JPWO2015045156A1 - Electric energy control device, electric energy control method, electric energy control system, and electric equipment control device - Google Patents

Abstract

[PROBLEMS] To increase the amount of power consumption reduction. An electric energy control apparatus for controlling an electric energy consumption of a plurality of electric devices in a facility, wherein the estimated value of electric power to be used is based on the electric power used in the facility within a predetermined period in the past. The assumed power calculation unit 121 that calculates the assumed power associated with the demand time limit, the reception unit 122 that receives the target reduction rate that is the target value of the reduction rate of the used power with respect to the assumed power, and the assumed power and the target reduction rate Based on the allowable power calculation unit 123 that calculates the allowable power that is allowed to be used for each demand time period, the acquisition unit 124 that acquires information indicating the power usage of a plurality of electrical devices, and the power usage acquired by the acquisition unit And a device control unit 125 that controls a plurality of electrical devices so that the power used in the demand time period is less than or equal to the allowable power. [Selection] Figure 2

Description

  The present invention relates to a power amount control device, a power amount control method, a power amount control system, and an electric device control device that control the amount of power used by an electric device.

  The basic charge of the power usage fee is determined based on the maximum power usage (hereinafter referred to as peak power) among the power usage for each demand period. In general, the demand time limit is often set to 15 minutes or 30 minutes.

  Conventionally, in order to reduce the basic charge, a power control method for reducing the peak power has been proposed. In the conventional power control method, by predicting the total power consumption of a plurality of electrical equipment installed in the facility, and changing the time for operating the electrical equipment when the total power consumption exceeds the target value, Peak power can be suppressed (see, for example, Patent Document 1).

JP 2008-236913 A

  FIG. 12 is a diagram showing an outline of a conventional power control method. The horizontal axis in FIG. 12 indicates the time during one day, and the vertical axis indicates the power used by the electrical equipment (hereinafter referred to as “used power”). When power control is not performed, the power used exceeds the target power between 12:00 and 14:00 in FIG. By controlling the time for operating the electrical equipment so that the power used between 12:00 and 14:00 is within the target power, the amount of power corresponding to the vertical line region shown in FIG. 12 can be reduced. As a result, it may be possible to reduce the basic charge as compared with the case where power control is not performed.

  However, according to the conventional power control method, even if the basic charge can be reduced, the reduction amount of the used power is limited to the amount of power exceeding the target power. Accordingly, there is a problem in that power may be consumed wastefully without reducing the amount of power that can be reduced, even though there is room to reduce more power.

  Therefore, the present invention has been made in view of these points, and an object thereof is to increase the amount of power consumption reduction.

  The power amount control device according to the first aspect of the present invention is a power amount control device that controls the power consumption amount of a plurality of electrical devices in a facility, and is based on the power consumption in the facility in a past predetermined period. An assumed power calculation unit that calculates an assumed power that is an assumed value of power to be used in association with a demand time period, and a reception unit that receives a target reduction rate that is a target value of the reduction rate of the used power with respect to the assumed power And an allowable power calculation unit that calculates allowable power that is allowed to be used for each demand time period based on the assumed power and the target reduction rate, and an acquisition unit that acquires information indicating the power used by the plurality of electrical devices And, based on the used power acquired by the acquiring unit, a device control unit that controls the plurality of electrical devices so that the used power in the demand time period is less than or equal to the allowable power. Obtain.

  The acquisition unit, for example, calculates a cumulative power usage that is a cumulative value of the power usage in the demand time period, and the device control unit sets the cumulative power usage at the time when the demand time period ends to be less than or equal to the allowable power. In order to do so, the plurality of electric devices are controlled.

  For example, the device control unit controls the number of electric devices to be operated among the plurality of electric devices based on the target reduction rate. The device control unit may control the number of electric devices to be operated among a plurality of electric devices in each of a plurality of groups constituting the plurality of electric devices based on the target reduction rate. The device control unit may switch an electric device to be operated among the plurality of electric devices at a predetermined time interval.

  The assumed power calculation unit, for example, calculates the assumed power for each demand time period in association with a plurality of the past predetermined periods, and the allowable power calculation unit corresponds to the past corresponding to a period including the current date. The allowable power is calculated based on the assumed power associated with the predetermined period.

