KR20230047341A - Magnetic measuring device and the method thereof - Google Patents

Magnetic measuring device and the method thereof Download PDF

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KR20230047341A
KR20230047341A KR1020230038662A KR20230038662A KR20230047341A KR 20230047341 A KR20230047341 A KR 20230047341A KR 1020230038662 A KR1020230038662 A KR 1020230038662A KR 20230038662 A KR20230038662 A KR 20230038662A KR 20230047341 A KR20230047341 A KR 20230047341A
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magnetic field
transmission line
damage
power transmission
measuring device
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KR1020230038662A
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Korean (ko)
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KR102621607B1 (en
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정계조
한수지
박상기
송민규
이영민
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한국전력공사
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08Locating faults in cables, transmission lines, or networks
    • G01R31/081Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/085Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00Arrangements or instruments for measuring magnetic variables
    • G01R33/02Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/04Measuring direction or magnitude of magnetic fields or magnetic flux using the flux-gate principle
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G5/00Traffic control systems for aircraft, e.g. air-traffic control [ATC]
    • G08G5/04Anti-collision systems
    • G08G5/045Navigation or guidance aids, e.g. determination of anti-collision manoeuvers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The present invention relates to a magnetic field measurement device, which checks a damage state of a power line by an aviation obstruction indicator, and more specifically, to a magnetic field measurement device, which includes two or more magnetic field sensors spaced a certain distance apart in the longitudinal direction of the power line, and a body into which the magnetic field sensor is inserted and fixed, wherein a body moves along the power line and a damage state of the power line is measured based on irregular changes in the magnetic field measured by the magnetic field sensor.

Description

송전선의 손상상태를 확인하는 자기장 측정장치 및 측정방법{MAGNETIC MEASURING DEVICE AND THE METHOD THEREOF}Magnetic field measuring device and measuring method for checking the damage state of transmission line {MAGNETIC MEASURING DEVICE AND THE METHOD THEREOF}

본 발명은 송전선의 손상상태를 확인하는 자기장 측정장치 및 측정방법에 관한 것으로, 상세하게는 자기장 센서를 이용하여 항공장애표시구에 의한 송전선의 손상상태를 측정하는 자기장 측정장치 및 측정방법이다.The present invention relates to a magnetic field measuring device and measuring method for checking the damage state of a power transmission line, and more particularly, to a magnetic field measuring device and measuring method for measuring the damage state of a power transmission line by an aviation failure indicator using a magnetic field sensor.

송전선에 설치되는 항공장애표시구는 주간에 항공기 운전자에게 송전선로가 있다는 것을 알려주기 위한 것으로써 충돌위험 등 돌발상황을 회피하기 위한 시설물이다. Aviation obstacle display zones installed on transmission lines are to inform aircraft drivers that there is a transmission line during the daytime, and are facilities to avoid unexpected situations such as the risk of collision.

송전선은 알루미늄피복강심알루미늄연선(ACSR/AW)[Concentric-Lay-Stranded Aluminum Conductors Aluminum-Clad Steel Reinforced]으로 항공장애표시구와 접하는 송전선의 양단은 자중에 의한 인장력, 자연현상에 의한 수축팽창, 풍압의 영향에 의한 반복 굽힘현상으로 응력(스트레스)이 집중되어 송전선 내부 보강용 소선강심과 외부 알루미늄연선이 변형 또는 절단되는 결함이 발생한다. The transmission line is an aluminum-clad steel core aluminum stranded wire (ACSR/AW) [Concentric-Lay-Stranded Aluminum Conductors Aluminum-Clad Steel Reinforced]. Stress (stress) is concentrated due to the repeated bending phenomenon caused by the influence, and a defect occurs in which the wire steel core for reinforcement inside the transmission line and the external aluminum strand are deformed or cut.

