KR101263341B1 - System and method of managing load in building using smart power devices - Google Patents

Abstract

PURPOSE: A system and method for managing a load for a building using a smart power device are provided to prevent an overcurrent by interrupting each outlet device according to a priority. CONSTITUTION: An outlet device(10) measures power consumed in a load and outputs information about instantaneous power and power consumption. A cabinet panel(20) produces quarter and total power consumption. A power control unit(30) monitors the power consumption and state information of the cabinet panel and the outlet device. The power control unit controls the on or off of the outlet device and the cabinet panel. [Reference numerals] (100) Load managing system; (20) Intelligent cabinet panel; (21) Main circuit breaker; (22,EE,FF,GG,HH) Circuit breaker; (23,II,JJ,KK,LL) Switch; (30) Power control unit; (40,DD) Meter; (AA) Commercial power; (BB) Commercial power meter; (CC) New regeneration energy system; (MM) Intelligent socket; (NN) Home appliances; (OO) Refrigerating air conditioner; (PP) Lamp

Description

Load management system and method for building using intelligent power device {SYSTEM AND METHOD OF MANAGING LOAD IN BUILDING USING SMART POWER DEVICES}

The present invention relates to a building load management system and method, and more particularly to a building load management system and method that can efficiently manage the load of a building by using an intelligent power device.

Various load management systems have been proposed for power saving in managing power in buildings. The building load management system is basically to efficiently manage the electric energy consumed in the building to increase the energy saving effect. An example of a conventional building load management system is disclosed in Korean Unexamined Patent Publication No. 2010-0094833.

The power control device disclosed in the above publication generates a first message including a load state sensing module that monitors a state of a load end, and first information about the monitored load end state, and transmits the first message to the manager side, and from the manager side. A communication and control module for receiving a second message corresponding to the first message, the second message including second information for controlling the load end, and the communication and control module based on the second information. It is configured to control. In the above-described prior art, by managing and controlling each load state for air conditioning, electric power, lighting systems, etc. in each building, it is possible to more efficiently save electric energy consumed in the building.

However, the above-described prior art monitors the state of each load stage and simply generates a first message when the value of the current flowing through each load stage is higher or lower than a predetermined value, and based on the generated first message, It only discloses blocking the bottom, but does not provide a practical way to save more effectively the electrical energy consumed in the building.

Republic of Korea Patent Publication No. 2010-0094833 (2010.08.27)

The present invention was derived to provide a method for more efficiently saving the electrical energy consumed in a building, the object of the present invention is for buildings that can efficiently manage the load in the building by using an intelligent power device It is to provide a load management system and method.

In addition, an object of the present invention is to cut off the unnecessary power by blocking each outlet device according to a preset blocking priority based on the total power consumption in the distribution panel and the power consumption for each quarter or each outlet device, By providing a building load management system and method that can improve the efficiency of the electrical energy in the building.

In order to solve the above technical problem, the building load management system according to an aspect of the present invention measures power consumed by a load through a socket, and outputs information and state information on instantaneous power and power consumption through wireless communication. Outlet device; A distribution panel that stores information received from the outlet device in a storage unit and calculates branching and total power consumption to the outlet device; And monitoring power consumption and status information of the outlet device and the distribution panel, controlling the on / off of the outlet device or the distribution panel by identifying the current state of power consumption, and outputting the power trend of the outlet device and the distribution panel through the display device. And a power control unit. Here, the distribution panel controls the on / off of the outlet device in response to a control signal of the power control unit, and when the total power consumption of the distribution panel is greater than or equal to the reference value, the power control unit cuts off at least one outlet device according to the blocking priority of the preset outlet device. do.

In one embodiment, the outlet apparatus comprises: a socket portion connected to a power line from a distribution panel and having a plug insertion hole made of a conductive material; A power consumption measurement unit connected to a power line to measure a voltage and a current flowing through the power line; A power cut-off unit coupled to a power line and cutting off power supplied to the socket unit according to a control signal; And a communication unit receiving power consumption information from the power consumption measuring unit, transmitting a control signal to the power cutoff unit, and wirelessly communicating with the distribution panel.

