KR101433046B1 - Smart switchgear installed standby-power energy-saving controller equipped with multichannel load current sensitivity and timer trip function - Google Patents

Abstract

The present invention relates to a smart distribution board equipped with a standby-power saving controller having a multichannel load current sensitivity and timer blocking function and a method of blocking standby power. The smart distribution board includes a distribution unit including a distribution circuit breaker for a main circuit, a bus bar, a distribution circuit breaker for a branch circuit, a leakage circuit breaker, a current transformer for separation to measure a current consumed in a load device receiving low pressure power by phase, an electronic contactor to block or restore power of the load device, and a power cable to supply power to a load device requiring three phase or single phase low pressure power; and a standby power saving controller to provide power monitoring information based on the measured load current of each phase using the current transformer for separation, and to control the electronic contactor installed at a load device side using an output contact point according to the measured current upon the standby power and blocking and restoring time of a preset load device power in order to automatically block and restore power of the load device.

Description

[0001] The present invention relates to a smart switchgear installed in a standby power-saving controller having multi-channel load current detection and timer blocking function,

The present invention relates to an A / D converter for converting power from a power transformer (TR) installed in a large-capacity power supplier or directly receiving low-voltage (380 / 220V) power from a power source and supplying the same to a load facility. More particularly, By incorporating an energy-saving controller with current sensing and timer shutdown function, the power used in the power receiver load facility can be measured and measured by each of the branch circuits (R, S, T) It provides information in real time so that the user can directly check the amount of power to be used by monitoring. By using the load current value measured for each phase of the branching circuit, when the standby power cutoff function is executed, And the standby power that is unnecessarily consumed is automatically cut off by controlling the magnetic contactor, Channel load current detection and timer blocking function that can realize energy saving and electricity rate reduction by automatically shutting off the power of the load facility by controlling the electromagnetic contactor by scheduling by time when the channel timer setting and blocking function is executed And a smart switchboard with built-in standby power saving control device.

The factors of uneasiness caused by domestic and foreign energy such as increase of electric power demand during summer and winter peak due to global warming phenomenon, frequent breakdown of old power generation facilities and interruption of operation of nuclear power plant due to corruption are becoming increasingly insufficient. The increase in spending, weaker corporate competitiveness, and a decline in sales.

In addition, as there is a characteristic that electric energy can not be used by storing a large amount of electricity once produced, studies on Smart Grid, Energy Storage System, As a result, we are now in the forefront of commercialization and diffusion.

In addition, in many power consumers, energy and electricity charges are rising due to stand-by power, which is unnecessary consumption of electricity unnoticed by the user regardless of the operation of the used equipment. The '2011 Korea Standby Power Survey' reported that the proportion of standby power consumed by household appliances and the loss due to such standby power were about 618 MW (megawatt) per year and about 420 billion won.

In order to prevent such standby power consumption, the electric power receiver has a separate outlet for connecting the power plug of the electric appliance or an ON / OFF switch for interrupting the main power to the multi-tap, Standby power is cut off by equipped with a load sensing type, a rough detection type, a timer type, and a hybrid type standby power cutoff device tested and specified in accordance with a standby power reduction program operation regulation and a method of minimizing power loss by turning off the / OFF switch Remote control type that cut off the standby power of the outlet by the wired / wireless communication such as the remote controller or the smart type which automatically detects the presence of the user in the room, , A network-type standby power cut-off system that simultaneously blocks the standby power of the entire house or building Patent applications have been filed but have not yet become widespread due to installation, use and cost problems.

The method of manually operating the standby power cut-off receptacle or the multi-tab ON / OFF switch which is widely used nowadays is as troublesome as if the power plug of the electric product is directly pulled out, The LEDs attached to the power strips may cause the adverse effect of increasing the standby power but the space occupied by the volume and size of the devices increases when many standby power cutoff devices approved by the Korea Energy Management Corporation are installed , There is a disadvantage in that it is cumbersome and costly to maintain a plurality of devices at various places.