일반적으로 항공장애표시구가 설치된 송전선의 점검은 송전검사원이 직접 접근하여 손상상태를 육안으로 점검하고 있으나, 항공장애표시구와 접하는 송전선의 양단에서 송전선의 내부 강심 중 일부 소선강심이 늘어나거나 끊어지는 손상, 또는 외부 알루미늄연선이 늘어나거나 끊어지는 현상이 발생할 경우에도 항공장애표시구의 결합부가 손상부위를 덮고 있어 육안으로 손상상태 점검과 검출이 불가능한 실정이다.In general, when inspecting transmission lines with aviation fault indication zones, a power transmission inspector directly approaches and visually inspects the damage condition. , or even when the external aluminum twisted wire is stretched or broken, it is impossible to inspect and detect the damage with the naked eye because the coupling part of the aviation failure indicator covers the damaged area.

본 발명은 상술한 문제점을 해결하기 위해 안출된 것으로, 송전선의 손상부위의 자기장변화를 검출하여 손상상태 및 절단상태를 측정할 수 있는 자기장 측정장치 및 측정방법을 제공하는데 그 목적이 있다. The present invention has been made to solve the above problems, and an object of the present invention is to provide a magnetic field measuring device and measuring method capable of measuring a damaged state and a cut state by detecting a magnetic field change at a damaged portion of a power transmission line.

즉, 송전선 내부에 있는 소선강심은 자성체재질로 제작된 소선으로 응력이 발생할 경우 자기장의 변화가 비가역적으로 발생하는 자기-탄성효과가 존재한다. 특히 송전선의 경우 풍향의 크기와 방향의 변화, 외부온도의 변화 등으로 반복하중과 피로현상의 누적으로 자기탄성효과에 의한 손상발생부위의 자기장 크기가 더욱 증가하고 이러한 자기장의 크기를 비파괴적으로 검출하여 손상부위를 조기에 검출하여 파급손상현상을 예방하는 자기장 측정장치 및 측정방법을 제공하고자 한다. That is, the wire core inside the transmission line is a wire made of a magnetic material, and there is a magneto-elastic effect in which a change in the magnetic field occurs irreversibly when stress occurs. In particular, in the case of power transmission lines, the magnitude of the magnetic field in the area where damage occurs due to the magnetoelastic effect further increases due to the accumulation of repeated loads and fatigue due to changes in the size and direction of wind direction and change in external temperature, etc., and the magnitude of this magnetic field is detected nondestructively. Accordingly, it is intended to provide a magnetic field measuring device and measuring method for preventing ripple damage by early detection of damaged parts.

아울러 종래와 같이 검사자가 육안점검으로 발견할 수 없는 항공장애표시구와 송전선의 인접부에서 내부손상 발생할 경우, 자기장 측정장치로 손상상태의 검출과 위치를 측정하여 송전선의 건전성 검사범위 한계를 해결하기 위한 수단을 제공하는데 그 목적이 있다.In addition, in the case of internal damage occurring in the vicinity of the transmission line and the aviation failure indicator area that cannot be detected by visual inspection, the magnetic field measuring device detects and measures the location of the damage state to solve the limit of the inspection range of the integrity of the transmission line. Its purpose is to provide means.

본 발명은 항공장애표시구에 의한 송전선의 손상상태를 확인하기 위한 자기장 측정장치에 있어서, 송전선의 길이방향으로 일정거리 이격된 두 개 이상의 자기장 센서, 자기장 센서가 삽입 고정되는 바디를 포함하며, 바디를 송전선을 따라 이동하며 자기장 센서로 측정된 자기장의 불규칙 변화로 상기 송전선의 손상상태를 측정하는 것을 특징으로 하는 자기장 측정장치이다.The present invention is a magnetic field measuring device for checking the damage state of a power transmission line by an aviation obstacle indicator, including two or more magnetic field sensors spaced apart at a certain distance in the longitudinal direction of the power transmission line, and a body into which the magnetic field sensor is inserted and fixed, It is a magnetic field measuring device characterized in that it moves along the transmission line and measures the damage state of the transmission line with irregular changes in the magnetic field measured by the magnetic field sensor.

본 발명에 따르면 항공장애표시구와 송전선의 접속부 및 인접부의 응력(스트레스)집중에 의한 인장이나 굽힘, 수축팽창 등 불균일하게 발생되는 자기장의 크기를 정량적으로 측정하여, 열화, 균열, 절손 등을 검출할 수 있는 효과가 있다. According to the present invention, it is possible to detect deterioration, cracks, breaks, etc. by quantitatively measuring the magnitude of non-uniformly generated magnetic fields such as tension, bending, contraction, expansion, etc. There are possible effects.

