KR20110045854A - Apparatus and method for detecting arc fault in power supply networks - Google Patents

Abstract

PURPOSE: A device and method for detecting arc in a power distribution line are provided to accurately determine an arc position based on the position of an arc fault circuit interrupter in the power distribution line. CONSTITUTION: A receiver(810) receives whether an arc is detected from a plurality of arc fault circuit interrupter(860,871,881). A fault position determining unit(820) determines the fault position of the distribution line based on the position of the arc fault circuit interrupter.

Description

Apparatus and method for detecting arc in distribution line {APPARATUS AND METHOD FOR DETECTING ARC FAULT IN POWER SUPPLY NETWORKS}

The present invention relates to a technique for managing a distribution line, and more particularly, to a technique for determining a location of a failure occurring in a distribution line.

Fires caused by short circuits lead to immense loss of life and property. The installation of an earth leakage breaker is mandatory in all buildings that use electricity to prevent such disasters caused by electricity. Meanwhile, according to a study by the National Fire Protection Association (NFPA), an average of 73,500 electrical fires occur every year, with an average of 591 deaths, 2,247 injuries, and a whopping $ 1 billion in damages. That's 82%. Arcs are caused by insulation breakdown due to ageing of the wires, weakening of the wires by sunlight, damage to the wires caught in furniture or doors, continuous bending of the wires, and incorrect connection of the plugs. The heat generated by the arc gradually carbonizes the insulators of the wire anodes, causing dielectric breakdown, and at some point a carbonization path is formed, causing an instant fire. In addition, direct heat from arcs, high-pressure gas, and molten metal fragments transfer heat to easily flammable materials such as surrounding flammable materials, paper, sawdust, clothing, and fire.

Arc Fault Circuit Interrupt (AFCI) typically detects the arc signal through current measurement and performs the function of breaking the circuit within a specified time. However, when a distribution line is hierarchically configured, when an arc occurs in a specific power line, an arc is not detected in only one arc breaker, but a signal is detected and blocked in a plurality of arc breakers. In such a configuration, it is necessary to minimize the damage of the entire power system by blocking only the corresponding arc breaker by determining the exact position of the arc generation.

An object of the present invention is to determine the exact location of the failure occurred in the distribution line.

In order to achieve the above object and to solve the problems of the prior art, the present invention provides a device for determining the location of a failure of a distribution line, comprising: a receiving unit for receiving an arc detection from each of a plurality of hierarchically configured arc breakers; Provided is a failure location determination device including a failure location determination unit for determining a failure occurrence position of the distribution line based on the position in the hierarchy of the arc breaker receiving the detection of the arc.

According to one aspect of the present invention, a detection unit for detecting an arc generated in a distribution line, an arc type determination unit for determining whether the generated arc is a parallel arc or a serial arc, according to the arc type to cut off the power supply to the power distribution line An arc breaker is provided that includes a breaker.

According to another aspect of the invention, the step of receiving each of the arc detection from a plurality of hierarchically configured arc breakers and the failure of the distribution line based on the position in the layer of the arc breaker receiving the arc detection Provided is a failure location determination method of a distribution line including determining a generation location.

According to another aspect of the present invention, detecting an arc generated in a distribution line, determining whether the generated arc is a parallel arc or a series arc and cut off the power supply to the power distribution line according to the arc type Provided is a method for shutting off power of a distribution line including the steps of:

According to the present invention, it is possible to determine whether an arc has occurred at a plurality of points of the distribution line to determine the exact location of the failure.

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

1 is a view for explaining the operation of each arc circuit breaker when a failure does not occur in a hierarchically arranged power distribution circuit.

The hierarchical distribution circuit is divided into upper layer and lower layer. The upper layer is a distribution circuit from the power supply 110 to the distribution node, and the lower layer is a distribution circuit from the distribution node to the loads 142, 152, 162, 172. In FIG. 1, an arc breaker 120 is installed in a branch from a power supply to a distribution node, and an arc breaker 141, 151, 161, in each branch from a power distribution node to each load 142, 152, 162, and 172. 171 has been installed. Hereinafter, the arc breaker 120 installed in the upper layer will be referred to as the upper layer arc breaker, and the arc breakers 141, 151, 161 and 171 installed in the lower layer will be referred to as the lower layer arc breaker.

, 전류

및 임피던스

에 대하여 하기 수학식 1과 같은 관계가 성립한다.Voltage seen by each arc breaker (120, 141, 151, 161, 171)

, Current

And impedance

With respect to the following relationship is established.

