KR20120028254A - Remote power recovery system using telephone ring signal of an electronic exchanger - Google Patents

Abstract

PURPOSE: A remote leakage breaker power recovery system using a telephone ring signal of an electronic exchanger is provided to reduce a failure of a leakage breaker recovery device due to lightning by supplying power of the leakage breaker recovery device through a telephone line. CONSTITUTION: A leakage breaker recovery system receives driving power of a leakage breaker recovery device(340) through a telephone line(380). An electronic exchanger(350) outputs a ring signal of 20 Hz and 80 V to the telephone line. The leakage breaker recovery device is driven with energy of the ring signal. The leakage breaker recovery device operates a switch(360) of the leakage breaker and includes a switch driving unit(370). The leakage breaker recovery device receives driving power through the telephone line.

Description

Electronic circuit breaker remote power recovery system using telephone ring signal {REMOTE POWER RECOVERY SYSTEM USING TELEPHONE RING SIGNAL OF AN ELECTRONIC EXCHANGER}

The present invention relates to a system capable of recovering an earth leakage breaker power source that has been tripped remotely by transmitting a ring signal of an electronic exchanger to the earth leakage breaker.

The function of earth leakage breaker installed for efficient operation of unmanned communication equipment, surveillance equipment and power supply equipment can automatically recover tripped earth leakage breaker in addition to simple lightning and overcurrent protection and can also be controlled remotely. Function is included, too. However, in this case, there is a problem that a failure occurs in the earth leakage breaker itself when a lightning strike occurs by using commercial power for automatic recovery and remote control of the earth leakage breaker. Accordingly, there is a demand for the development of a solution that prevents the fault of the earth leakage breaker itself from being separated from the commercial power source and the remote control can be completely performed.

[Related Technical Literature]

1. Earth leakage breaker automatic recovery device (Patent application number: 10-2008-0053299)

One embodiment of the present invention provides a power recovery device of an earth leakage breaker using a ring signal of a telephone exchange.

In order to achieve the above technical problem, a first aspect of the disclosed technology comprises: a target equipment supplied with driving energy from a power line; An earth leakage circuit breaker that blocks inflow of overvoltage or overcurrent from the power line to the object equipment and protects the object equipment when an abnormal overcurrent occurs in the object equipment; Provided is a circuit breaker recovery system including a circuit breaker recovery device driven by a ring signal energy of a telephone line to operate a switch of the circuit breaker.

A second aspect of the disclosed technology to achieve the above technical problem, the power supply unit for supplying the drive power of the earth leakage breaker recovery device from the energy of the ring signal of the telephone line; And a switch driver for operating a switch of the earth leakage breaker according to a signal received from a telephone line.

Embodiments of the disclosed technology can have the effect of including the following advantages. However, the embodiments of the disclosed technology are not meant to include all of them, and thus the scope of the disclosed technology should not be understood as being limited thereto.

According to one embodiment of the disclosed technology, since the power supply of the circuit breaker recovery apparatus is supplied using a telephone line, it is possible to reduce the failure of the circuit breaker recovery apparatus that is lightning strike. In addition, there is an advantage that the device investment cost is reduced by utilizing the idle facilities of the electronic switch and cable network due to the decrease in telephone demand.

1 is a circuit diagram of an earth leakage breaker.
2 is a view showing an embodiment of a circuit breaker recovery apparatus according to the prior art.
3 is a diagram illustrating an earth leakage breaker repair system according to an embodiment of the disclosed technology.
4 is a block diagram of an earth leakage breaker repair apparatus according to an exemplary embodiment.

The description of the disclosed technique is merely an example for structural or functional explanation and the scope of the disclosed technology should not be construed as being limited by the embodiments described in the text. That is, the embodiments may be variously modified and may have various forms, and thus the scope of the disclosed technology should be understood to include equivalents capable of realizing the technical idea.