In one embodiment, the distribution panel includes a communication unit for wireless communication with the outlet device and the power control unit; A storage unit for storing the outlet device state information received from the outlet device and a predetermined outlet device setting current value; An outlet device state monitoring unit for outputting information on power consumption and instantaneous power from the outlet device through a display device; A power amount calculating unit for calculating power consumption of each outlet device and power consumption of the distribution panel; An outlet device ON / OFF control unit for blocking or unblocking the outlet device in response to a control signal from the power control unit; And an auxiliary relay configured to detect an overcurrent and a short circuit of each outlet device, and output a signal for blocking the outlet device to an outlet device ON / OFF control unit when an overcurrent or a short circuit is detected.

The interruption priority of the outlet apparatus corresponds to the order in which the ratio of the excess current amount to the set current amount of each outlet device is large.

A building load management method according to an aspect of the present invention is a method for managing a load of a building in a building load management system having an outlet device, a distribution panel, and a power control unit, the method comprising: receiving power consumption information from each outlet device; Stage 1; A second step of storing power consumption information of each outlet device; Calculating a branch and total power consumption in the distribution panel; A fourth step of determining, by the power control unit, whether the total power consumption of the distribution panel is greater than or equal to the reference value; And a fifth step of, if the total power consumption of the distribution panel is equal to or greater than the reference value, shut off the outlet device by the target value for the reduction of power consumption in order of increasing excess current amount to the set current amount of each outlet device.

In one embodiment, a building load management method includes, after said first step, monitoring the status of each outlet device; Determining whether power consumption of a specific outlet device is within a predetermined range in each outlet device; If the power consumption of the specific outlet device is within a predetermined range, switching from the normal mode to the outing mode; And blocking at least one outlet device that is predetermined according to a preset operation process in the outing mode.

In one embodiment, the load management method for a building further includes detecting an overcurrent and a short circuit of each outlet device by an operation of an auxiliary relay coupled to a distribution panel, and blocking the outlet device when an overcurrent or a short circuit is detected.

According to the present invention, by cutting off each outlet device according to a predetermined interruption priority based on the total power consumption in the distribution panel and the power consumption for each quarter or for each outlet device, the unnecessary power is cut off, thereby It is possible to provide a load management system and method for buildings that can efficiently manage electric energy.

In addition, according to the present invention, by connecting the outlet device, the distribution panel and the power control unit to each other by a wireless communication method, and storing the power information in each outlet device and the distribution panel, it is possible to easily grasp the power and status information of each outlet device and the distribution panel. In addition, it is possible to easily inquire the amount of power consumed for a certain period of time as well as the amount of power currently being consumed, thereby facilitating power savings by inducing non-urgent electricity use at a time when power demand is low.

In addition, according to the present invention, according to the presence or absence of the user of the electrical energy, the power usage instructions divided into the outing mode and the normal mode, etc. are set in advance, and the mode is switched based on the current or power consumption detected by the outlet device. You can prevent unnecessary power consumption by shutting off some outlet devices or by adjusting the time zones for lighting, heating appliances, appliances, etc., according to the current mode's power usage guidelines.

In addition, according to the present invention, by providing a renewable energy system such as a solar generator or a wind generator, in addition to the above-described effects, the surplus power remaining after consuming a part of the power produced in the renewable energy system in the building is sold. To efficiently manage the load on the building.

1 is a schematic block diagram of a building load management system according to an embodiment of the present invention.
FIG. 2 is a schematic block diagram of an outlet device of the building load management system of FIG. 1.
3 is a schematic block diagram of a distribution panel of the building load management system of FIG.
4 is a schematic flowchart of an example of a building load management method employable in the system of FIG. 1.
5 is a schematic flow chart of yet another embodiment of a building load management method employable in the system of FIG.
6 is a graph showing an example of the power consumption consumed during the day in the building.

