KR20110042866A - Power supply network system and control method - Google Patents

Abstract

The present invention relates to a power supply network system and a control method thereof, and more particularly, to an invention for saving power costs and preventing unnecessary power consumption.

The present invention is a two-way communication with the power supply and measuring device for measuring and displaying the power information in real time; and connected to the measuring device based on the power information and at least one of the power information supplied from the outside of the electrical appliance; An energy management device for controlling the operation of the electrical appliance, connected to the plug and connected to the outlet of the electrical appliance, and communicates with the energy management device to selectively supply or cut off power to the electrical appliance by the control of the energy management device The present invention provides a power supply network system and a control method thereof comprising a power management adapter.

Description

A network system supplying electric power and a control method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply network system and a control method thereof, and more particularly, to an invention that can reduce power costs and prevent waste of unnecessary power such as standby power.

Electric power for the operation of electrical appliances such as home appliances used in homes or office equipment used in offices is generally supplied through a power plant operated by KEPCO, a transmission line, and a wiring line. It is characteristic.

It has the characteristics of a central power source, not a distributed power source, a radial structure that spreads from the center to the periphery, and is characterized by a unidirectional supplier center rather than a consumer center.

In addition, the technology base is analog or electromechanical, there is a problem that must be restored manually in case of an accident, and the equipment must also be restored manually.

The price information for electricity is not only available in real time, but only limitedly through the power exchange, and since the price system is a de facto fixed price system, incentives such as incentives to consumers through price changes can be used. There was also a problem that can not be.

In order to solve these problems and improve energy efficiency, research on smart grids (intelligent power grids) has been actively conducted recently.

The smart grid refers to the next generation power system and its management system that are realized through the convergence and complex of modern power technology and information communication technology.

As mentioned above, the current grid is a centralized, producer-controlled, vertical, centralized network, whereas the smart grid is less focused on suppliers and horizontal, collaborative to enable interaction between consumers and suppliers. It is an enemy, decentralized network.

The smart grid is sometimes called the "energy internet" because all electrical devices, power storage devices and distributed power supplies are networked to enable interaction between consumers and suppliers.

On the other hand, in order to realize such a smart grid from the perspective of a power consumer such as a home or a building, it is necessary to bidirectionally communicate with a power supply source and power information, instead of unilaterally receiving power from an individual home appliance and a network to which a plurality of home appliances are connected. And the need for new devices for this two-way communication.

In addition, the power supply network system for home or business that can reduce the electricity bill by judging the electricity bill in real time and recognizing the peak time of the electricity bill when possible, and refraining from using the electrical appliance at that time. And the need for its operation was raised.

An object of the present invention is to reduce the power usage in the time period when the power charge is imposed to the maximum to save the power bill.

In addition, by using the power within the range set by the user to prevent excessive power consumption is its purpose.

In addition, there is another object to prevent the power consumption caused by unnecessary standby power when the electrical appliance is stopped.

The present invention for achieving the above object is an energy management device for controlling the operation of the electrical appliance based on the power information and power information supplied from at least one electrical appliance, and

A power management adapter connected to a plug of an electrical appliance and coupled to an outlet, the power management adapter communicating with the energy management unit to selectively supply or cut off power to the electrical appliance under control of the energy management unit; Provide a supply network system.

The power management adapter includes a first coupling unit to which the plug of the electrical appliance is coupled;

A second coupling part coupled to the outlet;

A switch unit for selectively connecting the first coupling unit and the second coupling unit;

It characterized in that it comprises a communication unit and a switch driving unit for driving the switch unit in response to the control command of the energy management device.

The power management adapter is characterized in that it further comprises a timer for generating a signal to enable the switch unit to operate from the on operation to the off operation or vice versa after a predetermined time.

The power management adapter further comprises a power measurement unit for measuring the amount of power consumption of the connected electrical appliances.

It is characterized in that it further comprises a power management communication chip provided in the electrical appliance for transmitting and receiving power information of the energy management device and the power management adapter and the electrical appliance.

The switch unit is characterized in that when the operation stop command is received to the electrical appliance to perform the off operation to prevent the power supply between the external power and the electrical appliance to prevent the generation of standby power.

The energy management device includes an input unit for inputting setting information by a user;

A display unit for displaying an expected power consumption amount according to real-time power consumption amount and accumulated use information of the electric product;

A communication unit for communicating with the power measuring device, the plurality of electrical appliances, and a communication unit of the power management adapter;

And an input unit, a display unit, a communication unit, and a control unit for controlling an operation and supply of power of the electrical appliance.

