KR101123327B1 - Smart Grid System and Operating method thereof - Google Patents

Abstract

The present invention relates to a smart grid system and a method of operating the same, wherein an energy storage supply device and a renewable energy generating device are connected to each other, and stored energy or generated energy is supplied to a home appliance or energy is supplied to the energy storage supply device according to the charge information. By storing the, it is possible to use the renewable energy generating device stored or generated in the premium rate section, it is possible to reduce the concentration of the general power use in the premium rate section to save energy and easy distribution of energy consumption.

Description

Smart Grid System and Operation Method {Smart Grid System and Operating Method}

The present invention relates to a smart grid system and a method of operating the same, and more particularly, to a smart grid system and a method of operating the same connected to a smart server including the billing information.

Today, many tools are used to make life more comfortable. At home, people use air conditioners for air conditioning, refrigerators for food storage, televisions and radios for entertainment, and computers to make life easier. Most of mechanization is in progress for work.

These various devices, including home appliances, consume electricity as their energy source, and power plants are being built to generate electrical energy.

Recently, the consumption of energy is increasing day by day, the existing thermal resources are being exhausted, not only the interest in the development of new energy is increasing, but also the interest in the saving of energy consumption.

In the summer, when energy consumption is rapidly increasing, a certain amount of energy is produced to meet the demand of electric energy. However, as energy consumption increases, there is a problem in energy supply and demand. However, research is also underway on how to reduce energy consumption in the present situation where the capacity of power plants and the like cannot be increased indefinitely.

Accordingly, by measuring the amount of power consumed in the building, the demand system is applied so that the maximum consumption does not exceed a certain value, or the operation rate of the operating devices is controlled to limit and manage the power consumption. It does not respond.

On the contrary, rather than simply limiting and managing the energy consumed in one home and one building, it is possible to generate energy in accordance with the required amount by organically connecting the places where energy is generated and consumed, such as power plants, through a communication network. As the energy generated and the energy consumed increases or decreases, a method of inducing energy consumption to change is proposed.

Such a system enables energy producing and consuming consumers and their respective devices to be interconnected to transmit and receive data, thereby enabling production and balanced energy consumption corresponding to energy consumption.

The present invention proposes one method for the smart grid system and its operation method for implementing such a system.

SUMMARY OF THE INVENTION An object of the present invention is to provide a smart grid system and a method of operating the same, including home appliances that produce energy, store energy, and selectively use energy in accordance with the received fee information.

Smart grid system according to the present invention comprises at least one home appliance; A smart server for transmitting charge information received from a power management server to the home appliance and managing energy consumption of the home appliance; Renewable energy generating device for generating energy and supplying to the home appliance; And an energy storage supply device for storing energy and supplying the energy to the home appliance. The smart server may be configured to supply energy to the home appliance from at least one of a general power source, the energy storage supply device, and the renewable energy generation device in response to at least one of the fee information and weather information.

In addition, the operation method of the smart grid system of the present invention comprises the steps of receiving charge information from the power management server, the energy storage information of the energy storage supply device; When the rate information is a discount rate period, the connected home appliance is operated through a general power supply, and when the energy stored in the energy storage supply device is less than a predetermined value according to the energy storage information, energy is stored in the energy storage supply device. To be stored; And when the fee information is a premium fee section, when energy stored according to the energy storage information is more than a predetermined value, supplying energy of the energy storage supply device to the home appliance to operate the home appliance. Include.

In addition, receiving charge information from the power management server, and receiving power generation capacity information of the renewable energy generating device; Supplying energy generated by the renewable energy generating device to a home appliance when the power generation capacity of the renewable energy generating device is greater than or equal to a reference value to operate the home appliance; When the power generation capacity of the renewable energy generation device is less than a predetermined value, operating by the home appliance using the renewable energy generation device and a general power source; And when the power generation capacity of the renewable energy generating device is less than a predetermined value and the fee information is a premium fee section, the home appliance performs a power saving operation.

The method may further include receiving at least one of fee information, energy storage capacity, and power generation capacity of a renewable energy generation device from a smart server; When the rate information is a premium rate section according to the received information, at least one of the case when the energy stored in the connected energy storage supply device is insufficient or the generation capacity of the renewable energy generating device is insufficient, setting the power saving operation step; And performing power saving operation by performing at least one of stopping operation for unnecessary functions, changing a reference value for operation, adjusting an illumination, and lowering operation control and driving performance according to priority.

Smart grid system and its operation method according to the present invention configured as described above can be used when the energy is used or when the energy is stored in a short time when the energy is stored, including the storage means for storing energy. In addition, since it can be selectively used in conjunction with the renewable energy generating device for generating energy, the efficiency of energy use is increased, and the energy consumption can be equalized.

1 is a diagram showing the configuration of a smart grid system according to an embodiment of the present invention.
2 is a diagram showing the configuration of a home appliance and a smart server according to an embodiment of the present invention.
3 is a block diagram showing the configuration of the energy storage device and the renewable energy generating device connected to the home appliance and the smart server according to an embodiment of the present invention.
4 is a block diagram showing a control configuration of a home appliance according to the present invention.
5 to 8 are flowcharts referred to for explaining a method of operating a smart server in the smart grid system of the present invention.
9 and 10 are diagrams illustrating an example of energy management by a smart server.
11 and 12 are flowcharts referred to for describing a method of operating a home appliance.
13 and 14 illustrate examples of a power saving operation in a home appliance.

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

1 is a diagram showing the configuration of a smart grid system according to an embodiment of the present invention.

As shown in FIG. 1, the smart grid system includes power generation systems 5 and 7 that generate energy, and where energy is consumed, such as factories 2, homes 3, and enterprises. It includes a building (4), a car charging station (6), and includes a network connecting the energy source and the consumer and a power management server (1) for organically connecting the energy source and the consumer using the network.

The power generation system, which is an energy generator, includes all of the power generation systems that generate energy, not limited to the drawings, such as a thermal power plant (5), a wind or solar or solar power plant (7), a nuclear power plant, and a hydro power plant.

Energy consumers include a plurality of home appliances, plant machinery, plant air conditioners, plant ventilation, elevators, escalators, lighting equipment, building ventilation, building air conditioning, and car charging stations. It may include. All other appliances that use electrical energy are included in the energy consumer.