  The electric energy control method according to the second aspect of the present invention is a method for controlling the electric energy used by a plurality of electrical devices in a facility, and is used based on the electric power used in the facility within a predetermined period in the past. Calculating an assumed power that is an assumed value of power to be used in association with a demand time period, receiving a setting of a target reduction rate that is a target value of the reduction rate of the used power with respect to the assumed power, and the assumed power And, based on the target reduction rate, acquired in the step of calculating the allowable power that is allowed to be used for each demand time period, the step of acquiring information indicating the power consumption of the plurality of electrical devices, and the step of acquiring And a device control stage for controlling the plurality of electrical devices so that the power used in the demand time limit is less than or equal to the allowable power based on the power used.

  An electric energy control system according to a third aspect of the present invention includes an electric device control device that controls a plurality of electric devices in a facility, and an electric energy control device that controls the amount of electric power used by the plurality of electric devices. It is an electric energy control system provided. The electrical device control device includes: a measurement unit that measures power usage used by the plurality of electrical devices; a communication unit that transmits the power usage measured by the measurement unit to the power amount control device; and the power amount control. A control unit that controls operations of the plurality of electric devices based on an instruction from the apparatus. The power amount control device is configured to calculate an assumed power, which is an assumed value of power to be used, in association with a demand time period based on power used in the facility within a predetermined period in the past, and the assumption Based on the assumed power and the target reduction rate, an accepting unit that accepts the setting of the target reduction rate that is the target value of the reduction rate of the used power with respect to power, and calculates the allowable power that is allowed to be used for each demand period. An allowable power calculation unit, an acquisition unit that acquires information indicating the used power of the plurality of electric devices, and the used power in the demand time period based on the used power acquired by the acquiring unit is less than or equal to the allowable power In order to do so, it has an appliance control unit that controls the electrical appliance control apparatus to control the plurality of electrical appliances.

  An electrical equipment control device according to a fourth aspect of the present invention is an electrical equipment control device that controls a plurality of electrical equipments in a facility, and a measuring unit that measures power used by the plurality of electrical equipments; The communication unit that transmits the power consumption measured by the measurement unit to the power amount control device according to any one of claims 1 to 5, and the plurality of electric powers based on an instruction from the power amount control device. A control unit that controls the operation of the device.

  According to the present invention, it is possible to increase the amount of power consumption reduction.

It is a figure which shows the structure of the electric energy control system which concerns on 1st Embodiment. It is a figure which shows the structure of an electric energy control apparatus. It is an example of an assumed power table. It is an example of an allowable power table. It is a figure which shows the mode of the fluctuation | variation of the electric power used in each demand time limit. It is a figure which shows the structure of an electric equipment control apparatus. It is a figure which shows the operation | movement sequence of the electric energy control system in each demand period. The assumed power (kW) in five demand time periods from 12:00 to 14:30 is shown. The allowable power (kW) in the five demand periods from 12:00 to 14:30 is shown. It is a figure which shows 1 day assumption electric power and permissible electric power. It is a figure which shows the plant | facility with ten electric equipments 3 in each of the area A and the area B. It is a figure which shows the outline | summary of the conventional power control method.

<First Embodiment>
[Basic configuration of electric energy control system S]
FIG. 1 is a diagram illustrating a configuration of an electric energy control system S according to the first embodiment. The power amount control system S includes a power amount control device 1 and an electric device control device 2. The electric energy control device 1 and the electric equipment control device 2 are connected to a network N such as a local area network or the Internet, and can transmit and receive data to and from each other.

  A plurality of electric devices 3 (electric device 3-1, electric device 3-2,..., Electric device 3-n, where n is an integer of 3 or more) are connected to electric device control apparatus 2. . The electric device 3 is, for example, an air conditioner or a lighting device. The plurality of electrical devices 3 are connected to the electrical device control device 2 by, for example, a power line, and can transmit and receive data to and from the electrical device control device 2 using the power line. The plurality of electrical devices 3 may be connected to the electrical device control apparatus 2 by other communication lines such as a local area network in addition to the power line.