[Equation 1]

은

의 합성 저항이다.here,

silver

Is a synthetic resistance.

, 전류

및 임피던스

의 관계는 하기 수학식 2와 같다.On the other hand, the voltage seen by each lower layer arc breaker (141, 151, 161, 171)

, Current

And impedance

The relationship of is as shown in Equation 2 below.

[Equation 2]

Equation 2 may be expressed as Equation 3 below.

&Quot; (3) "

FIG. 2 is a diagram illustrating the operation of each arc breaker when a series arc occurs in an upper layer of a hierarchically configured power distribution circuit.

및 전류

, 임피던스

(242, 252, 262, 272)의 관계는 하기 수학식 4와 같다.Voltage seen by lower instrumentation arc breakers 241, 251, 261 and 271 when a series arc occurs in the upper layer

And current

, Impedance

The relationship of (242, 252, 262, 272) is shown in the following equation (4).

&Quot; (4) "

Since the positions on the power distribution lines of the respective lower layer arc breakers 241, 251, 261, and 271 are similar, only the first lower layer arc breaker 241 will be described below.

가 생성된다. 따라서 직렬 아크 임피던스

로 인한 전압 강하가 발생한다.Series arc impedance when a series arc occurs in the upper layer

Is generated. Thus series arc impedance

Due to the voltage drop.

, 전류

임피던스

및 직렬 아크 임피던스

의 관계는 하기 수학식 5와 같다.The voltage seen by the upper tier arc breaker 220 when a series arc occurs in the upper tier

, Current

impedance

And series arc impedance

The relationship of is as shown in Equation 5 below.

[Equation 5]

및 전류

를 가정하면 하기 수학식 6의 관계가 있다.Voltage seen by the upper tier arc breaker 220 in the normal state where no series arc occurs in the upper tier

And current

If we assume that there is a relationship of the following equation (6).

&Quot; (6) "

라고 생각할 수 있으므로, 수학식 5는 수학식 6을 참고하여 하기 수학식 7과 같이 표현할 수 있다.

Equation 5 may be expressed as Equation 7 with reference to Equation 6.

[Equation 7]

에 대하여 정리한다면 수학식 8과 같이 표현할 수 있다.Equation 7

In the following, it can be expressed as Equation 8.

[Equation 8]

라고 정의한다면, 수학식 8은 하기 수학식 9와 같이 표현할 수 있다.here,

Equation 8 can be expressed as Equation 9 below.

[Equation 9]

가 변화하고, 상위 계층의 아크 차단기(220)뿐만 아니라, 하위 계층의 아크 차단기(241)도 아크 발생 여부를 검출할 수 있음을 알 수 있다.Referring to Equation 9, when the series arc occurs in the upper layer, the current of the upper layer

Is changed, it can be seen that not only the arc breaker 220 of the upper layer but also the arc breaker 241 of the lower layer can detect whether or not an arc is generated.

3 is a diagram illustrating the arc detection possibility and whether or not each arc breaker in the embodiment shown in FIG.

Referring to FIG. 3, when the series arc occurs in the upper layer, not only the arc breaker 220 of the upper layer but also the arc breakers 241, 251, 261, and 271 of the lower layer may detect whether the arc is generated. Able to know.

Therefore, when an arc is detected by the arc breaker 220 of the upper layer and the arc breakers 241, 251, 261, and 271 of the lower layer, it can be seen that a series arc has occurred in the upper layer, and the arc breaker of the upper layer is distributed. The circuit can be broken.

FIG. 4 is a diagram illustrating the operation of each arc breaker when a series arc occurs in a lower layer of a hierarchically configured power distribution circuit. In FIG. 4, an embodiment where a series arc is generated in a lower layer associated with the first arc breaker 441 is illustrated.

, 전류

및 임피던스

의 관계는 하기 수학식 10과 같다.Voltage seen by each arc breaker 420, 441, 451, 461, 471

, Current

And impedance

The relationship of is as shown in Equation 10 below.

[Equation 10]

, 전류

, 임피던스

및 아크저항

의 관계는 하기 수학식 11과 같다.First, the voltage to the first arc breaker 441 where the series arc occurred.

, Current

, Impedance

And arc resistance

The relationship of is as shown in Equation 11 below.

[Equation 11]

은 하기 수학식 12와 같이 정의된다.here,

Is defined as in Equation 12 below.

