device, the power reduction request is met by changing the operation settings of the power-saving target device, and if the power reduction request cannot be met by changing the operation settings of the power-saving target device, the power reduction request is met by stopping the operation of the power-saving target device. Therefore, according to this embodiment, appropriate power saving can be achieved without imposing too much burden on the user.

[0095] Furthermore, in this embodiment, whether to permit or prohibit the shutdown of the power-saving target equipment used by the consumer is determined based on priority information indicating, for each consumer, which of comfort and power saving should be prioritized when responding to a power reduction request. Therefore, according to this embodiment, power saving can be achieved while taking into consideration the consumer's wishes regarding the power reduction request.

[0096] In addition, in this embodiment, if a control operation by a user on a power-saving target device is detected during a power-saving period, the ongoing power-saving control on the power-saving target device is terminated. Therefore, according to this embodiment, power saving that is unacceptable to the consumer can be eliminated, thereby ensuring user comfort.

[0097] In addition, in this embodiment, if a control operation by the user on the power-saving target device is detected after notification that power-saving control is being executed, the ongoing power-saving control on the power-saving target device is terminated. Therefore, according to this embodiment, the consumer can decide whether to continue power-saving depending on their tolerance for power-saving.

[0098] Furthermore, in this embodiment, operating heating and cooling appliances are selected as the power-saving target appliances from among the appliances 300 used in the power-saving target area. Therefore, according to this embodiment, the appliances 300 suitable for power saving are selected as the power-saving target appliances, and therefore highly accurate power saving can be expected.

[0099] Furthermore, in this embodiment, the power-saving target appliances are selected from among the operating heating and cooling appliances based on the history of control operations performed by the user on the power-saving target appliances during past power-saving periods. Therefore, according to this embodiment, the appliances 300 that are more suitable for power saving are selected as the power-saving target appliances, and more accurate power saving can be expected.

[0100] In addition, in this embodiment, the operating state of the power-saving target device is changed at the start of the power-saving target period, and the operating state of the power-saving target device is returned to the operating state before the change at the end of the power-saving target period. Therefore, according to this embodiment, it is possible to restore user comfort at the end of the power-saving target period.

[0101] In addition, in this embodiment, if a control operation by a user on a power-saving target device is detected during a power-saving period, the operating state of the power-saving target device is maintained at the end of the power-saving period. Therefore, according to this embodiment, it is possible to prevent an increase in power consumption due to an operation that is considered less necessary at the end of the power-saving period.

[0102] In addition, in this embodiment, if a user is not detected at the end of the power-saving period, the operating state of the power-saving target device is maintained at the end of the power-saving period. Therefore, according to this embodiment, it is possible to prevent an increase in power consumption due to an operation that is considered to be less necessary at the end of the power-saving period.

[0103] Furthermore, in this embodiment, power amount information indicating the amount of power consumed by each consumer in the power saving target area is collected from the smart meter 320 of each consumer via the communication network 530 within each consumer's home. Therefore, according to this embodiment, the appliance control device 100 can execute power saving control without receiving power amount information from the aggregator server 200.

[0104] (Embodiment 2) In the first embodiment, an example was described in which priority information indicating which of comfort and power saving should be prioritized for each consumer when responding to a power reduction request is used. In the present embodiment, an example is described in which priority information indicating which of comfort and power saving should be prioritized for each device when responding to a power reduction request is used. Note that descriptions of configurations and functions similar to those in the first embodiment will be omitted or simplified as appropriate.

[0105] In this embodiment, the priority acquisition unit 117 acquires priority information indicating, for each device 300, which of comfort and power saving should be prioritized when responding to a power reduction request. In this embodiment, the priority information is information indicating a policy for power saving for each device 300. The priority information is information acquired by aggregating selection result information acquired from each consumer. The selection result information is information indicating a selection result selected by a user as a priority when responding to a power reduction request, and is information indicating either comfort or power saving for each device 300.