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

1 is a schematic block diagram of a building load management system according to an embodiment of the present invention.

Referring to FIG. 1, the building load management system 100 according to the present embodiment includes an outlet device 10, a distribution panel 20, and a power control unit 30.

The outlet device 10 measures the power consumed by the load through the socket, and outputs information on the instantaneous power and the power consumption and state information through wireless communication.

The distribution panel 20 stores the information received from the outlet device 10 in the storage unit, and calculates the branching to the outlet device 10 and the total power consumption.

The power control unit 30 monitors power consumption and state information of the outlet device 10 and the distribution panel 20, and grasps the current state of power consumption to turn on or off the outlet device 10 or the distribution panel 20. It controls the power, and outputs the power trend for the power consumption of the outlet device 10 and the distribution panel 20 through the display device.

The above-described distribution panel 20 controls on / off of the outlet device 10 in response to a control signal of the power control unit 30. When the total power consumption of the distribution panel 20 is greater than or equal to the reference value, the power control unit 30 cuts off at least one outlet device according to a preset priority of the outlet device 10. Here, the interruption priority of the outlet device is a ratio indicating how much the current amount has been exceeded with respect to the preset amount of current set for each outlet device 10, that is, the ratio of the set amount of current to the amount of excess current, which is listed as large to small. Corresponds to the order from the larger one.

The electrical energy supplied and used in the building is described as follows.

First, commercial power supplied from a power plant is supplied to a power receiving facility or a distribution panel 100 of a substation in a building. A commercial meter for detecting the amount of power supplied to the building is installed in the building entrance. On the other hand, in addition to the commercial power source can be supplied with electrical energy from the power generation facilities that can supply power to the building. For example, at least eight renewable energy sources (solar, photovoltaic, biomass, wind, small hydro, geothermal, marine, and waste energy) and three new energy sources (fuel cell, coal liquefied gasification, hydrogen energy). Power can be supplied from a renewable energy system using either.

Power supplied to the building is supplied to the distribution panel 20 via a meter 40 installed in the distribution panel inlet. The distribution panel 20 is provided with a main breaker 21 for cutting off the main power line for supplying power, and a plurality of breakers 22 and switches 23 for cutting off the power lines for each branch. The breaker 22 is for manually or automatically cutting off the quarterly power line, and the switch 23 is for controlling the operation of the breaker 22 manually or automatically.

Power supplied to the distribution panel 20 is supplied to the outlet device 10, the refrigeration air conditioning device, the lighting, and the like through the main breaker 21 and the quarterly breaker 22. The outlet device 10 is connected to a predetermined load, for example, a home appliance, to receive electric power from the distribution panel 20 side.

FIG. 2 is a schematic block diagram of an outlet device of the building load management system of FIG. 1.

Referring to FIG. 2, the outlet device 10 according to the present exemplary embodiment includes a socket part 11, a power consumption measuring part 12, a communication part 13, and a power cutoff part 14. The outlet device 10 periodically transmits information such as power consumption, instantaneous power, setting information on a threshold value or a set current value, on / off state information, etc. to the distribution panel 20 or the power control unit 30, and the distribution panel 20. Or according to the control command from the power control unit 30 performs the blocking control of the outlet device and transmits the status information about it to the distribution panel 20 or the power control unit 30.

To describe each component of the outlet device 10 in more detail, the socket portion 11 is connected to the other end of the power line, one end of which is connected to the quarterly breaker 22 of the distribution panel 20, and a plug insertion made of a conductive material. The hole is provided. The socket part 11 has a predetermined housing, and may be inserted into an interior of a building wall or the like or exposed to the building wall.