Meanwhile, the meanings of the terms described in the present application should be understood as follows. The terms 'first' and 'second' are used to distinguish one component from other components. The scope of the rights shall not be limited. For example, the first component may be named a second component, and similarly, the second component may also be named a first component.

When a component is referred to as being "connected" to another component, it should be understood that there may be other components in between, although it may be directly connected to the other component. On the other hand, when an element is referred to as being "directly connected" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions describing the relationship between the components, such as "between" and "immediately between" or "neighboring to" and "directly neighboring to", should be interpreted as well.

Singular expressions should be understood to include plural expressions unless the context clearly indicates otherwise, and terms such as "include" or "have" refer to features, numbers, steps, operations, components, parts, or parts thereof described. It is to be understood that the combination is intended to be present, but not to exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

Each step may occur differently from the stated order unless the context clearly dictates the specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosed technology belongs, unless otherwise defined. Terms defined in commonly used dictionaries should be interpreted to be consistent with meaning in the context of the relevant art and can not be construed as having ideal or overly formal meaning unless expressly defined in the present application.

1 is a circuit diagram of an earth leakage breaker. An earth leakage circuit breaker is composed of an image transformer for detecting leakage current, an amplifier for amplifying the detected output signal, a power supply for supplying an amplifier bias voltage, and an output part for generating an operating current by increasing the output voltage when the set leakage current is exceeded. . In the steady state, since the inflow and outflow currents of the video current transformers are the same, the vector sum of the magnetic fluxes generated in the video current transformer core is '0', but when a short circuit occurs, leakage current flows and there is a difference in the vector sum of the magnetic flux in the cores. An induced voltage is generated on the secondary side. This voltage is amplified and AC power is supplied to the trip coil so that the movable part of the trip coil trips the breaker. In addition, a test button is installed to check the operation state of the circuit breaker, and in the case of a high-sensitivity circuit breaker, a short circuit is detected within 0.03 seconds.

2 is a view showing an embodiment of a circuit breaker recovery apparatus according to the prior art. As shown, the circuit breaker recovery apparatus according to the prior art uses a commercial power source-a power line shown-for the recovery and remote control of the circuit breaker. Therefore, when lightning strikes or for other reasons, high voltage or high current flows into the ground fault breaker recovery device on the power line, and the ground fault breaker recovery device itself is broken.

3 is a diagram illustrating an earth leakage breaker repair system according to an embodiment of the disclosed technology. As shown, the ground fault breaker recovery system 300 receives the driving power of the ground fault breaker recovery device 340 through the telephone line 380. The ring signal output from the telephone exchange line 380 by the electronic exchange 350 is 20Hz, 80V. The earth leakage breaker recovery device 340 is driven by the energy of the ring signal to operate the switch 360 of the earth leakage breaker. The earth leakage breaker recovery device 340 includes a switch driver 370 for operating the switch 360 of the earth leakage breaker. The earth leakage breaker recovery device 340 receives driving power from the telephone line 380 instead of the power line 310. Therefore, even when a high voltage or high current flows into the power line 310 due to lightning or other reasons, the ground fault breaker recovery device 340 can operate normally.

4 is a block diagram of an earth leakage breaker repair apparatus according to an exemplary embodiment.

According to FIG. 4, the earth leakage breaker recovery device 400 includes a power supply unit 410 and a switch driver 420, a communication unit 430, a breaker operation monitoring unit 440, and an operation monitoring unit 450 for the target equipment.

According to one embodiment, the power supply unit 410 supplies power for driving the ground fault breaker recovery device 400 from the ring signal sent from the electronic exchange. The ring signal sent out from the electronic exchange is 20Hz, 80V alternating current. The power supply unit 410 may include a rectifier circuit unit (not shown) for converting AC power into a DC component for driving the circuit breaker recovery device 400, and may further include a charging unit (not shown) including a battery. have.

