JP2013081263A - Demand control device, demand control method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select an apparatus according to a life pattern of each home, and suppress power consumption of the apparatus.SOLUTION: A demand control device 10 comprises: a measurement unit 19 for measuring power consumption which is consumed by each of a plurality of pieces of apparatus; and a calculation unit 11. The calculation unit 11 estimates transition of power consumption in future for each of the plurality of pieces of apparatus on the basis of the power consumption measured by the measurement unit 19. Also, the calculation unit 11 selects an apparatus as a control target among the plurality of pieces of apparatus on the basis of the estimated transition of power consumption. Then, the calculation unit 11 suppresses output of the selected apparatus.

Description

  The present invention relates to a demand control device, a demand control method, and a program.

  A fee paid to an electric power company by a company that consumes power is determined based on the demand value. The demand value is, for example, the maximum value in the past year among the average value (kW unit) of power consumed in 30 minutes by a company or the like. By reducing the demand value, the charge can be kept low.

  Further, even at home, for example, it is possible to save power by reducing the maximum daily value of power consumed by equipment in a residence (hereinafter referred to as power consumption). Hereinafter, the maximum value of power consumption is simply referred to as demand. In this way, efforts are made to reduce demand in companies and homes.

  The demand can be controlled by suppressing the power consumption of the device in operation (see, for example, Patent Document 1). Specifically, the operation is performed by stopping an operating device or putting the device into operation with power saving. In addition, demand control is an important technology related to smart grids that are attracting attention in recent years as well as power saving.

  When controlling demand, a device is selected according to a predetermined priority order, and power consumption of this device is suppressed. The apparatus disclosed in Patent Literature 1 includes means for changing the priority order of devices. For example, this apparatus preferentially stops the air conditioner in the living room during meals, and preferentially stops the air conditioner in the dining room at other times. That is, the demand can be controlled according to the situation.

JP-A-5-103425

  The priority order of devices varies depending on the lifestyle pattern of the home. For example, the equipment to be stopped is different between a household that operates an air conditioner in a cafeteria before eating and a household that uses an IH (Induction Heating) cooking heater after stopping the air conditioner. For this reason, a complicated work for setting the priority order may be required for each home.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to select a device according to a household life pattern and suppress power consumption of the device.

In order to achieve the above object, the demand control apparatus of the present invention provides:
A measuring means for measuring power consumption consumed by each of a plurality of devices;
Based on the transition of the power consumption measured by the measuring means, an estimation means for estimating the transition of the power consumption in the future of each of the plurality of devices;
Based on the transition of the power consumption in the future of each of the plurality of devices, a selection unit that selects a device to be controlled from the plurality of devices;
Control means for suppressing the output of the device selected by the selection means;
Is provided.

  According to the present invention, the transition of power consumption consumed by each of a plurality of devices in the future is estimated. And the output of the apparatus selected based on this estimated transition is suppressed. Thereby, a device can be selected according to a household life pattern, and the power consumption of this device can be suppressed.

It is a figure which shows the structure of the demand control apparatus which concerns on 1st Embodiment. It is a figure which shows the power consumption measured by a measurement part. It is a flowchart which shows the process performed by the calculating part. It is a figure which shows transition of the power consumption from 6:00 to 8:00. It is a figure which shows transition of the power consumption from 6:00 to 8:00. It is a figure which shows transition of the power consumption from 6:00 to 8:00. It is a figure which shows transition of the power consumption from 6:00 to 8:00. It is a flowchart which shows the selection process performed by the calculating part. It is a flowchart which shows the selection process which concerns on 2nd Embodiment. It is a figure which shows transition of the power consumption from 18:00 to 20:00.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
As shown in FIG. 1, the demand control device 10 according to the present embodiment is connected to wiring for supplying electric power from a commercial power source PS to an air conditioner 20a, a cooking device (IH cooking heater) 20c, and a water heater 20w. Yes. The demand control device 10 controls the power supplied to each device so that the sum of the power consumed by these three devices does not exceed a predetermined upper limit value. The predetermined upper limit is 2000 W, for example.

  The demand control device 10 includes a calculation unit 11, a main storage unit 12, an auxiliary storage unit 13, an input unit 14, an output unit 15, an interface unit 16, an internal bus 17, and a measurement unit 19. The main storage unit 12, the auxiliary storage unit 13, the input unit 14, the output unit 15, and the interface unit 16 are connected to the calculation unit 11 via the internal bus 17.

