KR20110106201A - Intelligent energy management system - Google Patents

Abstract

The present invention relates to an intelligent energy management system capable of supplying power to a load source, that is, a facility such as a street lamp, and reading power consumption in real time. The present invention includes a smart distribution box unit that receives power from a power provider and distributes power to branch lines connected to a load source, and includes a total power consumption supplied from a power provider by communicating with a smart distribution box and power consumption on a branch line. It includes a server that receives information about the use to manage the energy use of the load source, the smart distribution box is a branch circuit control unit including a wiring breaker, a magnetic switch and a smart meter installed on the wiring breaker to obtain the total power consumption It is characterized by including. Therefore, it is possible to know the power consumption per branch line of the distribution box in real time, thereby reducing the power consumption by charging accordingly, and to configure the distribution box economically inexpensively by allowing the branch line control unit to be configured as one module. It can work.

Description

Intelligent Energy Management System {Intelligent Energy Management System}

The present invention relates to an energy supply and management system, and more particularly, to an intelligent energy management system capable of supplying power to a load source, that is, a facility such as a street lamp, and reading power consumption in real time.

In the meter reading of electric power consumption, the remote meter reading is performed instead of the mechanical meter which is read by the conventional visual observation. Even if you do not go to the location of the user's power by remote meter reading, it is possible to obtain information about the user's power usage by using a communication line. This is not the proper method in the field where power usage needs to be known in real time, such as a lamp.

In addition, the current distribution box is a circuit breaker (MCCB, Molded Case Circuit Breaker) connected to the terminal coming from the power supplier in a single-phase two-wire to three-phase four-wire type, as shown in FIG. ELB, Earth Leakage Breaker (ELB), and Magnetic Switch (MC). The distribution box of this configuration currently occupies most of the domestic market, and since the meter is not provided, the power consumption in the distribution box is unknown. Therefore, the standard for setting the electric charge of facilities such as street lights is the situation that charges with the flat rate concept per street lamp number. This causes users to reduce energy consumption by reducing their desire to reduce power consumption.

In addition, even if the electricity meter is installed in the distribution box, if the power consumption can not be measured for each branch line, there is a limit in realizing energy saving because it is not possible to grasp the energy usage form by load source due to overload and leakage caused by aging of the facility. Therefore, there is a need for a method that can measure power usage by load sources as well as total power usage in distribution boxes.

An object of the present invention is to provide an intelligent energy supply / management system for managing the energy usage of the load source by acquiring the total power consumption and the power consumption per branch line to solve the above problems.

In order to achieve the above object, the present invention communicates with the smart distribution unit and the smart distribution unit that receives power from the power supplier and distributes the power for each branch line connected to the load source, in the total power consumption and branch lines supplied from the power supplier. Receiving information on the use of power, including power usage includes a server that manages the energy use of the load source, the smart distribution box is installed on top of the branch line control unit and wiring breaker including a wiring breaker, a magnetic switch and the total power consumption Characterized in that it includes a smart meter to obtain.

In addition, the branch line controller may further include a current sensor for measuring the amount of current in the branch line to calculate the power consumption for each branch line according to the amount of current measured by the current sensor.

In addition, the smart distribution box unit may calculate the power usage for each branch line, and further includes a gateway for wired / wireless communication with the server, may transmit information on the power usage to the server and receive a control command of the server. .

The gate part converts the amount of current acquired by the current sensor into a voltage signal, the sensor part converts the voltage signal into a digital signal, and accepts the digital voltage signal converted by the sensor part, and customizes it and expresses it as current, voltage, and power. It may include a central processing unit and a server, and a communication unit in charge of communication with the smart meter to convert the power consumption.

Preferably, the central processing unit compares the converted power usage with a predetermined limit value, generates a warning to the server when the limit value is exceeded, and transmits an off command to the magnetic switch on the branch line to which the current sensor is connected. have.