The network includes a wired network such as LAN, power line network, telephone network, wireless network such as Wireless LAN, Wibro, mobile communication network, HSDPI, as well as communication network using satellite. In this case, the network connecting each element does not need to be unified into one network, and the energy consumers and the producers may be connected to each other through linkage between different pre-installed communication networks. In some cases, the apparatus may further include a device for connection between different communication networks.

The smart grid system connects the energy generating and consuming places through the communication network, so that the energy generating system can predict the energy generation according to the energy consumption pattern and change it accordingly. The consuming side knows the amount of energy being developed and the overall energy consumption pattern accordingly and changes its behavior accordingly.

At this time, the power management server generates charge information whose value is changed according to the energy generation of the power generation system, the energy consumption status of each energy consumer, and the power consumption. In addition, the power management server transmits the generated fee information to each energy consumer.

Each energy consumer receives a fee information from the power management server 1, each including a smart server, and transmits the received fee information to each device including the fee information. Accordingly, each device variably controls the operation in response to the charge information. The smart server may collect power consumption information of the plurality of devices and transmit the power consumption information to the power management server 1.

2 is a diagram showing the configuration of a home appliance and a smart server of the present invention. The home 2 among the energy consumers includes a plurality of home appliances 201 to 209 and a smart server 100 as shown in FIG. 2.

The home appliance includes a washing machine 205, a refrigerator 206, a kimchi refrigerator 207, an outdoor unit 201 and an indoor unit 202 to 204, a ventilator, and a heating device 208, 209. In addition, the home appliance may further include a device that consumes energy, such as an electric oven, an rice cooker, an iron, and a lighting device.

In this case, the plurality of home appliances are connected to a predetermined network and are connected to the smart server 100, respectively. The plurality of home appliances may be integrated and connected through a network and may be separated into different networks in some cases, but are connected to the smart server 100 according to a communication method provided.

The smart server 100 may be provided for each building or each furniture, and in the case of a large building or a factory, a plurality of smart servers may be provided. When a plurality of smart servers are provided, each smart server is connected to a network, and in some cases, any one smart server may be set as a master.

The smart server 100 is connected to the power management server 1 of the smart grid system, transmits and receives information on the amount of power consumption, receives the charge information from the power management server 1, and transmits to a plurality of connected home appliances . The smart server 100 periodically communicates with the power management server 1 and immediately transmits the changed fee information to the home appliance.

The smart server 100 may accumulate and store the driving time of each home appliance according to the section value of each fee information separately, and calculate the power consumption information and the estimated electric fee according to the received fee information. In addition, the smart server 100 transmits information on power consumption for a plurality of home appliances to the power management server (1).

The smart server 100 receives the driving record according to the charge information, the driving time data from the plurality of home appliances, and transmits the data to the plurality of home appliances based on the charge calculation data received from the power management server 1, a preset charge list, and the like. Calculates the amount of power consumed and the corresponding electric charge. The smart server 100 may calculate an estimated electric charge for each of the plurality of home appliances individually and transmit the estimated electric charge to each home appliance.

3 is a block diagram illustrating the configuration of an energy storage device and a renewable energy generation device connected to a home appliance and a smart server. Referring to FIG. 3, the smart server 100 receiving charge information from the power management server is not only connected to the home appliance by a predetermined network, but also connected to the energy storage supply device 130 or the renewable energy generating device 150. do.

In this case, the energy storage supply device 130 or renewable energy generating device 150 will be described as an example provided in the home (2), the energy storage supply device or renewable energy generating device is also provided in a factory or building. Can be.

In addition, in FIG. 3, the energy storage supply device and the renewable energy generation device are both provided, but only one of the energy storage supply device and the renewable energy generation device is provided to be connected to the smart server 100 and the home appliance 200. It may be.

The smart server 100 is connected to the energy storage device 130, renewable energy generating device 150, so that the energy generated from the renewable energy generating device 150 is supplied to the home appliance 200, or The generated energy is stored in the energy storage device 130. In addition, the smart server 100 allows the energy stored in the energy storage device 130 is supplied to the home appliance 200.

That is, the home appliance 200 not only operates by a power supply that is generally supplied, but also uses energy stored in the energy storage supply device 130 or energy generated by the renewable energy generation device 150 in some cases. It works.

For example, when the fee information is a premium fee period, since the fee is expensive when the general power is used, the fee information is operated using energy supplied from the energy storage supply device 130 or the renewable energy generation device 150.

In addition, since the energy stored in the energy storage supply device 130 has a limit, and if the energy is consumed, energy must be stored again. Energy can be stored. In this case, energy storage may be performed in consideration of weather or time depending on the type of energy stored.

In this case, energy accumulation to the energy storage supply device 130 may be performed by the smart server 100 through at least one of the general power source or the renewable energy generation device 150, and in some cases, the home appliance 200 may be Energy may be stored in the energy storage device 130 through an operation for accumulating energy.

The renewable energy generating device 150 generates energy in response to a control command of the smart server 100 or a request of the home appliance 200, and supplies the generated energy to the home appliance 200 or supplies the generated energy to an energy storage supply device ( 130).

In this case, the renewable energy generation device 150 includes energy generation means such as solar heat 151, sunlight 152, wind power 153, and intelligence (not shown).

The energy storage supply device 130 stores the energy generated by the supplied power or the renewable energy generation device 150 and stores the stored energy in response to a control command of the smart server 100 or a request of the home appliance 200. Supply to the home appliance (200).

The energy storage supply device 130 may be stored according to the type of energy, such as the heat storage tank 131, the heat storage cooling tank 132, and the power storage tank 133. In some cases, a control means for energy storage may be separately included, and may further include conversion means for converting and storing energy.

The smart server 100 allows energy to be supplied to the home appliance 200 from at least one of a general power source, an energy storage supply device 130, and a renewable energy generation device 150. The smart server 100 may set differently the energy supplied according to the type of the home appliance 200 and the type of energy source used by the home appliance.

For example, in the case of home appliances using heat, energy is supplied from the heat storage tank 131 or the solar heat 151 to the home appliance 200, and in the case of home appliances using cold air, the cold storage tank 132 may be used. Energy is supplied from the tank 133, the wind power 153, the sunlight 152, etc. to home appliances.

