JP2019033643A - Controller, control method and control program - Google Patents

Abstract

To determine whether or not an actual value of electric energy is correct.SOLUTION: The controller includes: an acquisition part, a calculation part and a processing part. The acquisition part acquires time information showing the time of an object apparatus which is an acquisition target of consumed power energy. The calculation part calculates an error between a reference time and the time. The processing part executes processing on the basis of the error calculated by the calculation part.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to a control device, a control method, and a control program.

  In recent years, with the liberalization of the electric power market, a control method called VPP (Virtual Power Plant) has been proposed. In such a VPP technology, a management system called an aggregator uses a distributed power source such as photovoltaic power generation, storage battery, fuel cell, EV (Electric Vehicle), etc. via an EMS (Energy Management System) controller installed in each facility. Power is supplied to other facilities by comprehensively controlling various energy-saving devices.

International Publication No. 2011/064865

  Here, the aggregator may receive the actual value of the electric energy during the period when the various energy devices are controlled from the EMS controller, and may predict the future demand electric energy based on the actual value. Moreover, the aspect which calculates the incentive etc. which pay to a contractor etc. based on such a performance value can be considered. However, with the conventional technology, there is a possibility that it cannot be determined whether or not the actual value of the amount of power acquired by the EMS controller from the smart meter or the energy device is a correct value.

  The control device according to the embodiment includes an acquisition unit, a calculation unit, and a processing unit. The said acquisition part acquires the time information which shows the time of the object apparatus by which electric energy is controlled. The calculation unit calculates an error between a reference time and the time based on the time information acquired by the acquisition unit. The processing unit performs processing based on the error calculated by the calculation unit.

  According to the present invention, it can be expected to provide a control device, a control method, and a control program capable of determining whether or not the actual value of the electric energy is a correct value.

FIG. 1 is a diagram illustrating a configuration example of a communication system according to an embodiment. FIG. 2 is a diagram illustrating an example of the configuration of the HEMS controller according to the embodiment. FIG. 3 is an explanatory diagram of power information according to the embodiment. FIG. 4 is a sequence diagram illustrating an example of an error calculation process of the calculation unit according to the embodiment. FIG. 5 is a sequence diagram illustrating an example of an operation in the communication system according to the embodiment.

  The (H) EMS controller 44 (an example of a control device) according to an embodiment described below includes an acquisition unit 31, a calculation unit 32, and a processing unit 33. The acquisition unit 31 acquires time information indicating the time of the target device 16 that is the acquisition target of the consumed electric energy. Here, the EMS controller will be described for home EMS (hereinafter referred to as HEMS) for home use. The calculation unit 32 calculates an error between the reference time and the time based on the time information acquired by the acquisition unit 31. The processing unit 33 performs processing based on the error calculated by the calculation unit 32.

  The HEMS controller 44 according to the embodiment described below includes a device control unit 34. The device control unit 34 receives a power amount control instruction, and controls the target device 16 based on the control instruction. The acquisition unit 31 acquires the actual value of the electric energy during the period controlled by the device control unit 34. The processing unit 33 outputs the power information 40a in which an error is associated with the actual value to the outside.

  The acquisition unit 31 according to the embodiment described below acquires the integrated value of the electric energy during the period controlled by the device control unit 34 as the actual value.

  The processing unit 33 according to the embodiment described below instructs the acquisition unit 31 to change the timing for acquiring the actual value from the target device 16 based on the error.

  The calculation unit 32 according to the embodiment described below calculates a time error with respect to the reference time. When the error is a negative value, the processing unit 33 instructs to delay the timing by the error time.

  When the error is equal to or greater than a predetermined threshold, the processing unit 33 according to the embodiment described below notifies the user having the target device 16 of information indicating the content corresponding to the error.

  Hereinafter, a control device, a control method, and a control program according to embodiments will be described with reference to the drawings. In the embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted.

(Embodiment)
First, the communication system according to the embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating a configuration example of a communication system 1 according to the embodiment. As shown in FIG. 1, a communication system 1 according to an embodiment includes an electric power company server device 41 (hereinafter, electric power company 41), an aggregator server device 42 (hereinafter, an aggregator 42), and an EMS (Energy Management System). A cloud 43, a HEMS controller 44, and a smart meter (power meter) 45 are provided.