The communication unit may include an internal communication unit for communicating with the smart meter, a wiring breaker, and a branch line controller in the smart distribution box, and an external communication unit for communicating with a server. In addition, the communication between the internal communication unit and the smart meter uses the Zigbee communication method, the communication between the internal communication unit, the magnetic switch and the current sensor uses the RS-485 communication method by the UART, and the communication between the external communication unit and the server is the Ethernet communication (RJ). -45) or wireless LAN communication (Wi-Fi) can be used.

In addition, as an embodiment of the present invention, while receiving the power distributed from the smart distribution box supply to the load source, the data control unit for supplying power to the load source and determine and control the state of the load source, the server further comprises The operation of the data controller can be controlled and managed. The data controller may include a charging device having one or more charging sockets.

In addition, the smart distribution box unit may include a display unit for displaying information on power usage, communication status, or power failure information included in the gateway unit.

The smart meter collects a meter current sensor that acquires the amount of current supplied from the power supplier, a pulse generator that generates a pulse signal according to the amount of current obtained from the meter side current sensor, and the generated pulse signal to calculate the total power consumption supplied from the power provider. It may include a meter-side processing device to calculate.

In addition, the smart meter further includes a memory for storing information about the power usage, including the total power consumption and the amount of power per branch line, and a meter side communication unit in charge of communication with the gate way unit, wherein the power consumption per branch line is determined by a gate. The power consumption of each branch line may be received from the way unit.

Information on the power usage transmitted to the server includes the smart meter contract type, identifier information, status information, LP data information, cumulative usage information, monthly data information about power usage, according to the information on the power usage History data management can be performed that utilizes power usage by year, month, day and time.

The server may perform daily / time zone, specific daily, weekly schedule control, and latitude / longitude schedule control.

In addition, the memory unit may store information on power usage as a data table.

Preferably, the meter-side communication unit may communicate with the gateway unit by power line communication, infrared communication, or Zigbee communication.

According to the present invention, by including a smart meter and a current sensor in the smart distribution box can know the power consumption of each branch line of the distribution box in real time, there is an effect that can reduce the power consumption by charging accordingly, branching By allowing the line control unit to be configured as a module, it is possible to construct a distribution box at economical cost.

1 is a schematic diagram of an intelligent energy supply / management system according to an embodiment of the present invention;
2 is a block diagram specifically showing a smart distribution box of FIG.
3 is a block diagram specifically illustrating a configuration of a gate way part of FIG. 2;
4 is a block diagram specifically showing the smart meter of FIG. 2, and
5 is a block diagram showing the configuration of a conventional distribution box.

Hereinafter, the same reference numerals will be described in detail with reference to the accompanying drawings, with reference to the same components preferred embodiments of the present invention. The terms or words used in the specification and claims are not to be construed as being limited to conventional or dictionary meanings, but should be construed as meanings and concepts corresponding to the technical matters of the present invention.

1 is a schematic diagram showing an intelligent energy supply / management system according to an embodiment of the present invention. Referring to FIG. 1, the intelligent energy supply / management system 1 includes a smart distribution box 100 and a server 200.

The smart distribution box unit 100 is an intelligent distribution box that receives power from a power supplier and distributes power for each branch line connected to a load source. The load source includes streetlights 320 and various facilities operated by electricity. In addition, the smart distribution unit 100 obtains information on the power usage from the load source. The power usage information includes total power usage and branch line power usage information supplied to the entire distribution box and used at the load source.

The server 200 communicates with the smart distribution box unit 100 to receive information on the power usage including the total power usage supplied from the power provider and the power usage on the branch line to manage the energy usage of the load source.

The server 200 may be included in either the power provider side or the power user side managing the load source, or may be included in both sides to interlock and perform energy supply and management for the load source. On the part of the power provider, statistics on the user's power usage can be used to make more detailed plans for the power supply, and the power user can also make detailed plans to reduce the cost of using the power.

The intelligent energy supply / management system 1 may further include a data controller 300. The data controller 300 receives the power distributed from the smart distribution box unit 100, supplies the power to the load source, and determines and controls the state of the load source. The server 200 controls and manages the operation of the data controller 300.