The energy supplied to the home appliance 200 is not only determined by the smart server 100 as described above, but also by the request of the home appliance 200, a general power source, an energy storage supply device 130, and a renewable energy generating device. Energy may be supplied to the home appliance 200 from at least one of the 150.

4 is a block diagram showing a control configuration of a home appliance according to the present invention. Referring to FIG. 4, the home appliance 200 may include a communication unit 210, an input unit 250, an output unit 260, a drive control unit 280, a data unit 270, and a control unit for controlling overall operation of the home appliance. 290).

In this case, each home appliance 200 may further include a separate configuration according to the characteristics of the home appliance, including the above configuration as a basic.

The communication unit 210 includes at least one communication module and transmits and receives data to and from other units such as an outdoor unit or an indoor unit, other home appliances, and also communicates with the smart server 100, and charges information from the smart server 100. Receives, and transmits the operation information for the operation of the air conditioner to the smart server 100. The communication unit 210 connects to the smart server 100 periodically or when a predetermined event occurs to transmit and receive data.

The communication unit 210 includes at least one communication module, and performs a connection test for each communication module to select a communication module suitable for the surrounding network environment, and to the smart server 100 using the selected communication module. Connect.

The communication unit 210 may use a different communication method for communication between the outdoor unit or the indoor unit, and the communication with the smart server 100, and selectively uses a communication module corresponding to the communication method with the target to communicate. In some cases, it may include a converter for data transmission between different communication schemes.

The communication unit 210 includes at least one wireless communication module of a WiFi communication module, a ZigBee communication module, a Wibro communication module, an infrared communication, and a mobile phone communication module. In addition, the communication unit 210 includes at least one wired communication module of a power line communication module, a short-range communication module, a dedicated wired communication module according to a home appliance.

At this time, the communication unit 210 may be built in the indoor unit, or may be connected to the exterior through a separate connection device, it is configured to be detachable in some cases.

The communication unit 210 may be disposed at a place where signal transmission and reception are easy in communication with the smart server 100. For example, the communication unit 210 may be provided on any one side of the upper end of the home appliance. When the communication unit 210 is a detachable type, the user may be provided at a position where the communication unit can be easily detachable.

The input unit 250 includes input means such as at least one switch, a button, a touch pad, and a dial, so that data such as power on / off for operation, operation mode for operation, operation setting according to the operation mode, and schedule Is entered.

The output unit 260 includes at least one output means such as a lamp, a display unit, a speaker, such as an LED, and outputs an operation state of the home appliance. At this time, the operation state of the home appliance, the current operation state, the input setting, whether or not the normal operation, not only the display by the alphanumeric special characters, etc., but also outputs the effect sound or warning sound, operation light or warning light.

In addition, the output unit 260 displays the fare information received through the communication unit 210 in response to the control command of the control unit 290, the operation information of the air conditioner corresponding to the specific fare information, the charge information accordingly Is displayed.

In particular, the display unit displays the operation mode, the information on the operation setting, or the operation state of the home appliance 200, and displays the data received from the smart server 100. In addition, the display unit is calculated by the controller 290 or received by the smart server 100 in response to the charge information or the charge information received from the smart server 100, the estimated power consumption according to the operation setting, or the estimated electric charge Display the operation information.

The display unit is a display means for displaying information in the form of at least one of letters, numbers, images, emoticons, and special characters. The display unit includes a liquid crystal display (LCD), organic light emitting diodes (OLED), and the like, which visually express information. In addition, since the touch pad overlaps the layer structure, the display unit may operate as a touch screen to allow input of information by a user's touch.

The input unit 250 and the output unit 260 may be provided in a front panel, a lower surface, a lower portion, an upper portion, and the like of the home appliance, and the position thereof is not limited to the present description.

The data unit 270 stores setting data for the operation of the home appliance, control data 271 for controlling the operation, and stores data received from another unit such as an outdoor unit or another indoor unit, and records driving according to the charge information. This operation data is stored as 272. In addition, the data unit 270 stores reference data 273 for calculating remaining time, estimated power consumption, and estimated electric charge.

The input / output of data stored in the data unit 270 is controlled by the controller 290. The driving controller 280 performs a predetermined operation according to the setting of the input unit 250 in response to the control command of the controller 290.

For example, the indoor unit performs overall operations such as driving the indoor unit fan, opening and closing the valve, and adjusting the angle of the louver or vane. In the case of the outdoor unit, the operation of the compressor, the fan of the outdoor unit, and the opening and closing of the valve are performed. In addition, in the case of the ventilation device, the operation of the ventilation fan, the strength and the like overall.

The controller 290 generates a control command to operate the home appliance in response to the data input through the input unit 250, and controls the transmission and reception of data and the data input / output of the data unit 270 through the communication unit 210. In addition, the control unit 290 operates according to the setting by applying a control command to the driving control unit 280 according to the setting.

The control unit 290 periodically communicates with the smart server 100 to transmit and receive data on charge information or power consumption to control the operation of the home appliance.

The control unit 290 calculates the time required to reach the desired temperature or the target temperature under the predetermined operation mode or operation setting from the stored data by storing the setting of the home appliance operation and the data measured during operation as the reference data 273. do.

The controller 290 stores the information on the amount of power measured at each driving time as the reference data 273, and calculates the amount of power consumed when driving for a predetermined time in a predetermined operation mode or operation setting based on the recorded information.

In addition, the controller 290 calculates an estimated electric charge according to the operation of the home appliance based on the charge information and the charge table received from the smart server 100.

The control unit 290 outputs the above calculation result through the display unit 261 during operation or completion of operation. That is, for example, the controller 290 displays at least one of the remaining time until the target is reached, the amount of power consumed when the set operation is completed, and the estimated electricity rate when the operation is completed. I can display it. When displaying the estimated power consumption, the current power consumption can be displayed together.

In addition, the controller 290 displays the above calculation results on the display unit 261 as an image or a graph. In this case, the controller 290 may display at least one of a progress bar, a pie graph, a bar graph, a chart, a line graph, and a gauge. In addition, the control unit 290 builds the display form and information on the position at which the calculation result is displayed as design data, and displays the calculation result in any one design according to the selection through the input unit 250.