  The electric energy control device 1 is, for example, a server. The electric energy control device 1 controls the electric energy used by a plurality of electric devices 3 in the facility via the electric device control device 2. A facility is an office, factory, store, or the like where the electrical equipment 3 is installed. The electrical device control device 2 measures the power used in the plurality of electrical devices 3 based on the control of the power amount control device 1 and sends a control command for controlling the operation of the plurality of electrical devices 3 to the plurality of electrical devices 3. Send.

[Configuration of Electric Power Control Device 1]
FIG. 2 is a diagram illustrating a configuration of the electric energy control device 1. The power amount control device 1 includes a storage unit 11, a control unit 12, and a communication unit 13.
The storage unit 11 includes a storage medium such as a hard disk, a ROM, and a RAM.

  The control part 12 is comprised by CPU which can perform a calculation process. The control unit 12 comprehensively controls each unit of the power amount control apparatus 1 by executing the power control program stored in the storage unit 11. The control unit 12 includes an assumed power calculation unit 121, a reception unit 122, an allowable power calculation unit 123, an acquisition unit 124, and a device control unit 125.

  The assumed power calculation unit 121 calculates the assumed power calculated based on the power used in the facility in the past predetermined period in association with the demand time limit. The assumed power calculation unit 121 receives, for example, information indicating past power consumption from another computer via the network N and the communication unit 13 and associates it with the past date or year / month in order to meet the daily demand. Calculate power consumption for each time period. The assumed power calculation unit 121 calculates the assumed power based on, for example, an average value of power used within a predetermined past period.

  The length of the demand period is determined by country. In the present embodiment, the length of the demand time period is described as being 30 minutes, but the length of the demand time period may be 15 minutes or may be other time. The assumed power calculation unit 121 generates an assumed power table in which the calculated assumed power and the demand time period are associated with each other, and stores them in the storage unit 11.

  FIG. 3 is an example of an assumed power table generated by the assumed power calculation unit 121. In FIG. 3, the average value of the power used in each demand time period in January 2013 is shown as the assumed power. In the example of FIG. 3, the assumed power of the demand time period from 14:00 to 14:30 shows the maximum value at 100.0 (kW). As described above, the assumed power calculation unit 121 calculates the assumed power for each demand period in association with a plurality of past predetermined periods (for example, one month), and stores the calculated power in the storage unit 11.

  The accepting unit 122 accepts a target reduction rate that is a target value for the reduction rate of the used power with respect to the assumed power. The accepting unit 122 may accept the target reduction rate input in another computer via the network N and the communication unit 13, and the target reduction rate input in the operation unit (not shown) of the power amount control device 1. May be accepted.

  The allowable power calculation unit 123 calculates the allowable power that is allowed to be used for each demand period based on the assumed power and the target reduction rate. For example, when the assumed power in the demand time period from 14:00 to 14:30 is 100.0 (kW) and the target reduction rate is 10%, the allowable power calculation unit 123 sets the allowable power to 90.0 (kW). And calculate.

  The allowable power calculation unit 123 calculates the allowable power based on the assumed power associated with the past predetermined period corresponding to the period including the current date. For example, if the current date is September 15, 2013, the allowable power calculation unit 123 calculates the average power used in each demand time period measured in September 2012. Based on the above, the allowable power is calculated. By doing in this way, the apparatus control part 125 determines allowable power based on the electric power used in the past similar climate period, reducing the data of the assumed electric power memorize | stored in the memory | storage part 11. be able to.

  The allowable power calculation unit 123 may calculate the allowable power, generate an allowable power table in which the demand time limit and the allowable power are associated, and store the allowable power table in the storage unit 11. FIG. 4 is an example of an allowable power table indicating the allowable power calculated by the allowable power calculation unit 123 for each demand time period.

  The acquisition unit 124 acquires information indicating the power usage of the plurality of electrical devices 3. Specifically, the acquisition unit 124 acquires information indicating the power usage of the plurality of electrical devices 3 measured by the electrical device control device 2 at predetermined time intervals from the electrical device control device 2. The acquisition unit 124 acquires information indicating the used power measured by the electric device control apparatus 2 at a time interval equal to or longer than the time interval at which the electric device control apparatus 2 measures the used power. The acquisition unit 124 acquires, for example, an average value for 1 minute of power used measured by the electric device control apparatus 2 every 10 seconds from the electric device control apparatus 2 every minute. The acquisition unit 124 may store the acquired used power in the storage unit 11 in association with the received time.