또한, 본 발명은 자기장(플럭스게이트)센서를 이용하여 항공장애표시구 인접지점까지 송전선 및 항공장애표시구의 결합부를 감싸며 자기장의 크기를 연속적으로 측정할 수 있어, 측정이 어려운 항공장애표시구의 인접부의 송전선도 공구를 제거하지 않고 내부 결함을 신속하고 원활하게 측정할 수 있다.In addition, the present invention can use a magnetic field (fluxgate) sensor to cover the junction of the transmission line and the aviation obstacle indicator zone to the adjacent point of the aviation obstacle indicator zone and continuously measure the size of the magnetic field, Transmission lines can also be quickly and smoothly measured for internal faults without removing tools.

도 1은 본 발명에 따른 자기장 측정장치의 구성 및 측정방법을 보여주는 개략도(부분 확대도)이다.
도 2는 본 발명에 따른 자기장 측정장치의 사시도(a)와 측면도(b)이다.
도 3은 송전선의 손상상태의 사진과 그에 따른 자기장의 변화를 보여주는 그래프이다.
1 is a schematic view (partially enlarged view) showing the configuration and measuring method of a magnetic field measuring device according to the present invention.
2 is a perspective view (a) and a side view (b) of a magnetic field measuring device according to the present invention.
3 is a graph showing a photograph of a damaged state of a transmission line and a change in a magnetic field accordingly.

본 발명을 충분히 이해하기 위해서 본 발명의 바람직한 실시 예를 첨부 도면을 참조하여 설명한다. 본 발명의 실시 예는 여러 가지 형태로 변형될 수 있으며, 본 발명의 범위가 아래에서 상세히 설명하는 실시 예로 한정되는 것으로 해석되어서는 안 된다. 본 실시 예는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되는 것이다. 따라서 도면에서의 요소의 형상 등은 보다 명확한 설명을 강조하기 위해서 과장되어 표현될 수 있다. 각 도면에서 동일한 구성은 동일한 참조부호로 도시한 경우가 있음을 유의하여야 한다. 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 공지 기능 및 구성에 대한 상세한 기술은 생략된다.In order to fully understand the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the examples described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shapes of elements in the drawings may be exaggerated to emphasize a clearer explanation. It should be noted that in each drawing, the same configuration may be indicated by the same reference numerals. Detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention are omitted.

본 발명은 항공장애표시구(500)에 의한 송전선의 손상상태를 확인하기 위한 자기장 측정장치에 있어서, 송전선의 길이방향으로 일정거리 이격된 두 개 이상의 자기장 센서(100), 상기 자기장 센서가 삽입 고정되는 바디(200)를 포함하며 상기 바디를 송전선(600)을 따라 이동하며 상기 자기장 센서로 측정된 자기장의 불규칙 변화로 상기 송전선의 손상상태를 측정하는 것을 특징으로 하는 자기장 측정장치에 관한 것이다.The present invention is a magnetic field measuring device for checking the damage state of a power transmission line by an aviation obstacle indicator 500, wherein two or more magnetic field sensors 100 spaced apart at a certain distance in the longitudinal direction of the power transmission line, the magnetic field sensors are inserted and fixed It relates to a magnetic field measuring device comprising a body 200 that is a power transmission line and moving the body along the transmission line 600 and measuring the damage state of the transmission line with irregular changes in the magnetic field measured by the magnetic field sensor.

도 1은 본 발명에 따른 자기장 측정장치의 구성 및 측정방법을 보여주는 개략도(부분 확대도)이고, 도 2는 상기 자기장 측정장치의 사시도(a)와 측면도(b)이다. 도 1과 도 2를 참고하여 본 발명을 좀 더 상세히 설명하면 다음과 같다. 1 is a schematic (partially enlarged view) showing the configuration and measuring method of a magnetic field measuring device according to the present invention, and FIG. 2 is a perspective view (a) and a side view (b) of the magnetic field measuring device. The present invention will be described in more detail with reference to FIGS. 1 and 2 as follows.

상기 자기장 센서(100)는 플럭스 게이트 센서일 수 있다.The magnetic field sensor 100 may be a flux gate sensor.