[0106] The priority acquisition unit 117 acquires selection result information from, for example, the terminal device 400 used by a user corresponding to each consumer. FIG. 14 shows a screen 430, which is a priority setting screen displayed by the terminal device 400. The priority setting screen is a screen on which a user sets priorities for responding to a power reduction request for each device 300. The screen 430 displays, for example, a customer number indicating the consumer's ID, an object for selecting either comfort or power saving for each device 300, and the like. The terminal device 400 transmits selection result information indicating either comfort or power saving for each device 300 to the device control device 100.

[0107] The priority acquisition unit 117 generates priority information based on selection result information collected from the terminal devices 400 corresponding to each consumer. FIG. 15 shows the priority information. The priority information is, for example, information indicating the correspondence between consumer IDs, air conditioning device IDs, and priorities. The first record indicates that comfort is prioritized for a device 300 with an ID of RID01 that is used by a consumer with an ID of UID01. The second record indicates that power saving is prioritized for a device 300 with an ID of RID04 that is used by a consumer with an ID of UID01. In this way, in this embodiment, different priorities can be set for devices 300 used by the same consumer.

[0108] The device control unit 115 determines power-saving control for the power-saving target devices based on the priority information acquired by the priority acquisition unit 117. For example, if the priority information indicates comfort for the first power-saving target device, the device control unit 115 changes the operation settings for the first power-saving target device so that power consumption during the power-saving target period is reduced. In other words, the device control unit 115 does not stop operation of the first power-saving target device during the power-saving target period even if the changed estimated power amount exceeds the target power amount. In contrast, for example, if the priority information indicates power saving for the second power-saving target device, the device control unit 115 stops operation of the second power-saving target device during the power-saving target period if the changed estimated power amount exceeds the target power amount.

[0109] In this embodiment, whether to permit or prohibit the stopping of operation of power-saving target devices used by consumers is determined based on priority information indicating, for each device 300, which of comfort and power saving should be prioritized when responding to a power reduction request. Therefore, according to this embodiment, power saving can be achieved in consideration of the detailed wishes of consumers regarding power reduction requests.

[0110] (Variation) Although the embodiments have been described above, modifications and applications in various forms are possible. It is up to the discretion of the individual to adopt any of the configurations, functions, and operations described in the above embodiments. Furthermore, in addition to the above-described configurations, functions, and operations, additional configurations, functions, and operations may be adopted. Furthermore, the configurations, functions, and operations described in the above embodiments can be freely combined.

[0111] In the first embodiment, an example has been described in which the device 300 selected as the power-saving target device is an air conditioner in operation. The device 300 selected as the power-saving target device is not limited to this example. The device 300 selected as the power-saving target device may also be a floor heating device in operation, an oil heater in operation, a ceramic fan heater in operation, an electric space heater in operation, a kotatsu table in operation, a heated carpet in operation, or the like. Even for these power-saving target devices, either changing the operation settings or stopping operation can be selected as the method for achieving power saving.

[0112] In the first embodiment, an example has been described in which the device 300 is excluded from the power-saving target devices based on a history of past control operations, more specifically, a history of control operations performed on the device 300 by a user during a past power-saving target period in which the device 300 was selected as a power-saving target device. The device 300 does not necessarily have to be excluded from the power-saving target devices based on the history of past control operations.

[0113] In addition, in the first embodiment, an example has been described in which the device 300 is excluded from the power-saving target devices depending on whether or not a control operation was performed during a past power-saving target period. The device 300 may be excluded from the power-saving target devices depending on the number of control operations, frequency, etc., rather than the presence or absence of a control operation. For example, if the number of control operations during the most recent year is five or more, the device 300 may be excluded from the power-saving target devices. In this case, it is preferable that the number of control operations be recorded in the record of the device selection information instead of the power-saving tendency.