Determining whether the current time belongs to an electric charge maximum section in which an electric charge is imposed the maximum;

If the current time belongs to an electric bill maximum section, determining whether an electrical product is set to delay operation or minimize power consumption within the electric bill maximum section;

When a target electrical appliance is set to delay or minimize the operation, the power management adapter or the electrical appliance connected to the electrical appliance is controlled to delay the operation of the target electrical appliance or consume power until the current time exceeds the maximum electric charge interval. It provides a control method of a power supply network system, characterized in that the control to minimize.

Delaying the operation of the appliance;

Operating the timer to set a time that must elapse until the preset electric charge maximum period is set by a timer provided in a power management adapter connected to the set target electric appliance;

And operating a switch of the power management adapter to cut off all power including standby power supplied to the set target electrical appliance.

If it is determined that the current time is out of the maximum power bill period by the time elapsed notification of the timer,

Indicating completion of the target electrical appliance operation delay state and releasing the operation of the timer;

And operating the switch to supply power to the set electrical appliance.

If it is determined that the current time is not the maximum charge period,

By comparing the current power consumption with the set reference amount, if the current power consumption exceeds the set reference value, the operation priority between the electrical appliances is set according to whether or not to operate in the preset power consumption mode for each electrical appliance or as the last priority of the operation. It characterized in that the control to stop the operation of the set electrical appliances or to minimize the power consumption.

If operating priority between electrical appliances is set,

Stopping the electrical appliances of the last priority among the electrical appliances in operation is characterized in that made by the power supply blocking operation of the power supply adapter connected to the electrical appliances.

If operating priority between electrical appliances is set,

The step of controlling the lowest priority electric appliance among the operating electric appliances in the power consumption mode may minimize the power consumption during the operation mode set for the electric appliance by the energy management device in which the electric appliance controls the electric appliance. Characterized in that the driving mode is performed.

Comparing the current electric power consumption with a set reference amount in a state where the last priority electric appliance is stopped or in a state of operating a minimum power consumption mode;

If it is determined that the current power consumption still exceeds the set reference amount, it is characterized by stopping the operation of the electric appliances of the lowest priority among the electric appliances currently operating in the state set by the user or operating in the power minimum mode.

It is judged that the current power consumption is smaller by comparing the set reference amount with the current power consumption, and the difference between the set reference value and the current power consumption is less than the expected power consumption of the highest priority electrical appliance among the electrical appliances operating in the stopped state or the minimum power consumption mode. If judged to be large,

The electrical appliance is characterized in that the control to return to the previous operating state.

The step of returning the stationary electrical appliance to the previous operating state is characterized in that performed by the switch operation of the power management adapter.

If the operating priority between the appliances is not set,

The controlling of the electric power consumption mode preset for each electric appliance may include: an operation mode in which each electric appliance may minimize power consumption among operation modes set for each electric appliance by an energy management device controlling the electric appliance. Characterized in that performed by.

According to the present invention, it is possible to save the power charge by reducing the power usage of the remaining electrical appliances except for the indispensable electrical appliances at the time when the power charge is imposed the maximum.

In addition, it is possible to prevent excessive power consumption by making the power use within the range set by the user.

In addition, it is possible to prevent the power consumption caused by unnecessary standby power when the electrical appliance is stopped.

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

1 is a schematic diagram of a smart grid, which includes a power plant that generates power through thermal, nuclear, or hydro, a solar power plant using wind or wind power as renewable energy, and a wind power plant. .

In addition, the thermal power plant or nuclear power plant or hydroelectric power station transmits power to a power station through a transmission line, and the power station sends electricity to a substation so that the electricity is distributed to a demand destination such as a home or an office.

The electricity produced by the renewable energy is also sent to substations to be distributed to each customer. The electricity transmitted from the substation is distributed to the office or each household via the power storage device.

Even in homes that use the Home Area Network (HAN), it is possible to supply electricity by producing electricity by itself through fuel cells mounted on solar power or PHEV (Plug-in Hybrid Electric Vehicle). The remaining electricity can also be sold outside.

In addition, the smart measuring device is installed in the office or home to identify the real-time power and electricity bills used at each demand source. Through this, the user recognizes the amount of electricity and the electricity bill currently used, and according to the situation, the power consumption or the electricity bill according to the situation. Measures to reduce the

On the other hand, since the power plant, power station, storage device and the source of demand are bidirectional communication, only the unilaterally receive electricity from the source of demand, and notify the storage, power station, and power plant of the demand source to produce electricity according to the situation of the source of demand. Electric distribution can be performed.