The power consumption measurer 12 is coupled to a power line connected to the socket 11 and measures the voltage and current flowing through the power line. The power consumption measuring unit 12 calculates power consumption consumed by the outlet device by a load such as a home appliance coupled to the corresponding socket unit 11. The power consumption measuring unit 12 may be implemented to include a voltmeter, an ammeter, a voltage current detector, and a calculator, in which case, the voltage current detector and the calculator are part of a control circuit or a microcomputer or microprocessor using a flip-flop. It may be implemented as a part or some component that performs a function corresponding to this functional part. Here, one control circuit or microcomputer or microprocessor may be coupled to one outlet device or to a plurality of outlet devices depending on the implementation of the device.

The power cut-off unit 14 is coupled to the power line in the form of a switch that electrically separates the power line, and the socket unit 11 in the distribution panel 20 according to the control signal of the power consumption measuring unit 12 or the distribution panel 20 side. Shut off the power supply. As the power cutoff unit 14, a power semiconductor device such as an Insulated Gate Bipolar Mode Transistor (IGBT) or a metal oxide semiconductor field effect transistor (MOSFET) may be used.

The communication unit 13 receives power consumption information received from the power consumption measuring unit 12 and transmits the power consumption information to the distribution panel 20 or the power control unit 30, and a control signal from the distribution panel 20 or the power control unit 30. Received and receives the received control signal to the power cutoff unit 14. The communication unit 13 communicates with the distribution panel 20 only in a wireless communication method, or communicates with the distribution panel 20 and the power control unit 30 in a wireless communication method. The communication unit 13 may be implemented as a short range wireless communication device, especially a device using a Zigbee method. ZigBee is one of the IEEE 802.15.4 standards supporting near field communication, and is a technology for near field communication and ubiquitous computing of about 10M to about 20M in wireless networking fields such as homes and offices. Using ZigBee, power consumption is minimized as compared to other short-range wireless communication methods.

At least some components (voltmeter, ammeter, etc.), the communication unit 13, and the power cut-off unit 14 of the power consumption measuring unit 12 described above may be integrally mounted in the housing of the socket unit 11.

3 is a schematic block diagram of a distribution panel of the building load management system of FIG.

Referring to FIG. 3, the distribution panel 20 according to the present embodiment includes a communication unit 24, an outlet device state storage unit 25, an outlet device state monitoring unit 26, a power consumption calculation unit 27, and an outlet device on. The off control part 28 and the auxiliary relay 29 are provided. The distribution panel 20 stores distribution board information such as branch and total power consumption or cumulative power amount, accident information, status information, and periodically received outlet information 10 in a storage such as a memory, and requests from the power control unit 30. Information is transmitted or the control signal is received from the power control unit 30 transmits the control command to the outlet device (10).

In more detail, each component of the distribution panel 20, the communication unit 24 is a means for communicating with the outlet device 10 and the power control unit 30 in a wireless communication manner or configured to perform a function corresponding to these means. Implemented as negative In one example, the communication unit 24 may be implemented as a communication device of the Zigbee communication method.

The storage unit 25 stores the outlet device status information received from the outlet device 10 and a predetermined outlet device setting current value. The storage 25 corresponds to the outlet device state storage in FIG. 3.

The outlet device state monitoring unit 26 outputs information on power consumption and instantaneous power from the outlet device 10 through the display device.

The outlet device ON / OFF control unit 28 blocks or unblocks the specific outlet device 10 by sending a control command to the outlet device 10 in response to a control signal from the power control unit 30.

The power consumption calculating unit 27 calculates power consumption of each outlet device 10 and power consumption of the distribution panel 20. The power consumption calculator 27 may be implemented as some functional units of the microprocessor or components that perform functions corresponding to the functional units. In this case, the power consumption amount calculating unit 27 has a function of calculating the power consumption amount and performs some functions of the power control unit for performing various functions for controlling each component of the distribution panel, or some components for performing functions corresponding to these functions. It can be implemented as a negative.