  The electric power company 41 is a server device used by a business operator that supplies power to each contractor's home H via the system power supply 11, that is, a power business operator, and is realized by, for example, a server device or a cloud system. The electric power company 41 may be an electric power company that owns a power generation facility or a substation facility, or may be a power transmission company.

  In addition, the electric power company 41 uses a smart meter for various purposes such as measurement of electric energy by a contractor's smart meter 45, stop and return of energization, and time synchronization via a dedicated network (commonly referred to as A route). 45 is remotely operated.

  The aggregator 42 mediates between the power company 41 and the contractor, instructs the EMS cloud 43 in response to a request from the power company 41, and controls the target device 16 in an integrated manner, thereby being called VPP. Realize control.

  For example, the aggregator 42 instructs the EMS cloud 43 to control the amount of power (so-called commit amount) based on a request from the power company 41. And the aggregator 42 calculates the incentive paid to each contractor, for example based on the commit amount of each contractor's house H supplied with respect to the control instruction. Moreover, the aggregator 42 synchronizes with a time synchronization server using NTP of the internet, for example.

  The EMS cloud 43 collects data on the amount of power acquired from the contractor's HEMS controller 44. For example, the EMS cloud 43 provides a contractor with a graph (visualization) of power consumption and a remote control function of the target device 16 and the like. Further, the EMS cloud 43 has a function of committing surplus power for each contractor to the aggregator 42 at once.

  In addition, when the EMS cloud 43 receives an instruction of the commit amount (power amount) from the aggregator 42, the EMS cloud 43 should commit for each house in consideration of the surplus power amount of the target device 16 in each contractor's house H and the current state. Specify the commit amount.

  The HEMS controller 44 instructs each target device based on the commit amount instructed from the EMS cloud 43, and controls the target device so as to satisfy the commit amount instructed as the entire contractor's house H. When the HEMS controller 44 has a function corresponding to a commit amount instruction with the aggregator 42 included in the EMS cloud 43, the EMS cloud 43 can be omitted.

  The target devices are devices for which the amount of consumed power is acquired, and include, for example, the distributed power supply 160, the devices 161 to 164, the residential distribution board 12 and the distributed power distribution board 13 shown in FIG. In the following, these may be collectively referred to as the target device 16.

  The distributed power supply 160 is, for example, a storage battery or a fuel cell that is charged by power supplied from the system power supply 11 or power generated from the solar panel 21 via the power conditioner 22, EV (Electric Vehicle). Etc.

  The devices 161 to 164 are load devices that consume power. Devices 161 to 164 include, for example, refrigerators, washing machines, televisions, and the like that are used on a daily basis, so-called home appliances, and air-conditioning devices that have seasonality used depending on the season, climatic conditions, and the like. .

  The residential distribution board 12 and the distributed power distribution board 13 are smart distribution boards capable of branching the power from the system power supply 11 to the wiring of the contractor's house H and measuring the power consumption at each branch. . Depending on the product form, there are cases where the residential distribution board 12 and the distributed power distribution board 13 are housed in the same casing.

  Each of the target devices 16 can specify the time by a timekeeping function (for example, timekeeping using the vibration of the crystalline lens) and transmit the time to the HEMS controller 44. Further, the time of the target device 16 may be set manually, for example, or may be set by an instruction from the HEMS controller 44.

  The target device 16 is not limited to the above example, and any target device 16 can be used as long as the reference time of the HEMS controller 44 and the time of the target device 16 may be different. is there.

  In addition, the target device 16 may be any device other than the above-described devices as long as the target device 16 is a target device from which the consumed electric energy is acquired. Alternatively, the target device 16 may be any device that can be controlled by the HEMS controller 44 according to an instruction from the aggregator 42, for example.

  Further, the HEMS controller 44 adjusts the control of the target device 16 according to the monitored power amount while monitoring the power amount of the smart meter 45 during the instruction period to be committed. Further, the HEMS controller 44 acquires the actual value of the commit amount (power amount) from the smart meter 45 or the target device 16 and notifies the aggregator 42 via the EMS cloud 43 when the specified period to be committed has elapsed. Moreover, the HEMS controller 44 synchronizes with a time synchronization server using NTP of the internet, for example. On the other hand, the smart meter 45 manages time synchronization via a dedicated network that is independently prepared by the power company 41. That is, the HEMS controller 44 may not synchronize with the aggregator 42 because the time is synchronized with the smart meter 45 because the time synchronization is different.