The controller 290 controls the operation of the home appliance in response to the charge information received through the communication unit 210. The controller 290 performs power saving operation when the fee information is a premium fee section.

At this time, the control unit 290 stops the operation of the function for the unnecessary portion of the set operation, and reduces the energy consumption by reducing the brightness of the screen, the size of the screen of the output unit 260, the predetermined data is displayed.

In addition, the controller 290 may reduce energy consumption by reducing the number of operating fans, the number of rotations of a motor connected to various fans, the operating frequency of a compressor, or the like, or the number of operations of home appliances.

The control unit 290 is connected to at least one of the general power source, the energy storage supply unit 130 and the renewable energy generation unit 150 in response to whether the energy storage supply unit 130 or the renewable energy generation unit 150 is connected. It is supplied with operating power (energy).

In addition, the control unit 290 is a general power source, the energy storage supply unit 130 and the new considering the power generation capacity of the renewable energy generating device 150, the storage capacity of the energy storage supply unit 130, the amount of energy remaining. Energy is supplied from at least one of the renewable energy generators 150.

In this case, the energy supplied to the home appliance 200 may be selectively supplied according to the request of the home appliance 200 as described above, and a predetermined energy source is selected according to the determination of the smart server 100 so that the home appliance 200 Can be supplied.

The controller 290 allows the operating power to be supplied from the energy storage supply device 130 or the renewable energy generating device 150 when the fee information is a premium rate section, and the generation capacity of the renewable energy generating device 150 is a household appliance. When the operating power of equipment is sufficient, it operates by using renewable energy generating device, and when the power generation capacity is insufficient, energy is supplied from general power or energy storage supply device. At this time, if the storage capacity of the energy storage supply device 130 is insufficient to make up for the lack of the general power source.

In addition, if the energy storage operation is required in consideration of the storage capacity of the energy storage supply device 130, the controller 290 allows energy to be stored in the energy storage supply device 130 through the heat storage / cooling / storage operation.

In this case, when the rate information is a discount rate section, the home appliance operates using a general power source, and stores the energy generated by the renewable energy generating device 150 in the energy storage supply device 130. do. In addition, the control unit 290 operates by using the renewable energy generating device 150 and allows energy to be stored in the energy storage supply device 130 by using a general power source.

When the communication unit 210 includes a plurality of communication modules, the control unit 290 tests a connection to the smart server 100 for each of the plurality of communication modules, and any one of the communication modules successfully connected to the smart server. Set as the default communication to send and receive data with the smart server.

In particular, when there is no information on the surrounding network environment in the location where the home appliance is installed, when there is no information on the communication method used by the smart server 100, the control unit 290 is connected to each communication module as described above Testing will determine the surrounding network environment. In this case, when an error occurs in the selected communication module, the control unit 290 tests another communication module to connect to the smart server 100 using another communication module.

The controller 290 is configured to display information about the communication state of the communication unit 210, reception of charge information, operation state of the home appliance, or an event when the information is generated through the display unit 261, with the sound effect or warning sound. Is controlled to be output through the speaker 262.

In addition, when the communication unit 210 operates normally, but the response is not received from the smart server 100 for a predetermined time or more, the controller 290 outputs a warning about a communication state failure through the output unit 260.

5 to 8 are flowcharts referred to for explaining a method of operating a smart server in the smart grid system of the present invention.

5 is a flowchart illustrating a method of operating a smart server when the energy storage supply device 130 is connected to a smart server and a home appliance. Referring to FIG. 5, the smart server 100 receives charge information from the power management server 1 (S310).

The smart server 100 transmits the fee information to at least one home appliance 200 (S315). In addition, the smart server 100 receives and displays the energy storage information of the connected energy storage supply device 130 (S320), and optionally transmits the energy storage information to home appliances. At this time, the energy storage information includes the storage capacity for the remaining capacity of the energy stored for each of the energy storage supply device 130, whether the energy storage operation is necessary, and further information on the time that can be operated with the stored energy. It may include.

The smart server 100 corresponds to the rate information received from the power management server 1, when the rate information is a premium rate section (S325), the energy stored in the energy storage supply device 130 based on the energy storage information It is determined whether or not enough (S330).

When the energy stored in the energy storage device 130 is sufficient, the smart server 100 supplies the energy stored in the energy storage device 130 to the home appliance 200, the home appliance 200 operates with the stored energy. To do (S335). In other words, use the stored energy instead of general power in the premium premium rate section.

The smart server 100 stores the driving record for the operation of the home appliance using the charge information and the energy of the energy storage supply device 130 (S340).

At this time, when there is not enough energy stored in the energy storage supply device 130, the smart server 100 to operate the home appliance 200 by the general power supplied, but to save power (S345). Smart server 100 stores the charge information and the driving record for the power saving operation of the home appliance according to (S340).

On the other hand, if the charge information is determined (S325) is a discounted charge interval, not a premium charge interval (S350), the smart server 100 determines whether the energy stored in the energy storage supply device is insufficient (S355).

When the energy stored in the energy storage supply device is insufficient, the smart server 100 to perform the energy storage operation using the supplied general power (S360). At this time, energy is stored according to the type of energy stored for at least one of the heat storage tank 131, the heat storage cooling tank 132, and the power storage tank 133 of the energy storage supply device 130. It also allows energy to be stored in response to time or weather respectively. For example, the smart server 100 controls the heat storage operation so that energy is stored in the heat storage tank 131 at summer time.

In addition, the smart server 100 is not only the energy storage operation of the energy storage supply device 130, but also to be operated by the general power supplied with the electromotive machine 100 (S365).

At this time, if the rate information is not a premium rate section or a discount rate section, but in the general rate section, separate energy storage operation is not performed and the home appliance is operated by the power supply (S365).

The smart server 100 stores the operation record for the energy storage operation of the energy storage supply device 130 or the operation of the home appliance as described above (S340).

6 is a flowchart illustrating a method of operating a smart server when the energy storage supply device and the renewable energy generation device are connected to the smart server and the home appliance. Referring to FIG. 6A, the smart server 100 receives the charge information from the power management server 1 (S370), transmits the charge information to the home appliance (S375), and stores the energy storage device 130. Receive and display the energy storage information (S380).

