KR20180083536A - Appratus and method for determining line fault - Google Patents

Abstract

An embodiment of the present invention discloses an apparatus for determining a line fault, which includes: a first receiving unit for receiving current magnitude information of each of a plurality of points from a plurality of sensors disposed at the plurality of points on a line; and a determination unit for comparing each current magnitude information with a preset current magnitude value to determine a fault point between a first reference point with current magnitude information larger than the predetermined current magnitude value and a second reference point with current magnitude information smaller than the predetermined current magnitude value. Accordingly, the present invention can protect a power facility and quickly cope with an electric accident.

Description

[0001] APPARATUS AND METHOD FOR DETERMINING LINE FAULT [0002]

The embodiment relates to a line fault determination apparatus and a method thereof.

Generally, when a failure occurs in a power distribution system, a fault section of a power distribution line is detected based on a fault current detected by a plurality of power distribution terminal units (FRTU) installed in the power distribution line.

However, there exist a plurality of electric poles between the plurality of power distribution automation terminal devices, and it is difficult to precisely know the failure position between which electric poles occurred.

In the case where a fault occurs in the power distribution line, if the power source is only the power source at the substation, a fault current is supplied from the substation in the direction of the fault point, and a partial area of the power distribution line is paralyzed.

In addition, when a distributed power source is connected to the power distribution system, there is a distributed power source in addition to the substation as the power source in the power distribution system. At this time, a fault current is supplied to both the fault location side in the substation and the fault location side in the distributed power supply, and the entire area of the distribution line is paralyzed.

Therefore, in addition to quickly detecting the occurrence of a fault when a fault occurs in the distribution line, it is considered important to accurately detect the fault location to prevent unnecessary operation and malfunction of the power distribution apparatus.

The embodiment provides a semiconductor device with improved light extraction efficiency.

The embodiment provides a semiconductor device having excellent current dispersion efficiency.

The problems to be solved in the embodiments are not limited to these, and the objects and effects that can be grasped from the solution means and the embodiments of the problems described below are also included.

The apparatus for determining a line fault according to an embodiment of the present invention includes a first receiving unit for receiving current size information of each of a plurality of points from a plurality of sensors disposed at a plurality of points on a line; And comparing each of the current magnitude information with a predetermined current magnitude value to determine a fault point as a first reference point having current magnitude information larger than the preset current magnitude value and current magnitude information smaller than the predetermined current magnitude value And a second reference point having a second reference point.

And a second receiving unit for receiving the current direction information of each of the plurality of points from the plurality of sensors, wherein, when there is no point having current size information smaller than the predetermined current magnitude value, A point can be determined between two adjacent points where the current direction is changed by comparing the respective current direction information.

The first reference point and the second reference point may be adjacent points.

And a communication unit for transmitting the failure point.

A method of determining a line fault according to an embodiment of the present invention includes: receiving current size information of each of a plurality of points from a plurality of sensors disposed at a plurality of points of a line; And comparing each of the current magnitude information with a preset current magnitude value to determine a fault point as a first reference point having current magnitude information larger than the preset current magnitude value and current magnitude information smaller than the predetermined current magnitude value And a second reference point having a second reference point.

Receiving the current direction information of each of the plurality of points from the plurality of sensors in the receiving step,

In the determining, if there is no point having current size information smaller than the predetermined current magnitude value, the fault point may be compared with each of the current direction information to determine between two adjacent points whose current direction changes.

And transmitting the failure point after the determining step.

According to the embodiment, the light extraction efficiency is improved.

Further, the current dispersion efficiency is excellent, and the light output can be improved.

The various and advantageous advantages and effects of the present invention are not limited to the above description, and can be more easily understood in the course of describing a specific embodiment of the present invention.