[0114] In the first embodiment, an example was described in which the air conditioners have similar amounts of power consumption and the amount of power reduction in each air conditioner is the same. However, the air conditioners may have different amounts of power consumption and different amounts of power reduction in each air conditioner. In this case, for example, it is preferable that the power reduction information indicate the amount of power reduction for each model of air conditioner.

[0115] In the first embodiment, an example was described in which the device selection information is shared between cooling operation and heating operation. Separate device selection information may be prepared for cooling operation and heating operation. In this case, it is possible to set different power saving tendencies in the air conditioner for cooling operation and heating operation. Such a configuration is effective for, for example, a user who can tolerate heat but cannot tolerate cold. Furthermore, such a configuration is effective for, for example, a room whose structure makes it easy for users to tolerate restrictions on cooling but difficult for users to tolerate restrictions on heating.

[0116] In the first embodiment, an example has been described in which it is determined whether or not to permit the operation of the power-saving target devices to be stopped in the power-saving control based on the priority information. The power-saving control may permit the operation of all the power-saving target devices to be stopped.

[0117] In the first embodiment, an example has been described in which power saving control is not executed when the estimated power consumption during stoppage is equal to or greater than the target power amount. When the estimated power consumption during stoppage is equal to or greater than the target power amount, power saving control by stopping operation may be executed. This is because in this case, even if power saving that satisfies the power reduction request cannot be achieved, power saving can still be contributed to.

[0118] In the first embodiment, an example has been described in which a control operation is possible using a remote controller and terminal device 400, the first detection unit 118 detects a control operation using the remote controller from the operation information, and the second detection unit 119 detects a control operation using the terminal device 400. A control operation may be possible using the main body of the device 300, and the first detection unit 118 may detect a control operation using the main body of the device 300 from the operation information. Alternatively, either a control operation using a remote controller or a control operation using the terminal device 400 may be possible.

[0119] In the first embodiment, an example has been described in which, when the second detection unit 119 detects a control operation using the terminal device 400, the notification unit 120 notifies the user that power-saving control is in progress. When the first detection unit 118 detects a control operation using a remote controller, the notification unit 120 may notify the user that power-saving control is in progress. In this case, if no further control operation is detected, the control based on the initial control operation may be released and power-saving control may be resumed. Alternatively, in this case, the control based on the initial control operation may be suspended until a further control operation is detected. In this case, the remote controller that has detected the user's control operation executes control in accordance with this control operation after obtaining permission from the device control device 100.

[0120] In the above embodiment, the CPU in the control unit 11 executes a program stored in the ROM or the storage unit 12 to function as each unit shown in FIG. 4 . However, in the present disclosure, the control unit 11 may be dedicated hardware. Dedicated hardware may be, for example, a single circuit, a composite circuit, a programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. When the control unit 11 is dedicated hardware, the functions of each unit may be realized by individual hardware, or the functions of each unit may be realized collectively by a single piece of hardware. Furthermore, some of the functions of each unit may be realized by dedicated hardware, and the other functions may be realized by software or firmware. In this way, the control unit 11 can realize each of the above-described functions by hardware, software, firmware, or a combination thereof.

[0121] By applying an operating program that defines the operation of the device control device according to the present disclosure to a computer such as an existing personal computer or information terminal device, the computer can be made to function as the device control device according to the present disclosure. Furthermore, the method of distribution of such a program is arbitrary, and for example, the program may be stored on a computer-readable recording medium such as a CD-ROM (Compact Disk ROM), a DVD (Digital Versatile Disk), an MO (Magneto Optical Disk), or a memory card, or may be distributed via a communication network such as the Internet.

[0122] The present disclosure allows various embodiments and modifications without departing from the broad spirit and scope of the present disclosure. Furthermore, the above-described embodiments are intended to explain the present disclosure and do not limit the scope of the present disclosure. That is, the scope of the present disclosure is defined by the claims, not the embodiments. Various modifications made within the scope of the claims and the meaning of equivalent disclosures are considered to be within the scope of the present disclosure.