The smart server 100 determines whether the renewable energy generating device 150 is connected (S385), and if the renewable energy generating device is not connected (S390), the charge information as shown in FIG. Correspondingly, the home appliance may be operated or energy may be stored in the energy storage device 130.

When the renewable energy generating device 150 is connected, the smart server 100 checks the power generation capacity of the renewable energy generating device, and determines whether or not the household appliance is sufficient capacity to operate (S395).

When the power generation capacity of the renewable energy generating device 150 is a sufficient capacity to drive the home appliance, the smart server 100 determines whether the energy stored in the energy storage supply device is insufficient (S400).

When the energy stored in the energy storage supply device 130 is not short, that is, if the energy is stored enough, the smart server 100 does not perform the energy storage operation without using the renewable energy generating device 150 home appliances To operate (S430). The smart server 100 stores the driving record of the home appliance (S475).

On the other hand, if the storage operation is required for the energy storage supply device 130, it is determined whether the energy storage operation using the renewable energy generating device is possible (S410). That is, it is determined whether energy storage to the energy storage supply device is possible while operating the home appliance with the generation capacity of the renewable energy generating device.

When the energy storage operation using the renewable energy generation device 150 is possible, the smart server 100 allows the home appliance 200 to be operated using the renewable energy generation device 150 (S415), and also renewable energy. The energy storage operation of the energy storage device 130 using the energy generator is performed (S420). At this time, the energy storage supply device 130 performs at least one energy storage operation among the heat storage, the cold storage, and the power storage operation.

Smart server 100 stores the operation record for the home appliance and the energy storage supply device (S475).

In addition, when energy storage operation using the renewable energy generation device 150 is not possible in a state in which energy storage operation is required because energy stored in the energy storage supply device 130 is insufficient, the smart server 100 charges the rate information. It is determined whether or not the section (S425).

If the fee information is not a discount fee section, the smart server 100 allows the home appliance 200 to operate using the energy generated by the renewable energy generating device 150 (S430).

When the rate information is a discount rate section, the smart server 100 allows the home appliance 200 to be operated using energy generated from the renewable energy generating device 150 or the general power supplied (S435), and renewable energy. Energy storage operation is performed by using the energy generated by the energy generating device 150 or the general power source to store energy in the energy storage supplying device 130 (S440).

The smart server stores the driving record according to the home appliance and the energy storage (S475).

On the other hand, when the power generation capacity of the renewable energy generation device 150 is insufficient for the operation of the home appliance (B) (S391), as shown in b of FIG. 6, the smart server 100 determines whether the rate information is a discount rate section. (S445).

When the fee information is a discounted fee section, the smart server 100 determines whether energy stored in the energy storage supply device 130 is not short, that is, whether an energy storage operation is necessary (S450).

If the stored energy is not enough and the energy storage operation is necessary (C) (S392), as shown in a of FIG. 6A, the smart server 100 generates energy generated by the renewable energy generating device 150 or supplied general power. The home appliance 200 is operated by using (S435), and energy is stored in the energy storage supply device 130 by performing an energy storage operation using energy generated by the renewable energy generating device 150 or a general power source. To be stored (S440).

When the energy stored in the energy storage device 130 is sufficient, the smart server 100 allows the home appliance 200 to operate using energy generated by the renewable energy generating device 150 and a general power source (S455). ).

On the other hand, if the rate information is not a discount rate section, the smart server 100 determines whether the energy stored in the energy storage device 130 is sufficient (S460).

When the stored energy is sufficient, the smart server 100 to operate the home appliance 200 by using the energy generated in the renewable energy generating device 150 and the energy stored in the energy storage supply device 130 (S465) .

In addition, when the stored energy is insufficient, the smart server 100 to operate the home appliance 200 by using the energy generated by the renewable energy generating device 150, and a general power source, the home appliance to save power operation (S470).

The smart server 100 stores the driving record of the operation of the home appliance as shown in a of FIG. 6 (D) (S393) (S475).

The driving record thus stored is used to calculate the electricity consumption or the electricity bill of the home appliance. In addition, the smart server 100 transmits power consumption information according to the driving record to the power management server (1).

7 is a flowchart illustrating an operating method of storing energy in an energy storage supply device. Referring to FIG. 7, the smart server 100 receives the charge information from the power management server 1 (S380), transmits the charge information to the home appliance (S385), and stores the energy of the energy storage supply device 130. Receive and display the information (S390).

The smart server 100 determines whether an operation for storing energy in the energy storage device 130 is necessary based on the energy storage information (S500). In this case, information on the type of stored energy may also be transmitted.

When the energy storage operation is required, the smart server 100 transmits energy storage information to the power management server 1, and informs that the energy storage operation is required (S505). The smart server 100 waits for a response from the power management server 1.

When the schedule for the energy storage operation is received from the power management server 1 (S510), the smart server 100 allows the energy storage operation to be performed at the designated time according to the schedule (S515). Smart server 100 stores the operation record for the energy storage operation (S520).

On the other hand, when the schedule information is not received from the power management server 1, after a predetermined time, the energy storage operation is performed in response to the received fee information.

The smart server 100 determines whether or not the discount rate section in response to the rate information (S525), in the case of the discount rate period, the energy storage operation is performed using the general power supplied to save energy in the energy storage supply device To be made (S530).

In addition, when the discount rate period is not, the smart server 100 suspends the energy storage operation and allows the home appliance to be operated in response to the charge information (S535).

Smart server 100 stores the operation record for the energy storage operation, or the operation of the home appliance (S520).

In this case, as described above, the smart server 100 may perform the energy storage operation using the general power source, and may perform the energy storage operation using the general power source as described above. Before and after communicating with the power management server 1 to set a schedule, it is possible to perform the energy storage operation according to the set schedule.

Here, the power management server 1 sets a schedule for the energy storage operation in response to the request of the smart server 100 and transmits the set schedule information to the smart server 100.

The power management server 1 receives a schedule setting request from a plurality of smart servers, and sets different schedules according to the request in consideration of the rate information and transmits them to each smart server 100. In addition, the power management server 1 may be set so that the schedule is different according to the type of energy to be stored.

In other words, the power management server 1 is to perform the energy storage operation in the discount rate section, but if the energy storage operation is concentrated in a certain time period, the charge information is changed, so that the energy storage operation is carried out at a low rate by distributing the energy storage operation. .