On the other hand, in relation to the conventional technique for blocking the standby power loss, a number of applications and registrations are registered in addition to the Korean Patent No. 10-0998930 (hereinafter referred to as "the prior art").

The above-mentioned prior art document is limited to a power supply device that supplies power to a household call in a switchboard installed in a multi-family house and includes a transformer, a differential input unit, a load current transformer, a matrix unit, a wiring breaker, a main control unit, Phase balanced distribution board, and a household distribution board, the fixed copper distribution board, the phase balance distribution board and the household distribution board including a current transformer; A differential input unit for receiving a power supply line from a transformer low-voltage terminal block in the distribution board and outputting the branched power supply line to the switchboard matrix unit; The output line output from the switchboard matrix unit is input to the fixed copper distribution board and the wiring breaker wired to the phase distribution board via the wiring breaker; Wherein the fixed copper distribution board supplies power to the household power line by generation line via the current transformer, The phase equilibrating distribution board supplies power to a household arc through a current transformer and a distribution board matrix unit, and the uppermost generation arc supplies power to the uppermost layer through a current transformer and a generation arc matrix unit. The matrix unit includes an input power supply line and an output power supply line which form an XY matrix circuit in the matrix unit, and a matrix unit which is wired with a magnetic switch between the matrix cells and can selectively conduct an input power supply line and an output power supply line with a magnetic switch. A distribution board matrix unit provided in the distribution board, and a generation call matrix unit provided in the household distribution board installed in the uppermost layer and the uppermost layer generation gap; The main control unit is composed of a microprocessor and is included in a switchboard matrix unit, a distribution board matrix unit, and a generation arc matrix unit as a main control unit that constitutes a wiring circuit by turning on / off a magnetic switch according to an instruction input from a control server. The control server receives the current amount information of the load current transformer and connects the magnetic switch to the ON contact point so that the phase unbalance is less than 1% If the phase imbalance does not become 1% or less, the input power line and the output power line are connected to the magnetic switch by the ON contacts so that the phase unbalance in the secondary distribution board matrix unit becomes 1% or less; The control server for connecting and disconnecting the input power line and the output power line with the magnetic switch to the ON contact so that the phase imbalance in the third generation call matrix unit is 1% or less if the phase imbalance is not 1% or less; The control server receives the power consumption from the current transformer in the household distribution panel, converts the power consumption into carbon dioxide emission, and classifies the household call by the power use order, and transmits the carbon dioxide usage amount, the power use ranking and the current unbalance ratio information to the household distribution panel, Displays on my monitor; The control server receives the current amount information of the load current transformer, the current transformer in the high-voltage distribution board and the current transformer in the household distribution board, and divides the phase unbalance into phase groups of less than 1% And the configuration of the inter-load wiring circuit is controlled remotely for each phase by driving the magnetic switch through the control command.

FIG. 1 is a configuration diagram of an electric distribution panel for supplying low-voltage electric power to a conventional electric power consumer. In order to supply a power source (380 / 220V) necessary for a load facility to an electric power source, When the front door of the switchgear is opened, a main circuit wiring breaker 110, a bus bar 120, a branching circuit breaker 130 (MCCB1 to MCCB4) for supplying low-voltage power of three-phase and four- (ELB1 to ELB6) are provided to supply power to the load facilities (load 1 to load 10) requiring three-phase or single-phase low-voltage power via a power cable.

However, there is no apparatus or method for saving energy and electricity rate in the switchboard, and devices for shutting off the standby power can not be installed inside the switchboard, but are installed outside and need to be manually managed by the user .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is a first object of the present invention to provide a standby power saving control device having a multi-channel load current detection and timer blocking function, By performing measurement and power surveillance separately, it provides information in real time so that user can directly check the amount of electricity to be used and the estimated electricity rate, and when the standby power shutdown function is executed by using the load current value measured for each phase of the branch circuit, And the standby power is automatically cut off by unnecessarily consuming the standby power by controlling the electromagnetic contactor.

