KR101668701B1 - Method for controlling a device - Google Patents

Abstract

The present invention relates to a control method of a device, and more particularly, it relates to a method of controlling a device by recognizing the power information under a power network in which power information varies according to a specific time, And to a method of controlling a device that can efficiently use power.

Description

[0001] The present invention relates to a method for controlling a device,

The present invention relates to a control method of a device that can save electric bill and can use electric power efficiently.

The electrical network for electrical appliances such as home appliances or office appliances used in the office is generally supplied through power plants, transmission lines and wiring lines in this order.

The power network has a characteristic of being a central power source rather than a distributed power source, further radial structure spreading from the center to the periphery, and being a one-way supplier center rather than a consumer center.

The technology base is also analog or electromechanical. However, the above-described electric power network can not know the price information on the electric power in real time, but only through the power exchange. In addition, since the price system is a fixed fixed price system, incentives such as incentives for consumers through price changes can not be used.

In order to solve these problems and improve the efficiency of energy, researches on the next generation power network, so-called "smart grid (intelligent power grid)", are actively underway. The term "intelligent power grid" means the next generation power system and its management system implemented through the fusion and combination of modernized power technology and information and communication technology.

As mentioned above, the current grid is concentrated in the center and controlled by the producers, while the intelligent grid is more concentrated in the consumer and the horizontal and cooperation that enable the interaction between the consumer and the supplier It is a distributed, distributed network.

However, in order for the intelligent power network to be realized in the power consumer, there is a need to perform bidirectional communication with respect to the power source and the power information, away from the fact that the network to which one or more home appliances are connected is not unilaterally received.

In addition, it is possible to judge the electric charge in real time when using various kinds of devices including electric products, to induce the use of devices in the case of a high electricity rate time, and to save energy and electric charges There is an increasing need for a control method.

The present invention relates to a device capable of saving electric bill and efficiently using electric power by determining whether the electric product is driven by comparing the electric power information with predetermined reference information under a power network in which power information varies according to a specific time, And a control method of the control unit.

According to an aspect of the present invention, there is provided a method of operating a wireless communication system, including: (a) recognizing at least one power information including an electricity bill for each time interval divided by a predetermined time interval; (b) deriving reference information for each time interval from the recognized power information; (c) recognizing a trend of reference information during a predetermined time period; And (d) determining whether to drive the device according to the trend of the reference information.

Further, in the step (b), the step of deriving the reference information may be derived by selecting at least one or more power information of a corresponding time period of a specific day, a specific week, or a specific month.

Further, in the step (b), the step of deriving the reference information may include deriving a plurality of pieces of power information of the corresponding time period of the specific day, the specific week, or the specific month, and calculating an average value of the selected two or more pieces of power information .

In addition, in step (b), the step of deriving the reference information may be derived by calculating the power information of each corresponding interval for a specific number of days as a moving average.

The step of calculating the moving average may include calculating a moving average value of the power information for each time interval stored in advance and the power information of the recognized current time interval; And recognizing the estimated moving average value as reference information of a subsequent time interval.

The step of calculating the moving average value may calculate an average by multiplying the power information of each of the previously stored time intervals and the power information of the recognized current time interval by first and second weights proportional to the importance.

Also, the sum of the first and second weights may be one.

Further, the reference information may be set by a user or provided from a power supplier.

Also, the reference information may be derived through a microcomputer for controlling the driving of the device.

Further, in step (b), the reference information of the current and at least one or more subsequent time intervals may be derived.

In addition, in step (b), the reference information of the current and at least one previous time interval can be derived.

The method may further include recognizing an on-peak time interval in which the reference information exceeds a predetermined average value and an off-peak time interval in which the reference information is less than a predetermined average value.

Also, the device can be driven when the reference information is in a decreasing trend and the current time interval is included in the off-peak time interval.

It is also possible to drive the device when the reference information is increasing and the next time interval is included in the off peak time interval.