When the energy storage operation is performed according to a schedule, the power management server 1 may allow a separate fixed rate to be applied.

8 is a flowchart illustrating an operation control method of a smart server for operation of a home appliance. Referring to FIG. 8, the smart server 100 receives the charge information from the power management server 1 (S540), and transmits the charge information to the home appliance (S545).

The smart server 100 determines whether or not the received fee information is a premium fee section (S550), and allows each home appliance to operate power saving.

In this case, the smart server 100 determines whether the priority information for each home appliance is set when the fee information is a premium fee section (S555). When the priority according to the home appliance is set, the smart server 100 allows the home appliance to be powered up according to the priority (S560).

The smart server 100 allows the high priority home appliances to operate first, and the low priority home appliances stop the operation. In addition, when there are a plurality of home appliances having the same priority, the smart server 100 controls the home appliances of the same priority to be operated alternately or sequentially according to the setting.

If the priority is not set, the smart server 100 allows power saving operation for all home appliances (S570). When the power saving operation is performed in FIGS. 5 to 7 described above, the power saving operation may be performed in consideration of the priority of the home appliance as described above.

On the other hand, when the rate information is not a premium rate period, the smart server 100 to operate the home appliance according to the setting of each home appliance using the general power supplied.

Smart server 100 stores the driving record for each home appliance with the charge information (S565).

9 and 10 are diagrams illustrating an example of energy management by a smart server.

FIG. 9 is a diagram referred to for describing a method of controlling a home appliance to save power by a smart server. Referring to FIG. 9A, the smart server 100 receives the charge information from the power management server 1, controls the operation of the home appliance according to the height of the charge information, and controls the energy storage operation.

At this time, the smart server 100 analyzes the change trend of the fare information, so that the fare information is lowered, that is, set to the discount peak (Off Peak), or the fare information is increased to set the premium rate section (Peak) In each case, the control command is transmitted to operate the home appliance.

As described above with reference to FIG. 8, the power saving operation may be performed in response to the priority of each home appliance, and the operation of the power saving operation for each home appliance may be controlled.

In particular, when the smart server 100 transmits a power saving operation command to a home appliance in a premium rate section, it transmits a specific control command to the home appliance that consumes a lot of energy according to the type of the home appliance to perform a power saving operation. .

For example, as illustrated in b and c of FIG. 9, the smart server 100 may operate only a predetermined inverter pump among a plurality of inverter pumps with respect to the inverter pump, or the operation rate or operating frequency may be changed for each of the inverter pumps in operation. You can control it to change. In other words, the inverter pump operated at 100%, 80%, and 70% operation rate is controlled to operate at 70%, 60%, and 60% operation rate, respectively.

10 is a flowchart referred to for explaining the selection of energy supplied for the operation of the household appliance. Referring to FIG. 10, the smart server 100 controls predetermined selection means 110 provided with respect to energy supplied to the home appliance 200 so that the predetermined energy is supplied to the home appliance to operate the home appliance. .

Smart server 110 is at least one of the general power, renewable energy generating device 150, energy storage supply device 130 to supply energy to the home appliance 200, the renewable energy generating device 150 and energy Each energy source included in the storage supply device 130 is selected to be supplied to the home appliance 200.

That is, the smart server 100 is at least one of the solar heat 151, the solar light 152, the wind power 153 of the renewable energy generating device 150, the heat storage tank 131 of the energy storage supply device 130, Energy is supplied to the home appliance 200 from at least one of the heat storage tank 132 and the power storage tank 133.

At this time, the smart server 100 to supply at least one of the plurality of energy sources as described above in response to the weather, season, rate information at the time of supplying energy to the home appliances, according to each type of home appliances Ensure that the sources of energy supplied are different.

The smart server 100 selects at least one of the plurality of energy sources to be supplied to the home appliance as shown in FIGS. 5 to 8, or uses energy stored in the energy storage supply device, as well as using the selected energy. Ensure that energy is stored in the storage supply.

11 and 12 are flowcharts referred to for describing a method of operating a home appliance.

11 is a flowchart referred to for describing the operation of the home appliance in the smart grid system. Referring to FIG. 11, the home appliance 200 receives an operation mode and an operation setting according to the operation of the home appliance through the input unit 250 (S590). In addition, the home appliance 200 receives charge information from the smart server 100 (S595).

The control unit 290 of the home appliance 200 determines whether the received fee information is a premium fee section (S600), and performs a power saving operation in the case of a premium fee.

In this case, the controller 290 determines whether a predetermined function is set in the home appliance or a priority for each function provided in the home appliance in the premium rate section (S605).

The control unit 290 has a priority set, and in response to the priority of each function of the home appliance, the high priority function is maintained and the low priority function is controlled to stop operation so that the home appliance operates (S610).

In addition, the controller 290 allows the home appliance to power-saving by reducing the decrease of the high priority function and increasing the decrease of the low priority function, that is, by changing the forced control rate according to the priority.

If the priority is not set, the controller 290 saves power regardless of the priority level (S625).

The controller 290 stores and outputs a record of the change in the driving time and the driving setting according to the charge information (S620). The controller 290 may transmit the stored driving record to the smart server 100 connected to the home appliance 200.

On the other hand, if the rate information is a discount rate period rather than a premium rate period (S630), the control unit 290 determines whether the energy storage operation is necessary (S635). The controller 290 may receive the energy storage information for the energy storage device 130 from the smart server 100 through the communication unit 210, and may receive the energy storage device 130 directly from the energy storage device 130 in some cases. .

When the energy storage operation is unnecessary, the control unit 290 operates using the general power supplied according to the input operation setting (S640). In addition, when the energy storage operation is required for the energy storage supply device 130, the control unit 290 performs the energy storage operation corresponding to the type of energy required (S645). For example, when the heat storage operation is required, the heat generated from the home appliance 200 is stored in the heat storage tank 131. In some cases, the energy storage supply device 130 may directly perform an operation for energy storage.

On the other hand, in the general rate section, which is not a premium rate section, but not a discount rate section, the controller 290 operates according to the input operation setting using the supplied general power regardless of the energy storage amount of the energy storage supply device 130. (S650)

The control unit 290 stores the operation information for each operation time according to the operation information, the charge information, and the operation setting for the operation or energy storage operation of the home appliance and outputs it during operation or termination of operation (S620). . In addition, the control unit 290 transmits the driving record to the smart server 100 through the communication unit 210.