  The calculation unit 11 includes a CPU (Central Processing Unit) and the like. The calculation unit 11 executes processing described later according to the program 18 stored in the auxiliary storage unit 13.

  The main storage unit 12 includes a RAM (Random Access Memory) and the like. The main storage unit 12 stores a program loaded from the auxiliary storage unit 13. Further, the main storage unit 12 is used as a work area for the calculation unit 11.

  The auxiliary storage unit 13 includes a nonvolatile memory such as a magnetic disk or a flash memory. The auxiliary storage unit 13 stores a program 18 executed by the calculation unit 11 and various parameters used for executing the program 18. Further, the auxiliary storage unit 13 outputs data used by the program 18 to the calculation unit 11 in accordance with an instruction from the calculation unit 11, and stores the data output from the calculation unit 11. This data is, for example, data indicating the power consumed by each device in the past 30 days.

  The input unit 14 includes a pointing device, input keys, and the like. The input unit 14 receives an instruction input from a user of the demand control device 10 and notifies the calculation unit 11 via the internal bus 17. The instruction received by the input unit 14 is, for example, an instruction for changing various parameters stored in the auxiliary storage unit 13.

  The output unit 15 includes an LCD (Liquid Crystal Display), a speaker, and the like. For example, the output unit 15 presents the user with the status of the control executed by the demand control device 10.

  The interface unit 16 includes a LAN interface and the like. The interface unit 16 acquires power consumption data measured by the measurement unit 19 and outputs the data to the calculation unit 11. In addition, the interface unit 16 obtains an instruction for stopping each operating device or putting the device into an operation state with power saving from the computing unit 11, and notifies the device of this instruction.

  The measurement part 19 is installed in the distribution board, for example. The measuring unit 19 measures the power supplied from the commercial power source PS to each device, and sequentially notifies the interface unit 16 of the measurement results at regular intervals.

  The measurement result notified from the measurement unit 19 is, for example, time-series data illustrated in FIG. A line La shown in FIG. 2 indicates a transition of power consumption of the air conditioner 20a. Moreover, line Lw shows transition of the power consumption of the water heater 20w. A line Lc indicates a transition of power consumption of the cooking device 20c. A line Lt indicates the total power consumption of the three devices (hereinafter simply referred to as the total). Moreover, the solid line among the broken lines shown in FIG. 2 indicates data measured up to the time of 6 o'clock. On the other hand, the dotted line shows the transition of the power consumption estimated by the calculation unit 11 at 6 o'clock.

  Next, the operation of the demand control apparatus 10 having the above configuration will be described together with a specific example at 6:00 to 8:00 shown in FIG.

  First, as shown in FIG. 3, the calculation unit 11 calculates the total current power consumption (step S <b> 11). Specifically, the calculation unit 11 calculates the sum of the newest power consumption of each device measured by the measurement unit 19.

  Next, the computing unit 11 determines whether or not the calculated sum exceeds a threshold value (step S12). This threshold is 1700 W, for example. When it is determined that the calculated sum does not exceed the threshold (step S12; No), the arithmetic unit 11 returns the process to step S11. And the calculating part 11 repeats step S11, S12 until the sum total of power consumption exceeds a threshold value.

  For example, as shown in FIG. 4A, since the line Lt does not exceed the threshold from 6 o'clock to time T1, the calculation unit 11 repeats steps S11 and S12.

  When it is determined that the total power consumption exceeds the threshold (step S12; Yes), the calculation unit 11 executes a selection process to select one device from the three devices (step S13). When the selection process is executed twice or more, the calculation unit 11 selects one device from devices that have not been selected in the second and subsequent selection processes. Hereinafter, this selection process will be described with reference to FIG.

  First, the calculating part 11 estimates transition of the power consumption of each apparatus in time A1 from the present (step S21). For example, as illustrated in FIG. 4A, the calculation unit 11 estimates the transition of the power consumption of each device at time T1 until time T2 that is 15 minutes after time T1.

  This transition is estimated based on the power consumption of each device measured in the past 30 days. For example, in the past 30 days, the calculation unit 11 extracts a day in which the transition from 0:00 to time T1 is similar to the transition measured from the current time (from 0:00 to time T1). And the calculating part 11 estimates transition of the power consumption after the time T1 based on the assumption that power consumption changes similarly to the extracted day.