Also, preferably, the data controller 300 may include a charging device 310 having one or more charging sockets. An electric vehicle, an electric bicycle, and the like, which are movable by electricity, may be directly connected to the data controller 300 to receive the necessary electricity.

Specifically, the energy management of the server 200, the server 200 utilizes the information on the power usage received from the smart distribution box 100, intelligent schedule control, intelligent group control, automatic control according to the threshold setting, Send alarm message and manage history data. In addition, by assigning an identifier to the smart distribution box 100 and the data control unit 300 can be managed separately, the identifier using the Internet Protocol (IP, Internet Protocol) or by setting a separate ID (ID, Identification) It is available. Therefore, the smart distribution box 100 and the data control unit 300 may be individually operated by an identifier, and may operate independently of the master / slave structure.

The communication between the server 200 and the smart distribution box 100 may use wired / wireless communication. The wired communication may be configured as a wired LAN using Ethernet, and the wireless communication may be configured as a wireless LAN using Wi-Fi.

The power usage control of the server 200 may be controlled according to a schedule, and may be controlled by setting a schedule for each day or time zone. The time zone can be set up to minutes. The schedule can be controlled by setting a specific day or week. It may also include a schedule control function according to latitude / longitude.

In addition, the server 200 may set a threshold for power use and transmit a warning message when the threshold is exceeded. And it can control sequentially by giving priority to load source.

In addition, history data management can be performed. Statistics on power usage can be calculated annually, monthly, daily and time of day. Statistics can be used to plan future energy operations.

2 is a block diagram showing in detail the configuration of the smart distribution box 100 of FIG. Referring to FIG. 2, the smart distribution box unit 100 may include a circuit breaker 120, a branch line controller 140, a smart meter 160, and a gateway 180.

The molded case circuit breaker (MCCB) 120 is a device that automatically cuts off a current when a current exceeding a rated current flows and prevents overload, thereby turning on / off the power according to the allowable capacity of the current in the distribution box. To prevent damage to the circuitry involved in the energy use device. In the case of single-phase two-wire, rated current of 30 A or 50 A may be used, and in the case of three-phase four-wire, 100 A rated current.

The branch line controller 140 includes a magnetic switch 142. Magnetic switch (MC, Magnetic Contactor) (142) is a magnetic contactor of the relay concept of opening and closing the contact by using the magnetic force generated in the coil. It is installed at the bottom of the earth leakage breaker to open / close the branch line by receiving the on / off command of the branch line.

The branch line controller 140 may further include a current sensor 144 that measures the amount of current in the branch line. Current sensor (CT) 144 is a sensor for measuring the current value of the line to generate a voltage signal proportional to the current, and measures the current capacity of each branch line and transmits it to the gate way unit 180. The current capacity of the line is the power consumption of the load source connected to the branch line. Therefore, the smart meter 160 may hold information on power usage for each branch line by the current sensor 144 and information on the total power usage in the smart distribution unit 100. The branch line controller 140 typically includes an earth leakage breaker 146. Therefore, the branch line control unit 140 may be manufactured as an integrated unit module including the earth leakage breaker 120, the magnetic switch 142, and the current sensor 144, thereby narrowing the mounting place and improving the spatial installation place. Since the power consumption of each branch line can be measured by RS-485 communication through the gateway unit 180 using only the current sensor 144 without using the communication terminal device of the economical effect can be achieved. The integrated unit module may further include a circuit breaker 120.

Electric Leakage Breaker (ELB) 146 is a device to automatically cut off the leakage current when an overload or short circuit occurs or a short circuit occurs. To prevent damage to the circuitry contained in the energy use device. It is installed at each branch line at the lower end of the circuit breaker 120 to automatically cut off when a short circuit occurs to protect the data control unit 300 and the load source installed in the corresponding line. The operating sensitivity current is preferably 25 mA.