  The smart meter 45 measures the power supplied from the system power supply 11, that is, the purchased power, and the power supplied to the system power supply 11 side, that is, the sold power. In addition, the smart meter 45 uses a communication protocol called ECHONET Lite on a predetermined transmission medium connected to the HEMS controller 44 owned by the contractor to the HEMS controller 44 to transmit the total amount of power of the contractor's home H. The actual value is transmitted (commonly called B route). As such a traditional medium, for example, 920 MHz band radio or PLC (Power Line Communication) can be used.

  Here, the actual value of the power amount (commit amount) acquired by the HEMS controller 44 from the smart meter 45 or the target device 16 may not be a correct value. Specifically, when the time is not synchronized with the smart meter 45 or the target device 16, the HEMS controller 44 may acquire the actual value of the power amount during a period that is different from the period required by the HEMS controller 44. is there.

  The situation where the time cannot be synchronized includes, for example, the difference in accuracy of the timekeeping function due to the difference in clock accuracy and synchronization frequency between the HEMS controller 44 and the target device 16, the aging deterioration of the timekeeping function, the high voltage around the contractor's house H There is an influence of an electromagnetic field applied from the outside such as an electric wire.

  For example, it is assumed that the time of the HEMS controller 44 is 12:00 and the time of the target device 16 is 11:55. Under such conditions, when the HEMS controller 44 requests the target device 16 for the actual value of the electric energy from 11:30 to 12:00, the time of the target device 16 is not 12:00, so that The actual value of the amount of power from 11 o'clock to 11:30, which is the above section, is transmitted to the HEMS controller 44.

  However, if the HEMS controller 44 receives the actual value of the electric energy from the target device 16, the received actual value from 11:00 to 11:30 is processed as the actual value from 11:30 to 12:00. was there. That is, it has not been possible to determine whether or not the actual amount of power is the correct value on the HEMS controller 44 side.

  For example, when the HEMS controller 44 transmits an actual value in a time zone different from the designated time zone to the aggregator 42, the accuracy of estimation of the demand power amount by the aggregator 42 deteriorates, and the actual power consumption amount and the power from the aggregator 42 There may be a difference between the amount of power demand notified to the company 41 and a penalty for the aggregator 42 may occur.

  Therefore, the HEMS controller 44 according to the embodiment calculates an error in time with the target device 16. Specifically, the HEMS controller 44 according to the embodiment uses the time of its own device as a reference time, and calculates an error between the reference time and the time of the target device 16.

  That is, the HEMS controller 44 according to the embodiment can determine whether or not the period of the actual value is correct by calculating the time error when acquiring the actual value of the electric energy. That is, it is possible to determine whether or not the actual amount of power is the correct value on the HEMS controller 44 side.

  Further, the HEMS controller 44 notifies the aggregator 42 of the time error together with the actual value. That is, the HEMS controller 44 transmits time error information and the actual amount of power to the aggregator 42. Thereby, for example, it is possible to prevent the estimation accuracy of the demand power amount from deteriorating by recalculating the actual measurement value in consideration of the time error on the aggregator 42 side.

  Moreover, although the HEMS controller 44 can change the timing which acquires the performance value of electric energy from the object apparatus 16 based on the error information of time, an example of this point is mentioned later.

  Moreover, the HEMS controller 44 may correct | amend the performance value of electric energy based on the information of the error of time, and may notify it to the aggregator 42. FIG. In addition to the above, the HEMS controller 44 can apply any process as long as it is a power amount notification based on the time error.

  Next, the configuration of the HEMS controller 44 according to the embodiment will be described with reference to FIG. FIG. 2 is a diagram illustrating an example of the configuration of the HEMS controller 44 according to the embodiment. As shown in FIG. 2, the HEMS controller 44 includes a communication unit 20, a control unit 30, and a storage unit 40.

  The communication unit 20 is a network device for performing wireless communication processing and wired communication processing. Specifically, the communication unit 20 transmits / receives various types of information to / from the aggregator 42 illustrated in FIG. 1 through wireless communication. For example, the communication unit 20 receives a VPP instruction from the aggregator 42 via the EMS cloud 43.

  The storage unit 40 is realized by, for example, a semiconductor memory device such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk. The storage unit 40 stores power information 40a.