  Next, the computing unit 11 calculates the amount of power consumed by each device (hereinafter referred to as power consumption) based on the estimated transition (step S22). Specifically, the computing unit 11 calculates the amount of power consumption by integrating the power consumption of each device in the time A1 from the present over time. For example, the power consumption of the water heater 20w corresponds to the area of the hatched region in FIG. 4A.

  Next, the calculating part 11 determines whether there is only one apparatus with the minimum power consumption (step S23). That is, the calculation unit 11 determines whether there is a device that satisfies the condition that the calculated power consumption is smaller than any of the other two devices.

  When it is determined that there is not only one device with the smallest amount of power consumption (step S23; No), the calculation unit 11 extends the time A1 (step S24). Thereafter, the calculation unit 11 returns the process to step S21.

  When it is determined that there is only one device with the minimum power consumption (step S23; Yes), the calculation unit 11 selects a device with the minimum power consumption (step S25). Thereafter, the calculation unit 11 ends the selection process.

  For example, in the case shown in FIG. 4A, the power consumption of the water heater 20w is less than the power consumption of the air conditioner 20a and the cooking appliance 20c. For this reason, the calculating part 11 selects the water heater 20w.

  Returning to FIG. 3, the calculation unit 11 estimates the transition of the power consumption of each device when the power consumption of all the selected devices is suppressed (step S <b> 14).

  For example, the calculation unit 11 estimates the power consumption of each device when the power consumption of the selected water heater 20w is suppressed as illustrated in FIG. 4B. The water heater 20w is in a standby state at time T1. Moreover, the calculating part 11 transmits the signal for stopping the water heater 20w at time T1. Thereby, it is estimated that the power consumption of the water heater 20w decreases from time T1 to zero. Moreover, the calculating part 11 assumes transmitting the signal for starting the water heater 20w at the time T3. As shown in FIG. 4A, the time T3 is the time when the total power consumption becomes equal to or less than the threshold when the calculation unit 11 does not suppress the power consumption. Thereby, it is estimated that the power consumption of the water heater 20w increases to the power consumption in the standby state again from the time T3 as shown in FIG. 4B.

  Next, the calculating part 11 calculates the sum total of the estimated power consumption (step S15). Thereafter, the calculation unit 11 determines whether or not the calculated sum exceeds the upper limit value (step S16).

  When it is determined that the calculated sum exceeds the upper limit value (step S16; Yes), the calculation unit 11 returns to step S13 and further selects one device. And the calculating part 11 repeats step S13-S16 until it determines with the calculated sum total not exceeding an upper limit.

  For example, in the case illustrated in FIG. 4B, the line Lt exceeds the upper limit value, and thus the calculation unit 11 further selects one device. The re-selection process in the specific example and the processes in steps S14 to S16 will be described below.

  First, as shown in FIG. 4B, the calculation unit 11 estimates the power consumption of the air conditioner 20a and the cooking device 20c from time T1 to time T2 (step S21). Next, the calculating part 11 calculates the power consumption of the air conditioner 20a and the cooking appliance 20c (step S22). The power consumption of the air conditioner 20a is equivalent to the area of a rectangular area hatched with a downward slanting diagonal line in FIG. 4B. Moreover, the power consumption of the cooking device 20c corresponds to the area of the trapezoidal area hatched with a diagonal line rising to the right in FIG. 4B.

  Since the power consumption of the air conditioner 20a is equal to the power consumption of the cooking device 20c, the calculation unit 11 determines that there is not one device with the minimum power consumption (step S23; No). And the calculating part 11 extends time A1 to 30 minutes (step S24).

  As shown in FIG. 4C, the calculation unit 11 estimates transitions in power consumption of the air conditioner 20a and the cooking device 20c from time T1 to time T4, which is 30 minutes later (step S21). Next, the calculating part 11 calculates the power consumption of the air conditioner 20a and the cooking appliance 20c (step S22). For example, the power consumption of the air conditioner 20a corresponds to the area of the hatched area in FIG. 4C.

  Since the power consumption of the air conditioner 20a is smaller than the power consumption of the cooking device 20c, the calculation unit 11 determines that there is only one device with the minimum power consumption (step S23; Yes). Thereafter, the calculation unit 11 selects the air conditioner 20a (step S24).