[0123] Various aspects of the present disclosure are summarized below as appendices.

[0124] (Appendix 1) an electric power amount estimation means for estimating, when receiving a power reduction request that requests reducing total electric power consumption so that the total electric power consumption in a power-saving target area during a power-saving target period does not exceed a target electric power amount, the total electric power consumption when operation settings of power-saving target devices that are power-saving target devices among devices used in the power-saving target area during the power-saving target period are changed so as to reduce power consumption; and device control means for changing the operation settings of the power-saving target device during the power-saving target period so as to reduce power consumption when the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, and for stopping operation of the power-saving target device during the power-saving target period when the changed estimated power amount exceeds the target power amount. Equipment control device. (Appendix 2) a priority acquisition means for acquiring priority information indicating, for each consumer, what should be prioritized between comfort and power saving when responding to the power reduction request; When the priority information acquired by the priority acquisition means indicates comfort for a first consumer, the equipment control means changes the operation settings of the power-saving target equipment used by the first consumer so that power consumption during the power-saving target period is reduced even if the changed estimated power amount exceeds the target power amount, and does not stop operation during the power-saving target period. 10. The device control device of claim 1. (Appendix 3) a priority acquisition means for acquiring priority information indicating which of comfort and power saving should be prioritized for each device when responding to the power reduction request; When the priority information acquired by the priority acquisition means indicates comfort for a first power-saving target device, the device control means changes the operation settings for the first power-saving target device so as to reduce power consumption during the power-saving target period even if the changed estimated power amount exceeds the target power amount, and does not stop operation during the power-saving target period. 10. The device control device of claim 1. (Appendix 4) when the device control means detects a control operation on the power-saving target device by a user during the power-saving target period, the device control means terminates the ongoing power-saving control on the power-saving target device. 4. A device control device according to any one of appendices 1 to 3. (Appendix 5) a notification means for notifying the power-saving target device that power-saving control is being executed in accordance with the power reduction request when the control operation is detected during the power-saving target period; When the device control means detects a further control operation by the user, the device control means terminates the ongoing power-saving control for the power-saving target device. 5. The device control device according to claim 4. (Appendix 6) an equipment selection means for selecting, from among the equipment used in the power-saving target area, a heating and cooling equipment that is in operation as the power-saving target equipment; 6. A device control device according to any one of appendices 1 to 5. (Appendix 7) the appliance selection means selects the appliance to be power-saving from among the operating heating and cooling appliances based on a history of control operations performed by a user on the appliance to be power-saving during the past power-saving period; 7. The device control device according to claim 6. (Appendix 8) the device control means changes the operation state of the power-saving target device at the start of the power-saving target period, and returns the operation state of the power-saving target device to the operation state before the change at the end of the power-saving target period; 8. A device control device according to any one of appendices 1 to 7. (Appendix 9) When the device control means detects a control operation on the power-saving target device by a user during the power-saving target period, the device control means maintains the operating state of the power-saving target device at the end of the power-saving target period. 9. The device control device according to claim 8. (Appendix 10) the device control means maintains the operating state of the power-saving target device at the end of the power-saving target period if no user is detected at the end of the power-saving target period; 10. The device control device according to claim 8 or 9. (Appendix 11) an electric energy information collection means for collecting electric energy information indicating the amount of power consumed by each consumer from a smart meter used in each consumer within the power saving target area via a communication network within each consumer's home; the power amount estimation means estimates the total power consumption based on the power amount information collected by the power amount information collection means. 11. A device control device according to any one of appendices 1 to 10. (Appendix 12) A power management system including an aggregator server and an appliance control device, The aggregator server a request transmission means for transmitting a power reduction request to the appliance control device, the request being a request to reduce the total amount of power consumption so that the total amount of power consumption in a power saving target area during a power saving target period does not exceed a target power amount; The device control device an electric power amount estimation means for estimating the total electric power amount when the electric power reduction request is received from the aggregator server and an operation setting of an electric power saving target device, which is an electric power saving target device among devices used in the electric power saving target area, is changed so as to reduce electric power consumption during the electric power saving target period; and device control means for changing the operation settings of the power-saving target device during the power-saving target period so as to reduce power consumption when the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, and for stopping operation of the power-saving target device during the power-saving target period when the changed estimated power amount exceeds the target power amount. Power management system. (Appendix 13) When a power reduction request is received that requests reducing total power consumption so that the total power consumption within a power-saving target area during a power-saving target period does not exceed a target power amount, the total power consumption is estimated when operation settings of power-saving target devices that are power-saving target devices among devices used within the power-saving target area during the power-saving target period are changed so as to reduce power consumption; If the estimated total power consumption amount after change does not exceed the target power amount, the operation setting of the power-saving target device during the power-saving target period is changed so as to reduce power consumption, and if the estimated total power consumption amount after change exceeds the target power amount, the operation of the power-saving target device during the power-saving target period is stopped. Equipment control methods. (Appendix 14) Computer, a power amount estimation means for estimating, when receiving a power reduction request that requests reducing total power consumption so that the total power consumption within a power-saving target area during a power-saving target period does not exceed a target power amount, the total power consumption when operation settings of power-saving target devices that are power-saving target devices among devices used within the power-saving target area during the power-saving target period are changed so as to reduce power consumption; when the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, the operation setting of the power-saving target device during the power-saving target period is changed so as to reduce power consumption, and when the changed estimated power amount exceeds the target power amount, the operation of the power-saving target device during the power-saving target period is stopped. program. [Industrial Applicability]