A second object of the present invention is to provide a standby power saving control apparatus and a standby power saving apparatus which are capable of controlling the electromagnetic contactor by time- Thereby reducing consumption.

In order to accomplish the above object, the present invention relates to a smart switchboard having a standby power saving control device having a multichannel load current detection function and a timer shutoff function. The present invention relates to a switchboard breaker for a main circuit, a bus bar, , A separate current transformer to measure the current consumed in the load facility supplied with low-voltage power for each phase of the earth leakage breaker, an electromagnetic contactor for shutting off or returning the power to the load facility, and a load device requiring three- A power distributing portion including a power cable to be supplied; And outputting power monitoring information based on the load current of each phase measured by using the separate current transformer. In accordance with the current measured at the standby power and the cutoff and return time of the set load power supply, A standby power saving control device for automatically shutting off and returning power to a load facility by controlling an electromagnetic contactor provided on the equipment side; .

Further, the standby power saving control device includes three channels of three-phase four-wire type voltage and six channels of current input from a separate current transformer of a distribution unit for measuring a load current supplied to a load facility, An analog input unit for calculating power data through the antenna; And a controller for receiving the power data calculated through the analog input unit through the SPI, monitoring the power, confirming the actual use state and the standby power state of the load facility, checking the current measured at the standby power, A digital control unit for generating a control command related to multi-channel cutoff or return according to the return time and controlling the electromagnetic contactor of the power distribution unit by using the output contact according to the generated control command, ; And a control unit.

When the calculated current of the load equipment is equal to or lower than the standby power value, or when the load facility power cutoff time set by the timer is reached, the digital unit operates the output contact to control the electromagnetic contactor of the power distribution unit, .

Further, the digital unit operates the output contact to control the electromagnetic contactor of the power distribution unit to perform power return of the load facility when the load facility power return time set by the timer is reached.

The digital unit transmits at least one of the power data calculated through the analog input unit and the power shutdown and recovery time to the power monitoring server.

The present invention relates to a standby power cut-off method for a smart switchboard with built-in standby power saving control device having a multichannel load current detection and a timer cutoff function. The standby power cutoff method comprises the steps of: (a) Setting a time and a return time; (b) setting the current value consumed by the standby power saving control device when standby power of the load facility is consumed; (c) The standby power saving control device receives three channels of three-phase four-wire type voltage and six channels of current input from a separate current transformer of a distribution part for measuring a load current supplied to a load facility, ; (d) monitoring the power using the calculated power data by the standby power saving control device and confirming an actual use state and a standby power state of the load facility; (e) determining whether the standby power saving control device has reached a power shutdown time set by the timer; (f) if the load facility power cut-off time set by the timer is reached as a result of the determination in the step (e), the standby power saving control device operates the output contact to control the electromagnetic contactor of the power distribution unit, Performing blocking; (g) determining whether the standby power saving control device has reached a load facility power return time set by a timer; And (h) if it is determined in the step (g) that the load facility power return time set by the timer is reached, the standby power saving control device operates the output contact to control the electromagnetic contactor of the power distribution unit, Performing power return; And a control unit.

And (i) determining whether the current of the load equipment calculated by the standby power saving control device is equal to or less than a predetermined standby power value when the load facility power cutoff time set by the timer is not reached ; And (j) if the calculated current of the load equipment is equal to or less than a predetermined standby power value as a result of the determination in the step (i), the standby power saving control device operates the output contact to control the electromagnetic contactor of the distribution unit, Performing the procedure to the step (f) for performing shutdown of the facility; And a control unit.

According to the present invention as described above, the power distribution panel can be replaced with a smart switchboard, so that power can be stably supplied without requiring a separate space, and at the same time, power supply of the load equipment unnecessarily consuming power in the standby power state The energy saving effect can be confirmed at a glance through real-time power monitoring.