  Further, the acquisition unit 124 calculates a cumulative power consumption that is a cumulative value of power consumption in the demand time period every time a predetermined time has elapsed from the start timing of the demand time period. The acquisition unit 124 outputs the calculated accumulated power usage to the device control unit 125.

  The device control unit 125 controls the number of electric devices 3 to be operated among the plurality of electric devices 3 based on the target reduction rate. For example, when there are ten electric devices 3 and the reduction rate is 10%, the device control unit 125 controls the number of electric devices 3 that operate simultaneously among the ten electric devices 3 to be nine. At that time, the device control unit 125 switches the electric device 3 to be operated among the plurality of electric devices 3 at a predetermined time interval. By doing in this way, it can prevent that the influence by having turned off the electric equipment 3 arises only in the specific place in a facility, and can maintain the environment of the whole facility equally.

  In addition, the device control unit 125 controls the plurality of electric devices 3 so that the used power in the demand time period is equal to or less than the allowable power based on the information indicating the used power acquired by the acquiring unit 124. Specifically, the device control unit 125 acquires information indicating the power used from the acquisition unit 124 from the start timing of the demand time period based on the allowable power in the demand time period that is a target for controlling the plurality of electric devices 3. It is determined whether the accumulated power used up to the timing is within an appropriate range.

  More specifically, the device control unit 125 first, based on the permissible power in each demand time period, associates with the elapsed time from the start timing of each demand time period and allows the cumulative power usage allowed at the time of the elapsed time. Is calculated. The device control unit 125 compares the allowable value of the accumulated power consumption with the actual accumulated power calculated by the acquisition unit 124 for each predetermined elapsed time.

  The device control unit 125 determines the number of electric devices 3 to operate when the actual accumulated power consumption exceeds the allowable value of the accumulated power consumption so that the accumulated power consumption at the time when the demand time period ends is less than or equal to the allowable power. The plurality of electrical devices 3 are controlled so as to reduce The device control unit 125 controls the plurality of electric devices 3 so as to increase the number of electric devices 3 that operate when the actual accumulated power consumption is smaller than the allowable value of the accumulated power consumption by a predetermined value or more.

  FIG. 5 is a diagram illustrating a state of variation in power usage in each demand time period. The horizontal axis of FIG. 5 shows the elapsed time from the start timing of the demand time period, and the vertical axis shows the accumulated value of the power used from the start timing of the demand time period. FIG. 5 shows a case where the assumed power is 100 (kW) and the allowable power consumption is 90 (kW).

  A line segment A connecting the point where the accumulated power consumption at the end timing of the demand period reaches 90 (kW) and the origin indicates the allowable value of the accumulated power consumption at each timing within the demand period. When the actual accumulated power consumption exceeds the allowable value, the device control unit 125 performs control so as to reduce the number of operating electric devices 3, so that the accumulated power consumption at the midpoint of the demand period exceeds the allowable value. However, the accumulated power used at the end timing of the demand time limit is less than the allowable power.

  FIG. 6 is a diagram illustrating a configuration of the electric device control apparatus 2. The electric device control apparatus 2 includes a measurement unit 21, a communication unit 22, a control unit 23, and a storage unit 24. The storage unit 24 includes a ROM and a RAM.

  The measurement unit 21 measures the power used by the plurality of electrical devices 3. Specifically, the measurement unit 21 measures the power used by the plurality of electrical devices 3 by measuring currents flowing through the plurality of electrical devices 3 at predetermined time intervals. The measurement unit 21 stores the measured power usage in the storage unit 24 in association with the measured time.

  The communication unit 22 transmits the used power measured by the measurement unit 21 to the power amount control apparatus 1 via the network N. For example, the communication unit 22 transmits the used power every time the measuring unit 21 measures the used power. The communication unit 22 may transmit the used power at a time interval longer than the time interval at which the measuring unit 21 measures the used power.