Also, the device can be driven only in the current time period when the reference information is increasing, the current time interval is included in the off peak time interval, and the subsequent time interval is included in the on peak time interval.

Also, the device may not be driven when the reference information is increasing and the subsequent time period is included in the on-peak time period.

In addition, it is possible to drive only the functions of some of the at least two power consumption units included in the device.

In addition, it may not drive the function of some of the at least two power consumption units included in the device.

Further, the power information may include at least one of an electricity rate, a power rate, a rate of change of the electric rate, a rate of change of the electric power rate, an average value of the electricity rate, and an average value of the electric power amount.

In addition, the average information may include an average value of power information of a specific day, a specific week, or a specific month.

In addition, the step of determining whether the device is driven may be automatically performed by a user input or a microcomputer.

The method may further include displaying the power information and the reference information to the outside so that the user can recognize the power information and the reference information.

The step of recognizing the on-peak time interval and the off-peak time interval may be performed by comparing the power information provided to the device with the reference information set on the device, And can be recognized by the information of the section and the off-peak time interval.

As described above, according to the control method of the device related to the embodiment of the present invention, the power information is recognized under the power network in which the power information varies according to the specific time, and compared with the predetermined reference information, It is possible to save the electric bill and use the electric power efficiently.

1 is a schematic diagram of an intelligent power network;
2 is a schematic diagram of a power supply network system associated with the present invention.
3 is a front view of an energy management apparatus according to the present invention.
4 is a control block diagram of a power supply network system associated with the present invention.
5 is a control block diagram of another embodiment of a power supply network system associated with the present invention.
6 is a flowchart showing a control method of a device related to an embodiment of the present invention.
7 is a graph for explaining power information related to the present invention.
8 is a graph for explaining reference information related to the present invention.
9 is a graph for explaining an on peak time interval and an off peak time interval according to the present invention.
10 is a table for explaining one embodiment of the reference information related to the present invention.

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

FIG. 1 is a schematic diagram of a smart grid. The smart grid includes a power plant generating electricity through thermal power generation, nuclear power generation, or hydroelectric power generation, and a photovoltaic power generation plant and a wind power generation plant using solar power or wind power .

The thermal power plant, nuclear power plant or hydroelectric power plant transmits electric power to the electric power plant through a transmission line, and electric power is sent to the substation in the electric power plant so that electric power is distributed to the consumer such as the home or the office.

Electricity generated by renewable energy is also sent to the substation and distributed to each customer. Electricity transmitted from the substation is distributed through the electric power storage device to the office or each household.

Even in the home using a home network (HAN), it is possible to produce electricity by itself through the fuel cell mounted on sunlight or PHEV (Hybrid Electric Vehicle, Plug in Hybrid Electric Vehicle) The remaining electricity can be returned to the outside.

In the office or home, a smart measuring device is provided to grasp real-time power and electric charges used in each customer. Through this, the user recognizes the current amount of electric power and the electric charge, Can be considered.

In addition, since the power plant, power station, storage device, and consumer are two-way communication, it is necessary to notify the storage device, the power station and the power station of the situation of the demanding place separately from the one- Electric distribution can be performed.

Meanwhile, in the above-mentioned smart grid, an Energy Management System (EMS) and an Advanced Metering Infrastructure (AMI), which measure real-time power management of demanders and real-time power consumption, It is responsible for the role of

The measurement device under the Smart Grid is based on an open architecture and is an underlying technology to integrate consumers. It provides consumers with the ability to use electricity efficiently, and power suppliers to detect system problems and efficiently operate the system do.

Here, open architecture is a standard that allows all electric devices to be connected to each other regardless of which manufacturer manufactures the electric devices in a smart grid system, unlike a general communication network.

Thus, the metering devices used in the Smart Grid enable consumer-friendly efficiency concepts such as "Prices to Devices ".

That is, the real-time price signal of the electric power market is relayed through the energy management device (EMS) installed in each home. The energy management device (EMS) communicates with each electric device and controls it. It is possible to save energy and cost by recognizing the power information of each electric device and performing the power information processing such as the setting of the consumed electric power amount and the electric charge limit based on the information.