  The power information 40 a includes various information collected from the smart meter 45 and the target device 16. Here, the power information 40a will be described with reference to FIG. FIG. 3 is an explanatory diagram of the power information 40a according to the embodiment.

  As illustrated in FIG. 3, the power information 40 a includes items such as “device ID”, “type”, “power amount acquisition time”, “time error assumed value”, and “power amount (Wh)”. “Device ID” is identification information for identifying the smart meter 45 and the target device 16. “Type” is information indicating the types of the smart meter 45 and the target device 16. The “power amount acquisition time” indicates the time when the actual value of the power amount is acquired from the smart meter 45 and the target device 16. The “time error assumption value” indicates an error between the reference time of the HEMS controller 44 and the time of the smart meter 45 and the target device 16. “Electric energy (Wh)” indicates an actual measurement value of electric energy.

  Returning to FIG. 2, the control unit 30 includes an acquisition unit 31, a calculation unit 32, a processing unit 33, and a device control unit 34. The control unit 30 is, for example, an electronic circuit such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array), and the HEMS controller 44. Execute overall control.

  The acquisition unit 31 acquires various types of information from the smart meter 45 and the target device 16 based on instructions from the aggregator 42. For example, the acquisition unit 31 acquires time information indicating the time of the target device 16 that is an acquisition target of the consumed electric energy.

  Moreover, the acquisition part 31 acquires the performance value of the electric energy in the period controlled by the apparatus control part 34 mentioned later. For example, the acquisition part 31 acquires the integrated value (for example, every 30 minutes) of electric energy as a performance value from distributed power supplies, such as a storage battery and a fuel cell. Further, for example, the acquisition unit 31 acquires an instantaneous value of the electric energy as a performance value from a load device such as an air conditioner or a lighting device.

  The calculation unit 32 calculates an error between the reference time and the time of the target device 16 based on the time information acquired by the acquisition unit 31. The reference time is the time of the HEMS controller 44, for example, the time synchronized with the Internet NTP. Here, an error calculation method by the calculation unit 32 will be described with reference to FIG.

  FIG. 4 is a sequence diagram illustrating an example of an error calculation process of the calculation unit 32 according to the embodiment. In FIG. 4, the case where the error between the HEMS controller 44 and the target device 16 is calculated will be described as an example, but the error between the HEMS controller 44 and the smart meter 45 can be calculated in the same manner. In FIG. 4, it is assumed that the transmission and reception times between the HEMS controller 44 and the target device 16 are equal.

  In FIG. 4, it is assumed that the time of the target device 16 is advanced by, for example, 5 seconds with respect to the reference time of the HEMS controller 44. That is, 0 to 4 seconds of the HEMS controller 44 corresponds to 5 to 9 seconds of the target device 16.

  In such a case, first, the HEMS controller 44 transmits a time acquisition instruction to the target device 16 (step S1). This is time T1. Subsequently, the target device 16 receives a time acquisition instruction at time T2 one second after time T1 (step S2).

  Subsequently, the target device 16 acquires the time property value of the target device 16 itself at time T3 one second after time T2 (step S3). Subsequently, the target device 16 transmits the acquired time property value to the HEMS controller 44 at time T4 one second after time T3 (step S4). The HEMS controller 44 receives the time property value at time T5, which is one second after time T4 (step S5).

  Under such conditions, when the error is x, the calculation unit 32 can be expressed by the following expression. That is, x = (T2 + T4) / 2− (T1 + T5) / 2 = T3− (T1 + T5) / 2. That is, the calculation unit 32 calculates the time error of the target device 16 with respect to the reference time.

  For example, when x is a positive value, the target device 16 is advanced by x with respect to the HEMS controller 44, and when it is negative, the target device 16 is delayed by x with respect to the HEMS controller 44. In the example shown in FIG. 4, the error x is 5 seconds (positive value). Thus, by simplifying the model, the time error can be easily calculated in seconds.

  Returning to FIG. 2, the processing unit 33 will be described. The processing unit 33 performs processing based on the error calculated by the calculation unit 32. For example, the processing unit 33 outputs the power information 40a in which an error is associated with the actual value acquired by the acquisition unit 31 to the outside (the aggregator 42 or the EMS cloud 43).