[Equation 12]

및 전류

의 관계는 하기 수학식 13과 같다.Voltage of other lower layer arc breakers 441, 451, 461, 471 that no series arc has occurred.

And current

Is represented by the following equation (13).

[Equation 13]

Referring to Equation 13, even when a series arc occurs in a lower layer, other arc breakers 451, 461, and 471 except the arc breaker 441 of the branch in which the serial arc is generated may detect whether an arc is generated. It can be seen that.

는 하기 수학식 14과 같이 정의할 수 있다.Also, the current seen by the upper layer arc breaker 420.

May be defined as in Equation 14 below.

[Equation 14]

Referring to Equation 14, when the series arc occurs in the lower layer, the current of the upper layer changes, and not only the first arc breaker in which the series arc is generated, but also the arc breaker 420 of the upper layer detects whether the arc is generated. It can be seen that.

FIG. 5 is a diagram illustrating arc detection possibilities of each arc circuit breaker and whether or not the blocks are blocked in the embodiment shown in FIG. 4.

Referring to FIG. 5, when a series arc occurs in a specific branch of a lower layer, not only the specific arc breaker 441 installed in the branch where the series arc occurs, but also the arc breaker 420 of the upper layer may detect whether an arc occurs. It can be seen. However, it can be seen that the arc breakers 251, 261, and 271 installed in other branches where the series arc does not occur cannot detect whether the arc has occurred.

Therefore, when an arc is detected by the arc breaker 420 of the upper layer and the arc breaker 241 of a specific lower layer, it can be seen that a series arc has occurred in the lower layer. Thus, an arc breaker 241 installed at a particular branch in which the series arc has occurred can interrupt the power distribution circuit.

Fig. 6 shows the arc breaking action TC-curve of the arc breaker.

The horizontal axis of the TC-curve represents the current flowing through the distribution line, and the vertical axis of the TC-curve represents the arc removal time. Referring to FIG. 6, it can be seen that the arc breaker quickly cuts off the circuit when a large current flows through the distribution line, but the arc breaker slowly cuts off the circuit if the magnitude of the current flowing in the distribution line is small.

When the arc breakers are hierarchically configured as shown in Figs. 1, 3 and 5, the current flowing in the distribution line of the upper layer is larger than the current flowing in the distribution line of the lower layer. Therefore, the upper layer arc breaker breaks the circuit before the lower layer arc breaker.

When an arc occurs in the upper layer, a plurality of arc breakers in the lower layer as well as the arc breaker in the upper layer detects whether the arc has occurred. The upper layer arc breaker breaks the distribution line before the lower layer arc breaker. An arc breaker installed at the arc generating portion blocks the distribution line, so it can be said to be a preferred embodiment.

If an arc occurs in the lower tier, the arc breaker of the particular branch where the arc occurred and the arc breaker of the upper tier detect whether the arc has occurred. In this case too, the upper layer arc breaker first cuts the power distribution lines. This is undesirable because the arc blocks the upper layer even if the arc occurs in the lower layer.

Therefore, when an arc occurs in the distribution line, it is necessary to determine the exact arc generation position based on the position on the distribution line of the plurality of arc breakers. Or, based on the position of the plurality of arc breakers on the distribution line, it is necessary to select an arc breaker to cut the distribution line among the plurality of arc breakers.

FIG. 7 is a diagram illustrating a concept of determining a failure section when an arc is detected by one lower breaker.

FIG. 7A illustrates an embodiment of accurately determining a failure location of a distribution line and an arc breaker to block a distribution line in a case where a lower layer arc circuit breaker through which several effective load currents flow.

On the other hand, Figure 7 (b) shows an embodiment in which there is only one lower layer circuit breaker through which a valid load current flows, and a failure occurrence position cannot be determined when an arc is detected by the arc circuit breaker. In this case, the lower layer arc breaker may interrupt the distribution line.

8 is a block diagram showing the structure of a fault location determining apparatus according to an embodiment of the present invention. The fault location determining apparatus 800 includes a receiver 810, a fault location determiner 820, a control unit 830, and a transmitter 840.

The receiver 810 receives an arc detection from a plurality of hierarchically configured arc breakers 860, 871, and 881. According to one embodiment the plurality of arc breakers 860, 871, 881 may include a higher layer breaker 860 that detects an arc between the power source 850 and the power distribution node. In addition, the plurality of arc breakers 860, 871, 881 may include a plurality of lower layer arc breakers 871, 881 for detecting an arc between the distribution node and the loads 872, 882.