  Returning to the processing shown in FIG. 3, the calculation unit 11 estimates the transition of the power consumption when the power consumption of the selected water heater 20w and the air conditioner 20a is suppressed as shown in FIG. 4D (step S14). . The selected air conditioner 20a is in an operating state at time T1. Moreover, the calculating part 11 transmits the signal for making the air conditioner 20a into a standby state at time T1. Further, it is assumed that the calculation unit 11 transmits a signal for operating the air conditioner 20a at time T3.

  Next, the calculating part 11 calculates the sum total of the estimated power consumption (step S15). Thereafter, the calculation unit 11 determines again whether or not the calculated sum exceeds the upper limit value (step S16).

  The process of steps S13 to S16 in the specific example has been described above. Next, processing after step S17 will be described.

  When it is determined that the sum calculated in step S16 does not exceed the upper limit value (step S16; No), the calculation unit 11 suppresses power consumption of all the selected devices (step S17). For example, in the case illustrated in FIG. 4D, the calculation unit 11 determines that the total power consumption does not exceed the upper limit value, and suppresses the power consumption of the water heater 20w and the air conditioner 20a. Specifically, the arithmetic unit 11 transmits a signal for stopping the water heater 20w to the water heater 20w, and transmits a signal for setting the air conditioner 20a to the standby state to the air conditioner 20a. Moreover, the calculating part 11 transmits the signal for starting the water heater 20w at time T3, and transmits the signal for operating the air conditioner 20a at time T3.

  Thereafter, the calculation unit 11 returns to step S11 and repeats the process.

  As described above, the demand control device 10 according to the present embodiment estimates the transition of the power consumption of each device in the future based on the power consumption measured by the measurement unit 19. The demand control device 10 selects a device based on the estimated transition, and suppresses power supplied to the selected device. Thereby, a device can be selected according to a household life pattern, and the power consumption of this device can be suppressed.

  Further, the demand control device 10 selects a device having the smallest calculated power consumption. In general, a device with low power consumption has a small work amount and a small influence on a resident. Therefore, the demand control apparatus 10 can automatically select a device that has little influence on the resident.

  In addition, the demand control device 10 notifies the selected device of an instruction for suppressing power consumption. Therefore, the device whose power consumption is suppressed is stopped or shifted to a standby state where it operates with power saving according to a predetermined sequence set in advance. As a result, the demand control device 10 can smoothly suppress power.

  In addition, when it is difficult to select one device, the demand control apparatus 10 executes the selection process again after extending the time A1 for calculating the power consumption amount. Thereby, the apparatus with little influence on a resident can be selected more reliably.

(Second Embodiment)
Next, the second embodiment will be described focusing on the differences from the first embodiment described above. In addition, about the structure same or equivalent to the said embodiment, while using an equivalent code | symbol, the description is abbreviate | omitted or simplified.

  The configuration of the demand control apparatus 10 according to the present embodiment is the same as that according to the first embodiment. The basic operation of the demand control apparatus 10 according to this embodiment is the same as that according to the first embodiment shown in FIG. Hereinafter, the selection process according to the present embodiment will be described with reference to the drawings together with a specific example from 18:00 to 20:00 shown in FIG.

  First, as illustrated in FIG. 6, the calculation unit 11 estimates a change in power consumption of each device at a time A1 from the current time (step S31). For example, as illustrated in FIG. 7, the calculation unit 11 estimates the transition of power consumption of each device at time T5 until time T6 that is 15 minutes after time T5.

  Next, the calculating part 11 calculates the difference of the power consumption of each apparatus (step S32). Specifically, the computing unit 11 calculates the difference between the power consumption at time T5 and the power consumption at time T6 for each device. For example, since the power consumption of the water heater 20w does not vary as shown in FIG. 7, the difference is zero. Moreover, the power consumption of the cooking appliance 20c is increasing, and the difference is + 330W. Moreover, the power consumption of the air conditioner 20a is decreasing, and the difference is -20W.

  Next, the computing unit 11 determines whether there is only one device with the smallest calculated difference (step S33). In other words, the calculation unit 11 determines whether there is a device that satisfies the condition that the calculated difference is smaller than any of the other two devices.

  When it is determined that there is not only one device with the smallest calculated difference (step S33; No), the calculation unit 11 extends the time A1 (step S34). Thereafter, the arithmetic unit 11 returns the process to step S31.