  The control unit 23 controls the operation of the plurality of electrical devices 3 based on an instruction from the power amount control device 1. Specifically, when information specifying the electric device 3 to be operated is received from the power amount control device 1, the power source of the electric device 3 to be operated is turned on. If the information which specifies the electric equipment 3 which stops operation | movement is received from the electric energy control apparatus 1, the power supply of the electric equipment 3 to stop will be turned off. When the plurality of electrical devices 3 are connected to the electrical device control device 2 via one communication line or power line, the electrical device control device 2 specifies the address information for identifying each electrical device 3 and the address information. The control packet including the control information instructing power on / off associated with is transmitted to the plurality of electrical devices 3.

[Operation sequence]
FIG. 7 is a diagram showing an operation sequence of the electric energy control system S in each demand time period.
First, the power amount control device 1 initializes the accumulated power consumption at the start timing of the demand time limit. Next, the electrical device control apparatus 2 measures the power consumption of the plurality of electrical devices 3 (S2), and when the time to transmit the power usage comes (S3), information indicating the measured power consumption is transmitted to the power amount control device. 1 (S4).

  When receiving the information indicating the used power, the power amount control device 1 calculates the accumulated used power from the start timing of the demand time limit (S5). When the accumulated power usage exceeds the target value (S6), the power amount control device 1 transmits an instruction for controlling the operation of the electrical device 3 to the electrical device control device 2 (S7).

  The electric equipment control device 2 generates a control packet in response to an instruction from the electric energy control device 1 (S8), and transmits the generated control packet to the electric equipment 3 (S9). The electrical device 3 that has received the control packet turns the power on or off based on the control packet. Thereafter, the electric energy control system S repeats S2 to S7 within the demand time period. When one demand time period ends, the power amount control system S repeats the processes from S1 to S7 in the next demand time period.

[Reduced power consumption]
FIG. 8 shows the assumed power (kW) in five demand periods from 12:00 to 14:30. FIG. 9 shows the allowable power (kW) in the same demand time period. The allowable power is set to 10% of the assumed power. The amount of power in the area indicated by the oblique lines in FIG. 9 is reduced.

  FIG. 10 is a diagram illustrating one-day assumed power and allowable power. The area of the region indicated by the vertical line in FIG. 10 corresponds to the amount of power to be reduced. Compared with FIG. 12, it can be seen that the amount of power to be reduced is much larger.

  As described above, according to the present embodiment, the electric energy control device 1 uses the estimated power calculated by calculating the average value of the power used in each demand period of the day, which has been used in the facility within the past predetermined period, as the demand. An allowable power that is stored in association with the time period and allowed to be used for each demand time period is calculated based on the assumed power and the target reduction rate. And the electric energy control apparatus 1 controls the operation | movement of the electric equipment 3 so that the actual electric power used may become below permissible power for every demand time period, The electric power equivalent to a target reduction rate in each demand time period Can be reduced. As a result, the amount of power that can be reduced in a day can be made much greater than in conventional methods.

<Second Embodiment>
In the above embodiment, the assumed power calculation unit 121 calculates the assumed power in association with the past date, but may calculate the assumed power in association with other information. For example, the assumed power calculation unit 121 may calculate a plurality of different assumed powers in association with environmental conditions such as weather, temperature, or humidity.

  The allowable power calculation unit 123 calculates the allowable power based on the assumed power calculated in association with the environmental condition similar to the environmental condition on the day on which power control is performed. For example, on a very hot day, the allowable power is calculated based on the assumed power calculated based on the power used on the past extremely hot day and the target reduction rate received by the receiving unit 122.

  The permissible power calculation unit 123 limits the number of times each of a plurality of different assumed powers that can be used in the permissible power calculation based on the environmental conditions in the past predetermined period including the day on which power control is performed. May be. Specifically, the allowable power calculation unit 123 calculates the usage power in the past predetermined period so that the reduction rate of the allowable usage power with respect to the average value of the used power in the past predetermined period is larger than the target reduction rate. The number of days on which the assumed power larger than the average value can be applied is limited to the number of days that was the environmental condition corresponding to the assumed power in the past predetermined period.