Wherein the energy management device (EMS) communicates with a local energy management device (EMS) used in an office or a home and bi-directional communication with the local energy management device (EMS) to process information collected in a local energy management device And a central energy management device (EMS).

Since the smart grid enables real-time communication of power information between the supplier and the consumer, it is possible to realize a "real-time power grid reaction ", thereby reducing the high cost required to meet the peak demand.

FIG. 2 shows a power supply network system 10 in a home, which is a major demand source of a smart grid. The power supply network system 10 includes a power supply network system 10 that measures real- (EMS) 30 connected to a plurality of electric devices such as a household appliance and connected to the measuring device (smart meter) 20 and controlling the operation thereof, Respectively.

Here, the energy management device (EMS) 30 includes a screen 31 for displaying current electricity consumption state and external environment (temperature, humidity), and is provided with an input button 32 or the like And is provided in the form of a terminal equipped.

The energy management device EMS is connected to an electrical appliance such as a refrigerator 101, a washing machine and a dryer 102, an air conditioner 103, a TV 105 or a cooking appliance 104 through a network in the home , And bi-directional communication with them.

Such communication may be via wireless or wired such as a PLC.

Further, it is preferable to arrange each electric appliance so as to be connected to other electric appliances so as to be able to communicate with each other.

Meanwhile, if necessary, the electric appliances may be connected to respective ones of the electric appliances 200 through 205 which can supply electric power to the respective electric appliances, either alone or in common to all the electric appliances, and the respective accumulators are connected to each other.

The storage batteries 200 to 205 serve to supply electric power to the electrical product when necessary, after receiving electricity from the outside.

FIG. 3 illustrates an embodiment of an energy management system (EMS) of the present invention, wherein the energy management system (EMS) is in the form of a terminal with a touch panel 33.

The touch panel 33 displays today's energy information such as the current electricity usage amount and the electricity rate, the estimated rate estimated by the accumulated history and the carbon dioxide generation amount, the electricity rate of the current time interval, And a screen 31 on which real-time energy information and weather information including the time zone where the electricity rate is changed are displayed.

The screen 31 of the touch panel includes a graph showing the amount of power consumed and the change in power consumption of each electric appliance by time, and a graph that facilitates recognition of the electric storage amount stored in the battery or common battery connected to each electric appliance .

Through this, the user can easily judge whether each electric storage amount is sufficient or not.

On the other hand, a button unit 32 is provided on one side of the screen 31 so as to allow the user to set the operation of the electric appliance as required.

By using the button unit 32, the user can set the amount of electric power or the limit of the electric charge he / she intends to use. According to the setting, the energy management apparatus (EMS) 30 can control the operation of each electric appliance It will be.

Figure 4 shows a control block diagram of a power supply network under a smart grid and a power supply network system for powering electrical appliances in the home.

Here, the power supply source may be a power company 50 having general power generation equipment (thermal power, nuclear power, hydro power) or generating equipment using renewable energy (solar power, wind power, geothermal power) A solar power generation facility 51 that can be equipped in each home, and a fuel cell 52 that can be installed in the vehicle.

The power source is connected to the measuring device (smart meter) 20, and the measuring device (smart meter) 20 is connected to the energy management device (EMS)

The EMS 30 includes a control unit 35 and an input unit 38, a communication unit 34, and a display unit 39.

The communication unit 34 communicates with home appliances such as the refrigerator 101, the washing machine or the dryer 102, the air conditioner 103, the cooking apparatus 104, etc., And transmits and receives information.

In addition, the control unit 35 grasps the setting information input by the user by the input unit 38, the operation history and the electric power usage history information of the electric equipment that have been accumulated in advance, and the amount of electric power supplied from the outside, And controls the operation of the electrical products and controls the power supplied to the electrical products.

