KR20110042867A - A network system supplying electric power and a control method thereof - Google Patents

Abstract

PURPOSE: A power supply network system and a control method thereof are provided to reduce electricity bill or power consumption by inducing electric appliances to operate in a power saving mode. CONSTITUTION: A measuring device(20) measures and displays real-time power information through communication with a power source. An energy management device is provided in electrical appliances(101-104) and comprises a control unit(35), an input unit(38) for inputting user setting information, a communication unit(34) for transmitting and receiving power and driving information of the electric appliances, and a display unit(39) for displaying power consumption.

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. More particularly, the present invention relates to an invention capable of saving electric power costs and preventing waste of power consumption by attracting electric appliances to operate in a power saving operation mode.

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.

 SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply network system and a control method thereof, by which an electric product can be operated in a power saving operation mode, thereby saving power charges or power consumption.

In addition, the present invention has another object to actively induce the power saving operation of the user by allowing the user to recognize the electric charge or power or the reduced amount of carbon dioxide saved by the power saving operation mode.

Such the present invention includes 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 or more electrical appliances,

The energy management device provides a power supply network system, characterized in that the user recommends a power saving operation mode that can save power or electric charges than the operation mode when the user sets the operation mode for a predetermined electrical appliance. .

The energy management device is characterized in that when the user sets the operation mode, the estimated power consumption or the electricity bill according to the operation mode is displayed.

When the power saving operation mode is recommended, the energy management device is characterized in that the expected power consumption or power bill or carbon dioxide generation amount is displayed accordingly.

When the user selects the recommended power saving operation mode, and the power saving operation mode is performed accordingly, the energy management device is characterized in that the actual power consumption or power rate or carbon dioxide generation amount is displayed in real time.

After the end of the operation of the target electrical appliance, the energy management device is characterized in that the electric charge or power consumption or carbon dioxide generation amount saved due to the power saving operation mode is displayed.

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

A display unit which displays the power consumption according to the real-time power consumption and the accumulated use information of the electrical appliance;

A communication unit for communicating with the power measuring device and the electric appliance;

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.

The present invention includes the steps of performing the energy management mode by the energy management device for controlling the operation of at least one electrical appliance and displays the power and the electricity bill in real time;

Setting a predetermined electric appliance by a user in a desired operation mode;

Recommending a power saving operation mode capable of saving power consumption or electric charge in response to a user's operation mode setting;

According to a user's selection, the electrical appliance operates in an operation mode set by a user or operates in a power saving operation mode.

When the user sets the operation mode, it characterized in that it further comprises the step of displaying the expected power consumption or power bill or carbon dioxide generation amount.

The method may further include displaying an estimated amount of power consumption or a rate of electricity or carbon dioxide generation according to the recommended power saving operation mode.

The method may further include displaying an actual power consumption amount or a power rate or carbon dioxide generation amount when the power saving operation mode is performed.

When the operation of the electrical appliance operating in the power saving operation mode is terminated, it is characterized in that it further comprises the step of displaying the reduced electricity bill or power, or the reduced amount of carbon dioxide generated.

In addition, according to another aspect of the invention, the step of setting the operation mode for a specific electrical appliance; Displaying an estimated power consumption that is expected to be consumed by a specific electric appliance when the set operation mode is performed; Recommending a predetermined power saving operation mode; Operating a specific electric appliance in a power saving operation mode when the power saving operation mode is selected; Comprising a step of displaying the amount of power or the power savings by comparing the estimated power consumption according to the operation mode initially selected by the user at the end of the operation of the specific electrical appliances operating in the power saving operation mode and the actual power consumption according to the execution of the power saving operation mode It provides a control method of a power supply network system, characterized in that.

The present invention for achieving the above object, despite the operation selected by the user can promote the power saving operation, and can actively inform the saving of the electric bill and power consumption accordingly.

Therefore, there is an advantage that can save the power bill or power consumption by inducing the electric product to operate in the power saving operation mode.

In addition, the present invention has the advantage that the user can actively induce the power saving operation by allowing the user to recognize the electric charge or power or reduced carbon dioxide amount saved by the power saving operation mode.

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, unlike the general communication network, the open architecture 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 the 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.

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.

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 charges, and estimated charges and carbon dioxide generation amount estimated by accumulated history, electricity charges of the current time interval, and electricity of the next time interval. A screen 31 is displayed in which real-time energy information and weather information including a time period in which the rate and the electricity rate change 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.

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.

Meanwhile, energy information for each electric product is displayed at the bottom of the screen 31.

That is, the energy information according to the state set by the user and the energy information according to the power saving operation mode recommended by the energy management device are displayed so that the two energy information can be compared.

The energy information displayed here will be items such as, but not limited to, estimated time required, estimated power consumption, estimated electricity bill, and estimated amount of carbon dioxide generated.

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 52 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 the home, that is, the refrigerator 101, the washing machine or the dryer 102, the air conditioner 103, the cooking apparatus 104, and the like, and the power information thereof. It transmits and receives driving information.

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.

In addition, in the electrical appliance or the control unit 35, data relating to a power saving operation mode of each electrical appliance is stored.

When the user operates a specific electric product, an effect similar to that caused by such operation may be generated, but a power saving operation mode may be recommended and displayed on the display unit 39 so as to reduce an electric charge or power consumption. will be.

The energy management device (EMS) 30 of FIG. 4 assumes a wireless or wired terminal provided separately from the electrical appliances.