FIG. 1 is a conceptual diagram showing a power distribution system including a line fault determination device according to an embodiment of the present invention,
FIG. 2 is a block diagram showing a line fault determination apparatus according to an embodiment of the present invention,
3 and 4 are views for explaining the operation of the line fault determination apparatus according to the embodiment of the present invention,
5 is a flowchart of a method of determining a line fault according to an embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

FIG. 1 is a conceptual diagram showing a distribution system including a line failure determination device according to an embodiment of the present invention.

1, a power distribution system is a system for braking a supplied power source and includes a first supply source A-1, distribution automation terminal devices 10-1, 10-2 and 10-3, a plurality of points 20 , And sensors S-1, S-2, S-3, S-4, S-5, and S-6. Further, a plurality of points and sensors may be disposed between the second distribution automation terminal device 10-2 and the third distribution automation terminal device 10-3.

First, the first source A-1 can provide power to the consumer through the line. The first source A-1 may include a substation, a distributed power source, and the like, and may include various energy sources.

A plurality of distribution automation terminal devices 10-1, 10-2, and 10-3 (FRTU, Feeder Remote Terminal Unit) may be disposed on the line. The plurality of distribution automation terminal devices 10-1, 10-2, and 10-3 may be spaced apart from each other by a predetermined distance. The distribution automation terminal devices 10-1, 10-2, and 10-3 can detect the occurrence and location of a fault in the line. Further, a plurality of electric poles may be disposed between the plurality of distribution automation terminal devices 10-1, 10-2, and 10-3. If a fault occurs on the line when the distance between adjacent distribution automation terminal devices is long, it may be difficult to accurately detect the point where the fault occurs.

A plurality of points 20 may be arranged on the line. The point 20 may be arbitrarily determined, but is not so limited, and adjacent points may be spaced apart by a certain distance.

A plurality of points 20 may be disposed between the pole and the pole. The sensors S-1, S-2, S-3, S-4, S-5, and S-6 may be connected to the plurality of points 20, respectively. The sensors S-1, S-2, S-3, S-4, S-5 and S-6 detect the magnitude of current / voltage at each point 20, can do. The sensors S-1, S-2, S-3, S-4, S-5 and S-6 detect the information detected by the adjacent line fault determining apparatuses 100-1, 100-2, As shown in FIG. With this configuration, when a failure occurs between adjacent distribution automation terminal units, the information detected by the sensors (S-1, S-2, S-3, S-4, S-5, and S- It is possible to accurately determine whether a failure has occurred between the points.

The sensors S-1, S-2, S-3, S-4, S-5 and S-6 may be arranged for each point 20. The sensors S-1, S-2, S-3, S-4, S-5 and S-6 are connected to the distribution automation terminals 10-1, 10-2, It is possible to transmit the sensed information to any one of the line fault deciding apparatuses 100-1, 100-2 and 100-3. The line fault diagnosis devices 100-1, 100-2, and 100-3 may be installed in the distribution automation terminal devices 10-1, 10-2, and 10-3, but are not limited to these locations.

FIG. 2 is a block diagram illustrating a line failure determination apparatus according to an embodiment of the present invention. Referring to FIG.

Referring to FIG. 2, the line fault determination apparatus 100 includes a first receiving unit 110, a second receiving unit 120, a determining unit 130, and a communication unit 140.

First, the first receiving unit 110 receives a plurality of signals from a plurality of sensors S-1, S-2, S-3, S-4, S-5, and S- Lt; RTI ID = 0.0 > 20 < / RTI >

The second receiving unit 120 receives the current direction information of each of the plurality of points 20 from the plurality of sensors S-1, S-2, S-3, S-4, can do. For example, the plurality of sensors S-1, S-2, S-3, S-4, S-5 and S-6 can detect the direction of the current using the phase difference between voltage and current , But the method is not limited thereto and various methods can be applied.

The current magnitude information may be analog or digital, but is not limited to this communication scheme.