Meanwhile, in the smart grid, an energy management system (EMS), which is responsible for real-time power management and real-time prediction of power consumption, and an advanced metering infrastructure (AMI), which measures power consumption in real time, are pivotal. Play the role of person.

Here, the measuring device under the smart grid is a basic technology for integrating consumers on the basis of open architecture, and provides consumers with the ability to efficiently use electricity, and provides power providers with the ability to operate the system efficiently by detecting problems in the system. do.

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

Thus, the instrumentation used in the smart grid enables a consumer friendly efficiency concept 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, and the energy management device (EMS) communicates with and controls each electric device so that the user can control the energy management device (EMS). By recognizing the power information of each electric device and performing the power information processing such as the amount of power consumption or the electric charge limit setting based on the power information, energy and cost can be saved.

The energy management device (EMS) is a local energy management device (EMS) used in the office or at home, and the local energy management device (EMS) by performing bidirectional communication to process the information collected from the local energy management device (EMS) It is preferably composed of a central energy management device (EMS).

The smart grid enables real-time communication of power information between suppliers and consumers, enabling "real-time grid response" to be realized, thereby reducing the high cost of meeting peak demand.

2 shows a power supply network system 10 in a home, which is a major consumer of a smart grid.

The power supply network system 10 includes a measuring device (smart meter) 20 capable of measuring in real time the power and electricity rates and power consumption peak time intervals supplied to each home, and the measuring device (smart meter) ( And an energy management device (EMS) 30 connected to a plurality of electrical devices such as home appliances and controlling their operation.

For reference, the power consumption peak time section, or the maximum power bill period refers to a section in which the power consumption becomes the most expensive and the most expensive power bill, which is disclosed in FIG.

Here, the energy management device (EMS) 30 has a screen 31 for displaying the current state of electricity consumption and the external environment (temperature, humidity), and provides an input button 32 or the like which can be operated by a user. It is preferably provided in the form of a terminal provided.

The energy management device (EMS) 30 is again 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 home network. It will be connected to, and bi-directional communication with them.

Communication inside the house can be via wireless or wired, such as a PLC.

In addition, it is preferable that the electrical appliances are arranged to be connected to other electrical appliances so that communication is possible.

On the other hand, in the home is provided with an outlet 300 for power supply, typically, the outlet (300) is connected to the plug (P) connected to the end of the cord connected to each electrical appliance is supplied power to the electrical appliance.

By the way, in the present invention, the standby power is cut off while the electrical appliance is stopped, and the power management adapter 200 is coupled to the plug P for effectively supplying and blocking power, and the power management adapter 200 is connected to the outlet ( 300).

Figure 3 shows an embodiment of the energy management device (EMS) of the present invention, the energy management device (EMS) is in the form of a terminal having a touch panel 33.

The touch panel 33 includes current energy information such as current electricity consumption, electricity rate, estimated charge and carbon dioxide generation amount estimated by accumulated history, electricity rate of the current time interval, and next time interval. A screen 31 is displayed in which real-time energy information and weather information including an electricity rate and a time zone in which the electricity rate changes are displayed.

In addition, the screen 31 of the touch panel includes a graph showing power consumption by time zone of each home appliance and a change thereof.

In addition, the information on whether the power supply by product is displayed. In the ON state, the power supply adapter is a mediator for power supply. In the OFF state, the power supply adapter cuts off the power supply between the outlet and the electric device to prevent standby power generation.

One side of the screen 31 is provided with a button unit 32 that allows the user to set the operation of the electrical appliance, if necessary.

By using the button unit 32, the user can set a limit of the amount of electricity or electricity bill that he or she wants to use, and according to this setting, the energy management device (EMS) 30 can control the operation of each electric product. Will be.

FIG. 4 shows a control block diagram of a power supply network system that is responsible for power supply for a power supply under a smart grid and electrical appliances in a home.

Here, the power supply source may be a power company 50 having general power generation equipment (fire power, nuclear power, hydropower) or power generation equipment using renewable energy (solar, wind, geothermal) and the like. It includes a self-photovoltaic facility 51 that can be provided in each home, and a fuel cell that can be provided in a fuel cell car or a home.

This power supply source is connected to the measuring device (smart meter) 20, the measuring device (smart meter) 20 is connected to the energy management device (EMS) (30).