The switch driver 420 operates the switch of the ground fault breaker by a signal received from the telephone line. When the circuit breaker is in operation and the cutoff switch is turned off, the switch driver 420 returns the switch of the circuit breaker to the ON state by a signal received from the telephone line. At this time, the earth leakage breaker is in a state in which power is normally supplied because the device does not have a short circuit.A state in which the earth leakage breaker is turned off means that the earth leakage breaker trips due to a short circuit, and thus power is not supplied to the target equipment. do. The switch driver 420 returns the switch of the earth leakage breaker to the ON state by any one of a solenoid, a relay, and a motor. The signal for causing the switch driver 420 to operate the switch of the earth leakage breaker may be a ring signal sent from the electronic exchange according to an embodiment. The switch driver 420 may be directly driven by the energy of the ring signal.

The circuit breaker recovery device 400 may further include a circuit breaker operation monitoring unit 440 for monitoring the operation of the circuit breaker. The circuit breaker operation monitoring unit 440 may drive the switch driver 120 after a predetermined time without waiting for an operation signal from a remote location such as a signal from a telephone line when the earth leakage breaker is turned off.

The earth leakage breaker recovery device 400 may further include a target equipment operation monitoring unit 450 for monitoring the operation of the target equipment according to another embodiment. The target equipment operation monitoring unit 450 may monitor whether the target equipment operates normally and report an operation state of the target equipment to a remote control center (not shown). Meanwhile, the earth leakage breaker recovery device 400 transmits the information collected from the breaker operation monitoring unit 440 and the target equipment operation monitoring unit 450 to the remote control center through a telephone line, and receives a control command from the remote control center. The communication unit 430 may further include. Thus, the remote control center can grasp the state of the earth leakage breaker in each area.

According to the above-described embodiments, the circuit breaker recovery apparatus supplies power to the circuit breaker recovery apparatus using a telephone line, thereby reducing the failure of the circuit breaker recovery apparatus that is lightning strike. In addition, there is an advantage that the remote control center, including the breaker operation monitoring unit, the target equipment operation monitoring unit and the communication unit can grasp the state of the earth leakage breaker in each region.

The disclosed method and apparatus have been described with reference to the embodiments illustrated in the drawings for ease of understanding, but these are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. Therefore, the true technical protection scope of the disclosed technology should be defined by the appended claims.

300: earth leakage breaker recovery system 310: power line
320: purpose equipment 330: earth leakage breaker
340: earth leakage breaker recovery device 350: electronic switch
360: earth leakage breaker switch 370: switch drive unit
380: telephone line

Claims (8)

Target equipment supplied with driving energy from a power line;
An earth leakage circuit breaker which blocks inflow of overvoltage or overcurrent from the power line to the object equipment and protects the object equipment when an abnormal overcurrent occurs in the object equipment; And
And an earth leakage breaker recovery device driven by energy of a ring signal of a telephone line to operate a switch of the earth leakage breaker. The method of claim 1,
The circuit breaker recovery device, the circuit breaker recovery system further comprises a circuit breaker operation monitoring unit for monitoring the operation of the circuit breaker. The method of claim 1,
The earth leakage breaker recovery apparatus, the earth leakage breaker recovery system further comprises a monitor operation of the target equipment for monitoring the operation of the target equipment. The method of claim 1,
The earth leakage breaker recovery device transmits the information collected from the breaker operation monitoring unit and the target equipment operation monitoring unit to a remote control center for controlling the earth leakage blocking recovery device through the telephone line, and from the remote control center. The circuit breaker recovery system further comprising a communication unit for receiving a breaker recovery device control command. The method of claim 1,
The earth leakage breaker recovery system includes a switch driver for operating a switch of the earth leakage breaker by any one of a means selected from a solenoid, a relay, and a motor. A power supply unit for supplying driving power of the circuit breaker recovery device from the energy of the ring signal of the telephone line; And
An earth leakage breaker recovery apparatus comprising a switch driver for operating a switch of the earth leakage breaker in response to a signal received from a telephone line. The method of claim 6,
And a signal received from the telephone line includes the ring signal. The method of claim 6,
The switch driver is a circuit breaker recovery device driven by the energy of the ring signal.

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