At this time, the power saving operation of the home appliance is as follows.

Referring to FIG. 12, when a power saving operation is necessary (S660), the control unit 290 of the home appliance 200 may restrict the activation of a predetermined function or reduce the performance of a function in operation to save power.

As described above, the controller 290 may perform power saving operation by itself, and in some cases, power saving operation according to a control command from the smart server 100.

The control unit 290 changes to the standby mode for a function not in use or cuts power to the corresponding part so as not to operate (S665). For example, when there is no input for a predetermined time, the controller 290 may not display data through the display of the output unit 260 or reduce the area where data is displayed on the display to display the data on a portion of the display. Can be.

In addition, the control unit 290 changes the standard of the standby time during the power saving operation, or adjusts the brightness of the lighting (S670). The controller 290 may change the waiting time of 10 minutes to 5 minutes for the function set to end or stop after the waiting time. In addition, power saving operation can be performed by darkening the brightness of the display unit or the lamp, the brightness of the TV, and the brightness of the lamp. In addition, the elevator in the building can be controlled to be allowed to board only on some floors.

The controller 290 may perform power saving operation by lowering an operation rate or performance with respect to a function in operation (S675). For example, it saves power by controlling the rotation speed of the motor. In the case of an air conditioner, an outdoor fan, an indoor fan, an air suction fan of an indoor unit, and a ventilation device reduce the rotation speed of a ventilation fan. In addition, the controller 290 may control the operation rate of the heat pump, the operation frequency, the operation frequency of the compressor to save power.

In addition, the control unit 290 changes the reference value for the operation control to save power operation (S680).

For example, in the case of an air conditioner or a floor heater, the controller 290 may change the set temperature so that the air conditioner is operated. In the case of the ventilator, a reference value for driving the ventilation fan, that is, a reference value for air pollution is set. You can change the power saving operation. In addition, the washing machine can be operated as a saving course or change the rinsing frequency. In addition, in the case of a home appliance that repeats a predetermined operation periodically, the power saving operation may be performed by changing the time for maintaining the operation in one operation and the waiting time until the next operation.

The control unit 290 may perform at least one of the above-described power saving operation control, or may restrict the operation step by step to save power, and set the priority of each function to perform the power saving operation according to the priority.

In addition, in the case of the air conditioner, the controller 290 may divide the indoor space into a plurality of areas so that the cool air may be discharged only to a predetermined area during the power saving operation. You may. At this time, by setting the priority in the indoor area to control the air to be discharged to the priority area can be a power saving operation.

When the new fee information is received through the communication unit 210 (S685), the controller 290 re-determines whether the power saving operation is performed according to the fee information (S660). To cancel the power saving operation and operate according to the input operation setting (S695).

The control unit 290 stores the operation change according to the setting change information, the operation information, and the charge information for the power saving operation as well as the normal operation, and maintains the operation according to the setting (S690).

13 and 14 illustrate examples of a power saving operation in a home appliance.

As shown in FIG. 13, the home appliance 200 operates a ventilation fan according to the degree of pollution in the air to ventilate indoor air.

In the ventilation system, as shown in FIG. 13A, when the rate information is an off peak, the control unit 290 has a high level (CO2), for example, when the pollution degree of air measured, for example, the concentration of carbon dioxide is higher than the first reference value. High), the indoor air is ventilated by controlling the fan to be operated at a high rotational speed by driving the ventilation fan to the maximum (3 units). In this case, the controller may simultaneously control the number of drives and the rotational speed of the ventilation fan.

When the concentration of carbon dioxide measured as shown in b of FIG. 13 is a middle level below the first reference value and above the second reference value (CO2 Middle), in the discount rate section, the controller 290 drives two ventilation fans to operate indoor air. Ventilate. In addition, when the carbon dioxide concentration is low level (CO2 Low) in the discount rate section as shown in Figure 13c, the control unit 290 drives one ventilation fan according to the setting to ventilate the indoor air.

On the other hand, when the charge information is a premium charge period (Peak), as shown in FIG. 13D, the control unit 290 when the measured pollution degree and carbon dioxide concentration is high level (CO2 High) to drive two ventilation fans to save power operation . At this time, the control unit 290 also saves power by setting the rotational speed of the ventilation fan lower than the preset value. The control unit 290 allows the ventilation fan to operate at a lower level than a preset step during power saving operation.

In addition, as shown in Figure 14, the control unit 290 in the ventilator because the heat of the room is lost due to the ventilation operation, the power saving operation by performing the ventilation operation in consideration of not only the air pollution but also the room temperature.

In the power saving operation, the control unit 290 compares the measured concentration of carbon dioxide with the target concentration to drive the ventilation fan when the target concentration is higher than the target concentration, and does not perform the ventilation operation when the target concentration is lower than the target concentration.

At this time, the control unit 290 operates the ventilation at the maximum level when the carbon dioxide concentration is high level and the room temperature is within the set temperature range as shown in a of FIG. 14. The temperature range set here is similar to or higher than the target temperature and may be changed according to the setting.

On the other hand, when the concentration of carbon dioxide is high level or room temperature is out of the set temperature range, for example, when the target temperature is not reached, the ventilation fan is controlled to operate in an intermediate stage.

As shown in b of FIG. 14, during the power saving operation, the controller 290 operates the ventilation in an intermediate stage when the concentration of carbon dioxide is at the middle level and the room temperature is within the set temperature range. On the other hand, the concentration of carbon dioxide causes the ventilation fan to operate at the lowest level when the middle level or the room temperature is outside the set temperature range.

During power saving operation, as shown in FIG. 14C, the controller 290 operates the ventilation at a low level when the concentration of carbon dioxide is low and the room temperature is within a set temperature range, and the carbon dioxide is low level or indoor. If the temperature is out of the set temperature range, do not operate the ventilation fan.

As described above, the control unit 290 of the ventilator saves power by performing the ventilation operation corresponding to the pollution degree and the room temperature.