  When it is determined that there is only one device having the smallest calculated difference (step S33; Yes), the calculation unit 11 selects a device having the smallest difference (step S35). Thereafter, the calculation unit 11 ends the selection process.

  For example, in the case shown in FIG. 7, the difference (−20 W) of the air conditioner 20 a is smaller than the difference (0 W) of the hot water heater 20 w and the difference (+330 W) of the cooking appliance 20 c, so the calculation unit 11 selects the air conditioner 20 a. .

  As described above, the demand control apparatus 10 according to the present embodiment calculates a difference in power consumption of each device and selects a device having the smallest difference. Thereafter, the power of the selected device is suppressed. In general, a device that consumes less power has little impact on residents. Therefore, the demand control apparatus 10 can automatically select a device that has little influence on the resident.

  As mentioned above, although each embodiment of this invention was described, this invention is not limited by the said embodiment.

  For example, the demand control apparatus 10 according to the above embodiment selects a device based on the estimated power consumption. However, the present invention is not limited to this, and the demand control device 10 may select a device in consideration of the properties of the device.

  For example, the demand control device 10 may include a sensor that measures the room temperature of a room in which the air conditioner 20a is installed, and may preferentially select the air conditioner 20a when the set temperature of the air conditioner 20a is close to the room temperature. Further, when the set temperature of the air conditioner 20a is not close to the room temperature, the above selection process may be executed. Thereby, a demand can be controlled effectively, without making a resident uncomfortable.

  Further, the demand control apparatus 10 may select a device in consideration of the property of the device depending on the time zone. For example, in general, the water heater 20w boils hot water at midnight while keeping the hot water during the day, so that the power consumption during the day is small. Moreover, since the air conditioner 20a is generally used during the day when the temperature rises, the power consumption at night is small.

  Therefore, the demand control device 10 may preferentially select the water heater 20w during the day and preferentially select the air conditioner 20a at night. And even if the power consumption of the water heater 20w or the air conditioner 20a is suppressed, it is good also as a structure by which the above-mentioned selection process is performed when the sum total of power consumption exceeds an upper limit. Thereby, the demand can be controlled in consideration of the property of the device according to the time zone.

  For example, the calculation unit 11 according to the above embodiment has estimated the transition of power consumption relatively simply, but is not limited thereto. For example, the computing unit 11 may estimate the transition of power consumption using a statistical / stochastic method such as MAP (Maximum A Posteriori) estimation based on the power consumption measured in the past 30 days. For example, the calculation unit 11 may estimate the transition based on the average value of power consumption from 0:00 to time T1 for each of the past 30 days. Moreover, the calculating part 11 may estimate transition of power consumption using pattern recognition techniques, such as SVM (Support Vector Machine). Further, the transition of power consumption may be estimated using a template or transition model stored in advance in the auxiliary storage unit 13.

  For example, the calculation unit 11 according to the above-described embodiment estimates the power consumption of each device from the current time to the time after the time A1. However, the present invention is not limited to this. For example, the time that is the starting point for estimating the power consumption may be before or after the current time.

  For example, the calculation unit 11 according to the second embodiment selects a device based on the difference in power consumption, but is not limited thereto. For example, the computing unit 11 may select a device based on time-series data obtained by applying a filtering process such as weighting to the estimated transition of power consumption.

  For example, the calculation unit 11 according to the above embodiment starts the processes of steps S13 to S17 when the total power consumption exceeds a threshold, but is not limited thereto. For example, the calculation unit 11 may monitor increase / decrease in power consumption and start the processes of steps S13 to S17 when the increase in power consumption becomes equal to or greater than a reference value. Moreover, the calculating part 11 may monitor the accumulation value of power consumption, or its increase / decrease.

  For example, the calculation unit 11 according to the above embodiment has estimated the transition of power consumption, but is not limited thereto. For example, the computing unit 11 can execute the same processing as in the second embodiment by estimating only the instantaneous value of power consumption at time T6.

  For example, the demand control apparatus 10 according to the above embodiment sets the power consumption of three devices as a control target. However, the present invention is not limited to this, and the power consumption of two or four or more devices may be set as a control target.

  For example, the calculation unit 11 according to the first embodiment calculates the area of the hatched region in FIG. 4A. This area can be determined by various methods. For example, this area can be obtained by integrating a curve indicating the transition of power consumption. Alternatively, this area may be obtained by subtracting the accumulated power consumption value at time T1 from the accumulated power consumption value at time T2.