The fault location determiner 820 may determine a fault location of the distribution line based on a location in the hierarchy of the arc breakers 860, 871, and 881 that have received the arc detection. As an example, when the receiver 810 receives the arc detection from both the lower layer breakers 871 and 881 as well as the upper layer arc breaker 860, the failure location determining unit 820 may detect that a failure occurs in the upper layer. It can be judged that it occurred.

According to another exemplary embodiment, when the receiving unit 810 receives arc detection from any one of the lower layer detectors 871 and 881, and detects whether the arc is detected from the upper layer detector, the failure location is determined. The determination unit 820 may determine that a failure has occurred in a lower layer in which the lower layer detector, which receives the arc detection, is installed.

The failure location determination unit 820 may determine a location at which the power supply is cut off from the distribution line as well as the location of the failure.

The control unit 830 generates a control signal to cut off the power supply to the failure location.

The transmitter 840 transmits a control signal to the arc breaker associated with the failure location.

Upon receiving the control signal, the arc breaker cuts off power supply to the corresponding power distribution line section according to the control signal.

9 is a block diagram showing the structure of an arc breaker according to an embodiment of the present invention.

The arc breaker 900 includes an arc detector 910, an arc type determiner 920, a transmitter 930, a receiver 940, and a breaker 950.

The arc detector 910 detects an arc generated in the distribution line.

The arc type determiner 920 determines whether the arc detected by the arc detector 910 is a parallel arc or a serial arc.

The blocking unit 950 cuts off power supply to the power distribution line according to the arc type.

As an example, when the arc detected by the arc detector 910 is a parallel arc, the blocking unit 950 immediately cuts off power supply to the power distribution line.

When the arc detected by the arc detector 910 is a serial arc, the transmitter 930 transmits whether the arc is detected to the fault location determining apparatus 990.

The fault location determining apparatus 990 may receive whether the arc is detected from the arc breaker 900 as well as other arc breakers 971 and 972. The arc breakers 900, 971, and 981 may be hierarchically configured according to the shape of the distribution line.

In FIG. 9, the arc breaker 900 is a higher layer arc breaker that detects whether an arc occurs in a section between a power supply 960 and a power distribution node, and the arc breakers 971 and 981 are sections between a power distribution node and a load 972 and 982. A lower layer arc breaker that detects whether an arc has occurred.

The fault location determining apparatus 990 determines a fault occurrence position of the power distribution line based on the position of each arc breaker 900, 971, and 972 and whether the arc is detected.

The fault location determining apparatus 990 determines an arc breaker to cut off the power supply of the distribution line based on the position in the hierarchy of each arc breaker 900, 971, 972 and whether the arc is detected.

The fault location determining apparatus 900 generates a control signal that cuts off the power supply of the distribution line, and transmits the generated control signal to the arc breakers 900, 971, and 972.

The receiver 940 receives a control signal from the fault location determining apparatus 900, and the cutoff unit 950 cuts off power supply to the power distribution line according to the control signal.

According to an embodiment of the present invention, the arc detector 910 may calculate a signal waiting time based on whether the arc is detected. If the receiver 940 does not receive the control signal within the signal waiting time from the time when the arc detector 910 detects the arc, the breaker 950 does not supply the power to the power distribution line regardless of the content of the control signal. You can block.

According to the present invention, the arc breaker 900 waits for a signal waiting time after the arc detector 910 detects an arc of the power distribution line, blocks the power distribution line after the signal waiting time, or according to the control signal within the signal waiting time. Shut off power distribution lines.

Even when the arc detector 910 detects an arc of the distribution line, it may not be appropriate for the arc breaker 900 to block the distribution line. For example, as shown in FIGS. 4 and 5, when the arc 480 occurs in the lower distribution line, the upper layer arc breaker 420 and the first lower layer arc breaker 441 may detect the arc. Can be. In this case, it is preferable that the first lower layer arc breaker 441 block the distribution line.

However, referring to FIG. 6, the upper layer arc breaker 420 first blocks the distribution line.

Therefore, in the present invention, even when each arc breaker 900, 971, 981 detects an arc of the distribution line, each arc breaker 900, 971, 981 does not immediately block the distribution line, but waits for a signal waiting time. do. If the control signal is received from the fault location determining apparatus 990 within a predetermined signal waiting time, each of the arc breakers 900, 971, and 981 blocks the distribution line of the corresponding section.