  For example, in August one year ago, the allowable power calculation unit 123 has 10 days on a fine day when the temperature is equal to or higher than the first threshold, and a cloudy day when the temperature is equal to or higher than the second threshold and lower than the first threshold. Are 10 days, and there are 10 rainy days when the temperature is below the second threshold. In this case, the assumed power calculation unit 121 calculates a first assumed power corresponding to a clear day, a second assumed power corresponding to a cloudy day, and a third assumed power corresponding to a rainy day, and an allowable power calculation unit The first assumed power that 123 can use for calculating the allowable power is limited to a maximum of 10 days.

  That is, the assumed power calculation unit 121 can calculate the allowable power based on the first assumed power on the first 10 sunny days in August, but when the sunny day is 11 days or more, On a sunny day from the 11th day, the allowable power is calculated based on the second assumed power. In this way, it is possible to achieve the target reduction rate even when there is a difference between the same time in the past and the weather while increasing or decreasing the allowable power according to the weather.

  As described above, in the present embodiment, the assumed power calculation unit 121 calculates a plurality of different assumed powers in association with environmental conditions such as weather, temperature, or humidity, and the allowable power calculation unit 123 calculates the allowable power. The allowable power is calculated using the assumed power corresponding to the environmental condition of the day to be calculated. By doing in this way, it can prevent that the environment in a facility deteriorates, for example, increasing the number of the air-conditioning equipment which stops operation | movement on the day with high temperature.

<Third Embodiment>
In 1st Embodiment, the apparatus control part 125 demonstrated as what controls the number of the electric devices 3 operated simultaneously among the several electric devices 3 based on a target reduction rate. The device control unit 125 may control the number of electric devices 3 to be operated among the plurality of electric devices 3 in each of the plurality of groups constituting the plurality of electric devices 3 based on the target reduction rate. That is, the device control unit 125 may divide the plurality of electric devices 3 into a plurality of groups and control the number of electric devices 3 to be simultaneously operated among the plurality of electric devices 3 for each group.

  FIG. 11 is a diagram showing a facility where there are ten electric devices 3 in each of area A and area B. FIG. In FIG. 11, A1 to A10 indicate the electric device 3 in the area A, and B1 to B10 indicate the electric device 3 in the area B. When the target reduction rate is 10%, the device control unit 125 simultaneously operates nine of the ten electric devices 3 in the area A, and nine of the ten electric devices 3 in the area B. Operate simultaneously.

  The device control unit 125 synchronizes and switches the electric devices 3 to be operated in each of the plurality of areas at predetermined time intervals. For example, the device control unit 125 is in an on state at the start time of the demand time period, but after one minute has elapsed from the start of the demand time period, if the allowable power is lower than the actual accumulated accumulated power, A1 and B1 When 4 minutes have elapsed from the start of the demand time period, A1 and B1 are turned on, and A2 and B2 are turned off.

  The device control unit 125 selects the electrical device 3 to be turned off in the plurality of areas so that the plurality of electrical devices 3 at the closest distance are not turned off at the same time among the electrical devices 3 in the plurality of areas. By doing in this way, it can prevent that the environment in a some area becomes non-uniform | heterogenous.

<Fourth Embodiment>
In the above embodiment, the device control unit 125 controls the number of electric devices 3 to be operated according to the target reduction rate in all demand time periods, but operates without following the target reduction rate in a predetermined demand time period. The number of electrical devices 3 may be controlled. For example, on the day when the temperature is higher than a predetermined value, the device control unit 125 operates all the electric devices 3 for a predetermined time from the working time, and is determined based on the target reduction rate after the predetermined time has elapsed. A number of electrical devices 3 may be operated.