  For example, the calculation unit 11 according to the above-described embodiment executes demand control when the total power consumption exceeds a threshold value. However, when the demand signal for instructing demand control is received from the outside, the calculation unit 11 performs the demand control. You may control.

  The function of the demand control apparatus 10 according to the above-described embodiment can be realized by dedicated hardware or by a normal computer system.

  For example, the program 18 stored in the auxiliary storage unit 13 can be read by a computer such as a flexible disk, a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), and an MO (Magneto-Optical disk). By storing and distributing in a recording medium and installing the program 18 in a computer, an apparatus for executing the above-described processing can be configured.

  Further, the program 18 may be stored in a disk device or the like included in a predetermined server device on a communication network such as the Internet, and may be downloaded onto a computer by being superimposed on a carrier wave, for example.

  The above-described processing can also be achieved by starting and executing the program 18 while transferring it via the communication network.

  Further, the above-described processing can also be achieved by executing all or part of the program 18 on the server device and executing the program 18 while the computer transmits and receives information on the processing via the communication network. .

  Note that when the above functions are realized by sharing an OS (Operating System) or when the functions are realized by cooperation between the OS and an application, only the part other than the OS may be stored in a medium and distributed. It may also be downloaded to a computer.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. Further, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  The demand control apparatus, the demand control method, and the program according to the present invention are suitable for an apparatus for controlling power consumed by a plurality of devices.

DESCRIPTION OF SYMBOLS 10 Demand control apparatus 11 Calculation part 12 Main memory part 13 Auxiliary memory part 14 Input part 15 Output part 16 Interface part 17 Internal bus 18 Program 19 Measuring part 20a Air conditioner 20c Cooker 20w Water heater A1 Time La, Lc, Lt, Lw line PS Commercial power supply T1, T2, T3, T4, T5, T6 Time

Claims (9)

A measuring means for measuring power consumption consumed by each of a plurality of devices;
Based on the transition of the power consumption measured by the measuring means, an estimation means for estimating the transition of the power consumption in the future of each of the plurality of devices;
Based on the transition of the power consumption in the future of each of the plurality of devices, a selection unit that selects a device to be controlled from the plurality of devices;
Control means for suppressing the output of the device selected by the selection means;
A demand control device comprising: The selection means includes
From the transition of the power consumption estimated by the estimation means, the amount of power consumed from the first time to the second time in the future is calculated for each device, and the device with the smallest calculated power amount is selected. ,
The demand control apparatus according to claim 1. The selection means includes
By integrating a curve indicating the transition of the power consumption from the first time to the second time estimated by the estimation means, the amount of power consumed from the first time to the second time is obtained. Calculate and select the device with the smallest amount of power calculated,
The demand control apparatus according to claim 2. Storage means for storing information about the power consumption measured by the measurement means;
The inference means is
Inferring the transition of the power consumption from the first time to the second time in the future based on the power consumption measured from the first time to the second time in the past.
The demand control apparatus according to claim 2 or 3. The inference means is
Based on the average value of the power consumption measured a plurality of times from the first time to the second time in the past, the transition of the power consumption in the future is estimated,
The demand control apparatus according to claim 4. The control means includes
Suppressing the output of the device selected by the selection means when a demand signal for instructing execution of control is received;
The demand control apparatus according to any one of claims 1 to 5. The control means includes
Suppressing the output of the device selected by the selection means when the sum of the power consumption of each of the plurality of devices exceeds a threshold;
The demand control apparatus according to any one of claims 1 to 6. A measurement step for measuring power consumption consumed by each of a plurality of devices;
Based on the transition of the power consumption measured in the measurement step, an estimation step for estimating the transition of the power consumption in the future of each of the plurality of devices;
A selection step of selecting a device to be controlled from among the plurality of devices based on the transition of the power consumption in the future of each of the plurality of devices;
A control step of suppressing the output of the device selected in the selection step;
Including a demand control method. Computer
An acquisition means for acquiring a measurement result of power consumption consumed by each of a plurality of devices,
Based on the measurement result of the power consumption acquired by the acquisition unit, the estimation unit that estimates the transition of the power consumption in the future of each of the plurality of devices,
Selection means for selecting a device to be controlled from among the plurality of devices based on the transition of the power consumption in the future of each of the plurality of devices,
Control means for suppressing the output of the device selected by the selection means;
Program to function as.

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