If the arc breakers 900, 971 and 981 do not receive the control signal within the signal waiting time and the arc is still detected on the distribution line, the arc breakers 900, 971 and 981 prevent the accident of the distribution line. The power supply to the distribution line can be cut off immediately.

If each arc breaker 900, 971, 981 did not receive a control signal within the signal waiting time, and no arcs were detected on the distribution line, then the other arc breakers 900, 971, 981 depend on the control signal. It means that the power supply to the distribution line is cut off. Thus, in this case, the arc breakers 900, 971 and 981 do not perform a special operation.

According to one embodiment of the present invention, the arc breaker 900 may be integrally formed with the fault location determining apparatus 990. In this case, the arc breaker 900 may determine whether an arc is detected from the lower layer arc breakers 971 and 981 to determine a failure position of the distribution line.

10 is a flowchart illustrating a method for determining a fault location according to an embodiment of the present invention step by step.

A plurality of arc breakers installed on the distribution line detects arcs generated in the distribution line at each point. Each arc breaker can transmit an arc detection to the fault location determination device. The arc breaker may be hierarchically configured according to the shape of the distribution line. The arc breaker may include an upper layer arc breaker that detects an arc between a power supply and a distribution node and a plurality of lower layer arc breakers that detect an arc between the distribution node and a load.

In operation S1010, the failure location determining apparatus receives whether an arc is detected from the plurality of arc breakers, respectively.

In operation S1020, the failure location determining apparatus determines a failure location of the distribution line based on the location in the hierarchy of the arc breaker that receives the detection of the arc.

According to an embodiment, in operation S1010, the fault location determining apparatus may receive whether or not an arc is detected from both an upper layer arc breaker and a plurality of lower layer arc breakers. In this case, in operation S1020, the apparatus for determining a failure location may determine a failure location between a power supply and a power distribution node where an upper layer arc breaker is located.

According to another exemplary embodiment, in operation S1010, the apparatus for determining a failure location may receive whether or not an arc is detected from any one of the lower layer arc breakers among the plurality of lower layer arc breakers, and may receive whether an arc is detected from the upper layer arc breaker. . In this case, in operation S1020, the apparatus for determining a failure location may determine a section in which the lower layer arc breaker, which receives the arc detection, is located as the failure location. That is, the fault location determining apparatus may determine the fault location between the load associated with the lower layer arc breaker that receives the arc detection and the distribution node.

In operation S1030, the failure location determining apparatus generates a control signal to cut off power supply to the failure location.

In operation S1040, the failure location determining apparatus transmits a control signal to the arc breaker associated with the failure location. The fault location determining apparatus may transmit a control signal to an arc breaker capable of minimizing a power interruption range among the arc breakers capable of interrupting the power supply to the fault location.

The arc breaker cuts off the power supply to the location where the fault occurred based on the control signal.

11 is a flowchart illustrating a step-by-step method of shutting off power according to an embodiment of the present invention.

In step S1110, the arc breaker detects an arc generated in the distribution line.

In step S1120, the arc breaker determines whether the generated arc is a parallel arc or a series arc.

If the arc generated in the distribution line is a parallel arc, in step S1170 the arc breaker immediately cuts off the power supply to the distribution line.

If the arc generated in the distribution line is a serial arc, the arc breaker in step S1130 transmits the detection of the arc to the fault location determination device.

In step S1140, the arc breaker calculates a signal waiting time.

In step S1150, the arc breaker receives the control signal from the fault location determination device. If the arc breaker does not receive the control signal within the signal waiting time, the arc breaker cuts off the power supply to the power distribution line in step S1170.

If the arc breaker receives the control signal within the signal waiting time in step S1150, the arc breaker cuts off the power supply of the power distribution line according to the control signal in step S1160.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

The method for determining a fault location and a method for shutting off a power distribution line according to an embodiment of the present invention may be implemented in a program command form that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

1 is a view for explaining the operation of each arc circuit breaker when a failure does not occur in a hierarchically arranged power distribution circuit.

FIG. 2 is a diagram illustrating the operation of each arc breaker when a series arc occurs in an upper layer of a hierarchically configured power distribution circuit.

3 is a diagram illustrating the arc detection possibility and whether or not each arc breaker in the embodiment shown in FIG.

FIG. 4 is a diagram illustrating the operation of each arc breaker when a series arc occurs in a lower layer of a hierarchically configured power distribution circuit.

FIG. 5 is a diagram illustrating arc detection possibilities of each arc circuit breaker and whether or not the blocks are blocked in the embodiment shown in FIG. 4.