The smart distribution box unit 100 includes a gateway unit 180, which calculates power usage for each branch line and is responsible for wired / wireless communication with the server 200. In addition, the smart distribution box unit 100 transmits information on the power usage to the server through the gateway unit 180 and receives a control command of the server 200.

3 illustrates a detailed configuration of the gate way unit 180 of FIG. 2. Referring to FIG. 3, the gateway unit 180 is a main communication device of the smart distribution box unit 100 including a sensor unit 182, a central processing unit 184, and a communication unit 186.

The sensor unit 182 changes the amount of current acquired by the current sensor 144 into a voltage signal, and converts the voltage signal into a digital signal.

The CPU 184 receives the digital voltage signal converted by the sensor unit 182 and converts the digital voltage signal into power consumption expressed by current, voltage, and power through customization. Therefore, it is possible to calculate the power consumption per branch line.

In addition, when the cable resistance of the branch line, the aging of the load source, and the short circuit occur, the power used in the branch line may fluctuate rapidly.At this time, the power consumption of the branch line is measured to improve the power consumption, trouble diagnosis and Maintenance can be improved. For example, if a load source uses 100W and 10 load sources are installed on one branch line, the branch line will typically have 1000W of power consumption. However, when the failure of some load sources can not maintain 1000W, it is possible to diagnose the failure of the branch line by measuring the power consumption of the branch line directly.

The communication unit 186 is in charge of communication with the smart meter 160. The internal communication unit 188 in charge of communication with the smart meter 160, the wiring breaker 120, and the branch line controller 140 in the smart distribution box unit 100, and the external communication unit 189 in charge of communication with the server 200. ) May be included.

Here, the internal communication unit 188 may use the Zigbee communication method with the smart meter 160, and may be provided with a universal asynchronous receiver / transmitter (UART) to communicate with the magnetic switch in the RS-485 method. have. The external communication unit 189 may use an Ethernet communication (RJ-45) or a wireless LAN (Wifi) communication method with the server 200.

In addition, the gateway unit 180 may include a power backup battery 190, and transmit power failure information to the central processing unit 184 by using the battery 190 at the time of power failure. The CPU 184 may transmit the power failure information to the display unit 195 and output the information to the display screen. The display unit 195 may be configured as an LCD display, and communication between the display unit 195 and the central processing unit 184 may use Zigbee communication.

The communication unit 186 includes a Zigbee Cordinator (ZC) 185. The ZC 185 receives data on the ZD 115 included in the display unit 110 when the ZD (Zigbee Device) 165 included in the smart meter and the smart distribution box unit 100 include the display unit 110. Device. The ZC 185 may perform an Ethernet communication using an external Internet network and an RJ-45 or a WLAN communication using a Wi-Fi module.

Wi-Fi is a wireless LAN communication that performs an IEEE 802.11b / g wireless access point (AP) function. SSID (Service Set Identifier) can be set, wireless channel setting, wireless operation mode setting, data encryption function, and set information can be checked. In addition, there is a function to select a wireless LAN connection, a fixed IP (Internet Protocol) and a dynamic IP to connect to the network, and may also have a DHCP (Dynamic Host Configuration Protocol) server function.

As a preferred embodiment of the present invention, the central processing unit 184 compares the power usage with a predetermined threshold and generates a warning to the server 200 when the threshold is exceeded and the branch line to which the current sensor 144 is connected. The magnetic switch 142 on the top may issue an OFF command.

The smart meter 160 reads real-time power usage. The information about the total power consumption for all the load sources that are built in the smart distribution box unit 100 and connected to the smart distribution box 100 is obtained. In addition, it is possible to acquire current time information, status information, previous month data on the power consumption, and current data.

The power usage metered by the smart meter 160 is made of a distribution box unit, the power consumption may be metered in units of 15 minutes.

The smart meter 160 transmits the information obtained by communicating with the server 200. The communication with the server 200 may be made in various ways such as Internet network or power line communication using Ethernet.