Here, the configuration of the energy management device (EMS) 30, the control unit 35, the input unit 38, the communication unit 34, the display unit 39 is included.

The communication unit 34 communicates with electrical appliances in a home, that is, a refrigerator 101, a washing machine or a dryer 102, an air conditioner 103, a cooking appliance 104, and the like, and power information and driving thereof. It is responsible for transmitting and receiving information.

In addition, a power management communication chip (101a; 102a; 103a; 104a) is provided inside the electrical appliance (101; 102; 103; 104) to provide information on the use of the electrical appliance (101; 102; 103; 104). Process.

The power management communication chip (101a; 102a; 103a; 104a) is provided to communicate with the energy management device (EMS) 30 and the power management adapter (200; 201, 202, 203, 204) and the power consumption of each electrical appliance The same power information is transmitted and received with the energy management device (EMS) 30 and the power management adapter 200 (201, 202, 203, 204).

The control unit 35 grasps the setting information input by the user by the input unit 38, the operation and power usage history information of the existing electrical appliances, and the amount of power supplied from the outside in real time, and the information in real time. Processing to control the operation of electrical appliances and to control the power supplied to these electrical appliances.

Meanwhile, the power management adapters 200; 201, 202, 203, 204 are inserted into the plugs of the electrical appliances 101, 102, 103, 104, and the power management adapters 200; 201, 202, 203, 204 are connected to the outlets 301; 302; 303; 304. .

The power management adapter (200; 201, 202, 203, 204) is provided so as to be able to communicate with the communication unit 34 of the energy management device (EMS) (30) under the control of the energy management device (EMS) 30, each of the electrical appliances (101, 102, 103, 104) Optionally power on and off).

The wires connected to the outlets 300; 301, 302, 303, and 304 are connected to the measurement device (smart meter) 20, so that the power supply conditions to the electrical appliances 200; 201, 202, 203, and 204, which are powered from the outlets 300; Observed in real time from the measuring device (smart meter).

As shown in FIG. 5, the power management adapter 200 includes a communication unit 210 that communicates with the energy management device EMS and receives a control command from the energy management device EMS.

The power management adapter 200 includes a first coupling part 211 into which a plug of an electric product is inserted, and a second coupling part 212 coupled to the outlet 300.

The first coupling part 211 and the second coupling part 212 are selectively connected by a switch part 213, and the switch part 213 is a switch driving part 214 operated by the communication part 210. It is operated by.

The switch driver 214 is connected to a timer 215 that calculates and informs the time so that the switch unit 213 can be delayed for a predetermined time.

The power management adapter 200 is provided with a power measuring unit 217 that can measure the power consumption of the connected electrical appliances.

In addition, the power management adapter 200 controls the operation of the switch driver 214, and based on various information received from the communication unit 210, the timer 215, and the power measurement unit 217. The controller 216 may be provided to cut off or supply power to the electrical appliance independently of the energy management apparatus (EMS) 30.

Originally, the power supply and disconnection to each electric product are basically performed by the energy management device (EMS) (see Fig. 3, 30).

By the way, when the user operates the energy management device (EMS) 30 to give the power management adapter 200, the power supply and cut off according to the power consumption and the use time of the electrical product alone, the command, By the operation of the controller 217, the power / supply cut off of the power management adapter 200 may be performed.

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

As shown in FIG. 6, when the user operates the electrical appliance (S601) and the energy management device (EMS) (S602), the energy management mode for reducing the electricity bill and power consumption is activated.

In this state, it is determined whether the current time is in the maximum electric charge section in which the electric charge is imposed maximum per hour (S604).

That is, referring to the graph shown in FIG. 9, it is determined whether the current time belongs to a time interval (approximately 11 am to 3 pm) when the amount of power consumed is maximized and the hourly power rate is maximum.

If it is determined that the electricity rate is the maximum period, it is determined whether the electrical appliances that need to be stopped and delayed operation are set among the electrical appliances that are currently operating within the current time interval or that the power consumption needs to be minimized. (S605).

Usually, the electric appliance is set by the user using the energy management device (EMS).

As a result of the determination, when such electrical appliances are set, the timer of the adapter connected to the electrical appliances set as such is operated (S606).

This is because, in the case of the maximum rate section, since the time period is determined by the notice of the power company, considering the remaining time until the end of this time section, the signal for this is sent to the switch driver when the maximum rate section is over. To send.

The timer is operated, the switch of the adapter connected to the target electrical appliance is operated by the switch drive unit is turned off, and cut off the power supplied to the electrical appliance (S607).