In the above-described case, the power control unit (refer to reference numeral 30 of FIG. 1) compares the quarterly power (or power consumption) of the distribution panel based on the total power consumption inquired by the meter 40 to supply the power of a specific branch through the distribution panel. Can manage In addition, the power control unit may cut off the power of the outlet device by the blocking priority when the upper limit of the quarterly power consumption is exceeded by comparing the total power consumption and the quarterly power consumption and setting the quarterly blocking priority. In addition, the power control unit may set the maximum power consumption for each quarter by using the power amount information obtained from the distribution panel 20. In addition, the power control unit may determine the relationship between the total power consumption of the meter and the quarterly power consumption in consideration of the load connection of the home appliances, and set the limit of the quarterly maximum power consumption and the power consumption of the outlet device. In addition, the power control unit may process the power cut off and the alarm sound generation according to the blocking priority by using the intelligent outlet device 10 installed at the power supply end when the maximum power consumption set quarterly is exceeded. In addition, the power control unit may output, for example, the amount of power in units of 10 days for three months through the display device of the distribution panel 20 so as to sense the trend of power consumption. In addition, the power control unit can set the outing mode or the normal mode according to the presence of people in the house to block the unnecessary power consumption to keep the power consumption in the building to a minimum. In addition, the power control unit can quickly cut off power by recognizing a risk factor of an electrical safety accident such as an electric leakage and an overload interruption through a power cutoff unit of the outlet device.

The auxiliary relay 29 detects an overcurrent and a short circuit of each outlet device 10, and outputs a signal for blocking the outlet device 10 to the outlet device on / off control unit 28 when an overcurrent or a short circuit is detected. Using the above-described auxiliary relay 29, in the building load management system, the overcurrent and the leakage of each outlet device 10 is detected by the operation of the auxiliary relay 29 coupled to the distribution panel 20, and the overcurrent or When detecting a short circuit, the corresponding outlet device 10 may be blocked. The overcurrent or leakage detection function for each branch or each outlet device using the auxiliary relay 29 may be applied to a load management method for a building, which will be described later with reference to FIGS. 4 and 5.

4 is a schematic flow chart of one embodiment of a building load management method employable in the system of FIG.

Referring to FIG. 4, in the building load management method according to the present embodiment, in order to efficiently manage the load of a building in a building load management system including an outlet device, a distribution panel, and a power control unit, first, each outlet device is consumed. Power information is received (S41).

Next, power consumption information of each outlet device is stored (S42). Then, the branch and the total power consumption in the distribution panel are calculated (S43).

Next, the power control unit determines whether the total power consumption of the distribution panel is greater than or equal to the reference value (S44). If the total power consumption of the distribution panel is greater than or equal to the reference value, the power control unit blocks the outlet device by the target value for the reduction of the power consumption in the order of the ratio of the excess current amount to the set current amount of each outlet device (S45). Here, the interruption priority of the outlet apparatus corresponds to the order in which the ratio of the excess current amount to the set current amount of each outlet device is large. On the other hand, if the total power consumption of the distribution panel is smaller than the reference value, the current load management processor is terminated. Such a load management processor may be performed periodically or intermittently at a predetermined time.

5 is a schematic flow chart of yet another embodiment of a building load management method employable in the system of FIG.

The building load management method according to the present embodiment may be performed after the first step of the building load management method described above with reference to FIG. 4.

As shown in FIG. 5, after receiving power consumption information from each outlet device (S51), the power control unit monitors the state of each outlet device through the monitoring unit of the distribution panel (S52).

Next, in each outlet device, it is determined whether the power consumption of the specific outlet device is within a predetermined range (S53). If the power consumption of the particular outlet device is within a predetermined range, the power control unit switches the power management mode for the outlet device from the normal mode to the outing mode (S54). Then, at least one outlet device that is predetermined according to a preset operation process in the outing mode is blocked (S55). If the power consumption of the specific outlet device is not within a predetermined range in step S53, the process is performed again under the previous step S52.

On the other hand, in the building load management method of the above-described embodiment, further comprising the step of detecting the overcurrent and leakage of each outlet device by the operation of the auxiliary relay coupled to the distribution panel, and blocking the outlet device when detecting the overcurrent or leakage Can be.