The determination unit 130 compares the current magnitude information of each point 20 with the predetermined current magnitude value through the first receiving unit 110 to determine a first reference point having current magnitude information larger than the current magnitude value, And a second reference point having current size information smaller than the current magnitude value may be determined as a failure point. Here, the magnitude value of the predetermined current may be a value equal to or more than a certain ratio of the steady state current value. However, the predetermined magnitude of the current value can be variously set according to the type, position, and surrounding conditions of the line.

3 and 4 are views for explaining the operation of the line fault determination apparatus 100 according to the embodiment of the present invention.

Referring to FIG. 3, a plurality of points 20 may exist between the first distribution automation terminal 10-1 and the second distribution automation terminal 10-2. If a fault occurs between the third point 20-3 and the fourth point 20-4, the fault current can flow from the first source A-1 toward the fault point (in the X1 direction). Here, the fault location is defined as the location where the fault occurred.

In addition, a fault current can flow through the first point 20-1, the second point 20-2, and the third point 20-3. Accordingly, the sensors S-1, S-2, and S-3 disposed in the first region can sense the current magnitude information higher than the preset current magnitude value. Here, the first area P1 may include respective points 20-1, 20-2, and 20-3 disposed between the failure points in the first distribution automation terminal device 10-1.

A first supply source A-1 is disposed on one side of the line, and a load unit L for receiving a power source for supplying power is disposed on the other side of the line.

In this case, a fault current may not flow at the plurality of points 20-4, 20-5, and 20-6 disposed between the second distribution automation terminal device 10-2 and the failure point. That is, the sensors S-1, S-2, S-3, S-4, S-5 and S-6 disposed in the second area P2 sense current- can do. Here, the second area P2 may include respective points 20-4, 20-5, and 20-6 disposed between the failure points in the second distribution automation terminal device 10-2.

The judging unit 130 judges whether or not one of the points 20-1, 20-2 and 20-3 of the first area P1 is the first reference point and one point 20-4 of the second area P2 , 20-5, and 20-6 as the second reference points. The determination unit 130 may determine that the first reference point and the second reference point are fault points.

And the first reference point and the second reference point may be adjacent to each other. Accordingly, the determination unit 130 may determine that the third point 20-3 and the fourth point 20-4 are fault points. According to this configuration, the point where the failure occurs can be accurately determined, and quick response can be achieved.

If there is no point having the current size information smaller than the preset current magnitude value, the determination unit 130 may compare the current direction information with each other to determine a point between the adjacent two points whose current direction changes, as a failure point.

Referring to FIG. 4, a plurality of points 20 may be disposed between the first distribution automation terminal 10-1 and the second distribution automation terminal 10-2, as shown in FIG. Sensors S-1, S-2, S-3, S-4, S-5 and S-6 may be connected to the plurality of points 20, respectively. As in FIG. 3, a failure may occur between the third point 20-3 and the fourth point 20-4.

3, a first source A-1 may be disposed on one side of the line, and a second source A-2 may be disposed on the other side of the line for supplying power. A second source A-2, a distributed power source, and the like, but may include various devices for supplying power.

As a result, a fault current can flow in the direction of the fault point (X1 direction) in the first supply source (A-1). That is, a fault current can flow in the X1 direction in the third region P3. The third region P3 may include a first point 20-1, a second point 20-2, and a third point 20-3.

In addition, a fault current can flow in the direction of the fault point side (X2 direction) in the second supply source A-2. A fault current can flow also in the fourth region P4. However, in the fourth region P4, the fault current can flow in the X2 direction opposite to the X1 direction. Here, the fourth region P4 includes a fourth point 20-4, a fifth point 20-5, a sixth point 20-6, between the fault point and the second distribution automation terminal device 10-2, ).

This is because the bi-directional power supply does not cause electrical disconnection on both sides based on the failure point.

With this configuration, it is possible to determine an accurate failure point by using the line fault determination apparatus 100 according to the embodiment. As a result, it is possible to protect the electric power facilities and quickly cope with an electric accident such as a power failure.