Therefore, according to the present invention, the home appliance is operated by selectively supplying energy according to the charge information on the supplied power, the presence or absence of other energy to replace the supplied power, that is, a renewable energy generating device or the degree of stored energy. Energy can be stored for the charge interval, increasing energy consumption efficiency and distributing energy consumption. In addition, it is possible to reduce the energy consumed through individual power saving operation for each home appliance as well as the control of the whole home appliance.

Although the present invention has been described above with reference to the illustrated drawings, the present invention is not limited by the embodiments and drawings disclosed herein, and may be applied within the scope of the technical idea.

1: power management server 100: smart server
130: energy storage supply device 150: renewable energy generating device
200: home appliances
210: communication unit 250: input unit
260: output unit 270: data unit
290: control unit

Claims (19)

At least one home appliance;
An energy storage supply device for storing energy and supplying the energy to the home appliance; And
Sending charge information including the power charge information received from the power management server or a change plan for the power charge to the home appliance,
Managing whether power is consumed by the home appliance, and allowing energy stored in the energy storage supply device to be supplied to the home appliance in response to at least one of the fee information and weather information;
Selecting the type of energy to be stored according to the weather information, and determining whether to store the energy according to the charge information comprises a smart server for storing the energy in the energy storage supply device according to the storage capacity of the energy storage supply device; Smart Grid System. The method of claim 1,
The energy storage supply device includes at least one of a heat storage tank, a cold storage tank and a power storage tank according to the type of energy,
According to the control of the smart server, Smart grid system further comprises a selector for selecting any one of the energy storage device for supplying energy or storing energy to the home appliance. At least one home appliance;
Renewable energy generating device for generating energy and supplying to the home appliance; And
Transmitting the charge information received from the power management server to the home appliance, managing the power consumption of the home appliance, in response to the power generation capacity and the charge information of the renewable energy generating device, the renewable energy generating device in the Smart grid system comprising a smart server for selectively supplying the generated energy or general power to the home appliances. The method of claim 3, wherein
The renewable energy generating device includes at least one of the power generation means of solar, solar and wind power, depending on the type of energy source to use,
And a selector for selecting a type of energy to be supplied to the home appliance according to the control of the smart server from any one of the renewable energy generating devices. At least one home appliance;
Renewable energy generating device for generating energy and supplying to the home appliance;
An energy storage supply device for storing energy and supplying the energy to the home appliance; And
Transmitting charge information received from a power management server to the home appliance, and manages power consumption of the home appliance, in response to at least one of the charge information and weather information, the general power source, the energy storage supply device and the renewable energy A smart grid system comprising a smart server to supply energy to the home appliance from at least one of the energy generating device, and to control the energy storage operation of the energy storage supply device. The method of claim 5
The smart server may include the home appliance from the renewable energy generation device or the energy storage supply device in response to the generation capacity of the renewable energy generation device and the storage capacity of the energy storage supply device when the fee information is a premium fee period. To provide energy to the device,
Smart grid system for stopping the energy storage operation of the energy storage supply device. The method of claim 5
The smart server stores energy in the energy storage supply device using at least one of a general power source and the renewable energy generation device in response to the storage capacity of the energy storage supply device when the fee information is a discounted charge period. Smart grid system to ensure. The method of claim 5
The smart server requests an energy storage operation schedule to the power management server when the storage capacity stored in the energy storage supply device is equal to or lower than a predetermined value, and stores the energy in response to the energy storage operation schedule received from the power management server. Smart grid system that allows energy to be stored in the supply. The method of claim 5
The household electrical appliance is a smart grid system for power saving operation when the charge information is a premium rate period, the generation capacity of the renewable energy generating device or the storage capacity of the energy storage supply device is insufficient. The method of claim 9
The home appliance performs a power saving operation by performing at least one of stopping unnecessary functions, changing a reference value for a predetermined operation, lighting control, operation control according to priority and control of driving performance. The method of claim 9
The household electrical appliance performs an energy storage operation for storing energy in the energy storage supply device in response to the charge information and the storage capacity of the energy storage supply device. Receiving charge information from the power management server and receiving energy storage information of the energy storage supply device;
When the rate information is a discount rate period, the connected home appliance is operated through a general power supply, and when the energy stored in the energy storage supply device is less than a predetermined value according to the energy storage information, energy is stored in the energy storage supply device. To be stored; And
When the rate information is a premium rate section, if the energy stored in the energy storage supply device according to the energy storage information is a predetermined value or more to supply the energy of the energy storage supply device to the home appliance to operate the home appliance Method of operation of a smart grid system comprising a. The method of claim 12,
If the rate information is a premium rate period, if the energy stored according to the energy storage information is less than a reference value, the home appliance operation method further comprising the step of power saving operation. The method of claim 12,
If the stored energy corresponding to the energy storage information is less than the reference value, request the energy storage operation schedule to the power management server,
Receiving a new schedule designated from the power management server to perform the energy storage operation according to the schedule further comprises the operation method of the smart grid system. Receiving charge information from a power management server and receiving power generation capacity information of a renewable energy generating device;
Supplying energy generated by the renewable energy generating device to a home appliance when the power generation capacity of the renewable energy generating device is greater than or equal to a reference value to operate the home appliance;
When the power generation capacity of the renewable energy generation device is less than a predetermined value, operating by the home appliance using the renewable energy generation device and a general power source; And
When the power generation capacity of the renewable energy generating device is less than a predetermined value, and the fee information is a premium fee section, the operation method of the smart grid system comprising the step of saving power. The method of claim 15,
Receiving energy storage information of the energy storage supply device; Further comprising:
According to the energy storage information, if the storage capacity of the energy storage supply device is required to store energy below a certain value, further comprising the step of storing the energy generated in the renewable energy generating device in the energy storage supply device; Operation method of smart grid system. 17. The method of claim 16,
When the rate information is a premium rate section, at least one of the case where the energy stored in the energy storage supply device is insufficient and the generation capacity of the renewable energy generating device is insufficient, and setting the power saving operation,
And performing power saving operation by performing at least one of stopping unnecessary functions, changing a reference value for a predetermined operation, adjusting an illumination, controlling an operation according to priority, and controlling driving performance. The method of claim 17,
In the power saving operation step, the power saving operation is performed step by step in a predetermined order, the operation method of the home appliance, characterized in that for setting the power saving operation setting and the operation record for each setting.
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