Each of the electrical appliances is provided with storage batteries 201 to 204, and each of the storage batteries is connected to another storage battery. On the other hand, a common storage battery 200 that can be commonly used is connected to a power demanding place, that is, a home power network itself.

The shared storage battery 200 has a larger storage capacity than the storage batteries 201 to 204 connected to the respective electrical appliances, and functions to supply power to the electrical appliances. That is, the storage batteries 201 to 204 connected to each electric appliance serve to supply electric power to the electric appliance, but the common storage battery 200 can supply electric power to all electric appliances connected to the electric power network.

 The common storage battery 200 and the storage batteries 201 to 204 can communicate with the communication unit 34 of the energy management device (EMS) 30.

Electricity is stored in the common storage battery 200 and the storage batteries 201 to 204 in accordance with a storage command of the control unit 35 of the energy management apparatus (EMS)

The common battery 200 and the batteries 201 to 204 may supply electric power stored in accordance with a control command of the controller 35 to an electric appliance connected to each battery or supply electric power to another appliance .

However, as shown in FIG. 5, it is also conceivable to provide an energy management device (EMS) 30 in the electric appliance which is to be operated continuously for 24 hours, like the refrigerator 101 in the electric appliance.

The control section 35 of the energy management apparatus (EMS) 30, the communication section 34, the input section 38, and the display section 39 are provided separately from the control section 101a and the storage battery 201 of the electrical product having such characteristics It is also conceivable that the operation signal and the electric power information of all electric appliances are transmitted and received and processed by the energy management device (EMS) 30.

Except for the location of the above-mentioned energy management device (EMS) 30, its operation is the same as that shown in FIG. 4, so a detailed description will be omitted.

In the present invention, the common battery 200 and the storage batteries 201 to 204 connected to the respective electrical appliances, the energy management apparatus (EMS) 20 used for storing the same, and the storage batteries 201 to 204 are connected Electric products are collectively referred to as devices.

Therefore, the control method of the device may be the energy management device (EMS) 20 that gives a power down command for power generation, the control method of each electric product, or the common battery 200 It can also be interpreted as a control method of the storage batteries 201 to 204 connected to the respective electric appliances.

FIG. 6 is a flowchart illustrating a method of controlling a device according to an embodiment of the present invention. FIG. 7 is a graph for explaining power information related to the present invention, and FIG. FIG. 9 is a graph for explaining an on-peak time interval and an off-peak time interval according to the present invention, and FIG. 10 is a table for explaining one embodiment of reference information related to the present invention.

Referring to FIG. 6, a method of controlling a device according to an embodiment of the present invention includes: (a) recognizing at least one piece of electric power information including an electric charge for each time period divided at a predetermined time interval (S100 (B) obtaining reference information for each time interval from the recognized power information (S101); (c) recognizing trends of reference information during a predetermined time interval (S102); and And determining whether to drive the device according to the trend of the reference information (S103).

Here, the power information may include at least one of an electricity rate, a power rate, a rate of change of the electric rate, a rate of change of the electric power rate, an average value of the electricity rate, and an average value of the electric power amount, and may be provided by the electric power supplier.

The power information may include power information of a grid power source and power information of a distributed power source such as renewable energy (solar heat, wind power, and geothermal power), and the power information of the distributed power source may include climate information and operation information . ≪ / RTI > Here, the operation information of the distributed power source may include at least one of electric power generation amount, power generation cost, and electric charge, reflecting the climate information.

In addition, the recognizing step S100 may include collecting and acquiring power information, and collecting and processing or determining the acquired power information.

The step of acquiring and acquiring power information may also include receiving power information from the power supplier.

Further, the step of processing the power information may be processed by a user, processed by a power supplier, calculated by a microcomputer for controlling the driving of the device, or may be calculated by the above-described energy management device.

Referring to FIG. 7, in the intelligent power network related to the present invention, for example, the electricity rate may fluctuate according to a specific day, a specific week, or a specific month. Particularly, For example, in an on peak time period where power consumption is high, an electricity charge is higher than an off peak time period in which power consumption is relatively small.