상기 바디(200)는 상기 송전선을 감싸도록 내측이 반원기둥 형상으로 형성된 제1바디(210), 상기 항공장애표시구의 결합부(510)를 감싸도록 내측이 반원기둥 형상으로 형성된 제2바디(220)를 포함하며 상기 제1바디의 선단에 상기 제2바디가 위치한다.The body 200 includes a first body 210 whose inner side is formed in a semi-cylindrical shape to surround the power transmission line, and a second body 220 whose inner side is formed in a semi-cylindrical shape to enclose the coupling portion 510 of the aviation obstacle indicator. ), and the second body is located at the tip of the first body.

상기 자기장 측정장치는 상기 바디(200)에 장착되어 상기 바디의 이동을 돕는 손잡이(300), 상기 송전선의 손상위치를 측정하는 인코더(400), 상기 측정장치에 의해 측정된 측정데이터가 전송되는 제어부를 더 포함한다. 상기 인코더와 상기 제어부는 케이블로 연결될 수 있다.The magnetic field measuring device includes a handle 300 mounted on the body 200 to help move the body, an encoder 400 measuring the damaged position of the transmission line, and a control unit transmitting measurement data measured by the measuring device. more includes The encoder and the controller may be connected by a cable.

상기 자기장 센서(100)는 상기 제1바디(210)의 선단에 고정되는 제1센서 유닛(110), 상기 제2바디(220)의 선단에 고정되는 제2센서 유닛(120)을 포함하며 상기 제1센서 유닛과 상기 제2센서 유닛은 상기 송전선(600)의 길이방향으로 등거리 이격되어 위치하며, 상기 제1센서 유닛과 상기 제2센서 유닛은 각각 상기 송전선의 중심축을 향하며 상기 송전선의 둘레방향으로 등거리 이격되어 위치한다.The magnetic field sensor 100 includes a first sensor unit 110 fixed to the front end of the first body 210 and a second sensor unit 120 fixed to the front end of the second body 220. The first sensor unit and the second sensor unit are positioned equidistantly apart from each other in the longitudinal direction of the power transmission line 600, and the first sensor unit and the second sensor unit face the central axis of the power transmission line, respectively, in the circumferential direction of the power transmission line. are located equidistant from each other.

다음은 상기 자기장 측정장치를 이용한 자기장 측정방법으로, 상기 송전선(600)을 따라 항공장애표시구(500) 방향으로 상기 자기장 측정장치를 이동시키는 이동단계(S100), 상기 자기장 측정장치로 상기 송전선의 손상상태를 측정하는 측정단계(S200), 상기 측정단계에서 취득한 측정데이터를 상기 제어부로 송신하는 송신단계(S300)를 포함하며, 상기 측정단계는 자기장 센서(100)로 측정된 자기장의 불규칙 변화로 상기 송전선의 손상상태를 측정하는 것을 특징으로 한다.The following is a magnetic field measuring method using the magnetic field measuring device, a moving step of moving the magnetic field measuring device in the direction of the aviation obstacle indicator 500 along the power line 600 (S100), It includes a measuring step (S200) of measuring the damage state and a transmitting step (S300) of transmitting the measurement data obtained in the measuring step to the control unit, and the measuring step is performed by irregular changes in the magnetic field measured by the magnetic field sensor 100. It is characterized in that the damage state of the transmission line is measured.

상기 측정단계(S200)는 상기 제2센서 유닛(120)으로 상기 송전선(600)의 손상 시작점을 검출하고 상기 제1센서 유닛(110)으로 상기 송전선의 손상 종료점을 검출하는 손상길이 측정단계(S210)와 상기 인코더(400)에 의해 상기 손상 시작점에서 상기 항공장애표시구의 결합부(510)까지의 길이를 측정하여 상기 송전선의 손상위치를 측정하는 손상위치 측정단계(S220)를 포함하며 상기 손상길이 측정단계와 상기 손상위치 측정단계는 동시에 진행된다.The measuring step (S200) is a damage length measuring step (S210) of detecting a damage start point of the transmission line 600 with the second sensor unit 120 and detecting a damage end point of the transmission line with the first sensor unit 110. ) and a damage position measuring step (S220) of measuring the damaged position of the transmission line by measuring the length from the damage start point to the coupling part 510 of the aviation obstacle indicator sphere by the encoder 400, and the damage length The measuring step and the damage position measuring step are performed simultaneously.