 According to the present invention, there is also an effect that the load facility can be conveniently managed without the hassle of maintenance through the standby power determination, shutdown and timer scheduling function using the standby power saving control device incorporated in the smart switchboard.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of an electric distribution panel for supplying low-voltage electric power to a conventional electric power consumer; Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a smart switchboard with built-in standby power saving control device and a multi-channel load current detection and timer blocking function according to the present invention.
3 is a view showing a front MMI part and a rear part TB part of the standby power saving control device according to the present invention.
4 is a detailed configuration diagram of a standby power saving control device according to the present invention;
5 is a circuit diagram of an analog input part of the standby power saving control device according to the present invention.
6 is a circuit diagram of a CPU and a DO of the digital unit of the standby power saving control apparatus according to the present invention.
7 is a flowchart of a standby power cutoff method of a smart switchboard with a standby power saving control device having a multi-channel load current detection and timer blocking function according to the present invention.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

A smart switchboard with a standby power saving control device having a multi-channel load current detection and timer blocking function according to the present invention and a standby power cutoff method thereof will be described with reference to FIG. 2 to FIG.

FIG. 2 is a block diagram of a Smart Switchboard (hereinafter referred to as a Smart Switchboard) having a standby power saving control device equipped with a multi-channel load current detection and timer blocking function according to the present invention. A control device 200 and a power monitoring server 300. [

The smart switchboard according to the present invention can be manufactured in the same size as the conventional switchboard and can be installed in a power supply without expanding the space. The standby power saving control device 200 is installed in the front door. When the front door is opened, Power supply unit 100 for supplying low-voltage power of three-phase and four-line power is provided in the interior of the power monitoring server 200. The power data calculated through the standby power saving control device 200 and the power- Lt; / RTI >

2, the power distributing unit 100 includes a main circuit interconnection breaker 110, a bus bar 120, a branch circuit interconnection breaker 130 (MCCB1 to MCCB4), an earth leakage circuit breaker 140 (I1 to I6) for measuring a current consumed in a load facility supplied with low-voltage power for each phase, a power source for the load facility (ELB1 to ELB6), and an earth leakage breaker (ELB1 to ELB6) (MC1 to MC6) for shutting off or returning the high-voltage power to the loads (load 1 to load 10) requiring three-phase or single-phase low-voltage power. At this time, the magnetic contactors 160 (MC1 to MC6) are controlled by the power cut-off time of the load equipment set by the standby power saving control device 200 or by the current values measured from the separate current transformers 150 (I1 to I6) When measured below the standby power value, the power of the load facility can be shut off.

3, the standby power saving control device 200 is divided into a front MMI unit 10 and a rear TB unit 20. The MMI unit 10 includes a standby power saving control unit 200, (RUN), an abnormal operation (ERROR), and a communication state (COMM) can be visually confirmed by the status display LED (11) indicating the status of the control power (POWER), the normal operation (RUN) In addition, there is a timer LED 12 for indicating whether or not a timer for controlling the electromagnetic contactor 160 is set so that the power of the load facility can be shut off or returned, and the internal setting timers 1 to 6 (TMR1 to TMR6) Can be visually confirmed. Further, there is a DO on / off LED 13 for indicating whether or not the electromagnetic contactor 160 is shut off or returned, so that the user can conveniently visually check the control state of the load facility. It is also possible to view and set the LCD 15 using the UP, DOWN, LEFT, RIGHT, ENTER, and ESC key buttons 14 that can set the timer and whether to use the DO for controlling the electronic contactor 160 have.

The rear TB unit 20 has a voltage input port 21 for receiving three-phase, four-wire, low-voltage power supplied from a smart switchboard, There is provided a current input port 22, 23 for receiving a current from a separate current transformer 150 for measuring a current to be supplied to the load device, and an output capable of controlling the electromagnetic contactor 160 for shutting off or returning the power of the load device A contact 24, a communication port 25, and a control power port 26, and is connected with a cable according to each function.