The communication unit 140 can transmit information to the outside about the failure point. The communication unit 140 may transmit data to an adjacent distribution automation terminal, but the present invention is not limited thereto.

The communication unit 140 can transmit information on the failure point wirelessly or by wire. For example, the communication unit 140 may be a LAN (Local Area Network), a USB (Universal Serial Bus), an Ethernet, a Power Line Communication (PLC), a wireless LAN, (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Wireless Broadband Internet (WiBro), Long Term Evolution ), High speed downlink packet access (HSDPA), wideband code division multiple access (WCDMA), ultra wideband (UWB), ubiquitous sensors (S-1, (USN), Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Near Field Communication (NFC), and the like can do. However, it is not limited to this kind.

5 is a flowchart of a method of determining a line fault according to an embodiment of the present invention.

As described above, the line fault determination apparatus can receive current magnitude information / current direction information from the sensor (S210). The first receiving unit may receive the magnitude information of the current, and the second receiving unit may receive the direction information of the current.

Next, the determination unit can determine the failure point using the current magnitude information. Comparing the respective current magnitude information received from the sensors disposed at the respective points with a predetermined current magnitude value and comparing the fault point with a first reference point having current magnitude information larger than a predetermined current magnitude value and a predetermined reference magnitude value A second reference point having smaller current magnitude information.

If there is no point having the current size information smaller than the preset current magnitude value, the determination unit may compare the current point information of the fault point and determine between two adjacent points where the current direction changes. Thus, the failure point can be accurately determined (S220)

Next, the information about the failure point can be transmitted to the external manager server through the communication unit (S230).

As used in this embodiment, the term " portion " refers to a hardware component such as software or an FPGA (field-programmable gate array) or ASIC, and 'part' performs certain roles. However, 'part' is not meant to be limited to software or hardware. &Quot; to " may be configured to reside on an addressable storage medium and may be configured to play one or more processors. Thus, by way of example, 'parts' may refer to components such as software components, object-oriented software components, class components and task components, and processes, functions, , Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and components may be further combined with a smaller number of components and components or further components and components. In addition, the components and components may be implemented to play back one or more CPUs in a device or a secure multimedia card.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

A-1, A-2: a first source, a second source
S-1, S-2, S-3, S-4, S-5,
10: Distribution automation terminal
20: Branch office
100: Line fault detecting device

Claims (7)

A first receiving unit for receiving current size information of each of the plurality of points from a plurality of sensors disposed at a plurality of points of the line; And
Comparing each of the current magnitude information with a predetermined current magnitude value to determine whether the malfunction point has a first reference point having current magnitude information larger than the predetermined current magnitude value and current magnitude information smaller than the predetermined current magnitude value And a determination unit for determining between a first reference point and a second reference point.
The method according to claim 1,
And a second receiver for receiving current direction information of each of the plurality of points from the plurality of sensors,
Wherein,
And comparing the fault point with each of the current direction information, if there is no point having current size information smaller than the predetermined current magnitude value, to determine the fault point to be between two adjacent points whose current direction changes.
The method according to claim 1,
Wherein the first reference point and the second reference point are adjacent to each other.
The method according to claim 1,
And a communication unit for transmitting the fault point.
Receiving current size information of each of the plurality of points from a plurality of sensors disposed at a plurality of points of the line; And
Comparing each of the current magnitude information with a predetermined current magnitude value to determine whether the malfunction point has a first reference point having current magnitude information larger than the predetermined current magnitude value and current magnitude information smaller than the predetermined current magnitude value And determining between the first reference point and the second reference point.
6. The method of claim 5,
In the receiving step,
Receiving current direction information of each of the plurality of points from the plurality of sensors,
In the determining,
And comparing the fault point with each of the current direction information, if there is no point having current size information smaller than the predetermined current magnitude value, to determine between the two adjacent points whose current direction changes.
6. The method of claim 5,
After the determining step,
And transmitting the fault point.

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