The smart meter 160 may perform Zigbee communication or power line communication with the gate way unit 180. In the case of Zigbee communication with the gateway 180, a Zigbee device (ZD) includes a Zigbee device (165), and the gateway 180 includes a Zigbee coordinator (ZC) to transmit and receive data. can do. In this case ZD 165 is the logical slave concept of Zigbee communication and ZC 185 is the logical master concept.

The smart distribution box unit 100 may install the smart meter 160 to read power usage in real time, and inquire energy of the meter data to efficiently save energy by efficiently operating energy. In addition, power usage metering may be performed for each line. Power usage is related to the amount of current in the load source, leakage current, and the like. By reading the power usage, it is possible to monitor the status of the load source and use the status information to control the energy supply of the load source.

Since the load source is connected to the data controller 300, monitoring and control for each load source may be achieved by monitoring and controlling the data controller.

It is possible to set a threshold of predetermined power usage for each branch line, and to start / stop supply of power according to the set threshold of predetermined power usage. When the power usage exceeds the predetermined power usage, the power supply may be stopped.

4 is a block diagram showing in detail the configuration of the smart meter 160 of FIG. Referring to FIG. 4, the smart meter 160 includes a meter side current sensor 162, a pulse generator 164, and a meter side processing device 166.

The meter-side current sensor 162 acquires the amount of current supplied from the power supplier, the pulse generator 164 generates a pulse signal according to the amount of current obtained by the meter-side current sensor 162, the meter-side processing apparatus 166 calculates the total amount of power supplied from the power provider by collecting the pulse signal generated by the pulse generator 164.

The smart meter 160 further includes a memory 167 for storing information on power usage including the total power usage and the amount of power for each branch line, and a meter side communication unit 168 in charge of communication with the gateway unit 180. can do. Power consumption per branch line may be received from the gateway 180.

The information on the power usage includes the contract type, identifier information, status information, LP data information on the power usage, cumulative usage information, monthly data information of the smart meter 160, the server 200 according to the information on the power usage ) Can perform historical data management utilizing power usage by year / month / day / time.

In addition, the server 200 may perform daily / time zone, specific day, weekly schedule control, and latitude / longitude schedule control.

The memory 167 may store information about the power usage as a database table. Therefore, the server 200 may easily and quickly inquire about future power usage based on the data stored in the memory 167 of the smart meter 160. For example, if 15 minutes of LP data is 1 hour, 4 data, and 24 hours of daily data is stored in a separate daily database table, the next day data query does not need to add the LP data value separately by date There is an advantage that you can receive data immediately by only searching the stored database table. Database tables are available daily, monthly, and yearly. Items that take time to calculate can be stored as separate database tables. In addition, it is limited to the memory 167 to store 90 days of data and data over 90 days can be stored sequentially by deleting the previous data from the previous data, the memory 167 from the moment it is connected to the server 200 You can store huge amounts of data regardless.

Inquiry about the current power usage meter reading displays the cumulative power consumption at the present time in the data configured in such a manner that the current month meter reading data is subtracted based on the current accumulated meter reading data. After that, the data requested by the current meter reading should be subtracted from the previous month's data when the meter reading date has not elapsed, and the hourly power usage is the amount of electricity used between (for example, from 2 o'clock to 3 o'clock) (the cumulative power at 3 o'clock). Consumption-previous month data)-(cumulative power consumption at 2 o'clock-previous month data).

The meter-side communication unit 168 may communicate with the gateway 180 through power line communication, infrared communication, or Zigbee communication.

Although the preferred embodiments of the present invention have been shown and described, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention, and is generally used in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications are possible by those skilled in the art. In addition, matters that can be easily inferred from the appended drawings should be regarded as included in the content of the present invention even if they are not described in the detailed description, and various modifications will be separately understood from the technical spirit or the prospect of the present invention. Will not be.