상기 제2바디(220)의 길이(D1)은 상기 항공장애표시구의 결합부의 길이(D2)보다 길거나 같다.The length D1 of the second body 220 is greater than or equal to the length D2 of the coupling part of the aviation obstacle display sphere.

도 3은 송전선의 손상상태의 사진과 그에 따른 자기장의 변화을 보여주는 그래프이다. 도 3과 같이 송전선(600)의 소선의 손상상태에 따라 자기장의 크기는 불규칙하게 나타난다. 송전선(600)의 내부 소선의 일부가 절단된 상태일 때(도 3, 좌측)와 상기 소선이 완전히 절단된 상태일 때(도 3, 우측)는 상기 전자파는 불규칙하고 급격하게 변하는 현상을 보인다. 반면 송전선의 정상부위(도 3, 중간)에서는 상기 자기장이 불규칙한 변화 없이 안정적인 것을 확인할 수 있다. 본 발명은 이러한 자기장의 성질을 이용하여 육안으로 확인할 수 없는 송전선의 손상부위를 측정하는 장치 및 그 방법에 관한 것이다.3 is a graph showing a photograph of a damaged state of a power transmission line and a change in a magnetic field accordingly. As shown in FIG. 3, the magnitude of the magnetic field appears irregular according to the damaged state of the wire of the power transmission line 600. When a part of the inner wire of the power transmission line 600 is cut (Fig. 3, left) and when the wire is completely cut (Fig. 3, right), the electromagnetic waves change irregularly and rapidly. On the other hand, it can be confirmed that the magnetic field is stable without irregular changes at the top of the transmission line (Fig. 3, middle). The present invention relates to a device and method for measuring a damaged portion of a power transmission line that cannot be visually confirmed using the properties of such a magnetic field.

또한, 상기 제1센서 유닛(110)과 상기 제2센서 유닛(120)은 측정하고자 하는 상기 송전선(600)의 원주방향으로 배치되어 있기 때문에 상기 송전선(600)의 각각의 소선이 일부 절단되었을 때 절단위치의 센서와 인접위치의 센서에 의해 취득되는 자기장의 변화가 별도로 검출되기 때문에 상기 송전선(600)의 일부 절단 또는 전체 절단을 센서에서 검출되는 신호의 개수로 판정이 가능하며, 이로써 부분손상과 전체손상 여부를 검출할 수 있다.In addition, since the first sensor unit 110 and the second sensor unit 120 are disposed in the circumferential direction of the transmission line 600 to be measured, when each wire of the transmission line 600 is partially cut Since the change in the magnetic field obtained by the sensor at the cut position and the sensor at the adjacent position are separately detected, it is possible to determine partial or total cut of the transmission line 600 by the number of signals detected by the sensor, thereby determining partial damage and It is possible to detect total damage.

이상에서 설명된 본 발명의 실시 예는 예시적인 것에 불과하며, 본 발명이 속한 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시 예가 가능하다는 점을 잘 알 수 있을 것이다. 그러므로 본 발명은 상기의 상세한 설명에서 언급되는 형태로만 한정되는 것은 아님을 잘 이해할 수 있을 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다. 또한, 본 발명은 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 그 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.The embodiments of the present invention described above are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and alternatives within the spirit and scope of the present invention as defined by the appended claims.

100 : 자기장 센서
200 : 바디
300 : 손잡이
400 : 인코더
500 : 항공장애표시구
600 : 송전선
110 : 제1센서 유닛
120 : 제2센서 유닛
210 : 제1바디
220 : 제2바디
510 : 항공장애표시구 결합부
D1 : 제2바디 길이
D2 : 항공장애표시구 결합부 길이
100: magnetic field sensor
200: body
300: handle
400: encoder
500: Aviation failure indicator
600: transmission line
110: first sensor unit
120: second sensor unit
210: first body
220: second body
510: Aviation failure indicator coupling part
D1: Second body length
D2: Aviation obstacle indicator joint length

Claims (1)