Also, under the intelligent power network, the power supplier can provide the user with electricity bill information for each time period that is separated by a predetermined time interval.

Here, the electricity rate information may include only the electricity rate information of the time period including the current time or the type of the schedule information that can be known in advance to the electricity rate information after the time period including the current time, Can be classified into a real-time information type that can be known only in the corresponding time period. The former can easily know the electricity rate information of the next section from the current time, so that the latter can easily estimate the electricity rate information It is difficult to predict because it is unknown.

For example, electricity rate information (schedule information type) for each section divided by a predetermined time interval means power rate information for 24 hours at 12 o'clock every day or night at 12 o'clock for 1 hour Or a time period of 30 minutes.

Specifically, the user can confirm the power charge for 24 hours through the energy management device or the like in advance. On the other hand, the electricity rate information for each section divided by a predetermined time interval in real time means that the electricity rate information for the next 5 minutes or 30 minutes is continuously received, for example, at intervals of 5 minutes or 30 minutes do. Therefore, the user can know the electricity rate information for a maximum of 5 minutes or 30 minutes in the future, but it is difficult to know the electricity rate information beyond that.

As described above, bidirectional communication between a power supplier and a demander is possible under an intelligent power network. A power supplier can monitor electricity usage in a demand place in real time, and can flexibly set an electricity bill for a later time. It is possible to postpone the driving time of the electric appliance or suspend the use of the electric appliance in operation so that the customer can save the electric bill and the electric power provider can efficiently distribute the electric power .

Under such an intelligent power network, it is desirable for a user or a consumer to reduce the driving time of the appliance in an on peak time interval in order to save electric bills.

Referring to FIG. 7, if the real-time charge type is more specifically described, the electric power supplier can newly charge the electric charge of the following time interval at a predetermined time interval and transmit it to the consumer in real time. For example, if the power supplier transmits at 5-minute intervals and the first time (T_1) is 9:00 am, the second time (T_2) is 9:05 am, and each subsequent time (T_3 to T_6 and T_K To T_K + 2) are increased by 5 minutes from the previous time.

Each time included between the first time and the second time may be referred to as a first time interval (? T1), and the electric charges at each time point in the first time interval (? T_1) are the same. Likewise, each time included between the K (K> 1) time and the K + 1 time may be referred to as a K period, and the electricity charges at each time in the K period (ΔT_K) are the same.

In the real-time charge type, when the time to turn on the device belongs to the K-th time interval? T_K, the user can recognize the electric charge in the K-th time period, but the K + The electricity bill of the time interval (T_K + 1) is unrecognized.

A method of controlling a device according to an embodiment of the present invention includes deriving reference information for each time interval from the recognized power information to predict the power information (e.g., electric bill) in the following time interval . For example, the reference information represents a predicted value of the electricity bill of the subsequent time period.

Here, the step of deriving the reference information may be derived by selecting at least one or more power information of a corresponding time period of a specific day, a specific week, or a specific month.

For example, the reference information of the (K + 1) -th time interval ΔT_K + 1 as the next time interval is the electricity rate of the (K + 1) -th time period ΔT_K + 1 of the specific day And may be determined as the electricity rate of the (K + 1) -th time period (DELTA T_K + 1) of the specific week or the specific month.

The step of deriving the reference information may be derived by selecting a plurality of pieces of power information of a corresponding time period of a specific day, a specific week, or a specific month, and calculating an average value of the selected two or more pieces of power information.

For example, the average value of the electric charges of the (K + 1) -th time period (? T_K + 1) for a certain period (5 days or 7 days) can be calculated and adopted as the reference information.

In addition, deriving the reference information may be derived by calculating the power information of each corresponding interval for a specific number of days as a moving average.