Specifically, the standby power saving control device 200 provides power monitoring information based on the measured load currents of each phase using the separate current transformer 150, The power supply of the load facility is automatically shut off and returned by controlling the electromagnetic contactor 160 installed on the side of the load facility using the output contact 24 according to the shutoff and return time, And includes an analog input section 210 and a digital section 220.

More specifically, the analog input unit 210 is connected to a three-phase four-wire-type voltage 3 channel and a split current transformer 150 (Current Transformer) of the power distributing unit 100 for measuring a load current supplied to a load facility 6 channels of input current are inputted to the terminal block and power data is calculated through power chips 211 and 212.

Here, the power chips 211 and 212 receive voltages and currents from the voltage input port 21 and the current input ports 22 and 23, respectively, and generate voltage, current, frequency, active power, reactive power, apparent power, And calculates power data such as power factor.

The digital unit 220 receives the power data calculated through the power chips 211 and 212 of the analog input unit 210 through a serial peripheral interface (SPI) 230, monitors the power, Generates a control command related to multi-channel cutoff or return according to the current measured at the time of the standby power and the cutoff time and the return time of the set load facility power supply and outputs the output command to the output contact 24 according to the generated control command. And controls the electromagnetic contactor 160 to shut off or restore the power of the load facility.

At this time, the digital unit 220 operates the output contact 24 to control the electromagnetic contactor 160 when the calculated current of the load equipment is equal to or less than the standby power value or when the load facility power cutoff time set by the timer is reached, And performs power-off of the load equipment by scheduling.

In addition, the digital unit 220 controls the electromagnetic contactor 160 by operating the output contact 24 when the load facility power return time set by the timer is reached, thereby performing power supply restoration of the load facility by time scheduling. Here, if the timer is not activated, the digital unit 220 can restore the power supply of the load equipment by manual return of the user.

Meanwhile, the digital unit 220 transmits the power data calculated through the analog input unit 210 and the power shutdown and recovery time to the power monitoring server 300.

5 is a circuit diagram of the analog input section 210 of the standby power saving control apparatus 200 according to the present invention. The voltage input port 21 and the current input ports 22, The voltage and current input to the SPI 230 are input to the power chips 211 and 212 that can calculate the power data via the passive elements such as the resistor R and the capacitor C, To the digital unit 220 via the interface 220.

6 is a circuit diagram of a CPU and a DO of the digital unit 220 of the standby power saving control device 200 according to the present invention. The CPU receives power data transmitted through the SPI 230 pin, And the output contact 24 is operated to control the electromagnetic contactor 160 of the power distributing unit 100 when the load facility is measured with a current equal to or lower than the standby power value or the power cutoff time set by the timer do.

7 is a flowchart of a standby power cutoff method of a smart switchboard with a standby power saving control device having a multi-channel load current detection and timer blocking function according to the present invention.

As shown in the figure, the power cut-off time and the return time of the load equipment by the timer are set by using the front MMI unit 10 of the standby power saving control device 200 (S10) (S20).

The power chips 211 and 212 of the analog input unit 210 include three channels of three-phase four-wire type voltage and a split current transformer 150 of the power distributing unit 100 for measuring the load current supplied to the load equipment. (6) current input from a current transformer is input to the terminal block and power data is calculated through power chips 211 and 212 (S30).

Subsequently, the digital unit 220 receives the calculated power data through the SPI (Serial Peripheral Interface) 230, monitors the power, and confirms the actual use state and standby power state of the load facility (S40).

In addition, the digital unit 220 determines whether the load facility power cut-off time set by the timer has come (S50).

The digital unit 220 operates the output contact 24 to control the electromagnetic contactor 160 of the power distribution unit 100 so as to perform time scheduling The power supply of the load equipment is cut off (S60).