On the other hand, in order to prevent the failure of the electrical product before the off operation for the power supply of the power management adapter, it is preferable that the switching off mode of the electrical product itself.

Thus, the operation of the target electrical appliance is stopped (S608).

However, the steps of S606 to S607 assume that the operation of the electrical appliance is stopped.

When the power consumption is minimized, the power supply through the power management adapter is continued, but the operation of the target electrical appliance is controlled by the energy management device (EMS) (S608).

On the other hand, in the step S605, if the electrical appliance to be controlled in the maximum power bill period is not set, the electrical appliances are operated as initially set by the user (S609).

As shown in FIG. 7, it is determined whether the current time deviates from the maximum power bill interval in the state of going through steps S605 to S608 (S701).

When it is determined that the interval is out of the interval by the signal of the timer, the operation of the timer is first released (S702), and the switch of the power management adapter connected to the set electrical appliance is operated in the on state to supply power to the electrical appliance again. (S703).

For this reason, the electrical appliance is able to return to its original operating state to perform the original function (S704).

On the other hand, the flow in the case where it is determined that the current time does not belong to the maximum power bill interval in step S604 of Figure 6 is as shown in FIG.

That is, the current power consumption is compared with the reference amount set by the user (S801). That is, when the user sets a certain limit in order to use the power intentionally, it is to prevent the excessive use of power by comparing it with the current power consumption.

Here, the power consumption is preferably daily power consumption or hourly power consumption.

In addition, the amount of power is an item that can be replaced by a power rate.

If the current power usage exceeds the set reference amount, first, it is determined whether the operation priority between the electrical products is determined (S802).

In this case, the priority setting is the operation priority according to the usage, such as the refrigerator which should be operated continuously for 24 hours, the air conditioner which is to operate during the daytime of summer, the second priority, the cooker to third priority, and the washing machine to fourth priority. It means ranking.

Such priority can be set by the user using an energy management system (EMS).

If it is determined in step S802 that the priority between the electrical appliances is set, to determine the number of electrical appliances in operation (S803), to determine the operation priority between each electrical appliance and transmits and receives the power information of each electrical appliance (S804).

Then, the operation of the electrical appliances determined as the last priority among the electrical appliances in operation are stopped or power consumption is minimized (S805).

Here, the operation of the electrical appliance is stopped by setting the off state of the electrical appliance and switching the off state of the power management adapter, and minimizing power consumption maintains the on state of the power management adapter and the power consumption during the operation mode of the corresponding electrical appliance. It is made by performing the operation mode which can be minimized.

Then, the user is notified through the visual display or alarm of the energy management device (EMS) that the stop or power consumption minimization operation of the electrical appliance is made (S806).

In this state, it is determined whether the current power usage amount exceeds the set reference amount (S807), and if it is still exceeded, the operation of the immediately higher electrical appliances must be controlled, and the control operation is as described above.

However, if it is determined that the current power usage amount is smaller than the set reference amount, the difference value and the expected power consumption of the highest priority electrical appliances among the electrical appliances in the stationary state or the minimum power consumption mode (S808).

If the former is larger than the latter, it means that there is a margin, so the power is supplied again by the on-operation conversion of the power management adapter connected to the corresponding electric product, and the corresponding electric product is also converted into the on state and resumes the immediately previous operation. Or, it performs the process to convert to the last operating state in the minimum consumption mode (S809).

1 is a schematic diagram of a smart grid.

2 is a schematic diagram of a power supply network system according to the present invention.

3 is a front view of the energy management apparatus according to the present invention.

4 is a control block diagram of a power supply network system according to the present invention.

5 is a schematic diagram of a power management adapter according to the present invention;

6 to 8 are control flowcharts illustrating a control method of the power supply network system of the present invention.

9 is a graph showing the change in the amount of power consumed and the price of electricity over time.