For example, when the 5-day moving average value is adopted as the reference information, the reference information is derived from the electric charges of the (K + 1) -th time interval (ΔT_K + 1) over the last five days, It is possible to calculate the moving average by including the electricity rate of the (K + 1) -th time period (DELTA T_K + 1) before the day before the electricity bill of the K + 1 time period (DELTA T_K + 1) of the oldest day.

The step of calculating the moving average may include calculating a moving average value of the power information for each time interval stored in advance and the power information of the recognized current time interval; And recognizing the estimated moving average value as reference information of a subsequent time interval.

The step of calculating the moving average value may calculate an average by multiplying the power information of each of the previously stored time intervals and the power information of the recognized current time interval by first and second weights proportional to the importance.

Also, the sum of the first and second weights may be one.

For example, referring to FIG. 10, FIG. 10B shows an electricity bill for a current time period (that is, today) in which a device is to be driven, FIG. 10A shows a current time interval , Yesterday).

Referring to FIG. 10 (b), if the current time is 00:15, it can be recognized that the electricity bill is 1000 won, but the electricity bill after 00:30 is not recognized.

Therefore, the electricity bill after 00:30 is required to be predicted. At this time, referring to FIG. 10 (a), the electricity bill of 1100 won for the previous time period (00:30 to 01:00, B) The electricity bill after 00:30 of the time interval can be predicted. That is, 1000 won is multiplied by the first weight, 1100 won is multiplied by the second weight, and the average is multiplied by the electricity rate for the time period after 00:30. In this case, the sum of the first weight and the second weight may be 1, and if the first weight is 0.5, the electricity bill after 00:30 of the current time interval may be estimated as 1105 won (B '). These weights may be determined by the user or provided by the power provider.

The reference information may be directly set by a user, provided by a power supplier, or may be derived through a microcomputer for controlling driving of the device.

Referring to FIG. 8, it is possible to predict all the current standard rates using the old electricity rate. The power information of the current A 'time interval can be predicted from the power information of the previous A time interval through a plurality of updating processes using the above-described various averages.

In addition, in step (b), it is possible to derive the current information and the reference information of at least one or more subsequent time intervals, or to derive the current information and the reference information of at least one previous time interval, If all are predicted, it can of course be used similar to the scheduling type power information.

8 and 9, a method of controlling a device according to an exemplary embodiment of the present invention includes a step of comparing a reference average value of a reference average value with a predetermined average value, May be further included. The average value may include an average of power information of a specific day, a specific week, or a specific month.

The step of recognizing the on-peak time interval and the off-peak time interval may be performed by comparing the power information provided to the device with the reference information set on the device, And can be recognized by the information of the section and the off-peak time interval.

Meanwhile, a method of controlling a device according to an embodiment of the present invention includes recognizing a trend of reference information during a predetermined time period.

That is, when the reference information for each time interval is derived from the recognized power information, the trend of the reference information with respect to the subsequent time period after driving the device is recognized, and it is determined whether or not the device is driven according to the trend of the reference information do.

For example, if the current time interval corresponds to the off-peak time interval as a result of comparing the reference information with the average value, if the reference information corresponds to an increasing trend and the subsequent time interval is predicted to correspond to the on- The device may not be driven.

Also, the device can be driven when the reference information is in a decreasing trend and the current time interval is included in the off-peak time interval.

It is also possible to drive the device when the reference information is increasing and the next time interval is included in the off peak time interval.

Also, the device can be driven only in the current time period when the reference information is increasing, the current time interval is included in the off peak time interval, and the subsequent time interval is included in the on peak time interval.

Also, the device may not be driven when the reference information is increasing and the subsequent time period is included in the on-peak time period.

In addition, the step of determining whether the device is driven may be automatically performed by a user input or a microcomputer, and may further include the step of displaying the power information and the reference information externally so that the user can recognize the power information and the reference information. have.

On the other hand, in the step of determining whether to drive the device, it may be possible to drive only the function of some power consumption unit or the function of some power consumption unit among at least two or more power consumption units included in the device.