Thereafter, the digital unit 220 determines whether the load facility power return time has been set by the timer (S70).

The digital unit 220 operates the output contact 24 to control the electromagnetic contactor 160 of the power distribution unit 100 so as to perform time scheduling The power supply of the load equipment is restored (S80).

On the other hand, if it is determined in step S50 that the load facility power cutoff time set by the timer is not reached, the digital unit 220 determines whether the current of the calculated load facility is less than a preset standby power value (S90) .

If it is determined in operation S90 that the calculated current of the load device is equal to or less than the predetermined standby power value, the digital unit 220 operates the output contact 24 to control the electromagnetic contactor 160 of the power distributing unit 100 The procedure is executed in operation S60 of performing shutdown of the load facility by time scheduling.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

100: Power distribution unit 200: Standby power saving control device
300: Power monitoring server 110: Circuit breaker for main circuit
120: Booth bar 130: Circuit breaker for branch circuit
140: Earth leakage breaker 150: Separate current transformer
160: Magnetic contactor 170: Power cable
210: analog input section 220: digital section
230: SPI 211, 212: Power chip
10: Front MMI module 11: Status LED
12: Timer LED 13: DO on / off LED
14: Key button 15: LCD
20: rear side TB part 21: voltage input port
22, 23: Current input port 24: Output contact
25: Communication port 26: Control power port

Claims (7)

The electric currents consumed in the load devices supplied with low-voltage power for each phase of the circuit breaker 110 for the main circuit, the bus bar 120, the circuit breaker 130 for the branch circuit, the earth leakage breaker 140, And a power cable 170 that supplies power to the load equipment requiring three-phase or single-phase low-voltage power, and a power cable 170 that supplies power to the load equipment requiring three-phase or single-phase low-voltage power. (100); And
And provides the power monitoring information on the basis of the measured load currents of each phase using the separate current transformer 150. In accordance with the measured current in standby power and the cutoff and return time of the set load facility power, A standby power saving control device 200 for controlling the electromagnetic contactor 160 installed on the side of the load facility to automatically shut off and restore the power of the load facility; , ≪ / RTI &
The standby power saving control device 200 includes three channels of three-phase four-wire type and three channels of current 6 channels input from the separable current transformer 150 of the power distributing unit 100 for measuring the load current supplied to the load facility. An analog input unit 210 for receiving power from the terminal block and computing power data through the power chips 211 and 212; And
Receives the power data calculated through the analog input unit 210 through a serial peripheral interface (SPI) 230, monitors the power, checks the actual use state and the standby power state of the load facility, Channel cutoff or return according to the cut-off time and the return time of the set load facility power supply, and outputs the control command to the power distributing unit 100 using the output contact 24 according to the generated control command. A digital unit 220 for controlling the contactor 160 to shut off or restore power to the load facility; , Wherein the first,
The power chips 211 and 212 receive voltages and currents from the voltage input port 21 and the current input ports 22 and 23 and calculate the voltage, current, frequency, active power, reactive power, apparent power, And a power supply control unit for controlling power consumption of the power supply unit.
delete The method according to claim 1,
The digital unit 220,
The output contact 24 is operated to control the electromagnetic contactor 160 of the power distributing unit 100 so as to control the load device 100. In this case, when the current of the calculated load device is less than or equal to the standby power value, Wherein the power switch is turned off when the power switch is turned off.
The method according to claim 1,
The digital unit 220,
Wherein when the load facility power return time set by the timer is reached, the output contact (24) is operated to control the electromagnetic contactor (160) of the power distributing unit (100) Smart switchboard with built-in standby power saving control device with current sensing and timer interception.
The method according to claim 1,
The digital unit 220,
And the power monitoring server 300 transmits at least one of the power data calculated through the analog input unit 210 and the power cutoff and return time to the power monitoring server 300. [ Smart switchboard with built-in power saving control device. delete delete

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