Fig. 6 shows the arc breaking action TC-curve of the arc breaker.

FIG. 7 is a diagram illustrating a concept of determining a failure section when an arc is detected by one lower breaker.

8 is a block diagram showing the structure of a fault location determining apparatus according to an embodiment of the present invention.

9 is a block diagram showing the structure of an arc breaker according to an embodiment of the present invention.

10 is a flowchart illustrating a method for determining a fault location according to an embodiment of the present invention step by step.

11 is a flowchart illustrating a step-by-step method of shutting off power according to an embodiment of the present invention.

Claims (18)

In the fault position determination device of the distribution line, Receiving unit for receiving whether each of the arc detection from a plurality of hierarchically configured arc breaker; Failure location determination unit for determining the failure occurrence position of the distribution line based on the position in the hierarchy of the arc breaker receiving the detection of the arc Failure location determination device comprising a. The method of claim 1, And a plurality of upper layer detectors for detecting an arc between a power supply and a distribution node and a plurality of lower layer detectors for detecting an arc between the power distribution node and a load. The method of claim 1, When the receiver receives the arc detection from the upper layer detector and the plurality of lower layer detectors, The fault location determining unit determines the fault location between the power supply and the power distribution node as the fault location. The method of claim 1, When the receiving unit receives the arc detection from any one of the lower layer detectors of the plurality of lower layer detectors, and receives the arc detection from the upper layer detector, The fault location determining unit determines the fault location between the load associated with the lower layer detector receiving the detection of the arc and the power distribution node. The method of claim 1, A controller configured to generate a control signal to cut off power supply to the failure location; And Transmitter for transmitting the control signal to the detector associated with the failure location Failure location determination device further comprising. A detector for detecting an arc generated in a distribution line; An arc type determination unit that determines whether the generated arc is a parallel arc or a serial arc; Blocking unit for cutting off the power supply to the power distribution line according to the arc type Arc breaker comprising a. The method of claim 6, A transmission unit which transmits whether or not the arc is detected to a fault location determining apparatus when the arc is a serial arc; And A receiver configured to receive a control signal generated based on whether the arc is detected from the fault location determining apparatus; More, The breaker is an arc circuit breaker to cut off the power supply in accordance with the control signal. The method of claim 6, The arc detector calculates a signal waiting time based on whether the arc is detected. If the control signal is not received within the signal waiting time, The breaker is an arc breaker to cut off the power supply. The method of claim 6, And the arc breaker is integrated with the fault position determining device. Receiving each of the arc detections from the plurality of hierarchically configured arc breakers; And Determining a failure location of the distribution line based on a position in the hierarchy of the arc breaker that has received the arc detection; Failure location determination method of a distribution line comprising a. The method of claim 10, Wherein the plurality of arc breakers comprise an upper layer detector for detecting an arc between a power supply and a distribution node and a plurality of lower layer detectors for detecting an arc between the distribution node and a load. The method of claim 10, In the receiving step, if it is received whether the arc detection from the upper layer detector and the plurality of lower layer detectors, The determining of a failure location of the power distribution line may include determining a failure location between the power supply and the power distribution node as the failure location. The method of claim 10, When receiving the arc detection from any one of the lower layer detector of the plurality of lower layer detector in the receiving step, and whether or not the arc detection from the upper layer detector, The determining of a failure location of the distribution line may include determining a failure location between a load associated with a lower layer detector receiving the arc detection and the distribution node. The method of claim 10, Generating a control signal to cut off power supply to the failure location; And Transmitting the control signal to a detector associated with the failure location Failure location determination method further comprising. Detecting an arc generated in the distribution line; Determining whether the generated arc is a parallel arc or a serial arc; And Cutting off power supply to the power distribution line according to the arc type; Power off method of a distribution line comprising a. The method of claim 15, If the arc is a serial arc, transmitting whether or not the arc is detected to a fault location determining apparatus; And Receiving a control signal generated based on whether the arc is detected from the fault location determining apparatus; More, The disconnecting step is a power cut-off method of the power distribution line to cut off the power supply in accordance with the control signal. The method of claim 15, Calculating a signal waiting time based on whether the arc is detected; More, If the control signal is not received within the signal waiting time in the receiving step, The blocking step is a power cut method of the power distribution line to cut off the power supply. A computer-readable recording medium having recorded thereon a program for executing the method of any one of claims 10 to 17.

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