The foregoing description of the preferred embodiments of the present invention has been presented for purposes of illustration and various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention, And additions should be considered as falling within the scope of the following claims.

10: power supply network system 20: measuring device
30: Energy management device 31: Display
32: input unit 34: communication unit
35: control unit 40: clock / timer

Claims (23)

(a) recognizing at least one power information including an electricity rate for each time period divided by a predetermined time interval;
(b) deriving, from the recognized power information, reference information corresponding to a predicted electricity bill of a subsequent time period;
(c) recognizing a trend of reference information during a predetermined time period;
(d) determining whether the device is driven according to the trend of the reference information; And
The step (d)
Further comprising recognizing an on peak time interval in which the reference information exceeds a predetermined average value and an off peak time interval in which the reference information exceeds a predetermined average value,
And stops driving the device when the trend of the reference information corresponds to an increasing trend and the subsequent time period is predicted to correspond to the on peak time period. 2. The method of claim 1, wherein in step (b)
Wherein the step of deriving the reference information is derived by selecting at least one or more power information of a corresponding time period of a specific day, a specific week, or a specific month. 2. The method of claim 1, wherein in step (b)
Wherein the step of deriving the reference information is derived by selecting a plurality of pieces of power information in a corresponding time period of a specific day, a specific week, or a specific month, and calculating an average value of the selected two or more pieces of power information . 2. The method of claim 1, wherein in step (b)
Wherein deriving the reference information is derived by estimating power information of each corresponding section during a specific number of days as a moving average. 5. The method of claim 4, wherein estimating the moving average comprises:
Calculating power information for each time interval stored in advance and a moving average value of power information of the recognized current time interval; And
And recognizing the calculated moving average value as reference information of a subsequent time period. 6. The method of claim 5, wherein calculating the moving average comprises:
Wherein the average is calculated by multiplying the power information for each time interval stored in advance and the power information of the recognized current time interval by first and second weights proportional to the importance. The method according to claim 6,
Wherein the sum of the first and second weights is one. 5. The method according to any one of claims 2 to 4,
Wherein the reference information is set by a user or provided from a power supplier. 5. The method according to any one of claims 2 to 4,
Wherein the reference information is derived through a microcomputer for controlling driving of the device. 2. The method of claim 1, wherein in step (b)
And derives reference information of the current and at least one or more subsequent time intervals. 2. The method of claim 1, wherein in step (b)
And derives reference information of the current and at least one previous time interval. delete The method according to claim 1,
Wherein the device is driven when the reference information is in a decreasing trend and the current time interval is included in an off peak time interval. The method according to claim 1,
Wherein the device is driven when the reference information is in an increasing trend and a subsequent time period is included in an off peak time period. The method according to claim 1,
Wherein the device is driven only in the current time interval when the reference information is increasing and the current time interval is included in the off peak time interval and the subsequent time interval is included in the on peak time interval. The method according to claim 1,
Wherein the device is not driven when the reference information is in an increasing trend and a subsequent time interval is included in an on peak time interval. 17. The method according to any one of claims 13 to 16,
Wherein the control unit drives only the functions of at least two of the at least two power consumption units included in the device. 18. The method of claim 17,
And does not drive the function of some of the at least two power consumption units included in the device. The method according to claim 1,
Wherein the power information includes at least one of an electricity rate, a power rate, a rate of change of the electric rate, a rate of change of the electric power rate, an average value of the electricity rate, and an average value of the electric power amount. The method according to claim 1,
Wherein the reference information includes an average value of power information of a specific day, a specific week, or a specific month. The method according to claim 1,
Wherein the step of determining whether the device is driven is automatically performed by a user input or a microcomputer. The method according to claim 1,
Further comprising the step of displaying the power information and the reference information externally so that the user can recognize the power information and the reference information. The method according to claim 1,
The step of recognizing the on-peak time interval and the off-
And comparing the power information provided to the device with the reference information set in the device,
Peak time interval and an off-peak time interval provided from the outside of the device.

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