항공장애표시구가 설치된 송전선의 손상상태를 확인하기 위한 자기장 측정장치에 있어서,
상기 송전선의 길이방향으로 일정거리 이격된 두 개 이상의 자기장 센서;
상기 자기장 센서가 삽입 고정되는 바디; 를 포함하고,
상기 바디는, 상기 송전선을 감싸도록 내측이 반원기둥 형상인 제1바디;
항공장애표시구의 결합부를 감싸도록 내측이 반원기둥 형상인 제2바디;
상기 송전선의 손상위치를 측정하는 인코더; 및
상기 자기장 측정장치에 의해 측정된 측정데이터가 전송되는 제어부;를 포함하며,
상기 자기장 센서는, 상기 제1바디의 선단에 고정되어 상기 송전선의 손상 종료점을 검출하는 제1센서 유닛;과
상기 제2바디의 선단에 고정되어 상기 송전선의 손상 시작점을 검출하는 제2센서 유닛; 을 포함하며,
상기 제1센서 유닛과 상기 제2센서 유닛은 상기 송전선의 길이방향으로 이격되어 위치하여, 상기 손상 시작점 및 손상 종료점으로부터 손상 길이를 측정하도록 되고, 또한 상기 손상 시작점에서 상기 항공장애표시구의 결합부까지의 길이를 측정하여 상기 송전선의 손상위치를 측정하도록 되며,
상기 제2센서 유닛은 상기 송전선의 중심축을 향하며 상기 송전선의 둘레방향으로 등거리 이격되어 위치하며,
상기 바디가 송전선을 따라 이동하며 상기 자기장 센서로 측정된 자기장의 불규칙 변화로 상기 송전선의 손상길이 및 손상 위치를 측정하는 것을 특징으로 하는 자기장 측정장치.
In the magnetic field measuring device for checking the damage state of the power transmission line in which the aviation obstacle indicator is installed,
two or more magnetic field sensors spaced apart by a predetermined distance in the longitudinal direction of the transmission line;
a body into which the magnetic field sensor is inserted and fixed; including,
The body may include a first body having a semi-cylindrical inner side so as to surround the transmission line;
A second body having a semi-cylindrical shape on the inside so as to surround the connecting portion of the aviation obstacle display sphere;
an encoder for measuring the damage location of the transmission line; and
Including; a control unit to which measurement data measured by the magnetic field measuring device is transmitted,
The magnetic field sensor may include a first sensor unit fixed to the front end of the first body and detecting an end point of damage to the power transmission line; and
a second sensor unit fixed to the front end of the second body and detecting a starting point of damage to the power transmission line; Including,
The first sensor unit and the second sensor unit are located apart from each other in the longitudinal direction of the power transmission line to measure the damage length from the damage start point and the damage end point, and also from the damage start point to the coupling part of the aviation obstacle display sphere. The length of is measured to measure the damage location of the transmission line,
The second sensor unit is located equidistantly spaced apart from each other in the circumferential direction of the transmission line toward the central axis of the transmission line,
The magnetic field measuring device characterized in that the body moves along the power transmission line and measures the damaged length and damaged position of the power transmission line with irregular changes in the magnetic field measured by the magnetic field sensor.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030073774A (en) * 2002-03-13 2003-09-19 박봉수 Tension and paving length measuring device for cable
JP2004184303A (en) * 2002-12-05 2004-07-02 Seiko Instruments Inc Method and apparatus for inspecting electric wire provided with function of removing disturbance
KR20160141130A (en) * 2015-05-28 2016-12-08 성균관대학교산학협력단 Cable inspection apparatus and multi-channel cable inspection apparatus

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KR101598823B1 (en) 2015-04-14 2016-03-02 주식회사 이제이텍 Safety Test Method For Suspension Bridge Cable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030073774A (en) * 2002-03-13 2003-09-19 박봉수 Tension and paving length measuring device for cable
JP2004184303A (en) * 2002-12-05 2004-07-02 Seiko Instruments Inc Method and apparatus for inspecting electric wire provided with function of removing disturbance
KR20160141130A (en) * 2015-05-28 2016-12-08 성균관대학교산학협력단 Cable inspection apparatus and multi-channel cable inspection apparatus

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