[0125] The present disclosure is applicable to power management systems. [Explanation of symbols]

[0126] 11, 41 control unit, 12, 42 memory unit, 15, 45 communication unit, 43 display unit, 44 operation reception unit, 100 equipment control device, 111 power amount information collection unit, 112 operation information acquisition unit, 113 reduction request unit, 114 power amount estimation unit, 115 equipment control unit, 116 equipment selection unit, 117 priority acquisition unit, 118 first detection unit, 119 second detection unit, 120 notification unit, 200 aggregator server, 211 reduction request transmission unit, 300 equipment, 310 relay device, 320 smart meter, 400 terminal device, 420, 430 screen, 510, 520, 530 communication network, 1000 power management system

Claims

1. an electric power amount estimation means for estimating, when receiving a power reduction request that requests reducing total electric power consumption so that the total electric power consumption in a power-saving target area during a power-saving target period does not exceed a target electric power amount, the total electric power consumption when operation settings of power-saving target devices that are power-saving target devices among devices used in the power-saving target area during the power-saving target period are changed so as to reduce power consumption; and device control means for changing the operation settings of the power-saving target device during the power-saving target period so as to reduce power consumption when the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, and for stopping operation of the power-saving target device during the power-saving target period when the changed estimated power amount exceeds the target power amount. Equipment control device.

2. a priority acquisition means for acquiring priority information indicating, for each consumer, what should be prioritized between comfort and power saving when responding to the power reduction request; When the priority information acquired by the priority acquisition means indicates comfort for a first consumer, the equipment control means changes the operation settings of the power-saving target equipment used by the first consumer so that power consumption during the power-saving target period is reduced even if the changed estimated power amount exceeds the target power amount, and does not stop operation during the power-saving target period. The equipment control device according to claim 1 .

3. a priority acquisition means for acquiring priority information indicating which of comfort and power saving should be prioritized for each device when responding to the power reduction request; When the priority information acquired by the priority acquisition means indicates comfort for a first power-saving target device, the device control means changes the operation settings of the first power-saving target device so as to reduce power consumption during the power-saving target period even if the changed estimated power amount exceeds the target power amount, and does not stop operation during the power-saving target period. The equipment control device according to claim 1 .