However, as shown in Figure 5, such as the refrigerator 101 of the electrical appliance, the energy management device (EMS) 30 is provided in the electrical appliance that must be operated continuously for 24 hours, the control unit 101a of such electrical appliances Separately, the control unit 35, the communication unit 34, the input unit 38, and the display unit 39 of the energy management device (EMS) 30 are provided so that the electric energy management device (EMS) 30 may It is also conceivable for the operation signal and power information to be transmitted and received and processed.

Except for the location of the energy management device (EMS) 30 as described above, since the operation is the same as in FIG. 4, detailed description thereof will be omitted.

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 operated (S603).

Then, the user inputs the operation mode of the specific electrical appliance (S604). That is, in the case of the air conditioner may be the room temperature, in the case of a washing machine, it will be a washing course (standard mode, soaking mode), in the case of a cooking appliance will be cooking time.

When the user inputs the operation mode, the estimated power consumption, electric charge or carbon dioxide generation amount according to the operation mode is displayed on the energy management device (S605).

Thereafter, the energy management device recommends a power saving operation mode that can correspond to the operation mode and displays it (S606).

That is, for example, in the case of an air conditioner, if the indoor temperature set in consideration of the indoor temperature and the outdoor temperature is too low, it is recommended to increase the temperature and increase the air volume of the fan.

In the case of the washing machine, if it is determined that the supply of the washing water or the washing time according to the currently set washing mode is excessive in consideration of the weight of the laundry, it will be recommended in a direction to reduce the washing machine.

After the power saving operation mode is recommended, the amount of power consumption, the electric charge, or the amount of carbon dioxide generated when the recommended power saving operation mode is performed is displayed on the energy management device (S607).

If the user selects the power saving operation mode (S608), and if the user does not select the power saving operation mode, the operation mode originally set by the user is performed (S609).

If the user selects the power saving operation mode, the controller performs this operation (S701), and displays the actual power consumption or power rate or carbon dioxide generation amount in real time according to the energy saving operation mode (S702).

Subsequently, it is determined whether the target electric appliance is terminated (S705), and if the state is terminated, the electric power rate, power, or reduced carbon dioxide amount saved by the power saving operation mode is displayed on the energy management device.

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 control block diagram of another embodiment of a power supply network system according to the present invention.

6 to 7 are control flowcharts illustrating a control method of the power supply network system of the present invention.

<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

Claims (12)

  Including an energy management device for controlling the operation of the electrical appliance based on power information and at least one of the electrical power information supplied from the outside, The energy management device is a power supply network system, characterized in that the user recommends a power saving operation mode that can save power or electricity charges than the operation mode when the user has set the operation mode for a predetermined electrical appliance. The method of claim 1, The energy management device, the power supply network system, characterized in that when the user sets the operation mode, the estimated power consumption or the power bill according to the operation mode. The method of claim 1, When the power saving operation mode is recommended, the energy management device is characterized in that the estimated power consumption, power bill or carbon dioxide generation amount is displayed accordingly. The method of claim 3, When the user selects the recommended power saving operation mode and the power saving operation mode is performed accordingly, the energy management device displays the real power consumption, the electric charge, or the carbon dioxide generation amount in real time accordingly. . The method of claim 4, wherein The power management network system, characterized in that after the end of the operation of the target electrical appliance, the energy management device displays the electricity bill or power consumption or the amount of carbon dioxide generated reduced due to the power saving operation mode. The method of claim 2, The energy management device includes an input unit for inputting setting information by a user; A display unit which displays the power consumption according to the real-time power consumption and the accumulated use information of the electrical appliance; A communication unit for communicating with the power measuring device and the electric appliance; 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. Performing an energy management mode by an energy management device that displays power and electricity charges in real time and controls the operation of at least one or more electrical appliances; Setting a predetermined electric appliance by a user in a desired operation mode; Recommending a power saving operation mode capable of saving power consumption or electric charge in response to a user's operation mode setting; And controlling the electric appliance to operate in an operation mode set by a user or to a power saving operation mode according to a user's selection. The method of claim 7, wherein If the user sets the operation mode, the method of controlling the power supply network system, characterized in that further comprising the step of displaying the expected power consumption or power bill or carbon dioxide generation amount. The method of claim 7, wherein The control method of the power supply network system, characterized in that it further comprises the step of displaying the estimated power consumption or power bill or carbon dioxide generation amount according to the recommended power saving operation mode. The method of claim 7, wherein The control method of the power supply network system, characterized in that further comprising the step of displaying the actual power consumption or power bill or carbon dioxide generation amount when performing the power saving operation mode. The method of claim 10, When the operation of the electrical appliance operating in the power saving operation mode is terminated, the control method of the power supply network system, characterized in that it further comprises the step of displaying the reduced electricity bill or power, or the reduced amount of carbon dioxide generated. Setting an operation mode for a specific electric appliance; Displaying an estimated power consumption that is expected to be consumed by a specific electric appliance when the set operation mode is performed; Recommending a predetermined power saving operation mode; Operating a specific electric appliance in a power saving operation mode when the power saving operation mode is selected; Comprising a step of displaying the amount of power or the power savings by comparing the estimated power consumption according to the operation mode initially selected by the user at the end of the operation of the specific electrical appliances operating in the power saving operation mode and the actual power consumption according to the execution of the power saving operation mode Control method of a power supply network system, characterized in that.

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