  Further, based on the error calculated by the calculation unit 32, the processing unit 33 instructs the acquisition unit 31 to change the timing for acquiring the actual value. For example, when the calculated error is a negative value, the processing unit 33 delays the timing by the error time.

  For example, it is assumed that the reference time of the HEMS controller 44 is 12:00 and the time of the target device 16 is 11:55. In such a case, if the HEMS controller 44 tries to obtain a 30 minute actual value from 11:30 to 12:00 at 12:00, the time of the target device 16 has not yet reached 12:00, so one The actual value from 11 o'clock to 11:30, which is the previous section, will be sent to the HEMS controller 44.

  Therefore, the HEMS controller 44 refers to the calculated error minus 5 minutes, and delays the timing for acquiring the actual value from the target device 16 by 5 minutes. In other words, the HEMS controller 44 requests the actual value from the target device 16 at 12: 5. Thereby, since the time of the target device 16 also reaches 12:00, the actual value from 11:30 to 12:00 is transmitted to the HEMS controller 44. That is, an error in the amount of power of the power information 40a transmitted to the aggregator 42 can be minimized.

  Thus, by adjusting the timing at which the HEMS controller 44 acquires the actual value in accordance with the error, it is possible to prevent the actual value of the previous section from being erroneously acquired.

  If the error calculated by the calculation unit 32 is a positive value, the processing unit 33 does not transmit the actual value of the previous section, and therefore does not change the acquisition timing. Also good.

  In addition, when the calculated error is equal to or greater than a predetermined threshold, the processing unit 33 notifies the user (that is, the contractor) having the target device 16 of information indicating the content according to the error. Thereby, the contractor can grasp the cause of the situation such as, for example, the incentive is not paid from the aggregator 42 because the error is relatively large. Further, the processing unit 33 may detect a failure of the clock function of the target device 16 when the error is equal to or greater than a predetermined threshold.

  The processing unit 33 may perform time synchronization of the target device 16 based on the error calculated by the calculation unit 32. The processing unit 33 may change the interval of the integrated value of the target device 16. Specifically, when the error is minus 5 minutes as in the above example, the integrated value section of the target device 16 may be shifted by 5 minutes. That is, the interval of the integrated value may be changed like 11:25 to 11:55, 11:55 to 12:25, and so on.

  The device control unit 34 receives a power amount control instruction and controls the target device 16 based on the control instruction. Specifically, the device control unit 34 acquires a commit amount to be committed from the aggregator 42 or the EMS cloud 43, and controls the target device 16 so that the commit amount can be achieved. For example, the device control unit 34 performs charge / discharge control of a distributed power source such as a storage battery, or performs control to reduce the instantaneous value of the electric energy of a load device such as an air conditioner.

  Next, an operation example in the communication system 1 according to the embodiment will be described with reference to FIG. FIG. 5 is a sequence diagram illustrating an example of an operation in the communication system 1 according to the embodiment. In FIG. 5, the storage battery 160a and the fuel cell 160b will be described as examples of the target device 16.

  As shown in FIG. 5, the HEMS controller 44 of the communication system 1 transmits a time acquisition instruction to the storage battery 160a (step S101). Subsequently, when the storage battery 160a receives the time acquisition instruction, the storage battery 160a acquires the time property value and returns it to the HEMS controller 44 as time information (step S102).

  Subsequently, the HEMS controller 44 transmits an electric energy acquisition instruction to the storage battery 160a (step S103). Subsequently, when the storage battery 160a receives the power amount acquisition instruction, the storage battery 160a acquires the integrated value of the power amount as the actual value and returns it to the HEMS controller 44 as the power amount information (step S104).

  Subsequently, the HEMS controller 44 transmits a time acquisition instruction to the fuel cell 160b (step S105). Subsequently, when receiving the time acquisition instruction, the fuel cell 160b acquires the property value of the time and returns it to the HEMS controller 44 as time information (step S106).

  Subsequently, the HEMS controller 44 transmits an electric energy acquisition instruction to the fuel cell 160b (step S107). Subsequently, when the fuel cell 160b receives the power amount acquisition instruction, the fuel cell 160b acquires the integrated value of the power amount as the actual value and returns it to the HEMS controller 44 as the power amount information (step S108).