4. when the device control means detects a control operation on the power-saving target device by a user during the power-saving target period, the device control means terminates the ongoing power-saving control on the power-saving target device. The device control device according to any one of claims 1 to 3.

5. a notification means for notifying the power-saving target device that power-saving control is being executed in accordance with the power reduction request when the control operation is detected during the power-saving target period; When the device control means detects a further control operation by the user, the device control means terminates the ongoing power-saving control for the power-saving target device. The equipment control device according to claim 4 .

6. an equipment selection means for selecting, from among the equipment used in the power-saving target area, a heating and cooling equipment that is in operation as the power-saving target equipment; The device control device according to any one of claims 1 to 3.

7. the appliance selection means selects the appliance to be power-saving from among the operating heating and cooling appliances based on a history of control operations performed by a user on the appliance to be power-saving during the past power-saving period; The equipment control device according to claim 6 .

8. the device control means changes the operation state of the power-saving target device at the start of the power-saving target period, and returns the operation state of the power-saving target device to the operation state before the change at the end of the power-saving target period; The device control device according to any one of claims 1 to 3.

9. When the device control means detects a control operation on the power-saving target device by a user during the power-saving target period, the device control means maintains the operating state of the power-saving target device at the end of the power-saving target period. The equipment control device according to claim 8 .

10. the device control means maintains the operating state of the power-saving target device at the end of the power-saving target period if no user is detected at the end of the power-saving target period; The equipment control device according to claim 8 .

11. an electric energy information collection means for collecting electric energy information indicating the amount of power consumed by each consumer from a smart meter used in each consumer within the power saving target area via a communication network within each consumer's home; the power amount estimation means estimates the total power consumption based on the power amount information collected by the power amount information collection means. The device control device according to any one of claims 1 to 3.

12. A power management system including an aggregator server and an appliance control device, The aggregator server a request transmission means for transmitting a power reduction request to the appliance control device, the request being a request to reduce the total amount of power consumption so that the total amount of power consumption in a power saving target area during a power saving target period does not exceed a target power amount; The device control device an electric power amount estimation means for estimating the total electric power amount when the electric power reduction request is received from the aggregator server and an operation setting of an electric power saving target device, which is an electric power saving target device among devices used in the electric power saving target area, is changed so as to reduce electric power consumption during the electric power saving target period; and device control means for changing the operation settings of the power-saving target device during the power-saving target period so as to reduce power consumption when the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, and for stopping operation of the power-saving target device during the power-saving target period when the changed estimated power amount exceeds the target power amount. Power management system.

13. When a power reduction request is received that requests reducing total power consumption so that the total power consumption within a power-saving target area during a power-saving target period does not exceed a target power amount, the total power consumption is estimated when operation settings of power-saving target devices that are power-saving target devices among devices used within the power-saving target area during the power-saving target period are changed so as to reduce power consumption; If the estimated total power consumption amount after change does not exceed the target power amount, the operation setting of the power-saving target device during the power-saving target period is changed so as to reduce power consumption, and if the estimated total power consumption amount after change exceeds the target power amount, the operation of the power-saving target device during the power-saving target period is stopped. Equipment control methods.

14. Computer, a power amount estimation means for estimating, when receiving a power reduction request that requests reducing total power consumption so that the total power consumption within a power-saving target area during a power-saving target period does not exceed a target power amount, the total power consumption when operation settings of power-saving target devices that are power-saving target devices among devices used within the power-saving target area during the power-saving target period are changed so as to reduce power consumption; when the changed estimated power amount, which is the total power consumption amount estimated by the power amount estimation means, does not exceed the target power amount, the operation setting of the power-saving target device during the power-saving target period is changed so as to reduce power consumption, and when the changed estimated power amount exceeds the target power amount, the operation of the power-saving target device during the power-saving target period is stopped. program.

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