  In this case, the device control unit 125 operates a smaller number of electrical devices 3 than the number calculated based on the target reduction rate at a time other than the time when all the electrical devices 3 are operated. By doing in this way, for example, the equipment control unit 125 can quickly cool the facility in the morning on a hot day, and can make the daily power consumption reduction rate equal to or higher than the target reduction rate.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electric energy control apparatus 2 Electric equipment control apparatus 3 Electric equipment 11 Storage part 12 Control part 13 Communication part 21 Measurement part 22 Communication part 23 Control part 24 Storage part 121 Assumed power calculation part 122 Reception part 123 Allowable power calculation part 124 Acquisition part 125 Equipment control unit N Network S Electric energy control system

Claims (9)

An electric energy control device for controlling the electric energy used by a plurality of electric devices in a facility,
An assumed power calculation unit that calculates an assumed power that is an assumed value of power to be used in association with a demand time period based on the power used in the facility in a past predetermined period;
A reception unit that receives a target reduction rate that is a target value of the reduction rate of the used power with respect to the assumed power;
Based on the assumed power and the target reduction rate, an allowable power calculation unit that calculates an allowable power that is allowed to be used for each demand time period;
An acquisition unit for acquiring information indicating power used by the plurality of electrical devices;
Based on the power usage acquired by the acquisition unit, a device control unit that controls the plurality of electrical devices to reduce the power usage in the demand time period to the allowable power or less,
An electric energy control device comprising: The acquisition unit calculates a cumulative power usage that is a cumulative value of the power usage in the demand time period,
The device control unit controls the plurality of electric devices so that the cumulative power consumption at the time when the demand time period ends is equal to or less than the allowable power.
The electric energy control apparatus according to claim 1. The device control unit controls the number of electric devices to be operated among the plurality of electric devices based on the target reduction rate.
The electric energy control apparatus according to claim 1 or 2. The device control unit controls the number of electric devices to be operated among a plurality of electric devices in each of a plurality of groups constituting the plurality of electric devices based on the target reduction rate.
The electric energy control apparatus according to claim 3. The device control unit switches an electric device to be operated among the plurality of electric devices at a predetermined time interval.
The electric energy control apparatus according to claim 3 or 4. The assumed power calculation unit calculates the assumed power for each demand period in association with a plurality of the past predetermined periods,
The allowable power calculation unit calculates the allowable power based on the assumed power associated with the past predetermined period corresponding to a period including the current date.
The electric energy control apparatus according to any one of claims 1 to 5. A method for controlling power consumption of a plurality of electrical devices in a facility,
Calculating an assumed power, which is an assumed value of power to be used, in association with a demand time period based on the power used at the facility in a past predetermined period;
Receiving a setting of a target reduction rate that is a target value of the reduction rate of the used power with respect to the assumed power;
Calculating an allowable power that is allowed to be used for each demand time period based on the assumed power and the target reduction rate;
Obtaining information indicating power used by the plurality of electrical devices;
A device control step for controlling the plurality of electrical devices to make the used power in the demand time limit equal to or less than the allowable power based on the used power obtained in the obtaining step;
An electric energy control method comprising: An electric energy control system comprising: an electric device control device that controls a plurality of electric devices in a facility; and an electric energy control device that controls the amount of electric power used by the plurality of electric devices,
The electrical equipment control device
A measuring unit for measuring power used by the plurality of electrical devices;
A communication unit that transmits the power consumption measured by the measurement unit to the power amount control device;
A control unit that controls operations of the plurality of electrical devices based on an instruction from the power amount control device;
Have
The electric energy control device includes:
An assumed power calculation unit that calculates an assumed power that is an assumed value of power to be used in association with a demand time period based on the power used in the facility in a past predetermined period;
A reception unit that receives a setting of a target reduction rate that is a target value of the reduction rate of the used power with respect to the assumed power;
Based on the assumed power and the target reduction rate, an allowable power calculation unit that calculates an allowable power that is allowed to be used for each demand time period;
An acquisition unit for acquiring information indicating power used by the plurality of electrical devices;
Based on the power usage acquired by the acquisition unit, a device control unit that causes the electrical device control device to control the plurality of electrical devices so that the power usage in the demand time limit is less than or equal to the allowable power;
An electric energy control system. An electrical equipment control device that controls a plurality of electrical equipment in a facility,
A measuring unit for measuring power used by the plurality of electrical devices;
A communication unit that transmits the used power measured by the measurement unit to the power amount control device according to any one of claims 1 to 5,
A control unit that controls operations of the plurality of electrical devices based on an instruction from the power amount control device;
An electrical equipment control device.