100: smart distribution box
200: server
300: data controller
120: wiring breaker
144: current sensor
160: smart meter
180: gate way part

Claims (18)

Smart distribution box unit for receiving power from the power supplier to distribute the power to each branch line connected to the load source; And
And a server configured to communicate with the smart distribution box to receive information on power usage, including total power usage received from the power provider and power usage on the branch line, and to manage energy usage of the load source.
The smart distribution box is a circuit breaker; A branch line control unit including a magnetic switch; And a smart meter installed at an upper end of the wiring breaker to obtain the total power consumption.
The method of claim 1, wherein the branch line control unit
Intelligent current supply / management system further comprises a current sensor for measuring the current amount of the branch line, and calculates the power consumption for each branch line according to the amount of current measured by the current sensor.
The method of claim 2, wherein the smart distribution box unit
The apparatus further includes a gateway configured to calculate power usage for each branch line and perform wire / wireless communication with the server, to transmit information about the power usage to the server and to receive a control command of the server. Intelligent energy supply / management system.
The method of claim 3, wherein the gate way portion
A sensor unit converting the amount of current acquired by the current sensor into a voltage signal and converting the voltage signal into a digital signal;
A central processing unit which receives the digital voltage signal converted by the sensor unit and converts the digital voltage signal into power consumption expressed by current, voltage, and power through customization; And
Intelligent energy supply / management system comprising a; communication unit in charge of communication with the server, the smart meter.
The magnetic switch of claim 4, wherein the central processing unit compares the converted power consumption with a predetermined threshold and generates a warning to the server when the threshold is exceeded, and the magnetic switch on the branch line to which the current sensor is connected. Intelligent energy supply / management system, characterized by transmitting an off command. The method of claim 4, wherein the communication unit
An internal communication unit in charge of communication with the smart meter, the wiring breaker, and the branch line control unit in the smart distribution box unit;
Intelligent energy supply / management system comprising a; external communication unit in charge of communication with the server.
The intelligent energy supply / management system of claim 6, wherein the communication between the internal communication unit and the smart meter is Zigbee communication.
The intelligent energy supply / management system according to claim 6, wherein the communication between the internal communication unit, the magnetic switch, and the current sensor is based on RS-485 communication by UART.
The intelligent energy supply / management system according to claim 6, wherein the communication between the external communication unit and the server is Ethernet communication (RJ-45) or wireless LAN communication (Wi-Fi). The method according to claim 1 or 2,
Receiving the power distributed from the smart distribution box unit, and supplying to the load source, supplying power to the load source, and further comprising a data control unit for determining and controlling the state of the load source,
The server is an intelligent energy supply / management system, characterized in that for controlling and managing the operation of the data control unit.
The method of claim 10,
The data control unit is intelligent energy supply / management system, characterized in that it comprises a charging device having one or more charging sockets.
10. The method of claim 6, wherein the smart distribution box is
Intelligent energy supply / management system characterized in that it further comprises a display unit for displaying information on the power usage, communication status, power failure information, etc. included in the gateway.

The method of claim 3, wherein the smart meter
A meter side current sensor for acquiring an amount of current supplied from the power supplier;
A pulse generator for generating a pulse signal according to the amount of current acquired by the meter side current sensor; And
And a meter-side processing device that collects the generated pulse signal and calculates a total power usage supplied from the power provider.
The method of claim 13, wherein the smart meter is
A memory for storing information on power usage including the total power usage and the amount of power per branch line; And
And a meter-side communication unit in charge of communicating with the gateway unit, wherein the power consumption for each branch line is received from the gate unit by the power consumption for each branch line.
15. The method of claim 14, wherein the power usage information includes contract type of the smart meter, identifier information, status information, LP data information on the power usage, cumulative usage information, monthly data information, According to the information on the server intelligent energy management system, characterized in that for performing historical data management utilizing power usage by year / month / day / time zone.
The intelligent energy management system of claim 15, wherein the server performs schedule control and latitude / longitude schedule control by day / time zone, specific day, and weekly.
17. The intelligent energy management system according to any one of claims 14 to 16, wherein the memory unit stores information on the power usage as a data table.
15. The intelligent energy supply / management system as claimed in claim 14, wherein a meter-side communication unit communicates with the gateway unit by power line communication, infrared communication, or Zigbee communication.

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