<Description of Main Parts of the Present Invention>

20: measuring device 30: energy management system

34: communication unit 34: control unit

38: input unit 39: display unit

200: power management adapter 210: communication unit

213: switch unit 214: switch drive unit

215: timer 217: power measurement unit

Claims (17)

  An energy management device for controlling the operation of the electrical appliance based on power information of at least one electrical appliance and power information supplied from the outside; A power management adapter connected to a plug of an electrical appliance and coupled to an outlet, the power management adapter communicating with the energy management unit to selectively supply or cut off power to the electrical appliance under control of the energy management unit; Supply network system. The method of claim 1, The power management adapter includes a first coupling unit to which the plug of the electrical appliance is coupled; A second coupling part coupled to the outlet; A switch unit for selectively connecting the first coupling unit and the second coupling unit; And a communication unit and a switch driver for driving the switch unit in response to a control command of the energy management device. The method of claim 2, The power management adapter system further comprises a timer for generating a signal for the switch unit to operate from the on operation to the off operation or vice versa after a predetermined time elapses. The method of claim 2, The power management adapter further comprises a power measurement unit for measuring the amount of power consumption of the connected electrical appliances. The method of claim 1, And a power management communication chip provided in the electrical product and transmitting and receiving power information of the electrical appliance and the energy management device and the power management adapter. The method of claim 2, And the switch unit performs an off operation to prevent a power supply between an external power source and the electrical appliance to prevent standby power generation when an operation stop command is received from the electrical appliance. The method of claim 2, The energy management device includes an input unit for inputting setting information by a user; A display unit for displaying an expected power consumption amount according to real-time power consumption amount and accumulated use information of the electric product; A communication unit configured to communicate with the power measuring device, the plurality of electrical appliances, and communication of the power management adapter; And an input unit, a display unit, a communication unit, and a control unit for controlling an operation and supply of power of the electrical appliance. Determining whether the current time belongs to an electric charge maximum section in which an electric charge is imposed the maximum; If the current time belongs to an electric bill maximum section, determining whether an electrical product is set to delay operation or minimize power consumption within the electric bill maximum section; When a target electrical appliance is set to delay or minimize the operation, the power management adapter or the electrical appliance connected to the electrical appliance is controlled to delay the operation of the target electrical appliance or consume power until the current time exceeds the maximum electric charge interval. The control method of the power supply network system, characterized in that the control to minimize. The method of claim 8, Delaying the operation of the appliance; Operating the timer to set a time that must elapse until the preset electric charge maximum period is set by a timer provided in a power management adapter connected to the set target electric appliance; Operating a switch of the power management adapter to cut off all power including standby power supplied to the set target electrical appliance. 10. The method of claim 9, If it is determined that the current time is out of the maximum power bill period by the time elapsed notification of the timer, Indicating completion of the target electrical appliance operation delay state and releasing the operation of the timer; Operating the switch to supply power to the set electrical appliance. The method of claim 8, If it is determined that the current time is not the maximum charge period, By comparing the current power consumption with the set reference amount, if the current power consumption exceeds the set reference value, the operation priority between the electrical appliances is set according to whether or not to operate in the preset power consumption mode for each electrical appliance or as the last priority of the operation. A control method of a power supply network system, characterized in that to stop the operation of the set electrical appliances or to control the power consumption is minimized. The method of claim 11, If operating priority between electrical appliances is set, Stopping the electrical appliances of the last priority among the electrical appliances in operation is a control method of the power supply network system, characterized in that made by the power supply blocking operation of the power supply adapter connected to the electrical appliances. The method of claim 11, If operating priority between electrical appliances is set, The step of controlling the lowest priority electric appliance among the operating electric appliances in the power consumption mode may minimize the power consumption during the operation mode set for the electric appliance by the energy management device in which the electric appliance controls the electric appliance. A control method of a power supply network system, characterized in that performed by performing the operation mode. The method of claim 11, Comparing the current electric power consumption with a set reference amount in a state where the last priority electric appliance is stopped or in a state of operating a minimum power consumption mode; If it is determined that the current power usage still exceeds the set threshold, the operation of the power supply network system is characterized by stopping the operation of the lowest priority electric appliance among the electric appliances currently operated by the user or operating in the power minimum mode. Control method. The method of claim 11, It is judged that the current power consumption is smaller by comparing the set reference amount with the current power consumption, and the difference between the set reference value and the current power consumption is less than the expected power consumption of the highest priority electrical appliance among the electrical appliances operating in the stopped state or the minimum power consumption mode. If judged to be large, The control method of the power network system, characterized in that for controlling the electrical appliance to return to the previous operation state. The method of claim 15, Restoring a stationary electrical appliance to a previous operating state by a switch operation of the power management adapter. The method of claim 11, If the operating priority between the appliances is not set, The controlling of the electric power consumption mode preset for each electric appliance may include: an operation mode in which each electric appliance may minimize power consumption among operation modes set for each electric appliance by an energy management device controlling the electric appliance. Control method of a power supply network system, characterized in that made by performing.

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