According to the above-described embodiment, when the variable tariff is applied to the hourly rate according to the national policy or the like, the time indicating the maximum load power using the load management system at the individual customer, for example, approximately 24 hours per day in the graph of FIG. By using electric power away from 10 am to 12 am and from 5 pm to 6 pm, we can free up power for the entire nation's reserves, thereby reducing the national budget, such as the construction of power plants. There is an advantage to reduce the cost.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. . It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: outlet device
20: distribution board
30: power control unit
40: Meter
100: building load management system

Claims (7)

In the building load management system,
An outlet device for measuring power consumed by a load through a socket, and outputting information about instantaneous power and power consumption and state information through wireless communication;
A distribution panel that stores information received from the outlet device in a storage unit and calculates branching and total power consumption to the outlet device; And
Monitoring the power consumption and status information of the outlet device and the distribution panel, and control the on and off of the outlet device or the distribution panel by grasping the current state of power consumption, and outputs the power trend of the outlet device and the distribution panel through the display device Power control unit
Including,
The distribution panel controls the on and off of the outlet device in response to the control signal of the power control unit,
When the total power consumption of the distribution panel is greater than or equal to the reference value, the power control unit cuts off at least one outlet device in accordance with the blocking priority of the preset outlet device in the order of the ratio of the excess current amount to the set current amount of the outlet device,
When the power consumption of the outlet device is within a predetermined range, the power control unit switches from the normal mode to the outing mode, and at least one outlet device that is predetermined according to an operation process preset for the outing mode. Building load management system, characterized in that the cut off. The method of claim 1,
The outlet device,
A socket portion connected to a power supply line from the distribution panel and having a plug insertion hole made of a conductive material;
A power consumption measurer connected to the power line to measure voltage and current flowing through the power line;
A power cut-off unit coupled to the power line and cutting off power supplied to the socket unit according to a control signal; And
A communication unit receiving power consumption information from the power consumption measuring unit and transmitting a control signal to the power cutoff unit and wirelessly communicating with the distribution panel
Building load management system comprising a. The method of claim 2,
The distribution panel,
A communication unit for wireless communication with the outlet device and the power control unit;
A storage unit for storing the outlet device state information received from the outlet device and a predetermined outlet device setting current value;
An outlet device state monitoring unit configured to output information on power consumption and instantaneous power from the outlet device through a display device;
A power consumption calculator for calculating power consumption of each outlet device and power consumption of the distribution board;
An outlet device on / off controller configured to block or unblock the outlet device in response to a control signal from the power controller; And
Auxiliary relay for detecting an over current and a short circuit of each outlet device, and outputs a signal for blocking the outlet device to the outlet device on-off control unit when an over current or a short circuit is detected
Building load management system comprising a. delete In the method of managing the load of a building in a building load management system having an outlet device, a distribution panel and a power control unit,
A first step of receiving power consumption information from each outlet device;
A second step of storing power consumption information of each outlet device;
Calculating a branch and total power consumption in the distribution panel;
A fourth step of determining, by the power control unit, whether the total power consumption of the distribution panel is greater than or equal to the reference value; And
A fifth step of shutting off the outlet device based on a target value for the amount of power consumption reduction in order of increasing excess current value with respect to the set current value of each outlet device if the total power consumption of the distribution panel is equal to or greater than a reference value;
Including but not limited to:
After the first step,
Monitoring the status of each outlet device;
Determining whether power consumption of a specific outlet device is within a predetermined range in each outlet device;
If the power consumption of the specific outlet device is within a predetermined range, switching from the normal mode to the outing mode; And
Blocking at least one outlet device that is predetermined according to a predetermined operation process in the outing mode;
The load management method for a building further comprising. delete The method of claim 5,
And detecting an overcurrent and a short circuit of each outlet device by an operation of an auxiliary relay coupled to the distribution panel, and disconnecting the outlet device when an overcurrent or a short circuit is detected.

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