  Subsequently, the HEMS controller 44 transmits a time acquisition instruction to the smart meter 45 (step S109). Subsequently, when receiving the time acquisition instruction, the smart meter 45 acquires a time property value and returns it to the HEMS controller 44 as time information (step S110).

  Subsequently, the HEMS controller 44 transmits an electric energy acquisition instruction to the smart meter 45 (step S111). Subsequently, when the smart meter 45 receives the power amount acquisition instruction, the smart meter 45 acquires the integrated value of the power amount as the actual value, and returns it to the HEMS controller 44 as the power amount information (step S112). Subsequently, the HEMS controller 44 calculates an error from the reference time based on the acquired time information (step S113).

  In addition, although the HEMS controller 44 transmitted the time acquisition instruction | indication and the electric power acquisition instruction | indication separately, you may transmit collectively. In such a case, the storage battery 160a, the fuel cell 160b, and the smart meter 45 may collectively transmit time information and power amount information to the HEMS controller 44.

  In the example illustrated in FIG. 5, the HEMS controller 44 performs the acquisition process of the time information and the electric energy information in the order of the storage battery 160a, the fuel cell 160b, and the smart meter 45. However, the order of the acquisition process is merely an example. Thus, it may be performed in any order.

  As described above, the HEMS controller 44 according to the embodiment includes the acquisition unit 31, the calculation unit 32, and the processing unit 33. The acquisition unit 31 acquires time information indicating the time of the target device 16 that is the acquisition target of the consumed electric energy. The calculation unit 32 calculates an error between the reference time and the time based on the time information acquired by the acquisition unit 31. The processing unit 33 performs processing based on the error calculated by the calculation unit 32. Thereby, it is possible to determine whether or not the actual value of the electric energy is a correct value on the HEMS controller 44 side.

  In the above-described embodiment, the case where the aggregator 42 and the EMS cloud 43 are configured separately has been described. However, the present invention is not limited to this, and the aggregator 42 and the EMS cloud 43 are configured integrally. May be. In such a case, the aggregator 42 also functions as the EMS cloud 43.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope of the present invention and the gist thereof, and are also included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 1 Communication system 11 System power supply 12 Residential distribution board 13 Distributed power distribution board 16 Target apparatus 16a Storage battery 16b Fuel cell 20 Communication part 21 Solar panel 22 Power conditioner 30 Control part 31 Acquisition part 32 Calculation part 33 Processing part 34 Device Control Unit 40 Storage Unit 40a Power Information 41 Electric Power Company 42 Aggregator 43 EMS Cloud 44 HEMS Controller 45 Smart Meter 160 Distributed Power Supply 161-164 Device H Contractor's Home

Claims (8)

An acquisition unit that acquires time information indicating a time of a target device from which power consumption is acquired;
A calculating unit that calculates an error between a reference time and the time based on the time information acquired by the acquiring unit;
A processing unit that performs processing based on the error calculated by the calculation unit;
A control device comprising: A device control unit that receives the control instruction of the electric energy and controls the target device based on the control command;
Further comprising
The acquisition unit
Obtain the actual value of the electric energy in the period controlled by the device control unit,
The processor is
The control apparatus according to claim 1, wherein power information in which the error is associated with the actual value is output to the outside. The acquisition unit
The control device according to claim 2, wherein an integrated value of the electric energy in a period controlled by the device control unit is acquired as the actual value. The processor is
4. The control device according to claim 2, wherein the control unit instructs the acquisition unit to change a timing for acquiring the actual value from the target device based on the error. 5. The calculation unit includes:
Calculating the error of the time relative to the reference time;
The processor is
The control device according to claim 4, wherein when the error is a negative value, an instruction is given to delay the timing by the time of the error. The processor is
The information indicating the content corresponding to the error is notified to a user having the target device when the error is equal to or greater than a predetermined threshold. The control device described. An acquisition step of acquiring time information indicating a time of a target device that is an acquisition target of consumed electric energy;
A calculating step for calculating an error between a reference time and the time based on the time information acquired by the acquiring step;
A processing step for performing processing based on the error calculated by the calculation step;
The control method characterized by including. On the computer,
An acquisition procedure for acquiring time information indicating the time of the target device from which the consumed electric energy is acquired;
A calculation procedure for calculating an error between a reference time and the time based on the time information acquired by the acquisition procedure;
A processing procedure for performing processing based on the error calculated by the calculation procedure;
A control program characterized by causing

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